1 files changed, 165 insertions, 238 deletions

diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index a460e8c204f4..b26c7d68cc06 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -36,9 +36,9 @@
 #include <linux/dma-mapping.h>
 #include <linux/clk.h>
 #include <linux/prefetch.h>
+#include <linux/io.h>
 
 #include <asm/byteorder.h>
-#include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/unaligned.h>
 #include <asm/mach-types.h>
@@ -59,11 +59,6 @@
 #define DRIVER_DESC     "OMAP UDC driver"
 #define DRIVER_VERSION  "4 October 2004"
 
-#define DMA_ADDR_INVALID        (~(dma_addr_t)0)
-
-#define OMAP2_DMA_CH(ch)        (((ch) - 1) << 1)
-#define OMAP24XX_DMA(name, ch)  (OMAP24XX_DMA_##name + OMAP2_DMA_CH(ch))
-
 /*
  * The OMAP UDC needs _very_ early endpoint setup:  before enabling the
  * D+ pullup to allow enumeration.  That's too early for the gadget
@@ -87,14 +82,14 @@
 #ifdef  USE_ISO
 static unsigned fifo_mode = 3;
 #else
-static unsigned fifo_mode = 0;
+static unsigned fifo_mode;
 #endif
 
 /* "modprobe omap_udc fifo_mode=42", or else as a kernel
  * boot parameter "omap_udc:fifo_mode=42"
  */
-module_param (fifo_mode, uint, 0);
-MODULE_PARM_DESC (fifo_mode, "endpoint configuration");
+module_param(fifo_mode, uint, 0);
+MODULE_PARM_DESC(fifo_mode, "endpoint configuration");
 
 #ifdef  USE_DMA
 static bool use_dma = 1;
@@ -102,8 +97,8 @@ static bool use_dma = 1;
 /* "modprobe omap_udc use_dma=y", or else as a kernel
  * boot parameter "omap_udc:use_dma=y"
  */
-module_param (use_dma, bool, 0);
-MODULE_PARM_DESC (use_dma, "enable/disable DMA");
+module_param(use_dma, bool, 0);
+MODULE_PARM_DESC(use_dma, "enable/disable DMA");
 #else   /* !USE_DMA */
 
 /* save a bit of code */
@@ -111,8 +106,8 @@ MODULE_PARM_DESC (use_dma, "enable/disable DMA");
 #endif  /* !USE_DMA */
 
 
-static const char driver_name [] = "omap_udc";
-static const char driver_desc [] = DRIVER_DESC;
+static const char driver_name[] = "omap_udc";
+static const char driver_desc[] = DRIVER_DESC;
 
 /*-------------------------------------------------------------------------*/
 
@@ -250,7 +245,7 @@ static int omap_ep_disable(struct usb_ep *_ep)
 
         spin_lock_irqsave(&ep->udc->lock, flags);
         ep->ep.desc = NULL;
-        nuke (ep, -ESHUTDOWN);
+        nuke(ep, -ESHUTDOWN);
         ep->ep.maxpacket = ep->maxpacket;
         ep->has_dma = 0;
         omap_writew(UDC_SET_HALT, UDC_CTRL);
@@ -271,10 +266,11 @@ omap_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
         struct omap_req *req;
 
         req = kzalloc(sizeof(*req), gfp_flags);
-        if (req) {
-                req->req.dma = DMA_ADDR_INVALID;
-                INIT_LIST_HEAD (&req->queue);
-        }
+        if (!req)
+                return NULL;
+
+        INIT_LIST_HEAD(&req->queue);
+
         return &req->req;
 }
 
@@ -283,8 +279,7 @@ omap_free_request(struct usb_ep *ep, struct usb_request *_req)
 {
         struct omap_req *req = container_of(_req, struct omap_req, req);
 
-        if (_req)
-                kfree (req);
+        kfree(req);
 }
 
 /*-------------------------------------------------------------------------*/
@@ -292,6 +287,7 @@ omap_free_request(struct usb_ep *ep, struct usb_request *_req)
 static void
 done(struct omap_ep *ep, struct omap_req *req, int status)
 {
+        struct omap_udc         *udc = ep->udc;
         unsigned                stopped = ep->stopped;
 
         list_del_init(&req->queue);
@@ -301,22 +297,9 @@ done(struct omap_ep *ep, struct omap_req *req, int status)
         else
                 status = req->req.status;
 
-        if (use_dma && ep->has_dma) {
-                if (req->mapped) {
-                        dma_unmap_single(ep->udc->gadget.dev.parent,
-                                req->req.dma, req->req.length,
-                                (ep->bEndpointAddress & USB_DIR_IN)
-                                        ? DMA_TO_DEVICE
-                                        : DMA_FROM_DEVICE);
-                        req->req.dma = DMA_ADDR_INVALID;
-                        req->mapped = 0;
-                } else
-                        dma_sync_single_for_cpu(ep->udc->gadget.dev.parent,
-                                req->req.dma, req->req.length,
-                                (ep->bEndpointAddress & USB_DIR_IN)
-                                        ? DMA_TO_DEVICE
-                                        : DMA_FROM_DEVICE);
-        }
+        if (use_dma && ep->has_dma)
+                usb_gadget_unmap_request(&udc->gadget, &req->req,
+                                (ep->bEndpointAddress & USB_DIR_IN));
 
 #ifndef USB_TRACE
         if (status && status != -ESHUTDOWN)
@@ -364,10 +347,10 @@ write_packet(u8 *buf, struct omap_req *req, unsigned max)
         return len;
 }
 
-// FIXME change r/w fifo calling convention
+/* FIXME change r/w fifo calling convention */
 
 
-// return:  0 = still running, 1 = completed, negative = errno
+/* return:  0 = still running, 1 = completed, negative = errno */
 static int write_fifo(struct omap_ep *ep, struct omap_req *req)
 {
         u8              *buf;
@@ -429,7 +412,7 @@ read_packet(u8 *buf, struct omap_req *req, unsigned avail)
         return len;
 }
 
-// return:  0 = still running, 1 = queue empty, negative = errno
+/* return:  0 = still running, 1 = queue empty, negative = errno */
 static int read_fifo(struct omap_ep *ep, struct omap_req *req)
 {
         u8              *buf;
@@ -536,12 +519,8 @@ static void next_in_dma(struct omap_ep *ep, struct omap_req *req)
                                 : OMAP_DMA_SYNC_ELEMENT;
         int             dma_trigger = 0;
 
-        if (cpu_is_omap24xx())
-                dma_trigger = OMAP24XX_DMA(USB_W2FC_TX0, ep->dma_channel);
-
         /* measure length in either bytes or packets */
         if ((cpu_is_omap16xx() && length <= UDC_TXN_TSC)
-                        || (cpu_is_omap24xx() && length < ep->maxpacket)
                         || (cpu_is_omap15xx() && length < ep->maxpacket)) {
                 txdma_ctrl = UDC_TXN_EOT | length;
                 omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S8,
@@ -600,28 +579,14 @@ static void next_out_dma(struct omap_ep *ep, struct omap_req *req)
         int dma_trigger = 0;
         u16 w;
 
-        if (cpu_is_omap24xx())
-                dma_trigger = OMAP24XX_DMA(USB_W2FC_RX0, ep->dma_channel);
-
-        /* NOTE:  we filtered out "short reads" before, so we know
-         * the buffer has only whole numbers of packets.
-         * except MODE SELECT(6) sent the 24 bytes data in OMAP24XX DMA mode
-         */
-        if (cpu_is_omap24xx() && packets < ep->maxpacket) {
-                omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S8,
-                                packets, 1, OMAP_DMA_SYNC_ELEMENT,
-                                dma_trigger, 0);
-                req->dma_bytes = packets;
-        } else {
-                /* set up this DMA transfer, enable the fifo, start */
-                packets /= ep->ep.maxpacket;
-                packets = min(packets, (unsigned)UDC_RXN_TC + 1);
-                req->dma_bytes = packets * ep->ep.maxpacket;
-                omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16,
-                                ep->ep.maxpacket >> 1, packets,
-                                OMAP_DMA_SYNC_ELEMENT,
-                                dma_trigger, 0);
-        }
+        /* set up this DMA transfer, enable the fifo, start */
+        packets /= ep->ep.maxpacket;
+        packets = min(packets, (unsigned)UDC_RXN_TC + 1);
+        req->dma_bytes = packets * ep->ep.maxpacket;
+        omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16,
+                        ep->ep.maxpacket >> 1, packets,
+                        OMAP_DMA_SYNC_ELEMENT,
+                        dma_trigger, 0);
         omap_set_dma_dest_params(ep->lch, OMAP_DMA_PORT_EMIFF,
                 OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual,
                 0, 0);
@@ -683,7 +648,7 @@ static void dma_irq(struct omap_udc *udc, u16 irq_src)
                 }
                 omap_writew(UDC_TXN_DONE, UDC_IRQ_SRC);
 
-                if (!list_empty (&ep->queue)) {
+                if (!list_empty(&ep->queue)) {
                         req = container_of(ep->queue.next,
                                         struct omap_req, queue);
                         next_in_dma(ep, req);
@@ -702,7 +667,7 @@ static void dma_irq(struct omap_udc *udc, u16 irq_src)
                 }
                 omap_writew(UDC_RXN_EOT, UDC_IRQ_SRC);
 
-                if (!list_empty (&ep->queue)) {
+                if (!list_empty(&ep->queue)) {
                         req = container_of(ep->queue.next,
                                         struct omap_req, queue);
                         next_out_dma(ep, req);
@@ -760,10 +725,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel)
         ep->dma_channel = channel;
 
         if (is_in) {
-                if (cpu_is_omap24xx())
-                        dma_channel = OMAP24XX_DMA(USB_W2FC_TX0, channel);
-                else
-                        dma_channel = OMAP_DMA_USB_W2FC_TX0 - 1 + channel;
+                dma_channel = OMAP_DMA_USB_W2FC_TX0 - 1 + channel;
                 status = omap_request_dma(dma_channel,
                         ep->ep.name, dma_error, ep, &ep->lch);
                 if (status == 0) {
@@ -780,11 +742,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel)
                                 0, 0);
                 }
         } else {
-                if (cpu_is_omap24xx())
-                        dma_channel = OMAP24XX_DMA(USB_W2FC_RX0, channel);
-                else
-                        dma_channel = OMAP_DMA_USB_W2FC_RX0 - 1 + channel;
-
+                dma_channel = OMAP_DMA_USB_W2FC_RX0 - 1 + channel;
                 status = omap_request_dma(dma_channel,
                         ep->ep.name, dma_error, ep, &ep->lch);
                 if (status == 0) {
@@ -808,7 +766,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel)
                 omap_disable_dma_irq(ep->lch, OMAP_DMA_BLOCK_IRQ);
 
                 /* channel type P: hw synch (fifo) */
-                if (cpu_class_is_omap1() && !cpu_is_omap15xx())
+                if (!cpu_is_omap15xx())
                         omap_set_dma_channel_mode(ep->lch, OMAP_DMA_LCH_P);
         }
 
@@ -928,13 +886,11 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
 
         /* this isn't bogus, but OMAP DMA isn't the only hardware to
          * have a hard time with partial packet reads...  reject it.
-         * Except OMAP2 can handle the small packets.
          */
         if (use_dma
                         && ep->has_dma
                         && ep->bEndpointAddress != 0
                         && (ep->bEndpointAddress & USB_DIR_IN) == 0
-                        && !cpu_class_is_omap2()
                         && (req->req.length % ep->ep.maxpacket) != 0) {
                 DBG("%s, no partial packet OUT reads\n", __func__);
                 return -EMSGSIZE;
@@ -944,26 +900,9 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
         if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN)
                 return -ESHUTDOWN;
 
-        if (use_dma && ep->has_dma) {
-                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->bEndpointAddress & USB_DIR_IN)
-                                        ? DMA_TO_DEVICE
-                                        : DMA_FROM_DEVICE);
-                        req->mapped = 1;
-                } else {
-                        dma_sync_single_for_device(
-                                ep->udc->gadget.dev.parent,
-                                req->req.dma, req->req.length,
-                                (ep->bEndpointAddress & USB_DIR_IN)
-                                        ? DMA_TO_DEVICE
-                                        : DMA_FROM_DEVICE);
-                        req->mapped = 0;
-                }
-        }
+        if (use_dma && ep->has_dma)
+                usb_gadget_map_request(&udc->gadget, &req->req,
+                                (ep->bEndpointAddress & USB_DIR_IN));
 
         VDBG("%s queue req %p, len %d buf %p\n",
                 ep->ep.name, _req, _req->length, _req->buf);
@@ -984,7 +923,7 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
                 int     is_in;
 
                 if (ep->bEndpointAddress == 0) {
-                        if (!udc->ep0_pending || !list_empty (&ep->queue)) {
+                        if (!udc->ep0_pending || !list_empty(&ep->queue)) {
                                 spin_unlock_irqrestore(&udc->lock, flags);
                                 return -EL2HLT;
                         }
@@ -1011,7 +950,8 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
                                  * always an IN ... even for IN transfers,
                                  * a weird case which seem to stall OMAP.
                                  */
-                                omap_writew(UDC_EP_SEL | UDC_EP_DIR, UDC_EP_NUM);
+                                omap_writew(UDC_EP_SEL | UDC_EP_DIR,
+                                                UDC_EP_NUM);
                                 omap_writew(UDC_CLR_EP, UDC_CTRL);
                                 omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
                                 omap_writew(UDC_EP_DIR, UDC_EP_NUM);
@@ -1023,7 +963,8 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
 
                         /* non-empty DATA stage */
                         } else if (is_in) {
-                                omap_writew(UDC_EP_SEL | UDC_EP_DIR, UDC_EP_NUM);
+                                omap_writew(UDC_EP_SEL | UDC_EP_DIR,
+                                                UDC_EP_NUM);
                         } else {
                                 if (udc->ep0_setup)
                                         goto irq_wait;
@@ -1071,7 +1012,7 @@ static int omap_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
         spin_lock_irqsave(&ep->udc->lock, flags);
 
         /* make sure it's actually queued on this endpoint */
-        list_for_each_entry (req, &ep->queue, queue) {
+        list_for_each_entry(req, &ep->queue, queue) {
                 if (&req->req == _req)
                         break;
         }
@@ -1178,8 +1119,8 @@ static struct usb_ep_ops omap_ep_ops = {
         .dequeue        = omap_ep_dequeue,
 
         .set_halt       = omap_ep_set_halt,
-        // fifo_status ... report bytes in fifo
-        // fifo_flush ... flush fifo
+        /* fifo_status ... report bytes in fifo */
+        /* fifo_flush ... flush fifo */
 };
 
 /*-------------------------------------------------------------------------*/
@@ -1409,7 +1350,7 @@ static void udc_quiesce(struct omap_udc *udc)
 
         udc->gadget.speed = USB_SPEED_UNKNOWN;
         nuke(&udc->ep[0], -ESHUTDOWN);
-        list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list)
+        list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list)
                 nuke(ep, -ESHUTDOWN);
 }
 
@@ -1525,7 +1466,8 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src)
                                 /* read next OUT packet of request, maybe
                                  * reactiviting the fifo; stall on errors.
                                  */
-                                if (!req || (stat = read_fifo(ep0, req)) < 0) {
+                                stat = read_fifo(ep0, req);
+                                if (!req || stat < 0) {
                                         omap_writew(UDC_STALL_CMD, UDC_SYSCON2);
                                         udc->ep0_pending = 0;
                                         stat = 0;
@@ -1658,7 +1600,7 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src)
                                 /* this has rude side-effects (aborts) and
                                  * can't really work if DMA-IN is active
                                  */
-                                DBG("%s host set_halt, NYET \n", ep->name);
+                                DBG("%s host set_halt, NYET\n", ep->name);
                                 goto do_stall;
                         }
                         use_ep(ep, 0);
@@ -1749,7 +1691,7 @@ delegate:
                          */
                         udc->ep0_setup = 1;
                         spin_unlock(&udc->lock);
-                        status = udc->driver->setup (&udc->gadget, &u.r);
+                        status = udc->driver->setup(&udc->gadget, &u.r);
                         spin_lock(&udc->lock);
                         udc->ep0_setup = 0;
                 }
@@ -1794,7 +1736,7 @@ static void devstate_irq(struct omap_udc *udc, u16 irq_src)
                                 VDBG("connect\n");
                                 if (!udc->transceiver)
                                         pullup_enable(udc);
-                                // if (driver->connect) call it
+                                /* if (driver->connect) call it */
                         } else if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
                                 udc->gadget.speed = USB_SPEED_UNKNOWN;
                                 if (!udc->transceiver)
@@ -1826,7 +1768,7 @@ static void devstate_irq(struct omap_udc *udc, u16 irq_src)
         }
         if (change & UDC_SUS) {
                 if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
-                        // FIXME tell isp1301 to suspend/resume (?)
+                        /* FIXME tell isp1301 to suspend/resume (?) */
                         if (devstat & UDC_SUS) {
                                 VDBG("suspend\n");
                                 update_otg(udc);
@@ -2029,7 +1971,7 @@ static irqreturn_t omap_udc_iso_irq(int irq, void *_dev)
         spin_lock_irqsave(&udc->lock, flags);
 
         /* handle all non-DMA ISO transfers */
-        list_for_each_entry (ep, &udc->iso, iso) {
+        list_for_each_entry(ep, &udc->iso, iso) {
                 u16             stat;
                 struct omap_req *req;
 
@@ -2088,15 +2030,11 @@ static irqreturn_t omap_udc_iso_irq(int irq, void *_dev)
 
 static inline int machine_without_vbus_sense(void)
 {
-        return (machine_is_omap_innovator()
+        return machine_is_omap_innovator()
                 || machine_is_omap_osk()
-                || machine_is_omap_apollon()
-#ifndef CONFIG_MACH_OMAP_H4_OTG
-                || machine_is_omap_h4()
-#endif
                 || machine_is_sx1()
-                || cpu_is_omap7xx() /* No known omap7xx boards with vbus sense */
-                );
+                /* No known omap7xx boards with vbus sense */
+                || cpu_is_omap7xx();
 }
 
 static int omap_udc_start(struct usb_gadget_driver *driver,
@@ -2110,7 +2048,7 @@ static int omap_udc_start(struct usb_gadget_driver *driver,
         if (!udc)
                 return -ENODEV;
         if (!driver
-                        // FIXME if otg, check:  driver->is_otg
+                        /* FIXME if otg, check:  driver->is_otg */
                         || driver->max_speed < USB_SPEED_FULL
                         || !bind || !driver->setup)
                 return -EINVAL;
@@ -2122,7 +2060,7 @@ static int omap_udc_start(struct usb_gadget_driver *driver,
         }
 
         /* reset state */
-        list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) {
+        list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
                 ep->irqs = 0;
                 if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC)
                         continue;
@@ -2160,7 +2098,7 @@ static int omap_udc_start(struct usb_gadget_driver *driver,
                 if (status < 0) {
                         ERR("can't bind to transceiver\n");
                         if (driver->unbind) {
-                                driver->unbind (&udc->gadget);
+                                driver->unbind(&udc->gadget);
                                 udc->gadget.dev.driver = NULL;
                                 udc->driver = NULL;
                         }
@@ -2168,9 +2106,9 @@ static int omap_udc_start(struct usb_gadget_driver *driver,
                 }
         } else {
                 if (can_pullup(udc))
-                        pullup_enable (udc);
+                        pullup_enable(udc);
                 else
-                        pullup_disable (udc);
+                        pullup_disable(udc);
         }
 
         /* boards that don't have VBUS sensing can't autogate 48MHz;
@@ -2229,7 +2167,7 @@ static int omap_udc_stop(struct usb_gadget_driver *driver)
 static const char proc_filename[] = "driver/udc";
 
 #define FOURBITS "%s%s%s%s"
-#define EIGHTBITS FOURBITS FOURBITS
+#define EIGHTBITS "%s%s%s%s%s%s%s%s"
 
 static void proc_ep_show(struct seq_file *s, struct omap_ep *ep)
 {
@@ -2251,12 +2189,21 @@ static void proc_ep_show(struct seq_file *s, struct omap_ep *ep)
                 "\n%s %s%s%sirqs %ld stat %04x " EIGHTBITS FOURBITS "%s\n",
                 ep->name, buf,
                 ep->double_buf ? "dbuf " : "",
-                ({char *s; switch(ep->ackwait){
-                case 0: s = ""; break;
-                case 1: s = "(ackw) "; break;
-                case 2: s = "(ackw2) "; break;
-                default: s = "(?) "; break;
-                } s;}),
+                ({ char *s;
+                switch (ep->ackwait) {
+                case 0:
+                        s = "";
+                        break;
+                case 1:
+                        s = "(ackw) ";
+                        break;
+                case 2:
+                        s = "(ackw2) ";
+                        break;
+                default:
+                        s = "(?) ";
+                        break;
+                } s; }),
                 ep->irqs, stat_flg,
                 (stat_flg & UDC_NO_RXPACKET) ? "no_rxpacket " : "",
                 (stat_flg & UDC_MISS_IN) ? "miss_in " : "",
@@ -2272,10 +2219,10 @@ static void proc_ep_show(struct seq_file *s, struct omap_ep *ep)
                 (stat_flg & UDC_NON_ISO_FIFO_EMPTY) ? "fifo_empty " : "",
                 (stat_flg & UDC_NON_ISO_FIFO_FULL) ? "fifo_full " : "");
 
-        if (list_empty (&ep->queue))
+        if (list_empty(&ep->queue))
                 seq_printf(s, "\t(queue empty)\n");
         else
-                list_for_each_entry (req, &ep->queue, queue) {
+                list_for_each_entry(req, &ep->queue, queue) {
                         unsigned        length = req->req.actual;
 
                         if (use_dma && buf[0]) {
@@ -2293,11 +2240,16 @@ static void proc_ep_show(struct seq_file *s, struct omap_ep *ep)
 static char *trx_mode(unsigned m, int enabled)
 {
         switch (m) {
-        case 0:         return enabled ? "*6wire" : "unused";
-        case 1:         return "4wire";
-        case 2:         return "3wire";
-        case 3:         return "6wire";
-        default:        return "unknown";
+        case 0:
+                return enabled ? "*6wire" : "unused";
+        case 1:
+                return "4wire";
+        case 2:
+                return "3wire";
+        case 3:
+                return "6wire";
+        default:
+                return "unknown";
         }
 }
 
@@ -2307,12 +2259,9 @@ static int proc_otg_show(struct seq_file *s)
         u32             trans = 0;
         char            *ctrl_name = "(UNKNOWN)";
 
-        /* XXX This needs major revision for OMAP2+ */
         tmp = omap_readl(OTG_REV);
-        if (cpu_class_is_omap1()) {
-                ctrl_name = "tranceiver_ctrl";
-                trans = omap_readw(USB_TRANSCEIVER_CTRL);
-        }
+        ctrl_name = "tranceiver_ctrl";
+        trans = omap_readw(USB_TRANSCEIVER_CTRL);
         seq_printf(s, "\nOTG rev %d.%d, %s %05x\n",
                 tmp >> 4, tmp & 0xf, ctrl_name, trans);
         tmp = omap_readw(OTG_SYSCON_1);
@@ -2332,7 +2281,7 @@ static int proc_otg_show(struct seq_file *s)
                         " b_ase_brst=%d hmc=%d\n", tmp,
                 (tmp & OTG_EN) ? " otg_en" : "",
                 (tmp & USBX_SYNCHRO) ? " synchro" : "",
-                // much more SRP stuff
+                /* much more SRP stuff */
                 (tmp & SRP_DATA) ? " srp_data" : "",
                 (tmp & SRP_VBUS) ? " srp_vbus" : "",
                 (tmp & OTG_PADEN) ? " otg_paden" : "",
@@ -2399,14 +2348,12 @@ static int proc_udc_show(struct seq_file *s, void *_)
                 HMC,
                 udc->transceiver
                         ? udc->transceiver->label
-                        : ((cpu_is_omap1710() || cpu_is_omap24xx())
+                        : (cpu_is_omap1710()
                                 ? "external" : "(none)"));
-        if (cpu_class_is_omap1()) {
-                seq_printf(s, "ULPD control %04x req %04x status %04x\n",
-                        omap_readw(ULPD_CLOCK_CTRL),
-                        omap_readw(ULPD_SOFT_REQ),
-                        omap_readw(ULPD_STATUS_REQ));
-        }
+        seq_printf(s, "ULPD control %04x req %04x status %04x\n",
+                omap_readw(ULPD_CLOCK_CTRL),
+                omap_readw(ULPD_SOFT_REQ),
+                omap_readw(ULPD_STATUS_REQ));
 
         /* OTG controller registers */
         if (!cpu_is_omap15xx())
@@ -2422,7 +2369,7 @@ static int proc_udc_show(struct seq_file *s, void *_)
                 (tmp & UDC_SELF_PWR) ? " self_pwr" : "",
                 (tmp & UDC_SOFF_DIS) ? " soff_dis" : "",
                 (tmp & UDC_PULLUP_EN) ? " PULLUP" : "");
-        // syscon2 is write-only
+        /* syscon2 is write-only */
 
         /* UDC controller registers */
         if (!(tmp & UDC_PULLUP_EN)) {
@@ -2506,7 +2453,7 @@ static int proc_udc_show(struct seq_file *s, void *_)
         if (tmp & UDC_ATT) {
                 proc_ep_show(s, &udc->ep[0]);
                 if (tmp & UDC_ADD) {
-                        list_for_each_entry (ep, &udc->gadget.ep_list,
+                        list_for_each_entry(ep, &udc->gadget.ep_list,
                                         ep.ep_list) {
                                 if (ep->ep.desc)
                                         proc_ep_show(s, ep);
@@ -2557,7 +2504,7 @@ static inline void remove_proc_file(void) {}
  * UDC_SYSCON_1.CFG_LOCK is set can now work.  We won't use that
  * capability yet though.
  */
-static unsigned __init
+static unsigned __devinit
 omap_ep_setup(char *name, u8 addr, u8 type,
                 unsigned buf, unsigned maxp, int dbuf)
 {
@@ -2575,14 +2522,29 @@ omap_ep_setup(char *name, u8 addr, u8 type,
         /* chip setup ... bit values are same for IN, OUT */
         if (type == USB_ENDPOINT_XFER_ISOC) {
                 switch (maxp) {
-                case 8:         epn_rxtx = 0 << 12; break;
-                case 16:        epn_rxtx = 1 << 12; break;
-                case 32:        epn_rxtx = 2 << 12; break;
-                case 64:        epn_rxtx = 3 << 12; break;
-                case 128:       epn_rxtx = 4 << 12; break;
-                case 256:       epn_rxtx = 5 << 12; break;
-                case 512:       epn_rxtx = 6 << 12; break;
-                default:        BUG();
+                case 8:
+                        epn_rxtx = 0 << 12;
+                        break;
+                case 16:
+                        epn_rxtx = 1 << 12;
+                        break;
+                case 32:
+                        epn_rxtx = 2 << 12;
+                        break;
+                case 64:
+                        epn_rxtx = 3 << 12;
+                        break;
+                case 128:
+                        epn_rxtx = 4 << 12;
+                        break;
+                case 256:
+                        epn_rxtx = 5 << 12;
+                        break;
+                case 512:
+                        epn_rxtx = 6 << 12;
+                        break;
+                default:
+                        BUG();
                 }
                 epn_rxtx |= UDC_EPN_RX_ISO;
                 dbuf = 1;
@@ -2591,15 +2553,24 @@ omap_ep_setup(char *name, u8 addr, u8 type,
                  * and ignored for PIO-IN on newer chips
                  * (for more reliable behavior)
                  */
-                if (!use_dma || cpu_is_omap15xx() || cpu_is_omap24xx())
+                if (!use_dma || cpu_is_omap15xx())
                         dbuf = 0;
 
                 switch (maxp) {
-                case 8:         epn_rxtx = 0 << 12; break;
-                case 16:        epn_rxtx = 1 << 12; break;
-                case 32:        epn_rxtx = 2 << 12; break;
-                case 64:        epn_rxtx = 3 << 12; break;
-                default:        BUG();
+                case 8:
+                        epn_rxtx = 0 << 12;
+                        break;
+                case 16:
+                        epn_rxtx = 1 << 12;
+                        break;
+                case 32:
+                        epn_rxtx = 2 << 12;
+                        break;
+                case 64:
+                        epn_rxtx = 3 << 12;
+                        break;
+                default:
+                        BUG();
                 }
                 if (dbuf && addr)
                         epn_rxtx |= UDC_EPN_RX_DB;
@@ -2639,7 +2610,7 @@ omap_ep_setup(char *name, u8 addr, u8 type,
         ep->ep.name = ep->name;
         ep->ep.ops = &omap_ep_ops;
         ep->ep.maxpacket = ep->maxpacket = maxp;
-        list_add_tail (&ep->ep.ep_list, &udc->gadget.ep_list);
+        list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
 
         return buf;
 }
@@ -2647,11 +2618,11 @@ omap_ep_setup(char *name, u8 addr, u8 type,
 static void omap_udc_release(struct device *dev)
 {
         complete(udc->done);
-        kfree (udc);
+        kfree(udc);
         udc = NULL;
 }
 
-static int __init
+static int __devinit
 omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv)
 {
         unsigned        tmp, buf;
@@ -2665,13 +2636,13 @@ omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv)
         omap_writew(0, UDC_TXDMA_CFG);
 
         /* UDC_PULLUP_EN gates the chip clock */
-        // OTG_SYSCON_1 |= DEV_IDLE_EN;
+        /* OTG_SYSCON_1 |= DEV_IDLE_EN; */
 
         udc = kzalloc(sizeof(*udc), GFP_KERNEL);
         if (!udc)
                 return -ENOMEM;
 
-        spin_lock_init (&udc->lock);
+        spin_lock_init(&udc->lock);
 
         udc->gadget.ops = &omap_gadget_ops;
         udc->gadget.ep0 = &udc->ep[0].ep;
@@ -2701,13 +2672,13 @@ omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv)
                 omap_writew(0, UDC_EP_TX(tmp));
         }
 
-#define OMAP_BULK_EP(name,addr) \
+#define OMAP_BULK_EP(name, addr) \
         buf = omap_ep_setup(name "-bulk", addr, \
                         USB_ENDPOINT_XFER_BULK, buf, 64, 1);
-#define OMAP_INT_EP(name,addr, maxp) \
+#define OMAP_INT_EP(name, addr, maxp) \
         buf = omap_ep_setup(name "-int", addr, \
                         USB_ENDPOINT_XFER_INT, buf, maxp, 0);
-#define OMAP_ISO_EP(name,addr, maxp) \
+#define OMAP_ISO_EP(name, addr, maxp) \
         buf = omap_ep_setup(name "-iso", addr, \
                         USB_ENDPOINT_XFER_ISOC, buf, maxp, 1);
 
@@ -2788,15 +2759,18 @@ omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv)
         return 0;
 }
 
-static int __init omap_udc_probe(struct platform_device *pdev)
+static int __devinit omap_udc_probe(struct platform_device *pdev)
 {
         int                     status = -ENODEV;
         int                     hmc;
         struct usb_phy          *xceiv = NULL;
         const char              *type = NULL;
         struct omap_usb_config  *config = pdev->dev.platform_data;
-        struct clk              *dc_clk;
-        struct clk              *hhc_clk;
+        struct clk              *dc_clk = NULL;
+        struct clk              *hhc_clk = NULL;
+
+        if (cpu_is_omap7xx())
+                use_dma = 0;
 
         /* NOTE:  "knows" the order of the resources! */
         if (!request_mem_region(pdev->resource[0].start,
@@ -2816,16 +2790,6 @@ static int __init omap_udc_probe(struct platform_device *pdev)
                 udelay(100);
         }
 
-        if (cpu_is_omap24xx()) {
-                dc_clk = clk_get(&pdev->dev, "usb_fck");
-                hhc_clk = clk_get(&pdev->dev, "usb_l4_ick");
-                BUG_ON(IS_ERR(dc_clk) || IS_ERR(hhc_clk));
-                /* can't use omap_udc_enable_clock yet */
-                clk_enable(dc_clk);
-                clk_enable(hhc_clk);
-                udelay(100);
-        }
-
         if (cpu_is_omap7xx()) {
                 dc_clk = clk_get(&pdev->dev, "usb_dc_ck");
                 hhc_clk = clk_get(&pdev->dev, "l3_ocpi_ck");
@@ -2875,14 +2839,6 @@ static int __init omap_udc_probe(struct platform_device *pdev)
 
                 hmc = HMC_1610;
 
-                if (cpu_is_omap24xx()) {
-                        /* this could be transceiverless in one of the
-                         * "we don't need to know" modes.
-                         */
-                        type = "external";
-                        goto known;
-                }
-
                 switch (hmc) {
                 case 0:                 /* POWERUP DEFAULT == 0 */
                 case 4:
@@ -2921,16 +2877,16 @@ bad_on_1710:
                         goto cleanup0;
                 }
         }
-known:
+
         INFO("hmc mode %d, %s transceiver\n", hmc, type);
 
         /* a "gadget" abstracts/virtualizes the controller */
         status = omap_udc_setup(pdev, xceiv);
-        if (status) {
+        if (status)
                 goto cleanup0;
-        }
+
         xceiv = NULL;
-        // "udc" is now valid
+        /* "udc" is now valid */
         pullup_disable(udc);
 #if     defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
         udc->gadget.is_otg = (config->otg != 0);
@@ -2944,7 +2900,7 @@ known:
 
         /* USB general purpose IRQ:  ep0, state changes, dma, etc */
         status = request_irq(pdev->resource[1].start, omap_udc_irq,
-                        IRQF_SAMPLE_RANDOM, driver_name, udc);
+                        0, driver_name, udc);
         if (status != 0) {
                 ERR("can't get irq %d, err %d\n",
                         (int) pdev->resource[1].start, status);
@@ -2953,7 +2909,7 @@ known:
 
         /* USB "non-iso" IRQ (PIO for all but ep0) */
         status = request_irq(pdev->resource[2].start, omap_udc_pio_irq,
-                        IRQF_SAMPLE_RANDOM, "omap_udc pio", udc);
+                        0, "omap_udc pio", udc);
         if (status != 0) {
                 ERR("can't get irq %d, err %d\n",
                         (int) pdev->resource[2].start, status);
@@ -2975,16 +2931,6 @@ known:
                 clk_disable(dc_clk);
         }
 
-        if (cpu_is_omap24xx()) {
-                udc->dc_clk = dc_clk;
-                udc->hhc_clk = hhc_clk;
-                /* FIXME OMAP2 don't release hhc & dc clock */
-#if 0
-                clk_disable(hhc_clk);
-                clk_disable(dc_clk);
-#endif
-        }
-
         create_proc_file();
         status = device_add(&udc->gadget.dev);
         if (status)
@@ -3006,14 +2952,14 @@ cleanup2:
         free_irq(pdev->resource[1].start, udc);
 
 cleanup1:
-        kfree (udc);
+        kfree(udc);
         udc = NULL;
 
 cleanup0:
         if (xceiv)
                 usb_put_transceiver(xceiv);
 
-        if (cpu_is_omap16xx() || cpu_is_omap24xx() || cpu_is_omap7xx()) {
+        if (cpu_is_omap16xx() || cpu_is_omap7xx()) {
                 clk_disable(hhc_clk);
                 clk_disable(dc_clk);
                 clk_put(hhc_clk);
@@ -3026,7 +2972,7 @@ cleanup0:
         return status;
 }
 
-static int __exit omap_udc_remove(struct platform_device *pdev)
+static int __devexit omap_udc_remove(struct platform_device *pdev)
 {
         DECLARE_COMPLETION_ONSTACK(done);
 
@@ -3111,7 +3057,8 @@ static int omap_udc_resume(struct platform_device *dev)
 /*-------------------------------------------------------------------------*/
 
 static struct platform_driver udc_driver = {
-        .remove         = __exit_p(omap_udc_remove),
+        .probe          = omap_udc_probe,
+        .remove         = __devexit_p(omap_udc_remove),
         .suspend        = omap_udc_suspend,
         .resume         = omap_udc_resume,
         .driver         = {
@@ -3120,27 +3067,7 @@ static struct platform_driver udc_driver = {
         },
 };
 
-static int __init udc_init(void)
-{
-        /* Disable DMA for omap7xx -- it doesn't work right. */
-        if (cpu_is_omap7xx())
-                use_dma = 0;
-
-        INFO("%s, version: " DRIVER_VERSION
-#ifdef  USE_ISO
-                " (iso)"
-#endif
-                "%s\n", driver_desc,
-                use_dma ?  " (dma)" : "");
-        return platform_driver_probe(&udc_driver, omap_udc_probe);
-}
-module_init(udc_init);
-
-static void __exit udc_exit(void)
-{
-        platform_driver_unregister(&udc_driver);
-}
-module_exit(udc_exit);
+module_platform_driver(udc_driver);
 
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL");