usb.h revision bdd016ba64d909329cb4bacacc8443901c00e112 
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_enable_endpoint(struct usb_device *dev,
12		struct usb_host_endpoint *ep);
13extern void usb_disable_endpoint (struct usb_device *dev, unsigned int epaddr);
14extern void usb_disable_interface (struct usb_device *dev,
15		struct usb_interface *intf);
16extern void usb_release_interface_cache(struct kref *ref);
17extern void usb_disable_device (struct usb_device *dev, int skip_ep0);
18extern void usb_detect_quirks(struct usb_device *udev);
19
20extern int usb_get_device_descriptor(struct usb_device *dev,
21		unsigned int size);
22extern char *usb_cache_string(struct usb_device *udev, int index);
23extern int usb_set_configuration(struct usb_device *dev, int configuration);
24
25extern void usb_kick_khubd(struct usb_device *dev);
26extern int usb_match_device(struct usb_device *dev,
27			    const struct usb_device_id *id);
28
29extern int  usb_hub_init(void);
30extern void usb_hub_cleanup(void);
31extern int usb_major_init(void);
32extern void usb_major_cleanup(void);
33extern int usb_host_init(void);
34extern void usb_host_cleanup(void);
35
36#ifdef	CONFIG_PM
37
38extern void usb_autosuspend_work(struct work_struct *work);
39extern int usb_port_suspend(struct usb_device *dev);
40extern int usb_port_resume(struct usb_device *dev);
41extern int usb_external_suspend_device(struct usb_device *udev,
42		pm_message_t msg);
43extern int usb_external_resume_device(struct usb_device *udev);
44
45static inline void usb_pm_lock(struct usb_device *udev)
46{
47	mutex_lock_nested(&udev->pm_mutex, udev->level);
48}
49
50static inline void usb_pm_unlock(struct usb_device *udev)
51{
52	mutex_unlock(&udev->pm_mutex);
53}
54
55#else
56
57static inline int usb_port_suspend(struct usb_device *udev)
58{
59	return 0;
60}
61
62static inline int usb_port_resume(struct usb_device *udev)
63{
64	return 0;
65}
66
67static inline void usb_pm_lock(struct usb_device *udev) {}
68static inline void usb_pm_unlock(struct usb_device *udev) {}
69
70#endif
71
72#ifdef CONFIG_USB_SUSPEND
73
74extern void usb_autosuspend_device(struct usb_device *udev);
75extern void usb_try_autosuspend_device(struct usb_device *udev);
76extern int usb_autoresume_device(struct usb_device *udev);
77
78#else
79
80#define usb_autosuspend_device(udev)		do {} while (0)
81#define usb_try_autosuspend_device(udev)	do {} while (0)
82static inline int usb_autoresume_device(struct usb_device *udev)
83{
84	return 0;
85}
86
87#endif
88
89extern struct workqueue_struct *ksuspend_usb_wq;
90extern struct bus_type usb_bus_type;
91extern struct device_type usb_device_type;
92extern struct device_type usb_if_device_type;
93extern struct usb_device_driver usb_generic_driver;
94
95static inline int is_usb_device(const struct device *dev)
96{
97	return dev->type == &usb_device_type;
98}
99
100/* Do the same for device drivers and interface drivers. */
101
102static inline int is_usb_device_driver(struct device_driver *drv)
103{
104	return container_of(drv, struct usbdrv_wrap, driver)->
105			for_devices;
106}
107
108/* Interfaces and their "power state" are owned by usbcore */
109
110static inline void mark_active(struct usb_interface *f)
111{
112	f->is_active = 1;
113	f->dev.power.power_state.event = PM_EVENT_ON;
114}
115
116static inline void mark_quiesced(struct usb_interface *f)
117{
118	f->is_active = 0;
119	f->dev.power.power_state.event = PM_EVENT_SUSPEND;
120}
121
122static inline int is_active(const struct usb_interface *f)
123{
124	return f->is_active;
125}
126
127
128/* for labeling diagnostics */
129extern const char *usbcore_name;
130
131/* usbfs stuff */
132extern struct mutex usbfs_mutex;
133extern struct usb_driver usbfs_driver;
134extern const struct file_operations usbfs_devices_fops;
135extern const struct file_operations usbdev_file_operations;
136extern void usbfs_conn_disc_event(void);
137
138extern int usb_devio_init(void);
139extern void usb_devio_cleanup(void);
140
141struct dev_state {
142	struct list_head list;      /* state list */
143	struct usb_device *dev;
144	struct file *file;
145	spinlock_t lock;            /* protects the async urb lists */
146	struct list_head async_pending;
147	struct list_head async_completed;
148	wait_queue_head_t wait;     /* wake up if a request completed */
149	unsigned int discsignr;
150	struct pid *disc_pid;
151	uid_t disc_uid, disc_euid;
152	void __user *disccontext;
153	unsigned long ifclaimed;
154	u32 secid;
155};
156
157/* internal notify stuff */
158extern void usb_notify_add_device(struct usb_device *udev);
159extern void usb_notify_remove_device(struct usb_device *udev);
160extern void usb_notify_add_bus(struct usb_bus *ubus);
161extern void usb_notify_remove_bus(struct usb_bus *ubus);
162
163