usb.h revision 54515fe528d8c6f9bfaf7d0b9fffb908deecad78 
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
55static inline int usb_port_suspend(struct usb_device *udev)
56{
57	return 0;
58}
59
60static inline int usb_port_resume(struct usb_device *udev)
61{
62	return 0;
63}
64
65static inline void usb_pm_lock(struct usb_device *udev) {}
66static inline void usb_pm_unlock(struct usb_device *udev) {}
67
68#endif
69
70#ifdef CONFIG_USB_SUSPEND
71
72extern void usb_autosuspend_device(struct usb_device *udev);
73extern void usb_try_autosuspend_device(struct usb_device *udev);
74extern int usb_autoresume_device(struct usb_device *udev);
75
76#else
77
78#define usb_autosuspend_device(udev)		do {} while (0)
79#define usb_try_autosuspend_device(udev)	do {} while (0)
80static inline int usb_autoresume_device(struct usb_device *udev)
81{
82	return 0;
83}
84
85#endif
86
87extern struct workqueue_struct *ksuspend_usb_wq;
88extern struct bus_type usb_bus_type;
89extern struct device_type usb_device_type;
90extern struct device_type usb_if_device_type;
91extern struct usb_device_driver usb_generic_driver;
92
93static inline int is_usb_device(const struct device *dev)
94{
95	return dev->type == &usb_device_type;
96}
97
98/* Do the same for device drivers and interface drivers. */
99
100static inline int is_usb_device_driver(struct device_driver *drv)
101{
102	return container_of(drv, struct usbdrv_wrap, driver)->
103			for_devices;
104}
105
106/* Interfaces and their "power state" are owned by usbcore */
107
108static inline void mark_active(struct usb_interface *f)
109{
110	f->is_active = 1;
111	f->dev.power.power_state.event = PM_EVENT_ON;
112}
113
114static inline void mark_quiesced(struct usb_interface *f)
115{
116	f->is_active = 0;
117	f->dev.power.power_state.event = PM_EVENT_SUSPEND;
118}
119
120static inline int is_active(const struct usb_interface *f)
121{
122	return f->is_active;
123}
124
125
126/* for labeling diagnostics */
127extern const char *usbcore_name;
128
129/* usbfs stuff */
130extern struct mutex usbfs_mutex;
131extern struct usb_driver usbfs_driver;
132extern const struct file_operations usbfs_devices_fops;
133extern const struct file_operations usbdev_file_operations;
134extern void usbfs_conn_disc_event(void);
135
136extern int usb_devio_init(void);
137extern void usb_devio_cleanup(void);
138
139struct dev_state {
140	struct list_head list;      /* state list */
141	struct usb_device *dev;
142	struct file *file;
143	spinlock_t lock;            /* protects the async urb lists */
144	struct list_head async_pending;
145	struct list_head async_completed;
146	wait_queue_head_t wait;     /* wake up if a request completed */
147	unsigned int discsignr;
148	struct pid *disc_pid;
149	uid_t disc_uid, disc_euid;
150	void __user *disccontext;
151	unsigned long ifclaimed;
152	u32 secid;
153};
154
155/* internal notify stuff */
156extern void usb_notify_add_device(struct usb_device *udev);
157extern void usb_notify_remove_device(struct usb_device *udev);
158extern void usb_notify_add_bus(struct usb_bus *ubus);
159extern void usb_notify_remove_bus(struct usb_bus *ubus);
160
161