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