1 // SPDX-License-Identifier: GPL-2.0 <<
2 /* 1 /*
3 * <linux/usb/audio.h> -- USB Audio definition 2 * <linux/usb/audio.h> -- USB Audio definitions.
4 * 3 *
5 * Copyright (C) 2006 Thumtronics Pty Ltd. 4 * Copyright (C) 2006 Thumtronics Pty Ltd.
6 * Developed for Thumtronics by Grey Innovatio 5 * Developed for Thumtronics by Grey Innovation
7 * Ben Williamson <ben.williamson@greyinnovati 6 * Ben Williamson <ben.williamson@greyinnovation.com>
>> 7 *
>> 8 * This software is distributed under the terms of the GNU General Public
>> 9 * License ("GPL") version 2, as published by the Free Software Foundation.
8 * 10 *
9 * This file holds USB constants and structure 11 * This file holds USB constants and structures defined
10 * by the USB Device Class Definition for Audi 12 * by the USB Device Class Definition for Audio Devices.
11 * Comments below reference relevant sections 13 * Comments below reference relevant sections of that document:
12 * 14 *
13 * http://www.usb.org/developers/devclass_docs 15 * http://www.usb.org/developers/devclass_docs/audio10.pdf
14 * 16 *
15 * Types and defines in this file are either s 17 * Types and defines in this file are either specific to version 1.0 of
16 * this standard or common for newer versions. 18 * this standard or common for newer versions.
17 */ 19 */
18 #ifndef __LINUX_USB_AUDIO_H 20 #ifndef __LINUX_USB_AUDIO_H
19 #define __LINUX_USB_AUDIO_H 21 #define __LINUX_USB_AUDIO_H
20 22
21 #include <uapi/linux/usb/audio.h> 23 #include <uapi/linux/usb/audio.h>
22 24
23 25
24 struct usb_audio_control { 26 struct usb_audio_control {
25 struct list_head list; 27 struct list_head list;
26 const char *name; 28 const char *name;
27 u8 type; 29 u8 type;
28 int data[5]; 30 int data[5];
29 int (*set)(struct usb_audio_control *c 31 int (*set)(struct usb_audio_control *con, u8 cmd, int value);
30 int (*get)(struct usb_audio_control *c 32 int (*get)(struct usb_audio_control *con, u8 cmd);
31 }; 33 };
32 34
33 struct usb_audio_control_selector { 35 struct usb_audio_control_selector {
34 struct list_head list; 36 struct list_head list;
35 struct list_head control; 37 struct list_head control;
36 u8 id; 38 u8 id;
37 const char *name; 39 const char *name;
38 u8 type; 40 u8 type;
39 struct usb_descriptor_header *desc; 41 struct usb_descriptor_header *desc;
40 }; 42 };
41 43
42 #endif /* __LINUX_USB_AUDIO_H */ 44 #endif /* __LINUX_USB_AUDIO_H */
43 45
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