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
  17 extern int usb_get_device_descriptor(struct usb_device *dev,
  18                 unsigned int size);
  19 extern char *usb_cache_string(struct usb_device *udev, int index);
  20 extern int usb_set_configuration(struct usb_device *dev, int configuration);
  21
  22 extern void usb_kick_khubd(struct usb_device *dev);
  23 extern void usb_resume_root_hub(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 int usb_suspend_both(struct usb_device *udev, pm_message_t msg);
  37 extern int usb_resume_both(struct usb_device *udev);
  38 extern int usb_port_suspend(struct usb_device *dev);
  39 extern int usb_port_resume(struct usb_device *dev);
  40
  41 static inline void usb_pm_lock(struct usb_device *udev)
  42 {
  43         mutex_lock_nested(&udev->pm_mutex, udev->level);
  44 }
  45
  46 static inline void usb_pm_unlock(struct usb_device *udev)
  47 {
  48         mutex_unlock(&udev->pm_mutex);
  49 }
  50
  51 #else
  52
  53 #define usb_suspend_both(udev, msg)     0
  54 static inline int usb_resume_both(struct usb_device *udev)
  55 {
  56         return 0;
  57 }
  58 #define usb_port_suspend(dev)           0
  59 #define usb_port_resume(dev)            0
  60 static inline void usb_pm_lock(struct usb_device *udev) {}
  61 static inline void usb_pm_unlock(struct usb_device *udev) {}
  62
  63 #endif
  64
  65 #ifdef CONFIG_USB_SUSPEND
  66
  67 #define USB_AUTOSUSPEND_DELAY   (HZ*2)
  68
  69 extern void usb_autosuspend_device(struct usb_device *udev);
  70 extern int usb_autoresume_device(struct usb_device *udev);
  71
  72 #else
  73
  74 #define usb_autosuspend_device(udev)    do {} while (0)
  75 static inline int usb_autoresume_device(struct usb_device *udev)
  76 {
  77         return 0;
  78 }
  79
  80 #endif
  81
  82 extern struct workqueue_struct *ksuspend_usb_wq;
  83 extern struct bus_type usb_bus_type;
  84 extern struct usb_device_driver usb_generic_driver;
  85
  86 /* Here's how we tell apart devices and interfaces.  Luckily there's
  87  * no such thing as a platform USB device, so we can steal the use
  88  * of the platform_data field. */
  89
  90 static inline int is_usb_device(const struct device *dev)
  91 {
  92         return dev->platform_data == &usb_generic_driver;
  93 }
  94
  95 /* Do the same for device drivers and interface drivers. */
  96
  97 static inline int is_usb_device_driver(struct device_driver *drv)
  98 {
  99         return container_of(drv, struct usbdrv_wrap, driver)->
 100                         for_devices;
 101 }
 102
 103 /* Interfaces and their "power state" are owned by usbcore */
 104
 105 static inline void mark_active(struct usb_interface *f)
 106 {
 107         f->is_active = 1;
 108 }
 109
 110 static inline void mark_quiesced(struct usb_interface *f)
 111 {
 112         f->is_active = 0;
 113 }
 114
 115 static inline int is_active(const struct usb_interface *f)
 116 {
 117         return f->is_active;
 118 }
 119
 120
 121 /* for labeling diagnostics */
 122 extern const char *usbcore_name;
 123
 124 /* usbfs stuff */
 125 extern struct mutex usbfs_mutex;
 126 extern struct usb_driver usbfs_driver;
 127 extern const struct file_operations usbfs_devices_fops;
 128 extern const struct file_operations usbfs_device_file_operations;
 129 extern void usbfs_conn_disc_event(void);
 130
 131 extern int usbdev_init(void);
 132 extern void usbdev_cleanup(void);
 133
 134 struct dev_state {
 135         struct list_head list;      /* state list */
 136         struct usb_device *dev;
 137         struct file *file;
 138         spinlock_t lock;            /* protects the async urb lists */
 139         struct list_head async_pending;
 140         struct list_head async_completed;
 141         wait_queue_head_t wait;     /* wake up if a request completed */
 142         unsigned int discsignr;
 143         struct pid *disc_pid;
 144         uid_t disc_uid, disc_euid;
 145         void __user *disccontext;
 146         unsigned long ifclaimed;
 147         u32 secid;
 148 };
 149
 150 /* internal notify stuff */
 151 extern void usb_notify_add_device(struct usb_device *udev);
 152 extern void usb_notify_remove_device(struct usb_device *udev);
 153 extern void usb_notify_add_bus(struct usb_bus *ubus);
 154 extern void usb_notify_remove_bus(struct usb_bus *ubus);
 155