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_claim_port(struct usb_device *hdev, unsigned port,
  41                 void *owner);
  42 extern int usb_hub_release_port(struct usb_device *hdev, unsigned port,
  43                 void *owner);
  44 extern void usb_hub_release_all_ports(struct usb_device *hdev, void *owner);
  45 extern bool usb_device_is_owned(struct usb_device *udev);
  46
  47 extern int  usb_hub_init(void);
  48 extern void usb_hub_cleanup(void);
  49 extern int usb_major_init(void);
  50 extern void usb_major_cleanup(void);
  51
  52 #ifdef  CONFIG_PM
  53
  54 extern int usb_suspend(struct device *dev, pm_message_t msg);
  55 extern int usb_resume(struct device *dev, pm_message_t msg);
  56
  57 extern void usb_autosuspend_work(struct work_struct *work);
  58 extern void usb_autoresume_work(struct work_struct *work);
  59 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
  60 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
  61 extern int usb_external_suspend_device(struct usb_device *udev,
  62                 pm_message_t msg);
  63 extern int usb_external_resume_device(struct usb_device *udev,
  64                 pm_message_t msg);
  65
  66 static inline void usb_pm_lock(struct usb_device *udev)
  67 {
  68         mutex_lock_nested(&udev->pm_mutex, udev->level);
  69 }
  70
  71 static inline void usb_pm_unlock(struct usb_device *udev)
  72 {
  73         mutex_unlock(&udev->pm_mutex);
  74 }
  75
  76 #else
  77
  78 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
  79 {
  80         return 0;
  81 }
  82
  83 static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
  84 {
  85         return 0;
  86 }
  87
  88 static inline void usb_pm_lock(struct usb_device *udev) {}
  89 static inline void usb_pm_unlock(struct usb_device *udev) {}
  90
  91 #endif
  92
  93 #ifdef CONFIG_USB_SUSPEND
  94
  95 extern void usb_autosuspend_device(struct usb_device *udev);
  96 extern void usb_try_autosuspend_device(struct usb_device *udev);
  97 extern int usb_autoresume_device(struct usb_device *udev);
  98
  99 #else
 100
 101 #define usb_autosuspend_device(udev)            do {} while (0)
 102 #define usb_try_autosuspend_device(udev)        do {} while (0)
 103 static inline int usb_autoresume_device(struct usb_device *udev)
 104 {
 105         return 0;
 106 }
 107
 108 #endif
 109
 110 extern struct workqueue_struct *ksuspend_usb_wq;
 111 extern struct bus_type usb_bus_type;
 112 extern struct device_type usb_device_type;
 113 extern struct device_type usb_if_device_type;
 114 extern struct device_type usb_ep_device_type;
 115 extern struct usb_device_driver usb_generic_driver;
 116
 117 static inline int is_usb_device(const struct device *dev)
 118 {
 119         return dev->type == &usb_device_type;
 120 }
 121
 122 static inline int is_usb_interface(const struct device *dev)
 123 {
 124         return dev->type == &usb_if_device_type;
 125 }
 126
 127 static inline int is_usb_endpoint(const struct device *dev)
 128 {
 129         return dev->type == &usb_ep_device_type;
 130 }
 131
 132 /* Do the same for device drivers and interface drivers. */
 133
 134 static inline int is_usb_device_driver(struct device_driver *drv)
 135 {
 136         return container_of(drv, struct usbdrv_wrap, driver)->
 137                         for_devices;
 138 }
 139
 140 /* Interfaces and their "power state" are owned by usbcore */
 141
 142 static inline void mark_active(struct usb_interface *f)
 143 {
 144         f->is_active = 1;
 145 }
 146
 147 static inline void mark_quiesced(struct usb_interface *f)
 148 {
 149         f->is_active = 0;
 150 }
 151
 152 static inline int is_active(const struct usb_interface *f)
 153 {
 154         return f->is_active;
 155 }
 156
 157
 158 /* for labeling diagnostics */
 159 extern const char *usbcore_name;
 160
 161 /* sysfs stuff */
 162 extern const struct attribute_group *usb_device_groups[];
 163 extern const struct attribute_group *usb_interface_groups[];
 164
 165 /* usbfs stuff */
 166 extern struct mutex usbfs_mutex;
 167 extern struct usb_driver usbfs_driver;
 168 extern const struct file_operations usbfs_devices_fops;
 169 extern const struct file_operations usbdev_file_operations;
 170 extern void usbfs_conn_disc_event(void);
 171
 172 extern int usb_devio_init(void);
 173 extern void usb_devio_cleanup(void);
 174
 175 /* internal notify stuff */
 176 extern void usb_notify_add_device(struct usb_device *udev);
 177 extern void usb_notify_remove_device(struct usb_device *udev);
 178 extern void usb_notify_add_bus(struct usb_bus *ubus);
 179 extern void usb_notify_remove_bus(struct usb_bus *ubus);
 180