Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 927 insertions, 0 deletions

diff --git a/sound/soc/codecs/ak4613.c b/sound/soc/codecs/ak4613.c
new file mode 100644
index 0000000000..619a817ee9
--- /dev/null
+++ b/sound/soc/codecs/ak4613.c
@@ -0,0 +1,927 @@
+// 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
+
+/*
+ *		+-------+
+ *		|AK4613	|
+ *	SDTO1 <-|	|
+ *		|	|
+ *	SDTI1 ->|	|
+ *	SDTI2 ->|	|
+ *	SDTI3 ->|	|
+ *		+-------+
+ *
+ *	  +---+
+ * clk	  |   |___________________________________________...
+ *
+ * [TDM512]
+ * SDTO1  [L1][R1][L2][R2]
+ * SDTI1  [L1][R1][L2][R2][L3][R3][L4][R4][L5][R5][L6][R6]
+ *
+ * [TDM256]
+ * SDTO1  [L1][R1][L2][R2]
+ * SDTI1  [L1][R1][L2][R2][L3][R3][L4][R4]
+ * SDTI2  [L5][R5][L6][R6]
+ *
+ * [TDM128]
+ * SDTO1  [L1][R1][L2][R2]
+ * SDTI1  [L1][R1][L2][R2]
+ * SDTI2  [L3][R3][L4][R4]
+ * SDTI3  [L5][R5][L6][R6]
+ *
+ * [STEREO]
+ *	Playback  2ch : SDTI1
+ *	Capture   2ch : SDTO1
+ *
+ * [TDM512]
+ *	Playback 12ch : SDTI1
+ *	Capture   4ch : SDTO1
+ *
+ * [TDM256]
+ *	Playback 12ch : SDTI1 + SDTI2
+ *	Playback  8ch : SDTI1
+ *	Capture   4ch : SDTO1
+ *
+ * [TDM128]
+ *	Playback 12ch : SDTI1 + SDTI2 + SDTI3
+ *	Playback  8ch : SDTI1 + SDTI2
+ *	Playback  4ch : SDTI1
+ *	Capture   4ch : SDTO1
+ *
+ *
+ * !!! NOTE !!!
+ *
+ * Renesas is the only user of ak4613 on upstream so far,
+ * but the chip connection is like below.
+ * Thus, Renesas can't test all connection case.
+ * Tested TDM is very limited.
+ *
+ * +-----+	+-----------+
+ * | SoC |	|  AK4613   |
+ * |     |<-----|SDTO1	 IN1|<-- Mic
+ * |     |	|	 IN2|
+ * |     |	|	    |
+ * |     |----->|SDTI1	OUT1|--> Headphone
+ * +-----+	|SDTI2	OUT2|
+ *		|SDTI3	OUT3|
+ *		|	OUT4|
+ *		|	OUT5|
+ *		|	OUT6|
+ *		+-----------+
+ *
+ * Renesas SoC can handle [2,  6,8]    channels.
+ * Ak4613      can handle [2,4,  8,12] channels.
+ *
+ * Because of above HW connection and available channels number,
+ * Renesas could test are ...
+ *
+ *	[STEREO] Playback  2ch : SDTI1
+ *		 Capture   2ch : SDTO1
+ *	[TDM256] Playback  8ch : SDTI1 (*)
+ *
+ * (*) it used 8ch data between SoC <-> AK4613 on TDM256 mode,
+ *     but could confirm is only first 2ch because only 1
+ *     Headphone is connected.
+ *
+ * see
+ *	AK4613_ENABLE_TDM_TEST
+ */
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/of_device.h>
+#include <linux/of_graph.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)
+
+/*
+ * configs
+ *
+ * 0x000000BA
+ *
+ * B : AK4613_CONFIG_SDTI_x
+ * A : AK4613_CONFIG_MODE_x
+ */
+#define AK4613_CONFIG_SET(priv, x)	 priv->configs |= AK4613_CONFIG_##x
+#define AK4613_CONFIG_GET(priv, x)	(priv->configs &  AK4613_CONFIG_##x##_MASK)
+
+/*
+ * AK4613_CONFIG_SDTI_x
+ *
+ * It indicates how many SDTIx is connected.
+ */
+#define AK4613_CONFIG_SDTI_MASK		(0xF << 4)
+#define AK4613_CONFIG_SDTI(x)		(((x) & 0xF) << 4)
+#define AK4613_CONFIG_SDTI_set(priv, x)	  AK4613_CONFIG_SET(priv, SDTI(x))
+#define AK4613_CONFIG_SDTI_get(priv)	((AK4613_CONFIG_GET(priv, SDTI) >> 4) & 0xF)
+
+/*
+ * AK4613_CONFIG_MODE_x
+ *
+ * Same as Ctrl1 :: TDM1/TDM0
+ * No shift is requested
+ * see
+ *	AK4613_CTRL1_TO_MODE()
+ *	Table 11/12/13/14
+ */
+#define AK4613_CONFIG_MODE_MASK		(0xF)
+#define AK4613_CONFIG_MODE_STEREO	(0x0)
+#define AK4613_CONFIG_MODE_TDM512	(0x1)
+#define AK4613_CONFIG_MODE_TDM256	(0x2)
+#define AK4613_CONFIG_MODE_TDM128	(0x3)
+
+/*
+ * !!!! FIXME !!!!
+ *
+ * Because of testable HW limitation, TDM256 8ch TDM was only tested.
+ * This driver uses AK4613_ENABLE_TDM_TEST instead of new DT property so far.
+ * Don't hesitate to update driver, you don't need to care compatible
+ * with Renesas.
+ *
+ * #define AK4613_ENABLE_TDM_TEST
+ */
+
+struct ak4613_interface {
+	unsigned int width;
+	unsigned int fmt;
+	u8 dif;
+};
+
+struct ak4613_priv {
+	struct mutex lock;
+	struct snd_pcm_hw_constraint_list constraint_rates;
+	struct snd_pcm_hw_constraint_list constraint_channels;
+	struct work_struct dummy_write_work;
+	struct snd_soc_component *component;
+	unsigned int rate;
+	unsigned int sysclk;
+
+	unsigned int fmt;
+	unsigned int configs;
+	int cnt;
+	u8 ctrl1;
+	u8 oc;
+	u8 ic;
+};
+
+/*
+ * 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 },
+};
+
+/*
+ * CTRL1 register
+ * see
+ *	Table 11/12/13/14
+ */
+#define AUDIO_IFACE(_dif, _width, _fmt)		\
+	{					\
+		.dif	= _dif,			\
+		.width	= _width,		\
+		.fmt	= SND_SOC_DAIFMT_##_fmt,\
+	}
+static const struct ak4613_interface ak4613_iface[] = {
+	/* It doesn't support asymmetric format */
+
+	AUDIO_IFACE(0x03, 24, LEFT_J),
+	AUDIO_IFACE(0x04, 24, I2S),
+};
+#define AK4613_CTRL1_TO_MODE(priv)	((priv)->ctrl1 >> 6) /* AK4613_CONFIG_MODE_x */
+
+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->ctrl1 = 0;
+	mutex_unlock(&priv->lock);
+}
+
+static void ak4613_hw_constraints(struct ak4613_priv *priv,
+				  struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	static const unsigned int ak4613_rates[] = {
+		 32000,
+		 44100,
+		 48000,
+		 64000,
+		 88200,
+		 96000,
+		176400,
+		192000,
+	};
+#define AK4613_CHANNEL_2	 0
+#define AK4613_CHANNEL_4	 1
+#define AK4613_CHANNEL_8	 2
+#define AK4613_CHANNEL_12	 3
+#define AK4613_CHANNEL_NONE	-1
+	static const unsigned int ak4613_channels[] = {
+		[AK4613_CHANNEL_2]  =  2,
+		[AK4613_CHANNEL_4]  =  4,
+		[AK4613_CHANNEL_8]  =  8,
+		[AK4613_CHANNEL_12] = 12,
+	};
+#define MODE_MAX 4
+#define SDTx_MAX 4
+#define MASK(x) (1 << AK4613_CHANNEL_##x)
+	static const int mask_list[MODE_MAX][SDTx_MAX] = {
+		/* 				SDTO	 SDTIx1    SDTIx2		SDTIx3 */
+		[AK4613_CONFIG_MODE_STEREO] = { MASK(2), MASK(2),  MASK(2),		MASK(2)},
+		[AK4613_CONFIG_MODE_TDM512] = { MASK(4), MASK(12), MASK(12),		MASK(12)},
+		[AK4613_CONFIG_MODE_TDM256] = { MASK(4), MASK(8),  MASK(8)|MASK(12),	MASK(8)|MASK(12)},
+		[AK4613_CONFIG_MODE_TDM128] = { MASK(4), MASK(4),  MASK(4)|MASK(8),	MASK(4)|MASK(8)|MASK(12)},
+	};
+	struct snd_pcm_hw_constraint_list *constraint;
+	unsigned int mask;
+	unsigned int mode;
+	unsigned int fs;
+	int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+	int sdti_num;
+	int i;
+
+	constraint		= &priv->constraint_rates;
+	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);
+
+
+	sdti_num = AK4613_CONFIG_SDTI_get(priv);
+	if (WARN_ON(sdti_num >= SDTx_MAX))
+		return;
+
+	if (priv->cnt) {
+		/*
+		 * If it was already working,
+		 * the constraint is same as working mode.
+		 */
+		mode = AK4613_CTRL1_TO_MODE(priv);
+		mask = 0; /* no default */
+	} else {
+		/*
+		 * It is not yet working,
+		 * the constraint is based on board configs.
+		 * STEREO mask is default
+		 */
+		mode = AK4613_CONFIG_GET(priv, MODE);
+		mask = mask_list[AK4613_CONFIG_MODE_STEREO][is_play * sdti_num];
+	}
+
+	if (WARN_ON(mode >= MODE_MAX))
+		return;
+
+	/* add each mode mask */
+	mask |= mask_list[mode][is_play * sdti_num];
+
+	constraint		= &priv->constraint_channels;
+	constraint->list	= ak4613_channels;
+	constraint->mask	= mask;
+	constraint->count	= sizeof(ak4613_channels);
+	snd_pcm_hw_constraint_list(runtime, 0,
+				   SNDRV_PCM_HW_PARAM_CHANNELS, 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);
+
+	mutex_lock(&priv->lock);
+	ak4613_hw_constraints(priv, substream);
+	priv->cnt++;
+	mutex_unlock(&priv->lock);
+
+	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 format)
+{
+	struct snd_soc_component *component = dai->component;
+	struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
+	unsigned int fmt;
+
+	fmt = format & 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;
+	}
+
+	fmt = format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
+	switch (fmt) {
+	case SND_SOC_DAIFMT_CBC_CFC:
+		break;
+	default:
+		/*
+		 * SUPPORTME
+		 *
+		 * "clock provider" is not yet supperted
+		 */
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+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);
+	struct device *dev = component->dev;
+	unsigned int width = params_width(params);
+	unsigned int fmt = priv->fmt;
+	unsigned int rate;
+	int i, ret;
+	u8 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 have full TDM suppert yet
+	 */
+	ret = -EINVAL;
+
+	mutex_lock(&priv->lock);
+	if (priv->cnt > 1) {
+		/*
+		 * If it was already working, use current priv->ctrl1
+		 */
+		ret = 0;
+	} else {
+		/*
+		 * It is not yet working,
+		 */
+		unsigned int channel = params_channels(params);
+		u8 tdm;
+
+		/* STEREO or TDM */
+		if (channel == 2)
+			tdm = AK4613_CONFIG_MODE_STEREO;
+		else
+			tdm = AK4613_CONFIG_GET(priv, MODE);
+
+		for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
+			const struct ak4613_interface *iface = ak4613_iface + i;
+
+			if ((iface->fmt == fmt) && (iface->width == width)) {
+				/*
+				 * Ctrl1
+				 * | D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0  |
+				 * |TDM1|TDM0|DIF2|DIF1|DIF0|ATS1|ATS0|SMUTE|
+				 *  <  tdm  > < iface->dif >
+				 */
+				priv->ctrl1 = (tdm << 6) | (iface->dif << 3);
+				ret = 0;
+				break;
+			}
+		}
+	}
+	mutex_unlock(&priv->lock);
+
+	if (ret < 0)
+		goto hw_params_end;
+
+	snd_soc_component_update_bits(component, CTRL1, FMT_MASK, priv->ctrl1);
+	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;
+		fallthrough;
+	case SND_SOC_BIAS_PREPARE:
+		mgmt1 |= PMADC | PMDAC;
+		fallthrough;
+	case SND_SOC_BIAS_STANDBY:
+		mgmt1 |= PMVR;
+		fallthrough;
+	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);
+
+	mgmt1 = snd_soc_component_read(component, PW_MGMT1);
+	mgmt3 = snd_soc_component_read(component, PW_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;
+}
+
+/*
+ * Select below from Sound Card, not Auto
+ *	SND_SOC_DAIFMT_CBC_CFC
+ *	SND_SOC_DAIFMT_CBP_CFP
+ */
+static u64 ak4613_dai_formats =
+	SND_SOC_POSSIBLE_DAIFMT_I2S	|
+	SND_SOC_POSSIBLE_DAIFMT_LEFT_J;
+
+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,
+	.auto_selectable_formats	= &ak4613_dai_formats,
+	.num_auto_selectable_formats	= 1,
+};
+
+#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	= 12,
+		.rates		= AK4613_PCM_RATE,
+		.formats	= AK4613_PCM_FMTBIT,
+	},
+	.capture = {
+		.stream_name	= "Capture",
+		.channels_min	= 2,
+		.channels_max	= 4,
+		.rates		= AK4613_PCM_RATE,
+		.formats	= AK4613_PCM_FMTBIT,
+	},
+	.ops = &ak4613_dai_ops,
+	.symmetric_rate = 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,
+};
+
+static void ak4613_parse_of(struct ak4613_priv *priv,
+			    struct device *dev)
+{
+	struct device_node *np = dev->of_node;
+	char prop[32];
+	int sdti_num;
+	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;
+	}
+
+	/*
+	 * enable TDM256 test
+	 *
+	 * !!! FIXME !!!
+	 *
+	 * It should be configured by DT or other way
+	 * if it was full supported.
+	 * But it is using ifdef style for now for test
+	 * purpose.
+	 */
+#if defined(AK4613_ENABLE_TDM_TEST)
+	AK4613_CONFIG_SET(priv, MODE_TDM256);
+#endif
+
+	/*
+	 * connected STDI
+	 * TDM support is assuming it is probed via Audio-Graph-Card style here.
+	 * Default is SDTIx1 if it was probed via Simple-Audio-Card for now.
+	 */
+	sdti_num = of_graph_get_endpoint_count(np);
+	if ((sdti_num >= SDTx_MAX) || (sdti_num < 1))
+		sdti_num = 1;
+
+	AK4613_CONFIG_SDTI_set(priv, sdti_num);
+}
+
+static int ak4613_i2c_probe(struct i2c_client *i2c)
+{
+	struct device *dev = &i2c->dev;
+	const struct regmap_config *regmap_cfg;
+	struct regmap *regmap;
+	struct ak4613_priv *priv;
+
+	regmap_cfg = i2c_get_match_data(i2c);
+	if (!regmap_cfg)
+		return -EINVAL;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	ak4613_parse_of(priv, dev);
+
+	priv->ctrl1		= 0;
+	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 struct i2c_driver ak4613_i2c_driver = {
+	.driver = {
+		.name = "ak4613-codec",
+		.of_match_table = ak4613_of_match,
+	},
+	.probe		= ak4613_i2c_probe,
+	.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");