audio.h 1.2 KB

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