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kernel/linux-imx6_3.14.28/include/linux/usb/audio.h 1.2 KB
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  /*
   * <linux/usb/audio.h> -- USB Audio definitions.
   *
   * Copyright (C) 2006 Thumtronics Pty Ltd.
   * Developed for Thumtronics by Grey Innovation
   * Ben Williamson <ben.williamson@greyinnovation.com>
   *
   * This software is distributed under the terms of the GNU General Public
   * License ("GPL") version 2, as published by the Free Software Foundation.
   *
   * This file holds USB constants and structures defined
   * by the USB Device Class Definition for Audio Devices.
   * Comments below reference relevant sections of that document:
   *
   * http://www.usb.org/developers/devclass_docs/audio10.pdf
   *
   * Types and defines in this file are either specific to version 1.0 of
   * this standard or common for newer versions.
   */
  #ifndef __LINUX_USB_AUDIO_H
  #define __LINUX_USB_AUDIO_H
  
  #include <uapi/linux/usb/audio.h>
  
  
  struct usb_audio_control {
  	struct list_head list;
  	const char *name;
  	u8 type;
  	int data[5];
  	int (*set)(struct usb_audio_control *con, u8 cmd, int value);
  	int (*get)(struct usb_audio_control *con, u8 cmd);
  };
  
  struct usb_audio_control_selector {
  	struct list_head list;
  	struct list_head control;
  	u8 id;
  	const char *name;
  	u8 type;
  	struct usb_descriptor_header *desc;
  };
  
  #endif /* __LINUX_USB_AUDIO_H */