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
  45 #ifdef  CONFIG_PM
  46
  47 extern int usb_suspend(struct device *dev, pm_message_t msg);
  48 extern int usb_resume(struct device *dev, pm_message_t msg);
  49
  50 extern void usb_autosuspend_work(struct work_struct *work);
  51 extern void usb_autoresume_work(struct work_struct *work);
  52 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
  53 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
  54 extern int usb_external_suspend_device(struct usb_device *udev,
  55                 pm_message_t msg);
  56 extern int usb_external_resume_device(struct usb_device *udev,
  57                 pm_message_t msg);
  58
  59 static inline void usb_pm_lock(struct usb_device *udev)
  60 {
  61         mutex_lock_nested(&udev->pm_mutex, udev->level);
  62 }
  63
  64 static inline void usb_pm_unlock(struct usb_device *udev)
  65 {
  66         mutex_unlock(&udev->pm_mutex);
  67 }
  68
  69 #else
  70
  71 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
  72 {
  73         return 0;
  74 }
  75
  76 static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
  77 {
  78         return 0;
  79 }
  80
  81 static inline void usb_pm_lock(struct usb_device *udev) {}
  82 static inline void usb_pm_unlock(struct usb_device *udev) {}
  83
  84 #endif
  85
  86 #ifdef CONFIG_USB_SUSPEND
  87
  88 extern void usb_autosuspend_device(struct usb_device *udev);
  89 extern void usb_try_autosuspend_device(struct usb_device *udev);
  90 extern int usb_autoresume_device(struct usb_device *udev);
  91
  92 #else
  93
  94 #define usb_autosuspend_device(udev)            do {} while (0)
  95 #define usb_try_autosuspend_device(udev)        do {} while (0)
  96 static inline int usb_autoresume_device(struct usb_device *udev)
  97 {
  98         return 0;
  99 }
 100
 101 #endif
 102
 103 extern struct workqueue_struct *ksuspend_usb_wq;
 104 extern struct bus_type usb_bus_type;
 105 extern struct device_type usb_device_type;
 106 extern struct device_type usb_if_device_type;
 107 extern struct device_type usb_ep_device_type;
 108 extern struct usb_device_driver usb_generic_driver;
 109
 110 static inline int is_usb_device(const struct device *dev)
 111 {
 112         return dev->type == &usb_device_type;
 113 }
 114
 115 static inline int is_usb_interface(const struct device *dev)
 116 {
 117         return dev->type == &usb_if_device_type;
 118 }
 119
 120 static inline int is_usb_endpoint(const struct device *dev)
 121 {
 122         return dev->type == &usb_ep_device_type;
 123 }
 124
 125 /* Do the same for device drivers and interface drivers. */
 126
 127 static inline int is_usb_device_driver(struct device_driver *drv)
 128 {
 129         return container_of(drv, struct usbdrv_wrap, driver)->
 130                         for_devices;
 131 }
 132
 133 /* Interfaces and their "power state" are owned by usbcore */
 134
 135 static inline void mark_active(struct usb_interface *f)
 136 {
 137         f->is_active = 1;
 138 }
 139
 140 static inline void mark_quiesced(struct usb_interface *f)
 141 {
 142         f->is_active = 0;
 143 }
 144
 145 static inline int is_active(const struct usb_interface *f)
 146 {
 147         return f->is_active;
 148 }
 149
 150
 151 /* for labeling diagnostics */
 152 extern const char *usbcore_name;
 153
 154 /* sysfs stuff */
 155 extern struct attribute_group *usb_device_groups[];
 156 extern struct attribute_group *usb_interface_groups[];
 157
 158 /* usbfs stuff */
 159 extern struct mutex usbfs_mutex;
 160 extern struct usb_driver usbfs_driver;
 161 extern const struct file_operations usbfs_devices_fops;
 162 extern const struct file_operations usbdev_file_operations;
 163 extern void usbfs_conn_disc_event(void);
 164
 165 extern int usb_devio_init(void);
 166 extern void usb_devio_cleanup(void);
 167
 168 /* internal notify stuff */
 169 extern void usb_notify_add_device(struct usb_device *udev);
 170 extern void usb_notify_remove_device(struct usb_device *udev);
 171 extern void usb_notify_add_bus(struct usb_bus *ubus);
 172 extern void usb_notify_remove_bus(struct usb_bus *ubus);
 173