include/linux/usb/audio.h

   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 */