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