drivers/usb/core/usb.h

   1 /* Functions local to drivers/usb/core/ */
   2
   3 extern void usb_create_sysfs_dev_files (struct usb_device *dev);
   4 extern void usb_remove_sysfs_dev_files (struct usb_device *dev);
   5 extern void usb_create_sysfs_intf_files (struct usb_interface *intf);
   6 extern void usb_remove_sysfs_intf_files (struct usb_interface *intf);
   7 extern void 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
  25 extern int  usb_hub_init(void);
  26 extern void usb_hub_cleanup(void);
  27 extern int usb_major_init(void);
  28 extern void usb_major_cleanup(void);
  29 extern int usb_host_init(void);
  30 extern void usb_host_cleanup(void);
  31
  32 #ifdef  CONFIG_PM
  33
  34 extern int usb_suspend_both(struct usb_device *udev, pm_message_t msg);
  35 extern int usb_resume_both(struct usb_device *udev);
  36 extern int usb_port_suspend(struct usb_device *dev);
  37 extern int usb_port_resume(struct usb_device *dev);
  38
  39 #else
  40
  41 #define usb_suspend_both(udev, msg)     0
  42 static inline int usb_resume_both(struct usb_device *udev)
  43 {
  44         return 0;
  45 }
  46 #define usb_port_suspend(dev)           0
  47 #define usb_port_resume(dev)            0
  48
  49 #endif
  50
  51 #ifdef CONFIG_USB_SUSPEND
  52
  53 #define USB_AUTOSUSPEND_DELAY   (HZ*2)
  54
  55 extern void usb_autosuspend_device(struct usb_device *udev, int dec_busy_cnt);
  56 extern int usb_autoresume_device(struct usb_device *udev, int inc_busy_cnt);
  57
  58 #else
  59
  60 #define usb_autosuspend_device(udev, dec_busy_cnt)      do {} while (0)
  61 #define usb_autoresume_device(udev, inc_busy_cnt)       0
  62
  63 #endif
  64
  65 extern struct bus_type usb_bus_type;
  66 extern struct usb_device_driver usb_generic_driver;
  67
  68 /* Here's how we tell apart devices and interfaces.  Luckily there's
  69  * no such thing as a platform USB device, so we can steal the use
  70  * of the platform_data field. */
  71
  72 static inline int is_usb_device(const struct device *dev)
  73 {
  74         return dev->platform_data == &usb_generic_driver;
  75 }
  76
  77 /* Do the same for device drivers and interface drivers. */
  78
  79 static inline int is_usb_device_driver(struct device_driver *drv)
  80 {
  81         return container_of(drv, struct usbdrv_wrap, driver)->
  82                         for_devices;
  83 }
  84
  85 /* Interfaces and their "power state" are owned by usbcore */
  86
  87 static inline void mark_active(struct usb_interface *f)
  88 {
  89         f->is_active = 1;
  90 }
  91
  92 static inline void mark_quiesced(struct usb_interface *f)
  93 {
  94         f->is_active = 0;
  95 }
  96
  97 static inline int is_active(const struct usb_interface *f)
  98 {
  99         return f->is_active;
 100 }
 101
 102
 103 /* for labeling diagnostics */
 104 extern const char *usbcore_name;
 105
 106 /* usbfs stuff */
 107 extern struct mutex usbfs_mutex;
 108 extern struct usb_driver usbfs_driver;
 109 extern const struct file_operations usbfs_devices_fops;
 110 extern const struct file_operations usbfs_device_file_operations;
 111 extern void usbfs_conn_disc_event(void);
 112
 113 extern int usbdev_init(void);
 114 extern void usbdev_cleanup(void);
 115
 116 struct dev_state {
 117         struct list_head list;      /* state list */
 118         struct usb_device *dev;
 119         struct file *file;
 120         spinlock_t lock;            /* protects the async urb lists */
 121         struct list_head async_pending;
 122         struct list_head async_completed;
 123         wait_queue_head_t wait;     /* wake up if a request completed */
 124         unsigned int discsignr;
 125         pid_t disc_pid;
 126         uid_t disc_uid, disc_euid;
 127         void __user *disccontext;
 128         unsigned long ifclaimed;
 129         u32 secid;
 130 };
 131
 132 /* internal notify stuff */
 133 extern void usb_notify_add_device(struct usb_device *udev);
 134 extern void usb_notify_remove_device(struct usb_device *udev);
 135 extern void usb_notify_add_bus(struct usb_bus *ubus);
 136 extern void usb_notify_remove_bus(struct usb_bus *ubus);
 137