USB: refactor usb device matching and create usb_device_match

[deliverable/linux.git] / drivers / usb / core / usb.h

diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 49f69236b4201614b5a8329f7d7d12ec0309d5d5..86692a23573ff4da1fce5860e5d75d674e073672 100644 (file)
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -1,10 +1,10 @@
 /* Functions local to drivers/usb/core/ */
 
-extern void usb_create_sysfs_dev_files (struct usb_device *dev);
+extern int usb_create_sysfs_dev_files (struct usb_device *dev);
 extern void usb_remove_sysfs_dev_files (struct usb_device *dev);
-extern void usb_create_sysfs_intf_files (struct usb_interface *intf);
+extern int usb_create_sysfs_intf_files (struct usb_interface *intf);
 extern void usb_remove_sysfs_intf_files (struct usb_interface *intf);
-extern void usb_create_ep_files(struct device *parent, struct usb_host_endpoint *endpoint,
+extern int usb_create_ep_files(struct device *parent, struct usb_host_endpoint *endpoint,
                                struct usb_device *udev);
 extern void usb_remove_ep_files(struct usb_host_endpoint *endpoint);
 
@@ -20,8 +20,9 @@ extern char *usb_cache_string(struct usb_device *udev, int index);
 extern int usb_set_configuration(struct usb_device *dev, int configuration);
 
 extern void usb_kick_khubd(struct usb_device *dev);
-extern void usb_suspend_root_hub(struct usb_device *hdev);
 extern void usb_resume_root_hub(struct usb_device *dev);
+extern int usb_match_device(struct usb_device *dev,
+                           const struct usb_device_id *id);
 
 extern int  usb_hub_init(void);
 extern void usb_hub_cleanup(void);
@@ -30,28 +31,90 @@ extern void usb_major_cleanup(void);
 extern int usb_host_init(void);
 extern void usb_host_cleanup(void);
 
-extern int usb_suspend_device(struct usb_device *dev);
-extern int usb_resume_device(struct usb_device *dev);
+#ifdef CONFIG_PM
 
-extern struct device_driver usb_generic_driver;
-extern int usb_generic_driver_data;
-extern int usb_device_match(struct device *dev, struct device_driver *drv);
+extern int usb_suspend_both(struct usb_device *udev, pm_message_t msg);
+extern int usb_resume_both(struct usb_device *udev);
+extern int usb_port_suspend(struct usb_device *dev);
+extern int usb_port_resume(struct usb_device *dev);
+
+static inline void usb_pm_lock(struct usb_device *udev)
+{
+       mutex_lock_nested(&udev->pm_mutex, udev->level);
+}
+
+static inline void usb_pm_unlock(struct usb_device *udev)
+{
+       mutex_unlock(&udev->pm_mutex);
+}
+
+#else
+
+#define usb_suspend_both(udev, msg)    0
+static inline int usb_resume_both(struct usb_device *udev)
+{
+       return 0;
+}
+#define usb_port_suspend(dev)          0
+#define usb_port_resume(dev)           0
+static inline void usb_pm_lock(struct usb_device *udev) {}
+static inline void usb_pm_unlock(struct usb_device *udev) {}
+
+#endif
+
+#ifdef CONFIG_USB_SUSPEND
+
+#define USB_AUTOSUSPEND_DELAY  (HZ*2)
+
+extern void usb_autosuspend_device(struct usb_device *udev);
+extern int usb_autoresume_device(struct usb_device *udev);
+
+#else
+
+#define usb_autosuspend_device(udev)   do {} while (0)
+static inline int usb_autoresume_device(struct usb_device *udev)
+{
+       return 0;
+}
+
+#endif
+
+extern struct workqueue_struct *ksuspend_usb_wq;
+extern struct bus_type usb_bus_type;
+extern struct usb_device_driver usb_generic_driver;
+
+/* Here's how we tell apart devices and interfaces.  Luckily there's
+ * no such thing as a platform USB device, so we can steal the use
+ * of the platform_data field. */
+
+static inline int is_usb_device(const struct device *dev)
+{
+       return dev->platform_data == &usb_generic_driver;
+}
+
+/* Do the same for device drivers and interface drivers. */
+
+static inline int is_usb_device_driver(struct device_driver *drv)
+{
+       return container_of(drv, struct usbdrv_wrap, driver)->
+                       for_devices;
+}
 
 /* Interfaces and their "power state" are owned by usbcore */
 
 static inline void mark_active(struct usb_interface *f)
 {
-       f->dev.power.power_state.event = PM_EVENT_ON;
+       f->is_active = 1;
 }
 
 static inline void mark_quiesced(struct usb_interface *f)
 {
-       f->dev.power.power_state.event = PM_EVENT_FREEZE;
+       f->is_active = 0;
 }
 
-static inline int is_active(struct usb_interface *f)
+static inline int is_active(const struct usb_interface *f)
 {
-       return f->dev.power.power_state.event == PM_EVENT_ON;
+       return f->is_active;
 }
 
 
@@ -59,9 +122,10 @@ static inline int is_active(struct usb_interface *f)
 extern const char *usbcore_name;
 
 /* usbfs stuff */
+extern struct mutex usbfs_mutex;
 extern struct usb_driver usbfs_driver;
-extern struct file_operations usbfs_devices_fops;
-extern struct file_operations usbfs_device_file_operations;
+extern const struct file_operations usbfs_devices_fops;
+extern const struct file_operations usbfs_device_file_operations;
 extern void usbfs_conn_disc_event(void);
 
 extern int usbdev_init(void);
@@ -76,7 +140,7 @@ struct dev_state {
        struct list_head async_completed;
        wait_queue_head_t wait;     /* wake up if a request completed */
        unsigned int discsignr;
-       pid_t disc_pid;
+       struct pid *disc_pid;
        uid_t disc_uid, disc_euid;
        void __user *disccontext;
        unsigned long ifclaimed;