LXR uboot/include/dt-bindings/sound/azalia.h

   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
  10#ifndef __AZALIA_H
  11#define __AZALIA_H
  12
  13#define AZALIA_CODEC_SHIFT              28
  14#define AZALIA_NID_SHIFT                20
  15#define AZALIA_VERB_SHIFT               8
  16
  17/* Supported opcodes */
  18#define AZALIA_OPCODE_CONFIG_DEFAULT    0x71c
  19#define AZALIA_OPCODE_IMPL_ID           0x720
  20#define AZALIA_OPCODE_READ_PARAM        0xf00
  21
  22#define AZALIA_PARAM_VENDOR_ID          0
  23
  24/* Generate the register value to write a particular byte of a 32-bit value */
  25#define AZALIA_SET_BYTE(codec, nid, opcode, val, byte)          \
  26        ((codec) << AZALIA_CODEC_SHIFT |                        \
  27         (nid) << AZALIA_NID_SHIFT |                    \
  28         ((opcode) + (byte)) << AZALIA_VERB_SHIFT |             \
  29         (((val) >> ((byte) * 8)) & 0xff))
  30
  31/* Generate the register value to write all bytes of a 32-bit value */
  32#define AZALIA_WORD(codec, nid, opcode, val)                    \
  33         (AZALIA_SET_BYTE(codec, nid, opcode, val, 0) | \
  34          AZALIA_SET_BYTE(codec, nid, opcode, val, 1) |         \
  35          AZALIA_SET_BYTE(codec, nid, opcode, val, 2) |         \
  36          AZALIA_SET_BYTE(codec, nid, opcode, val, 3))
  37
  38#define AZALIA_PIN_CFG(codec, nid, val)                         \
  39         AZALIA_WORD(codec, nid, AZALIA_OPCODE_CONFIG_DEFAULT, val)
  40
  41#define AZALIA_SUBVENDOR(codec, val)                            \
  42         AZALIA_WORD(codec, 1, AZALIA_OPCODE_IMPL_ID, val)
  43
  44#endif /* __AZALIA_H */
  45