usb.h revision 59d48b3f1fdf307115af38b91c3ea4ddb57b73a2 
1#include <linux/pm.h>
2#include <linux/acpi.h>
3
4struct usb_hub_descriptor;
5struct usb_dev_state;
6
7/* Functions local to drivers/usb/core/ */
8
9extern int usb_create_sysfs_dev_files(struct usb_device *dev);
10extern void usb_remove_sysfs_dev_files(struct usb_device *dev);
11extern void usb_create_sysfs_intf_files(struct usb_interface *intf);
12extern void usb_remove_sysfs_intf_files(struct usb_interface *intf);
13extern int usb_create_ep_devs(struct device *parent,
14				struct usb_host_endpoint *endpoint,
15				struct usb_device *udev);
16extern void usb_remove_ep_devs(struct usb_host_endpoint *endpoint);
17
18extern void usb_enable_endpoint(struct usb_device *dev,
19		struct usb_host_endpoint *ep, bool reset_toggle);
20extern void usb_enable_interface(struct usb_device *dev,
21		struct usb_interface *intf, bool reset_toggles);
22extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr,
23		bool reset_hardware);
24extern void usb_disable_interface(struct usb_device *dev,
25		struct usb_interface *intf, bool reset_hardware);
26extern void usb_release_interface_cache(struct kref *ref);
27extern void usb_disable_device(struct usb_device *dev, int skip_ep0);
28extern int usb_deauthorize_device(struct usb_device *);
29extern int usb_authorize_device(struct usb_device *);
30extern void usb_detect_quirks(struct usb_device *udev);
31extern void usb_detect_interface_quirks(struct usb_device *udev);
32extern int usb_remove_device(struct usb_device *udev);
33
34extern int usb_get_device_descriptor(struct usb_device *dev,
35		unsigned int size);
36extern int usb_get_bos_descriptor(struct usb_device *dev);
37extern void usb_release_bos_descriptor(struct usb_device *dev);
38extern char *usb_cache_string(struct usb_device *udev, int index);
39extern int usb_set_configuration(struct usb_device *dev, int configuration);
40extern int usb_choose_configuration(struct usb_device *udev);
41
42static inline unsigned usb_get_max_power(struct usb_device *udev,
43		struct usb_host_config *c)
44{
45	/* SuperSpeed power is in 8 mA units; others are in 2 mA units */
46	unsigned mul = (udev->speed == USB_SPEED_SUPER ? 8 : 2);
47
48	return c->desc.bMaxPower * mul;
49}
50
51extern void usb_kick_hub_wq(struct usb_device *dev);
52extern int usb_match_one_id_intf(struct usb_device *dev,
53				 struct usb_host_interface *intf,
54				 const struct usb_device_id *id);
55extern int usb_match_device(struct usb_device *dev,
56			    const struct usb_device_id *id);
57extern void usb_forced_unbind_intf(struct usb_interface *intf);
58extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev);
59
60extern void usb_hub_release_all_ports(struct usb_device *hdev,
61		struct usb_dev_state *owner);
62extern bool usb_device_is_owned(struct usb_device *udev);
63
64extern int  usb_hub_init(void);
65extern void usb_hub_cleanup(void);
66extern int usb_major_init(void);
67extern void usb_major_cleanup(void);
68
69#ifdef	CONFIG_PM
70
71extern int usb_suspend(struct device *dev, pm_message_t msg);
72extern int usb_resume(struct device *dev, pm_message_t msg);
73extern int usb_resume_complete(struct device *dev);
74
75extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
76extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
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
90#endif
91
92#ifdef CONFIG_PM_RUNTIME
93
94extern void usb_autosuspend_device(struct usb_device *udev);
95extern int usb_autoresume_device(struct usb_device *udev);
96extern int usb_remote_wakeup(struct usb_device *dev);
97extern int usb_runtime_suspend(struct device *dev);
98extern int usb_runtime_resume(struct device *dev);
99extern int usb_runtime_idle(struct device *dev);
100extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable);
101
102#else
103
104#define usb_autosuspend_device(udev)		do {} while (0)
105static inline int usb_autoresume_device(struct usb_device *udev)
106{
107	return 0;
108}
109
110static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
111{
112	return 0;
113}
114#endif
115
116extern struct bus_type usb_bus_type;
117extern struct mutex usb_port_peer_mutex;
118extern struct device_type usb_device_type;
119extern struct device_type usb_if_device_type;
120extern struct device_type usb_ep_device_type;
121extern struct device_type usb_port_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
139static inline int is_usb_port(const struct device *dev)
140{
141	return dev->type == &usb_port_device_type;
142}
143
144/* Do the same for device drivers and interface drivers. */
145
146static inline int is_usb_device_driver(struct device_driver *drv)
147{
148	return container_of(drv, struct usbdrv_wrap, driver)->
149			for_devices;
150}
151
152/* for labeling diagnostics */
153extern const char *usbcore_name;
154
155/* sysfs stuff */
156extern const struct attribute_group *usb_device_groups[];
157extern const struct attribute_group *usb_interface_groups[];
158
159/* usbfs stuff */
160extern struct mutex usbfs_mutex;
161extern struct usb_driver usbfs_driver;
162extern const struct file_operations usbfs_devices_fops;
163extern const struct file_operations usbdev_file_operations;
164extern void usbfs_conn_disc_event(void);
165
166extern int usb_devio_init(void);
167extern void usb_devio_cleanup(void);
168
169/*
170 * Firmware specific cookie identifying a port's location. '0' == no location
171 * data available
172 */
173typedef u32 usb_port_location_t;
174
175/* internal notify stuff */
176extern void usb_notify_add_device(struct usb_device *udev);
177extern void usb_notify_remove_device(struct usb_device *udev);
178extern void usb_notify_add_bus(struct usb_bus *ubus);
179extern void usb_notify_remove_bus(struct usb_bus *ubus);
180extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev,
181		struct usb_hub_descriptor *desc);
182
183#ifdef CONFIG_ACPI
184extern int usb_acpi_register(void);
185extern void usb_acpi_unregister(void);
186extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev,
187	int port1);
188#else
189static inline int usb_acpi_register(void) { return 0; };
190static inline void usb_acpi_unregister(void) { };
191#endif
192