usb.h revision 0534d46848990e8eed7cd0832d745d813e827261 
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);
66extern int usb_remote_wakeup(struct usb_device *dev);
67
68static inline void usb_pm_lock(struct usb_device *udev)
69{
70	mutex_lock_nested(&udev->pm_mutex, udev->level);
71}
72
73static inline void usb_pm_unlock(struct usb_device *udev)
74{
75	mutex_unlock(&udev->pm_mutex);
76}
77
78#else
79
80static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
81{
82	return 0;
83}
84
85static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
86{
87	return 0;
88}
89
90static inline int usb_remote_wakeup(struct usb_device *udev)
91{
92	return 0;
93}
94
95static inline void usb_pm_lock(struct usb_device *udev) {}
96static inline void usb_pm_unlock(struct usb_device *udev) {}
97
98#endif
99
100#ifdef CONFIG_USB_SUSPEND
101
102extern void usb_autosuspend_device(struct usb_device *udev);
103extern void usb_try_autosuspend_device(struct usb_device *udev);
104extern int usb_autoresume_device(struct usb_device *udev);
105
106#else
107
108#define usb_autosuspend_device(udev)		do {} while (0)
109#define usb_try_autosuspend_device(udev)	do {} while (0)
110static inline int usb_autoresume_device(struct usb_device *udev)
111{
112	return 0;
113}
114
115#endif
116
117extern struct workqueue_struct *ksuspend_usb_wq;
118extern struct bus_type usb_bus_type;
119extern struct device_type usb_device_type;
120extern struct device_type usb_if_device_type;
121extern struct device_type usb_ep_device_type;
122extern struct usb_device_driver usb_generic_driver;
123
124static inline int is_usb_device(const struct device *dev)
125{
126	return dev->type == &usb_device_type;
127}
128
129static inline int is_usb_interface(const struct device *dev)
130{
131	return dev->type == &usb_if_device_type;
132}
133
134static inline int is_usb_endpoint(const struct device *dev)
135{
136	return dev->type == &usb_ep_device_type;
137}
138
139/* Do the same for device drivers and interface drivers. */
140
141static inline int is_usb_device_driver(struct device_driver *drv)
142{
143	return container_of(drv, struct usbdrv_wrap, driver)->
144			for_devices;
145}
146
147/* Interfaces and their "power state" are owned by usbcore */
148
149static inline void mark_active(struct usb_interface *f)
150{
151	f->is_active = 1;
152}
153
154static inline void mark_quiesced(struct usb_interface *f)
155{
156	f->is_active = 0;
157}
158
159static inline int is_active(const struct usb_interface *f)
160{
161	return f->is_active;
162}
163
164
165/* for labeling diagnostics */
166extern const char *usbcore_name;
167
168/* sysfs stuff */
169extern const struct attribute_group *usb_device_groups[];
170extern const struct attribute_group *usb_interface_groups[];
171
172/* usbfs stuff */
173extern struct mutex usbfs_mutex;
174extern struct usb_driver usbfs_driver;
175extern const struct file_operations usbfs_devices_fops;
176extern const struct file_operations usbdev_file_operations;
177extern void usbfs_conn_disc_event(void);
178
179extern int usb_devio_init(void);
180extern void usb_devio_cleanup(void);
181
182/* internal notify stuff */
183extern void usb_notify_add_device(struct usb_device *udev);
184extern void usb_notify_remove_device(struct usb_device *udev);
185extern void usb_notify_add_bus(struct usb_bus *ubus);
186extern void usb_notify_remove_bus(struct usb_bus *ubus);
187
188