azalia.h 1.3 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * Intel HDA audio codec config. This is a mechanicm to configure codecs when
  4. * using Intel HDA audio.
  5. *
  6. * Copyright 2018 Google LLC
  7. * Written by Simon Glass <sjg@chromium.org>
  8. */
  9. #ifndef __AZALIA_H
  10. #define __AZALIA_H
  11. #define AZALIA_CODEC_SHIFT 28
  12. #define AZALIA_NID_SHIFT 20
  13. #define AZALIA_VERB_SHIFT 8
  14. /* Supported opcodes */
  15. #define AZALIA_OPCODE_CONFIG_DEFAULT 0x71c
  16. #define AZALIA_OPCODE_IMPL_ID 0x720
  17. #define AZALIA_OPCODE_READ_PARAM 0xf00
  18. #define AZALIA_PARAM_VENDOR_ID 0
  19. /* Generate the register value to write a particular byte of a 32-bit value */
  20. #define AZALIA_SET_BYTE(codec, nid, opcode, val, byte) \
  21. ((codec) << AZALIA_CODEC_SHIFT | \
  22. (nid) << AZALIA_NID_SHIFT | \
  23. ((opcode) + (byte)) << AZALIA_VERB_SHIFT | \
  24. (((val) >> ((byte) * 8)) & 0xff))
  25. /* Generate the register value to write all bytes of a 32-bit value */
  26. #define AZALIA_WORD(codec, nid, opcode, val) \
  27. (AZALIA_SET_BYTE(codec, nid, opcode, val, 0) | \
  28. AZALIA_SET_BYTE(codec, nid, opcode, val, 1) | \
  29. AZALIA_SET_BYTE(codec, nid, opcode, val, 2) | \
  30. AZALIA_SET_BYTE(codec, nid, opcode, val, 3))
  31. #define AZALIA_PIN_CFG(codec, nid, val) \
  32. AZALIA_WORD(codec, nid, AZALIA_OPCODE_CONFIG_DEFAULT, val)
  33. #define AZALIA_SUBVENDOR(codec, val) \
  34. AZALIA_WORD(codec, 1, AZALIA_OPCODE_IMPL_ID, val)
  35. #endif /* __AZALIA_H */