usb.h revision 253e05724f9230910344357b1142ad8642ff9f5a 
1#include <linux/pm.h>
2
3/* Functions local to drivers/usb/core/ */
4
5extern int usb_create_sysfs_dev_files(struct usb_device *dev);
6extern void usb_remove_sysfs_dev_files(struct usb_device *dev);
7extern int usb_create_sysfs_intf_files(struct usb_interface *intf);
8extern void usb_remove_sysfs_intf_files(struct usb_interface *intf);
9extern int usb_create_ep_devs(struct device *parent,
10				struct usb_host_endpoint *endpoint,
11				struct usb_device *udev);
12extern void usb_remove_ep_devs(struct usb_host_endpoint *endpoint);
13
14extern void usb_enable_endpoint(struct usb_device *dev,
15		struct usb_host_endpoint *ep, bool reset_toggle);
16extern void usb_enable_interface(struct usb_device *dev,
17		struct usb_interface *intf, bool reset_toggles);
18extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr,
19		bool reset_hardware);
20extern void usb_disable_interface(struct usb_device *dev,
21		struct usb_interface *intf, bool reset_hardware);
22extern void usb_release_interface_cache(struct kref *ref);
23extern void usb_disable_device(struct usb_device *dev, int skip_ep0);
24extern int usb_deauthorize_device(struct usb_device *);
25extern int usb_authorize_device(struct usb_device *);
26extern void usb_detect_quirks(struct usb_device *udev);
27extern int usb_remove_device(struct usb_device *udev);
28
29extern int usb_get_device_descriptor(struct usb_device *dev,
30		unsigned int size);
31extern char *usb_cache_string(struct usb_device *udev, int index);
32extern int usb_set_configuration(struct usb_device *dev, int configuration);
33extern int usb_choose_configuration(struct usb_device *udev);
34
35extern void usb_kick_khubd(struct usb_device *dev);
36extern int usb_match_device(struct usb_device *dev,
37			    const struct usb_device_id *id);
38extern void usb_forced_unbind_intf(struct usb_interface *intf);
39extern void usb_rebind_intf(struct usb_interface *intf);
40
41extern int usb_hub_claim_port(struct usb_device *hdev, unsigned port,
42		void *owner);
43extern int usb_hub_release_port(struct usb_device *hdev, unsigned port,
44		void *owner);
45extern void usb_hub_release_all_ports(struct usb_device *hdev, void *owner);
46extern bool usb_device_is_owned(struct usb_device *udev);
47
48extern int  usb_hub_init(void);
49extern void usb_hub_cleanup(void);
50extern int usb_major_init(void);
51extern void usb_major_cleanup(void);
52
53#ifdef	CONFIG_PM
54
55extern int usb_suspend(struct device *dev, pm_message_t msg);
56extern int usb_resume(struct device *dev, pm_message_t msg);
57
58extern void usb_autosuspend_work(struct work_struct *work);
59extern void usb_autoresume_work(struct work_struct *work);
60extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
61extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
62extern int usb_external_suspend_device(struct usb_device *udev,
63		pm_message_t msg);
64extern int usb_external_resume_device(struct usb_device *udev,
65		pm_message_t msg);
66
67static inline void usb_pm_lock(struct usb_device *udev)
68{
69	mutex_lock_nested(&udev->pm_mutex, udev->level);
70}
71
72static inline void usb_pm_unlock(struct usb_device *udev)
73{
74	mutex_unlock(&udev->pm_mutex);
75}
76
77#else
78
79static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
80{
81	return 0;
82}
83
84static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
85{
86	return 0;
87}
88
89static inline void usb_pm_lock(struct usb_device *udev) {}
90static inline void usb_pm_unlock(struct usb_device *udev) {}
91
92#endif
93
94#ifdef CONFIG_USB_SUSPEND
95
96extern void usb_autosuspend_device(struct usb_device *udev);
97extern void usb_try_autosuspend_device(struct usb_device *udev);
98extern int usb_autoresume_device(struct usb_device *udev);
99
100#else
101
102#define usb_autosuspend_device(udev)		do {} while (0)
103#define usb_try_autosuspend_device(udev)	do {} while (0)
104static inline int usb_autoresume_device(struct usb_device *udev)
105{
106	return 0;
107}
108
109#endif
110
111extern struct workqueue_struct *ksuspend_usb_wq;
112extern struct bus_type usb_bus_type;
113extern struct device_type usb_device_type;
114extern struct device_type usb_if_device_type;
115extern struct device_type usb_ep_device_type;
116extern struct usb_device_driver usb_generic_driver;
117
118static inline int is_usb_device(const struct device *dev)
119{
120	return dev->type == &usb_device_type;
121}
122
123static inline int is_usb_interface(const struct device *dev)
124{
125	return dev->type == &usb_if_device_type;
126}
127
128static inline int is_usb_endpoint(const struct device *dev)
129{
130	return dev->type == &usb_ep_device_type;
131}
132
133/* Do the same for device drivers and interface drivers. */
134
135static inline int is_usb_device_driver(struct device_driver *drv)
136{
137	return container_of(drv, struct usbdrv_wrap, driver)->
138			for_devices;
139}
140
141/* Interfaces and their "power state" are owned by usbcore */
142
143static inline void mark_active(struct usb_interface *f)
144{
145	f->is_active = 1;
146}
147
148static inline void mark_quiesced(struct usb_interface *f)
149{
150	f->is_active = 0;
151}
152
153static inline int is_active(const struct usb_interface *f)
154{
155	return f->is_active;
156}
157
158
159/* for labeling diagnostics */
160extern const char *usbcore_name;
161
162/* sysfs stuff */
163extern const struct attribute_group *usb_device_groups[];
164extern const struct attribute_group *usb_interface_groups[];
165
166/* usbfs stuff */
167extern struct mutex usbfs_mutex;
168extern struct usb_driver usbfs_driver;
169extern const struct file_operations usbfs_devices_fops;
170extern const struct file_operations usbdev_file_operations;
171extern void usbfs_conn_disc_event(void);
172
173extern int usb_devio_init(void);
174extern void usb_devio_cleanup(void);
175
176/* internal notify stuff */
177extern void usb_notify_add_device(struct usb_device *udev);
178extern void usb_notify_remove_device(struct usb_device *udev);
179extern void usb_notify_add_bus(struct usb_bus *ubus);
180extern void usb_notify_remove_bus(struct usb_bus *ubus);
181
182