drivers/usb/core/usb.h

   1 #include <linux/pm.h>
   2 #include <linux/acpi.h>
   3
   4 struct dev_state;
   5
   6 /* Functions local to drivers/usb/core/ */
   7
   8 extern int usb_create_sysfs_dev_files(struct usb_device *dev);
   9 extern void usb_remove_sysfs_dev_files(struct usb_device *dev);
  10 extern void usb_create_sysfs_intf_files(struct usb_interface *intf);
  11 extern void usb_remove_sysfs_intf_files(struct usb_interface *intf);
  12 extern int usb_create_ep_devs(struct device *parent,
  13                                 struct usb_host_endpoint *endpoint,
  14                                 struct usb_device *udev);
  15 extern void usb_remove_ep_devs(struct usb_host_endpoint *endpoint);
  16
  17 extern void usb_enable_endpoint(struct usb_device *dev,
  18                 struct usb_host_endpoint *ep, bool reset_toggle);
  19 extern void usb_enable_interface(struct usb_device *dev,
  20                 struct usb_interface *intf, bool reset_toggles);
  21 extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr,
  22                 bool reset_hardware);
  23 extern void usb_disable_interface(struct usb_device *dev,
  24                 struct usb_interface *intf, bool reset_hardware);
  25 extern void usb_release_interface_cache(struct kref *ref);
  26 extern void usb_disable_device(struct usb_device *dev, int skip_ep0);
  27 extern int usb_deauthorize_device(struct usb_device *);
  28 extern int usb_authorize_device(struct usb_device *);
  29 extern void usb_detect_quirks(struct usb_device *udev);
  30 extern void usb_detect_interface_quirks(struct usb_device *udev);
  31 extern int usb_remove_device(struct usb_device *udev);
  32
  33 extern int usb_get_device_descriptor(struct usb_device *dev,
  34                 unsigned int size);
  35 extern int usb_get_bos_descriptor(struct usb_device *dev);
  36 extern void usb_release_bos_descriptor(struct usb_device *dev);
  37 extern char *usb_cache_string(struct usb_device *udev, int index);
  38 extern int usb_set_configuration(struct usb_device *dev, int configuration);
  39 extern int usb_choose_configuration(struct usb_device *udev);
  40
  41 static inline unsigned usb_get_max_power(struct usb_device *udev,
  42                 struct usb_host_config *c)
  43 {
  44         /* SuperSpeed power is in 8 mA units; others are in 2 mA units */
  45         unsigned mul = (udev->speed == USB_SPEED_SUPER ? 8 : 2);
  46
  47         return c->desc.bMaxPower * mul;
  48 }
  49
  50 extern void usb_kick_khubd(struct usb_device *dev);
  51 extern int usb_match_one_id_intf(struct usb_device *dev,
  52                                  struct usb_host_interface *intf,
  53                                  const struct usb_device_id *id);
  54 extern int usb_match_device(struct usb_device *dev,
  55                             const struct usb_device_id *id);
  56 extern void usb_forced_unbind_intf(struct usb_interface *intf);
  57 extern void usb_rebind_intf(struct usb_interface *intf);
  58
  59 extern int usb_hub_claim_port(struct usb_device *hdev, unsigned port,
  60                 struct dev_state *owner);
  61 extern int usb_hub_release_port(struct usb_device *hdev, unsigned port,
  62                 struct dev_state *owner);
  63 extern void usb_hub_release_all_ports(struct usb_device *hdev,
  64                 struct dev_state *owner);
  65 extern bool usb_device_is_owned(struct usb_device *udev);
  66
  67 extern int  usb_hub_init(void);
  68 extern void usb_hub_cleanup(void);
  69 extern int usb_major_init(void);
  70 extern void usb_major_cleanup(void);
  71
  72 #ifdef  CONFIG_PM
  73
  74 extern int usb_suspend(struct device *dev, pm_message_t msg);
  75 extern int usb_resume(struct device *dev, pm_message_t msg);
  76 extern int usb_resume_complete(struct device *dev);
  77
  78 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
  79 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
  80
  81 #else
  82
  83 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
  84 {
  85         return 0;
  86 }
  87
  88 static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
  89 {
  90         return 0;
  91 }
  92
  93 #endif
  94
  95 #ifdef CONFIG_USB_SUSPEND
  96
  97 extern void usb_autosuspend_device(struct usb_device *udev);
  98 extern int usb_autoresume_device(struct usb_device *udev);
  99 extern int usb_remote_wakeup(struct usb_device *dev);
 100 extern int usb_runtime_suspend(struct device *dev);
 101 extern int usb_runtime_resume(struct device *dev);
 102 extern int usb_runtime_idle(struct device *dev);
 103 extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable);
 104
 105 #else
 106
 107 #define usb_autosuspend_device(udev)            do {} while (0)
 108 static inline int usb_autoresume_device(struct usb_device *udev)
 109 {
 110         return 0;
 111 }
 112
 113 static inline int usb_remote_wakeup(struct usb_device *udev)
 114 {
 115         return 0;
 116 }
 117
 118 static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
 119 {
 120         return 0;
 121 }
 122 #endif
 123
 124 extern struct bus_type usb_bus_type;
 125 extern struct device_type usb_device_type;
 126 extern struct device_type usb_if_device_type;
 127 extern struct device_type usb_ep_device_type;
 128 extern struct device_type usb_port_device_type;
 129 extern struct usb_device_driver usb_generic_driver;
 130
 131 static inline int is_usb_device(const struct device *dev)
 132 {
 133         return dev->type == &usb_device_type;
 134 }
 135
 136 static inline int is_usb_interface(const struct device *dev)
 137 {
 138         return dev->type == &usb_if_device_type;
 139 }
 140
 141 static inline int is_usb_endpoint(const struct device *dev)
 142 {
 143         return dev->type == &usb_ep_device_type;
 144 }
 145
 146 static inline int is_usb_port(const struct device *dev)
 147 {
 148         return dev->type == &usb_port_device_type;
 149 }
 150
 151 /* Do the same for device drivers and interface drivers. */
 152
 153 static inline int is_usb_device_driver(struct device_driver *drv)
 154 {
 155         return container_of(drv, struct usbdrv_wrap, driver)->
 156                         for_devices;
 157 }
 158
 159 /* for labeling diagnostics */
 160 extern const char *usbcore_name;
 161
 162 /* sysfs stuff */
 163 extern const struct attribute_group *usb_device_groups[];
 164 extern const struct attribute_group *usb_interface_groups[];
 165
 166 /* usbfs stuff */
 167 extern struct mutex usbfs_mutex;
 168 extern struct usb_driver usbfs_driver;
 169 extern const struct file_operations usbfs_devices_fops;
 170 extern const struct file_operations usbdev_file_operations;
 171 extern void usbfs_conn_disc_event(void);
 172
 173 extern int usb_devio_init(void);
 174 extern void usb_devio_cleanup(void);
 175
 176 /* internal notify stuff */
 177 extern void usb_notify_add_device(struct usb_device *udev);
 178 extern void usb_notify_remove_device(struct usb_device *udev);
 179 extern void usb_notify_add_bus(struct usb_bus *ubus);
 180 extern void usb_notify_remove_bus(struct usb_bus *ubus);
 181 extern enum usb_port_connect_type
 182         usb_get_hub_port_connect_type(struct usb_device *hdev, int port1);
 183 extern void usb_set_hub_port_connect_type(struct usb_device *hdev, int port1,
 184         enum usb_port_connect_type type);
 185
 186 #ifdef CONFIG_ACPI
 187 extern int usb_acpi_register(void);
 188 extern void usb_acpi_unregister(void);
 189 extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev,
 190         int port1);
 191 #else
 192 static inline int usb_acpi_register(void) { return 0; };
 193 static inline void usb_acpi_unregister(void) { };
 194 #endif