sound/soc/codecs/ak4671.c

Source file repositories/reference/linux-study-clean/sound/soc/codecs/ak4671.c

File Facts

System: Linux kernel
Corpus path: sound/soc/codecs/ak4671.c
Extension: .c
Size: 22393 bytes
Lines: 667
Domain: Driver Families
Bucket: sound/soc
Inferred role: Driver Families: implementation source
Status: source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

linux/module.h
linux/init.h
linux/i2c.h
linux/delay.h
linux/regmap.h
linux/slab.h
sound/soc.h
sound/initval.h
sound/tlv.h
ak4671.h

Detected Declarations

function ak4671_out2_event
function ak4671_hw_params
function ak4671_set_dai_sysclk
function ak4671_set_dai_fmt
function ak4671_set_bias_level
function ak4671_i2c_probe

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * ak4671.c  --  audio driver for AK4671
 *
 * Copyright (C) 2009 Samsung Electronics Co.Ltd
 * Author: Joonyoung Shim <jy0922.shim@samsung.com>
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>

#include "ak4671.h"


/* ak4671 register cache & default register settings */
static const struct reg_default ak4671_reg_defaults[] = {
	{ 0x00, 0x00 },	/* AK4671_AD_DA_POWER_MANAGEMENT	(0x00)	*/
	{ 0x01, 0xf6 },	/* AK4671_PLL_MODE_SELECT0		(0x01)	*/
	{ 0x02, 0x00 },	/* AK4671_PLL_MODE_SELECT1		(0x02)	*/
	{ 0x03, 0x02 },	/* AK4671_FORMAT_SELECT			(0x03)	*/
	{ 0x04, 0x00 },	/* AK4671_MIC_SIGNAL_SELECT		(0x04)	*/
	{ 0x05, 0x55 },	/* AK4671_MIC_AMP_GAIN			(0x05)	*/
	{ 0x06, 0x00 },	/* AK4671_MIXING_POWER_MANAGEMENT0	(0x06)	*/
	{ 0x07, 0x00 },	/* AK4671_MIXING_POWER_MANAGEMENT1	(0x07)	*/
	{ 0x08, 0xb5 },	/* AK4671_OUTPUT_VOLUME_CONTROL		(0x08)	*/
	{ 0x09, 0x00 },	/* AK4671_LOUT1_SIGNAL_SELECT		(0x09)	*/
	{ 0x0a, 0x00 },	/* AK4671_ROUT1_SIGNAL_SELECT		(0x0a)	*/
	{ 0x0b, 0x00 },	/* AK4671_LOUT2_SIGNAL_SELECT		(0x0b)	*/
	{ 0x0c, 0x00 },	/* AK4671_ROUT2_SIGNAL_SELECT		(0x0c)	*/
	{ 0x0d, 0x00 },	/* AK4671_LOUT3_SIGNAL_SELECT		(0x0d)	*/
	{ 0x0e, 0x00 },	/* AK4671_ROUT3_SIGNAL_SELECT		(0x0e)	*/
	{ 0x0f, 0x00 },	/* AK4671_LOUT1_POWER_MANAGERMENT	(0x0f)	*/
	{ 0x10, 0x00 },	/* AK4671_LOUT2_POWER_MANAGERMENT	(0x10)	*/
	{ 0x11, 0x80 },	/* AK4671_LOUT3_POWER_MANAGERMENT	(0x11)	*/
	{ 0x12, 0x91 },	/* AK4671_LCH_INPUT_VOLUME_CONTROL	(0x12)	*/
	{ 0x13, 0x91 },	/* AK4671_RCH_INPUT_VOLUME_CONTROL	(0x13)	*/
	{ 0x14, 0xe1 },	/* AK4671_ALC_REFERENCE_SELECT		(0x14)	*/
	{ 0x15, 0x00 },	/* AK4671_DIGITAL_MIXING_CONTROL	(0x15)	*/
	{ 0x16, 0x00 },	/* AK4671_ALC_TIMER_SELECT		(0x16)	*/
	{ 0x17, 0x00 },	/* AK4671_ALC_MODE_CONTROL		(0x17)	*/
	{ 0x18, 0x02 },	/* AK4671_MODE_CONTROL1			(0x18)	*/
	{ 0x19, 0x01 },	/* AK4671_MODE_CONTROL2			(0x19)	*/
	{ 0x1a, 0x18 },	/* AK4671_LCH_OUTPUT_VOLUME_CONTROL	(0x1a)	*/
	{ 0x1b, 0x18 },	/* AK4671_RCH_OUTPUT_VOLUME_CONTROL	(0x1b)	*/
	{ 0x1c, 0x00 },	/* AK4671_SIDETONE_A_CONTROL		(0x1c)	*/
	{ 0x1d, 0x02 },	/* AK4671_DIGITAL_FILTER_SELECT		(0x1d)	*/
	{ 0x1e, 0x00 },	/* AK4671_FIL3_COEFFICIENT0		(0x1e)	*/
	{ 0x1f, 0x00 },	/* AK4671_FIL3_COEFFICIENT1		(0x1f)	*/
	{ 0x20, 0x00 },	/* AK4671_FIL3_COEFFICIENT2		(0x20)	*/
	{ 0x21, 0x00 },	/* AK4671_FIL3_COEFFICIENT3		(0x21)	*/
	{ 0x22, 0x00 },	/* AK4671_EQ_COEFFICIENT0		(0x22)	*/
	{ 0x23, 0x00 },	/* AK4671_EQ_COEFFICIENT1		(0x23)	*/
	{ 0x24, 0x00 },	/* AK4671_EQ_COEFFICIENT2		(0x24)	*/
	{ 0x25, 0x00 },	/* AK4671_EQ_COEFFICIENT3		(0x25)	*/
	{ 0x26, 0x00 },	/* AK4671_EQ_COEFFICIENT4		(0x26)	*/
	{ 0x27, 0x00 },	/* AK4671_EQ_COEFFICIENT5		(0x27)	*/
	{ 0x28, 0xa9 },	/* AK4671_FIL1_COEFFICIENT0		(0x28)	*/
	{ 0x29, 0x1f },	/* AK4671_FIL1_COEFFICIENT1		(0x29)	*/
	{ 0x2a, 0xad },	/* AK4671_FIL1_COEFFICIENT2		(0x2a)	*/
	{ 0x2b, 0x20 },	/* AK4671_FIL1_COEFFICIENT3		(0x2b)	*/
	{ 0x2c, 0x00 },	/* AK4671_FIL2_COEFFICIENT0		(0x2c)	*/
	{ 0x2d, 0x00 },	/* AK4671_FIL2_COEFFICIENT1		(0x2d)	*/
	{ 0x2e, 0x00 },	/* AK4671_FIL2_COEFFICIENT2		(0x2e)	*/
	{ 0x2f, 0x00 },	/* AK4671_FIL2_COEFFICIENT3		(0x2f)	*/
	{ 0x30, 0x00 },	/* AK4671_DIGITAL_FILTER_SELECT2	(0x30)	*/

	{ 0x32, 0x00 },	/* AK4671_E1_COEFFICIENT0		(0x32)	*/
	{ 0x33, 0x00 },	/* AK4671_E1_COEFFICIENT1		(0x33)	*/
	{ 0x34, 0x00 },	/* AK4671_E1_COEFFICIENT2		(0x34)	*/
	{ 0x35, 0x00 },	/* AK4671_E1_COEFFICIENT3		(0x35)	*/
	{ 0x36, 0x00 },	/* AK4671_E1_COEFFICIENT4		(0x36)	*/
	{ 0x37, 0x00 },	/* AK4671_E1_COEFFICIENT5		(0x37)	*/
	{ 0x38, 0x00 },	/* AK4671_E2_COEFFICIENT0		(0x38)	*/
	{ 0x39, 0x00 },	/* AK4671_E2_COEFFICIENT1		(0x39)	*/
	{ 0x3a, 0x00 },	/* AK4671_E2_COEFFICIENT2		(0x3a)	*/
	{ 0x3b, 0x00 },	/* AK4671_E2_COEFFICIENT3		(0x3b)	*/
	{ 0x3c, 0x00 },	/* AK4671_E2_COEFFICIENT4		(0x3c)	*/
	{ 0x3d, 0x00 },	/* AK4671_E2_COEFFICIENT5		(0x3d)	*/
	{ 0x3e, 0x00 },	/* AK4671_E3_COEFFICIENT0		(0x3e)	*/
	{ 0x3f, 0x00 },	/* AK4671_E3_COEFFICIENT1		(0x3f)	*/
	{ 0x40, 0x00 },	/* AK4671_E3_COEFFICIENT2		(0x40)	*/
	{ 0x41, 0x00 },	/* AK4671_E3_COEFFICIENT3		(0x41)	*/
	{ 0x42, 0x00 },	/* AK4671_E3_COEFFICIENT4		(0x42)	*/

Annotation

Immediate include surface: `linux/module.h`, `linux/init.h`, `linux/i2c.h`, `linux/delay.h`, `linux/regmap.h`, `linux/slab.h`, `sound/soc.h`, `sound/initval.h`.
Detected declarations: `function ak4671_out2_event`, `function ak4671_hw_params`, `function ak4671_set_dai_sysclk`, `function ak4671_set_dai_fmt`, `function ak4671_set_bias_level`, `function ak4671_i2c_probe`.
Atlas domain: Driver Families / sound/soc.
Implementation status: source implementation candidate.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.