usb.h revision 0458d5b4c9cc4ca0f62625d0144ddc4b4bc97a3c 
1/* Functions local to drivers/usb/core/ */
2
3extern int usb_create_sysfs_dev_files (struct usb_device *dev);
4extern void usb_remove_sysfs_dev_files (struct usb_device *dev);
5extern int usb_create_sysfs_intf_files (struct usb_interface *intf);
6extern void usb_remove_sysfs_intf_files (struct usb_interface *intf);
7extern int usb_create_ep_files(struct device *parent, struct usb_host_endpoint *endpoint,
8				struct usb_device *udev);
9extern void usb_remove_ep_files(struct usb_host_endpoint *endpoint);
10
11extern void usb_disable_endpoint (struct usb_device *dev, unsigned int epaddr);
12extern void usb_disable_interface (struct usb_device *dev,
13		struct usb_interface *intf);
14extern void usb_release_interface_cache(struct kref *ref);
15extern void usb_disable_device (struct usb_device *dev, int skip_ep0);
16extern void usb_detect_quirks(struct usb_device *udev);
17
18extern int usb_get_device_descriptor(struct usb_device *dev,
19		unsigned int size);
20extern char *usb_cache_string(struct usb_device *udev, int index);
21extern int usb_set_configuration(struct usb_device *dev, int configuration);
22
23extern void usb_kick_khubd(struct usb_device *dev);
24extern int usb_match_device(struct usb_device *dev,
25			    const struct usb_device_id *id);
26
27extern int  usb_hub_init(void);
28extern void usb_hub_cleanup(void);
29extern int usb_major_init(void);
30extern void usb_major_cleanup(void);
31extern int usb_host_init(void);
32extern void usb_host_cleanup(void);
33
34#ifdef	CONFIG_PM
35
36extern void usb_autosuspend_work(struct work_struct *work);
37extern int usb_port_suspend(struct usb_device *dev);
38extern int usb_port_resume(struct usb_device *dev);
39extern int usb_reset_suspended_device(struct usb_device *udev);
40extern int usb_external_suspend_device(struct usb_device *udev,
41		pm_message_t msg);
42extern int usb_external_resume_device(struct usb_device *udev);
43
44static inline void usb_pm_lock(struct usb_device *udev)
45{
46	mutex_lock_nested(&udev->pm_mutex, udev->level);
47}
48
49static inline void usb_pm_unlock(struct usb_device *udev)
50{
51	mutex_unlock(&udev->pm_mutex);
52}
53
54#else
55
56#define usb_port_suspend(dev)		0
57#define usb_port_resume(dev)		0
58static inline void usb_pm_lock(struct usb_device *udev) {}
59static inline void usb_pm_unlock(struct usb_device *udev) {}
60
61#endif
62
63#ifdef CONFIG_USB_SUSPEND
64
65extern void usb_autosuspend_device(struct usb_device *udev);
66extern void usb_try_autosuspend_device(struct usb_device *udev);
67extern int usb_autoresume_device(struct usb_device *udev);
68
69#else
70
71#define usb_autosuspend_device(udev)		do {} while (0)
72#define usb_try_autosuspend_device(udev)	do {} while (0)
73static inline int usb_autoresume_device(struct usb_device *udev)
74{
75	return 0;
76}
77
78#endif
79
80extern struct workqueue_struct *ksuspend_usb_wq;
81extern struct bus_type usb_bus_type;
82extern struct device_type usb_device_type;
83extern struct device_type usb_if_device_type;
84extern struct usb_device_driver usb_generic_driver;
85
86static inline int is_usb_device(const struct device *dev)
87{
88	return dev->type == &usb_device_type;
89}
90
91/* Do the same for device drivers and interface drivers. */
92
93static inline int is_usb_device_driver(struct device_driver *drv)
94{
95	return container_of(drv, struct usbdrv_wrap, driver)->
96			for_devices;
97}
98
99/* Interfaces and their "power state" are owned by usbcore */
100
101static inline void mark_active(struct usb_interface *f)
102{
103	f->is_active = 1;
104	f->dev.power.power_state.event = PM_EVENT_ON;
105}
106
107static inline void mark_quiesced(struct usb_interface *f)
108{
109	f->is_active = 0;
110	f->dev.power.power_state.event = PM_EVENT_SUSPEND;
111}
112
113static inline int is_active(const struct usb_interface *f)
114{
115	return f->is_active;
116}
117
118
119/* for labeling diagnostics */
120extern const char *usbcore_name;
121
122/* usbfs stuff */
123extern struct mutex usbfs_mutex;
124extern struct usb_driver usbfs_driver;
125extern const struct file_operations usbfs_devices_fops;
126extern const struct file_operations usbdev_file_operations;
127extern void usbfs_conn_disc_event(void);
128
129extern int usb_devio_init(void);
130extern void usb_devio_cleanup(void);
131
132struct dev_state {
133	struct list_head list;      /* state list */
134	struct usb_device *dev;
135	struct file *file;
136	spinlock_t lock;            /* protects the async urb lists */
137	struct list_head async_pending;
138	struct list_head async_completed;
139	wait_queue_head_t wait;     /* wake up if a request completed */
140	unsigned int discsignr;
141	struct pid *disc_pid;
142	uid_t disc_uid, disc_euid;
143	void __user *disccontext;
144	unsigned long ifclaimed;
145	u32 secid;
146};
147
148/* internal notify stuff */
149extern void usb_notify_add_device(struct usb_device *udev);
150extern void usb_notify_remove_device(struct usb_device *udev);
151extern void usb_notify_add_bus(struct usb_bus *ubus);
152extern void usb_notify_remove_bus(struct usb_bus *ubus);
153
154