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,
   8                                 struct usb_host_endpoint *endpoint,
   9                                 struct usb_device *udev);
  10 extern void usb_remove_ep_files(struct usb_host_endpoint *endpoint);
  11
  12 extern void usb_enable_endpoint(struct usb_device *dev,
  13                 struct usb_host_endpoint *ep);
  14 extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr);
  15 extern void usb_disable_interface(struct usb_device *dev,
  16                 struct usb_interface *intf);
  17 extern void usb_release_interface_cache(struct kref *ref);
  18 extern void usb_disable_device(struct usb_device *dev, int skip_ep0);
  19 extern int usb_deauthorize_device(struct usb_device *);
  20 extern int usb_authorize_device(struct usb_device *);
  21 extern void usb_detect_quirks(struct usb_device *udev);
  22
  23 extern int usb_get_device_descriptor(struct usb_device *dev,
  24                 unsigned int size);
  25 extern char *usb_cache_string(struct usb_device *udev, int index);
  26 extern int usb_set_configuration(struct usb_device *dev, int configuration);
  27 extern int usb_choose_configuration(struct usb_device *udev);
  28
  29 extern void usb_kick_khubd(struct usb_device *dev);
  30 extern int usb_match_device(struct usb_device *dev,
  31                             const struct usb_device_id *id);
  32
  33 extern int  usb_hub_init(void);
  34 extern void usb_hub_cleanup(void);
  35 extern int usb_major_init(void);
  36 extern void usb_major_cleanup(void);
  37 extern int usb_host_init(void);
  38 extern void usb_host_cleanup(void);
  39
  40 #ifdef  CONFIG_PM
  41
  42 extern void usb_autosuspend_work(struct work_struct *work);
  43 extern int usb_port_suspend(struct usb_device *dev);
  44 extern int usb_port_resume(struct usb_device *dev);
  45 extern int usb_external_suspend_device(struct usb_device *udev,
  46                 pm_message_t msg);
  47 extern int usb_external_resume_device(struct usb_device *udev);
  48
  49 static inline void usb_pm_lock(struct usb_device *udev)
  50 {
  51         mutex_lock_nested(&udev->pm_mutex, udev->level);
  52 }
  53
  54 static inline void usb_pm_unlock(struct usb_device *udev)
  55 {
  56         mutex_unlock(&udev->pm_mutex);
  57 }
  58
  59 #else
  60
  61 static inline int usb_port_suspend(struct usb_device *udev)
  62 {
  63         return 0;
  64 }
  65
  66 static inline int usb_port_resume(struct usb_device *udev)
  67 {
  68         return 0;
  69 }
  70
  71 static inline void usb_pm_lock(struct usb_device *udev) {}
  72 static inline void usb_pm_unlock(struct usb_device *udev) {}
  73
  74 #endif
  75
  76 #ifdef CONFIG_USB_SUSPEND
  77
  78 extern void usb_autosuspend_device(struct usb_device *udev);
  79 extern void usb_try_autosuspend_device(struct usb_device *udev);
  80 extern int usb_autoresume_device(struct usb_device *udev);
  81
  82 #else
  83
  84 #define usb_autosuspend_device(udev)            do {} while (0)
  85 #define usb_try_autosuspend_device(udev)        do {} while (0)
  86 static inline int usb_autoresume_device(struct usb_device *udev)
  87 {
  88         return 0;
  89 }
  90
  91 #endif
  92
  93 extern struct workqueue_struct *ksuspend_usb_wq;
  94 extern struct bus_type usb_bus_type;
  95 extern struct device_type usb_device_type;
  96 extern struct device_type usb_if_device_type;
  97 extern struct usb_device_driver usb_generic_driver;
  98
  99 static inline int is_usb_device(const struct device *dev)
 100 {
 101         return dev->type == &usb_device_type;
 102 }
 103
 104 /* Do the same for device drivers and interface drivers. */
 105
 106 static inline int is_usb_device_driver(struct device_driver *drv)
 107 {
 108         return container_of(drv, struct usbdrv_wrap, driver)->
 109                         for_devices;
 110 }
 111
 112 /* Interfaces and their "power state" are owned by usbcore */
 113
 114 static inline void mark_active(struct usb_interface *f)
 115 {
 116         f->is_active = 1;
 117         f->dev.power.power_state.event = PM_EVENT_ON;
 118 }
 119
 120 static inline void mark_quiesced(struct usb_interface *f)
 121 {
 122         f->is_active = 0;
 123         f->dev.power.power_state.event = PM_EVENT_SUSPEND;
 124 }
 125
 126 static inline int is_active(const struct usb_interface *f)
 127 {
 128         return f->is_active;
 129 }
 130
 131
 132 /* for labeling diagnostics */
 133 extern const char *usbcore_name;
 134
 135 /* usbfs stuff */
 136 extern struct mutex usbfs_mutex;
 137 extern struct usb_driver usbfs_driver;
 138 extern const struct file_operations usbfs_devices_fops;
 139 extern const struct file_operations usbdev_file_operations;
 140 extern void usbfs_conn_disc_event(void);
 141
 142 extern int usb_devio_init(void);
 143 extern void usb_devio_cleanup(void);
 144
 145 struct dev_state {
 146         struct list_head list;      /* state list */
 147         struct usb_device *dev;
 148         struct file *file;
 149         spinlock_t lock;            /* protects the async urb lists */
 150         struct list_head async_pending;
 151         struct list_head async_completed;
 152         wait_queue_head_t wait;     /* wake up if a request completed */
 153         unsigned int discsignr;
 154         struct pid *disc_pid;
 155         uid_t disc_uid, disc_euid;
 156         void __user *disccontext;
 157         unsigned long ifclaimed;
 158         u32 secid;
 159 };
 160
 161 /* internal notify stuff */
 162 extern void usb_notify_add_device(struct usb_device *udev);
 163 extern void usb_notify_remove_device(struct usb_device *udev);
 164 extern void usb_notify_add_bus(struct usb_bus *ubus);
 165 extern void usb_notify_remove_bus(struct usb_bus *ubus);
 166