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