Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 662 insertions, 0 deletions

diff --git a/sound/soc/codecs/ak4458.c b/sound/soc/codecs/ak4458.c
new file mode 100644
index 000000000..0b35b84ab
--- /dev/null
+++ b/sound/soc/codecs/ak4458.c
@@ -0,0 +1,662 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Audio driver for AK4458 DAC
+//
+// Copyright (C) 2016 Asahi Kasei Microdevices Corporation
+// Copyright 2018 NXP
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <sound/initval.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/tlv.h>
+
+#include "ak4458.h"
+
+/* AK4458 Codec Private Data */
+struct ak4458_priv {
+	struct device *dev;
+	struct regmap *regmap;
+	struct gpio_desc *reset_gpiod;
+	struct gpio_desc *mute_gpiod;
+	int digfil;	/* SSLOW, SD, SLOW bits */
+	int fs;		/* sampling rate */
+	int fmt;
+	int slots;
+	int slot_width;
+};
+
+static const struct reg_default ak4458_reg_defaults[] = {
+	{ 0x00, 0x0C },	/*	0x00	AK4458_00_CONTROL1	*/
+	{ 0x01, 0x22 },	/*	0x01	AK4458_01_CONTROL2	*/
+	{ 0x02, 0x00 },	/*	0x02	AK4458_02_CONTROL3	*/
+	{ 0x03, 0xFF },	/*	0x03	AK4458_03_LCHATT	*/
+	{ 0x04, 0xFF },	/*	0x04	AK4458_04_RCHATT	*/
+	{ 0x05, 0x00 },	/*	0x05	AK4458_05_CONTROL4	*/
+	{ 0x06, 0x00 },	/*	0x06	AK4458_06_DSD1		*/
+	{ 0x07, 0x03 },	/*	0x07	AK4458_07_CONTROL5	*/
+	{ 0x08, 0x00 },	/*	0x08	AK4458_08_SOUND_CONTROL	*/
+	{ 0x09, 0x00 },	/*	0x09	AK4458_09_DSD2		*/
+	{ 0x0A, 0x0D },	/*	0x0A	AK4458_0A_CONTROL6	*/
+	{ 0x0B, 0x0C },	/*	0x0B	AK4458_0B_CONTROL7	*/
+	{ 0x0C, 0x00 },	/*	0x0C	AK4458_0C_CONTROL8	*/
+	{ 0x0D, 0x00 },	/*	0x0D	AK4458_0D_CONTROL9	*/
+	{ 0x0E, 0x50 },	/*	0x0E	AK4458_0E_CONTROL10	*/
+	{ 0x0F, 0xFF },	/*	0x0F	AK4458_0F_L2CHATT	*/
+	{ 0x10, 0xFF },	/*	0x10	AK4458_10_R2CHATT	*/
+	{ 0x11, 0xFF },	/*	0x11	AK4458_11_L3CHATT	*/
+	{ 0x12, 0xFF },	/*	0x12	AK4458_12_R3CHATT	*/
+	{ 0x13, 0xFF },	/*	0x13	AK4458_13_L4CHATT	*/
+	{ 0x14, 0xFF },	/*	0x14	AK4458_14_R4CHATT	*/
+};
+
+/*
+ * Volume control:
+ * from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB)
+ */
+static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
+
+/*
+ * DEM1 bit DEM0 bit Mode
+ * 0 0 44.1kHz
+ * 0 1 OFF (default)
+ * 1 0 48kHz
+ * 1 1 32kHz
+ */
+static const char * const ak4458_dem_select_texts[] = {
+	"44.1kHz", "OFF", "48kHz", "32kHz"
+};
+
+/*
+ * SSLOW, SD, SLOW bits Digital Filter Setting
+ * 0, 0, 0 : Sharp Roll-Off Filter
+ * 0, 0, 1 : Slow Roll-Off Filter
+ * 0, 1, 0 : Short delay Sharp Roll-Off Filter
+ * 0, 1, 1 : Short delay Slow Roll-Off Filter
+ * 1, *, * : Super Slow Roll-Off Filter
+ */
+static const char * const ak4458_digfil_select_texts[] = {
+	"Sharp Roll-Off Filter",
+	"Slow Roll-Off Filter",
+	"Short delay Sharp Roll-Off Filter",
+	"Short delay Slow Roll-Off Filter",
+	"Super Slow Roll-Off Filter"
+};
+
+/*
+ * DZFB: Inverting Enable of DZF
+ * 0: DZF goes H at Zero Detection
+ * 1: DZF goes L at Zero Detection
+ */
+static const char * const ak4458_dzfb_select_texts[] = {"H", "L"};
+
+/*
+ * SC1-0 bits: Sound Mode Setting
+ * 0 0 : Sound Mode 0
+ * 0 1 : Sound Mode 1
+ * 1 0 : Sound Mode 2
+ * 1 1 : Reserved
+ */
+static const char * const ak4458_sc_select_texts[] = {
+	"Sound Mode 0", "Sound Mode 1", "Sound Mode 2"
+};
+
+/* FIR2-0 bits: FIR Filter Mode Setting */
+static const char * const ak4458_fir_select_texts[] = {
+	"Mode 0", "Mode 1", "Mode 2", "Mode 3",
+	"Mode 4", "Mode 5", "Mode 6", "Mode 7",
+};
+
+/* ATS1-0 bits Attenuation Speed */
+static const char * const ak4458_ats_select_texts[] = {
+	"4080/fs", "2040/fs", "510/fs", "255/fs",
+};
+
+/* DIF2 bit Audio Interface Format Setting(BICK fs) */
+static const char * const ak4458_dif_select_texts[] = {"32fs,48fs", "64fs",};
+
+static const struct soc_enum ak4458_dac1_dem_enum =
+	SOC_ENUM_SINGLE(AK4458_01_CONTROL2, 1,
+			ARRAY_SIZE(ak4458_dem_select_texts),
+			ak4458_dem_select_texts);
+static const struct soc_enum ak4458_dac2_dem_enum =
+	SOC_ENUM_SINGLE(AK4458_0A_CONTROL6, 0,
+			ARRAY_SIZE(ak4458_dem_select_texts),
+			ak4458_dem_select_texts);
+static const struct soc_enum ak4458_dac3_dem_enum =
+	SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 4,
+			ARRAY_SIZE(ak4458_dem_select_texts),
+			ak4458_dem_select_texts);
+static const struct soc_enum ak4458_dac4_dem_enum =
+	SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 6,
+			ARRAY_SIZE(ak4458_dem_select_texts),
+			ak4458_dem_select_texts);
+static const struct soc_enum ak4458_digfil_enum =
+	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4458_digfil_select_texts),
+			    ak4458_digfil_select_texts);
+static const struct soc_enum ak4458_dzfb_enum =
+	SOC_ENUM_SINGLE(AK4458_02_CONTROL3, 2,
+			ARRAY_SIZE(ak4458_dzfb_select_texts),
+			ak4458_dzfb_select_texts);
+static const struct soc_enum ak4458_sm_enum =
+	SOC_ENUM_SINGLE(AK4458_08_SOUND_CONTROL, 0,
+			ARRAY_SIZE(ak4458_sc_select_texts),
+			ak4458_sc_select_texts);
+static const struct soc_enum ak4458_fir_enum =
+	SOC_ENUM_SINGLE(AK4458_0C_CONTROL8, 0,
+			ARRAY_SIZE(ak4458_fir_select_texts),
+			ak4458_fir_select_texts);
+static const struct soc_enum ak4458_ats_enum =
+	SOC_ENUM_SINGLE(AK4458_0B_CONTROL7, 6,
+			ARRAY_SIZE(ak4458_ats_select_texts),
+			ak4458_ats_select_texts);
+static const struct soc_enum ak4458_dif_enum =
+	SOC_ENUM_SINGLE(AK4458_00_CONTROL1, 3,
+			ARRAY_SIZE(ak4458_dif_select_texts),
+			ak4458_dif_select_texts);
+
+static int get_digfil(struct snd_kcontrol *kcontrol,
+		      struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+	struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
+
+	ucontrol->value.enumerated.item[0] = ak4458->digfil;
+
+	return 0;
+}
+
+static int set_digfil(struct snd_kcontrol *kcontrol,
+		      struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+	struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
+	int num;
+
+	num = ucontrol->value.enumerated.item[0];
+	if (num > 4)
+		return -EINVAL;
+
+	ak4458->digfil = num;
+
+	/* write SD bit */
+	snd_soc_component_update_bits(component, AK4458_01_CONTROL2,
+			    AK4458_SD_MASK,
+			    ((ak4458->digfil & 0x02) << 4));
+
+	/* write SLOW bit */
+	snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
+			    AK4458_SLOW_MASK,
+			    (ak4458->digfil & 0x01));
+
+	/* write SSLOW bit */
+	snd_soc_component_update_bits(component, AK4458_05_CONTROL4,
+			    AK4458_SSLOW_MASK,
+			    ((ak4458->digfil & 0x04) >> 2));
+
+	return 0;
+}
+
+static const struct snd_kcontrol_new ak4458_snd_controls[] = {
+	SOC_DOUBLE_R_TLV("DAC1 Playback Volume", AK4458_03_LCHATT,
+			 AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
+	SOC_DOUBLE_R_TLV("DAC2 Playback Volume", AK4458_0F_L2CHATT,
+			 AK4458_10_R2CHATT, 0, 0xFF, 0, dac_tlv),
+	SOC_DOUBLE_R_TLV("DAC3 Playback Volume", AK4458_11_L3CHATT,
+			 AK4458_12_R3CHATT, 0, 0xFF, 0, dac_tlv),
+	SOC_DOUBLE_R_TLV("DAC4 Playback Volume", AK4458_13_L4CHATT,
+			 AK4458_14_R4CHATT, 0, 0xFF, 0, dac_tlv),
+	SOC_ENUM("AK4458 De-emphasis Response DAC1", ak4458_dac1_dem_enum),
+	SOC_ENUM("AK4458 De-emphasis Response DAC2", ak4458_dac2_dem_enum),
+	SOC_ENUM("AK4458 De-emphasis Response DAC3", ak4458_dac3_dem_enum),
+	SOC_ENUM("AK4458 De-emphasis Response DAC4", ak4458_dac4_dem_enum),
+	SOC_ENUM_EXT("AK4458 Digital Filter Setting", ak4458_digfil_enum,
+		     get_digfil, set_digfil),
+	SOC_ENUM("AK4458 Inverting Enable of DZFB", ak4458_dzfb_enum),
+	SOC_ENUM("AK4458 Sound Mode", ak4458_sm_enum),
+	SOC_ENUM("AK4458 FIR Filter Mode Setting", ak4458_fir_enum),
+	SOC_ENUM("AK4458 Attenuation transition Time Setting",
+		 ak4458_ats_enum),
+	SOC_ENUM("AK4458 BICK fs Setting", ak4458_dif_enum),
+};
+
+/* ak4458 dapm widgets */
+static const struct snd_soc_dapm_widget ak4458_dapm_widgets[] = {
+	SND_SOC_DAPM_DAC("AK4458 DAC1", NULL, AK4458_0A_CONTROL6, 2, 0),/*pw*/
+	SND_SOC_DAPM_AIF_IN("AK4458 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_OUTPUT("AK4458 AOUTA"),
+
+	SND_SOC_DAPM_DAC("AK4458 DAC2", NULL, AK4458_0A_CONTROL6, 3, 0),/*pw*/
+	SND_SOC_DAPM_OUTPUT("AK4458 AOUTB"),
+
+	SND_SOC_DAPM_DAC("AK4458 DAC3", NULL, AK4458_0B_CONTROL7, 2, 0),/*pw*/
+	SND_SOC_DAPM_OUTPUT("AK4458 AOUTC"),
+
+	SND_SOC_DAPM_DAC("AK4458 DAC4", NULL, AK4458_0B_CONTROL7, 3, 0),/*pw*/
+	SND_SOC_DAPM_OUTPUT("AK4458 AOUTD"),
+};
+
+static const struct snd_soc_dapm_route ak4458_intercon[] = {
+	{"AK4458 DAC1",		NULL,	"AK4458 SDTI"},
+	{"AK4458 AOUTA",	NULL,	"AK4458 DAC1"},
+
+	{"AK4458 DAC2",		NULL,	"AK4458 SDTI"},
+	{"AK4458 AOUTB",	NULL,	"AK4458 DAC2"},
+
+	{"AK4458 DAC3",		NULL,	"AK4458 SDTI"},
+	{"AK4458 AOUTC",	NULL,	"AK4458 DAC3"},
+
+	{"AK4458 DAC4",		NULL,	"AK4458 SDTI"},
+	{"AK4458 AOUTD",	NULL,	"AK4458 DAC4"},
+};
+
+static int ak4458_rstn_control(struct snd_soc_component *component, int bit)
+{
+	int ret;
+
+	if (bit)
+		ret = snd_soc_component_update_bits(component,
+					  AK4458_00_CONTROL1,
+					  AK4458_RSTN_MASK,
+					  0x1);
+	else
+		ret = snd_soc_component_update_bits(component,
+					  AK4458_00_CONTROL1,
+					  AK4458_RSTN_MASK,
+					  0x0);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int ak4458_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *params,
+			    struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
+	int pcm_width = max(params_physical_width(params), ak4458->slot_width);
+	int nfs1;
+	u8 format;
+
+	nfs1 = params_rate(params);
+	ak4458->fs = nfs1;
+
+	/* Master Clock Frequency Auto Setting Mode Enable */
+	snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 0x80, 0x80);
+
+	switch (pcm_width) {
+	case 16:
+		if (ak4458->fmt == SND_SOC_DAIFMT_I2S)
+			format = AK4458_DIF_24BIT_I2S;
+		else
+			format = AK4458_DIF_16BIT_LSB;
+		break;
+	case 32:
+		switch (ak4458->fmt) {
+		case SND_SOC_DAIFMT_I2S:
+			format = AK4458_DIF_32BIT_I2S;
+			break;
+		case SND_SOC_DAIFMT_LEFT_J:
+			format = AK4458_DIF_32BIT_MSB;
+			break;
+		case SND_SOC_DAIFMT_RIGHT_J:
+			format = AK4458_DIF_32BIT_LSB;
+			break;
+		case SND_SOC_DAIFMT_DSP_B:
+			format = AK4458_DIF_32BIT_MSB;
+			break;
+		default:
+			return -EINVAL;
+		}
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
+			    AK4458_DIF_MASK, format);
+
+	ak4458_rstn_control(component, 0);
+	ak4458_rstn_control(component, 1);
+
+	return 0;
+}
+
+static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	struct snd_soc_component *component = dai->component;
+	struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBS_CFS: /* Slave Mode */
+		break;
+	case SND_SOC_DAIFMT_CBM_CFM: /* Master Mode is not supported */
+	case SND_SOC_DAIFMT_CBS_CFM:
+	case SND_SOC_DAIFMT_CBM_CFS:
+	default:
+		dev_err(component->dev, "Master mode unsupported\n");
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+	case SND_SOC_DAIFMT_LEFT_J:
+	case SND_SOC_DAIFMT_RIGHT_J:
+	case SND_SOC_DAIFMT_DSP_B:
+		ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
+		break;
+	default:
+		dev_err(component->dev, "Audio format 0x%02X unsupported\n",
+			fmt & SND_SOC_DAIFMT_FORMAT_MASK);
+		return -EINVAL;
+	}
+
+	ak4458_rstn_control(component, 0);
+	ak4458_rstn_control(component, 1);
+
+	return 0;
+}
+
+static const int att_speed[] = { 4080, 2040, 510, 255 };
+
+static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute)
+{
+	struct snd_soc_component *component = dai->component;
+	struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
+	int nfs, ndt, ret, reg;
+	int ats;
+
+	nfs = ak4458->fs;
+
+	reg = snd_soc_component_read32(component, AK4458_0B_CONTROL7);
+	ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT;
+
+	ndt = att_speed[ats] / (nfs / 1000);
+
+	if (mute) {
+		ret = snd_soc_component_update_bits(component, AK4458_01_CONTROL2,  0x01, 1);
+		mdelay(ndt);
+		if (ak4458->mute_gpiod)
+			gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
+	} else {
+		if (ak4458->mute_gpiod)
+			gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
+		ret = snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 0);
+		mdelay(ndt);
+	}
+
+	return 0;
+}
+
+static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
+			       unsigned int rx_mask, int slots, int slot_width)
+{
+	struct snd_soc_component *component = dai->component;
+	struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
+	int mode;
+
+	ak4458->slots = slots;
+	ak4458->slot_width = slot_width;
+
+	switch (slots * slot_width) {
+	case 128:
+		mode = AK4458_MODE_TDM128;
+		break;
+	case 256:
+		mode = AK4458_MODE_TDM256;
+		break;
+	case 512:
+		mode = AK4458_MODE_TDM512;
+		break;
+	default:
+		mode = AK4458_MODE_NORMAL;
+		break;
+	}
+
+	snd_soc_component_update_bits(component, AK4458_0A_CONTROL6,
+			    AK4458_MODE_MASK,
+			    mode);
+
+	return 0;
+}
+
+#define AK4458_FORMATS	(SNDRV_PCM_FMTBIT_S16_LE |\
+			 SNDRV_PCM_FMTBIT_S24_LE |\
+			 SNDRV_PCM_FMTBIT_S32_LE)
+
+static const unsigned int ak4458_rates[] = {
+	8000, 11025,  16000, 22050,
+	32000, 44100, 48000, 88200,
+	96000, 176400, 192000, 352800,
+	384000, 705600, 768000, 1411200,
+	2822400,
+};
+
+static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = {
+	.count = ARRAY_SIZE(ak4458_rates),
+	.list = ak4458_rates,
+};
+
+static int ak4458_startup(struct snd_pcm_substream *substream,
+			  struct snd_soc_dai *dai)
+{
+	int ret;
+
+	ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
+					 SNDRV_PCM_HW_PARAM_RATE,
+					 &ak4458_rate_constraints);
+
+	return ret;
+}
+
+static struct snd_soc_dai_ops ak4458_dai_ops = {
+	.startup        = ak4458_startup,
+	.hw_params	= ak4458_hw_params,
+	.set_fmt	= ak4458_set_dai_fmt,
+	.digital_mute	= ak4458_set_dai_mute,
+	.set_tdm_slot	= ak4458_set_tdm_slot,
+};
+
+static struct snd_soc_dai_driver ak4458_dai = {
+	.name = "ak4458-aif",
+	.playback = {
+		.stream_name = "Playback",
+		.channels_min = 1,
+		.channels_max = 8,
+		.rates = SNDRV_PCM_RATE_KNOT,
+		.formats = AK4458_FORMATS,
+	},
+	.ops = &ak4458_dai_ops,
+};
+
+static void ak4458_power_off(struct ak4458_priv *ak4458)
+{
+	if (ak4458->reset_gpiod) {
+		gpiod_set_value_cansleep(ak4458->reset_gpiod, 0);
+		usleep_range(1000, 2000);
+	}
+}
+
+static void ak4458_power_on(struct ak4458_priv *ak4458)
+{
+	if (ak4458->reset_gpiod) {
+		gpiod_set_value_cansleep(ak4458->reset_gpiod, 1);
+		usleep_range(1000, 2000);
+	}
+}
+
+static int ak4458_init(struct snd_soc_component *component)
+{
+	struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
+	int ret;
+
+	/* External Mute ON */
+	if (ak4458->mute_gpiod)
+		gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
+
+	ak4458_power_on(ak4458);
+
+	ret = snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
+			    0x80, 0x80);   /* ACKS bit = 1; 10000000 */
+	if (ret < 0)
+		return ret;
+
+	return ak4458_rstn_control(component, 1);
+}
+
+static int ak4458_probe(struct snd_soc_component *component)
+{
+	struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
+
+	ak4458->fs = 48000;
+
+	return ak4458_init(component);
+}
+
+static void ak4458_remove(struct snd_soc_component *component)
+{
+	struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
+
+	ak4458_power_off(ak4458);
+}
+
+#ifdef CONFIG_PM
+static int __maybe_unused ak4458_runtime_suspend(struct device *dev)
+{
+	struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
+
+	regcache_cache_only(ak4458->regmap, true);
+
+	ak4458_power_off(ak4458);
+
+	if (ak4458->mute_gpiod)
+		gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
+
+	return 0;
+}
+
+static int __maybe_unused ak4458_runtime_resume(struct device *dev)
+{
+	struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
+
+	if (ak4458->mute_gpiod)
+		gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
+
+	ak4458_power_off(ak4458);
+	ak4458_power_on(ak4458);
+
+	regcache_cache_only(ak4458->regmap, false);
+	regcache_mark_dirty(ak4458->regmap);
+
+	return regcache_sync(ak4458->regmap);
+}
+#endif /* CONFIG_PM */
+
+static const struct snd_soc_component_driver soc_codec_dev_ak4458 = {
+	.probe			= ak4458_probe,
+	.remove			= ak4458_remove,
+	.controls		= ak4458_snd_controls,
+	.num_controls		= ARRAY_SIZE(ak4458_snd_controls),
+	.dapm_widgets		= ak4458_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(ak4458_dapm_widgets),
+	.dapm_routes		= ak4458_intercon,
+	.num_dapm_routes	= ARRAY_SIZE(ak4458_intercon),
+	.idle_bias_on		= 1,
+	.use_pmdown_time	= 1,
+	.endianness		= 1,
+	.non_legacy_dai_naming	= 1,
+};
+
+static const struct regmap_config ak4458_regmap = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = AK4458_14_R4CHATT,
+	.reg_defaults = ak4458_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults),
+	.cache_type = REGCACHE_RBTREE,
+};
+
+static const struct dev_pm_ops ak4458_pm = {
+	SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
+};
+
+static int ak4458_i2c_probe(struct i2c_client *i2c)
+{
+	struct ak4458_priv *ak4458;
+	int ret;
+
+	ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL);
+	if (!ak4458)
+		return -ENOMEM;
+
+	ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap);
+	if (IS_ERR(ak4458->regmap))
+		return PTR_ERR(ak4458->regmap);
+
+	i2c_set_clientdata(i2c, ak4458);
+	ak4458->dev = &i2c->dev;
+
+	ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset",
+						      GPIOD_OUT_LOW);
+	if (IS_ERR(ak4458->reset_gpiod))
+		return PTR_ERR(ak4458->reset_gpiod);
+
+	ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute",
+						     GPIOD_OUT_LOW);
+	if (IS_ERR(ak4458->mute_gpiod))
+		return PTR_ERR(ak4458->mute_gpiod);
+
+	ret = devm_snd_soc_register_component(ak4458->dev, &soc_codec_dev_ak4458,
+				     &ak4458_dai, 1);
+	if (ret < 0) {
+		dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret);
+		return ret;
+	}
+
+	pm_runtime_enable(&i2c->dev);
+
+	return 0;
+}
+
+static int ak4458_i2c_remove(struct i2c_client *i2c)
+{
+	pm_runtime_disable(&i2c->dev);
+
+	return 0;
+}
+
+static const struct of_device_id ak4458_of_match[] = {
+	{ .compatible = "asahi-kasei,ak4458", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, ak4458_of_match);
+
+static struct i2c_driver ak4458_i2c_driver = {
+	.driver = {
+		.name = "ak4458",
+		.pm = &ak4458_pm,
+		.of_match_table = ak4458_of_match,
+		},
+	.probe_new = ak4458_i2c_probe,
+	.remove = ak4458_i2c_remove,
+};
+
+module_i2c_driver(ak4458_i2c_driver);
+
+MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>");
+MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>");
+MODULE_DESCRIPTION("ASoC AK4458 DAC driver");
+MODULE_LICENSE("GPL v2");