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);
68extern int usb_autoresume_device(struct usb_device *udev);
69
70#else
71
72#define usb_autosuspend_device(udev) do {} while (0)
73static inline int usb_autoresume_device(struct usb_device *udev)
74{
75 return 0;
76}
77
78#endif
79
80extern struct workqueue_struct *ksuspend_usb_wq;
81extern struct bus_type usb_bus_type;
82extern struct usb_device_driver usb_generic_driver;
83
84/* Here's how we tell apart devices and interfaces. Luckily there's
85 * no such thing as a platform USB device, so we can steal the use
86 * of the platform_data field. */
87
88static inline int is_usb_device(const struct device *dev)
89{
90 return dev->platform_data == &usb_generic_driver;
91}
92
93/* Do the same for device drivers and interface drivers. */
94
95static inline int is_usb_device_driver(struct device_driver *drv)
96{
97 return container_of(drv, struct usbdrv_wrap, driver)->
98 for_devices;
99}
100
101/* Interfaces and their "power state" are owned by usbcore */
102
103static inline void mark_active(struct usb_interface *f)
104{
105 f->is_active = 1;
106}
107
108static inline void mark_quiesced(struct usb_interface *f)
109{
110 f->is_active = 0;
111}
112
113static inline int is_active(const struct usb_interface *f)
114{
115 return f->is_active;
116}
117
118
119/* for labeling diagnostics */
120extern const char *usbcore_name;
121
122/* usbfs stuff */
123extern struct mutex usbfs_mutex;
124extern struct usb_driver usbfs_driver;
125extern const struct file_operations usbfs_devices_fops;
126extern const struct file_operations usbfs_device_file_operations;
127extern void usbfs_conn_disc_event(void);
128
129extern int usbdev_init(void);
130extern void usbdev_cleanup(void);
131
132struct dev_state {
133 struct list_head list; /* state list */
134 struct usb_device *dev;
135 struct file *file;
136 spinlock_t lock; /* protects the async urb lists */
137 struct list_head async_pending;
138 struct list_head async_completed;
139 wait_queue_head_t wait; /* wake up if a request completed */
140 unsigned int discsignr;
141 struct pid *disc_pid;
142 uid_t disc_uid, disc_euid;
143 void __user *disccontext;
144 unsigned long ifclaimed;
145 u32 secid;
146};
147
148/* internal notify stuff */
149extern void usb_notify_add_device(struct usb_device *udev);
150extern void usb_notify_remove_device(struct usb_device *udev);
151extern void usb_notify_add_bus(struct usb_bus *ubus);
152extern void usb_notify_remove_bus(struct usb_bus *ubus);
153