1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * <linux/usb/audio.h> -- USB Audio definitions.
4  *
5  * Copyright (C) 2006 Thumtronics Pty Ltd.
6  * Developed for Thumtronics by Grey Innovation
7  * Ben Williamson <ben.williamson@greyinnovation.com>
8  *
9  * This file holds USB constants and structures defined
10  * by the USB Device Class Definition for Audio Devices.
11  * Comments below reference relevant sections of that document:
12  *
13  * http://www.usb.org/developers/devclass_docs/audio10.pdf
14  *
15  * Types and defines in this file are either specific to version 1.0 of
16  * this standard or common for newer versions.
17  */
18 #ifndef __LINUX_USB_AUDIO_H
19 #define __LINUX_USB_AUDIO_H
20 
21 #include <uapi/linux/usb/audio.h>
22 
23 
24 struct usb_audio_control {
25 	struct list_head list;
26 	const char *name;
27 	u8 type;
28 	int data[5];
29 	int (*set)(struct usb_audio_control *con, u8 cmd, int value);
30 	int (*get)(struct usb_audio_control *con, u8 cmd);
31 };
32 
33 struct usb_audio_control_selector {
34 	struct list_head list;
35 	struct list_head control;
36 	u8 id;
37 	const char *name;
38 	u8 type;
39 	struct usb_descriptor_header *desc;
40 };
41 
42 #endif /* __LINUX_USB_AUDIO_H */
43