1 files changed, 62 insertions, 5 deletions

diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h
index 38ab3f46346..45824be0a2f 100644
--- a/include/linux/usb/otg.h
+++ b/include/linux/usb/otg.h
@@ -43,6 +43,13 @@ enum usb_phy_events {
         USB_EVENT_ENUMERATED,   /* gadget driver enumerated */
 };
 
+/* associate a type with PHY */
+enum usb_phy_type {
+        USB_PHY_TYPE_UNDEFINED,
+        USB_PHY_TYPE_USB2,
+        USB_PHY_TYPE_USB3,
+};
+
 struct usb_phy;
 
 /* for transceivers connected thru an ULPI interface, the user must
@@ -89,6 +96,7 @@ struct usb_phy {
         const char              *label;
         unsigned int             flags;
 
+        enum usb_phy_type       type;
         enum usb_otg_state      state;
         enum usb_phy_events     last_event;
 
@@ -105,6 +113,9 @@ struct usb_phy {
         u16                     port_status;
         u16                     port_change;
 
+        /* to support controllers that have multiple transceivers */
+        struct list_head        head;
+
         /* initialize/shutdown the OTG controller */
         int     (*init)(struct usb_phy *x);
         void    (*shutdown)(struct usb_phy *x);
@@ -117,11 +128,15 @@ struct usb_phy {
         int     (*set_suspend)(struct usb_phy *x,
                                 int suspend);
 
+        /* notify phy connect status change */
+        int     (*notify_connect)(struct usb_phy *x, int port);
+        int     (*notify_disconnect)(struct usb_phy *x, int port);
 };
 
 
 /* for board-specific init logic */
-extern int usb_set_transceiver(struct usb_phy *);
+extern int usb_add_phy(struct usb_phy *, enum usb_phy_type type);
+extern void usb_remove_phy(struct usb_phy *);
 
 #if defined(CONFIG_NOP_USB_XCEIV) || (defined(CONFIG_NOP_USB_XCEIV_MODULE) && defined(MODULE))
 /* sometimes transceivers are accessed only through e.g. ULPI */
@@ -172,16 +187,29 @@ usb_phy_shutdown(struct usb_phy *x)
 
 /* for usb host and peripheral controller drivers */
 #ifdef CONFIG_USB_OTG_UTILS
-extern struct usb_phy *usb_get_transceiver(void);
-extern void usb_put_transceiver(struct usb_phy *);
+extern struct usb_phy *usb_get_phy(enum usb_phy_type type);
+extern struct usb_phy *devm_usb_get_phy(struct device *dev,
+        enum usb_phy_type type);
+extern void usb_put_phy(struct usb_phy *);
+extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x);
 extern const char *otg_state_string(enum usb_otg_state state);
 #else
-static inline struct usb_phy *usb_get_transceiver(void)
+static inline struct usb_phy *usb_get_phy(enum usb_phy_type type)
+{
+        return NULL;
+}
+
+static inline struct usb_phy *devm_usb_get_phy(struct device *dev,
+        enum usb_phy_type type)
 {
         return NULL;
 }
 
-static inline void usb_put_transceiver(struct usb_phy *x)
+static inline void usb_put_phy(struct usb_phy *x)
+{
+}
+
+static inline void devm_usb_put_phy(struct device *dev, struct usb_phy *x)
 {
 }
 
@@ -252,6 +280,24 @@ usb_phy_set_suspend(struct usb_phy *x, int suspend)
 }
 
 static inline int
+usb_phy_notify_connect(struct usb_phy *x, int port)
+{
+        if (x->notify_connect)
+                return x->notify_connect(x, port);
+        else
+                return 0;
+}
+
+static inline int
+usb_phy_notify_disconnect(struct usb_phy *x, int port)
+{
+        if (x->notify_disconnect)
+                return x->notify_disconnect(x, port);
+        else
+                return 0;
+}
+
+static inline int
 otg_start_srp(struct usb_otg *otg)
 {
         if (otg && otg->start_srp)
@@ -276,4 +322,15 @@ usb_unregister_notifier(struct usb_phy *x, struct notifier_block *nb)
 /* for OTG controller drivers (and maybe other stuff) */
 extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);
 
+static inline const char *usb_phy_type_string(enum usb_phy_type type)
+{
+        switch (type) {
+        case USB_PHY_TYPE_USB2:
+                return "USB2 PHY";
+        case USB_PHY_TYPE_USB3:
+                return "USB3 PHY";
+        default:
+                return "UNKNOWN PHY TYPE";
+        }
+}
 #endif /* __LINUX_USB_OTG_H */