drivers/usb/core/usb.h

   1 #include <linux/pm.h>
   2
   3 /* Functions local to drivers/usb/core/ */
   4
   5 extern int usb_create_sysfs_dev_files(struct usb_device *dev);
   6 extern void usb_remove_sysfs_dev_files(struct usb_device *dev);
   7 extern int usb_create_sysfs_intf_files(struct usb_interface *intf);
   8 extern void usb_remove_sysfs_intf_files(struct usb_interface *intf);
   9 extern int usb_create_ep_devs(struct device *parent,
  10                                 struct usb_host_endpoint *endpoint,
  11                                 struct usb_device *udev);
  12 extern void usb_remove_ep_devs(struct usb_host_endpoint *endpoint);
  13
  14 extern void usb_enable_endpoint(struct usb_device *dev,
  15                 struct usb_host_endpoint *ep, bool reset_toggle);
  16 extern void usb_enable_interface(struct usb_device *dev,
  17                 struct usb_interface *intf, bool reset_toggles);
  18 extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr,
  19                 bool reset_hardware);
  20 extern void usb_disable_interface(struct usb_device *dev,
  21                 struct usb_interface *intf, bool reset_hardware);
  22 extern void usb_release_interface_cache(struct kref *ref);
  23 extern void usb_disable_device(struct usb_device *dev, int skip_ep0);
  24 extern int usb_deauthorize_device(struct usb_device *);
  25 extern int usb_authorize_device(struct usb_device *);
  26 extern void usb_detect_quirks(struct usb_device *udev);
  27
  28 extern int usb_get_device_descriptor(struct usb_device *dev,
  29                 unsigned int size);
  30 extern char *usb_cache_string(struct usb_device *udev, int index);
  31 extern int usb_set_configuration(struct usb_device *dev, int configuration);
  32 extern int usb_choose_configuration(struct usb_device *udev);
  33
  34 extern void usb_kick_khubd(struct usb_device *dev);
  35 extern int usb_match_device(struct usb_device *dev,
  36                             const struct usb_device_id *id);
  37 extern void usb_forced_unbind_intf(struct usb_interface *intf);
  38 extern void usb_rebind_intf(struct usb_interface *intf);
  39
  40 extern int  usb_hub_init(void);
  41 extern void usb_hub_cleanup(void);
  42 extern int usb_major_init(void);
  43 extern void usb_major_cleanup(void);
  44 extern int usb_host_init(void);
  45 extern void usb_host_cleanup(void);
  46
  47 #ifdef  CONFIG_PM
  48
  49 extern int usb_suspend(struct device *dev, pm_message_t msg);
  50 extern int usb_resume(struct device *dev, pm_message_t msg);
  51
  52 extern void usb_autosuspend_work(struct work_struct *work);
  53 extern void usb_autoresume_work(struct work_struct *work);
  54 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
  55 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
  56 extern int usb_external_suspend_device(struct usb_device *udev,
  57                 pm_message_t msg);
  58 extern int usb_external_resume_device(struct usb_device *udev,
  59                 pm_message_t msg);
  60
  61 static inline void usb_pm_lock(struct usb_device *udev)
  62 {
  63         mutex_lock_nested(&udev->pm_mutex, udev->level);
  64 }
  65
  66 static inline void usb_pm_unlock(struct usb_device *udev)
  67 {
  68         mutex_unlock(&udev->pm_mutex);
  69 }
  70
  71 #else
  72
  73 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
  74 {
  75         return 0;
  76 }
  77
  78 static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
  79 {
  80         return 0;
  81 }
  82
  83 static inline void usb_pm_lock(struct usb_device *udev) {}
  84 static inline void usb_pm_unlock(struct usb_device *udev) {}
  85
  86 #endif
  87
  88 #ifdef CONFIG_USB_SUSPEND
  89
  90 extern void usb_autosuspend_device(struct usb_device *udev);
  91 extern void usb_try_autosuspend_device(struct usb_device *udev);
  92 extern int usb_autoresume_device(struct usb_device *udev);
  93
  94 #else
  95
  96 #define usb_autosuspend_device(udev)            do {} while (0)
  97 #define usb_try_autosuspend_device(udev)        do {} while (0)
  98 static inline int usb_autoresume_device(struct usb_device *udev)
  99 {
 100         return 0;
 101 }
 102
 103 #endif
 104
 105 extern struct workqueue_struct *ksuspend_usb_wq;
 106 extern struct bus_type usb_bus_type;
 107 extern struct device_type usb_device_type;
 108 extern struct device_type usb_if_device_type;
 109 extern struct usb_device_driver usb_generic_driver;
 110
 111 static inline int is_usb_device(const struct device *dev)
 112 {
 113         return dev->type == &usb_device_type;
 114 }
 115
 116 /* Do the same for device drivers and interface drivers. */
 117
 118 static inline int is_usb_device_driver(struct device_driver *drv)
 119 {
 120         return container_of(drv, struct usbdrv_wrap, driver)->
 121                         for_devices;
 122 }
 123
 124 /* Interfaces and their "power state" are owned by usbcore */
 125
 126 static inline void mark_active(struct usb_interface *f)
 127 {
 128         f->is_active = 1;
 129 }
 130
 131 static inline void mark_quiesced(struct usb_interface *f)
 132 {
 133         f->is_active = 0;
 134 }
 135
 136 static inline int is_active(const struct usb_interface *f)
 137 {
 138         return f->is_active;
 139 }
 140
 141
 142 /* for labeling diagnostics */
 143 extern const char *usbcore_name;
 144
 145 /* sysfs stuff */
 146 extern struct attribute_group *usb_device_groups[];
 147 extern struct attribute_group *usb_interface_groups[];
 148
 149 /* usbfs stuff */
 150 extern struct mutex usbfs_mutex;
 151 extern struct usb_driver usbfs_driver;
 152 extern const struct file_operations usbfs_devices_fops;
 153 extern const struct file_operations usbdev_file_operations;
 154 extern void usbfs_conn_disc_event(void);
 155
 156 extern int usb_devio_init(void);
 157 extern void usb_devio_cleanup(void);
 158
 159 /* internal notify stuff */
 160 extern void usb_notify_add_device(struct usb_device *udev);
 161 extern void usb_notify_remove_device(struct usb_device *udev);
 162 extern void usb_notify_add_bus(struct usb_bus *ubus);
 163 extern void usb_notify_remove_bus(struct usb_bus *ubus);
 164