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 void usb_release_quirk_list(void);
40extern int usb_remove_device(struct usb_device *udev);
41
42extern int usb_get_device_descriptor(struct usb_device *dev,
43 unsigned int size);
44extern int usb_set_isoch_delay(struct usb_device *dev);
45extern int usb_get_bos_descriptor(struct usb_device *dev);
46extern void usb_release_bos_descriptor(struct usb_device *dev);
47extern char *usb_cache_string(struct usb_device *udev, int index);
48extern int usb_set_configuration(struct usb_device *dev, int configuration);
49extern int usb_choose_configuration(struct usb_device *udev);
50
51static inline unsigned usb_get_max_power(struct usb_device *udev,
52 struct usb_host_config *c)
53{
54 /* SuperSpeed power is in 8 mA units; others are in 2 mA units */
55 unsigned mul = (udev->speed >= USB_SPEED_SUPER ? 8 : 2);
56
57 return c->desc.bMaxPower * mul;
58}
59
60extern void usb_kick_hub_wq(struct usb_device *dev);
61extern int usb_match_one_id_intf(struct usb_device *dev,
62 struct usb_host_interface *intf,
63 const struct usb_device_id *id);
64extern int usb_match_device(struct usb_device *dev,
65 const struct usb_device_id *id);
66extern void usb_forced_unbind_intf(struct usb_interface *intf);
67extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev);
68
69extern void usb_hub_release_all_ports(struct usb_device *hdev,
70 struct usb_dev_state *owner);
71extern bool usb_device_is_owned(struct usb_device *udev);
72
73extern int usb_hub_init(void);
74extern void usb_hub_cleanup(void);
75extern int usb_major_init(void);
76extern void usb_major_cleanup(void);
77extern int usb_device_supports_lpm(struct usb_device *udev);
78extern int usb_port_disable(struct usb_device *udev);
79
80#ifdef CONFIG_PM
81
82extern int usb_suspend(struct device *dev, pm_message_t msg);
83extern int usb_resume(struct device *dev, pm_message_t msg);
84extern int usb_resume_complete(struct device *dev);
85
86extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
87extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
88
89extern void usb_autosuspend_device(struct usb_device *udev);
90extern int usb_autoresume_device(struct usb_device *udev);
91extern int usb_remote_wakeup(struct usb_device *dev);
92extern int usb_runtime_suspend(struct device *dev);
93extern int usb_runtime_resume(struct device *dev);
94extern int usb_runtime_idle(struct device *dev);
95extern int usb_enable_usb2_hardware_lpm(struct usb_device *udev);
96extern int usb_disable_usb2_hardware_lpm(struct usb_device *udev);
97
98extern void usbfs_notify_suspend(struct usb_device *udev);
99extern void usbfs_notify_resume(struct usb_device *udev);
100
101#else
102
103static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
104{
105 return 0;
106}
107
108static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
109{
110 return 0;
111}
112
113#define usb_autosuspend_device(udev) do {} while (0)
114static inline int usb_autoresume_device(struct usb_device *udev)
115{
116 return 0;
117}
118
119static inline int usb_enable_usb2_hardware_lpm(struct usb_device *udev)
120{
121 return 0;
122}
123
124static inline int usb_disable_usb2_hardware_lpm(struct usb_device *udev)
125{
126 return 0;
127}
128
129#endif
130
131extern struct bus_type usb_bus_type;
132extern struct mutex usb_port_peer_mutex;
133extern struct device_type usb_device_type;
134extern struct device_type usb_if_device_type;
135extern struct device_type usb_ep_device_type;
136extern struct device_type usb_port_device_type;
137extern struct usb_device_driver usb_generic_driver;
138
139static inline int is_usb_device(const struct device *dev)
140{
141 return dev->type == &usb_device_type;
142}
143
144static inline int is_usb_interface(const struct device *dev)
145{
146 return dev->type == &usb_if_device_type;
147}
148
149static inline int is_usb_endpoint(const struct device *dev)
150{
151 return dev->type == &usb_ep_device_type;
152}
153
154static inline int is_usb_port(const struct device *dev)
155{
156 return dev->type == &usb_port_device_type;
157}
158
159static inline int is_root_hub(struct usb_device *udev)
160{
161 return (udev->parent == NULL);
162}
163
164/* Do the same for device drivers and interface drivers. */
165
166static inline int is_usb_device_driver(struct device_driver *drv)
167{
168 return container_of(drv, struct usbdrv_wrap, driver)->
169 for_devices;
170}
171
172/* for labeling diagnostics */
173extern const char *usbcore_name;
174
175/* sysfs stuff */
176extern const struct attribute_group *usb_device_groups[];
177extern const struct attribute_group *usb_interface_groups[];
178
179/* usbfs stuff */
180extern struct usb_driver usbfs_driver;
181extern const struct file_operations usbfs_devices_fops;
182extern const struct file_operations usbdev_file_operations;
183extern void usbfs_conn_disc_event(void);
184
185extern int usb_devio_init(void);
186extern void usb_devio_cleanup(void);
187
188/*
189 * Firmware specific cookie identifying a port's location. '0' == no location
190 * data available
191 */
192typedef u32 usb_port_location_t;
193
194/* internal notify stuff */
195extern void usb_notify_add_device(struct usb_device *udev);
196extern void usb_notify_remove_device(struct usb_device *udev);
197extern void usb_notify_add_bus(struct usb_bus *ubus);
198extern void usb_notify_remove_bus(struct usb_bus *ubus);
199extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev,
200 struct usb_hub_descriptor *desc);
201
202#ifdef CONFIG_ACPI
203extern int usb_acpi_register(void);
204extern void usb_acpi_unregister(void);
205extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev,
206 int port1);
207#else
208static inline int usb_acpi_register(void) { return 0; };
209static inline void usb_acpi_unregister(void) { };
210#endif