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 int usb_device_supports_lpm(struct usb_device *udev);
  39 extern char *usb_cache_string(struct usb_device *udev, int index);
  40 extern int usb_set_configuration(struct usb_device *dev, int configuration);
  41 extern int usb_choose_configuration(struct usb_device *udev);
  42
  43 static inline unsigned usb_get_max_power(struct usb_device *udev,
  44                 struct usb_host_config *c)
  45 {
  46         /* SuperSpeed power is in 8 mA units; others are in 2 mA units */
  47         unsigned mul = (udev->speed == USB_SPEED_SUPER ? 8 : 2);
  48
  49         return c->desc.bMaxPower * mul;
  50 }
  51
  52 extern void usb_kick_khubd(struct usb_device *dev);
  53 extern int usb_match_one_id_intf(struct usb_device *dev,
  54                                  struct usb_host_interface *intf,
  55                                  const struct usb_device_id *id);
  56 extern int usb_match_device(struct usb_device *dev,
  57                             const struct usb_device_id *id);
  58 extern void usb_forced_unbind_intf(struct usb_interface *intf);
  59 extern void usb_rebind_intf(struct usb_interface *intf);
  60
  61 extern int usb_hub_claim_port(struct usb_device *hdev, unsigned port,
  62                 struct dev_state *owner);
  63 extern int usb_hub_release_port(struct usb_device *hdev, unsigned port,
  64                 struct dev_state *owner);
  65 extern void usb_hub_release_all_ports(struct usb_device *hdev,
  66                 struct dev_state *owner);
  67 extern bool usb_device_is_owned(struct usb_device *udev);
  68
  69 extern int  usb_hub_init(void);
  70 extern void usb_hub_cleanup(void);
  71 extern int usb_major_init(void);
  72 extern void usb_major_cleanup(void);
  73
  74 #ifdef  CONFIG_PM
  75
  76 extern int usb_suspend(struct device *dev, pm_message_t msg);
  77 extern int usb_resume(struct device *dev, pm_message_t msg);
  78 extern int usb_resume_complete(struct device *dev);
  79
  80 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
  81 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
  82
  83 #else
  84
  85 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
  86 {
  87         return 0;
  88 }
  89
  90 static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
  91 {
  92         return 0;
  93 }
  94
  95 #endif
  96
  97 #ifdef CONFIG_PM_RUNTIME
  98
  99 extern void usb_autosuspend_device(struct usb_device *udev);
 100 extern int usb_autoresume_device(struct usb_device *udev);
 101 extern int usb_remote_wakeup(struct usb_device *dev);
 102 extern int usb_runtime_suspend(struct device *dev);
 103 extern int usb_runtime_resume(struct device *dev);
 104 extern int usb_runtime_idle(struct device *dev);
 105 extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable);
 106
 107 #else
 108
 109 #define usb_autosuspend_device(udev)            do {} while (0)
 110 static inline int usb_autoresume_device(struct usb_device *udev)
 111 {
 112         return 0;
 113 }
 114
 115 static inline int usb_remote_wakeup(struct usb_device *udev)
 116 {
 117         return 0;
 118 }
 119
 120 static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
 121 {
 122         return 0;
 123 }
 124 #endif
 125
 126 extern struct bus_type usb_bus_type;
 127 extern struct device_type usb_device_type;
 128 extern struct device_type usb_if_device_type;
 129 extern struct device_type usb_ep_device_type;
 130 extern struct device_type usb_port_device_type;
 131 extern struct usb_device_driver usb_generic_driver;
 132
 133 static inline int is_usb_device(const struct device *dev)
 134 {
 135         return dev->type == &usb_device_type;
 136 }
 137
 138 static inline int is_usb_interface(const struct device *dev)
 139 {
 140         return dev->type == &usb_if_device_type;
 141 }
 142
 143 static inline int is_usb_endpoint(const struct device *dev)
 144 {
 145         return dev->type == &usb_ep_device_type;
 146 }
 147
 148 static inline int is_usb_port(const struct device *dev)
 149 {
 150         return dev->type == &usb_port_device_type;
 151 }
 152
 153 /* Do the same for device drivers and interface drivers. */
 154
 155 static inline int is_usb_device_driver(struct device_driver *drv)
 156 {
 157         return container_of(drv, struct usbdrv_wrap, driver)->
 158                         for_devices;
 159 }
 160
 161 /* for labeling diagnostics */
 162 extern const char *usbcore_name;
 163
 164 /* sysfs stuff */
 165 extern const struct attribute_group *usb_device_groups[];
 166 extern const struct attribute_group *usb_interface_groups[];
 167
 168 /* usbfs stuff */
 169 extern struct mutex usbfs_mutex;
 170 extern struct usb_driver usbfs_driver;
 171 extern const struct file_operations usbfs_devices_fops;
 172 extern const struct file_operations usbdev_file_operations;
 173 extern void usbfs_conn_disc_event(void);
 174
 175 extern int usb_devio_init(void);
 176 extern void usb_devio_cleanup(void);
 177
 178 /* internal notify stuff */
 179 extern void usb_notify_add_device(struct usb_device *udev);
 180 extern void usb_notify_remove_device(struct usb_device *udev);
 181 extern void usb_notify_add_bus(struct usb_bus *ubus);
 182 extern void usb_notify_remove_bus(struct usb_bus *ubus);
 183 extern enum usb_port_connect_type
 184         usb_get_hub_port_connect_type(struct usb_device *hdev, int port1);
 185 extern void usb_set_hub_port_connect_type(struct usb_device *hdev, int port1,
 186         enum usb_port_connect_type type);
 187 extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev,
 188                 struct usb_hub_descriptor *desc);
 189
 190 #ifdef CONFIG_ACPI
 191 extern int usb_acpi_register(void);
 192 extern void usb_acpi_unregister(void);
 193 extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev,
 194         int port1);
 195 #else
 196 static inline int usb_acpi_register(void) { return 0; };
 197 static inline void usb_acpi_unregister(void) { };
 198 #endif