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- /* SPDX-License-Identifier: GPL-2.0+ */
- /*
- * Intel HDA audio codec config. This is a mechanicm to configure codecs when
- * using Intel HDA audio.
- *
- * Copyright 2018 Google LLC
- * Written by Simon Glass <sjg@chromium.org>
- */
- #ifndef __AZALIA_H
- #define __AZALIA_H
- #define AZALIA_CODEC_SHIFT 28
- #define AZALIA_NID_SHIFT 20
- #define AZALIA_VERB_SHIFT 8
- /* Supported opcodes */
- #define AZALIA_OPCODE_CONFIG_DEFAULT 0x71c
- #define AZALIA_OPCODE_IMPL_ID 0x720
- #define AZALIA_OPCODE_READ_PARAM 0xf00
- #define AZALIA_PARAM_VENDOR_ID 0
- /* Generate the register value to write a particular byte of a 32-bit value */
- #define AZALIA_SET_BYTE(codec, nid, opcode, val, byte) \
- ((codec) << AZALIA_CODEC_SHIFT | \
- (nid) << AZALIA_NID_SHIFT | \
- ((opcode) + (byte)) << AZALIA_VERB_SHIFT | \
- (((val) >> ((byte) * 8)) & 0xff))
- /* Generate the register value to write all bytes of a 32-bit value */
- #define AZALIA_WORD(codec, nid, opcode, val) \
- (AZALIA_SET_BYTE(codec, nid, opcode, val, 0) | \
- AZALIA_SET_BYTE(codec, nid, opcode, val, 1) | \
- AZALIA_SET_BYTE(codec, nid, opcode, val, 2) | \
- AZALIA_SET_BYTE(codec, nid, opcode, val, 3))
- #define AZALIA_PIN_CFG(codec, nid, val) \
- AZALIA_WORD(codec, nid, AZALIA_OPCODE_CONFIG_DEFAULT, val)
- #define AZALIA_SUBVENDOR(codec, val) \
- AZALIA_WORD(codec, 1, AZALIA_OPCODE_IMPL_ID, val)
- #endif /* __AZALIA_H */
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