Adding upstream version 4.19.249.upstream/4.19.249

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

1 files changed, 700 insertions, 0 deletions

diff --git a/sound/soc/codecs/ak4613.c b/sound/soc/codecs/ak4613.c
new file mode 100644
index 000000000..c1181a207
--- /dev/null
+++ b/sound/soc/codecs/ak4613.c
@@ -0,0 +1,700 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// ak4613.c  --  Asahi Kasei ALSA Soc Audio driver
+//
+// Copyright (C) 2015 Renesas Electronics Corporation
+// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+//
+// Based on ak4642.c by Kuninori Morimoto
+// Based on wm8731.c by Richard Purdie
+// Based on ak4535.c by Richard Purdie
+// Based on wm8753.c by Liam Girdwood
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/of_device.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+#include <sound/tlv.h>
+
+#define PW_MGMT1	0x00 /* Power Management 1 */
+#define PW_MGMT2	0x01 /* Power Management 2 */
+#define PW_MGMT3	0x02 /* Power Management 3 */
+#define CTRL1		0x03 /* Control 1 */
+#define CTRL2		0x04 /* Control 2 */
+#define DEMP1		0x05 /* De-emphasis1 */
+#define DEMP2		0x06 /* De-emphasis2 */
+#define OFD		0x07 /* Overflow Detect */
+#define ZRD		0x08 /* Zero Detect */
+#define ICTRL		0x09 /* Input Control */
+#define OCTRL		0x0a /* Output Control */
+#define LOUT1		0x0b /* LOUT1 Volume Control */
+#define ROUT1		0x0c /* ROUT1 Volume Control */
+#define LOUT2		0x0d /* LOUT2 Volume Control */
+#define ROUT2		0x0e /* ROUT2 Volume Control */
+#define LOUT3		0x0f /* LOUT3 Volume Control */
+#define ROUT3		0x10 /* ROUT3 Volume Control */
+#define LOUT4		0x11 /* LOUT4 Volume Control */
+#define ROUT4		0x12 /* ROUT4 Volume Control */
+#define LOUT5		0x13 /* LOUT5 Volume Control */
+#define ROUT5		0x14 /* ROUT5 Volume Control */
+#define LOUT6		0x15 /* LOUT6 Volume Control */
+#define ROUT6		0x16 /* ROUT6 Volume Control */
+
+/* PW_MGMT1 */
+#define RSTN		BIT(0)
+#define PMDAC		BIT(1)
+#define PMADC		BIT(2)
+#define PMVR		BIT(3)
+
+/* PW_MGMT2 */
+#define PMAD_ALL	0x7
+
+/* PW_MGMT3 */
+#define PMDA_ALL	0x3f
+
+/* CTRL1 */
+#define DIF0		BIT(3)
+#define DIF1		BIT(4)
+#define DIF2		BIT(5)
+#define TDM0		BIT(6)
+#define TDM1		BIT(7)
+#define NO_FMT		(0xff)
+#define FMT_MASK	(0xf8)
+
+/* CTRL2 */
+#define DFS_MASK		(3 << 2)
+#define DFS_NORMAL_SPEED	(0 << 2)
+#define DFS_DOUBLE_SPEED	(1 << 2)
+#define DFS_QUAD_SPEED		(2 << 2)
+
+/* ICTRL */
+#define ICTRL_MASK	(0x3)
+
+/* OCTRL */
+#define OCTRL_MASK	(0x3F)
+
+struct ak4613_formats {
+	unsigned int width;
+	unsigned int fmt;
+};
+
+struct ak4613_interface {
+	struct ak4613_formats capture;
+	struct ak4613_formats playback;
+};
+
+struct ak4613_priv {
+	struct mutex lock;
+	const struct ak4613_interface *iface;
+	struct snd_pcm_hw_constraint_list constraint;
+	struct work_struct dummy_write_work;
+	struct snd_soc_component *component;
+	unsigned int rate;
+	unsigned int sysclk;
+
+	unsigned int fmt;
+	u8 oc;
+	u8 ic;
+	int cnt;
+};
+
+/*
+ * Playback Volume
+ *
+ * max : 0x00 : 0 dB
+ *       ( 0.5 dB step )
+ * min : 0xFE : -127.0 dB
+ * mute: 0xFF
+ */
+static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
+
+static const struct snd_kcontrol_new ak4613_snd_controls[] = {
+	SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
+			 0, 0xFF, 1, out_tlv),
+	SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
+			 0, 0xFF, 1, out_tlv),
+	SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
+			 0, 0xFF, 1, out_tlv),
+	SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
+			 0, 0xFF, 1, out_tlv),
+	SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
+			 0, 0xFF, 1, out_tlv),
+	SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
+			 0, 0xFF, 1, out_tlv),
+};
+
+static const struct reg_default ak4613_reg[] = {
+	{ 0x0,  0x0f }, { 0x1,  0x07 }, { 0x2,  0x3f }, { 0x3,  0x20 },
+	{ 0x4,  0x20 }, { 0x5,  0x55 }, { 0x6,  0x05 }, { 0x7,  0x07 },
+	{ 0x8,  0x0f }, { 0x9,  0x07 }, { 0xa,  0x3f }, { 0xb,  0x00 },
+	{ 0xc,  0x00 }, { 0xd,  0x00 }, { 0xe,  0x00 }, { 0xf,  0x00 },
+	{ 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
+	{ 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
+};
+
+#define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3)
+#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
+static const struct ak4613_interface ak4613_iface[] = {
+	/* capture */				/* playback */
+	/* [0] - [2] are not supported */
+	[3] = {	AUDIO_IFACE(24, LEFT_J),	AUDIO_IFACE(24, LEFT_J) },
+	[4] = {	AUDIO_IFACE(24, I2S),		AUDIO_IFACE(24, I2S) },
+};
+
+static const struct regmap_config ak4613_regmap_cfg = {
+	.reg_bits		= 8,
+	.val_bits		= 8,
+	.max_register		= 0x16,
+	.reg_defaults		= ak4613_reg,
+	.num_reg_defaults	= ARRAY_SIZE(ak4613_reg),
+	.cache_type		= REGCACHE_RBTREE,
+};
+
+static const struct of_device_id ak4613_of_match[] = {
+	{ .compatible = "asahi-kasei,ak4613",	.data = &ak4613_regmap_cfg },
+	{},
+};
+MODULE_DEVICE_TABLE(of, ak4613_of_match);
+
+static const struct i2c_device_id ak4613_i2c_id[] = {
+	{ "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
+
+static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
+
+	/* Outputs */
+	SND_SOC_DAPM_OUTPUT("LOUT1"),
+	SND_SOC_DAPM_OUTPUT("LOUT2"),
+	SND_SOC_DAPM_OUTPUT("LOUT3"),
+	SND_SOC_DAPM_OUTPUT("LOUT4"),
+	SND_SOC_DAPM_OUTPUT("LOUT5"),
+	SND_SOC_DAPM_OUTPUT("LOUT6"),
+
+	SND_SOC_DAPM_OUTPUT("ROUT1"),
+	SND_SOC_DAPM_OUTPUT("ROUT2"),
+	SND_SOC_DAPM_OUTPUT("ROUT3"),
+	SND_SOC_DAPM_OUTPUT("ROUT4"),
+	SND_SOC_DAPM_OUTPUT("ROUT5"),
+	SND_SOC_DAPM_OUTPUT("ROUT6"),
+
+	/* Inputs */
+	SND_SOC_DAPM_INPUT("LIN1"),
+	SND_SOC_DAPM_INPUT("LIN2"),
+
+	SND_SOC_DAPM_INPUT("RIN1"),
+	SND_SOC_DAPM_INPUT("RIN2"),
+
+	/* DAC */
+	SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
+	SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
+	SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
+	SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
+	SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
+	SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
+
+	/* ADC */
+	SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
+	SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
+};
+
+static const struct snd_soc_dapm_route ak4613_intercon[] = {
+	{"LOUT1", NULL, "DAC1"},
+	{"LOUT2", NULL, "DAC2"},
+	{"LOUT3", NULL, "DAC3"},
+	{"LOUT4", NULL, "DAC4"},
+	{"LOUT5", NULL, "DAC5"},
+	{"LOUT6", NULL, "DAC6"},
+
+	{"ROUT1", NULL, "DAC1"},
+	{"ROUT2", NULL, "DAC2"},
+	{"ROUT3", NULL, "DAC3"},
+	{"ROUT4", NULL, "DAC4"},
+	{"ROUT5", NULL, "DAC5"},
+	{"ROUT6", NULL, "DAC6"},
+
+	{"DAC1", NULL, "Playback"},
+	{"DAC2", NULL, "Playback"},
+	{"DAC3", NULL, "Playback"},
+	{"DAC4", NULL, "Playback"},
+	{"DAC5", NULL, "Playback"},
+	{"DAC6", NULL, "Playback"},
+
+	{"Capture", NULL, "ADC1"},
+	{"Capture", NULL, "ADC2"},
+
+	{"ADC1", NULL, "LIN1"},
+	{"ADC2", NULL, "LIN2"},
+
+	{"ADC1", NULL, "RIN1"},
+	{"ADC2", NULL, "RIN2"},
+};
+
+static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
+			       struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
+	struct device *dev = component->dev;
+
+	mutex_lock(&priv->lock);
+	priv->cnt--;
+	if (priv->cnt < 0) {
+		dev_err(dev, "unexpected counter error\n");
+		priv->cnt = 0;
+	}
+	if (!priv->cnt)
+		priv->iface = NULL;
+	mutex_unlock(&priv->lock);
+}
+
+static void ak4613_hw_constraints(struct ak4613_priv *priv,
+				  struct snd_pcm_runtime *runtime)
+{
+	static const unsigned int ak4613_rates[] = {
+		 32000,
+		 44100,
+		 48000,
+		 64000,
+		 88200,
+		 96000,
+		176400,
+		192000,
+	};
+	struct snd_pcm_hw_constraint_list *constraint = &priv->constraint;
+	unsigned int fs;
+	int i;
+
+	constraint->list	= ak4613_rates;
+	constraint->mask	= 0;
+	constraint->count	= 0;
+
+	/*
+	 * Slave Mode
+	 *	Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs
+	 *	Double: [64kHz, 96kHz] : 256fs
+	 *	Quad  : [128kHz,192kHz]: 128fs
+	 *
+	 * Master mode
+	 *	Normal: [32kHz, 48kHz] : 256fs or 512fs
+	 *	Double: [64kHz, 96kHz] : 256fs
+	 *	Quad  : [128kHz,192kHz]: 128fs
+	*/
+	for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) {
+		/* minimum fs on each range */
+		fs = (ak4613_rates[i] <= 96000) ? 256 : 128;
+
+		if (priv->sysclk >= ak4613_rates[i] * fs)
+			constraint->count = i + 1;
+	}
+
+	snd_pcm_hw_constraint_list(runtime, 0,
+				SNDRV_PCM_HW_PARAM_RATE, constraint);
+}
+
+static int ak4613_dai_startup(struct snd_pcm_substream *substream,
+			      struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
+
+	priv->cnt++;
+
+	ak4613_hw_constraints(priv, substream->runtime);
+
+	return 0;
+}
+
+static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai,
+				 int clk_id, unsigned int freq, int dir)
+{
+	struct snd_soc_component *component = codec_dai->component;
+	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
+
+	priv->sysclk = freq;
+
+	return 0;
+}
+
+static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	struct snd_soc_component *component = dai->component;
+	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
+
+	fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
+
+	switch (fmt) {
+	case SND_SOC_DAIFMT_LEFT_J:
+	case SND_SOC_DAIFMT_I2S:
+		priv->fmt = fmt;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface,
+				    int is_play,
+				    unsigned int fmt, unsigned int width)
+{
+	const struct ak4613_formats *fmts;
+
+	fmts = (is_play) ? &iface->playback : &iface->capture;
+
+	if (fmts->fmt != fmt)
+		return false;
+
+	if (fmts->width != width)
+		return false;
+
+	return true;
+}
+
+static int ak4613_dai_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 ak4613_priv *priv = snd_soc_component_get_drvdata(component);
+	const struct ak4613_interface *iface;
+	struct device *dev = component->dev;
+	unsigned int width = params_width(params);
+	unsigned int fmt = priv->fmt;
+	unsigned int rate;
+	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+	int i, ret;
+	u8 fmt_ctrl, ctrl2;
+
+	rate = params_rate(params);
+	switch (rate) {
+	case 32000:
+	case 44100:
+	case 48000:
+		ctrl2 = DFS_NORMAL_SPEED;
+		break;
+	case 64000:
+	case 88200:
+	case 96000:
+		ctrl2 = DFS_DOUBLE_SPEED;
+		break;
+	case 176400:
+	case 192000:
+		ctrl2 = DFS_QUAD_SPEED;
+		break;
+	default:
+		return -EINVAL;
+	}
+	priv->rate = rate;
+
+	/*
+	 * FIXME
+	 *
+	 * It doesn't support TDM at this point
+	 */
+	fmt_ctrl = NO_FMT;
+	ret = -EINVAL;
+	iface = NULL;
+
+	mutex_lock(&priv->lock);
+	if (priv->iface) {
+		if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
+			iface = priv->iface;
+	} else {
+		for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
+			if (!ak4613_dai_fmt_matching(ak4613_iface + i,
+						     is_play,
+						     fmt, width))
+				continue;
+			iface = ak4613_iface + i;
+			break;
+		}
+	}
+
+	if ((priv->iface == NULL) ||
+	    (priv->iface == iface)) {
+		priv->iface = iface;
+		ret = 0;
+	}
+	mutex_unlock(&priv->lock);
+
+	if (ret < 0)
+		goto hw_params_end;
+
+	fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);
+
+	snd_soc_component_update_bits(component, CTRL1, FMT_MASK, fmt_ctrl);
+	snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2);
+
+	snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic);
+	snd_soc_component_update_bits(component, OCTRL, OCTRL_MASK, priv->oc);
+
+hw_params_end:
+	if (ret < 0)
+		dev_warn(dev, "unsupported data width/format combination\n");
+
+	return ret;
+}
+
+static int ak4613_set_bias_level(struct snd_soc_component *component,
+				 enum snd_soc_bias_level level)
+{
+	u8 mgmt1 = 0;
+
+	switch (level) {
+	case SND_SOC_BIAS_ON:
+		mgmt1 |= RSTN;
+		/* fall through */
+	case SND_SOC_BIAS_PREPARE:
+		mgmt1 |= PMADC | PMDAC;
+		/* fall through */
+	case SND_SOC_BIAS_STANDBY:
+		mgmt1 |= PMVR;
+		/* fall through */
+	case SND_SOC_BIAS_OFF:
+	default:
+		break;
+	}
+
+	snd_soc_component_write(component, PW_MGMT1, mgmt1);
+
+	return 0;
+}
+
+static void ak4613_dummy_write(struct work_struct *work)
+{
+	struct ak4613_priv *priv = container_of(work,
+						struct ak4613_priv,
+						dummy_write_work);
+	struct snd_soc_component *component = priv->component;
+	unsigned int mgmt1;
+	unsigned int mgmt3;
+
+	/*
+	 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
+	 *
+	 * Note
+	 *
+	 * To avoid extra delay, we want to avoid preemption here,
+	 * but we can't. Because it uses I2C access which is using IRQ
+	 * and sleep. Thus, delay might be more than 5 LR clocks
+	 * see also
+	 *	ak4613_dai_trigger()
+	 */
+	udelay(5000000 / priv->rate);
+
+	snd_soc_component_read(component, PW_MGMT1, &mgmt1);
+	snd_soc_component_read(component, PW_MGMT3, &mgmt3);
+
+	snd_soc_component_write(component, PW_MGMT1, mgmt1);
+	snd_soc_component_write(component, PW_MGMT3, mgmt3);
+}
+
+static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd,
+			      struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
+
+	/*
+	 * FIXME
+	 *
+	 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
+	 * from Power Down Release. Otherwise, Playback volume will be 0dB.
+	 * To avoid complex multiple delay/dummy_write method from
+	 * ak4613_set_bias_level() / SND_SOC_DAPM_DAC_E("DACx", ...),
+	 * call it once here.
+	 *
+	 * But, unfortunately, we can't "write" here because here is atomic
+	 * context (It uses I2C access for writing).
+	 * Thus, use schedule_work() to switching to normal context
+	 * immediately.
+	 *
+	 * Note
+	 *
+	 * Calling ak4613_dummy_write() function might be delayed.
+	 * In such case, ak4613 volume might be temporarily 0dB when
+	 * beggining of playback.
+	 * see also
+	 *	ak4613_dummy_write()
+	 */
+
+	if ((cmd != SNDRV_PCM_TRIGGER_START) &&
+	    (cmd != SNDRV_PCM_TRIGGER_RESUME))
+		return 0;
+
+	if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
+		return  0;
+
+	priv->component = component;
+	schedule_work(&priv->dummy_write_work);
+
+	return 0;
+}
+
+static const struct snd_soc_dai_ops ak4613_dai_ops = {
+	.startup	= ak4613_dai_startup,
+	.shutdown	= ak4613_dai_shutdown,
+	.set_sysclk	= ak4613_dai_set_sysclk,
+	.set_fmt	= ak4613_dai_set_fmt,
+	.trigger	= ak4613_dai_trigger,
+	.hw_params	= ak4613_dai_hw_params,
+};
+
+#define AK4613_PCM_RATE		(SNDRV_PCM_RATE_32000  |\
+				 SNDRV_PCM_RATE_44100  |\
+				 SNDRV_PCM_RATE_48000  |\
+				 SNDRV_PCM_RATE_64000  |\
+				 SNDRV_PCM_RATE_88200  |\
+				 SNDRV_PCM_RATE_96000  |\
+				 SNDRV_PCM_RATE_176400 |\
+				 SNDRV_PCM_RATE_192000)
+#define AK4613_PCM_FMTBIT	(SNDRV_PCM_FMTBIT_S24_LE)
+
+static struct snd_soc_dai_driver ak4613_dai = {
+	.name = "ak4613-hifi",
+	.playback = {
+		.stream_name	= "Playback",
+		.channels_min	= 2,
+		.channels_max	= 2,
+		.rates		= AK4613_PCM_RATE,
+		.formats	= AK4613_PCM_FMTBIT,
+	},
+	.capture = {
+		.stream_name	= "Capture",
+		.channels_min	= 2,
+		.channels_max	= 2,
+		.rates		= AK4613_PCM_RATE,
+		.formats	= AK4613_PCM_FMTBIT,
+	},
+	.ops = &ak4613_dai_ops,
+	.symmetric_rates = 1,
+};
+
+static int ak4613_suspend(struct snd_soc_component *component)
+{
+	struct regmap *regmap = dev_get_regmap(component->dev, NULL);
+
+	regcache_cache_only(regmap, true);
+	regcache_mark_dirty(regmap);
+	return 0;
+}
+
+static int ak4613_resume(struct snd_soc_component *component)
+{
+	struct regmap *regmap = dev_get_regmap(component->dev, NULL);
+
+	regcache_cache_only(regmap, false);
+	return regcache_sync(regmap);
+}
+
+static const struct snd_soc_component_driver soc_component_dev_ak4613 = {
+	.suspend		= ak4613_suspend,
+	.resume			= ak4613_resume,
+	.set_bias_level		= ak4613_set_bias_level,
+	.controls		= ak4613_snd_controls,
+	.num_controls		= ARRAY_SIZE(ak4613_snd_controls),
+	.dapm_widgets		= ak4613_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(ak4613_dapm_widgets),
+	.dapm_routes		= ak4613_intercon,
+	.num_dapm_routes	= ARRAY_SIZE(ak4613_intercon),
+	.idle_bias_on		= 1,
+	.endianness		= 1,
+	.non_legacy_dai_naming	= 1,
+};
+
+static void ak4613_parse_of(struct ak4613_priv *priv,
+			    struct device *dev)
+{
+	struct device_node *np = dev->of_node;
+	char prop[32];
+	int i;
+
+	/* Input 1 - 2 */
+	for (i = 0; i < 2; i++) {
+		snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
+		if (!of_get_property(np, prop, NULL))
+			priv->ic |= 1 << i;
+	}
+
+	/* Output 1 - 6 */
+	for (i = 0; i < 6; i++) {
+		snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
+		if (!of_get_property(np, prop, NULL))
+			priv->oc |= 1 << i;
+	}
+}
+
+static int ak4613_i2c_probe(struct i2c_client *i2c,
+			    const struct i2c_device_id *id)
+{
+	struct device *dev = &i2c->dev;
+	struct device_node *np = dev->of_node;
+	const struct regmap_config *regmap_cfg;
+	struct regmap *regmap;
+	struct ak4613_priv *priv;
+
+	regmap_cfg = NULL;
+	if (np) {
+		const struct of_device_id *of_id;
+
+		of_id = of_match_device(ak4613_of_match, dev);
+		if (of_id)
+			regmap_cfg = of_id->data;
+	} else {
+		regmap_cfg = (const struct regmap_config *)id->driver_data;
+	}
+
+	if (!regmap_cfg)
+		return -EINVAL;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	ak4613_parse_of(priv, dev);
+
+	priv->iface		= NULL;
+	priv->cnt		= 0;
+	priv->sysclk		= 0;
+	INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write);
+
+	mutex_init(&priv->lock);
+
+	i2c_set_clientdata(i2c, priv);
+
+	regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	return devm_snd_soc_register_component(dev, &soc_component_dev_ak4613,
+				      &ak4613_dai, 1);
+}
+
+static int ak4613_i2c_remove(struct i2c_client *client)
+{
+	return 0;
+}
+
+static struct i2c_driver ak4613_i2c_driver = {
+	.driver = {
+		.name = "ak4613-codec",
+		.of_match_table = ak4613_of_match,
+	},
+	.probe		= ak4613_i2c_probe,
+	.remove		= ak4613_i2c_remove,
+	.id_table	= ak4613_i2c_id,
+};
+
+module_i2c_driver(ak4613_i2c_driver);
+
+MODULE_DESCRIPTION("Soc AK4613 driver");
+MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
+MODULE_LICENSE("GPL v2");