tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Released under the GPLv2 only.
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_set_isoch_delay(struct usb_device *dev);
44extern int usb_get_bos_descriptor(struct usb_device *dev);
45extern void usb_release_bos_descriptor(struct usb_device *dev);
46extern char *usb_cache_string(struct usb_device *udev, int index);
47extern int usb_set_configuration(struct usb_device *dev, int configuration);
48extern int usb_choose_configuration(struct usb_device *udev);
49
50static inline unsigned usb_get_max_power(struct usb_device *udev,
51 struct usb_host_config *c)
52{
53 /* SuperSpeed power is in 8 mA units; others are in 2 mA units */
54 unsigned mul = (udev->speed >= USB_SPEED_SUPER ? 8 : 2);
55
56 return c->desc.bMaxPower * mul;
57}
58
59extern void usb_kick_hub_wq(struct usb_device *dev);
60extern int usb_match_one_id_intf(struct usb_device *dev,
61 struct usb_host_interface *intf,
62 const struct usb_device_id *id);
63extern int usb_match_device(struct usb_device *dev,
64 const struct usb_device_id *id);
65extern void usb_forced_unbind_intf(struct usb_interface *intf);
66extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev);
67
68extern void usb_hub_release_all_ports(struct usb_device *hdev,
69 struct usb_dev_state *owner);
70extern bool usb_device_is_owned(struct usb_device *udev);
71
72extern int usb_hub_init(void);
73extern void usb_hub_cleanup(void);
74extern int usb_major_init(void);
75extern void usb_major_cleanup(void);
76extern int usb_device_supports_lpm(struct usb_device *udev);
77extern int usb_port_disable(struct usb_device *udev);
78
79#ifdef CONFIG_PM
80
81extern int usb_suspend(struct device *dev, pm_message_t msg);
82extern int usb_resume(struct device *dev, pm_message_t msg);
83extern int usb_resume_complete(struct device *dev);
84
85extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
86extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
87
88extern void usb_autosuspend_device(struct usb_device *udev);
89extern int usb_autoresume_device(struct usb_device *udev);
90extern int usb_remote_wakeup(struct usb_device *dev);
91extern int usb_runtime_suspend(struct device *dev);
92extern int usb_runtime_resume(struct device *dev);
93extern int usb_runtime_idle(struct device *dev);
94extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable);
95
96#else
97
98static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
99{
100 return 0;
101}
102
103static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
104{
105 return 0;
106}
107
108#define usb_autosuspend_device(udev) do {} while (0)
109static inline int usb_autoresume_device(struct usb_device *udev)
110{
111 return 0;
112}
113
114static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
115{
116 return 0;
117}
118
119#endif
120
121extern struct bus_type usb_bus_type;
122extern struct mutex usb_port_peer_mutex;
123extern struct device_type usb_device_type;
124extern struct device_type usb_if_device_type;
125extern struct device_type usb_ep_device_type;
126extern struct device_type usb_port_device_type;
127extern struct usb_device_driver usb_generic_driver;
128
129static inline int is_usb_device(const struct device *dev)
130{
131 return dev->type == &usb_device_type;
132}
133
134static inline int is_usb_interface(const struct device *dev)
135{
136 return dev->type == &usb_if_device_type;
137}
138
139static inline int is_usb_endpoint(const struct device *dev)
140{
141 return dev->type == &usb_ep_device_type;
142}
143
144static inline int is_usb_port(const struct device *dev)
145{
146 return dev->type == &usb_port_device_type;
147}
148
149/* Do the same for device drivers and interface drivers. */
150
151static inline int is_usb_device_driver(struct device_driver *drv)
152{
153 return container_of(drv, struct usbdrv_wrap, driver)->
154 for_devices;
155}
156
157/* for labeling diagnostics */
158extern const char *usbcore_name;
159
160/* sysfs stuff */
161extern const struct attribute_group *usb_device_groups[];
162extern const struct attribute_group *usb_interface_groups[];
163
164/* usbfs stuff */
165extern struct mutex usbfs_mutex;
166extern struct usb_driver usbfs_driver;
167extern const struct file_operations usbfs_devices_fops;
168extern const struct file_operations usbdev_file_operations;
169extern void usbfs_conn_disc_event(void);
170
171extern int usb_devio_init(void);
172extern void usb_devio_cleanup(void);
173
174/*
175 * Firmware specific cookie identifying a port's location. '0' == no location
176 * data available
177 */
178typedef u32 usb_port_location_t;
179
180/* internal notify stuff */
181extern void usb_notify_add_device(struct usb_device *udev);
182extern void usb_notify_remove_device(struct usb_device *udev);
183extern void usb_notify_add_bus(struct usb_bus *ubus);
184extern void usb_notify_remove_bus(struct usb_bus *ubus);
185extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev,
186 struct usb_hub_descriptor *desc);
187
188#ifdef CONFIG_ACPI
189extern int usb_acpi_register(void);
190extern void usb_acpi_unregister(void);
191extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev,
192 int port1);
193#else
194static inline int usb_acpi_register(void) { return 0; };
195static inline void usb_acpi_unregister(void) { };
196#endif