1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Intel HDA audio codec config. This is a mechanicm to configure codecs when
4 * using Intel HDA audio.
6 * Copyright 2018 Google LLC
7 * Written by Simon Glass <sjg@chromium.org>
13 #define AZALIA_CODEC_SHIFT 28
14 #define AZALIA_NID_SHIFT 20
15 #define AZALIA_VERB_SHIFT 8
17 /* Supported opcodes */
18 #define AZALIA_OPCODE_CONFIG_DEFAULT 0x71c
19 #define AZALIA_OPCODE_IMPL_ID 0x720
20 #define AZALIA_OPCODE_READ_PARAM 0xf00
22 #define AZALIA_PARAM_VENDOR_ID 0
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))
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))
38 #define AZALIA_PIN_CFG(codec, nid, val) \
39 AZALIA_WORD(codec, nid, AZALIA_OPCODE_CONFIG_DEFAULT, val)
41 #define AZALIA_SUBVENDOR(codec, val) \
42 AZALIA_WORD(codec, 1, AZALIA_OPCODE_IMPL_ID, val)
44 #endif /* __AZALIA_H */