ASoC: add RT286 CODEC driver

This patch adds Realtek ALC286 codec driver.

ALC286 is a dual mode codec, which can run as HD-A or I2S mode.
It is controlled by HD-A verb commands via I2C protocol.
The following is the I/O difference between ALC286 and general I2S codecs.
1. A HD-A verb command contains three parts, NID, VID, and PID.
   And an I2S command contains only two parts: address and data.
2. Not only the register address is written, but the read command also
   includes the entire write command.
3. rt286 uses different registers for read and write the same bits.

We map verb command to regmap structure. However, we read most registers from
cache to prevent the asymmetry read/write issue in rt286.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Gustaw Lewandowski <gustaw.lewandowski@intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 1208 insertions, 0 deletions

diff --git a/sound/soc/codecs/rt286.c b/sound/soc/codecs/rt286.c
new file mode 100644
index 0000000..acfba9c
--- /dev/null
+++ b/sound/soc/codecs/rt286.c
@@ -0,0 +1,1208 @@
+/*
+ * rt286.c  --  RT286 ALSA SoC audio codec driver
+ *
+ * Copyright 2013 Realtek Semiconductor Corp.
+ * Author: Bard Liao <bardliao@realtek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
+#include <linux/acpi.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+#include <sound/jack.h>
+#include <linux/workqueue.h>
+#include <sound/rt286.h>
+#include <sound/hda_verbs.h>
+
+#include "rt286.h"
+
+#define RT286_VENDOR_ID 0x10ec0286
+
+struct rt286_priv {
+	struct regmap *regmap;
+	struct snd_soc_codec *codec;
+	struct rt286_platform_data pdata;
+	struct i2c_client *i2c;
+	struct snd_soc_jack *jack;
+	struct delayed_work jack_detect_work;
+	int sys_clk;
+	struct reg_default *index_cache;
+};
+
+static struct reg_default rt286_index_def[] = {
+	{ 0x01, 0xaaaa },
+	{ 0x02, 0x8aaa },
+	{ 0x03, 0x0002 },
+	{ 0x04, 0xaf01 },
+	{ 0x08, 0x000d },
+	{ 0x09, 0xd810 },
+	{ 0x0a, 0x0060 },
+	{ 0x0b, 0x0000 },
+	{ 0x0f, 0x0000 },
+	{ 0x19, 0x0a17 },
+	{ 0x20, 0x0020 },
+	{ 0x33, 0x0208 },
+	{ 0x49, 0x0004 },
+	{ 0x4f, 0x50e9 },
+	{ 0x50, 0x2c00 },
+	{ 0x63, 0x2902 },
+};
+#define INDEX_CACHE_SIZE ARRAY_SIZE(rt286_index_def)
+
+static const struct reg_default rt286_reg[] = {
+	{ 0x00170500, 0x00000400 },
+	{ 0x00220000, 0x00000031 },
+	{ 0x00239000, 0x0000007f },
+	{ 0x0023a000, 0x0000007f },
+	{ 0x00270500, 0x00000400 },
+	{ 0x00370500, 0x00000400 },
+	{ 0x00870500, 0x00000400 },
+	{ 0x00920000, 0x00000031 },
+	{ 0x00935000, 0x000000c3 },
+	{ 0x00936000, 0x000000c3 },
+	{ 0x00970500, 0x00000400 },
+	{ 0x00b37000, 0x00000097 },
+	{ 0x00b37200, 0x00000097 },
+	{ 0x00b37300, 0x00000097 },
+	{ 0x00c37000, 0x00000000 },
+	{ 0x00c37100, 0x00000080 },
+	{ 0x01270500, 0x00000400 },
+	{ 0x01370500, 0x00000400 },
+	{ 0x01371f00, 0x411111f0 },
+	{ 0x01439000, 0x00000080 },
+	{ 0x0143a000, 0x00000080 },
+	{ 0x01470700, 0x00000000 },
+	{ 0x01470500, 0x00000400 },
+	{ 0x01470c00, 0x00000000 },
+	{ 0x01470100, 0x00000000 },
+	{ 0x01837000, 0x00000000 },
+	{ 0x01870500, 0x00000400 },
+	{ 0x02050000, 0x00000000 },
+	{ 0x02139000, 0x00000080 },
+	{ 0x0213a000, 0x00000080 },
+	{ 0x02170100, 0x00000000 },
+	{ 0x02170500, 0x00000400 },
+	{ 0x02170700, 0x00000000 },
+	{ 0x02270100, 0x00000000 },
+	{ 0x02370100, 0x00000000 },
+	{ 0x02040000, 0x00004002 },
+	{ 0x01870700, 0x00000020 },
+	{ 0x00830000, 0x000000c3 },
+	{ 0x00930000, 0x000000c3 },
+	{ 0x01270700, 0x00000000 },
+};
+
+static bool rt286_volatile_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case 0 ... 0xff:
+	case RT286_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID):
+	case RT286_GET_HP_SENSE:
+	case RT286_GET_MIC1_SENSE:
+	case RT286_PROC_COEF:
+		return true;
+	default:
+		return false;
+	}
+
+
+}
+
+static bool rt286_readable_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case 0 ... 0xff:
+	case RT286_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID):
+	case RT286_GET_HP_SENSE:
+	case RT286_GET_MIC1_SENSE:
+	case RT286_SET_AUDIO_POWER:
+	case RT286_SET_HPO_POWER:
+	case RT286_SET_SPK_POWER:
+	case RT286_SET_DMIC1_POWER:
+	case RT286_SPK_MUX:
+	case RT286_HPO_MUX:
+	case RT286_ADC0_MUX:
+	case RT286_ADC1_MUX:
+	case RT286_SET_MIC1:
+	case RT286_SET_PIN_HPO:
+	case RT286_SET_PIN_SPK:
+	case RT286_SET_PIN_DMIC1:
+	case RT286_SPK_EAPD:
+	case RT286_SET_AMP_GAIN_HPO:
+	case RT286_SET_DMIC2_DEFAULT:
+	case RT286_DACL_GAIN:
+	case RT286_DACR_GAIN:
+	case RT286_ADCL_GAIN:
+	case RT286_ADCR_GAIN:
+	case RT286_MIC_GAIN:
+	case RT286_SPOL_GAIN:
+	case RT286_SPOR_GAIN:
+	case RT286_HPOL_GAIN:
+	case RT286_HPOR_GAIN:
+	case RT286_F_DAC_SWITCH:
+	case RT286_F_RECMIX_SWITCH:
+	case RT286_REC_MIC_SWITCH:
+	case RT286_REC_I2S_SWITCH:
+	case RT286_REC_LINE_SWITCH:
+	case RT286_REC_BEEP_SWITCH:
+	case RT286_DAC_FORMAT:
+	case RT286_ADC_FORMAT:
+	case RT286_COEF_INDEX:
+	case RT286_PROC_COEF:
+	case RT286_SET_AMP_GAIN_ADC_IN1:
+	case RT286_SET_AMP_GAIN_ADC_IN2:
+	case RT286_SET_POWER(RT286_DAC_OUT1):
+	case RT286_SET_POWER(RT286_DAC_OUT2):
+	case RT286_SET_POWER(RT286_ADC_IN1):
+	case RT286_SET_POWER(RT286_ADC_IN2):
+	case RT286_SET_POWER(RT286_DMIC2):
+	case RT286_SET_POWER(RT286_MIC1):
+		return true;
+	default:
+		return false;
+	}
+}
+
+static int rt286_hw_write(void *context, unsigned int reg, unsigned int value)
+{
+	struct i2c_client *client = context;
+	struct rt286_priv *rt286 = i2c_get_clientdata(client);
+	u8 data[4];
+	int ret, i;
+
+	/*handle index registers*/
+	if (reg <= 0xff) {
+		rt286_hw_write(client, RT286_COEF_INDEX, reg);
+		reg = RT286_PROC_COEF;
+		for (i = 0; i < INDEX_CACHE_SIZE; i++) {
+			if (reg == rt286->index_cache[i].reg) {
+				rt286->index_cache[i].def = value;
+				break;
+			}
+
+		}
+	}
+
+	data[0] = (reg >> 24) & 0xff;
+	data[1] = (reg >> 16) & 0xff;
+	/*
+	 * 4 bit VID: reg should be 0
+	 * 12 bit VID: value should be 0
+	 * So we use an OR operator to handle it rather than use if condition.
+	 */
+	data[2] = ((reg >> 8) & 0xff) | ((value >> 8) & 0xff);
+	data[3] = value & 0xff;
+
+	ret = i2c_master_send(client, data, 4);
+
+	if (ret == 4)
+		return 0;
+	else
+		pr_err("ret=%d\n", ret);
+	if (ret < 0)
+		return ret;
+	else
+		return -EIO;
+}
+
+static int rt286_hw_read(void *context, unsigned int reg, unsigned int *value)
+{
+	struct i2c_client *client = context;
+	struct i2c_msg xfer[2];
+	int ret;
+	__be32 be_reg;
+	unsigned int index, vid, buf = 0x0;
+
+	/*handle index registers*/
+	if (reg <= 0xff) {
+		rt286_hw_write(client, RT286_COEF_INDEX, reg);
+		reg = RT286_PROC_COEF;
+	}
+
+	reg = reg | 0x80000;
+	vid = (reg >> 8) & 0xfff;
+
+	if (AC_VERB_GET_AMP_GAIN_MUTE == (vid & 0xf00)) {
+		index = (reg >> 8) & 0xf;
+		reg = (reg & ~0xf0f) | index;
+	}
+	be_reg = cpu_to_be32(reg);
+
+	/* Write register */
+	xfer[0].addr = client->addr;
+	xfer[0].flags = 0;
+	xfer[0].len = 4;
+	xfer[0].buf = (u8 *)&be_reg;
+
+	/* Read data */
+	xfer[1].addr = client->addr;
+	xfer[1].flags = I2C_M_RD;
+	xfer[1].len = 4;
+	xfer[1].buf = (u8 *)&buf;
+
+	ret = i2c_transfer(client->adapter, xfer, 2);
+	if (ret < 0)
+		return ret;
+	else if (ret != 2)
+		return -EIO;
+
+	*value = be32_to_cpu(buf);
+
+	return 0;
+}
+
+static void rt286_index_sync(struct snd_soc_codec *codec)
+{
+	struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
+	int i;
+
+	for (i = 0; i < INDEX_CACHE_SIZE; i++) {
+		snd_soc_write(codec, rt286->index_cache[i].reg,
+				  rt286->index_cache[i].def);
+	}
+}
+
+static int rt286_support_power_controls[] = {
+	RT286_DAC_OUT1,
+	RT286_DAC_OUT2,
+	RT286_ADC_IN1,
+	RT286_ADC_IN2,
+	RT286_MIC1,
+	RT286_DMIC1,
+	RT286_DMIC2,
+	RT286_SPK_OUT,
+	RT286_HP_OUT,
+};
+#define RT286_POWER_REG_LEN ARRAY_SIZE(rt286_support_power_controls)
+
+static int rt286_jack_detect(struct snd_soc_codec *codec, bool *hp, bool *mic)
+{
+	struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
+	unsigned int val, buf;
+	int i;
+
+	*hp = false;
+	*mic = false;
+
+	if (rt286->pdata.cbj_en) {
+		buf = snd_soc_read(codec, RT286_GET_HP_SENSE);
+		*hp = buf & 0x80000000;
+		if (*hp) {
+			/* power on HV,VERF */
+			snd_soc_update_bits(codec,
+				RT286_POWER_CTRL1, 0x1001, 0x0);
+			/* power LDO1 */
+			snd_soc_update_bits(codec,
+				RT286_POWER_CTRL2, 0x4, 0x4);
+			snd_soc_write(codec, RT286_SET_MIC1, 0x24);
+			val = snd_soc_read(codec, RT286_CBJ_CTRL2);
+
+			msleep(200);
+			i = 40;
+			while (((val & 0x0800) == 0) && (i > 0)) {
+				val =  snd_soc_read(codec,
+					RT286_CBJ_CTRL2);
+				i--;
+				msleep(20);
+			}
+
+			if (0x0400 == (val & 0x0700)) {
+				*mic = false;
+
+				snd_soc_write(codec,
+					RT286_SET_MIC1, 0x20);
+				/* power off HV,VERF */
+				snd_soc_update_bits(codec,
+					RT286_POWER_CTRL1, 0x1001, 0x1001);
+				snd_soc_update_bits(codec,
+					RT286_A_BIAS_CTRL3, 0xc000, 0x0000);
+				snd_soc_update_bits(codec,
+					RT286_CBJ_CTRL1, 0x0030, 0x0000);
+				snd_soc_update_bits(codec,
+					RT286_A_BIAS_CTRL2, 0xc000, 0x0000);
+			} else if ((0x0200 == (val & 0x0700)) ||
+				(0x0100 == (val & 0x0700))) {
+				*mic = true;
+				snd_soc_update_bits(codec,
+					RT286_A_BIAS_CTRL3, 0xc000, 0x8000);
+				snd_soc_update_bits(codec,
+					RT286_CBJ_CTRL1, 0x0030, 0x0020);
+				snd_soc_update_bits(codec,
+					RT286_A_BIAS_CTRL2, 0xc000, 0x8000);
+			} else {
+				*mic = false;
+			}
+
+			snd_soc_update_bits(codec,
+						RT286_MISC_CTRL1,
+						0x0060, 0x0000);
+		} else {
+			snd_soc_update_bits(codec,
+						RT286_MISC_CTRL1,
+						0x0060, 0x0020);
+			snd_soc_update_bits(codec,
+						RT286_A_BIAS_CTRL3,
+						0xc000, 0x8000);
+			snd_soc_update_bits(codec,
+						RT286_CBJ_CTRL1,
+						0x0030, 0x0020);
+			snd_soc_update_bits(codec,
+						RT286_A_BIAS_CTRL2,
+						0xc000, 0x8000);
+
+			*mic = false;
+		}
+	} else {
+		buf = snd_soc_read(codec, RT286_GET_HP_SENSE);
+		*hp = buf & 0x80000000;
+		buf = snd_soc_read(codec, RT286_GET_MIC1_SENSE);
+		*mic = buf & 0x80000000;
+	}
+
+	return 0;
+}
+
+static void rt286_jack_detect_work(struct work_struct *work)
+{
+	struct rt286_priv *rt286 =
+		container_of(work, struct rt286_priv, jack_detect_work.work);
+	int status = 0;
+	bool hp = false;
+	bool mic = false;
+
+	rt286_jack_detect(rt286->codec, &hp, &mic);
+
+	if (hp == true)
+		status |= SND_JACK_HEADPHONE;
+
+	if (mic == true)
+		status |= SND_JACK_MICROPHONE;
+
+	snd_soc_jack_report(rt286->jack, status,
+		SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
+}
+
+int rt286_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
+{
+	struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
+
+	rt286->jack = jack;
+
+	/* Send an initial empty report */
+	snd_soc_jack_report(rt286->jack, 0,
+		SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(rt286_mic_detect);
+
+static const DECLARE_TLV_DB_SCALE(out_vol_tlv, -6350, 50, 0);
+static const DECLARE_TLV_DB_SCALE(mic_vol_tlv, 0, 1000, 0);
+
+static const struct snd_kcontrol_new rt286_snd_controls[] = {
+	SOC_DOUBLE_R_TLV("DAC0 Playback Volume", RT286_DACL_GAIN,
+			    RT286_DACR_GAIN, 0, 0x7f, 0, out_vol_tlv),
+	SOC_DOUBLE_R_TLV("ADC0 Capture Volume", RT286_ADCL_GAIN,
+			    RT286_ADCR_GAIN, 0, 0x7f, 0, out_vol_tlv),
+	SOC_SINGLE_TLV("AMIC Volume", RT286_MIC_GAIN,
+			    0, 0x3, 0, mic_vol_tlv),
+	SOC_DOUBLE_R("Speaker Playback Switch", RT286_SPOL_GAIN,
+			    RT286_SPOR_GAIN, RT286_MUTE_SFT, 1, 1),
+};
+
+/* Digital Mixer */
+static const struct snd_kcontrol_new rt286_front_mix[] = {
+	SOC_DAPM_SINGLE("DAC Switch",  RT286_F_DAC_SWITCH,
+			RT286_MUTE_SFT, 1, 1),
+	SOC_DAPM_SINGLE("RECMIX Switch", RT286_F_RECMIX_SWITCH,
+			RT286_MUTE_SFT, 1, 1),
+};
+
+/* Analog Input Mixer */
+static const struct snd_kcontrol_new rt286_rec_mix[] = {
+	SOC_DAPM_SINGLE("Mic1 Switch", RT286_REC_MIC_SWITCH,
+			RT286_MUTE_SFT, 1, 1),
+	SOC_DAPM_SINGLE("I2S Switch", RT286_REC_I2S_SWITCH,
+			RT286_MUTE_SFT, 1, 1),
+	SOC_DAPM_SINGLE("Line1 Switch", RT286_REC_LINE_SWITCH,
+			RT286_MUTE_SFT, 1, 1),
+	SOC_DAPM_SINGLE("Beep Switch", RT286_REC_BEEP_SWITCH,
+			RT286_MUTE_SFT, 1, 1),
+};
+
+static const struct snd_kcontrol_new spo_enable_control =
+	SOC_DAPM_SINGLE("Switch", RT286_SET_PIN_SPK,
+			RT286_SET_PIN_SFT, 1, 0);
+
+static const struct snd_kcontrol_new hpol_enable_control =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch", RT286_HPOL_GAIN,
+			RT286_MUTE_SFT, 1, 1);
+
+static const struct snd_kcontrol_new hpor_enable_control =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch", RT286_HPOR_GAIN,
+			RT286_MUTE_SFT, 1, 1);
+
+/* ADC0 source */
+static const char * const rt286_adc_src[] = {
+	"Mic", "RECMIX", "Dmic"
+};
+
+static const int rt286_adc_values[] = {
+	0, 4, 5,
+};
+
+static SOC_VALUE_ENUM_SINGLE_DECL(
+	rt286_adc0_enum, RT286_ADC0_MUX, RT286_ADC_SEL_SFT,
+	RT286_ADC_SEL_MASK, rt286_adc_src, rt286_adc_values);
+
+static const struct snd_kcontrol_new rt286_adc0_mux =
+	SOC_DAPM_ENUM("ADC 0 source", rt286_adc0_enum);
+
+static SOC_VALUE_ENUM_SINGLE_DECL(
+	rt286_adc1_enum, RT286_ADC1_MUX, RT286_ADC_SEL_SFT,
+	RT286_ADC_SEL_MASK, rt286_adc_src, rt286_adc_values);
+
+static const struct snd_kcontrol_new rt286_adc1_mux =
+	SOC_DAPM_ENUM("ADC 1 source", rt286_adc1_enum);
+
+static const char * const rt286_dac_src[] = {
+	"Front", "Surround"
+};
+/* HP-OUT source */
+static SOC_ENUM_SINGLE_DECL(rt286_hpo_enum, RT286_HPO_MUX,
+				0, rt286_dac_src);
+
+static const struct snd_kcontrol_new rt286_hpo_mux =
+SOC_DAPM_ENUM("HPO source", rt286_hpo_enum);
+
+/* SPK-OUT source */
+static SOC_ENUM_SINGLE_DECL(rt286_spo_enum, RT286_SPK_MUX,
+				0, rt286_dac_src);
+
+static const struct snd_kcontrol_new rt286_spo_mux =
+SOC_DAPM_ENUM("SPO source", rt286_spo_enum);
+
+static int rt286_spk_event(struct snd_soc_dapm_widget *w,
+			    struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = w->codec;
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		snd_soc_write(codec,
+			RT286_SPK_EAPD, RT286_SET_EAPD_HIGH);
+		break;
+	case SND_SOC_DAPM_PRE_PMD:
+		snd_soc_write(codec,
+			RT286_SPK_EAPD, RT286_SET_EAPD_LOW);
+		break;
+
+	default:
+		return 0;
+	}
+
+	return 0;
+}
+
+static int rt286_set_dmic1_event(struct snd_soc_dapm_widget *w,
+				  struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = w->codec;
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		snd_soc_write(codec, RT286_SET_PIN_DMIC1, 0x20);
+		break;
+	case SND_SOC_DAPM_PRE_PMD:
+		snd_soc_write(codec, RT286_SET_PIN_DMIC1, 0);
+		break;
+	default:
+		return 0;
+	}
+
+	return 0;
+}
+
+static int rt286_adc_event(struct snd_soc_dapm_widget *w,
+			     struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = w->codec;
+	unsigned int nid;
+
+	nid = (w->reg >> 20) & 0xff;
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		snd_soc_update_bits(codec,
+			VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, nid, 0),
+			0x7080, 0x7000);
+		break;
+	case SND_SOC_DAPM_PRE_PMD:
+		snd_soc_update_bits(codec,
+			VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, nid, 0),
+			0x7080, 0x7080);
+		break;
+	default:
+		return 0;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_dapm_widget rt286_dapm_widgets[] = {
+	/* Input Lines */
+	SND_SOC_DAPM_INPUT("DMIC1 Pin"),
+	SND_SOC_DAPM_INPUT("DMIC2 Pin"),
+	SND_SOC_DAPM_INPUT("MIC1"),
+	SND_SOC_DAPM_INPUT("LINE1"),
+	SND_SOC_DAPM_INPUT("Beep"),
+
+	/* DMIC */
+	SND_SOC_DAPM_PGA_E("DMIC1", RT286_SET_POWER(RT286_DMIC1), 0, 1,
+		NULL, 0, rt286_set_dmic1_event,
+		SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
+	SND_SOC_DAPM_PGA("DMIC2", RT286_SET_POWER(RT286_DMIC2), 0, 1,
+		NULL, 0),
+	SND_SOC_DAPM_SUPPLY("DMIC Receiver", SND_SOC_NOPM,
+		0, 0, NULL, 0),
+
+	/* REC Mixer */
+	SND_SOC_DAPM_MIXER("RECMIX", SND_SOC_NOPM, 0, 0,
+		rt286_rec_mix, ARRAY_SIZE(rt286_rec_mix)),
+
+	/* ADCs */
+	SND_SOC_DAPM_ADC("ADC 0", NULL, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_ADC("ADC 1", NULL, SND_SOC_NOPM, 0, 0),
+
+	/* ADC Mux */
+	SND_SOC_DAPM_MUX_E("ADC 0 Mux", RT286_SET_POWER(RT286_ADC_IN1), 0, 1,
+		&rt286_adc0_mux, rt286_adc_event, SND_SOC_DAPM_PRE_PMD |
+		SND_SOC_DAPM_POST_PMU),
+	SND_SOC_DAPM_MUX_E("ADC 1 Mux", RT286_SET_POWER(RT286_ADC_IN2), 0, 1,
+		&rt286_adc1_mux, rt286_adc_event, SND_SOC_DAPM_PRE_PMD |
+		SND_SOC_DAPM_POST_PMU),
+
+	/* Audio Interface */
+	SND_SOC_DAPM_AIF_IN("AIF1RX", "AIF1 Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("AIF1TX", "AIF1 Capture", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_IN("AIF2RX", "AIF2 Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("AIF2TX", "AIF2 Capture", 0, SND_SOC_NOPM, 0, 0),
+
+	/* Output Side */
+	/* DACs */
+	SND_SOC_DAPM_DAC("DAC 0", NULL, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_DAC("DAC 1", NULL, SND_SOC_NOPM, 0, 0),
+
+	/* Output Mux */
+	SND_SOC_DAPM_MUX("SPK Mux", SND_SOC_NOPM, 0, 0, &rt286_spo_mux),
+	SND_SOC_DAPM_MUX("HPO Mux", SND_SOC_NOPM, 0, 0, &rt286_hpo_mux),
+
+	SND_SOC_DAPM_SUPPLY("HP Power", RT286_SET_PIN_HPO,
+		RT286_SET_PIN_SFT, 0, NULL, 0),
+
+	/* Output Mixer */
+	SND_SOC_DAPM_MIXER("Front", RT286_SET_POWER(RT286_DAC_OUT1), 0, 1,
+			rt286_front_mix, ARRAY_SIZE(rt286_front_mix)),
+	SND_SOC_DAPM_PGA("Surround", RT286_SET_POWER(RT286_DAC_OUT2), 0, 1,
+			NULL, 0),
+
+	/* Output Pga */
+	SND_SOC_DAPM_SWITCH_E("SPO", SND_SOC_NOPM, 0, 0,
+		&spo_enable_control, rt286_spk_event,
+		SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
+	SND_SOC_DAPM_SWITCH("HPO L", SND_SOC_NOPM, 0, 0,
+		&hpol_enable_control),
+	SND_SOC_DAPM_SWITCH("HPO R", SND_SOC_NOPM, 0, 0,
+		&hpor_enable_control),
+
+	/* Output Lines */
+	SND_SOC_DAPM_OUTPUT("SPOL"),
+	SND_SOC_DAPM_OUTPUT("SPOR"),
+	SND_SOC_DAPM_OUTPUT("HPO Pin"),
+	SND_SOC_DAPM_OUTPUT("SPDIF"),
+};
+
+static const struct snd_soc_dapm_route rt286_dapm_routes[] = {
+	{"DMIC1", NULL, "DMIC1 Pin"},
+	{"DMIC2", NULL, "DMIC2 Pin"},
+	{"DMIC1", NULL, "DMIC Receiver"},
+	{"DMIC2", NULL, "DMIC Receiver"},
+
+	{"RECMIX", "Beep Switch", "Beep"},
+	{"RECMIX", "Line1 Switch", "LINE1"},
+	{"RECMIX", "Mic1 Switch", "MIC1"},
+
+	{"ADC 0 Mux", "Dmic", "DMIC1"},
+	{"ADC 0 Mux", "RECMIX", "RECMIX"},
+	{"ADC 0 Mux", "Mic", "MIC1"},
+	{"ADC 1 Mux", "Dmic", "DMIC2"},
+	{"ADC 1 Mux", "RECMIX", "RECMIX"},
+	{"ADC 1 Mux", "Mic", "MIC1"},
+
+	{"ADC 0", NULL, "ADC 0 Mux"},
+	{"ADC 1", NULL, "ADC 1 Mux"},
+
+	{"AIF1TX", NULL, "ADC 0"},
+	{"AIF2TX", NULL, "ADC 1"},
+
+	{"DAC 0", NULL, "AIF1RX"},
+	{"DAC 1", NULL, "AIF2RX"},
+
+	{"Front", "DAC Switch", "DAC 0"},
+	{"Front", "RECMIX Switch", "RECMIX"},
+
+	{"Surround", NULL, "DAC 1"},
+
+	{"SPK Mux", "Front", "Front"},
+	{"SPK Mux", "Surround", "Surround"},
+
+	{"HPO Mux", "Front", "Front"},
+	{"HPO Mux", "Surround", "Surround"},
+
+	{"SPO", "Switch", "SPK Mux"},
+	{"HPO L", "Switch", "HPO Mux"},
+	{"HPO R", "Switch", "HPO Mux"},
+	{"HPO L", NULL, "HP Power"},
+	{"HPO R", NULL, "HP Power"},
+
+	{"SPOL", NULL, "SPO"},
+	{"SPOR", NULL, "SPO"},
+	{"HPO Pin", NULL, "HPO L"},
+	{"HPO Pin", NULL, "HPO R"},
+};
+
+static int rt286_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *params,
+			    struct snd_soc_dai *dai)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
+	unsigned int val = 0;
+	int d_len_code;
+
+	switch (params_rate(params)) {
+	/* bit 14 0:48K 1:44.1K */
+	case 44100:
+		val |= 0x4000;
+		break;
+	case 48000:
+		break;
+	default:
+		dev_err(codec->dev, "Unsupported sample rate %d\n",
+					params_rate(params));
+		return -EINVAL;
+	}
+	switch (rt286->sys_clk) {
+	case 12288000:
+	case 24576000:
+		if (params_rate(params) != 48000) {
+			dev_err(codec->dev, "Sys_clk is not matched (%d %d)\n",
+					params_rate(params), rt286->sys_clk);
+			return -EINVAL;
+		}
+		break;
+	case 11289600:
+	case 22579200:
+		if (params_rate(params) != 44100) {
+			dev_err(codec->dev, "Sys_clk is not matched (%d %d)\n",
+					params_rate(params), rt286->sys_clk);
+			return -EINVAL;
+		}
+		break;
+	}
+
+	if (params_channels(params) <= 16) {
+		/* bit 3:0 Number of Channel */
+		val |= (params_channels(params) - 1);
+	} else {
+		dev_err(codec->dev, "Unsupported channels %d\n",
+					params_channels(params));
+		return -EINVAL;
+	}
+
+	d_len_code = 0;
+	switch (params_width(params)) {
+	/* bit 6:4 Bits per Sample */
+	case 16:
+		d_len_code = 0;
+		val |= (0x1 << 4);
+		break;
+	case 32:
+		d_len_code = 2;
+		val |= (0x4 << 4);
+		break;
+	case 20:
+		d_len_code = 1;
+		val |= (0x2 << 4);
+		break;
+	case 24:
+		d_len_code = 2;
+		val |= (0x3 << 4);
+		break;
+	case 8:
+		d_len_code = 3;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	snd_soc_update_bits(codec,
+		RT286_I2S_CTRL1, 0x0018, d_len_code << 3);
+	dev_dbg(codec->dev, "format val = 0x%x\n", val);
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		snd_soc_update_bits(codec, RT286_DAC_FORMAT, 0x407f, val);
+	else
+		snd_soc_update_bits(codec, RT286_ADC_FORMAT, 0x407f, val);
+
+	return 0;
+}
+
+static int rt286_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	struct snd_soc_codec *codec = dai->codec;
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL1, 0x800, 0x800);
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL1, 0x800, 0x0);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL1, 0x300, 0x0);
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL1, 0x300, 0x1 << 8);
+		break;
+	case SND_SOC_DAIFMT_DSP_A:
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL1, 0x300, 0x2 << 8);
+		break;
+	case SND_SOC_DAIFMT_DSP_B:
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL1, 0x300, 0x3 << 8);
+		break;
+	default:
+		return -EINVAL;
+	}
+	/* bit 15 Stream Type 0:PCM 1:Non-PCM */
+	snd_soc_update_bits(codec, RT286_DAC_FORMAT, 0x8000, 0);
+	snd_soc_update_bits(codec, RT286_ADC_FORMAT, 0x8000, 0);
+
+	return 0;
+}
+
+static int rt286_set_dai_sysclk(struct snd_soc_dai *dai,
+				int clk_id, unsigned int freq, int dir)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
+
+	dev_dbg(codec->dev, "%s freq=%d\n", __func__, freq);
+
+	if (RT286_SCLK_S_MCLK == clk_id) {
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL2, 0x0100, 0x0);
+		snd_soc_update_bits(codec,
+			RT286_PLL_CTRL1, 0x20, 0x20);
+	} else {
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL2, 0x0100, 0x0100);
+		snd_soc_update_bits(codec,
+			RT286_PLL_CTRL, 0x4, 0x4);
+		snd_soc_update_bits(codec,
+			RT286_PLL_CTRL1, 0x20, 0x0);
+	}
+
+	switch (freq) {
+	case 19200000:
+		if (RT286_SCLK_S_MCLK == clk_id) {
+			dev_err(codec->dev, "Should not use MCLK\n");
+			return -EINVAL;
+		}
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL2, 0x40, 0x40);
+		break;
+	case 24000000:
+		if (RT286_SCLK_S_MCLK == clk_id) {
+			dev_err(codec->dev, "Should not use MCLK\n");
+			return -EINVAL;
+		}
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL2, 0x40, 0x0);
+		break;
+	case 12288000:
+	case 11289600:
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL2, 0x8, 0x0);
+		snd_soc_update_bits(codec,
+			RT286_CLK_DIV, 0xfc1e, 0x0004);
+		break;
+	case 24576000:
+	case 22579200:
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL2, 0x8, 0x8);
+		snd_soc_update_bits(codec,
+			RT286_CLK_DIV, 0xfc1e, 0x5406);
+		break;
+	default:
+		dev_err(codec->dev, "Unsupported system clock\n");
+		return -EINVAL;
+	}
+
+	rt286->sys_clk = freq;
+
+	return 0;
+}
+
+static int rt286_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
+{
+	struct snd_soc_codec *codec = dai->codec;
+
+	dev_dbg(codec->dev, "%s ratio=%d\n", __func__, ratio);
+	if (50 == ratio)
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL1, 0x1000, 0x1000);
+	else
+		snd_soc_update_bits(codec,
+			RT286_I2S_CTRL1, 0x1000, 0x0);
+
+
+	return 0;
+}
+
+static int rt286_set_bias_level(struct snd_soc_codec *codec,
+				 enum snd_soc_bias_level level)
+{
+	switch (level) {
+	case SND_SOC_BIAS_PREPARE:
+		if (SND_SOC_BIAS_STANDBY == codec->dapm.bias_level)
+			snd_soc_write(codec,
+				RT286_SET_AUDIO_POWER, AC_PWRST_D0);
+		break;
+
+	case SND_SOC_BIAS_STANDBY:
+		snd_soc_write(codec,
+			RT286_SET_AUDIO_POWER, AC_PWRST_D3);
+		break;
+
+	default:
+		break;
+	}
+	codec->dapm.bias_level = level;
+
+	return 0;
+}
+
+static irqreturn_t rt286_irq(int irq, void *data)
+{
+	struct rt286_priv *rt286 = data;
+	bool hp = false;
+	bool mic = false;
+	int status = 0;
+
+	rt286_jack_detect(rt286->codec, &hp, &mic);
+
+	/* Clear IRQ */
+	snd_soc_update_bits(rt286->codec,
+					RT286_IRQ_CTRL, 0x1, 0x1);
+
+	if (hp == true)
+		status |= SND_JACK_HEADPHONE;
+
+	if (mic == true)
+		status |= SND_JACK_MICROPHONE;
+
+	snd_soc_jack_report(rt286->jack, status,
+		SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
+
+	pm_wakeup_event(&rt286->i2c->dev, 300);
+
+	return IRQ_HANDLED;
+}
+
+static int rt286_probe(struct snd_soc_codec *codec)
+{
+	struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
+	int i, ret;
+
+	ret = snd_soc_read(codec,
+		RT286_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID));
+	if (ret != RT286_VENDOR_ID) {
+		dev_err(codec->dev,
+			"Device with ID register %x is not rt286\n", ret);
+		return -ENODEV;
+	}
+
+	snd_soc_write(codec, RT286_SET_AUDIO_POWER, AC_PWRST_D3);
+
+	for (i = 0; i < RT286_POWER_REG_LEN; i++)
+		snd_soc_write(codec,
+			RT286_SET_POWER(rt286_support_power_controls[i]),
+			AC_PWRST_D1);
+
+	if (!rt286->pdata.cbj_en) {
+		snd_soc_write(codec, RT286_CBJ_CTRL2, 0x0000);
+		snd_soc_write(codec, RT286_MIC1_DET_CTRL, 0x0816);
+		snd_soc_write(codec, RT286_MISC_CTRL1, 0x0000);
+		snd_soc_update_bits(codec,
+					RT286_CBJ_CTRL1, 0xf000, 0xb000);
+	} else {
+		snd_soc_update_bits(codec,
+					RT286_CBJ_CTRL1, 0xf000, 0x5000);
+	}
+
+	mdelay(10);
+
+	if (!rt286->pdata.gpio2_en)
+		snd_soc_write(codec, RT286_SET_DMIC2_DEFAULT, 0x4000);
+	else
+		snd_soc_write(codec, RT286_SET_DMIC2_DEFAULT, 0);
+
+	mdelay(10);
+
+	/*Power down LDO2*/
+	snd_soc_update_bits(codec, RT286_POWER_CTRL2, 0x8, 0x0);
+
+	codec->dapm.bias_level = SND_SOC_BIAS_OFF;
+	rt286->codec = codec;
+
+	rt286->i2c->irq = 0;
+	if (rt286->i2c->irq) {
+		snd_soc_update_bits(codec,
+					RT286_IRQ_CTRL, 0x2, 0x2);
+
+		INIT_DELAYED_WORK(&rt286->jack_detect_work,
+					rt286_jack_detect_work);
+		schedule_delayed_work(&rt286->jack_detect_work,
+					msecs_to_jiffies(1250));
+
+		ret = request_threaded_irq(rt286->i2c->irq, NULL, rt286_irq,
+			IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "rt286", rt286);
+		if (ret != 0) {
+			dev_err(codec->dev,
+				"Failed to reguest IRQ: %d\n", ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int rt286_remove(struct snd_soc_codec *codec)
+{
+	struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
+
+	cancel_delayed_work_sync(&rt286->jack_detect_work);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int rt286_suspend(struct snd_soc_codec *codec)
+{
+	struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
+
+	regcache_cache_only(rt286->regmap, true);
+	regcache_mark_dirty(rt286->regmap);
+
+	return 0;
+}
+
+static int rt286_resume(struct snd_soc_codec *codec)
+{
+	struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
+
+	regcache_cache_only(rt286->regmap, false);
+	rt286_index_sync(codec);
+	regcache_sync(rt286->regmap);
+
+	return 0;
+}
+#else
+#define rt286_suspend NULL
+#define rt286_resume NULL
+#endif
+
+#define RT286_STEREO_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
+#define RT286_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
+			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8)
+
+static const struct snd_soc_dai_ops rt286_aif_dai_ops = {
+	.hw_params = rt286_hw_params,
+	.set_fmt = rt286_set_dai_fmt,
+	.set_sysclk = rt286_set_dai_sysclk,
+	.set_bclk_ratio = rt286_set_bclk_ratio,
+};
+
+static struct snd_soc_dai_driver rt286_dai[] = {
+	{
+		.name = "rt286-aif1",
+		.id = RT286_AIF1,
+		.playback = {
+			.stream_name = "AIF1 Playback",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT286_STEREO_RATES,
+			.formats = RT286_FORMATS,
+		},
+		.capture = {
+			.stream_name = "AIF1 Capture",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT286_STEREO_RATES,
+			.formats = RT286_FORMATS,
+		},
+		.ops = &rt286_aif_dai_ops,
+		.symmetric_rates = 1,
+	},
+	{
+		.name = "rt286-aif2",
+		.id = RT286_AIF2,
+		.playback = {
+			.stream_name = "AIF2 Playback",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT286_STEREO_RATES,
+			.formats = RT286_FORMATS,
+		},
+		.capture = {
+			.stream_name = "AIF2 Capture",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT286_STEREO_RATES,
+			.formats = RT286_FORMATS,
+		},
+		.ops = &rt286_aif_dai_ops,
+		.symmetric_rates = 1,
+	},
+
+};
+
+static struct snd_soc_codec_driver soc_codec_dev_rt286 = {
+	.probe = rt286_probe,
+	.remove = rt286_remove,
+	.suspend = rt286_suspend,
+	.resume = rt286_resume,
+	.set_bias_level = rt286_set_bias_level,
+	.idle_bias_off = true,
+	.controls = rt286_snd_controls,
+	.num_controls = ARRAY_SIZE(rt286_snd_controls),
+	.dapm_widgets = rt286_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(rt286_dapm_widgets),
+	.dapm_routes = rt286_dapm_routes,
+	.num_dapm_routes = ARRAY_SIZE(rt286_dapm_routes),
+};
+
+static const struct regmap_config rt286_regmap = {
+	.reg_bits = 32,
+	.val_bits = 32,
+	.max_register = 0x02370100,
+	.volatile_reg = rt286_volatile_register,
+	.readable_reg = rt286_readable_register,
+	.reg_write = rt286_hw_write,
+	.reg_read = rt286_hw_read,
+	.cache_type = REGCACHE_RBTREE,
+	.reg_defaults = rt286_reg,
+	.num_reg_defaults = ARRAY_SIZE(rt286_reg),
+};
+
+static const struct i2c_device_id rt286_i2c_id[] = {
+	{"rt286", 0},
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, rt286_i2c_id);
+
+static const struct acpi_device_id rt286_acpi_match[] = {
+	{ "INT343A", 0 },
+	{},
+};
+MODULE_DEVICE_TABLE(acpi, rt286_acpi_match);
+
+static int rt286_i2c_probe(struct i2c_client *i2c,
+			   const struct i2c_device_id *id)
+{
+	struct rt286_platform_data *pdata = dev_get_platdata(&i2c->dev);
+	struct rt286_priv *rt286;
+	int ret;
+
+	rt286 = devm_kzalloc(&i2c->dev,	sizeof(*rt286),
+				GFP_KERNEL);
+	if (NULL == rt286)
+		return -ENOMEM;
+
+	rt286->regmap = devm_regmap_init(&i2c->dev, NULL, i2c, &rt286_regmap);
+	if (IS_ERR(rt286->regmap)) {
+		ret = PTR_ERR(rt286->regmap);
+		dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
+			ret);
+		return ret;
+	}
+
+	rt286->index_cache = rt286_index_def;
+	rt286->i2c = i2c;
+	i2c_set_clientdata(i2c, rt286);
+
+	if (pdata)
+		rt286->pdata = *pdata;
+
+	ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_rt286,
+				     rt286_dai, ARRAY_SIZE(rt286_dai));
+
+	return ret;
+}
+
+static int rt286_i2c_remove(struct i2c_client *i2c)
+{
+	struct rt286_priv *rt286 = i2c_get_clientdata(i2c);
+
+	if (i2c->irq)
+		free_irq(i2c->irq, rt286);
+	snd_soc_unregister_codec(&i2c->dev);
+
+	return 0;
+}
+
+
+struct i2c_driver rt286_i2c_driver = {
+	.driver = {
+		   .name = "rt286",
+		   .owner = THIS_MODULE,
+		   .acpi_match_table = ACPI_PTR(rt286_acpi_match),
+		   },
+	.probe = rt286_i2c_probe,
+	.remove = rt286_i2c_remove,
+	.id_table = rt286_i2c_id,
+};
+
+module_i2c_driver(rt286_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC RT286 driver");
+MODULE_AUTHOR("Bard Liao <bardliao@realtek.com>");
+MODULE_LICENSE("GPL");