usb.h revision 6b157c9bf3bace6eeb4a973da63923ef24995cce 
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_external_suspend_device(struct usb_device *udev,
40		pm_message_t msg);
41extern int usb_external_resume_device(struct usb_device *udev);
42
43static inline void usb_pm_lock(struct usb_device *udev)
44{
45	mutex_lock_nested(&udev->pm_mutex, udev->level);
46}
47
48static inline void usb_pm_unlock(struct usb_device *udev)
49{
50	mutex_unlock(&udev->pm_mutex);
51}
52
53#else
54
55#define usb_port_suspend(dev)		0
56#define usb_port_resume(dev)		0
57static inline void usb_pm_lock(struct usb_device *udev) {}
58static inline void usb_pm_unlock(struct usb_device *udev) {}
59
60#endif
61
62#ifdef CONFIG_USB_SUSPEND
63
64extern void usb_autosuspend_device(struct usb_device *udev);
65extern void usb_try_autosuspend_device(struct usb_device *udev);
66extern int usb_autoresume_device(struct usb_device *udev);
67
68#else
69
70#define usb_autosuspend_device(udev)		do {} while (0)
71#define usb_try_autosuspend_device(udev)	do {} while (0)
72static inline int usb_autoresume_device(struct usb_device *udev)
73{
74	return 0;
75}
76
77#endif
78
79extern struct workqueue_struct *ksuspend_usb_wq;
80extern struct bus_type usb_bus_type;
81extern struct usb_device_driver usb_generic_driver;
82
83/* Here's how we tell apart devices and interfaces.  Luckily there's
84 * no such thing as a platform USB device, so we can steal the use
85 * of the platform_data field. */
86
87static inline int is_usb_device(const struct device *dev)
88{
89	return dev->platform_data == &usb_generic_driver;
90}
91
92/* Do the same for device drivers and interface drivers. */
93
94static inline int is_usb_device_driver(struct device_driver *drv)
95{
96	return container_of(drv, struct usbdrv_wrap, driver)->
97			for_devices;
98}
99
100/* Interfaces and their "power state" are owned by usbcore */
101
102static inline void mark_active(struct usb_interface *f)
103{
104	f->is_active = 1;
105}
106
107static inline void mark_quiesced(struct usb_interface *f)
108{
109	f->is_active = 0;
110}
111
112static inline int is_active(const struct usb_interface *f)
113{
114	return f->is_active;
115}
116
117
118/* for labeling diagnostics */
119extern const char *usbcore_name;
120
121/* usbfs stuff */
122extern struct mutex usbfs_mutex;
123extern struct usb_driver usbfs_driver;
124extern const struct file_operations usbfs_devices_fops;
125extern const struct file_operations usbfs_device_file_operations;
126extern void usbfs_conn_disc_event(void);
127
128extern int usbdev_init(void);
129extern void usbdev_cleanup(void);
130
131struct dev_state {
132	struct list_head list;      /* state list */
133	struct usb_device *dev;
134	struct file *file;
135	spinlock_t lock;            /* protects the async urb lists */
136	struct list_head async_pending;
137	struct list_head async_completed;
138	wait_queue_head_t wait;     /* wake up if a request completed */
139	unsigned int discsignr;
140	struct pid *disc_pid;
141	uid_t disc_uid, disc_euid;
142	void __user *disccontext;
143	unsigned long ifclaimed;
144	u32 secid;
145};
146
147/* internal notify stuff */
148extern void usb_notify_add_device(struct usb_device *udev);
149extern void usb_notify_remove_device(struct usb_device *udev);
150extern void usb_notify_add_bus(struct usb_bus *ubus);
151extern void usb_notify_remove_bus(struct usb_bus *ubus);
152
153