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