audio.h 1.1 KB

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  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 <[email protected]>
  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. #include <uapi/linux/usb/audio.h>
  21. struct usb_audio_control {
  22. struct list_head list;
  23. const char *name;
  24. u8 type;
  25. int data[5];
  26. int (*set)(struct usb_audio_control *con, u8 cmd, int value);
  27. int (*get)(struct usb_audio_control *con, u8 cmd);
  28. };
  29. struct usb_audio_control_selector {
  30. struct list_head list;
  31. struct list_head control;
  32. u8 id;
  33. const char *name;
  34. u8 type;
  35. struct usb_descriptor_header *desc;
  36. };
  37. #endif /* __LINUX_USB_AUDIO_H */