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linux
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usb
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core
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usb.h
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152 lines (120 loc) · 4.53 KB
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linux
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usb.h
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/* Functions local to drivers/usb/core/ */ extern int usb_create_sysfs_dev_files (struct usb_device *dev); extern void usb_remove_sysfs_dev_files (struct usb_device *dev); extern int usb_create_sysfs_intf_files (struct usb_interface *intf); extern void usb_remove_sysfs_intf_files (struct usb_interface *intf); extern int usb_create_ep_files(struct device *parent, struct usb_host_endpoint *endpoint, struct usb_device *udev); extern void usb_remove_ep_files(struct usb_host_endpoint *endpoint); extern void usb_disable_endpoint (struct usb_device *dev, unsigned int epaddr); extern void usb_disable_interface (struct usb_device *dev, struct usb_interface *intf); extern void usb_release_interface_cache(struct kref *ref); extern void usb_disable_device (struct usb_device *dev, int skip_ep0); extern void usb_detect_quirks(struct usb_device *udev); extern int usb_get_device_descriptor(struct usb_device *dev, unsigned int size); extern char *usb_cache_string(struct usb_device *udev, int index); extern int usb_set_configuration(struct usb_device *dev, int configuration); extern void usb_kick_khubd(struct usb_device *dev); extern int usb_match_device(struct usb_device *dev, const struct usb_device_id *id); extern int usb_hub_init(void); extern void usb_hub_cleanup(void); extern int usb_major_init(void); extern void usb_major_cleanup(void); extern int usb_host_init(void); extern void usb_host_cleanup(void); #ifdef CONFIG_PM extern void usb_autosuspend_work(struct work_struct *work); extern int usb_port_suspend(struct usb_device *dev); extern int usb_port_resume(struct usb_device *dev); extern int usb_external_suspend_device(struct usb_device *udev, pm_message_t msg); extern int usb_external_resume_device(struct usb_device *udev); static inline void usb_pm_lock(struct usb_device *udev) { mutex_lock_nested(&udev->pm_mutex, udev->level); } static inline void usb_pm_unlock(struct usb_device *udev) { mutex_unlock(&udev->pm_mutex); } #else #define usb_port_suspend(dev) 0 #define usb_port_resume(dev) 0 static inline void usb_pm_lock(struct usb_device *udev) {} static inline void usb_pm_unlock(struct usb_device *udev) {} #endif #ifdef CONFIG_USB_SUSPEND extern void usb_autosuspend_device(struct usb_device *udev); extern void usb_try_autosuspend_device(struct usb_device *udev); extern int usb_autoresume_device(struct usb_device *udev); #else #define usb_autosuspend_device(udev) do {} while (0) #define usb_try_autosuspend_device(udev) do {} while (0) static inline int usb_autoresume_device(struct usb_device *udev) { return 0; } #endif extern struct workqueue_struct *ksuspend_usb_wq; extern struct bus_type usb_bus_type; extern struct device_type usb_device_type; extern struct device_type usb_if_device_type; extern struct usb_device_driver usb_generic_driver; static inline int is_usb_device(const struct device *dev) { return dev->type == &usb_device_type; } /* Do the same for device drivers and interface drivers. */ static inline int is_usb_device_driver(struct device_driver *drv) { return container_of(drv, struct usbdrv_wrap, driver)-> for_devices; } /* Interfaces and their "power state" are owned by usbcore */ static inline void mark_active(struct usb_interface *f) { f->is_active = 1; f->dev.power.power_state.event = PM_EVENT_ON; } static inline void mark_quiesced(struct usb_interface *f) { f->is_active = 0; f->dev.power.power_state.event = PM_EVENT_SUSPEND; } static inline int is_active(const struct usb_interface *f) { return f->is_active; } /* for labeling diagnostics */ extern const char *usbcore_name; /* usbfs stuff */ extern struct mutex usbfs_mutex; extern struct usb_driver usbfs_driver; extern const struct file_operations usbfs_devices_fops; extern const struct file_operations usbdev_file_operations; extern void usbfs_conn_disc_event(void); extern int usb_devio_init(void); extern void usb_devio_cleanup(void); struct dev_state { struct list_head list; /* state list */ struct usb_device *dev; struct file *file; spinlock_t lock; /* protects the async urb lists */ struct list_head async_pending; struct list_head async_completed; wait_queue_head_t wait; /* wake up if a request completed */ unsigned int discsignr; struct pid *disc_pid; uid_t disc_uid, disc_euid; void __user *disccontext; unsigned long ifclaimed; u32 secid; }; /* internal notify stuff */ extern void usb_notify_add_device(struct usb_device *udev); extern void usb_notify_remove_device(struct usb_device *udev); extern void usb_notify_add_bus(struct usb_bus *ubus); extern void usb_notify_remove_bus(struct usb_bus *ubus);
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