Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (260 commits)
  usb: renesas_usbhs: fixup inconsistent return from usbhs_pkt_push()
  usb/isp1760: Allow to optionally trigger low-level chip reset via GPIOLIB.
  USB: gadget: midi: memory leak in f_midi_bind_config()
  USB: gadget: midi: fix range check in f_midi_out_open()
  QE/FHCI: fixed the CONTROL bug
  usb: renesas_usbhs: tidyup for smatch warnings
  USB: Fix USB Kconfig dependency problem on 85xx/QoirQ platforms
  EHCI: workaround for MosChip controller bug
  usb: gadget: file_storage: fix race on unloading
  USB: ftdi_sio.c: Use ftdi async_icount structure for TIOCMIWAIT, as in other drivers
  USB: ftdi_sio.c:Fill MSR fields of the ftdi async_icount structure
  USB: ftdi_sio.c: Fill LSR fields of the ftdi async_icount structure
  USB: ftdi_sio.c:Fill TX field of the ftdi async_icount structure
  USB: ftdi_sio.c: Fill the RX field of the ftdi async_icount structure
  USB: ftdi_sio.c: Basic icount infrastructure for ftdi_sio
  usb/isp1760: Let OF bindings depend on general CONFIG_OF instead of PPC_OF .
  USB: ftdi_sio: Support TI/Luminary Micro Stellaris BD-ICDI Board
  USB: Fix runtime wakeup on OHCI
  xHCI/USB: Make xHCI driver have a BOS descriptor.
  usb: gadget: add new usb gadget for ACM and mass storage
  ...

228 files changed, 14696 insertions, 4156 deletions

diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 48f1781352f1..4ac2750491de 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -12,6 +12,11 @@ menuconfig USB_SUPPORT
 
 if USB_SUPPORT
 
+config USB_COMMON
+        tristate
+        default y
+        depends on USB || USB_GADGET
+
 # Host-side USB depends on having a host controller
 # NOTE:  dummy_hcd is always an option, but it's ignored here ...
 # NOTE:  SL-811 option should be board-specific ...
@@ -19,6 +24,7 @@ config USB_ARCH_HAS_HCD
         boolean
         default y if USB_ARCH_HAS_OHCI
         default y if USB_ARCH_HAS_EHCI
+        default y if USB_ARCH_HAS_XHCI
         default y if PCMCIA && !M32R                    # sl811_cs
         default y if ARM                                # SL-811
         default y if BLACKFIN                           # SL-811
@@ -54,7 +60,7 @@ config USB_ARCH_HAS_OHCI
 # some non-PCI hcds implement EHCI
 config USB_ARCH_HAS_EHCI
         boolean
-        default y if PPC_83xx
+        default y if FSL_SOC
         default y if PPC_MPC512x
         default y if SOC_AU1200
         default y if ARCH_IXP4XX
@@ -69,6 +75,12 @@ config USB_ARCH_HAS_EHCI
         default y if ARCH_MSM
         default y if MICROBLAZE
         default y if SPARC_LEON
+        default y if ARCH_MMP
+        default PCI
+
+# some non-PCI HCDs implement xHCI
+config USB_ARCH_HAS_XHCI
+        boolean
         default PCI
 
 # ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface.
@@ -110,6 +122,8 @@ config USB
 
 source "drivers/usb/core/Kconfig"
 
+source "drivers/usb/dwc3/Kconfig"
+
 source "drivers/usb/mon/Kconfig"
 
 source "drivers/usb/wusbcore/Kconfig"
diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index 30ddf8dc4f72..75eca7645227 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -6,6 +6,8 @@
 
 obj-$(CONFIG_USB)               += core/
 
+obj-$(CONFIG_USB_DWC3)          += dwc3/
+
 obj-$(CONFIG_USB_MON)           += mon/
 
 obj-$(CONFIG_PCI)               += host/
@@ -51,3 +53,5 @@ obj-$(CONFIG_USB_MUSB_HDRC)	+= musb/
 obj-$(CONFIG_USB_RENESAS_USBHS) += renesas_usbhs/
 obj-$(CONFIG_USB_OTG_UTILS)     += otg/
 obj-$(CONFIG_USB_GADGET)        += gadget/
+
+obj-$(CONFIG_USB_COMMON)        += usb-common.o
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index dac7676ce21b..3ec6699ab725 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1058,11 +1058,11 @@ made_compressed_probe:
                 goto alloc_fail;
         }
 
-        ctrlsize = le16_to_cpu(epctrl->wMaxPacketSize);
-        readsize = le16_to_cpu(epread->wMaxPacketSize) *
+        ctrlsize = usb_endpoint_maxp(epctrl);
+        readsize = usb_endpoint_maxp(epread) *
                                 (quirks == SINGLE_RX_URB ? 1 : 2);
         acm->combined_interfaces = combined_interfaces;
-        acm->writesize = le16_to_cpu(epwrite->wMaxPacketSize) * 20;
+        acm->writesize = usb_endpoint_maxp(epwrite) * 20;
         acm->control = control_interface;
         acm->data = data_interface;
         acm->minor = minor;
@@ -1534,6 +1534,9 @@ static const struct usb_device_id acm_ids[] = {
         { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */
         { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */
 
+        /* Support for Owen devices */
+        { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */
+
         /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
 
         /* Support Lego NXT using pbLua firmware */
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 2b9ff518b509..1d26a7135dd9 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -682,7 +682,7 @@ next_desc:
         if (!ep || !usb_endpoint_is_int_in(ep))
                 goto err;
 
-        desc->wMaxPacketSize = le16_to_cpu(ep->wMaxPacketSize);
+        desc->wMaxPacketSize = usb_endpoint_maxp(ep);
         desc->bMaxPacketSize0 = udev->descriptor.bMaxPacketSize0;
 
         desc->orq = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 3f94ac34dce3..12cf5e7395a8 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -186,8 +186,7 @@ static int usbtmc_ioctl_abort_bulk_in(struct usbtmc_device_data *data)
         for (n = 0; n < current_setting->desc.bNumEndpoints; n++)
                 if (current_setting->endpoint[n].desc.bEndpointAddress ==
                         data->bulk_in)
-                        max_size = le16_to_cpu(current_setting->endpoint[n].
-                                                desc.wMaxPacketSize);
+                        max_size = usb_endpoint_maxp(&current_setting->endpoint[n].desc);
 
         if (max_size == 0) {
                 dev_err(dev, "Couldn't get wMaxPacketSize\n");
@@ -636,7 +635,7 @@ static int usbtmc_ioctl_clear(struct usbtmc_device_data *data)
         for (n = 0; n < current_setting->desc.bNumEndpoints; n++) {
                 desc = &current_setting->endpoint[n].desc;
                 if (desc->bEndpointAddress == data->bulk_in)
-                        max_size = le16_to_cpu(desc->wMaxPacketSize);
+                        max_size = usb_endpoint_maxp(desc);
         }
 
         if (max_size == 0) {
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 26678cadfb21..f4bdd0ce8d56 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -124,9 +124,9 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
 
         if (usb_endpoint_xfer_isoc(&ep->desc))
                 max_tx = (desc->bMaxBurst + 1) * (desc->bmAttributes + 1) *
-                        le16_to_cpu(ep->desc.wMaxPacketSize);
+                        usb_endpoint_maxp(&ep->desc);
         else if (usb_endpoint_xfer_int(&ep->desc))
-                max_tx = le16_to_cpu(ep->desc.wMaxPacketSize) *
+                max_tx = usb_endpoint_maxp(&ep->desc) *
                         (desc->bMaxBurst + 1);
         else
                 max_tx = 999999;
@@ -241,7 +241,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
                     cfgno, inum, asnum, d->bEndpointAddress);
                 endpoint->desc.bmAttributes = USB_ENDPOINT_XFER_INT;
                 endpoint->desc.bInterval = 1;
-                if (le16_to_cpu(endpoint->desc.wMaxPacketSize) > 8)
+                if (usb_endpoint_maxp(&endpoint->desc) > 8)
                         endpoint->desc.wMaxPacketSize = cpu_to_le16(8);
         }
 
@@ -254,7 +254,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
                         && usb_endpoint_xfer_bulk(d)) {
                 unsigned maxp;
 
-                maxp = le16_to_cpu(endpoint->desc.wMaxPacketSize) & 0x07ff;
+                maxp = usb_endpoint_maxp(&endpoint->desc) & 0x07ff;
                 if (maxp != 512)
                         dev_warn(ddev, "config %d interface %d altsetting %d "
                                 "bulk endpoint 0x%X has invalid maxpacket %d\n",
@@ -755,3 +755,106 @@ err2:
                 dev_err(ddev, "out of memory\n");
         return result;
 }
+
+void usb_release_bos_descriptor(struct usb_device *dev)
+{
+        if (dev->bos) {
+                kfree(dev->bos->desc);
+                kfree(dev->bos);
+                dev->bos = NULL;
+        }
+}
+
+/* Get BOS descriptor set */
+int usb_get_bos_descriptor(struct usb_device *dev)
+{
+        struct device *ddev = &dev->dev;
+        struct usb_bos_descriptor *bos;
+        struct usb_dev_cap_header *cap;
+        unsigned char *buffer;
+        int length, total_len, num, i;
+        int ret;
+
+        bos = kzalloc(sizeof(struct usb_bos_descriptor), GFP_KERNEL);
+        if (!bos)
+                return -ENOMEM;
+
+        /* Get BOS descriptor */
+        ret = usb_get_descriptor(dev, USB_DT_BOS, 0, bos, USB_DT_BOS_SIZE);
+        if (ret < USB_DT_BOS_SIZE) {
+                dev_err(ddev, "unable to get BOS descriptor\n");
+                if (ret >= 0)
+                        ret = -ENOMSG;
+                kfree(bos);
+                return ret;
+        }
+
+        length = bos->bLength;
+        total_len = le16_to_cpu(bos->wTotalLength);
+        num = bos->bNumDeviceCaps;
+        kfree(bos);
+        if (total_len < length)
+                return -EINVAL;
+
+        dev->bos = kzalloc(sizeof(struct usb_host_bos), GFP_KERNEL);
+        if (!dev->bos)
+                return -ENOMEM;
+
+        /* Now let's get the whole BOS descriptor set */
+        buffer = kzalloc(total_len, GFP_KERNEL);
+        if (!buffer) {
+                ret = -ENOMEM;
+                goto err;
+        }
+        dev->bos->desc = (struct usb_bos_descriptor *)buffer;
+
+        ret = usb_get_descriptor(dev, USB_DT_BOS, 0, buffer, total_len);
+        if (ret < total_len) {
+                dev_err(ddev, "unable to get BOS descriptor set\n");
+                if (ret >= 0)
+                        ret = -ENOMSG;
+                goto err;
+        }
+        total_len -= length;
+
+        for (i = 0; i < num; i++) {
+                buffer += length;
+                cap = (struct usb_dev_cap_header *)buffer;
+                length = cap->bLength;
+
+                if (total_len < length)
+                        break;
+                total_len -= length;
+
+                if (cap->bDescriptorType != USB_DT_DEVICE_CAPABILITY) {
+                        dev_warn(ddev, "descriptor type invalid, skip\n");
+                        continue;
+                }
+
+                switch (cap->bDevCapabilityType) {
+                case USB_CAP_TYPE_WIRELESS_USB:
+                        /* Wireless USB cap descriptor is handled by wusb */
+                        break;
+                case USB_CAP_TYPE_EXT:
+                        dev->bos->ext_cap =
+                                (struct usb_ext_cap_descriptor *)buffer;
+                        break;
+                case USB_SS_CAP_TYPE:
+                        dev->bos->ss_cap =
+                                (struct usb_ss_cap_descriptor *)buffer;
+                        break;
+                case CONTAINER_ID_TYPE:
+                        dev->bos->ss_id =
+                                (struct usb_ss_container_id_descriptor *)buffer;
+                        break;
+                default:
+                        break;
+                }
+        }
+
+        return 0;
+
+err:
+        usb_release_bos_descriptor(dev);
+        return ret;
+}
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index 0149c0976e9c..d95696584762 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -190,7 +190,7 @@ static char *usb_dump_endpoint_descriptor(int speed, char *start, char *end,
         dir = usb_endpoint_dir_in(desc) ? 'I' : 'O';
 
         if (speed == USB_SPEED_HIGH) {
-                switch (le16_to_cpu(desc->wMaxPacketSize) & (0x03 << 11)) {
+                switch (usb_endpoint_maxp(desc) & (0x03 << 11)) {
                 case 1 << 11:
                         bandwidth = 2; break;
                 case 2 << 11:
@@ -240,7 +240,7 @@ static char *usb_dump_endpoint_descriptor(int speed, char *start, char *end,
 
         start += sprintf(start, format_endpt, desc->bEndpointAddress, dir,
                          desc->bmAttributes, type,
-                         (le16_to_cpu(desc->wMaxPacketSize) & 0x07ff) *
+                         (usb_endpoint_maxp(desc) & 0x07ff) *
                          bandwidth,
                          interval, unit);
         return start;
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 37518dfdeb98..e3beaf229ee3 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -46,6 +46,7 @@
 #include <linux/cdev.h>
 #include <linux/notifier.h>
 #include <linux/security.h>
+#include <linux/user_namespace.h>
 #include <asm/uaccess.h>
 #include <asm/byteorder.h>
 #include <linux/moduleparam.h>
@@ -68,7 +69,7 @@ struct dev_state {
         wait_queue_head_t wait;     /* wake up if a request completed */
         unsigned int discsignr;
         struct pid *disc_pid;
-        uid_t disc_uid, disc_euid;
+        const struct cred *cred;
         void __user *disccontext;
         unsigned long ifclaimed;
         u32 secid;
@@ -79,7 +80,7 @@ struct async {
         struct list_head asynclist;
         struct dev_state *ps;
         struct pid *pid;
-        uid_t uid, euid;
+        const struct cred *cred;
         unsigned int signr;
         unsigned int ifnum;
         void __user *userbuffer;
@@ -248,6 +249,7 @@ static struct async *alloc_async(unsigned int numisoframes)
 static void free_async(struct async *as)
 {
         put_pid(as->pid);
+        put_cred(as->cred);
         kfree(as->urb->transfer_buffer);
         kfree(as->urb->setup_packet);
         usb_free_urb(as->urb);
@@ -393,9 +395,8 @@ static void async_completed(struct urb *urb)
         struct dev_state *ps = as->ps;
         struct siginfo sinfo;
         struct pid *pid = NULL;
-        uid_t uid = 0;
-        uid_t euid = 0;
         u32 secid = 0;
+        const struct cred *cred = NULL;
         int signr;
 
         spin_lock(&ps->lock);
@@ -407,9 +408,8 @@ static void async_completed(struct urb *urb)
                 sinfo.si_errno = as->status;
                 sinfo.si_code = SI_ASYNCIO;
                 sinfo.si_addr = as->userurb;
-                pid = as->pid;
-                uid = as->uid;
-                euid = as->euid;
+                pid = get_pid(as->pid);
+                cred = get_cred(as->cred);
                 secid = as->secid;
         }
         snoop(&urb->dev->dev, "urb complete\n");
@@ -422,9 +422,11 @@ static void async_completed(struct urb *urb)
                 cancel_bulk_urbs(ps, as->bulk_addr);
         spin_unlock(&ps->lock);
 
-        if (signr)
-                kill_pid_info_as_uid(sinfo.si_signo, &sinfo, pid, uid,
-                                      euid, secid);
+        if (signr) {
+                kill_pid_info_as_cred(sinfo.si_signo, &sinfo, pid, cred, secid);
+                put_pid(pid);
+                put_cred(cred);
+        }
 
         wake_up(&ps->wait);
 }
@@ -607,9 +609,10 @@ static int findintfep(struct usb_device *dev, unsigned int ep)
 }
 
 static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype,
-                           unsigned int index)
+                           unsigned int request, unsigned int index)
 {
         int ret = 0;
+        struct usb_host_interface *alt_setting;
 
         if (ps->dev->state != USB_STATE_UNAUTHENTICATED
          && ps->dev->state != USB_STATE_ADDRESS
@@ -618,6 +621,19 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype,
         if (USB_TYPE_VENDOR == (USB_TYPE_MASK & requesttype))
                 return 0;
 
+        /*
+         * check for the special corner case 'get_device_id' in the printer
+         * class specification, where wIndex is (interface << 8 | altsetting)
+         * instead of just interface
+         */
+        if (requesttype == 0xa1 && request == 0) {
+                alt_setting = usb_find_alt_setting(ps->dev->actconfig,
+                                                   index >> 8, index & 0xff);
+                if (alt_setting
+                 && alt_setting->desc.bInterfaceClass == USB_CLASS_PRINTER)
+                        index >>= 8;
+        }
+
         index &= 0xff;
         switch (requesttype & USB_RECIP_MASK) {
         case USB_RECIP_ENDPOINT:
@@ -656,7 +672,6 @@ static int usbdev_open(struct inode *inode, struct file *file)
 {
         struct usb_device *dev = NULL;
         struct dev_state *ps;
-        const struct cred *cred = current_cred();
         int ret;
 
         ret = -ENOMEM;
@@ -706,8 +721,7 @@ static int usbdev_open(struct inode *inode, struct file *file)
         init_waitqueue_head(&ps->wait);
         ps->discsignr = 0;
         ps->disc_pid = get_pid(task_pid(current));
-        ps->disc_uid = cred->uid;
-        ps->disc_euid = cred->euid;
+        ps->cred = get_current_cred();
         ps->disccontext = NULL;
         ps->ifclaimed = 0;
         security_task_getsecid(current, &ps->secid);
@@ -749,6 +763,7 @@ static int usbdev_release(struct inode *inode, struct file *file)
         usb_unlock_device(dev);
         usb_put_dev(dev);
         put_pid(ps->disc_pid);
+        put_cred(ps->cred);
 
         as = async_getcompleted(ps);
         while (as) {
@@ -770,7 +785,8 @@ static int proc_control(struct dev_state *ps, void __user *arg)
 
         if (copy_from_user(&ctrl, arg, sizeof(ctrl)))
                 return -EFAULT;
-        ret = check_ctrlrecip(ps, ctrl.bRequestType, ctrl.wIndex);
+        ret = check_ctrlrecip(ps, ctrl.bRequestType, ctrl.bRequest,
+                              ctrl.wIndex);
         if (ret)
                 return ret;
         wLength = ctrl.wLength;         /* To suppress 64k PAGE_SIZE warning */
@@ -1048,7 +1064,6 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
         struct usb_host_endpoint *ep;
         struct async *as;
         struct usb_ctrlrequest *dr = NULL;
-        const struct cred *cred = current_cred();
         unsigned int u, totlen, isofrmlen;
         int ret, ifnum = -1;
         int is_in;
@@ -1100,7 +1115,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
                         kfree(dr);
                         return -EINVAL;
                 }
-                ret = check_ctrlrecip(ps, dr->bRequestType,
+                ret = check_ctrlrecip(ps, dr->bRequestType, dr->bRequest,
                                       le16_to_cpup(&dr->wIndex));
                 if (ret) {
                         kfree(dr);
@@ -1262,8 +1277,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
         as->signr = uurb->signr;
         as->ifnum = ifnum;
         as->pid = get_pid(task_pid(current));
-        as->uid = cred->uid;
-        as->euid = cred->euid;
+        as->cred = get_current_cred();
         security_task_getsecid(current, &as->secid);
         if (!is_in && uurb->buffer_length > 0) {
                 if (copy_from_user(as->urb->transfer_buffer, uurb->buffer,
@@ -1981,9 +1995,8 @@ static void usbdev_remove(struct usb_device *udev)
                         sinfo.si_errno = EPIPE;
                         sinfo.si_code = SI_ASYNCIO;
                         sinfo.si_addr = ps->disccontext;
-                        kill_pid_info_as_uid(ps->discsignr, &sinfo,
-                                        ps->disc_pid, ps->disc_uid,
-                                        ps->disc_euid, ps->secid);
+                        kill_pid_info_as_cred(ps->discsignr, &sinfo,
+                                        ps->disc_pid, ps->cred, ps->secid);
                 }
         }
 }
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 34e3da5aa72a..adf5ca8a2396 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -1583,7 +1583,7 @@ int usb_autopm_get_interface_async(struct usb_interface *intf)
         dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
                         __func__, atomic_read(&intf->dev.power.usage_count),
                         status);
-        if (status > 0)
+        if (status > 0 || status == -EINPROGRESS)
                 status = 0;
         return status;
 }
@@ -1700,6 +1700,20 @@ int usb_runtime_idle(struct device *dev)
         return 0;
 }
 
+int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
+{
+        struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+        int ret = -EPERM;
+
+        if (hcd->driver->set_usb2_hw_lpm) {
+                ret = hcd->driver->set_usb2_hw_lpm(hcd, udev, enable);
+                if (!ret)
+                        udev->usb2_hw_lpm_enabled = enable;
+        }
+
+        return ret;
+}
+
 #endif /* CONFIG_USB_SUSPEND */
 
 struct bus_type usb_bus_type = {
diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c
index df502a98d0df..db7fe50c23d4 100644
--- a/drivers/usb/core/endpoint.c
+++ b/drivers/usb/core/endpoint.c
@@ -56,7 +56,7 @@ static ssize_t show_ep_wMaxPacketSize(struct device *dev,
 {
         struct ep_device *ep = to_ep_device(dev);
         return sprintf(buf, "%04x\n",
-                        le16_to_cpu(ep->desc->wMaxPacketSize) & 0x07ff);
+                        usb_endpoint_maxp(ep->desc) & 0x07ff);
 }
 static DEVICE_ATTR(wMaxPacketSize, S_IRUGO, show_ep_wMaxPacketSize, NULL);
 
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index ce22f4a84ed0..a004db35f6d0 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -242,7 +242,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 
         pci_set_master(dev);
 
-        retval = usb_add_hcd(hcd, dev->irq, IRQF_DISABLED | IRQF_SHARED);
+        retval = usb_add_hcd(hcd, dev->irq, IRQF_SHARED);
         if (retval != 0)
                 goto unmap_registers;
         set_hs_companion(dev, hcd);
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 73cbbd85219f..b3b7d062906d 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -442,7 +442,11 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
         struct usb_ctrlrequest *cmd;
         u16             typeReq, wValue, wIndex, wLength;
         u8              *ubuf = urb->transfer_buffer;
-        u8              tbuf [sizeof (struct usb_hub_descriptor)]
+        /*
+         * tbuf should be as big as the BOS descriptor and
+         * the USB hub descriptor.
+         */
+        u8              tbuf[USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE]
                 __attribute__((aligned(4)));
         const u8        *bufp = tbuf;
         unsigned        len = 0;
@@ -562,6 +566,8 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
                         else /* unsupported IDs --> "protocol stall" */
                                 goto error;
                         break;
+                case USB_DT_BOS << 8:
+                        goto nongeneric;
                 default:
                         goto error;
                 }
@@ -596,6 +602,7 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
         /* CLASS REQUESTS (and errors) */
 
         default:
+nongeneric:
                 /* non-generic request */
                 switch (typeReq) {
                 case GetHubStatus:
@@ -605,6 +612,9 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
                 case GetHubDescriptor:
                         len = sizeof (struct usb_hub_descriptor);
                         break;
+                case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
+                        /* len is returned by hub_control */
+                        break;
                 }
                 status = hcd->driver->hub_control (hcd,
                         typeReq, wValue, wIndex,
@@ -615,7 +625,7 @@ error:
                 status = -EPIPE;
         }
 
-        if (status) {
+        if (status < 0) {
                 len = 0;
                 if (status != -EPIPE) {
                         dev_dbg (hcd->self.controller,
@@ -624,6 +634,10 @@ error:
                                 typeReq, wValue, wIndex,
                                 wLength, status);
                 }
+        } else if (status > 0) {
+                /* hub_control may return the length of data copied. */
+                len = status;
+                status = 0;
         }
         if (len) {
                 if (urb->transfer_buffer_length < len)
@@ -2429,7 +2443,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
          * but drivers can override it in reset() if needed, along with
          * recording the overall controller's system wakeup capability.
          */
-        device_init_wakeup(&rhdev->dev, 1);
+        device_set_wakeup_capable(&rhdev->dev, 1);
 
         /* HCD_FLAG_RH_RUNNING doesn't matter until the root hub is
          * registered.  But since the controller can die at any time,
@@ -2478,6 +2492,13 @@ int usb_add_hcd(struct usb_hcd *hcd,
         }
         if (hcd->uses_new_polling && HCD_POLL_RH(hcd))
                 usb_hcd_poll_rh_status(hcd);
+
+        /*
+         * Host controllers don't generate their own wakeup requests;
+         * they only forward requests from the root hub.  Therefore
+         * controllers should always be enabled for remote wakeup.
+         */
+        device_wakeup_enable(hcd->self.controller);
         return retval;
 
 error_create_attr_group:
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index a428aa080a36..d6cc83249341 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1636,11 +1636,6 @@ void usb_disconnect(struct usb_device **pdev)
         int                     i;
         struct usb_hcd          *hcd = bus_to_hcd(udev->bus);
 
-        if (!udev) {
-                pr_debug ("%s nodev\n", __func__);
-                return;
-        }
-
         /* mark the device as inactive, so any further urb submissions for
          * this device (and any of its children) will fail immediately.
          * this quiesces everything except pending urbs.
@@ -2030,11 +2025,23 @@ static unsigned hub_is_wusb(struct usb_hub *hub)
 
 #define HUB_ROOT_RESET_TIME     50      /* times are in msec */
 #define HUB_SHORT_RESET_TIME    10
+#define HUB_BH_RESET_TIME       50
 #define HUB_LONG_RESET_TIME     200
 #define HUB_RESET_TIMEOUT       500
 
+static int hub_port_reset(struct usb_hub *hub, int port1,
+                        struct usb_device *udev, unsigned int delay, bool warm);
+
+/* Is a USB 3.0 port in the Inactive state? */
+static bool hub_port_inactive(struct usb_hub *hub, u16 portstatus)
+{
+        return hub_is_superspeed(hub->hdev) &&
+                (portstatus & USB_PORT_STAT_LINK_STATE) ==
+                USB_SS_PORT_LS_SS_INACTIVE;
+}
+
 static int hub_port_wait_reset(struct usb_hub *hub, int port1,
-                                struct usb_device *udev, unsigned int delay)
+                        struct usb_device *udev, unsigned int delay, bool warm)
 {
         int delay_time, ret;
         u16 portstatus;
@@ -2051,28 +2058,71 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
                 if (ret < 0)
                         return ret;
 
-                /* Device went away? */
-                if (!(portstatus & USB_PORT_STAT_CONNECTION))
-                        return -ENOTCONN;
-
-                /* bomb out completely if the connection bounced */
-                if ((portchange & USB_PORT_STAT_C_CONNECTION))
-                        return -ENOTCONN;
-
-                /* if we`ve finished resetting, then break out of the loop */
-                if (!(portstatus & USB_PORT_STAT_RESET) &&
-                    (portstatus & USB_PORT_STAT_ENABLE)) {
-                        if (hub_is_wusb(hub))
-                                udev->speed = USB_SPEED_WIRELESS;
-                        else if (hub_is_superspeed(hub->hdev))
-                                udev->speed = USB_SPEED_SUPER;
-                        else if (portstatus & USB_PORT_STAT_HIGH_SPEED)
-                                udev->speed = USB_SPEED_HIGH;
-                        else if (portstatus & USB_PORT_STAT_LOW_SPEED)
-                                udev->speed = USB_SPEED_LOW;
-                        else
-                                udev->speed = USB_SPEED_FULL;
-                        return 0;
+                /*
+                 * Some buggy devices require a warm reset to be issued even
+                 * when the port appears not to be connected.
+                 */
+                if (!warm) {
+                        /*
+                         * Some buggy devices can cause an NEC host controller
+                         * to transition to the "Error" state after a hot port
+                         * reset.  This will show up as the port state in
+                         * "Inactive", and the port may also report a
+                         * disconnect.  Forcing a warm port reset seems to make
+                         * the device work.
+                         *
+                         * See https://bugzilla.kernel.org/show_bug.cgi?id=41752
+                         */
+                        if (hub_port_inactive(hub, portstatus)) {
+                                int ret;
+
+                                if ((portchange & USB_PORT_STAT_C_CONNECTION))
+                                        clear_port_feature(hub->hdev, port1,
+                                                        USB_PORT_FEAT_C_CONNECTION);
+                                if (portchange & USB_PORT_STAT_C_LINK_STATE)
+                                        clear_port_feature(hub->hdev, port1,
+                                                        USB_PORT_FEAT_C_PORT_LINK_STATE);
+                                if (portchange & USB_PORT_STAT_C_RESET)
+                                        clear_port_feature(hub->hdev, port1,
+                                                        USB_PORT_FEAT_C_RESET);
+                                dev_dbg(hub->intfdev, "hot reset failed, warm reset port %d\n",
+                                                port1);
+                                ret = hub_port_reset(hub, port1,
+                                                udev, HUB_BH_RESET_TIME,
+                                                true);
+                                if ((portchange & USB_PORT_STAT_C_CONNECTION))
+                                        clear_port_feature(hub->hdev, port1,
+                                                        USB_PORT_FEAT_C_CONNECTION);
+                                return ret;
+                        }
+                        /* Device went away? */
+                        if (!(portstatus & USB_PORT_STAT_CONNECTION))
+                                return -ENOTCONN;
+
+                        /* bomb out completely if the connection bounced */
+                        if ((portchange & USB_PORT_STAT_C_CONNECTION))
+                                return -ENOTCONN;
+
+                        /* if we`ve finished resetting, then break out of
+                         * the loop
+                         */
+                        if (!(portstatus & USB_PORT_STAT_RESET) &&
+                            (portstatus & USB_PORT_STAT_ENABLE)) {
+                                if (hub_is_wusb(hub))
+                                        udev->speed = USB_SPEED_WIRELESS;
+                                else if (hub_is_superspeed(hub->hdev))
+                                        udev->speed = USB_SPEED_SUPER;
+                                else if (portstatus & USB_PORT_STAT_HIGH_SPEED)
+                                        udev->speed = USB_SPEED_HIGH;
+                                else if (portstatus & USB_PORT_STAT_LOW_SPEED)
+                                        udev->speed = USB_SPEED_LOW;
+                                else
+                                        udev->speed = USB_SPEED_FULL;
+                                return 0;
+                        }
+                } else {
+                        if (portchange & USB_PORT_STAT_C_BH_RESET)
+                                return 0;
                 }
 
                 /* switch to the long delay after two short delay failures */
@@ -2080,35 +2130,84 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
                         delay = HUB_LONG_RESET_TIME;
 
                 dev_dbg (hub->intfdev,
-                        "port %d not reset yet, waiting %dms\n",
-                        port1, delay);
+                        "port %d not %sreset yet, waiting %dms\n",
+                        port1, warm ? "warm " : "", delay);
         }
 
         return -EBUSY;
 }
 
+static void hub_port_finish_reset(struct usb_hub *hub, int port1,
+                        struct usb_device *udev, int *status, bool warm)
+{
+        switch (*status) {
+        case 0:
+                if (!warm) {
+                        struct usb_hcd *hcd;
+                        /* TRSTRCY = 10 ms; plus some extra */
+                        msleep(10 + 40);
+                        update_devnum(udev, 0);
+                        hcd = bus_to_hcd(udev->bus);
+                        if (hcd->driver->reset_device) {
+                                *status = hcd->driver->reset_device(hcd, udev);
+                                if (*status < 0) {
+                                        dev_err(&udev->dev, "Cannot reset "
+                                                        "HCD device state\n");
+                                        break;
+                                }
+                        }
+                }
+                /* FALL THROUGH */
+        case -ENOTCONN:
+        case -ENODEV:
+                clear_port_feature(hub->hdev,
+                                port1, USB_PORT_FEAT_C_RESET);
+                /* FIXME need disconnect() for NOTATTACHED device */
+                if (warm) {
+                        clear_port_feature(hub->hdev, port1,
+                                        USB_PORT_FEAT_C_BH_PORT_RESET);
+                        clear_port_feature(hub->hdev, port1,
+                                        USB_PORT_FEAT_C_PORT_LINK_STATE);
+                } else {
+                        usb_set_device_state(udev, *status
+                                        ? USB_STATE_NOTATTACHED
+                                        : USB_STATE_DEFAULT);
+                }
+                break;
+        }
+}
+
+/* Handle port reset and port warm(BH) reset (for USB3 protocol ports) */
 static int hub_port_reset(struct usb_hub *hub, int port1,
-                                struct usb_device *udev, unsigned int delay)
+                        struct usb_device *udev, unsigned int delay, bool warm)
 {
         int i, status;
-        struct usb_hcd *hcd;
 
-        hcd = bus_to_hcd(udev->bus);
-        /* Block EHCI CF initialization during the port reset.
-         * Some companion controllers don't like it when they mix.
-         */
-        down_read(&ehci_cf_port_reset_rwsem);
+        if (!warm) {
+                /* Block EHCI CF initialization during the port reset.
+                 * Some companion controllers don't like it when they mix.
+                 */
+                down_read(&ehci_cf_port_reset_rwsem);
+        } else {
+                if (!hub_is_superspeed(hub->hdev)) {
+                        dev_err(hub->intfdev, "only USB3 hub support "
+                                                "warm reset\n");
+                        return -EINVAL;
+                }
+        }
 
         /* Reset the port */
         for (i = 0; i < PORT_RESET_TRIES; i++) {
-                status = set_port_feature(hub->hdev,
-                                port1, USB_PORT_FEAT_RESET);
-                if (status)
+                status = set_port_feature(hub->hdev, port1, (warm ?
+                                        USB_PORT_FEAT_BH_PORT_RESET :
+                                        USB_PORT_FEAT_RESET));
+                if (status) {
                         dev_err(hub->intfdev,
-                                        "cannot reset port %d (err = %d)\n",
-                                        port1, status);
-                else {
-                        status = hub_port_wait_reset(hub, port1, udev, delay);
+                                        "cannot %sreset port %d (err = %d)\n",
+                                        warm ? "warm " : "", port1, status);
+                } else {
+                        status = hub_port_wait_reset(hub, port1, udev, delay,
+                                                                warm);
                         if (status && status != -ENOTCONN)
                                 dev_dbg(hub->intfdev,
                                                 "port_wait_reset: err = %d\n",
@@ -2116,34 +2215,14 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
                 }
 
                 /* return on disconnect or reset */
-                switch (status) {
-                case 0:
-                        /* TRSTRCY = 10 ms; plus some extra */
-                        msleep(10 + 40);
-                        update_devnum(udev, 0);
-                        if (hcd->driver->reset_device) {
-                                status = hcd->driver->reset_device(hcd, udev);
-                                if (status < 0) {
-                                        dev_err(&udev->dev, "Cannot reset "
-                                                        "HCD device state\n");
-                                        break;
-                                }
-                        }
-                        /* FALL THROUGH */
-                case -ENOTCONN:
-                case -ENODEV:
-                        clear_port_feature(hub->hdev,
-                                port1, USB_PORT_FEAT_C_RESET);
-                        /* FIXME need disconnect() for NOTATTACHED device */
-                        usb_set_device_state(udev, status
-                                        ? USB_STATE_NOTATTACHED
-                                        : USB_STATE_DEFAULT);
+                if (status == 0 || status == -ENOTCONN || status == -ENODEV) {
+                        hub_port_finish_reset(hub, port1, udev, &status, warm);
                         goto done;
                 }
 
                 dev_dbg (hub->intfdev,
-                        "port %d not enabled, trying reset again...\n",
-                        port1);
+                        "port %d not enabled, trying %sreset again...\n",
+                        port1, warm ? "warm " : "");
                 delay = HUB_LONG_RESET_TIME;
         }
 
@@ -2151,45 +2230,11 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
                 "Cannot enable port %i.  Maybe the USB cable is bad?\n",
                 port1);
 
- done:
-        up_read(&ehci_cf_port_reset_rwsem);
-        return status;
-}
-
-/* Warm reset a USB3 protocol port */
-static int hub_port_warm_reset(struct usb_hub *hub, int port)
-{
-        int ret;
-        u16 portstatus, portchange;
-
-        if (!hub_is_superspeed(hub->hdev)) {
-                dev_err(hub->intfdev, "only USB3 hub support warm reset\n");
-                return -EINVAL;
-        }
-
-        /* Warm reset the port */
-        ret = set_port_feature(hub->hdev,
-                                port, USB_PORT_FEAT_BH_PORT_RESET);
-        if (ret) {
-                dev_err(hub->intfdev, "cannot warm reset port %d\n", port);
-                return ret;
-        }
-
-        msleep(20);
-        ret = hub_port_status(hub, port, &portstatus, &portchange);
-
-        if (portchange & USB_PORT_STAT_C_RESET)
-                clear_port_feature(hub->hdev, port, USB_PORT_FEAT_C_RESET);
-
-        if (portchange & USB_PORT_STAT_C_BH_RESET)
-                clear_port_feature(hub->hdev, port,
-                                        USB_PORT_FEAT_C_BH_PORT_RESET);
-
-        if (portchange & USB_PORT_STAT_C_LINK_STATE)
-                clear_port_feature(hub->hdev, port,
-                                        USB_PORT_FEAT_C_PORT_LINK_STATE);
+done:
+        if (!warm)
+                up_read(&ehci_cf_port_reset_rwsem);
 
-        return ret;
+        return status;
 }
 
 /* Check if a port is power on */
@@ -2347,6 +2392,10 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
                 }
         }
 
+        /* disable USB2 hardware LPM */
+        if (udev->usb2_hw_lpm_enabled == 1)
+                usb_set_usb2_hardware_lpm(udev, 0);
+
         /* see 7.1.7.6 */
         if (hub_is_superspeed(hub->hdev))
                 status = set_port_feature(hub->hdev,
@@ -2558,7 +2607,12 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg)
         if (status < 0) {
                 dev_dbg(&udev->dev, "can't resume, status %d\n", status);
                 hub_port_logical_disconnect(hub, port1);
+        } else  {
+                /* Try to enable USB2 hardware LPM */
+                if (udev->usb2_hw_lpm_capable == 1)
+                        usb_set_usb2_hardware_lpm(udev, 1);
         }
+
         return status;
 }
 
@@ -2798,7 +2852,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
         int                     i, j, retval;
         unsigned                delay = HUB_SHORT_RESET_TIME;
         enum usb_device_speed   oldspeed = udev->speed;
-        char                    *speed, *type;
+        const char              *speed;
         int                     devnum = udev->devnum;
 
         /* root hub ports have a slightly longer reset period
@@ -2819,7 +2873,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
 
         /* Reset the device; full speed may morph to high speed */
         /* FIXME a USB 2.0 device may morph into SuperSpeed on reset. */
-        retval = hub_port_reset(hub, port1, udev, delay);
+        retval = hub_port_reset(hub, port1, udev, delay, false);
         if (retval < 0)         /* error or disconnect */
                 goto fail;
         /* success, speed is known */
@@ -2858,25 +2912,16 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
         default:
                 goto fail;
         }
- 
-        type = "";
-        switch (udev->speed) {
-        case USB_SPEED_LOW:     speed = "low";  break;
-        case USB_SPEED_FULL:    speed = "full"; break;
-        case USB_SPEED_HIGH:    speed = "high"; break;
-        case USB_SPEED_SUPER:
-                                speed = "super";
-                                break;
-        case USB_SPEED_WIRELESS:
-                                speed = "variable";
-                                type = "Wireless ";
-                                break;
-        default:                speed = "?";    break;
-        }
+
+        if (udev->speed == USB_SPEED_WIRELESS)
+                speed = "variable speed Wireless";
+        else
+                speed = usb_speed_string(udev->speed);
+
         if (udev->speed != USB_SPEED_SUPER)
                 dev_info(&udev->dev,
-                                "%s %s speed %sUSB device number %d using %s\n",
-                                (udev->config) ? "reset" : "new", speed, type,
+                                "%s %s USB device number %d using %s\n",
+                                (udev->config) ? "reset" : "new", speed,
                                 devnum, udev->bus->controller->driver->name);
 
         /* Set up TT records, if needed  */
@@ -2949,7 +2994,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
                                         buf->bMaxPacketSize0;
                         kfree(buf);
 
-                        retval = hub_port_reset(hub, port1, udev, delay);
+                        retval = hub_port_reset(hub, port1, udev, delay, false);
                         if (retval < 0)         /* error or disconnect */
                                 goto fail;
                         if (oldspeed != udev->speed) {
@@ -3023,7 +3068,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
                 i = 512;
         else
                 i = udev->descriptor.bMaxPacketSize0;
-        if (le16_to_cpu(udev->ep0.desc.wMaxPacketSize) != i) {
+        if (usb_endpoint_maxp(&udev->ep0.desc) != i) {
                 if (udev->speed == USB_SPEED_LOW ||
                                 !(i == 8 || i == 16 || i == 32 || i == 64)) {
                         dev_err(&udev->dev, "Invalid ep0 maxpacket: %d\n", i);
@@ -3047,6 +3092,15 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
                 goto fail;
         }
 
+        if (udev->wusb == 0 && le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0201) {
+                retval = usb_get_bos_descriptor(udev);
+                if (!retval) {
+                        if (udev->bos->ext_cap && (USB_LPM_SUPPORT &
+                                le32_to_cpu(udev->bos->ext_cap->bmAttributes)))
+                                        udev->lpm_capable = 1;
+                }
+        }
+
         retval = 0;
         /* notify HCD that we have a device connected and addressed */
         if (hcd->driver->update_device)
@@ -3570,7 +3624,8 @@ static void hub_events(void)
                                 (portstatus & USB_PORT_STAT_LINK_STATE)
                                         == USB_SS_PORT_LS_SS_INACTIVE) {
                                 dev_dbg(hub_dev, "warm reset port %d\n", i);
-                                hub_port_warm_reset(hub, i);
+                                hub_port_reset(hub, i, NULL,
+                                                HUB_BH_RESET_TIME, true);
                         }
 
                         if (connect_change)
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 0b5ec234c787..b3bdfede45e6 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -435,7 +435,7 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev,
 
                         len = sg->length;
                         if (length) {
-                                len = min_t(unsigned, len, length);
+                                len = min_t(size_t, len, length);
                                 length -= len;
                                 if (length == 0)
                                         io->entries = i + 1;
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 81ce6a8e1d94..d6a8d8269bfb 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -38,6 +38,27 @@ static const struct usb_device_id usb_quirk_list[] = {
         /* Creative SB Audigy 2 NX */
         { USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME },
 
+        /* Logitech Webcam C200 */
+        { USB_DEVICE(0x046d, 0x0802), .driver_info = USB_QUIRK_RESET_RESUME },
+
+        /* Logitech Webcam C250 */
+        { USB_DEVICE(0x046d, 0x0804), .driver_info = USB_QUIRK_RESET_RESUME },
+
+        /* Logitech Webcam C300 */
+        { USB_DEVICE(0x046d, 0x0805), .driver_info = USB_QUIRK_RESET_RESUME },
+
+        /* Logitech Webcam B/C500 */
+        { USB_DEVICE(0x046d, 0x0807), .driver_info = USB_QUIRK_RESET_RESUME },
+
+        /* Logitech Webcam Pro 9000 */
+        { USB_DEVICE(0x046d, 0x0809), .driver_info = USB_QUIRK_RESET_RESUME },
+
+        /* Logitech Webcam C310 */
+        { USB_DEVICE(0x046d, 0x081b), .driver_info = USB_QUIRK_RESET_RESUME },
+
+        /* Logitech Webcam C270 */
+        { USB_DEVICE(0x046d, 0x0825), .driver_info = USB_QUIRK_RESET_RESUME },
+
         /* Logitech Harmony 700-series */
         { USB_DEVICE(0x046d, 0xc122), .driver_info = USB_QUIRK_DELAY_INIT },
 
@@ -69,6 +90,9 @@ static const struct usb_device_id usb_quirk_list[] = {
         { USB_DEVICE(0x06a3, 0x0006), .driver_info =
                         USB_QUIRK_CONFIG_INTF_STRINGS },
 
+        /* Guillemot Webcam Hercules Dualpix Exchange*/
+        { USB_DEVICE(0x06f8, 0x0804), .driver_info = USB_QUIRK_RESET_RESUME },
+
         /* M-Systems Flash Disk Pioneers */
         { USB_DEVICE(0x08ec, 0x1000), .driver_info = USB_QUIRK_RESET_RESUME },
 
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index cf05b97693ea..662c0cf3a3e1 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -412,6 +412,56 @@ set_level(struct device *dev, struct device_attribute *attr,
 
 static DEVICE_ATTR(level, S_IRUGO | S_IWUSR, show_level, set_level);
 
+static ssize_t
+show_usb2_hardware_lpm(struct device *dev, struct device_attribute *attr,
+                                char *buf)
+{
+        struct usb_device *udev = to_usb_device(dev);
+        const char *p;
+
+        if (udev->usb2_hw_lpm_enabled == 1)
+                p = "enabled";
+        else
+                p = "disabled";
+
+        return sprintf(buf, "%s\n", p);
+}
+
+static ssize_t
+set_usb2_hardware_lpm(struct device *dev, struct device_attribute *attr,
+                const char *buf, size_t count)
+{
+        struct usb_device *udev = to_usb_device(dev);
+        bool value;
+        int ret;
+
+        usb_lock_device(udev);
+
+        ret = strtobool(buf, &value);
+
+        if (!ret)
+                ret = usb_set_usb2_hardware_lpm(udev, value);
+
+        usb_unlock_device(udev);
+
+        if (!ret)
+                return count;
+
+        return ret;
+}
+
+static DEVICE_ATTR(usb2_hardware_lpm, S_IRUGO | S_IWUSR, show_usb2_hardware_lpm,
+                        set_usb2_hardware_lpm);
+
+static struct attribute *usb2_hardware_lpm_attr[] = {
+        &dev_attr_usb2_hardware_lpm.attr,
+        NULL,
+};
+static struct attribute_group usb2_hardware_lpm_attr_group = {
+        .name   = power_group_name,
+        .attrs  = usb2_hardware_lpm_attr,
+};
+
 static struct attribute *power_attrs[] = {
         &dev_attr_autosuspend.attr,
         &dev_attr_level.attr,
@@ -428,13 +478,20 @@ static int add_power_attributes(struct device *dev)
 {
         int rc = 0;
 
-        if (is_usb_device(dev))
+        if (is_usb_device(dev)) {
+                struct usb_device *udev = to_usb_device(dev);
                 rc = sysfs_merge_group(&dev->kobj, &power_attr_group);
+                if (udev->usb2_hw_lpm_capable == 1)
+                        rc = sysfs_merge_group(&dev->kobj,
+                                        &usb2_hardware_lpm_attr_group);
+        }
+
         return rc;
 }
 
 static void remove_power_attributes(struct device *dev)
 {
+        sysfs_unmerge_group(&dev->kobj, &usb2_hardware_lpm_attr_group);
         sysfs_unmerge_group(&dev->kobj, &power_attr_group);
 }
 
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index ae334b067c13..909625b91eb3 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -350,7 +350,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
                         dev->state < USB_STATE_CONFIGURED)
                 return -ENODEV;
 
-        max = le16_to_cpu(ep->desc.wMaxPacketSize);
+        max = usb_endpoint_maxp(&ep->desc);
         if (max <= 0) {
                 dev_dbg(&dev->dev,
                         "bogus endpoint ep%d%s in %s (bad maxpacket %d)\n",
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 8706fc97e60f..73cd90012ec5 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -225,6 +225,7 @@ static void usb_release_dev(struct device *dev)
         hcd = bus_to_hcd(udev->bus);
 
         usb_destroy_configuration(udev);
+        usb_release_bos_descriptor(udev);
         usb_put_hcd(hcd);
         kfree(udev->product);
         kfree(udev->manufacturer);
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index d44d4b7bbf17..3888778582c4 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -28,6 +28,8 @@ extern int usb_remove_device(struct usb_device *udev);
 
 extern int usb_get_device_descriptor(struct usb_device *dev,
                 unsigned int size);
+extern int usb_get_bos_descriptor(struct usb_device *dev);
+extern void usb_release_bos_descriptor(struct usb_device *dev);
 extern char *usb_cache_string(struct usb_device *udev, int index);
 extern int usb_set_configuration(struct usb_device *dev, int configuration);
 extern int usb_choose_configuration(struct usb_device *udev);
@@ -80,6 +82,7 @@ extern int usb_remote_wakeup(struct usb_device *dev);
 extern int usb_runtime_suspend(struct device *dev);
 extern int usb_runtime_resume(struct device *dev);
 extern int usb_runtime_idle(struct device *dev);
+extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable);
 
 #else
 
@@ -94,6 +97,10 @@ static inline int usb_remote_wakeup(struct usb_device *udev)
         return 0;
 }
 
+static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
+{
+        return 0;
+}
 #endif
 
 extern struct bus_type usb_bus_type;
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
new file mode 100644
index 000000000000..3c1d67d324fd
--- /dev/null
+++ b/drivers/usb/dwc3/Kconfig
@@ -0,0 +1,25 @@
+config USB_DWC3
+        tristate "DesignWare USB3 DRD Core Support"
+        depends on (USB || USB_GADGET)
+        select USB_OTG_UTILS
+        help
+          Say Y or M here if your system has a Dual Role SuperSpeed
+          USB controller based on the DesignWare USB3 IP Core.
+
+          If you choose to build this driver is a dynamically linked
+          module, the module will be called dwc3.ko.
+
+if USB_DWC3
+
+config USB_DWC3_DEBUG
+        bool "Enable Debugging Messages"
+        help
+          Say Y here to enable debugging messages on DWC3 Driver.
+
+config USB_DWC3_VERBOSE
+        bool "Enable Verbose Debugging Messages"
+        depends on USB_DWC3_DEBUG
+        help
+          Say Y here to enable verbose debugging messages on DWC3 Driver.
+
+endif
diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile
new file mode 100644
index 000000000000..593d1dbc465b
--- /dev/null
+++ b/drivers/usb/dwc3/Makefile
@@ -0,0 +1,36 @@
+ccflags-$(CONFIG_USB_DWC3_DEBUG)        := -DDEBUG
+ccflags-$(CONFIG_USB_DWC3_VERBOSE)      += -DVERBOSE_DEBUG
+
+obj-$(CONFIG_USB_DWC3)                  += dwc3.o
+
+dwc3-y                                  := core.o
+
+ifneq ($(CONFIG_USB_GADGET_DWC3),)
+        dwc3-y                          += gadget.o ep0.o
+endif
+
+ifneq ($(CONFIG_DEBUG_FS),)
+        dwc3-y                          += debugfs.o
+endif
+
+##
+# Platform-specific glue layers go here
+#
+# NOTICE: Make sure your glue layer doesn't depend on anything
+# which is arch-specific and that it compiles on all situations.
+#
+# We want to keep this requirement in order to be able to compile
+# the entire driver (with all its glue layers) on several architectures
+# and make sure it compiles fine. This will also help with allmodconfig
+# and allyesconfig builds.
+#
+# The only exception is the PCI glue layer, but that's only because
+# PCI doesn't provide nops if CONFIG_PCI isn't enabled.
+##
+
+obj-$(CONFIG_USB_DWC3)          += dwc3-omap.o
+
+ifneq ($(CONFIG_PCI),)
+        obj-$(CONFIG_USB_DWC3)          += dwc3-pci.o
+endif
+
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
new file mode 100644
index 000000000000..717ebc9ff941
--- /dev/null
+++ b/drivers/usb/dwc3/core.c
@@ -0,0 +1,484 @@
+/**
+ * core.c - DesignWare USB3 DRD Controller Core file
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@ti.com>,
+ *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <linux/module.h>
+
+#include "core.h"
+#include "gadget.h"
+#include "io.h"
+
+#include "debug.h"
+
+/**
+ * dwc3_core_soft_reset - Issues core soft reset and PHY reset
+ * @dwc: pointer to our context structure
+ */
+static void dwc3_core_soft_reset(struct dwc3 *dwc)
+{
+        u32             reg;
+
+        /* Before Resetting PHY, put Core in Reset */
+        reg = dwc3_readl(dwc->regs, DWC3_GCTL);
+        reg |= DWC3_GCTL_CORESOFTRESET;
+        dwc3_writel(dwc->regs, DWC3_GCTL, reg);
+
+        /* Assert USB3 PHY reset */
+        reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
+        reg |= DWC3_GUSB3PIPECTL_PHYSOFTRST;
+        dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
+
+        /* Assert USB2 PHY reset */
+        reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
+        reg |= DWC3_GUSB2PHYCFG_PHYSOFTRST;
+        dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
+
+        mdelay(100);
+
+        /* Clear USB3 PHY reset */
+        reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
+        reg &= ~DWC3_GUSB3PIPECTL_PHYSOFTRST;
+        dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
+
+        /* Clear USB2 PHY reset */
+        reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
+        reg &= ~DWC3_GUSB2PHYCFG_PHYSOFTRST;
+        dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
+
+        /* After PHYs are stable we can take Core out of reset state */
+        reg = dwc3_readl(dwc->regs, DWC3_GCTL);
+        reg &= ~DWC3_GCTL_CORESOFTRESET;
+        dwc3_writel(dwc->regs, DWC3_GCTL, reg);
+}
+
+/**
+ * dwc3_free_one_event_buffer - Frees one event buffer
+ * @dwc: Pointer to our controller context structure
+ * @evt: Pointer to event buffer to be freed
+ */
+static void dwc3_free_one_event_buffer(struct dwc3 *dwc,
+                struct dwc3_event_buffer *evt)
+{
+        dma_free_coherent(dwc->dev, evt->length, evt->buf, evt->dma);
+        kfree(evt);
+}
+
+/**
+ * dwc3_alloc_one_event_buffer - Allocated one event buffer structure
+ * @dwc: Pointer to our controller context structure
+ * @length: size of the event buffer
+ *
+ * Returns a pointer to the allocated event buffer structure on succes
+ * otherwise ERR_PTR(errno).
+ */
+static struct dwc3_event_buffer *__devinit
+dwc3_alloc_one_event_buffer(struct dwc3 *dwc, unsigned length)
+{
+        struct dwc3_event_buffer        *evt;
+
+        evt = kzalloc(sizeof(*evt), GFP_KERNEL);
+        if (!evt)
+                return ERR_PTR(-ENOMEM);
+
+        evt->dwc        = dwc;
+        evt->length     = length;
+        evt->buf        = dma_alloc_coherent(dwc->dev, length,
+                        &evt->dma, GFP_KERNEL);
+        if (!evt->buf) {
+                kfree(evt);
+                return ERR_PTR(-ENOMEM);
+        }
+
+        return evt;
+}
+
+/**
+ * dwc3_free_event_buffers - frees all allocated event buffers
+ * @dwc: Pointer to our controller context structure
+ */
+static void dwc3_free_event_buffers(struct dwc3 *dwc)
+{
+        struct dwc3_event_buffer        *evt;
+        int i;
+
+        for (i = 0; i < DWC3_EVENT_BUFFERS_NUM; i++) {
+                evt = dwc->ev_buffs[i];
+                if (evt) {
+                        dwc3_free_one_event_buffer(dwc, evt);
+                        dwc->ev_buffs[i] = NULL;
+                }
+        }
+}
+
+/**
+ * dwc3_alloc_event_buffers - Allocates @num event buffers of size @length
+ * @dwc: Pointer to out controller context structure
+ * @num: number of event buffers to allocate
+ * @length: size of event buffer
+ *
+ * Returns 0 on success otherwise negative errno. In error the case, dwc
+ * may contain some buffers allocated but not all which were requested.
+ */
+static int __devinit dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned num,
+                unsigned length)
+{
+        int                     i;
+
+        for (i = 0; i < num; i++) {
+                struct dwc3_event_buffer        *evt;
+
+                evt = dwc3_alloc_one_event_buffer(dwc, length);
+                if (IS_ERR(evt)) {
+                        dev_err(dwc->dev, "can't allocate event buffer\n");
+                        return PTR_ERR(evt);
+                }
+                dwc->ev_buffs[i] = evt;
+        }
+
+        return 0;
+}
+
+/**
+ * dwc3_event_buffers_setup - setup our allocated event buffers
+ * @dwc: Pointer to out controller context structure
+ *
+ * Returns 0 on success otherwise negative errno.
+ */
+static int __devinit dwc3_event_buffers_setup(struct dwc3 *dwc)
+{
+        struct dwc3_event_buffer        *evt;
+        int                             n;
+
+        for (n = 0; n < DWC3_EVENT_BUFFERS_NUM; n++) {
+                evt = dwc->ev_buffs[n];
+                dev_dbg(dwc->dev, "Event buf %p dma %08llx length %d\n",
+                                evt->buf, (unsigned long long) evt->dma,
+                                evt->length);
+
+                dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n),
+                                lower_32_bits(evt->dma));
+                dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n),
+                                upper_32_bits(evt->dma));
+                dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n),
+                                evt->length & 0xffff);
+                dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(n), 0);
+        }
+
+        return 0;
+}
+
+static void dwc3_event_buffers_cleanup(struct dwc3 *dwc)
+{
+        struct dwc3_event_buffer        *evt;
+        int                             n;
+
+        for (n = 0; n < DWC3_EVENT_BUFFERS_NUM; n++) {
+                evt = dwc->ev_buffs[n];
+                dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n), 0);
+                dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), 0);
+                dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), 0);
+                dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(n), 0);
+        }
+}
+
+static void __devinit dwc3_cache_hwparams(struct dwc3 *dwc)
+{
+        struct dwc3_hwparams    *parms = &dwc->hwparams;
+
+        parms->hwparams0 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS0);
+        parms->hwparams1 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS1);
+        parms->hwparams2 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS2);
+        parms->hwparams3 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS3);
+        parms->hwparams4 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS4);
+        parms->hwparams5 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS5);
+        parms->hwparams6 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS6);
+        parms->hwparams7 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS7);
+        parms->hwparams8 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS8);
+}
+
+/**
+ * dwc3_core_init - Low-level initialization of DWC3 Core
+ * @dwc: Pointer to our controller context structure
+ *
+ * Returns 0 on success otherwise negative errno.
+ */
+static int __devinit dwc3_core_init(struct dwc3 *dwc)
+{
+        unsigned long           timeout;
+        u32                     reg;
+        int                     ret;
+
+        reg = dwc3_readl(dwc->regs, DWC3_GSNPSID);
+        /* This should read as U3 followed by revision number */
+        if ((reg & DWC3_GSNPSID_MASK) != 0x55330000) {
+                dev_err(dwc->dev, "this is not a DesignWare USB3 DRD Core\n");
+                ret = -ENODEV;
+                goto err0;
+        }
+        dwc->revision = reg & DWC3_GSNPSREV_MASK;
+
+        dwc3_core_soft_reset(dwc);
+
+        /* issue device SoftReset too */
+        timeout = jiffies + msecs_to_jiffies(500);
+        dwc3_writel(dwc->regs, DWC3_DCTL, DWC3_DCTL_CSFTRST);
+        do {
+                reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+                if (!(reg & DWC3_DCTL_CSFTRST))
+                        break;
+
+                if (time_after(jiffies, timeout)) {
+                        dev_err(dwc->dev, "Reset Timed Out\n");
+                        ret = -ETIMEDOUT;
+                        goto err0;
+                }
+
+                cpu_relax();
+        } while (true);
+
+        ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_NUM,
+                        DWC3_EVENT_BUFFERS_SIZE);
+        if (ret) {
+                dev_err(dwc->dev, "failed to allocate event buffers\n");
+                ret = -ENOMEM;
+                goto err1;
+        }
+
+        ret = dwc3_event_buffers_setup(dwc);
+        if (ret) {
+                dev_err(dwc->dev, "failed to setup event buffers\n");
+                goto err1;
+        }
+
+        dwc3_cache_hwparams(dwc);
+
+        return 0;
+
+err1:
+        dwc3_free_event_buffers(dwc);
+
+err0:
+        return ret;
+}
+
+static void dwc3_core_exit(struct dwc3 *dwc)
+{
+        dwc3_event_buffers_cleanup(dwc);
+        dwc3_free_event_buffers(dwc);
+}
+
+#define DWC3_ALIGN_MASK         (16 - 1)
+
+static int __devinit dwc3_probe(struct platform_device *pdev)
+{
+        const struct platform_device_id *id = platform_get_device_id(pdev);
+        struct resource         *res;
+        struct dwc3             *dwc;
+        void __iomem            *regs;
+        unsigned int            features = id->driver_data;
+        int                     ret = -ENOMEM;
+        int                     irq;
+        void                    *mem;
+
+        mem = kzalloc(sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);
+        if (!mem) {
+                dev_err(&pdev->dev, "not enough memory\n");
+                goto err0;
+        }
+        dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1);
+        dwc->mem = mem;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
+                dev_err(&pdev->dev, "missing resource\n");
+                goto err1;
+        }
+
+        res = request_mem_region(res->start, resource_size(res),
+                        dev_name(&pdev->dev));
+        if (!res) {
+                dev_err(&pdev->dev, "can't request mem region\n");
+                goto err1;
+        }
+
+        regs = ioremap(res->start, resource_size(res));
+        if (!regs) {
+                dev_err(&pdev->dev, "ioremap failed\n");
+                goto err2;
+        }
+
+        irq = platform_get_irq(pdev, 0);
+        if (irq < 0) {
+                dev_err(&pdev->dev, "missing IRQ\n");
+                goto err3;
+        }
+
+        spin_lock_init(&dwc->lock);
+        platform_set_drvdata(pdev, dwc);
+
+        dwc->regs       = regs;
+        dwc->regs_size  = resource_size(res);
+        dwc->dev        = &pdev->dev;
+        dwc->irq        = irq;
+
+        pm_runtime_enable(&pdev->dev);
+        pm_runtime_get_sync(&pdev->dev);
+        pm_runtime_forbid(&pdev->dev);
+
+        ret = dwc3_core_init(dwc);
+        if (ret) {
+                dev_err(&pdev->dev, "failed to initialize core\n");
+                goto err3;
+        }
+
+        if (features & DWC3_HAS_PERIPHERAL) {
+                ret = dwc3_gadget_init(dwc);
+                if (ret) {
+                        dev_err(&pdev->dev, "failed to initialized gadget\n");
+                        goto err4;
+                }
+        }
+
+        ret = dwc3_debugfs_init(dwc);
+        if (ret) {
+                dev_err(&pdev->dev, "failed to initialize debugfs\n");
+                goto err5;
+        }
+
+        pm_runtime_allow(&pdev->dev);
+
+        return 0;
+
+err5:
+        if (features & DWC3_HAS_PERIPHERAL)
+                dwc3_gadget_exit(dwc);
+
+err4:
+        dwc3_core_exit(dwc);
+
+err3:
+        iounmap(regs);
+
+err2:
+        release_mem_region(res->start, resource_size(res));
+
+err1:
+        kfree(dwc->mem);
+
+err0:
+        return ret;
+}
+
+static int __devexit dwc3_remove(struct platform_device *pdev)
+{
+        const struct platform_device_id *id = platform_get_device_id(pdev);
+        struct dwc3     *dwc = platform_get_drvdata(pdev);
+        struct resource *res;
+        unsigned int    features = id->driver_data;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+        pm_runtime_put(&pdev->dev);
+        pm_runtime_disable(&pdev->dev);
+
+        dwc3_debugfs_exit(dwc);
+
+        if (features & DWC3_HAS_PERIPHERAL)
+                dwc3_gadget_exit(dwc);
+
+        dwc3_core_exit(dwc);
+        release_mem_region(res->start, resource_size(res));
+        iounmap(dwc->regs);
+        kfree(dwc->mem);
+
+        return 0;
+}
+
+static const struct platform_device_id dwc3_id_table[] __devinitconst = {
+        {
+                .name   = "dwc3-omap",
+                .driver_data = (DWC3_HAS_PERIPHERAL
+                        | DWC3_HAS_XHCI
+                        | DWC3_HAS_OTG),
+        },
+        {
+                .name   = "dwc3-pci",
+                .driver_data = DWC3_HAS_PERIPHERAL,
+        },
+        {  },   /* Terminating Entry */
+};
+MODULE_DEVICE_TABLE(platform, dwc3_id_table);
+
+static struct platform_driver dwc3_driver = {
+        .probe          = dwc3_probe,
+        .remove         = __devexit_p(dwc3_remove),
+        .driver         = {
+                .name   = "dwc3",
+        },
+        .id_table       = dwc3_id_table,
+};
+
+MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver");
+
+static int __devinit dwc3_init(void)
+{
+        return platform_driver_register(&dwc3_driver);
+}
+module_init(dwc3_init);
+
+static void __exit dwc3_exit(void)
+{
+        platform_driver_unregister(&dwc3_driver);
+}
+module_exit(dwc3_exit);
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
new file mode 100644
index 000000000000..29a8e1679e12
--- /dev/null
+++ b/drivers/usb/dwc3/core.h
@@ -0,0 +1,768 @@
+/**
+ * core.h - DesignWare USB3 DRD Core Header
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@ti.com>,
+ *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __DRIVERS_USB_DWC3_CORE_H
+#define __DRIVERS_USB_DWC3_CORE_H
+
+#include <linux/device.h>
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/dma-mapping.h>
+#include <linux/mm.h>
+#include <linux/debugfs.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+/* Global constants */
+#define DWC3_ENDPOINTS_NUM      32
+
+#define DWC3_EVENT_BUFFERS_NUM  2
+#define DWC3_EVENT_BUFFERS_SIZE PAGE_SIZE
+#define DWC3_EVENT_TYPE_MASK    0xfe
+
+#define DWC3_EVENT_TYPE_DEV     0
+#define DWC3_EVENT_TYPE_CARKIT  3
+#define DWC3_EVENT_TYPE_I2C     4
+
+#define DWC3_DEVICE_EVENT_DISCONNECT            0
+#define DWC3_DEVICE_EVENT_RESET                 1
+#define DWC3_DEVICE_EVENT_CONNECT_DONE          2
+#define DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE    3
+#define DWC3_DEVICE_EVENT_WAKEUP                4
+#define DWC3_DEVICE_EVENT_EOPF                  6
+#define DWC3_DEVICE_EVENT_SOF                   7
+#define DWC3_DEVICE_EVENT_ERRATIC_ERROR         9
+#define DWC3_DEVICE_EVENT_CMD_CMPL              10
+#define DWC3_DEVICE_EVENT_OVERFLOW              11
+
+#define DWC3_GEVNTCOUNT_MASK    0xfffc
+#define DWC3_GSNPSID_MASK       0xffff0000
+#define DWC3_GSNPSREV_MASK      0xffff
+
+/* Global Registers */
+#define DWC3_GSBUSCFG0          0xc100
+#define DWC3_GSBUSCFG1          0xc104
+#define DWC3_GTXTHRCFG          0xc108
+#define DWC3_GRXTHRCFG          0xc10c
+#define DWC3_GCTL               0xc110
+#define DWC3_GEVTEN             0xc114
+#define DWC3_GSTS               0xc118
+#define DWC3_GSNPSID            0xc120
+#define DWC3_GGPIO              0xc124
+#define DWC3_GUID               0xc128
+#define DWC3_GUCTL              0xc12c
+#define DWC3_GBUSERRADDR0       0xc130
+#define DWC3_GBUSERRADDR1       0xc134
+#define DWC3_GPRTBIMAP0         0xc138
+#define DWC3_GPRTBIMAP1         0xc13c
+#define DWC3_GHWPARAMS0         0xc140
+#define DWC3_GHWPARAMS1         0xc144
+#define DWC3_GHWPARAMS2         0xc148
+#define DWC3_GHWPARAMS3         0xc14c
+#define DWC3_GHWPARAMS4         0xc150
+#define DWC3_GHWPARAMS5         0xc154
+#define DWC3_GHWPARAMS6         0xc158
+#define DWC3_GHWPARAMS7         0xc15c
+#define DWC3_GDBGFIFOSPACE      0xc160
+#define DWC3_GDBGLTSSM          0xc164
+#define DWC3_GPRTBIMAP_HS0      0xc180
+#define DWC3_GPRTBIMAP_HS1      0xc184
+#define DWC3_GPRTBIMAP_FS0      0xc188
+#define DWC3_GPRTBIMAP_FS1      0xc18c
+
+#define DWC3_GUSB2PHYCFG(n)     (0xc200 + (n * 0x04))
+#define DWC3_GUSB2I2CCTL(n)     (0xc240 + (n * 0x04))
+
+#define DWC3_GUSB2PHYACC(n)     (0xc280 + (n * 0x04))
+
+#define DWC3_GUSB3PIPECTL(n)    (0xc2c0 + (n * 0x04))
+
+#define DWC3_GTXFIFOSIZ(n)      (0xc300 + (n * 0x04))
+#define DWC3_GRXFIFOSIZ(n)      (0xc380 + (n * 0x04))
+
+#define DWC3_GEVNTADRLO(n)      (0xc400 + (n * 0x10))
+#define DWC3_GEVNTADRHI(n)      (0xc404 + (n * 0x10))
+#define DWC3_GEVNTSIZ(n)        (0xc408 + (n * 0x10))
+#define DWC3_GEVNTCOUNT(n)      (0xc40c + (n * 0x10))
+
+#define DWC3_GHWPARAMS8         0xc600
+
+/* Device Registers */
+#define DWC3_DCFG               0xc700
+#define DWC3_DCTL               0xc704
+#define DWC3_DEVTEN             0xc708
+#define DWC3_DSTS               0xc70c
+#define DWC3_DGCMDPAR           0xc710
+#define DWC3_DGCMD              0xc714
+#define DWC3_DALEPENA           0xc720
+#define DWC3_DEPCMDPAR2(n)      (0xc800 + (n * 0x10))
+#define DWC3_DEPCMDPAR1(n)      (0xc804 + (n * 0x10))
+#define DWC3_DEPCMDPAR0(n)      (0xc808 + (n * 0x10))
+#define DWC3_DEPCMD(n)          (0xc80c + (n * 0x10))
+
+/* OTG Registers */
+#define DWC3_OCFG               0xcc00
+#define DWC3_OCTL               0xcc04
+#define DWC3_OEVTEN             0xcc08
+#define DWC3_OSTS               0xcc0C
+
+/* Bit fields */
+
+/* Global Configuration Register */
+#define DWC3_GCTL_PWRDNSCALE(n) (n << 19)
+#define DWC3_GCTL_U2RSTECN      (1 << 16)
+#define DWC3_GCTL_RAMCLKSEL(x)  ((x & DWC3_GCTL_CLK_MASK) << 6)
+#define DWC3_GCTL_CLK_BUS       (0)
+#define DWC3_GCTL_CLK_PIPE      (1)
+#define DWC3_GCTL_CLK_PIPEHALF  (2)
+#define DWC3_GCTL_CLK_MASK      (3)
+
+#define DWC3_GCTL_PRTCAPDIR(n)  (n << 12)
+#define DWC3_GCTL_PRTCAP_HOST   1
+#define DWC3_GCTL_PRTCAP_DEVICE 2
+#define DWC3_GCTL_PRTCAP_OTG    3
+
+#define DWC3_GCTL_CORESOFTRESET (1 << 11)
+#define DWC3_GCTL_SCALEDOWN(n)  (n << 4)
+#define DWC3_GCTL_DISSCRAMBLE   (1 << 3)
+#define DWC3_GCTL_DSBLCLKGTNG   (1 << 0)
+
+/* Global USB2 PHY Configuration Register */
+#define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31)
+#define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6)
+
+/* Global USB3 PIPE Control Register */
+#define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31)
+#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17)
+
+/* Global HWPARAMS1 Register */
+#define DWC3_GHWPARAMS1_EN_PWROPT(n)    ((n & (3 << 24)) >> 24)
+#define DWC3_GHWPARAMS1_EN_PWROPT_NO    0
+#define DWC3_GHWPARAMS1_EN_PWROPT_CLK   1
+
+/* Device Configuration Register */
+#define DWC3_DCFG_DEVADDR(addr) ((addr) << 3)
+#define DWC3_DCFG_DEVADDR_MASK  DWC3_DCFG_DEVADDR(0x7f)
+
+#define DWC3_DCFG_SPEED_MASK    (7 << 0)
+#define DWC3_DCFG_SUPERSPEED    (4 << 0)
+#define DWC3_DCFG_HIGHSPEED     (0 << 0)
+#define DWC3_DCFG_FULLSPEED2    (1 << 0)
+#define DWC3_DCFG_LOWSPEED      (2 << 0)
+#define DWC3_DCFG_FULLSPEED1    (3 << 0)
+
+/* Device Control Register */
+#define DWC3_DCTL_RUN_STOP      (1 << 31)
+#define DWC3_DCTL_CSFTRST       (1 << 30)
+#define DWC3_DCTL_LSFTRST       (1 << 29)
+
+#define DWC3_DCTL_HIRD_THRES_MASK       (0x1f << 24)
+#define DWC3_DCTL_HIRD_THRES(n) (((n) & DWC3_DCTL_HIRD_THRES_MASK) >> 24)
+
+#define DWC3_DCTL_APPL1RES      (1 << 23)
+
+#define DWC3_DCTL_INITU2ENA     (1 << 12)
+#define DWC3_DCTL_ACCEPTU2ENA   (1 << 11)
+#define DWC3_DCTL_INITU1ENA     (1 << 10)
+#define DWC3_DCTL_ACCEPTU1ENA   (1 << 9)
+#define DWC3_DCTL_TSTCTRL_MASK  (0xf << 1)
+
+#define DWC3_DCTL_ULSTCHNGREQ_MASK      (0x0f << 5)
+#define DWC3_DCTL_ULSTCHNGREQ(n) (((n) << 5) & DWC3_DCTL_ULSTCHNGREQ_MASK)
+
+#define DWC3_DCTL_ULSTCHNG_NO_ACTION    (DWC3_DCTL_ULSTCHNGREQ(0))
+#define DWC3_DCTL_ULSTCHNG_SS_DISABLED  (DWC3_DCTL_ULSTCHNGREQ(4))
+#define DWC3_DCTL_ULSTCHNG_RX_DETECT    (DWC3_DCTL_ULSTCHNGREQ(5))
+#define DWC3_DCTL_ULSTCHNG_SS_INACTIVE  (DWC3_DCTL_ULSTCHNGREQ(6))
+#define DWC3_DCTL_ULSTCHNG_RECOVERY     (DWC3_DCTL_ULSTCHNGREQ(8))
+#define DWC3_DCTL_ULSTCHNG_COMPLIANCE   (DWC3_DCTL_ULSTCHNGREQ(10))
+#define DWC3_DCTL_ULSTCHNG_LOOPBACK     (DWC3_DCTL_ULSTCHNGREQ(11))
+
+/* Device Event Enable Register */
+#define DWC3_DEVTEN_VNDRDEVTSTRCVEDEN   (1 << 12)
+#define DWC3_DEVTEN_EVNTOVERFLOWEN      (1 << 11)
+#define DWC3_DEVTEN_CMDCMPLTEN          (1 << 10)
+#define DWC3_DEVTEN_ERRTICERREN         (1 << 9)
+#define DWC3_DEVTEN_SOFEN               (1 << 7)
+#define DWC3_DEVTEN_EOPFEN              (1 << 6)
+#define DWC3_DEVTEN_WKUPEVTEN           (1 << 4)
+#define DWC3_DEVTEN_ULSTCNGEN           (1 << 3)
+#define DWC3_DEVTEN_CONNECTDONEEN       (1 << 2)
+#define DWC3_DEVTEN_USBRSTEN            (1 << 1)
+#define DWC3_DEVTEN_DISCONNEVTEN        (1 << 0)
+
+/* Device Status Register */
+#define DWC3_DSTS_PWRUPREQ              (1 << 24)
+#define DWC3_DSTS_COREIDLE              (1 << 23)
+#define DWC3_DSTS_DEVCTRLHLT            (1 << 22)
+
+#define DWC3_DSTS_USBLNKST_MASK         (0x0f << 18)
+#define DWC3_DSTS_USBLNKST(n)           (((n) & DWC3_DSTS_USBLNKST_MASK) >> 18)
+
+#define DWC3_DSTS_RXFIFOEMPTY           (1 << 17)
+
+#define DWC3_DSTS_SOFFN_MASK            (0x3ff << 3)
+#define DWC3_DSTS_SOFFN(n)              (((n) & DWC3_DSTS_SOFFN_MASK) >> 3)
+
+#define DWC3_DSTS_CONNECTSPD            (7 << 0)
+
+#define DWC3_DSTS_SUPERSPEED            (4 << 0)
+#define DWC3_DSTS_HIGHSPEED             (0 << 0)
+#define DWC3_DSTS_FULLSPEED2            (1 << 0)
+#define DWC3_DSTS_LOWSPEED              (2 << 0)
+#define DWC3_DSTS_FULLSPEED1            (3 << 0)
+
+/* Device Generic Command Register */
+#define DWC3_DGCMD_SET_LMP              0x01
+#define DWC3_DGCMD_SET_PERIODIC_PAR     0x02
+#define DWC3_DGCMD_XMIT_FUNCTION        0x03
+#define DWC3_DGCMD_SELECTED_FIFO_FLUSH  0x09
+#define DWC3_DGCMD_ALL_FIFO_FLUSH       0x0a
+#define DWC3_DGCMD_SET_ENDPOINT_NRDY    0x0c
+#define DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK 0x10
+
+/* Device Endpoint Command Register */
+#define DWC3_DEPCMD_PARAM_SHIFT         16
+#define DWC3_DEPCMD_PARAM(x)            (x << DWC3_DEPCMD_PARAM_SHIFT)
+#define DWC3_DEPCMD_GET_RSC_IDX(x)      ((x >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f)
+#define DWC3_DEPCMD_STATUS_MASK         (0x0f << 12)
+#define DWC3_DEPCMD_STATUS(x)           ((x & DWC3_DEPCMD_STATUS_MASK) >> 12)
+#define DWC3_DEPCMD_HIPRI_FORCERM       (1 << 11)
+#define DWC3_DEPCMD_CMDACT              (1 << 10)
+#define DWC3_DEPCMD_CMDIOC              (1 << 8)
+
+#define DWC3_DEPCMD_DEPSTARTCFG         (0x09 << 0)
+#define DWC3_DEPCMD_ENDTRANSFER         (0x08 << 0)
+#define DWC3_DEPCMD_UPDATETRANSFER      (0x07 << 0)
+#define DWC3_DEPCMD_STARTTRANSFER       (0x06 << 0)
+#define DWC3_DEPCMD_CLEARSTALL          (0x05 << 0)
+#define DWC3_DEPCMD_SETSTALL            (0x04 << 0)
+#define DWC3_DEPCMD_GETSEQNUMBER        (0x03 << 0)
+#define DWC3_DEPCMD_SETTRANSFRESOURCE   (0x02 << 0)
+#define DWC3_DEPCMD_SETEPCONFIG         (0x01 << 0)
+
+/* The EP number goes 0..31 so ep0 is always out and ep1 is always in */
+#define DWC3_DALEPENA_EP(n)             (1 << n)
+
+#define DWC3_DEPCMD_TYPE_CONTROL        0
+#define DWC3_DEPCMD_TYPE_ISOC           1
+#define DWC3_DEPCMD_TYPE_BULK           2
+#define DWC3_DEPCMD_TYPE_INTR           3
+
+/* Structures */
+
+struct dwc3_trb_hw;
+
+/**
+ * struct dwc3_event_buffer - Software event buffer representation
+ * @list: a list of event buffers
+ * @buf: _THE_ buffer
+ * @length: size of this buffer
+ * @dma: dma_addr_t
+ * @dwc: pointer to DWC controller
+ */
+struct dwc3_event_buffer {
+        void                    *buf;
+        unsigned                length;
+        unsigned int            lpos;
+
+        dma_addr_t              dma;
+
+        struct dwc3             *dwc;
+};
+
+#define DWC3_EP_FLAG_STALLED    (1 << 0)
+#define DWC3_EP_FLAG_WEDGED     (1 << 1)
+
+#define DWC3_EP_DIRECTION_TX    true
+#define DWC3_EP_DIRECTION_RX    false
+
+#define DWC3_TRB_NUM            32
+#define DWC3_TRB_MASK           (DWC3_TRB_NUM - 1)
+
+/**
+ * struct dwc3_ep - device side endpoint representation
+ * @endpoint: usb endpoint
+ * @request_list: list of requests for this endpoint
+ * @req_queued: list of requests on this ep which have TRBs setup
+ * @trb_pool: array of transaction buffers
+ * @trb_pool_dma: dma address of @trb_pool
+ * @free_slot: next slot which is going to be used
+ * @busy_slot: first slot which is owned by HW
+ * @desc: usb_endpoint_descriptor pointer
+ * @dwc: pointer to DWC controller
+ * @flags: endpoint flags (wedged, stalled, ...)
+ * @current_trb: index of current used trb
+ * @number: endpoint number (1 - 15)
+ * @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK
+ * @res_trans_idx: Resource transfer index
+ * @interval: the intervall on which the ISOC transfer is started
+ * @name: a human readable name e.g. ep1out-bulk
+ * @direction: true for TX, false for RX
+ * @stream_capable: true when streams are enabled
+ */
+struct dwc3_ep {
+        struct usb_ep           endpoint;
+        struct list_head        request_list;
+        struct list_head        req_queued;
+
+        struct dwc3_trb_hw      *trb_pool;
+        dma_addr_t              trb_pool_dma;
+        u32                     free_slot;
+        u32                     busy_slot;
+        const struct usb_endpoint_descriptor *desc;
+        struct dwc3             *dwc;
+
+        unsigned                flags;
+#define DWC3_EP_ENABLED         (1 << 0)
+#define DWC3_EP_STALL           (1 << 1)
+#define DWC3_EP_WEDGE           (1 << 2)
+#define DWC3_EP_BUSY            (1 << 4)
+#define DWC3_EP_PENDING_REQUEST (1 << 5)
+
+        /* This last one is specific to EP0 */
+#define DWC3_EP0_DIR_IN         (1 << 31)
+
+        unsigned                current_trb;
+
+        u8                      number;
+        u8                      type;
+        u8                      res_trans_idx;
+        u32                     interval;
+
+        char                    name[20];
+
+        unsigned                direction:1;
+        unsigned                stream_capable:1;
+};
+
+enum dwc3_phy {
+        DWC3_PHY_UNKNOWN = 0,
+        DWC3_PHY_USB3,
+        DWC3_PHY_USB2,
+};
+
+enum dwc3_ep0_next {
+        DWC3_EP0_UNKNOWN = 0,
+        DWC3_EP0_COMPLETE,
+        DWC3_EP0_NRDY_SETUP,
+        DWC3_EP0_NRDY_DATA,
+        DWC3_EP0_NRDY_STATUS,
+};
+
+enum dwc3_ep0_state {
+        EP0_UNCONNECTED         = 0,
+        EP0_SETUP_PHASE,
+        EP0_DATA_PHASE,
+        EP0_STATUS_PHASE,
+};
+
+enum dwc3_link_state {
+        /* In SuperSpeed */
+        DWC3_LINK_STATE_U0              = 0x00, /* in HS, means ON */
+        DWC3_LINK_STATE_U1              = 0x01,
+        DWC3_LINK_STATE_U2              = 0x02, /* in HS, means SLEEP */
+        DWC3_LINK_STATE_U3              = 0x03, /* in HS, means SUSPEND */
+        DWC3_LINK_STATE_SS_DIS          = 0x04,
+        DWC3_LINK_STATE_RX_DET          = 0x05, /* in HS, means Early Suspend */
+        DWC3_LINK_STATE_SS_INACT        = 0x06,
+        DWC3_LINK_STATE_POLL            = 0x07,
+        DWC3_LINK_STATE_RECOV           = 0x08,
+        DWC3_LINK_STATE_HRESET          = 0x09,
+        DWC3_LINK_STATE_CMPLY           = 0x0a,
+        DWC3_LINK_STATE_LPBK            = 0x0b,
+        DWC3_LINK_STATE_MASK            = 0x0f,
+};
+
+enum dwc3_device_state {
+        DWC3_DEFAULT_STATE,
+        DWC3_ADDRESS_STATE,
+        DWC3_CONFIGURED_STATE,
+};
+
+/**
+ * struct dwc3_trb - transfer request block
+ * @bpl: lower 32bit of the buffer
+ * @bph: higher 32bit of the buffer
+ * @length: buffer size (up to 16mb - 1)
+ * @pcm1: packet count m1
+ * @trbsts: trb status
+ *      0 = ok
+ *      1 = missed isoc
+ *      2 = setup pending
+ * @hwo: hardware owner of descriptor
+ * @lst: last trb
+ * @chn: chain buffers
+ * @csp: continue on short packets (only supported on isoc eps)
+ * @trbctl: trb control
+ *      1 = normal
+ *      2 = control-setup
+ *      3 = control-status-2
+ *      4 = control-status-3
+ *      5 = control-data (first trb of data stage)
+ *      6 = isochronous-first (first trb of service interval)
+ *      7 = isochronous
+ *      8 = link trb
+ *      others = reserved
+ * @isp_imi: interrupt on short packet / interrupt on missed isoc
+ * @ioc: interrupt on complete
+ * @sid_sofn: Stream ID / SOF Number
+ */
+struct dwc3_trb {
+        u64             bplh;
+
+        union {
+                struct {
+                        u32             length:24;
+                        u32             pcm1:2;
+                        u32             reserved27_26:2;
+                        u32             trbsts:4;
+#define DWC3_TRB_STS_OKAY                       0
+#define DWC3_TRB_STS_MISSED_ISOC                1
+#define DWC3_TRB_STS_SETUP_PENDING              2
+                };
+                u32 len_pcm;
+        };
+
+        union {
+                struct {
+                        u32             hwo:1;
+                        u32             lst:1;
+                        u32             chn:1;
+                        u32             csp:1;
+                        u32             trbctl:6;
+                        u32             isp_imi:1;
+                        u32             ioc:1;
+                        u32             reserved13_12:2;
+                        u32             sid_sofn:16;
+                        u32             reserved31_30:2;
+                };
+                u32 control;
+        };
+} __packed;
+
+/**
+ * struct dwc3_trb_hw - transfer request block (hw format)
+ * @bpl: DW0-3
+ * @bph: DW4-7
+ * @size: DW8-B
+ * @trl: DWC-F
+ */
+struct dwc3_trb_hw {
+        __le32          bpl;
+        __le32          bph;
+        __le32          size;
+        __le32          ctrl;
+} __packed;
+
+static inline void dwc3_trb_to_hw(struct dwc3_trb *nat, struct dwc3_trb_hw *hw)
+{
+        hw->bpl = cpu_to_le32(lower_32_bits(nat->bplh));
+        hw->bph = cpu_to_le32(upper_32_bits(nat->bplh));
+        hw->size = cpu_to_le32p(&nat->len_pcm);
+        /* HWO is written last */
+        hw->ctrl = cpu_to_le32p(&nat->control);
+}
+
+static inline void dwc3_trb_to_nat(struct dwc3_trb_hw *hw, struct dwc3_trb *nat)
+{
+        u64 bplh;
+
+        bplh = le32_to_cpup(&hw->bpl);
+        bplh |= (u64) le32_to_cpup(&hw->bph) << 32;
+        nat->bplh = bplh;
+
+        nat->len_pcm = le32_to_cpup(&hw->size);
+        nat->control = le32_to_cpup(&hw->ctrl);
+}
+
+/**
+ * dwc3_hwparams - copy of HWPARAMS registers
+ * @hwparams0 - GHWPARAMS0
+ * @hwparams1 - GHWPARAMS1
+ * @hwparams2 - GHWPARAMS2
+ * @hwparams3 - GHWPARAMS3
+ * @hwparams4 - GHWPARAMS4
+ * @hwparams5 - GHWPARAMS5
+ * @hwparams6 - GHWPARAMS6
+ * @hwparams7 - GHWPARAMS7
+ * @hwparams8 - GHWPARAMS8
+ */
+struct dwc3_hwparams {
+        u32     hwparams0;
+        u32     hwparams1;
+        u32     hwparams2;
+        u32     hwparams3;
+        u32     hwparams4;
+        u32     hwparams5;
+        u32     hwparams6;
+        u32     hwparams7;
+        u32     hwparams8;
+};
+
+/**
+ * struct dwc3 - representation of our controller
+ * @ctrl_req: usb control request which is used for ep0
+ * @ep0_trb: trb which is used for the ctrl_req
+ * @ep0_bounce: bounce buffer for ep0
+ * @setup_buf: used while precessing STD USB requests
+ * @ctrl_req_addr: dma address of ctrl_req
+ * @ep0_trb: dma address of ep0_trb
+ * @ep0_usb_req: dummy req used while handling STD USB requests
+ * @setup_buf_addr: dma address of setup_buf
+ * @ep0_bounce_addr: dma address of ep0_bounce
+ * @lock: for synchronizing
+ * @dev: pointer to our struct device
+ * @event_buffer_list: a list of event buffers
+ * @gadget: device side representation of the peripheral controller
+ * @gadget_driver: pointer to the gadget driver
+ * @regs: base address for our registers
+ * @regs_size: address space size
+ * @irq: IRQ number
+ * @revision: revision register contents
+ * @is_selfpowered: true when we are selfpowered
+ * @three_stage_setup: set if we perform a three phase setup
+ * @ep0_status_pending: ep0 status response without a req is pending
+ * @ep0_bounced: true when we used bounce buffer
+ * @ep0_expect_in: true when we expect a DATA IN transfer
+ * @start_config_issued: true when StartConfig command has been issued
+ * @ep0_next_event: hold the next expected event
+ * @ep0state: state of endpoint zero
+ * @link_state: link state
+ * @speed: device speed (super, high, full, low)
+ * @mem: points to start of memory which is used for this struct.
+ * @hwparams: copy of hwparams registers
+ * @root: debugfs root folder pointer
+ */
+struct dwc3 {
+        struct usb_ctrlrequest  *ctrl_req;
+        struct dwc3_trb_hw      *ep0_trb;
+        void                    *ep0_bounce;
+        u8                      *setup_buf;
+        dma_addr_t              ctrl_req_addr;
+        dma_addr_t              ep0_trb_addr;
+        dma_addr_t              setup_buf_addr;
+        dma_addr_t              ep0_bounce_addr;
+        struct usb_request      ep0_usb_req;
+        /* device lock */
+        spinlock_t              lock;
+        struct device           *dev;
+
+        struct dwc3_event_buffer *ev_buffs[DWC3_EVENT_BUFFERS_NUM];
+        struct dwc3_ep          *eps[DWC3_ENDPOINTS_NUM];
+
+        struct usb_gadget       gadget;
+        struct usb_gadget_driver *gadget_driver;
+
+        void __iomem            *regs;
+        size_t                  regs_size;
+
+        int                     irq;
+
+        u32                     revision;
+
+#define DWC3_REVISION_173A      0x5533173a
+#define DWC3_REVISION_175A      0x5533175a
+#define DWC3_REVISION_180A      0x5533180a
+#define DWC3_REVISION_183A      0x5533183a
+#define DWC3_REVISION_185A      0x5533185a
+#define DWC3_REVISION_188A      0x5533188a
+#define DWC3_REVISION_190A      0x5533190a
+
+        unsigned                is_selfpowered:1;
+        unsigned                three_stage_setup:1;
+        unsigned                ep0_status_pending:1;
+        unsigned                ep0_bounced:1;
+        unsigned                ep0_expect_in:1;
+        unsigned                start_config_issued:1;
+
+        enum dwc3_ep0_next      ep0_next_event;
+        enum dwc3_ep0_state     ep0state;
+        enum dwc3_link_state    link_state;
+        enum dwc3_device_state  dev_state;
+
+        u8                      speed;
+        void                    *mem;
+
+        struct dwc3_hwparams    hwparams;
+        struct dentry           *root;
+};
+
+/* -------------------------------------------------------------------------- */
+
+#define DWC3_TRBSTS_OK                  0
+#define DWC3_TRBSTS_MISSED_ISOC         1
+#define DWC3_TRBSTS_SETUP_PENDING       2
+
+#define DWC3_TRBCTL_NORMAL              1
+#define DWC3_TRBCTL_CONTROL_SETUP       2
+#define DWC3_TRBCTL_CONTROL_STATUS2     3
+#define DWC3_TRBCTL_CONTROL_STATUS3     4
+#define DWC3_TRBCTL_CONTROL_DATA        5
+#define DWC3_TRBCTL_ISOCHRONOUS_FIRST   6
+#define DWC3_TRBCTL_ISOCHRONOUS         7
+#define DWC3_TRBCTL_LINK_TRB            8
+
+/* -------------------------------------------------------------------------- */
+
+struct dwc3_event_type {
+        u32     is_devspec:1;
+        u32     type:6;
+        u32     reserved8_31:25;
+} __packed;
+
+#define DWC3_DEPEVT_XFERCOMPLETE        0x01
+#define DWC3_DEPEVT_XFERINPROGRESS      0x02
+#define DWC3_DEPEVT_XFERNOTREADY        0x03
+#define DWC3_DEPEVT_RXTXFIFOEVT         0x04
+#define DWC3_DEPEVT_STREAMEVT           0x06
+#define DWC3_DEPEVT_EPCMDCMPLT          0x07
+
+/**
+ * struct dwc3_event_depvt - Device Endpoint Events
+ * @one_bit: indicates this is an endpoint event (not used)
+ * @endpoint_number: number of the endpoint
+ * @endpoint_event: The event we have:
+ *      0x00    - Reserved
+ *      0x01    - XferComplete
+ *      0x02    - XferInProgress
+ *      0x03    - XferNotReady
+ *      0x04    - RxTxFifoEvt (IN->Underrun, OUT->Overrun)
+ *      0x05    - Reserved
+ *      0x06    - StreamEvt
+ *      0x07    - EPCmdCmplt
+ * @reserved11_10: Reserved, don't use.
+ * @status: Indicates the status of the event. Refer to databook for
+ *      more information.
+ * @parameters: Parameters of the current event. Refer to databook for
+ *      more information.
+ */
+struct dwc3_event_depevt {
+        u32     one_bit:1;
+        u32     endpoint_number:5;
+        u32     endpoint_event:4;
+        u32     reserved11_10:2;
+        u32     status:4;
+#define DEPEVT_STATUS_BUSERR    (1 << 0)
+#define DEPEVT_STATUS_SHORT     (1 << 1)
+#define DEPEVT_STATUS_IOC       (1 << 2)
+#define DEPEVT_STATUS_LST       (1 << 3)
+
+/* Stream event only */
+#define DEPEVT_STREAMEVT_FOUND          1
+#define DEPEVT_STREAMEVT_NOTFOUND       2
+
+/* Control-only Status */
+#define DEPEVT_STATUS_CONTROL_SETUP     0
+#define DEPEVT_STATUS_CONTROL_DATA      1
+#define DEPEVT_STATUS_CONTROL_STATUS    2
+
+        u32     parameters:16;
+} __packed;
+
+/**
+ * struct dwc3_event_devt - Device Events
+ * @one_bit: indicates this is a non-endpoint event (not used)
+ * @device_event: indicates it's a device event. Should read as 0x00
+ * @type: indicates the type of device event.
+ *      0       - DisconnEvt
+ *      1       - USBRst
+ *      2       - ConnectDone
+ *      3       - ULStChng
+ *      4       - WkUpEvt
+ *      5       - Reserved
+ *      6       - EOPF
+ *      7       - SOF
+ *      8       - Reserved
+ *      9       - ErrticErr
+ *      10      - CmdCmplt
+ *      11      - EvntOverflow
+ *      12      - VndrDevTstRcved
+ * @reserved15_12: Reserved, not used
+ * @event_info: Information about this event
+ * @reserved31_24: Reserved, not used
+ */
+struct dwc3_event_devt {
+        u32     one_bit:1;
+        u32     device_event:7;
+        u32     type:4;
+        u32     reserved15_12:4;
+        u32     event_info:8;
+        u32     reserved31_24:8;
+} __packed;
+
+/**
+ * struct dwc3_event_gevt - Other Core Events
+ * @one_bit: indicates this is a non-endpoint event (not used)
+ * @device_event: indicates it's (0x03) Carkit or (0x04) I2C event.
+ * @phy_port_number: self-explanatory
+ * @reserved31_12: Reserved, not used.
+ */
+struct dwc3_event_gevt {
+        u32     one_bit:1;
+        u32     device_event:7;
+        u32     phy_port_number:4;
+        u32     reserved31_12:20;
+} __packed;
+
+/**
+ * union dwc3_event - representation of Event Buffer contents
+ * @raw: raw 32-bit event
+ * @type: the type of the event
+ * @depevt: Device Endpoint Event
+ * @devt: Device Event
+ * @gevt: Global Event
+ */
+union dwc3_event {
+        u32                             raw;
+        struct dwc3_event_type          type;
+        struct dwc3_event_depevt        depevt;
+        struct dwc3_event_devt          devt;
+        struct dwc3_event_gevt          gevt;
+};
+
+/*
+ * DWC3 Features to be used as Driver Data
+ */
+
+#define DWC3_HAS_PERIPHERAL             BIT(0)
+#define DWC3_HAS_XHCI                   BIT(1)
+#define DWC3_HAS_OTG                    BIT(3)
+
+#endif /* __DRIVERS_USB_DWC3_CORE_H */
diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h
new file mode 100644
index 000000000000..5894ee8222af
--- /dev/null
+++ b/drivers/usb/dwc3/debug.h
@@ -0,0 +1,50 @@
+/**
+ * debug.h - DesignWare USB3 DRD Controller Debug Header
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@ti.com>,
+ *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "core.h"
+
+#ifdef CONFIG_DEBUG_FS
+extern int dwc3_debugfs_init(struct dwc3 *);
+extern void dwc3_debugfs_exit(struct dwc3 *);
+#else
+static inline int dwc3_debugfs_init(struct dwc3 *d)
+{  return 0;  }
+static inline void dwc3_debugfs_exit(struct dwc3 *d)
+{  }
+#endif
+
diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c
new file mode 100644
index 000000000000..da1ad77d8d51
--- /dev/null
+++ b/drivers/usb/dwc3/debugfs.c
@@ -0,0 +1,441 @@
+/**
+ * debugfs.c - DesignWare USB3 DRD Controller DebugFS file
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@ti.com>,
+ *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/ptrace.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/delay.h>
+
+#include <asm/uaccess.h>
+
+#include "core.h"
+#include "gadget.h"
+#include "io.h"
+
+struct dwc3_register {
+        const char      *name;
+        u32             offset;
+};
+
+#define dump_register(nm)                               \
+{                                                       \
+        .name   = __stringify(nm),                      \
+        .offset = DWC3_ ##nm,                           \
+}
+
+static const struct dwc3_register dwc3_regs[] = {
+        dump_register(GSBUSCFG0),
+        dump_register(GSBUSCFG1),
+        dump_register(GTXTHRCFG),
+        dump_register(GRXTHRCFG),
+        dump_register(GCTL),
+        dump_register(GEVTEN),
+        dump_register(GSTS),
+        dump_register(GSNPSID),
+        dump_register(GGPIO),
+        dump_register(GUID),
+        dump_register(GUCTL),
+        dump_register(GBUSERRADDR0),
+        dump_register(GBUSERRADDR1),
+        dump_register(GPRTBIMAP0),
+        dump_register(GPRTBIMAP1),
+        dump_register(GHWPARAMS0),
+        dump_register(GHWPARAMS1),
+        dump_register(GHWPARAMS2),
+        dump_register(GHWPARAMS3),
+        dump_register(GHWPARAMS4),
+        dump_register(GHWPARAMS5),
+        dump_register(GHWPARAMS6),
+        dump_register(GHWPARAMS7),
+        dump_register(GDBGFIFOSPACE),
+        dump_register(GDBGLTSSM),
+        dump_register(GPRTBIMAP_HS0),
+        dump_register(GPRTBIMAP_HS1),
+        dump_register(GPRTBIMAP_FS0),
+        dump_register(GPRTBIMAP_FS1),
+
+        dump_register(GUSB2PHYCFG(0)),
+        dump_register(GUSB2PHYCFG(1)),
+        dump_register(GUSB2PHYCFG(2)),
+        dump_register(GUSB2PHYCFG(3)),
+        dump_register(GUSB2PHYCFG(4)),
+        dump_register(GUSB2PHYCFG(5)),
+        dump_register(GUSB2PHYCFG(6)),
+        dump_register(GUSB2PHYCFG(7)),
+        dump_register(GUSB2PHYCFG(8)),
+        dump_register(GUSB2PHYCFG(9)),
+        dump_register(GUSB2PHYCFG(10)),
+        dump_register(GUSB2PHYCFG(11)),
+        dump_register(GUSB2PHYCFG(12)),
+        dump_register(GUSB2PHYCFG(13)),
+        dump_register(GUSB2PHYCFG(14)),
+        dump_register(GUSB2PHYCFG(15)),
+
+        dump_register(GUSB2I2CCTL(0)),
+        dump_register(GUSB2I2CCTL(1)),
+        dump_register(GUSB2I2CCTL(2)),
+        dump_register(GUSB2I2CCTL(3)),
+        dump_register(GUSB2I2CCTL(4)),
+        dump_register(GUSB2I2CCTL(5)),
+        dump_register(GUSB2I2CCTL(6)),
+        dump_register(GUSB2I2CCTL(7)),
+        dump_register(GUSB2I2CCTL(8)),
+        dump_register(GUSB2I2CCTL(9)),
+        dump_register(GUSB2I2CCTL(10)),
+        dump_register(GUSB2I2CCTL(11)),
+        dump_register(GUSB2I2CCTL(12)),
+        dump_register(GUSB2I2CCTL(13)),
+        dump_register(GUSB2I2CCTL(14)),
+        dump_register(GUSB2I2CCTL(15)),
+
+        dump_register(GUSB2PHYACC(0)),
+        dump_register(GUSB2PHYACC(1)),
+        dump_register(GUSB2PHYACC(2)),
+        dump_register(GUSB2PHYACC(3)),
+        dump_register(GUSB2PHYACC(4)),
+        dump_register(GUSB2PHYACC(5)),
+        dump_register(GUSB2PHYACC(6)),
+        dump_register(GUSB2PHYACC(7)),
+        dump_register(GUSB2PHYACC(8)),
+        dump_register(GUSB2PHYACC(9)),
+        dump_register(GUSB2PHYACC(10)),
+        dump_register(GUSB2PHYACC(11)),
+        dump_register(GUSB2PHYACC(12)),
+        dump_register(GUSB2PHYACC(13)),
+        dump_register(GUSB2PHYACC(14)),
+        dump_register(GUSB2PHYACC(15)),
+
+        dump_register(GUSB3PIPECTL(0)),
+        dump_register(GUSB3PIPECTL(1)),
+        dump_register(GUSB3PIPECTL(2)),
+        dump_register(GUSB3PIPECTL(3)),
+        dump_register(GUSB3PIPECTL(4)),
+        dump_register(GUSB3PIPECTL(5)),
+        dump_register(GUSB3PIPECTL(6)),
+        dump_register(GUSB3PIPECTL(7)),
+        dump_register(GUSB3PIPECTL(8)),
+        dump_register(GUSB3PIPECTL(9)),
+        dump_register(GUSB3PIPECTL(10)),
+        dump_register(GUSB3PIPECTL(11)),
+        dump_register(GUSB3PIPECTL(12)),
+        dump_register(GUSB3PIPECTL(13)),
+        dump_register(GUSB3PIPECTL(14)),
+        dump_register(GUSB3PIPECTL(15)),
+
+        dump_register(GTXFIFOSIZ(0)),
+        dump_register(GTXFIFOSIZ(1)),
+        dump_register(GTXFIFOSIZ(2)),
+        dump_register(GTXFIFOSIZ(3)),
+        dump_register(GTXFIFOSIZ(4)),
+        dump_register(GTXFIFOSIZ(5)),
+        dump_register(GTXFIFOSIZ(6)),
+        dump_register(GTXFIFOSIZ(7)),
+        dump_register(GTXFIFOSIZ(8)),
+        dump_register(GTXFIFOSIZ(9)),
+        dump_register(GTXFIFOSIZ(10)),
+        dump_register(GTXFIFOSIZ(11)),
+        dump_register(GTXFIFOSIZ(12)),
+        dump_register(GTXFIFOSIZ(13)),
+        dump_register(GTXFIFOSIZ(14)),
+        dump_register(GTXFIFOSIZ(15)),
+        dump_register(GTXFIFOSIZ(16)),
+        dump_register(GTXFIFOSIZ(17)),
+        dump_register(GTXFIFOSIZ(18)),
+        dump_register(GTXFIFOSIZ(19)),
+        dump_register(GTXFIFOSIZ(20)),
+        dump_register(GTXFIFOSIZ(21)),
+        dump_register(GTXFIFOSIZ(22)),
+        dump_register(GTXFIFOSIZ(23)),
+        dump_register(GTXFIFOSIZ(24)),
+        dump_register(GTXFIFOSIZ(25)),
+        dump_register(GTXFIFOSIZ(26)),
+        dump_register(GTXFIFOSIZ(27)),
+        dump_register(GTXFIFOSIZ(28)),
+        dump_register(GTXFIFOSIZ(29)),
+        dump_register(GTXFIFOSIZ(30)),
+        dump_register(GTXFIFOSIZ(31)),
+
+        dump_register(GRXFIFOSIZ(0)),
+        dump_register(GRXFIFOSIZ(1)),
+        dump_register(GRXFIFOSIZ(2)),
+        dump_register(GRXFIFOSIZ(3)),
+        dump_register(GRXFIFOSIZ(4)),
+        dump_register(GRXFIFOSIZ(5)),
+        dump_register(GRXFIFOSIZ(6)),
+        dump_register(GRXFIFOSIZ(7)),
+        dump_register(GRXFIFOSIZ(8)),
+        dump_register(GRXFIFOSIZ(9)),
+        dump_register(GRXFIFOSIZ(10)),
+        dump_register(GRXFIFOSIZ(11)),
+        dump_register(GRXFIFOSIZ(12)),
+        dump_register(GRXFIFOSIZ(13)),
+        dump_register(GRXFIFOSIZ(14)),
+        dump_register(GRXFIFOSIZ(15)),
+        dump_register(GRXFIFOSIZ(16)),
+        dump_register(GRXFIFOSIZ(17)),
+        dump_register(GRXFIFOSIZ(18)),
+        dump_register(GRXFIFOSIZ(19)),
+        dump_register(GRXFIFOSIZ(20)),
+        dump_register(GRXFIFOSIZ(21)),
+        dump_register(GRXFIFOSIZ(22)),
+        dump_register(GRXFIFOSIZ(23)),
+        dump_register(GRXFIFOSIZ(24)),
+        dump_register(GRXFIFOSIZ(25)),
+        dump_register(GRXFIFOSIZ(26)),
+        dump_register(GRXFIFOSIZ(27)),
+        dump_register(GRXFIFOSIZ(28)),
+        dump_register(GRXFIFOSIZ(29)),
+        dump_register(GRXFIFOSIZ(30)),
+        dump_register(GRXFIFOSIZ(31)),
+
+        dump_register(GEVNTADRLO(0)),
+        dump_register(GEVNTADRHI(0)),
+        dump_register(GEVNTSIZ(0)),
+        dump_register(GEVNTCOUNT(0)),
+
+        dump_register(GHWPARAMS8),
+        dump_register(DCFG),
+        dump_register(DCTL),
+        dump_register(DEVTEN),
+        dump_register(DSTS),
+        dump_register(DGCMDPAR),
+        dump_register(DGCMD),
+        dump_register(DALEPENA),
+
+        dump_register(DEPCMDPAR2(0)),
+        dump_register(DEPCMDPAR2(1)),
+        dump_register(DEPCMDPAR2(2)),
+        dump_register(DEPCMDPAR2(3)),
+        dump_register(DEPCMDPAR2(4)),
+        dump_register(DEPCMDPAR2(5)),
+        dump_register(DEPCMDPAR2(6)),
+        dump_register(DEPCMDPAR2(7)),
+        dump_register(DEPCMDPAR2(8)),
+        dump_register(DEPCMDPAR2(9)),
+        dump_register(DEPCMDPAR2(10)),
+        dump_register(DEPCMDPAR2(11)),
+        dump_register(DEPCMDPAR2(12)),
+        dump_register(DEPCMDPAR2(13)),
+        dump_register(DEPCMDPAR2(14)),
+        dump_register(DEPCMDPAR2(15)),
+        dump_register(DEPCMDPAR2(16)),
+        dump_register(DEPCMDPAR2(17)),
+        dump_register(DEPCMDPAR2(18)),
+        dump_register(DEPCMDPAR2(19)),
+        dump_register(DEPCMDPAR2(20)),
+        dump_register(DEPCMDPAR2(21)),
+        dump_register(DEPCMDPAR2(22)),
+        dump_register(DEPCMDPAR2(23)),
+        dump_register(DEPCMDPAR2(24)),
+        dump_register(DEPCMDPAR2(25)),
+        dump_register(DEPCMDPAR2(26)),
+        dump_register(DEPCMDPAR2(27)),
+        dump_register(DEPCMDPAR2(28)),
+        dump_register(DEPCMDPAR2(29)),
+        dump_register(DEPCMDPAR2(30)),
+        dump_register(DEPCMDPAR2(31)),
+
+        dump_register(DEPCMDPAR1(0)),
+        dump_register(DEPCMDPAR1(1)),
+        dump_register(DEPCMDPAR1(2)),
+        dump_register(DEPCMDPAR1(3)),
+        dump_register(DEPCMDPAR1(4)),
+        dump_register(DEPCMDPAR1(5)),
+        dump_register(DEPCMDPAR1(6)),
+        dump_register(DEPCMDPAR1(7)),
+        dump_register(DEPCMDPAR1(8)),
+        dump_register(DEPCMDPAR1(9)),
+        dump_register(DEPCMDPAR1(10)),
+        dump_register(DEPCMDPAR1(11)),
+        dump_register(DEPCMDPAR1(12)),
+        dump_register(DEPCMDPAR1(13)),
+        dump_register(DEPCMDPAR1(14)),
+        dump_register(DEPCMDPAR1(15)),
+        dump_register(DEPCMDPAR1(16)),
+        dump_register(DEPCMDPAR1(17)),
+        dump_register(DEPCMDPAR1(18)),
+        dump_register(DEPCMDPAR1(19)),
+        dump_register(DEPCMDPAR1(20)),
+        dump_register(DEPCMDPAR1(21)),
+        dump_register(DEPCMDPAR1(22)),
+        dump_register(DEPCMDPAR1(23)),
+        dump_register(DEPCMDPAR1(24)),
+        dump_register(DEPCMDPAR1(25)),
+        dump_register(DEPCMDPAR1(26)),
+        dump_register(DEPCMDPAR1(27)),
+        dump_register(DEPCMDPAR1(28)),
+        dump_register(DEPCMDPAR1(29)),
+        dump_register(DEPCMDPAR1(30)),
+        dump_register(DEPCMDPAR1(31)),
+
+        dump_register(DEPCMDPAR0(0)),
+        dump_register(DEPCMDPAR0(1)),
+        dump_register(DEPCMDPAR0(2)),
+        dump_register(DEPCMDPAR0(3)),
+        dump_register(DEPCMDPAR0(4)),
+        dump_register(DEPCMDPAR0(5)),
+        dump_register(DEPCMDPAR0(6)),
+        dump_register(DEPCMDPAR0(7)),
+        dump_register(DEPCMDPAR0(8)),
+        dump_register(DEPCMDPAR0(9)),
+        dump_register(DEPCMDPAR0(10)),
+        dump_register(DEPCMDPAR0(11)),
+        dump_register(DEPCMDPAR0(12)),
+        dump_register(DEPCMDPAR0(13)),
+        dump_register(DEPCMDPAR0(14)),
+        dump_register(DEPCMDPAR0(15)),
+        dump_register(DEPCMDPAR0(16)),
+        dump_register(DEPCMDPAR0(17)),
+        dump_register(DEPCMDPAR0(18)),
+        dump_register(DEPCMDPAR0(19)),
+        dump_register(DEPCMDPAR0(20)),
+        dump_register(DEPCMDPAR0(21)),
+        dump_register(DEPCMDPAR0(22)),
+        dump_register(DEPCMDPAR0(23)),
+        dump_register(DEPCMDPAR0(24)),
+        dump_register(DEPCMDPAR0(25)),
+        dump_register(DEPCMDPAR0(26)),
+        dump_register(DEPCMDPAR0(27)),
+        dump_register(DEPCMDPAR0(28)),
+        dump_register(DEPCMDPAR0(29)),
+        dump_register(DEPCMDPAR0(30)),
+        dump_register(DEPCMDPAR0(31)),
+
+        dump_register(DEPCMD(0)),
+        dump_register(DEPCMD(1)),
+        dump_register(DEPCMD(2)),
+        dump_register(DEPCMD(3)),
+        dump_register(DEPCMD(4)),
+        dump_register(DEPCMD(5)),
+        dump_register(DEPCMD(6)),
+        dump_register(DEPCMD(7)),
+        dump_register(DEPCMD(8)),
+        dump_register(DEPCMD(9)),
+        dump_register(DEPCMD(10)),
+        dump_register(DEPCMD(11)),
+        dump_register(DEPCMD(12)),
+        dump_register(DEPCMD(13)),
+        dump_register(DEPCMD(14)),
+        dump_register(DEPCMD(15)),
+        dump_register(DEPCMD(16)),
+        dump_register(DEPCMD(17)),
+        dump_register(DEPCMD(18)),
+        dump_register(DEPCMD(19)),
+        dump_register(DEPCMD(20)),
+        dump_register(DEPCMD(21)),
+        dump_register(DEPCMD(22)),
+        dump_register(DEPCMD(23)),
+        dump_register(DEPCMD(24)),
+        dump_register(DEPCMD(25)),
+        dump_register(DEPCMD(26)),
+        dump_register(DEPCMD(27)),
+        dump_register(DEPCMD(28)),
+        dump_register(DEPCMD(29)),
+        dump_register(DEPCMD(30)),
+        dump_register(DEPCMD(31)),
+
+        dump_register(OCFG),
+        dump_register(OCTL),
+        dump_register(OEVTEN),
+        dump_register(OSTS),
+};
+
+static int dwc3_regdump_show(struct seq_file *s, void *unused)
+{
+        struct dwc3             *dwc = s->private;
+        int                     i;
+
+        seq_printf(s, "DesignWare USB3 Core Register Dump\n");
+
+        for (i = 0; i < ARRAY_SIZE(dwc3_regs); i++) {
+                seq_printf(s, "%-20s :    %08x\n", dwc3_regs[i].name,
+                                dwc3_readl(dwc->regs, dwc3_regs[i].offset));
+        }
+
+        return 0;
+}
+
+static int dwc3_regdump_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, dwc3_regdump_show, inode->i_private);
+}
+
+static const struct file_operations dwc3_regdump_fops = {
+        .open                   = dwc3_regdump_open,
+        .read                   = seq_read,
+        .release                = single_release,
+};
+
+int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
+{
+        struct dentry           *root;
+        struct dentry           *file;
+        int                     ret;
+
+        root = debugfs_create_dir(dev_name(dwc->dev), NULL);
+        if (IS_ERR(root)){
+                ret = PTR_ERR(root);
+                goto err0;
+        }
+
+        dwc->root = root;
+
+        file = debugfs_create_file("regdump", S_IRUGO, root, dwc,
+                        &dwc3_regdump_fops);
+        if (IS_ERR(file)) {
+                ret = PTR_ERR(file);
+                goto err1;
+        }
+        return 0;
+
+err1:
+        debugfs_remove_recursive(root);
+
+err0:
+        return ret;
+}
+
+void __devexit dwc3_debugfs_exit(struct dwc3 *dwc)
+{
+        debugfs_remove_recursive(dwc->root);
+        dwc->root = NULL;
+}
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
new file mode 100644
index 000000000000..062552b5fc8a
--- /dev/null
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -0,0 +1,401 @@
+/**
+ * dwc3-omap.c - OMAP Specific Glue layer
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@ti.com>,
+ *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/dwc3-omap.h>
+#include <linux/dma-mapping.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/module.h>
+
+#include "io.h"
+
+/*
+ * All these registers belong to OMAP's Wrapper around the
+ * DesignWare USB3 Core.
+ */
+
+#define USBOTGSS_REVISION                       0x0000
+#define USBOTGSS_SYSCONFIG                      0x0010
+#define USBOTGSS_IRQ_EOI                        0x0020
+#define USBOTGSS_IRQSTATUS_RAW_0                0x0024
+#define USBOTGSS_IRQSTATUS_0                    0x0028
+#define USBOTGSS_IRQENABLE_SET_0                0x002c
+#define USBOTGSS_IRQENABLE_CLR_0                0x0030
+#define USBOTGSS_IRQSTATUS_RAW_1                0x0034
+#define USBOTGSS_IRQSTATUS_1                    0x0038
+#define USBOTGSS_IRQENABLE_SET_1                0x003c
+#define USBOTGSS_IRQENABLE_CLR_1                0x0040
+#define USBOTGSS_UTMI_OTG_CTRL                  0x0080
+#define USBOTGSS_UTMI_OTG_STATUS                0x0084
+#define USBOTGSS_MMRAM_OFFSET                   0x0100
+#define USBOTGSS_FLADJ                          0x0104
+#define USBOTGSS_DEBUG_CFG                      0x0108
+#define USBOTGSS_DEBUG_DATA                     0x010c
+
+/* SYSCONFIG REGISTER */
+#define USBOTGSS_SYSCONFIG_DMADISABLE           (1 << 16)
+#define USBOTGSS_SYSCONFIG_STANDBYMODE(x)       ((x) << 4)
+
+#define USBOTGSS_STANDBYMODE_FORCE_STANDBY      0
+#define USBOTGSS_STANDBYMODE_NO_STANDBY         1
+#define USBOTGSS_STANDBYMODE_SMART_STANDBY      2
+#define USBOTGSS_STANDBYMODE_SMART_WAKEUP       3
+
+#define USBOTGSS_STANDBYMODE_MASK               (0x03 << 4)
+
+#define USBOTGSS_SYSCONFIG_IDLEMODE(x)          ((x) << 2)
+
+#define USBOTGSS_IDLEMODE_FORCE_IDLE            0
+#define USBOTGSS_IDLEMODE_NO_IDLE               1
+#define USBOTGSS_IDLEMODE_SMART_IDLE            2
+#define USBOTGSS_IDLEMODE_SMART_WAKEUP          3
+
+#define USBOTGSS_IDLEMODE_MASK                  (0x03 << 2)
+
+/* IRQ_EOI REGISTER */
+#define USBOTGSS_IRQ_EOI_LINE_NUMBER            (1 << 0)
+
+/* IRQS0 BITS */
+#define USBOTGSS_IRQO_COREIRQ_ST                (1 << 0)
+
+/* IRQ1 BITS */
+#define USBOTGSS_IRQ1_DMADISABLECLR             (1 << 17)
+#define USBOTGSS_IRQ1_OEVT                      (1 << 16)
+#define USBOTGSS_IRQ1_DRVVBUS_RISE              (1 << 13)
+#define USBOTGSS_IRQ1_CHRGVBUS_RISE             (1 << 12)
+#define USBOTGSS_IRQ1_DISCHRGVBUS_RISE          (1 << 11)
+#define USBOTGSS_IRQ1_IDPULLUP_RISE             (1 << 8)
+#define USBOTGSS_IRQ1_DRVVBUS_FALL              (1 << 5)
+#define USBOTGSS_IRQ1_CHRGVBUS_FALL             (1 << 4)
+#define USBOTGSS_IRQ1_DISCHRGVBUS_FALL          (1 << 3)
+#define USBOTGSS_IRQ1_IDPULLUP_FALL             (1 << 0)
+
+/* UTMI_OTG_CTRL REGISTER */
+#define USBOTGSS_UTMI_OTG_CTRL_DRVVBUS          (1 << 5)
+#define USBOTGSS_UTMI_OTG_CTRL_CHRGVBUS         (1 << 4)
+#define USBOTGSS_UTMI_OTG_CTRL_DISCHRGVBUS      (1 << 3)
+#define USBOTGSS_UTMI_OTG_CTRL_IDPULLUP         (1 << 0)
+
+/* UTMI_OTG_STATUS REGISTER */
+#define USBOTGSS_UTMI_OTG_STATUS_SW_MODE        (1 << 31)
+#define USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT   (1 << 9)
+#define USBOTGSS_UTMI_OTG_STATUS_TXBITSTUFFENABLE (1 << 8)
+#define USBOTGSS_UTMI_OTG_STATUS_IDDIG          (1 << 4)
+#define USBOTGSS_UTMI_OTG_STATUS_SESSEND        (1 << 3)
+#define USBOTGSS_UTMI_OTG_STATUS_SESSVALID      (1 << 2)
+#define USBOTGSS_UTMI_OTG_STATUS_VBUSVALID      (1 << 1)
+
+struct dwc3_omap {
+        /* device lock */
+        spinlock_t              lock;
+
+        struct platform_device  *dwc3;
+        struct device           *dev;
+
+        int                     irq;
+        void __iomem            *base;
+
+        void                    *context;
+        u32                     resource_size;
+
+        u32                     dma_status:1;
+};
+
+static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)
+{
+        struct dwc3_omap        *omap = _omap;
+        u32                     reg;
+
+        spin_lock(&omap->lock);
+
+        reg = dwc3_readl(omap->base, USBOTGSS_IRQSTATUS_1);
+
+        if (reg & USBOTGSS_IRQ1_DMADISABLECLR) {
+                dev_dbg(omap->dev, "DMA Disable was Cleared\n");
+                omap->dma_status = false;
+        }
+
+        if (reg & USBOTGSS_IRQ1_OEVT)
+                dev_dbg(omap->dev, "OTG Event\n");
+
+        if (reg & USBOTGSS_IRQ1_DRVVBUS_RISE)
+                dev_dbg(omap->dev, "DRVVBUS Rise\n");
+
+        if (reg & USBOTGSS_IRQ1_CHRGVBUS_RISE)
+                dev_dbg(omap->dev, "CHRGVBUS Rise\n");
+
+        if (reg & USBOTGSS_IRQ1_DISCHRGVBUS_RISE)
+                dev_dbg(omap->dev, "DISCHRGVBUS Rise\n");
+
+        if (reg & USBOTGSS_IRQ1_IDPULLUP_RISE)
+                dev_dbg(omap->dev, "IDPULLUP Rise\n");
+
+        if (reg & USBOTGSS_IRQ1_DRVVBUS_FALL)
+                dev_dbg(omap->dev, "DRVVBUS Fall\n");
+
+        if (reg & USBOTGSS_IRQ1_CHRGVBUS_FALL)
+                dev_dbg(omap->dev, "CHRGVBUS Fall\n");
+
+        if (reg & USBOTGSS_IRQ1_DISCHRGVBUS_FALL)
+                dev_dbg(omap->dev, "DISCHRGVBUS Fall\n");
+
+        if (reg & USBOTGSS_IRQ1_IDPULLUP_FALL)
+                dev_dbg(omap->dev, "IDPULLUP Fall\n");
+
+        dwc3_writel(omap->base, USBOTGSS_IRQSTATUS_1, reg);
+
+        reg = dwc3_readl(omap->base, USBOTGSS_IRQSTATUS_0);
+        dwc3_writel(omap->base, USBOTGSS_IRQSTATUS_0, reg);
+
+        spin_unlock(&omap->lock);
+
+        return IRQ_HANDLED;
+}
+
+static int __devinit dwc3_omap_probe(struct platform_device *pdev)
+{
+        struct dwc3_omap_data   *pdata = pdev->dev.platform_data;
+        struct platform_device  *dwc3;
+        struct dwc3_omap        *omap;
+        struct resource         *res;
+
+        int                     ret = -ENOMEM;
+        int                     irq;
+
+        u32                     reg;
+
+        void __iomem            *base;
+        void                    *context;
+
+        omap = kzalloc(sizeof(*omap), GFP_KERNEL);
+        if (!omap) {
+                dev_err(&pdev->dev, "not enough memory\n");
+                goto err0;
+        }
+
+        platform_set_drvdata(pdev, omap);
+
+        irq = platform_get_irq(pdev, 1);
+        if (irq < 0) {
+                dev_err(&pdev->dev, "missing IRQ resource\n");
+                ret = -EINVAL;
+                goto err1;
+        }
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+        if (!res) {
+                dev_err(&pdev->dev, "missing memory base resource\n");
+                ret = -EINVAL;
+                goto err1;
+        }
+
+        base = ioremap_nocache(res->start, resource_size(res));
+        if (!base) {
+                dev_err(&pdev->dev, "ioremap failed\n");
+                goto err1;
+        }
+
+        dwc3 = platform_device_alloc("dwc3-omap", -1);
+        if (!dwc3) {
+                dev_err(&pdev->dev, "couldn't allocate dwc3 device\n");
+                goto err2;
+        }
+
+        context = kzalloc(resource_size(res), GFP_KERNEL);
+        if (!context) {
+                dev_err(&pdev->dev, "couldn't allocate dwc3 context memory\n");
+                goto err3;
+        }
+
+        spin_lock_init(&omap->lock);
+        dma_set_coherent_mask(&dwc3->dev, pdev->dev.coherent_dma_mask);
+
+        dwc3->dev.parent = &pdev->dev;
+        dwc3->dev.dma_mask = pdev->dev.dma_mask;
+        dwc3->dev.dma_parms = pdev->dev.dma_parms;
+        omap->resource_size = resource_size(res);
+        omap->context   = context;
+        omap->dev       = &pdev->dev;
+        omap->irq       = irq;
+        omap->base      = base;
+        omap->dwc3      = dwc3;
+
+        reg = dwc3_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS);
+
+        if (!pdata) {
+                dev_dbg(&pdev->dev, "missing platform data\n");
+        } else {
+                switch (pdata->utmi_mode) {
+                case DWC3_OMAP_UTMI_MODE_SW:
+                        reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
+                        break;
+                case DWC3_OMAP_UTMI_MODE_HW:
+                        reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
+                        break;
+                default:
+                        dev_dbg(&pdev->dev, "UNKNOWN utmi mode %d\n",
+                                        pdata->utmi_mode);
+                }
+        }
+
+        dwc3_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, reg);
+
+        /* check the DMA Status */
+        reg = dwc3_readl(omap->base, USBOTGSS_SYSCONFIG);
+        omap->dma_status = !!(reg & USBOTGSS_SYSCONFIG_DMADISABLE);
+
+        /* Set No-Idle and No-Standby */
+        reg &= ~(USBOTGSS_STANDBYMODE_MASK
+                        | USBOTGSS_IDLEMODE_MASK);
+
+        reg |= (USBOTGSS_SYSCONFIG_STANDBYMODE(USBOTGSS_STANDBYMODE_NO_STANDBY)
+                | USBOTGSS_SYSCONFIG_IDLEMODE(USBOTGSS_IDLEMODE_NO_IDLE));
+
+        dwc3_writel(omap->base, USBOTGSS_SYSCONFIG, reg);
+
+        ret = request_irq(omap->irq, dwc3_omap_interrupt, 0,
+                        "dwc3-omap", omap);
+        if (ret) {
+                dev_err(&pdev->dev, "failed to request IRQ #%d --> %d\n",
+                                omap->irq, ret);
+                goto err4;
+        }
+
+        /* enable all IRQs */
+        reg = USBOTGSS_IRQO_COREIRQ_ST;
+        dwc3_writel(omap->base, USBOTGSS_IRQENABLE_SET_0, reg);
+
+        reg = (USBOTGSS_IRQ1_OEVT |
+                        USBOTGSS_IRQ1_DRVVBUS_RISE |
+                        USBOTGSS_IRQ1_CHRGVBUS_RISE |
+                        USBOTGSS_IRQ1_DISCHRGVBUS_RISE |
+                        USBOTGSS_IRQ1_IDPULLUP_RISE |
+                        USBOTGSS_IRQ1_DRVVBUS_FALL |
+                        USBOTGSS_IRQ1_CHRGVBUS_FALL |
+                        USBOTGSS_IRQ1_DISCHRGVBUS_FALL |
+                        USBOTGSS_IRQ1_IDPULLUP_FALL);
+
+        dwc3_writel(omap->base, USBOTGSS_IRQENABLE_SET_1, reg);
+
+        ret = platform_device_add_resources(dwc3, pdev->resource,
+                        pdev->num_resources);
+        if (ret) {
+                dev_err(&pdev->dev, "couldn't add resources to dwc3 device\n");
+                goto err5;
+        }
+
+        ret = platform_device_add(dwc3);
+        if (ret) {
+                dev_err(&pdev->dev, "failed to register dwc3 device\n");
+                goto err5;
+        }
+
+        return 0;
+
+err5:
+        free_irq(omap->irq, omap);
+
+err4:
+        kfree(omap->context);
+
+err3:
+        platform_device_put(dwc3);
+
+err2:
+        iounmap(base);
+
+err1:
+        kfree(omap);
+
+err0:
+        return ret;
+}
+
+static int __devexit dwc3_omap_remove(struct platform_device *pdev)
+{
+        struct dwc3_omap        *omap = platform_get_drvdata(pdev);
+
+        platform_device_unregister(omap->dwc3);
+
+        free_irq(omap->irq, omap);
+        iounmap(omap->base);
+
+        kfree(omap->context);
+        kfree(omap);
+
+        return 0;
+}
+
+static const struct of_device_id of_dwc3_matach[] = {
+        {
+                "ti,dwc3",
+        },
+        { },
+};
+MODULE_DEVICE_TABLE(of, of_dwc3_matach);
+
+static struct platform_driver dwc3_omap_driver = {
+        .probe          = dwc3_omap_probe,
+        .remove         = __devexit_p(dwc3_omap_remove),
+        .driver         = {
+                .name   = "omap-dwc3",
+                .of_match_table = of_dwc3_matach,
+        },
+};
+
+MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("DesignWare USB3 OMAP Glue Layer");
+
+static int __devinit dwc3_omap_init(void)
+{
+        return platform_driver_register(&dwc3_omap_driver);
+}
+module_init(dwc3_omap_init);
+
+static void __exit dwc3_omap_exit(void)
+{
+        platform_driver_unregister(&dwc3_omap_driver);
+}
+module_exit(dwc3_omap_exit);
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
new file mode 100644
index 000000000000..f77c00042685
--- /dev/null
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -0,0 +1,219 @@
+/**
+ * dwc3-pci.c - PCI Specific glue layer
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@ti.com>,
+ *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+
+/* FIXME define these in <linux/pci_ids.h> */
+#define PCI_VENDOR_ID_SYNOPSYS          0x16c3
+#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
+
+#define DWC3_PCI_DEVS_POSSIBLE  32
+
+struct dwc3_pci {
+        struct device           *dev;
+        struct platform_device  *dwc3;
+};
+
+static DECLARE_BITMAP(dwc3_pci_devs, DWC3_PCI_DEVS_POSSIBLE);
+
+static int dwc3_pci_get_device_id(struct dwc3_pci *glue)
+{
+        int             id;
+
+again:
+        id = find_first_zero_bit(dwc3_pci_devs, DWC3_PCI_DEVS_POSSIBLE);
+        if (id < DWC3_PCI_DEVS_POSSIBLE) {
+                int old;
+
+                old = test_and_set_bit(id, dwc3_pci_devs);
+                if (old)
+                        goto again;
+        } else {
+                dev_err(glue->dev, "no space for new device\n");
+                id = -ENOMEM;
+        }
+
+        return 0;
+}
+
+static void dwc3_pci_put_device_id(struct dwc3_pci *glue, int id)
+{
+        int                     ret;
+
+        if (id < 0)
+                return;
+
+        ret = test_bit(id, dwc3_pci_devs);
+        WARN(!ret, "Device: %s\nID %d not in use\n",
+                        dev_driver_string(glue->dev), id);
+        clear_bit(id, dwc3_pci_devs);
+}
+
+static int __devinit dwc3_pci_probe(struct pci_dev *pci,
+                const struct pci_device_id *id)
+{
+        struct resource         res[2];
+        struct platform_device  *dwc3;
+        struct dwc3_pci         *glue;
+        int                     ret = -ENOMEM;
+        int                     devid;
+
+        glue = kzalloc(sizeof(*glue), GFP_KERNEL);
+        if (!glue) {
+                dev_err(&pci->dev, "not enough memory\n");
+                goto err0;
+        }
+
+        glue->dev       = &pci->dev;
+
+        ret = pci_enable_device(pci);
+        if (ret) {
+                dev_err(&pci->dev, "failed to enable pci device\n");
+                goto err1;
+        }
+
+        pci_set_power_state(pci, PCI_D0);
+        pci_set_master(pci);
+
+        devid = dwc3_pci_get_device_id(glue);
+        if (devid < 0)
+                goto err2;
+
+        dwc3 = platform_device_alloc("dwc3-pci", devid);
+        if (!dwc3) {
+                dev_err(&pci->dev, "couldn't allocate dwc3 device\n");
+                goto err3;
+        }
+
+        memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
+
+        res[0].start    = pci_resource_start(pci, 0);
+        res[0].end      = pci_resource_end(pci, 0);
+        res[0].name     = "dwc_usb3";
+        res[0].flags    = IORESOURCE_MEM;
+
+        res[1].start    = pci->irq;
+        res[1].name     = "dwc_usb3";
+        res[1].flags    = IORESOURCE_IRQ;
+
+        ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
+        if (ret) {
+                dev_err(&pci->dev, "couldn't add resources to dwc3 device\n");
+                goto err4;
+        }
+
+        pci_set_drvdata(pci, glue);
+
+        dma_set_coherent_mask(&dwc3->dev, pci->dev.coherent_dma_mask);
+
+        dwc3->dev.dma_mask = pci->dev.dma_mask;
+        dwc3->dev.dma_parms = pci->dev.dma_parms;
+        dwc3->dev.parent = &pci->dev;
+        glue->dwc3      = dwc3;
+
+        ret = platform_device_add(dwc3);
+        if (ret) {
+                dev_err(&pci->dev, "failed to register dwc3 device\n");
+                goto err4;
+        }
+
+        return 0;
+
+err4:
+        pci_set_drvdata(pci, NULL);
+        platform_device_put(dwc3);
+
+err3:
+        dwc3_pci_put_device_id(glue, devid);
+
+err2:
+        pci_disable_device(pci);
+
+err1:
+        kfree(pci);
+
+err0:
+        return ret;
+}
+
+static void __devexit dwc3_pci_remove(struct pci_dev *pci)
+{
+        struct dwc3_pci *glue = pci_get_drvdata(pci);
+
+        dwc3_pci_put_device_id(glue, glue->dwc3->id);
+        platform_device_unregister(glue->dwc3);
+        pci_set_drvdata(pci, NULL);
+        pci_disable_device(pci);
+        kfree(glue);
+}
+
+static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = {
+        {
+                PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
+                                PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
+        },
+        {  }    /* Terminating Entry */
+};
+MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
+
+static struct pci_driver dwc3_pci_driver = {
+        .name           = "pci-dwc3",
+        .id_table       = dwc3_pci_id_table,
+        .probe          = dwc3_pci_probe,
+        .remove         = __devexit_p(dwc3_pci_remove),
+};
+
+MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
+
+static int __devinit dwc3_pci_init(void)
+{
+        return pci_register_driver(&dwc3_pci_driver);
+}
+module_init(dwc3_pci_init);
+
+static void __exit dwc3_pci_exit(void)
+{
+        pci_unregister_driver(&dwc3_pci_driver);
+}
+module_exit(dwc3_pci_exit);
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
new file mode 100644
index 000000000000..69a4e43ddf59
--- /dev/null
+++ b/drivers/usb/dwc3/ep0.c
@@ -0,0 +1,804 @@
+/**
+ * ep0.c - DesignWare USB3 DRD Controller Endpoint 0 Handling
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@ti.com>,
+ *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/dma-mapping.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include "core.h"
+#include "gadget.h"
+#include "io.h"
+
+static void dwc3_ep0_inspect_setup(struct dwc3 *dwc,
+                const struct dwc3_event_depevt *event);
+
+static const char *dwc3_ep0_state_string(enum dwc3_ep0_state state)
+{
+        switch (state) {
+        case EP0_UNCONNECTED:
+                return "Unconnected";
+        case EP0_SETUP_PHASE:
+                return "Setup Phase";
+        case EP0_DATA_PHASE:
+                return "Data Phase";
+        case EP0_STATUS_PHASE:
+                return "Status Phase";
+        default:
+                return "UNKNOWN";
+        }
+}
+
+static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma,
+                u32 len, u32 type)
+{
+        struct dwc3_gadget_ep_cmd_params params;
+        struct dwc3_trb_hw              *trb_hw;
+        struct dwc3_trb                 trb;
+        struct dwc3_ep                  *dep;
+
+        int                             ret;
+
+        dep = dwc->eps[epnum];
+        if (dep->flags & DWC3_EP_BUSY) {
+                dev_vdbg(dwc->dev, "%s: still busy\n", dep->name);
+                return 0;
+        }
+
+        trb_hw = dwc->ep0_trb;
+        memset(&trb, 0, sizeof(trb));
+
+        trb.trbctl = type;
+        trb.bplh = buf_dma;
+        trb.length = len;
+
+        trb.hwo = 1;
+        trb.lst = 1;
+        trb.ioc = 1;
+        trb.isp_imi = 1;
+
+        dwc3_trb_to_hw(&trb, trb_hw);
+
+        memset(&params, 0, sizeof(params));
+        params.param0 = upper_32_bits(dwc->ep0_trb_addr);
+        params.param1 = lower_32_bits(dwc->ep0_trb_addr);
+
+        ret = dwc3_send_gadget_ep_cmd(dwc, dep->number,
+                        DWC3_DEPCMD_STARTTRANSFER, &params);
+        if (ret < 0) {
+                dev_dbg(dwc->dev, "failed to send STARTTRANSFER command\n");
+                return ret;
+        }
+
+        dep->flags |= DWC3_EP_BUSY;
+        dep->res_trans_idx = dwc3_gadget_ep_get_transfer_index(dwc,
+                        dep->number);
+
+        dwc->ep0_next_event = DWC3_EP0_COMPLETE;
+
+        return 0;
+}
+
+static int __dwc3_gadget_ep0_queue(struct dwc3_ep *dep,
+                struct dwc3_request *req)
+{
+        int                     ret = 0;
+
+        req->request.actual     = 0;
+        req->request.status     = -EINPROGRESS;
+        req->epnum              = dep->number;
+
+        list_add_tail(&req->list, &dep->request_list);
+
+        /*
+         * Gadget driver might not be quick enough to queue a request
+         * before we get a Transfer Not Ready event on this endpoint.
+         *
+         * In that case, we will set DWC3_EP_PENDING_REQUEST. When that
+         * flag is set, it's telling us that as soon as Gadget queues the
+         * required request, we should kick the transfer here because the
+         * IRQ we were waiting for is long gone.
+         */
+        if (dep->flags & DWC3_EP_PENDING_REQUEST) {
+                struct dwc3     *dwc = dep->dwc;
+                unsigned        direction;
+                u32             type;
+
+                direction = !!(dep->flags & DWC3_EP0_DIR_IN);
+
+                if (dwc->ep0state == EP0_STATUS_PHASE) {
+                        type = dwc->three_stage_setup
+                                ? DWC3_TRBCTL_CONTROL_STATUS3
+                                : DWC3_TRBCTL_CONTROL_STATUS2;
+                } else if (dwc->ep0state == EP0_DATA_PHASE) {
+                        type = DWC3_TRBCTL_CONTROL_DATA;
+                } else {
+                        /* should never happen */
+                        WARN_ON(1);
+                        return 0;
+                }
+
+                ret = dwc3_ep0_start_trans(dwc, direction,
+                                req->request.dma, req->request.length, type);
+                dep->flags &= ~(DWC3_EP_PENDING_REQUEST |
+                                DWC3_EP0_DIR_IN);
+        }
+
+        return ret;
+}
+
+int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
+                gfp_t gfp_flags)
+{
+        struct dwc3_request             *req = to_dwc3_request(request);
+        struct dwc3_ep                  *dep = to_dwc3_ep(ep);
+        struct dwc3                     *dwc = dep->dwc;
+
+        unsigned long                   flags;
+
+        int                             ret;
+
+        spin_lock_irqsave(&dwc->lock, flags);
+        if (!dep->desc) {
+                dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n",
+                                request, dep->name);
+                ret = -ESHUTDOWN;
+                goto out;
+        }
+
+        /* we share one TRB for ep0/1 */
+        if (!list_empty(&dwc->eps[0]->request_list) ||
+                        !list_empty(&dwc->eps[1]->request_list) ||
+                        dwc->ep0_status_pending) {
+                ret = -EBUSY;
+                goto out;
+        }
+
+        dev_vdbg(dwc->dev, "queueing request %p to %s length %d, state '%s'\n",
+                        request, dep->name, request->length,
+                        dwc3_ep0_state_string(dwc->ep0state));
+
+        ret = __dwc3_gadget_ep0_queue(dep, req);
+
+out:
+        spin_unlock_irqrestore(&dwc->lock, flags);
+
+        return ret;
+}
+
+static void dwc3_ep0_stall_and_restart(struct dwc3 *dwc)
+{
+        struct dwc3_ep          *dep = dwc->eps[0];
+
+        /* stall is always issued on EP0 */
+        __dwc3_gadget_ep_set_halt(dwc->eps[0], 1);
+        dwc->eps[0]->flags = DWC3_EP_ENABLED;
+
+        if (!list_empty(&dep->request_list)) {
+                struct dwc3_request     *req;
+
+                req = next_request(&dep->request_list);
+                dwc3_gadget_giveback(dep, req, -ECONNRESET);
+        }
+
+        dwc->ep0state = EP0_SETUP_PHASE;
+        dwc3_ep0_out_start(dwc);
+}
+
+void dwc3_ep0_out_start(struct dwc3 *dwc)
+{
+        int                             ret;
+
+        ret = dwc3_ep0_start_trans(dwc, 0, dwc->ctrl_req_addr, 8,
+                        DWC3_TRBCTL_CONTROL_SETUP);
+        WARN_ON(ret < 0);
+}
+
+static struct dwc3_ep *dwc3_wIndex_to_dep(struct dwc3 *dwc, __le16 wIndex_le)
+{
+        struct dwc3_ep          *dep;
+        u32                     windex = le16_to_cpu(wIndex_le);
+        u32                     epnum;
+
+        epnum = (windex & USB_ENDPOINT_NUMBER_MASK) << 1;
+        if ((windex & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
+                epnum |= 1;
+
+        dep = dwc->eps[epnum];
+        if (dep->flags & DWC3_EP_ENABLED)
+                return dep;
+
+        return NULL;
+}
+
+static void dwc3_ep0_send_status_response(struct dwc3 *dwc)
+{
+        dwc3_ep0_start_trans(dwc, 1, dwc->setup_buf_addr,
+                        dwc->ep0_usb_req.length,
+                        DWC3_TRBCTL_CONTROL_DATA);
+}
+
+/*
+ * ch 9.4.5
+ */
+static int dwc3_ep0_handle_status(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
+{
+        struct dwc3_ep          *dep;
+        u32                     recip;
+        u16                     usb_status = 0;
+        __le16                  *response_pkt;
+
+        recip = ctrl->bRequestType & USB_RECIP_MASK;
+        switch (recip) {
+        case USB_RECIP_DEVICE:
+                /*
+                 * We are self-powered. U1/U2/LTM will be set later
+                 * once we handle this states. RemoteWakeup is 0 on SS
+                 */
+                usb_status |= dwc->is_selfpowered << USB_DEVICE_SELF_POWERED;
+                break;
+
+        case USB_RECIP_INTERFACE:
+                /*
+                 * Function Remote Wake Capable D0
+                 * Function Remote Wakeup       D1
+                 */
+                break;
+
+        case USB_RECIP_ENDPOINT:
+                dep = dwc3_wIndex_to_dep(dwc, ctrl->wIndex);
+                if (!dep)
+                       return -EINVAL;
+
+                if (dep->flags & DWC3_EP_STALL)
+                        usb_status = 1 << USB_ENDPOINT_HALT;
+                break;
+        default:
+                return -EINVAL;
+        };
+
+        response_pkt = (__le16 *) dwc->setup_buf;
+        *response_pkt = cpu_to_le16(usb_status);
+        dwc->ep0_usb_req.length = sizeof(*response_pkt);
+        dwc->ep0_status_pending = 1;
+
+        return 0;
+}
+
+static int dwc3_ep0_handle_feature(struct dwc3 *dwc,
+                struct usb_ctrlrequest *ctrl, int set)
+{
+        struct dwc3_ep          *dep;
+        u32                     recip;
+        u32                     wValue;
+        u32                     wIndex;
+        u32                     reg;
+        int                     ret;
+        u32                     mode;
+
+        wValue = le16_to_cpu(ctrl->wValue);
+        wIndex = le16_to_cpu(ctrl->wIndex);
+        recip = ctrl->bRequestType & USB_RECIP_MASK;
+        switch (recip) {
+        case USB_RECIP_DEVICE:
+
+                /*
+                 * 9.4.1 says only only for SS, in AddressState only for
+                 * default control pipe
+                 */
+                switch (wValue) {
+                case USB_DEVICE_U1_ENABLE:
+                case USB_DEVICE_U2_ENABLE:
+                case USB_DEVICE_LTM_ENABLE:
+                        if (dwc->dev_state != DWC3_CONFIGURED_STATE)
+                                return -EINVAL;
+                        if (dwc->speed != DWC3_DSTS_SUPERSPEED)
+                                return -EINVAL;
+                }
+
+                /* XXX add U[12] & LTM */
+                switch (wValue) {
+                case USB_DEVICE_REMOTE_WAKEUP:
+                        break;
+                case USB_DEVICE_U1_ENABLE:
+                        break;
+                case USB_DEVICE_U2_ENABLE:
+                        break;
+                case USB_DEVICE_LTM_ENABLE:
+                        break;
+
+                case USB_DEVICE_TEST_MODE:
+                        if ((wIndex & 0xff) != 0)
+                                return -EINVAL;
+                        if (!set)
+                                return -EINVAL;
+
+                        mode = wIndex >> 8;
+                        reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+                        reg &= ~DWC3_DCTL_TSTCTRL_MASK;
+
+                        switch (mode) {
+                        case TEST_J:
+                        case TEST_K:
+                        case TEST_SE0_NAK:
+                        case TEST_PACKET:
+                        case TEST_FORCE_EN:
+                                reg |= mode << 1;
+                                break;
+                        default:
+                                return -EINVAL;
+                        }
+                        dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+                        break;
+                default:
+                        return -EINVAL;
+                }
+                break;
+
+        case USB_RECIP_INTERFACE:
+                switch (wValue) {
+                case USB_INTRF_FUNC_SUSPEND:
+                        if (wIndex & USB_INTRF_FUNC_SUSPEND_LP)
+                                /* XXX enable Low power suspend */
+                                ;
+                        if (wIndex & USB_INTRF_FUNC_SUSPEND_RW)
+                                /* XXX enable remote wakeup */
+                                ;
+                        break;
+                default:
+                        return -EINVAL;
+                }
+                break;
+
+        case USB_RECIP_ENDPOINT:
+                switch (wValue) {
+                case USB_ENDPOINT_HALT:
+
+                        dep =  dwc3_wIndex_to_dep(dwc, ctrl->wIndex);
+                        if (!dep)
+                                return -EINVAL;
+                        ret = __dwc3_gadget_ep_set_halt(dep, set);
+                        if (ret)
+                                return -EINVAL;
+                        break;
+                default:
+                        return -EINVAL;
+                }
+                break;
+
+        default:
+                return -EINVAL;
+        };
+
+        return 0;
+}
+
+static int dwc3_ep0_set_address(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
+{
+        u32 addr;
+        u32 reg;
+
+        addr = le16_to_cpu(ctrl->wValue);
+        if (addr > 127)
+                return -EINVAL;
+
+        reg = dwc3_readl(dwc->regs, DWC3_DCFG);
+        reg &= ~(DWC3_DCFG_DEVADDR_MASK);
+        reg |= DWC3_DCFG_DEVADDR(addr);
+        dwc3_writel(dwc->regs, DWC3_DCFG, reg);
+
+        if (addr)
+                dwc->dev_state = DWC3_ADDRESS_STATE;
+        else
+                dwc->dev_state = DWC3_DEFAULT_STATE;
+
+        return 0;
+}
+
+static int dwc3_ep0_delegate_req(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
+{
+        int ret;
+
+        spin_unlock(&dwc->lock);
+        ret = dwc->gadget_driver->setup(&dwc->gadget, ctrl);
+        spin_lock(&dwc->lock);
+        return ret;
+}
+
+static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
+{
+        u32 cfg;
+        int ret;
+
+        dwc->start_config_issued = false;
+        cfg = le16_to_cpu(ctrl->wValue);
+
+        switch (dwc->dev_state) {
+        case DWC3_DEFAULT_STATE:
+                return -EINVAL;
+                break;
+
+        case DWC3_ADDRESS_STATE:
+                ret = dwc3_ep0_delegate_req(dwc, ctrl);
+                /* if the cfg matches and the cfg is non zero */
+                if (!ret && cfg)
+                        dwc->dev_state = DWC3_CONFIGURED_STATE;
+                break;
+
+        case DWC3_CONFIGURED_STATE:
+                ret = dwc3_ep0_delegate_req(dwc, ctrl);
+                if (!cfg)
+                        dwc->dev_state = DWC3_ADDRESS_STATE;
+                break;
+        }
+        return 0;
+}
+
+static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
+{
+        int ret;
+
+        switch (ctrl->bRequest) {
+        case USB_REQ_GET_STATUS:
+                dev_vdbg(dwc->dev, "USB_REQ_GET_STATUS\n");
+                ret = dwc3_ep0_handle_status(dwc, ctrl);
+                break;
+        case USB_REQ_CLEAR_FEATURE:
+                dev_vdbg(dwc->dev, "USB_REQ_CLEAR_FEATURE\n");
+                ret = dwc3_ep0_handle_feature(dwc, ctrl, 0);
+                break;
+        case USB_REQ_SET_FEATURE:
+                dev_vdbg(dwc->dev, "USB_REQ_SET_FEATURE\n");
+                ret = dwc3_ep0_handle_feature(dwc, ctrl, 1);
+                break;
+        case USB_REQ_SET_ADDRESS:
+                dev_vdbg(dwc->dev, "USB_REQ_SET_ADDRESS\n");
+                ret = dwc3_ep0_set_address(dwc, ctrl);
+                break;
+        case USB_REQ_SET_CONFIGURATION:
+                dev_vdbg(dwc->dev, "USB_REQ_SET_CONFIGURATION\n");
+                ret = dwc3_ep0_set_config(dwc, ctrl);
+                break;
+        default:
+                dev_vdbg(dwc->dev, "Forwarding to gadget driver\n");
+                ret = dwc3_ep0_delegate_req(dwc, ctrl);
+                break;
+        };
+
+        return ret;
+}
+
+static void dwc3_ep0_inspect_setup(struct dwc3 *dwc,
+                const struct dwc3_event_depevt *event)
+{
+        struct usb_ctrlrequest *ctrl = dwc->ctrl_req;
+        int ret;
+        u32 len;
+
+        if (!dwc->gadget_driver)
+                goto err;
+
+        len = le16_to_cpu(ctrl->wLength);
+        if (!len) {
+                dwc->three_stage_setup = false;
+                dwc->ep0_expect_in = false;
+                dwc->ep0_next_event = DWC3_EP0_NRDY_STATUS;
+        } else {
+                dwc->three_stage_setup = true;
+                dwc->ep0_expect_in = !!(ctrl->bRequestType & USB_DIR_IN);
+                dwc->ep0_next_event = DWC3_EP0_NRDY_DATA;
+        }
+
+        if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD)
+                ret = dwc3_ep0_std_request(dwc, ctrl);
+        else
+                ret = dwc3_ep0_delegate_req(dwc, ctrl);
+
+        if (ret >= 0)
+                return;
+
+err:
+        dwc3_ep0_stall_and_restart(dwc);
+}
+
+static void dwc3_ep0_complete_data(struct dwc3 *dwc,
+                const struct dwc3_event_depevt *event)
+{
+        struct dwc3_request     *r = NULL;
+        struct usb_request      *ur;
+        struct dwc3_trb         trb;
+        struct dwc3_ep          *dep;
+        u32                     transferred;
+        u8                      epnum;
+
+        epnum = event->endpoint_number;
+        dep = dwc->eps[epnum];
+
+        dwc->ep0_next_event = DWC3_EP0_NRDY_STATUS;
+
+        if (!dwc->ep0_status_pending) {
+                r = next_request(&dwc->eps[0]->request_list);
+                ur = &r->request;
+        } else {
+                ur = &dwc->ep0_usb_req;
+                dwc->ep0_status_pending = 0;
+        }
+
+        dwc3_trb_to_nat(dwc->ep0_trb, &trb);
+
+        if (dwc->ep0_bounced) {
+                struct dwc3_ep  *ep0 = dwc->eps[0];
+
+                transferred = min_t(u32, ur->length,
+                                ep0->endpoint.maxpacket - trb.length);
+                memcpy(ur->buf, dwc->ep0_bounce, transferred);
+                dwc->ep0_bounced = false;
+        } else {
+                transferred = ur->length - trb.length;
+                ur->actual += transferred;
+        }
+
+        if ((epnum & 1) && ur->actual < ur->length) {
+                /* for some reason we did not get everything out */
+
+                dwc3_ep0_stall_and_restart(dwc);
+        } else {
+                /*
+                 * handle the case where we have to send a zero packet. This
+                 * seems to be case when req.length > maxpacket. Could it be?
+                 */
+                if (r)
+                        dwc3_gadget_giveback(dep, r, 0);
+        }
+}
+
+static void dwc3_ep0_complete_req(struct dwc3 *dwc,
+                const struct dwc3_event_depevt *event)
+{
+        struct dwc3_request     *r;
+        struct dwc3_ep          *dep;
+
+        dep = dwc->eps[0];
+
+        if (!list_empty(&dep->request_list)) {
+                r = next_request(&dep->request_list);
+
+                dwc3_gadget_giveback(dep, r, 0);
+        }
+
+        dwc->ep0state = EP0_SETUP_PHASE;
+        dwc3_ep0_out_start(dwc);
+}
+
+static void dwc3_ep0_xfer_complete(struct dwc3 *dwc,
+                        const struct dwc3_event_depevt *event)
+{
+        struct dwc3_ep          *dep = dwc->eps[event->endpoint_number];
+
+        dep->flags &= ~DWC3_EP_BUSY;
+
+        switch (dwc->ep0state) {
+        case EP0_SETUP_PHASE:
+                dev_vdbg(dwc->dev, "Inspecting Setup Bytes\n");
+                dwc3_ep0_inspect_setup(dwc, event);
+                break;
+
+        case EP0_DATA_PHASE:
+                dev_vdbg(dwc->dev, "Data Phase\n");
+                dwc3_ep0_complete_data(dwc, event);
+                break;
+
+        case EP0_STATUS_PHASE:
+                dev_vdbg(dwc->dev, "Status Phase\n");
+                dwc3_ep0_complete_req(dwc, event);
+                break;
+        default:
+                WARN(true, "UNKNOWN ep0state %d\n", dwc->ep0state);
+        }
+}
+
+static void dwc3_ep0_do_control_setup(struct dwc3 *dwc,
+                const struct dwc3_event_depevt *event)
+{
+        dwc->ep0state = EP0_SETUP_PHASE;
+        dwc3_ep0_out_start(dwc);
+}
+
+static void dwc3_ep0_do_control_data(struct dwc3 *dwc,
+                const struct dwc3_event_depevt *event)
+{
+        struct dwc3_ep          *dep;
+        struct dwc3_request     *req;
+        int                     ret;
+
+        dep = dwc->eps[0];
+        dwc->ep0state = EP0_DATA_PHASE;
+
+        if (dwc->ep0_status_pending) {
+                dwc3_ep0_send_status_response(dwc);
+                return;
+        }
+
+        if (list_empty(&dep->request_list)) {
+                dev_vdbg(dwc->dev, "pending request for EP0 Data phase\n");
+                dep->flags |= DWC3_EP_PENDING_REQUEST;
+
+                if (event->endpoint_number)
+                        dep->flags |= DWC3_EP0_DIR_IN;
+                return;
+        }
+
+        req = next_request(&dep->request_list);
+        req->direction = !!event->endpoint_number;
+
+        dwc->ep0state = EP0_DATA_PHASE;
+        if (req->request.length == 0) {
+                ret = dwc3_ep0_start_trans(dwc, event->endpoint_number,
+                                dwc->ctrl_req_addr, 0,
+                                DWC3_TRBCTL_CONTROL_DATA);
+        } else if ((req->request.length % dep->endpoint.maxpacket)
+                        && (event->endpoint_number == 0)) {
+                dwc3_map_buffer_to_dma(req);
+
+                WARN_ON(req->request.length > dep->endpoint.maxpacket);
+
+                dwc->ep0_bounced = true;
+
+                /*
+                 * REVISIT in case request length is bigger than EP0
+                 * wMaxPacketSize, we will need two chained TRBs to handle
+                 * the transfer.
+                 */
+                ret = dwc3_ep0_start_trans(dwc, event->endpoint_number,
+                                dwc->ep0_bounce_addr, dep->endpoint.maxpacket,
+                                DWC3_TRBCTL_CONTROL_DATA);
+        } else {
+                dwc3_map_buffer_to_dma(req);
+
+                ret = dwc3_ep0_start_trans(dwc, event->endpoint_number,
+                                req->request.dma, req->request.length,
+                                DWC3_TRBCTL_CONTROL_DATA);
+        }
+
+        WARN_ON(ret < 0);
+}
+
+static void dwc3_ep0_do_control_status(struct dwc3 *dwc,
+                const struct dwc3_event_depevt *event)
+{
+        u32                     type;
+        int                     ret;
+
+        dwc->ep0state = EP0_STATUS_PHASE;
+
+        type = dwc->three_stage_setup ? DWC3_TRBCTL_CONTROL_STATUS3
+                : DWC3_TRBCTL_CONTROL_STATUS2;
+
+        ret = dwc3_ep0_start_trans(dwc, event->endpoint_number,
+                        dwc->ctrl_req_addr, 0, type);
+
+        WARN_ON(ret < 0);
+}
+
+static void dwc3_ep0_xfernotready(struct dwc3 *dwc,
+                const struct dwc3_event_depevt *event)
+{
+        switch (event->status) {
+        case DEPEVT_STATUS_CONTROL_SETUP:
+                dev_vdbg(dwc->dev, "Control Setup\n");
+                dwc3_ep0_do_control_setup(dwc, event);
+                break;
+
+        case DEPEVT_STATUS_CONTROL_DATA:
+                dev_vdbg(dwc->dev, "Control Data\n");
+
+                if (dwc->ep0_next_event != DWC3_EP0_NRDY_DATA) {
+                        dev_vdbg(dwc->dev, "Expected %d got %d\n",
+                                        dwc->ep0_next_event,
+                                        DWC3_EP0_NRDY_DATA);
+
+                        dwc3_ep0_stall_and_restart(dwc);
+                        return;
+                }
+
+                /*
+                 * One of the possible error cases is when Host _does_
+                 * request for Data Phase, but it does so on the wrong
+                 * direction.
+                 *
+                 * Here, we already know ep0_next_event is DATA (see above),
+                 * so we only need to check for direction.
+                 */
+                if (dwc->ep0_expect_in != event->endpoint_number) {
+                        dev_vdbg(dwc->dev, "Wrong direction for Data phase\n");
+                        dwc3_ep0_stall_and_restart(dwc);
+                        return;
+                }
+
+                dwc3_ep0_do_control_data(dwc, event);
+                break;
+
+        case DEPEVT_STATUS_CONTROL_STATUS:
+                dev_vdbg(dwc->dev, "Control Status\n");
+
+                if (dwc->ep0_next_event != DWC3_EP0_NRDY_STATUS) {
+                        dev_vdbg(dwc->dev, "Expected %d got %d\n",
+                                        dwc->ep0_next_event,
+                                        DWC3_EP0_NRDY_STATUS);
+
+                        dwc3_ep0_stall_and_restart(dwc);
+                        return;
+                }
+                dwc3_ep0_do_control_status(dwc, event);
+        }
+}
+
+void dwc3_ep0_interrupt(struct dwc3 *dwc,
+                const const struct dwc3_event_depevt *event)
+{
+        u8                      epnum = event->endpoint_number;
+
+        dev_dbg(dwc->dev, "%s while ep%d%s in state '%s'\n",
+                        dwc3_ep_event_string(event->endpoint_event),
+                        epnum >> 1, (epnum & 1) ? "in" : "out",
+                        dwc3_ep0_state_string(dwc->ep0state));
+
+        switch (event->endpoint_event) {
+        case DWC3_DEPEVT_XFERCOMPLETE:
+                dwc3_ep0_xfer_complete(dwc, event);
+                break;
+
+        case DWC3_DEPEVT_XFERNOTREADY:
+                dwc3_ep0_xfernotready(dwc, event);
+                break;
+
+        case DWC3_DEPEVT_XFERINPROGRESS:
+        case DWC3_DEPEVT_RXTXFIFOEVT:
+        case DWC3_DEPEVT_STREAMEVT:
+        case DWC3_DEPEVT_EPCMDCMPLT:
+                break;
+        }
+}
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
new file mode 100644
index 000000000000..fa824cfdd2eb
--- /dev/null
+++ b/drivers/usb/dwc3/gadget.c
@@ -0,0 +1,2104 @@
+/**
+ * gadget.c - DesignWare USB3 DRD Controller Gadget Framework Link
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@ti.com>,
+ *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/dma-mapping.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include "core.h"
+#include "gadget.h"
+#include "io.h"
+
+#define DMA_ADDR_INVALID        (~(dma_addr_t)0)
+
+void dwc3_map_buffer_to_dma(struct dwc3_request *req)
+{
+        struct dwc3                     *dwc = req->dep->dwc;
+
+        if (req->request.length == 0) {
+                /* req->request.dma = dwc->setup_buf_addr; */
+                return;
+        }
+
+        if (req->request.dma == DMA_ADDR_INVALID) {
+                req->request.dma = dma_map_single(dwc->dev, req->request.buf,
+                                req->request.length, req->direction
+                                ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+                req->mapped = true;
+        }
+}
+
+void dwc3_unmap_buffer_from_dma(struct dwc3_request *req)
+{
+        struct dwc3                     *dwc = req->dep->dwc;
+
+        if (req->request.length == 0) {
+                req->request.dma = DMA_ADDR_INVALID;
+                return;
+        }
+
+        if (req->mapped) {
+                dma_unmap_single(dwc->dev, req->request.dma,
+                                req->request.length, req->direction
+                                ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+                req->mapped = 0;
+                req->request.dma = DMA_ADDR_INVALID;
+        }
+}
+
+void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
+                int status)
+{
+        struct dwc3                     *dwc = dep->dwc;
+
+        if (req->queued) {
+                dep->busy_slot++;
+                /*
+                 * Skip LINK TRB. We can't use req->trb and check for
+                 * DWC3_TRBCTL_LINK_TRB because it points the TRB we just
+                 * completed (not the LINK TRB).
+                 */
+                if (((dep->busy_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) &&
+                                usb_endpoint_xfer_isoc(dep->desc))
+                        dep->busy_slot++;
+        }
+        list_del(&req->list);
+
+        if (req->request.status == -EINPROGRESS)
+                req->request.status = status;
+
+        dwc3_unmap_buffer_from_dma(req);
+
+        dev_dbg(dwc->dev, "request %p from %s completed %d/%d ===> %d\n",
+                        req, dep->name, req->request.actual,
+                        req->request.length, status);
+
+        spin_unlock(&dwc->lock);
+        req->request.complete(&req->dep->endpoint, &req->request);
+        spin_lock(&dwc->lock);
+}
+
+static const char *dwc3_gadget_ep_cmd_string(u8 cmd)
+{
+        switch (cmd) {
+        case DWC3_DEPCMD_DEPSTARTCFG:
+                return "Start New Configuration";
+        case DWC3_DEPCMD_ENDTRANSFER:
+                return "End Transfer";
+        case DWC3_DEPCMD_UPDATETRANSFER:
+                return "Update Transfer";
+        case DWC3_DEPCMD_STARTTRANSFER:
+                return "Start Transfer";
+        case DWC3_DEPCMD_CLEARSTALL:
+                return "Clear Stall";
+        case DWC3_DEPCMD_SETSTALL:
+                return "Set Stall";
+        case DWC3_DEPCMD_GETSEQNUMBER:
+                return "Get Data Sequence Number";
+        case DWC3_DEPCMD_SETTRANSFRESOURCE:
+                return "Set Endpoint Transfer Resource";
+        case DWC3_DEPCMD_SETEPCONFIG:
+                return "Set Endpoint Configuration";
+        default:
+                return "UNKNOWN command";
+        }
+}
+
+int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
+                unsigned cmd, struct dwc3_gadget_ep_cmd_params *params)
+{
+        struct dwc3_ep          *dep = dwc->eps[ep];
+        u32                     timeout = 500;
+        u32                     reg;
+
+        dev_vdbg(dwc->dev, "%s: cmd '%s' params %08x %08x %08x\n",
+                        dep->name,
+                        dwc3_gadget_ep_cmd_string(cmd), params->param0,
+                        params->param1, params->param2);
+
+        dwc3_writel(dwc->regs, DWC3_DEPCMDPAR0(ep), params->param0);
+        dwc3_writel(dwc->regs, DWC3_DEPCMDPAR1(ep), params->param1);
+        dwc3_writel(dwc->regs, DWC3_DEPCMDPAR2(ep), params->param2);
+
+        dwc3_writel(dwc->regs, DWC3_DEPCMD(ep), cmd | DWC3_DEPCMD_CMDACT);
+        do {
+                reg = dwc3_readl(dwc->regs, DWC3_DEPCMD(ep));
+                if (!(reg & DWC3_DEPCMD_CMDACT)) {
+                        dev_vdbg(dwc->dev, "Command Complete --> %d\n",
+                                        DWC3_DEPCMD_STATUS(reg));
+                        return 0;
+                }
+
+                /*
+                 * We can't sleep here, because it is also called from
+                 * interrupt context.
+                 */
+                timeout--;
+                if (!timeout)
+                        return -ETIMEDOUT;
+
+                udelay(1);
+        } while (1);
+}
+
+static dma_addr_t dwc3_trb_dma_offset(struct dwc3_ep *dep,
+                struct dwc3_trb_hw *trb)
+{
+        u32             offset = (char *) trb - (char *) dep->trb_pool;
+
+        return dep->trb_pool_dma + offset;
+}
+
+static int dwc3_alloc_trb_pool(struct dwc3_ep *dep)
+{
+        struct dwc3             *dwc = dep->dwc;
+
+        if (dep->trb_pool)
+                return 0;
+
+        if (dep->number == 0 || dep->number == 1)
+                return 0;
+
+        dep->trb_pool = dma_alloc_coherent(dwc->dev,
+                        sizeof(struct dwc3_trb) * DWC3_TRB_NUM,
+                        &dep->trb_pool_dma, GFP_KERNEL);
+        if (!dep->trb_pool) {
+                dev_err(dep->dwc->dev, "failed to allocate trb pool for %s\n",
+                                dep->name);
+                return -ENOMEM;
+        }
+
+        return 0;
+}
+
+static void dwc3_free_trb_pool(struct dwc3_ep *dep)
+{
+        struct dwc3             *dwc = dep->dwc;
+
+        dma_free_coherent(dwc->dev, sizeof(struct dwc3_trb) * DWC3_TRB_NUM,
+                        dep->trb_pool, dep->trb_pool_dma);
+
+        dep->trb_pool = NULL;
+        dep->trb_pool_dma = 0;
+}
+
+static int dwc3_gadget_start_config(struct dwc3 *dwc, struct dwc3_ep *dep)
+{
+        struct dwc3_gadget_ep_cmd_params params;
+        u32                     cmd;
+
+        memset(&params, 0x00, sizeof(params));
+
+        if (dep->number != 1) {
+                cmd = DWC3_DEPCMD_DEPSTARTCFG;
+                /* XferRscIdx == 0 for ep0 and 2 for the remaining */
+                if (dep->number > 1) {
+                        if (dwc->start_config_issued)
+                                return 0;
+                        dwc->start_config_issued = true;
+                        cmd |= DWC3_DEPCMD_PARAM(2);
+                }
+
+                return dwc3_send_gadget_ep_cmd(dwc, 0, cmd, &params);
+        }
+
+        return 0;
+}
+
+static int dwc3_gadget_set_ep_config(struct dwc3 *dwc, struct dwc3_ep *dep,
+                const struct usb_endpoint_descriptor *desc)
+{
+        struct dwc3_gadget_ep_cmd_params params;
+
+        memset(&params, 0x00, sizeof(params));
+
+        params.param0 = DWC3_DEPCFG_EP_TYPE(usb_endpoint_type(desc))
+                | DWC3_DEPCFG_MAX_PACKET_SIZE(usb_endpoint_maxp(desc))
+                | DWC3_DEPCFG_BURST_SIZE(dep->endpoint.maxburst);
+
+        params.param1 = DWC3_DEPCFG_XFER_COMPLETE_EN
+                | DWC3_DEPCFG_XFER_NOT_READY_EN;
+
+        if (usb_endpoint_xfer_bulk(desc) && dep->endpoint.max_streams) {
+                params.param1 |= DWC3_DEPCFG_STREAM_CAPABLE
+                        | DWC3_DEPCFG_STREAM_EVENT_EN;
+                dep->stream_capable = true;
+        }
+
+        if (usb_endpoint_xfer_isoc(desc))
+                params.param1 |= DWC3_DEPCFG_XFER_IN_PROGRESS_EN;
+
+        /*
+         * We are doing 1:1 mapping for endpoints, meaning
+         * Physical Endpoints 2 maps to Logical Endpoint 2 and
+         * so on. We consider the direction bit as part of the physical
+         * endpoint number. So USB endpoint 0x81 is 0x03.
+         */
+        params.param1 |= DWC3_DEPCFG_EP_NUMBER(dep->number);
+
+        /*
+         * We must use the lower 16 TX FIFOs even though
+         * HW might have more
+         */
+        if (dep->direction)
+                params.param0 |= DWC3_DEPCFG_FIFO_NUMBER(dep->number >> 1);
+
+        if (desc->bInterval) {
+                params.param1 |= DWC3_DEPCFG_BINTERVAL_M1(desc->bInterval - 1);
+                dep->interval = 1 << (desc->bInterval - 1);
+        }
+
+        return dwc3_send_gadget_ep_cmd(dwc, dep->number,
+                        DWC3_DEPCMD_SETEPCONFIG, &params);
+}
+
+static int dwc3_gadget_set_xfer_resource(struct dwc3 *dwc, struct dwc3_ep *dep)
+{
+        struct dwc3_gadget_ep_cmd_params params;
+
+        memset(&params, 0x00, sizeof(params));
+
+        params.param0 = DWC3_DEPXFERCFG_NUM_XFER_RES(1);
+
+        return dwc3_send_gadget_ep_cmd(dwc, dep->number,
+                        DWC3_DEPCMD_SETTRANSFRESOURCE, &params);
+}
+
+/**
+ * __dwc3_gadget_ep_enable - Initializes a HW endpoint
+ * @dep: endpoint to be initialized
+ * @desc: USB Endpoint Descriptor
+ *
+ * Caller should take care of locking
+ */
+static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
+                const struct usb_endpoint_descriptor *desc)
+{
+        struct dwc3             *dwc = dep->dwc;
+        u32                     reg;
+        int                     ret = -ENOMEM;
+
+        if (!(dep->flags & DWC3_EP_ENABLED)) {
+                ret = dwc3_gadget_start_config(dwc, dep);
+                if (ret)
+                        return ret;
+        }
+
+        ret = dwc3_gadget_set_ep_config(dwc, dep, desc);
+        if (ret)
+                return ret;
+
+        if (!(dep->flags & DWC3_EP_ENABLED)) {
+                struct dwc3_trb_hw      *trb_st_hw;
+                struct dwc3_trb_hw      *trb_link_hw;
+                struct dwc3_trb         trb_link;
+
+                ret = dwc3_gadget_set_xfer_resource(dwc, dep);
+                if (ret)
+                        return ret;
+
+                dep->desc = desc;
+                dep->type = usb_endpoint_type(desc);
+                dep->flags |= DWC3_EP_ENABLED;
+
+                reg = dwc3_readl(dwc->regs, DWC3_DALEPENA);
+                reg |= DWC3_DALEPENA_EP(dep->number);
+                dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);
+
+                if (!usb_endpoint_xfer_isoc(desc))
+                        return 0;
+
+                memset(&trb_link, 0, sizeof(trb_link));
+
+                /* Link TRB for ISOC. The HWO but is never reset */
+                trb_st_hw = &dep->trb_pool[0];
+
+                trb_link.bplh = dwc3_trb_dma_offset(dep, trb_st_hw);
+                trb_link.trbctl = DWC3_TRBCTL_LINK_TRB;
+                trb_link.hwo = true;
+
+                trb_link_hw = &dep->trb_pool[DWC3_TRB_NUM - 1];
+                dwc3_trb_to_hw(&trb_link, trb_link_hw);
+        }
+
+        return 0;
+}
+
+static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum);
+static void dwc3_remove_requests(struct dwc3 *dwc, struct dwc3_ep *dep)
+{
+        struct dwc3_request             *req;
+
+        if (!list_empty(&dep->req_queued))
+                dwc3_stop_active_transfer(dwc, dep->number);
+
+        while (!list_empty(&dep->request_list)) {
+                req = next_request(&dep->request_list);
+
+                dwc3_gadget_giveback(dep, req, -ESHUTDOWN);
+        }
+}
+
+/**
+ * __dwc3_gadget_ep_disable - Disables a HW endpoint
+ * @dep: the endpoint to disable
+ *
+ * This function also removes requests which are currently processed ny the
+ * hardware and those which are not yet scheduled.
+ * Caller should take care of locking.
+ */
+static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep)
+{
+        struct dwc3             *dwc = dep->dwc;
+        u32                     reg;
+
+        dwc3_remove_requests(dwc, dep);
+
+        reg = dwc3_readl(dwc->regs, DWC3_DALEPENA);
+        reg &= ~DWC3_DALEPENA_EP(dep->number);
+        dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);
+
+        dep->stream_capable = false;
+        dep->desc = NULL;
+        dep->type = 0;
+        dep->flags = 0;
+
+        return 0;
+}
+
+/* -------------------------------------------------------------------------- */
+
+static int dwc3_gadget_ep0_enable(struct usb_ep *ep,
+                const struct usb_endpoint_descriptor *desc)
+{
+        return -EINVAL;
+}
+
+static int dwc3_gadget_ep0_disable(struct usb_ep *ep)
+{
+        return -EINVAL;
+}
+
+/* -------------------------------------------------------------------------- */
+
+static int dwc3_gadget_ep_enable(struct usb_ep *ep,
+                const struct usb_endpoint_descriptor *desc)
+{
+        struct dwc3_ep                  *dep;
+        struct dwc3                     *dwc;
+        unsigned long                   flags;
+        int                             ret;
+
+        if (!ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) {
+                pr_debug("dwc3: invalid parameters\n");
+                return -EINVAL;
+        }
+
+        if (!desc->wMaxPacketSize) {
+                pr_debug("dwc3: missing wMaxPacketSize\n");
+                return -EINVAL;
+        }
+
+        dep = to_dwc3_ep(ep);
+        dwc = dep->dwc;
+
+        switch (usb_endpoint_type(desc)) {
+        case USB_ENDPOINT_XFER_CONTROL:
+                strncat(dep->name, "-control", sizeof(dep->name));
+                break;
+        case USB_ENDPOINT_XFER_ISOC:
+                strncat(dep->name, "-isoc", sizeof(dep->name));
+                break;
+        case USB_ENDPOINT_XFER_BULK:
+                strncat(dep->name, "-bulk", sizeof(dep->name));
+                break;
+        case USB_ENDPOINT_XFER_INT:
+                strncat(dep->name, "-int", sizeof(dep->name));
+                break;
+        default:
+                dev_err(dwc->dev, "invalid endpoint transfer type\n");
+        }
+
+        if (dep->flags & DWC3_EP_ENABLED) {
+                dev_WARN_ONCE(dwc->dev, true, "%s is already enabled\n",
+                                dep->name);
+                return 0;
+        }
+
+        dev_vdbg(dwc->dev, "Enabling %s\n", dep->name);
+
+        spin_lock_irqsave(&dwc->lock, flags);
+        ret = __dwc3_gadget_ep_enable(dep, desc);
+        spin_unlock_irqrestore(&dwc->lock, flags);
+
+        return ret;
+}
+
+static int dwc3_gadget_ep_disable(struct usb_ep *ep)
+{
+        struct dwc3_ep                  *dep;
+        struct dwc3                     *dwc;
+        unsigned long                   flags;
+        int                             ret;
+
+        if (!ep) {
+                pr_debug("dwc3: invalid parameters\n");
+                return -EINVAL;
+        }
+
+        dep = to_dwc3_ep(ep);
+        dwc = dep->dwc;
+
+        if (!(dep->flags & DWC3_EP_ENABLED)) {
+                dev_WARN_ONCE(dwc->dev, true, "%s is already disabled\n",
+                                dep->name);
+                return 0;
+        }
+
+        snprintf(dep->name, sizeof(dep->name), "ep%d%s",
+                        dep->number >> 1,
+                        (dep->number & 1) ? "in" : "out");
+
+        spin_lock_irqsave(&dwc->lock, flags);
+        ret = __dwc3_gadget_ep_disable(dep);
+        spin_unlock_irqrestore(&dwc->lock, flags);
+
+        return ret;
+}
+
+static struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep,
+        gfp_t gfp_flags)
+{
+        struct dwc3_request             *req;
+        struct dwc3_ep                  *dep = to_dwc3_ep(ep);
+        struct dwc3                     *dwc = dep->dwc;
+
+        req = kzalloc(sizeof(*req), gfp_flags);
+        if (!req) {
+                dev_err(dwc->dev, "not enough memory\n");
+                return NULL;
+        }
+
+        req->epnum      = dep->number;
+        req->dep        = dep;
+        req->request.dma = DMA_ADDR_INVALID;
+
+        return &req->request;
+}
+
+static void dwc3_gadget_ep_free_request(struct usb_ep *ep,
+                struct usb_request *request)
+{
+        struct dwc3_request             *req = to_dwc3_request(request);
+
+        kfree(req);
+}
+
+/*
+ * dwc3_prepare_trbs - setup TRBs from requests
+ * @dep: endpoint for which requests are being prepared
+ * @starting: true if the endpoint is idle and no requests are queued.
+ *
+ * The functions goes through the requests list and setups TRBs for the
+ * transfers. The functions returns once there are not more TRBs available or
+ * it run out of requests.
+ */
+static struct dwc3_request *dwc3_prepare_trbs(struct dwc3_ep *dep,
+                bool starting)
+{
+        struct dwc3_request     *req, *n, *ret = NULL;
+        struct dwc3_trb_hw      *trb_hw;
+        struct dwc3_trb         trb;
+        u32                     trbs_left;
+
+        BUILD_BUG_ON_NOT_POWER_OF_2(DWC3_TRB_NUM);
+
+        /* the first request must not be queued */
+        trbs_left = (dep->busy_slot - dep->free_slot) & DWC3_TRB_MASK;
+        /*
+         * if busy & slot are equal than it is either full or empty. If we are
+         * starting to proceed requests then we are empty. Otherwise we ar
+         * full and don't do anything
+         */
+        if (!trbs_left) {
+                if (!starting)
+                        return NULL;
+                trbs_left = DWC3_TRB_NUM;
+                /*
+                 * In case we start from scratch, we queue the ISOC requests
+                 * starting from slot 1. This is done because we use ring
+                 * buffer and have no LST bit to stop us. Instead, we place
+                 * IOC bit TRB_NUM/4. We try to avoid to having an interrupt
+                 * after the first request so we start at slot 1 and have
+                 * 7 requests proceed before we hit the first IOC.
+                 * Other transfer types don't use the ring buffer and are
+                 * processed from the first TRB until the last one. Since we
+                 * don't wrap around we have to start at the beginning.
+                 */
+                if (usb_endpoint_xfer_isoc(dep->desc)) {
+                        dep->busy_slot = 1;
+                        dep->free_slot = 1;
+                } else {
+                        dep->busy_slot = 0;
+                        dep->free_slot = 0;
+                }
+        }
+
+        /* The last TRB is a link TRB, not used for xfer */
+        if ((trbs_left <= 1) && usb_endpoint_xfer_isoc(dep->desc))
+                return NULL;
+
+        list_for_each_entry_safe(req, n, &dep->request_list, list) {
+                unsigned int last_one = 0;
+                unsigned int cur_slot;
+
+                trb_hw = &dep->trb_pool[dep->free_slot & DWC3_TRB_MASK];
+                cur_slot = dep->free_slot;
+                dep->free_slot++;
+
+                /* Skip the LINK-TRB on ISOC */
+                if (((cur_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) &&
+                                usb_endpoint_xfer_isoc(dep->desc))
+                        continue;
+
+                dwc3_gadget_move_request_queued(req);
+                memset(&trb, 0, sizeof(trb));
+                trbs_left--;
+
+                /* Is our TRB pool empty? */
+                if (!trbs_left)
+                        last_one = 1;
+                /* Is this the last request? */
+                if (list_empty(&dep->request_list))
+                        last_one = 1;
+
+                /*
+                 * FIXME we shouldn't need to set LST bit always but we are
+                 * facing some weird problem with the Hardware where it doesn't
+                 * complete even though it has been previously started.
+                 *
+                 * While we're debugging the problem, as a workaround to
+                 * multiple TRBs handling, use only one TRB at a time.
+                 */
+                last_one = 1;
+
+                req->trb = trb_hw;
+                if (!ret)
+                        ret = req;
+
+                trb.bplh = req->request.dma;
+
+                if (usb_endpoint_xfer_isoc(dep->desc)) {
+                        trb.isp_imi = true;
+                        trb.csp = true;
+                } else {
+                        trb.lst = last_one;
+                }
+
+                if (usb_endpoint_xfer_bulk(dep->desc) && dep->stream_capable)
+                        trb.sid_sofn = req->request.stream_id;
+
+                switch (usb_endpoint_type(dep->desc)) {
+                case USB_ENDPOINT_XFER_CONTROL:
+                        trb.trbctl = DWC3_TRBCTL_CONTROL_SETUP;
+                        break;
+
+                case USB_ENDPOINT_XFER_ISOC:
+                        trb.trbctl = DWC3_TRBCTL_ISOCHRONOUS_FIRST;
+
+                        /* IOC every DWC3_TRB_NUM / 4 so we can refill */
+                        if (!(cur_slot % (DWC3_TRB_NUM / 4)))
+                                trb.ioc = last_one;
+                        break;
+
+                case USB_ENDPOINT_XFER_BULK:
+                case USB_ENDPOINT_XFER_INT:
+                        trb.trbctl = DWC3_TRBCTL_NORMAL;
+                        break;
+                default:
+                        /*
+                         * This is only possible with faulty memory because we
+                         * checked it already :)
+                         */
+                        BUG();
+                }
+
+                trb.length      = req->request.length;
+                trb.hwo = true;
+
+                dwc3_trb_to_hw(&trb, trb_hw);
+                req->trb_dma = dwc3_trb_dma_offset(dep, trb_hw);
+
+                if (last_one)
+                        break;
+        }
+
+        return ret;
+}
+
+static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param,
+                int start_new)
+{
+        struct dwc3_gadget_ep_cmd_params params;
+        struct dwc3_request             *req;
+        struct dwc3                     *dwc = dep->dwc;
+        int                             ret;
+        u32                             cmd;
+
+        if (start_new && (dep->flags & DWC3_EP_BUSY)) {
+                dev_vdbg(dwc->dev, "%s: endpoint busy\n", dep->name);
+                return -EBUSY;
+        }
+        dep->flags &= ~DWC3_EP_PENDING_REQUEST;
+
+        /*
+         * If we are getting here after a short-out-packet we don't enqueue any
+         * new requests as we try to set the IOC bit only on the last request.
+         */
+        if (start_new) {
+                if (list_empty(&dep->req_queued))
+                        dwc3_prepare_trbs(dep, start_new);
+
+                /* req points to the first request which will be sent */
+                req = next_request(&dep->req_queued);
+        } else {
+                /*
+                 * req points to the first request where HWO changed
+                 * from 0 to 1
+                 */
+                req = dwc3_prepare_trbs(dep, start_new);
+        }
+        if (!req) {
+                dep->flags |= DWC3_EP_PENDING_REQUEST;
+                return 0;
+        }
+
+        memset(&params, 0, sizeof(params));
+        params.param0 = upper_32_bits(req->trb_dma);
+        params.param1 = lower_32_bits(req->trb_dma);
+
+        if (start_new)
+                cmd = DWC3_DEPCMD_STARTTRANSFER;
+        else
+                cmd = DWC3_DEPCMD_UPDATETRANSFER;
+
+        cmd |= DWC3_DEPCMD_PARAM(cmd_param);
+        ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, &params);
+        if (ret < 0) {
+                dev_dbg(dwc->dev, "failed to send STARTTRANSFER command\n");
+
+                /*
+                 * FIXME we need to iterate over the list of requests
+                 * here and stop, unmap, free and del each of the linked
+                 * requests instead of we do now.
+                 */
+                dwc3_unmap_buffer_from_dma(req);
+                list_del(&req->list);
+                return ret;
+        }
+
+        dep->flags |= DWC3_EP_BUSY;
+        dep->res_trans_idx = dwc3_gadget_ep_get_transfer_index(dwc,
+                        dep->number);
+        if (!dep->res_trans_idx)
+                printk_once(KERN_ERR "%s() res_trans_idx is invalid\n", __func__);
+        return 0;
+}
+
+static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
+{
+        req->request.actual     = 0;
+        req->request.status     = -EINPROGRESS;
+        req->direction          = dep->direction;
+        req->epnum              = dep->number;
+
+        /*
+         * We only add to our list of requests now and
+         * start consuming the list once we get XferNotReady
+         * IRQ.
+         *
+         * That way, we avoid doing anything that we don't need
+         * to do now and defer it until the point we receive a
+         * particular token from the Host side.
+         *
+         * This will also avoid Host cancelling URBs due to too
+         * many NACKs.
+         */
+        dwc3_map_buffer_to_dma(req);
+        list_add_tail(&req->list, &dep->request_list);
+
+        /*
+         * There is one special case: XferNotReady with
+         * empty list of requests. We need to kick the
+         * transfer here in that situation, otherwise
+         * we will be NAKing forever.
+         *
+         * If we get XferNotReady before gadget driver
+         * has a chance to queue a request, we will ACK
+         * the IRQ but won't be able to receive the data
+         * until the next request is queued. The following
+         * code is handling exactly that.
+         */
+        if (dep->flags & DWC3_EP_PENDING_REQUEST) {
+                int ret;
+                int start_trans;
+
+                start_trans = 1;
+                if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
+                                dep->flags & DWC3_EP_BUSY)
+                        start_trans = 0;
+
+                ret =  __dwc3_gadget_kick_transfer(dep, 0, start_trans);
+                if (ret && ret != -EBUSY) {
+                        struct dwc3     *dwc = dep->dwc;
+
+                        dev_dbg(dwc->dev, "%s: failed to kick transfers\n",
+                                        dep->name);
+                }
+        };
+
+        return 0;
+}
+
+static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request,
+        gfp_t gfp_flags)
+{
+        struct dwc3_request             *req = to_dwc3_request(request);
+        struct dwc3_ep                  *dep = to_dwc3_ep(ep);
+        struct dwc3                     *dwc = dep->dwc;
+
+        unsigned long                   flags;
+
+        int                             ret;
+
+        if (!dep->desc) {
+                dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n",
+                                request, ep->name);
+                return -ESHUTDOWN;
+        }
+
+        dev_vdbg(dwc->dev, "queing request %p to %s length %d\n",
+                        request, ep->name, request->length);
+
+        spin_lock_irqsave(&dwc->lock, flags);
+        ret = __dwc3_gadget_ep_queue(dep, req);
+        spin_unlock_irqrestore(&dwc->lock, flags);
+
+        return ret;
+}
+
+static int dwc3_gadget_ep_dequeue(struct usb_ep *ep,
+                struct usb_request *request)
+{
+        struct dwc3_request             *req = to_dwc3_request(request);
+        struct dwc3_request             *r = NULL;
+
+        struct dwc3_ep                  *dep = to_dwc3_ep(ep);
+        struct dwc3                     *dwc = dep->dwc;
+
+        unsigned long                   flags;
+        int                             ret = 0;
+
+        spin_lock_irqsave(&dwc->lock, flags);
+
+        list_for_each_entry(r, &dep->request_list, list) {
+                if (r == req)
+                        break;
+        }
+
+        if (r != req) {
+                list_for_each_entry(r, &dep->req_queued, list) {
+                        if (r == req)
+                                break;
+                }
+                if (r == req) {
+                        /* wait until it is processed */
+                        dwc3_stop_active_transfer(dwc, dep->number);
+                        goto out0;
+                }
+                dev_err(dwc->dev, "request %p was not queued to %s\n",
+                                request, ep->name);
+                ret = -EINVAL;
+                goto out0;
+        }
+
+        /* giveback the request */
+        dwc3_gadget_giveback(dep, req, -ECONNRESET);
+
+out0:
+        spin_unlock_irqrestore(&dwc->lock, flags);
+
+        return ret;
+}
+
+int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value)
+{
+        struct dwc3_gadget_ep_cmd_params        params;
+        struct dwc3                             *dwc = dep->dwc;
+        int                                     ret;
+
+        memset(&params, 0x00, sizeof(params));
+
+        if (value) {
+                if (dep->number == 0 || dep->number == 1) {
+                        /*
+                         * Whenever EP0 is stalled, we will restart
+                         * the state machine, thus moving back to
+                         * Setup Phase
+                         */
+                        dwc->ep0state = EP0_SETUP_PHASE;
+                }
+
+                ret = dwc3_send_gadget_ep_cmd(dwc, dep->number,
+                        DWC3_DEPCMD_SETSTALL, &params);
+                if (ret)
+                        dev_err(dwc->dev, "failed to %s STALL on %s\n",
+                                        value ? "set" : "clear",
+                                        dep->name);
+                else
+                        dep->flags |= DWC3_EP_STALL;
+        } else {
+                if (dep->flags & DWC3_EP_WEDGE)
+                        return 0;
+
+                ret = dwc3_send_gadget_ep_cmd(dwc, dep->number,
+                        DWC3_DEPCMD_CLEARSTALL, &params);
+                if (ret)
+                        dev_err(dwc->dev, "failed to %s STALL on %s\n",
+                                        value ? "set" : "clear",
+                                        dep->name);
+                else
+                        dep->flags &= ~DWC3_EP_STALL;
+        }
+
+        return ret;
+}
+
+static int dwc3_gadget_ep_set_halt(struct usb_ep *ep, int value)
+{
+        struct dwc3_ep                  *dep = to_dwc3_ep(ep);
+        struct dwc3                     *dwc = dep->dwc;
+
+        unsigned long                   flags;
+
+        int                             ret;
+
+        spin_lock_irqsave(&dwc->lock, flags);
+
+        if (usb_endpoint_xfer_isoc(dep->desc)) {
+                dev_err(dwc->dev, "%s is of Isochronous type\n", dep->name);
+                ret = -EINVAL;
+                goto out;
+        }
+
+        ret = __dwc3_gadget_ep_set_halt(dep, value);
+out:
+        spin_unlock_irqrestore(&dwc->lock, flags);
+
+        return ret;
+}
+
+static int dwc3_gadget_ep_set_wedge(struct usb_ep *ep)
+{
+        struct dwc3_ep                  *dep = to_dwc3_ep(ep);
+
+        dep->flags |= DWC3_EP_WEDGE;
+
+        return dwc3_gadget_ep_set_halt(ep, 1);
+}
+
+/* -------------------------------------------------------------------------- */
+
+static struct usb_endpoint_descriptor dwc3_gadget_ep0_desc = {
+        .bLength        = USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType = USB_DT_ENDPOINT,
+        .bmAttributes   = USB_ENDPOINT_XFER_CONTROL,
+};
+
+static const struct usb_ep_ops dwc3_gadget_ep0_ops = {
+        .enable         = dwc3_gadget_ep0_enable,
+        .disable        = dwc3_gadget_ep0_disable,
+        .alloc_request  = dwc3_gadget_ep_alloc_request,
+        .free_request   = dwc3_gadget_ep_free_request,
+        .queue          = dwc3_gadget_ep0_queue,
+        .dequeue        = dwc3_gadget_ep_dequeue,
+        .set_halt       = dwc3_gadget_ep_set_halt,
+        .set_wedge      = dwc3_gadget_ep_set_wedge,
+};
+
+static const struct usb_ep_ops dwc3_gadget_ep_ops = {
+        .enable         = dwc3_gadget_ep_enable,
+        .disable        = dwc3_gadget_ep_disable,
+        .alloc_request  = dwc3_gadget_ep_alloc_request,
+        .free_request   = dwc3_gadget_ep_free_request,
+        .queue          = dwc3_gadget_ep_queue,
+        .dequeue        = dwc3_gadget_ep_dequeue,
+        .set_halt       = dwc3_gadget_ep_set_halt,
+        .set_wedge      = dwc3_gadget_ep_set_wedge,
+};
+
+/* -------------------------------------------------------------------------- */
+
+static int dwc3_gadget_get_frame(struct usb_gadget *g)
+{
+        struct dwc3             *dwc = gadget_to_dwc(g);
+        u32                     reg;
+
+        reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+        return DWC3_DSTS_SOFFN(reg);
+}
+
+static int dwc3_gadget_wakeup(struct usb_gadget *g)
+{
+        struct dwc3             *dwc = gadget_to_dwc(g);
+
+        unsigned long           timeout;
+        unsigned long           flags;
+
+        u32                     reg;
+
+        int                     ret = 0;
+
+        u8                      link_state;
+        u8                      speed;
+
+        spin_lock_irqsave(&dwc->lock, flags);
+
+        /*
+         * According to the Databook Remote wakeup request should
+         * be issued only when the device is in early suspend state.
+         *
+         * We can check that via USB Link State bits in DSTS register.
+         */
+        reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+
+        speed = reg & DWC3_DSTS_CONNECTSPD;
+        if (speed == DWC3_DSTS_SUPERSPEED) {
+                dev_dbg(dwc->dev, "no wakeup on SuperSpeed\n");
+                ret = -EINVAL;
+                goto out;
+        }
+
+        link_state = DWC3_DSTS_USBLNKST(reg);
+
+        switch (link_state) {
+        case DWC3_LINK_STATE_RX_DET:    /* in HS, means Early Suspend */
+        case DWC3_LINK_STATE_U3:        /* in HS, means SUSPEND */
+                break;
+        default:
+                dev_dbg(dwc->dev, "can't wakeup from link state %d\n",
+                                link_state);
+                ret = -EINVAL;
+                goto out;
+        }
+
+        reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+
+        /*
+         * Switch link state to Recovery. In HS/FS/LS this means
+         * RemoteWakeup Request
+         */
+        reg |= DWC3_DCTL_ULSTCHNG_RECOVERY;
+        dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+
+        /* wait for at least 2000us */
+        usleep_range(2000, 2500);
+
+        /* write zeroes to Link Change Request */
+        reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK;
+        dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+
+        /* pool until Link State change to ON */
+        timeout = jiffies + msecs_to_jiffies(100);
+
+        while (!(time_after(jiffies, timeout))) {
+                reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+
+                /* in HS, means ON */
+                if (DWC3_DSTS_USBLNKST(reg) == DWC3_LINK_STATE_U0)
+                        break;
+        }
+
+        if (DWC3_DSTS_USBLNKST(reg) != DWC3_LINK_STATE_U0) {
+                dev_err(dwc->dev, "failed to send remote wakeup\n");
+                ret = -EINVAL;
+        }
+
+out:
+        spin_unlock_irqrestore(&dwc->lock, flags);
+
+        return ret;
+}
+
+static int dwc3_gadget_set_selfpowered(struct usb_gadget *g,
+                int is_selfpowered)
+{
+        struct dwc3             *dwc = gadget_to_dwc(g);
+
+        dwc->is_selfpowered = !!is_selfpowered;
+
+        return 0;
+}
+
+static void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on)
+{
+        u32                     reg;
+        u32                     timeout = 500;
+
+        reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+        if (is_on)
+                reg |= DWC3_DCTL_RUN_STOP;
+        else
+                reg &= ~DWC3_DCTL_RUN_STOP;
+
+        dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+
+        do {
+                reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+                if (is_on) {
+                        if (!(reg & DWC3_DSTS_DEVCTRLHLT))
+                                break;
+                } else {
+                        if (reg & DWC3_DSTS_DEVCTRLHLT)
+                                break;
+                }
+                timeout--;
+                if (!timeout)
+                        break;
+                udelay(1);
+        } while (1);
+
+        dev_vdbg(dwc->dev, "gadget %s data soft-%s\n",
+                        dwc->gadget_driver
+                        ? dwc->gadget_driver->function : "no-function",
+                        is_on ? "connect" : "disconnect");
+}
+
+static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on)
+{
+        struct dwc3             *dwc = gadget_to_dwc(g);
+        unsigned long           flags;
+
+        is_on = !!is_on;
+
+        spin_lock_irqsave(&dwc->lock, flags);
+        dwc3_gadget_run_stop(dwc, is_on);
+        spin_unlock_irqrestore(&dwc->lock, flags);
+
+        return 0;
+}
+
+static int dwc3_gadget_start(struct usb_gadget *g,
+                struct usb_gadget_driver *driver)
+{
+        struct dwc3             *dwc = gadget_to_dwc(g);
+        struct dwc3_ep          *dep;
+        unsigned long           flags;
+        int                     ret = 0;
+        u32                     reg;
+
+        spin_lock_irqsave(&dwc->lock, flags);
+
+        if (dwc->gadget_driver) {
+                dev_err(dwc->dev, "%s is already bound to %s\n",
+                                dwc->gadget.name,
+                                dwc->gadget_driver->driver.name);
+                ret = -EBUSY;
+                goto err0;
+        }
+
+        dwc->gadget_driver      = driver;
+        dwc->gadget.dev.driver  = &driver->driver;
+
+        reg = dwc3_readl(dwc->regs, DWC3_GCTL);
+
+        reg &= ~DWC3_GCTL_SCALEDOWN(3);
+        reg &= ~DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG);
+        reg &= ~DWC3_GCTL_DISSCRAMBLE;
+        reg |= DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_DEVICE);
+
+        switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams0)) {
+        case DWC3_GHWPARAMS1_EN_PWROPT_CLK:
+                reg &= ~DWC3_GCTL_DSBLCLKGTNG;
+                break;
+        default:
+                dev_dbg(dwc->dev, "No power optimization available\n");
+        }
+
+        /*
+         * WORKAROUND: DWC3 revisions <1.90a have a bug
+         * when The device fails to connect at SuperSpeed
+         * and falls back to high-speed mode which causes
+         * the device to enter in a Connect/Disconnect loop
+         */
+        if (dwc->revision < DWC3_REVISION_190A)
+                reg |= DWC3_GCTL_U2RSTECN;
+
+        dwc3_writel(dwc->regs, DWC3_GCTL, reg);
+
+        reg = dwc3_readl(dwc->regs, DWC3_DCFG);
+        reg &= ~(DWC3_DCFG_SPEED_MASK);
+        reg |= DWC3_DCFG_SUPERSPEED;
+        dwc3_writel(dwc->regs, DWC3_DCFG, reg);
+
+        dwc->start_config_issued = false;
+
+        /* Start with SuperSpeed Default */
+        dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512);
+
+        dep = dwc->eps[0];
+        ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc);
+        if (ret) {
+                dev_err(dwc->dev, "failed to enable %s\n", dep->name);
+                goto err0;
+        }
+
+        dep = dwc->eps[1];
+        ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc);
+        if (ret) {
+                dev_err(dwc->dev, "failed to enable %s\n", dep->name);
+                goto err1;
+        }
+
+        /* begin to receive SETUP packets */
+        dwc->ep0state = EP0_SETUP_PHASE;
+        dwc3_ep0_out_start(dwc);
+
+        spin_unlock_irqrestore(&dwc->lock, flags);
+
+        return 0;
+
+err1:
+        __dwc3_gadget_ep_disable(dwc->eps[0]);
+
+err0:
+        spin_unlock_irqrestore(&dwc->lock, flags);
+
+        return ret;
+}
+
+static int dwc3_gadget_stop(struct usb_gadget *g,
+                struct usb_gadget_driver *driver)
+{
+        struct dwc3             *dwc = gadget_to_dwc(g);
+        unsigned long           flags;
+
+        spin_lock_irqsave(&dwc->lock, flags);
+
+        __dwc3_gadget_ep_disable(dwc->eps[0]);
+        __dwc3_gadget_ep_disable(dwc->eps[1]);
+
+        dwc->gadget_driver      = NULL;
+        dwc->gadget.dev.driver  = NULL;
+
+        spin_unlock_irqrestore(&dwc->lock, flags);
+
+        return 0;
+}
+static const struct usb_gadget_ops dwc3_gadget_ops = {
+        .get_frame              = dwc3_gadget_get_frame,
+        .wakeup                 = dwc3_gadget_wakeup,
+        .set_selfpowered        = dwc3_gadget_set_selfpowered,
+        .pullup                 = dwc3_gadget_pullup,
+        .udc_start              = dwc3_gadget_start,
+        .udc_stop               = dwc3_gadget_stop,
+};
+
+/* -------------------------------------------------------------------------- */
+
+static int __devinit dwc3_gadget_init_endpoints(struct dwc3 *dwc)
+{
+        struct dwc3_ep                  *dep;
+        u8                              epnum;
+
+        INIT_LIST_HEAD(&dwc->gadget.ep_list);
+
+        for (epnum = 0; epnum < DWC3_ENDPOINTS_NUM; epnum++) {
+                dep = kzalloc(sizeof(*dep), GFP_KERNEL);
+                if (!dep) {
+                        dev_err(dwc->dev, "can't allocate endpoint %d\n",
+                                        epnum);
+                        return -ENOMEM;
+                }
+
+                dep->dwc = dwc;
+                dep->number = epnum;
+                dwc->eps[epnum] = dep;
+
+                snprintf(dep->name, sizeof(dep->name), "ep%d%s", epnum >> 1,
+                                (epnum & 1) ? "in" : "out");
+                dep->endpoint.name = dep->name;
+                dep->direction = (epnum & 1);
+
+                if (epnum == 0 || epnum == 1) {
+                        dep->endpoint.maxpacket = 512;
+                        dep->endpoint.ops = &dwc3_gadget_ep0_ops;
+                        if (!epnum)
+                                dwc->gadget.ep0 = &dep->endpoint;
+                } else {
+                        int             ret;
+
+                        dep->endpoint.maxpacket = 1024;
+                        dep->endpoint.ops = &dwc3_gadget_ep_ops;
+                        list_add_tail(&dep->endpoint.ep_list,
+                                        &dwc->gadget.ep_list);
+
+                        ret = dwc3_alloc_trb_pool(dep);
+                        if (ret) {
+                                dev_err(dwc->dev, "%s: failed to allocate TRB pool\n", dep->name);
+                                return ret;
+                        }
+                }
+                INIT_LIST_HEAD(&dep->request_list);
+                INIT_LIST_HEAD(&dep->req_queued);
+        }
+
+        return 0;
+}
+
+static void dwc3_gadget_free_endpoints(struct dwc3 *dwc)
+{
+        struct dwc3_ep                  *dep;
+        u8                              epnum;
+
+        for (epnum = 0; epnum < DWC3_ENDPOINTS_NUM; epnum++) {
+                dep = dwc->eps[epnum];
+                dwc3_free_trb_pool(dep);
+
+                if (epnum != 0 && epnum != 1)
+                        list_del(&dep->endpoint.ep_list);
+
+                kfree(dep);
+        }
+}
+
+static void dwc3_gadget_release(struct device *dev)
+{
+        dev_dbg(dev, "%s\n", __func__);
+}
+
+/* -------------------------------------------------------------------------- */
+static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
+                const struct dwc3_event_depevt *event, int status)
+{
+        struct dwc3_request     *req;
+        struct dwc3_trb         trb;
+        unsigned int            count;
+        unsigned int            s_pkt = 0;
+
+        do {
+                req = next_request(&dep->req_queued);
+                if (!req)
+                        break;
+
+                dwc3_trb_to_nat(req->trb, &trb);
+
+                if (trb.hwo && status != -ESHUTDOWN)
+                        /*
+                         * We continue despite the error. There is not much we
+                         * can do. If we don't clean in up we loop for ever. If
+                         * we skip the TRB than it gets overwritten reused after
+                         * a while since we use them in a ring buffer. a BUG()
+                         * would help. Lets hope that if this occures, someone
+                         * fixes the root cause instead of looking away :)
+                         */
+                        dev_err(dwc->dev, "%s's TRB (%p) still owned by HW\n",
+                                        dep->name, req->trb);
+                count = trb.length;
+
+                if (dep->direction) {
+                        if (count) {
+                                dev_err(dwc->dev, "incomplete IN transfer %s\n",
+                                                dep->name);
+                                status = -ECONNRESET;
+                        }
+                } else {
+                        if (count && (event->status & DEPEVT_STATUS_SHORT))
+                                s_pkt = 1;
+                }
+
+                /*
+                 * We assume here we will always receive the entire data block
+                 * which we should receive. Meaning, if we program RX to
+                 * receive 4K but we receive only 2K, we assume that's all we
+                 * should receive and we simply bounce the request back to the
+                 * gadget driver for further processing.
+                 */
+                req->request.actual += req->request.length - count;
+                dwc3_gadget_giveback(dep, req, status);
+                if (s_pkt)
+                        break;
+                if ((event->status & DEPEVT_STATUS_LST) && trb.lst)
+                        break;
+                if ((event->status & DEPEVT_STATUS_IOC) && trb.ioc)
+                        break;
+        } while (1);
+
+        if ((event->status & DEPEVT_STATUS_IOC) && trb.ioc)
+                return 0;
+        return 1;
+}
+
+static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc,
+                struct dwc3_ep *dep, const struct dwc3_event_depevt *event,
+                int start_new)
+{
+        unsigned                status = 0;
+        int                     clean_busy;
+
+        if (event->status & DEPEVT_STATUS_BUSERR)
+                status = -ECONNRESET;
+
+        clean_busy =  dwc3_cleanup_done_reqs(dwc, dep, event, status);
+        if (clean_busy) {
+                dep->flags &= ~DWC3_EP_BUSY;
+                dep->res_trans_idx = 0;
+        }
+}
+
+static void dwc3_gadget_start_isoc(struct dwc3 *dwc,
+                struct dwc3_ep *dep, const struct dwc3_event_depevt *event)
+{
+        u32 uf;
+
+        if (list_empty(&dep->request_list)) {
+                dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n",
+                        dep->name);
+                return;
+        }
+
+        if (event->parameters) {
+                u32 mask;
+
+                mask = ~(dep->interval - 1);
+                uf = event->parameters & mask;
+                /* 4 micro frames in the future */
+                uf += dep->interval * 4;
+        } else {
+                uf = 0;
+        }
+
+        __dwc3_gadget_kick_transfer(dep, uf, 1);
+}
+
+static void dwc3_process_ep_cmd_complete(struct dwc3_ep *dep,
+                const struct dwc3_event_depevt *event)
+{
+        struct dwc3 *dwc = dep->dwc;
+        struct dwc3_event_depevt mod_ev = *event;
+
+        /*
+         * We were asked to remove one requests. It is possible that this
+         * request and a few other were started together and have the same
+         * transfer index. Since we stopped the complete endpoint we don't
+         * know how many requests were already completed (and not yet)
+         * reported and how could be done (later). We purge them all until
+         * the end of the list.
+         */
+        mod_ev.status = DEPEVT_STATUS_LST;
+        dwc3_cleanup_done_reqs(dwc, dep, &mod_ev, -ESHUTDOWN);
+        dep->flags &= ~DWC3_EP_BUSY;
+        /* pending requets are ignored and are queued on XferNotReady */
+}
+
+static void dwc3_ep_cmd_compl(struct dwc3_ep *dep,
+                const struct dwc3_event_depevt *event)
+{
+        u32 param = event->parameters;
+        u32 cmd_type = (param >> 8) & ((1 << 5) - 1);
+
+        switch (cmd_type) {
+        case DWC3_DEPCMD_ENDTRANSFER:
+                dwc3_process_ep_cmd_complete(dep, event);
+                break;
+        case DWC3_DEPCMD_STARTTRANSFER:
+                dep->res_trans_idx = param & 0x7f;
+                break;
+        default:
+                printk(KERN_ERR "%s() unknown /unexpected type: %d\n",
+                                __func__, cmd_type);
+                break;
+        };
+}
+
+static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
+                const struct dwc3_event_depevt *event)
+{
+        struct dwc3_ep          *dep;
+        u8                      epnum = event->endpoint_number;
+
+        dep = dwc->eps[epnum];
+
+        dev_vdbg(dwc->dev, "%s: %s\n", dep->name,
+                        dwc3_ep_event_string(event->endpoint_event));
+
+        if (epnum == 0 || epnum == 1) {
+                dwc3_ep0_interrupt(dwc, event);
+                return;
+        }
+
+        switch (event->endpoint_event) {
+        case DWC3_DEPEVT_XFERCOMPLETE:
+                if (usb_endpoint_xfer_isoc(dep->desc)) {
+                        dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n",
+                                        dep->name);
+                        return;
+                }
+
+                dwc3_endpoint_transfer_complete(dwc, dep, event, 1);
+                break;
+        case DWC3_DEPEVT_XFERINPROGRESS:
+                if (!usb_endpoint_xfer_isoc(dep->desc)) {
+                        dev_dbg(dwc->dev, "%s is not an Isochronous endpoint\n",
+                                        dep->name);
+                        return;
+                }
+
+                dwc3_endpoint_transfer_complete(dwc, dep, event, 0);
+                break;
+        case DWC3_DEPEVT_XFERNOTREADY:
+                if (usb_endpoint_xfer_isoc(dep->desc)) {
+                        dwc3_gadget_start_isoc(dwc, dep, event);
+                } else {
+                        int ret;
+
+                        dev_vdbg(dwc->dev, "%s: reason %s\n",
+                                        dep->name, event->status
+                                        ? "Transfer Active"
+                                        : "Transfer Not Active");
+
+                        ret = __dwc3_gadget_kick_transfer(dep, 0, 1);
+                        if (!ret || ret == -EBUSY)
+                                return;
+
+                        dev_dbg(dwc->dev, "%s: failed to kick transfers\n",
+                                        dep->name);
+                }
+
+                break;
+        case DWC3_DEPEVT_STREAMEVT:
+                if (!usb_endpoint_xfer_bulk(dep->desc)) {
+                        dev_err(dwc->dev, "Stream event for non-Bulk %s\n",
+                                        dep->name);
+                        return;
+                }
+
+                switch (event->status) {
+                case DEPEVT_STREAMEVT_FOUND:
+                        dev_vdbg(dwc->dev, "Stream %d found and started\n",
+                                        event->parameters);
+
+                        break;
+                case DEPEVT_STREAMEVT_NOTFOUND:
+                        /* FALLTHROUGH */
+                default:
+                        dev_dbg(dwc->dev, "Couldn't find suitable stream\n");
+                }
+                break;
+        case DWC3_DEPEVT_RXTXFIFOEVT:
+                dev_dbg(dwc->dev, "%s FIFO Overrun\n", dep->name);
+                break;
+        case DWC3_DEPEVT_EPCMDCMPLT:
+                dwc3_ep_cmd_compl(dep, event);
+                break;
+        }
+}
+
+static void dwc3_disconnect_gadget(struct dwc3 *dwc)
+{
+        if (dwc->gadget_driver && dwc->gadget_driver->disconnect) {
+                spin_unlock(&dwc->lock);
+                dwc->gadget_driver->disconnect(&dwc->gadget);
+                spin_lock(&dwc->lock);
+        }
+}
+
+static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum)
+{
+        struct dwc3_ep *dep;
+        struct dwc3_gadget_ep_cmd_params params;
+        u32 cmd;
+        int ret;
+
+        dep = dwc->eps[epnum];
+
+        WARN_ON(!dep->res_trans_idx);
+        if (dep->res_trans_idx) {
+                cmd = DWC3_DEPCMD_ENDTRANSFER;
+                cmd |= DWC3_DEPCMD_HIPRI_FORCERM | DWC3_DEPCMD_CMDIOC;
+                cmd |= DWC3_DEPCMD_PARAM(dep->res_trans_idx);
+                memset(&params, 0, sizeof(params));
+                ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, &params);
+                WARN_ON_ONCE(ret);
+                dep->res_trans_idx = 0;
+        }
+}
+
+static void dwc3_stop_active_transfers(struct dwc3 *dwc)
+{
+        u32 epnum;
+
+        for (epnum = 2; epnum < DWC3_ENDPOINTS_NUM; epnum++) {
+                struct dwc3_ep *dep;
+
+                dep = dwc->eps[epnum];
+                if (!(dep->flags & DWC3_EP_ENABLED))
+                        continue;
+
+                dwc3_remove_requests(dwc, dep);
+        }
+}
+
+static void dwc3_clear_stall_all_ep(struct dwc3 *dwc)
+{
+        u32 epnum;
+
+        for (epnum = 1; epnum < DWC3_ENDPOINTS_NUM; epnum++) {
+                struct dwc3_ep *dep;
+                struct dwc3_gadget_ep_cmd_params params;
+                int ret;
+
+                dep = dwc->eps[epnum];
+
+                if (!(dep->flags & DWC3_EP_STALL))
+                        continue;
+
+                dep->flags &= ~DWC3_EP_STALL;
+
+                memset(&params, 0, sizeof(params));
+                ret = dwc3_send_gadget_ep_cmd(dwc, dep->number,
+                                DWC3_DEPCMD_CLEARSTALL, &params);
+                WARN_ON_ONCE(ret);
+        }
+}
+
+static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc)
+{
+        dev_vdbg(dwc->dev, "%s\n", __func__);
+#if 0
+        XXX
+        U1/U2 is powersave optimization. Skip it for now. Anyway we need to
+        enable it before we can disable it.
+
+        reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+        reg &= ~DWC3_DCTL_INITU1ENA;
+        dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+
+        reg &= ~DWC3_DCTL_INITU2ENA;
+        dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+#endif
+
+        dwc3_stop_active_transfers(dwc);
+        dwc3_disconnect_gadget(dwc);
+        dwc->start_config_issued = false;
+
+        dwc->gadget.speed = USB_SPEED_UNKNOWN;
+}
+
+static void dwc3_gadget_usb3_phy_power(struct dwc3 *dwc, int on)
+{
+        u32                     reg;
+
+        reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
+
+        if (on)
+                reg &= ~DWC3_GUSB3PIPECTL_SUSPHY;
+        else
+                reg |= DWC3_GUSB3PIPECTL_SUSPHY;
+
+        dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
+}
+
+static void dwc3_gadget_usb2_phy_power(struct dwc3 *dwc, int on)
+{
+        u32                     reg;
+
+        reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
+
+        if (on)
+                reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
+        else
+                reg |= DWC3_GUSB2PHYCFG_SUSPHY;
+
+        dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
+}
+
+static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
+{
+        u32                     reg;
+
+        dev_vdbg(dwc->dev, "%s\n", __func__);
+
+        /* Enable PHYs */
+        dwc3_gadget_usb2_phy_power(dwc, true);
+        dwc3_gadget_usb3_phy_power(dwc, true);
+
+        if (dwc->gadget.speed != USB_SPEED_UNKNOWN)
+                dwc3_disconnect_gadget(dwc);
+
+        reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+        reg &= ~DWC3_DCTL_TSTCTRL_MASK;
+        dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+
+        dwc3_stop_active_transfers(dwc);
+        dwc3_clear_stall_all_ep(dwc);
+        dwc->start_config_issued = false;
+
+        /* Reset device address to zero */
+        reg = dwc3_readl(dwc->regs, DWC3_DCFG);
+        reg &= ~(DWC3_DCFG_DEVADDR_MASK);
+        dwc3_writel(dwc->regs, DWC3_DCFG, reg);
+}
+
+static void dwc3_update_ram_clk_sel(struct dwc3 *dwc, u32 speed)
+{
+        u32 reg;
+        u32 usb30_clock = DWC3_GCTL_CLK_BUS;
+
+        /*
+         * We change the clock only at SS but I dunno why I would want to do
+         * this. Maybe it becomes part of the power saving plan.
+         */
+
+        if (speed != DWC3_DSTS_SUPERSPEED)
+                return;
+
+        /*
+         * RAMClkSel is reset to 0 after USB reset, so it must be reprogrammed
+         * each time on Connect Done.
+         */
+        if (!usb30_clock)
+                return;
+
+        reg = dwc3_readl(dwc->regs, DWC3_GCTL);
+        reg |= DWC3_GCTL_RAMCLKSEL(usb30_clock);
+        dwc3_writel(dwc->regs, DWC3_GCTL, reg);
+}
+
+static void dwc3_gadget_disable_phy(struct dwc3 *dwc, u8 speed)
+{
+        switch (speed) {
+        case USB_SPEED_SUPER:
+                dwc3_gadget_usb2_phy_power(dwc, false);
+                break;
+        case USB_SPEED_HIGH:
+        case USB_SPEED_FULL:
+        case USB_SPEED_LOW:
+                dwc3_gadget_usb3_phy_power(dwc, false);
+                break;
+        }
+}
+
+static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc)
+{
+        struct dwc3_gadget_ep_cmd_params params;
+        struct dwc3_ep          *dep;
+        int                     ret;
+        u32                     reg;
+        u8                      speed;
+
+        dev_vdbg(dwc->dev, "%s\n", __func__);
+
+        memset(&params, 0x00, sizeof(params));
+
+        reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+        speed = reg & DWC3_DSTS_CONNECTSPD;
+        dwc->speed = speed;
+
+        dwc3_update_ram_clk_sel(dwc, speed);
+
+        switch (speed) {
+        case DWC3_DCFG_SUPERSPEED:
+                dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512);
+                dwc->gadget.ep0->maxpacket = 512;
+                dwc->gadget.speed = USB_SPEED_SUPER;
+                break;
+        case DWC3_DCFG_HIGHSPEED:
+                dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(64);
+                dwc->gadget.ep0->maxpacket = 64;
+                dwc->gadget.speed = USB_SPEED_HIGH;
+                break;
+        case DWC3_DCFG_FULLSPEED2:
+        case DWC3_DCFG_FULLSPEED1:
+                dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(64);
+                dwc->gadget.ep0->maxpacket = 64;
+                dwc->gadget.speed = USB_SPEED_FULL;
+                break;
+        case DWC3_DCFG_LOWSPEED:
+                dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(8);
+                dwc->gadget.ep0->maxpacket = 8;
+                dwc->gadget.speed = USB_SPEED_LOW;
+                break;
+        }
+
+        /* Disable unneded PHY */
+        dwc3_gadget_disable_phy(dwc, dwc->gadget.speed);
+
+        dep = dwc->eps[0];
+        ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc);
+        if (ret) {
+                dev_err(dwc->dev, "failed to enable %s\n", dep->name);
+                return;
+        }
+
+        dep = dwc->eps[1];
+        ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc);
+        if (ret) {
+                dev_err(dwc->dev, "failed to enable %s\n", dep->name);
+                return;
+        }
+
+        /*
+         * Configure PHY via GUSB3PIPECTLn if required.
+         *
+         * Update GTXFIFOSIZn
+         *
+         * In both cases reset values should be sufficient.
+         */
+}
+
+static void dwc3_gadget_wakeup_interrupt(struct dwc3 *dwc)
+{
+        dev_vdbg(dwc->dev, "%s\n", __func__);
+
+        /*
+         * TODO take core out of low power mode when that's
+         * implemented.
+         */
+
+        dwc->gadget_driver->resume(&dwc->gadget);
+}
+
+static void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc,
+                unsigned int evtinfo)
+{
+        /*  The fith bit says SuperSpeed yes or no. */
+        dwc->link_state = evtinfo & DWC3_LINK_STATE_MASK;
+
+        dev_vdbg(dwc->dev, "%s link %d\n", __func__, dwc->link_state);
+}
+
+static void dwc3_gadget_interrupt(struct dwc3 *dwc,
+                const struct dwc3_event_devt *event)
+{
+        switch (event->type) {
+        case DWC3_DEVICE_EVENT_DISCONNECT:
+                dwc3_gadget_disconnect_interrupt(dwc);
+                break;
+        case DWC3_DEVICE_EVENT_RESET:
+                dwc3_gadget_reset_interrupt(dwc);
+                break;
+        case DWC3_DEVICE_EVENT_CONNECT_DONE:
+                dwc3_gadget_conndone_interrupt(dwc);
+                break;
+        case DWC3_DEVICE_EVENT_WAKEUP:
+                dwc3_gadget_wakeup_interrupt(dwc);
+                break;
+        case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
+                dwc3_gadget_linksts_change_interrupt(dwc, event->event_info);
+                break;
+        case DWC3_DEVICE_EVENT_EOPF:
+                dev_vdbg(dwc->dev, "End of Periodic Frame\n");
+                break;
+        case DWC3_DEVICE_EVENT_SOF:
+                dev_vdbg(dwc->dev, "Start of Periodic Frame\n");
+                break;
+        case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
+                dev_vdbg(dwc->dev, "Erratic Error\n");
+                break;
+        case DWC3_DEVICE_EVENT_CMD_CMPL:
+                dev_vdbg(dwc->dev, "Command Complete\n");
+                break;
+        case DWC3_DEVICE_EVENT_OVERFLOW:
+                dev_vdbg(dwc->dev, "Overflow\n");
+                break;
+        default:
+                dev_dbg(dwc->dev, "UNKNOWN IRQ %d\n", event->type);
+        }
+}
+
+static void dwc3_process_event_entry(struct dwc3 *dwc,
+                const union dwc3_event *event)
+{
+        /* Endpoint IRQ, handle it and return early */
+        if (event->type.is_devspec == 0) {
+                /* depevt */
+                return dwc3_endpoint_interrupt(dwc, &event->depevt);
+        }
+
+        switch (event->type.type) {
+        case DWC3_EVENT_TYPE_DEV:
+                dwc3_gadget_interrupt(dwc, &event->devt);
+                break;
+        /* REVISIT what to do with Carkit and I2C events ? */
+        default:
+                dev_err(dwc->dev, "UNKNOWN IRQ type %d\n", event->raw);
+        }
+}
+
+static irqreturn_t dwc3_process_event_buf(struct dwc3 *dwc, u32 buf)
+{
+        struct dwc3_event_buffer *evt;
+        int left;
+        u32 count;
+
+        count = dwc3_readl(dwc->regs, DWC3_GEVNTCOUNT(buf));
+        count &= DWC3_GEVNTCOUNT_MASK;
+        if (!count)
+                return IRQ_NONE;
+
+        evt = dwc->ev_buffs[buf];
+        left = count;
+
+        while (left > 0) {
+                union dwc3_event event;
+
+                memcpy(&event.raw, (evt->buf + evt->lpos), sizeof(event.raw));
+                dwc3_process_event_entry(dwc, &event);
+                /*
+                 * XXX we wrap around correctly to the next entry as almost all
+                 * entries are 4 bytes in size. There is one entry which has 12
+                 * bytes which is a regular entry followed by 8 bytes data. ATM
+                 * I don't know how things are organized if were get next to the
+                 * a boundary so I worry about that once we try to handle that.
+                 */
+                evt->lpos = (evt->lpos + 4) % DWC3_EVENT_BUFFERS_SIZE;
+                left -= 4;
+
+                dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(buf), 4);
+        }
+
+        return IRQ_HANDLED;
+}
+
+static irqreturn_t dwc3_interrupt(int irq, void *_dwc)
+{
+        struct dwc3                     *dwc = _dwc;
+        int                             i;
+        irqreturn_t                     ret = IRQ_NONE;
+
+        spin_lock(&dwc->lock);
+
+        for (i = 0; i < DWC3_EVENT_BUFFERS_NUM; i++) {
+                irqreturn_t status;
+
+                status = dwc3_process_event_buf(dwc, i);
+                if (status == IRQ_HANDLED)
+                        ret = status;
+        }
+
+        spin_unlock(&dwc->lock);
+
+        return ret;
+}
+
+/**
+ * dwc3_gadget_init - Initializes gadget related registers
+ * @dwc: Pointer to out controller context structure
+ *
+ * Returns 0 on success otherwise negative errno.
+ */
+int __devinit dwc3_gadget_init(struct dwc3 *dwc)
+{
+        u32                                     reg;
+        int                                     ret;
+        int                                     irq;
+
+        dwc->ctrl_req = dma_alloc_coherent(dwc->dev, sizeof(*dwc->ctrl_req),
+                        &dwc->ctrl_req_addr, GFP_KERNEL);
+        if (!dwc->ctrl_req) {
+                dev_err(dwc->dev, "failed to allocate ctrl request\n");
+                ret = -ENOMEM;
+                goto err0;
+        }
+
+        dwc->ep0_trb = dma_alloc_coherent(dwc->dev, sizeof(*dwc->ep0_trb),
+                        &dwc->ep0_trb_addr, GFP_KERNEL);
+        if (!dwc->ep0_trb) {
+                dev_err(dwc->dev, "failed to allocate ep0 trb\n");
+                ret = -ENOMEM;
+                goto err1;
+        }
+
+        dwc->setup_buf = dma_alloc_coherent(dwc->dev,
+                        sizeof(*dwc->setup_buf) * 2,
+                        &dwc->setup_buf_addr, GFP_KERNEL);
+        if (!dwc->setup_buf) {
+                dev_err(dwc->dev, "failed to allocate setup buffer\n");
+                ret = -ENOMEM;
+                goto err2;
+        }
+
+        dwc->ep0_bounce = dma_alloc_coherent(dwc->dev,
+                        512, &dwc->ep0_bounce_addr, GFP_KERNEL);
+        if (!dwc->ep0_bounce) {
+                dev_err(dwc->dev, "failed to allocate ep0 bounce buffer\n");
+                ret = -ENOMEM;
+                goto err3;
+        }
+
+        dev_set_name(&dwc->gadget.dev, "gadget");
+
+        dwc->gadget.ops                 = &dwc3_gadget_ops;
+        dwc->gadget.is_dualspeed        = true;
+        dwc->gadget.speed               = USB_SPEED_UNKNOWN;
+        dwc->gadget.dev.parent          = dwc->dev;
+
+        dma_set_coherent_mask(&dwc->gadget.dev, dwc->dev->coherent_dma_mask);
+
+        dwc->gadget.dev.dma_parms       = dwc->dev->dma_parms;
+        dwc->gadget.dev.dma_mask        = dwc->dev->dma_mask;
+        dwc->gadget.dev.release         = dwc3_gadget_release;
+        dwc->gadget.name                = "dwc3-gadget";
+
+        /*
+         * REVISIT: Here we should clear all pending IRQs to be
+         * sure we're starting from a well known location.
+         */
+
+        ret = dwc3_gadget_init_endpoints(dwc);
+        if (ret)
+                goto err4;
+
+        irq = platform_get_irq(to_platform_device(dwc->dev), 0);
+
+        ret = request_irq(irq, dwc3_interrupt, IRQF_SHARED,
+                        "dwc3", dwc);
+        if (ret) {
+                dev_err(dwc->dev, "failed to request irq #%d --> %d\n",
+                                irq, ret);
+                goto err5;
+        }
+
+        /* Enable all but Start and End of Frame IRQs */
+        reg = (DWC3_DEVTEN_VNDRDEVTSTRCVEDEN |
+                        DWC3_DEVTEN_EVNTOVERFLOWEN |
+                        DWC3_DEVTEN_CMDCMPLTEN |
+                        DWC3_DEVTEN_ERRTICERREN |
+                        DWC3_DEVTEN_WKUPEVTEN |
+                        DWC3_DEVTEN_ULSTCNGEN |
+                        DWC3_DEVTEN_CONNECTDONEEN |
+                        DWC3_DEVTEN_USBRSTEN |
+                        DWC3_DEVTEN_DISCONNEVTEN);
+        dwc3_writel(dwc->regs, DWC3_DEVTEN, reg);
+
+        ret = device_register(&dwc->gadget.dev);
+        if (ret) {
+                dev_err(dwc->dev, "failed to register gadget device\n");
+                put_device(&dwc->gadget.dev);
+                goto err6;
+        }
+
+        ret = usb_add_gadget_udc(dwc->dev, &dwc->gadget);
+        if (ret) {
+                dev_err(dwc->dev, "failed to register udc\n");
+                goto err7;
+        }
+
+        return 0;
+
+err7:
+        device_unregister(&dwc->gadget.dev);
+
+err6:
+        dwc3_writel(dwc->regs, DWC3_DEVTEN, 0x00);
+        free_irq(irq, dwc);
+
+err5:
+        dwc3_gadget_free_endpoints(dwc);
+
+err4:
+        dma_free_coherent(dwc->dev, 512, dwc->ep0_bounce,
+                        dwc->ep0_bounce_addr);
+
+err3:
+        dma_free_coherent(dwc->dev, sizeof(*dwc->setup_buf) * 2,
+                        dwc->setup_buf, dwc->setup_buf_addr);
+
+err2:
+        dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb),
+                        dwc->ep0_trb, dwc->ep0_trb_addr);
+
+err1:
+        dma_free_coherent(dwc->dev, sizeof(*dwc->ctrl_req),
+                        dwc->ctrl_req, dwc->ctrl_req_addr);
+
+err0:
+        return ret;
+}
+
+void dwc3_gadget_exit(struct dwc3 *dwc)
+{
+        int                     irq;
+        int                     i;
+
+        usb_del_gadget_udc(&dwc->gadget);
+        irq = platform_get_irq(to_platform_device(dwc->dev), 0);
+
+        dwc3_writel(dwc->regs, DWC3_DEVTEN, 0x00);
+        free_irq(irq, dwc);
+
+        for (i = 0; i < ARRAY_SIZE(dwc->eps); i++)
+                __dwc3_gadget_ep_disable(dwc->eps[i]);
+
+        dwc3_gadget_free_endpoints(dwc);
+
+        dma_free_coherent(dwc->dev, 512, dwc->ep0_bounce,
+                        dwc->ep0_bounce_addr);
+
+        dma_free_coherent(dwc->dev, sizeof(*dwc->setup_buf) * 2,
+                        dwc->setup_buf, dwc->setup_buf_addr);
+
+        dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb),
+                        dwc->ep0_trb, dwc->ep0_trb_addr);
+
+        dma_free_coherent(dwc->dev, sizeof(*dwc->ctrl_req),
+                        dwc->ctrl_req, dwc->ctrl_req_addr);
+
+        device_unregister(&dwc->gadget.dev);
+}
diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h
new file mode 100644
index 000000000000..71145a449d99
--- /dev/null
+++ b/drivers/usb/dwc3/gadget.h
@@ -0,0 +1,211 @@
+/**
+ * gadget.h - DesignWare USB3 DRD Gadget Header
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@ti.com>,
+ *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __DRIVERS_USB_DWC3_GADGET_H
+#define __DRIVERS_USB_DWC3_GADGET_H
+
+#include <linux/list.h>
+#include <linux/usb/gadget.h>
+#include "io.h"
+
+struct dwc3;
+#define to_dwc3_ep(ep)          (container_of(ep, struct dwc3_ep, endpoint))
+#define gadget_to_dwc(g)        (container_of(g, struct dwc3, gadget))
+
+/* DEPCFG parameter 1 */
+#define DWC3_DEPCFG_INT_NUM(n)          ((n) << 0)
+#define DWC3_DEPCFG_XFER_COMPLETE_EN    (1 << 8)
+#define DWC3_DEPCFG_XFER_IN_PROGRESS_EN (1 << 9)
+#define DWC3_DEPCFG_XFER_NOT_READY_EN   (1 << 10)
+#define DWC3_DEPCFG_FIFO_ERROR_EN       (1 << 11)
+#define DWC3_DEPCFG_STREAM_EVENT_EN     (1 << 13)
+#define DWC3_DEPCFG_BINTERVAL_M1(n)     ((n) << 16)
+#define DWC3_DEPCFG_STREAM_CAPABLE      (1 << 24)
+#define DWC3_DEPCFG_EP_NUMBER(n)        ((n) << 25)
+#define DWC3_DEPCFG_BULK_BASED          (1 << 30)
+#define DWC3_DEPCFG_FIFO_BASED          (1 << 31)
+
+/* DEPCFG parameter 0 */
+#define DWC3_DEPCFG_EP_TYPE(n)          ((n) << 1)
+#define DWC3_DEPCFG_MAX_PACKET_SIZE(n)  ((n) << 3)
+#define DWC3_DEPCFG_FIFO_NUMBER(n)      ((n) << 17)
+#define DWC3_DEPCFG_BURST_SIZE(n)       ((n) << 22)
+#define DWC3_DEPCFG_DATA_SEQ_NUM(n)     ((n) << 26)
+#define DWC3_DEPCFG_IGN_SEQ_NUM         (1 << 31)
+
+/* DEPXFERCFG parameter 0 */
+#define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff)
+
+struct dwc3_gadget_ep_cmd_params {
+        u32     param2;
+        u32     param1;
+        u32     param0;
+};
+
+/* -------------------------------------------------------------------------- */
+
+struct dwc3_request {
+        struct usb_request      request;
+        struct list_head        list;
+        struct dwc3_ep          *dep;
+
+        u8                      epnum;
+        struct dwc3_trb_hw      *trb;
+        dma_addr_t              trb_dma;
+
+        unsigned                direction:1;
+        unsigned                mapped:1;
+        unsigned                queued:1;
+};
+#define to_dwc3_request(r)      (container_of(r, struct dwc3_request, request))
+
+static inline struct dwc3_request *next_request(struct list_head *list)
+{
+        if (list_empty(list))
+                return NULL;
+
+        return list_first_entry(list, struct dwc3_request, list);
+}
+
+static inline void dwc3_gadget_move_request_queued(struct dwc3_request *req)
+{
+        struct dwc3_ep          *dep = req->dep;
+
+        req->queued = true;
+        list_move_tail(&req->list, &dep->req_queued);
+}
+
+#if defined(CONFIG_USB_GADGET_DWC3) || defined(CONFIG_USB_GADGET_DWC3_MODULE)
+int dwc3_gadget_init(struct dwc3 *dwc);
+void dwc3_gadget_exit(struct dwc3 *dwc);
+#else
+static inline int dwc3_gadget_init(struct dwc3 *dwc) { return 0; }
+static inline void dwc3_gadget_exit(struct dwc3 *dwc) { }
+static inline int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
+                unsigned cmd, struct dwc3_gadget_ep_cmd_params *params)
+{
+        return 0;
+}
+#endif
+
+void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
+                int status);
+
+void dwc3_ep0_interrupt(struct dwc3 *dwc, const struct dwc3_event_depevt *event);
+void dwc3_ep0_out_start(struct dwc3 *dwc);
+int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
+                gfp_t gfp_flags);
+int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value);
+int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
+                unsigned cmd, struct dwc3_gadget_ep_cmd_params *params);
+void dwc3_map_buffer_to_dma(struct dwc3_request *req);
+void dwc3_unmap_buffer_from_dma(struct dwc3_request *req);
+
+/**
+ * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
+ * @dwc: DesignWare USB3 Pointer
+ * @number: DWC endpoint number
+ *
+ * Caller should take care of locking
+ */
+static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3 *dwc, u8 number)
+{
+        u32                     res_id;
+
+        res_id = dwc3_readl(dwc->regs, DWC3_DEPCMD(number));
+
+        return DWC3_DEPCMD_GET_RSC_IDX(res_id);
+}
+
+/**
+ * dwc3_gadget_event_string - returns event name
+ * @event: the event code
+ */
+static inline const char *dwc3_gadget_event_string(u8 event)
+{
+        switch (event) {
+        case DWC3_DEVICE_EVENT_DISCONNECT:
+                return "Disconnect";
+        case DWC3_DEVICE_EVENT_RESET:
+                return "Reset";
+        case DWC3_DEVICE_EVENT_CONNECT_DONE:
+                return "Connection Done";
+        case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
+                return "Link Status Change";
+        case DWC3_DEVICE_EVENT_WAKEUP:
+                return "WakeUp";
+        case DWC3_DEVICE_EVENT_EOPF:
+                return "End-Of-Frame";
+        case DWC3_DEVICE_EVENT_SOF:
+                return "Start-Of-Frame";
+        case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
+                return "Erratic Error";
+        case DWC3_DEVICE_EVENT_CMD_CMPL:
+                return "Command Complete";
+        case DWC3_DEVICE_EVENT_OVERFLOW:
+                return "Overflow";
+        }
+
+        return "UNKNOWN";
+}
+
+/**
+ * dwc3_ep_event_string - returns event name
+ * @event: then event code
+ */
+static inline const char *dwc3_ep_event_string(u8 event)
+{
+        switch (event) {
+        case DWC3_DEPEVT_XFERCOMPLETE:
+                return "Transfer Complete";
+        case DWC3_DEPEVT_XFERINPROGRESS:
+                return "Transfer In-Progress";
+        case DWC3_DEPEVT_XFERNOTREADY:
+                return "Transfer Not Ready";
+        case DWC3_DEPEVT_RXTXFIFOEVT:
+                return "FIFO";
+        case DWC3_DEPEVT_STREAMEVT:
+                return "Stream";
+        case DWC3_DEPEVT_EPCMDCMPLT:
+                return "Endpoint Command Complete";
+        }
+
+        return "UNKNOWN";
+}
+
+#endif /* __DRIVERS_USB_DWC3_GADGET_H */
diff --git a/drivers/usb/dwc3/io.h b/drivers/usb/dwc3/io.h
new file mode 100644
index 000000000000..bc957db1ea4b
--- /dev/null
+++ b/drivers/usb/dwc3/io.h
@@ -0,0 +1,54 @@
+/**
+ * io.h - DesignWare USB3 DRD IO Header
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@ti.com>,
+ *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __DRIVERS_USB_DWC3_IO_H
+#define __DRIVERS_USB_DWC3_IO_H
+
+#include <asm/io.h>
+
+static inline u32 dwc3_readl(void __iomem *base, u32 offset)
+{
+        return readl(base + offset);
+}
+
+static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value)
+{
+        writel(value, base + offset);
+}
+
+#endif /* __DRIVERS_USB_DWC3_IO_H */
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 5a084b9cfa3c..b21cd376c11a 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -96,6 +96,22 @@ config USB_GADGET_VBUS_DRAW
            This value will be used except for system-specific gadget
            drivers that have more specific information.
 
+config USB_GADGET_STORAGE_NUM_BUFFERS
+        int "Number of storage pipeline buffers"
+        range 2 4
+        default 2
+        help
+           Usually 2 buffers are enough to establish a good buffering
+           pipeline. The number may be increased in order to compensate
+           for a bursty VFS behaviour. For instance there may be CPU wake up
+           latencies that makes the VFS to appear bursty in a system with
+           an CPU on-demand governor. Especially if DMA is doing IO to
+           offload the CPU. In this case the CPU will go into power
+           save often and spin up occasionally to move data within VFS.
+           If selecting USB_GADGET_DEBUG_FILES this value may be set by
+           a module parameter as well.
+           If unsure, say 2.
+
 #
 # USB Peripheral Controller Support
 #
@@ -255,12 +271,11 @@ config USB_S3C_HSOTG
           integrated into the S3C64XX series SoC.
 
 config USB_IMX
-        tristate "Freescale IMX USB Peripheral Controller"
-        depends on ARCH_MX1
+        tristate "Freescale i.MX1 USB Peripheral Controller"
+        depends on ARCH_MXC
         help
-           Freescale's IMX series include an integrated full speed
-           USB 1.1 device controller.  The controller in the IMX series
-           is register-compatible.
+           Freescale's i.MX1 includes an integrated full speed
+           USB 1.1 device controller.
 
            It has Six fixed-function endpoints, as well as endpoint
            zero (for control transfers).
@@ -303,6 +318,18 @@ config USB_PXA_U2O
           PXA9xx Processor series include a high speed USB2.0 device
           controller, which support high speed and full speed USB peripheral.
 
+config USB_GADGET_DWC3
+        tristate "DesignWare USB3.0 (DRD) Controller"
+        depends on USB_DWC3
+        select USB_GADGET_DUALSPEED
+        select USB_GADGET_SUPERSPEED
+        help
+          DesignWare USB3.0 controller is a SuperSpeed USB3.0 Controller
+          which can be configured for peripheral-only, host-only, hub-only
+          and Dual-Role operation. This Controller was first integrated into
+          the OMAP5 series of processors. More information about the OMAP5
+          version of this controller, refer to http://www.ti.com/omap5.
+
 #
 # Controllers available in both integrated and discrete versions
 #
@@ -846,6 +873,16 @@ config USB_G_NOKIA
           It's only really useful for N900 hardware. If you're building
           a kernel for N900, say Y or M here. If unsure, say N.
 
+config USB_G_ACM_MS
+        tristate "CDC Composite Device (ACM and mass storage)"
+        depends on BLOCK
+        help
+          This driver provides two functions in one configuration:
+          a mass storage, and a CDC ACM (serial port) link.
+
+          Say "y" to link the driver statically, or "m" to build a
+          dynamically linked module called "g_acm_ms".
+
 config USB_G_MULTI
         tristate "Multifunction Composite Gadget (EXPERIMENTAL)"
         depends on BLOCK && NET
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 9ba725af4a08..b54ac6190890 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -28,7 +28,7 @@ obj-$(CONFIG_USB_S3C_HSUDC)	+= s3c-hsudc.o
 obj-$(CONFIG_USB_LANGWELL)      += langwell_udc.o
 obj-$(CONFIG_USB_EG20T)         += pch_udc.o
 obj-$(CONFIG_USB_PXA_U2O)       += mv_udc.o
-mv_udc-y                        := mv_udc_core.o mv_udc_phy.o
+mv_udc-y                        := mv_udc_core.o
 obj-$(CONFIG_USB_CI13XXX_MSM)   += ci13xxx_msm.o
 obj-$(CONFIG_USB_FUSB300)       += fusb300_udc.o
 
@@ -51,6 +51,7 @@ g_dbgp-y			:= dbgp.o
 g_nokia-y                       := nokia.o
 g_webcam-y                      := webcam.o
 g_ncm-y                         := ncm.o
+g_acm_ms-y                      := acm_ms.o
 
 obj-$(CONFIG_USB_ZERO)          += g_zero.o
 obj-$(CONFIG_USB_AUDIO)         += g_audio.o
@@ -69,3 +70,4 @@ obj-$(CONFIG_USB_G_MULTI)	+= g_multi.o
 obj-$(CONFIG_USB_G_NOKIA)       += g_nokia.o
 obj-$(CONFIG_USB_G_WEBCAM)      += g_webcam.o
 obj-$(CONFIG_USB_G_NCM)         += g_ncm.o
+obj-$(CONFIG_USB_G_ACM_MS)      += g_acm_ms.o
diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c
new file mode 100644
index 000000000000..fdb7aec3bd0c
--- /dev/null
+++ b/drivers/usb/gadget/acm_ms.c
@@ -0,0 +1,256 @@
+/*
+ * acm_ms.c -- Composite driver, with ACM and mass storage support
+ *
+ * Copyright (C) 2008 David Brownell
+ * Copyright (C) 2008 Nokia Corporation
+ * Author: David Brownell
+ * Modified: Klaus Schwarzkopf <schwarzkopf@sensortherm.de>
+ *
+ * Heavily based on multi.c and cdc2.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/utsname.h>
+
+#include "u_serial.h"
+
+#define DRIVER_DESC             "Composite Gadget (ACM + MS)"
+#define DRIVER_VERSION          "2011/10/10"
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * DO NOT REUSE THESE IDs with a protocol-incompatible driver!!  Ever!!
+ * Instead:  allocate your own, using normal USB-IF procedures.
+ */
+#define ACM_MS_VENDOR_NUM       0x1d6b  /* Linux Foundation */
+#define ACM_MS_PRODUCT_NUM      0x0106  /* Composite Gadget: ACM + MS*/
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Kbuild is not very cooperative with respect to linking separately
+ * compiled library objects into one module.  So for now we won't use
+ * separate compilation ... ensuring init/exit sections work to shrink
+ * the runtime footprint, and giving us at least some parts of what
+ * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
+ */
+
+#include "composite.c"
+#include "usbstring.c"
+#include "config.c"
+#include "epautoconf.c"
+#include "u_serial.c"
+#include "f_acm.c"
+#include "f_mass_storage.c"
+
+/*-------------------------------------------------------------------------*/
+
+static struct usb_device_descriptor device_desc = {
+        .bLength =              sizeof device_desc,
+        .bDescriptorType =      USB_DT_DEVICE,
+
+        .bcdUSB =               cpu_to_le16(0x0200),
+
+        .bDeviceClass =         USB_CLASS_MISC /* 0xEF */,
+        .bDeviceSubClass =      2,
+        .bDeviceProtocol =      1,
+
+        /* .bMaxPacketSize0 = f(hardware) */
+
+        /* Vendor and product id can be overridden by module parameters.  */
+        .idVendor =             cpu_to_le16(ACM_MS_VENDOR_NUM),
+        .idProduct =            cpu_to_le16(ACM_MS_PRODUCT_NUM),
+        /* .bcdDevice = f(hardware) */
+        /* .iManufacturer = DYNAMIC */
+        /* .iProduct = DYNAMIC */
+        /* NO SERIAL NUMBER */
+        /*.bNumConfigurations = DYNAMIC*/
+};
+
+static struct usb_otg_descriptor otg_descriptor = {
+        .bLength =              sizeof otg_descriptor,
+        .bDescriptorType =      USB_DT_OTG,
+
+        /*
+         * REVISIT SRP-only hardware is possible, although
+         * it would not be called "OTG" ...
+         */
+        .bmAttributes =         USB_OTG_SRP | USB_OTG_HNP,
+};
+
+static const struct usb_descriptor_header *otg_desc[] = {
+        (struct usb_descriptor_header *) &otg_descriptor,
+        NULL,
+};
+
+
+/* string IDs are assigned dynamically */
+
+#define STRING_MANUFACTURER_IDX         0
+#define STRING_PRODUCT_IDX              1
+
+static char manufacturer[50];
+
+static struct usb_string strings_dev[] = {
+        [STRING_MANUFACTURER_IDX].s = manufacturer,
+        [STRING_PRODUCT_IDX].s = DRIVER_DESC,
+        {  } /* end of list */
+};
+
+static struct usb_gadget_strings stringtab_dev = {
+        .language       = 0x0409,       /* en-us */
+        .strings        = strings_dev,
+};
+
+static struct usb_gadget_strings *dev_strings[] = {
+        &stringtab_dev,
+        NULL,
+};
+
+/****************************** Configurations ******************************/
+
+static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
+FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
+
+static struct fsg_common fsg_common;
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * We _always_ have both ACM and mass storage functions.
+ */
+static int __init acm_ms_do_config(struct usb_configuration *c)
+{
+        int     status;
+
+        if (gadget_is_otg(c->cdev->gadget)) {
+                c->descriptors = otg_desc;
+                c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
+        }
+
+
+        status = acm_bind_config(c, 0);
+        if (status < 0)
+                return status;
+
+        status = fsg_bind_config(c->cdev, c, &fsg_common);
+        if (status < 0)
+                return status;
+
+        return 0;
+}
+
+static struct usb_configuration acm_ms_config_driver = {
+        .label                  = DRIVER_DESC,
+        .bConfigurationValue    = 1,
+        /* .iConfiguration = DYNAMIC */
+        .bmAttributes           = USB_CONFIG_ATT_SELFPOWER,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int __init acm_ms_bind(struct usb_composite_dev *cdev)
+{
+        int                     gcnum;
+        struct usb_gadget       *gadget = cdev->gadget;
+        int                     status;
+        void                    *retp;
+
+        /* set up serial link layer */
+        status = gserial_setup(cdev->gadget, 1);
+        if (status < 0)
+                return status;
+
+        /* set up mass storage function */
+        retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data);
+        if (IS_ERR(retp)) {
+                status = PTR_ERR(retp);
+                goto fail0;
+        }
+
+        /* set bcdDevice */
+        gcnum = usb_gadget_controller_number(gadget);
+        if (gcnum >= 0) {
+                device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum);
+        } else {
+                WARNING(cdev, "controller '%s' not recognized; trying %s\n",
+                                gadget->name,
+                                acm_ms_config_driver.label);
+                device_desc.bcdDevice =
+                        cpu_to_le16(0x0300 | 0x0099);
+        }
+
+        /*
+         * Allocate string descriptor numbers ... note that string
+         * contents can be overridden by the composite_dev glue.
+         */
+
+        /* device descriptor strings: manufacturer, product */
+        snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
+                init_utsname()->sysname, init_utsname()->release,
+                gadget->name);
+        status = usb_string_id(cdev);
+        if (status < 0)
+                goto fail1;
+        strings_dev[STRING_MANUFACTURER_IDX].id = status;
+        device_desc.iManufacturer = status;
+
+        status = usb_string_id(cdev);
+        if (status < 0)
+                goto fail1;
+        strings_dev[STRING_PRODUCT_IDX].id = status;
+        device_desc.iProduct = status;
+
+        /* register our configuration */
+        status = usb_add_config(cdev, &acm_ms_config_driver, acm_ms_do_config);
+        if (status < 0)
+                goto fail1;
+
+        dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n",
+                        DRIVER_DESC);
+        fsg_common_put(&fsg_common);
+        return 0;
+
+        /* error recovery */
+fail1:
+        fsg_common_put(&fsg_common);
+fail0:
+        gserial_cleanup();
+        return status;
+}
+
+static int __exit acm_ms_unbind(struct usb_composite_dev *cdev)
+{
+        gserial_cleanup();
+
+        return 0;
+}
+
+static struct usb_composite_driver acm_ms_driver = {
+        .name           = "g_acm_ms",
+        .dev            = &device_desc,
+        .strings        = dev_strings,
+        .unbind         = __exit_p(acm_ms_unbind),
+};
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Klaus Schwarzkopf <schwarzkopf@sensortherm.de>");
+MODULE_LICENSE("GPL v2");
+
+static int __init init(void)
+{
+        return usb_composite_probe(&acm_ms_driver, acm_ms_bind);
+}
+module_init(init);
+
+static void __exit cleanup(void)
+{
+        usb_composite_unregister(&acm_ms_driver);
+}
+module_exit(cleanup);
diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c
index 70f2b376c86d..4730016d7cd4 100644
--- a/drivers/usb/gadget/amd5536udc.c
+++ b/drivers/usb/gadget/amd5536udc.c
@@ -8,15 +8,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 /*
@@ -354,7 +345,7 @@ udc_ep_enable(struct usb_ep *usbep, const struct usb_endpoint_descriptor *desc)
         writel(tmp, &dev->ep[ep->num].regs->ctl);
 
         /* set max packet size */
-        maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+        maxpacket = usb_endpoint_maxp(desc);
         tmp = readl(&dev->ep[ep->num].regs->bufout_maxpkt);
         tmp = AMD_ADDBITS(tmp, maxpacket, UDC_EP_MAX_PKT_SIZE);
         ep->ep.maxpacket = maxpacket;
@@ -3014,13 +3005,8 @@ __acquires(dev->lock)
 
                 /* link up all endpoints */
                 udc_setup_endpoints(dev);
-                if (dev->gadget.speed == USB_SPEED_HIGH) {
-                        dev_info(&dev->pdev->dev, "Connect: speed = %s\n",
-                                "high");
-                } else if (dev->gadget.speed == USB_SPEED_FULL) {
-                        dev_info(&dev->pdev->dev, "Connect: speed = %s\n",
-                                "full");
-                }
+                dev_info(&dev->pdev->dev, "Connect: %s\n",
+                         usb_speed_string(dev->gadget.speed));
 
                 /* init ep 0 */
                 activate_control_endpoints(dev);
diff --git a/drivers/usb/gadget/amd5536udc.h b/drivers/usb/gadget/amd5536udc.h
index 1d1c7543468e..f87e29c65325 100644
--- a/drivers/usb/gadget/amd5536udc.h
+++ b/drivers/usb/gadget/amd5536udc.h
@@ -8,15 +8,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef AMD5536UDC_H
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index ddb118a76807..8efe0fa9228d 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -9,16 +9,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA  02111-1307, USA.
  */
 
 #undef  VERBOSE_DEBUG
@@ -460,7 +450,7 @@ static void nuke(struct at91_ep *ep, int status)
 {
         struct at91_request *req;
 
-        // terminer chaque requete dans la queue
+        /* terminate any request in the queue */
         ep->stopped = 1;
         if (list_empty(&ep->queue))
                 return;
@@ -487,7 +477,7 @@ static int at91_ep_enable(struct usb_ep *_ep,
                         || !desc || ep->desc
                         || _ep->name == ep0name
                         || desc->bDescriptorType != USB_DT_ENDPOINT
-                        || (maxpacket = le16_to_cpu(desc->wMaxPacketSize)) == 0
+                        || (maxpacket = usb_endpoint_maxp(desc)) == 0
                         || maxpacket > ep->maxpacket) {
                 DBG("bad ep or descriptor\n");
                 return -EINVAL;
@@ -788,7 +778,7 @@ static const struct usb_ep_ops at91_ep_ops = {
         .queue          = at91_ep_queue,
         .dequeue        = at91_ep_dequeue,
         .set_halt       = at91_ep_set_halt,
-        // there's only imprecise fifo status reporting
+        /* there's only imprecise fifo status reporting */
 };
 
 /*-------------------------------------------------------------------------*/
@@ -846,7 +836,7 @@ static void udc_reinit(struct at91_udc *udc)
                 ep->fifo_bank = 0;
                 ep->ep.maxpacket = ep->maxpacket;
                 ep->creg = (void __iomem *) udc->udp_baseaddr + AT91_UDP_CSR(i);
-                // initialiser une queue par endpoint
+                /* initialize one queue per endpoint */
                 INIT_LIST_HEAD(&ep->queue);
         }
 }
@@ -952,7 +942,7 @@ static int at91_vbus_session(struct usb_gadget *gadget, int is_active)
         struct at91_udc *udc = to_udc(gadget);
         unsigned long   flags;
 
-        // VDBG("vbus %s\n", is_active ? "on" : "off");
+        /* VDBG("vbus %s\n", is_active ? "on" : "off"); */
         spin_lock_irqsave(&udc->lock, flags);
         udc->vbus = (is_active != 0);
         if (udc->driver)
@@ -1003,7 +993,7 @@ static const struct usb_gadget_ops at91_udc_ops = {
          * VBUS-powered devices may also also want to support bigger
          * power budgets after an appropriate SET_CONFIGURATION.
          */
-        // .vbus_power          = at91_vbus_power,
+        /* .vbus_power          = at91_vbus_power, */
 };
 
 /*-------------------------------------------------------------------------*/
@@ -1072,7 +1062,7 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr)
                         ep->is_in = 0;
                 }
         } else {
-                // REVISIT this happens sometimes under load; why??
+                /* REVISIT this happens sometimes under load; why?? */
                 ERR("SETUP len %d, csr %08x\n", rxcount, csr);
                 status = -EINVAL;
         }
@@ -1451,7 +1441,7 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
                         at91_udp_write(udc, AT91_UDP_IDR, AT91_UDP_RXSUSP);
                         at91_udp_write(udc, AT91_UDP_IER, AT91_UDP_RXRSM);
                         at91_udp_write(udc, AT91_UDP_ICR, AT91_UDP_RXSUSP);
-                        // VDBG("bus suspend\n");
+                        /* VDBG("bus suspend\n"); */
                         if (udc->suspended)
                                 continue;
                         udc->suspended = 1;
@@ -1473,7 +1463,7 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
                         at91_udp_write(udc, AT91_UDP_IDR, AT91_UDP_RXRSM);
                         at91_udp_write(udc, AT91_UDP_IER, AT91_UDP_RXSUSP);
                         at91_udp_write(udc, AT91_UDP_ICR, AT91_UDP_RXRSM);
-                        // VDBG("bus resume\n");
+                        /* VDBG("bus resume\n"); */
                         if (!udc->suspended)
                                 continue;
                         udc->suspended = 0;
@@ -1820,7 +1810,7 @@ static int __init at91udc_probe(struct platform_device *pdev)
         /* request UDC and maybe VBUS irqs */
         udc->udp_irq = platform_get_irq(pdev, 0);
         retval = request_irq(udc->udp_irq, at91_udc_irq,
-                        IRQF_DISABLED, driver_name, udc);
+                        0, driver_name, udc);
         if (retval < 0) {
                 DBG("request irq %d failed\n", udc->udp_irq);
                 goto fail1;
@@ -1848,7 +1838,7 @@ static int __init at91udc_probe(struct platform_device *pdev)
                                   jiffies + VBUS_POLL_TIMEOUT);
                 } else {
                         if (request_irq(udc->board.vbus_pin, at91_vbus_irq,
-                                        IRQF_DISABLED, driver_name, udc)) {
+                                        0, driver_name, udc)) {
                                 DBG("request vbus irq %d failed\n",
                                     udc->board.vbus_pin);
                                 retval = -EBUSY;
diff --git a/drivers/usb/gadget/at91_udc.h b/drivers/usb/gadget/at91_udc.h
index 108ca54f9092..3c0315b86ace 100644
--- a/drivers/usb/gadget/at91_udc.h
+++ b/drivers/usb/gadget/at91_udc.h
@@ -7,16 +7,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the
- * Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 
 #ifndef AT91_UDC_H
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index 5b1665eb1bef..271a9d873608 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -527,7 +527,7 @@ usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
 
         DBG(DBG_GADGET, "%s: ep_enable: desc=%p\n", ep->ep.name, desc);
 
-        maxpacket = le16_to_cpu(desc->wMaxPacketSize) & 0x7ff;
+        maxpacket = usb_endpoint_maxp(desc) & 0x7ff;
 
         if (((desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK) != ep->index)
                         || ep->index == 0
@@ -571,7 +571,7 @@ usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
                  * Bits 11:12 specify number of _additional_
                  * transactions per microframe.
                  */
-                nr_trans = ((le16_to_cpu(desc->wMaxPacketSize) >> 11) & 3) + 1;
+                nr_trans = ((usb_endpoint_maxp(desc) >> 11) & 3) + 1;
                 if (nr_trans > 3)
                         return -EINVAL;
 
@@ -1718,13 +1718,12 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
                         spin_lock(&udc->lock);
                 }
 
-                if (status & USBA_HIGH_SPEED) {
-                        DBG(DBG_BUS, "High-speed bus reset detected\n");
+                if (status & USBA_HIGH_SPEED)
                         udc->gadget.speed = USB_SPEED_HIGH;
-                } else {
-                        DBG(DBG_BUS, "Full-speed bus reset detected\n");
+                else
                         udc->gadget.speed = USB_SPEED_FULL;
-                }
+                DBG(DBG_BUS, "%s bus reset detected\n",
+                    usb_speed_string(udc->gadget.speed));
 
                 ep0 = &usba_ep[0];
                 ep0->desc = &usba_ep0_desc;
diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c
index b1c1afbb8750..672674c2fb3d 100644
--- a/drivers/usb/gadget/cdc2.c
+++ b/drivers/usb/gadget/cdc2.c
@@ -8,15 +8,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/usb/gadget/ci13xxx_msm.c b/drivers/usb/gadget/ci13xxx_msm.c
index 470981ad6f77..4eedfe557154 100644
--- a/drivers/usb/gadget/ci13xxx_msm.c
+++ b/drivers/usb/gadget/ci13xxx_msm.c
@@ -3,17 +3,6 @@
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
  * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
  */
 
 #include <linux/module.h>
diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c
index 1265a8502ea0..83428f56253b 100644
--- a/drivers/usb/gadget/ci13xxx_udc.c
+++ b/drivers/usb/gadget/ci13xxx_udc.c
@@ -2101,7 +2101,7 @@ static int ep_enable(struct usb_ep *ep,
         mEp->num  = usb_endpoint_num(desc);
         mEp->type = usb_endpoint_type(desc);
 
-        mEp->ep.maxpacket = __constant_le16_to_cpu(desc->wMaxPacketSize);
+        mEp->ep.maxpacket = usb_endpoint_maxp(desc);
 
         dbg_event(_usb_addr(mEp), "ENABLE", 0);
 
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index aef47414f5d5..8a5529d214fb 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -7,15 +7,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 /* #define VERBOSE_DEBUG */
@@ -164,7 +155,7 @@ int config_ep_by_speed(struct usb_gadget *g,
 
 ep_found:
         /* commit results */
-        _ep->maxpacket = le16_to_cpu(chosen_desc->wMaxPacketSize);
+        _ep->maxpacket = usb_endpoint_maxp(chosen_desc);
         _ep->desc = chosen_desc;
         _ep->comp_desc = NULL;
         _ep->maxburst = 0;
@@ -551,9 +542,9 @@ static int bos_desc(struct usb_composite_dev *cdev)
         if (cdev->gadget->ops->get_config_params)
                 cdev->gadget->ops->get_config_params(&dcd_config_params);
         else {
-                dcd_config_params.bU1devExitLat = USB_DEFULT_U1_DEV_EXIT_LAT;
+                dcd_config_params.bU1devExitLat = USB_DEFAULT_U1_DEV_EXIT_LAT;
                 dcd_config_params.bU2DevExitLat =
-                        cpu_to_le16(USB_DEFULT_U2_DEV_EXIT_LAT);
+                        cpu_to_le16(USB_DEFAULT_U2_DEV_EXIT_LAT);
         }
         ss_cap->bU1devExitLat = dcd_config_params.bU1devExitLat;
         ss_cap->bU2DevExitLat = dcd_config_params.bU2DevExitLat;
@@ -626,25 +617,9 @@ static int set_config(struct usb_composite_dev *cdev,
                 result = 0;
         }
 
-        INFO(cdev, "%s speed config #%d: %s\n",
-                ({ char *speed;
-                switch (gadget->speed) {
-                case USB_SPEED_LOW:
-                        speed = "low";
-                        break;
-                case USB_SPEED_FULL:
-                        speed = "full";
-                        break;
-                case USB_SPEED_HIGH:
-                        speed = "high";
-                        break;
-                case USB_SPEED_SUPER:
-                        speed = "super";
-                        break;
-                default:
-                        speed = "?";
-                        break;
-                } ; speed; }), number, c ? c->label : "unconfigured");
+        INFO(cdev, "%s config #%d: %s\n",
+             usb_speed_string(gadget->speed),
+             number, c ? c->label : "unconfigured");
 
         if (!c)
                 goto done;
diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c
index b2c001334876..7542a72ce51a 100644
--- a/drivers/usb/gadget/config.c
+++ b/drivers/usb/gadget/config.c
@@ -7,15 +7,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/errno.h>
diff --git a/drivers/usb/gadget/dbgp.c b/drivers/usb/gadget/dbgp.c
index 8beefdd36787..f855ecf7a637 100644
--- a/drivers/usb/gadget/dbgp.c
+++ b/drivers/usb/gadget/dbgp.c
@@ -4,7 +4,6 @@
  * Copyright (C) 2010 Stephane Duverger
  *
  * Released under the GPLv2.
- *
  */
 
 /* verbose messages */
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index e755a9d267fc..ab8f1b488d54 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -10,15 +10,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 
@@ -439,7 +430,7 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
          * maximum packet size.
          * For SS devices the wMaxPacketSize is limited by 1024.
          */
-        max = le16_to_cpu(desc->wMaxPacketSize) & 0x7ff;
+        max = usb_endpoint_maxp(desc) & 0x7ff;
 
         /* drivers must not request bad settings, since lower levels
          * (hardware or its drivers) may not check.  some endpoints
@@ -1277,7 +1268,7 @@ static int periodic_bytes (struct dummy *dum, struct dummy_ep *ep)
                 int     tmp;
 
                 /* high bandwidth mode */
-                tmp = le16_to_cpu(ep->desc->wMaxPacketSize);
+                tmp = usb_endpoint_maxp(ep->desc);
                 tmp = (tmp >> 11) & 0x03;
                 tmp *= 8 /* applies to entire frame */;
                 limit += limit * tmp;
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c
index 7a7e6b7e1fd6..596a0b464e61 100644
--- a/drivers/usb/gadget/epautoconf.c
+++ b/drivers/usb/gadget/epautoconf.c
@@ -7,16 +7,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  */
 
 #include <linux/kernel.h>
@@ -158,7 +148,7 @@ ep_matches (
          * where it's an output parameter representing the full speed limit.
          * the usb spec fixes high speed bulk maxpacket at 512 bytes.
          */
-        max = 0x7ff & le16_to_cpu(desc->wMaxPacketSize);
+        max = 0x7ff & usb_endpoint_maxp(desc);
         switch (type) {
         case USB_ENDPOINT_XFER_INT:
                 /* INT:  limit 64 bytes full speed, 1024 high/super speed */
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index aafc84f33e26..0cd764d59351 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -9,15 +9,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 /* #define VERBOSE_DEBUG */
diff --git a/drivers/usb/gadget/f_audio.c b/drivers/usb/gadget/f_audio.c
index a9a4eade7e80..ec7ffcd0d0cd 100644
--- a/drivers/usb/gadget/f_audio.c
+++ b/drivers/usb/gadget/f_audio.c
@@ -460,7 +460,7 @@ static int audio_set_endpoint_req(struct usb_function *f,
 
         switch (ctrl->bRequest) {
         case UAC_SET_CUR:
-                value = 0;
+                value = len;
                 break;
 
         case UAC_SET_MIN:
@@ -499,7 +499,7 @@ static int audio_get_endpoint_req(struct usb_function *f,
         case UAC_GET_MIN:
         case UAC_GET_MAX:
         case UAC_GET_RES:
-                value = 3;
+                value = len;
                 break;
         case UAC_GET_MEM:
                 break;
@@ -681,17 +681,18 @@ f_audio_bind(struct usb_configuration *c, struct usb_function *f)
 
         status = -ENOMEM;
 
-        /* supcard all relevant hardware speeds... we expect that when
+        /* copy descriptors, and track endpoint copies */
+        f->descriptors = usb_copy_descriptors(f_audio_desc);
+
+        /*
+         * support all relevant hardware speeds... we expect that when
          * hardware is dual speed, all bulk-capable endpoints work at
          * both speeds
          */
-
-        /* copy descriptors, and track endpoint copies */
         if (gadget_is_dualspeed(c->cdev->gadget)) {
                 c->highspeed = true;
                 f->hs_descriptors = usb_copy_descriptors(f_audio_desc);
-        } else
-                f->descriptors = usb_copy_descriptors(f_audio_desc);
+        }
 
         return 0;
 
diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c
index 3691a0cb9465..11c07cb7d337 100644
--- a/drivers/usb/gadget/f_ecm.c
+++ b/drivers/usb/gadget/f_ecm.c
@@ -8,15 +8,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 /* #define VERBOSE_DEBUG */
diff --git a/drivers/usb/gadget/f_eem.c b/drivers/usb/gadget/f_eem.c
index 046c6d0e6960..1a7b2dd7d408 100644
--- a/drivers/usb/gadget/f_eem.c
+++ b/drivers/usb/gadget/f_eem.c
@@ -9,15 +9,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index c161a9aaeb7e..6b1c20b6c9b2 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -12,15 +12,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 
diff --git a/drivers/usb/gadget/f_hid.c b/drivers/usb/gadget/f_hid.c
index 83a266bdb40e..b2113420b806 100644
--- a/drivers/usb/gadget/f_hid.c
+++ b/drivers/usb/gadget/f_hid.c
@@ -7,15 +7,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/usb/gadget/f_loopback.c b/drivers/usb/gadget/f_loopback.c
index ca660d40b11a..6d87f288df4e 100644
--- a/drivers/usb/gadget/f_loopback.c
+++ b/drivers/usb/gadget/f_loopback.c
@@ -8,15 +8,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 /* #define VERBOSE_DEBUG */
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index 5b9339582007..52583a235330 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -112,8 +112,7 @@
  * is not loaded (an empty string as "filename" in the fsg_config
  * structure causes error).  The CD-ROM emulation includes a single
  * data track and no audio tracks; hence there need be only one
- * backing file per LUN.  Note also that the CD-ROM block length is
- * set to 512 rather than the more common value 2048.
+ * backing file per LUN.
  *
  *
  * MSF includes support for module parameters.  If gadget using it
@@ -363,7 +362,7 @@ struct fsg_common {
 
         struct fsg_buffhd       *next_buffhd_to_fill;
         struct fsg_buffhd       *next_buffhd_to_drain;
-        struct fsg_buffhd       buffhds[FSG_NUM_BUFFERS];
+        struct fsg_buffhd       *buffhds;
 
         int                     cmnd_size;
         u8                      cmnd[MAX_COMMAND_SIZE];
@@ -745,7 +744,6 @@ static int do_read(struct fsg_common *common)
         u32                     amount_left;
         loff_t                  file_offset, file_offset_tmp;
         unsigned int            amount;
-        unsigned int            partial_page;
         ssize_t                 nread;
 
         /*
@@ -771,7 +769,7 @@ static int do_read(struct fsg_common *common)
                 curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
                 return -EINVAL;
         }
-        file_offset = ((loff_t) lba) << 9;
+        file_offset = ((loff_t) lba) << curlun->blkbits;
 
         /* Carry out the file reads */
         amount_left = common->data_size_from_cmnd;
@@ -784,18 +782,10 @@ static int do_read(struct fsg_common *common)
                  * Try to read the remaining amount.
                  * But don't read more than the buffer size.
                  * And don't try to read past the end of the file.
-                 * Finally, if we're not at a page boundary, don't read past
-                 *      the next page.
-                 * If this means reading 0 then we were asked to read past
-                 *      the end of file.
                  */
                 amount = min(amount_left, FSG_BUFLEN);
                 amount = min((loff_t)amount,
                              curlun->file_length - file_offset);
-                partial_page = file_offset & (PAGE_CACHE_SIZE - 1);
-                if (partial_page > 0)
-                        amount = min(amount, (unsigned int)PAGE_CACHE_SIZE -
-                                             partial_page);
 
                 /* Wait for the next buffer to become available */
                 bh = common->next_buffhd_to_fill;
@@ -812,7 +802,8 @@ static int do_read(struct fsg_common *common)
                 if (amount == 0) {
                         curlun->sense_data =
                                         SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
-                        curlun->sense_data_info = file_offset >> 9;
+                        curlun->sense_data_info =
+                                        file_offset >> curlun->blkbits;
                         curlun->info_valid = 1;
                         bh->inreq->length = 0;
                         bh->state = BUF_STATE_FULL;
@@ -835,18 +826,25 @@ static int do_read(struct fsg_common *common)
                 } else if (nread < amount) {
                         LDBG(curlun, "partial file read: %d/%u\n",
                              (int)nread, amount);
-                        nread -= (nread & 511); /* Round down to a block */
+                        nread = round_down(nread, curlun->blksize);
                 }
                 file_offset  += nread;
                 amount_left  -= nread;
                 common->residue -= nread;
+
+                /*
+                 * Except at the end of the transfer, nread will be
+                 * equal to the buffer size, which is divisible by the
+                 * bulk-in maxpacket size.
+                 */
                 bh->inreq->length = nread;
                 bh->state = BUF_STATE_FULL;
 
                 /* If an error occurred, report it and its position */
                 if (nread < amount) {
                         curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
-                        curlun->sense_data_info = file_offset >> 9;
+                        curlun->sense_data_info =
+                                        file_offset >> curlun->blkbits;
                         curlun->info_valid = 1;
                         break;
                 }
@@ -877,7 +875,6 @@ static int do_write(struct fsg_common *common)
         u32                     amount_left_to_req, amount_left_to_write;
         loff_t                  usb_offset, file_offset, file_offset_tmp;
         unsigned int            amount;
-        unsigned int            partial_page;
         ssize_t                 nwritten;
         int                     rc;
 
@@ -921,7 +918,7 @@ static int do_write(struct fsg_common *common)
 
         /* Carry out the file writes */
         get_some_more = 1;
-        file_offset = usb_offset = ((loff_t) lba) << 9;
+        file_offset = usb_offset = ((loff_t) lba) << curlun->blkbits;
         amount_left_to_req = common->data_size_from_cmnd;
         amount_left_to_write = common->data_size_from_cmnd;
 
@@ -933,41 +930,21 @@ static int do_write(struct fsg_common *common)
 
                         /*
                          * Figure out how much we want to get:
-                         * Try to get the remaining amount.
-                         * But don't get more than the buffer size.
-                         * And don't try to go past the end of the file.
-                         * If we're not at a page boundary,
-                         *      don't go past the next page.
-                         * If this means getting 0, then we were asked
-                         *      to write past the end of file.
-                         * Finally, round down to a block boundary.
+                         * Try to get the remaining amount,
+                         * but not more than the buffer size.
                          */
                         amount = min(amount_left_to_req, FSG_BUFLEN);
-                        amount = min((loff_t)amount,
-                                     curlun->file_length - usb_offset);
-                        partial_page = usb_offset & (PAGE_CACHE_SIZE - 1);
-                        if (partial_page > 0)
-                                amount = min(amount,
-        (unsigned int)PAGE_CACHE_SIZE - partial_page);
-
-                        if (amount == 0) {
+
+                        /* Beyond the end of the backing file? */
+                        if (usb_offset >= curlun->file_length) {
                                 get_some_more = 0;
                                 curlun->sense_data =
                                         SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
-                                curlun->sense_data_info = usb_offset >> 9;
+                                curlun->sense_data_info =
+                                        usb_offset >> curlun->blkbits;
                                 curlun->info_valid = 1;
                                 continue;
                         }
-                        amount -= amount & 511;
-                        if (amount == 0) {
-
-                                /*
-                                 * Why were we were asked to transfer a
-                                 * partial block?
-                                 */
-                                get_some_more = 0;
-                                continue;
-                        }
 
                         /* Get the next buffer */
                         usb_offset += amount;
@@ -977,12 +954,11 @@ static int do_write(struct fsg_common *common)
                                 get_some_more = 0;
 
                         /*
-                         * amount is always divisible by 512, hence by
-                         * the bulk-out maxpacket size
+                         * Except at the end of the transfer, amount will be
+                         * equal to the buffer size, which is divisible by
+                         * the bulk-out maxpacket size.
                          */
-                        bh->outreq->length = amount;
-                        bh->bulk_out_intended_length = amount;
-                        bh->outreq->short_not_ok = 1;
+                        set_bulk_out_req_length(common, bh, amount);
                         if (!start_out_transfer(common, bh))
                                 /* Dunno what to do if common->fsg is NULL */
                                 return -EIO;
@@ -1002,7 +978,8 @@ static int do_write(struct fsg_common *common)
                         /* Did something go wrong with the transfer? */
                         if (bh->outreq->status != 0) {
                                 curlun->sense_data = SS_COMMUNICATION_FAILURE;
-                                curlun->sense_data_info = file_offset >> 9;
+                                curlun->sense_data_info =
+                                        file_offset >> curlun->blkbits;
                                 curlun->info_valid = 1;
                                 break;
                         }
@@ -1016,6 +993,16 @@ static int do_write(struct fsg_common *common)
                                 amount = curlun->file_length - file_offset;
                         }
 
+                        /* Don't accept excess data.  The spec doesn't say
+                         * what to do in this case.  We'll ignore the error.
+                         */
+                        amount = min(amount, bh->bulk_out_intended_length);
+
+                        /* Don't write a partial block */
+                        amount = round_down(amount, curlun->blksize);
+                        if (amount == 0)
+                                goto empty_write;
+
                         /* Perform the write */
                         file_offset_tmp = file_offset;
                         nwritten = vfs_write(curlun->filp,
@@ -1033,8 +1020,7 @@ static int do_write(struct fsg_common *common)
                         } else if (nwritten < amount) {
                                 LDBG(curlun, "partial file write: %d/%u\n",
                                      (int)nwritten, amount);
-                                nwritten -= (nwritten & 511);
-                                /* Round down to a block */
+                                nwritten = round_down(nwritten, curlun->blksize);
                         }
                         file_offset += nwritten;
                         amount_left_to_write -= nwritten;
@@ -1043,13 +1029,15 @@ static int do_write(struct fsg_common *common)
                         /* If an error occurred, report it and its position */
                         if (nwritten < amount) {
                                 curlun->sense_data = SS_WRITE_ERROR;
-                                curlun->sense_data_info = file_offset >> 9;
+                                curlun->sense_data_info =
+                                        file_offset >> curlun->blkbits;
                                 curlun->info_valid = 1;
                                 break;
                         }
 
+ empty_write:
                         /* Did the host decide to stop early? */
-                        if (bh->outreq->actual != bh->outreq->length) {
+                        if (bh->outreq->actual < bh->bulk_out_intended_length) {
                                 common->short_packet_received = 1;
                                 break;
                         }
@@ -1129,8 +1117,8 @@ static int do_verify(struct fsg_common *common)
                 return -EIO;            /* No default reply */
 
         /* Prepare to carry out the file verify */
-        amount_left = verification_length << 9;
-        file_offset = ((loff_t) lba) << 9;
+        amount_left = verification_length << curlun->blkbits;
+        file_offset = ((loff_t) lba) << curlun->blkbits;
 
         /* Write out all the dirty buffers before invalidating them */
         fsg_lun_fsync_sub(curlun);
@@ -1148,8 +1136,6 @@ static int do_verify(struct fsg_common *common)
                  * Try to read the remaining amount, but not more than
                  * the buffer size.
                  * And don't try to read past the end of the file.
-                 * If this means reading 0 then we were asked to read
-                 * past the end of file.
                  */
                 amount = min(amount_left, FSG_BUFLEN);
                 amount = min((loff_t)amount,
@@ -1157,7 +1143,8 @@ static int do_verify(struct fsg_common *common)
                 if (amount == 0) {
                         curlun->sense_data =
                                         SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
-                        curlun->sense_data_info = file_offset >> 9;
+                        curlun->sense_data_info =
+                                file_offset >> curlun->blkbits;
                         curlun->info_valid = 1;
                         break;
                 }
@@ -1179,11 +1166,12 @@ static int do_verify(struct fsg_common *common)
                 } else if (nread < amount) {
                         LDBG(curlun, "partial file verify: %d/%u\n",
                              (int)nread, amount);
-                        nread -= nread & 511;   /* Round down to a sector */
+                        nread = round_down(nread, curlun->blksize);
                 }
                 if (nread == 0) {
                         curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
-                        curlun->sense_data_info = file_offset >> 9;
+                        curlun->sense_data_info =
+                                file_offset >> curlun->blkbits;
                         curlun->info_valid = 1;
                         break;
                 }
@@ -1289,7 +1277,7 @@ static int do_read_capacity(struct fsg_common *common, struct fsg_buffhd *bh)
 
         put_unaligned_be32(curlun->num_sectors - 1, &buf[0]);
                                                 /* Max logical block */
-        put_unaligned_be32(512, &buf[4]);       /* Block length */
+        put_unaligned_be32(curlun->blksize, &buf[4]);/* Block length */
         return 8;
 }
 
@@ -1527,7 +1515,7 @@ static int do_read_format_capacities(struct fsg_common *common,
 
         put_unaligned_be32(curlun->num_sectors, &buf[0]);
                                                 /* Number of blocks */
-        put_unaligned_be32(512, &buf[4]);       /* Block length */
+        put_unaligned_be32(curlun->blksize, &buf[4]);/* Block length */
         buf[4] = 0x02;                          /* Current capacity */
         return 12;
 }
@@ -1607,7 +1595,7 @@ static int throw_away_data(struct fsg_common *common)
                         common->next_buffhd_to_drain = bh->next;
 
                         /* A short packet or an error ends everything */
-                        if (bh->outreq->actual != bh->outreq->length ||
+                        if (bh->outreq->actual < bh->bulk_out_intended_length ||
                             bh->outreq->status != 0) {
                                 raise_exception(common,
                                                 FSG_STATE_ABORT_BULK_OUT);
@@ -1623,12 +1611,11 @@ static int throw_away_data(struct fsg_common *common)
                         amount = min(common->usb_amount_left, FSG_BUFLEN);
 
                         /*
-                         * amount is always divisible by 512, hence by
+                         * Except at the end of the transfer, amount will be
+                         * equal to the buffer size, which is divisible by
                          * the bulk-out maxpacket size.
                          */
-                        bh->outreq->length = amount;
-                        bh->bulk_out_intended_length = amount;
-                        bh->outreq->short_not_ok = 1;
+                        set_bulk_out_req_length(common, bh, amount);
                         if (!start_out_transfer(common, bh))
                                 /* Dunno what to do if common->fsg is NULL */
                                 return -EIO;
@@ -2022,7 +2009,8 @@ static int do_scsi_command(struct fsg_common *common)
 
         case READ_6:
                 i = common->cmnd[4];
-                common->data_size_from_cmnd = (i == 0 ? 256 : i) << 9;
+                common->data_size_from_cmnd = (i == 0 ? 256 : i) <<
+                                common->curlun->blkbits;
                 reply = check_command(common, 6, DATA_DIR_TO_HOST,
                                       (7<<1) | (1<<4), 1,
                                       "READ(6)");
@@ -2032,7 +2020,8 @@ static int do_scsi_command(struct fsg_common *common)
 
         case READ_10:
                 common->data_size_from_cmnd =
-                                get_unaligned_be16(&common->cmnd[7]) << 9;
+                                get_unaligned_be16(&common->cmnd[7]) <<
+                                                common->curlun->blkbits;
                 reply = check_command(common, 10, DATA_DIR_TO_HOST,
                                       (1<<1) | (0xf<<2) | (3<<7), 1,
                                       "READ(10)");
@@ -2042,7 +2031,8 @@ static int do_scsi_command(struct fsg_common *common)
 
         case READ_12:
                 common->data_size_from_cmnd =
-                                get_unaligned_be32(&common->cmnd[6]) << 9;
+                                get_unaligned_be32(&common->cmnd[6]) <<
+                                                common->curlun->blkbits;
                 reply = check_command(common, 12, DATA_DIR_TO_HOST,
                                       (1<<1) | (0xf<<2) | (0xf<<6), 1,
                                       "READ(12)");
@@ -2142,7 +2132,8 @@ static int do_scsi_command(struct fsg_common *common)
 
         case WRITE_6:
                 i = common->cmnd[4];
-                common->data_size_from_cmnd = (i == 0 ? 256 : i) << 9;
+                common->data_size_from_cmnd = (i == 0 ? 256 : i) <<
+                                        common->curlun->blkbits;
                 reply = check_command(common, 6, DATA_DIR_FROM_HOST,
                                       (7<<1) | (1<<4), 1,
                                       "WRITE(6)");
@@ -2152,7 +2143,8 @@ static int do_scsi_command(struct fsg_common *common)
 
         case WRITE_10:
                 common->data_size_from_cmnd =
-                                get_unaligned_be16(&common->cmnd[7]) << 9;
+                                get_unaligned_be16(&common->cmnd[7]) <<
+                                                common->curlun->blkbits;
                 reply = check_command(common, 10, DATA_DIR_FROM_HOST,
                                       (1<<1) | (0xf<<2) | (3<<7), 1,
                                       "WRITE(10)");
@@ -2162,7 +2154,8 @@ static int do_scsi_command(struct fsg_common *common)
 
         case WRITE_12:
                 common->data_size_from_cmnd =
-                                get_unaligned_be32(&common->cmnd[6]) << 9;
+                                get_unaligned_be32(&common->cmnd[6]) <<
+                                                common->curlun->blkbits;
                 reply = check_command(common, 12, DATA_DIR_FROM_HOST,
                                       (1<<1) | (0xf<<2) | (0xf<<6), 1,
                                       "WRITE(12)");
@@ -2297,7 +2290,6 @@ static int get_next_command(struct fsg_common *common)
 
         /* Queue a request to read a Bulk-only CBW */
         set_bulk_out_req_length(common, bh, USB_BULK_CB_WRAP_LEN);
-        bh->outreq->short_not_ok = 1;
         if (!start_out_transfer(common, bh))
                 /* Don't know what to do if common->fsg is NULL */
                 return -EIO;
@@ -2348,7 +2340,7 @@ reset:
         if (common->fsg) {
                 fsg = common->fsg;
 
-                for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
+                for (i = 0; i < fsg_num_buffers; ++i) {
                         struct fsg_buffhd *bh = &common->buffhds[i];
 
                         if (bh->inreq) {
@@ -2401,12 +2393,11 @@ reset:
                 goto reset;
         fsg->bulk_out->driver_data = common;
         fsg->bulk_out_enabled = 1;
-        common->bulk_out_maxpacket =
-                le16_to_cpu(fsg->bulk_out->desc->wMaxPacketSize);
+        common->bulk_out_maxpacket = usb_endpoint_maxp(fsg->bulk_out->desc);
         clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
 
         /* Allocate the requests */
-        for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
+        for (i = 0; i < fsg_num_buffers; ++i) {
                 struct fsg_buffhd       *bh = &common->buffhds[i];
 
                 rc = alloc_request(common, fsg->bulk_in, &bh->inreq);
@@ -2475,7 +2466,7 @@ static void handle_exception(struct fsg_common *common)
 
         /* Cancel all the pending transfers */
         if (likely(common->fsg)) {
-                for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
+                for (i = 0; i < fsg_num_buffers; ++i) {
                         bh = &common->buffhds[i];
                         if (bh->inreq_busy)
                                 usb_ep_dequeue(common->fsg->bulk_in, bh->inreq);
@@ -2487,7 +2478,7 @@ static void handle_exception(struct fsg_common *common)
                 /* Wait until everything is idle */
                 for (;;) {
                         int num_active = 0;
-                        for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
+                        for (i = 0; i < fsg_num_buffers; ++i) {
                                 bh = &common->buffhds[i];
                                 num_active += bh->inreq_busy + bh->outreq_busy;
                         }
@@ -2510,7 +2501,7 @@ static void handle_exception(struct fsg_common *common)
          */
         spin_lock_irq(&common->lock);
 
-        for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
+        for (i = 0; i < fsg_num_buffers; ++i) {
                 bh = &common->buffhds[i];
                 bh->state = BUF_STATE_EMPTY;
         }
@@ -2719,6 +2710,10 @@ static struct fsg_common *fsg_common_init(struct fsg_common *common,
         int nluns, i, rc;
         char *pathbuf;
 
+        rc = fsg_num_buffers_validate();
+        if (rc != 0)
+                return ERR_PTR(rc);
+
         /* Find out how many LUNs there should be */
         nluns = cfg->nluns;
         if (nluns < 1 || nluns > FSG_MAX_LUNS) {
@@ -2737,6 +2732,14 @@ static struct fsg_common *fsg_common_init(struct fsg_common *common,
                 common->free_storage_on_release = 0;
         }
 
+        common->buffhds = kcalloc(fsg_num_buffers,
+                                  sizeof *(common->buffhds), GFP_KERNEL);
+        if (!common->buffhds) {
+                if (common->free_storage_on_release)
+                        kfree(common);
+                return ERR_PTR(-ENOMEM);
+        }
+
         common->ops = cfg->ops;
         common->private_data = cfg->private_data;
 
@@ -2814,7 +2817,7 @@ static struct fsg_common *fsg_common_init(struct fsg_common *common,
 
         /* Data buffers cyclic list */
         bh = common->buffhds;
-        i = FSG_NUM_BUFFERS;
+        i = fsg_num_buffers;
         goto buffhds_first_it;
         do {
                 bh->next = bh + 1;
@@ -2940,12 +2943,13 @@ static void fsg_common_release(struct kref *ref)
 
         {
                 struct fsg_buffhd *bh = common->buffhds;
-                unsigned i = FSG_NUM_BUFFERS;
+                unsigned i = fsg_num_buffers;
                 do {
                         kfree(bh->buf);
                 } while (++bh, --i);
         }
 
+        kfree(common->buffhds);
         if (common->free_storage_on_release)
                 kfree(common);
 }
@@ -3019,6 +3023,28 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
                 }
         }
 
+        if (gadget_is_superspeed(gadget)) {
+                unsigned        max_burst;
+
+                /* Calculate bMaxBurst, we know packet size is 1024 */
+                max_burst = min_t(unsigned, FSG_BUFLEN / 1024, 15);
+
+                fsg_ss_bulk_in_desc.bEndpointAddress =
+                        fsg_fs_bulk_in_desc.bEndpointAddress;
+                fsg_ss_bulk_in_comp_desc.bMaxBurst = max_burst;
+
+                fsg_ss_bulk_out_desc.bEndpointAddress =
+                        fsg_fs_bulk_out_desc.bEndpointAddress;
+                fsg_ss_bulk_out_comp_desc.bMaxBurst = max_burst;
+
+                f->ss_descriptors = usb_copy_descriptors(fsg_ss_function);
+                if (unlikely(!f->ss_descriptors)) {
+                        usb_free_descriptors(f->hs_descriptors);
+                        usb_free_descriptors(f->descriptors);
+                        return -ENOMEM;
+                }
+        }
+
         return 0;
 
 autoconf_fail:
diff --git a/drivers/usb/gadget/f_midi.c b/drivers/usb/gadget/f_midi.c
new file mode 100644
index 000000000000..67b222908cf9
--- /dev/null
+++ b/drivers/usb/gadget/f_midi.c
@@ -0,0 +1,998 @@
+/*
+ * f_midi.c -- USB MIDI class function driver
+ *
+ * Copyright (C) 2006 Thumtronics Pty Ltd.
+ * Developed for Thumtronics by Grey Innovation
+ * Ben Williamson <ben.williamson@greyinnovation.com>
+ *
+ * Rewritten for the composite framework
+ *   Copyright (C) 2011 Daniel Mack <zonque@gmail.com>
+ *
+ * Based on drivers/usb/gadget/f_audio.c,
+ *   Copyright (C) 2008 Bryan Wu <cooloney@kernel.org>
+ *   Copyright (C) 2008 Analog Devices, Inc
+ *
+ * and drivers/usb/gadget/midi.c,
+ *   Copyright (C) 2006 Thumtronics Pty Ltd.
+ *   Ben Williamson <ben.williamson@greyinnovation.com>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/utsname.h>
+#include <linux/device.h>
+
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/rawmidi.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb/audio.h>
+#include <linux/usb/midi.h>
+
+MODULE_AUTHOR("Ben Williamson");
+MODULE_LICENSE("GPL v2");
+
+static const char f_midi_shortname[] = "f_midi";
+static const char f_midi_longname[] = "MIDI Gadget";
+
+/*
+ * We can only handle 16 cables on one single endpoint, as cable numbers are
+ * stored in 4-bit fields. And as the interface currently only holds one
+ * single endpoint, this is the maximum number of ports we can allow.
+ */
+#define MAX_PORTS 16
+
+/*
+ * This is a gadget, and the IN/OUT naming is from the host's perspective.
+ * USB -> OUT endpoint -> rawmidi
+ * USB <- IN endpoint  <- rawmidi
+ */
+struct gmidi_in_port {
+        struct f_midi *midi;
+        int active;
+        uint8_t cable;
+        uint8_t state;
+#define STATE_UNKNOWN   0
+#define STATE_1PARAM    1
+#define STATE_2PARAM_1  2
+#define STATE_2PARAM_2  3
+#define STATE_SYSEX_0   4
+#define STATE_SYSEX_1   5
+#define STATE_SYSEX_2   6
+        uint8_t data[2];
+};
+
+struct f_midi {
+        struct usb_function     func;
+        struct usb_gadget       *gadget;
+        struct usb_ep           *in_ep, *out_ep;
+        struct snd_card         *card;
+        struct snd_rawmidi      *rmidi;
+
+        struct snd_rawmidi_substream *in_substream[MAX_PORTS];
+        struct snd_rawmidi_substream *out_substream[MAX_PORTS];
+        struct gmidi_in_port    *in_port[MAX_PORTS];
+
+        unsigned long           out_triggered;
+        struct tasklet_struct   tasklet;
+        unsigned int in_ports;
+        unsigned int out_ports;
+        int index;
+        char *id;
+        unsigned int buflen, qlen;
+};
+
+static inline struct f_midi *func_to_midi(struct usb_function *f)
+{
+        return container_of(f, struct f_midi, func);
+}
+
+static void f_midi_transmit(struct f_midi *midi, struct usb_request *req);
+
+DECLARE_UAC_AC_HEADER_DESCRIPTOR(1);
+DECLARE_USB_MIDI_OUT_JACK_DESCRIPTOR(1);
+DECLARE_USB_MIDI_OUT_JACK_DESCRIPTOR(16);
+DECLARE_USB_MS_ENDPOINT_DESCRIPTOR(16);
+
+/* B.3.1  Standard AC Interface Descriptor */
+static struct usb_interface_descriptor ac_interface_desc __initdata = {
+        .bLength =              USB_DT_INTERFACE_SIZE,
+        .bDescriptorType =      USB_DT_INTERFACE,
+        /* .bInterfaceNumber =  DYNAMIC */
+        /* .bNumEndpoints =     DYNAMIC */
+        .bInterfaceClass =      USB_CLASS_AUDIO,
+        .bInterfaceSubClass =   USB_SUBCLASS_AUDIOCONTROL,
+        /* .iInterface =        DYNAMIC */
+};
+
+/* B.3.2  Class-Specific AC Interface Descriptor */
+static struct uac1_ac_header_descriptor_1 ac_header_desc __initdata = {
+        .bLength =              UAC_DT_AC_HEADER_SIZE(1),
+        .bDescriptorType =      USB_DT_CS_INTERFACE,
+        .bDescriptorSubtype =   USB_MS_HEADER,
+        .bcdADC =               cpu_to_le16(0x0100),
+        .wTotalLength =         cpu_to_le16(UAC_DT_AC_HEADER_SIZE(1)),
+        .bInCollection =        1,
+        /* .baInterfaceNr =     DYNAMIC */
+};
+
+/* B.4.1  Standard MS Interface Descriptor */
+static struct usb_interface_descriptor ms_interface_desc __initdata = {
+        .bLength =              USB_DT_INTERFACE_SIZE,
+        .bDescriptorType =      USB_DT_INTERFACE,
+        /* .bInterfaceNumber =  DYNAMIC */
+        .bNumEndpoints =        2,
+        .bInterfaceClass =      USB_CLASS_AUDIO,
+        .bInterfaceSubClass =   USB_SUBCLASS_MIDISTREAMING,
+        /* .iInterface =        DYNAMIC */
+};
+
+/* B.4.2  Class-Specific MS Interface Descriptor */
+static struct usb_ms_header_descriptor ms_header_desc __initdata = {
+        .bLength =              USB_DT_MS_HEADER_SIZE,
+        .bDescriptorType =      USB_DT_CS_INTERFACE,
+        .bDescriptorSubtype =   USB_MS_HEADER,
+        .bcdMSC =               cpu_to_le16(0x0100),
+        /* .wTotalLength =      DYNAMIC */
+};
+
+/* B.4.3  Embedded MIDI IN Jack Descriptor */
+static struct usb_midi_in_jack_descriptor jack_in_emb_desc = {
+        .bLength =            USB_DT_MIDI_IN_SIZE,
+        .bDescriptorType =      USB_DT_CS_INTERFACE,
+        .bDescriptorSubtype =   USB_MS_MIDI_IN_JACK,
+        .bJackType =        USB_MS_EMBEDDED,
+        /* .bJackID =           DYNAMIC */
+};
+
+/* B.4.4  Embedded MIDI OUT Jack Descriptor */
+static struct usb_midi_out_jack_descriptor_16 jack_out_emb_desc = {
+        /* .bLength =           DYNAMIC */
+        .bDescriptorType =      USB_DT_CS_INTERFACE,
+        .bDescriptorSubtype =   USB_MS_MIDI_OUT_JACK,
+        .bJackType =            USB_MS_EMBEDDED,
+        /* .bJackID =           DYNAMIC */
+        /* .bNrInputPins =      DYNAMIC */
+        /* .pins =              DYNAMIC */
+};
+
+/* B.5.1  Standard Bulk OUT Endpoint Descriptor */
+static struct usb_endpoint_descriptor bulk_out_desc = {
+        .bLength =              USB_DT_ENDPOINT_AUDIO_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+        .bEndpointAddress =     USB_DIR_OUT,
+        .bmAttributes =         USB_ENDPOINT_XFER_BULK,
+};
+
+/* B.5.2  Class-specific MS Bulk OUT Endpoint Descriptor */
+static struct usb_ms_endpoint_descriptor_16 ms_out_desc = {
+        /* .bLength =           DYNAMIC */
+        .bDescriptorType =      USB_DT_CS_ENDPOINT,
+        .bDescriptorSubtype =   USB_MS_GENERAL,
+        /* .bNumEmbMIDIJack =   DYNAMIC */
+        /* .baAssocJackID =     DYNAMIC */
+};
+
+/* B.6.1  Standard Bulk IN Endpoint Descriptor */
+static struct usb_endpoint_descriptor bulk_in_desc = {
+        .bLength =              USB_DT_ENDPOINT_AUDIO_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+        .bEndpointAddress =     USB_DIR_IN,
+        .bmAttributes =         USB_ENDPOINT_XFER_BULK,
+};
+
+/* B.6.2  Class-specific MS Bulk IN Endpoint Descriptor */
+static struct usb_ms_endpoint_descriptor_16 ms_in_desc = {
+        /* .bLength =           DYNAMIC */
+        .bDescriptorType =      USB_DT_CS_ENDPOINT,
+        .bDescriptorSubtype =   USB_MS_GENERAL,
+        /* .bNumEmbMIDIJack =   DYNAMIC */
+        /* .baAssocJackID =     DYNAMIC */
+};
+
+/* string IDs are assigned dynamically */
+
+#define STRING_FUNC_IDX                 0
+
+static struct usb_string midi_string_defs[] = {
+        [STRING_FUNC_IDX].s = "MIDI function",
+        {  } /* end of list */
+};
+
+static struct usb_gadget_strings midi_stringtab = {
+        .language       = 0x0409,       /* en-us */
+        .strings        = midi_string_defs,
+};
+
+static struct usb_gadget_strings *midi_strings[] = {
+        &midi_stringtab,
+        NULL,
+};
+
+static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length)
+{
+        struct usb_request *req;
+
+        req = usb_ep_alloc_request(ep, GFP_ATOMIC);
+        if (req) {
+                req->length = length;
+                req->buf = kmalloc(length, GFP_ATOMIC);
+                if (!req->buf) {
+                        usb_ep_free_request(ep, req);
+                        req = NULL;
+                }
+        }
+        return req;
+}
+
+static void free_ep_req(struct usb_ep *ep, struct usb_request *req)
+{
+        kfree(req->buf);
+        usb_ep_free_request(ep, req);
+}
+
+static const uint8_t f_midi_cin_length[] = {
+        0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1
+};
+
+/*
+ * Receives a chunk of MIDI data.
+ */
+static void f_midi_read_data(struct usb_ep *ep, int cable,
+                             uint8_t *data, int length)
+{
+        struct f_midi *midi = ep->driver_data;
+        struct snd_rawmidi_substream *substream = midi->out_substream[cable];
+
+        if (!substream)
+                /* Nobody is listening - throw it on the floor. */
+                return;
+
+        if (!test_bit(cable, &midi->out_triggered))
+                return;
+
+        snd_rawmidi_receive(substream, data, length);
+}
+
+static void f_midi_handle_out_data(struct usb_ep *ep, struct usb_request *req)
+{
+        unsigned int i;
+        u8 *buf = req->buf;
+
+        for (i = 0; i + 3 < req->actual; i += 4)
+                if (buf[i] != 0) {
+                        int cable = buf[i] >> 4;
+                        int length = f_midi_cin_length[buf[i] & 0x0f];
+                        f_midi_read_data(ep, cable, &buf[i + 1], length);
+                }
+}
+
+static void
+f_midi_complete(struct usb_ep *ep, struct usb_request *req)
+{
+        struct f_midi *midi = ep->driver_data;
+        struct usb_composite_dev *cdev = midi->func.config->cdev;
+        int status = req->status;
+
+        switch (status) {
+        case 0:                  /* normal completion */
+                if (ep == midi->out_ep) {
+                        /* We received stuff. req is queued again, below */
+                        f_midi_handle_out_data(ep, req);
+                } else if (ep == midi->in_ep) {
+                        /* Our transmit completed. See if there's more to go.
+                         * f_midi_transmit eats req, don't queue it again. */
+                        f_midi_transmit(midi, req);
+                        return;
+                }
+                break;
+
+        /* this endpoint is normally active while we're configured */
+        case -ECONNABORTED:     /* hardware forced ep reset */
+        case -ECONNRESET:       /* request dequeued */
+        case -ESHUTDOWN:        /* disconnect from host */
+                VDBG(cdev, "%s gone (%d), %d/%d\n", ep->name, status,
+                                req->actual, req->length);
+                if (ep == midi->out_ep)
+                        f_midi_handle_out_data(ep, req);
+
+                free_ep_req(ep, req);
+                return;
+
+        case -EOVERFLOW:        /* buffer overrun on read means that
+                                 * we didn't provide a big enough buffer.
+                                 */
+        default:
+                DBG(cdev, "%s complete --> %d, %d/%d\n", ep->name,
+                                status, req->actual, req->length);
+                break;
+        case -EREMOTEIO:        /* short read */
+                break;
+        }
+
+        status = usb_ep_queue(ep, req, GFP_ATOMIC);
+        if (status) {
+                ERROR(cdev, "kill %s:  resubmit %d bytes --> %d\n",
+                                ep->name, req->length, status);
+                usb_ep_set_halt(ep);
+                /* FIXME recover later ... somehow */
+        }
+}
+
+static int f_midi_start_ep(struct f_midi *midi,
+                           struct usb_function *f,
+                           struct usb_ep *ep)
+{
+        int err;
+        struct usb_composite_dev *cdev = f->config->cdev;
+
+        if (ep->driver_data)
+                usb_ep_disable(ep);
+
+        err = config_ep_by_speed(midi->gadget, f, ep);
+        if (err) {
+                ERROR(cdev, "can't configure %s: %d\n", ep->name, err);
+                return err;
+        }
+
+        err = usb_ep_enable(ep);
+        if (err) {
+                ERROR(cdev, "can't start %s: %d\n", ep->name, err);
+                return err;
+        }
+
+        ep->driver_data = midi;
+
+        return 0;
+}
+
+static int f_midi_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
+{
+        struct f_midi *midi = func_to_midi(f);
+        struct usb_composite_dev *cdev = f->config->cdev;
+        unsigned i;
+        int err;
+
+        err = f_midi_start_ep(midi, f, midi->in_ep);
+        if (err)
+                return err;
+
+        err = f_midi_start_ep(midi, f, midi->out_ep);
+        if (err)
+                return err;
+
+        if (midi->out_ep->driver_data)
+                usb_ep_disable(midi->out_ep);
+
+        err = config_ep_by_speed(midi->gadget, f, midi->out_ep);
+        if (err) {
+                ERROR(cdev, "can't configure %s: %d\n",
+                      midi->out_ep->name, err);
+                return err;
+        }
+
+        err = usb_ep_enable(midi->out_ep);
+        if (err) {
+                ERROR(cdev, "can't start %s: %d\n",
+                      midi->out_ep->name, err);
+                return err;
+        }
+
+        midi->out_ep->driver_data = midi;
+
+        /* allocate a bunch of read buffers and queue them all at once. */
+        for (i = 0; i < midi->qlen && err == 0; i++) {
+                struct usb_request *req =
+                        alloc_ep_req(midi->out_ep, midi->buflen);
+                if (req == NULL)
+                        return -ENOMEM;
+
+                req->complete = f_midi_complete;
+                err = usb_ep_queue(midi->out_ep, req, GFP_ATOMIC);
+                if (err) {
+                        ERROR(midi, "%s queue req: %d\n",
+                                    midi->out_ep->name, err);
+                }
+        }
+
+        return 0;
+}
+
+static void f_midi_disable(struct usb_function *f)
+{
+        struct f_midi *midi = func_to_midi(f);
+        struct usb_composite_dev *cdev = f->config->cdev;
+
+        DBG(cdev, "disable\n");
+
+        /*
+         * just disable endpoints, forcing completion of pending i/o.
+         * all our completion handlers free their requests in this case.
+         */
+        usb_ep_disable(midi->in_ep);
+        usb_ep_disable(midi->out_ep);
+}
+
+static void f_midi_unbind(struct usb_configuration *c, struct usb_function *f)
+{
+        struct usb_composite_dev *cdev = f->config->cdev;
+        struct f_midi *midi = func_to_midi(f);
+        struct snd_card *card;
+
+        DBG(cdev, "unbind\n");
+
+        /* just to be sure */
+        f_midi_disable(f);
+
+        card = midi->card;
+        midi->card = NULL;
+        if (card)
+                snd_card_free(card);
+
+        kfree(midi->id);
+        midi->id = NULL;
+
+        usb_free_descriptors(f->descriptors);
+        kfree(midi);
+}
+
+static int f_midi_snd_free(struct snd_device *device)
+{
+        return 0;
+}
+
+static void f_midi_transmit_packet(struct usb_request *req, uint8_t p0,
+                                        uint8_t p1, uint8_t p2, uint8_t p3)
+{
+        unsigned length = req->length;
+        u8 *buf = (u8 *)req->buf + length;
+
+        buf[0] = p0;
+        buf[1] = p1;
+        buf[2] = p2;
+        buf[3] = p3;
+        req->length = length + 4;
+}
+
+/*
+ * Converts MIDI commands to USB MIDI packets.
+ */
+static void f_midi_transmit_byte(struct usb_request *req,
+                                 struct gmidi_in_port *port, uint8_t b)
+{
+        uint8_t p0 = port->cable << 4;
+
+        if (b >= 0xf8) {
+                f_midi_transmit_packet(req, p0 | 0x0f, b, 0, 0);
+        } else if (b >= 0xf0) {
+                switch (b) {
+                case 0xf0:
+                        port->data[0] = b;
+                        port->state = STATE_SYSEX_1;
+                        break;
+                case 0xf1:
+                case 0xf3:
+                        port->data[0] = b;
+                        port->state = STATE_1PARAM;
+                        break;
+                case 0xf2:
+                        port->data[0] = b;
+                        port->state = STATE_2PARAM_1;
+                        break;
+                case 0xf4:
+                case 0xf5:
+                        port->state = STATE_UNKNOWN;
+                        break;
+                case 0xf6:
+                        f_midi_transmit_packet(req, p0 | 0x05, 0xf6, 0, 0);
+                        port->state = STATE_UNKNOWN;
+                        break;
+                case 0xf7:
+                        switch (port->state) {
+                        case STATE_SYSEX_0:
+                                f_midi_transmit_packet(req,
+                                        p0 | 0x05, 0xf7, 0, 0);
+                                break;
+                        case STATE_SYSEX_1:
+                                f_midi_transmit_packet(req,
+                                        p0 | 0x06, port->data[0], 0xf7, 0);
+                                break;
+                        case STATE_SYSEX_2:
+                                f_midi_transmit_packet(req,
+                                        p0 | 0x07, port->data[0],
+                                        port->data[1], 0xf7);
+                                break;
+                        }
+                        port->state = STATE_UNKNOWN;
+                        break;
+                }
+        } else if (b >= 0x80) {
+                port->data[0] = b;
+                if (b >= 0xc0 && b <= 0xdf)
+                        port->state = STATE_1PARAM;
+                else
+                        port->state = STATE_2PARAM_1;
+        } else { /* b < 0x80 */
+                switch (port->state) {
+                case STATE_1PARAM:
+                        if (port->data[0] < 0xf0) {
+                                p0 |= port->data[0] >> 4;
+                        } else {
+                                p0 |= 0x02;
+                                port->state = STATE_UNKNOWN;
+                        }
+                        f_midi_transmit_packet(req, p0, port->data[0], b, 0);
+                        break;
+                case STATE_2PARAM_1:
+                        port->data[1] = b;
+                        port->state = STATE_2PARAM_2;
+                        break;
+                case STATE_2PARAM_2:
+                        if (port->data[0] < 0xf0) {
+                                p0 |= port->data[0] >> 4;
+                                port->state = STATE_2PARAM_1;
+                        } else {
+                                p0 |= 0x03;
+                                port->state = STATE_UNKNOWN;
+                        }
+                        f_midi_transmit_packet(req,
+                                p0, port->data[0], port->data[1], b);
+                        break;
+                case STATE_SYSEX_0:
+                        port->data[0] = b;
+                        port->state = STATE_SYSEX_1;
+                        break;
+                case STATE_SYSEX_1:
+                        port->data[1] = b;
+                        port->state = STATE_SYSEX_2;
+                        break;
+                case STATE_SYSEX_2:
+                        f_midi_transmit_packet(req,
+                                p0 | 0x04, port->data[0], port->data[1], b);
+                        port->state = STATE_SYSEX_0;
+                        break;
+                }
+        }
+}
+
+static void f_midi_transmit(struct f_midi *midi, struct usb_request *req)
+{
+        struct usb_ep *ep = midi->in_ep;
+        int i;
+
+        if (!ep)
+                return;
+
+        if (!req)
+                req = alloc_ep_req(ep, midi->buflen);
+
+        if (!req) {
+                ERROR(midi, "gmidi_transmit: alloc_ep_request failed\n");
+                return;
+        }
+        req->length = 0;
+        req->complete = f_midi_complete;
+
+        for (i = 0; i < MAX_PORTS; i++) {
+                struct gmidi_in_port *port = midi->in_port[i];
+                struct snd_rawmidi_substream *substream = midi->in_substream[i];
+
+                if (!port || !port->active || !substream)
+                        continue;
+
+                while (req->length + 3 < midi->buflen) {
+                        uint8_t b;
+                        if (snd_rawmidi_transmit(substream, &b, 1) != 1) {
+                                port->active = 0;
+                                break;
+                        }
+                        f_midi_transmit_byte(req, port, b);
+                }
+        }
+
+        if (req->length > 0)
+                usb_ep_queue(ep, req, GFP_ATOMIC);
+        else
+                free_ep_req(ep, req);
+}
+
+static void f_midi_in_tasklet(unsigned long data)
+{
+        struct f_midi *midi = (struct f_midi *) data;
+        f_midi_transmit(midi, NULL);
+}
+
+static int f_midi_in_open(struct snd_rawmidi_substream *substream)
+{
+        struct f_midi *midi = substream->rmidi->private_data;
+
+        if (!midi->in_port[substream->number])
+                return -EINVAL;
+
+        VDBG(midi, "%s()\n", __func__);
+        midi->in_substream[substream->number] = substream;
+        midi->in_port[substream->number]->state = STATE_UNKNOWN;
+        return 0;
+}
+
+static int f_midi_in_close(struct snd_rawmidi_substream *substream)
+{
+        struct f_midi *midi = substream->rmidi->private_data;
+
+        VDBG(midi, "%s()\n", __func__);
+        return 0;
+}
+
+static void f_midi_in_trigger(struct snd_rawmidi_substream *substream, int up)
+{
+        struct f_midi *midi = substream->rmidi->private_data;
+
+        if (!midi->in_port[substream->number])
+                return;
+
+        VDBG(midi, "%s() %d\n", __func__, up);
+        midi->in_port[substream->number]->active = up;
+        if (up)
+                tasklet_hi_schedule(&midi->tasklet);
+}
+
+static int f_midi_out_open(struct snd_rawmidi_substream *substream)
+{
+        struct f_midi *midi = substream->rmidi->private_data;
+
+        if (substream->number >= MAX_PORTS)
+                return -EINVAL;
+
+        VDBG(midi, "%s()\n", __func__);
+        midi->out_substream[substream->number] = substream;
+        return 0;
+}
+
+static int f_midi_out_close(struct snd_rawmidi_substream *substream)
+{
+        struct f_midi *midi = substream->rmidi->private_data;
+
+        VDBG(midi, "%s()\n", __func__);
+        return 0;
+}
+
+static void f_midi_out_trigger(struct snd_rawmidi_substream *substream, int up)
+{
+        struct f_midi *midi = substream->rmidi->private_data;
+
+        VDBG(midi, "%s()\n", __func__);
+
+        if (up)
+                set_bit(substream->number, &midi->out_triggered);
+        else
+                clear_bit(substream->number, &midi->out_triggered);
+}
+
+static struct snd_rawmidi_ops gmidi_in_ops = {
+        .open = f_midi_in_open,
+        .close = f_midi_in_close,
+        .trigger = f_midi_in_trigger,
+};
+
+static struct snd_rawmidi_ops gmidi_out_ops = {
+        .open = f_midi_out_open,
+        .close = f_midi_out_close,
+        .trigger = f_midi_out_trigger
+};
+
+/* register as a sound "card" */
+static int f_midi_register_card(struct f_midi *midi)
+{
+        struct snd_card *card;
+        struct snd_rawmidi *rmidi;
+        int err;
+        static struct snd_device_ops ops = {
+                .dev_free = f_midi_snd_free,
+        };
+
+        err = snd_card_create(midi->index, midi->id, THIS_MODULE, 0, &card);
+        if (err < 0) {
+                ERROR(midi, "snd_card_create() failed\n");
+                goto fail;
+        }
+        midi->card = card;
+
+        err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, midi, &ops);
+        if (err < 0) {
+                ERROR(midi, "snd_device_new() failed: error %d\n", err);
+                goto fail;
+        }
+
+        strcpy(card->driver, f_midi_longname);
+        strcpy(card->longname, f_midi_longname);
+        strcpy(card->shortname, f_midi_shortname);
+
+        /* Set up rawmidi */
+        snd_component_add(card, "MIDI");
+        err = snd_rawmidi_new(card, card->longname, 0,
+                              midi->out_ports, midi->in_ports, &rmidi);
+        if (err < 0) {
+                ERROR(midi, "snd_rawmidi_new() failed: error %d\n", err);
+                goto fail;
+        }
+        midi->rmidi = rmidi;
+        strcpy(rmidi->name, card->shortname);
+        rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
+                            SNDRV_RAWMIDI_INFO_INPUT |
+                            SNDRV_RAWMIDI_INFO_DUPLEX;
+        rmidi->private_data = midi;
+
+        /*
+         * Yes, rawmidi OUTPUT = USB IN, and rawmidi INPUT = USB OUT.
+         * It's an upside-down world being a gadget.
+         */
+        snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &gmidi_in_ops);
+        snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &gmidi_out_ops);
+
+        snd_card_set_dev(card, &midi->gadget->dev);
+
+        /* register it - we're ready to go */
+        err = snd_card_register(card);
+        if (err < 0) {
+                ERROR(midi, "snd_card_register() failed\n");
+                goto fail;
+        }
+
+        VDBG(midi, "%s() finished ok\n", __func__);
+        return 0;
+
+fail:
+        if (midi->card) {
+                snd_card_free(midi->card);
+                midi->card = NULL;
+        }
+        return err;
+}
+
+/* MIDI function driver setup/binding */
+
+static int __init
+f_midi_bind(struct usb_configuration *c, struct usb_function *f)
+{
+        struct usb_descriptor_header *midi_function[(MAX_PORTS * 2) + 12];
+        struct usb_midi_in_jack_descriptor jack_in_ext_desc[MAX_PORTS];
+        struct usb_midi_out_jack_descriptor_1 jack_out_ext_desc[MAX_PORTS];
+        struct usb_composite_dev *cdev = c->cdev;
+        struct f_midi *midi = func_to_midi(f);
+        int status, n, jack = 1, i = 0;
+
+        /* maybe allocate device-global string ID */
+        if (midi_string_defs[0].id == 0) {
+                status = usb_string_id(c->cdev);
+                if (status < 0)
+                        goto fail;
+                midi_string_defs[0].id = status;
+        }
+
+        /* We have two interfaces, AudioControl and MIDIStreaming */
+        status = usb_interface_id(c, f);
+        if (status < 0)
+                goto fail;
+        ac_interface_desc.bInterfaceNumber = status;
+
+        status = usb_interface_id(c, f);
+        if (status < 0)
+                goto fail;
+        ms_interface_desc.bInterfaceNumber = status;
+        ac_header_desc.baInterfaceNr[0] = status;
+
+        status = -ENODEV;
+
+        /* allocate instance-specific endpoints */
+        midi->in_ep = usb_ep_autoconfig(cdev->gadget, &bulk_in_desc);
+        if (!midi->in_ep)
+                goto fail;
+        midi->in_ep->driver_data = cdev;        /* claim */
+
+        midi->out_ep = usb_ep_autoconfig(cdev->gadget, &bulk_out_desc);
+        if (!midi->out_ep)
+                goto fail;
+        midi->out_ep->driver_data = cdev;       /* claim */
+
+        /*
+         * construct the function's descriptor set. As the number of
+         * input and output MIDI ports is configurable, we have to do
+         * it that way.
+         */
+
+        /* add the headers - these are always the same */
+        midi_function[i++] = (struct usb_descriptor_header *) &ac_interface_desc;
+        midi_function[i++] = (struct usb_descriptor_header *) &ac_header_desc;
+        midi_function[i++] = (struct usb_descriptor_header *) &ms_interface_desc;
+
+        /* calculate the header's wTotalLength */
+        n = USB_DT_MS_HEADER_SIZE
+                + (1 + midi->in_ports) * USB_DT_MIDI_IN_SIZE
+                + (1 + midi->out_ports) * USB_DT_MIDI_OUT_SIZE(1);
+        ms_header_desc.wTotalLength = cpu_to_le16(n);
+
+        midi_function[i++] = (struct usb_descriptor_header *) &ms_header_desc;
+
+        /* we have one embedded IN jack */
+        jack_in_emb_desc.bJackID = jack++;
+        midi_function[i++] = (struct usb_descriptor_header *) &jack_in_emb_desc;
+
+        /* and a dynamic amount of external IN jacks */
+        for (n = 0; n < midi->in_ports; n++) {
+                struct usb_midi_in_jack_descriptor *ext = &jack_in_ext_desc[n];
+
+                ext->bLength =                  USB_DT_MIDI_IN_SIZE;
+                ext->bDescriptorType =          USB_DT_CS_INTERFACE;
+                ext->bDescriptorSubtype =       USB_MS_MIDI_IN_JACK;
+                ext->bJackType =                USB_MS_EXTERNAL;
+                ext->bJackID =                  jack++;
+                ext->iJack =                    0;
+
+                midi_function[i++] = (struct usb_descriptor_header *) ext;
+        }
+
+        /* one embedded OUT jack ... */
+        jack_out_emb_desc.bLength = USB_DT_MIDI_OUT_SIZE(midi->in_ports);
+        jack_out_emb_desc.bJackID = jack++;
+        jack_out_emb_desc.bNrInputPins = midi->in_ports;
+        /* ... which referencess all external IN jacks */
+        for (n = 0; n < midi->in_ports; n++) {
+                jack_out_emb_desc.pins[n].baSourceID = jack_in_ext_desc[n].bJackID;
+                jack_out_emb_desc.pins[n].baSourcePin = 1;
+        }
+
+        midi_function[i++] = (struct usb_descriptor_header *) &jack_out_emb_desc;
+
+        /* and multiple external OUT jacks ... */
+        for (n = 0; n < midi->out_ports; n++) {
+                struct usb_midi_out_jack_descriptor_1 *ext = &jack_out_ext_desc[n];
+                int m;
+
+                ext->bLength =                  USB_DT_MIDI_OUT_SIZE(1);
+                ext->bDescriptorType =          USB_DT_CS_INTERFACE;
+                ext->bDescriptorSubtype =       USB_MS_MIDI_OUT_JACK;
+                ext->bJackType =                USB_MS_EXTERNAL;
+                ext->bJackID =                  jack++;
+                ext->bNrInputPins =             1;
+                ext->iJack =                    0;
+                /* ... which all reference the same embedded IN jack */
+                for (m = 0; m < midi->out_ports; m++) {
+                        ext->pins[m].baSourceID =       jack_in_emb_desc.bJackID;
+                        ext->pins[m].baSourcePin =      1;
+                }
+
+                midi_function[i++] = (struct usb_descriptor_header *) ext;
+        }
+
+        /* configure the endpoint descriptors ... */
+        ms_out_desc.bLength = USB_DT_MS_ENDPOINT_SIZE(midi->in_ports);
+        ms_out_desc.bNumEmbMIDIJack = midi->in_ports;
+        for (n = 0; n < midi->in_ports; n++)
+                ms_out_desc.baAssocJackID[n] = jack_in_emb_desc.bJackID;
+
+        ms_in_desc.bLength = USB_DT_MS_ENDPOINT_SIZE(midi->out_ports);
+        ms_in_desc.bNumEmbMIDIJack = midi->out_ports;
+        for (n = 0; n < midi->out_ports; n++)
+                ms_in_desc.baAssocJackID[n] = jack_out_emb_desc.bJackID;
+
+        /* ... and add them to the list */
+        midi_function[i++] = (struct usb_descriptor_header *) &bulk_out_desc;
+        midi_function[i++] = (struct usb_descriptor_header *) &ms_out_desc;
+        midi_function[i++] = (struct usb_descriptor_header *) &bulk_in_desc;
+        midi_function[i++] = (struct usb_descriptor_header *) &ms_in_desc;
+        midi_function[i++] = NULL;
+
+        /*
+         * support all relevant hardware speeds... we expect that when
+         * hardware is dual speed, all bulk-capable endpoints work at
+         * both speeds
+         */
+        /* copy descriptors, and track endpoint copies */
+        if (gadget_is_dualspeed(c->cdev->gadget)) {
+                c->highspeed = true;
+                bulk_in_desc.wMaxPacketSize = cpu_to_le16(512);
+                bulk_out_desc.wMaxPacketSize = cpu_to_le16(512);
+                f->hs_descriptors = usb_copy_descriptors(midi_function);
+        } else {
+                f->descriptors = usb_copy_descriptors(midi_function);
+        }
+
+        return 0;
+
+fail:
+        /* we might as well release our claims on endpoints */
+        if (midi->out_ep)
+                midi->out_ep->driver_data = NULL;
+        if (midi->in_ep)
+                midi->in_ep->driver_data = NULL;
+
+        ERROR(cdev, "%s: can't bind, err %d\n", f->name, status);
+
+        return status;
+}
+
+/**
+ * f_midi_bind_config - add USB MIDI function to a configuration
+ * @c: the configuration to supcard the USB audio function
+ * @index: the soundcard index to use for the ALSA device creation
+ * @id: the soundcard id to use for the ALSA device creation
+ * @buflen: the buffer length to use
+ * @qlen the number of read requests to pre-allocate
+ * Context: single threaded during gadget setup
+ *
+ * Returns zero on success, else negative errno.
+ */
+int __init f_midi_bind_config(struct usb_configuration *c,
+                              int index, char *id,
+                              unsigned int in_ports,
+                              unsigned int out_ports,
+                              unsigned int buflen,
+                              unsigned int qlen)
+{
+        struct f_midi *midi;
+        int status, i;
+
+        /* sanity check */
+        if (in_ports > MAX_PORTS || out_ports > MAX_PORTS)
+                return -EINVAL;
+
+        /* allocate and initialize one new instance */
+        midi = kzalloc(sizeof *midi, GFP_KERNEL);
+        if (!midi) {
+                status = -ENOMEM;
+                goto fail;
+        }
+
+        for (i = 0; i < in_ports; i++) {
+                struct gmidi_in_port *port = kzalloc(sizeof(*port), GFP_KERNEL);
+                if (!port) {
+                        status = -ENOMEM;
+                        goto setup_fail;
+                }
+
+                port->midi = midi;
+                port->active = 0;
+                port->cable = i;
+                midi->in_port[i] = port;
+        }
+
+        midi->gadget = c->cdev->gadget;
+        tasklet_init(&midi->tasklet, f_midi_in_tasklet, (unsigned long) midi);
+
+        /* set up ALSA midi devices */
+        midi->in_ports = in_ports;
+        midi->out_ports = out_ports;
+        status = f_midi_register_card(midi);
+        if (status < 0)
+                goto setup_fail;
+
+        midi->func.name        = "gmidi function";
+        midi->func.strings     = midi_strings;
+        midi->func.bind        = f_midi_bind;
+        midi->func.unbind      = f_midi_unbind;
+        midi->func.set_alt     = f_midi_set_alt;
+        midi->func.disable     = f_midi_disable;
+
+        midi->id = kstrdup(id, GFP_KERNEL);
+        midi->index = index;
+        midi->buflen = buflen;
+        midi->qlen = qlen;
+
+        status = usb_add_function(c, &midi->func);
+        if (status)
+                goto setup_fail;
+
+        return 0;
+
+setup_fail:
+        for (--i; i >= 0; i--)
+                kfree(midi->in_port[i]);
+        kfree(midi);
+fail:
+        return status;
+}
+
diff --git a/drivers/usb/gadget/f_ncm.c b/drivers/usb/gadget/f_ncm.c
index ae69ed7e6b99..aab8eded045b 100644
--- a/drivers/usb/gadget/f_ncm.c
+++ b/drivers/usb/gadget/f_ncm.c
@@ -13,15 +13,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/usb/gadget/f_obex.c b/drivers/usb/gadget/f_obex.c
index 394502abeb96..e3f74bf5da2d 100644
--- a/drivers/usb/gadget/f_obex.c
+++ b/drivers/usb/gadget/f_obex.c
@@ -10,15 +10,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 
 /* #define VERBOSE_DEBUG */
diff --git a/drivers/usb/gadget/f_phonet.c b/drivers/usb/gadget/f_phonet.c
index 8f3eab1af885..349077033338 100644
--- a/drivers/usb/gadget/f_phonet.c
+++ b/drivers/usb/gadget/f_phonet.c
@@ -8,16 +8,6 @@
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
  */
 
 #include <linux/mm.h>
diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c
index 3ea4666be3d0..704d1d94f72a 100644
--- a/drivers/usb/gadget/f_rndis.c
+++ b/drivers/usb/gadget/f_rndis.c
@@ -11,15 +11,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 /* #define VERBOSE_DEBUG */
diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c
index e18b4f520951..168906d2b5d4 100644
--- a/drivers/usb/gadget/f_sourcesink.c
+++ b/drivers/usb/gadget/f_sourcesink.c
@@ -8,15 +8,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 /* #define VERBOSE_DEBUG */
diff --git a/drivers/usb/gadget/f_subset.c b/drivers/usb/gadget/f_subset.c
index 3dc53754ab60..c1540648125a 100644
--- a/drivers/usb/gadget/f_subset.c
+++ b/drivers/usb/gadget/f_subset.c
@@ -8,15 +8,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/slab.h>
diff --git a/drivers/usb/gadget/f_uvc.c b/drivers/usb/gadget/f_uvc.c
index 7a8b9aa4aea5..2022fe492148 100644
--- a/drivers/usb/gadget/f_uvc.c
+++ b/drivers/usb/gadget/f_uvc.c
@@ -8,7 +8,6 @@
  *      it under the terms of the GNU General Public License as published by
  *      the Free Software Foundation; either version 2 of the License, or
  *      (at your option) any later version.
- *
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/usb/gadget/f_uvc.h b/drivers/usb/gadget/f_uvc.h
index e18a6636c283..abf832935134 100644
--- a/drivers/usb/gadget/f_uvc.h
+++ b/drivers/usb/gadget/f_uvc.h
@@ -8,7 +8,6 @@
  *      it under the terms of the GNU General Public License as published by
  *      the Free Software Foundation; either version 2 of the License, or
  *      (at your option) any later version.
- *
  */
 
 #ifndef _F_UVC_H_
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index 639e14a2fd15..3ac4f51cd0bb 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -69,8 +69,7 @@
  * each LUN would be settable independently as a disk drive or a CD-ROM
  * drive, but currently all LUNs have to be the same type.  The CD-ROM
  * emulation includes a single data track and no audio tracks; hence there
- * need be only one backing file per LUN.  Note also that the CD-ROM block
- * length is set to 512 rather than the more common value 2048.
+ * need be only one backing file per LUN.
  *
  * Requirements are modest; only a bulk-in and a bulk-out endpoint are
  * needed (an interrupt-out endpoint is also needed for CBI).  The memory
@@ -461,7 +460,6 @@ struct fsg_dev {
 
         struct fsg_buffhd       *next_buffhd_to_fill;
         struct fsg_buffhd       *next_buffhd_to_drain;
-        struct fsg_buffhd       buffhds[FSG_NUM_BUFFERS];
 
         int                     thread_wakeup_needed;
         struct completion       thread_notifier;
@@ -488,6 +486,8 @@ struct fsg_dev {
         unsigned int            nluns;
         struct fsg_lun          *luns;
         struct fsg_lun          *curlun;
+        /* Must be the last entry */
+        struct fsg_buffhd       buffhds[];
 };
 
 typedef void (*fsg_routine_t)(struct fsg_dev *);
@@ -586,7 +586,19 @@ dev_qualifier = {
         .bNumConfigurations =   1,
 };
 
+static int populate_bos(struct fsg_dev *fsg, u8 *buf)
+{
+        memcpy(buf, &fsg_bos_desc, USB_DT_BOS_SIZE);
+        buf += USB_DT_BOS_SIZE;
+
+        memcpy(buf, &fsg_ext_cap_desc, USB_DT_USB_EXT_CAP_SIZE);
+        buf += USB_DT_USB_EXT_CAP_SIZE;
 
+        memcpy(buf, &fsg_ss_cap_desc, USB_DT_USB_SS_CAP_SIZE);
+
+        return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE
+                + USB_DT_USB_EXT_CAP_SIZE;
+}
 
 /*
  * Config descriptors must agree with the code that sets configurations
@@ -935,7 +947,8 @@ static int standard_setup_req(struct fsg_dev *fsg,
                         break;
                 case USB_DT_DEVICE_QUALIFIER:
                         VDBG(fsg, "get device qualifier\n");
-                        if (!gadget_is_dualspeed(fsg->gadget))
+                        if (!gadget_is_dualspeed(fsg->gadget) ||
+                                        fsg->gadget->speed == USB_SPEED_SUPER)
                                 break;
                         /*
                          * Assume ep0 uses the same maxpacket value for both
@@ -948,7 +961,8 @@ static int standard_setup_req(struct fsg_dev *fsg,
 
                 case USB_DT_OTHER_SPEED_CONFIG:
                         VDBG(fsg, "get other-speed config descriptor\n");
-                        if (!gadget_is_dualspeed(fsg->gadget))
+                        if (!gadget_is_dualspeed(fsg->gadget) ||
+                                        fsg->gadget->speed == USB_SPEED_SUPER)
                                 break;
                         goto get_config;
                 case USB_DT_CONFIG:
@@ -967,7 +981,15 @@ get_config:
                         value = usb_gadget_get_string(&fsg_stringtab,
                                         w_value & 0xff, req->buf);
                         break;
+
+                case USB_DT_BOS:
+                        VDBG(fsg, "get bos descriptor\n");
+
+                        if (gadget_is_superspeed(fsg->gadget))
+                                value = populate_bos(fsg, req->buf);
+                        break;
                 }
+
                 break;
 
         /* One config, two speeds */
@@ -1136,7 +1158,6 @@ static int do_read(struct fsg_dev *fsg)
         u32                     amount_left;
         loff_t                  file_offset, file_offset_tmp;
         unsigned int            amount;
-        unsigned int            partial_page;
         ssize_t                 nread;
 
         /* Get the starting Logical Block Address and check that it's
@@ -1158,7 +1179,7 @@ static int do_read(struct fsg_dev *fsg)
                 curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
                 return -EINVAL;
         }
-        file_offset = ((loff_t) lba) << 9;
+        file_offset = ((loff_t) lba) << curlun->blkbits;
 
         /* Carry out the file reads */
         amount_left = fsg->data_size_from_cmnd;
@@ -1171,17 +1192,10 @@ static int do_read(struct fsg_dev *fsg)
                  * Try to read the remaining amount.
                  * But don't read more than the buffer size.
                  * And don't try to read past the end of the file.
-                 * Finally, if we're not at a page boundary, don't read past
-                 *      the next page.
-                 * If this means reading 0 then we were asked to read past
-                 *      the end of file. */
+                 */
                 amount = min((unsigned int) amount_left, mod_data.buflen);
                 amount = min((loff_t) amount,
                                 curlun->file_length - file_offset);
-                partial_page = file_offset & (PAGE_CACHE_SIZE - 1);
-                if (partial_page > 0)
-                        amount = min(amount, (unsigned int) PAGE_CACHE_SIZE -
-                                        partial_page);
 
                 /* Wait for the next buffer to become available */
                 bh = fsg->next_buffhd_to_fill;
@@ -1196,7 +1210,7 @@ static int do_read(struct fsg_dev *fsg)
                 if (amount == 0) {
                         curlun->sense_data =
                                         SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
-                        curlun->sense_data_info = file_offset >> 9;
+                        curlun->sense_data_info = file_offset >> curlun->blkbits;
                         curlun->info_valid = 1;
                         bh->inreq->length = 0;
                         bh->state = BUF_STATE_FULL;
@@ -1221,18 +1235,23 @@ static int do_read(struct fsg_dev *fsg)
                 } else if (nread < amount) {
                         LDBG(curlun, "partial file read: %d/%u\n",
                                         (int) nread, amount);
-                        nread -= (nread & 511); // Round down to a block
+                        nread = round_down(nread, curlun->blksize);
                 }
                 file_offset  += nread;
                 amount_left  -= nread;
                 fsg->residue -= nread;
+
+                /* Except at the end of the transfer, nread will be
+                 * equal to the buffer size, which is divisible by the
+                 * bulk-in maxpacket size.
+                 */
                 bh->inreq->length = nread;
                 bh->state = BUF_STATE_FULL;
 
                 /* If an error occurred, report it and its position */
                 if (nread < amount) {
                         curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
-                        curlun->sense_data_info = file_offset >> 9;
+                        curlun->sense_data_info = file_offset >> curlun->blkbits;
                         curlun->info_valid = 1;
                         break;
                 }
@@ -1262,7 +1281,6 @@ static int do_write(struct fsg_dev *fsg)
         u32                     amount_left_to_req, amount_left_to_write;
         loff_t                  usb_offset, file_offset, file_offset_tmp;
         unsigned int            amount;
-        unsigned int            partial_page;
         ssize_t                 nwritten;
         int                     rc;
 
@@ -1303,7 +1321,7 @@ static int do_write(struct fsg_dev *fsg)
 
         /* Carry out the file writes */
         get_some_more = 1;
-        file_offset = usb_offset = ((loff_t) lba) << 9;
+        file_offset = usb_offset = ((loff_t) lba) << curlun->blkbits;
         amount_left_to_req = amount_left_to_write = fsg->data_size_from_cmnd;
 
         while (amount_left_to_write > 0) {
@@ -1313,38 +1331,20 @@ static int do_write(struct fsg_dev *fsg)
                 if (bh->state == BUF_STATE_EMPTY && get_some_more) {
 
                         /* Figure out how much we want to get:
-                         * Try to get the remaining amount.
-                         * But don't get more than the buffer size.
-                         * And don't try to go past the end of the file.
-                         * If we're not at a page boundary,
-                         *      don't go past the next page.
-                         * If this means getting 0, then we were asked
-                         *      to write past the end of file.
-                         * Finally, round down to a block boundary. */
+                         * Try to get the remaining amount,
+                         * but not more than the buffer size.
+                         */
                         amount = min(amount_left_to_req, mod_data.buflen);
-                        amount = min((loff_t) amount, curlun->file_length -
-                                        usb_offset);
-                        partial_page = usb_offset & (PAGE_CACHE_SIZE - 1);
-                        if (partial_page > 0)
-                                amount = min(amount,
-        (unsigned int) PAGE_CACHE_SIZE - partial_page);
-
-                        if (amount == 0) {
+
+                        /* Beyond the end of the backing file? */
+                        if (usb_offset >= curlun->file_length) {
                                 get_some_more = 0;
                                 curlun->sense_data =
                                         SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
-                                curlun->sense_data_info = usb_offset >> 9;
+                                curlun->sense_data_info = usb_offset >> curlun->blkbits;
                                 curlun->info_valid = 1;
                                 continue;
                         }
-                        amount -= (amount & 511);
-                        if (amount == 0) {
-
-                                /* Why were we were asked to transfer a
-                                 * partial block? */
-                                get_some_more = 0;
-                                continue;
-                        }
 
                         /* Get the next buffer */
                         usb_offset += amount;
@@ -1353,11 +1353,11 @@ static int do_write(struct fsg_dev *fsg)
                         if (amount_left_to_req == 0)
                                 get_some_more = 0;
 
-                        /* amount is always divisible by 512, hence by
-                         * the bulk-out maxpacket size */
-                        bh->outreq->length = bh->bulk_out_intended_length =
-                                        amount;
-                        bh->outreq->short_not_ok = 1;
+                        /* Except at the end of the transfer, amount will be
+                         * equal to the buffer size, which is divisible by
+                         * the bulk-out maxpacket size.
+                         */
+                        set_bulk_out_req_length(fsg, bh, amount);
                         start_transfer(fsg, fsg->bulk_out, bh->outreq,
                                         &bh->outreq_busy, &bh->state);
                         fsg->next_buffhd_to_fill = bh->next;
@@ -1376,7 +1376,7 @@ static int do_write(struct fsg_dev *fsg)
                         /* Did something go wrong with the transfer? */
                         if (bh->outreq->status != 0) {
                                 curlun->sense_data = SS_COMMUNICATION_FAILURE;
-                                curlun->sense_data_info = file_offset >> 9;
+                                curlun->sense_data_info = file_offset >> curlun->blkbits;
                                 curlun->info_valid = 1;
                                 break;
                         }
@@ -1390,6 +1390,16 @@ static int do_write(struct fsg_dev *fsg)
                                 amount = curlun->file_length - file_offset;
                         }
 
+                        /* Don't accept excess data.  The spec doesn't say
+                         * what to do in this case.  We'll ignore the error.
+                         */
+                        amount = min(amount, bh->bulk_out_intended_length);
+
+                        /* Don't write a partial block */
+                        amount = round_down(amount, curlun->blksize);
+                        if (amount == 0)
+                                goto empty_write;
+
                         /* Perform the write */
                         file_offset_tmp = file_offset;
                         nwritten = vfs_write(curlun->filp,
@@ -1408,8 +1418,7 @@ static int do_write(struct fsg_dev *fsg)
                         } else if (nwritten < amount) {
                                 LDBG(curlun, "partial file write: %d/%u\n",
                                                 (int) nwritten, amount);
-                                nwritten -= (nwritten & 511);
-                                                // Round down to a block
+                                nwritten = round_down(nwritten, curlun->blksize);
                         }
                         file_offset += nwritten;
                         amount_left_to_write -= nwritten;
@@ -1418,13 +1427,14 @@ static int do_write(struct fsg_dev *fsg)
                         /* If an error occurred, report it and its position */
                         if (nwritten < amount) {
                                 curlun->sense_data = SS_WRITE_ERROR;
-                                curlun->sense_data_info = file_offset >> 9;
+                                curlun->sense_data_info = file_offset >> curlun->blkbits;
                                 curlun->info_valid = 1;
                                 break;
                         }
 
+ empty_write:
                         /* Did the host decide to stop early? */
-                        if (bh->outreq->actual != bh->outreq->length) {
+                        if (bh->outreq->actual < bh->bulk_out_intended_length) {
                                 fsg->short_packet_received = 1;
                                 break;
                         }
@@ -1500,8 +1510,8 @@ static int do_verify(struct fsg_dev *fsg)
                 return -EIO;            // No default reply
 
         /* Prepare to carry out the file verify */
-        amount_left = verification_length << 9;
-        file_offset = ((loff_t) lba) << 9;
+        amount_left = verification_length << curlun->blkbits;
+        file_offset = ((loff_t) lba) << curlun->blkbits;
 
         /* Write out all the dirty buffers before invalidating them */
         fsg_lun_fsync_sub(curlun);
@@ -1519,15 +1529,14 @@ static int do_verify(struct fsg_dev *fsg)
                  * Try to read the remaining amount, but not more than
                  * the buffer size.
                  * And don't try to read past the end of the file.
-                 * If this means reading 0 then we were asked to read
-                 * past the end of file. */
+                 */
                 amount = min((unsigned int) amount_left, mod_data.buflen);
                 amount = min((loff_t) amount,
                                 curlun->file_length - file_offset);
                 if (amount == 0) {
                         curlun->sense_data =
                                         SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
-                        curlun->sense_data_info = file_offset >> 9;
+                        curlun->sense_data_info = file_offset >> curlun->blkbits;
                         curlun->info_valid = 1;
                         break;
                 }
@@ -1550,11 +1559,11 @@ static int do_verify(struct fsg_dev *fsg)
                 } else if (nread < amount) {
                         LDBG(curlun, "partial file verify: %d/%u\n",
                                         (int) nread, amount);
-                        nread -= (nread & 511); // Round down to a sector
+                        nread = round_down(nread, curlun->blksize);
                 }
                 if (nread == 0) {
                         curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
-                        curlun->sense_data_info = file_offset >> 9;
+                        curlun->sense_data_info = file_offset >> curlun->blkbits;
                         curlun->info_valid = 1;
                         break;
                 }
@@ -1668,7 +1677,7 @@ static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh)
 
         put_unaligned_be32(curlun->num_sectors - 1, &buf[0]);
                                                 /* Max logical block */
-        put_unaligned_be32(512, &buf[4]);       /* Block length */
+        put_unaligned_be32(curlun->blksize, &buf[4]);   /* Block length */
         return 8;
 }
 
@@ -1890,7 +1899,7 @@ static int do_read_format_capacities(struct fsg_dev *fsg,
 
         put_unaligned_be32(curlun->num_sectors, &buf[0]);
                                                 /* Number of blocks */
-        put_unaligned_be32(512, &buf[4]);       /* Block length */
+        put_unaligned_be32(curlun->blksize, &buf[4]);   /* Block length */
         buf[4] = 0x02;                          /* Current capacity */
         return 12;
 }
@@ -1969,7 +1978,7 @@ static int throw_away_data(struct fsg_dev *fsg)
                         fsg->next_buffhd_to_drain = bh->next;
 
                         /* A short packet or an error ends everything */
-                        if (bh->outreq->actual != bh->outreq->length ||
+                        if (bh->outreq->actual < bh->bulk_out_intended_length ||
                                         bh->outreq->status != 0) {
                                 raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT);
                                 return -EINTR;
@@ -1983,11 +1992,11 @@ static int throw_away_data(struct fsg_dev *fsg)
                         amount = min(fsg->usb_amount_left,
                                         (u32) mod_data.buflen);
 
-                        /* amount is always divisible by 512, hence by
-                         * the bulk-out maxpacket size */
-                        bh->outreq->length = bh->bulk_out_intended_length =
-                                        amount;
-                        bh->outreq->short_not_ok = 1;
+                        /* Except at the end of the transfer, amount will be
+                         * equal to the buffer size, which is divisible by
+                         * the bulk-out maxpacket size.
+                         */
+                        set_bulk_out_req_length(fsg, bh, amount);
                         start_transfer(fsg, fsg->bulk_out, bh->outreq,
                                         &bh->outreq_busy, &bh->state);
                         fsg->next_buffhd_to_fill = bh->next;
@@ -2415,7 +2424,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
 
         case READ_6:
                 i = fsg->cmnd[4];
-                fsg->data_size_from_cmnd = (i == 0 ? 256 : i) << 9;
+                fsg->data_size_from_cmnd = (i == 0 ? 256 : i) << fsg->curlun->blkbits;
                 if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST,
                                 (7<<1) | (1<<4), 1,
                                 "READ(6)")) == 0)
@@ -2424,7 +2433,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
 
         case READ_10:
                 fsg->data_size_from_cmnd =
-                                get_unaligned_be16(&fsg->cmnd[7]) << 9;
+                                get_unaligned_be16(&fsg->cmnd[7]) << fsg->curlun->blkbits;
                 if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
                                 (1<<1) | (0xf<<2) | (3<<7), 1,
                                 "READ(10)")) == 0)
@@ -2433,7 +2442,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
 
         case READ_12:
                 fsg->data_size_from_cmnd =
-                                get_unaligned_be32(&fsg->cmnd[6]) << 9;
+                                get_unaligned_be32(&fsg->cmnd[6]) << fsg->curlun->blkbits;
                 if ((reply = check_command(fsg, 12, DATA_DIR_TO_HOST,
                                 (1<<1) | (0xf<<2) | (0xf<<6), 1,
                                 "READ(12)")) == 0)
@@ -2519,7 +2528,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
 
         case WRITE_6:
                 i = fsg->cmnd[4];
-                fsg->data_size_from_cmnd = (i == 0 ? 256 : i) << 9;
+                fsg->data_size_from_cmnd = (i == 0 ? 256 : i) << fsg->curlun->blkbits;
                 if ((reply = check_command(fsg, 6, DATA_DIR_FROM_HOST,
                                 (7<<1) | (1<<4), 1,
                                 "WRITE(6)")) == 0)
@@ -2528,7 +2537,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
 
         case WRITE_10:
                 fsg->data_size_from_cmnd =
-                                get_unaligned_be16(&fsg->cmnd[7]) << 9;
+                                get_unaligned_be16(&fsg->cmnd[7]) << fsg->curlun->blkbits;
                 if ((reply = check_command(fsg, 10, DATA_DIR_FROM_HOST,
                                 (1<<1) | (0xf<<2) | (3<<7), 1,
                                 "WRITE(10)")) == 0)
@@ -2537,7 +2546,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
 
         case WRITE_12:
                 fsg->data_size_from_cmnd =
-                                get_unaligned_be32(&fsg->cmnd[6]) << 9;
+                                get_unaligned_be32(&fsg->cmnd[6]) << fsg->curlun->blkbits;
                 if ((reply = check_command(fsg, 12, DATA_DIR_FROM_HOST,
                                 (1<<1) | (0xf<<2) | (0xf<<6), 1,
                                 "WRITE(12)")) == 0)
@@ -2666,7 +2675,6 @@ static int get_next_command(struct fsg_dev *fsg)
 
                 /* Queue a request to read a Bulk-only CBW */
                 set_bulk_out_req_length(fsg, bh, USB_BULK_CB_WRAP_LEN);
-                bh->outreq->short_not_ok = 1;
                 start_transfer(fsg, fsg->bulk_out, bh->outreq,
                                 &bh->outreq_busy, &bh->state);
 
@@ -2752,7 +2760,7 @@ static int do_set_interface(struct fsg_dev *fsg, int altsetting)
 
 reset:
         /* Deallocate the requests */
-        for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
+        for (i = 0; i < fsg_num_buffers; ++i) {
                 struct fsg_buffhd *bh = &fsg->buffhds[i];
 
                 if (bh->inreq) {
@@ -2791,29 +2799,32 @@ reset:
 
         /* Enable the endpoints */
         d = fsg_ep_desc(fsg->gadget,
-                        &fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc);
+                        &fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc,
+                        &fsg_ss_bulk_in_desc);
         if ((rc = enable_endpoint(fsg, fsg->bulk_in, d)) != 0)
                 goto reset;
         fsg->bulk_in_enabled = 1;
 
         d = fsg_ep_desc(fsg->gadget,
-                        &fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc);
+                        &fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc,
+                        &fsg_ss_bulk_out_desc);
         if ((rc = enable_endpoint(fsg, fsg->bulk_out, d)) != 0)
                 goto reset;
         fsg->bulk_out_enabled = 1;
-        fsg->bulk_out_maxpacket = le16_to_cpu(d->wMaxPacketSize);
+        fsg->bulk_out_maxpacket = usb_endpoint_maxp(d);
         clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
 
         if (transport_is_cbi()) {
                 d = fsg_ep_desc(fsg->gadget,
-                                &fsg_fs_intr_in_desc, &fsg_hs_intr_in_desc);
+                                &fsg_fs_intr_in_desc, &fsg_hs_intr_in_desc,
+                                &fsg_ss_intr_in_desc);
                 if ((rc = enable_endpoint(fsg, fsg->intr_in, d)) != 0)
                         goto reset;
                 fsg->intr_in_enabled = 1;
         }
 
         /* Allocate the requests */
-        for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
+        for (i = 0; i < fsg_num_buffers; ++i) {
                 struct fsg_buffhd       *bh = &fsg->buffhds[i];
 
                 if ((rc = alloc_request(fsg, fsg->bulk_in, &bh->inreq)) != 0)
@@ -2862,17 +2873,10 @@ static int do_set_config(struct fsg_dev *fsg, u8 new_config)
                 fsg->config = new_config;
                 if ((rc = do_set_interface(fsg, 0)) != 0)
                         fsg->config = 0;        // Reset on errors
-                else {
-                        char *speed;
-
-                        switch (fsg->gadget->speed) {
-                        case USB_SPEED_LOW:     speed = "low";  break;
-                        case USB_SPEED_FULL:    speed = "full"; break;
-                        case USB_SPEED_HIGH:    speed = "high"; break;
-                        default:                speed = "?";    break;
-                        }
-                        INFO(fsg, "%s speed config #%d\n", speed, fsg->config);
-                }
+                else
+                        INFO(fsg, "%s config #%d\n",
+                             usb_speed_string(fsg->gadget->speed),
+                             fsg->config);
         }
         return rc;
 }
@@ -2909,7 +2913,7 @@ static void handle_exception(struct fsg_dev *fsg)
         /* Cancel all the pending transfers */
         if (fsg->intreq_busy)
                 usb_ep_dequeue(fsg->intr_in, fsg->intreq);
-        for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
+        for (i = 0; i < fsg_num_buffers; ++i) {
                 bh = &fsg->buffhds[i];
                 if (bh->inreq_busy)
                         usb_ep_dequeue(fsg->bulk_in, bh->inreq);
@@ -2920,7 +2924,7 @@ static void handle_exception(struct fsg_dev *fsg)
         /* Wait until everything is idle */
         for (;;) {
                 num_active = fsg->intreq_busy;
-                for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
+                for (i = 0; i < fsg_num_buffers; ++i) {
                         bh = &fsg->buffhds[i];
                         num_active += bh->inreq_busy + bh->outreq_busy;
                 }
@@ -2942,7 +2946,7 @@ static void handle_exception(struct fsg_dev *fsg)
          * state, and the exception.  Then invoke the handler. */
         spin_lock_irq(&fsg->lock);
 
-        for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
+        for (i = 0; i < fsg_num_buffers; ++i) {
                 bh = &fsg->buffhds[i];
                 bh->state = BUF_STATE_EMPTY;
         }
@@ -3149,6 +3153,15 @@ static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget)
         DBG(fsg, "unbind\n");
         clear_bit(REGISTERED, &fsg->atomic_bitflags);
 
+        /* If the thread isn't already dead, tell it to exit now */
+        if (fsg->state != FSG_STATE_TERMINATED) {
+                raise_exception(fsg, FSG_STATE_EXIT);
+                wait_for_completion(&fsg->thread_notifier);
+
+                /* The cleanup routine waits for this completion also */
+                complete(&fsg->thread_notifier);
+        }
+
         /* Unregister the sysfs attribute files and the LUNs */
         for (i = 0; i < fsg->nluns; ++i) {
                 curlun = &fsg->luns[i];
@@ -3162,17 +3175,8 @@ static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget)
                 }
         }
 
-        /* If the thread isn't already dead, tell it to exit now */
-        if (fsg->state != FSG_STATE_TERMINATED) {
-                raise_exception(fsg, FSG_STATE_EXIT);
-                wait_for_completion(&fsg->thread_notifier);
-
-                /* The cleanup routine waits for this completion also */
-                complete(&fsg->thread_notifier);
-        }
-
         /* Free the data buffers */
-        for (i = 0; i < FSG_NUM_BUFFERS; ++i)
+        for (i = 0; i < fsg_num_buffers; ++i)
                 kfree(fsg->buffhds[i].buf);
 
         /* Free the request and buffer for endpoint 0 */
@@ -3445,6 +3449,24 @@ static int __init fsg_bind(struct usb_gadget *gadget)
                         fsg_fs_intr_in_desc.bEndpointAddress;
         }
 
+        if (gadget_is_superspeed(gadget)) {
+                unsigned                max_burst;
+
+                fsg_ss_function[i + FSG_SS_FUNCTION_PRE_EP_ENTRIES] = NULL;
+
+                /* Calculate bMaxBurst, we know packet size is 1024 */
+                max_burst = min_t(unsigned, mod_data.buflen / 1024, 15);
+
+                /* Assume endpoint addresses are the same for both speeds */
+                fsg_ss_bulk_in_desc.bEndpointAddress =
+                        fsg_fs_bulk_in_desc.bEndpointAddress;
+                fsg_ss_bulk_in_comp_desc.bMaxBurst = max_burst;
+
+                fsg_ss_bulk_out_desc.bEndpointAddress =
+                        fsg_fs_bulk_out_desc.bEndpointAddress;
+                fsg_ss_bulk_out_comp_desc.bMaxBurst = max_burst;
+        }
+
         if (gadget_is_otg(gadget))
                 fsg_otg_desc.bmAttributes |= USB_OTG_HNP;
 
@@ -3460,7 +3482,7 @@ static int __init fsg_bind(struct usb_gadget *gadget)
         req->complete = ep0_complete;
 
         /* Allocate the data buffers */
-        for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
+        for (i = 0; i < fsg_num_buffers; ++i) {
                 struct fsg_buffhd       *bh = &fsg->buffhds[i];
 
                 /* Allocate for the bulk-in endpoint.  We assume that
@@ -3471,7 +3493,7 @@ static int __init fsg_bind(struct usb_gadget *gadget)
                         goto out;
                 bh->next = bh + 1;
         }
-        fsg->buffhds[FSG_NUM_BUFFERS - 1].next = &fsg->buffhds[0];
+        fsg->buffhds[fsg_num_buffers - 1].next = &fsg->buffhds[0];
 
         /* This should reflect the actual gadget power source */
         usb_gadget_set_selfpowered(gadget);
@@ -3561,11 +3583,7 @@ static void fsg_resume(struct usb_gadget *gadget)
 /*-------------------------------------------------------------------------*/
 
 static struct usb_gadget_driver         fsg_driver = {
-#ifdef CONFIG_USB_GADGET_DUALSPEED
-        .speed          = USB_SPEED_HIGH,
-#else
-        .speed          = USB_SPEED_FULL,
-#endif
+        .speed          = USB_SPEED_SUPER,
         .function       = (char *) fsg_string_product,
         .unbind         = fsg_unbind,
         .disconnect     = fsg_disconnect,
@@ -3587,7 +3605,9 @@ static int __init fsg_alloc(void)
 {
         struct fsg_dev          *fsg;
 
-        fsg = kzalloc(sizeof *fsg, GFP_KERNEL);
+        fsg = kzalloc(sizeof *fsg +
+                      fsg_num_buffers * sizeof *(fsg->buffhds), GFP_KERNEL);
+
         if (!fsg)
                 return -ENOMEM;
         spin_lock_init(&fsg->lock);
@@ -3605,6 +3625,10 @@ static int __init fsg_init(void)
         int             rc;
         struct fsg_dev  *fsg;
 
+        rc = fsg_num_buffers_validate();
+        if (rc != 0)
+                return rc;
+
         if ((rc = fsg_alloc()) != 0)
                 return rc;
         fsg = the_fsg;
diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c
index 3bf872e1ad39..2a03e4de11c1 100644
--- a/drivers/usb/gadget/fsl_qe_udc.c
+++ b/drivers/usb/gadget/fsl_qe_udc.c
@@ -540,7 +540,7 @@ static int qe_ep_init(struct qe_udc *udc,
         int reval = 0;
         u16 max = 0;
 
-        max = le16_to_cpu(desc->wMaxPacketSize);
+        max = usb_endpoint_maxp(desc);
 
         /* check the max package size validate for this endpoint */
         /* Refer to USB2.0 spec table 9-13,
diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c
index de24a4233c25..b2c44e1d5813 100644
--- a/drivers/usb/gadget/fsl_udc_core.c
+++ b/drivers/usb/gadget/fsl_udc_core.c
@@ -559,7 +559,7 @@ static int fsl_ep_enable(struct usb_ep *_ep,
         if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN))
                 return -ESHUTDOWN;
 
-        max = le16_to_cpu(desc->wMaxPacketSize);
+        max = usb_endpoint_maxp(desc);
 
         /* Disable automatic zlp generation.  Driver is responsible to indicate
          * explicitly through req->req.zero.  This is needed to enable multi-td
@@ -1715,34 +1715,31 @@ static void dtd_complete_irq(struct fsl_udc *udc)
         }
 }
 
+static inline enum usb_device_speed portscx_device_speed(u32 reg)
+{
+        switch (speed & PORTSCX_PORT_SPEED_MASK) {
+        case PORTSCX_PORT_SPEED_HIGH:
+                return USB_SPEED_HIGH;
+        case PORTSCX_PORT_SPEED_FULL:
+                return USB_SPEED_FULL;
+        case PORTSCX_PORT_SPEED_LOW:
+                return USB_SPEED_LOW;
+        default:
+                return USB_SPEED_UNKNOWN;
+        }
+}
+
 /* Process a port change interrupt */
 static void port_change_irq(struct fsl_udc *udc)
 {
-        u32 speed;
-
         if (udc->bus_reset)
                 udc->bus_reset = 0;
 
         /* Bus resetting is finished */
-        if (!(fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET)) {
+        if (!(fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET))
                 /* Get the speed */
-                speed = (fsl_readl(&dr_regs->portsc1)
-                                & PORTSCX_PORT_SPEED_MASK);
-                switch (speed) {
-                case PORTSCX_PORT_SPEED_HIGH:
-                        udc->gadget.speed = USB_SPEED_HIGH;
-                        break;
-                case PORTSCX_PORT_SPEED_FULL:
-                        udc->gadget.speed = USB_SPEED_FULL;
-                        break;
-                case PORTSCX_PORT_SPEED_LOW:
-                        udc->gadget.speed = USB_SPEED_LOW;
-                        break;
-                default:
-                        udc->gadget.speed = USB_SPEED_UNKNOWN;
-                        break;
-                }
-        }
+                udc->gadget.speed =
+                        portscx_device_speed(fsl_readl(&dr_regs->portsc1));
 
         /* Update USB state */
         if (!udc->resume_state)
@@ -2167,20 +2164,8 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count,
                         default:
                                 s = "None"; break;
                         }
-                        s;} ), ( {
-                        char *s;
-                        switch (tmp_reg & PORTSCX_PORT_SPEED_UNDEF) {
-                        case PORTSCX_PORT_SPEED_FULL:
-                                s = "Full Speed"; break;
-                        case PORTSCX_PORT_SPEED_LOW:
-                                s = "Low Speed"; break;
-                        case PORTSCX_PORT_SPEED_HIGH:
-                                s = "High Speed"; break;
-                        default:
-                                s = "Undefined"; break;
-                        }
-                        s;
-                } ),
+                        s;} ),
+                usb_speed_string(portscx_device_speed(tmp_reg)),
                 (tmp_reg & PORTSCX_PHY_LOW_POWER_SPD) ?
                 "Normal PHY mode" : "Low power mode",
                 (tmp_reg & PORTSCX_PORT_RESET) ? "In Reset" :
diff --git a/drivers/usb/gadget/fusb300_udc.c b/drivers/usb/gadget/fusb300_udc.c
index 4ec888f90002..e593f2849fa9 100644
--- a/drivers/usb/gadget/fusb300_udc.c
+++ b/drivers/usb/gadget/fusb300_udc.c
@@ -8,16 +8,6 @@
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
  */
 #include <linux/dma-mapping.h>
 #include <linux/err.h>
@@ -220,7 +210,7 @@ static int config_ep(struct fusb300_ep *ep,
 
         info.type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
         info.dir_in = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? 1 : 0;
-        info.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+        info.maxpacket = usb_endpoint_maxp(desc);
         info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
 
         if ((info.type == USB_ENDPOINT_XFER_INT) ||
@@ -1479,7 +1469,7 @@ static int __init fusb300_probe(struct platform_device *pdev)
         fusb300->gadget.name = udc_name;
         fusb300->reg = reg;
 
-        ret = request_irq(ires->start, fusb300_irq, IRQF_DISABLED | IRQF_SHARED,
+        ret = request_irq(ires->start, fusb300_irq, IRQF_SHARED,
                           udc_name, fusb300);
         if (ret < 0) {
                 pr_err("request_irq error (%d)\n", ret);
@@ -1487,7 +1477,7 @@ static int __init fusb300_probe(struct platform_device *pdev)
         }
 
         ret = request_irq(ires1->start, fusb300_irq,
-                        IRQF_DISABLED | IRQF_SHARED, udc_name, fusb300);
+                        IRQF_SHARED, udc_name, fusb300);
         if (ret < 0) {
                 pr_err("request_irq1 error (%d)\n", ret);
                 goto clean_up;
diff --git a/drivers/usb/gadget/fusb300_udc.h b/drivers/usb/gadget/fusb300_udc.h
index f51aa2ef1f90..92745bd03064 100644
--- a/drivers/usb/gadget/fusb300_udc.h
+++ b/drivers/usb/gadget/fusb300_udc.h
@@ -8,16 +8,6 @@
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
  */
 
 
diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c
index 704c2800ac00..0519d77915ec 100644
--- a/drivers/usb/gadget/g_ffs.c
+++ b/drivers/usb/gadget/g_ffs.c
@@ -8,15 +8,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #define pr_fmt(fmt) "g_ffs: " fmt
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index f3a83cd0ef50..a8855d0b7f3b 100644
--- a/drivers/usb/gadget/gadget_chips.h
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -31,6 +31,7 @@
 #define gadget_is_ci13xxx_msm(g)        (!strcmp("ci13xxx_msm", (g)->name))
 #define gadget_is_ci13xxx_pci(g)        (!strcmp("ci13xxx_pci", (g)->name))
 #define gadget_is_dummy(g)              (!strcmp("dummy_udc", (g)->name))
+#define gadget_is_dwc3(g)               (!strcmp("dwc3-gadget", (g)->name))
 #define gadget_is_fsl_qe(g)             (!strcmp("fsl_qe_udc", (g)->name))
 #define gadget_is_fsl_usb2(g)           (!strcmp("fsl-usb2-udc", (g)->name))
 #define gadget_is_goku(g)               (!strcmp("goku_udc", (g)->name))
@@ -115,6 +116,8 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
                 return 0x30;
         else if (gadget_is_net2272(gadget))
                 return 0x31;
+        else if (gadget_is_dwc3(gadget))
+                return 0x32;
 
         return -ENOENT;
 }
diff --git a/drivers/usb/gadget/gmidi.c b/drivers/usb/gadget/gmidi.c
index 8b9220e128a7..8fcde37aa6d4 100644
--- a/drivers/usb/gadget/gmidi.c
+++ b/drivers/usb/gadget/gmidi.c
@@ -36,134 +36,43 @@
 
 #include "gadget_chips.h"
 
-
-/*
- * Kbuild is not very cooperative with respect to linking separately
- * compiled library objects into one module.  So for now we won't use
- * separate compilation ... ensuring init/exit sections work to shrink
- * the runtime footprint, and giving us at least some parts of what
- * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
- */
+#include "composite.c"
 #include "usbstring.c"
 #include "config.c"
 #include "epautoconf.c"
+#include "f_midi.c"
 
 /*-------------------------------------------------------------------------*/
 
-
 MODULE_AUTHOR("Ben Williamson");
 MODULE_LICENSE("GPL v2");
 
-#define DRIVER_VERSION "25 Jul 2006"
-
 static const char shortname[] = "g_midi";
 static const char longname[] = "MIDI Gadget";
 
 static int index = SNDRV_DEFAULT_IDX1;
-static char *id = SNDRV_DEFAULT_STR1;
-
-module_param(index, int, 0444);
+module_param(index, int, S_IRUGO);
 MODULE_PARM_DESC(index, "Index value for the USB MIDI Gadget adapter.");
-module_param(id, charp, 0444);
-MODULE_PARM_DESC(id, "ID string for the USB MIDI Gadget adapter.");
-
-/* Some systems will want different product identifiers published in the
- * device descriptor, either numbers or strings or both.  These string
- * parameters are in UTF-8 (superset of ASCII's 7 bit characters).
- */
-
-static ushort idVendor;
-module_param(idVendor, ushort, S_IRUGO);
-MODULE_PARM_DESC(idVendor, "USB Vendor ID");
-
-static ushort idProduct;
-module_param(idProduct, ushort, S_IRUGO);
-MODULE_PARM_DESC(idProduct, "USB Product ID");
-
-static ushort bcdDevice;
-module_param(bcdDevice, ushort, S_IRUGO);
-MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)");
-
-static char *iManufacturer;
-module_param(iManufacturer, charp, S_IRUGO);
-MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string");
-
-static char *iProduct;
-module_param(iProduct, charp, S_IRUGO);
-MODULE_PARM_DESC(iProduct, "USB Product string");
-
-static char *iSerialNumber;
-module_param(iSerialNumber, charp, S_IRUGO);
-MODULE_PARM_DESC(iSerialNumber, "SerialNumber");
-
-/*
- * this version autoconfigures as much as possible,
- * which is reasonable for most "bulk-only" drivers.
- */
-static const char *EP_IN_NAME;
-static const char *EP_OUT_NAME;
 
+static char *id = SNDRV_DEFAULT_STR1;
+module_param(id, charp, S_IRUGO);
+MODULE_PARM_DESC(id, "ID string for the USB MIDI Gadget adapter.");
 
-/* big enough to hold our biggest descriptor */
-#define USB_BUFSIZ 256
-
-
-/* This is a gadget, and the IN/OUT naming is from the host's perspective.
-   USB -> OUT endpoint -> rawmidi
-   USB <- IN endpoint  <- rawmidi */
-struct gmidi_in_port {
-        struct gmidi_device* dev;
-        int active;
-        uint8_t cable;          /* cable number << 4 */
-        uint8_t state;
-#define STATE_UNKNOWN   0
-#define STATE_1PARAM    1
-#define STATE_2PARAM_1  2
-#define STATE_2PARAM_2  3
-#define STATE_SYSEX_0   4
-#define STATE_SYSEX_1   5
-#define STATE_SYSEX_2   6
-        uint8_t data[2];
-};
-
-struct gmidi_device {
-        spinlock_t              lock;
-        struct usb_gadget       *gadget;
-        struct usb_request      *req;           /* for control responses */
-        u8                      config;
-        struct usb_ep           *in_ep, *out_ep;
-        struct snd_card         *card;
-        struct snd_rawmidi      *rmidi;
-        struct snd_rawmidi_substream *in_substream;
-        struct snd_rawmidi_substream *out_substream;
-
-        /* For the moment we only support one port in
-           each direction, but in_port is kept as a
-           separate struct so we can have more later. */
-        struct gmidi_in_port    in_port;
-        unsigned long           out_triggered;
-        struct tasklet_struct   tasklet;
-};
-
-static void gmidi_transmit(struct gmidi_device* dev, struct usb_request* req);
-
-
-#define DBG(d, fmt, args...) \
-        dev_dbg(&(d)->gadget->dev , fmt , ## args)
-#define VDBG(d, fmt, args...) \
-        dev_vdbg(&(d)->gadget->dev , fmt , ## args)
-#define ERROR(d, fmt, args...) \
-        dev_err(&(d)->gadget->dev , fmt , ## args)
-#define INFO(d, fmt, args...) \
-        dev_info(&(d)->gadget->dev , fmt , ## args)
-
-
-static unsigned buflen = 256;
-static unsigned qlen = 32;
-
+static unsigned int buflen = 256;
 module_param(buflen, uint, S_IRUGO);
+MODULE_PARM_DESC(buflen, "MIDI buffer length");
+
+static unsigned int qlen = 32;
 module_param(qlen, uint, S_IRUGO);
+MODULE_PARM_DESC(qlen, "USB read request queue length");
 
+static unsigned int in_ports = 1;
+module_param(in_ports, uint, S_IRUGO);
+MODULE_PARM_DESC(in_ports, "Number of MIDI input ports");
+
+static unsigned int out_ports = 1;
+module_param(out_ports, uint, S_IRUGO);
+MODULE_PARM_DESC(out_ports, "Number of MIDI output ports");
 
 /* Thanks to Grey Innovation for donating this product ID.
  *
@@ -173,1149 +82,124 @@ module_param(qlen, uint, S_IRUGO);
 #define DRIVER_VENDOR_NUM       0x17b3          /* Grey Innovation */
 #define DRIVER_PRODUCT_NUM      0x0004          /* Linux-USB "MIDI Gadget" */
 
+/* string IDs are assigned dynamically */
 
-/*
- * DESCRIPTORS ... most are static, but strings and (full)
- * configuration descriptors are built on demand.
- */
-
-#define STRING_MANUFACTURER     25
-#define STRING_PRODUCT          42
-#define STRING_SERIAL           101
-#define STRING_MIDI_GADGET      250
+#define STRING_MANUFACTURER_IDX         0
+#define STRING_PRODUCT_IDX              1
+#define STRING_DESCRIPTION_IDX          2
 
-/* We only have the one configuration, it's number 1. */
-#define GMIDI_CONFIG            1
-
-/* We have two interfaces- AudioControl and MIDIStreaming */
-#define GMIDI_AC_INTERFACE      0
-#define GMIDI_MS_INTERFACE      1
-#define GMIDI_NUM_INTERFACES    2
-
-DECLARE_UAC_AC_HEADER_DESCRIPTOR(1);
-DECLARE_USB_MIDI_OUT_JACK_DESCRIPTOR(1);
-DECLARE_USB_MS_ENDPOINT_DESCRIPTOR(1);
-
-/* B.1  Device Descriptor */
 static struct usb_device_descriptor device_desc = {
         .bLength =              USB_DT_DEVICE_SIZE,
         .bDescriptorType =      USB_DT_DEVICE,
-        .bcdUSB =               cpu_to_le16(0x0200),
+        .bcdUSB =               __constant_cpu_to_le16(0x0200),
         .bDeviceClass =         USB_CLASS_PER_INTERFACE,
-        .idVendor =             cpu_to_le16(DRIVER_VENDOR_NUM),
-        .idProduct =            cpu_to_le16(DRIVER_PRODUCT_NUM),
-        .iManufacturer =        STRING_MANUFACTURER,
-        .iProduct =             STRING_PRODUCT,
+        .idVendor =             __constant_cpu_to_le16(DRIVER_VENDOR_NUM),
+        .idProduct =            __constant_cpu_to_le16(DRIVER_PRODUCT_NUM),
+        /* .iManufacturer =     DYNAMIC */
+        /* .iProduct =          DYNAMIC */
         .bNumConfigurations =   1,
 };
 
-/* B.2  Configuration Descriptor */
-static struct usb_config_descriptor config_desc = {
-        .bLength =              USB_DT_CONFIG_SIZE,
-        .bDescriptorType =      USB_DT_CONFIG,
-        /* compute wTotalLength on the fly */
-        .bNumInterfaces =       GMIDI_NUM_INTERFACES,
-        .bConfigurationValue =  GMIDI_CONFIG,
-        .iConfiguration =       STRING_MIDI_GADGET,
-        /*
-         * FIXME: When embedding this driver in a device,
-         * these need to be set to reflect the actual
-         * power properties of the device. Is it selfpowered?
-         */
-        .bmAttributes =         USB_CONFIG_ATT_ONE,
-        .bMaxPower =            CONFIG_USB_GADGET_VBUS_DRAW / 2,
-};
-
-/* B.3.1  Standard AC Interface Descriptor */
-static const struct usb_interface_descriptor ac_interface_desc = {
-        .bLength =              USB_DT_INTERFACE_SIZE,
-        .bDescriptorType =      USB_DT_INTERFACE,
-        .bInterfaceNumber =     GMIDI_AC_INTERFACE,
-        .bNumEndpoints =        0,
-        .bInterfaceClass =      USB_CLASS_AUDIO,
-        .bInterfaceSubClass =   USB_SUBCLASS_AUDIOCONTROL,
-        .iInterface =           STRING_MIDI_GADGET,
-};
-
-/* B.3.2  Class-Specific AC Interface Descriptor */
-static const struct uac1_ac_header_descriptor_1 ac_header_desc = {
-        .bLength =              UAC_DT_AC_HEADER_SIZE(1),
-        .bDescriptorType =      USB_DT_CS_INTERFACE,
-        .bDescriptorSubtype =   USB_MS_HEADER,
-        .bcdADC =               cpu_to_le16(0x0100),
-        .wTotalLength =         cpu_to_le16(UAC_DT_AC_HEADER_SIZE(1)),
-        .bInCollection =        1,
-        .baInterfaceNr = {
-                [0] =           GMIDI_MS_INTERFACE,
-        }
-};
-
-/* B.4.1  Standard MS Interface Descriptor */
-static const struct usb_interface_descriptor ms_interface_desc = {
-        .bLength =              USB_DT_INTERFACE_SIZE,
-        .bDescriptorType =      USB_DT_INTERFACE,
-        .bInterfaceNumber =     GMIDI_MS_INTERFACE,
-        .bNumEndpoints =        2,
-        .bInterfaceClass =      USB_CLASS_AUDIO,
-        .bInterfaceSubClass =   USB_SUBCLASS_MIDISTREAMING,
-        .iInterface =           STRING_MIDI_GADGET,
+static struct usb_string strings_dev[] = {
+        [STRING_MANUFACTURER_IDX].s     = "Grey Innovation",
+        [STRING_PRODUCT_IDX].s          = "MIDI Gadget",
+        [STRING_DESCRIPTION_IDX].s      = "MIDI",
+        {  } /* end of list */
 };
 
-/* B.4.2  Class-Specific MS Interface Descriptor */
-static const struct usb_ms_header_descriptor ms_header_desc = {
-        .bLength =              USB_DT_MS_HEADER_SIZE,
-        .bDescriptorType =      USB_DT_CS_INTERFACE,
-        .bDescriptorSubtype =   USB_MS_HEADER,
-        .bcdMSC =               cpu_to_le16(0x0100),
-        .wTotalLength =         cpu_to_le16(USB_DT_MS_HEADER_SIZE
-                                + 2*USB_DT_MIDI_IN_SIZE
-                                + 2*USB_DT_MIDI_OUT_SIZE(1)),
-};
-
-#define JACK_IN_EMB     1
-#define JACK_IN_EXT     2
-#define JACK_OUT_EMB    3
-#define JACK_OUT_EXT    4
-
-/* B.4.3  MIDI IN Jack Descriptors */
-static const struct usb_midi_in_jack_descriptor jack_in_emb_desc = {
-        .bLength =              USB_DT_MIDI_IN_SIZE,
-        .bDescriptorType =      USB_DT_CS_INTERFACE,
-        .bDescriptorSubtype =   USB_MS_MIDI_IN_JACK,
-        .bJackType =            USB_MS_EMBEDDED,
-        .bJackID =              JACK_IN_EMB,
-};
-
-static const struct usb_midi_in_jack_descriptor jack_in_ext_desc = {
-        .bLength =              USB_DT_MIDI_IN_SIZE,
-        .bDescriptorType =      USB_DT_CS_INTERFACE,
-        .bDescriptorSubtype =   USB_MS_MIDI_IN_JACK,
-        .bJackType =            USB_MS_EXTERNAL,
-        .bJackID =              JACK_IN_EXT,
-};
-
-/* B.4.4  MIDI OUT Jack Descriptors */
-static const struct usb_midi_out_jack_descriptor_1 jack_out_emb_desc = {
-        .bLength =              USB_DT_MIDI_OUT_SIZE(1),
-        .bDescriptorType =      USB_DT_CS_INTERFACE,
-        .bDescriptorSubtype =   USB_MS_MIDI_OUT_JACK,
-        .bJackType =            USB_MS_EMBEDDED,
-        .bJackID =              JACK_OUT_EMB,
-        .bNrInputPins =         1,
-        .pins = {
-                [0] = {
-                        .baSourceID =   JACK_IN_EXT,
-                        .baSourcePin =  1,
-                }
-        }
-};
-
-static const struct usb_midi_out_jack_descriptor_1 jack_out_ext_desc = {
-        .bLength =              USB_DT_MIDI_OUT_SIZE(1),
-        .bDescriptorType =      USB_DT_CS_INTERFACE,
-        .bDescriptorSubtype =   USB_MS_MIDI_OUT_JACK,
-        .bJackType =            USB_MS_EXTERNAL,
-        .bJackID =              JACK_OUT_EXT,
-        .bNrInputPins =         1,
-        .pins = {
-                [0] = {
-                        .baSourceID =   JACK_IN_EMB,
-                        .baSourcePin =  1,
-                }
-        }
-};
-
-/* B.5.1  Standard Bulk OUT Endpoint Descriptor */
-static struct usb_endpoint_descriptor bulk_out_desc = {
-        .bLength =              USB_DT_ENDPOINT_AUDIO_SIZE,
-        .bDescriptorType =      USB_DT_ENDPOINT,
-        .bEndpointAddress =     USB_DIR_OUT,
-        .bmAttributes =         USB_ENDPOINT_XFER_BULK,
-};
-
-/* B.5.2  Class-specific MS Bulk OUT Endpoint Descriptor */
-static const struct usb_ms_endpoint_descriptor_1 ms_out_desc = {
-        .bLength =              USB_DT_MS_ENDPOINT_SIZE(1),
-        .bDescriptorType =      USB_DT_CS_ENDPOINT,
-        .bDescriptorSubtype =   USB_MS_GENERAL,
-        .bNumEmbMIDIJack =      1,
-        .baAssocJackID = {
-                [0] =           JACK_IN_EMB,
-        }
-};
-
-/* B.6.1  Standard Bulk IN Endpoint Descriptor */
-static struct usb_endpoint_descriptor bulk_in_desc = {
-        .bLength =              USB_DT_ENDPOINT_AUDIO_SIZE,
-        .bDescriptorType =      USB_DT_ENDPOINT,
-        .bEndpointAddress =     USB_DIR_IN,
-        .bmAttributes =         USB_ENDPOINT_XFER_BULK,
-};
-
-/* B.6.2  Class-specific MS Bulk IN Endpoint Descriptor */
-static const struct usb_ms_endpoint_descriptor_1 ms_in_desc = {
-        .bLength =              USB_DT_MS_ENDPOINT_SIZE(1),
-        .bDescriptorType =      USB_DT_CS_ENDPOINT,
-        .bDescriptorSubtype =   USB_MS_GENERAL,
-        .bNumEmbMIDIJack =      1,
-        .baAssocJackID = {
-                [0] =           JACK_OUT_EMB,
-        }
-};
-
-static const struct usb_descriptor_header *gmidi_function [] = {
-        (struct usb_descriptor_header *)&ac_interface_desc,
-        (struct usb_descriptor_header *)&ac_header_desc,
-        (struct usb_descriptor_header *)&ms_interface_desc,
-
-        (struct usb_descriptor_header *)&ms_header_desc,
-        (struct usb_descriptor_header *)&jack_in_emb_desc,
-        (struct usb_descriptor_header *)&jack_in_ext_desc,
-        (struct usb_descriptor_header *)&jack_out_emb_desc,
-        (struct usb_descriptor_header *)&jack_out_ext_desc,
-        /* If you add more jacks, update ms_header_desc.wTotalLength */
-
-        (struct usb_descriptor_header *)&bulk_out_desc,
-        (struct usb_descriptor_header *)&ms_out_desc,
-        (struct usb_descriptor_header *)&bulk_in_desc,
-        (struct usb_descriptor_header *)&ms_in_desc,
-        NULL,
-};
-
-static char manufacturer[50];
-static char product_desc[40] = "MIDI Gadget";
-static char serial_number[20];
-
-/* static strings, in UTF-8 */
-static struct usb_string strings [] = {
-        { STRING_MANUFACTURER, manufacturer, },
-        { STRING_PRODUCT, product_desc, },
-        { STRING_SERIAL, serial_number, },
-        { STRING_MIDI_GADGET, longname, },
-        {  }                    /* end of list */
-};
-
-static struct usb_gadget_strings stringtab = {
+static struct usb_gadget_strings stringtab_dev = {
         .language       = 0x0409,       /* en-us */
-        .strings        = strings,
+        .strings        = strings_dev,
 };
 
-static int config_buf(struct usb_gadget *gadget,
-                u8 *buf, u8 type, unsigned index)
-{
-        int len;
-
-        /* only one configuration */
-        if (index != 0) {
-                return -EINVAL;
-        }
-        len = usb_gadget_config_buf(&config_desc,
-                        buf, USB_BUFSIZ, gmidi_function);
-        if (len < 0) {
-                return len;
-        }
-        ((struct usb_config_descriptor *)buf)->bDescriptorType = type;
-        return len;
-}
-
-static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length)
-{
-        struct usb_request      *req;
-
-        req = usb_ep_alloc_request(ep, GFP_ATOMIC);
-        if (req) {
-                req->length = length;
-                req->buf = kmalloc(length, GFP_ATOMIC);
-                if (!req->buf) {
-                        usb_ep_free_request(ep, req);
-                        req = NULL;
-                }
-        }
-        return req;
-}
-
-static void free_ep_req(struct usb_ep *ep, struct usb_request *req)
-{
-        kfree(req->buf);
-        usb_ep_free_request(ep, req);
-}
-
-static const uint8_t gmidi_cin_length[] = {
-        0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1
+static struct usb_gadget_strings *dev_strings[] = {
+        &stringtab_dev,
+        NULL,
 };
 
-/*
- * Receives a chunk of MIDI data.
- */
-static void gmidi_read_data(struct usb_ep *ep, int cable,
-                                   uint8_t *data, int length)
-{
-        struct gmidi_device *dev = ep->driver_data;
-        /* cable is ignored, because for now we only have one. */
-
-        if (!dev->out_substream) {
-                /* Nobody is listening - throw it on the floor. */
-                return;
-        }
-        if (!test_bit(dev->out_substream->number, &dev->out_triggered)) {
-                return;
-        }
-        snd_rawmidi_receive(dev->out_substream, data, length);
-}
-
-static void gmidi_handle_out_data(struct usb_ep *ep, struct usb_request *req)
-{
-        unsigned i;
-        u8 *buf = req->buf;
-
-        for (i = 0; i + 3 < req->actual; i += 4) {
-                if (buf[i] != 0) {
-                        int cable = buf[i] >> 4;
-                        int length = gmidi_cin_length[buf[i] & 0x0f];
-                        gmidi_read_data(ep, cable, &buf[i + 1], length);
-                }
-        }
-}
-
-static void gmidi_complete(struct usb_ep *ep, struct usb_request *req)
-{
-        struct gmidi_device *dev = ep->driver_data;
-        int status = req->status;
-
-        switch (status) {
-        case 0:                         /* normal completion */
-                if (ep == dev->out_ep) {
-                        /* we received stuff.
-                           req is queued again, below */
-                        gmidi_handle_out_data(ep, req);
-                } else if (ep == dev->in_ep) {
-                        /* our transmit completed.
-                           see if there's more to go.
-                           gmidi_transmit eats req, don't queue it again. */
-                        gmidi_transmit(dev, req);
-                        return;
-                }
-                break;
-
-        /* this endpoint is normally active while we're configured */
-        case -ECONNABORTED:             /* hardware forced ep reset */
-        case -ECONNRESET:               /* request dequeued */
-        case -ESHUTDOWN:                /* disconnect from host */
-                VDBG(dev, "%s gone (%d), %d/%d\n", ep->name, status,
-                                req->actual, req->length);
-                if (ep == dev->out_ep) {
-                        gmidi_handle_out_data(ep, req);
-                }
-                free_ep_req(ep, req);
-                return;
-
-        case -EOVERFLOW:                /* buffer overrun on read means that
-                                         * we didn't provide a big enough
-                                         * buffer.
-                                         */
-        default:
-                DBG(dev, "%s complete --> %d, %d/%d\n", ep->name,
-                                status, req->actual, req->length);
-                break;
-        case -EREMOTEIO:                /* short read */
-                break;
-        }
-
-        status = usb_ep_queue(ep, req, GFP_ATOMIC);
-        if (status) {
-                ERROR(dev, "kill %s:  resubmit %d bytes --> %d\n",
-                                ep->name, req->length, status);
-                usb_ep_set_halt(ep);
-                /* FIXME recover later ... somehow */
-        }
-}
-
-static int set_gmidi_config(struct gmidi_device *dev, gfp_t gfp_flags)
-{
-        int err = 0;
-        struct usb_request *req;
-        struct usb_ep *ep;
-        unsigned i;
-
-        dev->in_ep->desc = &bulk_in_desc;
-        err = usb_ep_enable(dev->in_ep);
-        if (err) {
-                ERROR(dev, "can't start %s: %d\n", dev->in_ep->name, err);
-                goto fail;
-        }
-        dev->in_ep->driver_data = dev;
-
-        dev->out_ep->desc = &bulk_out_desc;
-        err = usb_ep_enable(dev->out_ep);
-        if (err) {
-                ERROR(dev, "can't start %s: %d\n", dev->out_ep->name, err);
-                goto fail;
-        }
-        dev->out_ep->driver_data = dev;
-
-        /* allocate a bunch of read buffers and queue them all at once. */
-        ep = dev->out_ep;
-        for (i = 0; i < qlen && err == 0; i++) {
-                req = alloc_ep_req(ep, buflen);
-                if (req) {
-                        req->complete = gmidi_complete;
-                        err = usb_ep_queue(ep, req, GFP_ATOMIC);
-                        if (err) {
-                                DBG(dev, "%s queue req: %d\n", ep->name, err);
-                        }
-                } else {
-                        err = -ENOMEM;
-                }
-        }
-fail:
-        /* caller is responsible for cleanup on error */
-        return err;
-}
-
-
-static void gmidi_reset_config(struct gmidi_device *dev)
-{
-        if (dev->config == 0) {
-                return;
-        }
-
-        DBG(dev, "reset config\n");
-
-        /* just disable endpoints, forcing completion of pending i/o.
-         * all our completion handlers free their requests in this case.
-         */
-        usb_ep_disable(dev->in_ep);
-        usb_ep_disable(dev->out_ep);
-        dev->config = 0;
-}
-
-/* change our operational config.  this code must agree with the code
- * that returns config descriptors, and altsetting code.
- *
- * it's also responsible for power management interactions. some
- * configurations might not work with our current power sources.
- *
- * note that some device controller hardware will constrain what this
- * code can do, perhaps by disallowing more than one configuration or
- * by limiting configuration choices (like the pxa2xx).
- */
-static int
-gmidi_set_config(struct gmidi_device *dev, unsigned number, gfp_t gfp_flags)
-{
-        int result = 0;
-        struct usb_gadget *gadget = dev->gadget;
-
-#if 0
-        /* FIXME */
-        /* Hacking this bit out fixes a bug where on receipt of two
-           USB_REQ_SET_CONFIGURATION messages, we end up with no
-           buffered OUT requests waiting for data. This is clearly
-           hiding a bug elsewhere, because if the config didn't
-           change then we really shouldn't do anything. */
-        /* Having said that, when we do "change" from config 1
-           to config 1, we at least gmidi_reset_config() which
-           clears out any requests on endpoints, so it's not like
-           we leak or anything. */
-        if (number == dev->config) {
-                return 0;
-        }
-#endif
-
-        gmidi_reset_config(dev);
-
-        switch (number) {
-        case GMIDI_CONFIG:
-                result = set_gmidi_config(dev, gfp_flags);
-                break;
-        default:
-                result = -EINVAL;
-                /* FALL THROUGH */
-        case 0:
-                return result;
-        }
-
-        if (!result && (!dev->in_ep || !dev->out_ep)) {
-                result = -ENODEV;
-        }
-        if (result) {
-                gmidi_reset_config(dev);
-        } else {
-                char *speed;
-
-                switch (gadget->speed) {
-                case USB_SPEED_LOW:     speed = "low"; break;
-                case USB_SPEED_FULL:    speed = "full"; break;
-                case USB_SPEED_HIGH:    speed = "high"; break;
-                default:                speed = "?"; break;
-                }
-
-                dev->config = number;
-                INFO(dev, "%s speed\n", speed);
-        }
-        return result;
-}
-
-
-static void gmidi_setup_complete(struct usb_ep *ep, struct usb_request *req)
-{
-        if (req->status || req->actual != req->length) {
-                DBG((struct gmidi_device *) ep->driver_data,
-                                "setup complete --> %d, %d/%d\n",
-                                req->status, req->actual, req->length);
-        }
-}
-
-/*
- * The setup() callback implements all the ep0 functionality that's
- * not handled lower down, in hardware or the hardware driver (like
- * device and endpoint feature flags, and their status).  It's all
- * housekeeping for the gadget function we're implementing.  Most of
- * the work is in config-specific setup.
- */
-static int gmidi_setup(struct usb_gadget *gadget,
-                        const struct usb_ctrlrequest *ctrl)
-{
-        struct gmidi_device *dev = get_gadget_data(gadget);
-        struct usb_request *req = dev->req;
-        int value = -EOPNOTSUPP;
-        u16 w_index = le16_to_cpu(ctrl->wIndex);
-        u16 w_value = le16_to_cpu(ctrl->wValue);
-        u16 w_length = le16_to_cpu(ctrl->wLength);
-
-        /* usually this stores reply data in the pre-allocated ep0 buffer,
-         * but config change events will reconfigure hardware.
-         */
-        req->zero = 0;
-        switch (ctrl->bRequest) {
-
-        case USB_REQ_GET_DESCRIPTOR:
-                if (ctrl->bRequestType != USB_DIR_IN) {
-                        goto unknown;
-                }
-                switch (w_value >> 8) {
-
-                case USB_DT_DEVICE:
-                        device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
-                        value = min(w_length, (u16) sizeof(device_desc));
-                        memcpy(req->buf, &device_desc, value);
-                        break;
-                case USB_DT_CONFIG:
-                        value = config_buf(gadget, req->buf,
-                                        w_value >> 8,
-                                        w_value & 0xff);
-                        if (value >= 0) {
-                                value = min(w_length, (u16)value);
-                        }
-                        break;
-
-                case USB_DT_STRING:
-                        /* wIndex == language code.
-                         * this driver only handles one language, you can
-                         * add string tables for other languages, using
-                         * any UTF-8 characters
-                         */
-                        value = usb_gadget_get_string(&stringtab,
-                                        w_value & 0xff, req->buf);
-                        if (value >= 0) {
-                                value = min(w_length, (u16)value);
-                        }
-                        break;
-                }
-                break;
-
-        /* currently two configs, two speeds */
-        case USB_REQ_SET_CONFIGURATION:
-                if (ctrl->bRequestType != 0) {
-                        goto unknown;
-                }
-                if (gadget->a_hnp_support) {
-                        DBG(dev, "HNP available\n");
-                } else if (gadget->a_alt_hnp_support) {
-                        DBG(dev, "HNP needs a different root port\n");
-                } else {
-                        VDBG(dev, "HNP inactive\n");
-                }
-                spin_lock(&dev->lock);
-                value = gmidi_set_config(dev, w_value, GFP_ATOMIC);
-                spin_unlock(&dev->lock);
-                break;
-        case USB_REQ_GET_CONFIGURATION:
-                if (ctrl->bRequestType != USB_DIR_IN) {
-                        goto unknown;
-                }
-                *(u8 *)req->buf = dev->config;
-                value = min(w_length, (u16)1);
-                break;
-
-        /* until we add altsetting support, or other interfaces,
-         * only 0/0 are possible.  pxa2xx only supports 0/0 (poorly)
-         * and already killed pending endpoint I/O.
-         */
-        case USB_REQ_SET_INTERFACE:
-                if (ctrl->bRequestType != USB_RECIP_INTERFACE) {
-                        goto unknown;
-                }
-                spin_lock(&dev->lock);
-                if (dev->config && w_index < GMIDI_NUM_INTERFACES
-                        && w_value == 0)
-                {
-                        u8 config = dev->config;
-
-                        /* resets interface configuration, forgets about
-                         * previous transaction state (queued bufs, etc)
-                         * and re-inits endpoint state (toggle etc)
-                         * no response queued, just zero status == success.
-                         * if we had more than one interface we couldn't
-                         * use this "reset the config" shortcut.
-                         */
-                        gmidi_reset_config(dev);
-                        gmidi_set_config(dev, config, GFP_ATOMIC);
-                        value = 0;
-                }
-                spin_unlock(&dev->lock);
-                break;
-        case USB_REQ_GET_INTERFACE:
-                if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE)) {
-                        goto unknown;
-                }
-                if (!dev->config) {
-                        break;
-                }
-                if (w_index >= GMIDI_NUM_INTERFACES) {
-                        value = -EDOM;
-                        break;
-                }
-                *(u8 *)req->buf = 0;
-                value = min(w_length, (u16)1);
-                break;
-
-        default:
-unknown:
-                VDBG(dev, "unknown control req%02x.%02x v%04x i%04x l%d\n",
-                        ctrl->bRequestType, ctrl->bRequest,
-                        w_value, w_index, w_length);
-        }
-
-        /* respond with data transfer before status phase? */
-        if (value >= 0) {
-                req->length = value;
-                req->zero = value < w_length;
-                value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC);
-                if (value < 0) {
-                        DBG(dev, "ep_queue --> %d\n", value);
-                        req->status = 0;
-                        gmidi_setup_complete(gadget->ep0, req);
-                }
-        }
-
-        /* device either stalls (value < 0) or reports success */
-        return value;
-}
-
-static void gmidi_disconnect(struct usb_gadget *gadget)
-{
-        struct gmidi_device *dev = get_gadget_data(gadget);
-        unsigned long flags;
-
-        spin_lock_irqsave(&dev->lock, flags);
-        gmidi_reset_config(dev);
-
-        /* a more significant application might have some non-usb
-         * activities to quiesce here, saving resources like power
-         * or pushing the notification up a network stack.
-         */
-        spin_unlock_irqrestore(&dev->lock, flags);
-
-        /* next we may get setup() calls to enumerate new connections;
-         * or an unbind() during shutdown (including removing module).
-         */
-}
-
-static void /* __init_or_exit */ gmidi_unbind(struct usb_gadget *gadget)
-{
-        struct gmidi_device *dev = get_gadget_data(gadget);
-        struct snd_card *card;
-
-        DBG(dev, "unbind\n");
-
-        card = dev->card;
-        dev->card = NULL;
-        if (card) {
-                snd_card_free(card);
-        }
-
-        /* we've already been disconnected ... no i/o is active */
-        if (dev->req) {
-                dev->req->length = USB_BUFSIZ;
-                free_ep_req(gadget->ep0, dev->req);
-        }
-        kfree(dev);
-        set_gadget_data(gadget, NULL);
-}
-
-static int gmidi_snd_free(struct snd_device *device)
+static int __exit midi_unbind(struct usb_composite_dev *dev)
 {
         return 0;
 }
 
-static void gmidi_transmit_packet(struct usb_request *req, uint8_t p0,
-                                        uint8_t p1, uint8_t p2, uint8_t p3)
-{
-        unsigned length = req->length;
-        u8 *buf = (u8 *)req->buf + length;
-
-        buf[0] = p0;
-        buf[1] = p1;
-        buf[2] = p2;
-        buf[3] = p3;
-        req->length = length + 4;
-}
-
-/*
- * Converts MIDI commands to USB MIDI packets.
- */
-static void gmidi_transmit_byte(struct usb_request *req,
-                                struct gmidi_in_port *port, uint8_t b)
-{
-        uint8_t p0 = port->cable;
-
-        if (b >= 0xf8) {
-                gmidi_transmit_packet(req, p0 | 0x0f, b, 0, 0);
-        } else if (b >= 0xf0) {
-                switch (b) {
-                case 0xf0:
-                        port->data[0] = b;
-                        port->state = STATE_SYSEX_1;
-                        break;
-                case 0xf1:
-                case 0xf3:
-                        port->data[0] = b;
-                        port->state = STATE_1PARAM;
-                        break;
-                case 0xf2:
-                        port->data[0] = b;
-                        port->state = STATE_2PARAM_1;
-                        break;
-                case 0xf4:
-                case 0xf5:
-                        port->state = STATE_UNKNOWN;
-                        break;
-                case 0xf6:
-                        gmidi_transmit_packet(req, p0 | 0x05, 0xf6, 0, 0);
-                        port->state = STATE_UNKNOWN;
-                        break;
-                case 0xf7:
-                        switch (port->state) {
-                        case STATE_SYSEX_0:
-                                gmidi_transmit_packet(req,
-                                        p0 | 0x05, 0xf7, 0, 0);
-                                break;
-                        case STATE_SYSEX_1:
-                                gmidi_transmit_packet(req,
-                                        p0 | 0x06, port->data[0], 0xf7, 0);
-                                break;
-                        case STATE_SYSEX_2:
-                                gmidi_transmit_packet(req,
-                                        p0 | 0x07, port->data[0],
-                                        port->data[1], 0xf7);
-                                break;
-                        }
-                        port->state = STATE_UNKNOWN;
-                        break;
-                }
-        } else if (b >= 0x80) {
-                port->data[0] = b;
-                if (b >= 0xc0 && b <= 0xdf)
-                        port->state = STATE_1PARAM;
-                else
-                        port->state = STATE_2PARAM_1;
-        } else { /* b < 0x80 */
-                switch (port->state) {
-                case STATE_1PARAM:
-                        if (port->data[0] < 0xf0) {
-                                p0 |= port->data[0] >> 4;
-                        } else {
-                                p0 |= 0x02;
-                                port->state = STATE_UNKNOWN;
-                        }
-                        gmidi_transmit_packet(req, p0, port->data[0], b, 0);
-                        break;
-                case STATE_2PARAM_1:
-                        port->data[1] = b;
-                        port->state = STATE_2PARAM_2;
-                        break;
-                case STATE_2PARAM_2:
-                        if (port->data[0] < 0xf0) {
-                                p0 |= port->data[0] >> 4;
-                                port->state = STATE_2PARAM_1;
-                        } else {
-                                p0 |= 0x03;
-                                port->state = STATE_UNKNOWN;
-                        }
-                        gmidi_transmit_packet(req,
-                                p0, port->data[0], port->data[1], b);
-                        break;
-                case STATE_SYSEX_0:
-                        port->data[0] = b;
-                        port->state = STATE_SYSEX_1;
-                        break;
-                case STATE_SYSEX_1:
-                        port->data[1] = b;
-                        port->state = STATE_SYSEX_2;
-                        break;
-                case STATE_SYSEX_2:
-                        gmidi_transmit_packet(req,
-                                p0 | 0x04, port->data[0], port->data[1], b);
-                        port->state = STATE_SYSEX_0;
-                        break;
-                }
-        }
-}
-
-static void gmidi_transmit(struct gmidi_device *dev, struct usb_request *req)
-{
-        struct usb_ep *ep = dev->in_ep;
-        struct gmidi_in_port *port = &dev->in_port;
-
-        if (!ep) {
-                return;
-        }
-        if (!req) {
-                req = alloc_ep_req(ep, buflen);
-        }
-        if (!req) {
-                ERROR(dev, "gmidi_transmit: alloc_ep_request failed\n");
-                return;
-        }
-        req->length = 0;
-        req->complete = gmidi_complete;
-
-        if (port->active) {
-                while (req->length + 3 < buflen) {
-                        uint8_t b;
-                        if (snd_rawmidi_transmit(dev->in_substream, &b, 1)
-                                != 1)
-                        {
-                                port->active = 0;
-                                break;
-                        }
-                        gmidi_transmit_byte(req, port, b);
-                }
-        }
-        if (req->length > 0) {
-                usb_ep_queue(ep, req, GFP_ATOMIC);
-        } else {
-                free_ep_req(ep, req);
-        }
-}
-
-static void gmidi_in_tasklet(unsigned long data)
-{
-        struct gmidi_device *dev = (struct gmidi_device *)data;
-
-        gmidi_transmit(dev, NULL);
-}
-
-static int gmidi_in_open(struct snd_rawmidi_substream *substream)
-{
-        struct gmidi_device *dev = substream->rmidi->private_data;
-
-        VDBG(dev, "gmidi_in_open\n");
-        dev->in_substream = substream;
-        dev->in_port.state = STATE_UNKNOWN;
-        return 0;
-}
-
-static int gmidi_in_close(struct snd_rawmidi_substream *substream)
-{
-        struct gmidi_device *dev = substream->rmidi->private_data;
-
-        VDBG(dev, "gmidi_in_close\n");
-        return 0;
-}
-
-static void gmidi_in_trigger(struct snd_rawmidi_substream *substream, int up)
-{
-        struct gmidi_device *dev = substream->rmidi->private_data;
-
-        VDBG(dev, "gmidi_in_trigger %d\n", up);
-        dev->in_port.active = up;
-        if (up) {
-                tasklet_hi_schedule(&dev->tasklet);
-        }
-}
-
-static int gmidi_out_open(struct snd_rawmidi_substream *substream)
-{
-        struct gmidi_device *dev = substream->rmidi->private_data;
-
-        VDBG(dev, "gmidi_out_open\n");
-        dev->out_substream = substream;
-        return 0;
-}
-
-static int gmidi_out_close(struct snd_rawmidi_substream *substream)
-{
-        struct gmidi_device *dev = substream->rmidi->private_data;
-
-        VDBG(dev, "gmidi_out_close\n");
-        return 0;
-}
-
-static void gmidi_out_trigger(struct snd_rawmidi_substream *substream, int up)
-{
-        struct gmidi_device *dev = substream->rmidi->private_data;
-
-        VDBG(dev, "gmidi_out_trigger %d\n", up);
-        if (up) {
-                set_bit(substream->number, &dev->out_triggered);
-        } else {
-                clear_bit(substream->number, &dev->out_triggered);
-        }
-}
-
-static struct snd_rawmidi_ops gmidi_in_ops = {
-        .open = gmidi_in_open,
-        .close = gmidi_in_close,
-        .trigger = gmidi_in_trigger,
+static struct usb_configuration midi_config = {
+        .label          = "MIDI Gadget",
+        .bConfigurationValue = 1,
+        /* .iConfiguration = DYNAMIC */
+        .bmAttributes   = USB_CONFIG_ATT_ONE,
+        .bMaxPower      = CONFIG_USB_GADGET_VBUS_DRAW / 2,
 };
 
-static struct snd_rawmidi_ops gmidi_out_ops = {
-        .open = gmidi_out_open,
-        .close = gmidi_out_close,
-        .trigger = gmidi_out_trigger
-};
-
-/* register as a sound "card" */
-static int gmidi_register_card(struct gmidi_device *dev)
+static int __init midi_bind_config(struct usb_configuration *c)
 {
-        struct snd_card *card;
-        struct snd_rawmidi *rmidi;
-        int err;
-        int out_ports = 1;
-        int in_ports = 1;
-        static struct snd_device_ops ops = {
-                .dev_free = gmidi_snd_free,
-        };
-
-        err = snd_card_create(index, id, THIS_MODULE, 0, &card);
-        if (err < 0) {
-                ERROR(dev, "snd_card_create failed\n");
-                goto fail;
-        }
-        dev->card = card;
-
-        err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, dev, &ops);
-        if (err < 0) {
-                ERROR(dev, "snd_device_new failed: error %d\n", err);
-                goto fail;
-        }
-
-        strcpy(card->driver, longname);
-        strcpy(card->longname, longname);
-        strcpy(card->shortname, shortname);
-
-        /* Set up rawmidi */
-        dev->in_port.dev = dev;
-        dev->in_port.active = 0;
-        snd_component_add(card, "MIDI");
-        err = snd_rawmidi_new(card, "USB MIDI Gadget", 0,
-                              out_ports, in_ports, &rmidi);
-        if (err < 0) {
-                ERROR(dev, "snd_rawmidi_new failed: error %d\n", err);
-                goto fail;
-        }
-        dev->rmidi = rmidi;
-        strcpy(rmidi->name, card->shortname);
-        rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
-                            SNDRV_RAWMIDI_INFO_INPUT |
-                            SNDRV_RAWMIDI_INFO_DUPLEX;
-        rmidi->private_data = dev;
-
-        /* Yes, rawmidi OUTPUT = USB IN, and rawmidi INPUT = USB OUT.
-           It's an upside-down world being a gadget. */
-        snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &gmidi_in_ops);
-        snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &gmidi_out_ops);
-
-        snd_card_set_dev(card, &dev->gadget->dev);
-
-        /* register it - we're ready to go */
-        err = snd_card_register(card);
-        if (err < 0) {
-                ERROR(dev, "snd_card_register failed\n");
-                goto fail;
-        }
-
-        VDBG(dev, "gmidi_register_card finished ok\n");
-        return 0;
-
-fail:
-        if (dev->card) {
-                snd_card_free(dev->card);
-                dev->card = NULL;
-        }
-        return err;
+        return f_midi_bind_config(c, index, id,
+                                  in_ports, out_ports,
+                                  buflen, qlen);
 }
 
-/*
- * Creates an output endpoint, and initializes output ports.
- */
-static int __init gmidi_bind(struct usb_gadget *gadget)
+static int __init midi_bind(struct usb_composite_dev *cdev)
 {
-        struct gmidi_device *dev;
-        struct usb_ep *in_ep, *out_ep;
-        int gcnum, err = 0;
+        struct usb_gadget *gadget = cdev->gadget;
+        int gcnum, status;
 
-        /* support optional vendor/distro customization */
-        if (idVendor) {
-                if (!idProduct) {
-                        pr_err("idVendor needs idProduct!\n");
-                        return -ENODEV;
-                }
-                device_desc.idVendor = cpu_to_le16(idVendor);
-                device_desc.idProduct = cpu_to_le16(idProduct);
-                if (bcdDevice) {
-                        device_desc.bcdDevice = cpu_to_le16(bcdDevice);
-                }
-        }
-        if (iManufacturer) {
-                strlcpy(manufacturer, iManufacturer, sizeof(manufacturer));
-        } else {
-                snprintf(manufacturer, sizeof(manufacturer), "%s %s with %s",
-                        init_utsname()->sysname, init_utsname()->release,
-                        gadget->name);
-        }
-        if (iProduct) {
-                strlcpy(product_desc, iProduct, sizeof(product_desc));
-        }
-        if (iSerialNumber) {
-                device_desc.iSerialNumber = STRING_SERIAL,
-                strlcpy(serial_number, iSerialNumber, sizeof(serial_number));
-        }
+        status = usb_string_id(cdev);
+        if (status < 0)
+                return status;
+        strings_dev[STRING_MANUFACTURER_IDX].id = status;
+        device_desc.iManufacturer = status;
 
-        /* Bulk-only drivers like this one SHOULD be able to
-         * autoconfigure on any sane usb controller driver,
-         * but there may also be important quirks to address.
-         */
-        usb_ep_autoconfig_reset(gadget);
-        in_ep = usb_ep_autoconfig(gadget, &bulk_in_desc);
-        if (!in_ep) {
-autoconf_fail:
-                pr_err("%s: can't autoconfigure on %s\n",
-                        shortname, gadget->name);
-                return -ENODEV;
-        }
-        EP_IN_NAME = in_ep->name;
-        in_ep->driver_data = in_ep;     /* claim */
+        status = usb_string_id(cdev);
+        if (status < 0)
+                return status;
+        strings_dev[STRING_PRODUCT_IDX].id = status;
+        device_desc.iProduct = status;
 
-        out_ep = usb_ep_autoconfig(gadget, &bulk_out_desc);
-        if (!out_ep) {
-                goto autoconf_fail;
-        }
-        EP_OUT_NAME = out_ep->name;
-        out_ep->driver_data = out_ep;   /* claim */
+        /* config description */
+        status = usb_string_id(cdev);
+        if (status < 0)
+                return status;
+        strings_dev[STRING_DESCRIPTION_IDX].id = status;
+
+        midi_config.iConfiguration = status;
 
         gcnum = usb_gadget_controller_number(gadget);
-        if (gcnum >= 0) {
-                device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum);
-        } else {
+        if (gcnum < 0) {
                 /* gmidi is so simple (no altsettings) that
                  * it SHOULD NOT have problems with bulk-capable hardware.
                  * so warn about unrecognized controllers, don't panic.
                  */
                 pr_warning("%s: controller '%s' not recognized\n",
-                        shortname, gadget->name);
+                           __func__, gadget->name);
                 device_desc.bcdDevice = cpu_to_le16(0x9999);
+        } else {
+                device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum);
         }
 
+        status = usb_add_config(cdev, &midi_config, midi_bind_config);
+        if (status < 0)
+                return status;
 
-        /* ok, we made sense of the hardware ... */
-        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-        if (!dev) {
-                return -ENOMEM;
-        }
-        spin_lock_init(&dev->lock);
-        dev->gadget = gadget;
-        dev->in_ep = in_ep;
-        dev->out_ep = out_ep;
-        set_gadget_data(gadget, dev);
-        tasklet_init(&dev->tasklet, gmidi_in_tasklet, (unsigned long)dev);
-
-        /* preallocate control response and buffer */
-        dev->req = alloc_ep_req(gadget->ep0, USB_BUFSIZ);
-        if (!dev->req) {
-                err = -ENOMEM;
-                goto fail;
-        }
-
-        dev->req->complete = gmidi_setup_complete;
-
-        gadget->ep0->driver_data = dev;
-
-        INFO(dev, "%s, version: " DRIVER_VERSION "\n", longname);
-        INFO(dev, "using %s, OUT %s IN %s\n", gadget->name,
-                EP_OUT_NAME, EP_IN_NAME);
-
-        /* register as an ALSA sound card */
-        err = gmidi_register_card(dev);
-        if (err < 0) {
-                goto fail;
-        }
-
-        VDBG(dev, "gmidi_bind finished ok\n");
+        pr_info("%s\n", longname);
         return 0;
-
-fail:
-        gmidi_unbind(gadget);
-        return err;
-}
-
-
-static void gmidi_suspend(struct usb_gadget *gadget)
-{
-        struct gmidi_device *dev = get_gadget_data(gadget);
-
-        if (gadget->speed == USB_SPEED_UNKNOWN) {
-                return;
-        }
-
-        DBG(dev, "suspend\n");
-}
-
-static void gmidi_resume(struct usb_gadget *gadget)
-{
-        struct gmidi_device *dev = get_gadget_data(gadget);
-
-        DBG(dev, "resume\n");
 }
 
-
-static struct usb_gadget_driver gmidi_driver = {
-        .speed          = USB_SPEED_FULL,
-        .function       = (char *)longname,
-        .unbind         = gmidi_unbind,
-
-        .setup          = gmidi_setup,
-        .disconnect     = gmidi_disconnect,
-
-        .suspend        = gmidi_suspend,
-        .resume         = gmidi_resume,
-
-        .driver         = {
-                .name           = (char *)shortname,
-                .owner          = THIS_MODULE,
-        },
+static struct usb_composite_driver midi_driver = {
+        .name           = (char *) longname,
+        .dev            = &device_desc,
+        .strings        = dev_strings,
+        .max_speed      = USB_SPEED_HIGH,
+        .unbind         = __exit_p(midi_unbind),
 };
 
-static int __init gmidi_init(void)
+static int __init midi_init(void)
 {
-        return usb_gadget_probe_driver(&gmidi_driver, gmidi_bind);
+        return usb_composite_probe(&midi_driver, midi_bind);
 }
-module_init(gmidi_init);
+module_init(midi_init);
 
-static void __exit gmidi_cleanup(void)
+static void __exit midi_cleanup(void)
 {
-        usb_gadget_unregister_driver(&gmidi_driver);
+        usb_composite_unregister(&midi_driver);
 }
-module_exit(gmidi_cleanup);
+module_exit(midi_cleanup);
 
diff --git a/drivers/usb/gadget/hid.c b/drivers/usb/gadget/hid.c
index 9fb575034a0e..f888c3ede860 100644
--- a/drivers/usb/gadget/hid.c
+++ b/drivers/usb/gadget/hid.c
@@ -9,15 +9,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 
diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c
index 692fd9b2248b..2d978c0e7ced 100644
--- a/drivers/usb/gadget/imx_udc.c
+++ b/drivers/usb/gadget/imx_udc.c
@@ -689,7 +689,7 @@ static int imx_ep_enable(struct usb_ep *usb_ep,
                 return -EINVAL;
         }
 
-        if (imx_ep->fifosize < le16_to_cpu(desc->wMaxPacketSize)) {
+        if (imx_ep->fifosize < usb_endpoint_maxp(desc)) {
                 D_ERR(imx_usb->dev,
                         "<%s> bad %s maxpacket\n", __func__, usb_ep->name);
                 return -ERANGE;
@@ -1478,7 +1478,7 @@ static int __init imx_udc_probe(struct platform_device *pdev)
 
         for (i = 0; i < IMX_USB_NB_EP + 1; i++) {
                 ret = request_irq(imx_usb->usbd_int[i], intr_handler(i),
-                                     IRQF_DISABLED, driver_name, imx_usb);
+                                     0, driver_name, imx_usb);
                 if (ret) {
                         dev_err(&pdev->dev, "can't get irq %i, err %d\n",
                                 imx_usb->usbd_int[i], ret);
diff --git a/drivers/usb/gadget/imx_udc.h b/drivers/usb/gadget/imx_udc.h
index 7136c242b4ec..d118fb777840 100644
--- a/drivers/usb/gadget/imx_udc.h
+++ b/drivers/usb/gadget/imx_udc.h
@@ -8,11 +8,6 @@
  *      it under the terms of the GNU General Public License as published by
  *      the Free Software Foundation; either version 2 of the License, or
  *      (at your option) any later version.
- *
- *      This program is distributed in the hope that it will be useful,
- *      but WITHOUT ANY WARRANTY; without even the implied warranty of
- *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *      GNU General Public License for more details.
  */
 
 #ifndef __LINUX_USB_GADGET_IMX_H
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index 1b240990448f..a392ec0d2d51 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -8,15 +8,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 
diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c
index ff4d40d77c30..c9fa3bf5b377 100644
--- a/drivers/usb/gadget/langwell_udc.c
+++ b/drivers/usb/gadget/langwell_udc.c
@@ -5,16 +5,6 @@
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
  * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
  */
 
 
@@ -60,9 +50,6 @@ static const char driver_name[] = "langwell_udc";
 static const char driver_desc[] = DRIVER_DESC;
 
 
-/* controller device global variable */
-static struct langwell_udc      *the_controller;
-
 /* for endpoint 0 operations */
 static const struct usb_endpoint_descriptor
 langwell_ep0_desc = {
@@ -283,7 +270,7 @@ static int langwell_ep_enable(struct usb_ep *_ep,
         if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
                 return -ESHUTDOWN;
 
-        max = le16_to_cpu(desc->wMaxPacketSize);
+        max = usb_endpoint_maxp(desc);
 
         /*
          * disable HW zero length termination select
@@ -1321,9 +1308,12 @@ static int langwell_pullup(struct usb_gadget *_gadget, int is_on)
         return 0;
 }
 
-static int langwell_start(struct usb_gadget_driver *driver,
-                int (*bind)(struct usb_gadget *));
-static int langwell_stop(struct usb_gadget_driver *driver);
+static int langwell_start(struct usb_gadget *g,
+                struct usb_gadget_driver *driver);
+
+static int langwell_stop(struct usb_gadget *g,
+                struct usb_gadget_driver *driver);
+
 /* device controller usb_gadget_ops structure */
 static const struct usb_gadget_ops langwell_ops = {
 
@@ -1345,8 +1335,8 @@ static const struct usb_gadget_ops langwell_ops = {
         /* D+ pullup, software-controlled connect/disconnect to USB host */
         .pullup         = langwell_pullup,
 
-        .start          = langwell_start,
-        .stop           = langwell_stop,
+        .udc_start      = langwell_start,
+        .udc_stop       = langwell_stop,
 };
 
 
@@ -1561,7 +1551,7 @@ static void stop_activity(struct langwell_udc *dev,
 static ssize_t show_function(struct device *_dev,
                 struct device_attribute *attr, char *buf)
 {
-        struct langwell_udc     *dev = the_controller;
+        struct langwell_udc     *dev = dev_get_drvdata(_dev);
 
         if (!dev->driver || !dev->driver->function
                         || strlen(dev->driver->function) > PAGE_SIZE)
@@ -1572,11 +1562,25 @@ static ssize_t show_function(struct device *_dev,
 static DEVICE_ATTR(function, S_IRUGO, show_function, NULL);
 
 
+static inline enum usb_device_speed lpm_device_speed(u32 reg)
+{
+        switch (LPM_PSPD(reg)) {
+        case LPM_SPEED_HIGH:
+                return USB_SPEED_HIGH;
+        case LPM_SPEED_FULL:
+                return USB_SPEED_FULL;
+        case LPM_SPEED_LOW:
+                return USB_SPEED_LOW;
+        default:
+                return USB_SPEED_UNKNOWN;
+        }
+}
+
 /* device "langwell_udc" sysfs attribute file */
 static ssize_t show_langwell_udc(struct device *_dev,
                 struct device_attribute *attr, char *buf)
 {
-        struct langwell_udc     *dev = the_controller;
+        struct langwell_udc     *dev = dev_get_drvdata(_dev);
         struct langwell_request *req;
         struct langwell_ep      *ep = NULL;
         char                    *next;
@@ -1700,20 +1704,7 @@ static ssize_t show_langwell_udc(struct device *_dev,
                 "BmAttributes: %d\n\n",
                 LPM_PTS(tmp_reg),
                 (tmp_reg & LPM_STS) ? 1 : 0,
-                ({
-                        char    *s;
-                        switch (LPM_PSPD(tmp_reg)) {
-                        case LPM_SPEED_FULL:
-                                s = "Full Speed"; break;
-                        case LPM_SPEED_LOW:
-                                s = "Low Speed"; break;
-                        case LPM_SPEED_HIGH:
-                                s = "High Speed"; break;
-                        default:
-                                s = "Unknown Speed"; break;
-                        }
-                        s;
-                }),
+                usb_speed_string(lpm_device_speed(tmp_reg)),
                 (tmp_reg & LPM_PFSC) ? "Force Full Speed" : "Not Force",
                 (tmp_reg & LPM_PHCD) ? "Disabled" : "Enabled",
                 LPM_BA(tmp_reg));
@@ -1821,7 +1812,7 @@ static DEVICE_ATTR(langwell_udc, S_IRUGO, show_langwell_udc, NULL);
 static ssize_t store_remote_wakeup(struct device *_dev,
                 struct device_attribute *attr, const char *buf, size_t count)
 {
-        struct langwell_udc     *dev = the_controller;
+        struct langwell_udc     *dev = dev_get_drvdata(_dev);
         unsigned long           flags;
         ssize_t                 rc = count;
 
@@ -1857,21 +1848,15 @@ static DEVICE_ATTR(remote_wakeup, S_IWUSR, NULL, store_remote_wakeup);
  * the driver might get unbound.
  */
 
-static int langwell_start(struct usb_gadget_driver *driver,
-                int (*bind)(struct usb_gadget *))
+static int langwell_start(struct usb_gadget *g,
+                struct usb_gadget_driver *driver)
 {
-        struct langwell_udc     *dev = the_controller;
+        struct langwell_udc     *dev = gadget_to_langwell(g);
         unsigned long           flags;
         int                     retval;
 
-        if (!dev)
-                return -ENODEV;
-
         dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__);
 
-        if (dev->driver)
-                return -EBUSY;
-
         spin_lock_irqsave(&dev->lock, flags);
 
         /* hook up the driver ... */
@@ -1881,18 +1866,9 @@ static int langwell_start(struct usb_gadget_driver *driver,
 
         spin_unlock_irqrestore(&dev->lock, flags);
 
-        retval = bind(&dev->gadget);
-        if (retval) {
-                dev_dbg(&dev->pdev->dev, "bind to driver %s --> %d\n",
-                                driver->driver.name, retval);
-                dev->driver = NULL;
-                dev->gadget.dev.driver = NULL;
-                return retval;
-        }
-
         retval = device_create_file(&dev->pdev->dev, &dev_attr_function);
         if (retval)
-                goto err_unbind;
+                goto err;
 
         dev->usb_state = USB_STATE_ATTACHED;
         dev->ep0_state = WAIT_FOR_SETUP;
@@ -1909,31 +1885,27 @@ static int langwell_start(struct usb_gadget_driver *driver,
         dev_info(&dev->pdev->dev, "register driver: %s\n",
                         driver->driver.name);
         dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__);
+
         return 0;
 
-err_unbind:
-        driver->unbind(&dev->gadget);
+err:
         dev->gadget.dev.driver = NULL;
         dev->driver = NULL;
 
         dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__);
+
         return retval;
 }
 
 /* unregister gadget driver */
-static int langwell_stop(struct usb_gadget_driver *driver)
+static int langwell_stop(struct usb_gadget *g,
+                struct usb_gadget_driver *driver)
 {
-        struct langwell_udc     *dev = the_controller;
+        struct langwell_udc     *dev = gadget_to_langwell(g);
         unsigned long           flags;
 
-        if (!dev)
-                return -ENODEV;
-
         dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__);
 
-        if (unlikely(!driver || !driver->unbind))
-                return -EINVAL;
-
         /* exit PHY low power suspend */
         if (dev->pdev->device != 0x0829)
                 langwell_phy_low_power(dev, 0);
@@ -1956,8 +1928,6 @@ static int langwell_stop(struct usb_gadget_driver *driver)
         stop_activity(dev, driver);
         spin_unlock_irqrestore(&dev->lock, flags);
 
-        /* unbind gadget driver */
-        driver->unbind(&dev->gadget);
         dev->gadget.dev.driver = NULL;
         dev->driver = NULL;
 
@@ -1966,6 +1936,7 @@ static int langwell_stop(struct usb_gadget_driver *driver)
         dev_info(&dev->pdev->dev, "unregistered driver '%s'\n",
                         driver->driver.name);
         dev_dbg(&dev->pdev->dev, "<--- %s()\n", __func__);
+
         return 0;
 }
 
@@ -2657,12 +2628,10 @@ done:
         dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__);
 }
 
-
 /* port change detect interrupt handler */
 static void handle_port_change(struct langwell_udc *dev)
 {
         u32     portsc1, devlc;
-        u32     speed;
 
         dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__);
 
@@ -2677,24 +2646,9 @@ static void handle_port_change(struct langwell_udc *dev)
         /* bus reset is finished */
         if (!(portsc1 & PORTS_PR)) {
                 /* get the speed */
-                speed = LPM_PSPD(devlc);
-                switch (speed) {
-                case LPM_SPEED_HIGH:
-                        dev->gadget.speed = USB_SPEED_HIGH;
-                        break;
-                case LPM_SPEED_FULL:
-                        dev->gadget.speed = USB_SPEED_FULL;
-                        break;
-                case LPM_SPEED_LOW:
-                        dev->gadget.speed = USB_SPEED_LOW;
-                        break;
-                default:
-                        dev->gadget.speed = USB_SPEED_UNKNOWN;
-                        break;
-                }
-                dev_vdbg(&dev->pdev->dev,
-                                "speed = %d, dev->gadget.speed = %d\n",
-                                speed, dev->gadget.speed);
+                dev->gadget.speed = lpm_device_speed(devlc);
+                dev_vdbg(&dev->pdev->dev, "dev->gadget.speed = %d\n",
+                        dev->gadget.speed);
         }
 
         /* LPM L0 to L1 */
@@ -2999,7 +2953,7 @@ static irqreturn_t langwell_irq(int irq, void *_dev)
 /* release device structure */
 static void gadget_release(struct device *_dev)
 {
-        struct langwell_udc     *dev = the_controller;
+        struct langwell_udc     *dev = dev_get_drvdata(_dev);
 
         dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__);
 
@@ -3057,7 +3011,7 @@ static void sram_deinit(struct langwell_udc *dev)
 /* tear down the binding between this driver and the pci device */
 static void langwell_udc_remove(struct pci_dev *pdev)
 {
-        struct langwell_udc     *dev = the_controller;
+        struct langwell_udc     *dev = pci_get_drvdata(pdev);
 
         DECLARE_COMPLETION(done);
 
@@ -3124,8 +3078,6 @@ static void langwell_udc_remove(struct pci_dev *pdev)
 
         /* free dev, wait for the release() finished */
         wait_for_completion(&done);
-
-        the_controller = NULL;
 }
 
 
@@ -3144,11 +3096,6 @@ static int langwell_udc_probe(struct pci_dev *pdev,
         size_t                  size;
         int                     retval;
 
-        if (the_controller) {
-                dev_warn(&pdev->dev, "ignoring\n");
-                return -EBUSY;
-        }
-
         /* alloc, and start init */
         dev = kzalloc(sizeof *dev, GFP_KERNEL);
         if (dev == NULL) {
@@ -3368,8 +3315,6 @@ static int langwell_udc_probe(struct pci_dev *pdev,
                         "After langwell_udc_probe(), print all registers:\n");
         print_all_registers(dev);
 
-        the_controller = dev;
-
         retval = device_register(&dev->gadget.dev);
         if (retval)
                 goto error;
@@ -3404,7 +3349,7 @@ error:
 /* device controller suspend */
 static int langwell_udc_suspend(struct pci_dev *pdev, pm_message_t state)
 {
-        struct langwell_udc     *dev = the_controller;
+        struct langwell_udc     *dev = pci_get_drvdata(pdev);
 
         dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__);
 
@@ -3452,7 +3397,7 @@ static int langwell_udc_suspend(struct pci_dev *pdev, pm_message_t state)
 /* device controller resume */
 static int langwell_udc_resume(struct pci_dev *pdev)
 {
-        struct langwell_udc     *dev = the_controller;
+        struct langwell_udc     *dev = pci_get_drvdata(pdev);
         size_t                  size;
 
         dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__);
@@ -3534,7 +3479,7 @@ static int langwell_udc_resume(struct pci_dev *pdev)
 /* pci driver shutdown */
 static void langwell_udc_shutdown(struct pci_dev *pdev)
 {
-        struct langwell_udc     *dev = the_controller;
+        struct langwell_udc     *dev = pci_get_drvdata(pdev);
         u32                     usbmode;
 
         dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__);
diff --git a/drivers/usb/gadget/langwell_udc.h b/drivers/usb/gadget/langwell_udc.h
index f1d9c1bb04f3..ef79e242b7b0 100644
--- a/drivers/usb/gadget/langwell_udc.h
+++ b/drivers/usb/gadget/langwell_udc.h
@@ -5,16 +5,6 @@
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
  * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
  */
 
 #include <linux/usb/langwell_udc.h>
@@ -231,3 +221,5 @@ struct langwell_udc {
         u16                     dev_status;
 };
 
+#define gadget_to_langwell(g)   container_of((g), struct langwell_udc, gadget)
+
diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
index 491f825ed5c9..91d0af2a24a8 100644
--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -8,16 +8,6 @@
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
  */
 
 #include <linux/module.h>
@@ -370,7 +360,7 @@ static void m66592_ep_setting(struct m66592 *m66592, struct m66592_ep *ep,
 
         ep->pipectr = get_pipectr_addr(pipenum);
         ep->pipenum = pipenum;
-        ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+        ep->ep.maxpacket = usb_endpoint_maxp(desc);
         m66592->pipenum2ep[pipenum] = ep;
         m66592->epaddr2ep[desc->bEndpointAddress&USB_ENDPOINT_NUMBER_MASK] = ep;
         INIT_LIST_HEAD(&ep->queue);
@@ -447,7 +437,7 @@ static int alloc_pipe_config(struct m66592_ep *ep,
         ep->type = info.type;
 
         info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
-        info.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+        info.maxpacket = usb_endpoint_maxp(desc);
         info.interval = desc->bInterval;
         if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
                 info.dir_in = 1;
@@ -1674,7 +1664,7 @@ static int __init m66592_probe(struct platform_device *pdev)
         m66592->timer.data = (unsigned long)m66592;
         m66592->reg = reg;
 
-        ret = request_irq(ires->start, m66592_irq, IRQF_DISABLED | IRQF_SHARED,
+        ret = request_irq(ires->start, m66592_irq, IRQF_SHARED,
                         udc_name, m66592);
         if (ret < 0) {
                 pr_err("request_irq error (%d)\n", ret);
diff --git a/drivers/usb/gadget/m66592-udc.h b/drivers/usb/gadget/m66592-udc.h
index 7b93d579af37..9d9f7e39f037 100644
--- a/drivers/usb/gadget/m66592-udc.h
+++ b/drivers/usb/gadget/m66592-udc.h
@@ -8,16 +8,6 @@
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
  */
 
 #ifndef __M66592_UDC_H__
diff --git a/drivers/usb/gadget/mass_storage.c b/drivers/usb/gadget/mass_storage.c
index d3eb27427c58..e24f72f82a47 100644
--- a/drivers/usb/gadget/mass_storage.c
+++ b/drivers/usb/gadget/mass_storage.c
@@ -10,15 +10,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 
@@ -169,7 +160,7 @@ static struct usb_composite_driver msg_driver = {
         .name           = "g_mass_storage",
         .dev            = &msg_device_desc,
         .iProduct       = DRIVER_DESC,
-        .max_speed      = USB_SPEED_HIGH,
+        .max_speed      = USB_SPEED_SUPER,
         .needs_serial   = 1,
 };
 
diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c
index 8c7b74717d85..7e7f515b8b19 100644
--- a/drivers/usb/gadget/multi.c
+++ b/drivers/usb/gadget/multi.c
@@ -10,15 +10,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 
diff --git a/drivers/usb/gadget/mv_udc.h b/drivers/usb/gadget/mv_udc.h
index 65f1f7c3bd4e..daa75c12f336 100644
--- a/drivers/usb/gadget/mv_udc.h
+++ b/drivers/usb/gadget/mv_udc.h
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2011 Marvell International Ltd. All rights reserved.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
 
 #ifndef __MV_UDC_H
 #define __MV_UDC_H
@@ -194,14 +202,25 @@ struct mv_udc {
         unsigned int            ep0_dir;
 
         unsigned int            dev_addr;
+        unsigned int            test_mode;
 
         int                     errors;
         unsigned                softconnect:1,
                                 vbus_active:1,
                                 remote_wakeup:1,
                                 softconnected:1,
-                                force_fs:1;
-        struct clk              *clk;
+                                force_fs:1,
+                                clock_gating:1,
+                                active:1;
+
+        struct work_struct      vbus_work;
+        struct workqueue_struct *qwork;
+
+        struct mv_usb_platform_data     *pdata;
+
+        /* some SOC has mutiple clock sources for USB*/
+        unsigned int    clknum;
+        struct clk      *clk[0];
 };
 
 /* endpoint data structure */
@@ -225,6 +244,7 @@ struct mv_req {
         struct mv_dtd           *dtd, *head, *tail;
         struct mv_ep            *ep;
         struct list_head        queue;
+        unsigned int            test_mode;
         unsigned                dtd_count;
         unsigned                mapped:1;
 };
@@ -289,6 +309,4 @@ struct mv_dtd {
         struct mv_dtd *next_dtd_virt;
 };
 
-extern int mv_udc_phy_init(unsigned int base);
-
 #endif
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c
index 0b3b8d0462db..892412103dd8 100644
--- a/drivers/usb/gadget/mv_udc_core.c
+++ b/drivers/usb/gadget/mv_udc_core.c
@@ -1,3 +1,14 @@
+/*
+ * Copyright (C) 2011 Marvell International Ltd. All rights reserved.
+ * Author: Chao Xie <chao.xie@marvell.com>
+ *         Neil Zhang <zhangwm@marvell.com>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/dma-mapping.h>
@@ -22,6 +33,7 @@
 #include <linux/irq.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
+#include <linux/platform_data/mv_usb.h>
 #include <asm/system.h>
 #include <asm/unaligned.h>
 
@@ -45,6 +57,8 @@
 #define LOOPS_USEC              (1 << LOOPS_USEC_SHIFT)
 #define LOOPS(timeout)          ((timeout) >> LOOPS_USEC_SHIFT)
 
+static DECLARE_COMPLETION(release_done);
+
 static const char driver_name[] = "mv_udc";
 static const char driver_desc[] = DRIVER_DESC;
 
@@ -53,6 +67,7 @@ static struct mv_udc	*the_controller;
 int mv_usb_otgsc;
 
 static void nuke(struct mv_ep *ep, int status);
+static void stop_activity(struct mv_udc *udc, struct usb_gadget_driver *driver);
 
 /* for endpoint 0 operations */
 static const struct usb_endpoint_descriptor mv_ep0_desc = {
@@ -82,14 +97,16 @@ static void ep0_reset(struct mv_udc *udc)
                         (EP0_MAX_PKT_SIZE << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
                         | EP_QUEUE_HEAD_IOS;
 
+                ep->dqh->next_dtd_ptr = EP_QUEUE_HEAD_NEXT_TERMINATE;
+
                 epctrlx = readl(&udc->op_regs->epctrlx[0]);
                 if (i) {        /* TX */
-                        epctrlx |= EPCTRL_TX_ENABLE | EPCTRL_TX_DATA_TOGGLE_RST
+                        epctrlx |= EPCTRL_TX_ENABLE
                                 | (USB_ENDPOINT_XFER_CONTROL
                                         << EPCTRL_TX_EP_TYPE_SHIFT);
 
                 } else {        /* RX */
-                        epctrlx |= EPCTRL_RX_ENABLE | EPCTRL_RX_DATA_TOGGLE_RST
+                        epctrlx |= EPCTRL_RX_ENABLE
                                 | (USB_ENDPOINT_XFER_CONTROL
                                         << EPCTRL_RX_EP_TYPE_SHIFT);
                 }
@@ -122,6 +139,7 @@ static int process_ep_req(struct mv_udc *udc, int index,
         int i, direction;
         int retval = 0;
         u32 errors;
+        u32 bit_pos;
 
         curr_dqh = &udc->ep_dqh[index];
         direction = index % 2;
@@ -139,10 +157,20 @@ static int process_ep_req(struct mv_udc *udc, int index,
 
                 errors = curr_dtd->size_ioc_sts & DTD_ERROR_MASK;
                 if (!errors) {
-                        remaining_length +=
+                        remaining_length =
                                 (curr_dtd->size_ioc_sts & DTD_PACKET_SIZE)
                                         >> DTD_LENGTH_BIT_POS;
                         actual -= remaining_length;
+
+                        if (remaining_length) {
+                                if (direction) {
+                                        dev_dbg(&udc->dev->dev,
+                                                "TX dTD remains data\n");
+                                        retval = -EPROTO;
+                                        break;
+                                } else
+                                        break;
+                        }
                 } else {
                         dev_info(&udc->dev->dev,
                                 "complete_tr error: ep=%d %s: error = 0x%x\n",
@@ -164,6 +192,20 @@ static int process_ep_req(struct mv_udc *udc, int index,
         if (retval)
                 return retval;
 
+        if (direction == EP_DIR_OUT)
+                bit_pos = 1 << curr_req->ep->ep_num;
+        else
+                bit_pos = 1 << (16 + curr_req->ep->ep_num);
+
+        while ((curr_dqh->curr_dtd_ptr == curr_dtd->td_dma)) {
+                if (curr_dtd->dtd_next == EP_QUEUE_HEAD_NEXT_TERMINATE) {
+                        while (readl(&udc->op_regs->epstatus) & bit_pos)
+                                udelay(1);
+                        break;
+                }
+                udelay(1);
+        }
+
         curr_req->req.actual = actual;
 
         return 0;
@@ -481,6 +523,7 @@ static int mv_ep_enable(struct usb_ep *_ep,
         u16 max = 0;
         u32 bit_pos, epctrlx, direction;
         unsigned char zlt = 0, ios = 0, mult = 0;
+        unsigned long flags;
 
         ep = container_of(_ep, struct mv_ep, ep);
         udc = ep->udc;
@@ -493,7 +536,7 @@ static int mv_ep_enable(struct usb_ep *_ep,
                 return -ESHUTDOWN;
 
         direction = ep_dir(ep);
-        max = le16_to_cpu(desc->wMaxPacketSize);
+        max = usb_endpoint_maxp(desc);
 
         /*
          * disable HW zero length termination select
@@ -501,9 +544,6 @@ static int mv_ep_enable(struct usb_ep *_ep,
          */
         zlt = 1;
 
-        /* Get the endpoint queue head address */
-        dqh = (struct mv_dqh *)ep->dqh;
-
         bit_pos = 1 << ((direction == EP_DIR_OUT ? 0 : 16) + ep->ep_num);
 
         /* Check if the Endpoint is Primed */
@@ -532,7 +572,7 @@ static int mv_ep_enable(struct usb_ep *_ep,
         case USB_ENDPOINT_XFER_ISOC:
                 /* Calculate transactions needed for high bandwidth iso */
                 mult = (unsigned char)(1 + ((max >> 11) & 0x03));
-                max = max & 0x8ff;      /* bit 0~10 */
+                max = max & 0x7ff;      /* bit 0~10 */
                 /* 3 transactions at most */
                 if (mult > 3)
                         goto en_done;
@@ -540,6 +580,10 @@ static int mv_ep_enable(struct usb_ep *_ep,
         default:
                 goto en_done;
         }
+
+        spin_lock_irqsave(&udc->lock, flags);
+        /* Get the endpoint queue head address */
+        dqh = ep->dqh;
         dqh->max_packet_length = (max << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
                 | (mult << EP_QUEUE_HEAD_MULT_POS)
                 | (zlt ? EP_QUEUE_HEAD_ZLT_SEL : 0)
@@ -572,18 +616,20 @@ static int mv_ep_enable(struct usb_ep *_ep,
          */
         epctrlx = readl(&udc->op_regs->epctrlx[ep->ep_num]);
         if ((epctrlx & EPCTRL_RX_ENABLE) == 0) {
-                epctrlx |= ((desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+                epctrlx |= (USB_ENDPOINT_XFER_BULK
                                 << EPCTRL_RX_EP_TYPE_SHIFT);
                 writel(epctrlx, &udc->op_regs->epctrlx[ep->ep_num]);
         }
 
         epctrlx = readl(&udc->op_regs->epctrlx[ep->ep_num]);
         if ((epctrlx & EPCTRL_TX_ENABLE) == 0) {
-                epctrlx |= ((desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+                epctrlx |= (USB_ENDPOINT_XFER_BULK
                                 << EPCTRL_TX_EP_TYPE_SHIFT);
                 writel(epctrlx, &udc->op_regs->epctrlx[ep->ep_num]);
         }
 
+        spin_unlock_irqrestore(&udc->lock, flags);
+
         return 0;
 en_done:
         return -EINVAL;
@@ -595,6 +641,7 @@ static int  mv_ep_disable(struct usb_ep *_ep)
         struct mv_ep *ep;
         struct mv_dqh *dqh;
         u32 bit_pos, epctrlx, direction;
+        unsigned long flags;
 
         ep = container_of(_ep, struct mv_ep, ep);
         if ((_ep == NULL) || !ep->desc)
@@ -605,6 +652,8 @@ static int  mv_ep_disable(struct usb_ep *_ep)
         /* Get the endpoint queue head address */
         dqh = ep->dqh;
 
+        spin_lock_irqsave(&udc->lock, flags);
+
         direction = ep_dir(ep);
         bit_pos = 1 << ((direction == EP_DIR_OUT ? 0 : 16) + ep->ep_num);
 
@@ -623,6 +672,9 @@ static int  mv_ep_disable(struct usb_ep *_ep)
 
         ep->desc = NULL;
         ep->stopped = 1;
+
+        spin_unlock_irqrestore(&udc->lock, flags);
+
         return 0;
 }
 
@@ -655,37 +707,28 @@ static void mv_ep_fifo_flush(struct usb_ep *_ep)
 {
         struct mv_udc *udc;
         u32 bit_pos, direction;
-        struct mv_ep *ep = container_of(_ep, struct mv_ep, ep);
+        struct mv_ep *ep;
         unsigned int loops;
 
+        if (!_ep)
+                return;
+
+        ep = container_of(_ep, struct mv_ep, ep);
+        if (!ep->desc)
+                return;
+
         udc = ep->udc;
         direction = ep_dir(ep);
-        bit_pos = 1 << ((direction == EP_DIR_OUT ? 0 : 16) + ep->ep_num);
-        /*
-         * Flushing will halt the pipe
-         * Write 1 to the Flush register
-         */
-        writel(bit_pos, &udc->op_regs->epflush);
 
-        /* Wait until flushing completed */
-        loops = LOOPS(FLUSH_TIMEOUT);
-        while (readl(&udc->op_regs->epflush) & bit_pos) {
-                /*
-                 * ENDPTFLUSH bit should be cleared to indicate this
-                 * operation is complete
-                 */
-                if (loops == 0) {
-                        dev_err(&udc->dev->dev,
-                                "TIMEOUT for ENDPTFLUSH=0x%x, bit_pos=0x%x\n",
-                                (unsigned)readl(&udc->op_regs->epflush),
-                                (unsigned)bit_pos);
-                        return;
-                }
-                loops--;
-                udelay(LOOPS_USEC);
-        }
+        if (ep->ep_num == 0)
+                bit_pos = (1 << 16) | 1;
+        else if (direction == EP_DIR_OUT)
+                bit_pos = 1 << ep->ep_num;
+        else
+                bit_pos = 1 << (16 + ep->ep_num);
+
         loops = LOOPS(EPSTATUS_TIMEOUT);
-        while (readl(&udc->op_regs->epstatus) & bit_pos) {
+        do {
                 unsigned int inter_loops;
 
                 if (loops == 0) {
@@ -700,7 +743,7 @@ static void mv_ep_fifo_flush(struct usb_ep *_ep)
 
                 /* Wait until flushing completed */
                 inter_loops = LOOPS(FLUSH_TIMEOUT);
-                while (readl(&udc->op_regs->epflush) & bit_pos) {
+                while (readl(&udc->op_regs->epflush)) {
                         /*
                          * ENDPTFLUSH bit should be cleared to indicate this
                          * operation is complete
@@ -717,7 +760,7 @@ static void mv_ep_fifo_flush(struct usb_ep *_ep)
                         udelay(LOOPS_USEC);
                 }
                 loops--;
-        }
+        } while (readl(&udc->op_regs->epstatus) & bit_pos);
 }
 
 /* queues (submits) an I/O request to an endpoint */
@@ -987,6 +1030,22 @@ static struct usb_ep_ops mv_ep_ops = {
         .fifo_flush     = mv_ep_fifo_flush,     /* flush fifo */
 };
 
+static void udc_clock_enable(struct mv_udc *udc)
+{
+        unsigned int i;
+
+        for (i = 0; i < udc->clknum; i++)
+                clk_enable(udc->clk[i]);
+}
+
+static void udc_clock_disable(struct mv_udc *udc)
+{
+        unsigned int i;
+
+        for (i = 0; i < udc->clknum; i++)
+                clk_disable(udc->clk[i]);
+}
+
 static void udc_stop(struct mv_udc *udc)
 {
         u32 tmp;
@@ -1075,6 +1134,40 @@ static int udc_reset(struct mv_udc *udc)
         return 0;
 }
 
+static int mv_udc_enable(struct mv_udc *udc)
+{
+        int retval;
+
+        if (udc->clock_gating == 0 || udc->active)
+                return 0;
+
+        dev_dbg(&udc->dev->dev, "enable udc\n");
+        udc_clock_enable(udc);
+        if (udc->pdata->phy_init) {
+                retval = udc->pdata->phy_init(udc->phy_regs);
+                if (retval) {
+                        dev_err(&udc->dev->dev,
+                                "init phy error %d\n", retval);
+                        udc_clock_disable(udc);
+                        return retval;
+                }
+        }
+        udc->active = 1;
+
+        return 0;
+}
+
+static void mv_udc_disable(struct mv_udc *udc)
+{
+        if (udc->clock_gating && udc->active) {
+                dev_dbg(&udc->dev->dev, "disable udc\n");
+                if (udc->pdata->phy_deinit)
+                        udc->pdata->phy_deinit(udc->phy_regs);
+                udc_clock_disable(udc);
+                udc->active = 0;
+        }
+}
+
 static int mv_udc_get_frame(struct usb_gadget *gadget)
 {
         struct mv_udc *udc;
@@ -1110,22 +1203,68 @@ static int mv_udc_wakeup(struct usb_gadget *gadget)
         return 0;
 }
 
+static int mv_udc_vbus_session(struct usb_gadget *gadget, int is_active)
+{
+        struct mv_udc *udc;
+        unsigned long flags;
+        int retval = 0;
+
+        udc = container_of(gadget, struct mv_udc, gadget);
+        spin_lock_irqsave(&udc->lock, flags);
+
+        dev_dbg(&udc->dev->dev, "%s: softconnect %d, vbus_active %d\n",
+                __func__, udc->softconnect, udc->vbus_active);
+
+        udc->vbus_active = (is_active != 0);
+        if (udc->driver && udc->softconnect && udc->vbus_active) {
+                retval = mv_udc_enable(udc);
+                if (retval == 0) {
+                        /* Clock is disabled, need re-init registers */
+                        udc_reset(udc);
+                        ep0_reset(udc);
+                        udc_start(udc);
+                }
+        } else if (udc->driver && udc->softconnect) {
+                /* stop all the transfer in queue*/
+                stop_activity(udc, udc->driver);
+                udc_stop(udc);
+                mv_udc_disable(udc);
+        }
+
+        spin_unlock_irqrestore(&udc->lock, flags);
+        return retval;
+}
+
 static int mv_udc_pullup(struct usb_gadget *gadget, int is_on)
 {
         struct mv_udc *udc;
         unsigned long flags;
+        int retval = 0;
 
         udc = container_of(gadget, struct mv_udc, gadget);
         spin_lock_irqsave(&udc->lock, flags);
 
+        dev_dbg(&udc->dev->dev, "%s: softconnect %d, vbus_active %d\n",
+                        __func__, udc->softconnect, udc->vbus_active);
+
         udc->softconnect = (is_on != 0);
-        if (udc->driver && udc->softconnect)
-                udc_start(udc);
-        else
+        if (udc->driver && udc->softconnect && udc->vbus_active) {
+                retval = mv_udc_enable(udc);
+                if (retval == 0) {
+                        /* Clock is disabled, need re-init registers */
+                        udc_reset(udc);
+                        ep0_reset(udc);
+                        udc_start(udc);
+                }
+        } else if (udc->driver && udc->vbus_active) {
+                /* stop all the transfer in queue*/
+                stop_activity(udc, udc->driver);
                 udc_stop(udc);
+                mv_udc_disable(udc);
+        }
 
         spin_unlock_irqrestore(&udc->lock, flags);
-        return 0;
+        return retval;
 }
 
 static int mv_udc_start(struct usb_gadget_driver *driver,
@@ -1140,17 +1279,15 @@ static const struct usb_gadget_ops mv_ops = {
         /* tries to wake up the host connected to this gadget */
         .wakeup         = mv_udc_wakeup,
 
+        /* notify controller that VBUS is powered or not */
+        .vbus_session   = mv_udc_vbus_session,
+
         /* D+ pullup, software-controlled connect/disconnect to USB host */
         .pullup         = mv_udc_pullup,
         .start          = mv_udc_start,
         .stop           = mv_udc_stop,
 };
 
-static void mv_udc_testmode(struct mv_udc *udc, u16 index, bool enter)
-{
-        dev_info(&udc->dev->dev, "Test Mode is not support yet\n");
-}
-
 static int eps_init(struct mv_udc *udc)
 {
         struct mv_ep    *ep;
@@ -1257,7 +1394,7 @@ static int mv_udc_start(struct usb_gadget_driver *driver,
 
         udc->usb_state = USB_STATE_ATTACHED;
         udc->ep0_state = WAIT_FOR_SETUP;
-        udc->ep0_dir = USB_DIR_OUT;
+        udc->ep0_dir = EP_DIR_OUT;
 
         spin_unlock_irqrestore(&udc->lock, flags);
 
@@ -1269,9 +1406,13 @@ static int mv_udc_start(struct usb_gadget_driver *driver,
                 udc->gadget.dev.driver = NULL;
                 return retval;
         }
-        udc_reset(udc);
-        ep0_reset(udc);
-        udc_start(udc);
+
+        /* pullup is always on */
+        mv_udc_pullup(&udc->gadget, 1);
+
+        /* When boot with cable attached, there will be no vbus irq occurred */
+        if (udc->qwork)
+                queue_work(udc->qwork, &udc->vbus_work);
 
         return 0;
 }
@@ -1284,13 +1425,16 @@ static int mv_udc_stop(struct usb_gadget_driver *driver)
         if (!udc)
                 return -ENODEV;
 
-        udc_stop(udc);
-
         spin_lock_irqsave(&udc->lock, flags);
 
+        mv_udc_enable(udc);
+        udc_stop(udc);
+
         /* stop all usb activities */
         udc->gadget.speed = USB_SPEED_UNKNOWN;
         stop_activity(udc, driver);
+        mv_udc_disable(udc);
+
         spin_unlock_irqrestore(&udc->lock, flags);
 
         /* unbind gadget driver */
@@ -1301,6 +1445,31 @@ static int mv_udc_stop(struct usb_gadget_driver *driver)
         return 0;
 }
 
+static void mv_set_ptc(struct mv_udc *udc, u32 mode)
+{
+        u32 portsc;
+
+        portsc = readl(&udc->op_regs->portsc[0]);
+        portsc |= mode << 16;
+        writel(portsc, &udc->op_regs->portsc[0]);
+}
+
+static void prime_status_complete(struct usb_ep *ep, struct usb_request *_req)
+{
+        struct mv_udc *udc = the_controller;
+        struct mv_req *req = container_of(_req, struct mv_req, req);
+        unsigned long flags;
+
+        dev_info(&udc->dev->dev, "switch to test mode %d\n", req->test_mode);
+
+        spin_lock_irqsave(&udc->lock, flags);
+        if (req->test_mode) {
+                mv_set_ptc(udc, req->test_mode);
+                req->test_mode = 0;
+        }
+        spin_unlock_irqrestore(&udc->lock, flags);
+}
+
 static int
 udc_prime_status(struct mv_udc *udc, u8 direction, u16 status, bool empty)
 {
@@ -1310,6 +1479,7 @@ udc_prime_status(struct mv_udc *udc, u8 direction, u16 status, bool empty)
 
         ep = &udc->eps[0];
         udc->ep0_dir = direction;
+        udc->ep0_state = WAIT_FOR_OUT_STATUS;
 
         req = udc->status_req;
 
@@ -1323,9 +1493,21 @@ udc_prime_status(struct mv_udc *udc, u8 direction, u16 status, bool empty)
         req->ep = ep;
         req->req.status = -EINPROGRESS;
         req->req.actual = 0;
-        req->req.complete = NULL;
+        if (udc->test_mode) {
+                req->req.complete = prime_status_complete;
+                req->test_mode = udc->test_mode;
+                udc->test_mode = 0;
+        } else
+                req->req.complete = NULL;
         req->dtd_count = 0;
 
+        if (req->req.dma == DMA_ADDR_INVALID) {
+                req->req.dma = dma_map_single(ep->udc->gadget.dev.parent,
+                                req->req.buf, req->req.length,
+                                ep_dir(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+                req->mapped = 1;
+        }
+
         /* prime the data phase */
         if (!req_to_dtd(req))
                 retval = queue_dtd(ep, req);
@@ -1346,6 +1528,17 @@ out:
         return retval;
 }
 
+static void mv_udc_testmode(struct mv_udc *udc, u16 index)
+{
+        if (index <= TEST_FORCE_EN) {
+                udc->test_mode = index;
+                if (udc_prime_status(udc, EP_DIR_IN, 0, true))
+                        ep0_stall(udc);
+        } else
+                dev_err(&udc->dev->dev,
+                        "This test mode(%d) is not supported\n", index);
+}
+
 static void ch9setaddress(struct mv_udc *udc, struct usb_ctrlrequest *setup)
 {
         udc->dev_addr = (u8)setup->wValue;
@@ -1360,7 +1553,7 @@ static void ch9setaddress(struct mv_udc *udc, struct usb_ctrlrequest *setup)
 static void ch9getstatus(struct mv_udc *udc, u8 ep_num,
         struct usb_ctrlrequest *setup)
 {
-        u16 status;
+        u16 status = 0;
         int retval;
 
         if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK))
@@ -1388,6 +1581,8 @@ static void ch9getstatus(struct mv_udc *udc, u8 ep_num,
         retval = udc_prime_status(udc, EP_DIR_IN, status, false);
         if (retval)
                 ep0_stall(udc);
+        else
+                udc->ep0_state = DATA_STATE_XMIT;
 }
 
 static void ch9clearfeature(struct mv_udc *udc, struct usb_ctrlrequest *setup)
@@ -1402,9 +1597,6 @@ static void ch9clearfeature(struct mv_udc *udc, struct usb_ctrlrequest *setup)
                 case USB_DEVICE_REMOTE_WAKEUP:
                         udc->remote_wakeup = 0;
                         break;
-                case USB_DEVICE_TEST_MODE:
-                        mv_udc_testmode(udc, 0, false);
-                        break;
                 default:
                         goto out;
                 }
@@ -1433,8 +1625,6 @@ static void ch9clearfeature(struct mv_udc *udc, struct usb_ctrlrequest *setup)
 
         if (udc_prime_status(udc, EP_DIR_IN, 0, true))
                 ep0_stall(udc);
-        else
-                udc->ep0_state = DATA_STATE_XMIT;
 out:
         return;
 }
@@ -1452,16 +1642,16 @@ static void ch9setfeature(struct mv_udc *udc, struct usb_ctrlrequest *setup)
                         break;
                 case USB_DEVICE_TEST_MODE:
                         if (setup->wIndex & 0xFF
-                                && udc->gadget.speed != USB_SPEED_HIGH)
-                                goto out;
-                        if (udc->usb_state == USB_STATE_CONFIGURED
-                                || udc->usb_state == USB_STATE_ADDRESS
-                                || udc->usb_state == USB_STATE_DEFAULT)
-                                mv_udc_testmode(udc,
-                                        setup->wIndex & 0xFF00, true);
-                        else
-                                goto out;
-                        break;
+                                ||  udc->gadget.speed != USB_SPEED_HIGH)
+                                ep0_stall(udc);
+
+                        if (udc->usb_state != USB_STATE_CONFIGURED
+                                && udc->usb_state != USB_STATE_ADDRESS
+                                && udc->usb_state != USB_STATE_DEFAULT)
+                                ep0_stall(udc);
+
+                        mv_udc_testmode(udc, (setup->wIndex >> 8));
+                        goto out;
                 default:
                         goto out;
                 }
@@ -1599,8 +1789,7 @@ static void get_setup_data(struct mv_udc *udc, u8 ep_num, u8 *buffer_ptr)
         dqh = &udc->ep_dqh[ep_num * 2 + EP_DIR_OUT];
 
         /* Clear bit in ENDPTSETUPSTAT */
-        temp = readl(&udc->op_regs->epsetupstat);
-        writel(temp | (1 << ep_num), &udc->op_regs->epsetupstat);
+        writel((1 << ep_num), &udc->op_regs->epsetupstat);
 
         /* while a hazard exists when setup package arrives */
         do {
@@ -1871,23 +2060,57 @@ static irqreturn_t mv_udc_irq(int irq, void *dev)
         return IRQ_HANDLED;
 }
 
+static irqreturn_t mv_udc_vbus_irq(int irq, void *dev)
+{
+        struct mv_udc *udc = (struct mv_udc *)dev;
+
+        /* polling VBUS and init phy may cause too much time*/
+        if (udc->qwork)
+                queue_work(udc->qwork, &udc->vbus_work);
+
+        return IRQ_HANDLED;
+}
+
+static void mv_udc_vbus_work(struct work_struct *work)
+{
+        struct mv_udc *udc;
+        unsigned int vbus;
+
+        udc = container_of(work, struct mv_udc, vbus_work);
+        if (!udc->pdata->vbus)
+                return;
+
+        vbus = udc->pdata->vbus->poll();
+        dev_info(&udc->dev->dev, "vbus is %d\n", vbus);
+
+        if (vbus == VBUS_HIGH)
+                mv_udc_vbus_session(&udc->gadget, 1);
+        else if (vbus == VBUS_LOW)
+                mv_udc_vbus_session(&udc->gadget, 0);
+}
+
 /* release device structure */
 static void gadget_release(struct device *_dev)
 {
         struct mv_udc *udc = the_controller;
 
         complete(udc->done);
-        kfree(udc);
 }
 
-static int mv_udc_remove(struct platform_device *dev)
+static int __devexit mv_udc_remove(struct platform_device *dev)
 {
         struct mv_udc *udc = the_controller;
-        DECLARE_COMPLETION(done);
+        int clk_i;
 
         usb_del_gadget_udc(&udc->gadget);
 
-        udc->done = &done;
+        if (udc->qwork) {
+                flush_workqueue(udc->qwork);
+                destroy_workqueue(udc->qwork);
+        }
+
+        if (udc->pdata && udc->pdata->vbus && udc->clock_gating)
+                free_irq(udc->pdata->vbus->irq, &dev->dev);
 
         /* free memory allocated in probe */
         if (udc->dtd_pool)
@@ -1902,6 +2125,8 @@ static int mv_udc_remove(struct platform_device *dev)
         if (udc->irq)
                 free_irq(udc->irq, &dev->dev);
 
+        mv_udc_disable(udc);
+
         if (udc->cap_regs)
                 iounmap(udc->cap_regs);
         udc->cap_regs = NULL;
@@ -1915,45 +2140,62 @@ static int mv_udc_remove(struct platform_device *dev)
                 kfree(udc->status_req);
         }
 
+        for (clk_i = 0; clk_i <= udc->clknum; clk_i++)
+                clk_put(udc->clk[clk_i]);
+
         device_unregister(&udc->gadget.dev);
 
         /* free dev, wait for the release() finished */
-        wait_for_completion(&done);
+        wait_for_completion(udc->done);
+        kfree(udc);
 
         the_controller = NULL;
 
         return 0;
 }
 
-int mv_udc_probe(struct platform_device *dev)
+static int __devinit mv_udc_probe(struct platform_device *dev)
 {
+        struct mv_usb_platform_data *pdata = dev->dev.platform_data;
         struct mv_udc *udc;
         int retval = 0;
+        int clk_i = 0;
         struct resource *r;
         size_t size;
 
-        udc = kzalloc(sizeof *udc, GFP_KERNEL);
+        if (pdata == NULL) {
+                dev_err(&dev->dev, "missing platform_data\n");
+                return -ENODEV;
+        }
+
+        size = sizeof(*udc) + sizeof(struct clk *) * pdata->clknum;
+        udc = kzalloc(size, GFP_KERNEL);
         if (udc == NULL) {
                 dev_err(&dev->dev, "failed to allocate memory for udc\n");
-                retval = -ENOMEM;
-                goto error;
+                return -ENOMEM;
         }
 
+        the_controller = udc;
+        udc->done = &release_done;
+        udc->pdata = dev->dev.platform_data;
         spin_lock_init(&udc->lock);
 
         udc->dev = dev;
 
-        udc->clk = clk_get(&dev->dev, "U2OCLK");
-        if (IS_ERR(udc->clk)) {
-                retval = PTR_ERR(udc->clk);
-                goto error;
+        udc->clknum = pdata->clknum;
+        for (clk_i = 0; clk_i < udc->clknum; clk_i++) {
+                udc->clk[clk_i] = clk_get(&dev->dev, pdata->clkname[clk_i]);
+                if (IS_ERR(udc->clk[clk_i])) {
+                        retval = PTR_ERR(udc->clk[clk_i]);
+                        goto err_put_clk;
+                }
         }
 
-        r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "u2o");
+        r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "capregs");
         if (r == NULL) {
                 dev_err(&dev->dev, "no I/O memory resource defined\n");
                 retval = -ENODEV;
-                goto error;
+                goto err_put_clk;
         }
 
         udc->cap_regs = (struct mv_cap_regs __iomem *)
@@ -1961,29 +2203,31 @@ int mv_udc_probe(struct platform_device *dev)
         if (udc->cap_regs == NULL) {
                 dev_err(&dev->dev, "failed to map I/O memory\n");
                 retval = -EBUSY;
-                goto error;
+                goto err_put_clk;
         }
 
-        r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "u2ophy");
+        r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "phyregs");
         if (r == NULL) {
                 dev_err(&dev->dev, "no phy I/O memory resource defined\n");
                 retval = -ENODEV;
-                goto error;
+                goto err_iounmap_capreg;
         }
 
         udc->phy_regs = (unsigned int)ioremap(r->start, resource_size(r));
         if (udc->phy_regs == 0) {
                 dev_err(&dev->dev, "failed to map phy I/O memory\n");
                 retval = -EBUSY;
-                goto error;
+                goto err_iounmap_capreg;
         }
 
         /* we will acces controller register, so enable the clk */
-        clk_enable(udc->clk);
-        retval = mv_udc_phy_init(udc->phy_regs);
-        if (retval) {
-                dev_err(&dev->dev, "phy initialization error %d\n", retval);
-                goto error;
+        udc_clock_enable(udc);
+        if (pdata->phy_init) {
+                retval = pdata->phy_init(udc->phy_regs);
+                if (retval) {
+                        dev_err(&dev->dev, "phy init error %d\n", retval);
+                        goto err_iounmap_phyreg;
+                }
         }
 
         udc->op_regs = (struct mv_op_regs __iomem *)((u32)udc->cap_regs
@@ -1991,6 +2235,13 @@ int mv_udc_probe(struct platform_device *dev)
                         & CAPLENGTH_MASK));
         udc->max_eps = readl(&udc->cap_regs->dccparams) & DCCPARAMS_DEN_MASK;
 
+        /*
+         * some platform will use usb to download image, it may not disconnect
+         * usb gadget before loading kernel. So first stop udc here.
+         */
+        udc_stop(udc);
+        writel(0xFFFFFFFF, &udc->op_regs->usbsts);
+
         size = udc->max_eps * sizeof(struct mv_dqh) *2;
         size = (size + DQH_ALIGNMENT - 1) & ~(DQH_ALIGNMENT - 1);
         udc->ep_dqh = dma_alloc_coherent(&dev->dev, size,
@@ -1999,7 +2250,7 @@ int mv_udc_probe(struct platform_device *dev)
         if (udc->ep_dqh == NULL) {
                 dev_err(&dev->dev, "allocate dQH memory failed\n");
                 retval = -ENOMEM;
-                goto error;
+                goto err_disable_clock;
         }
         udc->ep_dqh_size = size;
 
@@ -2012,7 +2263,7 @@ int mv_udc_probe(struct platform_device *dev)
 
         if (!udc->dtd_pool) {
                 retval = -ENOMEM;
-                goto error;
+                goto err_free_dma;
         }
 
         size = udc->max_eps * sizeof(struct mv_ep) *2;
@@ -2020,7 +2271,7 @@ int mv_udc_probe(struct platform_device *dev)
         if (udc->eps == NULL) {
                 dev_err(&dev->dev, "allocate ep memory failed\n");
                 retval = -ENOMEM;
-                goto error;
+                goto err_destroy_dma;
         }
 
         /* initialize ep0 status request structure */
@@ -2028,13 +2279,13 @@ int mv_udc_probe(struct platform_device *dev)
         if (!udc->status_req) {
                 dev_err(&dev->dev, "allocate status_req memory failed\n");
                 retval = -ENOMEM;
-                goto error;
+                goto err_free_eps;
         }
         INIT_LIST_HEAD(&udc->status_req->queue);
 
         /* allocate a small amount of memory to get valid address */
         udc->status_req->req.buf = kzalloc(8, GFP_KERNEL);
-        udc->status_req->req.dma = virt_to_phys(udc->status_req->req.buf);
+        udc->status_req->req.dma = DMA_ADDR_INVALID;
 
         udc->resume_state = USB_STATE_NOTATTACHED;
         udc->usb_state = USB_STATE_POWERED;
@@ -2045,15 +2296,15 @@ int mv_udc_probe(struct platform_device *dev)
         if (r == NULL) {
                 dev_err(&dev->dev, "no IRQ resource defined\n");
                 retval = -ENODEV;
-                goto error;
+                goto err_free_status_req;
         }
         udc->irq = r->start;
         if (request_irq(udc->irq, mv_udc_irq,
-                IRQF_DISABLED | IRQF_SHARED, driver_name, udc)) {
+                IRQF_SHARED, driver_name, udc)) {
                 dev_err(&dev->dev, "Request irq %d for UDC failed\n",
                         udc->irq);
                 retval = -ENODEV;
-                goto error;
+                goto err_free_status_req;
         }
 
         /* initialize gadget structure */
@@ -2072,18 +2323,82 @@ int mv_udc_probe(struct platform_device *dev)
 
         retval = device_register(&udc->gadget.dev);
         if (retval)
-                goto error;
+                goto err_free_irq;
 
         eps_init(udc);
 
-        the_controller = udc;
+        /* VBUS detect: we can disable/enable clock on demand.*/
+        if (pdata->vbus) {
+                udc->clock_gating = 1;
+                retval = request_threaded_irq(pdata->vbus->irq, NULL,
+                                mv_udc_vbus_irq, IRQF_ONESHOT, "vbus", udc);
+                if (retval) {
+                        dev_info(&dev->dev,
+                                "Can not request irq for VBUS, "
+                                "disable clock gating\n");
+                        udc->clock_gating = 0;
+                }
+
+                udc->qwork = create_singlethread_workqueue("mv_udc_queue");
+                if (!udc->qwork) {
+                        dev_err(&dev->dev, "cannot create workqueue\n");
+                        retval = -ENOMEM;
+                        goto err_unregister;
+                }
+
+                INIT_WORK(&udc->vbus_work, mv_udc_vbus_work);
+        }
+
+        /*
+         * When clock gating is supported, we can disable clk and phy.
+         * If not, it means that VBUS detection is not supported, we
+         * have to enable vbus active all the time to let controller work.
+         */
+        if (udc->clock_gating) {
+                if (udc->pdata->phy_deinit)
+                        udc->pdata->phy_deinit(udc->phy_regs);
+                udc_clock_disable(udc);
+        } else
+                udc->vbus_active = 1;
 
         retval = usb_add_gadget_udc(&dev->dev, &udc->gadget);
-        if (!retval)
-                return retval;
-error:
-        if (udc)
-                mv_udc_remove(udc->dev);
+        if (retval)
+                goto err_unregister;
+
+        dev_info(&dev->dev, "successful probe UDC device %s clock gating.\n",
+                udc->clock_gating ? "with" : "without");
+
+        return 0;
+
+err_unregister:
+        if (udc->pdata && udc->pdata->vbus && udc->clock_gating)
+                free_irq(pdata->vbus->irq, &dev->dev);
+        device_unregister(&udc->gadget.dev);
+err_free_irq:
+        free_irq(udc->irq, &dev->dev);
+err_free_status_req:
+        kfree(udc->status_req->req.buf);
+        kfree(udc->status_req);
+err_free_eps:
+        kfree(udc->eps);
+err_destroy_dma:
+        dma_pool_destroy(udc->dtd_pool);
+err_free_dma:
+        dma_free_coherent(&dev->dev, udc->ep_dqh_size,
+                        udc->ep_dqh, udc->ep_dqh_dma);
+err_disable_clock:
+        if (udc->pdata->phy_deinit)
+                udc->pdata->phy_deinit(udc->phy_regs);
+        udc_clock_disable(udc);
+err_iounmap_phyreg:
+        iounmap((void *)udc->phy_regs);
+err_iounmap_capreg:
+        iounmap(udc->cap_regs);
+err_put_clk:
+        for (clk_i--; clk_i >= 0; clk_i--)
+                clk_put(udc->clk[clk_i]);
+        the_controller = NULL;
+        kfree(udc);
         return retval;
 }
 
@@ -2102,11 +2417,16 @@ static int mv_udc_resume(struct device *_dev)
         struct mv_udc *udc = the_controller;
         int retval;
 
-        retval = mv_udc_phy_init(udc->phy_regs);
-        if (retval) {
-                dev_err(_dev, "phy initialization error %d\n", retval);
-                return retval;
+        if (udc->pdata->phy_init) {
+                retval = udc->pdata->phy_init(udc->phy_regs);
+                if (retval) {
+                        dev_err(&udc->dev->dev,
+                                "init phy error %d when resume back\n",
+                                retval);
+                        return retval;
+                }
         }
+
         udc_reset(udc);
         ep0_reset(udc);
         udc_start(udc);
@@ -2120,9 +2440,21 @@ static const struct dev_pm_ops mv_udc_pm_ops = {
 };
 #endif
 
+static void mv_udc_shutdown(struct platform_device *dev)
+{
+        struct mv_udc *udc = the_controller;
+        u32 mode;
+
+        /* reset controller mode to IDLE */
+        mode = readl(&udc->op_regs->usbmode);
+        mode &= ~3;
+        writel(mode, &udc->op_regs->usbmode);
+}
+
 static struct platform_driver udc_driver = {
         .probe          = mv_udc_probe,
         .remove         = __exit_p(mv_udc_remove),
+        .shutdown       = mv_udc_shutdown,
         .driver         = {
                 .owner  = THIS_MODULE,
                 .name   = "pxa-u2o",
diff --git a/drivers/usb/gadget/mv_udc_phy.c b/drivers/usb/gadget/mv_udc_phy.c
deleted file mode 100644
index d4dea97e38a5..000000000000
--- a/drivers/usb/gadget/mv_udc_phy.c
+++ /dev/null
@@ -1,214 +0,0 @@
-#include <linux/delay.h>
-#include <linux/timer.h>
-#include <linux/io.h>
-#include <linux/errno.h>
-
-#include <mach/cputype.h>
-
-#ifdef CONFIG_ARCH_MMP
-
-#define UTMI_REVISION           0x0
-#define UTMI_CTRL               0x4
-#define UTMI_PLL                0x8
-#define UTMI_TX                 0xc
-#define UTMI_RX                 0x10
-#define UTMI_IVREF              0x14
-#define UTMI_T0                 0x18
-#define UTMI_T1                 0x1c
-#define UTMI_T2                 0x20
-#define UTMI_T3                 0x24
-#define UTMI_T4                 0x28
-#define UTMI_T5                 0x2c
-#define UTMI_RESERVE            0x30
-#define UTMI_USB_INT            0x34
-#define UTMI_DBG_CTL            0x38
-#define UTMI_OTG_ADDON          0x3c
-
-/* For UTMICTRL Register */
-#define UTMI_CTRL_USB_CLK_EN                    (1 << 31)
-/* pxa168 */
-#define UTMI_CTRL_SUSPEND_SET1                  (1 << 30)
-#define UTMI_CTRL_SUSPEND_SET2                  (1 << 29)
-#define UTMI_CTRL_RXBUF_PDWN                    (1 << 24)
-#define UTMI_CTRL_TXBUF_PDWN                    (1 << 11)
-
-#define UTMI_CTRL_INPKT_DELAY_SHIFT             30
-#define UTMI_CTRL_INPKT_DELAY_SOF_SHIFT         28
-#define UTMI_CTRL_PU_REF_SHIFT                  20
-#define UTMI_CTRL_ARC_PULLDN_SHIFT              12
-#define UTMI_CTRL_PLL_PWR_UP_SHIFT              1
-#define UTMI_CTRL_PWR_UP_SHIFT                  0
-/* For UTMI_PLL Register */
-#define UTMI_PLL_CLK_BLK_EN_SHIFT               24
-#define UTMI_PLL_FBDIV_SHIFT                    4
-#define UTMI_PLL_REFDIV_SHIFT                   0
-#define UTMI_PLL_FBDIV_MASK                     0x00000FF0
-#define UTMI_PLL_REFDIV_MASK                    0x0000000F
-#define UTMI_PLL_ICP_MASK                       0x00007000
-#define UTMI_PLL_KVCO_MASK                      0x00031000
-#define UTMI_PLL_PLLCALI12_SHIFT                29
-#define UTMI_PLL_PLLCALI12_MASK                 (0x3 << 29)
-#define UTMI_PLL_PLLVDD18_SHIFT                 27
-#define UTMI_PLL_PLLVDD18_MASK                  (0x3 << 27)
-#define UTMI_PLL_PLLVDD12_SHIFT                 25
-#define UTMI_PLL_PLLVDD12_MASK                  (0x3 << 25)
-#define UTMI_PLL_KVCO_SHIFT                     15
-#define UTMI_PLL_ICP_SHIFT                      12
-/* For UTMI_TX Register */
-#define UTMI_TX_REG_EXT_FS_RCAL_SHIFT           27
-#define UTMI_TX_REG_EXT_FS_RCAL_MASK            (0xf << 27)
-#define UTMI_TX_REG_EXT_FS_RCAL_EN_MASK         26
-#define UTMI_TX_REG_EXT_FS_RCAL_EN              (0x1 << 26)
-#define UTMI_TX_LOW_VDD_EN_SHIFT                11
-#define UTMI_TX_IMPCAL_VTH_SHIFT                14
-#define UTMI_TX_IMPCAL_VTH_MASK                 (0x7 << 14)
-#define UTMI_TX_CK60_PHSEL_SHIFT                17
-#define UTMI_TX_CK60_PHSEL_MASK                 (0xf << 17)
-#define UTMI_TX_TXVDD12_SHIFT                   22
-#define UTMI_TX_TXVDD12_MASK                    (0x3 << 22)
-#define UTMI_TX_AMP_SHIFT                       0
-#define UTMI_TX_AMP_MASK                        (0x7 << 0)
-/* For UTMI_RX Register */
-#define UTMI_RX_SQ_THRESH_SHIFT                 4
-#define UTMI_RX_SQ_THRESH_MASK                  (0xf << 4)
-#define UTMI_REG_SQ_LENGTH_SHIFT                15
-#define UTMI_REG_SQ_LENGTH_MASK                 (0x3 << 15)
-
-#define REG_RCAL_START                          0x00001000
-#define VCOCAL_START                            0x00200000
-#define KVCO_EXT                                0x00400000
-#define PLL_READY                               0x00800000
-#define CLK_BLK_EN                              0x01000000
-#endif
-
-static unsigned int u2o_read(unsigned int base, unsigned int offset)
-{
-        return readl(base + offset);
-}
-
-static void u2o_set(unsigned int base, unsigned int offset, unsigned int value)
-{
-        unsigned int reg;
-
-        reg = readl(base + offset);
-        reg |= value;
-        writel(reg, base + offset);
-        readl(base + offset);
-}
-
-static void u2o_clear(unsigned int base, unsigned int offset,
-        unsigned int value)
-{
-        unsigned int reg;
-
-        reg = readl(base + offset);
-        reg &= ~value;
-        writel(reg, base + offset);
-        readl(base + offset);
-}
-
-static void u2o_write(unsigned int base, unsigned int offset,
-        unsigned int value)
-{
-        writel(value, base + offset);
-        readl(base + offset);
-}
-
-#ifdef CONFIG_ARCH_MMP
-int mv_udc_phy_init(unsigned int base)
-{
-        unsigned long timeout;
-
-        /* Initialize the USB PHY power */
-        if (cpu_is_pxa910()) {
-                u2o_set(base, UTMI_CTRL, (1 << UTMI_CTRL_INPKT_DELAY_SOF_SHIFT)
-                        | (1 << UTMI_CTRL_PU_REF_SHIFT));
-        }
-
-        u2o_set(base, UTMI_CTRL, 1 << UTMI_CTRL_PLL_PWR_UP_SHIFT);
-        u2o_set(base, UTMI_CTRL, 1 << UTMI_CTRL_PWR_UP_SHIFT);
-
-        /* UTMI_PLL settings */
-        u2o_clear(base, UTMI_PLL, UTMI_PLL_PLLVDD18_MASK
-                | UTMI_PLL_PLLVDD12_MASK | UTMI_PLL_PLLCALI12_MASK
-                | UTMI_PLL_FBDIV_MASK | UTMI_PLL_REFDIV_MASK
-                | UTMI_PLL_ICP_MASK | UTMI_PLL_KVCO_MASK);
-
-        u2o_set(base, UTMI_PLL, (0xee << UTMI_PLL_FBDIV_SHIFT)
-                | (0xb << UTMI_PLL_REFDIV_SHIFT)
-                | (3 << UTMI_PLL_PLLVDD18_SHIFT)
-                | (3 << UTMI_PLL_PLLVDD12_SHIFT)
-                | (3 << UTMI_PLL_PLLCALI12_SHIFT)
-                | (1 << UTMI_PLL_ICP_SHIFT) | (3 << UTMI_PLL_KVCO_SHIFT));
-
-        /* UTMI_TX */
-        u2o_clear(base, UTMI_TX, UTMI_TX_REG_EXT_FS_RCAL_EN_MASK
-                | UTMI_TX_TXVDD12_MASK
-                | UTMI_TX_CK60_PHSEL_MASK | UTMI_TX_IMPCAL_VTH_MASK
-                | UTMI_TX_REG_EXT_FS_RCAL_MASK | UTMI_TX_AMP_MASK);
-        u2o_set(base, UTMI_TX, (3 << UTMI_TX_TXVDD12_SHIFT)
-                | (4 << UTMI_TX_CK60_PHSEL_SHIFT)
-                | (4 << UTMI_TX_IMPCAL_VTH_SHIFT)
-                | (8 << UTMI_TX_REG_EXT_FS_RCAL_SHIFT)
-                | (3 << UTMI_TX_AMP_SHIFT));
-
-        /* UTMI_RX */
-        u2o_clear(base, UTMI_RX, UTMI_RX_SQ_THRESH_MASK
-                | UTMI_REG_SQ_LENGTH_MASK);
-        if (cpu_is_pxa168())
-                u2o_set(base, UTMI_RX, (7 << UTMI_RX_SQ_THRESH_SHIFT)
-                        | (2 << UTMI_REG_SQ_LENGTH_SHIFT));
-        else
-                u2o_set(base, UTMI_RX, (0x7 << UTMI_RX_SQ_THRESH_SHIFT)
-                        | (2 << UTMI_REG_SQ_LENGTH_SHIFT));
-
-        /* UTMI_IVREF */
-        if (cpu_is_pxa168())
-                /*
-                 * fixing Microsoft Altair board interface with NEC hub issue -
-                 * Set UTMI_IVREF from 0x4a3 to 0x4bf
-                 */
-                u2o_write(base, UTMI_IVREF, 0x4bf);
-
-        /* calibrate */
-        timeout = jiffies + 100;
-        while ((u2o_read(base, UTMI_PLL) & PLL_READY) == 0) {
-                if (time_after(jiffies, timeout))
-                        return -ETIME;
-                cpu_relax();
-        }
-
-        /* toggle VCOCAL_START bit of UTMI_PLL */
-        udelay(200);
-        u2o_set(base, UTMI_PLL, VCOCAL_START);
-        udelay(40);
-        u2o_clear(base, UTMI_PLL, VCOCAL_START);
-
-        /* toggle REG_RCAL_START bit of UTMI_TX */
-        udelay(200);
-        u2o_set(base, UTMI_TX, REG_RCAL_START);
-        udelay(40);
-        u2o_clear(base, UTMI_TX, REG_RCAL_START);
-        udelay(200);
-
-        /* make sure phy is ready */
-        timeout = jiffies + 100;
-        while ((u2o_read(base, UTMI_PLL) & PLL_READY) == 0) {
-                if (time_after(jiffies, timeout))
-                        return -ETIME;
-                cpu_relax();
-        }
-
-        if (cpu_is_pxa168()) {
-                u2o_set(base, UTMI_RESERVE, 1 << 5);
-                /* Turn on UTMI PHY OTG extension */
-                u2o_write(base, UTMI_OTG_ADDON, 1);
-        }
-        return 0;
-}
-#else
-int mv_udc_phy_init(unsigned int base)
-{
-        return 0;
-}
-#endif
diff --git a/drivers/usb/gadget/ncm.c b/drivers/usb/gadget/ncm.c
index 62ee5087dcac..89530034dff1 100644
--- a/drivers/usb/gadget/ncm.c
+++ b/drivers/usb/gadget/ncm.c
@@ -14,15 +14,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 /* #define DEBUG */
diff --git a/drivers/usb/gadget/ndis.h b/drivers/usb/gadget/ndis.h
index df886cec5ef4..b0e52fc277b4 100644
--- a/drivers/usb/gadget/ndis.h
+++ b/drivers/usb/gadget/ndis.h
@@ -10,12 +10,6 @@
  *
  * This source code is offered for use in the public domain. You may
  * use, modify or distribute it freely.
- *
- * This code is distributed in the hope that it will be useful but
- * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
- * DISCLAIMED. This includes but is not limited to warranties of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
  */
 
 #ifndef _LINUX_NDIS_H
diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c
index ab98ea926a11..d1b76368472f 100644
--- a/drivers/usb/gadget/net2272.c
+++ b/drivers/usb/gadget/net2272.c
@@ -204,7 +204,7 @@ net2272_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
         if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
                 return -ESHUTDOWN;
 
-        max = le16_to_cpu(desc->wMaxPacketSize) & 0x1fff;
+        max = usb_endpoint_maxp(desc) & 0x1fff;
 
         spin_lock_irqsave(&dev->lock, flags);
         _ep->maxpacket = max & 0x7fff;
@@ -1172,17 +1172,18 @@ net2272_pullup(struct usb_gadget *_gadget, int is_on)
         return 0;
 }
 
-static int net2272_start(struct usb_gadget_driver *driver,
-                int (*bind)(struct usb_gadget *));
-static int net2272_stop(struct usb_gadget_driver *driver);
+static int net2272_start(struct usb_gadget *_gadget,
+                struct usb_gadget_driver *driver);
+static int net2272_stop(struct usb_gadget *_gadget,
+                struct usb_gadget_driver *driver);
 
 static const struct usb_gadget_ops net2272_ops = {
-        .get_frame       = net2272_get_frame,
-        .wakeup          = net2272_wakeup,
+        .get_frame      = net2272_get_frame,
+        .wakeup         = net2272_wakeup,
         .set_selfpowered = net2272_set_selfpowered,
-        .pullup                 = net2272_pullup,
-        .start                  = net2272_start,
-        .stop                   = net2272_stop,
+        .pullup         = net2272_pullup,
+        .udc_start      = net2272_start,
+        .udc_stop       = net2272_stop,
 };
 
 /*---------------------------------------------------------------------------*/
@@ -1356,8 +1357,6 @@ net2272_set_fifo_mode(struct net2272 *dev, int mode)
 
 /*---------------------------------------------------------------------------*/
 
-static struct net2272 *the_controller;
-
 static void
 net2272_usb_reset(struct net2272 *dev)
 {
@@ -1453,20 +1452,17 @@ net2272_ep0_start(struct net2272 *dev)
  * disconnect is reported.  then a host may connect again, or
  * the driver might get unbound.
  */
-static int net2272_start(struct usb_gadget_driver *driver,
-        int (*bind)(struct usb_gadget *))
+static int net2272_start(struct usb_gadget *_gadget,
+                struct usb_gadget_driver *driver)
 {
-        struct net2272 *dev = the_controller;
-        int ret;
+        struct net2272 *dev;
         unsigned i;
 
-        if (!driver || !bind || !driver->unbind || !driver->setup ||
+        if (!driver || !driver->unbind || !driver->setup ||
             driver->speed != USB_SPEED_HIGH)
                 return -EINVAL;
-        if (!dev)
-                return -ENODEV;
-        if (dev->driver)
-                return -EBUSY;
+
+        dev = container_of(_gadget, struct net2272, gadget);
 
         for (i = 0; i < 4; ++i)
                 dev->ep[i].irqs = 0;
@@ -1475,14 +1471,6 @@ static int net2272_start(struct usb_gadget_driver *driver,
         driver->driver.bus = NULL;
         dev->driver = driver;
         dev->gadget.dev.driver = &driver->driver;
-        ret = bind(&dev->gadget);
-        if (ret) {
-                dev_dbg(dev->dev, "bind to driver %s --> %d\n",
-                        driver->driver.name, ret);
-                dev->driver = NULL;
-                dev->gadget.dev.driver = NULL;
-                return ret;
-        }
 
         /* ... then enable host detection and ep0; and we're ready
          * for set_configuration as well as eventual disconnect.
@@ -1510,33 +1498,21 @@ stop_activity(struct net2272 *dev, struct usb_gadget_driver *driver)
         for (i = 0; i < 4; ++i)
                 net2272_dequeue_all(&dev->ep[i]);
 
-        /* report disconnect; the driver is already quiesced */
-        if (driver) {
-                spin_unlock(&dev->lock);
-                driver->disconnect(&dev->gadget);
-                spin_lock(&dev->lock);
-
-        }
         net2272_usb_reinit(dev);
 }
 
-static int net2272_stop(struct usb_gadget_driver *driver)
+static int net2272_stop(struct usb_gadget *_gadget,
+                struct usb_gadget_driver *driver)
 {
-        struct net2272 *dev = the_controller;
+        struct net2272 *dev;
         unsigned long flags;
 
-        if (!dev)
-                return -ENODEV;
-        if (!driver || driver != dev->driver)
-                return -EINVAL;
+        dev = container_of(_gadget, struct net2272, gadget);
 
         spin_lock_irqsave(&dev->lock, flags);
         stop_activity(dev, driver);
         spin_unlock_irqrestore(&dev->lock, flags);
 
-        net2272_pullup(&dev->gadget, 0);
-
-        driver->unbind(&dev->gadget);
         dev->gadget.dev.driver = NULL;
         dev->driver = NULL;
 
@@ -1764,8 +1740,8 @@ net2272_handle_stat0_irqs(struct net2272 *dev, u8 stat)
                                 dev->gadget.speed = USB_SPEED_HIGH;
                         else
                                 dev->gadget.speed = USB_SPEED_FULL;
-                        dev_dbg(dev->dev, "%s speed\n",
-                                (dev->gadget.speed == USB_SPEED_HIGH) ? "high" : "full");
+                        dev_dbg(dev->dev, "%s\n",
+                                usb_speed_string(dev->gadget.speed));
                 }
 
                 ep = &dev->ep[0];
@@ -2238,7 +2214,6 @@ net2272_remove(struct net2272 *dev)
         device_remove_file(dev->dev, &dev_attr_registers);
 
         dev_info(dev->dev, "unbind\n");
-        the_controller = NULL;
 }
 
 static struct net2272 * __devinit
@@ -2246,11 +2221,6 @@ net2272_probe_init(struct device *dev, unsigned int irq)
 {
         struct net2272 *ret;
 
-        if (the_controller) {
-                dev_warn(dev, "ignoring\n");
-                return ERR_PTR(-EBUSY);
-        }
-
         if (!irq) {
                 dev_dbg(dev, "No IRQ!\n");
                 return ERR_PTR(-ENODEV);
@@ -2307,8 +2277,6 @@ net2272_probe_fin(struct net2272 *dev, unsigned int irqflags)
                 dma_mode_string());
         dev_info(dev->dev, "version: %s\n", driver_vers);
 
-        the_controller = dev;
-
         ret = device_register(&dev->gadget.dev);
         if (ret)
                 goto err_irq;
@@ -2684,8 +2652,6 @@ net2272_plat_probe(struct platform_device *pdev)
         dev_info(&pdev->dev, "running in 16-bit, %sbyte swap local bus mode\n",
                 (net2272_read(dev, LOCCTL) & (1 << BYTE_SWAP)) ? "" : "no ");
 
-        the_controller = dev;
-
         return 0;
 
  err_io:
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index a218a4de5dc9..7f1bc9a73cda 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -33,15 +33,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #undef  DEBUG           /* messages on error and most fault paths */
@@ -169,7 +160,7 @@ net2280_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
                 return -EDOM;
 
         /* sanity check ep-e/ep-f since their fifos are small */
-        max = le16_to_cpu (desc->wMaxPacketSize) & 0x1fff;
+        max = usb_endpoint_maxp (desc) & 0x1fff;
         if (ep->num > 4 && max > 64)
                 return -ERANGE;
 
@@ -1410,17 +1401,18 @@ static int net2280_pullup(struct usb_gadget *_gadget, int is_on)
         return 0;
 }
 
-static int net2280_start(struct usb_gadget_driver *driver,
-                int (*bind)(struct usb_gadget *));
-static int net2280_stop(struct usb_gadget_driver *driver);
+static int net2280_start(struct usb_gadget *_gadget,
+                struct usb_gadget_driver *driver);
+static int net2280_stop(struct usb_gadget *_gadget,
+                struct usb_gadget_driver *driver);
 
 static const struct usb_gadget_ops net2280_ops = {
         .get_frame      = net2280_get_frame,
         .wakeup         = net2280_wakeup,
         .set_selfpowered = net2280_set_selfpowered,
         .pullup         = net2280_pullup,
-        .start          = net2280_start,
-        .stop           = net2280_stop,
+        .udc_start      = net2280_start,
+        .udc_stop       = net2280_stop,
 };
 
 /*-------------------------------------------------------------------------*/
@@ -1640,7 +1632,7 @@ show_queues (struct device *_dev, struct device_attribute *attr, char *buf)
                                  default:
                                         val = "iso"; break;
                                  }; val; }),
-                                le16_to_cpu (d->wMaxPacketSize) & 0x1fff,
+                                usb_endpoint_maxp (d) & 0x1fff,
                                 ep->dma ? "dma" : "pio", ep->fifo_size
                                 );
                 } else /* ep0 should only have one transfer queued */
@@ -1753,8 +1745,6 @@ static void set_fifo_mode (struct net2280 *dev, int mode)
  * perhaps to bind specific drivers to specific devices.
  */
 
-static struct net2280   *the_controller;
-
 static void usb_reset (struct net2280 *dev)
 {
         u32     tmp;
@@ -1880,10 +1870,10 @@ static void ep0_start (struct net2280 *dev)
  * disconnect is reported.  then a host may connect again, or
  * the driver might get unbound.
  */
-static int net2280_start(struct usb_gadget_driver *driver,
-                int (*bind)(struct usb_gadget *))
+static int net2280_start(struct usb_gadget *_gadget,
+                struct usb_gadget_driver *driver)
 {
-        struct net2280          *dev = the_controller;
+        struct net2280          *dev;
         int                     retval;
         unsigned                i;
 
@@ -1891,14 +1881,11 @@ static int net2280_start(struct usb_gadget_driver *driver,
          * (dev->usb->xcvrdiag & FORCE_FULL_SPEED_MODE)
          * "must not be used in normal operation"
          */
-        if (!driver
-                        || driver->speed != USB_SPEED_HIGH
-                        || !bind || !driver->setup)
+        if (!driver || driver->speed != USB_SPEED_HIGH
+                        || !driver->setup)
                 return -EINVAL;
-        if (!dev)
-                return -ENODEV;
-        if (dev->driver)
-                return -EBUSY;
+
+        dev = container_of (_gadget, struct net2280, gadget);
 
         for (i = 0; i < 7; i++)
                 dev->ep [i].irqs = 0;
@@ -1908,14 +1895,6 @@ static int net2280_start(struct usb_gadget_driver *driver,
         driver->driver.bus = NULL;
         dev->driver = driver;
         dev->gadget.dev.driver = &driver->driver;
-        retval = bind(&dev->gadget);
-        if (retval) {
-                DEBUG (dev, "bind to driver %s --> %d\n",
-                                driver->driver.name, retval);
-                dev->driver = NULL;
-                dev->gadget.dev.driver = NULL;
-                return retval;
-        }
 
         retval = device_create_file (&dev->pdev->dev, &dev_attr_function);
         if (retval) goto err_unbind;
@@ -1961,33 +1940,21 @@ stop_activity (struct net2280 *dev, struct usb_gadget_driver *driver)
         for (i = 0; i < 7; i++)
                 nuke (&dev->ep [i]);
 
-        /* report disconnect; the driver is already quiesced */
-        if (driver) {
-                spin_unlock (&dev->lock);
-                driver->disconnect (&dev->gadget);
-                spin_lock (&dev->lock);
-        }
-
         usb_reinit (dev);
 }
 
-static int net2280_stop(struct usb_gadget_driver *driver)
+static int net2280_stop(struct usb_gadget *_gadget,
+                struct usb_gadget_driver *driver)
 {
-        struct net2280  *dev = the_controller;
+        struct net2280  *dev;
         unsigned long   flags;
 
-        if (!dev)
-                return -ENODEV;
-        if (!driver || driver != dev->driver || !driver->unbind)
-                return -EINVAL;
+        dev = container_of (_gadget, struct net2280, gadget);
 
         spin_lock_irqsave (&dev->lock, flags);
         stop_activity (dev, driver);
         spin_unlock_irqrestore (&dev->lock, flags);
 
-        net2280_pullup (&dev->gadget, 0);
-
-        driver->unbind (&dev->gadget);
         dev->gadget.dev.driver = NULL;
         dev->driver = NULL;
 
@@ -2266,9 +2233,7 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
                         else
                                 dev->gadget.speed = USB_SPEED_FULL;
                         net2280_led_speed (dev, dev->gadget.speed);
-                        DEBUG (dev, "%s speed\n",
-                                (dev->gadget.speed == USB_SPEED_HIGH)
-                                        ? "high" : "full");
+                        DEBUG(dev, "%s\n", usb_speed_string(dev->gadget.speed));
                 }
 
                 ep = &dev->ep [0];
@@ -2709,8 +2674,6 @@ static void net2280_remove (struct pci_dev *pdev)
         pci_set_drvdata (pdev, NULL);
 
         INFO (dev, "unbind\n");
-
-        the_controller = NULL;
 }
 
 /* wrap this driver around the specified device, but
@@ -2724,14 +2687,6 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id)
         void                    __iomem *base = NULL;
         int                     retval, i;
 
-        /* if you want to support more than one controller in a system,
-         * usb_gadget_driver_{register,unregister}() must change.
-         */
-        if (the_controller) {
-                dev_warn (&pdev->dev, "ignoring\n");
-                return -EBUSY;
-        }
-
         /* alloc, and start init */
         dev = kzalloc (sizeof *dev, GFP_KERNEL);
         if (dev == NULL){
@@ -2858,8 +2813,6 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id)
                         use_dma
                                 ? (use_dma_chaining ? "chaining" : "enabled")
                                 : "disabled");
-        the_controller = dev;
-
         retval = device_register (&dev->gadget.dev);
         if (retval) goto done;
         retval = device_create_file (&pdev->dev, &dev_attr_registers);
diff --git a/drivers/usb/gadget/net2280.h b/drivers/usb/gadget/net2280.h
index c36852263d93..a844be0d683a 100644
--- a/drivers/usb/gadget/net2280.h
+++ b/drivers/usb/gadget/net2280.h
@@ -11,15 +11,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/usb/net2280.h>
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index 740c7daed279..788989a10223 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -10,15 +10,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #undef  DEBUG
@@ -166,15 +157,14 @@ static int omap_ep_enable(struct usb_ep *_ep,
         if (!_ep || !desc || ep->desc
                         || desc->bDescriptorType != USB_DT_ENDPOINT
                         || ep->bEndpointAddress != desc->bEndpointAddress
-                        || ep->maxpacket < le16_to_cpu
-                                                (desc->wMaxPacketSize)) {
+                        || ep->maxpacket < usb_endpoint_maxp(desc)) {
                 DBG("%s, bad ep or descriptor\n", __func__);
                 return -EINVAL;
         }
-        maxp = le16_to_cpu (desc->wMaxPacketSize);
+        maxp = usb_endpoint_maxp(desc);
         if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
                                 && maxp != ep->maxpacket)
-                        || le16_to_cpu(desc->wMaxPacketSize) > ep->maxpacket
+                        || usb_endpoint_maxp(desc) > ep->maxpacket
                         || !desc->wMaxPacketSize) {
                 DBG("%s, bad %s maxpacket\n", __func__, _ep->name);
                 return -ERANGE;
@@ -2968,7 +2958,7 @@ known:
         }
 #ifdef  USE_ISO
         status = request_irq(pdev->resource[3].start, omap_udc_iso_irq,
-                        IRQF_DISABLED, "omap_udc iso", udc);
+                        0, "omap_udc iso", udc);
         if (status != 0) {
                 ERR("can't get irq %d, err %d\n",
                         (int) pdev->resource[3].start, status);
diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c
index f96615ab6b77..550d6dcdf104 100644
--- a/drivers/usb/gadget/pch_udc.c
+++ b/drivers/usb/gadget/pch_udc.c
@@ -4,15 +4,6 @@
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
  */
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 #include <linux/kernel.h>
@@ -947,7 +938,7 @@ static void pch_udc_ep_enable(struct pch_udc_ep *ep,
         else
                 buff_size = UDC_EPOUT_BUFF_SIZE;
         pch_udc_ep_set_bufsz(ep, buff_size, ep->in);
-        pch_udc_ep_set_maxpkt(ep, le16_to_cpu(desc->wMaxPacketSize));
+        pch_udc_ep_set_maxpkt(ep, usb_endpoint_maxp(desc));
         pch_udc_ep_set_nak(ep);
         pch_udc_ep_fifo_flush(ep, ep->in);
         /* Configure the endpoint */
@@ -957,7 +948,7 @@ static void pch_udc_ep_enable(struct pch_udc_ep *ep,
               (cfg->cur_cfg << UDC_CSR_NE_CFG_SHIFT) |
               (cfg->cur_intf << UDC_CSR_NE_INTF_SHIFT) |
               (cfg->cur_alt << UDC_CSR_NE_ALT_SHIFT) |
-              le16_to_cpu(desc->wMaxPacketSize) << UDC_CSR_NE_MAX_PKT_SHIFT;
+              usb_endpoint_maxp(desc) << UDC_CSR_NE_MAX_PKT_SHIFT;
 
         if (ep->in)
                 pch_udc_write_csr(ep->dev, val, UDC_EPIN_IDX(ep->num));
@@ -1466,7 +1457,7 @@ static int pch_udc_pcd_ep_enable(struct usb_ep *usbep,
         ep->desc = desc;
         ep->halted = 0;
         pch_udc_ep_enable(ep, &ep->dev->cfg_data, desc);
-        ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+        ep->ep.maxpacket = usb_endpoint_maxp(desc);
         pch_udc_enable_ep_interrupts(ep->dev, PCH_UDC_EPINT(ep->in, ep->num));
         spin_unlock_irqrestore(&dev->lock, iflags);
         return 0;
diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
index a341dde6f9c3..65a8834f274b 100644
--- a/drivers/usb/gadget/printer.c
+++ b/drivers/usb/gadget/printer.c
@@ -8,15 +8,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/module.h>
@@ -971,23 +962,15 @@ printer_set_config(struct printer_dev *dev, unsigned number)
                 usb_gadget_vbus_draw(dev->gadget,
                                 dev->gadget->is_otg ? 8 : 100);
         } else {
-                char *speed;
                 unsigned power;
 
                 power = 2 * config_desc.bMaxPower;
                 usb_gadget_vbus_draw(dev->gadget, power);
 
-                switch (gadget->speed) {
-                case USB_SPEED_FULL:    speed = "full"; break;
-#ifdef CONFIG_USB_GADGET_DUALSPEED
-                case USB_SPEED_HIGH:    speed = "high"; break;
-#endif
-                default:                speed = "?"; break;
-                }
-
                 dev->config = number;
-                INFO(dev, "%s speed config #%d: %d mA, %s\n",
-                                speed, number, power, driver_desc);
+                INFO(dev, "%s config #%d: %d mA, %s\n",
+                     usb_speed_string(gadget->speed),
+                     number, power, driver_desc);
         }
         return result;
 }
@@ -1611,7 +1594,7 @@ cleanup(void)
         if (status)
                 ERROR(dev, "usb_gadget_unregister_driver %x\n", status);
 
-        unregister_chrdev_region(g_printer_devno, 2);
+        unregister_chrdev_region(g_printer_devno, 1);
         class_destroy(usb_gadget_class);
         mutex_unlock(&usb_printer_gadget.lock_printer_io);
 }
diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c
index e4e59b4de25d..c090a7e3ecf8 100644
--- a/drivers/usb/gadget/pxa25x_udc.c
+++ b/drivers/usb/gadget/pxa25x_udc.c
@@ -11,16 +11,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  */
 
 /* #define VERBOSE_DEBUG */
@@ -232,8 +222,7 @@ static int pxa25x_ep_enable (struct usb_ep *_ep,
         if (!_ep || !desc || ep->desc || _ep->name == ep0name
                         || desc->bDescriptorType != USB_DT_ENDPOINT
                         || ep->bEndpointAddress != desc->bEndpointAddress
-                        || ep->fifo_size < le16_to_cpu
-                                                (desc->wMaxPacketSize)) {
+                        || ep->fifo_size < usb_endpoint_maxp (desc)) {
                 DMSG("%s, bad ep or descriptor\n", __func__);
                 return -EINVAL;
         }
@@ -248,7 +237,7 @@ static int pxa25x_ep_enable (struct usb_ep *_ep,
 
         /* hardware _could_ do smaller, but driver doesn't */
         if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
-                                && le16_to_cpu (desc->wMaxPacketSize)
+                                && usb_endpoint_maxp (desc)
                                                 != BULK_FIFO_SIZE)
                         || !desc->wMaxPacketSize) {
                 DMSG("%s, bad %s maxpacket\n", __func__, _ep->name);
@@ -264,7 +253,7 @@ static int pxa25x_ep_enable (struct usb_ep *_ep,
         ep->desc = desc;
         ep->stopped = 0;
         ep->pio_irqs = 0;
-        ep->ep.maxpacket = le16_to_cpu (desc->wMaxPacketSize);
+        ep->ep.maxpacket = usb_endpoint_maxp (desc);
 
         /* flush fifo (mostly for OUT buffers) */
         pxa25x_ep_fifo_flush (_ep);
@@ -401,7 +390,7 @@ write_fifo (struct pxa25x_ep *ep, struct pxa25x_request *req)
 {
         unsigned                max;
 
-        max = le16_to_cpu(ep->desc->wMaxPacketSize);
+        max = usb_endpoint_maxp(ep->desc);
         do {
                 unsigned        count;
                 int             is_last, is_short;
@@ -671,8 +660,7 @@ pxa25x_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
          * we can report per-packet status.  that also helps with dma.
          */
         if (unlikely (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC
-                        && req->req.length > le16_to_cpu
-                                                (ep->desc->wMaxPacketSize)))
+                        && req->req.length > usb_endpoint_maxp (ep->desc)))
                 return -EMSGSIZE;
 
         DBG(DBG_NOISY, "%s queue req %p, len %d buf %p\n",
@@ -1105,7 +1093,7 @@ udc_seq_show(struct seq_file *m, void *_d)
                         tmp = *dev->ep [i].reg_udccs;
                         seq_printf(m,
                                 "%s max %d %s udccs %02x irqs %lu\n",
-                                ep->ep.name, le16_to_cpu(desc->wMaxPacketSize),
+                                ep->ep.name, usb_endpoint_maxp(desc),
                                 "pio", tmp, ep->pio_irqs);
                         /* TODO translate all five groups of udccs bits! */
 
@@ -2202,7 +2190,7 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev)
 
         /* irq setup after old hardware state is cleaned up */
         retval = request_irq(irq, pxa25x_udc_irq,
-                        IRQF_DISABLED, driver_name, dev);
+                        0, driver_name, dev);
         if (retval != 0) {
                 pr_err("%s: can't get irq %d, err %d\n",
                         driver_name, irq, retval);
@@ -2214,7 +2202,7 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev)
         if (machine_is_lubbock()) {
                 retval = request_irq(LUBBOCK_USB_DISC_IRQ,
                                 lubbock_vbus_irq,
-                                IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
+                                IRQF_SAMPLE_RANDOM,
                                 driver_name, dev);
                 if (retval != 0) {
                         pr_err("%s: can't get irq %i, err %d\n",
@@ -2223,7 +2211,7 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev)
                 }
                 retval = request_irq(LUBBOCK_USB_IRQ,
                                 lubbock_vbus_irq,
-                                IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
+                                IRQF_SAMPLE_RANDOM,
                                 driver_name, dev);
                 if (retval != 0) {
                         pr_err("%s: can't get irq %i, err %d\n",
diff --git a/drivers/usb/gadget/pxa25x_udc.h b/drivers/usb/gadget/pxa25x_udc.h
index f572c5617462..8eaf4e43726b 100644
--- a/drivers/usb/gadget/pxa25x_udc.h
+++ b/drivers/usb/gadget/pxa25x_udc.h
@@ -9,15 +9,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef __LINUX_USB_GADGET_PXA25X_H
@@ -161,8 +152,6 @@ static struct pxa25x_udc *the_controller;
 
 #ifdef DEBUG
 
-static int is_vbus_present(void);
-
 static const char *state_name[] = {
         "EP0_IDLE",
         "EP0_IN_DATA_PHASE", "EP0_OUT_DATA_PHASE",
@@ -214,8 +203,7 @@ dump_state(struct pxa25x_udc *dev)
         u32             tmp;
         unsigned        i;
 
-        DMSG("%s %s, uicr %02X.%02X, usir %02X.%02x, ufnr %02X.%02X\n",
-                is_vbus_present() ? "host " : "disconnected",
+        DMSG("%s, uicr %02X.%02X, usir %02X.%02x, ufnr %02X.%02X\n",
                 state_name[dev->ep0state],
                 UICR1, UICR0, USIR1, USIR0, UFNRH, UFNRL);
         dump_udccr("udccr");
@@ -232,9 +220,6 @@ dump_state(struct pxa25x_udc *dev)
         } else
                 DMSG("ep0 driver '%s'\n", dev->driver->driver.name);
 
-        if (!is_vbus_present())
-                return;
-
         dump_udccs0 ("udccs0");
         DMSG("ep0 IN %lu/%lu, OUT %lu/%lu\n",
                 dev->stats.write.bytes, dev->stats.write.ops,
diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index 85b68c75dc9d..18b6b091f2a6 100644
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -8,16 +8,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  */
 #include <linux/module.h>
 #include <linux/kernel.h>
@@ -1439,7 +1429,7 @@ static int pxa_ep_enable(struct usb_ep *_ep,
                 return -EINVAL;
         }
 
-        if (ep->fifo_size < le16_to_cpu(desc->wMaxPacketSize)) {
+        if (ep->fifo_size < usb_endpoint_maxp(desc)) {
                 ep_err(ep, "bad maxpacket\n");
                 return -ERANGE;
         }
diff --git a/drivers/usb/gadget/pxa27x_udc.h b/drivers/usb/gadget/pxa27x_udc.h
index b01696eab068..7f4e8f424e80 100644
--- a/drivers/usb/gadget/pxa27x_udc.h
+++ b/drivers/usb/gadget/pxa27x_udc.h
@@ -9,15 +9,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef __LINUX_USB_GADGET_PXA27X_H
diff --git a/drivers/usb/gadget/r8a66597-udc.c b/drivers/usb/gadget/r8a66597-udc.c
index 50991e5bd5e8..68a826a1b866 100644
--- a/drivers/usb/gadget/r8a66597-udc.c
+++ b/drivers/usb/gadget/r8a66597-udc.c
@@ -8,16 +8,6 @@
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
  */
 
 #include <linux/module.h>
@@ -28,13 +18,14 @@
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/slab.h>
+#include <linux/dma-mapping.h>
 
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
 
 #include "r8a66597-udc.h"
 
-#define DRIVER_VERSION  "2009-08-18"
+#define DRIVER_VERSION  "2011-09-26"
 
 static const char udc_name[] = "r8a66597_udc";
 static const char *r8a66597_ep_name[] = {
@@ -115,13 +106,15 @@ static inline u16 control_reg_get_pid(struct r8a66597 *r8a66597, u16 pipenum)
         u16 pid = 0;
         unsigned long offset;
 
-        if (pipenum == 0)
+        if (pipenum == 0) {
                 pid = r8a66597_read(r8a66597, DCPCTR) & PID;
-        else if (pipenum < R8A66597_MAX_NUM_PIPE) {
+        } else if (pipenum < R8A66597_MAX_NUM_PIPE) {
                 offset = get_pipectr_addr(pipenum);
                 pid = r8a66597_read(r8a66597, offset) & PID;
-        } else
-                printk(KERN_ERR "unexpect pipe num (%d)\n", pipenum);
+        } else {
+                dev_err(r8a66597_to_dev(r8a66597), "unexpect pipe num (%d)\n",
+                        pipenum);
+        }
 
         return pid;
 }
@@ -131,13 +124,15 @@ static inline void control_reg_set_pid(struct r8a66597 *r8a66597, u16 pipenum,
 {
         unsigned long offset;
 
-        if (pipenum == 0)
+        if (pipenum == 0) {
                 r8a66597_mdfy(r8a66597, pid, PID, DCPCTR);
-        else if (pipenum < R8A66597_MAX_NUM_PIPE) {
+        } else if (pipenum < R8A66597_MAX_NUM_PIPE) {
                 offset = get_pipectr_addr(pipenum);
                 r8a66597_mdfy(r8a66597, pid, PID, offset);
-        } else
-                printk(KERN_ERR "unexpect pipe num (%d)\n", pipenum);
+        } else {
+                dev_err(r8a66597_to_dev(r8a66597), "unexpect pipe num (%d)\n",
+                        pipenum);
+        }
 }
 
 static inline void pipe_start(struct r8a66597 *r8a66597, u16 pipenum)
@@ -160,13 +155,15 @@ static inline u16 control_reg_get(struct r8a66597 *r8a66597, u16 pipenum)
         u16 ret = 0;
         unsigned long offset;
 
-        if (pipenum == 0)
+        if (pipenum == 0) {
                 ret = r8a66597_read(r8a66597, DCPCTR);
-        else if (pipenum < R8A66597_MAX_NUM_PIPE) {
+        } else if (pipenum < R8A66597_MAX_NUM_PIPE) {
                 offset = get_pipectr_addr(pipenum);
                 ret = r8a66597_read(r8a66597, offset);
-        } else
-                printk(KERN_ERR "unexpect pipe num (%d)\n", pipenum);
+        } else {
+                dev_err(r8a66597_to_dev(r8a66597), "unexpect pipe num (%d)\n",
+                        pipenum);
+        }
 
         return ret;
 }
@@ -177,13 +174,63 @@ static inline void control_reg_sqclr(struct r8a66597 *r8a66597, u16 pipenum)
 
         pipe_stop(r8a66597, pipenum);
 
-        if (pipenum == 0)
+        if (pipenum == 0) {
                 r8a66597_bset(r8a66597, SQCLR, DCPCTR);
-        else if (pipenum < R8A66597_MAX_NUM_PIPE) {
+        } else if (pipenum < R8A66597_MAX_NUM_PIPE) {
                 offset = get_pipectr_addr(pipenum);
                 r8a66597_bset(r8a66597, SQCLR, offset);
-        } else
-                printk(KERN_ERR "unexpect pipe num(%d)\n", pipenum);
+        } else {
+                dev_err(r8a66597_to_dev(r8a66597), "unexpect pipe num (%d)\n",
+                        pipenum);
+        }
+}
+
+static void control_reg_sqset(struct r8a66597 *r8a66597, u16 pipenum)
+{
+        unsigned long offset;
+
+        pipe_stop(r8a66597, pipenum);
+
+        if (pipenum == 0) {
+                r8a66597_bset(r8a66597, SQSET, DCPCTR);
+        } else if (pipenum < R8A66597_MAX_NUM_PIPE) {
+                offset = get_pipectr_addr(pipenum);
+                r8a66597_bset(r8a66597, SQSET, offset);
+        } else {
+                dev_err(r8a66597_to_dev(r8a66597),
+                        "unexpect pipe num(%d)\n", pipenum);
+        }
+}
+
+static u16 control_reg_sqmon(struct r8a66597 *r8a66597, u16 pipenum)
+{
+        unsigned long offset;
+
+        if (pipenum == 0) {
+                return r8a66597_read(r8a66597, DCPCTR) & SQMON;
+        } else if (pipenum < R8A66597_MAX_NUM_PIPE) {
+                offset = get_pipectr_addr(pipenum);
+                return r8a66597_read(r8a66597, offset) & SQMON;
+        } else {
+                dev_err(r8a66597_to_dev(r8a66597),
+                        "unexpect pipe num(%d)\n", pipenum);
+        }
+
+        return 0;
+}
+
+static u16 save_usb_toggle(struct r8a66597 *r8a66597, u16 pipenum)
+{
+        return control_reg_sqmon(r8a66597, pipenum);
+}
+
+static void restore_usb_toggle(struct r8a66597 *r8a66597, u16 pipenum,
+                               u16 toggle)
+{
+        if (toggle)
+                control_reg_sqset(r8a66597, pipenum);
+        else
+                control_reg_sqclr(r8a66597, pipenum);
 }
 
 static inline int get_buffer_size(struct r8a66597 *r8a66597, u16 pipenum)
@@ -222,18 +269,51 @@ static inline unsigned short mbw_value(struct r8a66597 *r8a66597)
                 return MBW_16;
 }
 
+static void r8a66597_change_curpipe(struct r8a66597 *r8a66597, u16 pipenum,
+                                    u16 isel, u16 fifosel)
+{
+        u16 tmp, mask, loop;
+        int i = 0;
+
+        if (!pipenum) {
+                mask = ISEL | CURPIPE;
+                loop = isel;
+        } else {
+                mask = CURPIPE;
+                loop = pipenum;
+        }
+        r8a66597_mdfy(r8a66597, loop, mask, fifosel);
+
+        do {
+                tmp = r8a66597_read(r8a66597, fifosel);
+                if (i++ > 1000000) {
+                        dev_err(r8a66597_to_dev(r8a66597),
+                                "r8a66597: register%x, loop %x "
+                                "is timeout\n", fifosel, loop);
+                        break;
+                }
+                ndelay(1);
+        } while ((tmp & mask) != loop);
+}
+
 static inline void pipe_change(struct r8a66597 *r8a66597, u16 pipenum)
 {
         struct r8a66597_ep *ep = r8a66597->pipenum2ep[pipenum];
 
         if (ep->use_dma)
-                return;
+                r8a66597_bclr(r8a66597, DREQE, ep->fifosel);
 
         r8a66597_mdfy(r8a66597, pipenum, CURPIPE, ep->fifosel);
 
         ndelay(450);
 
-        r8a66597_bset(r8a66597, mbw_value(r8a66597), ep->fifosel);
+        if (r8a66597_is_sudmac(r8a66597) && ep->use_dma)
+                r8a66597_bclr(r8a66597, mbw_value(r8a66597), ep->fifosel);
+        else
+                r8a66597_bset(r8a66597, mbw_value(r8a66597), ep->fifosel);
+
+        if (ep->use_dma)
+                r8a66597_bset(r8a66597, DREQE, ep->fifosel);
 }
 
 static int pipe_buffer_setting(struct r8a66597 *r8a66597,
@@ -297,17 +377,18 @@ static void pipe_buffer_release(struct r8a66597 *r8a66597,
         if (info->pipe == 0)
                 return;
 
-        if (is_bulk_pipe(info->pipe))
+        if (is_bulk_pipe(info->pipe)) {
                 r8a66597->bulk--;
-        else if (is_interrupt_pipe(info->pipe))
+        } else if (is_interrupt_pipe(info->pipe)) {
                 r8a66597->interrupt--;
-        else if (is_isoc_pipe(info->pipe)) {
+        } else if (is_isoc_pipe(info->pipe)) {
                 r8a66597->isochronous--;
                 if (info->type == R8A66597_BULK)
                         r8a66597->bulk--;
-        } else
-                printk(KERN_ERR "ep_release: unexpect pipenum (%d)\n",
-                                info->pipe);
+        } else {
+                dev_err(r8a66597_to_dev(r8a66597),
+                        "ep_release: unexpect pipenum (%d)\n", info->pipe);
+        }
 }
 
 static void pipe_initialize(struct r8a66597_ep *ep)
@@ -337,11 +418,17 @@ static void r8a66597_ep_setting(struct r8a66597 *r8a66597,
         ep->fifoaddr = CFIFO;
         ep->fifosel = CFIFOSEL;
         ep->fifoctr = CFIFOCTR;
-        ep->fifotrn = 0;
 
         ep->pipectr = get_pipectr_addr(pipenum);
+        if (is_bulk_pipe(pipenum) || is_isoc_pipe(pipenum)) {
+                ep->pipetre = get_pipetre_addr(pipenum);
+                ep->pipetrn = get_pipetrn_addr(pipenum);
+        } else {
+                ep->pipetre = 0;
+                ep->pipetrn = 0;
+        }
         ep->pipenum = pipenum;
-        ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+        ep->ep.maxpacket = usb_endpoint_maxp(desc);
         r8a66597->pipenum2ep[pipenum] = ep;
         r8a66597->epaddr2ep[desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK]
                 = ep;
@@ -381,7 +468,8 @@ static int alloc_pipe_config(struct r8a66597_ep *ep,
         case USB_ENDPOINT_XFER_BULK:
                 if (r8a66597->bulk >= R8A66597_MAX_NUM_BULK) {
                         if (r8a66597->isochronous >= R8A66597_MAX_NUM_ISOC) {
-                                printk(KERN_ERR "bulk pipe is insufficient\n");
+                                dev_err(r8a66597_to_dev(r8a66597),
+                                        "bulk pipe is insufficient\n");
                                 return -ENODEV;
                         } else {
                                 info.pipe = R8A66597_BASE_PIPENUM_ISOC
@@ -397,7 +485,8 @@ static int alloc_pipe_config(struct r8a66597_ep *ep,
                 break;
         case USB_ENDPOINT_XFER_INT:
                 if (r8a66597->interrupt >= R8A66597_MAX_NUM_INT) {
-                        printk(KERN_ERR "interrupt pipe is insufficient\n");
+                        dev_err(r8a66597_to_dev(r8a66597),
+                                "interrupt pipe is insufficient\n");
                         return -ENODEV;
                 }
                 info.pipe = R8A66597_BASE_PIPENUM_INT + r8a66597->interrupt;
@@ -406,7 +495,8 @@ static int alloc_pipe_config(struct r8a66597_ep *ep,
                 break;
         case USB_ENDPOINT_XFER_ISOC:
                 if (r8a66597->isochronous >= R8A66597_MAX_NUM_ISOC) {
-                        printk(KERN_ERR "isochronous pipe is insufficient\n");
+                        dev_err(r8a66597_to_dev(r8a66597),
+                                "isochronous pipe is insufficient\n");
                         return -ENODEV;
                 }
                 info.pipe = R8A66597_BASE_PIPENUM_ISOC + r8a66597->isochronous;
@@ -414,13 +504,13 @@ static int alloc_pipe_config(struct r8a66597_ep *ep,
                 counter = &r8a66597->isochronous;
                 break;
         default:
-                printk(KERN_ERR "unexpect xfer type\n");
+                dev_err(r8a66597_to_dev(r8a66597), "unexpect xfer type\n");
                 return -EINVAL;
         }
         ep->type = info.type;
 
         info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
-        info.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+        info.maxpacket = usb_endpoint_maxp(desc);
         info.interval = desc->bInterval;
         if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
                 info.dir_in = 1;
@@ -429,7 +519,8 @@ static int alloc_pipe_config(struct r8a66597_ep *ep,
 
         ret = pipe_buffer_setting(r8a66597, &info);
         if (ret < 0) {
-                printk(KERN_ERR "pipe_buffer_setting fail\n");
+                dev_err(r8a66597_to_dev(r8a66597),
+                        "pipe_buffer_setting fail\n");
                 return ret;
         }
 
@@ -495,6 +586,124 @@ static void start_ep0_write(struct r8a66597_ep *ep,
         }
 }
 
+static void disable_fifosel(struct r8a66597 *r8a66597, u16 pipenum,
+                            u16 fifosel)
+{
+        u16 tmp;
+
+        tmp = r8a66597_read(r8a66597, fifosel) & CURPIPE;
+        if (tmp == pipenum)
+                r8a66597_change_curpipe(r8a66597, 0, 0, fifosel);
+}
+
+static void change_bfre_mode(struct r8a66597 *r8a66597, u16 pipenum,
+                             int enable)
+{
+        struct r8a66597_ep *ep = r8a66597->pipenum2ep[pipenum];
+        u16 tmp, toggle;
+
+        /* check current BFRE bit */
+        r8a66597_write(r8a66597, pipenum, PIPESEL);
+        tmp = r8a66597_read(r8a66597, PIPECFG) & R8A66597_BFRE;
+        if ((enable && tmp) || (!enable && !tmp))
+                return;
+
+        /* change BFRE bit */
+        pipe_stop(r8a66597, pipenum);
+        disable_fifosel(r8a66597, pipenum, CFIFOSEL);
+        disable_fifosel(r8a66597, pipenum, D0FIFOSEL);
+        disable_fifosel(r8a66597, pipenum, D1FIFOSEL);
+
+        toggle = save_usb_toggle(r8a66597, pipenum);
+
+        r8a66597_write(r8a66597, pipenum, PIPESEL);
+        if (enable)
+                r8a66597_bset(r8a66597, R8A66597_BFRE, PIPECFG);
+        else
+                r8a66597_bclr(r8a66597, R8A66597_BFRE, PIPECFG);
+
+        /* initialize for internal BFRE flag */
+        r8a66597_bset(r8a66597, ACLRM, ep->pipectr);
+        r8a66597_bclr(r8a66597, ACLRM, ep->pipectr);
+
+        restore_usb_toggle(r8a66597, pipenum, toggle);
+}
+
+static int sudmac_alloc_channel(struct r8a66597 *r8a66597,
+                                struct r8a66597_ep *ep,
+                                struct r8a66597_request *req)
+{
+        struct r8a66597_dma *dma;
+
+        if (!r8a66597_is_sudmac(r8a66597))
+                return -ENODEV;
+
+        /* Check transfer type */
+        if (!is_bulk_pipe(ep->pipenum))
+                return -EIO;
+
+        if (r8a66597->dma.used)
+                return -EBUSY;
+
+        /* set SUDMAC parameters */
+        dma = &r8a66597->dma;
+        dma->used = 1;
+        if (ep->desc->bEndpointAddress & USB_DIR_IN) {
+                dma->dir = 1;
+        } else {
+                dma->dir = 0;
+                change_bfre_mode(r8a66597, ep->pipenum, 1);
+        }
+
+        /* set r8a66597_ep paramters */
+        ep->use_dma = 1;
+        ep->dma = dma;
+        ep->fifoaddr = D0FIFO;
+        ep->fifosel = D0FIFOSEL;
+        ep->fifoctr = D0FIFOCTR;
+
+        /* dma mapping */
+        req->req.dma = dma_map_single(r8a66597_to_dev(ep->r8a66597),
+                                req->req.buf, req->req.length,
+                                dma->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+
+        return 0;
+}
+
+static void sudmac_free_channel(struct r8a66597 *r8a66597,
+                                struct r8a66597_ep *ep,
+                                struct r8a66597_request *req)
+{
+        if (!r8a66597_is_sudmac(r8a66597))
+                return;
+
+        dma_unmap_single(r8a66597_to_dev(ep->r8a66597),
+                         req->req.dma, req->req.length,
+                         ep->dma->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+
+        r8a66597_bclr(r8a66597, DREQE, ep->fifosel);
+        r8a66597_change_curpipe(r8a66597, 0, 0, ep->fifosel);
+
+        ep->dma->used = 0;
+        ep->use_dma = 0;
+        ep->fifoaddr = CFIFO;
+        ep->fifosel = CFIFOSEL;
+        ep->fifoctr = CFIFOCTR;
+}
+
+static void sudmac_start(struct r8a66597 *r8a66597, struct r8a66597_ep *ep,
+                         struct r8a66597_request *req)
+{
+        BUG_ON(req->req.length == 0);
+
+        r8a66597_sudmac_write(r8a66597, LBA_WAIT, CH0CFG);
+        r8a66597_sudmac_write(r8a66597, req->req.dma, CH0BA);
+        r8a66597_sudmac_write(r8a66597, req->req.length, CH0BBC);
+        r8a66597_sudmac_write(r8a66597, CH0ENDE, DINTCTRL);
+
+        r8a66597_sudmac_write(r8a66597, DEN, CH0DEN);
+}
+
 static void start_packet_write(struct r8a66597_ep *ep,
                                 struct r8a66597_request *req)
 {
@@ -505,11 +714,29 @@ static void start_packet_write(struct r8a66597_ep *ep,
         disable_irq_empty(r8a66597, ep->pipenum);
         pipe_start(r8a66597, ep->pipenum);
 
-        tmp = r8a66597_read(r8a66597, ep->fifoctr);
-        if (unlikely((tmp & FRDY) == 0))
-                pipe_irq_enable(r8a66597, ep->pipenum);
-        else
-                irq_packet_write(ep, req);
+        if (req->req.length == 0) {
+                transfer_complete(ep, req, 0);
+        } else {
+                r8a66597_write(r8a66597, ~(1 << ep->pipenum), BRDYSTS);
+                if (sudmac_alloc_channel(r8a66597, ep, req) < 0) {
+                        /* PIO mode */
+                        pipe_change(r8a66597, ep->pipenum);
+                        disable_irq_empty(r8a66597, ep->pipenum);
+                        pipe_start(r8a66597, ep->pipenum);
+                        tmp = r8a66597_read(r8a66597, ep->fifoctr);
+                        if (unlikely((tmp & FRDY) == 0))
+                                pipe_irq_enable(r8a66597, ep->pipenum);
+                        else
+                                irq_packet_write(ep, req);
+                } else {
+                        /* DMA mode */
+                        pipe_change(r8a66597, ep->pipenum);
+                        disable_irq_nrdy(r8a66597, ep->pipenum);
+                        pipe_start(r8a66597, ep->pipenum);
+                        enable_irq_nrdy(r8a66597, ep->pipenum);
+                        sudmac_start(r8a66597, ep, req);
+                }
+        }
 }
 
 static void start_packet_read(struct r8a66597_ep *ep,
@@ -524,17 +751,26 @@ static void start_packet_read(struct r8a66597_ep *ep,
                 pipe_start(r8a66597, pipenum);
                 pipe_irq_enable(r8a66597, pipenum);
         } else {
-                if (ep->use_dma) {
-                        r8a66597_bset(r8a66597, TRCLR, ep->fifosel);
-                        pipe_change(r8a66597, pipenum);
-                        r8a66597_bset(r8a66597, TRENB, ep->fifosel);
+                pipe_stop(r8a66597, pipenum);
+                if (ep->pipetre) {
+                        enable_irq_nrdy(r8a66597, pipenum);
+                        r8a66597_write(r8a66597, TRCLR, ep->pipetre);
                         r8a66597_write(r8a66597,
-                                (req->req.length + ep->ep.maxpacket - 1)
-                                        / ep->ep.maxpacket,
-                                ep->fifotrn);
+                                DIV_ROUND_UP(req->req.length, ep->ep.maxpacket),
+                                ep->pipetrn);
+                        r8a66597_bset(r8a66597, TRENB, ep->pipetre);
+                }
+
+                if (sudmac_alloc_channel(r8a66597, ep, req) < 0) {
+                        /* PIO mode */
+                        change_bfre_mode(r8a66597, ep->pipenum, 0);
+                        pipe_start(r8a66597, pipenum);  /* trigger once */
+                        pipe_irq_enable(r8a66597, pipenum);
+                } else {
+                        pipe_change(r8a66597, pipenum);
+                        sudmac_start(r8a66597, ep, req);
+                        pipe_start(r8a66597, pipenum);  /* trigger once */
                 }
-                pipe_start(r8a66597, pipenum);  /* trigger once */
-                pipe_irq_enable(r8a66597, pipenum);
         }
 }
 
@@ -564,7 +800,8 @@ static void start_ep0(struct r8a66597_ep *ep, struct r8a66597_request *req)
                 control_end(ep->r8a66597, 0);
                 break;
         default:
-                printk(KERN_ERR "start_ep0: unexpect ctsq(%x)\n", ctsq);
+                dev_err(r8a66597_to_dev(ep->r8a66597),
+                        "start_ep0: unexpect ctsq(%x)\n", ctsq);
                 break;
         }
 }
@@ -690,6 +927,9 @@ __acquires(r8a66597->lock)
         if (!list_empty(&ep->queue))
                 restart = 1;
 
+        if (ep->use_dma)
+                sudmac_free_channel(ep->r8a66597, ep, req);
+
         spin_unlock(&ep->r8a66597->lock);
         req->req.complete(&ep->ep, &req->req);
         spin_lock(&ep->r8a66597->lock);
@@ -718,7 +958,8 @@ static void irq_ep0_write(struct r8a66597_ep *ep, struct r8a66597_request *req)
         do {
                 tmp = r8a66597_read(r8a66597, ep->fifoctr);
                 if (i++ > 100000) {
-                        printk(KERN_ERR "pipe0 is busy. maybe cpu i/o bus"
+                        dev_err(r8a66597_to_dev(r8a66597),
+                                "pipe0 is busy. maybe cpu i/o bus "
                                 "conflict. please power off this controller.");
                         return;
                 }
@@ -733,7 +974,7 @@ static void irq_ep0_write(struct r8a66597_ep *ep, struct r8a66597_request *req)
         /* write fifo */
         if (req->req.buf) {
                 if (size > 0)
-                        r8a66597_write_fifo(r8a66597, ep->fifoaddr, buf, size);
+                        r8a66597_write_fifo(r8a66597, ep, buf, size);
                 if ((size == 0) || ((size % ep->ep.maxpacket) != 0))
                         r8a66597_bset(r8a66597, BVAL, ep->fifoctr);
         }
@@ -769,7 +1010,8 @@ static void irq_packet_write(struct r8a66597_ep *ep,
         if (unlikely((tmp & FRDY) == 0)) {
                 pipe_stop(r8a66597, pipenum);
                 pipe_irq_disable(r8a66597, pipenum);
-                printk(KERN_ERR "write fifo not ready. pipnum=%d\n", pipenum);
+                dev_err(r8a66597_to_dev(r8a66597),
+                        "write fifo not ready. pipnum=%d\n", pipenum);
                 return;
         }
 
@@ -780,7 +1022,7 @@ static void irq_packet_write(struct r8a66597_ep *ep,
 
         /* write fifo */
         if (req->req.buf) {
-                r8a66597_write_fifo(r8a66597, ep->fifoaddr, buf, size);
+                r8a66597_write_fifo(r8a66597, ep, buf, size);
                 if ((size == 0)
                                 || ((size % ep->ep.maxpacket) != 0)
                                 || ((bufsize != ep->ep.maxpacket)
@@ -819,7 +1061,7 @@ static void irq_packet_read(struct r8a66597_ep *ep,
                 req->req.status = -EPIPE;
                 pipe_stop(r8a66597, pipenum);
                 pipe_irq_disable(r8a66597, pipenum);
-                printk(KERN_ERR "read fifo not ready");
+                dev_err(r8a66597_to_dev(r8a66597), "read fifo not ready");
                 return;
         }
 
@@ -1095,7 +1337,7 @@ static void r8a66597_update_usb_speed(struct r8a66597 *r8a66597)
                 break;
         default:
                 r8a66597->gadget.speed = USB_SPEED_UNKNOWN;
-                printk(KERN_ERR "USB speed unknown\n");
+                dev_err(r8a66597_to_dev(r8a66597), "USB speed unknown\n");
         }
 }
 
@@ -1158,11 +1400,71 @@ __acquires(r8a66597->lock)
                 control_end(r8a66597, 0);
                 break;
         default:
-                printk(KERN_ERR "ctrl_stage: unexpect ctsq(%x)\n", ctsq);
+                dev_err(r8a66597_to_dev(r8a66597),
+                        "ctrl_stage: unexpect ctsq(%x)\n", ctsq);
                 break;
         }
 }
 
+static void sudmac_finish(struct r8a66597 *r8a66597, struct r8a66597_ep *ep)
+{
+        u16 pipenum;
+        struct r8a66597_request *req;
+        u32 len;
+        int i = 0;
+
+        pipenum = ep->pipenum;
+        pipe_change(r8a66597, pipenum);
+
+        while (!(r8a66597_read(r8a66597, ep->fifoctr) & FRDY)) {
+                udelay(1);
+                if (unlikely(i++ >= 10000)) {   /* timeout = 10 msec */
+                        dev_err(r8a66597_to_dev(r8a66597),
+                                "%s: FRDY was not set (%d)\n",
+                                __func__, pipenum);
+                        return;
+                }
+        }
+
+        r8a66597_bset(r8a66597, BCLR, ep->fifoctr);
+        req = get_request_from_ep(ep);
+
+        /* prepare parameters */
+        len = r8a66597_sudmac_read(r8a66597, CH0CBC);
+        req->req.actual += len;
+
+        /* clear */
+        r8a66597_sudmac_write(r8a66597, CH0STCLR, DSTSCLR);
+
+        /* check transfer finish */
+        if ((!req->req.zero && (req->req.actual == req->req.length))
+                        || (len % ep->ep.maxpacket)) {
+                if (ep->dma->dir) {
+                        disable_irq_ready(r8a66597, pipenum);
+                        enable_irq_empty(r8a66597, pipenum);
+                } else {
+                        /* Clear the interrupt flag for next transfer */
+                        r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
+                        transfer_complete(ep, req, 0);
+                }
+        }
+}
+
+static void r8a66597_sudmac_irq(struct r8a66597 *r8a66597)
+{
+        u32 irqsts;
+        struct r8a66597_ep *ep;
+        u16 pipenum;
+
+        irqsts = r8a66597_sudmac_read(r8a66597, DINTSTS);
+        if (irqsts & CH0ENDS) {
+                r8a66597_sudmac_write(r8a66597, CH0ENDC, DINTSTSCLR);
+                pipenum = (r8a66597_read(r8a66597, D0FIFOSEL) & CURPIPE);
+                ep = r8a66597->pipenum2ep[pipenum];
+                sudmac_finish(r8a66597, ep);
+        }
+}
+
 static irqreturn_t r8a66597_irq(int irq, void *_r8a66597)
 {
         struct r8a66597 *r8a66597 = _r8a66597;
@@ -1173,6 +1475,9 @@ static irqreturn_t r8a66597_irq(int irq, void *_r8a66597)
         u16 savepipe;
         u16 mask0;
 
+        if (r8a66597_is_sudmac(r8a66597))
+                r8a66597_sudmac_irq(r8a66597);
+
         spin_lock(&r8a66597->lock);
 
         intsts0 = r8a66597_read(r8a66597, INTSTS0);
@@ -1433,23 +1738,18 @@ static struct usb_ep_ops r8a66597_ep_ops = {
 };
 
 /*-------------------------------------------------------------------------*/
-static struct r8a66597 *the_controller;
-
-static int r8a66597_start(struct usb_gadget_driver *driver,
-                int (*bind)(struct usb_gadget *))
+static int r8a66597_start(struct usb_gadget *gadget,
+                struct usb_gadget_driver *driver)
 {
-        struct r8a66597 *r8a66597 = the_controller;
+        struct r8a66597 *r8a66597 = gadget_to_r8a66597(gadget);
         int retval;
 
         if (!driver
                         || driver->speed != USB_SPEED_HIGH
-                        || !bind
                         || !driver->setup)
                 return -EINVAL;
         if (!r8a66597)
                 return -ENODEV;
-        if (r8a66597->driver)
-                return -EBUSY;
 
         /* hook up the driver */
         driver->driver.bus = NULL;
@@ -1458,14 +1758,8 @@ static int r8a66597_start(struct usb_gadget_driver *driver,
 
         retval = device_add(&r8a66597->gadget.dev);
         if (retval) {
-                printk(KERN_ERR "device_add error (%d)\n", retval);
-                goto error;
-        }
-
-        retval = bind(&r8a66597->gadget);
-        if (retval) {
-                printk(KERN_ERR "bind to driver error (%d)\n", retval);
-                device_del(&r8a66597->gadget.dev);
+                dev_err(r8a66597_to_dev(r8a66597), "device_add error (%d)\n",
+                        retval);
                 goto error;
         }
 
@@ -1489,23 +1783,17 @@ error:
         return retval;
 }
 
-static int r8a66597_stop(struct usb_gadget_driver *driver)
+static int r8a66597_stop(struct usb_gadget *gadget,
+                struct usb_gadget_driver *driver)
 {
-        struct r8a66597 *r8a66597 = the_controller;
+        struct r8a66597 *r8a66597 = gadget_to_r8a66597(gadget);
         unsigned long flags;
 
-        if (driver != r8a66597->driver || !driver->unbind)
-                return -EINVAL;
-
         spin_lock_irqsave(&r8a66597->lock, flags);
-        if (r8a66597->gadget.speed != USB_SPEED_UNKNOWN)
-                r8a66597_usb_disconnect(r8a66597);
         r8a66597_bclr(r8a66597, VBSE, INTENB0);
         disable_controller(r8a66597);
         spin_unlock_irqrestore(&r8a66597->lock, flags);
 
-        driver->unbind(&r8a66597->gadget);
-
         device_del(&r8a66597->gadget.dev);
         r8a66597->driver = NULL;
         return 0;
@@ -1535,8 +1823,8 @@ static int r8a66597_pullup(struct usb_gadget *gadget, int is_on)
 
 static struct usb_gadget_ops r8a66597_gadget_ops = {
         .get_frame              = r8a66597_get_frame,
-        .start                  = r8a66597_start,
-        .stop                   = r8a66597_stop,
+        .udc_start              = r8a66597_start,
+        .udc_stop               = r8a66597_stop,
         .pullup                 = r8a66597_pullup,
 };
 
@@ -1547,6 +1835,8 @@ static int __exit r8a66597_remove(struct platform_device *pdev)
         usb_del_gadget_udc(&r8a66597->gadget);
         del_timer_sync(&r8a66597->timer);
         iounmap(r8a66597->reg);
+        if (r8a66597->pdata->sudmac)
+                iounmap(r8a66597->sudmac_reg);
         free_irq(platform_get_irq(pdev, 0), r8a66597);
         r8a66597_free_request(&r8a66597->ep[0].ep, r8a66597->ep0_req);
 #ifdef CONFIG_HAVE_CLK
@@ -1563,6 +1853,26 @@ static void nop_completion(struct usb_ep *ep, struct usb_request *r)
 {
 }
 
+static int __init r8a66597_sudmac_ioremap(struct r8a66597 *r8a66597,
+                                          struct platform_device *pdev)
+{
+        struct resource *res;
+
+        res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sudmac");
+        if (!res) {
+                dev_err(&pdev->dev, "platform_get_resource error(sudmac).\n");
+                return -ENODEV;
+        }
+
+        r8a66597->sudmac_reg = ioremap(res->start, resource_size(res));
+        if (r8a66597->sudmac_reg == NULL) {
+                dev_err(&pdev->dev, "ioremap error(sudmac).\n");
+                return -ENOMEM;
+        }
+
+        return 0;
+}
+
 static int __init r8a66597_probe(struct platform_device *pdev)
 {
 #ifdef CONFIG_HAVE_CLK
@@ -1579,7 +1889,7 @@ static int __init r8a66597_probe(struct platform_device *pdev)
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (!res) {
                 ret = -ENODEV;
-                printk(KERN_ERR "platform_get_resource error.\n");
+                dev_err(&pdev->dev, "platform_get_resource error.\n");
                 goto clean_up;
         }
 
@@ -1589,14 +1899,14 @@ static int __init r8a66597_probe(struct platform_device *pdev)
 
         if (irq < 0) {
                 ret = -ENODEV;
-                printk(KERN_ERR "platform_get_irq error.\n");
+                dev_err(&pdev->dev, "platform_get_irq error.\n");
                 goto clean_up;
         }
 
         reg = ioremap(res->start, resource_size(res));
         if (reg == NULL) {
                 ret = -ENOMEM;
-                printk(KERN_ERR "ioremap error.\n");
+                dev_err(&pdev->dev, "ioremap error.\n");
                 goto clean_up;
         }
 
@@ -1604,7 +1914,7 @@ static int __init r8a66597_probe(struct platform_device *pdev)
         r8a66597 = kzalloc(sizeof(struct r8a66597), GFP_KERNEL);
         if (r8a66597 == NULL) {
                 ret = -ENOMEM;
-                printk(KERN_ERR "kzalloc error\n");
+                dev_err(&pdev->dev, "kzalloc error\n");
                 goto clean_up;
         }
 
@@ -1640,13 +1950,18 @@ static int __init r8a66597_probe(struct platform_device *pdev)
                 clk_enable(r8a66597->clk);
         }
 #endif
+        if (r8a66597->pdata->sudmac) {
+                ret = r8a66597_sudmac_ioremap(r8a66597, pdev);
+                if (ret < 0)
+                        goto clean_up2;
+        }
 
         disable_controller(r8a66597); /* make sure controller is disabled */
 
-        ret = request_irq(irq, r8a66597_irq, IRQF_DISABLED | IRQF_SHARED,
+        ret = request_irq(irq, r8a66597_irq, IRQF_SHARED,
                         udc_name, r8a66597);
         if (ret < 0) {
-                printk(KERN_ERR "request_irq error (%d)\n", ret);
+                dev_err(&pdev->dev, "request_irq error (%d)\n", ret);
                 goto clean_up2;
         }
 
@@ -1672,13 +1987,10 @@ static int __init r8a66597_probe(struct platform_device *pdev)
         r8a66597->ep[0].fifoaddr = CFIFO;
         r8a66597->ep[0].fifosel = CFIFOSEL;
         r8a66597->ep[0].fifoctr = CFIFOCTR;
-        r8a66597->ep[0].fifotrn = 0;
         r8a66597->ep[0].pipectr = get_pipectr_addr(0);
         r8a66597->pipenum2ep[0] = &r8a66597->ep[0];
         r8a66597->epaddr2ep[0] = &r8a66597->ep[0];
 
-        the_controller = r8a66597;
-
         r8a66597->ep0_req = r8a66597_alloc_request(&r8a66597->ep[0].ep,
                                                         GFP_KERNEL);
         if (r8a66597->ep0_req == NULL)
@@ -1705,6 +2017,8 @@ clean_up2:
 #endif
 clean_up:
         if (r8a66597) {
+                if (r8a66597->sudmac_reg)
+                        iounmap(r8a66597->sudmac_reg);
                 if (r8a66597->ep0_req)
                         r8a66597_free_request(&r8a66597->ep[0].ep,
                                                 r8a66597->ep0_req);
diff --git a/drivers/usb/gadget/r8a66597-udc.h b/drivers/usb/gadget/r8a66597-udc.h
index 503f766c23a7..8e3de61cd4b8 100644
--- a/drivers/usb/gadget/r8a66597-udc.h
+++ b/drivers/usb/gadget/r8a66597-udc.h
@@ -8,16 +8,6 @@
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
  */
 
 #ifndef __R8A66597_H__
@@ -53,6 +43,7 @@
         ((pipenum >= R8A66597_BASE_PIPENUM_ISOC) && \
          (pipenum < (R8A66597_BASE_PIPENUM_ISOC + R8A66597_MAX_NUM_ISOC)))
 
+#define r8a66597_is_sudmac(r8a66597)    (r8a66597->pdata->sudmac)
 struct r8a66597_pipe_info {
         u16     pipe;
         u16     epnum;
@@ -70,6 +61,7 @@ struct r8a66597_request {
 struct r8a66597_ep {
         struct usb_ep           ep;
         struct r8a66597         *r8a66597;
+        struct r8a66597_dma     *dma;
 
         struct list_head        queue;
         unsigned                busy:1;
@@ -85,13 +77,20 @@ struct r8a66597_ep {
         unsigned char           fifoaddr;
         unsigned char           fifosel;
         unsigned char           fifoctr;
-        unsigned char           fifotrn;
         unsigned char           pipectr;
+        unsigned char           pipetre;
+        unsigned char           pipetrn;
+};
+
+struct r8a66597_dma {
+        unsigned                used:1;
+        unsigned                dir:1;  /* 1 = IN(write), 0 = OUT(read) */
 };
 
 struct r8a66597 {
         spinlock_t              lock;
         void __iomem            *reg;
+        void __iomem            *sudmac_reg;
 
 #ifdef CONFIG_HAVE_CLK
         struct clk *clk;
@@ -104,6 +103,7 @@ struct r8a66597 {
         struct r8a66597_ep      ep[R8A66597_MAX_NUM_PIPE];
         struct r8a66597_ep      *pipenum2ep[R8A66597_MAX_NUM_PIPE];
         struct r8a66597_ep      *epaddr2ep[16];
+        struct r8a66597_dma     dma;
 
         struct timer_list       timer;
         struct usb_request      *ep0_req;       /* for internal request */
@@ -124,6 +124,7 @@ struct r8a66597 {
 #define gadget_to_r8a66597(_gadget)     \
                 container_of(_gadget, struct r8a66597, gadget)
 #define r8a66597_to_gadget(r8a66597) (&r8a66597->gadget)
+#define r8a66597_to_dev(r8a66597)       (r8a66597->gadget.dev.parent)
 
 static inline u16 r8a66597_read(struct r8a66597 *r8a66597, unsigned long offset)
 {
@@ -182,12 +183,27 @@ static inline void r8a66597_write(struct r8a66597 *r8a66597, u16 val,
         iowrite16(val, r8a66597->reg + offset);
 }
 
+static inline void r8a66597_mdfy(struct r8a66597 *r8a66597,
+                                 u16 val, u16 pat, unsigned long offset)
+{
+        u16 tmp;
+        tmp = r8a66597_read(r8a66597, offset);
+        tmp = tmp & (~pat);
+        tmp = tmp | val;
+        r8a66597_write(r8a66597, tmp, offset);
+}
+
+#define r8a66597_bclr(r8a66597, val, offset)    \
+                        r8a66597_mdfy(r8a66597, 0, val, offset)
+#define r8a66597_bset(r8a66597, val, offset)    \
+                        r8a66597_mdfy(r8a66597, val, 0, offset)
+
 static inline void r8a66597_write_fifo(struct r8a66597 *r8a66597,
-                                       unsigned long offset,
+                                       struct r8a66597_ep *ep,
                                        unsigned char *buf,
                                        int len)
 {
-        void __iomem *fifoaddr = r8a66597->reg + offset;
+        void __iomem *fifoaddr = r8a66597->reg + ep->fifoaddr;
         int adj = 0;
         int i;
 
@@ -215,18 +231,12 @@ static inline void r8a66597_write_fifo(struct r8a66597 *r8a66597,
                         adj = 0x01; /* 16-bit wide */
         }
 
+        if (r8a66597->pdata->wr0_shorted_to_wr1)
+                r8a66597_bclr(r8a66597, MBW_16, ep->fifosel);
         for (i = 0; i < len; i++)
                 iowrite8(buf[i], fifoaddr + adj - (i & adj));
-}
-
-static inline void r8a66597_mdfy(struct r8a66597 *r8a66597,
-                                 u16 val, u16 pat, unsigned long offset)
-{
-        u16 tmp;
-        tmp = r8a66597_read(r8a66597, offset);
-        tmp = tmp & (~pat);
-        tmp = tmp | val;
-        r8a66597_write(r8a66597, tmp, offset);
+        if (r8a66597->pdata->wr0_shorted_to_wr1)
+                r8a66597_bclr(r8a66597, MBW_16, ep->fifosel);
 }
 
 static inline u16 get_xtal_from_pdata(struct r8a66597_platdata *pdata)
@@ -251,12 +261,21 @@ static inline u16 get_xtal_from_pdata(struct r8a66597_platdata *pdata)
         return clock;
 }
 
-#define r8a66597_bclr(r8a66597, val, offset)    \
-                        r8a66597_mdfy(r8a66597, 0, val, offset)
-#define r8a66597_bset(r8a66597, val, offset)    \
-                        r8a66597_mdfy(r8a66597, val, 0, offset)
+static inline u32 r8a66597_sudmac_read(struct r8a66597 *r8a66597,
+                                       unsigned long offset)
+{
+        return ioread32(r8a66597->sudmac_reg + offset);
+}
+
+static inline void r8a66597_sudmac_write(struct r8a66597 *r8a66597, u32 val,
+                                         unsigned long offset)
+{
+        iowrite32(val, r8a66597->sudmac_reg + offset);
+}
 
 #define get_pipectr_addr(pipenum)       (PIPE1CTR + (pipenum - 1) * 2)
+#define get_pipetre_addr(pipenum)       (PIPE1TRE + (pipenum - 1) * 4)
+#define get_pipetrn_addr(pipenum)       (PIPE1TRN + (pipenum - 1) * 4)
 
 #define enable_irq_ready(r8a66597, pipenum)     \
         enable_pipe_irq(r8a66597, pipenum, BRDYENB)
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index 8bdee67ce09a..a552453dc946 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -1951,30 +1951,26 @@ static void s3c_hsotg_irq_enumdone(struct s3c_hsotg *hsotg)
         case S3C_DSTS_EnumSpd_FS:
         case S3C_DSTS_EnumSpd_FS48:
                 hsotg->gadget.speed = USB_SPEED_FULL;
-                dev_info(hsotg->dev, "new device is full-speed\n");
-
                 ep0_mps = EP0_MPS_LIMIT;
                 ep_mps = 64;
                 break;
 
         case S3C_DSTS_EnumSpd_HS:
-                dev_info(hsotg->dev, "new device is high-speed\n");
                 hsotg->gadget.speed = USB_SPEED_HIGH;
-
                 ep0_mps = EP0_MPS_LIMIT;
                 ep_mps = 512;
                 break;
 
         case S3C_DSTS_EnumSpd_LS:
                 hsotg->gadget.speed = USB_SPEED_LOW;
-                dev_info(hsotg->dev, "new device is low-speed\n");
-
                 /* note, we don't actually support LS in this driver at the
                  * moment, and the documentation seems to imply that it isn't
                  * supported by the PHYs on some of the devices.
                  */
                 break;
         }
+        dev_info(hsotg->dev, "new device is %s\n",
+                 usb_speed_string(hsotg->gadget.speed));
 
         /* we should now know the maximum packet size for an
          * endpoint, so set the endpoints to a default value. */
@@ -2297,7 +2293,7 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep,
                 return -EINVAL;
         }
 
-        mps = le16_to_cpu(desc->wMaxPacketSize);
+        mps = usb_endpoint_maxp(desc);
 
         /* note, we handle this here instead of s3c_hsotg_set_ep_maxpacket */
 
diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c
index 3fa717c5f4bc..8d54f893cefe 100644
--- a/drivers/usb/gadget/s3c-hsudc.c
+++ b/drivers/usb/gadget/s3c-hsudc.c
@@ -26,6 +26,7 @@
 #include <linux/clk.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
+#include <linux/usb/otg.h>
 #include <linux/prefetch.h>
 
 #include <mach/regs-s3c2443-clock.h>
@@ -137,6 +138,7 @@ struct s3c_hsudc {
         struct usb_gadget_driver *driver;
         struct device *dev;
         struct s3c24xx_hsudc_platdata *pd;
+        struct otg_transceiver *transceiver;
         spinlock_t lock;
         void __iomem *regs;
         struct resource *mem_rsrc;
@@ -759,11 +761,11 @@ static int s3c_hsudc_ep_enable(struct usb_ep *_ep,
         if (!_ep || !desc || hsep->desc || _ep->name == ep0name
                 || desc->bDescriptorType != USB_DT_ENDPOINT
                 || hsep->bEndpointAddress != desc->bEndpointAddress
-                || ep_maxpacket(hsep) < le16_to_cpu(desc->wMaxPacketSize))
+                || ep_maxpacket(hsep) < usb_endpoint_maxp(desc))
                 return -EINVAL;
 
         if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
-                && le16_to_cpu(desc->wMaxPacketSize) != ep_maxpacket(hsep))
+                && usb_endpoint_maxp(desc) != ep_maxpacket(hsep))
                 || !desc->wMaxPacketSize)
                 return -ERANGE;
 
@@ -779,7 +781,7 @@ static int s3c_hsudc_ep_enable(struct usb_ep *_ep,
 
         hsep->stopped = hsep->wedge = 0;
         hsep->desc = desc;
-        hsep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+        hsep->ep.maxpacket = usb_endpoint_maxp(desc);
 
         s3c_hsudc_set_halt(_ep, 0);
         __set_bit(ep_index(hsep), hsudc->regs + S3C_EIER);
@@ -1171,6 +1173,22 @@ static int s3c_hsudc_start(struct usb_gadget_driver *driver,
                 return ret;
         }
 
+        /* connect to bus through transceiver */
+        if (hsudc->transceiver) {
+                ret = otg_set_peripheral(hsudc->transceiver, &hsudc->gadget);
+                if (ret) {
+                        dev_err(hsudc->dev, "%s: can't bind to transceiver\n",
+                                        hsudc->gadget.name);
+                        driver->unbind(&hsudc->gadget);
+
+                        device_del(&hsudc->gadget.dev);
+
+                        hsudc->driver = NULL;
+                        hsudc->gadget.dev.driver = NULL;
+                        return ret;
+                }
+        }
+
         enable_irq(hsudc->irq);
         dev_info(hsudc->dev, "bound driver %s\n", driver->driver.name);
 
@@ -1201,6 +1219,9 @@ static int s3c_hsudc_stop(struct usb_gadget_driver *driver)
         s3c_hsudc_stop_activity(hsudc, driver);
         spin_unlock_irqrestore(&hsudc->lock, flags);
 
+        if (hsudc->transceiver)
+                (void) otg_set_peripheral(hsudc->transceiver, NULL);
+
         driver->unbind(&hsudc->gadget);
         device_del(&hsudc->gadget.dev);
         disable_irq(hsudc->irq);
@@ -1220,10 +1241,24 @@ static int s3c_hsudc_gadget_getframe(struct usb_gadget *gadget)
         return s3c_hsudc_read_frameno(to_hsudc(gadget));
 }
 
+static int s3c_hsudc_vbus_draw(struct usb_gadget *gadget, unsigned mA)
+{
+        struct s3c_hsudc *hsudc = the_controller;
+
+        if (!hsudc)
+                return -ENODEV;
+
+        if (hsudc->transceiver)
+                return otg_set_power(hsudc->transceiver, mA);
+
+        return -EOPNOTSUPP;
+}
+
 static struct usb_gadget_ops s3c_hsudc_gadget_ops = {
         .get_frame      = s3c_hsudc_gadget_getframe,
         .start          = s3c_hsudc_start,
         .stop           = s3c_hsudc_stop,
+        .vbus_draw      = s3c_hsudc_vbus_draw,
 };
 
 static int s3c_hsudc_probe(struct platform_device *pdev)
@@ -1247,6 +1282,8 @@ static int s3c_hsudc_probe(struct platform_device *pdev)
         hsudc->dev = dev;
         hsudc->pd = pdev->dev.platform_data;
 
+        hsudc->transceiver = otg_get_transceiver();
+
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (!res) {
                 dev_err(dev, "unable to obtain driver resource data\n");
@@ -1269,19 +1306,6 @@ static int s3c_hsudc_probe(struct platform_device *pdev)
                 goto err_remap;
         }
 
-        ret = platform_get_irq(pdev, 0);
-        if (ret < 0) {
-                dev_err(dev, "unable to obtain IRQ number\n");
-                goto err_irq;
-        }
-        hsudc->irq = ret;
-
-        ret = request_irq(hsudc->irq, s3c_hsudc_irq, 0, driver_name, hsudc);
-        if (ret < 0) {
-                dev_err(dev, "irq request failed\n");
-                goto err_irq;
-        }
-
         spin_lock_init(&hsudc->lock);
 
         device_initialize(&hsudc->gadget.dev);
@@ -1299,6 +1323,19 @@ static int s3c_hsudc_probe(struct platform_device *pdev)
 
         s3c_hsudc_setup_ep(hsudc);
 
+        ret = platform_get_irq(pdev, 0);
+        if (ret < 0) {
+                dev_err(dev, "unable to obtain IRQ number\n");
+                goto err_irq;
+        }
+        hsudc->irq = ret;
+
+        ret = request_irq(hsudc->irq, s3c_hsudc_irq, 0, driver_name, hsudc);
+        if (ret < 0) {
+                dev_err(dev, "irq request failed\n");
+                goto err_irq;
+        }
+
         hsudc->uclk = clk_get(&pdev->dev, "usb-device");
         if (IS_ERR(hsudc->uclk)) {
                 dev_err(dev, "failed to find usb-device clock source\n");
diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index 8d31848aab09..b8643771fa80 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -10,16 +10,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  */
 
 #include <linux/module.h>
@@ -1082,7 +1072,7 @@ static int s3c2410_udc_ep_enable(struct usb_ep *_ep,
         if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
                 return -ESHUTDOWN;
 
-        max = le16_to_cpu(desc->wMaxPacketSize) & 0x1fff;
+        max = usb_endpoint_maxp(desc) & 0x1fff;
 
         local_irq_save (flags);
         _ep->maxpacket = max & 0x7ff;
@@ -1903,7 +1893,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev)
 
         /* irq setup after old hardware state is cleaned up */
         retval = request_irq(IRQ_USBD, s3c2410_udc_irq,
-                             IRQF_DISABLED, gadget_name, udc);
+                             0, gadget_name, udc);
 
         if (retval != 0) {
                 dev_err(dev, "cannot get irq %i, err %d\n", IRQ_USBD, retval);
@@ -1927,7 +1917,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev)
                 }
 
                 retval = request_irq(irq, s3c2410_udc_vbus_irq,
-                                     IRQF_DISABLED | IRQF_TRIGGER_RISING
+                                     IRQF_TRIGGER_RISING
                                      | IRQF_TRIGGER_FALLING | IRQF_SHARED,
                                      gadget_name, udc);
 
diff --git a/drivers/usb/gadget/s3c2410_udc.h b/drivers/usb/gadget/s3c2410_udc.h
index 9e0bece4f241..a48f619cb1cc 100644
--- a/drivers/usb/gadget/s3c2410_udc.h
+++ b/drivers/usb/gadget/s3c2410_udc.h
@@ -9,16 +9,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  */
 
 #ifndef _S3C2410_UDC_H
diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c
index d3dd227a2bfc..c7f291a331df 100644
--- a/drivers/usb/gadget/storage_common.c
+++ b/drivers/usb/gadget/storage_common.c
@@ -9,15 +9,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 
@@ -52,6 +43,12 @@
  * characters rather then a pointer to void.
  */
 
+/*
+ * When USB_GADGET_DEBUG_FILES is defined the module param num_buffers
+ * sets the number of pipeline buffers (length of the fsg_buffhd array).
+ * The valid range of num_buffers is: num >= 2 && num <= 4.
+ */
+
 
 #include <linux/usb/storage.h>
 #include <scsi/scsi.h>
@@ -247,6 +244,8 @@ struct fsg_lun {
         u32             sense_data_info;
         u32             unit_attention_data;
 
+        unsigned int    blkbits;        /* Bits of logical block size of bound block device */
+        unsigned int    blksize;        /* logical block size of bound block device */
         struct device   dev;
 };
 
@@ -262,8 +261,31 @@ static struct fsg_lun *fsg_lun_from_dev(struct device *dev)
 #define EP0_BUFSIZE     256
 #define DELAYED_STATUS  (EP0_BUFSIZE + 999)     /* An impossibly large value */
 
-/* Number of buffers we will use.  2 is enough for double-buffering */
-#define FSG_NUM_BUFFERS 2
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+
+static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
+module_param_named(num_buffers, fsg_num_buffers, uint, S_IRUGO);
+MODULE_PARM_DESC(num_buffers, "Number of pipeline buffers");
+
+#else
+
+/*
+ * Number of buffers we will use.
+ * 2 is usually enough for good buffering pipeline
+ */
+#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS
+
+#endif /* CONFIG_USB_DEBUG */
+
+/* check if fsg_num_buffers is within a valid range */
+static inline int fsg_num_buffers_validate(void)
+{
+        if (fsg_num_buffers >= 2 && fsg_num_buffers <= 4)
+                return 0;
+        pr_err("fsg_num_buffers %u is out of range (%d to %d)\n",
+               fsg_num_buffers, 2 ,4);
+        return -EINVAL;
+}
 
 /* Default size of buffer length. */
 #define FSG_BUFLEN      ((u32)16384)
@@ -493,12 +515,128 @@ static struct usb_descriptor_header *fsg_hs_function[] = {
         NULL,
 };
 
+static struct usb_endpoint_descriptor
+fsg_ss_bulk_in_desc = {
+        .bLength =              USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+
+        /* bEndpointAddress copied from fs_bulk_in_desc during fsg_bind() */
+        .bmAttributes =         USB_ENDPOINT_XFER_BULK,
+        .wMaxPacketSize =       cpu_to_le16(1024),
+};
+
+static struct usb_ss_ep_comp_descriptor fsg_ss_bulk_in_comp_desc = {
+        .bLength =              sizeof(fsg_ss_bulk_in_comp_desc),
+        .bDescriptorType =      USB_DT_SS_ENDPOINT_COMP,
+
+        /*.bMaxBurst =          DYNAMIC, */
+};
+
+static struct usb_endpoint_descriptor
+fsg_ss_bulk_out_desc = {
+        .bLength =              USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+
+        /* bEndpointAddress copied from fs_bulk_out_desc during fsg_bind() */
+        .bmAttributes =         USB_ENDPOINT_XFER_BULK,
+        .wMaxPacketSize =       cpu_to_le16(1024),
+};
+
+static struct usb_ss_ep_comp_descriptor fsg_ss_bulk_out_comp_desc = {
+        .bLength =              sizeof(fsg_ss_bulk_in_comp_desc),
+        .bDescriptorType =      USB_DT_SS_ENDPOINT_COMP,
+
+        /*.bMaxBurst =          DYNAMIC, */
+};
+
+#ifndef FSG_NO_INTR_EP
+
+static struct usb_endpoint_descriptor
+fsg_ss_intr_in_desc = {
+        .bLength =              USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+
+        /* bEndpointAddress copied from fs_intr_in_desc during fsg_bind() */
+        .bmAttributes =         USB_ENDPOINT_XFER_INT,
+        .wMaxPacketSize =       cpu_to_le16(2),
+        .bInterval =            9,      /* 2**(9-1) = 256 uframes -> 32 ms */
+};
+
+static struct usb_ss_ep_comp_descriptor fsg_ss_intr_in_comp_desc = {
+        .bLength =              sizeof(fsg_ss_bulk_in_comp_desc),
+        .bDescriptorType =      USB_DT_SS_ENDPOINT_COMP,
+
+        .wBytesPerInterval =    cpu_to_le16(2),
+};
+
+#ifndef FSG_NO_OTG
+#  define FSG_SS_FUNCTION_PRE_EP_ENTRIES        2
+#else
+#  define FSG_SS_FUNCTION_PRE_EP_ENTRIES        1
+#endif
+
+#endif
+
+static __maybe_unused struct usb_ext_cap_descriptor fsg_ext_cap_desc = {
+        .bLength =              USB_DT_USB_EXT_CAP_SIZE,
+        .bDescriptorType =      USB_DT_DEVICE_CAPABILITY,
+        .bDevCapabilityType =   USB_CAP_TYPE_EXT,
+
+        .bmAttributes =         cpu_to_le32(USB_LPM_SUPPORT),
+};
+
+static __maybe_unused struct usb_ss_cap_descriptor fsg_ss_cap_desc = {
+        .bLength =              USB_DT_USB_SS_CAP_SIZE,
+        .bDescriptorType =      USB_DT_DEVICE_CAPABILITY,
+        .bDevCapabilityType =   USB_SS_CAP_TYPE,
+
+        /* .bmAttributes = LTM is not supported yet */
+
+        .wSpeedSupported =      cpu_to_le16(USB_LOW_SPEED_OPERATION
+                | USB_FULL_SPEED_OPERATION
+                | USB_HIGH_SPEED_OPERATION
+                | USB_5GBPS_OPERATION),
+        .bFunctionalitySupport = USB_LOW_SPEED_OPERATION,
+        .bU1devExitLat =        USB_DEFAULT_U1_DEV_EXIT_LAT,
+        .bU2DevExitLat =        USB_DEFAULT_U2_DEV_EXIT_LAT,
+};
+
+static __maybe_unused struct usb_bos_descriptor fsg_bos_desc = {
+        .bLength =              USB_DT_BOS_SIZE,
+        .bDescriptorType =      USB_DT_BOS,
+
+        .wTotalLength =         USB_DT_BOS_SIZE
+                                + USB_DT_USB_EXT_CAP_SIZE
+                                + USB_DT_USB_SS_CAP_SIZE,
+
+        .bNumDeviceCaps =       2,
+};
+
+static struct usb_descriptor_header *fsg_ss_function[] = {
+#ifndef FSG_NO_OTG
+        (struct usb_descriptor_header *) &fsg_otg_desc,
+#endif
+        (struct usb_descriptor_header *) &fsg_intf_desc,
+        (struct usb_descriptor_header *) &fsg_ss_bulk_in_desc,
+        (struct usb_descriptor_header *) &fsg_ss_bulk_in_comp_desc,
+        (struct usb_descriptor_header *) &fsg_ss_bulk_out_desc,
+        (struct usb_descriptor_header *) &fsg_ss_bulk_out_comp_desc,
+#ifndef FSG_NO_INTR_EP
+        (struct usb_descriptor_header *) &fsg_ss_intr_in_desc,
+        (struct usb_descriptor_header *) &fsg_ss_intr_in_comp_desc,
+#endif
+        NULL,
+};
+
 /* Maxpacket and other transfer characteristics vary by speed. */
 static __maybe_unused struct usb_endpoint_descriptor *
 fsg_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
-                struct usb_endpoint_descriptor *hs)
+                struct usb_endpoint_descriptor *hs,
+                struct usb_endpoint_descriptor *ss)
 {
-        if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
+        if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER)
+                return ss;
+        else if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
                 return hs;
         return fs;
 }
@@ -580,13 +718,24 @@ static int fsg_lun_open(struct fsg_lun *curlun, const char *filename)
                 rc = (int) size;
                 goto out;
         }
-        num_sectors = size >> 9;        /* File size in 512-byte blocks */
+
+        if (curlun->cdrom) {
+                curlun->blksize = 2048;
+                curlun->blkbits = 11;
+        } else if (inode->i_bdev) {
+                curlun->blksize = bdev_logical_block_size(inode->i_bdev);
+                curlun->blkbits = blksize_bits(curlun->blksize);
+        } else {
+                curlun->blksize = 512;
+                curlun->blkbits = 9;
+        }
+
+        num_sectors = size >> curlun->blkbits; /* File size in logic-block-size blocks */
         min_sectors = 1;
         if (curlun->cdrom) {
-                num_sectors &= ~3;      /* Reduce to a multiple of 2048 */
-                min_sectors = 300*4;    /* Smallest track is 300 frames */
-                if (num_sectors >= 256*60*75*4) {
-                        num_sectors = (256*60*75 - 1) * 4;
+                min_sectors = 300;      /* Smallest track is 300 frames */
+                if (num_sectors >= 256*60*75) {
+                        num_sectors = 256*60*75 - 1;
                         LINFO(curlun, "file too big: %s\n", filename);
                         LINFO(curlun, "using only first %d blocks\n",
                                         (int) num_sectors);
diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c
index dfed4c1d96c0..29c854bbca44 100644
--- a/drivers/usb/gadget/u_ether.c
+++ b/drivers/usb/gadget/u_ether.c
@@ -9,15 +9,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 /* #define VERBOSE_DEBUG */
diff --git a/drivers/usb/gadget/u_ether.h b/drivers/usb/gadget/u_ether.h
index c966440ddd70..8012357e98aa 100644
--- a/drivers/usb/gadget/u_ether.h
+++ b/drivers/usb/gadget/u_ether.h
@@ -9,15 +9,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef __U_ETHER_H
diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c
index a8aa46962d81..3a4a664bab44 100644
--- a/drivers/usb/gadget/u_serial.c
+++ b/drivers/usb/gadget/u_serial.c
@@ -552,9 +552,8 @@ recycle:
         /* Push from tty to ldisc; without low_latency set this is handled by
          * a workqueue, so we won't get callbacks and can hold port_lock
          */
-        if (tty && do_push) {
+        if (tty && do_push)
                 tty_flip_buffer_push(tty);
-        }
 
 
         /* We want our data queue to become empty ASAP, keeping data
diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c
index 05ba47214361..022baeca7c94 100644
--- a/drivers/usb/gadget/udc-core.c
+++ b/drivers/usb/gadget/udc-core.c
@@ -356,7 +356,7 @@ static DEVICE_ATTR(srp, S_IWUSR, NULL, usb_udc_srp_store);
 static ssize_t usb_udc_softconn_store(struct device *dev,
                 struct device_attribute *attr, const char *buf, size_t n)
 {
-        struct usb_udc          *udc = dev_get_drvdata(dev);
+        struct usb_udc          *udc = container_of(dev, struct usb_udc, dev);
 
         if (sysfs_streq(buf, "connect")) {
                 usb_gadget_connect(udc->gadget);
@@ -375,23 +375,8 @@ static ssize_t usb_udc_speed_show(struct device *dev,
                 struct device_attribute *attr, char *buf)
 {
         struct usb_udc          *udc = container_of(dev, struct usb_udc, dev);
-        struct usb_gadget       *gadget = udc->gadget;
-
-        switch (gadget->speed) {
-        case USB_SPEED_LOW:
-                return snprintf(buf, PAGE_SIZE, "low-speed\n");
-        case USB_SPEED_FULL:
-                return snprintf(buf, PAGE_SIZE, "full-speed\n");
-        case USB_SPEED_HIGH:
-                return snprintf(buf, PAGE_SIZE, "high-speed\n");
-        case USB_SPEED_WIRELESS:
-                return snprintf(buf, PAGE_SIZE, "wireless\n");
-        case USB_SPEED_SUPER:
-                return snprintf(buf, PAGE_SIZE, "super-speed\n");
-        case USB_SPEED_UNKNOWN: /* FALLTHROUGH */
-        default:
-                return snprintf(buf, PAGE_SIZE, "UNKNOWN\n");
-        }
+        return snprintf(buf, PAGE_SIZE, "%s\n",
+                        usb_speed_string(udc->gadget->speed));
 }
 static DEVICE_ATTR(speed, S_IRUSR, usb_udc_speed_show, NULL);
 
diff --git a/drivers/usb/gadget/uvc.h b/drivers/usb/gadget/uvc.h
index 81971fbc7ea5..bc78c606c12b 100644
--- a/drivers/usb/gadget/uvc.h
+++ b/drivers/usb/gadget/uvc.h
@@ -8,7 +8,6 @@
  *      it under the terms of the GNU General Public License as published by
  *      the Free Software Foundation; either version 2 of the License, or
  *      (at your option) any later version.
- *
  */
 
 #ifndef _UVC_GADGET_H_
diff --git a/drivers/usb/gadget/uvc_queue.c b/drivers/usb/gadget/uvc_queue.c
index aa0ad34e0f1f..d776adb2da67 100644
--- a/drivers/usb/gadget/uvc_queue.c
+++ b/drivers/usb/gadget/uvc_queue.c
@@ -8,7 +8,6 @@
  *      it under the terms of the GNU General Public License as published by
  *      the Free Software Foundation; either version 2 of the License, or
  *      (at your option) any later version.
- *
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/usb/gadget/uvc_v4l2.c b/drivers/usb/gadget/uvc_v4l2.c
index cfb58384394d..f6e083b50191 100644
--- a/drivers/usb/gadget/uvc_v4l2.c
+++ b/drivers/usb/gadget/uvc_v4l2.c
@@ -8,7 +8,6 @@
  *      it under the terms of the GNU General Public License as published by
  *      the Free Software Foundation; either version 2 of the License, or
  *      (at your option) any later version.
- *
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/usb/gadget/uvc_video.c b/drivers/usb/gadget/uvc_video.c
index b08f35438d70..b0e53a8ea4f7 100644
--- a/drivers/usb/gadget/uvc_video.c
+++ b/drivers/usb/gadget/uvc_video.c
@@ -8,7 +8,6 @@
  *      it under the terms of the GNU General Public License as published by
  *      the Free Software Foundation; either version 2 of the License, or
  *      (at your option) any later version.
- *
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/usb/gadget/webcam.c b/drivers/usb/gadget/webcam.c
index df6882de50bf..668fe128f2ef 100644
--- a/drivers/usb/gadget/webcam.c
+++ b/drivers/usb/gadget/webcam.c
@@ -8,8 +8,8 @@
  *      it under the terms of the GNU General Public License as published by
  *      the Free Software Foundation; either version 2 of the License, or
  *      (at your option) any later version.
- *
  */
+
 #include <linux/kernel.h>
 #include <linux/device.h>
 #include <linux/usb/video.h>
diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c
index 00e2fd2d4791..20697cc132d1 100644
--- a/drivers/usb/gadget/zero.c
+++ b/drivers/usb/gadget/zero.c
@@ -8,15 +8,6 @@
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index ab085f12d570..060e0e2b1ae6 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -19,7 +19,7 @@ config USB_C67X00_HCD
 
 config USB_XHCI_HCD
         tristate "xHCI HCD (USB 3.0) support (EXPERIMENTAL)"
-        depends on USB && PCI && EXPERIMENTAL
+        depends on USB && USB_ARCH_HAS_XHCI && EXPERIMENTAL
         ---help---
           The eXtensible Host Controller Interface (xHCI) is standard for USB 3.0
           "SuperSpeed" host controller hardware.
@@ -515,6 +515,19 @@ config USB_R8A66597_HCD
           To compile this driver as a module, choose M here: the
           module will be called r8a66597-hcd.
 
+config USB_RENESAS_USBHS_HCD
+        tristate "Renesas USBHS HCD support"
+        depends on USB
+        depends on USB_RENESAS_USBHS
+        help
+          The Renesas USBHS is a USB 2.0 host and peripheral controller.
+
+          Enable this option if your board has this chip, and you want
+          to use it as a host controller.  If unsure, say N.
+
+          To compile this driver as a module, choose M here: the
+          module will be called renesas-usbhs.
+
 config USB_WHCI_HCD
         tristate "Wireless USB Host Controller Interface (WHCI) driver (EXPERIMENTAL)"
         depends on EXPERIMENTAL
@@ -544,11 +557,11 @@ config USB_HWA_HCD
           will be called "hwa-hc".
 
 config USB_IMX21_HCD
-       tristate "iMX21 HCD support"
-       depends on USB && ARM && MACH_MX21
+       tristate "i.MX21 HCD support"
+       depends on USB && ARM && ARCH_MXC
        help
          This driver enables support for the on-chip USB host in the
-         iMX21 processor.
+         i.MX21 processor.
 
          To compile this driver as a module, choose M here: the
          module will be called "imx21-hcd".
@@ -578,3 +591,10 @@ config USB_OCTEON_OHCI
 config USB_OCTEON2_COMMON
         bool
         default y if USB_OCTEON_EHCI || USB_OCTEON_OHCI
+
+config USB_PXA168_EHCI
+        bool "Marvell PXA168 on-chip EHCI HCD support"
+        depends on USB_EHCI_HCD && ARCH_MMP
+        help
+          Enable support for Marvell PXA168 SoC's on-chip EHCI
+          host controller
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 624a362f2fee..ed48a5d79e16 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -11,8 +11,9 @@ fhci-y += fhci-mem.o fhci-tds.o fhci-sched.o
 
 fhci-$(CONFIG_FHCI_DEBUG) += fhci-dbg.o
 
-xhci-hcd-y := xhci.o xhci-mem.o xhci-pci.o
+xhci-hcd-y := xhci.o xhci-mem.o
 xhci-hcd-y += xhci-ring.o xhci-hub.o xhci-dbg.o
+xhci-hcd-$(CONFIG_PCI)  += xhci-pci.o
 
 obj-$(CONFIG_USB_WHCI_HCD)      += whci/
 
diff --git a/drivers/usb/host/ehci-ath79.c b/drivers/usb/host/ehci-ath79.c
index 4d2e88d04dab..afb6743cf094 100644
--- a/drivers/usb/host/ehci-ath79.c
+++ b/drivers/usb/host/ehci-ath79.c
@@ -163,7 +163,7 @@ static int ehci_ath79_probe(struct platform_device *pdev)
                 goto err_release_region;
         }
 
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (ret)
                 goto err_iounmap;
 
diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c
index 42ae57409908..65719e8d24e4 100644
--- a/drivers/usb/host/ehci-au1xxx.c
+++ b/drivers/usb/host/ehci-au1xxx.c
@@ -181,7 +181,7 @@ static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
         ehci->hcs_params = readl(&ehci->caps->hcs_params);
 
         ret = usb_add_hcd(hcd, pdev->resource[1].start,
-                          IRQF_DISABLED | IRQF_SHARED);
+                          IRQF_SHARED);
         if (ret == 0) {
                 platform_set_drvdata(pdev, hcd);
                 return ret;
@@ -293,7 +293,7 @@ static int ehci_hcd_au1xxx_drv_resume(struct device *dev)
         /* here we "know" root ports should always stay powered */
         ehci_port_power(ehci, 1);
 
-        hcd->state = HC_STATE_SUSPENDED;
+        ehci->rh_state = EHCI_RH_SUSPENDED;
 
         return 0;
 }
diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c
index 40a844c1dbb4..d6d74d2e09f4 100644
--- a/drivers/usb/host/ehci-dbg.c
+++ b/drivers/usb/host/ehci-dbg.c
@@ -697,6 +697,19 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
 }
 #undef DBG_SCHED_LIMIT
 
+static const char *rh_state_string(struct ehci_hcd *ehci)
+{
+        switch (ehci->rh_state) {
+        case EHCI_RH_HALTED:
+                return "halted";
+        case EHCI_RH_SUSPENDED:
+                return "suspended";
+        case EHCI_RH_RUNNING:
+                return "running";
+        }
+        return "?";
+}
+
 static ssize_t fill_registers_buffer(struct debug_buffer *buf)
 {
         struct usb_hcd          *hcd;
@@ -730,11 +743,11 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
         temp = scnprintf (next, size,
                 "bus %s, device %s\n"
                 "%s\n"
-                "EHCI %x.%02x, hcd state %d\n",
+                "EHCI %x.%02x, rh state %s\n",
                 hcd->self.controller->bus->name,
                 dev_name(hcd->self.controller),
                 hcd->product_desc,
-                i >> 8, i & 0x0ff, hcd->state);
+                i >> 8, i & 0x0ff, rh_state_string(ehci));
         size -= temp;
         next += temp;
 
@@ -808,7 +821,7 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
         next += temp;
 
         temp = scnprintf (next, size, "uframe %04x\n",
-                        ehci_readl(ehci, &ehci->regs->frame_index));
+                        ehci_read_frame_index(ehci));
         size -= temp;
         next += temp;
 
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index 34a3140d1e5f..e90344a17631 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -134,7 +134,7 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
 
         /* Don't need to set host mode here. It will be done by tdi_reset() */
 
-        retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (retval != 0)
                 goto err4;
 
@@ -392,7 +392,7 @@ static int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
 
         dev_dbg(dev, "suspending...\n");
 
-        hcd->state = HC_STATE_SUSPENDED;
+        ehci->rh_state = EHCI_RH_SUSPENDED;
         dev->power.power_state = PMSG_SUSPEND;
 
         /* ignore non-host interrupts */
@@ -481,7 +481,7 @@ static int ehci_fsl_mpc512x_drv_resume(struct device *dev)
         ehci_writel(ehci, pdata->pm_portsc, &ehci->regs->port_status[0]);
 
         set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-        hcd->state = HC_STATE_RUNNING;
+        ehci->rh_state = EHCI_RH_RUNNING;
         dev->power.power_state = PMSG_ON;
 
         tmp = ehci_readl(ehci, &ehci->regs->command);
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index f72ae0b6ee7f..59e81615e09c 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -95,7 +95,7 @@ static const char	hcd_name [] = "ehci_hcd";
 #define EHCI_IO_JIFFIES         (HZ/10)         /* io watchdog > irq_thresh */
 #define EHCI_ASYNC_JIFFIES      (HZ/20)         /* async idle timeout */
 #define EHCI_SHRINK_JIFFIES     (DIV_ROUND_UP(HZ, 200) + 1)
-                                                /* 200-ms async qh unlink delay */
+                                                /* 5-ms async qh unlink delay */
 
 /* Initial IRQ latency:  faster than hw default */
 static int log2_irq_thresh = 0;         // 0 to 6
@@ -238,7 +238,7 @@ static int handshake_on_error_set_halt(struct ehci_hcd *ehci, void __iomem *ptr,
         error = handshake(ehci, ptr, mask, done, usec);
         if (error) {
                 ehci_halt(ehci);
-                ehci_to_hcd(ehci)->state = HC_STATE_HALT;
+                ehci->rh_state = EHCI_RH_HALTED;
                 ehci_err(ehci, "force halt; handshake %p %08x %08x -> %d\n",
                         ptr, mask, done, error);
         }
@@ -278,7 +278,7 @@ static int ehci_reset (struct ehci_hcd *ehci)
         command |= CMD_RESET;
         dbg_cmd (ehci, "reset", command);
         ehci_writel(ehci, command, &ehci->regs->command);
-        ehci_to_hcd(ehci)->state = HC_STATE_HALT;
+        ehci->rh_state = EHCI_RH_HALTED;
         ehci->next_statechange = jiffies;
         retval = handshake (ehci, &ehci->regs->command,
                             CMD_RESET, 0, 250 * 1000);
@@ -307,7 +307,7 @@ static void ehci_quiesce (struct ehci_hcd *ehci)
         u32     temp;
 
 #ifdef DEBUG
-        if (!HC_IS_RUNNING (ehci_to_hcd(ehci)->state))
+        if (ehci->rh_state != EHCI_RH_RUNNING)
                 BUG ();
 #endif
 
@@ -356,7 +356,7 @@ static void ehci_iaa_watchdog(unsigned long param)
          */
         if (ehci->reclaim
                         && !timer_pending(&ehci->iaa_watchdog)
-                        && HC_IS_RUNNING(ehci_to_hcd(ehci)->state)) {
+                        && ehci->rh_state == EHCI_RH_RUNNING) {
                 u32 cmd, status;
 
                 /* If we get here, IAA is *REALLY* late.  It's barely
@@ -496,7 +496,7 @@ static void ehci_work (struct ehci_hcd *ehci)
          * misplace IRQs, and should let us run completely without IRQs.
          * such lossage has been observed on both VT6202 and VT8235.
          */
-        if (HC_IS_RUNNING (ehci_to_hcd(ehci)->state) &&
+        if (ehci->rh_state == EHCI_RH_RUNNING &&
                         (ehci->async->qh_next.ptr != NULL ||
                          ehci->periodic_sched != 0))
                 timer_action (ehci, TIMER_IO_WATCHDOG);
@@ -516,7 +516,7 @@ static void ehci_stop (struct usb_hcd *hcd)
         del_timer_sync(&ehci->iaa_watchdog);
 
         spin_lock_irq(&ehci->lock);
-        if (HC_IS_RUNNING (hcd->state))
+        if (ehci->rh_state == EHCI_RH_RUNNING)
                 ehci_quiesce (ehci);
 
         ehci_silence_controller(ehci);
@@ -741,7 +741,7 @@ static int ehci_run (struct usb_hcd *hcd)
          * be started before the port switching actions could complete.
          */
         down_write(&ehci_cf_port_reset_rwsem);
-        hcd->state = HC_STATE_RUNNING;
+        ehci->rh_state = EHCI_RH_RUNNING;
         ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
         ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
         msleep(5);
@@ -768,6 +768,35 @@ static int ehci_run (struct usb_hcd *hcd)
         return 0;
 }
 
+static int __maybe_unused ehci_setup (struct usb_hcd *hcd)
+{
+        struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+        int retval;
+
+        ehci->regs = (void __iomem *)ehci->caps +
+            HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
+        dbg_hcs_params(ehci, "reset");
+        dbg_hcc_params(ehci, "reset");
+
+        /* cache this readonly data; minimize chip reads */
+        ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+
+        ehci->sbrn = HCD_USB2;
+
+        retval = ehci_halt(ehci);
+        if (retval)
+                return retval;
+
+        /* data structure init */
+        retval = ehci_init(hcd);
+        if (retval)
+                return retval;
+
+        ehci_reset(ehci);
+
+        return 0;
+}
+
 /*-------------------------------------------------------------------------*/
 
 static irqreturn_t ehci_irq (struct usb_hcd *hcd)
@@ -788,7 +817,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
 
         /* Shared IRQ? */
         masked_status = status & INTR_MASK;
-        if (!masked_status || unlikely(hcd->state == HC_STATE_HALT)) {
+        if (!masked_status || unlikely(ehci->rh_state == EHCI_RH_HALTED)) {
                 spin_unlock(&ehci->lock);
                 return IRQ_NONE;
         }
@@ -952,7 +981,7 @@ static int ehci_urb_enqueue (
 static void unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
 {
         /* failfast */
-        if (!HC_IS_RUNNING(ehci_to_hcd(ehci)->state) && ehci->reclaim)
+        if (ehci->rh_state != EHCI_RH_RUNNING && ehci->reclaim)
                 end_unlink_async(ehci);
 
         /* If the QH isn't linked then there's nothing we can do
@@ -1079,7 +1108,7 @@ rescan:
                 goto idle_timeout;
         }
 
-        if (!HC_IS_RUNNING (hcd->state))
+        if (ehci->rh_state != EHCI_RH_RUNNING)
                 qh->qh_state = QH_STATE_IDLE;
         switch (qh->qh_state) {
         case QH_STATE_LINKED:
@@ -1166,8 +1195,7 @@ ehci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
 static int ehci_get_frame (struct usb_hcd *hcd)
 {
         struct ehci_hcd         *ehci = hcd_to_ehci (hcd);
-        return (ehci_readl(ehci, &ehci->regs->frame_index) >> 3) %
-                ehci->periodic_size;
+        return (ehci_read_frame_index(ehci) >> 3) % ehci->periodic_size;
 }
 
 /*-------------------------------------------------------------------------*/
@@ -1291,6 +1319,16 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER         ehci_grlib_driver
 #endif
 
+#ifdef CONFIG_USB_PXA168_EHCI
+#include "ehci-pxa168.c"
+#define PLATFORM_DRIVER         ehci_pxa168_driver
+#endif
+
+#ifdef CONFIG_NLM_XLR
+#include "ehci-xls.c"
+#define PLATFORM_DRIVER         ehci_xls_driver
+#endif
+
 #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
     !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
     !defined(XILINX_OF_PLATFORM_DRIVER)
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 4c32cb19b405..77bbb2357e47 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -236,10 +236,8 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
         }
 
         /* stop schedules, clean any completed work */
-        if (HC_IS_RUNNING(hcd->state)) {
+        if (ehci->rh_state == EHCI_RH_RUNNING)
                 ehci_quiesce (ehci);
-                hcd->state = HC_STATE_QUIESCING;
-        }
         ehci->command = ehci_readl(ehci, &ehci->regs->command);
         ehci_work(ehci);
 
@@ -313,7 +311,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
 
         /* turn off now-idle HC */
         ehci_halt (ehci);
-        hcd->state = HC_STATE_SUSPENDED;
+        ehci->rh_state = EHCI_RH_SUSPENDED;
 
         if (ehci->reclaim)
                 end_unlink_async(ehci);
@@ -382,6 +380,7 @@ static int ehci_bus_resume (struct usb_hcd *hcd)
 
         /* restore CMD_RUN, framelist size, and irq threshold */
         ehci_writel(ehci, ehci->command, &ehci->regs->command);
+        ehci->rh_state = EHCI_RH_RUNNING;
 
         /* Some controller/firmware combinations need a delay during which
          * they set up the port statuses.  See Bugzilla #8190. */
@@ -451,7 +450,6 @@ static int ehci_bus_resume (struct usb_hcd *hcd)
         }
 
         ehci->next_statechange = jiffies + msecs_to_jiffies(5);
-        hcd->state = HC_STATE_RUNNING;
 
         /* Now we can safely re-enable irqs */
         ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable);
@@ -563,7 +561,7 @@ ehci_hub_status_data (struct usb_hcd *hcd, char *buf)
         u32             ppcd = 0;
 
         /* if !USB_SUSPEND, root hub timers won't get shut down ... */
-        if (!HC_IS_RUNNING(hcd->state))
+        if (ehci->rh_state != EHCI_RH_RUNNING)
                 return 0;
 
         /* init status to no-changes */
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
index 555a73c864b5..55978fcfa4b2 100644
--- a/drivers/usb/host/ehci-mxc.c
+++ b/drivers/usb/host/ehci-mxc.c
@@ -236,7 +236,7 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
         priv->hcd = hcd;
         platform_set_drvdata(pdev, priv);
 
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (ret)
                 goto err_add;
 
diff --git a/drivers/usb/host/ehci-octeon.c b/drivers/usb/host/ehci-octeon.c
index c3ba3ed5f3a6..ba1f51361134 100644
--- a/drivers/usb/host/ehci-octeon.c
+++ b/drivers/usb/host/ehci-octeon.c
@@ -155,7 +155,7 @@ static int ehci_octeon_drv_probe(struct platform_device *pdev)
         /* cache this readonly data; minimize chip reads */
         ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
 
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (ret) {
                 dev_dbg(&pdev->dev, "failed to add hcd with err %d\n", ret);
                 goto err3;
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index 45240321ca09..e39b0297bad1 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -228,7 +228,7 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
         /* cache this readonly data; minimize chip reads */
         omap_ehci->hcs_params = readl(&omap_ehci->caps->hcs_params);
 
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (ret) {
                 dev_err(dev, "failed to add hcd with err %d\n", ret);
                 goto err_add_hcd;
diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c
index 395bdb0248d5..a68a2a5c4b83 100644
--- a/drivers/usb/host/ehci-orion.c
+++ b/drivers/usb/host/ehci-orion.c
@@ -277,7 +277,7 @@ static int __devinit ehci_orion_drv_probe(struct platform_device *pdev)
                 printk(KERN_WARNING "Orion ehci -USB phy version isn't supported.\n");
         }
 
-        err = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_DISABLED);
+        err = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (err)
                 goto err4;
 
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 1102ce65a3a9..f4b627d343ac 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -224,6 +224,11 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
                         pci_dev_put(p_smbus);
                 }
                 break;
+        case PCI_VENDOR_ID_NETMOS:
+                /* MosChip frame-index-register bug */
+                ehci_info(ehci, "applying MosChip frame-index workaround\n");
+                ehci->frame_index_bug = 1;
+                break;
         }
 
         /* optional debug port, normally in the first BAR */
@@ -439,7 +444,7 @@ static int ehci_pci_resume(struct usb_hcd *hcd, bool hibernated)
         /* here we "know" root ports should always stay powered */
         ehci_port_power(ehci, 1);
 
-        hcd->state = HC_STATE_SUSPENDED;
+        ehci->rh_state = EHCI_RH_SUSPENDED;
         return 0;
 }
 #endif
diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c
index 64626a777d61..2dc32da75cfc 100644
--- a/drivers/usb/host/ehci-ps3.c
+++ b/drivers/usb/host/ehci-ps3.c
@@ -167,7 +167,7 @@ static int __devinit ps3_ehci_probe(struct ps3_system_bus_device *dev)
 
         ps3_system_bus_set_drvdata(dev, hcd);
 
-        result = usb_add_hcd(hcd, virq, IRQF_DISABLED);
+        result = usb_add_hcd(hcd, virq, 0);
 
         if (result) {
                 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
diff --git a/drivers/usb/host/ehci-pxa168.c b/drivers/usb/host/ehci-pxa168.c
new file mode 100644
index 000000000000..ac0c16e8f539
--- /dev/null
+++ b/drivers/usb/host/ehci-pxa168.c
@@ -0,0 +1,363 @@
+/*
+ * drivers/usb/host/ehci-pxa168.c
+ *
+ * Tanmay Upadhyay <tanmay.upadhyay@einfochips.com>
+ *
+ * Based on drivers/usb/host/ehci-orion.c
+ *
+ * This file is licensed under  the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <mach/pxa168.h>
+
+#define USB_PHY_CTRL_REG 0x4
+#define USB_PHY_PLL_REG  0x8
+#define USB_PHY_TX_REG   0xc
+
+#define FBDIV_SHIFT      4
+
+#define ICP_SHIFT        12
+#define ICP_15            2
+#define ICP_20            3
+#define ICP_25            4
+
+#define KVCO_SHIFT       15
+
+#define PLLCALI12_SHIFT  25
+#define CALI12_VDD        0
+#define CALI12_09         1
+#define CALI12_10         2
+#define CALI12_11         3
+
+#define PLLVDD12_SHIFT   27
+#define VDD12_VDD         0
+#define VDD12_10          1
+#define VDD12_11          2
+#define VDD12_12          3
+
+#define PLLVDD18_SHIFT   29
+#define VDD18_19          0
+#define VDD18_20          1
+#define VDD18_21          2
+#define VDD18_22          3
+
+
+#define PLL_READY        (1 << 23)
+#define VCOCAL_START     (1 << 21)
+#define REG_RCAL_START   (1 << 12)
+
+struct pxa168_usb_drv_data {
+        struct ehci_hcd ehci;
+        struct clk      *pxa168_usb_clk;
+        struct resource *usb_phy_res;
+        void __iomem    *usb_phy_reg_base;
+};
+
+static int ehci_pxa168_setup(struct usb_hcd *hcd)
+{
+        struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+        int retval;
+
+        ehci_reset(ehci);
+        retval = ehci_halt(ehci);
+        if (retval)
+                return retval;
+
+        /*
+         * data structure init
+         */
+        retval = ehci_init(hcd);
+        if (retval)
+                return retval;
+
+        hcd->has_tt = 1;
+
+        ehci_port_power(ehci, 0);
+
+        return retval;
+}
+
+static const struct hc_driver ehci_pxa168_hc_driver = {
+        .description = hcd_name,
+        .product_desc = "Marvell PXA168 EHCI",
+        .hcd_priv_size = sizeof(struct pxa168_usb_drv_data),
+
+        /*
+         * generic hardware linkage
+         */
+        .irq = ehci_irq,
+        .flags = HCD_MEMORY | HCD_USB2,
+
+        /*
+         * basic lifecycle operations
+         */
+        .reset = ehci_pxa168_setup,
+        .start = ehci_run,
+        .stop = ehci_stop,
+        .shutdown = ehci_shutdown,
+
+        /*
+         * managing i/o requests and associated device resources
+         */
+        .urb_enqueue = ehci_urb_enqueue,
+        .urb_dequeue = ehci_urb_dequeue,
+        .endpoint_disable = ehci_endpoint_disable,
+        .endpoint_reset = ehci_endpoint_reset,
+
+        /*
+         * scheduling support
+         */
+        .get_frame_number = ehci_get_frame,
+
+        /*
+         * root hub support
+         */
+        .hub_status_data = ehci_hub_status_data,
+        .hub_control = ehci_hub_control,
+        .bus_suspend = ehci_bus_suspend,
+        .bus_resume = ehci_bus_resume,
+        .relinquish_port = ehci_relinquish_port,
+        .port_handed_over = ehci_port_handed_over,
+
+        .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+};
+
+static int pxa168_usb_phy_init(struct platform_device *pdev)
+{
+        struct resource *res;
+        void __iomem *usb_phy_reg_base;
+        struct pxa168_usb_pdata *pdata;
+        struct pxa168_usb_drv_data *drv_data;
+        struct usb_hcd *hcd = platform_get_drvdata(pdev);
+        unsigned long reg_val;
+        int pll_retry_cont = 10000, err = 0;
+
+        drv_data = (struct pxa168_usb_drv_data *)hcd->hcd_priv;
+        pdata = (struct pxa168_usb_pdata *)pdev->dev.platform_data;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+        if (!res) {
+                dev_err(&pdev->dev,
+                        "Found HC with no PHY register addr. Check %s setup!\n",
+                        dev_name(&pdev->dev));
+                return -ENODEV;
+        }
+
+        if (!request_mem_region(res->start, resource_size(res),
+                                ehci_pxa168_hc_driver.description)) {
+                dev_dbg(&pdev->dev, "controller already in use\n");
+                return -EBUSY;
+        }
+
+        usb_phy_reg_base = ioremap(res->start, resource_size(res));
+        if (usb_phy_reg_base == NULL) {
+                dev_dbg(&pdev->dev, "error mapping memory\n");
+                err = -EFAULT;
+                goto err1;
+        }
+        drv_data->usb_phy_reg_base = usb_phy_reg_base;
+        drv_data->usb_phy_res = res;
+
+        /* If someone wants to init USB phy in board specific way */
+        if (pdata && pdata->phy_init)
+                return pdata->phy_init(usb_phy_reg_base);
+
+        /* Power up the PHY and PLL */
+        writel(readl(usb_phy_reg_base + USB_PHY_CTRL_REG) | 0x3,
+                usb_phy_reg_base + USB_PHY_CTRL_REG);
+
+        /* Configure PHY PLL */
+        reg_val = readl(usb_phy_reg_base + USB_PHY_PLL_REG) & ~(0x7e03ffff);
+        reg_val |= (VDD18_22 << PLLVDD18_SHIFT | VDD12_12 << PLLVDD12_SHIFT |
+                CALI12_11 << PLLCALI12_SHIFT | 3 << KVCO_SHIFT |
+                ICP_15 << ICP_SHIFT | 0xee << FBDIV_SHIFT | 0xb);
+        writel(reg_val, usb_phy_reg_base + USB_PHY_PLL_REG);
+
+        /* Make sure PHY PLL is ready */
+        while (!(readl(usb_phy_reg_base + USB_PHY_PLL_REG) & PLL_READY)) {
+                if (!(pll_retry_cont--)) {
+                        dev_dbg(&pdev->dev, "USB PHY PLL not ready\n");
+                        err = -EIO;
+                        goto err2;
+                }
+        }
+
+        /* Toggle VCOCAL_START bit of U2PLL for PLL calibration */
+        udelay(200);
+        writel(readl(usb_phy_reg_base + USB_PHY_PLL_REG) | VCOCAL_START,
+                usb_phy_reg_base + USB_PHY_PLL_REG);
+        udelay(40);
+        writel(readl(usb_phy_reg_base + USB_PHY_PLL_REG) & ~VCOCAL_START,
+                usb_phy_reg_base + USB_PHY_PLL_REG);
+
+        /* Toggle REG_RCAL_START bit of U2PTX for impedance calibration */
+        udelay(400);
+        writel(readl(usb_phy_reg_base + USB_PHY_TX_REG) | REG_RCAL_START,
+                usb_phy_reg_base + USB_PHY_TX_REG);
+        udelay(40);
+        writel(readl(usb_phy_reg_base + USB_PHY_TX_REG) & ~REG_RCAL_START,
+                usb_phy_reg_base + USB_PHY_TX_REG);
+
+        /* Make sure PHY PLL is ready again */
+        pll_retry_cont = 0;
+        while (!(readl(usb_phy_reg_base + USB_PHY_PLL_REG) & PLL_READY)) {
+                if (!(pll_retry_cont--)) {
+                        dev_dbg(&pdev->dev, "USB PHY PLL not ready\n");
+                        err = -EIO;
+                        goto err2;
+                }
+        }
+
+        return 0;
+err2:
+        iounmap(usb_phy_reg_base);
+err1:
+        release_mem_region(res->start, resource_size(res));
+        return err;
+}
+
+static int __devinit ehci_pxa168_drv_probe(struct platform_device *pdev)
+{
+        struct resource *res;
+        struct usb_hcd *hcd;
+        struct ehci_hcd *ehci;
+        struct pxa168_usb_drv_data *drv_data;
+        void __iomem *regs;
+        int irq, err = 0;
+
+        if (usb_disabled())
+                return -ENODEV;
+
+        pr_debug("Initializing pxa168-SoC USB Host Controller\n");
+
+        irq = platform_get_irq(pdev, 0);
+        if (irq <= 0) {
+                dev_err(&pdev->dev,
+                        "Found HC with no IRQ. Check %s setup!\n",
+                        dev_name(&pdev->dev));
+                err = -ENODEV;
+                goto err1;
+        }
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
+                dev_err(&pdev->dev,
+                        "Found HC with no register addr. Check %s setup!\n",
+                        dev_name(&pdev->dev));
+                err = -ENODEV;
+                goto err1;
+        }
+
+        if (!request_mem_region(res->start, resource_size(res),
+                                ehci_pxa168_hc_driver.description)) {
+                dev_dbg(&pdev->dev, "controller already in use\n");
+                err = -EBUSY;
+                goto err1;
+        }
+
+        regs = ioremap(res->start, resource_size(res));
+        if (regs == NULL) {
+                dev_dbg(&pdev->dev, "error mapping memory\n");
+                err = -EFAULT;
+                goto err2;
+        }
+
+        hcd = usb_create_hcd(&ehci_pxa168_hc_driver,
+                        &pdev->dev, dev_name(&pdev->dev));
+        if (!hcd) {
+                err = -ENOMEM;
+                goto err3;
+        }
+
+        drv_data = (struct pxa168_usb_drv_data *)hcd->hcd_priv;
+
+        /* Enable USB clock */
+        drv_data->pxa168_usb_clk = clk_get(&pdev->dev, "PXA168-USBCLK");
+        if (IS_ERR(drv_data->pxa168_usb_clk)) {
+                dev_err(&pdev->dev, "Couldn't get USB clock\n");
+                err = PTR_ERR(drv_data->pxa168_usb_clk);
+                goto err4;
+        }
+        clk_enable(drv_data->pxa168_usb_clk);
+
+        err = pxa168_usb_phy_init(pdev);
+        if (err) {
+                dev_err(&pdev->dev, "USB PHY initialization failed\n");
+                goto err5;
+        }
+
+        hcd->rsrc_start = res->start;
+        hcd->rsrc_len = resource_size(res);
+        hcd->regs = regs;
+
+        ehci = hcd_to_ehci(hcd);
+        ehci->caps = hcd->regs + 0x100;
+        ehci->regs = hcd->regs + 0x100 +
+                HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+        ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+        hcd->has_tt = 1;
+        ehci->sbrn = 0x20;
+
+        err = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_DISABLED);
+        if (err)
+                goto err5;
+
+        return 0;
+
+err5:
+        clk_disable(drv_data->pxa168_usb_clk);
+        clk_put(drv_data->pxa168_usb_clk);
+err4:
+        usb_put_hcd(hcd);
+err3:
+        iounmap(regs);
+err2:
+        release_mem_region(res->start, resource_size(res));
+err1:
+        dev_err(&pdev->dev, "init %s fail, %d\n",
+                dev_name(&pdev->dev), err);
+
+        return err;
+}
+
+static int __exit ehci_pxa168_drv_remove(struct platform_device *pdev)
+{
+        struct usb_hcd *hcd = platform_get_drvdata(pdev);
+        struct pxa168_usb_drv_data *drv_data =
+                (struct pxa168_usb_drv_data *)hcd->hcd_priv;
+
+        usb_remove_hcd(hcd);
+
+        /* Power down PHY & PLL */
+        writel(readl(drv_data->usb_phy_reg_base + USB_PHY_CTRL_REG) & (~0x3),
+                drv_data->usb_phy_reg_base + USB_PHY_CTRL_REG);
+
+        clk_disable(drv_data->pxa168_usb_clk);
+        clk_put(drv_data->pxa168_usb_clk);
+
+        iounmap(hcd->regs);
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+
+        iounmap(drv_data->usb_phy_reg_base);
+        release_mem_region(drv_data->usb_phy_res->start,
+                        resource_size(drv_data->usb_phy_res));
+
+        usb_put_hcd(hcd);
+
+        return 0;
+}
+
+MODULE_ALIAS("platform:pxa168-ehci");
+
+static struct platform_driver ehci_pxa168_driver = {
+        .probe          = ehci_pxa168_drv_probe,
+        .remove         = __exit_p(ehci_pxa168_drv_remove),
+        .shutdown       = usb_hcd_platform_shutdown,
+        .driver.name    = "pxa168-ehci",
+};
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index 0917e3a32465..4e4066c35a09 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -111,8 +111,6 @@ qh_update (struct ehci_hcd *ehci, struct ehci_qh *qh, struct ehci_qtd *qtd)
                 }
         }
 
-        /* HC must see latest qtd and qh data before we clear ACTIVE+HALT */
-        wmb ();
         hw->hw_token &= cpu_to_hc32(ehci, QTD_TOGGLE | QTD_STS_PING);
 }
 
@@ -153,7 +151,7 @@ static void ehci_clear_tt_buffer_complete(struct usb_hcd *hcd,
         spin_lock_irqsave(&ehci->lock, flags);
         qh->clearing_tt = 0;
         if (qh->qh_state == QH_STATE_IDLE && !list_empty(&qh->qtd_list)
-                        && HC_IS_RUNNING(hcd->state))
+                        && ehci->rh_state == EHCI_RH_RUNNING)
                 qh_link_async(ehci, qh);
         spin_unlock_irqrestore(&ehci->lock, flags);
 }
@@ -425,7 +423,7 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh)
 
                 /* stop scanning when we reach qtds the hc is using */
                 } else if (likely (!stopped
-                                && HC_IS_RUNNING (ehci_to_hcd(ehci)->state))) {
+                                && ehci->rh_state == EHCI_RH_RUNNING)) {
                         break;
 
                 /* scan the whole queue for unlinks whenever it stops */
@@ -433,7 +431,7 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh)
                         stopped = 1;
 
                         /* cancel everything if we halt, suspend, etc */
-                        if (!HC_IS_RUNNING(ehci_to_hcd(ehci)->state))
+                        if (ehci->rh_state != EHCI_RH_RUNNING)
                                 last_status = -ESHUTDOWN;
 
                         /* this qtd is active; skip it unless a previous qtd
@@ -724,7 +722,8 @@ qh_urb_transaction (
 
         /*
          * control requests may need a terminating data "status" ack;
-         * bulk ones may need a terminating short packet (zero length).
+         * other OUT ones may need a terminating short packet
+         * (zero length).
          */
         if (likely (urb->transfer_buffer_length != 0)) {
                 int     one_more = 0;
@@ -733,7 +732,7 @@ qh_urb_transaction (
                         one_more = 1;
                         token ^= 0x0100;        /* "in" <--> "out"  */
                         token |= QTD_TOGGLE;    /* force DATA1 */
-                } else if (usb_pipebulk (urb->pipe)
+                } else if (usb_pipeout(urb->pipe)
                                 && (urb->transfer_flags & URB_ZERO_PACKET)
                                 && !(urb->transfer_buffer_length % maxpacket)) {
                         one_more = 1;
@@ -977,9 +976,8 @@ static void qh_link_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
                         /* in case a clear of CMD_ASE didn't take yet */
                         (void)handshake(ehci, &ehci->regs->status,
                                         STS_ASS, 0, 150);
-                        cmd |= CMD_ASE | CMD_RUN;
+                        cmd |= CMD_ASE;
                         ehci_writel(ehci, cmd, &ehci->regs->command);
-                        ehci_to_hcd(ehci)->state = HC_STATE_RUNNING;
                         /* posted write need not be known to HC yet ... */
                 }
         }
@@ -1058,7 +1056,7 @@ static struct ehci_qh *qh_append_tds (
                          */
                         token = qtd->hw_token;
                         qtd->hw_token = HALT_BIT(ehci);
-                        wmb ();
+
                         dummy = qh->dummy;
 
                         dma = dummy->qtd_dma;
@@ -1168,14 +1166,13 @@ static void end_unlink_async (struct ehci_hcd *ehci)
 
         qh_completions (ehci, qh);
 
-        if (!list_empty (&qh->qtd_list)
-                        && HC_IS_RUNNING (ehci_to_hcd(ehci)->state))
+        if (!list_empty(&qh->qtd_list) && ehci->rh_state == EHCI_RH_RUNNING) {
                 qh_link_async (ehci, qh);
-        else {
+        } else {
                 /* it's not free to turn the async schedule on/off; leave it
                  * active but idle for a while once it empties.
                  */
-                if (HC_IS_RUNNING (ehci_to_hcd(ehci)->state)
+                if (ehci->rh_state == EHCI_RH_RUNNING
                                 && ehci->async->qh_next.qh == NULL)
                         timer_action (ehci, TIMER_ASYNC_OFF);
         }
@@ -1211,7 +1208,7 @@ static void start_unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
         /* stop async schedule right now? */
         if (unlikely (qh == ehci->async)) {
                 /* can't get here without STS_ASS set */
-                if (ehci_to_hcd(ehci)->state != HC_STATE_HALT
+                if (ehci->rh_state != EHCI_RH_HALTED
                                 && !ehci->reclaim) {
                         /* ... and CMD_IAAD clear */
                         ehci_writel(ehci, cmd & ~CMD_ASE,
@@ -1237,7 +1234,7 @@ static void start_unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
         wmb ();
 
         /* If the controller isn't running, we don't have to wait for it */
-        if (unlikely(!HC_IS_RUNNING(ehci_to_hcd(ehci)->state))) {
+        if (unlikely(ehci->rh_state != EHCI_RH_RUNNING)) {
                 /* if (unlikely (qh->reclaim != 0))
                  *      this will recurse, probably not much
                  */
@@ -1260,7 +1257,7 @@ static void scan_async (struct ehci_hcd *ehci)
         enum ehci_timer_action  action = TIMER_IO_WATCHDOG;
 
         timer_action_done (ehci, TIMER_ASYNC_SHRINK);
-        stopped = !HC_IS_RUNNING(ehci_to_hcd(ehci)->state);
+        stopped = (ehci->rh_state != EHCI_RH_RUNNING);
 
         ehci->qh_scan_next = ehci->async->qh_next.qh;
         while (ehci->qh_scan_next) {
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
index 9e77f1c8bdbd..024b65c4990d 100644
--- a/drivers/usb/host/ehci-s5p.c
+++ b/drivers/usb/host/ehci-s5p.c
@@ -136,7 +136,7 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev)
         /* cache this readonly data; minimize chip reads */
         ehci->hcs_params = readl(&ehci->caps->hcs_params);
 
-        err = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        err = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (err) {
                 dev_err(&pdev->dev, "Failed to add USB HCD\n");
                 goto fail;
@@ -270,7 +270,7 @@ static int s5p_ehci_resume(struct device *dev)
         /* here we "know" root ports should always stay powered */
         ehci_port_power(ehci, 1);
 
-        hcd->state = HC_STATE_SUSPENDED;
+        ehci->rh_state = EHCI_RH_SUSPENDED;
 
         return 0;
 }
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index 2abf8543f083..2e829fae6482 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -36,6 +36,27 @@
 
 static int ehci_get_frame (struct usb_hcd *hcd);
 
+#ifdef CONFIG_PCI
+
+static unsigned ehci_read_frame_index(struct ehci_hcd *ehci)
+{
+        unsigned uf;
+
+        /*
+         * The MosChip MCS9990 controller updates its microframe counter
+         * a little before the frame counter, and occasionally we will read
+         * the invalid intermediate value.  Avoid problems by checking the
+         * microframe number (the low-order 3 bits); if they are 0 then
+         * re-read the register to get the correct value.
+         */
+        uf = ehci_readl(ehci, &ehci->regs->frame_index);
+        if (unlikely(ehci->frame_index_bug && ((uf & 7) == 0)))
+                uf = ehci_readl(ehci, &ehci->regs->frame_index);
+        return uf;
+}
+
+#endif
+
 /*-------------------------------------------------------------------------*/
 
 /*
@@ -479,10 +500,9 @@ static int enable_periodic (struct ehci_hcd *ehci)
         cmd = ehci_readl(ehci, &ehci->regs->command) | CMD_PSE;
         ehci_writel(ehci, cmd, &ehci->regs->command);
         /* posted write ... PSS happens later */
-        ehci_to_hcd(ehci)->state = HC_STATE_RUNNING;
 
         /* make sure ehci_work scans these */
-        ehci->next_uframe = ehci_readl(ehci, &ehci->regs->frame_index)
+        ehci->next_uframe = ehci_read_frame_index(ehci)
                 % (ehci->periodic_size << 3);
         if (unlikely(ehci->broken_periodic))
                 ehci->last_periodic_enable = ktime_get_real();
@@ -677,7 +697,7 @@ static void intr_deschedule (struct ehci_hcd *ehci, struct ehci_qh *qh)
 
         /* reschedule QH iff another request is queued */
         if (!list_empty(&qh->qtd_list) &&
-                        HC_IS_RUNNING(ehci_to_hcd(ehci)->state)) {
+                        ehci->rh_state == EHCI_RH_RUNNING) {
                 rc = qh_schedule(ehci, qh);
 
                 /* An error here likely indicates handshake failure
@@ -1409,7 +1429,7 @@ iso_stream_schedule (
                 goto fail;
         }
 
-        now = ehci_readl(ehci, &ehci->regs->frame_index) & (mod - 1);
+        now = ehci_read_frame_index(ehci) & (mod - 1);
 
         /* Typical case: reuse current schedule, stream is still active.
          * Hopefully there are no gaps from the host falling behind
@@ -2275,8 +2295,8 @@ scan_periodic (struct ehci_hcd *ehci)
          * Touches as few pages as possible:  cache-friendly.
          */
         now_uframe = ehci->next_uframe;
-        if (HC_IS_RUNNING(ehci_to_hcd(ehci)->state)) {
-                clock = ehci_readl(ehci, &ehci->regs->frame_index);
+        if (ehci->rh_state == EHCI_RH_RUNNING) {
+                clock = ehci_read_frame_index(ehci);
                 clock_frame = (clock >> 3) & (ehci->periodic_size - 1);
         } else  {
                 clock = now_uframe + mod - 1;
@@ -2310,7 +2330,7 @@ restart:
                         union ehci_shadow       temp;
                         int                     live;
 
-                        live = HC_IS_RUNNING (ehci_to_hcd(ehci)->state);
+                        live = (ehci->rh_state == EHCI_RH_RUNNING);
                         switch (hc32_to_cpu(ehci, type)) {
                         case Q_TYPE_QH:
                                 /* handle any completions */
@@ -2435,7 +2455,7 @@ restart:
                  * We can't advance our scan without collecting the ISO
                  * transfers that are still pending in this frame.
                  */
-                if (incomplete && HC_IS_RUNNING(ehci_to_hcd(ehci)->state)) {
+                if (incomplete && ehci->rh_state == EHCI_RH_RUNNING) {
                         ehci->next_uframe = now_uframe;
                         break;
                 }
@@ -2451,12 +2471,11 @@ restart:
                 if (now_uframe == clock) {
                         unsigned        now;
 
-                        if (!HC_IS_RUNNING (ehci_to_hcd(ehci)->state)
+                        if (ehci->rh_state != EHCI_RH_RUNNING
                                         || ehci->periodic_sched == 0)
                                 break;
                         ehci->next_uframe = now_uframe;
-                        now = ehci_readl(ehci, &ehci->regs->frame_index) &
-                                        (mod - 1);
+                        now = ehci_read_frame_index(ehci) & (mod - 1);
                         if (now_uframe == now)
                                 break;
 
diff --git a/drivers/usb/host/ehci-sh.c b/drivers/usb/host/ehci-sh.c
index 86a95bb80a61..9d9cf47d80da 100644
--- a/drivers/usb/host/ehci-sh.c
+++ b/drivers/usb/host/ehci-sh.c
@@ -168,7 +168,7 @@ static int ehci_hcd_sh_probe(struct platform_device *pdev)
         clk_enable(priv->fclk);
         clk_enable(priv->iclk);
 
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (ret != 0) {
                 dev_err(&pdev->dev, "Failed to add hcd");
                 goto fail_add_hcd;
diff --git a/drivers/usb/host/ehci-spear.c b/drivers/usb/host/ehci-spear.c
index dbf1e4ef3c17..b115b0b76e33 100644
--- a/drivers/usb/host/ehci-spear.c
+++ b/drivers/usb/host/ehci-spear.c
@@ -154,7 +154,7 @@ static int spear_ehci_hcd_drv_probe(struct platform_device *pdev)
         ehci->clk = usbh_clk;
 
         spear_start_ehci(ehci);
-        retval = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_DISABLED);
+        retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (retval)
                 goto fail_add_hcd;
 
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 02b2bfd49a10..db9d1b4bfbdc 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -674,7 +674,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
         }
 #endif
 
-        err = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        err = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (err) {
                 dev_err(&pdev->dev, "Failed to add USB HCD\n");
                 goto fail;
diff --git a/drivers/usb/host/ehci-vt8500.c b/drivers/usb/host/ehci-vt8500.c
index 47d749631bc7..54d1ab8aec49 100644
--- a/drivers/usb/host/ehci-vt8500.c
+++ b/drivers/usb/host/ehci-vt8500.c
@@ -133,7 +133,7 @@ static int vt8500_ehci_drv_probe(struct platform_device *pdev)
         ehci_port_power(ehci, 1);
 
         ret = usb_add_hcd(hcd, pdev->resource[1].start,
-                          IRQF_DISABLED | IRQF_SHARED);
+                          IRQF_SHARED);
         if (ret == 0) {
                 platform_set_drvdata(pdev, hcd);
                 return ret;
diff --git a/drivers/usb/host/ehci-xls.c b/drivers/usb/host/ehci-xls.c
new file mode 100644
index 000000000000..fe74bd676018
--- /dev/null
+++ b/drivers/usb/host/ehci-xls.c
@@ -0,0 +1,161 @@
+/*
+ * EHCI HCD for Netlogic XLS processors.
+ *
+ * (C) Copyright 2011 Netlogic Microsystems Inc.
+ *
+ *  Based on various ehci-*.c drivers
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/platform_device.h>
+
+static int ehci_xls_setup(struct usb_hcd *hcd)
+{
+        int     retval;
+        struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+        ehci->caps = hcd->regs;
+        ehci->regs = hcd->regs +
+                HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+        dbg_hcs_params(ehci, "reset");
+        dbg_hcc_params(ehci, "reset");
+
+        /* cache this readonly data; minimize chip reads */
+        ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+
+        retval = ehci_halt(ehci);
+        if (retval)
+                return retval;
+
+        /* data structure init */
+        retval = ehci_init(hcd);
+        if (retval)
+                return retval;
+
+        ehci_reset(ehci);
+
+        return retval;
+}
+
+int ehci_xls_probe_internal(const struct hc_driver *driver,
+        struct platform_device *pdev)
+{
+        struct usb_hcd  *hcd;
+        struct resource *res;
+        int retval, irq;
+
+        /* Get our IRQ from an earlier registered Platform Resource */
+        irq = platform_get_irq(pdev, 0);
+        if (irq < 0) {
+                dev_err(&pdev->dev, "Found HC with no IRQ. Check %s setup!\n",
+                                dev_name(&pdev->dev));
+                return -ENODEV;
+        }
+
+        /* Get our Memory Handle */
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
+                dev_err(&pdev->dev, "Error: MMIO Handle %s setup!\n",
+                                dev_name(&pdev->dev));
+                return -ENODEV;
+        }
+        hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
+        if (!hcd) {
+                retval = -ENOMEM;
+                goto err1;
+        }
+
+        hcd->rsrc_start = res->start;
+        hcd->rsrc_len = res->end - res->start + 1;
+
+        if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
+                                driver->description)) {
+                dev_dbg(&pdev->dev, "controller already in use\n");
+                retval = -EBUSY;
+                goto err2;
+        }
+        hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
+
+        if (hcd->regs == NULL) {
+                dev_dbg(&pdev->dev, "error mapping memory\n");
+                retval = -EFAULT;
+                goto err3;
+        }
+
+        retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
+        if (retval != 0)
+                goto err4;
+        return retval;
+
+err4:
+        iounmap(hcd->regs);
+err3:
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err2:
+        usb_put_hcd(hcd);
+err1:
+        dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev),
+                        retval);
+        return retval;
+}
+
+static struct hc_driver ehci_xls_hc_driver = {
+        .description    = hcd_name,
+        .product_desc   = "XLS EHCI Host Controller",
+        .hcd_priv_size  = sizeof(struct ehci_hcd),
+        .irq            = ehci_irq,
+        .flags          = HCD_USB2 | HCD_MEMORY,
+        .reset          = ehci_xls_setup,
+        .start          = ehci_run,
+        .stop           = ehci_stop,
+        .shutdown       = ehci_shutdown,
+
+        .urb_enqueue    = ehci_urb_enqueue,
+        .urb_dequeue    = ehci_urb_dequeue,
+        .endpoint_disable = ehci_endpoint_disable,
+        .endpoint_reset = ehci_endpoint_reset,
+
+        .get_frame_number = ehci_get_frame,
+
+        .hub_status_data = ehci_hub_status_data,
+        .hub_control    = ehci_hub_control,
+        .bus_suspend    = ehci_bus_suspend,
+        .bus_resume     = ehci_bus_resume,
+        .relinquish_port = ehci_relinquish_port,
+        .port_handed_over = ehci_port_handed_over,
+
+        .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+};
+
+static int ehci_xls_probe(struct platform_device *pdev)
+{
+        if (usb_disabled())
+                return -ENODEV;
+
+        return ehci_xls_probe_internal(&ehci_xls_hc_driver, pdev);
+}
+
+static int ehci_xls_remove(struct platform_device *pdev)
+{
+        struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+        usb_remove_hcd(hcd);
+        iounmap(hcd->regs);
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+        usb_put_hcd(hcd);
+        return 0;
+}
+
+MODULE_ALIAS("ehci-xls");
+
+static struct platform_driver ehci_xls_driver = {
+        .probe          = ehci_xls_probe,
+        .remove         = ehci_xls_remove,
+        .shutdown       = usb_hcd_platform_shutdown,
+        .driver         = {
+                .name = "ehci-xls",
+        },
+};
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index cc7d337ec355..0a5fda73b3f2 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -62,6 +62,12 @@ struct ehci_stats {
 
 #define EHCI_MAX_ROOT_PORTS     15              /* see HCS_N_PORTS */
 
+enum ehci_rh_state {
+        EHCI_RH_HALTED,
+        EHCI_RH_SUSPENDED,
+        EHCI_RH_RUNNING
+};
+
 struct ehci_hcd {                       /* one per controller */
         /* glue to PCI and HCD framework */
         struct ehci_caps __iomem *caps;
@@ -70,6 +76,7 @@ struct ehci_hcd {			/* one per controller */
 
         __u32                   hcs_params;     /* cached register copy */
         spinlock_t              lock;
+        enum ehci_rh_state      rh_state;
 
         /* async schedule support */
         struct ehci_qh          *async;
@@ -139,6 +146,7 @@ struct ehci_hcd {			/* one per controller */
         unsigned                fs_i_thresh:1;  /* Intel iso scheduling */
         unsigned                use_dummy_qh:1; /* AMD Frame List table quirk*/
         unsigned                has_synopsys_hc_bug:1; /* Synopsys HC */
+        unsigned                frame_index_bug:1; /* MosChip (AKA NetMos) */
 
         /* required for usb32 quirk */
         #define OHCI_CTRL_HCFS          (3 << 6)
@@ -740,6 +748,22 @@ static inline u32 hc32_to_cpup (const struct ehci_hcd *ehci, const __hc32 *x)
 
 /*-------------------------------------------------------------------------*/
 
+#ifdef CONFIG_PCI
+
+/* For working around the MosChip frame-index-register bug */
+static unsigned ehci_read_frame_index(struct ehci_hcd *ehci);
+
+#else
+
+static inline unsigned ehci_read_frame_index(struct ehci_hcd *ehci)
+{
+        return ehci_readl(ehci, &ehci->regs->frame_index);
+}
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+
 #ifndef DEBUG
 #define STUB_DEBUG_FILES
 #endif  /* DEBUG */
diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
index 572ea53b0226..4ed6d19f2a54 100644
--- a/drivers/usb/host/fhci-hcd.c
+++ b/drivers/usb/host/fhci-hcd.c
@@ -621,12 +621,15 @@ static int __devinit of_fhci_probe(struct platform_device *ofdev)
                 goto err_pram;
         }
 
-        pram_addr = cpm_muram_alloc_fixed(iprop[2], FHCI_PRAM_SIZE);
+        pram_addr = cpm_muram_alloc(FHCI_PRAM_SIZE, 64);
         if (IS_ERR_VALUE(pram_addr)) {
                 dev_err(dev, "failed to allocate usb pram\n");
                 ret = -ENOMEM;
                 goto err_pram;
         }
+
+        qe_issue_cmd(QE_ASSIGN_PAGE_TO_DEVICE, QE_CR_SUBBLOCK_USB,
+                     QE_CR_PROTOCOL_UNSPECIFIED, pram_addr);
         fhci->pram = cpm_muram_addr(pram_addr);
 
         /* GPIOs and pins */
@@ -686,7 +689,7 @@ static int __devinit of_fhci_probe(struct platform_device *ofdev)
         }
 
         ret = request_irq(fhci->timer->irq, fhci_frame_limit_timer_irq,
-                          IRQF_DISABLED, "qe timer (usb)", hcd);
+                          0, "qe timer (usb)", hcd);
         if (ret) {
                 dev_err(dev, "failed to request timer irq");
                 goto err_timer_irq;
@@ -745,7 +748,7 @@ static int __devinit of_fhci_probe(struct platform_device *ofdev)
         out_be16(&fhci->regs->usb_event, 0xffff);
         out_be16(&fhci->regs->usb_mask, 0);
 
-        ret = usb_add_hcd(hcd, usb_irq, IRQF_DISABLED);
+        ret = usb_add_hcd(hcd, usb_irq, 0);
         if (ret < 0)
                 goto err_add_hcd;
 
diff --git a/drivers/usb/host/fhci-sched.c b/drivers/usb/host/fhci-sched.c
index a42ef380e917..2df851b4bc7c 100644
--- a/drivers/usb/host/fhci-sched.c
+++ b/drivers/usb/host/fhci-sched.c
@@ -1,7 +1,7 @@
 /*
  * Freescale QUICC Engine USB Host Controller Driver
  *
- * Copyright (c) Freescale Semicondutor, Inc. 2006.
+ * Copyright (c) Freescale Semicondutor, Inc. 2006, 2011.
  *               Shlomi Gridish <gridish@freescale.com>
  *               Jerry Huang <Chang-Ming.Huang@freescale.com>
  * Copyright (c) Logic Product Development, Inc. 2007
@@ -810,9 +810,11 @@ void fhci_queue_urb(struct fhci_hcd *fhci, struct urb *urb)
                 ed->dev_addr = usb_pipedevice(urb->pipe);
                 ed->max_pkt_size = usb_maxpacket(urb->dev, urb->pipe,
                         usb_pipeout(urb->pipe));
+                /* setup stage */
                 td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt++, FHCI_TA_SETUP,
                         USB_TD_TOGGLE_DATA0, urb->setup_packet, 8, 0, 0, true);
 
+                /* data stage */
                 if (data_len > 0) {
                         td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt++,
                                 usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
@@ -820,9 +822,18 @@ void fhci_queue_urb(struct fhci_hcd *fhci, struct urb *urb)
                                 USB_TD_TOGGLE_DATA1, data, data_len, 0, 0,
                                 true);
                 }
-                td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt++,
-                        usb_pipeout(urb->pipe) ? FHCI_TA_IN : FHCI_TA_OUT,
-                        USB_TD_TOGGLE_DATA1, data, 0, 0, 0, true);
+
+                /* status stage */
+                if (data_len > 0)
+                        td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt++,
+                                (usb_pipeout(urb->pipe) ? FHCI_TA_IN :
+                                                          FHCI_TA_OUT),
+                                USB_TD_TOGGLE_DATA1, data, 0, 0, 0, true);
+                else
+                         td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt++,
+                                FHCI_TA_IN,
+                                USB_TD_TOGGLE_DATA1, data, 0, 0, 0, true);
+
                 urb_state = US_CTRL_SETUP;
                 break;
         case FHCI_TF_ISO:
diff --git a/drivers/usb/host/imx21-hcd.c b/drivers/usb/host/imx21-hcd.c
index af05718bdc73..2ee18cfa1efe 100644
--- a/drivers/usb/host/imx21-hcd.c
+++ b/drivers/usb/host/imx21-hcd.c
@@ -1891,7 +1891,7 @@ static int imx21_probe(struct platform_device *pdev)
         dev_info(imx21->dev, "Hardware HC revision: 0x%02X\n",
                 (readl(imx21->regs + USBOTG_HWMODE) >> 16) & 0xFF);
 
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+        ret = usb_add_hcd(hcd, irq, 0);
         if (ret != 0) {
                 dev_err(imx21->dev, "usb_add_hcd() returned %d\n", ret);
                 goto failed_add_hcd;
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index baae4ccd16ac..d91e5f211a76 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -1639,7 +1639,7 @@ static int __devinit isp116x_probe(struct platform_device *pdev)
                 goto err6;
         }
 
-        ret = usb_add_hcd(hcd, irq, irqflags | IRQF_DISABLED);
+        ret = usb_add_hcd(hcd, irq, irqflags);
         if (ret)
                 goto err6;
 
diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c
index 9c37dad3e816..e5fd8aa57af1 100644
--- a/drivers/usb/host/isp1362-hcd.c
+++ b/drivers/usb/host/isp1362-hcd.c
@@ -2358,7 +2358,7 @@ static int isp1362_hc_reset(struct usb_hcd *hcd)
         unsigned long flags;
         int clkrdy = 0;
 
-        pr_info("%s:\n", __func__);
+        pr_debug("%s:\n", __func__);
 
         if (isp1362_hcd->board && isp1362_hcd->board->reset) {
                 isp1362_hcd->board->reset(hcd->self.controller, 1);
@@ -2395,7 +2395,7 @@ static void isp1362_hc_stop(struct usb_hcd *hcd)
         unsigned long flags;
         u32 tmp;
 
-        pr_info("%s:\n", __func__);
+        pr_debug("%s:\n", __func__);
 
         del_timer_sync(&hcd->rh_timer);
 
@@ -2523,7 +2523,7 @@ static int isp1362_hc_start(struct usb_hcd *hcd)
         u16 chipid;
         unsigned long flags;
 
-        pr_info("%s:\n", __func__);
+        pr_debug("%s:\n", __func__);
 
         spin_lock_irqsave(&isp1362_hcd->lock, flags);
         chipid = isp1362_read_reg16(isp1362_hcd, HCCHIPID);
@@ -2773,7 +2773,7 @@ static int __devinit isp1362_probe(struct platform_device *pdev)
         if (irq_res->flags & IORESOURCE_IRQ_LOWLEVEL)
                 irq_flags |= IRQF_TRIGGER_LOW;
 
-        retval = usb_add_hcd(hcd, irq, irq_flags | IRQF_DISABLED | IRQF_SHARED);
+        retval = usb_add_hcd(hcd, irq, irq_flags | IRQF_SHARED);
         if (retval != 0)
                 goto err6;
         pr_info("%s, irq %d\n", hcd->product_desc, irq);
diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c
index 840beda66dd9..27dfab80ed8f 100644
--- a/drivers/usb/host/isp1760-hcd.c
+++ b/drivers/usb/host/isp1760-hcd.c
@@ -21,8 +21,10 @@
 #include <linux/uaccess.h>
 #include <linux/io.h>
 #include <linux/mm.h>
+#include <linux/timer.h>
 #include <asm/unaligned.h>
 #include <asm/cacheflush.h>
+#include <linux/gpio.h>
 
 #include "isp1760-hcd.h"
 
@@ -39,7 +41,6 @@ struct isp1760_hcd {
         int                     int_done_map;
         struct memory_chunk memory_pool[BLOCKS];
         struct list_head        controlqhs, bulkqhs, interruptqhs;
-        int active_ptds;
 
         /* periodic schedule support */
 #define DEFAULT_I_TDPS          1024
@@ -48,6 +49,8 @@ struct isp1760_hcd {
         unsigned long           reset_done;
         unsigned long           next_statechange;
         unsigned int            devflags;
+
+        int                     rst_gpio;
 };
 
 static inline struct isp1760_hcd *hcd_to_priv(struct usb_hcd *hcd)
@@ -114,6 +117,7 @@ struct isp1760_qh {
         u32 toggle;
         u32 ping;
         int slot;
+        int tt_buffer_dirty;    /* See USB2.0 spec section 11.17.5 */
 };
 
 struct urb_listitem {
@@ -432,6 +436,18 @@ static int isp1760_hc_setup(struct usb_hcd *hcd)
         int result;
         u32 scratch, hwmode;
 
+        /* low-level chip reset */
+        if (gpio_is_valid(priv->rst_gpio)) {
+                unsigned int rst_lvl;
+
+                rst_lvl = (priv->devflags &
+                           ISP1760_FLAG_RESET_ACTIVE_HIGH) ? 1 : 0;
+
+                gpio_set_value(priv->rst_gpio, rst_lvl);
+                mdelay(50);
+                gpio_set_value(priv->rst_gpio, !rst_lvl);
+        }
+
         /* Setup HW Mode Control: This assumes a level active-low interrupt */
         hwmode = HW_DATA_BUS_32BIT;
 
@@ -489,10 +505,6 @@ static int isp1760_hc_setup(struct usb_hcd *hcd)
                            16 : 32, (priv->devflags & ISP1760_FLAG_ANALOG_OC) ?
                            "analog" : "digital");
 
-        /* This is weird: at the first plug-in of a device there seems to be
-           one packet queued that never gets returned? */
-        priv->active_ptds = -1;
-
         /* ATL reset */
         reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode | ALL_ATX_RESET);
         mdelay(10);
@@ -514,83 +526,6 @@ static int isp1760_hc_setup(struct usb_hcd *hcd)
         return priv_init(hcd);
 }
 
-static void isp1760_init_maps(struct usb_hcd *hcd)
-{
-        /*set last maps, for iso its only 1, else 32 tds bitmap*/
-        reg_write32(hcd->regs, HC_ATL_PTD_LASTPTD_REG, 0x80000000);
-        reg_write32(hcd->regs, HC_INT_PTD_LASTPTD_REG, 0x80000000);
-        reg_write32(hcd->regs, HC_ISO_PTD_LASTPTD_REG, 0x00000001);
-
-        reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, 0xffffffff);
-        reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, 0xffffffff);
-        reg_write32(hcd->regs, HC_ISO_PTD_SKIPMAP_REG, 0xffffffff);
-
-        reg_write32(hcd->regs, HC_BUFFER_STATUS_REG,
-                                                ATL_BUF_FILL | INT_BUF_FILL);
-}
-
-static void isp1760_enable_interrupts(struct usb_hcd *hcd)
-{
-        reg_write32(hcd->regs, HC_ATL_IRQ_MASK_AND_REG, 0);
-        reg_write32(hcd->regs, HC_ATL_IRQ_MASK_OR_REG, 0xffffffff);
-        reg_write32(hcd->regs, HC_INT_IRQ_MASK_AND_REG, 0);
-        reg_write32(hcd->regs, HC_INT_IRQ_MASK_OR_REG, 0xffffffff);
-        reg_write32(hcd->regs, HC_ISO_IRQ_MASK_AND_REG, 0);
-        reg_write32(hcd->regs, HC_ISO_IRQ_MASK_OR_REG, 0xffffffff);
-        /* step 23 passed */
-}
-
-static int isp1760_run(struct usb_hcd *hcd)
-{
-        int retval;
-        u32 temp;
-        u32 command;
-        u32 chipid;
-
-        hcd->uses_new_polling = 1;
-
-        hcd->state = HC_STATE_RUNNING;
-        isp1760_enable_interrupts(hcd);
-        temp = reg_read32(hcd->regs, HC_HW_MODE_CTRL);
-        reg_write32(hcd->regs, HC_HW_MODE_CTRL, temp | HW_GLOBAL_INTR_EN);
-
-        command = reg_read32(hcd->regs, HC_USBCMD);
-        command &= ~(CMD_LRESET|CMD_RESET);
-        command |= CMD_RUN;
-        reg_write32(hcd->regs, HC_USBCMD, command);
-
-        retval = handshake(hcd, HC_USBCMD, CMD_RUN, CMD_RUN, 250 * 1000);
-        if (retval)
-                return retval;
-
-        /*
-         * XXX
-         * Spec says to write FLAG_CF as last config action, priv code grabs
-         * the semaphore while doing so.
-         */
-        down_write(&ehci_cf_port_reset_rwsem);
-        reg_write32(hcd->regs, HC_CONFIGFLAG, FLAG_CF);
-
-        retval = handshake(hcd, HC_CONFIGFLAG, FLAG_CF, FLAG_CF, 250 * 1000);
-        up_write(&ehci_cf_port_reset_rwsem);
-        if (retval)
-                return retval;
-
-        chipid = reg_read32(hcd->regs, HC_CHIP_ID_REG);
-        dev_info(hcd->self.controller, "USB ISP %04x HW rev. %d started\n",
-                                        chipid & 0xffff, chipid >> 16);
-
-        /* PTD Register Init Part 2, Step 28 */
-        /* enable INTs */
-        isp1760_init_maps(hcd);
-
-        /* GRR this is run-once init(), being done every time the HC starts.
-         * So long as they're part of class devices, we can't do it init()
-         * since the class device isn't created that early.
-         */
-        return 0;
-}
-
 static u32 base_to_chip(u32 base)
 {
         return ((base - 0x400) >> 3);
@@ -813,28 +748,29 @@ static void start_bus_transfer(struct usb_hcd *hcd, u32 ptd_offset, int slot,
         WARN_ON(slots[slot].qh);
         WARN_ON(qtd->status != QTD_PAYLOAD_ALLOC);
 
-        slots[slot].qtd = qtd;
-        slots[slot].qh = qh;
-        qh->slot = slot;
-        qtd->status = QTD_XFER_STARTED; /* Set this before writing ptd, since
-                interrupt routine may preempt and expects this value. */
-        ptd_write(hcd->regs, ptd_offset, slot, ptd);
-        priv->active_ptds++;
-
         /* Make sure done map has not triggered from some unlinked transfer */
         if (ptd_offset == ATL_PTD_OFFSET) {
                 priv->atl_done_map |= reg_read32(hcd->regs,
                                                 HC_ATL_PTD_DONEMAP_REG);
-                priv->atl_done_map &= ~(1 << qh->slot);
+                priv->atl_done_map &= ~(1 << slot);
+        } else {
+                priv->int_done_map |= reg_read32(hcd->regs,
+                                                HC_INT_PTD_DONEMAP_REG);
+                priv->int_done_map &= ~(1 << slot);
+        }
+
+        qh->slot = slot;
+        qtd->status = QTD_XFER_STARTED;
+        slots[slot].timestamp = jiffies;
+        slots[slot].qtd = qtd;
+        slots[slot].qh = qh;
+        ptd_write(hcd->regs, ptd_offset, slot, ptd);
 
+        if (ptd_offset == ATL_PTD_OFFSET) {
                 skip_map = reg_read32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG);
                 skip_map &= ~(1 << qh->slot);
                 reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, skip_map);
         } else {
-                priv->int_done_map |= reg_read32(hcd->regs,
-                                                HC_INT_PTD_DONEMAP_REG);
-                priv->int_done_map &= ~(1 << qh->slot);
-
                 skip_map = reg_read32(hcd->regs, HC_INT_PTD_SKIPMAP_REG);
                 skip_map &= ~(1 << qh->slot);
                 reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, skip_map);
@@ -858,10 +794,7 @@ static void collect_qtds(struct usb_hcd *hcd, struct isp1760_qh *qh,
                 if (qtd->status < QTD_XFER_COMPLETE)
                         break;
 
-                if (list_is_last(&qtd->qtd_list, &qh->qtd_list))
-                        last_qtd = 1;
-                else
-                        last_qtd = qtd->urb != qtd_next->urb;
+                last_qtd = last_qtd_of_urb(qtd, qh);
 
                 if ((!last_qtd) && (qtd->status == QTD_RETIRE))
                         qtd_next->status = QTD_RETIRE;
@@ -902,7 +835,7 @@ static void collect_qtds(struct usb_hcd *hcd, struct isp1760_qh *qh,
                         urb_listitem = kmem_cache_zalloc(urb_listitem_cachep,
                                                                 GFP_ATOMIC);
                         if (unlikely(!urb_listitem))
-                                break;
+                                break; /* Try again on next call */
                         urb_listitem->urb = qtd->urb;
                         list_add_tail(&urb_listitem->urb_list, urb_list);
                 }
@@ -928,6 +861,10 @@ static void enqueue_qtds(struct usb_hcd *hcd, struct isp1760_qh *qh)
                 return;
         }
 
+        /* Make sure this endpoint's TT buffer is clean before queueing ptds */
+        if (qh->tt_buffer_dirty)
+                return;
+
         if (usb_pipeint(list_entry(qh->qtd_list.next, struct isp1760_qtd,
                                                         qtd_list)->urb->pipe)) {
                 ptd_offset = INT_PTD_OFFSET;
@@ -1168,11 +1105,9 @@ static int check_atl_transfer(struct usb_hcd *hcd, struct ptd *ptd,
         return PTD_STATE_QTD_DONE;
 }
 
-static irqreturn_t isp1760_irq(struct usb_hcd *hcd)
+static void handle_done_ptds(struct usb_hcd *hcd)
 {
         struct isp1760_hcd *priv = hcd_to_priv(hcd);
-        u32 imask;
-        irqreturn_t irqret = IRQ_NONE;
         struct ptd ptd;
         struct isp1760_qh *qh;
         int slot;
@@ -1181,27 +1116,14 @@ static irqreturn_t isp1760_irq(struct usb_hcd *hcd)
         u32 ptd_offset;
         struct isp1760_qtd *qtd;
         int modified;
-        static int last_active_ptds;
-        int int_skip_map, atl_skip_map;
-
-        spin_lock(&priv->lock);
-
-        if (!(hcd->state & HC_STATE_RUNNING))
-                goto leave;
-
-        imask = reg_read32(hcd->regs, HC_INTERRUPT_REG);
-        if (unlikely(!imask))
-                goto leave;
-        reg_write32(hcd->regs, HC_INTERRUPT_REG, imask); /* Clear */
+        int skip_map;
 
-        int_skip_map = reg_read32(hcd->regs, HC_INT_PTD_SKIPMAP_REG);
-        atl_skip_map = reg_read32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG);
-        priv->int_done_map |= reg_read32(hcd->regs, HC_INT_PTD_DONEMAP_REG);
-        priv->atl_done_map |= reg_read32(hcd->regs, HC_ATL_PTD_DONEMAP_REG);
-        priv->int_done_map &= ~int_skip_map;
-        priv->atl_done_map &= ~atl_skip_map;
+        skip_map = reg_read32(hcd->regs, HC_INT_PTD_SKIPMAP_REG);
+        priv->int_done_map &= ~skip_map;
+        skip_map = reg_read32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG);
+        priv->atl_done_map &= ~skip_map;
 
-        modified = priv->int_done_map | priv->atl_done_map;
+        modified = priv->int_done_map || priv->atl_done_map;
 
         while (priv->int_done_map || priv->atl_done_map) {
                 if (priv->int_done_map) {
@@ -1240,7 +1162,6 @@ static irqreturn_t isp1760_irq(struct usb_hcd *hcd)
                 slots[slot].qtd = NULL;
                 qh = slots[slot].qh;
                 slots[slot].qh = NULL;
-                priv->active_ptds--;
                 qh->slot = -1;
 
                 WARN_ON(qtd->status != QTD_XFER_STARTED);
@@ -1281,6 +1202,15 @@ static irqreturn_t isp1760_irq(struct usb_hcd *hcd)
 
                 case PTD_STATE_URB_RETIRE:
                         qtd->status = QTD_RETIRE;
+                        if ((qtd->urb->dev->speed != USB_SPEED_HIGH) &&
+                                        (qtd->urb->status != -EPIPE) &&
+                                        (qtd->urb->status != -EREMOTEIO)) {
+                                qh->tt_buffer_dirty = 1;
+                                if (usb_hub_clear_tt_buffer(qtd->urb))
+                                        /* Clear failed; let's hope things work
+                                           anyway */
+                                        qh->tt_buffer_dirty = 0;
+                        }
                         qtd = NULL;
                         qh->toggle = 0;
                         qh->ping = 0;
@@ -1311,22 +1241,28 @@ static irqreturn_t isp1760_irq(struct usb_hcd *hcd)
 
         if (modified)
                 schedule_ptds(hcd);
+}
 
-        /* ISP1760 Errata 2 explains that interrupts may be missed (or not
-           happen?) if two USB devices are running simultaneously. Perhaps
-           this happens when a PTD is finished during interrupt handling;
-           enable SOF interrupts if PTDs are still scheduled when exiting this
-           interrupt handler, just to be safe. */
+static irqreturn_t isp1760_irq(struct usb_hcd *hcd)
+{
+        struct isp1760_hcd *priv = hcd_to_priv(hcd);
+        u32 imask;
+        irqreturn_t irqret = IRQ_NONE;
 
-        if (priv->active_ptds != last_active_ptds) {
-                if (priv->active_ptds > 0)
-                        reg_write32(hcd->regs, HC_INTERRUPT_ENABLE,
-                                                INTERRUPT_ENABLE_SOT_MASK);
-                else
-                        reg_write32(hcd->regs, HC_INTERRUPT_ENABLE,
-                                                INTERRUPT_ENABLE_MASK);
-                last_active_ptds = priv->active_ptds;
-        }
+        spin_lock(&priv->lock);
+
+        if (!(hcd->state & HC_STATE_RUNNING))
+                goto leave;
+
+        imask = reg_read32(hcd->regs, HC_INTERRUPT_REG);
+        if (unlikely(!imask))
+                goto leave;
+        reg_write32(hcd->regs, HC_INTERRUPT_REG, imask); /* Clear */
+
+        priv->int_done_map |= reg_read32(hcd->regs, HC_INT_PTD_DONEMAP_REG);
+        priv->atl_done_map |= reg_read32(hcd->regs, HC_ATL_PTD_DONEMAP_REG);
+
+        handle_done_ptds(hcd);
 
         irqret = IRQ_HANDLED;
 leave:
@@ -1335,6 +1271,138 @@ leave:
         return irqret;
 }
 
+/*
+ * Workaround for problem described in chip errata 2:
+ *
+ * Sometimes interrupts are not generated when ATL (not INT?) completion occurs.
+ * One solution suggested in the errata is to use SOF interrupts _instead_of_
+ * ATL done interrupts (the "instead of" might be important since it seems
+ * enabling ATL interrupts also causes the chip to sometimes - rarely - "forget"
+ * to set the PTD's done bit in addition to not generating an interrupt!).
+ *
+ * So if we use SOF + ATL interrupts, we sometimes get stale PTDs since their
+ * done bit is not being set. This is bad - it blocks the endpoint until reboot.
+ *
+ * If we use SOF interrupts only, we get latency between ptd completion and the
+ * actual handling. This is very noticeable in testusb runs which takes several
+ * minutes longer without ATL interrupts.
+ *
+ * A better solution is to run the code below every SLOT_CHECK_PERIOD ms. If it
+ * finds active ATL slots which are older than SLOT_TIMEOUT ms, it checks the
+ * slot's ACTIVE and VALID bits. If these are not set, the ptd is considered
+ * completed and its done map bit is set.
+ *
+ * The values of SLOT_TIMEOUT and SLOT_CHECK_PERIOD have been arbitrarily chosen
+ * not to cause too much lag when this HW bug occurs, while still hopefully
+ * ensuring that the check does not falsely trigger.
+ */
+#define SLOT_TIMEOUT 300
+#define SLOT_CHECK_PERIOD 200
+static struct timer_list errata2_timer;
+
+void errata2_function(unsigned long data)
+{
+        struct usb_hcd *hcd = (struct usb_hcd *) data;
+        struct isp1760_hcd *priv = hcd_to_priv(hcd);
+        int slot;
+        struct ptd ptd;
+        unsigned long spinflags;
+
+        spin_lock_irqsave(&priv->lock, spinflags);
+
+        for (slot = 0; slot < 32; slot++)
+                if (priv->atl_slots[slot].qh && time_after(jiffies,
+                                        priv->atl_slots[slot].timestamp +
+                                        SLOT_TIMEOUT * HZ / 1000)) {
+                        ptd_read(hcd->regs, ATL_PTD_OFFSET, slot, &ptd);
+                        if (!FROM_DW0_VALID(ptd.dw0) &&
+                                        !FROM_DW3_ACTIVE(ptd.dw3))
+                                priv->atl_done_map |= 1 << slot;
+                }
+
+        if (priv->atl_done_map)
+                handle_done_ptds(hcd);
+
+        spin_unlock_irqrestore(&priv->lock, spinflags);
+
+        errata2_timer.expires = jiffies + SLOT_CHECK_PERIOD * HZ / 1000;
+        add_timer(&errata2_timer);
+}
+
+static int isp1760_run(struct usb_hcd *hcd)
+{
+        int retval;
+        u32 temp;
+        u32 command;
+        u32 chipid;
+
+        hcd->uses_new_polling = 1;
+
+        hcd->state = HC_STATE_RUNNING;
+
+        /* Set PTD interrupt AND & OR maps */
+        reg_write32(hcd->regs, HC_ATL_IRQ_MASK_AND_REG, 0);
+        reg_write32(hcd->regs, HC_ATL_IRQ_MASK_OR_REG, 0xffffffff);
+        reg_write32(hcd->regs, HC_INT_IRQ_MASK_AND_REG, 0);
+        reg_write32(hcd->regs, HC_INT_IRQ_MASK_OR_REG, 0xffffffff);
+        reg_write32(hcd->regs, HC_ISO_IRQ_MASK_AND_REG, 0);
+        reg_write32(hcd->regs, HC_ISO_IRQ_MASK_OR_REG, 0xffffffff);
+        /* step 23 passed */
+
+        temp = reg_read32(hcd->regs, HC_HW_MODE_CTRL);
+        reg_write32(hcd->regs, HC_HW_MODE_CTRL, temp | HW_GLOBAL_INTR_EN);
+
+        command = reg_read32(hcd->regs, HC_USBCMD);
+        command &= ~(CMD_LRESET|CMD_RESET);
+        command |= CMD_RUN;
+        reg_write32(hcd->regs, HC_USBCMD, command);
+
+        retval = handshake(hcd, HC_USBCMD, CMD_RUN, CMD_RUN, 250 * 1000);
+        if (retval)
+                return retval;
+
+        /*
+         * XXX
+         * Spec says to write FLAG_CF as last config action, priv code grabs
+         * the semaphore while doing so.
+         */
+        down_write(&ehci_cf_port_reset_rwsem);
+        reg_write32(hcd->regs, HC_CONFIGFLAG, FLAG_CF);
+
+        retval = handshake(hcd, HC_CONFIGFLAG, FLAG_CF, FLAG_CF, 250 * 1000);
+        up_write(&ehci_cf_port_reset_rwsem);
+        if (retval)
+                return retval;
+
+        init_timer(&errata2_timer);
+        errata2_timer.function = errata2_function;
+        errata2_timer.data = (unsigned long) hcd;
+        errata2_timer.expires = jiffies + SLOT_CHECK_PERIOD * HZ / 1000;
+        add_timer(&errata2_timer);
+
+        chipid = reg_read32(hcd->regs, HC_CHIP_ID_REG);
+        dev_info(hcd->self.controller, "USB ISP %04x HW rev. %d started\n",
+                                        chipid & 0xffff, chipid >> 16);
+
+        /* PTD Register Init Part 2, Step 28 */
+
+        /* Setup registers controlling PTD checking */
+        reg_write32(hcd->regs, HC_ATL_PTD_LASTPTD_REG, 0x80000000);
+        reg_write32(hcd->regs, HC_INT_PTD_LASTPTD_REG, 0x80000000);
+        reg_write32(hcd->regs, HC_ISO_PTD_LASTPTD_REG, 0x00000001);
+        reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, 0xffffffff);
+        reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, 0xffffffff);
+        reg_write32(hcd->regs, HC_ISO_PTD_SKIPMAP_REG, 0xffffffff);
+        reg_write32(hcd->regs, HC_BUFFER_STATUS_REG,
+                                                ATL_BUF_FILL | INT_BUF_FILL);
+
+        /* GRR this is run-once init(), being done every time the HC starts.
+         * So long as they're part of class devices, we can't do it init()
+         * since the class device isn't created that early.
+         */
+        return 0;
+}
+
 static int qtd_fill(struct isp1760_qtd *qtd, void *databuffer, size_t len)
 {
         qtd->data_buffer = databuffer;
@@ -1503,7 +1571,6 @@ static int isp1760_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
         packetize_urb(hcd, urb, &new_qtds, mem_flags);
         if (list_empty(&new_qtds))
                 return -ENOMEM;
-        urb->hcpriv = NULL; /* Used to signal unlink to interrupt handler */
 
         retval = 0;
         spin_lock_irqsave(&priv->lock, spinflags);
@@ -1531,6 +1598,7 @@ static int isp1760_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
                 qh = qh_alloc(GFP_ATOMIC);
                 if (!qh) {
                         retval = -ENOMEM;
+                        usb_hcd_unlink_urb_from_ep(hcd, urb);
                         goto out;
                 }
                 list_add_tail(&qh->qh_list, ep_queue);
@@ -1570,7 +1638,41 @@ static void kill_transfer(struct usb_hcd *hcd, struct urb *urb,
         }
 
         qh->slot = -1;
-        priv->active_ptds--;
+}
+
+/*
+ * Retire the qtds beginning at 'qtd' and belonging all to the same urb, killing
+ * any active transfer belonging to the urb in the process.
+ */
+static void dequeue_urb_from_qtd(struct usb_hcd *hcd, struct isp1760_qh *qh,
+                                                struct isp1760_qtd *qtd)
+{
+        struct urb *urb;
+        int urb_was_running;
+
+        urb = qtd->urb;
+        urb_was_running = 0;
+        list_for_each_entry_from(qtd, &qh->qtd_list, qtd_list) {
+                if (qtd->urb != urb)
+                        break;
+
+                if (qtd->status >= QTD_XFER_STARTED)
+                        urb_was_running = 1;
+                if (last_qtd_of_urb(qtd, qh) &&
+                                        (qtd->status >= QTD_XFER_COMPLETE))
+                        urb_was_running = 0;
+
+                if (qtd->status == QTD_XFER_STARTED)
+                        kill_transfer(hcd, urb, qh);
+                qtd->status = QTD_RETIRE;
+        }
+
+        if ((urb->dev->speed != USB_SPEED_HIGH) && urb_was_running) {
+                qh->tt_buffer_dirty = 1;
+                if (usb_hub_clear_tt_buffer(urb))
+                        /* Clear failed; let's hope things work anyway */
+                        qh->tt_buffer_dirty = 0;
+        }
 }
 
 static int isp1760_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
@@ -1595,9 +1697,8 @@ static int isp1760_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
 
         list_for_each_entry(qtd, &qh->qtd_list, qtd_list)
                 if (qtd->urb == urb) {
-                        if (qtd->status == QTD_XFER_STARTED)
-                                kill_transfer(hcd, urb, qh);
-                        qtd->status = QTD_RETIRE;
+                        dequeue_urb_from_qtd(hcd, qh, qtd);
+                        break;
                 }
 
         urb->status = status;
@@ -1622,12 +1723,11 @@ static void isp1760_endpoint_disable(struct usb_hcd *hcd,
         if (!qh)
                 goto out;
 
-        list_for_each_entry(qtd, &qh->qtd_list, qtd_list) {
-                if (qtd->status == QTD_XFER_STARTED)
-                        kill_transfer(hcd, qtd->urb, qh);
-                qtd->status = QTD_RETIRE;
-                qtd->urb->status = -ECONNRESET;
-        }
+        list_for_each_entry(qtd, &qh->qtd_list, qtd_list)
+                if (qtd->status != QTD_RETIRE) {
+                        dequeue_urb_from_qtd(hcd, qh, qtd);
+                        qtd->urb->status = -ECONNRESET;
+                }
 
         ep->hcpriv = NULL;
         /* Cannot free qh here since it will be parsed by schedule_ptds() */
@@ -2021,6 +2121,8 @@ static void isp1760_stop(struct usb_hcd *hcd)
         struct isp1760_hcd *priv = hcd_to_priv(hcd);
         u32 temp;
 
+        del_timer(&errata2_timer);
+
         isp1760_hub_control(hcd, ClearPortFeature, USB_PORT_FEAT_POWER, 1,
                         NULL, 0);
         mdelay(20);
@@ -2048,6 +2150,23 @@ static void isp1760_shutdown(struct usb_hcd *hcd)
         reg_write32(hcd->regs, HC_USBCMD, command);
 }
 
+static void isp1760_clear_tt_buffer_complete(struct usb_hcd *hcd,
+                                                struct usb_host_endpoint *ep)
+{
+        struct isp1760_hcd *priv = hcd_to_priv(hcd);
+        struct isp1760_qh *qh = ep->hcpriv;
+        unsigned long spinflags;
+
+        if (!qh)
+                return;
+
+        spin_lock_irqsave(&priv->lock, spinflags);
+        qh->tt_buffer_dirty = 0;
+        schedule_ptds(hcd);
+        spin_unlock_irqrestore(&priv->lock, spinflags);
+}
+
+
 static const struct hc_driver isp1760_hc_driver = {
         .description            = "isp1760-hcd",
         .product_desc           = "NXP ISP1760 USB Host Controller",
@@ -2064,6 +2183,7 @@ static const struct hc_driver isp1760_hc_driver = {
         .get_frame_number       = isp1760_get_frame,
         .hub_status_data        = isp1760_hub_status_data,
         .hub_control            = isp1760_hub_control,
+        .clear_tt_buffer_complete       = isp1760_clear_tt_buffer_complete,
 };
 
 int __init init_kmem_once(void)
@@ -2102,6 +2222,7 @@ void deinit_kmem_cache(void)
 
 struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len,
                                  int irq, unsigned long irqflags,
+                                 int rst_gpio,
                                  struct device *dev, const char *busname,
                                  unsigned int devflags)
 {
@@ -2121,6 +2242,7 @@ struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len,
 
         priv = hcd_to_priv(hcd);
         priv->devflags = devflags;
+        priv->rst_gpio = rst_gpio;
         init_memory(priv);
         hcd->regs = ioremap(res_start, res_len);
         if (!hcd->regs) {
diff --git a/drivers/usb/host/isp1760-hcd.h b/drivers/usb/host/isp1760-hcd.h
index 014a7dfadf91..33dc79ccaa6b 100644
--- a/drivers/usb/host/isp1760-hcd.h
+++ b/drivers/usb/host/isp1760-hcd.h
@@ -4,6 +4,7 @@
 /* exports for if */
 struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len,
                                  int irq, unsigned long irqflags,
+                                 int rst_gpio,
                                  struct device *dev, const char *busname,
                                  unsigned int devflags);
 int init_kmem_once(void);
@@ -73,7 +74,6 @@ void deinit_kmem_cache(void);
 #define HC_EOT_INT              (1 << 3)
 #define HC_SOT_INT              (1 << 1)
 #define INTERRUPT_ENABLE_MASK   (HC_INTL_INT | HC_ATL_INT)
-#define INTERRUPT_ENABLE_SOT_MASK       (HC_SOT_INT)
 
 #define HC_ISO_IRQ_MASK_OR_REG  0x318
 #define HC_INT_IRQ_MASK_OR_REG  0x31C
@@ -107,6 +107,7 @@ struct ptd {
 struct slotinfo {
         struct isp1760_qh *qh;
         struct isp1760_qtd *qtd;
+        unsigned long timestamp;
 };
 
 
@@ -126,6 +127,7 @@ typedef void (packet_enqueue)(struct usb_hcd *hcd, struct isp1760_qh *qh,
 #define ISP1760_FLAG_ISP1761            0x00000040 /* Chip is ISP1761 */
 #define ISP1760_FLAG_INTR_POL_HIGH      0x00000080 /* Interrupt polarity active high */
 #define ISP1760_FLAG_INTR_EDGE_TRIG     0x00000100 /* Interrupt edge triggered */
+#define ISP1760_FLAG_RESET_ACTIVE_HIGH  0x80000000 /* RESET GPIO active high */
 
 /* chip memory management */
 struct memory_chunk {
@@ -188,6 +190,7 @@ struct memory_chunk {
 #define DW3_BABBLE_BIT                  (1 << 29)
 #define DW3_HALT_BIT                    (1 << 30)
 #define DW3_ACTIVE_BIT                  (1 << 31)
+#define FROM_DW3_ACTIVE(x)              (((x) >> 31) & 0x01)
 
 #define INT_UNDERRUN                    (1 << 2)
 #define INT_BABBLE                      (1 << 1)
diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c
index 7ee30056f373..2c7fc830c9e4 100644
--- a/drivers/usb/host/isp1760-if.c
+++ b/drivers/usb/host/isp1760-if.c
@@ -17,19 +17,28 @@
 
 #include "isp1760-hcd.h"
 
-#ifdef CONFIG_PPC_OF
+#ifdef CONFIG_OF
+#include <linux/slab.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_gpio.h>
 #endif
 
 #ifdef CONFIG_PCI
 #include <linux/pci.h>
 #endif
 
-#ifdef CONFIG_PPC_OF
+#ifdef CONFIG_OF
+struct isp1760 {
+        struct usb_hcd *hcd;
+        int rst_gpio;
+};
+
 static int of_isp1760_probe(struct platform_device *dev)
 {
-        struct usb_hcd *hcd;
+        struct isp1760 *drvdata;
         struct device_node *dp = dev->dev.of_node;
         struct resource *res;
         struct resource memory;
@@ -39,6 +48,11 @@ static int of_isp1760_probe(struct platform_device *dev)
         int ret;
         const unsigned int *prop;
         unsigned int devflags = 0;
+        enum of_gpio_flags gpio_flags;
+
+        drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL);
+        if (!drvdata)
+                return -ENOMEM;
 
         ret = of_address_to_resource(dp, 0, &memory);
         if (ret)
@@ -78,32 +92,57 @@ static int of_isp1760_probe(struct platform_device *dev)
         if (of_get_property(dp, "dreq-polarity", NULL) != NULL)
                 devflags |= ISP1760_FLAG_DREQ_POL_HIGH;
 
-        hcd = isp1760_register(memory.start, res_len, virq,
-                IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev),
-                devflags);
-        if (IS_ERR(hcd)) {
-                ret = PTR_ERR(hcd);
-                goto release_reg;
+        drvdata->rst_gpio = of_get_gpio_flags(dp, 0, &gpio_flags);
+        if (gpio_is_valid(drvdata->rst_gpio)) {
+                ret = gpio_request(drvdata->rst_gpio, dev_name(&dev->dev));
+                if (!ret) {
+                        if (!(gpio_flags & OF_GPIO_ACTIVE_LOW)) {
+                                devflags |= ISP1760_FLAG_RESET_ACTIVE_HIGH;
+                                gpio_direction_output(drvdata->rst_gpio, 0);
+                        } else {
+                                gpio_direction_output(drvdata->rst_gpio, 1);
+                        }
+                } else {
+                        drvdata->rst_gpio = ret;
+                }
         }
 
-        dev_set_drvdata(&dev->dev, hcd);
+        drvdata->hcd = isp1760_register(memory.start, res_len, virq,
+                                        IRQF_SHARED, drvdata->rst_gpio,
+                                        &dev->dev, dev_name(&dev->dev),
+                                        devflags);
+        if (IS_ERR(drvdata->hcd)) {
+                ret = PTR_ERR(drvdata->hcd);
+                goto free_gpio;
+        }
+
+        dev_set_drvdata(&dev->dev, drvdata);
         return ret;
 
+free_gpio:
+        if (gpio_is_valid(drvdata->rst_gpio))
+                gpio_free(drvdata->rst_gpio);
 release_reg:
         release_mem_region(memory.start, res_len);
+        kfree(drvdata);
         return ret;
 }
 
 static int of_isp1760_remove(struct platform_device *dev)
 {
-        struct usb_hcd *hcd = dev_get_drvdata(&dev->dev);
+        struct isp1760 *drvdata = dev_get_drvdata(&dev->dev);
 
         dev_set_drvdata(&dev->dev, NULL);
 
-        usb_remove_hcd(hcd);
-        iounmap(hcd->regs);
-        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-        usb_put_hcd(hcd);
+        usb_remove_hcd(drvdata->hcd);
+        iounmap(drvdata->hcd->regs);
+        release_mem_region(drvdata->hcd->rsrc_start, drvdata->hcd->rsrc_len);
+        usb_put_hcd(drvdata->hcd);
+
+        if (gpio_is_valid(drvdata->rst_gpio))
+                gpio_free(drvdata->rst_gpio);
+
+        kfree(drvdata);
         return 0;
 }
 
@@ -240,7 +279,7 @@ static int __devinit isp1761_pci_probe(struct pci_dev *dev,
 
         dev->dev.dma_mask = NULL;
         hcd = isp1760_register(pci_mem_phy0, memlength, dev->irq,
-                IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev),
+                IRQF_SHARED, -ENOENT, &dev->dev, dev_name(&dev->dev),
                 devflags);
         if (IS_ERR(hcd)) {
                 ret_status = -ENODEV;
@@ -313,7 +352,7 @@ static int __devinit isp1760_plat_probe(struct platform_device *pdev)
         resource_size_t mem_size;
         struct isp1760_platform_data *priv = pdev->dev.platform_data;
         unsigned int devflags = 0;
-        unsigned long irqflags = IRQF_SHARED | IRQF_DISABLED;
+        unsigned long irqflags = IRQF_SHARED;
 
         mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (!mem_res) {
@@ -351,7 +390,8 @@ static int __devinit isp1760_plat_probe(struct platform_device *pdev)
         }
 
         hcd = isp1760_register(mem_res->start, mem_size, irq_res->start,
-                               irqflags, &pdev->dev, dev_name(&pdev->dev), devflags);
+                               irqflags, -ENOENT,
+                               &pdev->dev, dev_name(&pdev->dev), devflags);
         if (IS_ERR(hcd)) {
                 pr_warning("isp1760: Failed to register the HCD device\n");
                 ret = -ENODEV;
@@ -396,7 +436,7 @@ static int __init isp1760_init(void)
         ret = platform_driver_register(&isp1760_plat_driver);
         if (!ret)
                 any_ret = 0;
-#ifdef CONFIG_PPC_OF
+#ifdef CONFIG_OF
         ret = platform_driver_register(&isp1760_of_driver);
         if (!ret)
                 any_ret = 0;
@@ -416,7 +456,7 @@ module_init(isp1760_init);
 static void __exit isp1760_exit(void)
 {
         platform_driver_unregister(&isp1760_plat_driver);
-#ifdef CONFIG_PPC_OF
+#ifdef CONFIG_OF
         platform_driver_unregister(&isp1760_of_driver);
 #endif
 #ifdef CONFIG_PCI
diff --git a/drivers/usb/host/ohci-ath79.c b/drivers/usb/host/ohci-ath79.c
index c620c50f6770..18d574d6958b 100644
--- a/drivers/usb/host/ohci-ath79.c
+++ b/drivers/usb/host/ohci-ath79.c
@@ -111,7 +111,7 @@ static int ohci_ath79_probe(struct platform_device *pdev)
 
         ohci_hcd_init(hcd_to_ohci(hcd));
 
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+        ret = usb_add_hcd(hcd, irq, 0);
         if (ret)
                 goto err_stop_hcd;
 
diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c
index 958d985f2951..6b7bc50dfeaa 100644
--- a/drivers/usb/host/ohci-au1xxx.c
+++ b/drivers/usb/host/ohci-au1xxx.c
@@ -218,7 +218,7 @@ static int ohci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
         ohci_hcd_init(hcd_to_ohci(hcd));
 
         ret = usb_add_hcd(hcd, pdev->resource[1].start,
-                          IRQF_DISABLED | IRQF_SHARED);
+                          IRQF_SHARED);
         if (ret == 0) {
                 platform_set_drvdata(pdev, hcd);
                 return ret;
diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
index 6aca2c4453f7..843509778a33 100644
--- a/drivers/usb/host/ohci-da8xx.c
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -344,7 +344,7 @@ static int usb_hcd_da8xx_probe(const struct hc_driver *driver,
                 error = -ENODEV;
                 goto err4;
         }
-        error = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+        error = usb_add_hcd(hcd, irq, 0);
         if (error)
                 goto err4;
 
diff --git a/drivers/usb/host/ohci-ep93xx.c b/drivers/usb/host/ohci-ep93xx.c
index 4e681613e7ae..dc45d489d00e 100644
--- a/drivers/usb/host/ohci-ep93xx.c
+++ b/drivers/usb/host/ohci-ep93xx.c
@@ -81,7 +81,7 @@ static int usb_hcd_ep93xx_probe(const struct hc_driver *driver,
 
         ohci_hcd_init(hcd_to_ohci(hcd));
 
-        retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_DISABLED);
+        retval = usb_add_hcd(hcd, pdev->resource[1].start, 0);
         if (retval == 0)
                 return retval;
 
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index f9cf3f04b742..34efd479e068 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1114,6 +1114,11 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER         ohci_hcd_ath79_driver
 #endif
 
+#ifdef CONFIG_NLM_XLR
+#include "ohci-xls.c"
+#define PLATFORM_DRIVER         ohci_xls_driver
+#endif
+
 #if     !defined(PCI_DRIVER) &&         \
         !defined(PLATFORM_DRIVER) &&    \
         !defined(OMAP1_PLATFORM_DRIVER) &&      \
diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index 9154615292db..2f00040fc408 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -356,10 +356,7 @@ static void ohci_finish_controller_resume(struct usb_hcd *hcd)
                 msleep(20);
         }
 
-        /* Does the root hub have a port wakeup pending? */
-        if (ohci_readl(ohci, &ohci->regs->intrstatus) &
-                        (OHCI_INTR_RD | OHCI_INTR_RHSC))
-                usb_hcd_resume_root_hub(hcd);
+        usb_hcd_resume_root_hub(hcd);
 }
 
 /* Carry out polling-, autostop-, and autoresume-related state changes */
diff --git a/drivers/usb/host/ohci-octeon.c b/drivers/usb/host/ohci-octeon.c
index d8b45647d1dc..d469bf9b9e54 100644
--- a/drivers/usb/host/ohci-octeon.c
+++ b/drivers/usb/host/ohci-octeon.c
@@ -164,7 +164,7 @@ static int ohci_octeon_drv_probe(struct platform_device *pdev)
 
         ohci_hcd_init(ohci);
 
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (ret) {
                 dev_dbg(&pdev->dev, "failed to add hcd with err %d\n", ret);
                 goto err3;
diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index 5645f70b9214..e4b8782cc6e2 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -14,7 +14,7 @@
  * This file is licenced under the GPL.
  */
 
-#include <linux/signal.h>       /* IRQF_DISABLED */
+#include <linux/signal.h>
 #include <linux/jiffies.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
@@ -363,7 +363,7 @@ static int usb_hcd_omap_probe (const struct hc_driver *driver,
                 retval = -ENXIO;
                 goto err3;
         }
-        retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+        retval = usb_add_hcd(hcd, irq, 0);
         if (retval)
                 goto err3;
 
diff --git a/drivers/usb/host/ohci-omap3.c b/drivers/usb/host/ohci-omap3.c
index 6048f2f64f73..516ebc4d6cc2 100644
--- a/drivers/usb/host/ohci-omap3.c
+++ b/drivers/usb/host/ohci-omap3.c
@@ -149,7 +149,7 @@ static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev)
 
         res = platform_get_resource_byname(pdev,
                                 IORESOURCE_MEM, "ohci");
-        if (!ret) {
+        if (!res) {
                 dev_err(dev, "UHH OHCI get resource failed\n");
                 return -ENOMEM;
         }
@@ -180,7 +180,7 @@ static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev)
 
         ohci_hcd_init(hcd_to_ohci(hcd));
 
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+        ret = usb_add_hcd(hcd, irq, 0);
         if (ret) {
                 dev_dbg(dev, "failed to add hcd with err %d\n", ret);
                 goto err_add_hcd;
diff --git a/drivers/usb/host/ohci-pnx4008.c b/drivers/usb/host/ohci-pnx4008.c
index 653d6a60edb5..9ad8bee22c15 100644
--- a/drivers/usb/host/ohci-pnx4008.c
+++ b/drivers/usb/host/ohci-pnx4008.c
@@ -398,7 +398,7 @@ static int __devinit usb_hcd_pnx4008_probe(struct platform_device *pdev)
         ohci_hcd_init(ohci);
 
         dev_info(&pdev->dev, "at 0x%p, irq %d\n", hcd->regs, hcd->irq);
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+        ret = usb_add_hcd(hcd, irq, 0);
         if (ret == 0)
                 return ret;
 
diff --git a/drivers/usb/host/ohci-pnx8550.c b/drivers/usb/host/ohci-pnx8550.c
index 28467e288a93..f13d08f94d6b 100644
--- a/drivers/usb/host/ohci-pnx8550.c
+++ b/drivers/usb/host/ohci-pnx8550.c
@@ -107,7 +107,7 @@ int usb_hcd_pnx8550_probe (const struct hc_driver *driver,
 
         ohci_hcd_init(hcd_to_ohci(hcd));
 
-        retval = usb_add_hcd(hcd, dev->resource[1].start, IRQF_DISABLED);
+        retval = usb_add_hcd(hcd, dev->resource[1].start, 0);
         if (retval == 0)
                 return retval;
 
diff --git a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c
index 0c12f4e14dcd..d24cc89de16f 100644
--- a/drivers/usb/host/ohci-ppc-of.c
+++ b/drivers/usb/host/ohci-ppc-of.c
@@ -143,7 +143,7 @@ static int __devinit ohci_hcd_ppc_of_probe(struct platform_device *op)
 
         ohci_hcd_init(ohci);
 
-        rv = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+        rv = usb_add_hcd(hcd, irq, 0);
         if (rv == 0)
                 return 0;
 
diff --git a/drivers/usb/host/ohci-ppc-soc.c b/drivers/usb/host/ohci-ppc-soc.c
index c0f595c44487..1514b7067470 100644
--- a/drivers/usb/host/ohci-ppc-soc.c
+++ b/drivers/usb/host/ohci-ppc-soc.c
@@ -80,7 +80,7 @@ static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver,
 #endif
         ohci_hcd_init(ohci);
 
-        retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+        retval = usb_add_hcd(hcd, irq, 0);
         if (retval == 0)
                 return retval;
 
diff --git a/drivers/usb/host/ohci-ps3.c b/drivers/usb/host/ohci-ps3.c
index 700950455f4d..6fd4fa1f19bb 100644
--- a/drivers/usb/host/ohci-ps3.c
+++ b/drivers/usb/host/ohci-ps3.c
@@ -164,7 +164,7 @@ static int __devinit ps3_ohci_probe(struct ps3_system_bus_device *dev)
 
         ps3_system_bus_set_drvdata(dev, hcd);
 
-        result = usb_add_hcd(hcd, virq, IRQF_DISABLED);
+        result = usb_add_hcd(hcd, virq, 0);
 
         if (result) {
                 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index 80be5472783a..29dfefe1c726 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -359,7 +359,7 @@ int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device
 
         ohci_hcd_init(hcd_to_ohci(hcd));
 
-        retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+        retval = usb_add_hcd(hcd, irq, 0);
         if (retval == 0)
                 return retval;
 
diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c
index dd24fc115e48..15dc51ded61a 100644
--- a/drivers/usb/host/ohci-q.c
+++ b/drivers/usb/host/ohci-q.c
@@ -428,7 +428,7 @@ static struct ed *ed_get (
                 ed->type = usb_pipetype(pipe);
 
                 info |= (ep->desc.bEndpointAddress & ~USB_DIR_IN) << 7;
-                info |= le16_to_cpu(ep->desc.wMaxPacketSize) << 16;
+                info |= usb_endpoint_maxp(&ep->desc) << 16;
                 if (udev->speed == USB_SPEED_LOW)
                         info |= ED_LOWSPEED;
                 /* only control transfers store pids in tds */
@@ -444,7 +444,7 @@ static struct ed *ed_get (
                                 ed->load = usb_calc_bus_time (
                                         udev->speed, !is_out,
                                         ed->type == PIPE_ISOCHRONOUS,
-                                        le16_to_cpu(ep->desc.wMaxPacketSize))
+                                        usb_endpoint_maxp(&ep->desc))
                                                 / 1000;
                         }
                 }
diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c
index 7c9a4d55526b..a1877c47601e 100644
--- a/drivers/usb/host/ohci-s3c2410.c
+++ b/drivers/usb/host/ohci-s3c2410.c
@@ -384,7 +384,7 @@ static int usb_hcd_s3c2410_probe(const struct hc_driver *driver,
 
         ohci_hcd_init(hcd_to_ohci(hcd));
 
-        retval = usb_add_hcd(hcd, dev->resource[1].start, IRQF_DISABLED);
+        retval = usb_add_hcd(hcd, dev->resource[1].start, 0);
         if (retval != 0)
                 goto err_ioremap;
 
diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c
index 4204d9720d23..4bde4f9821ba 100644
--- a/drivers/usb/host/ohci-sa1111.c
+++ b/drivers/usb/host/ohci-sa1111.c
@@ -143,7 +143,7 @@ int usb_hcd_sa1111_probe (const struct hc_driver *driver,
         sa1111_start_hc(dev);
         ohci_hcd_init(hcd_to_ohci(hcd));
 
-        retval = usb_add_hcd(hcd, dev->irq[1], IRQF_DISABLED);
+        retval = usb_add_hcd(hcd, dev->irq[1], 0);
         if (retval == 0)
                 return retval;
 
diff --git a/drivers/usb/host/ohci-sh.c b/drivers/usb/host/ohci-sh.c
index 14cecb52a9fe..afc4eb6bb9d0 100644
--- a/drivers/usb/host/ohci-sh.c
+++ b/drivers/usb/host/ohci-sh.c
@@ -109,7 +109,7 @@ static int ohci_hcd_sh_probe(struct platform_device *pdev)
         hcd->regs = (void __iomem *)res->start;
         hcd->rsrc_start = res->start;
         hcd->rsrc_len = resource_size(res);
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (ret != 0) {
                 err("Failed to add hcd");
                 usb_put_hcd(hcd);
diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c
index 78918ca0da23..968cea2b6d4e 100644
--- a/drivers/usb/host/ohci-sm501.c
+++ b/drivers/usb/host/ohci-sm501.c
@@ -165,7 +165,7 @@ static int ohci_hcd_sm501_drv_probe(struct platform_device *pdev)
 
         ohci_hcd_init(hcd_to_ohci(hcd));
 
-        retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
         if (retval)
                 goto err5;
 
diff --git a/drivers/usb/host/ohci-spear.c b/drivers/usb/host/ohci-spear.c
index 4fd4bea9ac7a..69874654f3b5 100644
--- a/drivers/usb/host/ohci-spear.c
+++ b/drivers/usb/host/ohci-spear.c
@@ -152,7 +152,7 @@ static int spear_ohci_hcd_drv_probe(struct platform_device *pdev)
         spear_start_ohci(ohci_p);
         ohci_hcd_init(hcd_to_ohci(hcd));
 
-        retval = usb_add_hcd(hcd, platform_get_irq(pdev, 0), IRQF_DISABLED);
+        retval = usb_add_hcd(hcd, platform_get_irq(pdev, 0), 0);
         if (retval == 0)
                 return retval;
 
diff --git a/drivers/usb/host/ohci-ssb.c b/drivers/usb/host/ohci-ssb.c
index c4aea3b8315e..5ba18595d6f7 100644
--- a/drivers/usb/host/ohci-ssb.c
+++ b/drivers/usb/host/ohci-ssb.c
@@ -169,7 +169,7 @@ static int ssb_ohci_attach(struct ssb_device *dev)
         hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
         if (!hcd->regs)
                 goto err_put_hcd;
-        err = usb_add_hcd(hcd, dev->irq, IRQF_DISABLED | IRQF_SHARED);
+        err = usb_add_hcd(hcd, dev->irq, IRQF_SHARED);
         if (err)
                 goto err_iounmap;
 
diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c
index 57ad1271fc9b..06331d931171 100644
--- a/drivers/usb/host/ohci-tmio.c
+++ b/drivers/usb/host/ohci-tmio.c
@@ -244,7 +244,7 @@ static int __devinit ohci_hcd_tmio_drv_probe(struct platform_device *dev)
         ohci = hcd_to_ohci(hcd);
         ohci_hcd_init(ohci);
 
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+        ret = usb_add_hcd(hcd, irq, 0);
         if (ret)
                 goto err_add_hcd;
 
diff --git a/drivers/usb/host/ohci-xls.c b/drivers/usb/host/ohci-xls.c
new file mode 100644
index 000000000000..a3a9c6f45b91
--- /dev/null
+++ b/drivers/usb/host/ohci-xls.c
@@ -0,0 +1,151 @@
+/*
+ * OHCI HCD for Netlogic XLS processors.
+ *
+ * (C) Copyright 2011 Netlogic Microsystems Inc.
+ *
+ *  Based on ohci-au1xxx.c, and other Linux OHCI drivers.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/signal.h>
+
+static int ohci_xls_probe_internal(const struct hc_driver *driver,
+                        struct platform_device *dev)
+{
+        struct resource *res;
+        struct usb_hcd *hcd;
+        int retval, irq;
+
+        /* Get our IRQ from an earlier registered Platform Resource */
+        irq = platform_get_irq(dev, 0);
+        if (irq < 0) {
+                dev_err(&dev->dev, "Found HC with no IRQ\n");
+                return -ENODEV;
+        }
+
+        /* Get our Memory Handle */
+        res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+        if (!res) {
+                dev_err(&dev->dev, "MMIO Handle incorrect!\n");
+                return -ENODEV;
+        }
+
+        hcd = usb_create_hcd(driver, &dev->dev, "XLS");
+        if (!hcd) {
+                retval = -ENOMEM;
+                goto err1;
+        }
+        hcd->rsrc_start = res->start;
+        hcd->rsrc_len = res->end - res->start + 1;
+
+        if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
+                        driver->description)) {
+                dev_dbg(&dev->dev, "Controller already in use\n");
+                retval = -EBUSY;
+                goto err2;
+        }
+
+        hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
+        if (hcd->regs == NULL) {
+                dev_dbg(&dev->dev, "error mapping memory\n");
+                retval = -EFAULT;
+                goto err3;
+        }
+
+        retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+        if (retval != 0)
+                goto err4;
+        return retval;
+
+err4:
+        iounmap(hcd->regs);
+err3:
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err2:
+        usb_put_hcd(hcd);
+err1:
+        dev_err(&dev->dev, "init fail, %d\n", retval);
+        return retval;
+}
+
+static int ohci_xls_reset(struct usb_hcd *hcd)
+{
+        struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+
+        ohci_hcd_init(ohci);
+        return ohci_init(ohci);
+}
+
+static int __devinit ohci_xls_start(struct usb_hcd *hcd)
+{
+        struct ohci_hcd *ohci;
+        int ret;
+
+        ohci = hcd_to_ohci(hcd);
+        ret = ohci_run(ohci);
+        if (ret < 0) {
+                err("can't start %s", hcd->self.bus_name);
+                ohci_stop(hcd);
+                return ret;
+        }
+        return 0;
+}
+
+static struct hc_driver ohci_xls_hc_driver = {
+        .description    = hcd_name,
+        .product_desc   = "XLS OHCI Host Controller",
+        .hcd_priv_size  = sizeof(struct ohci_hcd),
+        .irq            = ohci_irq,
+        .flags          = HCD_MEMORY | HCD_USB11,
+        .reset          = ohci_xls_reset,
+        .start          = ohci_xls_start,
+        .stop           = ohci_stop,
+        .shutdown       = ohci_shutdown,
+        .urb_enqueue    = ohci_urb_enqueue,
+        .urb_dequeue    = ohci_urb_dequeue,
+        .endpoint_disable = ohci_endpoint_disable,
+        .get_frame_number = ohci_get_frame,
+        .hub_status_data = ohci_hub_status_data,
+        .hub_control    = ohci_hub_control,
+#ifdef CONFIG_PM
+        .bus_suspend    = ohci_bus_suspend,
+        .bus_resume     = ohci_bus_resume,
+#endif
+        .start_port_reset = ohci_start_port_reset,
+};
+
+static int ohci_xls_probe(struct platform_device *dev)
+{
+        int ret;
+
+        pr_debug("In ohci_xls_probe");
+        if (usb_disabled())
+                return -ENODEV;
+        ret = ohci_xls_probe_internal(&ohci_xls_hc_driver, dev);
+        return ret;
+}
+
+static int ohci_xls_remove(struct platform_device *dev)
+{
+        struct usb_hcd *hcd = platform_get_drvdata(dev);
+
+        usb_remove_hcd(hcd);
+        iounmap(hcd->regs);
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+        usb_put_hcd(hcd);
+        return 0;
+}
+
+static struct platform_driver ohci_xls_driver = {
+        .probe          = ohci_xls_probe,
+        .remove         = ohci_xls_remove,
+        .shutdown       = usb_hcd_platform_shutdown,
+        .driver         = {
+                .name   = "ohci-xls-0",
+                .owner  = THIS_MODULE,
+        },
+};
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 40a0d8b03ad7..e84ca1928dbf 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -959,7 +959,7 @@ static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
         info.pipenum = get_empty_pipenum(r8a66597, ep);
         info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
         info.epnum = usb_endpoint_num(ep);
-        info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
+        info.maxpacket = usb_endpoint_maxp(ep);
         info.type = get_r8a66597_type(usb_endpoint_type(ep));
         info.bufnum = get_bufnum(info.pipenum);
         info.buf_bsize = get_buf_bsize(info.pipenum);
@@ -2519,7 +2519,7 @@ static int __devinit r8a66597_probe(struct platform_device *pdev)
         hcd->rsrc_start = res->start;
         hcd->has_tt = 1;
 
-        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger);
+        ret = usb_add_hcd(hcd, irq, irq_trigger);
         if (ret != 0) {
                 dev_err(&pdev->dev, "Failed to add hcd\n");
                 goto clean_up3;
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 1a996245ab98..961d6638d8f9 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -1729,7 +1729,7 @@ sl811h_probe(struct platform_device *dev)
          * Use resource IRQ flags if set by platform device setup.
          */
         irqflags |= IRQF_SHARED;
-        retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | irqflags);
+        retval = usb_add_hcd(hcd, irq, irqflags);
         if (retval != 0)
                 goto err6;
 
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
index fba99b120588..c8ae199cfbb8 100644
--- a/drivers/usb/host/uhci-hcd.c
+++ b/drivers/usb/host/uhci-hcd.c
@@ -294,50 +294,50 @@ __acquires(uhci->lock)
          * and that remote wakeups should be enabled.
          */
         egsm_enable = USBCMD_EGSM;
-        uhci->RD_enable = 1;
         int_enable = USBINTR_RESUME;
         wakeup_enable = 1;
 
-        /* In auto-stop mode wakeups must always be detected, but
-         * Resume-Detect interrupts may be prohibited.  (In the absence
-         * of CONFIG_PM, they are always disallowed.)
+        /*
+         * In auto-stop mode, we must be able to detect new connections.
+         * The user can force us to poll by disabling remote wakeup;
+         * otherwise we will use the EGSM/RD mechanism.
          */
         if (auto_stop) {
                 if (!device_may_wakeup(&rhdev->dev))
-                        int_enable = 0;
+                        egsm_enable = int_enable = 0;
+        }
 
-        /* In bus-suspend mode wakeups may be disabled, but if they are
-         * allowed then so are Resume-Detect interrupts.
-         */
-        } else {
 #ifdef CONFIG_PM
+        /*
+         * In bus-suspend mode, we use the wakeup setting specified
+         * for the root hub.
+         */
+        else {
                 if (!rhdev->do_remote_wakeup)
                         wakeup_enable = 0;
-#endif
         }
+#endif
 
-        /* EGSM causes the root hub to echo a 'K' signal (resume) out any
-         * port which requests a remote wakeup.  According to the USB spec,
-         * every hub is supposed to do this.  But if we are ignoring
-         * remote-wakeup requests anyway then there's no point to it.
-         * We also shouldn't enable EGSM if it's broken.
-         */
-        if (!wakeup_enable || global_suspend_mode_is_broken(uhci))
-                egsm_enable = 0;
-
-        /* If we're ignoring wakeup events then there's no reason to
-         * enable Resume-Detect interrupts.  We also shouldn't enable
-         * them if they are broken or disallowed.
+        /*
+         * UHCI doesn't distinguish between wakeup requests from downstream
+         * devices and local connect/disconnect events.  There's no way to
+         * enable one without the other; both are controlled by EGSM.  Thus
+         * if wakeups are disallowed then EGSM must be turned off -- in which
+         * case remote wakeup requests from downstream during system sleep
+         * will be lost.
+         *
+         * In addition, if EGSM is broken then we can't use it.  Likewise,
+         * if Resume-Detect interrupts are broken then we can't use them.
          *
-         * This logic may lead us to enabling RD but not EGSM.  The UHCI
-         * spec foolishly says that RD works only when EGSM is on, but
-         * there's no harm in enabling it anyway -- perhaps some chips
-         * will implement it!
+         * Finally, neither EGSM nor RD is useful by itself.  Without EGSM,
+         * the RD status bit will never get set.  Without RD, the controller
+         * won't generate interrupts to tell the system about wakeup events.
          */
-        if (!wakeup_enable || resume_detect_interrupts_are_broken(uhci) ||
-                        !int_enable)
-                uhci->RD_enable = int_enable = 0;
+        if (!wakeup_enable || global_suspend_mode_is_broken(uhci) ||
+                        resume_detect_interrupts_are_broken(uhci))
+                egsm_enable = int_enable = 0;
 
+        uhci->RD_enable = !!int_enable;
         uhci_writew(uhci, int_enable, USBINTR);
         uhci_writew(uhci, egsm_enable | USBCMD_CF, USBCMD);
         mb();
@@ -364,10 +364,12 @@ __acquires(uhci->lock)
         uhci->rh_state = new_state;
         uhci->is_stopped = UHCI_IS_STOPPED;
 
-        /* If interrupts don't work and remote wakeup is enabled then
-         * the suspended root hub needs to be polled.
+        /*
+         * If remote wakeup is enabled but either EGSM or RD interrupts
+         * doesn't work, then we won't get an interrupt when a wakeup event
+         * occurs.  Thus the suspended root hub needs to be polled.
          */
-        if (!int_enable && wakeup_enable)
+        if (wakeup_enable && (!int_enable || !egsm_enable))
                 set_bit(HCD_FLAG_POLL_RH, &uhci_to_hcd(uhci)->flags);
         else
                 clear_bit(HCD_FLAG_POLL_RH, &uhci_to_hcd(uhci)->flags);
diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c
index 84ed28b34f93..f6ca80ee4cec 100644
--- a/drivers/usb/host/uhci-q.c
+++ b/drivers/usb/host/uhci-q.c
@@ -280,7 +280,7 @@ static struct uhci_qh *uhci_alloc_qh(struct uhci_hcd *uhci,
                         qh->load = usb_calc_bus_time(udev->speed,
                                         usb_endpoint_dir_in(&hep->desc),
                                         qh->type == USB_ENDPOINT_XFER_ISOC,
-                                        le16_to_cpu(hep->desc.wMaxPacketSize))
+                                        usb_endpoint_maxp(&hep->desc))
                                 / 1000 + 1;
 
         } else {                /* Skeleton QH */
@@ -792,7 +792,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
 {
         struct uhci_td *td;
         unsigned long destination, status;
-        int maxsze = le16_to_cpu(qh->hep->desc.wMaxPacketSize);
+        int maxsze = usb_endpoint_maxp(&qh->hep->desc);
         int len = urb->transfer_buffer_length;
         dma_addr_t data = urb->transfer_dma;
         __hc32 *plink;
@@ -918,7 +918,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
 {
         struct uhci_td *td;
         unsigned long destination, status;
-        int maxsze = le16_to_cpu(qh->hep->desc.wMaxPacketSize);
+        int maxsze = usb_endpoint_maxp(&qh->hep->desc);
         int len = urb->transfer_buffer_length;
         int this_sg_len;
         dma_addr_t data;
diff --git a/drivers/usb/host/xhci-ext-caps.h b/drivers/usb/host/xhci-ext-caps.h
index ce5c9e51748e..c7f33123d4c0 100644
--- a/drivers/usb/host/xhci-ext-caps.h
+++ b/drivers/usb/host/xhci-ext-caps.h
@@ -65,6 +65,12 @@
 /* bits 1:2, 5:12, and 17:19 need to be preserved; bits 21:28 should be zero */
 #define XHCI_LEGACY_DISABLE_SMI         ((0x3 << 1) + (0xff << 5) + (0x7 << 17))
 
+/* USB 2.0 xHCI 0.96 L1C capability - section 7.2.2.1.3.2 */
+#define XHCI_L1C               (1 << 16)
+
+/* USB 2.0 xHCI 1.0 hardware LMP capability - section 7.2.2.1.3.2 */
+#define XHCI_HLC               (1 << 19)
+
 /* command register values to disable interrupts and halt the HC */
 /* start/stop HC execution - do not write unless HC is halted*/
 #define XHCI_CMD_RUN            (1 << 0)
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 723f8231193d..431efe72b1f7 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -28,6 +28,25 @@
 #define PORT_RWC_BITS   (PORT_CSC | PORT_PEC | PORT_WRC | PORT_OCC | \
                          PORT_RC | PORT_PLC | PORT_PE)
 
+/* usb 1.1 root hub device descriptor */
+static u8 usb_bos_descriptor [] = {
+        USB_DT_BOS_SIZE,                /*  __u8 bLength, 5 bytes */
+        USB_DT_BOS,                     /*  __u8 bDescriptorType */
+        0x0F, 0x00,                     /*  __le16 wTotalLength, 15 bytes */
+        0x1,                            /*  __u8 bNumDeviceCaps */
+        /* First device capability */
+        USB_DT_USB_SS_CAP_SIZE,         /*  __u8 bLength, 10 bytes */
+        USB_DT_DEVICE_CAPABILITY,       /* Device Capability */
+        USB_SS_CAP_TYPE,                /* bDevCapabilityType, SUPERSPEED_USB */
+        0x00,                           /* bmAttributes, LTM off by default */
+        USB_5GBPS_OPERATION, 0x00,      /* wSpeedsSupported, 5Gbps only */
+        0x03,                           /* bFunctionalitySupport,
+                                           USB 3.0 speed only */
+        0x00,                           /* bU1DevExitLat, set later. */
+        0x00, 0x00                      /* __le16 bU2DevExitLat, set later. */
+};
+
+
 static void xhci_common_hub_descriptor(struct xhci_hcd *xhci,
                 struct usb_hub_descriptor *desc, int ports)
 {
@@ -232,7 +251,7 @@ int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci,
                         continue;
                 speed = xhci->devs[i]->udev->speed;
                 if (((speed == USB_SPEED_SUPER) == (hcd->speed == HCD_USB3))
-                                && xhci->devs[i]->port == port) {
+                                && xhci->devs[i]->fake_port == port) {
                         slot_id = i;
                         break;
                 }
@@ -392,13 +411,39 @@ static int xhci_get_ports(struct usb_hcd *hcd, __le32 __iomem ***port_array)
         return max_ports;
 }
 
+void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array,
+                                int port_id, u32 link_state)
+{
+        u32 temp;
+
+        temp = xhci_readl(xhci, port_array[port_id]);
+        temp = xhci_port_state_to_neutral(temp);
+        temp &= ~PORT_PLS_MASK;
+        temp |= PORT_LINK_STROBE | link_state;
+        xhci_writel(xhci, temp, port_array[port_id]);
+}
+
+/* Test and clear port RWC bit */
+void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array,
+                                int port_id, u32 port_bit)
+{
+        u32 temp;
+
+        temp = xhci_readl(xhci, port_array[port_id]);
+        if (temp & port_bit) {
+                temp = xhci_port_state_to_neutral(temp);
+                temp |= port_bit;
+                xhci_writel(xhci, temp, port_array[port_id]);
+        }
+}
+
 int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
                 u16 wIndex, char *buf, u16 wLength)
 {
         struct xhci_hcd *xhci = hcd_to_xhci(hcd);
         int max_ports;
         unsigned long flags;
-        u32 temp, temp1, status;
+        u32 temp, status;
         int retval = 0;
         __le32 __iomem **port_array;
         int slot_id;
@@ -429,6 +474,21 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
                 xhci_hub_descriptor(hcd, xhci,
                                 (struct usb_hub_descriptor *) buf);
                 break;
+        case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
+                if ((wValue & 0xff00) != (USB_DT_BOS << 8))
+                        goto error;
+
+                if (hcd->speed != HCD_USB3)
+                        goto error;
+
+                memcpy(buf, &usb_bos_descriptor,
+                                USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE);
+                temp = xhci_readl(xhci, &xhci->cap_regs->hcs_params3);
+                buf[12] = HCS_U1_LATENCY(temp);
+                put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]);
+
+                spin_unlock_irqrestore(&xhci->lock, flags);
+                return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE;
         case GetPortStatus:
                 if (!wIndex || wIndex > max_ports)
                         goto error;
@@ -472,11 +532,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
                                 xhci_dbg(xhci, "Resume USB2 port %d\n",
                                         wIndex + 1);
                                 bus_state->resume_done[wIndex] = 0;
-                                temp1 = xhci_port_state_to_neutral(temp);
-                                temp1 &= ~PORT_PLS_MASK;
-                                temp1 |= PORT_LINK_STROBE | XDEV_U0;
-                                xhci_writel(xhci, temp1, port_array[wIndex]);
-
+                                xhci_set_link_state(xhci, port_array, wIndex,
+                                                        XDEV_U0);
                                 xhci_dbg(xhci, "set port %d resume\n",
                                         wIndex + 1);
                                 slot_id = xhci_find_slot_id_by_port(hcd, xhci,
@@ -551,10 +608,19 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
                 switch (wValue) {
                 case USB_PORT_FEAT_SUSPEND:
                         temp = xhci_readl(xhci, port_array[wIndex]);
+                        if ((temp & PORT_PLS_MASK) != XDEV_U0) {
+                                /* Resume the port to U0 first */
+                                xhci_set_link_state(xhci, port_array, wIndex,
+                                                        XDEV_U0);
+                                spin_unlock_irqrestore(&xhci->lock, flags);
+                                msleep(10);
+                                spin_lock_irqsave(&xhci->lock, flags);
+                        }
                         /* In spec software should not attempt to suspend
                          * a port unless the port reports that it is in the
                          * enabled (PED = ‘1’,PLS < ‘3’) state.
                          */
+                        temp = xhci_readl(xhci, port_array[wIndex]);
                         if ((temp & PORT_PE) == 0 || (temp & PORT_RESET)
                                 || (temp & PORT_PLS_MASK) >= XDEV_U3) {
                                 xhci_warn(xhci, "USB core suspending device "
@@ -573,10 +639,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
                         xhci_stop_device(xhci, slot_id, 1);
                         spin_lock_irqsave(&xhci->lock, flags);
 
-                        temp = xhci_port_state_to_neutral(temp);
-                        temp &= ~PORT_PLS_MASK;
-                        temp |= PORT_LINK_STROBE | XDEV_U3;
-                        xhci_writel(xhci, temp, port_array[wIndex]);
+                        xhci_set_link_state(xhci, port_array, wIndex, XDEV_U3);
 
                         spin_unlock_irqrestore(&xhci->lock, flags);
                         msleep(10); /* wait device to enter */
@@ -610,10 +673,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
                                 }
                         }
 
-                        temp = xhci_port_state_to_neutral(temp);
-                        temp &= ~PORT_PLS_MASK;
-                        temp |= PORT_LINK_STROBE | link_state;
-                        xhci_writel(xhci, temp, port_array[wIndex]);
+                        xhci_set_link_state(xhci, port_array, wIndex,
+                                                link_state);
 
                         spin_unlock_irqrestore(&xhci->lock, flags);
                         msleep(20); /* wait device to enter */
@@ -677,24 +738,13 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
                                 if ((temp & PORT_PE) == 0)
                                         goto error;
 
-                                temp = xhci_port_state_to_neutral(temp);
-                                temp &= ~PORT_PLS_MASK;
-                                temp |= PORT_LINK_STROBE | XDEV_RESUME;
-                                xhci_writel(xhci, temp,
-                                                port_array[wIndex]);
-
-                                spin_unlock_irqrestore(&xhci->lock,
-                                                       flags);
+                                xhci_set_link_state(xhci, port_array, wIndex,
+                                                        XDEV_RESUME);
+                                spin_unlock_irqrestore(&xhci->lock, flags);
                                 msleep(20);
                                 spin_lock_irqsave(&xhci->lock, flags);
-
-                                temp = xhci_readl(xhci,
-                                                port_array[wIndex]);
-                                temp = xhci_port_state_to_neutral(temp);
-                                temp &= ~PORT_PLS_MASK;
-                                temp |= PORT_LINK_STROBE | XDEV_U0;
-                                xhci_writel(xhci, temp,
-                                                port_array[wIndex]);
+                                xhci_set_link_state(xhci, port_array, wIndex,
+                                                        XDEV_U0);
                         }
                         bus_state->port_c_suspend |= 1 << wIndex;
 
@@ -910,25 +960,18 @@ int xhci_bus_resume(struct usb_hcd *hcd)
                 if (test_bit(port_index, &bus_state->bus_suspended) &&
                     (temp & PORT_PLS_MASK)) {
                         if (DEV_SUPERSPEED(temp)) {
-                                temp = xhci_port_state_to_neutral(temp);
-                                temp &= ~PORT_PLS_MASK;
-                                temp |= PORT_LINK_STROBE | XDEV_U0;
-                                xhci_writel(xhci, temp, port_array[port_index]);
+                                xhci_set_link_state(xhci, port_array,
+                                                        port_index, XDEV_U0);
                         } else {
-                                temp = xhci_port_state_to_neutral(temp);
-                                temp &= ~PORT_PLS_MASK;
-                                temp |= PORT_LINK_STROBE | XDEV_RESUME;
-                                xhci_writel(xhci, temp, port_array[port_index]);
+                                xhci_set_link_state(xhci, port_array,
+                                                port_index, XDEV_RESUME);
 
                                 spin_unlock_irqrestore(&xhci->lock, flags);
                                 msleep(20);
                                 spin_lock_irqsave(&xhci->lock, flags);
 
-                                temp = xhci_readl(xhci, port_array[port_index]);
-                                temp = xhci_port_state_to_neutral(temp);
-                                temp &= ~PORT_PLS_MASK;
-                                temp |= PORT_LINK_STROBE | XDEV_U0;
-                                xhci_writel(xhci, temp, port_array[port_index]);
+                                xhci_set_link_state(xhci, port_array,
+                                                        port_index, XDEV_U0);
                         }
                         /* wait for the port to enter U0 and report port link
                          * state change.
@@ -938,12 +981,8 @@ int xhci_bus_resume(struct usb_hcd *hcd)
                         spin_lock_irqsave(&xhci->lock, flags);
 
                         /* Clear PLC */
-                        temp = xhci_readl(xhci, port_array[port_index]);
-                        if (temp & PORT_PLC) {
-                                temp = xhci_port_state_to_neutral(temp);
-                                temp |= PORT_PLC;
-                                xhci_writel(xhci, temp, port_array[port_index]);
-                        }
+                        xhci_test_and_clear_bit(xhci, port_array, port_index,
+                                                PORT_PLC);
 
                         slot_id = xhci_find_slot_id_by_port(hcd,
                                         xhci, port_index + 1);
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index d446886b22b0..42a22b8e6922 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -61,8 +61,6 @@ static struct xhci_segment *xhci_segment_alloc(struct xhci_hcd *xhci, gfp_t flag
 
 static void xhci_segment_free(struct xhci_hcd *xhci, struct xhci_segment *seg)
 {
-        if (!seg)
-                return;
         if (seg->trbs) {
                 xhci_dbg(xhci, "Freeing DMA segment at %p (virtual) 0x%llx (DMA)\n",
                                 seg->trbs, (unsigned long long)seg->dma);
@@ -81,7 +79,7 @@ static void xhci_segment_free(struct xhci_hcd *xhci, struct xhci_segment *seg)
  * related flags, such as End TRB, Toggle Cycle, and no snoop.
  */
 static void xhci_link_segments(struct xhci_hcd *xhci, struct xhci_segment *prev,
-                struct xhci_segment *next, bool link_trbs)
+                struct xhci_segment *next, bool link_trbs, bool isoc)
 {
         u32 val;
 
@@ -97,7 +95,9 @@ static void xhci_link_segments(struct xhci_hcd *xhci, struct xhci_segment *prev,
                 val &= ~TRB_TYPE_BITMASK;
                 val |= TRB_TYPE(TRB_LINK);
                 /* Always set the chain bit with 0.95 hardware */
-                if (xhci_link_trb_quirk(xhci))
+                /* Set chain bit for isoc rings on AMD 0.96 host */
+                if (xhci_link_trb_quirk(xhci) ||
+                                (isoc && (xhci->quirks & XHCI_AMD_0x96_HOST)))
                         val |= TRB_CHAIN;
                 prev->trbs[TRBS_PER_SEGMENT-1].link.control = cpu_to_le32(val);
         }
@@ -112,18 +112,20 @@ void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring)
         struct xhci_segment *seg;
         struct xhci_segment *first_seg;
 
-        if (!ring || !ring->first_seg)
+        if (!ring)
                 return;
-        first_seg = ring->first_seg;
-        seg = first_seg->next;
-        xhci_dbg(xhci, "Freeing ring at %p\n", ring);
-        while (seg != first_seg) {
-                struct xhci_segment *next = seg->next;
-                xhci_segment_free(xhci, seg);
-                seg = next;
+        if (ring->first_seg) {
+                first_seg = ring->first_seg;
+                seg = first_seg->next;
+                xhci_dbg(xhci, "Freeing ring at %p\n", ring);
+                while (seg != first_seg) {
+                        struct xhci_segment *next = seg->next;
+                        xhci_segment_free(xhci, seg);
+                        seg = next;
+                }
+                xhci_segment_free(xhci, first_seg);
+                ring->first_seg = NULL;
         }
-        xhci_segment_free(xhci, first_seg);
-        ring->first_seg = NULL;
         kfree(ring);
 }
 
@@ -152,7 +154,7 @@ static void xhci_initialize_ring_info(struct xhci_ring *ring)
  * See section 4.9.1 and figures 15 and 16.
  */
 static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci,
-                unsigned int num_segs, bool link_trbs, gfp_t flags)
+                unsigned int num_segs, bool link_trbs, bool isoc, gfp_t flags)
 {
         struct xhci_ring        *ring;
         struct xhci_segment     *prev;
@@ -178,12 +180,12 @@ static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci,
                 next = xhci_segment_alloc(xhci, flags);
                 if (!next)
                         goto fail;
-                xhci_link_segments(xhci, prev, next, link_trbs);
+                xhci_link_segments(xhci, prev, next, link_trbs, isoc);
 
                 prev = next;
                 num_segs--;
         }
-        xhci_link_segments(xhci, prev, ring->first_seg, link_trbs);
+        xhci_link_segments(xhci, prev, ring->first_seg, link_trbs, isoc);
 
         if (link_trbs) {
                 /* See section 4.9.2.1 and 6.4.4.1 */
@@ -229,14 +231,14 @@ void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci,
  * pointers to the beginning of the ring.
  */
 static void xhci_reinit_cached_ring(struct xhci_hcd *xhci,
-                struct xhci_ring *ring)
+                struct xhci_ring *ring, bool isoc)
 {
         struct xhci_segment     *seg = ring->first_seg;
         do {
                 memset(seg->trbs, 0,
                                 sizeof(union xhci_trb)*TRBS_PER_SEGMENT);
                 /* All endpoint rings have link TRBs */
-                xhci_link_segments(xhci, seg, seg->next, 1);
+                xhci_link_segments(xhci, seg, seg->next, 1, isoc);
                 seg = seg->next;
         } while (seg != ring->first_seg);
         xhci_initialize_ring_info(ring);
@@ -315,7 +317,7 @@ static void xhci_free_stream_ctx(struct xhci_hcd *xhci,
         struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller);
 
         if (num_stream_ctxs > MEDIUM_STREAM_ARRAY_SIZE)
-                pci_free_consistent(pdev,
+                dma_free_coherent(&pdev->dev,
                                 sizeof(struct xhci_stream_ctx)*num_stream_ctxs,
                                 stream_ctx, dma);
         else if (num_stream_ctxs <= SMALL_STREAM_ARRAY_SIZE)
@@ -343,9 +345,9 @@ static struct xhci_stream_ctx *xhci_alloc_stream_ctx(struct xhci_hcd *xhci,
         struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller);
 
         if (num_stream_ctxs > MEDIUM_STREAM_ARRAY_SIZE)
-                return pci_alloc_consistent(pdev,
+                return dma_alloc_coherent(&pdev->dev,
                                 sizeof(struct xhci_stream_ctx)*num_stream_ctxs,
-                                dma);
+                                dma, mem_flags);
         else if (num_stream_ctxs <= SMALL_STREAM_ARRAY_SIZE)
                 return dma_pool_alloc(xhci->small_streams_pool,
                                 mem_flags, dma);
@@ -540,7 +542,7 @@ struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci,
          */
         for (cur_stream = 1; cur_stream < num_streams; cur_stream++) {
                 stream_info->stream_rings[cur_stream] =
-                        xhci_ring_alloc(xhci, 1, true, mem_flags);
+                        xhci_ring_alloc(xhci, 1, true, false, mem_flags);
                 cur_ring = stream_info->stream_rings[cur_stream];
                 if (!cur_ring)
                         goto cleanup_rings;
@@ -687,11 +689,103 @@ static void xhci_init_endpoint_timer(struct xhci_hcd *xhci,
         ep->xhci = xhci;
 }
 
-/* All the xhci_tds in the ring's TD list should be freed at this point */
+static void xhci_free_tt_info(struct xhci_hcd *xhci,
+                struct xhci_virt_device *virt_dev,
+                int slot_id)
+{
+        struct list_head *tt;
+        struct list_head *tt_list_head;
+        struct list_head *tt_next;
+        struct xhci_tt_bw_info *tt_info;
+
+        /* If the device never made it past the Set Address stage,
+         * it may not have the real_port set correctly.
+         */
+        if (virt_dev->real_port == 0 ||
+                        virt_dev->real_port > HCS_MAX_PORTS(xhci->hcs_params1)) {
+                xhci_dbg(xhci, "Bad real port.\n");
+                return;
+        }
+
+        tt_list_head = &(xhci->rh_bw[virt_dev->real_port - 1].tts);
+        if (list_empty(tt_list_head))
+                return;
+
+        list_for_each(tt, tt_list_head) {
+                tt_info = list_entry(tt, struct xhci_tt_bw_info, tt_list);
+                if (tt_info->slot_id == slot_id)
+                        break;
+        }
+        /* Cautionary measure in case the hub was disconnected before we
+         * stored the TT information.
+         */
+        if (tt_info->slot_id != slot_id)
+                return;
+
+        tt_next = tt->next;
+        tt_info = list_entry(tt, struct xhci_tt_bw_info,
+                        tt_list);
+        /* Multi-TT hubs will have more than one entry */
+        do {
+                list_del(tt);
+                kfree(tt_info);
+                tt = tt_next;
+                if (list_empty(tt_list_head))
+                        break;
+                tt_next = tt->next;
+                tt_info = list_entry(tt, struct xhci_tt_bw_info,
+                                tt_list);
+        } while (tt_info->slot_id == slot_id);
+}
+
+int xhci_alloc_tt_info(struct xhci_hcd *xhci,
+                struct xhci_virt_device *virt_dev,
+                struct usb_device *hdev,
+                struct usb_tt *tt, gfp_t mem_flags)
+{
+        struct xhci_tt_bw_info          *tt_info;
+        unsigned int                    num_ports;
+        int                             i, j;
+
+        if (!tt->multi)
+                num_ports = 1;
+        else
+                num_ports = hdev->maxchild;
+
+        for (i = 0; i < num_ports; i++, tt_info++) {
+                struct xhci_interval_bw_table *bw_table;
+
+                tt_info = kzalloc(sizeof(*tt_info), mem_flags);
+                if (!tt_info)
+                        goto free_tts;
+                INIT_LIST_HEAD(&tt_info->tt_list);
+                list_add(&tt_info->tt_list,
+                                &xhci->rh_bw[virt_dev->real_port - 1].tts);
+                tt_info->slot_id = virt_dev->udev->slot_id;
+                if (tt->multi)
+                        tt_info->ttport = i+1;
+                bw_table = &tt_info->bw_table;
+                for (j = 0; j < XHCI_MAX_INTERVAL; j++)
+                        INIT_LIST_HEAD(&bw_table->interval_bw[j].endpoints);
+        }
+        return 0;
+
+free_tts:
+        xhci_free_tt_info(xhci, virt_dev, virt_dev->udev->slot_id);
+        return -ENOMEM;
+}
+
+
+/* All the xhci_tds in the ring's TD list should be freed at this point.
+ * Should be called with xhci->lock held if there is any chance the TT lists
+ * will be manipulated by the configure endpoint, allocate device, or update
+ * hub functions while this function is removing the TT entries from the list.
+ */
 void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id)
 {
         struct xhci_virt_device *dev;
         int i;
+        int old_active_eps = 0;
 
         /* Slot ID 0 is reserved */
         if (slot_id == 0 || !xhci->devs[slot_id])
@@ -702,13 +796,29 @@ void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id)
         if (!dev)
                 return;
 
+        if (dev->tt_info)
+                old_active_eps = dev->tt_info->active_eps;
+
         for (i = 0; i < 31; ++i) {
                 if (dev->eps[i].ring)
                         xhci_ring_free(xhci, dev->eps[i].ring);
                 if (dev->eps[i].stream_info)
                         xhci_free_stream_info(xhci,
                                         dev->eps[i].stream_info);
+                /* Endpoints on the TT/root port lists should have been removed
+                 * when usb_disable_device() was called for the device.
+                 * We can't drop them anyway, because the udev might have gone
+                 * away by this point, and we can't tell what speed it was.
+                 */
+                if (!list_empty(&dev->eps[i].bw_endpoint_list))
+                        xhci_warn(xhci, "Slot %u endpoint %u "
+                                        "not removed from BW list!\n",
+                                        slot_id, i);
         }
+        /* If this is a hub, free the TT(s) from the TT list */
+        xhci_free_tt_info(xhci, dev, slot_id);
+        /* If necessary, update the number of active TTs on this root port */
+        xhci_update_tt_active_eps(xhci, dev, old_active_eps);
 
         if (dev->ring_cache) {
                 for (i = 0; i < dev->num_rings_cached; i++)
@@ -762,10 +872,11 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,
         for (i = 0; i < 31; i++) {
                 xhci_init_endpoint_timer(xhci, &dev->eps[i]);
                 INIT_LIST_HEAD(&dev->eps[i].cancelled_td_list);
+                INIT_LIST_HEAD(&dev->eps[i].bw_endpoint_list);
         }
 
         /* Allocate endpoint 0 ring */
-        dev->eps[0].ring = xhci_ring_alloc(xhci, 1, true, flags);
+        dev->eps[0].ring = xhci_ring_alloc(xhci, 1, true, false, flags);
         if (!dev->eps[0].ring)
                 goto fail;
 
@@ -921,9 +1032,40 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
         for (top_dev = udev; top_dev->parent && top_dev->parent->parent;
                         top_dev = top_dev->parent)
                 /* Found device below root hub */;
-        dev->port = top_dev->portnum;
+        dev->fake_port = top_dev->portnum;
+        dev->real_port = port_num;
         xhci_dbg(xhci, "Set root hub portnum to %d\n", port_num);
-        xhci_dbg(xhci, "Set fake root hub portnum to %d\n", dev->port);
+        xhci_dbg(xhci, "Set fake root hub portnum to %d\n", dev->fake_port);
+
+        /* Find the right bandwidth table that this device will be a part of.
+         * If this is a full speed device attached directly to a root port (or a
+         * decendent of one), it counts as a primary bandwidth domain, not a
+         * secondary bandwidth domain under a TT.  An xhci_tt_info structure
+         * will never be created for the HS root hub.
+         */
+        if (!udev->tt || !udev->tt->hub->parent) {
+                dev->bw_table = &xhci->rh_bw[port_num - 1].bw_table;
+        } else {
+                struct xhci_root_port_bw_info *rh_bw;
+                struct xhci_tt_bw_info *tt_bw;
+
+                rh_bw = &xhci->rh_bw[port_num - 1];
+                /* Find the right TT. */
+                list_for_each_entry(tt_bw, &rh_bw->tts, tt_list) {
+                        if (tt_bw->slot_id != udev->tt->hub->slot_id)
+                                continue;
+
+                        if (!dev->udev->tt->multi ||
+                                        (udev->tt->multi &&
+                                         tt_bw->ttport == dev->udev->ttport)) {
+                                dev->bw_table = &tt_bw->bw_table;
+                                dev->tt_info = tt_bw;
+                                break;
+                        }
+                }
+                if (!dev->tt_info)
+                        xhci_warn(xhci, "WARN: Didn't find a matching TT\n");
+        }
 
         /* Is this a LS/FS device under an external HS hub? */
         if (udev->tt && udev->tt->hub->parent) {
@@ -1141,8 +1283,8 @@ static u32 xhci_get_max_esit_payload(struct xhci_hcd *xhci,
         if (udev->speed == USB_SPEED_SUPER)
                 return le16_to_cpu(ep->ss_ep_comp.wBytesPerInterval);
 
-        max_packet = GET_MAX_PACKET(le16_to_cpu(ep->desc.wMaxPacketSize));
-        max_burst = (le16_to_cpu(ep->desc.wMaxPacketSize) & 0x1800) >> 11;
+        max_packet = GET_MAX_PACKET(usb_endpoint_maxp(&ep->desc));
+        max_burst = (usb_endpoint_maxp(&ep->desc) & 0x1800) >> 11;
         /* A 0 in max burst means 1 transfer per ESIT */
         return max_packet * (max_burst + 1);
 }
@@ -1175,10 +1317,10 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
          */
         if (usb_endpoint_xfer_isoc(&ep->desc))
                 virt_dev->eps[ep_index].new_ring =
-                        xhci_ring_alloc(xhci, 8, true, mem_flags);
+                        xhci_ring_alloc(xhci, 8, true, true, mem_flags);
         else
                 virt_dev->eps[ep_index].new_ring =
-                        xhci_ring_alloc(xhci, 1, true, mem_flags);
+                        xhci_ring_alloc(xhci, 1, true, false, mem_flags);
         if (!virt_dev->eps[ep_index].new_ring) {
                 /* Attempt to use the ring cache */
                 if (virt_dev->num_rings_cached == 0)
@@ -1187,7 +1329,8 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
                         virt_dev->ring_cache[virt_dev->num_rings_cached];
                 virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL;
                 virt_dev->num_rings_cached--;
-                xhci_reinit_cached_ring(xhci, virt_dev->eps[ep_index].new_ring);
+                xhci_reinit_cached_ring(xhci, virt_dev->eps[ep_index].new_ring,
+                        usb_endpoint_xfer_isoc(&ep->desc) ? true : false);
         }
         virt_dev->eps[ep_index].skip = false;
         ep_ring = virt_dev->eps[ep_index].new_ring;
@@ -1211,7 +1354,7 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
         /* Set the max packet size and max burst */
         switch (udev->speed) {
         case USB_SPEED_SUPER:
-                max_packet = le16_to_cpu(ep->desc.wMaxPacketSize);
+                max_packet = usb_endpoint_maxp(&ep->desc);
                 ep_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(max_packet));
                 /* dig out max burst from ep companion desc */
                 max_packet = ep->ss_ep_comp.bMaxBurst;
@@ -1223,14 +1366,14 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
                  */
                 if (usb_endpoint_xfer_isoc(&ep->desc) ||
                                 usb_endpoint_xfer_int(&ep->desc)) {
-                        max_burst = (le16_to_cpu(ep->desc.wMaxPacketSize)
+                        max_burst = (usb_endpoint_maxp(&ep->desc)
                                      & 0x1800) >> 11;
                         ep_ctx->ep_info2 |= cpu_to_le32(MAX_BURST(max_burst));
                 }
                 /* Fall through */
         case USB_SPEED_FULL:
         case USB_SPEED_LOW:
-                max_packet = GET_MAX_PACKET(le16_to_cpu(ep->desc.wMaxPacketSize));
+                max_packet = GET_MAX_PACKET(usb_endpoint_maxp(&ep->desc));
                 ep_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(max_packet));
                 break;
         default:
@@ -1286,6 +1429,70 @@ void xhci_endpoint_zero(struct xhci_hcd *xhci,
          */
 }
 
+void xhci_clear_endpoint_bw_info(struct xhci_bw_info *bw_info)
+{
+        bw_info->ep_interval = 0;
+        bw_info->mult = 0;
+        bw_info->num_packets = 0;
+        bw_info->max_packet_size = 0;
+        bw_info->type = 0;
+        bw_info->max_esit_payload = 0;
+}
+
+void xhci_update_bw_info(struct xhci_hcd *xhci,
+                struct xhci_container_ctx *in_ctx,
+                struct xhci_input_control_ctx *ctrl_ctx,
+                struct xhci_virt_device *virt_dev)
+{
+        struct xhci_bw_info *bw_info;
+        struct xhci_ep_ctx *ep_ctx;
+        unsigned int ep_type;
+        int i;
+
+        for (i = 1; i < 31; ++i) {
+                bw_info = &virt_dev->eps[i].bw_info;
+
+                /* We can't tell what endpoint type is being dropped, but
+                 * unconditionally clearing the bandwidth info for non-periodic
+                 * endpoints should be harmless because the info will never be
+                 * set in the first place.
+                 */
+                if (!EP_IS_ADDED(ctrl_ctx, i) && EP_IS_DROPPED(ctrl_ctx, i)) {
+                        /* Dropped endpoint */
+                        xhci_clear_endpoint_bw_info(bw_info);
+                        continue;
+                }
+
+                if (EP_IS_ADDED(ctrl_ctx, i)) {
+                        ep_ctx = xhci_get_ep_ctx(xhci, in_ctx, i);
+                        ep_type = CTX_TO_EP_TYPE(le32_to_cpu(ep_ctx->ep_info2));
+
+                        /* Ignore non-periodic endpoints */
+                        if (ep_type != ISOC_OUT_EP && ep_type != INT_OUT_EP &&
+                                        ep_type != ISOC_IN_EP &&
+                                        ep_type != INT_IN_EP)
+                                continue;
+
+                        /* Added or changed endpoint */
+                        bw_info->ep_interval = CTX_TO_EP_INTERVAL(
+                                        le32_to_cpu(ep_ctx->ep_info));
+                        /* Number of packets and mult are zero-based in the
+                         * input context, but we want one-based for the
+                         * interval table.
+                         */
+                        bw_info->mult = CTX_TO_EP_MULT(
+                                        le32_to_cpu(ep_ctx->ep_info)) + 1;
+                        bw_info->num_packets = CTX_TO_MAX_BURST(
+                                        le32_to_cpu(ep_ctx->ep_info2)) + 1;
+                        bw_info->max_packet_size = MAX_PACKET_DECODED(
+                                        le32_to_cpu(ep_ctx->ep_info2));
+                        bw_info->type = ep_type;
+                        bw_info->max_esit_payload = CTX_TO_MAX_ESIT_PAYLOAD(
+                                        le32_to_cpu(ep_ctx->tx_info));
+                }
+        }
+}
+
 /* Copy output xhci_ep_ctx to the input xhci_ep_ctx copy.
  * Useful when you want to change one particular aspect of the endpoint and then
  * issue a configure endpoint command.
@@ -1344,10 +1551,9 @@ static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags)
         if (!xhci->scratchpad)
                 goto fail_sp;
 
-        xhci->scratchpad->sp_array =
-                pci_alloc_consistent(to_pci_dev(dev),
+        xhci->scratchpad->sp_array = dma_alloc_coherent(dev,
                                      num_sp * sizeof(u64),
-                                     &xhci->scratchpad->sp_dma);
+                                     &xhci->scratchpad->sp_dma, flags);
         if (!xhci->scratchpad->sp_array)
                 goto fail_sp2;
 
@@ -1364,8 +1570,8 @@ static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags)
         xhci->dcbaa->dev_context_ptrs[0] = cpu_to_le64(xhci->scratchpad->sp_dma);
         for (i = 0; i < num_sp; i++) {
                 dma_addr_t dma;
-                void *buf = pci_alloc_consistent(to_pci_dev(dev),
-                                                 xhci->page_size, &dma);
+                void *buf = dma_alloc_coherent(dev, xhci->page_size, &dma,
+                                flags);
                 if (!buf)
                         goto fail_sp5;
 
@@ -1378,7 +1584,7 @@ static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags)
 
  fail_sp5:
         for (i = i - 1; i >= 0; i--) {
-                pci_free_consistent(to_pci_dev(dev), xhci->page_size,
+                dma_free_coherent(dev, xhci->page_size,
                                     xhci->scratchpad->sp_buffers[i],
                                     xhci->scratchpad->sp_dma_buffers[i]);
         }
@@ -1388,7 +1594,7 @@ static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags)
         kfree(xhci->scratchpad->sp_buffers);
 
  fail_sp3:
-        pci_free_consistent(to_pci_dev(dev), num_sp * sizeof(u64),
+        dma_free_coherent(dev, num_sp * sizeof(u64),
                             xhci->scratchpad->sp_array,
                             xhci->scratchpad->sp_dma);
 
@@ -1412,13 +1618,13 @@ static void scratchpad_free(struct xhci_hcd *xhci)
         num_sp = HCS_MAX_SCRATCHPAD(xhci->hcs_params2);
 
         for (i = 0; i < num_sp; i++) {
-                pci_free_consistent(pdev, xhci->page_size,
+                dma_free_coherent(&pdev->dev, xhci->page_size,
                                     xhci->scratchpad->sp_buffers[i],
                                     xhci->scratchpad->sp_dma_buffers[i]);
         }
         kfree(xhci->scratchpad->sp_dma_buffers);
         kfree(xhci->scratchpad->sp_buffers);
-        pci_free_consistent(pdev, num_sp * sizeof(u64),
+        dma_free_coherent(&pdev->dev, num_sp * sizeof(u64),
                             xhci->scratchpad->sp_array,
                             xhci->scratchpad->sp_dma);
         kfree(xhci->scratchpad);
@@ -1463,18 +1669,10 @@ struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci,
 
 void xhci_urb_free_priv(struct xhci_hcd *xhci, struct urb_priv *urb_priv)
 {
-        int last;
-
-        if (!urb_priv)
-                return;
-
-        last = urb_priv->length - 1;
-        if (last >= 0) {
-                int     i;
-                for (i = 0; i <= last; i++)
-                        kfree(urb_priv->td[i]);
+        if (urb_priv) {
+                kfree(urb_priv->td[0]);
+                kfree(urb_priv);
         }
-        kfree(urb_priv);
 }
 
 void xhci_free_command(struct xhci_hcd *xhci,
@@ -1489,6 +1687,8 @@ void xhci_free_command(struct xhci_hcd *xhci,
 void xhci_mem_cleanup(struct xhci_hcd *xhci)
 {
         struct pci_dev  *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller);
+        struct dev_info *dev_info, *next;
+        unsigned long   flags;
         int size;
         int i;
 
@@ -1500,7 +1700,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
         }
         size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries);
         if (xhci->erst.entries)
-                pci_free_consistent(pdev, size,
+                dma_free_coherent(&pdev->dev, size,
                                 xhci->erst.entries, xhci->erst.erst_dma_addr);
         xhci->erst.entries = NULL;
         xhci_dbg(xhci, "Freed ERST\n");
@@ -1540,17 +1740,25 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
 
         xhci_write_64(xhci, 0, &xhci->op_regs->dcbaa_ptr);
         if (xhci->dcbaa)
-                pci_free_consistent(pdev, sizeof(*xhci->dcbaa),
+                dma_free_coherent(&pdev->dev, sizeof(*xhci->dcbaa),
                                 xhci->dcbaa, xhci->dcbaa->dma);
         xhci->dcbaa = NULL;
 
         scratchpad_free(xhci);
 
+        spin_lock_irqsave(&xhci->lock, flags);
+        list_for_each_entry_safe(dev_info, next, &xhci->lpm_failed_devs, list) {
+                list_del(&dev_info->list);
+                kfree(dev_info);
+        }
+        spin_unlock_irqrestore(&xhci->lock, flags);
+
         xhci->num_usb2_ports = 0;
         xhci->num_usb3_ports = 0;
         kfree(xhci->usb2_ports);
         kfree(xhci->usb3_ports);
         kfree(xhci->port_array);
+        kfree(xhci->rh_bw);
 
         xhci->page_size = 0;
         xhci->page_shift = 0;
@@ -1762,6 +1970,23 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports,
         if (port_offset == 0 || (port_offset + port_count - 1) > num_ports)
                 /* WTF? "Valid values are ‘1’ to MaxPorts" */
                 return;
+
+        /* Check the host's USB2 LPM capability */
+        if ((xhci->hci_version == 0x96) && (major_revision != 0x03) &&
+                        (temp & XHCI_L1C)) {
+                xhci_dbg(xhci, "xHCI 0.96: support USB2 software lpm\n");
+                xhci->sw_lpm_support = 1;
+        }
+
+        if ((xhci->hci_version >= 0x100) && (major_revision != 0x03)) {
+                xhci_dbg(xhci, "xHCI 1.0: support USB2 software lpm\n");
+                xhci->sw_lpm_support = 1;
+                if (temp & XHCI_HLC) {
+                        xhci_dbg(xhci, "xHCI 1.0: support USB2 hardware lpm\n");
+                        xhci->hw_lpm_support = 1;
+                }
+        }
+
         port_offset--;
         for (i = port_offset; i < (port_offset + port_count); i++) {
                 /* Duplicate entry.  Ignore the port if the revisions differ. */
@@ -1806,7 +2031,7 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags)
         __le32 __iomem *addr;
         u32 offset;
         unsigned int num_ports;
-        int i, port_index;
+        int i, j, port_index;
 
         addr = &xhci->cap_regs->hcc_params;
         offset = XHCI_HCC_EXT_CAPS(xhci_readl(xhci, addr));
@@ -1821,6 +2046,18 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags)
         if (!xhci->port_array)
                 return -ENOMEM;
 
+        xhci->rh_bw = kzalloc(sizeof(*xhci->rh_bw)*num_ports, flags);
+        if (!xhci->rh_bw)
+                return -ENOMEM;
+        for (i = 0; i < num_ports; i++) {
+                struct xhci_interval_bw_table *bw_table;
+
+                INIT_LIST_HEAD(&xhci->rh_bw[i].tts);
+                bw_table = &xhci->rh_bw[i].bw_table;
+                for (j = 0; j < XHCI_MAX_INTERVAL; j++)
+                        INIT_LIST_HEAD(&bw_table->interval_bw[j].endpoints);
+        }
+
         /*
          * For whatever reason, the first capability offset is from the
          * capability register base, not from the HCCPARAMS register.
@@ -1959,8 +2196,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
          * Section 5.4.8 - doorbell array must be
          * "physically contiguous and 64-byte (cache line) aligned".
          */
-        xhci->dcbaa = pci_alloc_consistent(to_pci_dev(dev),
-                        sizeof(*xhci->dcbaa), &dma);
+        xhci->dcbaa = dma_alloc_coherent(dev, sizeof(*xhci->dcbaa), &dma,
+                        GFP_KERNEL);
         if (!xhci->dcbaa)
                 goto fail;
         memset(xhci->dcbaa, 0, sizeof *(xhci->dcbaa));
@@ -1994,14 +2231,14 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
                 dma_pool_create("xHCI 1KB stream ctx arrays",
                         dev, MEDIUM_STREAM_ARRAY_SIZE, 16, 0);
         /* Any stream context array bigger than MEDIUM_STREAM_ARRAY_SIZE
-         * will be allocated with pci_alloc_consistent()
+         * will be allocated with dma_alloc_coherent()
          */
 
         if (!xhci->small_streams_pool || !xhci->medium_streams_pool)
                 goto fail;
 
         /* Set up the command ring to have one segments for now. */
-        xhci->cmd_ring = xhci_ring_alloc(xhci, 1, true, flags);
+        xhci->cmd_ring = xhci_ring_alloc(xhci, 1, true, false, flags);
         if (!xhci->cmd_ring)
                 goto fail;
         xhci_dbg(xhci, "Allocated command ring at %p\n", xhci->cmd_ring);
@@ -2032,14 +2269,16 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
          * the event ring segment table (ERST).  Section 4.9.3.
          */
         xhci_dbg(xhci, "// Allocating event ring\n");
-        xhci->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, false, flags);
+        xhci->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, false, false,
+                                                flags);
         if (!xhci->event_ring)
                 goto fail;
         if (xhci_check_trb_in_td_math(xhci, flags) < 0)
                 goto fail;
 
-        xhci->erst.entries = pci_alloc_consistent(to_pci_dev(dev),
-                        sizeof(struct xhci_erst_entry)*ERST_NUM_SEGS, &dma);
+        xhci->erst.entries = dma_alloc_coherent(dev,
+                        sizeof(struct xhci_erst_entry) * ERST_NUM_SEGS, &dma,
+                        GFP_KERNEL);
         if (!xhci->erst.entries)
                 goto fail;
         xhci_dbg(xhci, "// Allocated event ring segment table at 0x%llx\n",
@@ -2102,6 +2341,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
         if (xhci_setup_port_arrays(xhci, flags))
                 goto fail;
 
+        INIT_LIST_HEAD(&xhci->lpm_failed_devs);
+
         return 0;
 
 fail:
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index cb16de213f64..9f51f88cc0f5 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -51,61 +51,9 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev)
         return 0;
 }
 
-/* called during probe() after chip reset completes */
-static int xhci_pci_setup(struct usb_hcd *hcd)
+static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 {
-        struct xhci_hcd         *xhci;
-        struct pci_dev          *pdev = to_pci_dev(hcd->self.controller);
-        int                     retval;
-        u32                     temp;
-
-        hcd->self.sg_tablesize = TRBS_PER_SEGMENT - 2;
-
-        if (usb_hcd_is_primary_hcd(hcd)) {
-                xhci = kzalloc(sizeof(struct xhci_hcd), GFP_KERNEL);
-                if (!xhci)
-                        return -ENOMEM;
-                *((struct xhci_hcd **) hcd->hcd_priv) = xhci;
-                xhci->main_hcd = hcd;
-                /* Mark the first roothub as being USB 2.0.
-                 * The xHCI driver will register the USB 3.0 roothub.
-                 */
-                hcd->speed = HCD_USB2;
-                hcd->self.root_hub->speed = USB_SPEED_HIGH;
-                /*
-                 * USB 2.0 roothub under xHCI has an integrated TT,
-                 * (rate matching hub) as opposed to having an OHCI/UHCI
-                 * companion controller.
-                 */
-                hcd->has_tt = 1;
-        } else {
-                /* xHCI private pointer was set in xhci_pci_probe for the second
-                 * registered roothub.
-                 */
-                xhci = hcd_to_xhci(hcd);
-                temp = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
-                if (HCC_64BIT_ADDR(temp)) {
-                        xhci_dbg(xhci, "Enabling 64-bit DMA addresses.\n");
-                        dma_set_mask(hcd->self.controller, DMA_BIT_MASK(64));
-                } else {
-                        dma_set_mask(hcd->self.controller, DMA_BIT_MASK(32));
-                }
-                return 0;
-        }
-
-        xhci->cap_regs = hcd->regs;
-        xhci->op_regs = hcd->regs +
-                HC_LENGTH(xhci_readl(xhci, &xhci->cap_regs->hc_capbase));
-        xhci->run_regs = hcd->regs +
-                (xhci_readl(xhci, &xhci->cap_regs->run_regs_off) & RTSOFF_MASK);
-        /* Cache read-only capability registers */
-        xhci->hcs_params1 = xhci_readl(xhci, &xhci->cap_regs->hcs_params1);
-        xhci->hcs_params2 = xhci_readl(xhci, &xhci->cap_regs->hcs_params2);
-        xhci->hcs_params3 = xhci_readl(xhci, &xhci->cap_regs->hcs_params3);
-        xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hc_capbase);
-        xhci->hci_version = HC_VERSION(xhci->hcc_params);
-        xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
-        xhci_print_registers(xhci);
+        struct pci_dev          *pdev = to_pci_dev(dev);
 
         /* Look for vendor-specific quirks */
         if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
@@ -128,6 +76,9 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
         if (pdev->vendor == PCI_VENDOR_ID_NEC)
                 xhci->quirks |= XHCI_NEC_HOST;
 
+        if (pdev->vendor == PCI_VENDOR_ID_AMD && xhci->hci_version == 0x96)
+                xhci->quirks |= XHCI_AMD_0x96_HOST;
+
         /* AMD PLL quirk */
         if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info())
                 xhci->quirks |= XHCI_AMD_PLL_FIX;
@@ -136,39 +87,29 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
                 xhci->quirks |= XHCI_SPURIOUS_SUCCESS;
                 xhci->quirks |= XHCI_EP_LIMIT_QUIRK;
                 xhci->limit_active_eps = 64;
+                xhci->quirks |= XHCI_SW_BW_CHECKING;
         }
         if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
                         pdev->device == PCI_DEVICE_ID_ASROCK_P67) {
                 xhci->quirks |= XHCI_RESET_ON_RESUME;
                 xhci_dbg(xhci, "QUIRK: Resetting on resume\n");
         }
+}
 
-        /* Make sure the HC is halted. */
-        retval = xhci_halt(xhci);
-        if (retval)
-                goto error;
+/* called during probe() after chip reset completes */
+static int xhci_pci_setup(struct usb_hcd *hcd)
+{
+        struct xhci_hcd         *xhci;
+        struct pci_dev          *pdev = to_pci_dev(hcd->self.controller);
+        int                     retval;
 
-        xhci_dbg(xhci, "Resetting HCD\n");
-        /* Reset the internal HC memory state and registers. */
-        retval = xhci_reset(xhci);
+        retval = xhci_gen_setup(hcd, xhci_pci_quirks);
         if (retval)
-                goto error;
-        xhci_dbg(xhci, "Reset complete\n");
-
-        temp = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
-        if (HCC_64BIT_ADDR(temp)) {
-                xhci_dbg(xhci, "Enabling 64-bit DMA addresses.\n");
-                dma_set_mask(hcd->self.controller, DMA_BIT_MASK(64));
-        } else {
-                dma_set_mask(hcd->self.controller, DMA_BIT_MASK(32));
-        }
+                return retval;
 
-        xhci_dbg(xhci, "Calling HCD init\n");
-        /* Initialize HCD and host controller data structures. */
-        retval = xhci_init(hcd);
-        if (retval)
-                goto error;
-        xhci_dbg(xhci, "Called HCD init\n");
+        xhci = hcd_to_xhci(hcd);
+        if (!usb_hcd_is_primary_hcd(hcd))
+                return 0;
 
         pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn);
         xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn);
@@ -178,7 +119,6 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
         if (!retval)
                 return retval;
 
-error:
         kfree(xhci);
         return retval;
 }
@@ -222,7 +162,7 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
         *((struct xhci_hcd **) xhci->shared_hcd->hcd_priv) = xhci;
 
         retval = usb_add_hcd(xhci->shared_hcd, dev->irq,
-                        IRQF_DISABLED | IRQF_SHARED);
+                        IRQF_SHARED);
         if (retval)
                 goto put_usb3_hcd;
         /* Roothub already marked as USB 3.0 speed */
@@ -344,6 +284,11 @@ static const struct hc_driver xhci_pci_hc_driver = {
         .hub_status_data =      xhci_hub_status_data,
         .bus_suspend =          xhci_bus_suspend,
         .bus_resume =           xhci_bus_resume,
+        /*
+         * call back when device connected and addressed
+         */
+        .update_device =        xhci_update_device,
+        .set_usb2_hw_lpm =      xhci_set_usb2_hardware_lpm,
 };
 
 /*-------------------------------------------------------------------------*/
@@ -375,12 +320,12 @@ static struct pci_driver xhci_pci_driver = {
 #endif
 };
 
-int xhci_register_pci(void)
+int __init xhci_register_pci(void)
 {
         return pci_register_driver(&xhci_pci_driver);
 }
 
-void xhci_unregister_pci(void)
+void __exit xhci_unregister_pci(void)
 {
         pci_unregister_driver(&xhci_pci_driver);
 }
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 952e2ded61af..940321b3ec68 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -185,7 +185,7 @@ static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring, bool consumer
  *                      prepare_transfer()?
  */
 static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring,
-                bool consumer, bool more_trbs_coming)
+                bool consumer, bool more_trbs_coming, bool isoc)
 {
         u32 chain;
         union xhci_trb *next;
@@ -212,11 +212,13 @@ static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring,
                                 if (!chain && !more_trbs_coming)
                                         break;
 
-                                /* If we're not dealing with 0.95 hardware,
+                                /* If we're not dealing with 0.95 hardware or
+                                 * isoc rings on AMD 0.96 host,
                                  * carry over the chain bit of the previous TRB
                                  * (which may mean the chain bit is cleared).
                                  */
-                                if (!xhci_link_trb_quirk(xhci)) {
+                                if (!(isoc && (xhci->quirks & XHCI_AMD_0x96_HOST))
+                                                && !xhci_link_trb_quirk(xhci)) {
                                         next->link.control &=
                                                 cpu_to_le32(~TRB_CHAIN);
                                         next->link.control |=
@@ -1329,10 +1331,8 @@ static void handle_port_status(struct xhci_hcd *xhci,
 
                 if (DEV_SUPERSPEED(temp)) {
                         xhci_dbg(xhci, "resume SS port %d\n", port_id);
-                        temp = xhci_port_state_to_neutral(temp);
-                        temp &= ~PORT_PLS_MASK;
-                        temp |= PORT_LINK_STROBE | XDEV_U0;
-                        xhci_writel(xhci, temp, port_array[faked_port_index]);
+                        xhci_set_link_state(xhci, port_array, faked_port_index,
+                                                XDEV_U0);
                         slot_id = xhci_find_slot_id_by_port(hcd, xhci,
                                         faked_port_index);
                         if (!slot_id) {
@@ -1342,10 +1342,8 @@ static void handle_port_status(struct xhci_hcd *xhci,
                         xhci_ring_device(xhci, slot_id);
                         xhci_dbg(xhci, "resume SS port %d finished\n", port_id);
                         /* Clear PORT_PLC */
-                        temp = xhci_readl(xhci, port_array[faked_port_index]);
-                        temp = xhci_port_state_to_neutral(temp);
-                        temp |= PORT_PLC;
-                        xhci_writel(xhci, temp, port_array[faked_port_index]);
+                        xhci_test_and_clear_bit(xhci, port_array,
+                                                faked_port_index, PORT_PLC);
                 } else {
                         xhci_dbg(xhci, "resume HS port %d\n", port_id);
                         bus_state->resume_done[faked_port_index] = jiffies +
@@ -1356,6 +1354,10 @@ static void handle_port_status(struct xhci_hcd *xhci,
                 }
         }
 
+        if (hcd->speed != HCD_USB3)
+                xhci_test_and_clear_bit(xhci, port_array, faked_port_index,
+                                        PORT_PLC);
+
 cleanup:
         /* Update event ring dequeue pointer before dropping the lock */
         inc_deq(xhci, xhci->event_ring, true);
@@ -2192,7 +2194,8 @@ cleanup:
                         if ((urb->actual_length != urb->transfer_buffer_length &&
                                                 (urb->transfer_flags &
                                                  URB_SHORT_NOT_OK)) ||
-                                        status != 0)
+                                        (status != 0 &&
+                                         !usb_endpoint_xfer_isoc(&urb->ep->desc)))
                                 xhci_dbg(xhci, "Giveback URB %p, len = %d, "
                                                 "expected = %x, status = %d\n",
                                                 urb, urb->actual_length,
@@ -2409,7 +2412,7 @@ irqreturn_t xhci_msi_irq(int irq, struct usb_hcd *hcd)
  *                      prepare_transfer()?
  */
 static void queue_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
-                bool consumer, bool more_trbs_coming,
+                bool consumer, bool more_trbs_coming, bool isoc,
                 u32 field1, u32 field2, u32 field3, u32 field4)
 {
         struct xhci_generic_trb *trb;
@@ -2419,7 +2422,7 @@ static void queue_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
         trb->field[1] = cpu_to_le32(field2);
         trb->field[2] = cpu_to_le32(field3);
         trb->field[3] = cpu_to_le32(field4);
-        inc_enq(xhci, ring, consumer, more_trbs_coming);
+        inc_enq(xhci, ring, consumer, more_trbs_coming, isoc);
 }
 
 /*
@@ -2427,7 +2430,7 @@ static void queue_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
  * FIXME allocate segments if the ring is full.
  */
 static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring,
-                u32 ep_state, unsigned int num_trbs, gfp_t mem_flags)
+                u32 ep_state, unsigned int num_trbs, bool isoc, gfp_t mem_flags)
 {
         /* Make sure the endpoint has been added to xHC schedule */
         switch (ep_state) {
@@ -2469,10 +2472,11 @@ static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring,
                 next = ring->enqueue;
 
                 while (last_trb(xhci, ring, ring->enq_seg, next)) {
-                        /* If we're not dealing with 0.95 hardware,
-                         * clear the chain bit.
+                        /* If we're not dealing with 0.95 hardware or isoc rings
+                         * on AMD 0.96 host, clear the chain bit.
                          */
-                        if (!xhci_link_trb_quirk(xhci))
+                        if (!xhci_link_trb_quirk(xhci) && !(isoc &&
+                                        (xhci->quirks & XHCI_AMD_0x96_HOST)))
                                 next->link.control &= cpu_to_le32(~TRB_CHAIN);
                         else
                                 next->link.control |= cpu_to_le32(TRB_CHAIN);
@@ -2505,6 +2509,7 @@ static int prepare_transfer(struct xhci_hcd *xhci,
                 unsigned int num_trbs,
                 struct urb *urb,
                 unsigned int td_index,
+                bool isoc,
                 gfp_t mem_flags)
 {
         int ret;
@@ -2522,7 +2527,7 @@ static int prepare_transfer(struct xhci_hcd *xhci,
 
         ret = prepare_ring(xhci, ep_ring,
                            le32_to_cpu(ep_ctx->ep_info) & EP_STATE_MASK,
-                           num_trbs, mem_flags);
+                           num_trbs, isoc, mem_flags);
         if (ret)
                 return ret;
 
@@ -2711,7 +2716,7 @@ static u32 xhci_v1_0_td_remainder(int running_total, int trb_buff_len,
          * running_total.
          */
         packets_transferred = (running_total + trb_buff_len) /
-                le16_to_cpu(urb->ep->desc.wMaxPacketSize);
+                usb_endpoint_maxp(&urb->ep->desc);
 
         return xhci_td_remainder(total_packet_count - packets_transferred);
 }
@@ -2741,11 +2746,11 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
         num_trbs = count_sg_trbs_needed(xhci, urb);
         num_sgs = urb->num_sgs;
         total_packet_count = roundup(urb->transfer_buffer_length,
-                        le16_to_cpu(urb->ep->desc.wMaxPacketSize));
+                        usb_endpoint_maxp(&urb->ep->desc));
 
         trb_buff_len = prepare_transfer(xhci, xhci->devs[slot_id],
                         ep_index, urb->stream_id,
-                        num_trbs, urb, 0, mem_flags);
+                        num_trbs, urb, 0, false, mem_flags);
         if (trb_buff_len < 0)
                 return trb_buff_len;
 
@@ -2840,7 +2845,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
                         more_trbs_coming = true;
                 else
                         more_trbs_coming = false;
-                queue_trb(xhci, ep_ring, false, more_trbs_coming,
+                queue_trb(xhci, ep_ring, false, more_trbs_coming, false,
                                 lower_32_bits(addr),
                                 upper_32_bits(addr),
                                 length_field,
@@ -2931,7 +2936,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 
         ret = prepare_transfer(xhci, xhci->devs[slot_id],
                         ep_index, urb->stream_id,
-                        num_trbs, urb, 0, mem_flags);
+                        num_trbs, urb, 0, false, mem_flags);
         if (ret < 0)
                 return ret;
 
@@ -2948,7 +2953,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 
         running_total = 0;
         total_packet_count = roundup(urb->transfer_buffer_length,
-                        le16_to_cpu(urb->ep->desc.wMaxPacketSize));
+                        usb_endpoint_maxp(&urb->ep->desc));
         /* How much data is in the first TRB? */
         addr = (u64) urb->transfer_dma;
         trb_buff_len = TRB_MAX_BUFF_SIZE -
@@ -3003,7 +3008,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
                         more_trbs_coming = true;
                 else
                         more_trbs_coming = false;
-                queue_trb(xhci, ep_ring, false, more_trbs_coming,
+                queue_trb(xhci, ep_ring, false, more_trbs_coming, false,
                                 lower_32_bits(addr),
                                 upper_32_bits(addr),
                                 length_field,
@@ -3063,7 +3068,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
                 num_trbs++;
         ret = prepare_transfer(xhci, xhci->devs[slot_id],
                         ep_index, urb->stream_id,
-                        num_trbs, urb, 0, mem_flags);
+                        num_trbs, urb, 0, false, mem_flags);
         if (ret < 0)
                 return ret;
 
@@ -3096,7 +3101,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
                 }
         }
 
-        queue_trb(xhci, ep_ring, false, true,
+        queue_trb(xhci, ep_ring, false, true, false,
                   setup->bRequestType | setup->bRequest << 8 | le16_to_cpu(setup->wValue) << 16,
                   le16_to_cpu(setup->wIndex) | le16_to_cpu(setup->wLength) << 16,
                   TRB_LEN(8) | TRB_INTR_TARGET(0),
@@ -3116,7 +3121,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
         if (urb->transfer_buffer_length > 0) {
                 if (setup->bRequestType & USB_DIR_IN)
                         field |= TRB_DIR_IN;
-                queue_trb(xhci, ep_ring, false, true,
+                queue_trb(xhci, ep_ring, false, true, false,
                                 lower_32_bits(urb->transfer_dma),
                                 upper_32_bits(urb->transfer_dma),
                                 length_field,
@@ -3132,7 +3137,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
                 field = 0;
         else
                 field = TRB_DIR_IN;
-        queue_trb(xhci, ep_ring, false, false,
+        queue_trb(xhci, ep_ring, false, false, false,
                         0,
                         0,
                         TRB_INTR_TARGET(0),
@@ -3269,7 +3274,7 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
                 td_len = urb->iso_frame_desc[i].length;
                 td_remain_len = td_len;
                 total_packet_count = roundup(td_len,
-                                le16_to_cpu(urb->ep->desc.wMaxPacketSize));
+                                usb_endpoint_maxp(&urb->ep->desc));
                 /* A zero-length transfer still involves at least one packet. */
                 if (total_packet_count == 0)
                         total_packet_count++;
@@ -3281,7 +3286,8 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
                 trbs_per_td = count_isoc_trbs_needed(xhci, urb, i);
 
                 ret = prepare_transfer(xhci, xhci->devs[slot_id], ep_index,
-                                urb->stream_id, trbs_per_td, urb, i, mem_flags);
+                                urb->stream_id, trbs_per_td, urb, i, true,
+                                mem_flags);
                 if (ret < 0) {
                         if (i == 0)
                                 return ret;
@@ -3351,7 +3357,7 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
                                 remainder |
                                 TRB_INTR_TARGET(0);
 
-                        queue_trb(xhci, ep_ring, false, more_trbs_coming,
+                        queue_trb(xhci, ep_ring, false, more_trbs_coming, true,
                                 lower_32_bits(addr),
                                 upper_32_bits(addr),
                                 length_field,
@@ -3433,7 +3439,7 @@ int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags,
          * Do not insert any td of the urb to the ring if the check failed.
          */
         ret = prepare_ring(xhci, ep_ring, le32_to_cpu(ep_ctx->ep_info) & EP_STATE_MASK,
-                           num_trbs, mem_flags);
+                           num_trbs, true, mem_flags);
         if (ret)
                 return ret;
 
@@ -3492,7 +3498,7 @@ static int queue_command(struct xhci_hcd *xhci, u32 field1, u32 field2,
                 reserved_trbs++;
 
         ret = prepare_ring(xhci, xhci->cmd_ring, EP_STATE_RUNNING,
-                        reserved_trbs, GFP_ATOMIC);
+                        reserved_trbs, false, GFP_ATOMIC);
         if (ret < 0) {
                 xhci_err(xhci, "ERR: No room for command on command ring\n");
                 if (command_must_succeed)
@@ -3500,8 +3506,8 @@ static int queue_command(struct xhci_hcd *xhci, u32 field1, u32 field2,
                                         "unfailable commands failed.\n");
                 return ret;
         }
-        queue_trb(xhci, xhci->cmd_ring, false, false, field1, field2, field3,
-                        field4 | xhci->cmd_ring->cycle_state);
+        queue_trb(xhci, xhci->cmd_ring, false, false, false, field1, field2,
+                        field3, field4 | xhci->cmd_ring->cycle_state);
         return 0;
 }
 
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 3a0f695138f4..1ff95a0df576 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -175,28 +175,19 @@ int xhci_reset(struct xhci_hcd *xhci)
         return handshake(xhci, &xhci->op_regs->status, STS_CNR, 0, 250 * 1000);
 }
 
-/*
- * Free IRQs
- * free all IRQs request
- */
-static void xhci_free_irq(struct xhci_hcd *xhci)
+#ifdef CONFIG_PCI
+static int xhci_free_msi(struct xhci_hcd *xhci)
 {
         int i;
-        struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller);
 
-        /* return if using legacy interrupt */
-        if (xhci_to_hcd(xhci)->irq >= 0)
-                return;
-
-        if (xhci->msix_entries) {
-                for (i = 0; i < xhci->msix_count; i++)
-                        if (xhci->msix_entries[i].vector)
-                                free_irq(xhci->msix_entries[i].vector,
-                                                xhci_to_hcd(xhci));
-        } else if (pdev->irq >= 0)
-                free_irq(pdev->irq, xhci_to_hcd(xhci));
+        if (!xhci->msix_entries)
+                return -EINVAL;
 
-        return;
+        for (i = 0; i < xhci->msix_count; i++)
+                if (xhci->msix_entries[i].vector)
+                        free_irq(xhci->msix_entries[i].vector,
+                                        xhci_to_hcd(xhci));
+        return 0;
 }
 
 /*
@@ -224,6 +215,28 @@ static int xhci_setup_msi(struct xhci_hcd *xhci)
 }
 
 /*
+ * Free IRQs
+ * free all IRQs request
+ */
+static void xhci_free_irq(struct xhci_hcd *xhci)
+{
+        struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller);
+        int ret;
+
+        /* return if using legacy interrupt */
+        if (xhci_to_hcd(xhci)->irq >= 0)
+                return;
+
+        ret = xhci_free_msi(xhci);
+        if (!ret)
+                return;
+        if (pdev->irq >= 0)
+                free_irq(pdev->irq, xhci_to_hcd(xhci));
+
+        return;
+}
+
+/*
  * Set up MSI-X
  */
 static int xhci_setup_msix(struct xhci_hcd *xhci)
@@ -302,6 +315,72 @@ static void xhci_cleanup_msix(struct xhci_hcd *xhci)
         return;
 }
 
+static void xhci_msix_sync_irqs(struct xhci_hcd *xhci)
+{
+        int i;
+
+        if (xhci->msix_entries) {
+                for (i = 0; i < xhci->msix_count; i++)
+                        synchronize_irq(xhci->msix_entries[i].vector);
+        }
+}
+
+static int xhci_try_enable_msi(struct usb_hcd *hcd)
+{
+        struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+        struct pci_dev  *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller);
+        int ret;
+
+        /*
+         * Some Fresco Logic host controllers advertise MSI, but fail to
+         * generate interrupts.  Don't even try to enable MSI.
+         */
+        if (xhci->quirks & XHCI_BROKEN_MSI)
+                return 0;
+
+        /* unregister the legacy interrupt */
+        if (hcd->irq)
+                free_irq(hcd->irq, hcd);
+        hcd->irq = -1;
+
+        ret = xhci_setup_msix(xhci);
+        if (ret)
+                /* fall back to msi*/
+                ret = xhci_setup_msi(xhci);
+
+        if (!ret)
+                /* hcd->irq is -1, we have MSI */
+                return 0;
+
+        /* fall back to legacy interrupt*/
+        ret = request_irq(pdev->irq, &usb_hcd_irq, IRQF_SHARED,
+                        hcd->irq_descr, hcd);
+        if (ret) {
+                xhci_err(xhci, "request interrupt %d failed\n",
+                                pdev->irq);
+                return ret;
+        }
+        hcd->irq = pdev->irq;
+        return 0;
+}
+
+#else
+
+static int xhci_try_enable_msi(struct usb_hcd *hcd)
+{
+        return 0;
+}
+
+static void xhci_cleanup_msix(struct xhci_hcd *xhci)
+{
+}
+
+static void xhci_msix_sync_irqs(struct xhci_hcd *xhci)
+{
+}
+
+#endif
+
 /*
  * Initialize memory for HCD and xHC (one-time init).
  *
@@ -316,7 +395,7 @@ int xhci_init(struct usb_hcd *hcd)
 
         xhci_dbg(xhci, "xhci_init\n");
         spin_lock_init(&xhci->lock);
-        if (link_quirk) {
+        if (xhci->hci_version == 0x95 && link_quirk) {
                 xhci_dbg(xhci, "QUIRK: Not clearing Link TRB chain bits.\n");
                 xhci->quirks |= XHCI_LINK_TRB_QUIRK;
         } else {
@@ -413,9 +492,8 @@ int xhci_run(struct usb_hcd *hcd)
 {
         u32 temp;
         u64 temp_64;
-        u32 ret;
+        int ret;
         struct xhci_hcd *xhci = hcd_to_xhci(hcd);
-        struct pci_dev  *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller);
 
         /* Start the xHCI host controller running only after the USB 2.0 roothub
          * is setup.
@@ -426,34 +504,10 @@ int xhci_run(struct usb_hcd *hcd)
                 return xhci_run_finished(xhci);
 
         xhci_dbg(xhci, "xhci_run\n");
-        /* unregister the legacy interrupt */
-        if (hcd->irq)
-                free_irq(hcd->irq, hcd);
-        hcd->irq = -1;
-
-        /* Some Fresco Logic host controllers advertise MSI, but fail to
-         * generate interrupts.  Don't even try to enable MSI.
-         */
-        if (xhci->quirks & XHCI_BROKEN_MSI)
-                goto legacy_irq;
 
-        ret = xhci_setup_msix(xhci);
+        ret = xhci_try_enable_msi(hcd);
         if (ret)
-                /* fall back to msi*/
-                ret = xhci_setup_msi(xhci);
-
-        if (ret) {
-legacy_irq:
-                /* fall back to legacy interrupt*/
-                ret = request_irq(pdev->irq, &usb_hcd_irq, IRQF_SHARED,
-                                        hcd->irq_descr, hcd);
-                if (ret) {
-                        xhci_err(xhci, "request interrupt %d failed\n",
-                                        pdev->irq);
-                        return ret;
-                }
-                hcd->irq = pdev->irq;
-        }
+                return ret;
 
 #ifdef CONFIG_USB_XHCI_HCD_DEBUGGING
         init_timer(&xhci->event_ring_timer);
@@ -694,7 +748,6 @@ int xhci_suspend(struct xhci_hcd *xhci)
         int                     rc = 0;
         struct usb_hcd          *hcd = xhci_to_hcd(xhci);
         u32                     command;
-        int                     i;
 
         spin_lock_irq(&xhci->lock);
         clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
@@ -730,10 +783,7 @@ int xhci_suspend(struct xhci_hcd *xhci)
 
         /* step 5: remove core well power */
         /* synchronize irq when using MSI-X */
-        if (xhci->msix_entries) {
-                for (i = 0; i < xhci->msix_count; i++)
-                        synchronize_irq(xhci->msix_entries[i].vector);
-        }
+        xhci_msix_sync_irqs(xhci);
 
         return rc;
 }
@@ -945,8 +995,7 @@ static int xhci_check_args(struct usb_hcd *hcd, struct usb_device *udev,
                 return -ENODEV;
 
         if (check_virt_dev) {
-                if (!udev->slot_id || !xhci->devs
-                        || !xhci->devs[udev->slot_id]) {
+                if (!udev->slot_id || !xhci->devs[udev->slot_id]) {
                         printk(KERN_DEBUG "xHCI %s called with unaddressed "
                                                 "device\n", func);
                         return -EINVAL;
@@ -987,7 +1036,7 @@ static int xhci_check_maxpacket(struct xhci_hcd *xhci, unsigned int slot_id,
         out_ctx = xhci->devs[slot_id]->out_ctx;
         ep_ctx = xhci_get_ep_ctx(xhci, out_ctx, ep_index);
         hw_max_packet_size = MAX_PACKET_DECODED(le32_to_cpu(ep_ctx->ep_info2));
-        max_packet_size = le16_to_cpu(urb->dev->ep0.desc.wMaxPacketSize);
+        max_packet_size = usb_endpoint_maxp(&urb->dev->ep0.desc);
         if (hw_max_packet_size != max_packet_size) {
                 xhci_dbg(xhci, "Max Packet Size for ep 0 changed.\n");
                 xhci_dbg(xhci, "Max packet size in usb_device = %d\n",
@@ -1035,6 +1084,7 @@ static int xhci_check_maxpacket(struct xhci_hcd *xhci, unsigned int slot_id,
 int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags)
 {
         struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+        struct xhci_td *buffer;
         unsigned long flags;
         int ret = 0;
         unsigned int slot_id, ep_index;
@@ -1065,13 +1115,15 @@ int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags)
         if (!urb_priv)
                 return -ENOMEM;
 
+        buffer = kzalloc(size * sizeof(struct xhci_td), mem_flags);
+        if (!buffer) {
+                kfree(urb_priv);
+                return -ENOMEM;
+        }
+
         for (i = 0; i < size; i++) {
-                urb_priv->td[i] = kzalloc(sizeof(struct xhci_td), mem_flags);
-                if (!urb_priv->td[i]) {
-                        urb_priv->length = i;
-                        xhci_urb_free_priv(xhci, urb_priv);
-                        return -ENOMEM;
-                }
+                urb_priv->td[i] = buffer;
+                buffer++;
         }
 
         urb_priv->length = size;
@@ -1747,6 +1799,564 @@ static void xhci_finish_resource_reservation(struct xhci_hcd *xhci,
                                 xhci->num_active_eps);
 }
 
+unsigned int xhci_get_block_size(struct usb_device *udev)
+{
+        switch (udev->speed) {
+        case USB_SPEED_LOW:
+        case USB_SPEED_FULL:
+                return FS_BLOCK;
+        case USB_SPEED_HIGH:
+                return HS_BLOCK;
+        case USB_SPEED_SUPER:
+                return SS_BLOCK;
+        case USB_SPEED_UNKNOWN:
+        case USB_SPEED_WIRELESS:
+        default:
+                /* Should never happen */
+                return 1;
+        }
+}
+
+unsigned int xhci_get_largest_overhead(struct xhci_interval_bw *interval_bw)
+{
+        if (interval_bw->overhead[LS_OVERHEAD_TYPE])
+                return LS_OVERHEAD;
+        if (interval_bw->overhead[FS_OVERHEAD_TYPE])
+                return FS_OVERHEAD;
+        return HS_OVERHEAD;
+}
+
+/* If we are changing a LS/FS device under a HS hub,
+ * make sure (if we are activating a new TT) that the HS bus has enough
+ * bandwidth for this new TT.
+ */
+static int xhci_check_tt_bw_table(struct xhci_hcd *xhci,
+                struct xhci_virt_device *virt_dev,
+                int old_active_eps)
+{
+        struct xhci_interval_bw_table *bw_table;
+        struct xhci_tt_bw_info *tt_info;
+
+        /* Find the bandwidth table for the root port this TT is attached to. */
+        bw_table = &xhci->rh_bw[virt_dev->real_port - 1].bw_table;
+        tt_info = virt_dev->tt_info;
+        /* If this TT already had active endpoints, the bandwidth for this TT
+         * has already been added.  Removing all periodic endpoints (and thus
+         * making the TT enactive) will only decrease the bandwidth used.
+         */
+        if (old_active_eps)
+                return 0;
+        if (old_active_eps == 0 && tt_info->active_eps != 0) {
+                if (bw_table->bw_used + TT_HS_OVERHEAD > HS_BW_LIMIT)
+                        return -ENOMEM;
+                return 0;
+        }
+        /* Not sure why we would have no new active endpoints...
+         *
+         * Maybe because of an Evaluate Context change for a hub update or a
+         * control endpoint 0 max packet size change?
+         * FIXME: skip the bandwidth calculation in that case.
+         */
+        return 0;
+}
+
+static int xhci_check_ss_bw(struct xhci_hcd *xhci,
+                struct xhci_virt_device *virt_dev)
+{
+        unsigned int bw_reserved;
+
+        bw_reserved = DIV_ROUND_UP(SS_BW_RESERVED*SS_BW_LIMIT_IN, 100);
+        if (virt_dev->bw_table->ss_bw_in > (SS_BW_LIMIT_IN - bw_reserved))
+                return -ENOMEM;
+
+        bw_reserved = DIV_ROUND_UP(SS_BW_RESERVED*SS_BW_LIMIT_OUT, 100);
+        if (virt_dev->bw_table->ss_bw_out > (SS_BW_LIMIT_OUT - bw_reserved))
+                return -ENOMEM;
+
+        return 0;
+}
+
+/*
+ * This algorithm is a very conservative estimate of the worst-case scheduling
+ * scenario for any one interval.  The hardware dynamically schedules the
+ * packets, so we can't tell which microframe could be the limiting factor in
+ * the bandwidth scheduling.  This only takes into account periodic endpoints.
+ *
+ * Obviously, we can't solve an NP complete problem to find the minimum worst
+ * case scenario.  Instead, we come up with an estimate that is no less than
+ * the worst case bandwidth used for any one microframe, but may be an
+ * over-estimate.
+ *
+ * We walk the requirements for each endpoint by interval, starting with the
+ * smallest interval, and place packets in the schedule where there is only one
+ * possible way to schedule packets for that interval.  In order to simplify
+ * this algorithm, we record the largest max packet size for each interval, and
+ * assume all packets will be that size.
+ *
+ * For interval 0, we obviously must schedule all packets for each interval.
+ * The bandwidth for interval 0 is just the amount of data to be transmitted
+ * (the sum of all max ESIT payload sizes, plus any overhead per packet times
+ * the number of packets).
+ *
+ * For interval 1, we have two possible microframes to schedule those packets
+ * in.  For this algorithm, if we can schedule the same number of packets for
+ * each possible scheduling opportunity (each microframe), we will do so.  The
+ * remaining number of packets will be saved to be transmitted in the gaps in
+ * the next interval's scheduling sequence.
+ *
+ * As we move those remaining packets to be scheduled with interval 2 packets,
+ * we have to double the number of remaining packets to transmit.  This is
+ * because the intervals are actually powers of 2, and we would be transmitting
+ * the previous interval's packets twice in this interval.  We also have to be
+ * sure that when we look at the largest max packet size for this interval, we
+ * also look at the largest max packet size for the remaining packets and take
+ * the greater of the two.
+ *
+ * The algorithm continues to evenly distribute packets in each scheduling
+ * opportunity, and push the remaining packets out, until we get to the last
+ * interval.  Then those packets and their associated overhead are just added
+ * to the bandwidth used.
+ */
+static int xhci_check_bw_table(struct xhci_hcd *xhci,
+                struct xhci_virt_device *virt_dev,
+                int old_active_eps)
+{
+        unsigned int bw_reserved;
+        unsigned int max_bandwidth;
+        unsigned int bw_used;
+        unsigned int block_size;
+        struct xhci_interval_bw_table *bw_table;
+        unsigned int packet_size = 0;
+        unsigned int overhead = 0;
+        unsigned int packets_transmitted = 0;
+        unsigned int packets_remaining = 0;
+        unsigned int i;
+
+        if (virt_dev->udev->speed == USB_SPEED_SUPER)
+                return xhci_check_ss_bw(xhci, virt_dev);
+
+        if (virt_dev->udev->speed == USB_SPEED_HIGH) {
+                max_bandwidth = HS_BW_LIMIT;
+                /* Convert percent of bus BW reserved to blocks reserved */
+                bw_reserved = DIV_ROUND_UP(HS_BW_RESERVED * max_bandwidth, 100);
+        } else {
+                max_bandwidth = FS_BW_LIMIT;
+                bw_reserved = DIV_ROUND_UP(FS_BW_RESERVED * max_bandwidth, 100);
+        }
+
+        bw_table = virt_dev->bw_table;
+        /* We need to translate the max packet size and max ESIT payloads into
+         * the units the hardware uses.
+         */
+        block_size = xhci_get_block_size(virt_dev->udev);
+
+        /* If we are manipulating a LS/FS device under a HS hub, double check
+         * that the HS bus has enough bandwidth if we are activing a new TT.
+         */
+        if (virt_dev->tt_info) {
+                xhci_dbg(xhci, "Recalculating BW for rootport %u\n",
+                                virt_dev->real_port);
+                if (xhci_check_tt_bw_table(xhci, virt_dev, old_active_eps)) {
+                        xhci_warn(xhci, "Not enough bandwidth on HS bus for "
+                                        "newly activated TT.\n");
+                        return -ENOMEM;
+                }
+                xhci_dbg(xhci, "Recalculating BW for TT slot %u port %u\n",
+                                virt_dev->tt_info->slot_id,
+                                virt_dev->tt_info->ttport);
+        } else {
+                xhci_dbg(xhci, "Recalculating BW for rootport %u\n",
+                                virt_dev->real_port);
+        }
+
+        /* Add in how much bandwidth will be used for interval zero, or the
+         * rounded max ESIT payload + number of packets * largest overhead.
+         */
+        bw_used = DIV_ROUND_UP(bw_table->interval0_esit_payload, block_size) +
+                bw_table->interval_bw[0].num_packets *
+                xhci_get_largest_overhead(&bw_table->interval_bw[0]);
+
+        for (i = 1; i < XHCI_MAX_INTERVAL; i++) {
+                unsigned int bw_added;
+                unsigned int largest_mps;
+                unsigned int interval_overhead;
+
+                /*
+                 * How many packets could we transmit in this interval?
+                 * If packets didn't fit in the previous interval, we will need
+                 * to transmit that many packets twice within this interval.
+                 */
+                packets_remaining = 2 * packets_remaining +
+                        bw_table->interval_bw[i].num_packets;
+
+                /* Find the largest max packet size of this or the previous
+                 * interval.
+                 */
+                if (list_empty(&bw_table->interval_bw[i].endpoints))
+                        largest_mps = 0;
+                else {
+                        struct xhci_virt_ep *virt_ep;
+                        struct list_head *ep_entry;
+
+                        ep_entry = bw_table->interval_bw[i].endpoints.next;
+                        virt_ep = list_entry(ep_entry,
+                                        struct xhci_virt_ep, bw_endpoint_list);
+                        /* Convert to blocks, rounding up */
+                        largest_mps = DIV_ROUND_UP(
+                                        virt_ep->bw_info.max_packet_size,
+                                        block_size);
+                }
+                if (largest_mps > packet_size)
+                        packet_size = largest_mps;
+
+                /* Use the larger overhead of this or the previous interval. */
+                interval_overhead = xhci_get_largest_overhead(
+                                &bw_table->interval_bw[i]);
+                if (interval_overhead > overhead)
+                        overhead = interval_overhead;
+
+                /* How many packets can we evenly distribute across
+                 * (1 << (i + 1)) possible scheduling opportunities?
+                 */
+                packets_transmitted = packets_remaining >> (i + 1);
+
+                /* Add in the bandwidth used for those scheduled packets */
+                bw_added = packets_transmitted * (overhead + packet_size);
+
+                /* How many packets do we have remaining to transmit? */
+                packets_remaining = packets_remaining % (1 << (i + 1));
+
+                /* What largest max packet size should those packets have? */
+                /* If we've transmitted all packets, don't carry over the
+                 * largest packet size.
+                 */
+                if (packets_remaining == 0) {
+                        packet_size = 0;
+                        overhead = 0;
+                } else if (packets_transmitted > 0) {
+                        /* Otherwise if we do have remaining packets, and we've
+                         * scheduled some packets in this interval, take the
+                         * largest max packet size from endpoints with this
+                         * interval.
+                         */
+                        packet_size = largest_mps;
+                        overhead = interval_overhead;
+                }
+                /* Otherwise carry over packet_size and overhead from the last
+                 * time we had a remainder.
+                 */
+                bw_used += bw_added;
+                if (bw_used > max_bandwidth) {
+                        xhci_warn(xhci, "Not enough bandwidth. "
+                                        "Proposed: %u, Max: %u\n",
+                                bw_used, max_bandwidth);
+                        return -ENOMEM;
+                }
+        }
+        /*
+         * Ok, we know we have some packets left over after even-handedly
+         * scheduling interval 15.  We don't know which microframes they will
+         * fit into, so we over-schedule and say they will be scheduled every
+         * microframe.
+         */
+        if (packets_remaining > 0)
+                bw_used += overhead + packet_size;
+
+        if (!virt_dev->tt_info && virt_dev->udev->speed == USB_SPEED_HIGH) {
+                unsigned int port_index = virt_dev->real_port - 1;
+
+                /* OK, we're manipulating a HS device attached to a
+                 * root port bandwidth domain.  Include the number of active TTs
+                 * in the bandwidth used.
+                 */
+                bw_used += TT_HS_OVERHEAD *
+                        xhci->rh_bw[port_index].num_active_tts;
+        }
+
+        xhci_dbg(xhci, "Final bandwidth: %u, Limit: %u, Reserved: %u, "
+                "Available: %u " "percent\n",
+                bw_used, max_bandwidth, bw_reserved,
+                (max_bandwidth - bw_used - bw_reserved) * 100 /
+                max_bandwidth);
+
+        bw_used += bw_reserved;
+        if (bw_used > max_bandwidth) {
+                xhci_warn(xhci, "Not enough bandwidth. Proposed: %u, Max: %u\n",
+                                bw_used, max_bandwidth);
+                return -ENOMEM;
+        }
+
+        bw_table->bw_used = bw_used;
+        return 0;
+}
+
+static bool xhci_is_async_ep(unsigned int ep_type)
+{
+        return (ep_type != ISOC_OUT_EP && ep_type != INT_OUT_EP &&
+                                        ep_type != ISOC_IN_EP &&
+                                        ep_type != INT_IN_EP);
+}
+
+static bool xhci_is_sync_in_ep(unsigned int ep_type)
+{
+        return (ep_type == ISOC_IN_EP || ep_type != INT_IN_EP);
+}
+
+static unsigned int xhci_get_ss_bw_consumed(struct xhci_bw_info *ep_bw)
+{
+        unsigned int mps = DIV_ROUND_UP(ep_bw->max_packet_size, SS_BLOCK);
+
+        if (ep_bw->ep_interval == 0)
+                return SS_OVERHEAD_BURST +
+                        (ep_bw->mult * ep_bw->num_packets *
+                                        (SS_OVERHEAD + mps));
+        return DIV_ROUND_UP(ep_bw->mult * ep_bw->num_packets *
+                                (SS_OVERHEAD + mps + SS_OVERHEAD_BURST),
+                                1 << ep_bw->ep_interval);
+
+}
+
+void xhci_drop_ep_from_interval_table(struct xhci_hcd *xhci,
+                struct xhci_bw_info *ep_bw,
+                struct xhci_interval_bw_table *bw_table,
+                struct usb_device *udev,
+                struct xhci_virt_ep *virt_ep,
+                struct xhci_tt_bw_info *tt_info)
+{
+        struct xhci_interval_bw *interval_bw;
+        int normalized_interval;
+
+        if (xhci_is_async_ep(ep_bw->type))
+                return;
+
+        if (udev->speed == USB_SPEED_SUPER) {
+                if (xhci_is_sync_in_ep(ep_bw->type))
+                        xhci->devs[udev->slot_id]->bw_table->ss_bw_in -=
+                                xhci_get_ss_bw_consumed(ep_bw);
+                else
+                        xhci->devs[udev->slot_id]->bw_table->ss_bw_out -=
+                                xhci_get_ss_bw_consumed(ep_bw);
+                return;
+        }
+
+        /* SuperSpeed endpoints never get added to intervals in the table, so
+         * this check is only valid for HS/FS/LS devices.
+         */
+        if (list_empty(&virt_ep->bw_endpoint_list))
+                return;
+        /* For LS/FS devices, we need to translate the interval expressed in
+         * microframes to frames.
+         */
+        if (udev->speed == USB_SPEED_HIGH)
+                normalized_interval = ep_bw->ep_interval;
+        else
+                normalized_interval = ep_bw->ep_interval - 3;
+
+        if (normalized_interval == 0)
+                bw_table->interval0_esit_payload -= ep_bw->max_esit_payload;
+        interval_bw = &bw_table->interval_bw[normalized_interval];
+        interval_bw->num_packets -= ep_bw->num_packets;
+        switch (udev->speed) {
+        case USB_SPEED_LOW:
+                interval_bw->overhead[LS_OVERHEAD_TYPE] -= 1;
+                break;
+        case USB_SPEED_FULL:
+                interval_bw->overhead[FS_OVERHEAD_TYPE] -= 1;
+                break;
+        case USB_SPEED_HIGH:
+                interval_bw->overhead[HS_OVERHEAD_TYPE] -= 1;
+                break;
+        case USB_SPEED_SUPER:
+        case USB_SPEED_UNKNOWN:
+        case USB_SPEED_WIRELESS:
+                /* Should never happen because only LS/FS/HS endpoints will get
+                 * added to the endpoint list.
+                 */
+                return;
+        }
+        if (tt_info)
+                tt_info->active_eps -= 1;
+        list_del_init(&virt_ep->bw_endpoint_list);
+}
+
+static void xhci_add_ep_to_interval_table(struct xhci_hcd *xhci,
+                struct xhci_bw_info *ep_bw,
+                struct xhci_interval_bw_table *bw_table,
+                struct usb_device *udev,
+                struct xhci_virt_ep *virt_ep,
+                struct xhci_tt_bw_info *tt_info)
+{
+        struct xhci_interval_bw *interval_bw;
+        struct xhci_virt_ep *smaller_ep;
+        int normalized_interval;
+
+        if (xhci_is_async_ep(ep_bw->type))
+                return;
+
+        if (udev->speed == USB_SPEED_SUPER) {
+                if (xhci_is_sync_in_ep(ep_bw->type))
+                        xhci->devs[udev->slot_id]->bw_table->ss_bw_in +=
+                                xhci_get_ss_bw_consumed(ep_bw);
+                else
+                        xhci->devs[udev->slot_id]->bw_table->ss_bw_out +=
+                                xhci_get_ss_bw_consumed(ep_bw);
+                return;
+        }
+
+        /* For LS/FS devices, we need to translate the interval expressed in
+         * microframes to frames.
+         */
+        if (udev->speed == USB_SPEED_HIGH)
+                normalized_interval = ep_bw->ep_interval;
+        else
+                normalized_interval = ep_bw->ep_interval - 3;
+
+        if (normalized_interval == 0)
+                bw_table->interval0_esit_payload += ep_bw->max_esit_payload;
+        interval_bw = &bw_table->interval_bw[normalized_interval];
+        interval_bw->num_packets += ep_bw->num_packets;
+        switch (udev->speed) {
+        case USB_SPEED_LOW:
+                interval_bw->overhead[LS_OVERHEAD_TYPE] += 1;
+                break;
+        case USB_SPEED_FULL:
+                interval_bw->overhead[FS_OVERHEAD_TYPE] += 1;
+                break;
+        case USB_SPEED_HIGH:
+                interval_bw->overhead[HS_OVERHEAD_TYPE] += 1;
+                break;
+        case USB_SPEED_SUPER:
+        case USB_SPEED_UNKNOWN:
+        case USB_SPEED_WIRELESS:
+                /* Should never happen because only LS/FS/HS endpoints will get
+                 * added to the endpoint list.
+                 */
+                return;
+        }
+
+        if (tt_info)
+                tt_info->active_eps += 1;
+        /* Insert the endpoint into the list, largest max packet size first. */
+        list_for_each_entry(smaller_ep, &interval_bw->endpoints,
+                        bw_endpoint_list) {
+                if (ep_bw->max_packet_size >=
+                                smaller_ep->bw_info.max_packet_size) {
+                        /* Add the new ep before the smaller endpoint */
+                        list_add_tail(&virt_ep->bw_endpoint_list,
+                                        &smaller_ep->bw_endpoint_list);
+                        return;
+                }
+        }
+        /* Add the new endpoint at the end of the list. */
+        list_add_tail(&virt_ep->bw_endpoint_list,
+                        &interval_bw->endpoints);
+}
+
+void xhci_update_tt_active_eps(struct xhci_hcd *xhci,
+                struct xhci_virt_device *virt_dev,
+                int old_active_eps)
+{
+        struct xhci_root_port_bw_info *rh_bw_info;
+        if (!virt_dev->tt_info)
+                return;
+
+        rh_bw_info = &xhci->rh_bw[virt_dev->real_port - 1];
+        if (old_active_eps == 0 &&
+                                virt_dev->tt_info->active_eps != 0) {
+                rh_bw_info->num_active_tts += 1;
+                rh_bw_info->bw_table.bw_used += TT_HS_OVERHEAD;
+        } else if (old_active_eps != 0 &&
+                                virt_dev->tt_info->active_eps == 0) {
+                rh_bw_info->num_active_tts -= 1;
+                rh_bw_info->bw_table.bw_used -= TT_HS_OVERHEAD;
+        }
+}
+
+static int xhci_reserve_bandwidth(struct xhci_hcd *xhci,
+                struct xhci_virt_device *virt_dev,
+                struct xhci_container_ctx *in_ctx)
+{
+        struct xhci_bw_info ep_bw_info[31];
+        int i;
+        struct xhci_input_control_ctx *ctrl_ctx;
+        int old_active_eps = 0;
+
+        if (virt_dev->tt_info)
+                old_active_eps = virt_dev->tt_info->active_eps;
+
+        ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx);
+
+        for (i = 0; i < 31; i++) {
+                if (!EP_IS_ADDED(ctrl_ctx, i) && !EP_IS_DROPPED(ctrl_ctx, i))
+                        continue;
+
+                /* Make a copy of the BW info in case we need to revert this */
+                memcpy(&ep_bw_info[i], &virt_dev->eps[i].bw_info,
+                                sizeof(ep_bw_info[i]));
+                /* Drop the endpoint from the interval table if the endpoint is
+                 * being dropped or changed.
+                 */
+                if (EP_IS_DROPPED(ctrl_ctx, i))
+                        xhci_drop_ep_from_interval_table(xhci,
+                                        &virt_dev->eps[i].bw_info,
+                                        virt_dev->bw_table,
+                                        virt_dev->udev,
+                                        &virt_dev->eps[i],
+                                        virt_dev->tt_info);
+        }
+        /* Overwrite the information stored in the endpoints' bw_info */
+        xhci_update_bw_info(xhci, virt_dev->in_ctx, ctrl_ctx, virt_dev);
+        for (i = 0; i < 31; i++) {
+                /* Add any changed or added endpoints to the interval table */
+                if (EP_IS_ADDED(ctrl_ctx, i))
+                        xhci_add_ep_to_interval_table(xhci,
+                                        &virt_dev->eps[i].bw_info,
+                                        virt_dev->bw_table,
+                                        virt_dev->udev,
+                                        &virt_dev->eps[i],
+                                        virt_dev->tt_info);
+        }
+
+        if (!xhci_check_bw_table(xhci, virt_dev, old_active_eps)) {
+                /* Ok, this fits in the bandwidth we have.
+                 * Update the number of active TTs.
+                 */
+                xhci_update_tt_active_eps(xhci, virt_dev, old_active_eps);
+                return 0;
+        }
+
+        /* We don't have enough bandwidth for this, revert the stored info. */
+        for (i = 0; i < 31; i++) {
+                if (!EP_IS_ADDED(ctrl_ctx, i) && !EP_IS_DROPPED(ctrl_ctx, i))
+                        continue;
+
+                /* Drop the new copies of any added or changed endpoints from
+                 * the interval table.
+                 */
+                if (EP_IS_ADDED(ctrl_ctx, i)) {
+                        xhci_drop_ep_from_interval_table(xhci,
+                                        &virt_dev->eps[i].bw_info,
+                                        virt_dev->bw_table,
+                                        virt_dev->udev,
+                                        &virt_dev->eps[i],
+                                        virt_dev->tt_info);
+                }
+                /* Revert the endpoint back to its old information */
+                memcpy(&virt_dev->eps[i].bw_info, &ep_bw_info[i],
+                                sizeof(ep_bw_info[i]));
+                /* Add any changed or dropped endpoints back into the table */
+                if (EP_IS_DROPPED(ctrl_ctx, i))
+                        xhci_add_ep_to_interval_table(xhci,
+                                        &virt_dev->eps[i].bw_info,
+                                        virt_dev->bw_table,
+                                        virt_dev->udev,
+                                        &virt_dev->eps[i],
+                                        virt_dev->tt_info);
+        }
+        return -ENOMEM;
+}
+
+
 /* Issue a configure endpoint command or evaluate context command
  * and wait for it to finish.
  */
@@ -1765,17 +2375,30 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci,
 
         spin_lock_irqsave(&xhci->lock, flags);
         virt_dev = xhci->devs[udev->slot_id];
-        if (command) {
+
+        if (command)
                 in_ctx = command->in_ctx;
-                if ((xhci->quirks & XHCI_EP_LIMIT_QUIRK) &&
-                                xhci_reserve_host_resources(xhci, in_ctx)) {
-                        spin_unlock_irqrestore(&xhci->lock, flags);
-                        xhci_warn(xhci, "Not enough host resources, "
-                                        "active endpoint contexts = %u\n",
-                                        xhci->num_active_eps);
-                        return -ENOMEM;
-                }
+        else
+                in_ctx = virt_dev->in_ctx;
+
+        if ((xhci->quirks & XHCI_EP_LIMIT_QUIRK) &&
+                        xhci_reserve_host_resources(xhci, in_ctx)) {
+                spin_unlock_irqrestore(&xhci->lock, flags);
+                xhci_warn(xhci, "Not enough host resources, "
+                                "active endpoint contexts = %u\n",
+                                xhci->num_active_eps);
+                return -ENOMEM;
+        }
+        if ((xhci->quirks & XHCI_SW_BW_CHECKING) &&
+                        xhci_reserve_bandwidth(xhci, virt_dev, in_ctx)) {
+                if ((xhci->quirks & XHCI_EP_LIMIT_QUIRK))
+                        xhci_free_host_resources(xhci, in_ctx);
+                spin_unlock_irqrestore(&xhci->lock, flags);
+                xhci_warn(xhci, "Not enough bandwidth\n");
+                return -ENOMEM;
+        }
 
+        if (command) {
                 cmd_completion = command->completion;
                 cmd_status = &command->status;
                 command->command_trb = xhci->cmd_ring->enqueue;
@@ -1789,15 +2412,6 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci,
 
                 list_add_tail(&command->cmd_list, &virt_dev->cmd_list);
         } else {
-                in_ctx = virt_dev->in_ctx;
-                if ((xhci->quirks & XHCI_EP_LIMIT_QUIRK) &&
-                                xhci_reserve_host_resources(xhci, in_ctx)) {
-                        spin_unlock_irqrestore(&xhci->lock, flags);
-                        xhci_warn(xhci, "Not enough host resources, "
-                                        "active endpoint contexts = %u\n",
-                                        xhci->num_active_eps);
-                        return -ENOMEM;
-                }
                 cmd_completion = &virt_dev->cmd_completion;
                 cmd_status = &virt_dev->cmd_status;
         }
@@ -1888,6 +2502,12 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
         ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG);
         ctrl_ctx->add_flags &= cpu_to_le32(~EP0_FLAG);
         ctrl_ctx->drop_flags &= cpu_to_le32(~(SLOT_FLAG | EP0_FLAG));
+
+        /* Don't issue the command if there's no endpoints to update. */
+        if (ctrl_ctx->add_flags == cpu_to_le32(SLOT_FLAG) &&
+                        ctrl_ctx->drop_flags == 0)
+                return 0;
+
         xhci_dbg(xhci, "New Input Control Context:\n");
         slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->in_ctx);
         xhci_dbg_ctx(xhci, virt_dev->in_ctx,
@@ -2525,6 +3145,7 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
         int timeleft;
         int last_freed_endpoint;
         struct xhci_slot_ctx *slot_ctx;
+        int old_active_eps = 0;
 
         ret = xhci_check_args(hcd, udev, NULL, 0, false, __func__);
         if (ret <= 0)
@@ -2666,7 +3287,18 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
                         xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
                         last_freed_endpoint = i;
                 }
-        }
+                if (!list_empty(&virt_dev->eps[i].bw_endpoint_list))
+                        xhci_drop_ep_from_interval_table(xhci,
+                                        &virt_dev->eps[i].bw_info,
+                                        virt_dev->bw_table,
+                                        udev,
+                                        &virt_dev->eps[i],
+                                        virt_dev->tt_info);
+                xhci_clear_endpoint_bw_info(&virt_dev->eps[i].bw_info);
+        }
+        /* If necessary, update the number of active TTs on this root port */
+        xhci_update_tt_active_eps(xhci, virt_dev, old_active_eps);
+
         xhci_dbg(xhci, "Output context after successful reset device cmd:\n");
         xhci_dbg_ctx(xhci, virt_dev->out_ctx, last_freed_endpoint);
         ret = 0;
@@ -2704,6 +3336,11 @@ void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev)
                 del_timer_sync(&virt_dev->eps[i].stop_cmd_timer);
         }
 
+        if (udev->usb2_hw_lpm_enabled) {
+                xhci_set_usb2_hardware_lpm(hcd, udev, 0);
+                udev->usb2_hw_lpm_enabled = 0;
+        }
+
         spin_lock_irqsave(&xhci->lock, flags);
         /* Don't disable the slot if the host controller is dead. */
         state = xhci_readl(xhci, &xhci->op_regs->status);
@@ -2889,7 +3526,7 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev)
          * command on a timeout.
          */
         if (timeleft <= 0) {
-                xhci_warn(xhci, "%s while waiting for a slot\n",
+                xhci_warn(xhci, "%s while waiting for address device command\n",
                                 timeleft == 0 ? "Timeout" : "Signal");
                 /* FIXME cancel the address device command */
                 return -ETIME;
@@ -2957,6 +3594,254 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev)
         return 0;
 }
 
+#ifdef CONFIG_USB_SUSPEND
+
+/* BESL to HIRD Encoding array for USB2 LPM */
+static int xhci_besl_encoding[16] = {125, 150, 200, 300, 400, 500, 1000, 2000,
+        3000, 4000, 5000, 6000, 7000, 8000, 9000, 10000};
+
+/* Calculate HIRD/BESL for USB2 PORTPMSC*/
+static int xhci_calculate_hird_besl(int u2del, bool use_besl)
+{
+        int hird;
+
+        if (use_besl) {
+                for (hird = 0; hird < 16; hird++) {
+                        if (xhci_besl_encoding[hird] >= u2del)
+                                break;
+                }
+        } else {
+                if (u2del <= 50)
+                        hird = 0;
+                else
+                        hird = (u2del - 51) / 75 + 1;
+
+                if (hird > 15)
+                        hird = 15;
+        }
+
+        return hird;
+}
+
+static int xhci_usb2_software_lpm_test(struct usb_hcd *hcd,
+                                        struct usb_device *udev)
+{
+        struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+        struct dev_info *dev_info;
+        __le32 __iomem  **port_array;
+        __le32 __iomem  *addr, *pm_addr;
+        u32             temp, dev_id;
+        unsigned int    port_num;
+        unsigned long   flags;
+        int             u2del, hird;
+        int             ret;
+
+        if (hcd->speed == HCD_USB3 || !xhci->sw_lpm_support ||
+                        !udev->lpm_capable)
+                return -EINVAL;
+
+        /* we only support lpm for non-hub device connected to root hub yet */
+        if (!udev->parent || udev->parent->parent ||
+                        udev->descriptor.bDeviceClass == USB_CLASS_HUB)
+                return -EINVAL;
+
+        spin_lock_irqsave(&xhci->lock, flags);
+
+        /* Look for devices in lpm_failed_devs list */
+        dev_id = le16_to_cpu(udev->descriptor.idVendor) << 16 |
+                        le16_to_cpu(udev->descriptor.idProduct);
+        list_for_each_entry(dev_info, &xhci->lpm_failed_devs, list) {
+                if (dev_info->dev_id == dev_id) {
+                        ret = -EINVAL;
+                        goto finish;
+                }
+        }
+
+        port_array = xhci->usb2_ports;
+        port_num = udev->portnum - 1;
+
+        if (port_num > HCS_MAX_PORTS(xhci->hcs_params1)) {
+                xhci_dbg(xhci, "invalid port number %d\n", udev->portnum);
+                ret = -EINVAL;
+                goto finish;
+        }
+
+        /*
+         * Test USB 2.0 software LPM.
+         * FIXME: some xHCI 1.0 hosts may implement a new register to set up
+         * hardware-controlled USB 2.0 LPM. See section 5.4.11 and 4.23.5.1.1.1
+         * in the June 2011 errata release.
+         */
+        xhci_dbg(xhci, "test port %d software LPM\n", port_num);
+        /*
+         * Set L1 Device Slot and HIRD/BESL.
+         * Check device's USB 2.0 extension descriptor to determine whether
+         * HIRD or BESL shoule be used. See USB2.0 LPM errata.
+         */
+        pm_addr = port_array[port_num] + 1;
+        u2del = HCS_U2_LATENCY(xhci->hcs_params3);
+        if (le32_to_cpu(udev->bos->ext_cap->bmAttributes) & (1 << 2))
+                hird = xhci_calculate_hird_besl(u2del, 1);
+        else
+                hird = xhci_calculate_hird_besl(u2del, 0);
+
+        temp = PORT_L1DS(udev->slot_id) | PORT_HIRD(hird);
+        xhci_writel(xhci, temp, pm_addr);
+
+        /* Set port link state to U2(L1) */
+        addr = port_array[port_num];
+        xhci_set_link_state(xhci, port_array, port_num, XDEV_U2);
+
+        /* wait for ACK */
+        spin_unlock_irqrestore(&xhci->lock, flags);
+        msleep(10);
+        spin_lock_irqsave(&xhci->lock, flags);
+
+        /* Check L1 Status */
+        ret = handshake(xhci, pm_addr, PORT_L1S_MASK, PORT_L1S_SUCCESS, 125);
+        if (ret != -ETIMEDOUT) {
+                /* enter L1 successfully */
+                temp = xhci_readl(xhci, addr);
+                xhci_dbg(xhci, "port %d entered L1 state, port status 0x%x\n",
+                                port_num, temp);
+                ret = 0;
+        } else {
+                temp = xhci_readl(xhci, pm_addr);
+                xhci_dbg(xhci, "port %d software lpm failed, L1 status %d\n",
+                                port_num, temp & PORT_L1S_MASK);
+                ret = -EINVAL;
+        }
+
+        /* Resume the port */
+        xhci_set_link_state(xhci, port_array, port_num, XDEV_U0);
+
+        spin_unlock_irqrestore(&xhci->lock, flags);
+        msleep(10);
+        spin_lock_irqsave(&xhci->lock, flags);
+
+        /* Clear PLC */
+        xhci_test_and_clear_bit(xhci, port_array, port_num, PORT_PLC);
+
+        /* Check PORTSC to make sure the device is in the right state */
+        if (!ret) {
+                temp = xhci_readl(xhci, addr);
+                xhci_dbg(xhci, "resumed port %d status 0x%x\n", port_num, temp);
+                if (!(temp & PORT_CONNECT) || !(temp & PORT_PE) ||
+                                (temp & PORT_PLS_MASK) != XDEV_U0) {
+                        xhci_dbg(xhci, "port L1 resume fail\n");
+                        ret = -EINVAL;
+                }
+        }
+
+        if (ret) {
+                /* Insert dev to lpm_failed_devs list */
+                xhci_warn(xhci, "device LPM test failed, may disconnect and "
+                                "re-enumerate\n");
+                dev_info = kzalloc(sizeof(struct dev_info), GFP_ATOMIC);
+                if (!dev_info) {
+                        ret = -ENOMEM;
+                        goto finish;
+                }
+                dev_info->dev_id = dev_id;
+                INIT_LIST_HEAD(&dev_info->list);
+                list_add(&dev_info->list, &xhci->lpm_failed_devs);
+        } else {
+                xhci_ring_device(xhci, udev->slot_id);
+        }
+
+finish:
+        spin_unlock_irqrestore(&xhci->lock, flags);
+        return ret;
+}
+
+int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd,
+                        struct usb_device *udev, int enable)
+{
+        struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+        __le32 __iomem  **port_array;
+        __le32 __iomem  *pm_addr;
+        u32             temp;
+        unsigned int    port_num;
+        unsigned long   flags;
+        int             u2del, hird;
+
+        if (hcd->speed == HCD_USB3 || !xhci->hw_lpm_support ||
+                        !udev->lpm_capable)
+                return -EPERM;
+
+        if (!udev->parent || udev->parent->parent ||
+                        udev->descriptor.bDeviceClass == USB_CLASS_HUB)
+                return -EPERM;
+
+        if (udev->usb2_hw_lpm_capable != 1)
+                return -EPERM;
+
+        spin_lock_irqsave(&xhci->lock, flags);
+
+        port_array = xhci->usb2_ports;
+        port_num = udev->portnum - 1;
+        pm_addr = port_array[port_num] + 1;
+        temp = xhci_readl(xhci, pm_addr);
+
+        xhci_dbg(xhci, "%s port %d USB2 hardware LPM\n",
+                        enable ? "enable" : "disable", port_num);
+
+        u2del = HCS_U2_LATENCY(xhci->hcs_params3);
+        if (le32_to_cpu(udev->bos->ext_cap->bmAttributes) & (1 << 2))
+                hird = xhci_calculate_hird_besl(u2del, 1);
+        else
+                hird = xhci_calculate_hird_besl(u2del, 0);
+
+        if (enable) {
+                temp &= ~PORT_HIRD_MASK;
+                temp |= PORT_HIRD(hird) | PORT_RWE;
+                xhci_writel(xhci, temp, pm_addr);
+                temp = xhci_readl(xhci, pm_addr);
+                temp |= PORT_HLE;
+                xhci_writel(xhci, temp, pm_addr);
+        } else {
+                temp &= ~(PORT_HLE | PORT_RWE | PORT_HIRD_MASK);
+                xhci_writel(xhci, temp, pm_addr);
+        }
+
+        spin_unlock_irqrestore(&xhci->lock, flags);
+        return 0;
+}
+
+int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev)
+{
+        struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+        int             ret;
+
+        ret = xhci_usb2_software_lpm_test(hcd, udev);
+        if (!ret) {
+                xhci_dbg(xhci, "software LPM test succeed\n");
+                if (xhci->hw_lpm_support == 1) {
+                        udev->usb2_hw_lpm_capable = 1;
+                        ret = xhci_set_usb2_hardware_lpm(hcd, udev, 1);
+                        if (!ret)
+                                udev->usb2_hw_lpm_enabled = 1;
+                }
+        }
+
+        return 0;
+}
+
+#else
+
+int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd,
+                                struct usb_device *udev, int enable)
+{
+        return 0;
+}
+
+int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev)
+{
+        return 0;
+}
+
+#endif /* CONFIG_USB_SUSPEND */
+
 /* Once a hub descriptor is fetched for a device, we need to update the xHC's
  * internal data structures for the device.
  */
@@ -2988,6 +3873,14 @@ int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
         }
 
         spin_lock_irqsave(&xhci->lock, flags);
+        if (hdev->speed == USB_SPEED_HIGH &&
+                        xhci_alloc_tt_info(xhci, vdev, hdev, tt, GFP_ATOMIC)) {
+                xhci_dbg(xhci, "Could not allocate xHCI TT structure.\n");
+                xhci_free_command(xhci, config_cmd);
+                spin_unlock_irqrestore(&xhci->lock, flags);
+                return -ENOMEM;
+        }
+
         xhci_slot_copy(xhci, config_cmd->in_ctx, vdev->out_ctx);
         ctrl_ctx = xhci_get_input_control_ctx(xhci, config_cmd->in_ctx);
         ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG);
@@ -3051,22 +3944,108 @@ int xhci_get_frame(struct usb_hcd *hcd)
         return xhci_readl(xhci, &xhci->run_regs->microframe_index) >> 3;
 }
 
+int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
+{
+        struct xhci_hcd         *xhci;
+        struct device           *dev = hcd->self.controller;
+        int                     retval;
+        u32                     temp;
+
+        hcd->self.sg_tablesize = TRBS_PER_SEGMENT - 2;
+
+        if (usb_hcd_is_primary_hcd(hcd)) {
+                xhci = kzalloc(sizeof(struct xhci_hcd), GFP_KERNEL);
+                if (!xhci)
+                        return -ENOMEM;
+                *((struct xhci_hcd **) hcd->hcd_priv) = xhci;
+                xhci->main_hcd = hcd;
+                /* Mark the first roothub as being USB 2.0.
+                 * The xHCI driver will register the USB 3.0 roothub.
+                 */
+                hcd->speed = HCD_USB2;
+                hcd->self.root_hub->speed = USB_SPEED_HIGH;
+                /*
+                 * USB 2.0 roothub under xHCI has an integrated TT,
+                 * (rate matching hub) as opposed to having an OHCI/UHCI
+                 * companion controller.
+                 */
+                hcd->has_tt = 1;
+        } else {
+                /* xHCI private pointer was set in xhci_pci_probe for the second
+                 * registered roothub.
+                 */
+                xhci = hcd_to_xhci(hcd);
+                temp = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
+                if (HCC_64BIT_ADDR(temp)) {
+                        xhci_dbg(xhci, "Enabling 64-bit DMA addresses.\n");
+                        dma_set_mask(hcd->self.controller, DMA_BIT_MASK(64));
+                } else {
+                        dma_set_mask(hcd->self.controller, DMA_BIT_MASK(32));
+                }
+                return 0;
+        }
+
+        xhci->cap_regs = hcd->regs;
+        xhci->op_regs = hcd->regs +
+                HC_LENGTH(xhci_readl(xhci, &xhci->cap_regs->hc_capbase));
+        xhci->run_regs = hcd->regs +
+                (xhci_readl(xhci, &xhci->cap_regs->run_regs_off) & RTSOFF_MASK);
+        /* Cache read-only capability registers */
+        xhci->hcs_params1 = xhci_readl(xhci, &xhci->cap_regs->hcs_params1);
+        xhci->hcs_params2 = xhci_readl(xhci, &xhci->cap_regs->hcs_params2);
+        xhci->hcs_params3 = xhci_readl(xhci, &xhci->cap_regs->hcs_params3);
+        xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hc_capbase);
+        xhci->hci_version = HC_VERSION(xhci->hcc_params);
+        xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
+        xhci_print_registers(xhci);
+
+        get_quirks(dev, xhci);
+
+        /* Make sure the HC is halted. */
+        retval = xhci_halt(xhci);
+        if (retval)
+                goto error;
+
+        xhci_dbg(xhci, "Resetting HCD\n");
+        /* Reset the internal HC memory state and registers. */
+        retval = xhci_reset(xhci);
+        if (retval)
+                goto error;
+        xhci_dbg(xhci, "Reset complete\n");
+
+        temp = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
+        if (HCC_64BIT_ADDR(temp)) {
+                xhci_dbg(xhci, "Enabling 64-bit DMA addresses.\n");
+                dma_set_mask(hcd->self.controller, DMA_BIT_MASK(64));
+        } else {
+                dma_set_mask(hcd->self.controller, DMA_BIT_MASK(32));
+        }
+
+        xhci_dbg(xhci, "Calling HCD init\n");
+        /* Initialize HCD and host controller data structures. */
+        retval = xhci_init(hcd);
+        if (retval)
+                goto error;
+        xhci_dbg(xhci, "Called HCD init\n");
+        return 0;
+error:
+        kfree(xhci);
+        return retval;
+}
+
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_LICENSE("GPL");
 
 static int __init xhci_hcd_init(void)
 {
-#ifdef CONFIG_PCI
-        int retval = 0;
+        int retval;
 
         retval = xhci_register_pci();
-
         if (retval < 0) {
                 printk(KERN_DEBUG "Problem registering PCI driver.");
                 return retval;
         }
-#endif
         /*
          * Check the compiler generated sizes of structures that must be laid
          * out in specific ways for hardware access.
@@ -3091,8 +4070,6 @@ module_init(xhci_hcd_init);
 
 static void __exit xhci_hcd_cleanup(void)
 {
-#ifdef CONFIG_PCI
         xhci_unregister_pci();
-#endif
 }
 module_exit(xhci_hcd_cleanup);
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index cae8e23308bf..3c8fbd2772ea 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -272,6 +272,7 @@ struct xhci_op_regs {
  */
 #define PORT_PLS_MASK   (0xf << 5)
 #define XDEV_U0         (0x0 << 5)
+#define XDEV_U2         (0x2 << 5)
 #define XDEV_U3         (0x3 << 5)
 #define XDEV_RESUME     (0xf << 5)
 /* true: port has power (see HCC_PPC) */
@@ -362,7 +363,13 @@ struct xhci_op_regs {
 /* Bits 24:31 for port testing */
 
 /* USB2 Protocol PORTSPMSC */
-#define PORT_RWE        (1 << 0x3)
+#define PORT_L1S_MASK           7
+#define PORT_L1S_SUCCESS        1
+#define PORT_RWE                (1 << 3)
+#define PORT_HIRD(p)            (((p) & 0xf) << 4)
+#define PORT_HIRD_MASK          (0xf << 4)
+#define PORT_L1DS(p)            (((p) & 0xff) << 8)
+#define PORT_HLE                (1 << 16)
 
 /**
  * struct xhci_intr_reg - Interrupt Register Set
@@ -611,11 +618,13 @@ struct xhci_ep_ctx {
 #define EP_STATE_ERROR          4
 /* Mult - Max number of burtst within an interval, in EP companion desc. */
 #define EP_MULT(p)              (((p) & 0x3) << 8)
+#define CTX_TO_EP_MULT(p)       (((p) >> 8) & 0x3)
 /* bits 10:14 are Max Primary Streams */
 /* bit 15 is Linear Stream Array */
 /* Interval - period between requests to an endpoint - 125u increments. */
 #define EP_INTERVAL(p)          (((p) & 0xff) << 16)
 #define EP_INTERVAL_TO_UFRAMES(p)               (1 << (((p) >> 16) & 0xff))
+#define CTX_TO_EP_INTERVAL(p)   (((p) >> 16) & 0xff)
 #define EP_MAXPSTREAMS_MASK     (0x1f << 10)
 #define EP_MAXPSTREAMS(p)       (((p) << 10) & EP_MAXPSTREAMS_MASK)
 /* Endpoint is set up with a Linear Stream Array (vs. Secondary Stream Array) */
@@ -640,6 +649,7 @@ struct xhci_ep_ctx {
 /* bit 6 reserved */
 /* bit 7 is Host Initiate Disable - for disabling stream selection */
 #define MAX_BURST(p)    (((p)&0xff) << 8)
+#define CTX_TO_MAX_BURST(p)     (((p) >> 8) & 0xff)
 #define MAX_PACKET(p)   (((p)&0xffff) << 16)
 #define MAX_PACKET_MASK         (0xffff << 16)
 #define MAX_PACKET_DECODED(p)   (((p) >> 16) & 0xffff)
@@ -652,6 +662,7 @@ struct xhci_ep_ctx {
 /* tx_info bitmasks */
 #define AVG_TRB_LENGTH_FOR_EP(p)        ((p) & 0xffff)
 #define MAX_ESIT_PAYLOAD_FOR_EP(p)      (((p) & 0xffff) << 16)
+#define CTX_TO_MAX_ESIT_PAYLOAD(p)      (((p) >> 16) & 0xffff)
 
 /* deq bitmasks */
 #define EP_CTX_CYCLE_MASK               (1 << 0)
@@ -670,6 +681,11 @@ struct xhci_input_control_ctx {
         __le32  rsvd2[6];
 };
 
+#define EP_IS_ADDED(ctrl_ctx, i) \
+        (le32_to_cpu(ctrl_ctx->add_flags) & (1 << (i + 1)))
+#define EP_IS_DROPPED(ctrl_ctx, i)       \
+        (le32_to_cpu(ctrl_ctx->drop_flags) & (1 << (i + 1)))
+
 /* Represents everything that is needed to issue a command on the command ring.
  * It's useful to pre-allocate these for commands that cannot fail due to
  * out-of-memory errors, like freeing streams.
@@ -731,6 +747,67 @@ struct xhci_stream_info {
 #define SMALL_STREAM_ARRAY_SIZE         256
 #define MEDIUM_STREAM_ARRAY_SIZE        1024
 
+/* Some Intel xHCI host controllers need software to keep track of the bus
+ * bandwidth.  Keep track of endpoint info here.  Each root port is allocated
+ * the full bus bandwidth.  We must also treat TTs (including each port under a
+ * multi-TT hub) as a separate bandwidth domain.  The direct memory interface
+ * (DMI) also limits the total bandwidth (across all domains) that can be used.
+ */
+struct xhci_bw_info {
+        /* ep_interval is zero-based */
+        unsigned int            ep_interval;
+        /* mult and num_packets are one-based */
+        unsigned int            mult;
+        unsigned int            num_packets;
+        unsigned int            max_packet_size;
+        unsigned int            max_esit_payload;
+        unsigned int            type;
+};
+
+/* "Block" sizes in bytes the hardware uses for different device speeds.
+ * The logic in this part of the hardware limits the number of bits the hardware
+ * can use, so must represent bandwidth in a less precise manner to mimic what
+ * the scheduler hardware computes.
+ */
+#define FS_BLOCK        1
+#define HS_BLOCK        4
+#define SS_BLOCK        16
+#define DMI_BLOCK       32
+
+/* Each device speed has a protocol overhead (CRC, bit stuffing, etc) associated
+ * with each byte transferred.  SuperSpeed devices have an initial overhead to
+ * set up bursts.  These are in blocks, see above.  LS overhead has already been
+ * translated into FS blocks.
+ */
+#define DMI_OVERHEAD 8
+#define DMI_OVERHEAD_BURST 4
+#define SS_OVERHEAD 8
+#define SS_OVERHEAD_BURST 32
+#define HS_OVERHEAD 26
+#define FS_OVERHEAD 20
+#define LS_OVERHEAD 128
+/* The TTs need to claim roughly twice as much bandwidth (94 bytes per
+ * microframe ~= 24Mbps) of the HS bus as the devices can actually use because
+ * of overhead associated with split transfers crossing microframe boundaries.
+ * 31 blocks is pure protocol overhead.
+ */
+#define TT_HS_OVERHEAD (31 + 94)
+#define TT_DMI_OVERHEAD (25 + 12)
+
+/* Bandwidth limits in blocks */
+#define FS_BW_LIMIT             1285
+#define TT_BW_LIMIT             1320
+#define HS_BW_LIMIT             1607
+#define SS_BW_LIMIT_IN          3906
+#define DMI_BW_LIMIT_IN         3906
+#define SS_BW_LIMIT_OUT         3906
+#define DMI_BW_LIMIT_OUT        3906
+
+/* Percentage of bus bandwidth reserved for non-periodic transfers */
+#define FS_BW_RESERVED          10
+#define HS_BW_RESERVED          20
+#define SS_BW_RESERVED          10
+
 struct xhci_virt_ep {
         struct xhci_ring                *ring;
         /* Related to endpoints that are configured to use stream IDs only */
@@ -772,8 +849,39 @@ struct xhci_virt_ep {
          * process the missed tds on the endpoint ring.
          */
         bool                    skip;
+        /* Bandwidth checking storage */
+        struct xhci_bw_info     bw_info;
+        struct list_head        bw_endpoint_list;
+};
+
+enum xhci_overhead_type {
+        LS_OVERHEAD_TYPE = 0,
+        FS_OVERHEAD_TYPE,
+        HS_OVERHEAD_TYPE,
+};
+
+struct xhci_interval_bw {
+        unsigned int            num_packets;
+        /* Sorted by max packet size.
+         * Head of the list is the greatest max packet size.
+         */
+        struct list_head        endpoints;
+        /* How many endpoints of each speed are present. */
+        unsigned int            overhead[3];
+};
+
+#define XHCI_MAX_INTERVAL       16
+
+struct xhci_interval_bw_table {
+        unsigned int            interval0_esit_payload;
+        struct xhci_interval_bw interval_bw[XHCI_MAX_INTERVAL];
+        /* Includes reserved bandwidth for async endpoints */
+        unsigned int            bw_used;
+        unsigned int            ss_bw_in;
+        unsigned int            ss_bw_out;
 };
 
+
 struct xhci_virt_device {
         struct usb_device               *udev;
         /*
@@ -798,7 +906,32 @@ struct xhci_virt_device {
         /* Status of the last command issued for this device */
         u32                             cmd_status;
         struct list_head                cmd_list;
-        u8                              port;
+        u8                              fake_port;
+        u8                              real_port;
+        struct xhci_interval_bw_table   *bw_table;
+        struct xhci_tt_bw_info          *tt_info;
+};
+
+/*
+ * For each roothub, keep track of the bandwidth information for each periodic
+ * interval.
+ *
+ * If a high speed hub is attached to the roothub, each TT associated with that
+ * hub is a separate bandwidth domain.  The interval information for the
+ * endpoints on the devices under that TT will appear in the TT structure.
+ */
+struct xhci_root_port_bw_info {
+        struct list_head                tts;
+        unsigned int                    num_active_tts;
+        struct xhci_interval_bw_table   bw_table;
+};
+
+struct xhci_tt_bw_info {
+        struct list_head                tt_list;
+        int                             slot_id;
+        int                             ttport;
+        struct xhci_interval_bw_table   bw_table;
+        int                             active_eps;
 };
 
 
@@ -1198,6 +1331,12 @@ struct s3_save {
         u64     erst_dequeue;
 };
 
+/* Use for lpm */
+struct dev_info {
+        u32                     dev_id;
+        struct  list_head       list;
+};
+
 struct xhci_bus_state {
         unsigned long           bus_suspended;
         unsigned long           next_statechange;
@@ -1261,12 +1400,16 @@ struct xhci_hcd {
         struct xhci_erst        erst;
         /* Scratchpad */
         struct xhci_scratchpad  *scratchpad;
+        /* Store LPM test failed devices' information */
+        struct list_head        lpm_failed_devs;
 
         /* slot enabling and address device helpers */
         struct completion       addr_dev;
         int slot_id;
         /* Internal mirror of the HW's dcbaa */
         struct xhci_virt_device *devs[MAX_HC_SLOTS];
+        /* For keeping track of bandwidth domains per roothub. */
+        struct xhci_root_port_bw_info   *rh_bw;
 
         /* DMA pools */
         struct dma_pool *device_pool;
@@ -1318,6 +1461,8 @@ struct xhci_hcd {
 #define XHCI_EP_LIMIT_QUIRK     (1 << 5)
 #define XHCI_BROKEN_MSI         (1 << 6)
 #define XHCI_RESET_ON_RESUME    (1 << 7)
+#define XHCI_SW_BW_CHECKING     (1 << 8)
+#define XHCI_AMD_0x96_HOST      (1 << 9)
         unsigned int            num_active_eps;
         unsigned int            limit_active_eps;
         /* There are two roothubs to keep track of bus suspend info for */
@@ -1330,6 +1475,10 @@ struct xhci_hcd {
         /* Array of pointers to USB 2.0 PORTSC registers */
         __le32 __iomem          **usb2_ports;
         unsigned int            num_usb2_ports;
+        /* support xHCI 0.96 spec USB2 software LPM */
+        unsigned                sw_lpm_support:1;
+        /* support xHCI 1.0 spec USB2 hardware LPM */
+        unsigned                hw_lpm_support:1;
 };
 
 /* convert between an HCD pointer and the corresponding EHCI_HCD */
@@ -1401,9 +1550,7 @@ static inline void xhci_write_64(struct xhci_hcd *xhci,
 
 static inline int xhci_link_trb_quirk(struct xhci_hcd *xhci)
 {
-        u32 temp = xhci_readl(xhci, &xhci->cap_regs->hc_capbase);
-        return ((HC_VERSION(temp) == 0x95) &&
-                        (xhci->quirks & XHCI_LINK_TRB_QUIRK));
+        return xhci->quirks & XHCI_LINK_TRB_QUIRK;
 }
 
 /* xHCI debugging */
@@ -1438,6 +1585,20 @@ unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc);
 unsigned int xhci_get_endpoint_flag_from_index(unsigned int ep_index);
 unsigned int xhci_last_valid_endpoint(u32 added_ctxs);
 void xhci_endpoint_zero(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_host_endpoint *ep);
+void xhci_drop_ep_from_interval_table(struct xhci_hcd *xhci,
+                struct xhci_bw_info *ep_bw,
+                struct xhci_interval_bw_table *bw_table,
+                struct usb_device *udev,
+                struct xhci_virt_ep *virt_ep,
+                struct xhci_tt_bw_info *tt_info);
+void xhci_update_tt_active_eps(struct xhci_hcd *xhci,
+                struct xhci_virt_device *virt_dev,
+                int old_active_eps);
+void xhci_clear_endpoint_bw_info(struct xhci_bw_info *bw_info);
+void xhci_update_bw_info(struct xhci_hcd *xhci,
+                struct xhci_container_ctx *in_ctx,
+                struct xhci_input_control_ctx *ctrl_ctx,
+                struct xhci_virt_device *virt_dev);
 void xhci_endpoint_copy(struct xhci_hcd *xhci,
                 struct xhci_container_ctx *in_ctx,
                 struct xhci_container_ctx *out_ctx,
@@ -1483,9 +1644,13 @@ void xhci_free_command(struct xhci_hcd *xhci,
 /* xHCI PCI glue */
 int xhci_register_pci(void);
 void xhci_unregister_pci(void);
+#else
+static inline int xhci_register_pci(void) { return 0; }
+static inline void xhci_unregister_pci(void) {}
 #endif
 
 /* xHCI host controller glue */
+typedef void (*xhci_get_quirks_t)(struct device *, struct xhci_hcd *);
 void xhci_quiesce(struct xhci_hcd *xhci);
 int xhci_halt(struct xhci_hcd *xhci);
 int xhci_reset(struct xhci_hcd *xhci);
@@ -1493,6 +1658,7 @@ int xhci_init(struct usb_hcd *hcd);
 int xhci_run(struct usb_hcd *hcd);
 void xhci_stop(struct usb_hcd *hcd);
 void xhci_shutdown(struct usb_hcd *hcd);
+int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks);
 
 #ifdef  CONFIG_PM
 int xhci_suspend(struct xhci_hcd *xhci);
@@ -1507,6 +1673,10 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd);
 irqreturn_t xhci_msi_irq(int irq, struct usb_hcd *hcd);
 int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev);
 void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev);
+int xhci_alloc_tt_info(struct xhci_hcd *xhci,
+                struct xhci_virt_device *virt_dev,
+                struct usb_device *hdev,
+                struct usb_tt *tt, gfp_t mem_flags);
 int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev,
                 struct usb_host_endpoint **eps, unsigned int num_eps,
                 unsigned int num_streams, gfp_t mem_flags);
@@ -1514,6 +1684,9 @@ int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev,
                 struct usb_host_endpoint **eps, unsigned int num_eps,
                 gfp_t mem_flags);
 int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev);
+int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev);
+int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd,
+                                struct usb_device *udev, int enable);
 int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
                         struct usb_tt *tt, gfp_t mem_flags);
 int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags);
@@ -1572,6 +1745,10 @@ void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, unsigned int slot_id,
                 unsigned int ep_index, unsigned int stream_id);
 
 /* xHCI roothub code */
+void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array,
+                                int port_id, u32 link_state);
+void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array,
+                                int port_id, u32 port_bit);
 int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex,
                 char *buf, u16 wLength);
 int xhci_hub_status_data(struct usb_hcd *hcd, char *buf);
diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c
index a6afd15f6a46..fe858711651c 100644
--- a/drivers/usb/misc/adutux.c
+++ b/drivers/usb/misc/adutux.c
@@ -213,7 +213,7 @@ static void adu_interrupt_in_callback(struct urb *urb)
 
         if (urb->actual_length > 0 && dev->interrupt_in_buffer[0] != 0x00) {
                 if (dev->read_buffer_length <
-                    (4 * le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize)) -
+                    (4 * usb_endpoint_maxp(dev->interrupt_in_endpoint)) -
                      (urb->actual_length)) {
                         memcpy (dev->read_buffer_primary +
                                 dev->read_buffer_length,
@@ -315,7 +315,7 @@ static int adu_open(struct inode *inode, struct file *file)
                          usb_rcvintpipe(dev->udev,
                                         dev->interrupt_in_endpoint->bEndpointAddress),
                          dev->interrupt_in_buffer,
-                         le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize),
+                         usb_endpoint_maxp(dev->interrupt_in_endpoint),
                          adu_interrupt_in_callback, dev,
                          dev->interrupt_in_endpoint->bInterval);
         dev->read_urb_finished = 0;
@@ -483,7 +483,7 @@ static ssize_t adu_read(struct file *file, __user char *buffer, size_t count,
                                                          usb_rcvintpipe(dev->udev,
                                                                         dev->interrupt_in_endpoint->bEndpointAddress),
                                                          dev->interrupt_in_buffer,
-                                                         le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize),
+                                                         usb_endpoint_maxp(dev->interrupt_in_endpoint),
                                                          adu_interrupt_in_callback,
                                                          dev,
                                                          dev->interrupt_in_endpoint->bInterval);
@@ -536,7 +536,7 @@ static ssize_t adu_read(struct file *file, __user char *buffer, size_t count,
                                  usb_rcvintpipe(dev->udev,
                                                 dev->interrupt_in_endpoint->bEndpointAddress),
                                 dev->interrupt_in_buffer,
-                                le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize),
+                                usb_endpoint_maxp(dev->interrupt_in_endpoint),
                                 adu_interrupt_in_callback,
                                 dev,
                                 dev->interrupt_in_endpoint->bInterval);
@@ -622,7 +622,7 @@ static ssize_t adu_write(struct file *file, const __user char *buffer,
                         dbg(4," %s : sending, count = %Zd", __func__, count);
 
                         /* write the data into interrupt_out_buffer from userspace */
-                        buffer_size = le16_to_cpu(dev->interrupt_out_endpoint->wMaxPacketSize);
+                        buffer_size = usb_endpoint_maxp(dev->interrupt_out_endpoint);
                         bytes_to_write = count > buffer_size ? buffer_size : count;
                         dbg(4," %s : buffer_size = %Zd, count = %Zd, bytes_to_write = %Zd",
                             __func__, buffer_size, count, bytes_to_write);
@@ -752,8 +752,8 @@ static int adu_probe(struct usb_interface *interface,
                 goto error;
         }
 
-        in_end_size = le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize);
-        out_end_size = le16_to_cpu(dev->interrupt_out_endpoint->wMaxPacketSize);
+        in_end_size = usb_endpoint_maxp(dev->interrupt_in_endpoint);
+        out_end_size = usb_endpoint_maxp(dev->interrupt_out_endpoint);
 
         dev->read_buffer_primary = kmalloc((4 * in_end_size), GFP_KERNEL);
         if (!dev->read_buffer_primary) {
diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
index 2f41089cd854..2dbe600fbc11 100644
--- a/drivers/usb/misc/ftdi-elan.c
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -2777,7 +2777,7 @@ static int ftdi_elan_probe(struct usb_interface *interface,
                 endpoint = &iface_desc->endpoint[i].desc;
                 if (!ftdi->bulk_in_endpointAddr &&
                     usb_endpoint_is_bulk_in(endpoint)) {
-                        buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+                        buffer_size = usb_endpoint_maxp(endpoint);
                         ftdi->bulk_in_size = buffer_size;
                         ftdi->bulk_in_endpointAddr = endpoint->bEndpointAddress;
                         ftdi->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
diff --git a/drivers/usb/misc/idmouse.c b/drivers/usb/misc/idmouse.c
index c6184b4d1695..515b67fffab1 100644
--- a/drivers/usb/misc/idmouse.c
+++ b/drivers/usb/misc/idmouse.c
@@ -359,7 +359,7 @@ static int idmouse_probe(struct usb_interface *interface,
         endpoint = &iface_desc->endpoint[0].desc;
         if (!dev->bulk_in_endpointAddr && usb_endpoint_is_bulk_in(endpoint)) {
                 /* we found a bulk in endpoint */
-                dev->orig_bi_size = le16_to_cpu(endpoint->wMaxPacketSize);
+                dev->orig_bi_size = usb_endpoint_maxp(endpoint);
                 dev->bulk_in_size = 0x200; /* works _much_ faster */
                 dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
                 dev->bulk_in_buffer =
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index a2190b983f52..81457904d6ba 100644
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -803,7 +803,7 @@ static int iowarrior_probe(struct usb_interface *interface,
                         dev->int_out_endpoint = endpoint;
         }
         /* we have to check the report_size often, so remember it in the endianess suitable for our machine */
-        dev->report_size = le16_to_cpu(dev->int_in_endpoint->wMaxPacketSize);
+        dev->report_size = usb_endpoint_maxp(dev->int_in_endpoint);
         if ((dev->interface->cur_altsetting->desc.bInterfaceNumber == 0) &&
             (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56))
                 /* IOWarrior56 has wMaxPacketSize different from report size */
diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c
index cb4096201e29..48c166f0d764 100644
--- a/drivers/usb/misc/ldusb.c
+++ b/drivers/usb/misc/ldusb.c
@@ -721,7 +721,7 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id *
         if (dev->interrupt_out_endpoint == NULL)
                 dev_warn(&intf->dev, "Interrupt out endpoint not found (using control endpoint instead)\n");
 
-        dev->interrupt_in_endpoint_size = le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize);
+        dev->interrupt_in_endpoint_size = usb_endpoint_maxp(dev->interrupt_in_endpoint);
         dev->ring_buffer = kmalloc(ring_buffer_size*(sizeof(size_t)+dev->interrupt_in_endpoint_size), GFP_KERNEL);
         if (!dev->ring_buffer) {
                 dev_err(&intf->dev, "Couldn't allocate ring_buffer\n");
@@ -737,7 +737,7 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id *
                 dev_err(&intf->dev, "Couldn't allocate interrupt_in_urb\n");
                 goto error;
         }
-        dev->interrupt_out_endpoint_size = dev->interrupt_out_endpoint ? le16_to_cpu(dev->interrupt_out_endpoint->wMaxPacketSize) :
+        dev->interrupt_out_endpoint_size = dev->interrupt_out_endpoint ? usb_endpoint_maxp(dev->interrupt_out_endpoint) :
                                                                          udev->descriptor.bMaxPacketSize0;
         dev->interrupt_out_buffer = kmalloc(write_buffer_size*dev->interrupt_out_endpoint_size, GFP_KERNEL);
         if (!dev->interrupt_out_buffer) {
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index 6482c6e2e6bd..a989356f693e 100644
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -409,7 +409,7 @@ static int tower_open (struct inode *inode, struct file *file)
                           dev->udev,
                           usb_rcvintpipe(dev->udev, dev->interrupt_in_endpoint->bEndpointAddress),
                           dev->interrupt_in_buffer,
-                          le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize),
+                          usb_endpoint_maxp(dev->interrupt_in_endpoint),
                           tower_interrupt_in_callback,
                           dev,
                           dev->interrupt_in_interval);
@@ -928,7 +928,7 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device
                 err("Couldn't allocate read_buffer");
                 goto error;
         }
-        dev->interrupt_in_buffer = kmalloc (le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize), GFP_KERNEL);
+        dev->interrupt_in_buffer = kmalloc (usb_endpoint_maxp(dev->interrupt_in_endpoint), GFP_KERNEL);
         if (!dev->interrupt_in_buffer) {
                 err("Couldn't allocate interrupt_in_buffer");
                 goto error;
diff --git a/drivers/usb/misc/usblcd.c b/drivers/usb/misc/usblcd.c
index 51648154bb44..1871cdf10da3 100644
--- a/drivers/usb/misc/usblcd.c
+++ b/drivers/usb/misc/usblcd.c
@@ -18,7 +18,7 @@
 #include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/mutex.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <linux/usb.h>
 
 #define DRIVER_VERSION "USBLCD Driver Version 1.05"
@@ -34,22 +34,29 @@ static const struct usb_device_id id_table[] = {
         { .idVendor = 0x10D2, .match_flags = USB_DEVICE_ID_MATCH_VENDOR, },
         { },
 };
-MODULE_DEVICE_TABLE (usb, id_table);
+MODULE_DEVICE_TABLE(usb, id_table);
 
 static DEFINE_MUTEX(open_disc_mutex);
 
 
 struct usb_lcd {
-        struct usb_device *     udev;                   /* init: probe_lcd */
-        struct usb_interface *  interface;              /* the interface for this device */
-        unsigned char *         bulk_in_buffer;         /* the buffer to receive data */
-        size_t                  bulk_in_size;           /* the size of the receive buffer */
-        __u8                    bulk_in_endpointAddr;   /* the address of the bulk in endpoint */
-        __u8                    bulk_out_endpointAddr;  /* the address of the bulk out endpoint */
+        struct usb_device       *udev;                  /* init: probe_lcd */
+        struct usb_interface    *interface;             /* the interface for
+                                                           this device */
+        unsigned char           *bulk_in_buffer;        /* the buffer to receive
+                                                           data */
+        size_t                  bulk_in_size;           /* the size of the
+                                                           receive buffer */
+        __u8                    bulk_in_endpointAddr;   /* the address of the
+                                                           bulk in endpoint */
+        __u8                    bulk_out_endpointAddr;  /* the address of the
+                                                           bulk out endpoint */
         struct kref             kref;
-        struct semaphore        limit_sem;              /* to stop writes at full throttle from
-                                                         * using up all RAM */
-        struct usb_anchor       submitted;              /* URBs to wait for before suspend */
+        struct semaphore        limit_sem;              /* to stop writes at
+                                                           full throttle from
+                                                           using up all RAM */
+        struct usb_anchor       submitted;              /* URBs to wait for
+                                                           before suspend */
 };
 #define to_lcd_dev(d) container_of(d, struct usb_lcd, kref)
 
@@ -63,8 +70,8 @@ static void lcd_delete(struct kref *kref)
         struct usb_lcd *dev = to_lcd_dev(kref);
 
         usb_put_dev(dev->udev);
-        kfree (dev->bulk_in_buffer);
-        kfree (dev);
+        kfree(dev->bulk_in_buffer);
+        kfree(dev);
 }
 
 
@@ -80,7 +87,7 @@ static int lcd_open(struct inode *inode, struct file *file)
         interface = usb_find_interface(&lcd_driver, subminor);
         if (!interface) {
                 mutex_unlock(&lcd_mutex);
-                err ("USBLCD: %s - error, can't find device for minor %d",
+                err("USBLCD: %s - error, can't find device for minor %d",
                      __func__, subminor);
                 return -ENODEV;
         }
@@ -126,7 +133,8 @@ static int lcd_release(struct inode *inode, struct file *file)
         return 0;
 }
 
-static ssize_t lcd_read(struct file *file, char __user * buffer, size_t count, loff_t *ppos)
+static ssize_t lcd_read(struct file *file, char __user * buffer,
+                        size_t count, loff_t *ppos)
 {
         struct usb_lcd *dev;
         int retval = 0;
@@ -135,8 +143,9 @@ static ssize_t lcd_read(struct file *file, char __user * buffer, size_t count, l
         dev = file->private_data;
 
         /* do a blocking bulk read to get data from the device */
-        retval = usb_bulk_msg(dev->udev, 
-                              usb_rcvbulkpipe(dev->udev, dev->bulk_in_endpointAddr),
+        retval = usb_bulk_msg(dev->udev,
+                              usb_rcvbulkpipe(dev->udev,
+                                              dev->bulk_in_endpointAddr),
                               dev->bulk_in_buffer,
                               min(dev->bulk_in_size, count),
                               &bytes_read, 10000);
@@ -161,23 +170,23 @@ static long lcd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
         dev = file->private_data;
         if (dev == NULL)
                 return -ENODEV;
-        
+
         switch (cmd) {
         case IOCTL_GET_HARD_VERSION:
                 mutex_lock(&lcd_mutex);
                 bcdDevice = le16_to_cpu((dev->udev)->descriptor.bcdDevice);
-                sprintf(buf,"%1d%1d.%1d%1d",
+                sprintf(buf, "%1d%1d.%1d%1d",
                         (bcdDevice & 0xF000)>>12,
                         (bcdDevice & 0xF00)>>8,
                         (bcdDevice & 0xF0)>>4,
                         (bcdDevice & 0xF));
                 mutex_unlock(&lcd_mutex);
-                if (copy_to_user((void __user *)arg,buf,strlen(buf))!=0)
+                if (copy_to_user((void __user *)arg, buf, strlen(buf)) != 0)
                         return -EFAULT;
                 break;
         case IOCTL_GET_DRV_VERSION:
-                sprintf(buf,DRIVER_VERSION);
-                if (copy_to_user((void __user *)arg,buf,strlen(buf))!=0)
+                sprintf(buf, DRIVER_VERSION);
+                if (copy_to_user((void __user *)arg, buf, strlen(buf)) != 0)
                         return -EFAULT;
                 break;
         default:
@@ -199,7 +208,7 @@ static void lcd_write_bulk_callback(struct urb *urb)
         if (status &&
             !(status == -ENOENT ||
               status == -ECONNRESET ||
-              status == -ESHUTDOWN)) {
+              status == -ESHUTDOWN)) {
                 dbg("USBLCD: %s - nonzero write bulk status received: %d",
                     __func__, status);
         }
@@ -210,15 +219,16 @@ static void lcd_write_bulk_callback(struct urb *urb)
         up(&dev->limit_sem);
 }
 
-static ssize_t lcd_write(struct file *file, const char __user * user_buffer, size_t count, loff_t *ppos)
+static ssize_t lcd_write(struct file *file, const char __user * user_buffer,
+                         size_t count, loff_t *ppos)
 {
         struct usb_lcd *dev;
-        int retval = 0, r;
+        int retval = 0, r;
         struct urb *urb = NULL;
         char *buf = NULL;
-        
+
         dev = file->private_data;
-        
+
         /* verify that we actually have some data to write */
         if (count == 0)
                 goto exit;
@@ -233,34 +243,38 @@ static ssize_t lcd_write(struct file *file, const char __user * user_buffer, siz
                 retval = -ENOMEM;
                 goto err_no_buf;
         }
-        
-        buf = usb_alloc_coherent(dev->udev, count, GFP_KERNEL, &urb->transfer_dma);
+
+        buf = usb_alloc_coherent(dev->udev, count, GFP_KERNEL,
+                                 &urb->transfer_dma);
         if (!buf) {
                 retval = -ENOMEM;
                 goto error;
         }
-        
+
         if (copy_from_user(buf, user_buffer, count)) {
                 retval = -EFAULT;
                 goto error;
         }
-        
+
         /* initialize the urb properly */
         usb_fill_bulk_urb(urb, dev->udev,
-                          usb_sndbulkpipe(dev->udev, dev->bulk_out_endpointAddr),
+                          usb_sndbulkpipe(dev->udev,
+                          dev->bulk_out_endpointAddr),
                           buf, count, lcd_write_bulk_callback, dev);
         urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 
         usb_anchor_urb(urb, &dev->submitted);
-        
+
         /* send the data out the bulk port */
         retval = usb_submit_urb(urb, GFP_KERNEL);
         if (retval) {
-                err("USBLCD: %s - failed submitting write urb, error %d", __func__, retval);
+                err("USBLCD: %s - failed submitting write urb, error %d",
+                    __func__, retval);
                 goto error_unanchor;
         }
-        
-        /* release our reference to this urb, the USB core will eventually free it entirely */
+
+        /* release our reference to this urb,
+           the USB core will eventually free it entirely */
         usb_free_urb(urb);
 
 exit:
@@ -276,13 +290,13 @@ err_no_buf:
 }
 
 static const struct file_operations lcd_fops = {
-        .owner =        THIS_MODULE,
-        .read =         lcd_read,
-        .write =        lcd_write,
-        .open =         lcd_open,
+        .owner =        THIS_MODULE,
+        .read =         lcd_read,
+        .write =        lcd_write,
+        .open =         lcd_open,
         .unlocked_ioctl = lcd_ioctl,
-        .release =      lcd_release,
-        .llseek =        noop_llseek,
+        .release =      lcd_release,
+        .llseek =        noop_llseek,
 };
 
 /*
@@ -290,12 +304,13 @@ static const struct file_operations lcd_fops = {
  * and to have the device registered with the driver core
  */
 static struct usb_class_driver lcd_class = {
-        .name =         "lcd%d",
-        .fops =         &lcd_fops,
-        .minor_base =   USBLCD_MINOR,
+        .name =         "lcd%d",
+        .fops =         &lcd_fops,
+        .minor_base =   USBLCD_MINOR,
 };
 
-static int lcd_probe(struct usb_interface *interface, const struct usb_device_id *id)
+static int lcd_probe(struct usb_interface *interface,
+                     const struct usb_device_id *id)
 {
         struct usb_lcd *dev = NULL;
         struct usb_host_interface *iface_desc;
@@ -322,7 +337,7 @@ static int lcd_probe(struct usb_interface *interface, const struct usb_device_id
                 retval = -ENODEV;
                 goto error;
         }
-        
+
         /* set up the endpoint information */
         /* use only the first bulk-in and bulk-out endpoints */
         iface_desc = interface->cur_altsetting;
@@ -332,7 +347,7 @@ static int lcd_probe(struct usb_interface *interface, const struct usb_device_id
                 if (!dev->bulk_in_endpointAddr &&
                     usb_endpoint_is_bulk_in(endpoint)) {
                         /* we found a bulk in endpoint */
-                        buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+                        buffer_size = usb_endpoint_maxp(endpoint);
                         dev->bulk_in_size = buffer_size;
                         dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
                         dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
@@ -369,7 +384,7 @@ static int lcd_probe(struct usb_interface *interface, const struct usb_device_id
 
         dev_info(&interface->dev, "USBLCD Version %1d%1d.%1d%1d found "
                  "at address %d\n", (i & 0xF000)>>12, (i & 0xF00)>>8,
-                 (i & 0xF0)>>4,(i & 0xF), dev->udev->devnum);
+                 (i & 0xF0)>>4, (i & 0xF), dev->udev->devnum);
 
         /* let the user know what node this device is now attached to */
         dev_info(&interface->dev, "USB LCD device now attached to USBLCD-%d\n",
@@ -401,7 +416,7 @@ static int lcd_suspend(struct usb_interface *intf, pm_message_t message)
         return 0;
 }
 
-static int lcd_resume (struct usb_interface *intf)
+static int lcd_resume(struct usb_interface *intf)
 {
         return 0;
 }
@@ -409,16 +424,16 @@ static int lcd_resume (struct usb_interface *intf)
 static void lcd_disconnect(struct usb_interface *interface)
 {
         struct usb_lcd *dev;
-        int minor = interface->minor;
+        int minor = interface->minor;
 
         mutex_lock(&open_disc_mutex);
-        dev = usb_get_intfdata(interface);
-        usb_set_intfdata(interface, NULL);
+        dev = usb_get_intfdata(interface);
+        usb_set_intfdata(interface, NULL);
         mutex_unlock(&open_disc_mutex);
 
-        /* give back our minor */
-        usb_deregister_dev(interface, &lcd_class);
- 
+        /* give back our minor */
+        usb_deregister_dev(interface, &lcd_class);
+
         /* decrement our usage count */
         kref_put(&dev->kref, lcd_delete);
 
@@ -438,7 +453,7 @@ static struct usb_driver lcd_driver = {
 static int __init usb_lcd_init(void)
 {
         int result;
-        
+
         result = usb_register(&lcd_driver);
         if (result)
                 err("usb_register failed. Error number %d", result);
diff --git a/drivers/usb/misc/usbled.c b/drivers/usb/misc/usbled.c
index 1616ad1793a4..43f84e50d514 100644
--- a/drivers/usb/misc/usbled.c
+++ b/drivers/usb/misc/usbled.c
@@ -33,10 +33,10 @@ static const struct usb_device_id id_table[] = {
                         .driver_info = DREAM_CHEEKY_WEBMAIL_NOTIFIER },
         { },
 };
-MODULE_DEVICE_TABLE (usb, id_table);
+MODULE_DEVICE_TABLE(usb, id_table);
 
 struct usb_led {
-        struct usb_device *     udev;
+        struct usb_device       *udev;
         unsigned char           blue;
         unsigned char           red;
         unsigned char           green;
@@ -113,14 +113,16 @@ static void change_color(struct usb_led *led)
 }
 
 #define show_set(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf)               \
+static ssize_t show_##value(struct device *dev, struct device_attribute *attr,\
+                            char *buf)                                  \
 {                                                                       \
         struct usb_interface *intf = to_usb_interface(dev);             \
         struct usb_led *led = usb_get_intfdata(intf);                   \
                                                                         \
         return sprintf(buf, "%d\n", led->value);                        \
 }                                                                       \
-static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)    \
+static ssize_t set_##value(struct device *dev, struct device_attribute *attr,\
+                           const char *buf, size_t count)               \
 {                                                                       \
         struct usb_interface *intf = to_usb_interface(dev);             \
         struct usb_led *led = usb_get_intfdata(intf);                   \
@@ -135,7 +137,8 @@ show_set(blue);
 show_set(red);
 show_set(green);
 
-static int led_probe(struct usb_interface *interface, const struct usb_device_id *id)
+static int led_probe(struct usb_interface *interface,
+                     const struct usb_device_id *id)
 {
         struct usb_device *udev = interface_to_usbdev(interface);
         struct usb_led *dev = NULL;
@@ -150,7 +153,7 @@ static int led_probe(struct usb_interface *interface, const struct usb_device_id
         dev->udev = usb_get_dev(udev);
         dev->type = id->driver_info;
 
-        usb_set_intfdata (interface, dev);
+        usb_set_intfdata(interface, dev);
 
         retval = device_create_file(&interface->dev, &dev_attr_blue);
         if (retval)
@@ -194,7 +197,7 @@ error:
         device_remove_file(&interface->dev, &dev_attr_blue);
         device_remove_file(&interface->dev, &dev_attr_red);
         device_remove_file(&interface->dev, &dev_attr_green);
-        usb_set_intfdata (interface, NULL);
+        usb_set_intfdata(interface, NULL);
         usb_put_dev(dev->udev);
         kfree(dev);
 error_mem:
@@ -205,14 +208,14 @@ static void led_disconnect(struct usb_interface *interface)
 {
         struct usb_led *dev;
 
-        dev = usb_get_intfdata (interface);
+        dev = usb_get_intfdata(interface);
 
         device_remove_file(&interface->dev, &dev_attr_blue);
         device_remove_file(&interface->dev, &dev_attr_red);
         device_remove_file(&interface->dev, &dev_attr_green);
 
         /* first remove the files, then set the pointer to NULL */
-        usb_set_intfdata (interface, NULL);
+        usb_set_intfdata(interface, NULL);
 
         usb_put_dev(dev->udev);
 
@@ -243,8 +246,8 @@ static void __exit usb_led_exit(void)
         usb_deregister(&led_driver);
 }
 
-module_init (usb_led_init);
-module_exit (usb_led_exit);
+module_init(usb_led_init);
+module_exit(usb_led_exit);
 
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index bb10846affc3..bd6d00802eab 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -359,8 +359,10 @@ static int simple_io(
         urb->context = &completion;
         while (retval == 0 && iterations-- > 0) {
                 init_completion(&completion);
-                if (usb_pipeout(urb->pipe))
+                if (usb_pipeout(urb->pipe)) {
                         simple_fill_buf(urb);
+                        urb->transfer_flags |= URB_ZERO_PACKET;
+                }
                 retval = usb_submit_urb(urb, GFP_KERNEL);
                 if (retval != 0)
                         break;
@@ -1583,8 +1585,8 @@ static struct urb *iso_alloc_urb(
 
         if (bytes < 0 || !desc)
                 return NULL;
-        maxp = 0x7ff & le16_to_cpu(desc->wMaxPacketSize);
-        maxp *= 1 + (0x3 & (le16_to_cpu(desc->wMaxPacketSize) >> 11));
+        maxp = 0x7ff & usb_endpoint_maxp(desc);
+        maxp *= 1 + (0x3 & (usb_endpoint_maxp(desc) >> 11));
         packets = DIV_ROUND_UP(bytes, maxp);
 
         urb = usb_alloc_urb(packets, GFP_KERNEL);
@@ -1654,7 +1656,7 @@ test_iso_queue(struct usbtest_dev *dev, struct usbtest_param *param,
                 "... iso period %d %sframes, wMaxPacket %04x\n",
                 1 << (desc->bInterval - 1),
                 (udev->speed == USB_SPEED_HIGH) ? "micro" : "",
-                le16_to_cpu(desc->wMaxPacketSize));
+                usb_endpoint_maxp(desc));
 
         for (i = 0; i < param->sglen; i++) {
                 urbs[i] = iso_alloc_urb(udev, pipe, desc,
@@ -2298,25 +2300,8 @@ usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id)
 
         usb_set_intfdata(intf, dev);
         dev_info(&intf->dev, "%s\n", info->name);
-        dev_info(&intf->dev, "%s speed {control%s%s%s%s%s} tests%s\n",
-                        ({ char *tmp;
-                        switch (udev->speed) {
-                        case USB_SPEED_LOW:
-                                tmp = "low";
-                                break;
-                        case USB_SPEED_FULL:
-                                tmp = "full";
-                                break;
-                        case USB_SPEED_HIGH:
-                                tmp = "high";
-                                break;
-                        case USB_SPEED_SUPER:
-                                tmp = "super";
-                                break;
-                        default:
-                                tmp = "unknown";
-                                break;
-                        }; tmp; }),
+        dev_info(&intf->dev, "%s {control%s%s%s%s%s} tests%s\n",
+                        usb_speed_string(udev->speed),
                         info->ctrl_out ? " in/out" : "",
                         rtest, wtest,
                         irtest, iwtest,
diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c
index a09dbd243eb3..a04b2ff9dd83 100644
--- a/drivers/usb/mon/mon_bin.c
+++ b/drivers/usb/mon/mon_bin.c
@@ -1101,7 +1101,7 @@ static long mon_bin_ioctl(struct file *file, unsigned int cmd, unsigned long arg
                 nevents = mon_bin_queued(rp);
 
                 sp = (struct mon_bin_stats __user *)arg;
-                if (put_user(rp->cnt_lost, &sp->dropped))
+                if (put_user(ndropped, &sp->dropped))
                         return -EFAULT;
                 if (put_user(nevents, &sp->queued))
                         return -EFAULT;
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index fe8d14cac436..ae4a20acef6c 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -634,6 +634,7 @@ static void rxstate(struct musb *musb, struct musb_request *req)
         u16                     len;
         u16                     csr = musb_readw(epio, MUSB_RXCSR);
         struct musb_hw_ep       *hw_ep = &musb->endpoints[epnum];
+        u8                      use_mode_1;
 
         if (hw_ep->is_shared_fifo)
                 musb_ep = &hw_ep->ep_in;
@@ -683,6 +684,18 @@ static void rxstate(struct musb *musb, struct musb_request *req)
 
         if (csr & MUSB_RXCSR_RXPKTRDY) {
                 len = musb_readw(epio, MUSB_RXCOUNT);
+
+                /*
+                 * Enable Mode 1 on RX transfers only when short_not_ok flag
+                 * is set. Currently short_not_ok flag is set only from
+                 * file_storage and f_mass_storage drivers
+                 */
+
+                if (request->short_not_ok && len == musb_ep->packet_sz)
+                        use_mode_1 = 1;
+                else
+                        use_mode_1 = 0;
+
                 if (request->actual < request->length) {
 #ifdef CONFIG_USB_INVENTRA_DMA
                         if (is_buffer_mapped(req)) {
@@ -714,37 +727,41 @@ static void rxstate(struct musb *musb, struct musb_request *req)
          * then becomes usable as a runtime "use mode 1" hint...
          */
 
-                                csr |= MUSB_RXCSR_DMAENAB;
-#ifdef USE_MODE1
-                                csr |= MUSB_RXCSR_AUTOCLEAR;
-                                /* csr |= MUSB_RXCSR_DMAMODE; */
-
-                                /* this special sequence (enabling and then
-                                 * disabling MUSB_RXCSR_DMAMODE) is required
-                                 * to get DMAReq to activate
-                                 */
-                                musb_writew(epio, MUSB_RXCSR,
-                                        csr | MUSB_RXCSR_DMAMODE);
-#else
-                                if (!musb_ep->hb_mult &&
-                                        musb_ep->hw_ep->rx_double_buffered)
+                                /* Experimental: Mode1 works with mass storage use cases */
+                                if (use_mode_1) {
                                         csr |= MUSB_RXCSR_AUTOCLEAR;
-#endif
-                                musb_writew(epio, MUSB_RXCSR, csr);
+                                        musb_writew(epio, MUSB_RXCSR, csr);
+                                        csr |= MUSB_RXCSR_DMAENAB;
+                                        musb_writew(epio, MUSB_RXCSR, csr);
+
+                                        /*
+                                         * this special sequence (enabling and then
+                                         * disabling MUSB_RXCSR_DMAMODE) is required
+                                         * to get DMAReq to activate
+                                         */
+                                        musb_writew(epio, MUSB_RXCSR,
+                                                csr | MUSB_RXCSR_DMAMODE);
+                                        musb_writew(epio, MUSB_RXCSR, csr);
+
+                                } else {
+                                        if (!musb_ep->hb_mult &&
+                                                musb_ep->hw_ep->rx_double_buffered)
+                                                csr |= MUSB_RXCSR_AUTOCLEAR;
+                                        csr |= MUSB_RXCSR_DMAENAB;
+                                        musb_writew(epio, MUSB_RXCSR, csr);
+                                }
 
                                 if (request->actual < request->length) {
                                         int transfer_size = 0;
-#ifdef USE_MODE1
-                                        transfer_size = min(request->length - request->actual,
-                                                        channel->max_len);
-#else
-                                        transfer_size = min(request->length - request->actual,
-                                                        (unsigned)len);
-#endif
-                                        if (transfer_size <= musb_ep->packet_sz)
-                                                musb_ep->dma->desired_mode = 0;
-                                        else
+                                        if (use_mode_1) {
+                                                transfer_size = min(request->length - request->actual,
+                                                                channel->max_len);
                                                 musb_ep->dma->desired_mode = 1;
+                                        } else {
+                                                transfer_size = min(request->length - request->actual,
+                                                                (unsigned)len);
+                                                musb_ep->dma->desired_mode = 0;
+                                        }
 
                                         use_dma = c->channel_program(
                                                         channel,
@@ -1020,7 +1037,7 @@ static int musb_gadget_enable(struct usb_ep *ep,
                 goto fail;
 
         /* REVISIT this rules out high bandwidth periodic transfers */
-        tmp = le16_to_cpu(desc->wMaxPacketSize);
+        tmp = usb_endpoint_maxp(desc);
         if (tmp & ~0x07ff) {
                 int ok;
 
diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c
index 9378b359c1f0..6a0d0467ec74 100644
--- a/drivers/usb/musb/musb_gadget_ep0.c
+++ b/drivers/usb/musb/musb_gadget_ep0.c
@@ -679,6 +679,14 @@ irqreturn_t musb_g_ep0_irq(struct musb *musb)
                         musb_readb(mbase, MUSB_FADDR),
                         decode_ep0stage(musb->ep0_state));
 
+        if (csr & MUSB_CSR0_P_DATAEND) {
+                /*
+                 * If DATAEND is set we should not call the callback,
+                 * hence the status stage is not complete.
+                 */
+                return IRQ_HANDLED;
+        }
+
         /* I sent a stall.. need to acknowledge it now.. */
         if (csr & MUSB_CSR0_P_SENTSTALL) {
                 musb_writew(regs, MUSB_CSR0,
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 8b2473fa0f47..60ddba8066ea 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -1932,7 +1932,7 @@ static int musb_urb_enqueue(
         INIT_LIST_HEAD(&qh->ring);
         qh->is_ready = 1;
 
-        qh->maxpacket = le16_to_cpu(epd->wMaxPacketSize);
+        qh->maxpacket = usb_endpoint_maxp(epd);
         qh->type = usb_endpoint_type(epd);
 
         /* Bits 11 & 12 of wMaxPacketSize encode high bandwidth multiplier.
diff --git a/drivers/usb/musb/musbhsdma.c b/drivers/usb/musb/musbhsdma.c
index f70c5a577736..57a608584e16 100644
--- a/drivers/usb/musb/musbhsdma.c
+++ b/drivers/usb/musb/musbhsdma.c
@@ -408,7 +408,7 @@ dma_controller_create(struct musb *musb, void __iomem *base)
         controller->controller.channel_program = dma_channel_program;
         controller->controller.channel_abort = dma_channel_abort;
 
-        if (request_irq(irq, dma_controller_irq, IRQF_DISABLED,
+        if (request_irq(irq, dma_controller_irq, 0,
                         dev_name(musb->controller), &controller->controller)) {
                 dev_err(dev, "request_irq %d failed!\n", irq);
                 dma_controller_destroy(&controller->controller);
diff --git a/drivers/usb/otg/isp1301_omap.c b/drivers/usb/otg/isp1301_omap.c
index ca9b690a7e40..8c86787c2f09 100644
--- a/drivers/usb/otg/isp1301_omap.c
+++ b/drivers/usb/otg/isp1301_omap.c
@@ -899,7 +899,7 @@ static int otg_bind(struct isp1301 *isp)
 
         if (otg_dev)
                 status = request_irq(otg_dev->resource[1].start, omap_otg_irq,
-                                IRQF_DISABLED, DRIVER_NAME, isp);
+                                0, DRIVER_NAME, isp);
         else
                 status = -ENODEV;
 
diff --git a/drivers/usb/otg/twl6030-usb.c b/drivers/usb/otg/twl6030-usb.c
index b4d2c0972b3d..ed2b26cfe814 100644
--- a/drivers/usb/otg/twl6030-usb.c
+++ b/drivers/usb/otg/twl6030-usb.c
@@ -137,22 +137,6 @@ static inline u8 twl6030_readb(struct twl6030_usb *twl, u8 module, u8 address)
         return ret;
 }
 
-/*-------------------------------------------------------------------------*/
-static int twl6030_set_phy_clk(struct otg_transceiver *x, int on)
-{
-        struct twl6030_usb *twl;
-        struct device *dev;
-        struct twl4030_usb_data *pdata;
-
-        twl = xceiv_to_twl(x);
-        dev  = twl->dev;
-        pdata = dev->platform_data;
-
-        pdata->phy_set_clock(twl->dev, on);
-
-        return 0;
-}
-
 static int twl6030_phy_init(struct otg_transceiver *x)
 {
         struct twl6030_usb *twl;
diff --git a/drivers/usb/renesas_usbhs/Kconfig b/drivers/usb/renesas_usbhs/Kconfig
index 286cbf1ca7de..6f4afa436381 100644
--- a/drivers/usb/renesas_usbhs/Kconfig
+++ b/drivers/usb/renesas_usbhs/Kconfig
@@ -4,7 +4,7 @@
 
 config USB_RENESAS_USBHS
         tristate 'Renesas USBHS controller'
-        depends on SUPERH || ARCH_SHMOBILE
+        depends on USB && USB_GADGET
         default n
         help
           Renesas USBHS is a discrete USB host and peripheral controller chip
diff --git a/drivers/usb/renesas_usbhs/Makefile b/drivers/usb/renesas_usbhs/Makefile
index ce08345fa15a..bc8aef4311a1 100644
--- a/drivers/usb/renesas_usbhs/Makefile
+++ b/drivers/usb/renesas_usbhs/Makefile
@@ -6,4 +6,10 @@ obj-$(CONFIG_USB_RENESAS_USBHS)	+= renesas_usbhs.o
 
 renesas_usbhs-y                 := common.o mod.o pipe.o fifo.o
 
-renesas_usbhs-$(CONFIG_USB_RENESAS_USBHS_UDC)   += mod_gadget.o
+ifneq ($(CONFIG_USB_RENESAS_USBHS_HCD),)
+        renesas_usbhs-y         += mod_host.o
+endif
+
+ifneq ($(CONFIG_USB_RENESAS_USBHS_UDC),)
+        renesas_usbhs-y         += mod_gadget.o
+endif
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index d8239e5efa66..d2e2efaba658 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -61,8 +61,8 @@
  */
 #define usbhs_platform_call(priv, func, args...)\
         (!(priv) ? -ENODEV :                    \
-         !((priv)->pfunc->func) ? 0 :           \
-         (priv)->pfunc->func(args))
+         !((priv)->pfunc.func) ? 0 :            \
+         (priv)->pfunc.func(args))
 
 /*
  *              common functions
@@ -114,6 +114,10 @@ void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable)
 {
         u16 mask = DCFM | DRPD | DPRPU;
         u16 val  = DCFM | DRPD;
+        int has_otg = usbhs_get_dparam(priv, has_otg);
+
+        if (has_otg)
+                usbhs_bset(priv, DVSTCTR, (EXTLP | PWEN), (EXTLP | PWEN));
 
         /*
          * if enable
@@ -147,19 +151,133 @@ int usbhs_frame_get_num(struct usbhs_priv *priv)
 }
 
 /*
+ *              usb request functions
+ */
+void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
+{
+        u16 val;
+
+        val = usbhs_read(priv, USBREQ);
+        req->bRequest           = (val >> 8) & 0xFF;
+        req->bRequestType       = (val >> 0) & 0xFF;
+
+        req->wValue     = usbhs_read(priv, USBVAL);
+        req->wIndex     = usbhs_read(priv, USBINDX);
+        req->wLength    = usbhs_read(priv, USBLENG);
+}
+
+void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
+{
+        usbhs_write(priv, USBREQ,  (req->bRequest << 8) | req->bRequestType);
+        usbhs_write(priv, USBVAL,  req->wValue);
+        usbhs_write(priv, USBINDX, req->wIndex);
+        usbhs_write(priv, USBLENG, req->wLength);
+
+        usbhs_bset(priv, DCPCTR, SUREQ, SUREQ);
+}
+
+/*
+ *              bus/vbus functions
+ */
+void usbhs_bus_send_sof_enable(struct usbhs_priv *priv)
+{
+        u16 status = usbhs_read(priv, DVSTCTR) & (USBRST | UACT);
+
+        if (status != USBRST) {
+                struct device *dev = usbhs_priv_to_dev(priv);
+                dev_err(dev, "usbhs should be reset\n");
+        }
+
+        usbhs_bset(priv, DVSTCTR, (USBRST | UACT), UACT);
+}
+
+void usbhs_bus_send_reset(struct usbhs_priv *priv)
+{
+        usbhs_bset(priv, DVSTCTR, (USBRST | UACT), USBRST);
+}
+
+int usbhs_bus_get_speed(struct usbhs_priv *priv)
+{
+        u16 dvstctr = usbhs_read(priv, DVSTCTR);
+
+        switch (RHST & dvstctr) {
+        case RHST_LOW_SPEED:
+                return USB_SPEED_LOW;
+        case RHST_FULL_SPEED:
+                return USB_SPEED_FULL;
+        case RHST_HIGH_SPEED:
+                return USB_SPEED_HIGH;
+        }
+
+        return USB_SPEED_UNKNOWN;
+}
+
+int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable)
+{
+        struct platform_device *pdev = usbhs_priv_to_pdev(priv);
+
+        return usbhs_platform_call(priv, set_vbus, pdev, enable);
+}
+
+static void usbhsc_bus_init(struct usbhs_priv *priv)
+{
+        usbhs_write(priv, DVSTCTR, 0);
+
+        usbhs_vbus_ctrl(priv, 0);
+}
+
+/*
+ *              device configuration
+ */
+int usbhs_set_device_speed(struct usbhs_priv *priv, int devnum,
+                           u16 upphub, u16 hubport, u16 speed)
+{
+        struct device *dev = usbhs_priv_to_dev(priv);
+        u16 usbspd = 0;
+        u32 reg = DEVADD0 + (2 * devnum);
+
+        if (devnum > 10) {
+                dev_err(dev, "cannot set speed to unknown device %d\n", devnum);
+                return -EIO;
+        }
+
+        if (upphub > 0xA) {
+                dev_err(dev, "unsupported hub number %d\n", upphub);
+                return -EIO;
+        }
+
+        switch (speed) {
+        case USB_SPEED_LOW:
+                usbspd = USBSPD_SPEED_LOW;
+                break;
+        case USB_SPEED_FULL:
+                usbspd = USBSPD_SPEED_FULL;
+                break;
+        case USB_SPEED_HIGH:
+                usbspd = USBSPD_SPEED_HIGH;
+                break;
+        default:
+                dev_err(dev, "unsupported speed %d\n", speed);
+                return -EIO;
+        }
+
+        usbhs_write(priv, reg,  UPPHUB(upphub)  |
+                                HUBPORT(hubport)|
+                                USBSPD(usbspd));
+
+        return 0;
+}
+
+/*
  *              local functions
  */
-static void usbhsc_bus_ctrl(struct usbhs_priv *priv, int enable)
+static void usbhsc_set_buswait(struct usbhs_priv *priv)
 {
         int wait = usbhs_get_dparam(priv, buswait_bwait);
-        u16 data = 0;
 
-        if (enable) {
-                /* set bus wait if platform have */
-                if (wait)
-                        usbhs_bset(priv, BUSWAIT, 0x000F, wait);
-        }
-        usbhs_write(priv, DVSTCTR, data);
+        /* set bus wait if platform have */
+        if (wait)
+                usbhs_bset(priv, BUSWAIT, 0x000F, wait);
 }
 
 /*
@@ -191,10 +309,8 @@ static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
 
                 /* USB on */
                 usbhs_sys_clock_ctrl(priv, enable);
-                usbhsc_bus_ctrl(priv, enable);
         } else {
                 /* USB off */
-                usbhsc_bus_ctrl(priv, enable);
                 usbhs_sys_clock_ctrl(priv, enable);
 
                 /* disable PM */
@@ -203,13 +319,10 @@ static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
 }
 
 /*
- *              notify hotplug
+ *              hotplug
  */
-static void usbhsc_notify_hotplug(struct work_struct *work)
+static void usbhsc_hotplug(struct usbhs_priv *priv)
 {
-        struct usbhs_priv *priv = container_of(work,
-                                               struct usbhs_priv,
-                                               notify_hotplug_work.work);
         struct platform_device *pdev = usbhs_priv_to_pdev(priv);
         struct usbhs_mod *mod = usbhs_mod_get_current(priv);
         int id;
@@ -237,6 +350,10 @@ static void usbhsc_notify_hotplug(struct work_struct *work)
                 if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
                         usbhsc_power_ctrl(priv, enable);
 
+                /* bus init */
+                usbhsc_set_buswait(priv);
+                usbhsc_bus_init(priv);
+
                 /* module start */
                 usbhs_mod_call(priv, start, priv);
 
@@ -246,6 +363,9 @@ static void usbhsc_notify_hotplug(struct work_struct *work)
                 /* module stop */
                 usbhs_mod_call(priv, stop, priv);
 
+                /* bus init */
+                usbhsc_bus_init(priv);
+
                 /* power off */
                 if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
                         usbhsc_power_ctrl(priv, enable);
@@ -257,6 +377,17 @@ static void usbhsc_notify_hotplug(struct work_struct *work)
         }
 }
 
+/*
+ *              notify hotplug
+ */
+static void usbhsc_notify_hotplug(struct work_struct *work)
+{
+        struct usbhs_priv *priv = container_of(work,
+                                               struct usbhs_priv,
+                                               notify_hotplug_work.work);
+        usbhsc_hotplug(priv);
+}
+
 int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev)
 {
         struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
@@ -315,24 +446,28 @@ static int __devinit usbhs_probe(struct platform_device *pdev)
         /*
          * care platform info
          */
-        priv->pfunc     = &info->platform_callback;
-        priv->dparam    = &info->driver_param;
+        memcpy(&priv->pfunc,
+               &info->platform_callback,
+               sizeof(struct renesas_usbhs_platform_callback));
+        memcpy(&priv->dparam,
+               &info->driver_param,
+               sizeof(struct renesas_usbhs_driver_param));
 
         /* set driver callback functions for platform */
         dfunc                   = &info->driver_callback;
         dfunc->notify_hotplug   = usbhsc_drvcllbck_notify_hotplug;
 
         /* set default param if platform doesn't have */
-        if (!priv->dparam->pipe_type) {
-                priv->dparam->pipe_type = usbhsc_default_pipe_type;
-                priv->dparam->pipe_size = ARRAY_SIZE(usbhsc_default_pipe_type);
+        if (!priv->dparam.pipe_type) {
+                priv->dparam.pipe_type = usbhsc_default_pipe_type;
+                priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_default_pipe_type);
         }
-        if (!priv->dparam->pio_dma_border)
-                priv->dparam->pio_dma_border = 64; /* 64byte */
+        if (!priv->dparam.pio_dma_border)
+                priv->dparam.pio_dma_border = 64; /* 64byte */
 
         /* FIXME */
         /* runtime power control ? */
-        if (priv->pfunc->get_vbus)
+        if (priv->pfunc.get_vbus)
                 usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL);
 
         /*
@@ -443,9 +578,60 @@ static int __devexit usbhs_remove(struct platform_device *pdev)
         return 0;
 }
 
+static int usbhsc_suspend(struct device *dev)
+{
+        struct usbhs_priv *priv = dev_get_drvdata(dev);
+        struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+
+        if (mod) {
+                usbhs_mod_call(priv, stop, priv);
+                usbhs_mod_change(priv, -1);
+        }
+
+        if (mod || !usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
+                usbhsc_power_ctrl(priv, 0);
+
+        return 0;
+}
+
+static int usbhsc_resume(struct device *dev)
+{
+        struct usbhs_priv *priv = dev_get_drvdata(dev);
+        struct platform_device *pdev = usbhs_priv_to_pdev(priv);
+
+        usbhs_platform_call(priv, phy_reset, pdev);
+
+        if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
+                usbhsc_power_ctrl(priv, 1);
+
+        usbhsc_hotplug(priv);
+
+        return 0;
+}
+
+static int usbhsc_runtime_nop(struct device *dev)
+{
+        /* Runtime PM callback shared between ->runtime_suspend()
+         * and ->runtime_resume(). Simply returns success.
+         *
+         * This driver re-initializes all registers after
+         * pm_runtime_get_sync() anyway so there is no need
+         * to save and restore registers here.
+         */
+        return 0;
+}
+
+static const struct dev_pm_ops usbhsc_pm_ops = {
+        .suspend                = usbhsc_suspend,
+        .resume                 = usbhsc_resume,
+        .runtime_suspend        = usbhsc_runtime_nop,
+        .runtime_resume         = usbhsc_runtime_nop,
+};
+
 static struct platform_driver renesas_usbhs_driver = {
         .driver         = {
                 .name   = "renesas_usbhs",
+                .pm     = &usbhsc_pm_ops,
         },
         .probe          = usbhs_probe,
         .remove         = __devexit_p(usbhs_remove),
diff --git a/drivers/usb/renesas_usbhs/common.h b/drivers/usb/renesas_usbhs/common.h
index b410463a1212..8729da5c3be6 100644
--- a/drivers/usb/renesas_usbhs/common.h
+++ b/drivers/usb/renesas_usbhs/common.h
@@ -90,6 +90,17 @@ struct usbhs_priv;
 #define PIPE9TRN        0x00BA
 #define PIPEATRE        0x00BC
 #define PIPEATRN        0x00BE
+#define DEVADD0         0x00D0 /* Device address n configuration */
+#define DEVADD1         0x00D2
+#define DEVADD2         0x00D4
+#define DEVADD3         0x00D6
+#define DEVADD4         0x00D8
+#define DEVADD5         0x00DA
+#define DEVADD6         0x00DC
+#define DEVADD7         0x00DE
+#define DEVADD8         0x00E0
+#define DEVADD9         0x00E2
+#define DEVADDA         0x00E4
 
 /* SYSCFG */
 #define SCKE    (1 << 10)       /* USB Module Clock Enable */
@@ -102,6 +113,8 @@ struct usbhs_priv;
 /* DVSTCTR */
 #define EXTLP   (1 << 10)       /* Controls the EXTLP pin output state */
 #define PWEN    (1 << 9)        /* Controls the PWEN pin output state */
+#define USBRST  (1 << 6)        /* Bus Reset Output */
+#define UACT    (1 << 4)        /* USB Bus Enable */
 #define RHST    (0x7)           /* Reset Handshake */
 #define  RHST_LOW_SPEED  1      /* Low-speed connection */
 #define  RHST_FULL_SPEED 2      /* Full-speed connection */
@@ -159,6 +172,15 @@ struct usbhs_priv;
 #define  NODATA_STATUS_STAGE    5       /* Control write NoData status stage */
 #define  SEQUENCE_ERROR         6       /* Control transfer sequence error */
 
+/* INTSTS1 */
+#define OVRCR   (1 << 15) /* OVRCR Interrupt Status */
+#define BCHG    (1 << 14) /* USB Bus Change Interrupt Status */
+#define DTCH    (1 << 12) /* USB Disconnection Detect Interrupt Status */
+#define ATTCH   (1 << 11) /* ATTCH Interrupt Status */
+#define EOFERR  (1 << 6)  /* EOF Error Detect Interrupt Status */
+#define SIGN    (1 << 5)  /* Setup Transaction Error Interrupt Status */
+#define SACK    (1 << 4)  /* Setup Transaction ACK Response Interrupt Status */
+
 /* PIPECFG */
 /* DCPCFG */
 #define TYPE_NONE       (0 << 14)       /* Transfer Type */
@@ -183,9 +205,11 @@ struct usbhs_priv;
 /* PIPEnCTR */
 /* DCPCTR */
 #define BSTS            (1 << 15)       /* Buffer Status */
+#define SUREQ           (1 << 14)       /* Sending SETUP Token */
 #define CSSTS           (1 << 12)       /* CSSTS Status */
-#define SQCLR           (1 << 8)        /* Toggle Bit Clear */
 #define ACLRM           (1 << 9)        /* Buffer Auto-Clear Mode */
+#define SQCLR           (1 << 8)        /* Toggle Bit Clear */
+#define SQSET           (1 << 7)        /* Toggle Bit Set */
 #define PBUSY           (1 << 5)        /* Pipe Busy */
 #define PID_MASK        (0x3)           /* Response PID */
 #define  PID_NAK        0
@@ -202,6 +226,14 @@ struct usbhs_priv;
 /* FRMNUM */
 #define FRNM_MASK       (0x7FF)
 
+/* DEVADDn */
+#define UPPHUB(x)       (((x) & 0xF) << 11)     /* HUB Register */
+#define HUBPORT(x)      (((x) & 0x7) << 8)      /* HUB Port for Target Device */
+#define USBSPD(x)       (((x) & 0x3) << 6)      /* Device Transfer Rate */
+#define USBSPD_SPEED_LOW        0x1
+#define USBSPD_SPEED_FULL       0x2
+#define USBSPD_SPEED_HIGH       0x3
+
 /*
  *              struct
  */
@@ -210,8 +242,8 @@ struct usbhs_priv {
         void __iomem *base;
         unsigned int irq;
 
-        struct renesas_usbhs_platform_callback  *pfunc;
-        struct renesas_usbhs_driver_param       *dparam;
+        struct renesas_usbhs_platform_callback  pfunc;
+        struct renesas_usbhs_driver_param       dparam;
 
         struct delayed_work notify_hotplug_work;
         struct platform_device *pdev;
@@ -258,15 +290,35 @@ void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable);
 void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable);
 
 /*
+ * usb request
+ */
+void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req);
+void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req);
+
+/*
+ * bus
+ */
+void usbhs_bus_send_sof_enable(struct usbhs_priv *priv);
+void usbhs_bus_send_reset(struct usbhs_priv *priv);
+int usbhs_bus_get_speed(struct usbhs_priv *priv);
+int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable);
+
+/*
  * frame
  */
 int usbhs_frame_get_num(struct usbhs_priv *priv);
 
 /*
+ * device config
+ */
+int usbhs_set_device_speed(struct usbhs_priv *priv, int devnum, u16 upphub,
+                           u16 hubport, u16 speed);
+
+/*
  * data
  */
 struct usbhs_priv *usbhs_pdev_to_priv(struct platform_device *pdev);
-#define usbhs_get_dparam(priv, param)   (priv->dparam->param)
+#define usbhs_get_dparam(priv, param)   (priv->dparam.param)
 #define usbhs_priv_to_pdev(priv)        (priv->pdev)
 #define usbhs_priv_to_dev(priv)         (&priv->pdev->dev)
 #define usbhs_priv_to_lock(priv)        (&priv->lock)
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index a34430f55fb7..8da685e796d1 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -54,35 +54,45 @@ static struct usbhs_pkt_handle usbhsf_null_handler = {
 };
 
 void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
-                    struct usbhs_pkt_handle *handler,
+                    void (*done)(struct usbhs_priv *priv,
+                                 struct usbhs_pkt *pkt),
                     void *buf, int len, int zero)
 {
         struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
         struct device *dev = usbhs_priv_to_dev(priv);
         unsigned long flags;
 
+        if (!done) {
+                dev_err(dev, "no done function\n");
+                return;
+        }
+
         /********************  spin lock ********************/
         usbhs_lock(priv, flags);
 
-        if (!handler) {
+        if (!pipe->handler) {
                 dev_err(dev, "no handler function\n");
-                handler = &usbhsf_null_handler;
+                pipe->handler = &usbhsf_null_handler;
         }
 
         list_del_init(&pkt->node);
         list_add_tail(&pkt->node, &pipe->list);
 
+        /*
+         * each pkt must hold own handler.
+         * because handler might be changed by its situation.
+         * dma handler -> pio handler.
+         */
         pkt->pipe       = pipe;
         pkt->buf        = buf;
-        pkt->handler    = handler;
+        pkt->handler    = pipe->handler;
         pkt->length     = len;
         pkt->zero       = zero;
         pkt->actual     = 0;
+        pkt->done       = done;
 
         usbhs_unlock(priv, flags);
         /********************  spin unlock ******************/
-
-        usbhs_pkt_start(pipe);
 }
 
 static void __usbhsf_pkt_del(struct usbhs_pkt *pkt)
@@ -118,10 +128,15 @@ struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt)
         return pkt;
 }
 
-int __usbhs_pkt_handler(struct usbhs_pipe *pipe, int type)
+enum {
+        USBHSF_PKT_PREPARE,
+        USBHSF_PKT_TRY_RUN,
+        USBHSF_PKT_DMA_DONE,
+};
+
+static int usbhsf_pkt_handler(struct usbhs_pipe *pipe, int type)
 {
         struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
-        struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
         struct usbhs_pkt *pkt;
         struct device *dev = usbhs_priv_to_dev(priv);
         int (*func)(struct usbhs_pkt *pkt, int *is_done);
@@ -161,13 +176,18 @@ __usbhs_pkt_handler_end:
         /********************  spin unlock ******************/
 
         if (is_done) {
-                info->done(pkt);
+                pkt->done(priv, pkt);
                 usbhs_pkt_start(pipe);
         }
 
         return ret;
 }
 
+void usbhs_pkt_start(struct usbhs_pipe *pipe)
+{
+        usbhsf_pkt_handler(pipe, USBHSF_PKT_PREPARE);
+}
+
 /*
  *              irq enable/disable function
  */
@@ -276,9 +296,13 @@ static int usbhsf_fifo_select(struct usbhs_pipe *pipe,
             usbhsf_fifo_is_busy(fifo))
                 return -EBUSY;
 
-        if (usbhs_pipe_is_dcp(pipe))
+        if (usbhs_pipe_is_dcp(pipe)) {
                 base |= (1 == write) << 5;      /* ISEL */
 
+                if (usbhs_mod_is_host(priv))
+                        usbhs_dcp_dir_for_host(pipe, write);
+        }
+
         /* "base" will be used below  */
         usbhs_write(priv, fifo->sel, base | MBW_32);
 
@@ -297,6 +321,151 @@ static int usbhsf_fifo_select(struct usbhs_pipe *pipe,
 }
 
 /*
+ *              DCP status stage
+ */
+static int usbhs_dcp_dir_switch_to_write(struct usbhs_pkt *pkt, int *is_done)
+{
+        struct usbhs_pipe *pipe = pkt->pipe;
+        struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+        struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */
+        struct device *dev = usbhs_priv_to_dev(priv);
+        int ret;
+
+        usbhs_pipe_disable(pipe);
+
+        ret = usbhsf_fifo_select(pipe, fifo, 1);
+        if (ret < 0) {
+                dev_err(dev, "%s() faile\n", __func__);
+                return ret;
+        }
+
+        usbhs_pipe_sequence_data1(pipe); /* DATA1 */
+
+        usbhsf_fifo_clear(pipe, fifo);
+        usbhsf_send_terminator(pipe, fifo);
+
+        usbhsf_fifo_unselect(pipe, fifo);
+
+        usbhsf_tx_irq_ctrl(pipe, 1);
+        usbhs_pipe_enable(pipe);
+
+        return ret;
+}
+
+static int usbhs_dcp_dir_switch_to_read(struct usbhs_pkt *pkt, int *is_done)
+{
+        struct usbhs_pipe *pipe = pkt->pipe;
+        struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+        struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */
+        struct device *dev = usbhs_priv_to_dev(priv);
+        int ret;
+
+        usbhs_pipe_disable(pipe);
+
+        ret = usbhsf_fifo_select(pipe, fifo, 0);
+        if (ret < 0) {
+                dev_err(dev, "%s() fail\n", __func__);
+                return ret;
+        }
+
+        usbhs_pipe_sequence_data1(pipe); /* DATA1 */
+        usbhsf_fifo_clear(pipe, fifo);
+
+        usbhsf_fifo_unselect(pipe, fifo);
+
+        usbhsf_rx_irq_ctrl(pipe, 1);
+        usbhs_pipe_enable(pipe);
+
+        return ret;
+
+}
+
+static int usbhs_dcp_dir_switch_done(struct usbhs_pkt *pkt, int *is_done)
+{
+        struct usbhs_pipe *pipe = pkt->pipe;
+
+        if (pkt->handler == &usbhs_dcp_status_stage_in_handler)
+                usbhsf_tx_irq_ctrl(pipe, 0);
+        else
+                usbhsf_rx_irq_ctrl(pipe, 0);
+
+        pkt->actual = pkt->length;
+        *is_done = 1;
+
+        return 0;
+}
+
+struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler = {
+        .prepare = usbhs_dcp_dir_switch_to_write,
+        .try_run = usbhs_dcp_dir_switch_done,
+};
+
+struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler = {
+        .prepare = usbhs_dcp_dir_switch_to_read,
+        .try_run = usbhs_dcp_dir_switch_done,
+};
+
+/*
+ *              DCP data stage (push)
+ */
+static int usbhsf_dcp_data_stage_try_push(struct usbhs_pkt *pkt, int *is_done)
+{
+        struct usbhs_pipe *pipe = pkt->pipe;
+
+        usbhs_pipe_sequence_data1(pipe); /* DATA1 */
+
+        /*
+         * change handler to PIO push
+         */
+        pkt->handler = &usbhs_fifo_pio_push_handler;
+
+        return pkt->handler->prepare(pkt, is_done);
+}
+
+struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler = {
+        .prepare = usbhsf_dcp_data_stage_try_push,
+};
+
+/*
+ *              DCP data stage (pop)
+ */
+static int usbhsf_dcp_data_stage_prepare_pop(struct usbhs_pkt *pkt,
+                                             int *is_done)
+{
+        struct usbhs_pipe *pipe = pkt->pipe;
+        struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+        struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv);
+
+        if (usbhs_pipe_is_busy(pipe))
+                return 0;
+
+        /*
+         * prepare pop for DCP should
+         *  - change DCP direction,
+         *  - clear fifo
+         *  - DATA1
+         */
+        usbhs_pipe_disable(pipe);
+
+        usbhs_pipe_sequence_data1(pipe); /* DATA1 */
+
+        usbhsf_fifo_select(pipe, fifo, 0);
+        usbhsf_fifo_clear(pipe, fifo);
+        usbhsf_fifo_unselect(pipe, fifo);
+
+        /*
+         * change handler to PIO pop
+         */
+        pkt->handler = &usbhs_fifo_pio_pop_handler;
+
+        return pkt->handler->prepare(pkt, is_done);
+}
+
+struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler = {
+        .prepare = usbhsf_dcp_data_stage_prepare_pop,
+};
+
+/*
  *              PIO push handler
  */
 static int usbhsf_pio_try_push(struct usbhs_pkt *pkt, int *is_done)
@@ -452,6 +621,20 @@ static int usbhsf_pio_try_pop(struct usbhs_pkt *pkt, int *is_done)
         total_len       = len;
 
         /*
+         * update actual length first here to decide disable pipe.
+         * if this pipe keeps BUF status and all data were popped,
+         * then, next interrupt/token will be issued again
+         */
+        pkt->actual += total_len;
+
+        if ((pkt->actual == pkt->length) ||     /* receive all data */
+            (total_len < maxp)) {               /* short packet */
+                *is_done = 1;
+                usbhsf_rx_irq_ctrl(pipe, 0);
+                usbhs_pipe_disable(pipe);       /* disable pipe first */
+        }
+
+        /*
          * Buffer clear if Zero-Length packet
          *
          * see
@@ -481,16 +664,7 @@ static int usbhsf_pio_try_pop(struct usbhs_pkt *pkt, int *is_done)
                 buf[i] = (data >> ((i & 0x03) * 8)) & 0xff;
         }
 
-        pkt->actual += total_len;
-
 usbhs_fifo_read_end:
-        if ((pkt->actual == pkt->length) ||     /* receive all data */
-            (total_len < maxp)) {               /* short packet */
-                *is_done = 1;
-                usbhsf_rx_irq_ctrl(pipe, 0);
-                usbhs_pipe_disable(pipe);
-        }
-
         dev_dbg(dev, "  recv %d (%d/ %d/ %d/ %d)\n",
                 usbhs_pipe_number(pipe),
                 pkt->length, pkt->actual, *is_done, pkt->zero);
@@ -646,7 +820,7 @@ static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done)
         if (len % 4) /* 32bit alignment */
                 goto usbhsf_pio_prepare_push;
 
-        if (((u32)pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */
+        if ((*(u32 *) pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */
                 goto usbhsf_pio_prepare_push;
 
         /* get enable DMA fifo */
@@ -723,7 +897,7 @@ static int usbhsf_dma_try_pop(struct usbhs_pkt *pkt, int *is_done)
         if (!fifo)
                 goto usbhsf_pio_prepare_pop;
 
-        if (((u32)pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */
+        if ((*(u32 *) pkt->buf + pkt->actual) & 0x7) /* 8byte alignment */
                 goto usbhsf_pio_prepare_pop;
 
         ret = usbhsf_fifo_select(pipe, fifo, 0);
@@ -884,7 +1058,7 @@ static int usbhsf_irq_empty(struct usbhs_priv *priv,
                 if (!(irq_state->bempsts & (1 << i)))
                         continue;
 
-                ret = usbhs_pkt_run(pipe);
+                ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_TRY_RUN);
                 if (ret < 0)
                         dev_err(dev, "irq_empty run_error %d : %d\n", i, ret);
         }
@@ -914,7 +1088,7 @@ static int usbhsf_irq_ready(struct usbhs_priv *priv,
                 if (!(irq_state->brdysts & (1 << i)))
                         continue;
 
-                ret = usbhs_pkt_run(pipe);
+                ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_TRY_RUN);
                 if (ret < 0)
                         dev_err(dev, "irq_ready run_error %d : %d\n", i, ret);
         }
@@ -929,7 +1103,7 @@ static void usbhsf_dma_complete(void *arg)
         struct device *dev = usbhs_priv_to_dev(priv);
         int ret;
 
-        ret = usbhs_pkt_dmadone(pipe);
+        ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_DMA_DONE);
         if (ret < 0)
                 dev_err(dev, "dma_complete run_error %d : %d\n",
                         usbhs_pipe_number(pipe), ret);
diff --git a/drivers/usb/renesas_usbhs/fifo.h b/drivers/usb/renesas_usbhs/fifo.h
index ed6d8e56c13c..32a7b246b28d 100644
--- a/drivers/usb/renesas_usbhs/fifo.h
+++ b/drivers/usb/renesas_usbhs/fifo.h
@@ -51,6 +51,8 @@ struct usbhs_pkt {
         struct list_head node;
         struct usbhs_pipe *pipe;
         struct usbhs_pkt_handle *handler;
+        void (*done)(struct usbhs_priv *priv,
+                     struct usbhs_pkt *pkt);
         dma_addr_t dma;
         void *buf;
         int length;
@@ -76,12 +78,6 @@ void usbhs_fifo_quit(struct usbhs_priv *priv);
 /*
  * packet info
  */
-enum {
-        USBHSF_PKT_PREPARE,
-        USBHSF_PKT_TRY_RUN,
-        USBHSF_PKT_DMA_DONE,
-};
-
 extern struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
 extern struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
 extern struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
@@ -89,16 +85,18 @@ extern struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
 extern struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
 extern struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;
 
+extern struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler;
+extern struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler;
+
+extern struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler;
+extern struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler;
 
 void usbhs_pkt_init(struct usbhs_pkt *pkt);
 void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
-                    struct usbhs_pkt_handle *handler,
+                    void (*done)(struct usbhs_priv *priv,
+                                 struct usbhs_pkt *pkt),
                     void *buf, int len, int zero);
 struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
-int __usbhs_pkt_handler(struct usbhs_pipe *pipe, int type);
-
-#define usbhs_pkt_start(p)      __usbhs_pkt_handler(p, USBHSF_PKT_PREPARE)
-#define usbhs_pkt_run(p)        __usbhs_pkt_handler(p, USBHSF_PKT_TRY_RUN)
-#define usbhs_pkt_dmadone(p)    __usbhs_pkt_handler(p, USBHSF_PKT_DMA_DONE)
+void usbhs_pkt_start(struct usbhs_pipe *pipe);
 
 #endif /* RENESAS_USB_FIFO_H */
diff --git a/drivers/usb/renesas_usbhs/mod.c b/drivers/usb/renesas_usbhs/mod.c
index a577f8f4064c..053f86d70009 100644
--- a/drivers/usb/renesas_usbhs/mod.c
+++ b/drivers/usb/renesas_usbhs/mod.c
@@ -58,7 +58,7 @@ void usbhs_mod_autonomy_mode(struct usbhs_priv *priv)
         struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
 
         info->irq_vbus          = usbhsm_autonomy_irq_vbus;
-        priv->pfunc->get_vbus   = usbhsm_autonomy_get_vbus;
+        priv->pfunc.get_vbus    = usbhsm_autonomy_get_vbus;
 
         usbhs_irq_callback_update(priv, NULL);
 }
@@ -93,8 +93,9 @@ struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id)
         return ret;
 }
 
-int usbhs_mod_is_host(struct usbhs_priv *priv, struct usbhs_mod *mod)
+int usbhs_mod_is_host(struct usbhs_priv *priv)
 {
+        struct usbhs_mod *mod = usbhs_mod_get_current(priv);
         struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
 
         if (!mod)
@@ -139,13 +140,17 @@ int usbhs_mod_probe(struct usbhs_priv *priv)
         /*
          * install host/gadget driver
          */
-        ret = usbhs_mod_gadget_probe(priv);
+        ret = usbhs_mod_host_probe(priv);
         if (ret < 0)
                 return ret;
 
+        ret = usbhs_mod_gadget_probe(priv);
+        if (ret < 0)
+                goto mod_init_host_err;
+
         /* irq settings */
         ret = request_irq(priv->irq, usbhs_interrupt,
-                          IRQF_DISABLED, dev_name(dev), priv);
+                          0, dev_name(dev), priv);
         if (ret) {
                 dev_err(dev, "irq request err\n");
                 goto mod_init_gadget_err;
@@ -155,12 +160,15 @@ int usbhs_mod_probe(struct usbhs_priv *priv)
 
 mod_init_gadget_err:
         usbhs_mod_gadget_remove(priv);
+mod_init_host_err:
+        usbhs_mod_host_remove(priv);
 
         return ret;
 }
 
 void usbhs_mod_remove(struct usbhs_priv *priv)
 {
+        usbhs_mod_host_remove(priv);
         usbhs_mod_gadget_remove(priv);
         free_irq(priv->irq, priv);
 }
@@ -168,20 +176,6 @@ void usbhs_mod_remove(struct usbhs_priv *priv)
 /*
  *              status functions
  */
-int usbhs_status_get_usb_speed(struct usbhs_irq_state *irq_state)
-{
-        switch (irq_state->dvstctr & RHST) {
-        case RHST_LOW_SPEED:
-                return USB_SPEED_LOW;
-        case RHST_FULL_SPEED:
-                return USB_SPEED_FULL;
-        case RHST_HIGH_SPEED:
-                return USB_SPEED_HIGH;
-        }
-
-        return USB_SPEED_UNKNOWN;
-}
-
 int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state)
 {
         int state = irq_state->intsts0 & DVSQ_MASK;
@@ -221,8 +215,6 @@ static void usbhs_status_get_each_irq(struct usbhs_priv *priv,
         state->intsts0 = usbhs_read(priv, INTSTS0);
         state->intsts1 = usbhs_read(priv, INTSTS1);
 
-        state->dvstctr = usbhs_read(priv, DVSTCTR);
-
         /* mask */
         if (mod) {
                 state->brdysts = usbhs_read(priv, BRDYSTS);
@@ -269,6 +261,8 @@ static irqreturn_t usbhs_interrupt(int irq, void *data)
          * see also
          *      usbhs_irq_setting_update
          */
+
+        /* INTSTS0 */
         if (irq_state.intsts0 & VBINT)
                 usbhs_mod_info_call(priv, irq_vbus, priv, &irq_state);
 
@@ -284,15 +278,38 @@ static irqreturn_t usbhs_interrupt(int irq, void *data)
         if (irq_state.intsts0 & BRDY)
                 usbhs_mod_call(priv, irq_ready, priv, &irq_state);
 
+        /* INTSTS1 */
+        if (irq_state.intsts1 & ATTCH)
+                usbhs_mod_call(priv, irq_attch, priv, &irq_state);
+
+        if (irq_state.intsts1 & DTCH)
+                usbhs_mod_call(priv, irq_dtch, priv, &irq_state);
+
+        if (irq_state.intsts1 & SIGN)
+                usbhs_mod_call(priv, irq_sign, priv, &irq_state);
+
+        if (irq_state.intsts1 & SACK)
+                usbhs_mod_call(priv, irq_sack, priv, &irq_state);
+
         return IRQ_HANDLED;
 }
 
 void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod)
 {
         u16 intenb0 = 0;
+        u16 intenb1 = 0;
         struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
 
+        /*
+         * BEMPENB/BRDYENB are picky.
+         * below method is required
+         *
+         *  - clear  INTSTS0
+         *  - update BEMPENB/BRDYENB
+         *  - update INTSTS0
+         */
         usbhs_write(priv, INTENB0, 0);
+        usbhs_write(priv, INTENB1, 0);
 
         usbhs_write(priv, BEMPENB, 0);
         usbhs_write(priv, BRDYENB, 0);
@@ -310,6 +327,9 @@ void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod)
                 intenb0 |= VBSE;
 
         if (mod) {
+                /*
+                 * INTSTS0
+                 */
                 if (mod->irq_ctrl_stage)
                         intenb0 |= CTRE;
 
@@ -322,7 +342,26 @@ void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod)
                         usbhs_write(priv, BRDYENB, mod->irq_brdysts);
                         intenb0 |= BRDYE;
                 }
+
+                /*
+                 * INTSTS1
+                 */
+                if (mod->irq_attch)
+                        intenb1 |= ATTCHE;
+
+                if (mod->irq_attch)
+                        intenb1 |= DTCHE;
+
+                if (mod->irq_sign)
+                        intenb1 |= SIGNE;
+
+                if (mod->irq_sack)
+                        intenb1 |= SACKE;
         }
 
-        usbhs_write(priv, INTENB0, intenb0);
+        if (intenb0)
+                usbhs_write(priv, INTENB0, intenb0);
+
+        if (intenb1)
+                usbhs_write(priv, INTENB1, intenb1);
 }
diff --git a/drivers/usb/renesas_usbhs/mod.h b/drivers/usb/renesas_usbhs/mod.h
index 5c845a28a21c..8ae3733031cd 100644
--- a/drivers/usb/renesas_usbhs/mod.h
+++ b/drivers/usb/renesas_usbhs/mod.h
@@ -30,7 +30,6 @@ struct usbhs_irq_state {
         u16 brdysts;
         u16 nrdysts;
         u16 bempsts;
-        u16 dvstctr;
 };
 
 struct usbhs_mod {
@@ -42,26 +41,48 @@ struct usbhs_mod {
         int (*start)(struct usbhs_priv *priv);
         int (*stop)(struct usbhs_priv *priv);
 
-        /* INTSTS0 :: DVST (DVSQ) */
+        /*
+         * INTSTS0
+         */
+
+        /* DVST (DVSQ) */
         int (*irq_dev_state)(struct usbhs_priv *priv,
                              struct usbhs_irq_state *irq_state);
 
-        /* INTSTS0 :: CTRT (CTSQ) */
+        /* CTRT (CTSQ) */
         int (*irq_ctrl_stage)(struct usbhs_priv *priv,
                               struct usbhs_irq_state *irq_state);
 
-        /* INTSTS0 :: BEMP */
-        /* BEMPSTS */
+        /* BEMP / BEMPSTS */
         int (*irq_empty)(struct usbhs_priv *priv,
                          struct usbhs_irq_state *irq_state);
         u16 irq_bempsts;
 
-        /* INTSTS0 :: BRDY */
-        /* BRDYSTS */
+        /* BRDY / BRDYSTS */
         int (*irq_ready)(struct usbhs_priv *priv,
                          struct usbhs_irq_state *irq_state);
         u16 irq_brdysts;
 
+        /*
+         * INTSTS1
+         */
+
+        /* ATTCHE */
+        int (*irq_attch)(struct usbhs_priv *priv,
+                         struct usbhs_irq_state *irq_state);
+
+        /* DTCHE */
+        int (*irq_dtch)(struct usbhs_priv *priv,
+                        struct usbhs_irq_state *irq_state);
+
+        /* SIGN */
+        int (*irq_sign)(struct usbhs_priv *priv,
+                        struct usbhs_irq_state *irq_state);
+
+        /* SACK */
+        int (*irq_sack)(struct usbhs_priv *priv,
+                        struct usbhs_irq_state *irq_state);
+
         struct usbhs_priv *priv;
 };
 
@@ -89,7 +110,7 @@ struct usbhs_mod_info {
 struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id);
 struct usbhs_mod *usbhs_mod_get_current(struct usbhs_priv *priv);
 void usbhs_mod_register(struct usbhs_priv *priv, struct usbhs_mod *usb, int id);
-int usbhs_mod_is_host(struct usbhs_priv *priv, struct usbhs_mod *mod);
+int usbhs_mod_is_host(struct usbhs_priv *priv);
 int usbhs_mod_change(struct usbhs_priv *priv, int id);
 int usbhs_mod_probe(struct usbhs_priv *priv);
 void usbhs_mod_remove(struct usbhs_priv *priv);
@@ -99,7 +120,6 @@ void usbhs_mod_autonomy_mode(struct usbhs_priv *priv);
 /*
  *              status functions
  */
-int usbhs_status_get_usb_speed(struct usbhs_irq_state *irq_state);
 int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state);
 int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state);
 
@@ -119,9 +139,24 @@ void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod);
         })
 
 /*
- * gadget control
+ * host / gadget control
  */
-#ifdef CONFIG_USB_RENESAS_USBHS_UDC
+#if     defined(CONFIG_USB_RENESAS_USBHS_HCD) || \
+        defined(CONFIG_USB_RENESAS_USBHS_HCD_MODULE)
+extern int __devinit usbhs_mod_host_probe(struct usbhs_priv *priv);
+extern int __devexit usbhs_mod_host_remove(struct usbhs_priv *priv);
+#else
+static inline int usbhs_mod_host_probe(struct usbhs_priv *priv)
+{
+        return 0;
+}
+static inline void usbhs_mod_host_remove(struct usbhs_priv *priv)
+{
+}
+#endif
+
+#if     defined(CONFIG_USB_RENESAS_USBHS_UDC) || \
+        defined(CONFIG_USB_RENESAS_USBHS_UDC_MODULE)
 extern int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv);
 extern void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv);
 #else
diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index cb2d451d511e..4cc7ee0babc6 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -39,7 +39,6 @@ struct usbhsg_uep {
         char ep_name[EP_NAME_SIZE];
 
         struct usbhsg_gpriv *gpriv;
-        struct usbhs_pkt_handle *handler;
 };
 
 struct usbhsg_gpriv {
@@ -128,25 +127,6 @@ LIST_HEAD(the_controller_link);
 /*
  *              queue push/pop
  */
-static void usbhsg_queue_push(struct usbhsg_uep *uep,
-                              struct usbhsg_request *ureq)
-{
-        struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
-        struct device *dev = usbhsg_gpriv_to_dev(gpriv);
-        struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-        struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
-        struct usb_request *req = &ureq->req;
-
-        req->actual = 0;
-        req->status = -EINPROGRESS;
-        usbhs_pkt_push(pipe, pkt, uep->handler,
-                       req->buf, req->length, req->zero);
-
-        dev_dbg(dev, "pipe %d : queue push (%d)\n",
-                usbhs_pipe_number(pipe),
-                req->length);
-}
-
 static void usbhsg_queue_pop(struct usbhsg_uep *uep,
                              struct usbhsg_request *ureq,
                              int status)
@@ -161,7 +141,7 @@ static void usbhsg_queue_pop(struct usbhsg_uep *uep,
         ureq->req.complete(&uep->ep, &ureq->req);
 }
 
-static void usbhsg_queue_done(struct usbhs_pkt *pkt)
+static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
 {
         struct usbhs_pipe *pipe = pkt->pipe;
         struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
@@ -172,6 +152,26 @@ static void usbhsg_queue_done(struct usbhs_pkt *pkt)
         usbhsg_queue_pop(uep, ureq, 0);
 }
 
+static void usbhsg_queue_push(struct usbhsg_uep *uep,
+                              struct usbhsg_request *ureq)
+{
+        struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+        struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+        struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+        struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
+        struct usb_request *req = &ureq->req;
+
+        req->actual = 0;
+        req->status = -EINPROGRESS;
+        usbhs_pkt_push(pipe, pkt, usbhsg_queue_done,
+                       req->buf, req->length, req->zero);
+        usbhs_pkt_start(pipe);
+
+        dev_dbg(dev, "pipe %d : queue push (%d)\n",
+                usbhs_pipe_number(pipe),
+                req->length);
+}
+
 /*
  *              dma map/unmap
  */
@@ -265,7 +265,7 @@ static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
 
         if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) {
                 usbhs_pipe_disable(pipe);
-                usbhs_pipe_clear_sequence(pipe);
+                usbhs_pipe_sequence_data0(pipe);
                 usbhs_pipe_enable(pipe);
         }
 
@@ -355,7 +355,7 @@ static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
         struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
         struct device *dev = usbhsg_gpriv_to_dev(gpriv);
 
-        gpriv->gadget.speed = usbhs_status_get_usb_speed(irq_state);
+        gpriv->gadget.speed = usbhs_bus_get_speed(priv);
 
         dev_dbg(dev, "state = %x : speed : %d\n",
                 usbhs_status_get_device_state(irq_state),
@@ -389,13 +389,13 @@ static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
 
         switch (stage) {
         case READ_DATA_STAGE:
-                dcp->handler = &usbhs_fifo_pio_push_handler;
+                pipe->handler = &usbhs_fifo_pio_push_handler;
                 break;
         case WRITE_DATA_STAGE:
-                dcp->handler = &usbhs_fifo_pio_pop_handler;
+                pipe->handler = &usbhs_fifo_pio_pop_handler;
                 break;
         case NODATA_STATUS_STAGE:
-                dcp->handler = &usbhs_ctrl_stage_end_handler;
+                pipe->handler = &usbhs_ctrl_stage_end_handler;
                 break;
         default:
                 return ret;
@@ -479,24 +479,31 @@ static int usbhsg_ep_enable(struct usb_ep *ep,
          */
         if (uep->pipe) {
                 usbhs_pipe_clear(uep->pipe);
-                usbhs_pipe_clear_sequence(uep->pipe);
+                usbhs_pipe_sequence_data0(uep->pipe);
                 return 0;
         }
 
-        pipe = usbhs_pipe_malloc(priv, desc);
+        pipe = usbhs_pipe_malloc(priv,
+                                 usb_endpoint_type(desc),
+                                 usb_endpoint_dir_in(desc));
         if (pipe) {
                 uep->pipe               = pipe;
                 pipe->mod_private       = uep;
 
+                /* set epnum / maxp */
+                usbhs_pipe_config_update(pipe, 0,
+                                         usb_endpoint_num(desc),
+                                         usb_endpoint_maxp(desc));
+
                 /*
                  * usbhs_fifo_dma_push/pop_handler try to
                  * use dmaengine if possible.
                  * It will use pio handler if impossible.
                  */
                 if (usb_endpoint_dir_in(desc))
-                        uep->handler = &usbhs_fifo_dma_push_handler;
+                        pipe->handler = &usbhs_fifo_dma_push_handler;
                 else
-                        uep->handler = &usbhs_fifo_dma_pop_handler;
+                        pipe->handler = &usbhs_fifo_dma_pop_handler;
 
                 ret = 0;
         }
@@ -659,7 +666,6 @@ static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
          * pipe initialize and enable DCP
          */
         usbhs_pipe_init(priv,
-                        usbhsg_queue_done,
                         usbhsg_dma_map_ctrl);
         usbhs_fifo_init(priv);
         usbhsg_uep_init(gpriv);
@@ -667,6 +673,7 @@ static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
         /* dcp init */
         dcp->pipe               = usbhs_dcp_malloc(priv);
         dcp->pipe->mod_private  = dcp;
+        usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
 
         /*
          * system config enble
@@ -730,10 +737,6 @@ static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
 
         usbhsg_pipe_disable(dcp);
 
-        if (gpriv->driver &&
-            gpriv->driver->disconnect)
-                gpriv->driver->disconnect(&gpriv->gadget);
-
         dev_dbg(dev, "stop gadget\n");
 
         return 0;
@@ -744,31 +747,19 @@ static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
  *              linux usb function
  *
  */
-static int usbhsg_gadget_start(struct usb_gadget_driver *driver,
-                            int (*bind)(struct usb_gadget *))
+static int usbhsg_gadget_start(struct usb_gadget *gadget,
+                struct usb_gadget_driver *driver)
 {
-        struct usbhsg_gpriv *gpriv;
+        struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
         struct usbhs_priv *priv;
         struct device *dev;
         int ret;
 
-        if (!bind               ||
-            !driver             ||
+        if (!driver             ||
             !driver->setup      ||
             driver->speed != USB_SPEED_HIGH)
                 return -EINVAL;
 
-        /*
-         * find unused controller
-         */
-        usbhsg_for_each_controller(gpriv) {
-                if (!gpriv->driver)
-                        goto find_unused_controller;
-        }
-        return -ENODEV;
-
-find_unused_controller:
-
         dev  = usbhsg_gpriv_to_dev(gpriv);
         priv = usbhsg_gpriv_to_priv(gpriv);
 
@@ -782,19 +773,8 @@ find_unused_controller:
                 goto add_fail;
         }
 
-        ret = bind(&gpriv->gadget);
-        if (ret) {
-                dev_err(dev, "bind to driver %s error %d\n",
-                        driver->driver.name, ret);
-                goto bind_fail;
-        }
-
-        dev_dbg(dev, "bind %s\n", driver->driver.name);
-
         return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
 
-bind_fail:
-        device_del(&gpriv->gadget.dev);
 add_fail:
         gpriv->driver = NULL;
         gpriv->gadget.dev.driver = NULL;
@@ -802,9 +782,10 @@ add_fail:
         return ret;
 }
 
-static int usbhsg_gadget_stop(struct usb_gadget_driver *driver)
+static int usbhsg_gadget_stop(struct usb_gadget *gadget,
+                struct usb_gadget_driver *driver)
 {
-        struct usbhsg_gpriv *gpriv;
+        struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
         struct usbhs_priv *priv;
         struct device *dev;
 
@@ -812,17 +793,6 @@ static int usbhsg_gadget_stop(struct usb_gadget_driver *driver)
             !driver->unbind)
                 return -EINVAL;
 
-        /*
-         * find controller
-         */
-        usbhsg_for_each_controller(gpriv) {
-                if (gpriv->driver == driver)
-                        goto find_matching_controller;
-        }
-        return -ENODEV;
-
-find_matching_controller:
-
         dev  = usbhsg_gpriv_to_dev(gpriv);
         priv = usbhsg_gpriv_to_priv(gpriv);
 
@@ -830,12 +800,6 @@ find_matching_controller:
         device_del(&gpriv->gadget.dev);
         gpriv->driver = NULL;
 
-        if (driver->disconnect)
-                driver->disconnect(&gpriv->gadget);
-
-        driver->unbind(&gpriv->gadget);
-        dev_dbg(dev, "unbind %s\n", driver->driver.name);
-
         return 0;
 }
 
@@ -852,8 +816,8 @@ static int usbhsg_get_frame(struct usb_gadget *gadget)
 
 static struct usb_gadget_ops usbhsg_gadget_ops = {
         .get_frame              = usbhsg_get_frame,
-        .start                  = usbhsg_gadget_start,
-        .stop                   = usbhsg_gadget_stop,
+        .udc_start              = usbhsg_gadget_start,
+        .udc_stop               = usbhsg_gadget_stop,
 };
 
 static int usbhsg_start(struct usbhs_priv *priv)
diff --git a/drivers/usb/renesas_usbhs/mod_host.c b/drivers/usb/renesas_usbhs/mod_host.c
new file mode 100644
index 000000000000..1a7208a50afc
--- /dev/null
+++ b/drivers/usb/renesas_usbhs/mod_host.c
@@ -0,0 +1,1312 @@
+/*
+ * Renesas USB driver
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include "common.h"
+
+/*
+ *** HARDWARE LIMITATION ***
+ *
+ * 1) renesas_usbhs has a limited number of controllable devices.
+ *    it can control only 9 devices in generally.
+ *      see DEVADDn / DCPMAXP / PIPEMAXP.
+ *
+ * 2) renesas_usbhs pipe number is limited.
+ *    the pipe will be re-used for each devices.
+ *    so, software should control DATA0/1 sequence of each devices.
+ */
+
+
+/*
+ *              image of mod_host
+ *
+ * +--------+
+ * | udev 0 | --> it is used when set address
+ * +--------+
+ *
+ * +--------+                                   pipes are reused for each uep.
+ * | udev 1 |-+- [uep 0 (dcp) ] --+             pipe will be switched when
+ * +--------+ |                   |             target device was changed
+ *            +- [uep 1 (bulk)] --|---+            +--------------+
+ *            |                   +--------------> | pipe0 (dcp)  |
+ *            +- [uep 2 (bulk)] --|---|---+        +--------------+
+ *                                |   |   |        | pipe1 (isoc) |
+ * +--------+                     |   |   |        +--------------+
+ * | udev 2 |-+- [uep 0 (dcp) ] --+   +-- |------> | pipe2 (bulk) |
+ * +--------+ |                   |   |   |        +--------------+
+ *            +- [uep 1 (int) ] --|-+ |   +------> | pipe3 (bulk) |
+ *                                | | |   |        +--------------+
+ * +--------+                     | +-|---|------> | pipe4 (int)  |
+ * | udev 3 |-+- [uep 0 (dcp) ] --+   |   |        +--------------+
+ * +--------+ |                       |   |        | ....         |
+ *            +- [uep 1 (bulk)] ------+   |        | ....         |
+ *            |                           |
+ *            +- [uep 2 (bulk)]-----------+
+ */
+
+
+/*
+ *              struct
+ */
+struct usbhsh_pipe_info {
+        unsigned int            usr_cnt; /* see usbhsh_endpoint_alloc() */
+};
+
+struct usbhsh_request {
+        struct urb              *urb;
+        struct usbhs_pkt        pkt;
+        struct list_head        ureq_link; /* see hpriv :: ureq_link_xxx */
+};
+
+struct usbhsh_device {
+        struct usb_device       *usbv;
+        struct list_head        ep_list_head; /* list of usbhsh_ep */
+};
+
+struct usbhsh_ep {
+        struct usbhs_pipe       *pipe;
+        struct usbhsh_device    *udev;   /* attached udev */
+        struct list_head        ep_list; /* list to usbhsh_device */
+
+        int maxp;
+};
+
+#define USBHSH_DEVICE_MAX       10 /* see DEVADDn / DCPMAXP / PIPEMAXP */
+#define USBHSH_PORT_MAX          7 /* see DEVADDn :: HUBPORT */
+struct usbhsh_hpriv {
+        struct usbhs_mod        mod;
+        struct usbhs_pipe       *dcp;
+
+        struct usbhsh_device    udev[USBHSH_DEVICE_MAX];
+
+        struct usbhsh_pipe_info *pipe_info;
+        int                      pipe_size;
+
+        u32     port_stat;      /* USB_PORT_STAT_xxx */
+
+        struct completion       *done;
+
+        /* see usbhsh_req_alloc/free */
+        struct list_head        ureq_link_active;
+        struct list_head        ureq_link_free;
+};
+
+
+static const char usbhsh_hcd_name[] = "renesas_usbhs host";
+
+/*
+ *              macro
+ */
+#define usbhsh_priv_to_hpriv(priv) \
+        container_of(usbhs_mod_get(priv, USBHS_HOST), struct usbhsh_hpriv, mod)
+
+#define __usbhsh_for_each_hpipe(start, pos, h, i)       \
+        for (i = start, pos = (h)->hpipe + i;           \
+             i < (h)->hpipe_size;                       \
+             i++, pos = (h)->hpipe + i)
+
+#define usbhsh_for_each_hpipe(pos, hpriv, i)    \
+        __usbhsh_for_each_hpipe(1, pos, hpriv, i)
+
+#define usbhsh_for_each_hpipe_with_dcp(pos, hpriv, i)   \
+        __usbhsh_for_each_hpipe(0, pos, hpriv, i)
+
+#define __usbhsh_for_each_udev(start, pos, h, i)        \
+        for (i = start, pos = (h)->udev + i;            \
+             i < USBHSH_DEVICE_MAX;                     \
+             i++, pos = (h)->udev + i)
+
+#define usbhsh_for_each_udev(pos, hpriv, i)     \
+        __usbhsh_for_each_udev(1, pos, hpriv, i)
+
+#define usbhsh_for_each_udev_with_dev0(pos, hpriv, i)   \
+        __usbhsh_for_each_udev(0, pos, hpriv, i)
+
+#define usbhsh_hcd_to_hpriv(h)  (struct usbhsh_hpriv *)((h)->hcd_priv)
+#define usbhsh_hcd_to_dev(h)    ((h)->self.controller)
+
+#define usbhsh_hpriv_to_priv(h) ((h)->mod.priv)
+#define usbhsh_hpriv_to_dcp(h)  ((h)->dcp)
+#define usbhsh_hpriv_to_hcd(h)  \
+        container_of((void *)h, struct usb_hcd, hcd_priv)
+
+#define usbhsh_ep_to_uep(u)     ((u)->hcpriv)
+#define usbhsh_uep_to_pipe(u)   ((u)->pipe)
+#define usbhsh_uep_to_udev(u)   ((u)->udev)
+#define usbhsh_urb_to_ureq(u)   ((u)->hcpriv)
+#define usbhsh_urb_to_usbv(u)   ((u)->dev)
+
+#define usbhsh_usbv_to_udev(d)  dev_get_drvdata(&(d)->dev)
+
+#define usbhsh_udev_to_usbv(h)  ((h)->usbv)
+
+#define usbhsh_pipe_info(p)     ((p)->mod_private)
+
+#define usbhsh_device_number(h, d)      ((int)((d) - (h)->udev))
+#define usbhsh_device_nth(h, d)         ((h)->udev + d)
+#define usbhsh_device0(h)               usbhsh_device_nth(h, 0)
+
+#define usbhsh_port_stat_init(h)        ((h)->port_stat = 0)
+#define usbhsh_port_stat_set(h, s)      ((h)->port_stat |= (s))
+#define usbhsh_port_stat_clear(h, s)    ((h)->port_stat &= ~(s))
+#define usbhsh_port_stat_get(h)         ((h)->port_stat)
+
+#define usbhsh_pkt_to_req(p)    \
+        container_of((void *)p, struct usbhsh_request, pkt)
+
+/*
+ *              req alloc/free
+ */
+static void usbhsh_req_list_init(struct usbhsh_hpriv *hpriv)
+{
+        INIT_LIST_HEAD(&hpriv->ureq_link_active);
+        INIT_LIST_HEAD(&hpriv->ureq_link_free);
+}
+
+static void usbhsh_req_list_quit(struct usbhsh_hpriv *hpriv)
+{
+        struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
+        struct device *dev = usbhsh_hcd_to_dev(hcd);
+        struct usbhsh_request *ureq, *next;
+
+        /* kfree all active ureq */
+        list_for_each_entry_safe(ureq, next,
+                                 &hpriv->ureq_link_active,
+                                 ureq_link) {
+                dev_err(dev, "active ureq (%p) is force freed\n", ureq);
+                kfree(ureq);
+        }
+
+        /* kfree all free ureq */
+        list_for_each_entry_safe(ureq, next, &hpriv->ureq_link_free, ureq_link)
+                kfree(ureq);
+}
+
+static struct usbhsh_request *usbhsh_req_alloc(struct usbhsh_hpriv *hpriv,
+                                               struct urb *urb,
+                                               gfp_t mem_flags)
+{
+        struct usbhsh_request *ureq;
+        struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+
+        if (list_empty(&hpriv->ureq_link_free)) {
+                /*
+                 * create new one if there is no free ureq
+                 */
+                ureq = kzalloc(sizeof(struct usbhsh_request), mem_flags);
+                if (ureq)
+                        INIT_LIST_HEAD(&ureq->ureq_link);
+        } else {
+                /*
+                 * reuse "free" ureq if exist
+                 */
+                ureq = list_entry(hpriv->ureq_link_free.next,
+                                  struct usbhsh_request,
+                                  ureq_link);
+                if (ureq)
+                        list_del_init(&ureq->ureq_link);
+        }
+
+        if (!ureq) {
+                dev_err(dev, "ureq alloc fail\n");
+                return NULL;
+        }
+
+        usbhs_pkt_init(&ureq->pkt);
+
+        /*
+         * push it to "active" list
+         */
+        list_add_tail(&ureq->ureq_link, &hpriv->ureq_link_active);
+        ureq->urb = urb;
+
+        return ureq;
+}
+
+static void usbhsh_req_free(struct usbhsh_hpriv *hpriv,
+                            struct usbhsh_request *ureq)
+{
+        struct usbhs_pkt *pkt = &ureq->pkt;
+
+        usbhs_pkt_init(pkt);
+
+        /*
+         * removed from "active" list,
+         * and push it to "free" list
+         */
+        ureq->urb = NULL;
+        list_del_init(&ureq->ureq_link);
+        list_add_tail(&ureq->ureq_link, &hpriv->ureq_link_free);
+}
+
+/*
+ *              device control
+ */
+
+static int usbhsh_device_has_endpoint(struct usbhsh_device *udev)
+{
+        return !list_empty(&udev->ep_list_head);
+}
+
+static struct usbhsh_device *usbhsh_device_alloc(struct usbhsh_hpriv *hpriv,
+                                                 struct urb *urb)
+{
+        struct usbhsh_device *udev = NULL;
+        struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
+        struct device *dev = usbhsh_hcd_to_dev(hcd);
+        struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
+        struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+        int i;
+
+        /*
+         * device 0
+         */
+        if (0 == usb_pipedevice(urb->pipe)) {
+                udev = usbhsh_device0(hpriv);
+                goto usbhsh_device_find;
+        }
+
+        /*
+         * find unused device
+         */
+        usbhsh_for_each_udev(udev, hpriv, i) {
+                if (usbhsh_udev_to_usbv(udev))
+                        continue;
+                goto usbhsh_device_find;
+        }
+
+        dev_err(dev, "no free usbhsh_device\n");
+
+        return NULL;
+
+usbhsh_device_find:
+        if (usbhsh_device_has_endpoint(udev))
+                dev_warn(dev, "udev have old endpoint\n");
+
+        /* uep will be attached */
+        INIT_LIST_HEAD(&udev->ep_list_head);
+
+        /*
+         * usbhsh_usbv_to_udev()
+         * usbhsh_udev_to_usbv()
+         * will be enable
+         */
+        dev_set_drvdata(&usbv->dev, udev);
+        udev->usbv = usbv;
+
+        /* set device config */
+        usbhs_set_device_speed(priv,
+                               usbhsh_device_number(hpriv, udev),
+                               usbhsh_device_number(hpriv, udev),
+                               0, /* FIXME no parent */
+                               usbv->speed);
+
+        dev_dbg(dev, "%s [%d](%p)\n", __func__,
+                usbhsh_device_number(hpriv, udev), udev);
+
+        return udev;
+}
+
+static void usbhsh_device_free(struct usbhsh_hpriv *hpriv,
+                               struct usbhsh_device *udev)
+{
+        struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
+        struct device *dev = usbhsh_hcd_to_dev(hcd);
+        struct usb_device *usbv = usbhsh_udev_to_usbv(udev);
+
+        dev_dbg(dev, "%s [%d](%p)\n", __func__,
+                usbhsh_device_number(hpriv, udev), udev);
+
+        if (usbhsh_device_has_endpoint(udev))
+                dev_warn(dev, "udev still have endpoint\n");
+
+        /*
+         * usbhsh_usbv_to_udev()
+         * usbhsh_udev_to_usbv()
+         * will be disable
+         */
+        dev_set_drvdata(&usbv->dev, NULL);
+        udev->usbv = NULL;
+}
+
+/*
+ *              end-point control
+ */
+struct usbhsh_ep *usbhsh_endpoint_alloc(struct usbhsh_hpriv *hpriv,
+                                        struct usbhsh_device *udev,
+                                        struct usb_host_endpoint *ep,
+                                        gfp_t mem_flags)
+{
+        struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+        struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
+        struct usbhsh_ep *uep;
+        struct usbhsh_pipe_info *info;
+        struct usbhs_pipe *pipe, *best_pipe;
+        struct device *dev = usbhsh_hcd_to_dev(hcd);
+        struct usb_endpoint_descriptor *desc = &ep->desc;
+        int type, i;
+        unsigned int min_usr;
+
+        uep = kzalloc(sizeof(struct usbhsh_ep), mem_flags);
+        if (!uep) {
+                dev_err(dev, "usbhsh_ep alloc fail\n");
+                return NULL;
+        }
+        type = usb_endpoint_type(desc);
+
+        /*
+         * find best pipe for endpoint
+         * see
+         *      HARDWARE LIMITATION
+         */
+        min_usr = ~0;
+        best_pipe = NULL;
+        usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
+                if (!usbhs_pipe_type_is(pipe, type))
+                        continue;
+
+                info = usbhsh_pipe_info(pipe);
+
+                if (min_usr > info->usr_cnt) {
+                        min_usr         = info->usr_cnt;
+                        best_pipe       = pipe;
+                }
+        }
+
+        if (unlikely(!best_pipe)) {
+                dev_err(dev, "couldn't find best pipe\n");
+                kfree(uep);
+                return NULL;
+        }
+
+        /*
+         * init uep
+         */
+        uep->pipe       = best_pipe;
+        uep->maxp       = usb_endpoint_maxp(desc);
+        usbhsh_uep_to_udev(uep) = udev;
+        usbhsh_ep_to_uep(ep)    = uep;
+
+        /*
+         * update pipe user count
+         */
+        info = usbhsh_pipe_info(best_pipe);
+        info->usr_cnt++;
+
+        /* init this endpoint, and attach it to udev */
+        INIT_LIST_HEAD(&uep->ep_list);
+        list_add_tail(&uep->ep_list, &udev->ep_list_head);
+
+        /*
+         * usbhs_pipe_config_update() should be called after
+         * usbhs_device_config()
+         * see
+         *  DCPMAXP/PIPEMAXP
+         */
+        usbhs_pipe_config_update(uep->pipe,
+                                 usbhsh_device_number(hpriv, udev),
+                                 usb_endpoint_num(desc),
+                                 uep->maxp);
+
+        dev_dbg(dev, "%s [%d-%s](%p)\n", __func__,
+                usbhsh_device_number(hpriv, udev),
+                usbhs_pipe_name(pipe), uep);
+
+        return uep;
+}
+
+void usbhsh_endpoint_free(struct usbhsh_hpriv *hpriv,
+                          struct usb_host_endpoint *ep)
+{
+        struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+        struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep);
+        struct usbhsh_pipe_info *info;
+
+        if (!uep)
+                return;
+
+        dev_dbg(dev, "%s [%d-%s](%p)\n", __func__,
+                usbhsh_device_number(hpriv, usbhsh_uep_to_udev(uep)),
+                usbhs_pipe_name(uep->pipe), uep);
+
+        info = usbhsh_pipe_info(uep->pipe);
+        info->usr_cnt--;
+
+        /* remove this endpoint from udev */
+        list_del_init(&uep->ep_list);
+
+        usbhsh_uep_to_udev(uep) = NULL;
+        usbhsh_ep_to_uep(ep) = NULL;
+
+        kfree(uep);
+}
+
+/*
+ *              queue push/pop
+ */
+static void usbhsh_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
+{
+        struct usbhsh_request *ureq = usbhsh_pkt_to_req(pkt);
+        struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+        struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
+        struct urb *urb = ureq->urb;
+        struct device *dev = usbhs_priv_to_dev(priv);
+
+        dev_dbg(dev, "%s\n", __func__);
+
+        if (!urb) {
+                dev_warn(dev, "pkt doesn't have urb\n");
+                return;
+        }
+
+        urb->actual_length = pkt->actual;
+        usbhsh_req_free(hpriv, ureq);
+        usbhsh_urb_to_ureq(urb) = NULL;
+
+        usb_hcd_unlink_urb_from_ep(hcd, urb);
+        usb_hcd_giveback_urb(hcd, urb, 0);
+}
+
+static int usbhsh_queue_push(struct usb_hcd *hcd,
+                             struct usbhs_pipe *pipe,
+                             struct urb *urb)
+{
+        struct usbhsh_request *ureq = usbhsh_urb_to_ureq(urb);
+        struct usbhs_pkt *pkt = &ureq->pkt;
+        struct device *dev = usbhsh_hcd_to_dev(hcd);
+        void *buf;
+        int len;
+
+        if (usb_pipeisoc(urb->pipe)) {
+                dev_err(dev, "pipe iso is not supported now\n");
+                return -EIO;
+        }
+
+        if (usb_pipein(urb->pipe))
+                pipe->handler = &usbhs_fifo_pio_pop_handler;
+        else
+                pipe->handler = &usbhs_fifo_pio_push_handler;
+
+        buf = (void *)(urb->transfer_buffer + urb->actual_length);
+        len = urb->transfer_buffer_length - urb->actual_length;
+
+        dev_dbg(dev, "%s\n", __func__);
+        usbhs_pkt_push(pipe, pkt, usbhsh_queue_done,
+                       buf, len, (urb->transfer_flags & URB_ZERO_PACKET));
+        usbhs_pkt_start(pipe);
+
+        return 0;
+}
+
+/*
+ *              DCP setup stage
+ */
+static int usbhsh_is_request_address(struct urb *urb)
+{
+        struct usb_ctrlrequest *cmd;
+
+        cmd = (struct usb_ctrlrequest *)urb->setup_packet;
+
+        if ((DeviceOutRequest    == cmd->bRequestType << 8) &&
+            (USB_REQ_SET_ADDRESS == cmd->bRequest))
+                return 1;
+        else
+                return 0;
+}
+
+static void usbhsh_setup_stage_packet_push(struct usbhsh_hpriv *hpriv,
+                                           struct urb *urb,
+                                           struct usbhs_pipe *pipe)
+{
+        struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+        struct usb_ctrlrequest req;
+        struct device *dev = usbhs_priv_to_dev(priv);
+
+        /*
+         * wait setup packet ACK
+         * see
+         *      usbhsh_irq_setup_ack()
+         *      usbhsh_irq_setup_err()
+         */
+        DECLARE_COMPLETION(done);
+        hpriv->done = &done;
+
+        /* copy original request */
+        memcpy(&req, urb->setup_packet, sizeof(struct usb_ctrlrequest));
+
+        /*
+         * renesas_usbhs can not use original usb address.
+         * see HARDWARE LIMITATION.
+         * modify usb address here.
+         */
+        if (usbhsh_is_request_address(urb)) {
+                /* FIXME */
+                req.wValue = 1;
+                dev_dbg(dev, "create new address - %d\n", req.wValue);
+        }
+
+        /* set request */
+        usbhs_usbreq_set_val(priv, &req);
+
+        /*
+         * wait setup packet ACK
+         */
+        wait_for_completion(&done);
+        hpriv->done = NULL;
+
+        dev_dbg(dev, "%s done\n", __func__);
+}
+
+/*
+ *              DCP data stage
+ */
+static void usbhsh_data_stage_packet_done(struct usbhs_priv *priv,
+                                          struct usbhs_pkt *pkt)
+{
+        struct usbhsh_request *ureq = usbhsh_pkt_to_req(pkt);
+        struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+        struct urb *urb = ureq->urb;
+
+        /* this ureq was connected to urb when usbhsh_urb_enqueue()  */
+
+        usbhsh_req_free(hpriv, ureq);
+        usbhsh_urb_to_ureq(urb) = NULL;
+}
+
+static void usbhsh_data_stage_packet_push(struct usbhsh_hpriv *hpriv,
+                                          struct urb *urb,
+                                          struct usbhs_pipe *pipe)
+{
+        struct usbhsh_request *ureq;
+        struct usbhs_pkt *pkt;
+
+        /*
+         * FIXME
+         *
+         * data stage uses ureq which is connected to urb
+         * see usbhsh_urb_enqueue() :: alloc new request.
+         * it will be freed in usbhsh_data_stage_packet_done()
+         */
+        ureq    = usbhsh_urb_to_ureq(urb);
+        pkt     = &ureq->pkt;
+
+        if (usb_pipein(urb->pipe))
+                pipe->handler = &usbhs_dcp_data_stage_in_handler;
+        else
+                pipe->handler = &usbhs_dcp_data_stage_out_handler;
+
+        usbhs_pkt_push(pipe, pkt,
+                       usbhsh_data_stage_packet_done,
+                       urb->transfer_buffer,
+                       urb->transfer_buffer_length,
+                       (urb->transfer_flags & URB_ZERO_PACKET));
+}
+
+/*
+ *              DCP status stage
+ */
+static void usbhsh_status_stage_packet_push(struct usbhsh_hpriv *hpriv,
+                                            struct urb *urb,
+                                            struct usbhs_pipe *pipe)
+{
+        struct usbhsh_request *ureq;
+        struct usbhs_pkt *pkt;
+
+        /*
+         * FIXME
+         *
+         * status stage uses allocated ureq.
+         * it will be freed on usbhsh_queue_done()
+         */
+        ureq    = usbhsh_req_alloc(hpriv, urb, GFP_KERNEL);
+        pkt     = &ureq->pkt;
+
+        if (usb_pipein(urb->pipe))
+                pipe->handler = &usbhs_dcp_status_stage_in_handler;
+        else
+                pipe->handler = &usbhs_dcp_status_stage_out_handler;
+
+        usbhs_pkt_push(pipe, pkt,
+                       usbhsh_queue_done,
+                       NULL,
+                       urb->transfer_buffer_length,
+                       0);
+}
+
+static int usbhsh_dcp_queue_push(struct usb_hcd *hcd,
+                                 struct usbhsh_hpriv *hpriv,
+                                 struct usbhs_pipe *pipe,
+                                 struct urb *urb)
+{
+        struct device *dev = usbhsh_hcd_to_dev(hcd);
+
+        dev_dbg(dev, "%s\n", __func__);
+
+        /*
+         * setup stage
+         *
+         * usbhsh_send_setup_stage_packet() wait SACK/SIGN
+         */
+        usbhsh_setup_stage_packet_push(hpriv, urb, pipe);
+
+        /*
+         * data stage
+         *
+         * It is pushed only when urb has buffer.
+         */
+        if (urb->transfer_buffer_length)
+                usbhsh_data_stage_packet_push(hpriv, urb, pipe);
+
+        /*
+         * status stage
+         */
+        usbhsh_status_stage_packet_push(hpriv, urb, pipe);
+
+        /*
+         * start pushed packets
+         */
+        usbhs_pkt_start(pipe);
+
+        return 0;
+}
+
+/*
+ *              dma map functions
+ */
+static int usbhsh_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
+{
+        return 0;
+}
+
+/*
+ *              for hc_driver
+ */
+static int usbhsh_host_start(struct usb_hcd *hcd)
+{
+        return 0;
+}
+
+static void usbhsh_host_stop(struct usb_hcd *hcd)
+{
+}
+
+static int usbhsh_urb_enqueue(struct usb_hcd *hcd,
+                              struct urb *urb,
+                              gfp_t mem_flags)
+{
+        struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
+        struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+        struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
+        struct usb_host_endpoint *ep = urb->ep;
+        struct usbhsh_request *ureq;
+        struct usbhsh_device *udev, *new_udev = NULL;
+        struct usbhs_pipe *pipe;
+        struct usbhsh_ep *uep;
+
+        int ret;
+
+        dev_dbg(dev, "%s (%s)\n",
+                __func__, usb_pipein(urb->pipe) ? "in" : "out");
+
+        ret = usb_hcd_link_urb_to_ep(hcd, urb);
+        if (ret)
+                goto usbhsh_urb_enqueue_error_not_linked;
+
+        /*
+         * get udev
+         */
+        udev = usbhsh_usbv_to_udev(usbv);
+        if (!udev) {
+                new_udev = usbhsh_device_alloc(hpriv, urb);
+                if (!new_udev)
+                        goto usbhsh_urb_enqueue_error_not_linked;
+
+                udev = new_udev;
+        }
+
+        /*
+         * get uep
+         */
+        uep = usbhsh_ep_to_uep(ep);
+        if (!uep) {
+                uep = usbhsh_endpoint_alloc(hpriv, udev, ep, mem_flags);
+                if (!uep)
+                        goto usbhsh_urb_enqueue_error_free_device;
+        }
+        pipe = usbhsh_uep_to_pipe(uep);
+
+        /*
+         * alloc new request
+         */
+        ureq = usbhsh_req_alloc(hpriv, urb, mem_flags);
+        if (unlikely(!ureq)) {
+                ret = -ENOMEM;
+                goto usbhsh_urb_enqueue_error_free_endpoint;
+        }
+        usbhsh_urb_to_ureq(urb) = ureq;
+
+        /*
+         * push packet
+         */
+        if (usb_pipecontrol(urb->pipe))
+                usbhsh_dcp_queue_push(hcd, hpriv, pipe, urb);
+        else
+                usbhsh_queue_push(hcd, pipe, urb);
+
+        return 0;
+
+usbhsh_urb_enqueue_error_free_endpoint:
+        usbhsh_endpoint_free(hpriv, ep);
+usbhsh_urb_enqueue_error_free_device:
+        if (new_udev)
+                usbhsh_device_free(hpriv, new_udev);
+usbhsh_urb_enqueue_error_not_linked:
+
+        dev_dbg(dev, "%s error\n", __func__);
+
+        return ret;
+}
+
+static int usbhsh_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+{
+        struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
+        struct usbhsh_request *ureq = usbhsh_urb_to_ureq(urb);
+
+        if (ureq) {
+                usbhsh_req_free(hpriv, ureq);
+                usbhsh_urb_to_ureq(urb) = NULL;
+        }
+
+        return 0;
+}
+
+static void usbhsh_endpoint_disable(struct usb_hcd *hcd,
+                                    struct usb_host_endpoint *ep)
+{
+        struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep);
+        struct usbhsh_device *udev;
+        struct usbhsh_hpriv *hpriv;
+
+        /*
+         * this function might be called manytimes by same hcd/ep
+         * in-endpoitn == out-endpoint if ep == dcp.
+         */
+        if (!uep)
+                return;
+
+        udev    = usbhsh_uep_to_udev(uep);
+        hpriv   = usbhsh_hcd_to_hpriv(hcd);
+
+        usbhsh_endpoint_free(hpriv, ep);
+        ep->hcpriv = NULL;
+
+        /*
+         * if there is no endpoint,
+         * free device
+         */
+        if (!usbhsh_device_has_endpoint(udev))
+                usbhsh_device_free(hpriv, udev);
+}
+
+static int usbhsh_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+        struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
+        struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+        int roothub_id = 1; /* only 1 root hub */
+
+        /*
+         * does port stat was changed ?
+         * check USB_PORT_STAT_C_xxx << 16
+         */
+        if (usbhsh_port_stat_get(hpriv) & 0xFFFF0000)
+                *buf = (1 << roothub_id);
+        else
+                *buf = 0;
+
+        dev_dbg(dev, "%s (%02x)\n", __func__, *buf);
+
+        return !!(*buf);
+}
+
+static int __usbhsh_hub_hub_feature(struct usbhsh_hpriv *hpriv,
+                                    u16 typeReq, u16 wValue,
+                                    u16 wIndex, char *buf, u16 wLength)
+{
+        struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+
+        switch (wValue) {
+        case C_HUB_OVER_CURRENT:
+        case C_HUB_LOCAL_POWER:
+                dev_dbg(dev, "%s :: C_HUB_xx\n", __func__);
+                return 0;
+        }
+
+        return -EPIPE;
+}
+
+static int __usbhsh_hub_port_feature(struct usbhsh_hpriv *hpriv,
+                                     u16 typeReq, u16 wValue,
+                                     u16 wIndex, char *buf, u16 wLength)
+{
+        struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+        int enable = (typeReq == SetPortFeature);
+        int speed, i, timeout = 128;
+        int roothub_id = 1; /* only 1 root hub */
+
+        /* common error */
+        if (wIndex > roothub_id || wLength != 0)
+                return -EPIPE;
+
+        /* check wValue */
+        switch (wValue) {
+        case USB_PORT_FEAT_POWER:
+                usbhs_vbus_ctrl(priv, enable);
+                dev_dbg(dev, "%s :: USB_PORT_FEAT_POWER\n", __func__);
+                break;
+
+        case USB_PORT_FEAT_ENABLE:
+        case USB_PORT_FEAT_SUSPEND:
+        case USB_PORT_FEAT_C_ENABLE:
+        case USB_PORT_FEAT_C_SUSPEND:
+        case USB_PORT_FEAT_C_CONNECTION:
+        case USB_PORT_FEAT_C_OVER_CURRENT:
+        case USB_PORT_FEAT_C_RESET:
+                dev_dbg(dev, "%s :: USB_PORT_FEAT_xxx\n", __func__);
+                break;
+
+        case USB_PORT_FEAT_RESET:
+                if (!enable)
+                        break;
+
+                usbhsh_port_stat_clear(hpriv,
+                                       USB_PORT_STAT_HIGH_SPEED |
+                                       USB_PORT_STAT_LOW_SPEED);
+
+                usbhs_bus_send_reset(priv);
+                msleep(20);
+                usbhs_bus_send_sof_enable(priv);
+
+                for (i = 0; i < timeout ; i++) {
+                        switch (usbhs_bus_get_speed(priv)) {
+                        case USB_SPEED_LOW:
+                                speed = USB_PORT_STAT_LOW_SPEED;
+                                goto got_usb_bus_speed;
+                        case USB_SPEED_HIGH:
+                                speed = USB_PORT_STAT_HIGH_SPEED;
+                                goto got_usb_bus_speed;
+                        case USB_SPEED_FULL:
+                                speed = 0;
+                                goto got_usb_bus_speed;
+                        }
+
+                        msleep(20);
+                }
+                return -EPIPE;
+
+got_usb_bus_speed:
+                usbhsh_port_stat_set(hpriv, speed);
+                usbhsh_port_stat_set(hpriv, USB_PORT_STAT_ENABLE);
+
+                dev_dbg(dev, "%s :: USB_PORT_FEAT_RESET (speed = %d)\n",
+                        __func__, speed);
+
+                /* status change is not needed */
+                return 0;
+
+        default:
+                return -EPIPE;
+        }
+
+        /* set/clear status */
+        if (enable)
+                usbhsh_port_stat_set(hpriv, (1 << wValue));
+        else
+                usbhsh_port_stat_clear(hpriv, (1 << wValue));
+
+        return 0;
+}
+
+static int __usbhsh_hub_get_status(struct usbhsh_hpriv *hpriv,
+                                   u16 typeReq, u16 wValue,
+                                   u16 wIndex, char *buf, u16 wLength)
+{
+        struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+        struct usb_hub_descriptor *desc = (struct usb_hub_descriptor *)buf;
+        struct device *dev = usbhs_priv_to_dev(priv);
+        int roothub_id = 1; /* only 1 root hub */
+
+        switch (typeReq) {
+        case GetHubStatus:
+                dev_dbg(dev, "%s :: GetHubStatus\n", __func__);
+
+                *buf = 0x00;
+                break;
+
+        case GetPortStatus:
+                if (wIndex != roothub_id)
+                        return -EPIPE;
+
+                dev_dbg(dev, "%s :: GetPortStatus\n", __func__);
+                *(__le32 *)buf = cpu_to_le32(usbhsh_port_stat_get(hpriv));
+                break;
+
+        case GetHubDescriptor:
+                desc->bDescriptorType           = 0x29;
+                desc->bHubContrCurrent          = 0;
+                desc->bNbrPorts                 = roothub_id;
+                desc->bDescLength               = 9;
+                desc->bPwrOn2PwrGood            = 0;
+                desc->wHubCharacteristics       = cpu_to_le16(0x0011);
+                desc->u.hs.DeviceRemovable[0]   = (roothub_id << 1);
+                desc->u.hs.DeviceRemovable[1]   = ~0;
+                dev_dbg(dev, "%s :: GetHubDescriptor\n", __func__);
+                break;
+        }
+
+        return 0;
+}
+
+static int usbhsh_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+                              u16 wIndex, char *buf, u16 wLength)
+{
+        struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
+        struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+        int ret = -EPIPE;
+
+        switch (typeReq) {
+
+        /* Hub Feature */
+        case ClearHubFeature:
+        case SetHubFeature:
+                ret = __usbhsh_hub_hub_feature(hpriv, typeReq,
+                                               wValue, wIndex, buf, wLength);
+                break;
+
+        /* Port Feature */
+        case SetPortFeature:
+        case ClearPortFeature:
+                ret = __usbhsh_hub_port_feature(hpriv, typeReq,
+                                                wValue, wIndex, buf, wLength);
+                break;
+
+        /* Get status */
+        case GetHubStatus:
+        case GetPortStatus:
+        case GetHubDescriptor:
+                ret = __usbhsh_hub_get_status(hpriv, typeReq,
+                                              wValue, wIndex, buf, wLength);
+                break;
+        }
+
+        dev_dbg(dev, "typeReq = %x, ret = %d, port_stat = %x\n",
+                typeReq, ret, usbhsh_port_stat_get(hpriv));
+
+        return ret;
+}
+
+static struct hc_driver usbhsh_driver = {
+        .description =          usbhsh_hcd_name,
+        .hcd_priv_size =        sizeof(struct usbhsh_hpriv),
+
+        /*
+         * generic hardware linkage
+         */
+        .flags =                HCD_USB2,
+
+        .start =                usbhsh_host_start,
+        .stop =                 usbhsh_host_stop,
+
+        /*
+         * managing i/o requests and associated device resources
+         */
+        .urb_enqueue =          usbhsh_urb_enqueue,
+        .urb_dequeue =          usbhsh_urb_dequeue,
+        .endpoint_disable =     usbhsh_endpoint_disable,
+
+        /*
+         * root hub
+         */
+        .hub_status_data =      usbhsh_hub_status_data,
+        .hub_control =          usbhsh_hub_control,
+};
+
+/*
+ *              interrupt functions
+ */
+static int usbhsh_irq_attch(struct usbhs_priv *priv,
+                            struct usbhs_irq_state *irq_state)
+{
+        struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+
+        dev_dbg(dev, "device attached\n");
+
+        usbhsh_port_stat_set(hpriv, USB_PORT_STAT_CONNECTION);
+        usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16);
+
+        return 0;
+}
+
+static int usbhsh_irq_dtch(struct usbhs_priv *priv,
+                           struct usbhs_irq_state *irq_state)
+{
+        struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+
+        dev_dbg(dev, "device detached\n");
+
+        usbhsh_port_stat_clear(hpriv, USB_PORT_STAT_CONNECTION);
+        usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16);
+
+        return 0;
+}
+
+static int usbhsh_irq_setup_ack(struct usbhs_priv *priv,
+                                struct usbhs_irq_state *irq_state)
+{
+        struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+
+        dev_dbg(dev, "setup packet OK\n");
+
+        if (unlikely(!hpriv->done))
+                dev_err(dev, "setup ack happen without necessary data\n");
+        else
+                complete(hpriv->done); /* see usbhsh_urb_enqueue() */
+
+        return 0;
+}
+
+static int usbhsh_irq_setup_err(struct usbhs_priv *priv,
+                                struct usbhs_irq_state *irq_state)
+{
+        struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+
+        dev_dbg(dev, "setup packet Err\n");
+
+        if (unlikely(!hpriv->done))
+                dev_err(dev, "setup err happen without necessary data\n");
+        else
+                complete(hpriv->done); /* see usbhsh_urb_enqueue() */
+
+        return 0;
+}
+
+/*
+ *              module start/stop
+ */
+static void usbhsh_pipe_init_for_host(struct usbhs_priv *priv)
+{
+        struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+        struct usbhsh_pipe_info *pipe_info = hpriv->pipe_info;
+        struct usbhs_pipe *pipe;
+        u32 *pipe_type = usbhs_get_dparam(priv, pipe_type);
+        int pipe_size = usbhs_get_dparam(priv, pipe_size);
+        int old_type, dir_in, i;
+
+        /* init all pipe */
+        old_type = USB_ENDPOINT_XFER_CONTROL;
+        for (i = 0; i < pipe_size; i++) {
+                pipe_info[i].usr_cnt    = 0;
+
+                /*
+                 * data "output" will be finished as soon as possible,
+                 * but there is no guaranty at data "input" case.
+                 *
+                 * "input" needs "standby" pipe.
+                 * So, "input" direction pipe > "output" direction pipe
+                 * is good idea.
+                 *
+                 * 1st USB_ENDPOINT_XFER_xxx will be output direction,
+                 * and the other will be input direction here.
+                 *
+                 * ex)
+                 * ...
+                 * USB_ENDPOINT_XFER_ISOC -> dir out
+                 * USB_ENDPOINT_XFER_ISOC -> dir in
+                 * USB_ENDPOINT_XFER_BULK -> dir out
+                 * USB_ENDPOINT_XFER_BULK -> dir in
+                 * USB_ENDPOINT_XFER_BULK -> dir in
+                 * ...
+                 */
+                dir_in = (pipe_type[i] == old_type);
+                old_type = pipe_type[i];
+
+                if (USB_ENDPOINT_XFER_CONTROL == pipe_type[i]) {
+                        pipe = usbhs_dcp_malloc(priv);
+                        usbhsh_hpriv_to_dcp(hpriv) = pipe;
+                } else {
+                        pipe = usbhs_pipe_malloc(priv,
+                                                 pipe_type[i],
+                                                 dir_in);
+                }
+
+                pipe->mod_private = pipe_info + i;
+        }
+}
+
+static int usbhsh_start(struct usbhs_priv *priv)
+{
+        struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+        struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
+        struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+        int ret;
+
+        /* add hcd */
+        ret = usb_add_hcd(hcd, 0, 0);
+        if (ret < 0)
+                return 0;
+
+        /*
+         * pipe initialize and enable DCP
+         */
+        usbhs_pipe_init(priv,
+                        usbhsh_dma_map_ctrl);
+        usbhs_fifo_init(priv);
+        usbhsh_pipe_init_for_host(priv);
+
+        /*
+         * system config enble
+         * - HI speed
+         * - host
+         * - usb module
+         */
+        usbhs_sys_hispeed_ctrl(priv, 1);
+        usbhs_sys_host_ctrl(priv, 1);
+        usbhs_sys_usb_ctrl(priv, 1);
+
+        /*
+         * enable irq callback
+         */
+        mod->irq_attch          = usbhsh_irq_attch;
+        mod->irq_dtch           = usbhsh_irq_dtch;
+        mod->irq_sack           = usbhsh_irq_setup_ack;
+        mod->irq_sign           = usbhsh_irq_setup_err;
+        usbhs_irq_callback_update(priv, mod);
+
+        dev_dbg(dev, "start host\n");
+
+        return ret;
+}
+
+static int usbhsh_stop(struct usbhs_priv *priv)
+{
+        struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+        struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
+        struct device *dev = usbhs_priv_to_dev(priv);
+
+        usb_remove_hcd(hcd);
+
+        /* disable sys */
+        usbhs_sys_hispeed_ctrl(priv, 0);
+        usbhs_sys_host_ctrl(priv, 0);
+        usbhs_sys_usb_ctrl(priv, 0);
+
+        dev_dbg(dev, "quit host\n");
+
+        return 0;
+}
+
+int __devinit usbhs_mod_host_probe(struct usbhs_priv *priv)
+{
+        struct usbhsh_hpriv *hpriv;
+        struct usb_hcd *hcd;
+        struct usbhsh_pipe_info *pipe_info;
+        struct usbhsh_device *udev;
+        struct device *dev = usbhs_priv_to_dev(priv);
+        int pipe_size = usbhs_get_dparam(priv, pipe_size);
+        int i;
+
+        /* initialize hcd */
+        hcd = usb_create_hcd(&usbhsh_driver, dev, usbhsh_hcd_name);
+        if (!hcd) {
+                dev_err(dev, "Failed to create hcd\n");
+                return -ENOMEM;
+        }
+
+        pipe_info = kzalloc(sizeof(*pipe_info) * pipe_size, GFP_KERNEL);
+        if (!pipe_info) {
+                dev_err(dev, "Could not allocate pipe_info\n");
+                goto usbhs_mod_host_probe_err;
+        }
+
+        /*
+         * CAUTION
+         *
+         * There is no guarantee that it is possible to access usb module here.
+         * Don't accesses to it.
+         * The accesse will be enable after "usbhsh_start"
+         */
+
+        hpriv = usbhsh_hcd_to_hpriv(hcd);
+
+        /*
+         * register itself
+         */
+        usbhs_mod_register(priv, &hpriv->mod, USBHS_HOST);
+
+        /* init hpriv */
+        hpriv->mod.name         = "host";
+        hpriv->mod.start        = usbhsh_start;
+        hpriv->mod.stop         = usbhsh_stop;
+        hpriv->pipe_info        = pipe_info;
+        hpriv->pipe_size        = pipe_size;
+        hpriv->done             = NULL;
+        usbhsh_req_list_init(hpriv);
+        usbhsh_port_stat_init(hpriv);
+
+        /* init all device */
+        usbhsh_for_each_udev_with_dev0(udev, hpriv, i) {
+                udev->usbv      = NULL;
+                INIT_LIST_HEAD(&udev->ep_list_head);
+        }
+
+        dev_info(dev, "host probed\n");
+
+        return 0;
+
+usbhs_mod_host_probe_err:
+        usb_put_hcd(hcd);
+
+        return -ENOMEM;
+}
+
+int __devexit usbhs_mod_host_remove(struct usbhs_priv *priv)
+{
+        struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+        struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
+
+        usbhsh_req_list_quit(hpriv);
+
+        usb_put_hcd(hcd);
+
+        return 0;
+}
diff --git a/drivers/usb/renesas_usbhs/pipe.c b/drivers/usb/renesas_usbhs/pipe.c
index 1b14cae45704..c74389ce2177 100644
--- a/drivers/usb/renesas_usbhs/pipe.c
+++ b/drivers/usb/renesas_usbhs/pipe.c
@@ -29,9 +29,6 @@
 #define usbhsp_flags_has(p, f)  ((p)->flags &   USBHS_PIPE_FLAGS_##f)
 #define usbhsp_flags_init(p)    do {(p)->flags = 0; } while (0)
 
-#define usbhsp_type(p)          ((p)->pipe_type)
-#define usbhsp_type_is(p, t)    ((p)->pipe_type == t)
-
 /*
  * for debug
  */
@@ -42,28 +39,9 @@ static char *usbhsp_pipe_name[] = {
         [USB_ENDPOINT_XFER_ISOC]        = "ISO",
 };
 
-/*
- *              usb request functions
- */
-void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
+char *usbhs_pipe_name(struct usbhs_pipe *pipe)
 {
-        u16 val;
-
-        val = usbhs_read(priv, USBREQ);
-        req->bRequest           = (val >> 8) & 0xFF;
-        req->bRequestType       = (val >> 0) & 0xFF;
-
-        req->wValue     = usbhs_read(priv, USBVAL);
-        req->wIndex     = usbhs_read(priv, USBINDX);
-        req->wLength    = usbhs_read(priv, USBLENG);
-}
-
-void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
-{
-        usbhs_write(priv, USBREQ,  (req->bRequest << 8) | req->bRequestType);
-        usbhs_write(priv, USBVAL,  req->wValue);
-        usbhs_write(priv, USBINDX, req->wIndex);
-        usbhs_write(priv, USBLENG, req->wLength);
+        return usbhsp_pipe_name[usbhs_pipe_type(pipe)];
 }
 
 /*
@@ -106,17 +84,6 @@ static void __usbhsp_pipe_xxx_set(struct usbhs_pipe *pipe,
                 usbhs_bset(priv, pipe_reg, mask, val);
 }
 
-static u16 __usbhsp_pipe_xxx_get(struct usbhs_pipe *pipe,
-                                 u16 dcp_reg, u16 pipe_reg)
-{
-        struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
-
-        if (usbhs_pipe_is_dcp(pipe))
-                return usbhs_read(priv, dcp_reg);
-        else
-                return usbhs_read(priv, pipe_reg);
-}
-
 /*
  *              DCPCFG/PIPECFG functions
  */
@@ -144,11 +111,6 @@ static void usbhsp_pipe_maxp_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
         __usbhsp_pipe_xxx_set(pipe, DCPMAXP, PIPEMAXP, mask, val);
 }
 
-static u16 usbhsp_pipe_maxp_get(struct usbhs_pipe *pipe)
-{
-        return __usbhsp_pipe_xxx_get(pipe, DCPMAXP, PIPEMAXP);
-}
-
 /*
  *              pipe control functions
  */
@@ -303,16 +265,16 @@ static int usbhsp_possible_double_buffer(struct usbhs_pipe *pipe)
         /*
          * only ISO / BULK pipe can use double buffer
          */
-        if (usbhsp_type_is(pipe, USB_ENDPOINT_XFER_BULK) ||
-            usbhsp_type_is(pipe, USB_ENDPOINT_XFER_ISOC))
+        if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) ||
+            usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC))
                 return 1;
 
         return 0;
 }
 
 static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe,
-                                const struct usb_endpoint_descriptor *desc,
-                                int is_host)
+                                int is_host,
+                                int dir_in)
 {
         u16 type = 0;
         u16 bfre = 0;
@@ -341,40 +303,40 @@ static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe,
          */
 
         /* TYPE */
-        type = type_array[usbhsp_type(pipe)];
+        type = type_array[usbhs_pipe_type(pipe)];
 
         /* BFRE */
-        if (usbhsp_type_is(pipe, USB_ENDPOINT_XFER_ISOC) ||
-            usbhsp_type_is(pipe, USB_ENDPOINT_XFER_BULK))
+        if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) ||
+            usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
                 bfre = 0; /* FIXME */
 
         /* DBLB */
-        if (usbhsp_type_is(pipe, USB_ENDPOINT_XFER_ISOC) ||
-            usbhsp_type_is(pipe, USB_ENDPOINT_XFER_BULK))
+        if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) ||
+            usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
                 dblb = (is_double) ? DBLB : 0;
 
         /* CNTMD */
-        if (usbhsp_type_is(pipe, USB_ENDPOINT_XFER_BULK))
+        if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
                 cntmd = 0; /* FIXME */
 
         /* DIR */
-        if (usb_endpoint_dir_in(desc))
+        if (dir_in)
                 usbhsp_flags_set(pipe, IS_DIR_HOST);
 
-        if ((is_host  && usb_endpoint_dir_out(desc)) ||
-            (!is_host && usb_endpoint_dir_in(desc)))
+        if ((is_host  && !dir_in) ||
+            (!is_host && dir_in))
                 dir |= DIR_OUT;
 
         if (!dir)
                 usbhsp_flags_set(pipe, IS_DIR_IN);
 
         /* SHTNAK */
-        if (usbhsp_type_is(pipe, USB_ENDPOINT_XFER_BULK) &&
+        if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) &&
             !dir)
                 shtnak = SHTNAK;
 
         /* EPNUM */
-        epnum = 0xF & usb_endpoint_num(desc);
+        epnum = 0; /* see usbhs_pipe_config_update() */
 
         return  type    |
                 bfre    |
@@ -385,19 +347,7 @@ static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe,
                 epnum;
 }
 
-static u16 usbhsp_setup_pipemaxp(struct usbhs_pipe *pipe,
-                                 const struct usb_endpoint_descriptor *desc,
-                                 int is_host)
-{
-        /* host should set DEVSEL */
-
-        /* reutn MXPS */
-        return PIPE_MAXP_MASK & le16_to_cpu(desc->wMaxPacketSize);
-}
-
-static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe,
-                                 const struct usb_endpoint_descriptor *desc,
-                                 int is_host)
+static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe)
 {
         struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
         struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
@@ -441,9 +391,9 @@ static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe,
          * INT :  64 byte
          * ISOC: 512 byte
          */
-        if (usbhsp_type_is(pipe, USB_ENDPOINT_XFER_CONTROL))
+        if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_CONTROL))
                 buff_size = 256;
-        else if (usbhsp_type_is(pipe, USB_ENDPOINT_XFER_INT))
+        else if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT))
                 buff_size = 64;
         else
                 buff_size = 512;
@@ -453,7 +403,7 @@ static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe,
 
         /* BUFNMB has been reserved for INT pipe
          * see above */
-        if (usbhsp_type_is(pipe, USB_ENDPOINT_XFER_INT)) {
+        if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT)) {
                 bufnmb = pipe_num - 2;
         } else {
                 bufnmb = info->bufnmb_last;
@@ -473,16 +423,42 @@ static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe,
                 (0xff & bufnmb)         <<  0;
 }
 
+void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel,
+                              u16 epnum, u16 maxp)
+{
+        if (devsel > 0xA) {
+                struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+                struct device *dev = usbhs_priv_to_dev(priv);
+
+                dev_err(dev, "devsel error %d\n", devsel);
+
+                devsel = 0;
+        }
+
+        usbhsp_pipe_barrier(pipe);
+
+        pipe->maxp = maxp;
+
+        usbhsp_pipe_select(pipe);
+        usbhsp_pipe_maxp_set(pipe, 0xFFFF,
+                             (devsel << 12) |
+                             maxp);
+
+        if (!usbhs_pipe_is_dcp(pipe))
+                usbhsp_pipe_cfg_set(pipe,  0x000F, epnum);
+}
+
 /*
  *              pipe control
  */
 int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe)
 {
-        u16 mask = usbhs_pipe_is_dcp(pipe) ? DCP_MAXP_MASK : PIPE_MAXP_MASK;
-
-        usbhsp_pipe_select(pipe);
-
-        return (int)(usbhsp_pipe_maxp_get(pipe) & mask);
+        /*
+         * see
+         *      usbhs_pipe_config_update()
+         *      usbhs_dcp_malloc()
+         */
+        return pipe->maxp;
 }
 
 int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe)
@@ -495,9 +471,12 @@ int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe)
         return usbhsp_flags_has(pipe, IS_DIR_HOST);
 }
 
-void usbhs_pipe_clear_sequence(struct usbhs_pipe *pipe)
+void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int data)
 {
-        usbhsp_pipectrl_set(pipe, SQCLR, SQCLR);
+        u16 mask = (SQCLR | SQSET);
+        u16 val = (data) ? SQSET : SQCLR;
+
+        usbhsp_pipectrl_set(pipe, mask, val);
 }
 
 void usbhs_pipe_clear(struct usbhs_pipe *pipe)
@@ -516,7 +495,7 @@ static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type)
          */
         pipe = NULL;
         usbhs_for_each_pipe_with_dcp(pos, priv, i) {
-                if (!usbhsp_type_is(pos, type))
+                if (!usbhs_pipe_type_is(pos, type))
                         continue;
                 if (usbhsp_flags_has(pos, IS_USED))
                         continue;
@@ -538,19 +517,12 @@ static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type)
 }
 
 void usbhs_pipe_init(struct usbhs_priv *priv,
-                     void (*done)(struct usbhs_pkt *pkt),
                      int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map))
 {
         struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
-        struct device *dev = usbhs_priv_to_dev(priv);
         struct usbhs_pipe *pipe;
         int i;
 
-        if (!done) {
-                dev_err(dev, "no done function\n");
-                return;
-        }
-
         /*
          * FIXME
          *
@@ -565,7 +537,7 @@ void usbhs_pipe_init(struct usbhs_priv *priv,
          */
         info->bufnmb_last = 4;
         usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
-                if (usbhsp_type_is(pipe, USB_ENDPOINT_XFER_INT))
+                if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT))
                         info->bufnmb_last++;
 
                 usbhsp_flags_init(pipe);
@@ -577,24 +549,23 @@ void usbhs_pipe_init(struct usbhs_priv *priv,
                 usbhs_pipe_clear(pipe);
         }
 
-        info->done = done;
         info->dma_map_ctrl = dma_map_ctrl;
 }
 
 struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
-                                     const struct usb_endpoint_descriptor *desc)
+                                     int endpoint_type,
+                                     int dir_in)
 {
         struct device *dev = usbhs_priv_to_dev(priv);
-        struct usbhs_mod *mod = usbhs_mod_get_current(priv);
         struct usbhs_pipe *pipe;
-        int is_host = usbhs_mod_is_host(priv, mod);
+        int is_host = usbhs_mod_is_host(priv);
         int ret;
-        u16 pipecfg, pipebuf, pipemaxp;
+        u16 pipecfg, pipebuf;
 
-        pipe = usbhsp_get_pipe(priv, usb_endpoint_type(desc));
+        pipe = usbhsp_get_pipe(priv, endpoint_type);
         if (!pipe) {
                 dev_err(dev, "can't get pipe (%s)\n",
-                        usbhsp_pipe_name[usb_endpoint_type(desc)]);
+                        usbhsp_pipe_name[endpoint_type]);
                 return NULL;
         }
 
@@ -609,22 +580,25 @@ struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
                 return NULL;
         }
 
-        pipecfg  = usbhsp_setup_pipecfg(pipe,  desc, is_host);
-        pipebuf  = usbhsp_setup_pipebuff(pipe, desc, is_host);
-        pipemaxp = usbhsp_setup_pipemaxp(pipe, desc, is_host);
+        pipecfg  = usbhsp_setup_pipecfg(pipe, is_host, dir_in);
+        pipebuf  = usbhsp_setup_pipebuff(pipe);
 
         usbhsp_pipe_select(pipe);
         usbhsp_pipe_cfg_set(pipe, 0xFFFF, pipecfg);
         usbhsp_pipe_buf_set(pipe, 0xFFFF, pipebuf);
-        usbhsp_pipe_maxp_set(pipe, 0xFFFF, pipemaxp);
 
-        usbhs_pipe_clear_sequence(pipe);
+        usbhs_pipe_sequence_data0(pipe);
 
         dev_dbg(dev, "enable pipe %d : %s (%s)\n",
                 usbhs_pipe_number(pipe),
-                usbhsp_pipe_name[usb_endpoint_type(desc)],
+                usbhs_pipe_name(pipe),
                 usbhs_pipe_is_dir_in(pipe) ? "in" : "out");
 
+        /*
+         * epnum / maxp are still not set to this pipe.
+         * call usbhs_pipe_config_update() after this function !!
+         */
+
         return pipe;
 }
 
@@ -651,25 +625,31 @@ struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv)
         if (!pipe)
                 return NULL;
 
+        INIT_LIST_HEAD(&pipe->list);
+
         /*
-         * dcpcfg  : default
-         * dcpmaxp : default
-         * pipebuf : nothing to do
+         * call usbhs_pipe_config_update() after this function !!
          */
 
-        usbhsp_pipe_select(pipe);
-        usbhs_pipe_clear_sequence(pipe);
-        INIT_LIST_HEAD(&pipe->list);
-
         return pipe;
 }
 
 void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe)
 {
+        struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+
         WARN_ON(!usbhs_pipe_is_dcp(pipe));
 
         usbhs_pipe_enable(pipe);
-        usbhsp_pipectrl_set(pipe, CCPL, CCPL);
+
+        if (!usbhs_mod_is_host(priv)) /* funconly */
+                usbhsp_pipectrl_set(pipe, CCPL, CCPL);
+}
+
+void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out)
+{
+        usbhsp_pipe_cfg_set(pipe, DIR_OUT,
+                            dir_out ? DIR_OUT : 0);
 }
 
 /*
@@ -703,7 +683,9 @@ int usbhs_pipe_probe(struct usbhs_priv *priv)
          */
         usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
                 pipe->priv = priv;
-                usbhsp_type(pipe) = pipe_type[i] & USB_ENDPOINT_XFERTYPE_MASK;
+
+                usbhs_pipe_type(pipe) =
+                        pipe_type[i] & USB_ENDPOINT_XFERTYPE_MASK;
 
                 dev_dbg(dev, "pipe %x\t: %s\n",
                         i, usbhsp_pipe_name[pipe_type[i]]);
diff --git a/drivers/usb/renesas_usbhs/pipe.h b/drivers/usb/renesas_usbhs/pipe.h
index 41534cb0e734..6334fc644cc0 100644
--- a/drivers/usb/renesas_usbhs/pipe.h
+++ b/drivers/usb/renesas_usbhs/pipe.h
@@ -30,11 +30,15 @@ struct usbhs_pipe {
         struct usbhs_fifo *fifo;
         struct list_head list;
 
+        int maxp;
+
         u32 flags;
 #define USBHS_PIPE_FLAGS_IS_USED                (1 << 0)
 #define USBHS_PIPE_FLAGS_IS_DIR_IN              (1 << 1)
 #define USBHS_PIPE_FLAGS_IS_DIR_HOST            (1 << 2)
 
+        struct usbhs_pkt_handle *handler;
+
         void *mod_private;
 };
 
@@ -43,7 +47,6 @@ struct usbhs_pipe_info {
         int size;       /* array size of "pipe" */
         int bufnmb_last;        /* FIXME : driver needs good allocator */
 
-        void (*done)(struct usbhs_pkt *pkt);
         int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map);
 };
 
@@ -67,32 +70,30 @@ struct usbhs_pipe_info {
 #define usbhs_priv_to_pipeinfo(pr)      (&(pr)->pipe_info)
 
 /*
- * usb request
- */
-void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req);
-void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req);
-
-/*
  * pipe control
  */
+char *usbhs_pipe_name(struct usbhs_pipe *pipe);
 struct usbhs_pipe
-*usbhs_pipe_malloc(struct usbhs_priv *priv,
-                   const struct usb_endpoint_descriptor *desc);
+*usbhs_pipe_malloc(struct usbhs_priv *priv, int endpoint_type, int dir_in);
 int usbhs_pipe_probe(struct usbhs_priv *priv);
 void usbhs_pipe_remove(struct usbhs_priv *priv);
 int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe);
 int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe);
 void usbhs_pipe_init(struct usbhs_priv *priv,
-                     void (*done)(struct usbhs_pkt *pkt),
                      int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map));
 int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe);
-void usbhs_pipe_clear_sequence(struct usbhs_pipe *pipe);
 void usbhs_pipe_clear(struct usbhs_pipe *pipe);
 int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe);
 void usbhs_pipe_enable(struct usbhs_pipe *pipe);
 void usbhs_pipe_disable(struct usbhs_pipe *pipe);
 void usbhs_pipe_stall(struct usbhs_pipe *pipe);
 void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo);
+void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel,
+                              u16 epnum, u16 maxp);
+
+#define usbhs_pipe_sequence_data0(pipe) usbhs_pipe_data_sequence(pipe, 0)
+#define usbhs_pipe_sequence_data1(pipe) usbhs_pipe_data_sequence(pipe, 1)
+void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int data);
 
 #define usbhs_pipe_to_priv(p)   ((p)->priv)
 #define usbhs_pipe_number(p)    (int)((p) - (p)->priv->pipe_info.pipe)
@@ -100,10 +101,14 @@ void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo);
 #define usbhs_pipe_to_fifo(p)   ((p)->fifo)
 #define usbhs_pipe_is_busy(p)   usbhs_pipe_to_fifo(p)
 
+#define usbhs_pipe_type(p)              ((p)->pipe_type)
+#define usbhs_pipe_type_is(p, t)        ((p)->pipe_type == t)
+
 /*
  * dcp control
  */
 struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv);
 void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe);
+void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out);
 
 #endif /* RENESAS_USB_PIPE_H */
diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index b71e309116a3..677f577c0243 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -252,6 +252,7 @@ config USB_SERIAL_GARMIN
 
 config USB_SERIAL_IPW
         tristate "USB IPWireless (3G UMTS TDD) Driver"
+        select USB_SERIAL_WWAN
         help
           Say Y here if you want to use a IPWireless USB modem such as
           the ones supplied by Axity3G/Sentech South Africa.
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 5fc13e717911..8fe034d2d3e7 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -73,6 +73,7 @@ struct ftdi_private {
                                  */
         int flags;              /* some ASYNC_xxxx flags are supported */
         unsigned long last_dtr_rts;     /* saved modem control outputs */
+        struct async_icount     icount;
         wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
         char prev_status, diff_status;        /* Used for TIOCMIWAIT */
         char transmit_empty;    /* If transmitter is empty or not */
@@ -207,6 +208,8 @@ static struct usb_device_id id_table_combined [] = {
         { USB_DEVICE(FTDI_VID, FTDI_XF_640_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_XF_642_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_DSS20_PID) },
+        { USB_DEVICE(FTDI_VID, FTDI_URBAN_0_PID) },
+        { USB_DEVICE(FTDI_VID, FTDI_URBAN_1_PID) },
         { USB_DEVICE(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_VNHCPCUSB_D_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_MTXORB_0_PID) },
@@ -745,6 +748,8 @@ static struct usb_device_id id_table_combined [] = {
                 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
         { USB_DEVICE(FTDI_VID, LMI_LM3S_EVAL_BOARD_PID),
                 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
+        { USB_DEVICE(FTDI_VID, LMI_LM3S_ICDI_BOARD_PID),
+                .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
         { USB_DEVICE(FTDI_VID, FTDI_TURTELIZER_PID),
                 .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
         { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
@@ -885,6 +890,8 @@ static void ftdi_set_termios(struct tty_struct *tty,
 static int  ftdi_tiocmget(struct tty_struct *tty);
 static int  ftdi_tiocmset(struct tty_struct *tty,
                         unsigned int set, unsigned int clear);
+static int ftdi_get_icount(struct tty_struct *tty,
+                           struct serial_icounter_struct *icount);
 static int  ftdi_ioctl(struct tty_struct *tty,
                         unsigned int cmd, unsigned long arg);
 static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
@@ -919,6 +926,7 @@ static struct usb_serial_driver ftdi_sio_device = {
         .prepare_write_buffer = ftdi_prepare_write_buffer,
         .tiocmget =             ftdi_tiocmget,
         .tiocmset =             ftdi_tiocmset,
+        .get_icount =           ftdi_get_icount,
         .ioctl =                ftdi_ioctl,
         .set_termios =          ftdi_set_termios,
         .break_ctl =            ftdi_break_ctl,
@@ -1486,7 +1494,7 @@ static void ftdi_set_max_packet_size(struct usb_serial_port *port)
         }
 
         /* set max packet size based on descriptor */
-        priv->max_packet_size = le16_to_cpu(ep_desc->wMaxPacketSize);
+        priv->max_packet_size = usb_endpoint_maxp(ep_desc);
 
         dev_info(&udev->dev, "Setting MaxPacketSize %d\n", priv->max_packet_size);
 }
@@ -1646,6 +1654,7 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port)
 
         kref_init(&priv->kref);
         mutex_init(&priv->cfg_lock);
+        memset(&priv->icount, 0x00, sizeof(priv->icount));
         init_waitqueue_head(&priv->delta_msr_wait);
 
         priv->flags = ASYNC_LOW_LATENCY;
@@ -1909,6 +1918,7 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port,
                         c = kfifo_out(&port->write_fifo, &buffer[i + 1], len);
                         if (!c)
                                 break;
+                        priv->icount.tx += c;
                         buffer[i] = (c << 2) + 1;
                         count += c + 1;
                 }
@@ -1916,6 +1926,7 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port,
         } else {
                 count = kfifo_out_locked(&port->write_fifo, dest, size,
                                                                 &port->lock);
+                priv->icount.tx += count;
         }
 
         return count;
@@ -1943,6 +1954,14 @@ static int ftdi_process_packet(struct tty_struct *tty,
            N.B. packet may be processed more than once, but differences
            are only processed once.  */
         status = packet[0] & FTDI_STATUS_B0_MASK;
+        if (status & FTDI_RS0_CTS)
+                priv->icount.cts++;
+        if (status & FTDI_RS0_DSR)
+                priv->icount.dsr++;
+        if (status & FTDI_RS0_RI)
+                priv->icount.rng++;
+        if (status & FTDI_RS0_RLSD)
+                priv->icount.dcd++;
         if (status != priv->prev_status) {
                 priv->diff_status |= status ^ priv->prev_status;
                 wake_up_interruptible(&priv->delta_msr_wait);
@@ -1955,15 +1974,20 @@ static int ftdi_process_packet(struct tty_struct *tty,
                  * over framing errors */
                 if (packet[1] & FTDI_RS_BI) {
                         flag = TTY_BREAK;
+                        priv->icount.brk++;
                         usb_serial_handle_break(port);
                 } else if (packet[1] & FTDI_RS_PE) {
                         flag = TTY_PARITY;
+                        priv->icount.parity++;
                 } else if (packet[1] & FTDI_RS_FE) {
                         flag = TTY_FRAME;
+                        priv->icount.frame++;
                 }
                 /* Overrun is special, not associated with a char */
-                if (packet[1] & FTDI_RS_OE)
+                if (packet[1] & FTDI_RS_OE) {
+                        priv->icount.overrun++;
                         tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+                }
         }
 
         /* save if the transmitter is empty or not */
@@ -1975,6 +1999,7 @@ static int ftdi_process_packet(struct tty_struct *tty,
         len -= 2;
         if (!len)
                 return 0;       /* status only */
+        priv->icount.rx += len;
         ch = packet + 2;
 
         if (port->port.console && port->sysrq) {
@@ -2277,11 +2302,34 @@ static int ftdi_tiocmset(struct tty_struct *tty,
         return update_mctrl(port, set, clear);
 }
 
+static int ftdi_get_icount(struct tty_struct *tty,
+                                struct serial_icounter_struct *icount)
+{
+        struct usb_serial_port *port = tty->driver_data;
+        struct ftdi_private *priv = usb_get_serial_port_data(port);
+        struct async_icount *ic = &priv->icount;
+
+        icount->cts = ic->cts;
+        icount->dsr = ic->dsr;
+        icount->rng = ic->rng;
+        icount->dcd = ic->dcd;
+        icount->tx = ic->tx;
+        icount->rx = ic->rx;
+        icount->frame = ic->frame;
+        icount->parity = ic->parity;
+        icount->overrun = ic->overrun;
+        icount->brk = ic->brk;
+        icount->buf_overrun = ic->buf_overrun;
+        return 0;
+}
+
 static int ftdi_ioctl(struct tty_struct *tty,
                                         unsigned int cmd, unsigned long arg)
 {
         struct usb_serial_port *port = tty->driver_data;
         struct ftdi_private *priv = usb_get_serial_port_data(port);
+        struct async_icount cnow;
+        struct async_icount cprev;
 
         dbg("%s cmd 0x%04x", __func__, cmd);
 
@@ -2301,41 +2349,30 @@ static int ftdi_ioctl(struct tty_struct *tty,
          * - mask passed in arg for lines of interest
          *   (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
          * Caller should use TIOCGICOUNT to see which one it was.
-         * (except that the driver doesn't support it !)
          *
          * This code is borrowed from linux/drivers/char/serial.c
          */
         case TIOCMIWAIT:
-                while (priv != NULL) {
+                cprev = priv->icount;
+                while (1) {
                         interruptible_sleep_on(&priv->delta_msr_wait);
                         /* see if a signal did it */
                         if (signal_pending(current))
                                 return -ERESTARTSYS;
-                        else {
-                                char diff = priv->diff_status;
-
-                                if (diff == 0)
-                                        return -EIO; /* no change => error */
-
-                                /* Consume all events */
-                                priv->diff_status = 0;
-
-                                /* Return 0 if caller wanted to know about
-                                   these bits */
-                                if (((arg & TIOCM_RNG) && (diff & FTDI_RS0_RI)) ||
-                                    ((arg & TIOCM_DSR) && (diff & FTDI_RS0_DSR)) ||
-                                    ((arg & TIOCM_CD)  && (diff & FTDI_RS0_RLSD)) ||
-                                    ((arg & TIOCM_CTS) && (diff & FTDI_RS0_CTS))) {
-                                        return 0;
-                                }
-                                /*
-                                 * Otherwise caller can't care less about what
-                                 * happened,and so we continue to wait for more
-                                 * events.
-                                 */
+                        cnow = priv->icount;
+                        if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
+                            cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
+                                return -EIO; /* no change => error */
+                        if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
+                            ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
+                            ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
+                            ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
+                                return 0;
                         }
+                        cprev = cnow;
                 }
-                return 0;
+                /* not reached */
+                break;
         case TIOCSERGETLSR:
                 return get_lsr_info(port, (struct serial_struct __user *)arg);
                 break;
diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
index bf5227ad3ef7..571fa96b49c7 100644
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -54,6 +54,7 @@
 /* FTDI 2332C Dual channel device, side A=245 FIFO (JTAG), Side B=RS232 UART */
 #define LMI_LM3S_DEVEL_BOARD_PID        0xbcd8
 #define LMI_LM3S_EVAL_BOARD_PID         0xbcd9
+#define LMI_LM3S_ICDI_BOARD_PID         0xbcda
 
 #define FTDI_TURTELIZER_PID     0xBDC8 /* JTAG/RS-232 adapter by egnite GmbH */
 
@@ -420,9 +421,11 @@
 #define PROTEGO_SPECIAL_4       0xFC73  /* special/unknown device */
 
 /*
- * DSS-20 Sync Station for Sony Ericsson P800
+ * Sony Ericsson product ids
  */
-#define FTDI_DSS20_PID          0xFC82
+#define FTDI_DSS20_PID          0xFC82  /* DSS-20 Sync Station for Sony Ericsson P800 */
+#define FTDI_URBAN_0_PID        0xFC8A  /* Sony Ericsson Urban, uart #0 */
+#define FTDI_URBAN_1_PID        0xFC8B  /* Sony Ericsson Urban, uart #1 */
 
 /* www.irtrans.de device */
 #define FTDI_IRTRANS_PID 0xFC60 /* Product Id */
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index abf095be5753..2ee807523f53 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -3042,7 +3042,7 @@ static int edge_startup(struct usb_serial *serial)
 
                         endpoint = &serial->interface->altsetting[0].
                                                         endpoint[i].desc;
-                        buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+                        buffer_size = usb_endpoint_maxp(endpoint);
                         if (!interrupt_in_found &&
                             (usb_endpoint_is_int_in(endpoint))) {
                                 /* we found a interrupt in endpoint */
@@ -3107,7 +3107,7 @@ static int edge_startup(struct usb_serial *serial)
                                         usb_rcvbulkpipe(dev,
                                                 endpoint->bEndpointAddress),
                                         edge_serial->bulk_in_buffer,
-                                        le16_to_cpu(endpoint->wMaxPacketSize),
+                                        usb_endpoint_maxp(endpoint),
                                         edge_bulk_in_callback,
                                         edge_serial);
                                 bulk_in_found = true;
diff --git a/drivers/usb/serial/ipw.c b/drivers/usb/serial/ipw.c
index ca77e88836bd..5170799d6e94 100644
--- a/drivers/usb/serial/ipw.c
+++ b/drivers/usb/serial/ipw.c
@@ -47,6 +47,7 @@
 #include <linux/usb.h>
 #include <linux/usb/serial.h>
 #include <linux/uaccess.h>
+#include "usb-wwan.h"
 
 /*
  * Version Information
@@ -185,7 +186,7 @@ static int ipw_open(struct tty_struct *tty, struct usb_serial_port *port)
 
         /*--2: Start reading from the device */
         dbg("%s: setting up bulk read callback", __func__);
-        usb_serial_generic_open(tty, port);
+        usb_wwan_open(tty, port);
 
         /*--3: Tell the modem to open the floodgates on the rx bulk channel */
         dbg("%s:asking modem for RxRead (RXBULK_ON)", __func__);
@@ -219,6 +220,29 @@ static int ipw_open(struct tty_struct *tty, struct usb_serial_port *port)
         return 0;
 }
 
+/* fake probe - only to allocate data structures */
+static int ipw_probe(struct usb_serial *serial, const struct usb_device_id *id)
+{
+        struct usb_wwan_intf_private *data;
+
+        data = kzalloc(sizeof(struct usb_wwan_intf_private), GFP_KERNEL);
+        if (!data)
+                return -ENOMEM;
+
+        spin_lock_init(&data->susp_lock);
+        usb_set_serial_data(serial, data);
+        return 0;
+}
+
+static void ipw_release(struct usb_serial *serial)
+{
+        struct usb_wwan_intf_private *data = usb_get_serial_data(serial);
+
+        usb_wwan_release(serial);
+        usb_set_serial_data(serial, NULL);
+        kfree(data);
+}
+
 static void ipw_dtr_rts(struct usb_serial_port *port, int on)
 {
         struct usb_device *dev = port->serial->dev;
@@ -285,7 +309,7 @@ static void ipw_close(struct usb_serial_port *port)
                 dev_err(&port->dev,
                         "Disabling bulk RxRead failed (error = %d)\n", result);
 
-        usb_serial_generic_close(port);
+        usb_wwan_close(port);
 }
 
 static struct usb_serial_driver ipw_device = {
@@ -297,9 +321,14 @@ static struct usb_serial_driver ipw_device = {
         .usb_driver =           &usb_ipw_driver,
         .id_table =             usb_ipw_ids,
         .num_ports =            1,
+        .disconnect =           usb_wwan_disconnect,
         .open =                 ipw_open,
         .close =                ipw_close,
+        .probe =                ipw_probe,
+        .attach =               usb_wwan_startup,
+        .release =              ipw_release,
         .dtr_rts =              ipw_dtr_rts,
+        .write =                usb_wwan_write,
 };
 
 
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index 96423f3c8ef3..c248a9147439 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -523,7 +523,7 @@ static int opticon_startup(struct usb_serial *serial)
                         goto error;
                 }
 
-                priv->buffer_size = le16_to_cpu(endpoint->wMaxPacketSize) * 2;
+                priv->buffer_size = usb_endpoint_maxp(endpoint) * 2;
                 priv->bulk_in_buffer = kmalloc(priv->buffer_size, GFP_KERNEL);
                 if (!priv->bulk_in_buffer) {
                         dev_err(&priv->udev->dev, "out of memory\n");
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index fe22e90bc879..89ae1f65e1b1 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -475,31 +475,54 @@ enum option_blacklist_reason {
                 OPTION_BLACKLIST_RESERVED_IF = 2
 };
 
+#define MAX_BL_NUM  8
 struct option_blacklist_info {
-        const u32 infolen;      /* number of interface numbers on blacklist */
-        const u8  *ifaceinfo;   /* pointer to the array holding the numbers */
-        enum option_blacklist_reason reason;
+        /* bitfield of interface numbers for OPTION_BLACKLIST_SENDSETUP */
+        const unsigned long sendsetup;
+        /* bitfield of interface numbers for OPTION_BLACKLIST_RESERVED_IF */
+        const unsigned long reserved;
 };
 
-static const u8 four_g_w14_no_sendsetup[] = { 0, 1 };
 static const struct option_blacklist_info four_g_w14_blacklist = {
-        .infolen = ARRAY_SIZE(four_g_w14_no_sendsetup),
-        .ifaceinfo = four_g_w14_no_sendsetup,
-        .reason = OPTION_BLACKLIST_SENDSETUP
+        .sendsetup = BIT(0) | BIT(1),
 };
 
-static const u8 alcatel_x200_no_sendsetup[] = { 0, 1 };
 static const struct option_blacklist_info alcatel_x200_blacklist = {
-        .infolen = ARRAY_SIZE(alcatel_x200_no_sendsetup),
-        .ifaceinfo = alcatel_x200_no_sendsetup,
-        .reason = OPTION_BLACKLIST_SENDSETUP
+        .sendsetup = BIT(0) | BIT(1),
+};
+
+static const struct option_blacklist_info zte_0037_blacklist = {
+        .sendsetup = BIT(0) | BIT(1),
 };
 
-static const u8 zte_k3765_z_no_sendsetup[] = { 0, 1, 2 };
 static const struct option_blacklist_info zte_k3765_z_blacklist = {
-        .infolen = ARRAY_SIZE(zte_k3765_z_no_sendsetup),
-        .ifaceinfo = zte_k3765_z_no_sendsetup,
-        .reason = OPTION_BLACKLIST_SENDSETUP
+        .sendsetup = BIT(0) | BIT(1) | BIT(2),
+        .reserved = BIT(4),
+};
+
+static const struct option_blacklist_info huawei_cdc12_blacklist = {
+        .reserved = BIT(1) | BIT(2),
+};
+
+static const struct option_blacklist_info net_intf1_blacklist = {
+        .reserved = BIT(1),
+};
+
+static const struct option_blacklist_info net_intf3_blacklist = {
+        .reserved = BIT(3),
+};
+
+static const struct option_blacklist_info net_intf4_blacklist = {
+        .reserved = BIT(4),
+};
+
+static const struct option_blacklist_info net_intf5_blacklist = {
+        .reserved = BIT(5),
+};
+
+static const struct option_blacklist_info zte_mf626_blacklist = {
+        .sendsetup = BIT(0) | BIT(1),
+        .reserved = BIT(4),
 };
 
 static const struct usb_device_id option_ids[] = {
@@ -599,12 +622,15 @@ static const struct usb_device_id option_ids[] = {
         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E143D, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E143E, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E143F, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4505, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K3765, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4505, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist },
+        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K3765, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_ETS1220, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E14AC, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K3806, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4605, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4605, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K3770, 0xff, 0x02, 0x31) },
         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K3770, 0xff, 0x02, 0x32) },
         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K3771, 0xff, 0x02, 0x31) },
@@ -705,7 +731,8 @@ static const struct usb_device_id option_ids[] = {
         { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UC864E) },
         { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UC864G) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF622, 0xff, 0xff, 0xff) }, /* ZTE WCDMA products */
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0002, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0002, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf1_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0003, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0004, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0005, 0xff, 0xff, 0xff) },
@@ -720,51 +747,62 @@ static const struct usb_device_id option_ids[] = {
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x000f, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0010, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0011, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0012, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0012, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf1_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0013, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0014, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF628, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0016, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0017, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0017, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf3_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0018, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0019, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0020, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0021, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0021, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0022, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0023, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0024, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0025, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0025, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf1_blacklist },
         /* { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0026, 0xff, 0xff, 0xff) }, */
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0028, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0029, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0030, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF626, 0xff,
-          0xff, 0xff), .driver_info = (kernel_ulong_t)&four_g_w14_blacklist },
+          0xff, 0xff), .driver_info = (kernel_ulong_t)&zte_mf626_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0032, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0033, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0034, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0037, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0037, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&zte_0037_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0038, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0039, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0040, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0042, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0042, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0043, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0044, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0048, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0049, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0049, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf5_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0050, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0051, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0052, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0052, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
         /* { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0053, 0xff, 0xff, 0xff) }, */
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0054, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0055, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0055, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf1_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0056, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0057, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0058, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0058, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0059, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0061, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0062, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0063, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0063, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0064, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0065, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0066, 0xff, 0xff, 0xff) },
@@ -779,11 +817,13 @@ static const struct usb_device_id option_ids[] = {
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0083, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0086, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0087, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0104, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0104, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0105, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0106, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0108, 0xff, 0xff, 0xff) },
-        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0113, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0113, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf5_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0117, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0118, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0121, 0xff, 0xff, 0xff) },
@@ -1214,10 +1254,35 @@ static void __exit option_exit(void)
 module_init(option_init);
 module_exit(option_exit);
 
+static bool is_blacklisted(const u8 ifnum, enum option_blacklist_reason reason,
+                           const struct option_blacklist_info *blacklist)
+{
+        unsigned long num;
+        const unsigned long *intf_list;
+
+        if (blacklist) {
+                if (reason == OPTION_BLACKLIST_SENDSETUP)
+                        intf_list = &blacklist->sendsetup;
+                else if (reason == OPTION_BLACKLIST_RESERVED_IF)
+                        intf_list = &blacklist->reserved;
+                else {
+                        BUG_ON(reason);
+                        return false;
+                }
+
+                for_each_set_bit(num, intf_list, MAX_BL_NUM + 1) {
+                        if (num == ifnum)
+                                return true;
+                }
+        }
+        return false;
+}
+
 static int option_probe(struct usb_serial *serial,
                         const struct usb_device_id *id)
 {
         struct usb_wwan_intf_private *data;
+
         /* D-Link DWM 652 still exposes CD-Rom emulation interface in modem mode */
         if (serial->dev->descriptor.idVendor == DLINK_VENDOR_ID &&
                 serial->dev->descriptor.idProduct == DLINK_PRODUCT_DWM_652 &&
@@ -1230,14 +1295,14 @@ static int option_probe(struct usb_serial *serial,
                 serial->interface->cur_altsetting->desc.bInterfaceClass != 0xff)
                 return -ENODEV;
 
-        /* Don't bind network interfaces on Huawei K3765, K4505 & K4605 */
-        if (serial->dev->descriptor.idVendor == HUAWEI_VENDOR_ID &&
-                (serial->dev->descriptor.idProduct == HUAWEI_PRODUCT_K3765 ||
-                        serial->dev->descriptor.idProduct == HUAWEI_PRODUCT_K4505 ||
-                        serial->dev->descriptor.idProduct == HUAWEI_PRODUCT_K4605) &&
-                (serial->interface->cur_altsetting->desc.bInterfaceNumber == 1 ||
-                        serial->interface->cur_altsetting->desc.bInterfaceNumber == 2))
-                return -ENODEV;
+        /* Don't bind reserved interfaces (like network ones) which often have
+         * the same class/subclass/protocol as the serial interfaces.  Look at
+         * the Windows driver .INF files for reserved interface numbers.
+         */
+        if (is_blacklisted(
+                serial->interface->cur_altsetting->desc.bInterfaceNumber,
+                OPTION_BLACKLIST_RESERVED_IF,
+                (const struct option_blacklist_info *) id->driver_info))
 
         /* Don't bind network interface on Samsung GT-B3730, it is handled by a separate module */
         if (serial->dev->descriptor.idVendor == SAMSUNG_VENDOR_ID &&
@@ -1246,7 +1311,6 @@ static int option_probe(struct usb_serial *serial,
                 return -ENODEV;
 
         data = serial->private = kzalloc(sizeof(struct usb_wwan_intf_private), GFP_KERNEL);
-
         if (!data)
                 return -ENOMEM;
         data->send_setup = option_send_setup;
@@ -1255,23 +1319,6 @@ static int option_probe(struct usb_serial *serial,
         return 0;
 }
 
-static enum option_blacklist_reason is_blacklisted(const u8 ifnum,
-                                const struct option_blacklist_info *blacklist)
-{
-        const u8  *info;
-        int i;
-
-        if (blacklist) {
-                info = blacklist->ifaceinfo;
-
-                for (i = 0; i < blacklist->infolen; i++) {
-                        if (info[i] == ifnum)
-                                return blacklist->reason;
-                }
-        }
-        return OPTION_BLACKLIST_NONE;
-}
-
 static void option_instat_callback(struct urb *urb)
 {
         int err;
@@ -1343,9 +1390,8 @@ static int option_send_setup(struct usb_serial_port *port)
         int val = 0;
         dbg("%s", __func__);
 
-        if (is_blacklisted(ifNum,
-                           (struct option_blacklist_info *) intfdata->private)
-            == OPTION_BLACKLIST_SENDSETUP) {
+        if (is_blacklisted(ifNum, OPTION_BLACKLIST_SENDSETUP,
+                        (struct option_blacklist_info *) intfdata->private)) {
                 dbg("No send_setup on blacklisted interface #%d\n", ifNum);
                 return -EIO;
         }
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 1d33260de014..9083d1e616b4 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -92,6 +92,7 @@ static const struct usb_device_id id_table[] = {
         { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) },
         { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) },
         { USB_DEVICE(WINCHIPHEAD_VENDOR_ID, WINCHIPHEAD_USBSER_PRODUCT_ID) },
+        { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) },
         { }                                     /* Terminating entry */
 };
 
@@ -360,9 +361,6 @@ static void pl2303_set_termios(struct tty_struct *tty,
                                 tmp >>= 2;
                                 buf[1] <<= 1;
                         }
-                        if (tmp > 256) {
-                                tmp %= 256;
-                        }
                         buf[0] = tmp;
                 }
         }
diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h
index ca0d237683b3..3d10d7f02072 100644
--- a/drivers/usb/serial/pl2303.h
+++ b/drivers/usb/serial/pl2303.h
@@ -148,3 +148,8 @@
 /* WinChipHead USB->RS 232 adapter */
 #define WINCHIPHEAD_VENDOR_ID           0x4348
 #define WINCHIPHEAD_USBSER_PRODUCT_ID   0x5523
+
+/* SMART USB Serial Adapter */
+#define SMART_VENDOR_ID 0x0b8c
+#define SMART_PRODUCT_ID        0x2303
+
diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
index aeccc7f0a93c..b9bb24729c99 100644
--- a/drivers/usb/serial/qcserial.c
+++ b/drivers/usb/serial/qcserial.c
@@ -28,6 +28,7 @@ static const struct usb_device_id id_table[] = {
         {USB_DEVICE(0x05c6, 0x9212)},   /* Acer Gobi Modem Device */
         {USB_DEVICE(0x03f0, 0x1f1d)},   /* HP un2400 Gobi Modem Device */
         {USB_DEVICE(0x03f0, 0x201d)},   /* HP un2400 Gobi QDL Device */
+        {USB_DEVICE(0x03f0, 0x371d)},   /* HP un2430 Mobile Broadband Module */
         {USB_DEVICE(0x04da, 0x250d)},   /* Panasonic Gobi Modem device */
         {USB_DEVICE(0x04da, 0x250c)},   /* Panasonic Gobi QDL device */
         {USB_DEVICE(0x413c, 0x8172)},   /* Dell Gobi Modem device */
@@ -84,6 +85,7 @@ static const struct usb_device_id id_table[] = {
         {USB_DEVICE(0x16d8, 0x8002)},   /* CMDTech Gobi 2000 Modem device (VU922) */
         {USB_DEVICE(0x05c6, 0x9204)},   /* Gobi 2000 QDL device */
         {USB_DEVICE(0x05c6, 0x9205)},   /* Gobi 2000 Modem device */
+        {USB_DEVICE(0x1199, 0x9013)},   /* Sierra Wireless Gobi 3000 Modem device (MC8355) */
         { }                             /* Terminating entry */
 };
 MODULE_DEVICE_TABLE(usb, id_table);
diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c
index d9457bd4fe10..7096f799b071 100644
--- a/drivers/usb/serial/symbolserial.c
+++ b/drivers/usb/serial/symbolserial.c
@@ -226,7 +226,7 @@ static int symbol_startup(struct usb_serial *serial)
                         goto error;
                 }
 
-                priv->buffer_size = le16_to_cpu(endpoint->wMaxPacketSize) * 2;
+                priv->buffer_size = usb_endpoint_maxp(endpoint) * 2;
                 priv->int_buffer = kmalloc(priv->buffer_size, GFP_KERNEL);
                 if (!priv->int_buffer) {
                         dev_err(&priv->udev->dev, "out of memory\n");
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 1c031309ab25..cc274fdf2627 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -912,7 +912,7 @@ int usb_serial_probe(struct usb_interface *interface,
                         goto probe_error;
                 }
                 buffer_size = max_t(int, serial->type->bulk_in_size,
-                                le16_to_cpu(endpoint->wMaxPacketSize));
+                                usb_endpoint_maxp(endpoint));
                 port->bulk_in_size = buffer_size;
                 port->bulk_in_endpointAddress = endpoint->bEndpointAddress;
                 port->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
@@ -942,7 +942,7 @@ int usb_serial_probe(struct usb_interface *interface,
                         goto probe_error;
                 buffer_size = serial->type->bulk_out_size;
                 if (!buffer_size)
-                        buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+                        buffer_size = usb_endpoint_maxp(endpoint);
                 port->bulk_out_size = buffer_size;
                 port->bulk_out_endpointAddress = endpoint->bEndpointAddress;
                 port->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
@@ -990,7 +990,7 @@ int usb_serial_probe(struct usb_interface *interface,
                                                 "No free urbs available\n");
                                 goto probe_error;
                         }
-                        buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+                        buffer_size = usb_endpoint_maxp(endpoint);
                         port->interrupt_in_endpointAddress =
                                                 endpoint->bEndpointAddress;
                         port->interrupt_in_buffer = kmalloc(buffer_size,
@@ -1021,7 +1021,7 @@ int usb_serial_probe(struct usb_interface *interface,
                                                 "No free urbs available\n");
                                 goto probe_error;
                         }
-                        buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+                        buffer_size = usb_endpoint_maxp(endpoint);
                         port->interrupt_out_size = buffer_size;
                         port->interrupt_out_endpointAddress =
                                                 endpoint->bEndpointAddress;
diff --git a/drivers/usb/storage/Kconfig b/drivers/usb/storage/Kconfig
index bedc4b9f2ac4..fe2d803a6347 100644
--- a/drivers/usb/storage/Kconfig
+++ b/drivers/usb/storage/Kconfig
@@ -42,7 +42,7 @@ config USB_STORAGE_REALTEK
 
 config REALTEK_AUTOPM
         bool "Realtek Card Reader autosuspend support"
-        depends on USB_STORAGE_REALTEK && CONFIG_PM_RUNTIME
+        depends on USB_STORAGE_REALTEK && PM_RUNTIME
         default y
 
 config USB_STORAGE_DATAFAB
diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c
index 6fd13068481b..0ce5f79197e7 100644
--- a/drivers/usb/storage/realtek_cr.c
+++ b/drivers/usb/storage/realtek_cr.c
@@ -292,6 +292,52 @@ static int rts51x_bulk_transport(struct us_data *us, u8 lun,
         return USB_STOR_TRANSPORT_ERROR;
 }
 
+static int rts51x_bulk_transport_special(struct us_data *us, u8 lun,
+                                 u8 *cmd, int cmd_len, u8 *buf, int buf_len,
+                                 enum dma_data_direction dir, int *act_len)
+{
+        struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
+        struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *) us->iobuf;
+        int result;
+        unsigned int cswlen;
+        unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
+
+        /* set up the command wrapper */
+        bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
+        bcb->DataTransferLength = cpu_to_le32(buf_len);
+        bcb->Flags = (dir == DMA_FROM_DEVICE) ? 1 << 7 : 0;
+        bcb->Tag = ++us->tag;
+        bcb->Lun = lun;
+        bcb->Length = cmd_len;
+
+        /* copy the command payload */
+        memset(bcb->CDB, 0, sizeof(bcb->CDB));
+        memcpy(bcb->CDB, cmd, bcb->Length);
+
+        /* send it to out endpoint */
+        result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
+                                bcb, cbwlen, NULL);
+        if (result != USB_STOR_XFER_GOOD)
+                return USB_STOR_TRANSPORT_ERROR;
+
+        /* DATA STAGE */
+        /* send/receive data payload, if there is any */
+
+        if (buf && buf_len) {
+                unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
+                                us->recv_bulk_pipe : us->send_bulk_pipe;
+                result = usb_stor_bulk_transfer_buf(us, pipe,
+                                buf, buf_len, NULL);
+                if (result == USB_STOR_XFER_ERROR)
+                        return USB_STOR_TRANSPORT_ERROR;
+        }
+
+        /* get CSW for device status */
+        result = usb_bulk_msg(us->pusb_dev, us->recv_bulk_pipe, bcs,
+                        US_BULK_CS_WRAP_LEN, &cswlen, 250);
+        return result;
+}
+
 /* Determine what the maximum LUN supported is */
 static int rts51x_get_max_lun(struct us_data *us)
 {
@@ -319,6 +365,11 @@ static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
 {
         int retval;
         u8 cmnd[12] = { 0 };
+        u8 *buf;
+
+        buf = kmalloc(len, GFP_NOIO);
+        if (buf == NULL)
+                return USB_STOR_TRANSPORT_ERROR;
 
         US_DEBUGP("%s, addr = 0x%x, len = %d\n", __func__, addr, len);
 
@@ -330,10 +381,14 @@ static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
         cmnd[5] = (u8) len;
 
         retval = rts51x_bulk_transport(us, 0, cmnd, 12,
-                                       data, len, DMA_FROM_DEVICE, NULL);
-        if (retval != USB_STOR_TRANSPORT_GOOD)
+                                       buf, len, DMA_FROM_DEVICE, NULL);
+        if (retval != USB_STOR_TRANSPORT_GOOD) {
+                kfree(buf);
                 return -EIO;
+        }
 
+        memcpy(data, buf, len);
+        kfree(buf);
         return 0;
 }
 
@@ -341,6 +396,12 @@ static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
 {
         int retval;
         u8 cmnd[12] = { 0 };
+        u8 *buf;
+
+        buf = kmalloc(len, GFP_NOIO);
+        if (buf == NULL)
+                return USB_STOR_TRANSPORT_ERROR;
+        memcpy(buf, data, len);
 
         US_DEBUGP("%s, addr = 0x%x, len = %d\n", __func__, addr, len);
 
@@ -352,7 +413,8 @@ static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
         cmnd[5] = (u8) len;
 
         retval = rts51x_bulk_transport(us, 0, cmnd, 12,
-                                       data, len, DMA_TO_DEVICE, NULL);
+                                       buf, len, DMA_TO_DEVICE, NULL);
+        kfree(buf);
         if (retval != USB_STOR_TRANSPORT_GOOD)
                 return -EIO;
 
@@ -364,6 +426,11 @@ static int rts51x_read_status(struct us_data *us,
 {
         int retval;
         u8 cmnd[12] = { 0 };
+        u8 *buf;
+
+        buf = kmalloc(len, GFP_NOIO);
+        if (buf == NULL)
+                return USB_STOR_TRANSPORT_ERROR;
 
         US_DEBUGP("%s, lun = %d\n", __func__, lun);
 
@@ -371,10 +438,14 @@ static int rts51x_read_status(struct us_data *us,
         cmnd[1] = 0x09;
 
         retval = rts51x_bulk_transport(us, lun, cmnd, 12,
-                                       status, len, DMA_FROM_DEVICE, actlen);
-        if (retval != USB_STOR_TRANSPORT_GOOD)
+                                       buf, len, DMA_FROM_DEVICE, actlen);
+        if (retval != USB_STOR_TRANSPORT_GOOD) {
+                kfree(buf);
                 return -EIO;
+        }
 
+        memcpy(status, buf, len);
+        kfree(buf);
         return 0;
 }
 
@@ -433,6 +504,29 @@ static int enable_oscillator(struct us_data *us)
         return 0;
 }
 
+static int __do_config_autodelink(struct us_data *us, u8 *data, u16 len)
+{
+        int retval;
+        u16 addr = 0xFE47;
+        u8 cmnd[12] = {0};
+
+        US_DEBUGP("%s, addr = 0x%x, len = %d\n", __FUNCTION__, addr, len);
+
+        cmnd[0] = 0xF0;
+        cmnd[1] = 0x0E;
+        cmnd[2] = (u8)(addr >> 8);
+        cmnd[3] = (u8)addr;
+        cmnd[4] = (u8)(len >> 8);
+        cmnd[5] = (u8)len;
+
+        retval = rts51x_bulk_transport_special(us, 0, cmnd, 12, data, len, DMA_TO_DEVICE, NULL);
+        if (retval != USB_STOR_TRANSPORT_GOOD) {
+                return -EIO;
+        }
+
+        return 0;
+}
+
 static int do_config_autodelink(struct us_data *us, int enable, int force)
 {
         int retval;
@@ -453,7 +547,8 @@ static int do_config_autodelink(struct us_data *us, int enable, int force)
 
         US_DEBUGP("In %s,set 0xfe47 to 0x%x\n", __func__, value);
 
-        retval = rts51x_write_mem(us, 0xFE47, &value, 1);
+        /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
+        retval = __do_config_autodelink(us, &value, 1);
         if (retval < 0)
                 return -EIO;
 
@@ -485,7 +580,8 @@ static int config_autodelink_after_power_on(struct us_data *us)
 
                 SET_BIT(value, 7);
 
-                retval = rts51x_write_mem(us, 0xFE47, &value, 1);
+                /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
+                retval = __do_config_autodelink(us, &value, 1);
                 if (retval < 0)
                         return -EIO;
 
@@ -506,7 +602,8 @@ static int config_autodelink_after_power_on(struct us_data *us)
                         CLR_BIT(value, 7);
                 }
 
-                retval = rts51x_write_mem(us, 0xFE47, &value, 1);
+                /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
+                retval = __do_config_autodelink(us, &value, 1);
                 if (retval < 0)
                         return -EIO;
 
@@ -583,7 +680,8 @@ static int config_autodelink_before_power_down(struct us_data *us)
                         if (CHECK_ID(chip, 0x0138, 0x3882))
                                 SET_BIT(value, 2);
 
-                        retval = rts51x_write_mem(us, 0xFE47, &value, 1);
+                        /* retval = rts51x_write_mem(us, 0xFE47, &value, 1); */
+                        retval = __do_config_autodelink(us, &value, 1);
                         if (retval < 0)
                                 return -EIO;
                 }
diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index e8ae21b2d387..ff32390d61e5 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -691,6 +691,9 @@ void usb_stor_invoke_transport(struct scsi_cmnd *srb, struct us_data *us)
                 int temp_result;
                 struct scsi_eh_save ses;
                 int sense_size = US_SENSE_SIZE;
+                struct scsi_sense_hdr sshdr;
+                const u8 *scdd;
+                u8 fm_ili;
 
                 /* device supports and needs bigger sense buffer */
                 if (us->fflags & US_FL_SANE_SENSE)
@@ -774,32 +777,30 @@ Retry_Sense:
                         srb->sense_buffer[7] = (US_SENSE_SIZE - 8);
                 }
 
+                scsi_normalize_sense(srb->sense_buffer, SCSI_SENSE_BUFFERSIZE,
+                                     &sshdr);
+
                 US_DEBUGP("-- Result from auto-sense is %d\n", temp_result);
                 US_DEBUGP("-- code: 0x%x, key: 0x%x, ASC: 0x%x, ASCQ: 0x%x\n",
-                          srb->sense_buffer[0],
-                          srb->sense_buffer[2] & 0xf,
-                          srb->sense_buffer[12], 
-                          srb->sense_buffer[13]);
+                          sshdr.response_code, sshdr.sense_key,
+                          sshdr.asc, sshdr.ascq);
 #ifdef CONFIG_USB_STORAGE_DEBUG
-                usb_stor_show_sense(
-                          srb->sense_buffer[2] & 0xf,
-                          srb->sense_buffer[12], 
-                          srb->sense_buffer[13]);
+                usb_stor_show_sense(sshdr.sense_key, sshdr.asc, sshdr.ascq);
 #endif
 
                 /* set the result so the higher layers expect this data */
                 srb->result = SAM_STAT_CHECK_CONDITION;
 
+                scdd = scsi_sense_desc_find(srb->sense_buffer,
+                                            SCSI_SENSE_BUFFERSIZE, 4);
+                fm_ili = (scdd ? scdd[3] : srb->sense_buffer[2]) & 0xA0;
+
                 /* We often get empty sense data.  This could indicate that
                  * everything worked or that there was an unspecified
                  * problem.  We have to decide which.
                  */
-                if (    /* Filemark 0, ignore EOM, ILI 0, no sense */
-                                (srb->sense_buffer[2] & 0xaf) == 0 &&
-                        /* No ASC or ASCQ */
-                                srb->sense_buffer[12] == 0 &&
-                                srb->sense_buffer[13] == 0) {
-
+                if (sshdr.sense_key == 0 && sshdr.asc == 0 && sshdr.ascq == 0 &&
+                    fm_ili == 0) {
                         /* If things are really okay, then let's show that.
                          * Zero out the sense buffer so the higher layers
                          * won't realize we did an unsolicited auto-sense.
@@ -814,7 +815,10 @@ Retry_Sense:
                          */
                         } else {
                                 srb->result = DID_ERROR << 16;
-                                srb->sense_buffer[2] = HARDWARE_ERROR;
+                                if ((sshdr.response_code & 0x72) == 0x72)
+                                        srb->sense_buffer[1] = HARDWARE_ERROR;
+                                else
+                                        srb->sense_buffer[2] = HARDWARE_ERROR;
                         }
                 }
         }
diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index 0ca095820f3e..c325e69415a1 100644
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -831,12 +831,22 @@ static int usb_stor_scan_thread(void * __us)
 
         dev_dbg(dev, "device found\n");
 
-        set_freezable();
-        /* Wait for the timeout to expire or for a disconnect */
+        set_freezable_with_signal();
+        /*
+         * Wait for the timeout to expire or for a disconnect
+         *
+         * We can't freeze in this thread or we risk causing khubd to
+         * fail to freeze, but we can't be non-freezable either. Nor can
+         * khubd freeze while waiting for scanning to complete as it may
+         * hold the device lock, causing a hang when suspending devices.
+         * So we request a fake signal when freezing and use
+         * interruptible sleep to kick us out of our wait early when
+         * freezing happens.
+         */
         if (delay_use > 0) {
                 dev_dbg(dev, "waiting for device to settle "
                                 "before scanning\n");
-                wait_event_freezable_timeout(us->delay_wait,
+                wait_event_interruptible_timeout(us->delay_wait,
                                 test_bit(US_FLIDX_DONT_SCAN, &us->dflags),
                                 delay_use * HZ);
         }
diff --git a/drivers/usb/usb-common.c b/drivers/usb/usb-common.c
new file mode 100644
index 000000000000..d29503e954ab
--- /dev/null
+++ b/drivers/usb/usb-common.c
@@ -0,0 +1,35 @@
+/*
+ * Provides code common for host and device side USB.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2.
+ *
+ * If either host side (ie. CONFIG_USB=y) or device side USB stack
+ * (ie. CONFIG_USB_GADGET=y) is compiled in the kernel, this module is
+ * compiled-in as well.  Otherwise, if either of the two stacks is
+ * compiled as module, this file is compiled as module as well.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/usb/ch9.h>
+
+const char *usb_speed_string(enum usb_device_speed speed)
+{
+        static const char *const names[] = {
+                [USB_SPEED_UNKNOWN] = "UNKNOWN",
+                [USB_SPEED_LOW] = "low-speed",
+                [USB_SPEED_FULL] = "full-speed",
+                [USB_SPEED_HIGH] = "high-speed",
+                [USB_SPEED_WIRELESS] = "wireless",
+                [USB_SPEED_SUPER] = "super-speed",
+        };
+
+        if (speed < 0 || speed >= ARRAY_SIZE(names))
+                speed = USB_SPEED_UNKNOWN;
+        return names[speed];
+}
+EXPORT_SYMBOL_GPL(usb_speed_string);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c
index e24ce3123071..32d6fc953904 100644
--- a/drivers/usb/usb-skeleton.c
+++ b/drivers/usb/usb-skeleton.c
@@ -555,7 +555,7 @@ static int skel_probe(struct usb_interface *interface,
                 if (!dev->bulk_in_endpointAddr &&
                     usb_endpoint_is_bulk_in(endpoint)) {
                         /* we found a bulk in endpoint */
-                        buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+                        buffer_size = usb_endpoint_maxp(endpoint);
                         dev->bulk_in_size = buffer_size;
                         dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
                         dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
diff --git a/drivers/usb/wusbcore/wa-hc.c b/drivers/usb/wusbcore/wa-hc.c
index 59a748a0e5da..0d1863c9edde 100644
--- a/drivers/usb/wusbcore/wa-hc.c
+++ b/drivers/usb/wusbcore/wa-hc.c
@@ -43,7 +43,7 @@ int wa_create(struct wahc *wa, struct usb_interface *iface)
         /* Fill up Data Transfer EP pointers */
         wa->dti_epd = &iface->cur_altsetting->endpoint[1].desc;
         wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc;
-        wa->xfer_result_size = le16_to_cpu(wa->dti_epd->wMaxPacketSize);
+        wa->xfer_result_size = usb_endpoint_maxp(wa->dti_epd);
         wa->xfer_result = kmalloc(wa->xfer_result_size, GFP_KERNEL);
         if (wa->xfer_result == NULL)
                 goto error_xfer_result_alloc;