drivers/usb/core/usb.h

   1 #include <linux/pm.h>
   2 #include <linux/acpi.h>
   3
   4 struct usb_hub_descriptor;
   5 struct usb_dev_state;
   6
   7 /* Functions local to drivers/usb/core/ */
   8
   9 extern int usb_create_sysfs_dev_files(struct usb_device *dev);
  10 extern void usb_remove_sysfs_dev_files(struct usb_device *dev);
  11 extern void usb_create_sysfs_intf_files(struct usb_interface *intf);
  12 extern void usb_remove_sysfs_intf_files(struct usb_interface *intf);
  13 extern int usb_create_ep_devs(struct device *parent,
  14                                 struct usb_host_endpoint *endpoint,
  15                                 struct usb_device *udev);
  16 extern void usb_remove_ep_devs(struct usb_host_endpoint *endpoint);
  17
  18 extern void usb_enable_endpoint(struct usb_device *dev,
  19                 struct usb_host_endpoint *ep, bool reset_toggle);
  20 extern void usb_enable_interface(struct usb_device *dev,
  21                 struct usb_interface *intf, bool reset_toggles);
  22 extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr,
  23                 bool reset_hardware);
  24 extern void usb_disable_interface(struct usb_device *dev,
  25                 struct usb_interface *intf, bool reset_hardware);
  26 extern void usb_release_interface_cache(struct kref *ref);
  27 extern void usb_disable_device(struct usb_device *dev, int skip_ep0);
  28 extern int usb_deauthorize_device(struct usb_device *);
  29 extern int usb_authorize_device(struct usb_device *);
  30 extern void usb_detect_quirks(struct usb_device *udev);
  31 extern void usb_detect_interface_quirks(struct usb_device *udev);
  32 extern int usb_remove_device(struct usb_device *udev);
  33
  34 extern int usb_get_device_descriptor(struct usb_device *dev,
  35                 unsigned int size);
  36 extern int usb_get_bos_descriptor(struct usb_device *dev);
  37 extern void usb_release_bos_descriptor(struct usb_device *dev);
  38 extern char *usb_cache_string(struct usb_device *udev, int index);
  39 extern int usb_set_configuration(struct usb_device *dev, int configuration);
  40 extern int usb_choose_configuration(struct usb_device *udev);
  41
  42 static inline unsigned usb_get_max_power(struct usb_device *udev,
  43                 struct usb_host_config *c)
  44 {
  45         /* SuperSpeed power is in 8 mA units; others are in 2 mA units */
  46         unsigned mul = (udev->speed == USB_SPEED_SUPER ? 8 : 2);
  47
  48         return c->desc.bMaxPower * mul;
  49 }
  50
  51 extern void usb_kick_hub_wq(struct usb_device *dev);
  52 extern int usb_match_one_id_intf(struct usb_device *dev,
  53                                  struct usb_host_interface *intf,
  54                                  const struct usb_device_id *id);
  55 extern int usb_match_device(struct usb_device *dev,
  56                             const struct usb_device_id *id);
  57 extern void usb_forced_unbind_intf(struct usb_interface *intf);
  58 extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev);
  59
  60 extern void usb_hub_release_all_ports(struct usb_device *hdev,
  61                 struct usb_dev_state *owner);
  62 extern bool usb_device_is_owned(struct usb_device *udev);
  63
  64 extern int  usb_hub_init(void);
  65 extern void usb_hub_cleanup(void);
  66 extern int usb_major_init(void);
  67 extern void usb_major_cleanup(void);
  68 extern int usb_device_supports_lpm(struct usb_device *udev);
  69
  70 #ifdef  CONFIG_PM
  71
  72 extern int usb_suspend(struct device *dev, pm_message_t msg);
  73 extern int usb_resume(struct device *dev, pm_message_t msg);
  74 extern int usb_resume_complete(struct device *dev);
  75
  76 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
  77 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
  78
  79 extern void usb_autosuspend_device(struct usb_device *udev);
  80 extern int usb_autoresume_device(struct usb_device *udev);
  81 extern int usb_remote_wakeup(struct usb_device *dev);
  82 extern int usb_runtime_suspend(struct device *dev);
  83 extern int usb_runtime_resume(struct device *dev);
  84 extern int usb_runtime_idle(struct device *dev);
  85 extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable);
  86
  87 #else
  88
  89 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
  90 {
  91         return 0;
  92 }
  93
  94 static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
  95 {
  96         return 0;
  97 }
  98
  99 #define usb_autosuspend_device(udev)            do {} while (0)
 100 static inline int usb_autoresume_device(struct usb_device *udev)
 101 {
 102         return 0;
 103 }
 104
 105 static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
 106 {
 107         return 0;
 108 }
 109
 110 #endif
 111
 112 extern struct bus_type usb_bus_type;
 113 extern struct mutex usb_port_peer_mutex;
 114 extern struct device_type usb_device_type;
 115 extern struct device_type usb_if_device_type;
 116 extern struct device_type usb_ep_device_type;
 117 extern struct device_type usb_port_device_type;
 118 extern struct usb_device_driver usb_generic_driver;
 119
 120 static inline int is_usb_device(const struct device *dev)
 121 {
 122         return dev->type == &usb_device_type;
 123 }
 124
 125 static inline int is_usb_interface(const struct device *dev)
 126 {
 127         return dev->type == &usb_if_device_type;
 128 }
 129
 130 static inline int is_usb_endpoint(const struct device *dev)
 131 {
 132         return dev->type == &usb_ep_device_type;
 133 }
 134
 135 static inline int is_usb_port(const struct device *dev)
 136 {
 137         return dev->type == &usb_port_device_type;
 138 }
 139
 140 /* Do the same for device drivers and interface drivers. */
 141
 142 static inline int is_usb_device_driver(struct device_driver *drv)
 143 {
 144         return container_of(drv, struct usbdrv_wrap, driver)->
 145                         for_devices;
 146 }
 147
 148 /* for labeling diagnostics */
 149 extern const char *usbcore_name;
 150
 151 /* sysfs stuff */
 152 extern const struct attribute_group *usb_device_groups[];
 153 extern const struct attribute_group *usb_interface_groups[];
 154
 155 /* usbfs stuff */
 156 extern struct mutex usbfs_mutex;
 157 extern struct usb_driver usbfs_driver;
 158 extern const struct file_operations usbfs_devices_fops;
 159 extern const struct file_operations usbdev_file_operations;
 160 extern void usbfs_conn_disc_event(void);
 161
 162 extern int usb_devio_init(void);
 163 extern void usb_devio_cleanup(void);
 164
 165 /*
 166  * Firmware specific cookie identifying a port's location. '0' == no location
 167  * data available
 168  */
 169 typedef u32 usb_port_location_t;
 170
 171 /* internal notify stuff */
 172 extern void usb_notify_add_device(struct usb_device *udev);
 173 extern void usb_notify_remove_device(struct usb_device *udev);
 174 extern void usb_notify_add_bus(struct usb_bus *ubus);
 175 extern void usb_notify_remove_bus(struct usb_bus *ubus);
 176 extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev,
 177                 struct usb_hub_descriptor *desc);
 178
 179 #ifdef CONFIG_ACPI
 180 extern int usb_acpi_register(void);
 181 extern void usb_acpi_unregister(void);
 182 extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev,
 183         int port1);
 184 #else
 185 static inline int usb_acpi_register(void) { return 0; };
 186 static inline void usb_acpi_unregister(void) { };
 187 #endif