tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Released under the GPLv2 only.
3 * SPDX-License-Identifier: GPL-2.0
4 */
5
6#include <linux/pm.h>
7#include <linux/acpi.h>
8
9struct usb_hub_descriptor;
10struct usb_dev_state;
11
12/* Functions local to drivers/usb/core/ */
13
14extern int usb_create_sysfs_dev_files(struct usb_device *dev);
15extern void usb_remove_sysfs_dev_files(struct usb_device *dev);
16extern void usb_create_sysfs_intf_files(struct usb_interface *intf);
17extern void usb_remove_sysfs_intf_files(struct usb_interface *intf);
18extern int usb_create_ep_devs(struct device *parent,
19 struct usb_host_endpoint *endpoint,
20 struct usb_device *udev);
21extern void usb_remove_ep_devs(struct usb_host_endpoint *endpoint);
22
23extern void usb_enable_endpoint(struct usb_device *dev,
24 struct usb_host_endpoint *ep, bool reset_toggle);
25extern void usb_enable_interface(struct usb_device *dev,
26 struct usb_interface *intf, bool reset_toggles);
27extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr,
28 bool reset_hardware);
29extern void usb_disable_interface(struct usb_device *dev,
30 struct usb_interface *intf, bool reset_hardware);
31extern void usb_release_interface_cache(struct kref *ref);
32extern void usb_disable_device(struct usb_device *dev, int skip_ep0);
33extern int usb_deauthorize_device(struct usb_device *);
34extern int usb_authorize_device(struct usb_device *);
35extern void usb_deauthorize_interface(struct usb_interface *);
36extern void usb_authorize_interface(struct usb_interface *);
37extern void usb_detect_quirks(struct usb_device *udev);
38extern void usb_detect_interface_quirks(struct usb_device *udev);
39extern int usb_remove_device(struct usb_device *udev);
40
41extern int usb_get_device_descriptor(struct usb_device *dev,
42 unsigned int size);
43extern int usb_get_bos_descriptor(struct usb_device *dev);
44extern void usb_release_bos_descriptor(struct usb_device *dev);
45extern char *usb_cache_string(struct usb_device *udev, int index);
46extern int usb_set_configuration(struct usb_device *dev, int configuration);
47extern int usb_choose_configuration(struct usb_device *udev);
48
49static inline unsigned usb_get_max_power(struct usb_device *udev,
50 struct usb_host_config *c)
51{
52 /* SuperSpeed power is in 8 mA units; others are in 2 mA units */
53 unsigned mul = (udev->speed >= USB_SPEED_SUPER ? 8 : 2);
54
55 return c->desc.bMaxPower * mul;
56}
57
58extern void usb_kick_hub_wq(struct usb_device *dev);
59extern int usb_match_one_id_intf(struct usb_device *dev,
60 struct usb_host_interface *intf,
61 const struct usb_device_id *id);
62extern int usb_match_device(struct usb_device *dev,
63 const struct usb_device_id *id);
64extern void usb_forced_unbind_intf(struct usb_interface *intf);
65extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev);
66
67extern void usb_hub_release_all_ports(struct usb_device *hdev,
68 struct usb_dev_state *owner);
69extern bool usb_device_is_owned(struct usb_device *udev);
70
71extern int usb_hub_init(void);
72extern void usb_hub_cleanup(void);
73extern int usb_major_init(void);
74extern void usb_major_cleanup(void);
75extern int usb_device_supports_lpm(struct usb_device *udev);
76
77#ifdef CONFIG_PM
78
79extern int usb_suspend(struct device *dev, pm_message_t msg);
80extern int usb_resume(struct device *dev, pm_message_t msg);
81extern int usb_resume_complete(struct device *dev);
82
83extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
84extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
85
86extern void usb_autosuspend_device(struct usb_device *udev);
87extern int usb_autoresume_device(struct usb_device *udev);
88extern int usb_remote_wakeup(struct usb_device *dev);
89extern int usb_runtime_suspend(struct device *dev);
90extern int usb_runtime_resume(struct device *dev);
91extern int usb_runtime_idle(struct device *dev);
92extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable);
93
94#else
95
96static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
97{
98 return 0;
99}
100
101static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
102{
103 return 0;
104}
105
106#define usb_autosuspend_device(udev) do {} while (0)
107static inline int usb_autoresume_device(struct usb_device *udev)
108{
109 return 0;
110}
111
112static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
113{
114 return 0;
115}
116
117#endif
118
119extern struct bus_type usb_bus_type;
120extern struct mutex usb_port_peer_mutex;
121extern struct device_type usb_device_type;
122extern struct device_type usb_if_device_type;
123extern struct device_type usb_ep_device_type;
124extern struct device_type usb_port_device_type;
125extern struct usb_device_driver usb_generic_driver;
126
127static inline int is_usb_device(const struct device *dev)
128{
129 return dev->type == &usb_device_type;
130}
131
132static inline int is_usb_interface(const struct device *dev)
133{
134 return dev->type == &usb_if_device_type;
135}
136
137static inline int is_usb_endpoint(const struct device *dev)
138{
139 return dev->type == &usb_ep_device_type;
140}
141
142static inline int is_usb_port(const struct device *dev)
143{
144 return dev->type == &usb_port_device_type;
145}
146
147/* Do the same for device drivers and interface drivers. */
148
149static inline int is_usb_device_driver(struct device_driver *drv)
150{
151 return container_of(drv, struct usbdrv_wrap, driver)->
152 for_devices;
153}
154
155/* for labeling diagnostics */
156extern const char *usbcore_name;
157
158/* sysfs stuff */
159extern const struct attribute_group *usb_device_groups[];
160extern const struct attribute_group *usb_interface_groups[];
161
162/* usbfs stuff */
163extern struct mutex usbfs_mutex;
164extern struct usb_driver usbfs_driver;
165extern const struct file_operations usbfs_devices_fops;
166extern const struct file_operations usbdev_file_operations;
167extern void usbfs_conn_disc_event(void);
168
169extern int usb_devio_init(void);
170extern void usb_devio_cleanup(void);
171
172/*
173 * Firmware specific cookie identifying a port's location. '0' == no location
174 * data available
175 */
176typedef u32 usb_port_location_t;
177
178/* internal notify stuff */
179extern void usb_notify_add_device(struct usb_device *udev);
180extern void usb_notify_remove_device(struct usb_device *udev);
181extern void usb_notify_add_bus(struct usb_bus *ubus);
182extern void usb_notify_remove_bus(struct usb_bus *ubus);
183extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev,
184 struct usb_hub_descriptor *desc);
185
186#ifdef CONFIG_ACPI
187extern int usb_acpi_register(void);
188extern void usb_acpi_unregister(void);
189extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev,
190 int port1);
191#else
192static inline int usb_acpi_register(void) { return 0; };
193static inline void usb_acpi_unregister(void) { };
194#endif