aboutsummaryrefslogtreecommitdiff
path: root/drivers/usb/core/usb.h
blob: 9a8b15e6377acab8cf23be6b864f14577561fdbe (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
#include <linux/pm.h>

/* Functions local to drivers/usb/core/ */

extern int usb_create_sysfs_dev_files(struct usb_device *dev);
extern void usb_remove_sysfs_dev_files(struct usb_device *dev);
extern int usb_create_sysfs_intf_files(struct usb_interface *intf);
extern void usb_remove_sysfs_intf_files(struct usb_interface *intf);
extern int usb_create_ep_devs(struct device *parent,
				struct usb_host_endpoint *endpoint,
				struct usb_device *udev);
extern void usb_remove_ep_devs(struct usb_host_endpoint *endpoint);

extern void usb_enable_endpoint(struct usb_device *dev,
		struct usb_host_endpoint *ep, bool reset_toggle);
extern void usb_enable_interface(struct usb_device *dev,
		struct usb_interface *intf, bool reset_toggles);
extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr,
		bool reset_hardware);
extern void usb_disable_interface(struct usb_device *dev,
		struct usb_interface *intf, bool reset_hardware);
extern void usb_release_interface_cache(struct kref *ref);
extern void usb_disable_device(struct usb_device *dev, int skip_ep0);
extern int usb_deauthorize_device(struct usb_device *);
extern int usb_authorize_device(struct usb_device *);
extern void usb_detect_quirks(struct usb_device *udev);

extern int usb_get_device_descriptor(struct usb_device *dev,
		unsigned int size);
extern char *usb_cache_string(struct usb_device *udev, int index);
extern int usb_set_configuration(struct usb_device *dev, int configuration);
extern int usb_choose_configuration(struct usb_device *udev);

extern void usb_kick_khubd(struct usb_device *dev);
extern int usb_match_device(struct usb_device *dev,
			    const struct usb_device_id *id);
extern void usb_forced_unbind_intf(struct usb_interface *intf);
extern void usb_rebind_intf(struct usb_interface *intf);

extern int usb_hub_claim_port(struct usb_device *hdev, unsigned port,
		void *owner);
extern int usb_hub_release_port(struct usb_device *hdev, unsigned port,
		void *owner);
extern void usb_hub_release_all_ports(struct usb_device *hdev, void *owner);
extern bool usb_device_is_owned(struct usb_device *udev);

extern int  usb_hub_init(void);
extern void usb_hub_cleanup(void);
extern int usb_major_init(void);
extern void usb_major_cleanup(void);

#ifdef	CONFIG_PM

extern int usb_suspend(struct device *dev, pm_message_t msg);
extern int usb_resume(struct device *dev, pm_message_t msg);

extern void usb_autosuspend_work(struct work_struct *work);
extern void usb_autoresume_work(struct work_struct *work);
extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
extern int usb_external_suspend_device(struct usb_device *udev,
		pm_message_t msg);
extern int usb_external_resume_device(struct usb_device *udev,
		pm_message_t msg);

static inline void usb_pm_lock(struct usb_device *udev)
{
	mutex_lock_nested(&udev->pm_mutex, udev->level);
}

static inline void usb_pm_unlock(struct usb_device *udev)
{
	mutex_unlock(&udev->pm_mutex);
}

#else

static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
{
	return 0;
}

static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
{
	return 0;
}

static inline void usb_pm_lock(struct usb_device *udev) {}
static inline void usb_pm_unlock(struct usb_device *udev) {}

#endif

#ifdef CONFIG_USB_SUSPEND

extern void usb_autosuspend_device(struct usb_device *udev);
extern void usb_try_autosuspend_device(struct usb_device *udev);
extern int usb_autoresume_device(struct usb_device *udev);

#else

#define usb_autosuspend_device(udev)		do {} while (0)
#define usb_try_autosuspend_device(udev)	do {} while (0)
static inline int usb_autoresume_device(struct usb_device *udev)
{
	return 0;
}

#endif

extern struct workqueue_struct *ksuspend_usb_wq;
extern struct bus_type usb_bus_type;
extern struct device_type usb_device_type;
extern struct device_type usb_if_device_type;
extern struct device_type usb_ep_device_type;
extern struct usb_device_driver usb_generic_driver;

static inline int is_usb_device(const struct device *dev)
{
	return dev->type == &usb_device_type;
}

static inline int is_usb_interface(const struct device *dev)
{
	return dev->type == &usb_if_device_type;
}

static inline int is_usb_endpoint(const struct device *dev)
{
	return dev->type == &usb_ep_device_type;
}

/* Do the same for device drivers and interface drivers. */

static inline int is_usb_device_driver(struct device_driver *drv)
{
	return container_of(drv, struct usbdrv_wrap, driver)->
			for_devices;
}

/* Interfaces and their "power state" are owned by usbcore */

static inline void mark_active(struct usb_interface *f)
{
	f->is_active = 1;
}

static inline void mark_quiesced(struct usb_interface *f)
{
	f->is_active = 0;
}

static inline int is_active(const struct usb_interface *f)
{
	return f->is_active;
}


/* for labeling diagnostics */
extern const char *usbcore_name;

/* sysfs stuff */
extern const struct attribute_group *usb_device_groups[];
extern const struct attribute_group *usb_interface_groups[];

/* usbfs stuff */
extern struct mutex usbfs_mutex;
extern struct usb_driver usbfs_driver;
extern const struct file_operations usbfs_devices_fops;
extern const struct file_operations usbdev_file_operations;
extern void usbfs_conn_disc_event(void);

extern int usb_devio_init(void);
extern void usb_devio_cleanup(void);

/* internal notify stuff */
extern void usb_notify_add_device(struct usb_device *udev);
extern void usb_notify_remove_device(struct usb_device *udev);
extern void usb_notify_add_bus(struct usb_bus *ubus);
extern void usb_notify_remove_bus(struct usb_bus *ubus);