drivers/usb/core/usb.h

   1 /* Functions local to drivers/usb/core/ */
   2
   3 extern int usb_create_sysfs_dev_files (struct usb_device *dev);
   4 extern void usb_remove_sysfs_dev_files (struct usb_device *dev);
   5 extern int usb_create_sysfs_intf_files (struct usb_interface *intf);
   6 extern void usb_remove_sysfs_intf_files (struct usb_interface *intf);
   7 extern int usb_create_ep_files(struct device *parent, struct usb_host_endpoint *endpoint,
   8                                 struct usb_device *udev);
   9 extern void usb_remove_ep_files(struct usb_host_endpoint *endpoint);
  10
  11 extern void usb_disable_endpoint (struct usb_device *dev, unsigned int epaddr);
  12 extern void usb_disable_interface (struct usb_device *dev,
  13                 struct usb_interface *intf);
  14 extern void usb_release_interface_cache(struct kref *ref);
  15 extern void usb_disable_device (struct usb_device *dev, int skip_ep0);
  16 extern void usb_detect_quirks(struct usb_device *udev);
  17
  18 extern int usb_get_device_descriptor(struct usb_device *dev,
  19                 unsigned int size);
  20 extern char *usb_cache_string(struct usb_device *udev, int index);
  21 extern int usb_set_configuration(struct usb_device *dev, int configuration);
  22
  23 extern void usb_kick_khubd(struct usb_device *dev);
  24 extern int usb_match_device(struct usb_device *dev,
  25                             const struct usb_device_id *id);
  26
  27 extern int  usb_hub_init(void);
  28 extern void usb_hub_cleanup(void);
  29 extern int usb_major_init(void);
  30 extern void usb_major_cleanup(void);
  31 extern int usb_host_init(void);
  32 extern void usb_host_cleanup(void);
  33
  34 #ifdef  CONFIG_PM
  35
  36 extern void usb_autosuspend_work(struct work_struct *work);
  37 extern int usb_port_suspend(struct usb_device *dev);
  38 extern int usb_port_resume(struct usb_device *dev);
  39 extern int usb_external_suspend_device(struct usb_device *udev,
  40                 pm_message_t msg);
  41 extern int usb_external_resume_device(struct usb_device *udev);
  42
  43 static inline void usb_pm_lock(struct usb_device *udev)
  44 {
  45         mutex_lock_nested(&udev->pm_mutex, udev->level);
  46 }
  47
  48 static inline void usb_pm_unlock(struct usb_device *udev)
  49 {
  50         mutex_unlock(&udev->pm_mutex);
  51 }
  52
  53 #else
  54
  55 #define usb_port_suspend(dev)           0
  56 #define usb_port_resume(dev)            0
  57 static inline void usb_pm_lock(struct usb_device *udev) {}
  58 static inline void usb_pm_unlock(struct usb_device *udev) {}
  59
  60 #endif
  61
  62 #ifdef CONFIG_USB_SUSPEND
  63
  64 extern void usb_autosuspend_device(struct usb_device *udev);
  65 extern void usb_try_autosuspend_device(struct usb_device *udev);
  66 extern int usb_autoresume_device(struct usb_device *udev);
  67
  68 #else
  69
  70 #define usb_autosuspend_device(udev)            do {} while (0)
  71 #define usb_try_autosuspend_device(udev)        do {} while (0)
  72 static inline int usb_autoresume_device(struct usb_device *udev)
  73 {
  74         return 0;
  75 }
  76
  77 #endif
  78
  79 extern struct workqueue_struct *ksuspend_usb_wq;
  80 extern struct bus_type usb_bus_type;
  81 extern struct device_type usb_device_type;
  82 extern struct device_type usb_if_device_type;
  83 extern struct usb_device_driver usb_generic_driver;
  84
  85 static inline int is_usb_device(const struct device *dev)
  86 {
  87         return dev->type == &usb_device_type;
  88 }
  89
  90 /* Do the same for device drivers and interface drivers. */
  91
  92 static inline int is_usb_device_driver(struct device_driver *drv)
  93 {
  94         return container_of(drv, struct usbdrv_wrap, driver)->
  95                         for_devices;
  96 }
  97
  98 /* Interfaces and their "power state" are owned by usbcore */
  99
 100 static inline void mark_active(struct usb_interface *f)
 101 {
 102         f->is_active = 1;
 103         f->dev.power.power_state.event = PM_EVENT_ON;
 104 }
 105
 106 static inline void mark_quiesced(struct usb_interface *f)
 107 {
 108         f->is_active = 0;
 109         f->dev.power.power_state.event = PM_EVENT_SUSPEND;
 110 }
 111
 112 static inline int is_active(const struct usb_interface *f)
 113 {
 114         return f->is_active;
 115 }
 116
 117
 118 /* for labeling diagnostics */
 119 extern const char *usbcore_name;
 120
 121 /* usbfs stuff */
 122 extern struct mutex usbfs_mutex;
 123 extern struct usb_driver usbfs_driver;
 124 extern const struct file_operations usbfs_devices_fops;
 125 extern const struct file_operations usbdev_file_operations;
 126 extern void usbfs_conn_disc_event(void);
 127
 128 extern int usb_devio_init(void);
 129 extern void usb_devio_cleanup(void);
 130
 131 struct dev_state {
 132         struct list_head list;      /* state list */
 133         struct usb_device *dev;
 134         struct file *file;
 135         spinlock_t lock;            /* protects the async urb lists */
 136         struct list_head async_pending;
 137         struct list_head async_completed;
 138         wait_queue_head_t wait;     /* wake up if a request completed */
 139         unsigned int discsignr;
 140         struct pid *disc_pid;
 141         uid_t disc_uid, disc_euid;
 142         void __user *disccontext;
 143         unsigned long ifclaimed;
 144         u32 secid;
 145 };
 146
 147 /* internal notify stuff */
 148 extern void usb_notify_add_device(struct usb_device *udev);
 149 extern void usb_notify_remove_device(struct usb_device *udev);
 150 extern void usb_notify_add_bus(struct usb_bus *ubus);
 151 extern void usb_notify_remove_bus(struct usb_bus *ubus);
 152