tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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);
16
17extern int usb_get_device_descriptor(struct usb_device *dev,
18 unsigned int size);
19extern char *usb_cache_string(struct usb_device *udev, int index);
20extern int usb_set_configuration(struct usb_device *dev, int configuration);
21
22extern void usb_kick_khubd(struct usb_device *dev);
23extern void usb_resume_root_hub(struct usb_device *dev);
24
25extern int usb_hub_init(void);
26extern void usb_hub_cleanup(void);
27extern int usb_major_init(void);
28extern void usb_major_cleanup(void);
29extern int usb_host_init(void);
30extern void usb_host_cleanup(void);
31
32#ifdef CONFIG_PM
33
34extern int usb_suspend_both(struct usb_device *udev, pm_message_t msg);
35extern int usb_resume_both(struct usb_device *udev);
36extern int usb_port_suspend(struct usb_device *dev);
37extern int usb_port_resume(struct usb_device *dev);
38
39static inline void usb_pm_lock(struct usb_device *udev)
40{
41 mutex_lock_nested(&udev->pm_mutex, udev->level);
42}
43
44static inline void usb_pm_unlock(struct usb_device *udev)
45{
46 mutex_unlock(&udev->pm_mutex);
47}
48
49#else
50
51#define usb_suspend_both(udev, msg) 0
52static inline int usb_resume_both(struct usb_device *udev)
53{
54 return 0;
55}
56#define usb_port_suspend(dev) 0
57#define usb_port_resume(dev) 0
58static inline void usb_pm_lock(struct usb_device *udev) {}
59static inline void usb_pm_unlock(struct usb_device *udev) {}
60
61#endif
62
63#ifdef CONFIG_USB_SUSPEND
64
65#define USB_AUTOSUSPEND_DELAY (HZ*2)
66
67extern void usb_autosuspend_device(struct usb_device *udev, int dec_busy_cnt);
68extern int usb_autoresume_device(struct usb_device *udev, int inc_busy_cnt);
69
70#else
71
72#define usb_autosuspend_device(udev, dec_busy_cnt) do {} while (0)
73static inline int usb_autoresume_device(struct usb_device *udev,
74 int inc_busy_cnt)
75{
76 return 0;
77}
78
79#endif
80
81extern struct workqueue_struct *ksuspend_usb_wq;
82extern struct bus_type usb_bus_type;
83extern struct usb_device_driver usb_generic_driver;
84
85/* Here's how we tell apart devices and interfaces. Luckily there's
86 * no such thing as a platform USB device, so we can steal the use
87 * of the platform_data field. */
88
89static inline int is_usb_device(const struct device *dev)
90{
91 return dev->platform_data == &usb_generic_driver;
92}
93
94/* Do the same for device drivers and interface drivers. */
95
96static inline int is_usb_device_driver(struct device_driver *drv)
97{
98 return container_of(drv, struct usbdrv_wrap, driver)->
99 for_devices;
100}
101
102/* Interfaces and their "power state" are owned by usbcore */
103
104static inline void mark_active(struct usb_interface *f)
105{
106 f->is_active = 1;
107}
108
109static inline void mark_quiesced(struct usb_interface *f)
110{
111 f->is_active = 0;
112}
113
114static inline int is_active(const struct usb_interface *f)
115{
116 return f->is_active;
117}
118
119
120/* for labeling diagnostics */
121extern const char *usbcore_name;
122
123/* usbfs stuff */
124extern struct mutex usbfs_mutex;
125extern struct usb_driver usbfs_driver;
126extern const struct file_operations usbfs_devices_fops;
127extern const struct file_operations usbfs_device_file_operations;
128extern void usbfs_conn_disc_event(void);
129
130extern int usbdev_init(void);
131extern void usbdev_cleanup(void);
132
133struct dev_state {
134 struct list_head list; /* state list */
135 struct usb_device *dev;
136 struct file *file;
137 spinlock_t lock; /* protects the async urb lists */
138 struct list_head async_pending;
139 struct list_head async_completed;
140 wait_queue_head_t wait; /* wake up if a request completed */
141 unsigned int discsignr;
142 struct pid *disc_pid;
143 uid_t disc_uid, disc_euid;
144 void __user *disccontext;
145 unsigned long ifclaimed;
146 u32 secid;
147};
148
149/* internal notify stuff */
150extern void usb_notify_add_device(struct usb_device *udev);
151extern void usb_notify_remove_device(struct usb_device *udev);
152extern void usb_notify_add_bus(struct usb_bus *ubus);
153extern void usb_notify_remove_bus(struct usb_bus *ubus);
154