drivers/usb/core/usb.h

   1 #include <linux/pm.h>
   2 #include <linux/acpi.h>
   3
   4 struct usb_hub_descriptor;
   5 struct 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_khubd(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 int usb_hub_claim_port(struct usb_device *hdev, unsigned port,
  61                 struct dev_state *owner);
  62 extern int usb_hub_release_port(struct usb_device *hdev, unsigned port,
  63                 struct dev_state *owner);
  64 extern void usb_hub_release_all_ports(struct usb_device *hdev,
  65                 struct dev_state *owner);
  66 extern bool usb_device_is_owned(struct usb_device *udev);
  67
  68 extern int  usb_hub_init(void);
  69 extern void usb_hub_cleanup(void);
  70 extern int usb_major_init(void);
  71 extern void usb_major_cleanup(void);
  72
  73 #ifdef  CONFIG_PM
  74
  75 extern int usb_suspend(struct device *dev, pm_message_t msg);
  76 extern int usb_resume(struct device *dev, pm_message_t msg);
  77 extern int usb_resume_complete(struct device *dev);
  78
  79 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
  80 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
  81
  82 #else
  83
  84 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
  85 {
  86         return 0;
  87 }
  88
  89 static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
  90 {
  91         return 0;
  92 }
  93
  94 #endif
  95
  96 #ifdef CONFIG_PM_RUNTIME
  97
  98 extern void usb_autosuspend_device(struct usb_device *udev);
  99 extern int usb_autoresume_device(struct usb_device *udev);
 100 extern int usb_remote_wakeup(struct usb_device *dev);
 101 extern int usb_runtime_suspend(struct device *dev);
 102 extern int usb_runtime_resume(struct device *dev);
 103 extern int usb_runtime_idle(struct device *dev);
 104 extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable);
 105
 106 #else
 107
 108 #define usb_autosuspend_device(udev)            do {} while (0)
 109 static inline int usb_autoresume_device(struct usb_device *udev)
 110 {
 111         return 0;
 112 }
 113
 114 static inline int usb_remote_wakeup(struct usb_device *udev)
 115 {
 116         return 0;
 117 }
 118
 119 static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
 120 {
 121         return 0;
 122 }
 123 #endif
 124
 125 extern struct bus_type usb_bus_type;
 126 extern struct device_type usb_device_type;
 127 extern struct device_type usb_if_device_type;
 128 extern struct device_type usb_ep_device_type;
 129 extern struct device_type usb_port_device_type;
 130 extern struct usb_device_driver usb_generic_driver;
 131
 132 static inline int is_usb_device(const struct device *dev)
 133 {
 134         return dev->type == &usb_device_type;
 135 }
 136
 137 static inline int is_usb_interface(const struct device *dev)
 138 {
 139         return dev->type == &usb_if_device_type;
 140 }
 141
 142 static inline int is_usb_endpoint(const struct device *dev)
 143 {
 144         return dev->type == &usb_ep_device_type;
 145 }
 146
 147 static inline int is_usb_port(const struct device *dev)
 148 {
 149         return dev->type == &usb_port_device_type;
 150 }
 151
 152 /* Do the same for device drivers and interface drivers. */
 153
 154 static inline int is_usb_device_driver(struct device_driver *drv)
 155 {
 156         return container_of(drv, struct usbdrv_wrap, driver)->
 157                         for_devices;
 158 }
 159
 160 /* for labeling diagnostics */
 161 extern const char *usbcore_name;
 162
 163 /* sysfs stuff */
 164 extern const struct attribute_group *usb_device_groups[];
 165 extern const struct attribute_group *usb_interface_groups[];
 166
 167 /* usbfs stuff */
 168 extern struct mutex usbfs_mutex;
 169 extern struct usb_driver usbfs_driver;
 170 extern const struct file_operations usbfs_devices_fops;
 171 extern const struct file_operations usbdev_file_operations;
 172 extern void usbfs_conn_disc_event(void);
 173
 174 extern int usb_devio_init(void);
 175 extern void usb_devio_cleanup(void);
 176
 177 /* internal notify stuff */
 178 extern void usb_notify_add_device(struct usb_device *udev);
 179 extern void usb_notify_remove_device(struct usb_device *udev);
 180 extern void usb_notify_add_bus(struct usb_bus *ubus);
 181 extern void usb_notify_remove_bus(struct usb_bus *ubus);
 182 extern enum usb_port_connect_type
 183         usb_get_hub_port_connect_type(struct usb_device *hdev, int port1);
 184 extern void usb_set_hub_port_connect_type(struct usb_device *hdev, int port1,
 185         enum usb_port_connect_type type);
 186 extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev,
 187                 struct usb_hub_descriptor *desc);
 188
 189 #ifdef CONFIG_ACPI
 190 extern int usb_acpi_register(void);
 191 extern void usb_acpi_unregister(void);
 192 extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev,
 193         int port1);
 194 #else
 195 static inline int usb_acpi_register(void) { return 0; };
 196 static inline void usb_acpi_unregister(void) { };
 197 #endif