Merge tag 'usb-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB updates from Greg KH:
 "Here is the big USB patchset for 4.4-rc1.

  As usual, most of the changes are in the gadget subsystem, and we
  removed a host controller for a device that is no longer in existance,
  and probably never was even made public.  There is also other minor
  driver updates and new device ids, full details in the changelog.

  All of these have been in linux-next for a while"

* tag 'usb-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (233 commits)
  USB: core: Codestyle fix in urb.c
  usb: misc: usb3503: Use i2c_add_driver helper macro
  usb: host: lpc32xx: don't unregister phy device
  usb: host: lpc32xx: balance clk enable/disable on removal
  usb: host: lpc32xx: fix warnings caused by enabling unprepared clock
  uwb: drp: Use setup_timer
  uwb: neh: Use setup_timer
  uwb: rsv: Use setup_timer
  USB: qcserial: add Sierra Wireless MC74xx/EM74xx
  usb: chipidea: otg: don't wait vbus drops below BSV when starts host
  chipidea: ci_hdrc_pci: use PCI_VDEVICE() instead of PCI_DEVICE()
  doc: dt-binding: ci-hdrc-usb2: split vendor specific properties
  usb: chipidea: imx: add imx6ul usb support
  doc: dt-binding: ci-hdrc-usb2: improve property description
  usb: chipidea: imx: add usb support for imx7d
  Doc: usb: ci-hdrc-usb2: Add phy-clkgate-delay-us entry
  usb: chipidea: Add support for 'phy-clkgate-delay-us' property
  usb: chipidea: Use extcon framework for VBUS and ID detect
  usb: gadget: net2280: restore ep_cfg after defect7374 workaround
  usb: dwc2: host: Fix use after free w/ simultaneous irqs
  ...

8 files changed, 94 insertions, 27 deletions

diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index 27603bcbb9b9..6cc96bb12ddc 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h
@@ -32,9 +32,9 @@
 #ifndef __LINUX_USB_CH9_H
 #define __LINUX_USB_CH9_H
 
+#include <linux/device.h>
 #include <uapi/linux/usb/ch9.h>
 
-
 /**
  * usb_speed_string() - Returns human readable-name of the speed.
  * @speed: The speed to return human-readable name for.  If it's not
@@ -43,6 +43,15 @@
  */
 extern const char *usb_speed_string(enum usb_device_speed speed);
 
+/**
+ * usb_get_maximum_speed - Get maximum requested speed for a given USB
+ * controller.
+ * @dev: Pointer to the given USB controller device
+ *
+ * The function gets the maximum speed string from property "maximum-speed",
+ * and returns the corresponding enum usb_device_speed.
+ */
+extern enum usb_device_speed usb_get_maximum_speed(struct device *dev);
 
 /**
  * usb_state_string - Returns human readable name for the state.
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index a41833cd184c..5dd75fa47dd8 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -5,9 +5,28 @@
 #ifndef __LINUX_USB_CHIPIDEA_H
 #define __LINUX_USB_CHIPIDEA_H
 
+#include <linux/extcon.h>
 #include <linux/usb/otg.h>
 
 struct ci_hdrc;
+
+/**
+ * struct ci_hdrc_cable - structure for external connector cable state tracking
+ * @state: current state of the line
+ * @changed: set to true when extcon event happen
+ * @edev: device which generate events
+ * @ci: driver state of the chipidea device
+ * @nb: hold event notification callback
+ * @conn: used for notification registration
+ */
+struct ci_hdrc_cable {
+        bool                            state;
+        bool                            changed;
+        struct extcon_dev               *edev;
+        struct ci_hdrc                  *ci;
+        struct notifier_block           nb;
+};
+
 struct ci_hdrc_platform_data {
         const char      *name;
         /* offset of the capability registers */
@@ -48,6 +67,11 @@ struct ci_hdrc_platform_data {
         u32                     ahb_burst_config;
         u32                     tx_burst_size;
         u32                     rx_burst_size;
+
+        /* VBUS and ID signal state tracking, using extcon framework */
+        struct ci_hdrc_cable            vbus_extcon;
+        struct ci_hdrc_cable            id_extcon;
+        u32                     phy_clkgate_delay_us;
 };
 
 /* Default offset of capability registers */
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index c14a69b36d27..3d583a10b926 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -215,6 +215,7 @@ struct usb_ep {
         struct list_head        ep_list;
         struct usb_ep_caps      caps;
         bool                    claimed;
+        bool                    enabled;
         unsigned                maxpacket:16;
         unsigned                maxpacket_limit:16;
         unsigned                max_streams:16;
@@ -264,7 +265,18 @@ static inline void usb_ep_set_maxpacket_limit(struct usb_ep *ep,
  */
 static inline int usb_ep_enable(struct usb_ep *ep)
 {
-        return ep->ops->enable(ep, ep->desc);
+        int ret;
+
+        if (ep->enabled)
+                return 0;
+
+        ret = ep->ops->enable(ep, ep->desc);
+        if (ret)
+                return ret;
+
+        ep->enabled = true;
+
+        return 0;
 }
 
 /**
@@ -281,7 +293,18 @@ static inline int usb_ep_enable(struct usb_ep *ep)
  */
 static inline int usb_ep_disable(struct usb_ep *ep)
 {
-        return ep->ops->disable(ep);
+        int ret;
+
+        if (!ep->enabled)
+                return 0;
+
+        ret = ep->ops->disable(ep);
+        if (ret)
+                return ret;
+
+        ep->enabled = false;
+
+        return 0;
 }
 
 /**
@@ -1233,6 +1256,8 @@ extern struct usb_ep *usb_ep_autoconfig_ss(struct usb_gadget *,
                         struct usb_endpoint_descriptor *,
                         struct usb_ss_ep_comp_descriptor *);
 
+extern void usb_ep_autoconfig_release(struct usb_ep *);
+
 extern void usb_ep_autoconfig_reset(struct usb_gadget *);
 
 #endif /* __LINUX_USB_GADGET_H */
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index d2784c10bfe2..f89c24bd53a4 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -58,12 +58,6 @@
  *
  * Since "struct usb_bus" is so thin, you can't share much code in it.
  * This framework is a layer over that, and should be more sharable.
- *
- * @authorized_default: Specifies if new devices are authorized to
- *                      connect by default or they require explicit
- *                      user space authorization; this bit is settable
- *                      through /sys/class/usb_host/X/authorized_default.
- *                      For the rest is RO, so we don't lock to r/w it.
  */
 
 /*-------------------------------------------------------------------------*/
@@ -120,6 +114,8 @@ struct usb_hcd {
 #define HCD_FLAG_WAKEUP_PENDING         4       /* root hub is resuming? */
 #define HCD_FLAG_RH_RUNNING             5       /* root hub is running? */
 #define HCD_FLAG_DEAD                   6       /* controller has died? */
+#define HCD_FLAG_INTF_AUTHORIZED        7       /* authorize interfaces? */
+#define HCD_FLAG_DEV_AUTHORIZED         8       /* authorize devices? */
 
         /* The flags can be tested using these macros; they are likely to
          * be slightly faster than test_bit().
@@ -131,6 +127,22 @@ struct usb_hcd {
 #define HCD_RH_RUNNING(hcd)     ((hcd)->flags & (1U << HCD_FLAG_RH_RUNNING))
 #define HCD_DEAD(hcd)           ((hcd)->flags & (1U << HCD_FLAG_DEAD))
 
+        /*
+         * Specifies if interfaces are authorized by default
+         * or they require explicit user space authorization; this bit is
+         * settable through /sys/class/usb_host/X/interface_authorized_default
+         */
+#define HCD_INTF_AUTHORIZED(hcd) \
+        ((hcd)->flags & (1U << HCD_FLAG_INTF_AUTHORIZED))
+
+        /*
+         * Specifies if devices are authorized by default
+         * or they require explicit user space authorization; this bit is
+         * settable through /sys/class/usb_host/X/authorized_default
+         */
+#define HCD_DEV_AUTHORIZED(hcd) \
+        ((hcd)->flags & (1U << HCD_FLAG_DEV_AUTHORIZED))
+
         /* Flags that get set only during HCD registration or removal. */
         unsigned                rh_registered:1;/* is root hub registered? */
         unsigned                rh_pollable:1;  /* may we poll the root hub? */
@@ -141,7 +153,6 @@ struct usb_hcd {
          * support the new root-hub polling mechanism. */
         unsigned                uses_new_polling:1;
         unsigned                wireless:1;     /* Wireless USB HCD */
-        unsigned                authorized_default:1;
         unsigned                has_tt:1;       /* Integrated TT in root hub */
         unsigned                amd_resume_bug:1; /* AMD remote wakeup quirk */
         unsigned                can_do_streams:1; /* HC supports streams */
@@ -239,6 +250,7 @@ struct hc_driver {
 #define HCD_USB2        0x0020          /* USB 2.0 */
 #define HCD_USB25       0x0030          /* Wireless USB 1.0 (USB 2.5)*/
 #define HCD_USB3        0x0040          /* USB 3.0 */
+#define HCD_USB31       0x0050          /* USB 3.1 */
 #define HCD_MASK        0x0070
 #define HCD_BH          0x0100          /* URB complete in BH context */
 
diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h
index a4ee1b582183..fa6dc132bd1b 100644
--- a/include/linux/usb/musb.h
+++ b/include/linux/usb/musb.h
@@ -95,7 +95,7 @@ struct musb_hdrc_config {
         /* musb CLKIN in Blackfin in MHZ */
         unsigned char   clkin;
 #endif
-
+        u32             maximum_speed;
 };
 
 struct musb_hdrc_platform_data {
diff --git a/include/linux/usb/of.h b/include/linux/usb/of.h
index 8c5a818ec244..c3fe9e48ce27 100644
--- a/include/linux/usb/of.h
+++ b/include/linux/usb/of.h
@@ -12,22 +12,10 @@
 #include <linux/usb/phy.h>
 
 #if IS_ENABLED(CONFIG_OF)
-enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np);
-enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np);
 bool of_usb_host_tpl_support(struct device_node *np);
 int of_usb_update_otg_caps(struct device_node *np,
                         struct usb_otg_caps *otg_caps);
 #else
-static inline enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np)
-{
-        return USB_DR_MODE_UNKNOWN;
-}
-
-static inline enum usb_device_speed
-of_usb_get_maximum_speed(struct device_node *np)
-{
-        return USB_SPEED_UNKNOWN;
-}
 static inline bool of_usb_host_tpl_support(struct device_node *np)
 {
         return false;
diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h
index bd1dcf816100..67929df86df5 100644
--- a/include/linux/usb/otg.h
+++ b/include/linux/usb/otg.h
@@ -119,4 +119,13 @@ enum usb_dr_mode {
         USB_DR_MODE_OTG,
 };
 
+/**
+ * usb_get_dr_mode - Get dual role mode for given device
+ * @dev: Pointer to the given device
+ *
+ * The function gets phy interface string from property 'dr_mode',
+ * and returns the correspondig enum usb_dr_mode
+ */
+extern enum usb_dr_mode usb_get_dr_mode(struct device *dev);
+
 #endif /* __LINUX_USB_OTG_H */
diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h
index e39f251cf861..31a8068c42a5 100644
--- a/include/linux/usb/phy.h
+++ b/include/linux/usb/phy.h
@@ -63,7 +63,7 @@ enum usb_otg_state {
 struct usb_phy;
 struct usb_otg;
 
-/* for transceivers connected thru an ULPI interface, the user must
+/* for phys connected thru an ULPI interface, the user must
  * provide access ops
  */
 struct usb_phy_io_ops {
@@ -92,10 +92,10 @@ struct usb_phy {
         u16                     port_status;
         u16                     port_change;
 
-        /* to support controllers that have multiple transceivers */
+        /* to support controllers that have multiple phys */
         struct list_head        head;
 
-        /* initialize/shutdown the OTG controller */
+        /* initialize/shutdown the phy */
         int     (*init)(struct usb_phy *x);
         void    (*shutdown)(struct usb_phy *x);
 
@@ -106,7 +106,7 @@ struct usb_phy {
         int     (*set_power)(struct usb_phy *x,
                                 unsigned mA);
 
-        /* Set transceiver into suspend mode */
+        /* Set phy into suspend mode */
         int     (*set_suspend)(struct usb_phy *x,
                                 int suspend);