ASoC: add rt298 codec driver

It is the initial version of ALC298 codec driver.

Signed-off-by: Bard Liao <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

include/sound/rt298.h

···
+/*
+ * linux/sound/rt286.h -- Platform data for RT286
+ *
+ * Copyright 2013 Realtek Microelectronics
+ *
+ * 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.
+ */
+
+#ifndef __LINUX_SND_RT298_H
+#define __LINUX_SND_RT298_H
+
+struct rt298_platform_data {
+	bool cbj_en; /*combo jack enable*/
+	bool gpio2_en; /*GPIO2 enable*/
+	bool suspend_power_off; /* power is off during suspend */
+};
+
+#endif

sound/soc/codecs/Kconfig

···
 	select SND_SOC_PCM512x_I2C if I2C
 	select SND_SOC_PCM512x_SPI if SPI_MASTER
 	select SND_SOC_RT286 if I2C
+	select SND_SOC_RT298 if I2C
 	select SND_SOC_RT5631 if I2C
 	select SND_SOC_RT5640 if I2C
 	select SND_SOC_RT5645 if I2C
···
 config SND_SOC_RL6347A
 	tristate
 	default y if SND_SOC_RT286=y
+	default y if SND_SOC_RT298=y
 	default m if SND_SOC_RT286=m
+	default m if SND_SOC_RT298=m
 
 config SND_SOC_RT286
+	tristate
+	depends on I2C
+
+config SND_SOC_RT298
 	tristate
 	depends on I2C
 

sound/soc/codecs/Makefile

···
 snd-soc-rl6231-objs := rl6231.o
 snd-soc-rl6347a-objs := rl6347a.o
 snd-soc-rt286-objs := rt286.o
+snd-soc-rt298-objs := rt298.o
 snd-soc-rt5631-objs := rt5631.o
 snd-soc-rt5640-objs := rt5640.o
 snd-soc-rt5645-objs := rt5645.o
···
 obj-$(CONFIG_SND_SOC_RL6231)	+= snd-soc-rl6231.o
 obj-$(CONFIG_SND_SOC_RL6347A)	+= snd-soc-rl6347a.o
 obj-$(CONFIG_SND_SOC_RT286)	+= snd-soc-rt286.o
+obj-$(CONFIG_SND_SOC_RT298)	+= snd-soc-rt298.o
 obj-$(CONFIG_SND_SOC_RT5631)	+= snd-soc-rt5631.o
 obj-$(CONFIG_SND_SOC_RT5640)	+= snd-soc-rt5640.o
 obj-$(CONFIG_SND_SOC_RT5645)	+= snd-soc-rt5645.o

sound/soc/codecs/rt298.c

···
+/*
+ * rt298.c  --  RT298 ALSA SoC audio codec driver
+ *
+ * Copyright 2015 Realtek Semiconductor Corp.
+ * Author: Bard Liao <[e-mail]>
+ *
+ * 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/rt298.h>
+#include <sound/hda_verbs.h>
+
+#include "rl6347a.h"
+#include "rt298.h"
+
+#define RT298_VENDOR_ID 0x10ec0298
+
+struct rt298_priv {
+	struct reg_default *index_cache;
+	int index_cache_size;
+	struct regmap *regmap;
+	struct snd_soc_codec *codec;
+	struct rt298_platform_data pdata;
+	struct i2c_client *i2c;
+	struct snd_soc_jack *jack;
+	struct delayed_work jack_detect_work;
+	int sys_clk;
+	int clk_id;
+	int is_hp_in;
+};
+
+static struct reg_default rt298_index_def[] = {
+	{ 0x01, 0xaaaa },
+	{ 0x02, 0x8aaa },
+	{ 0x03, 0x0002 },
+	{ 0x04, 0xaf01 },
+	{ 0x08, 0x000d },
+	{ 0x09, 0xd810 },
+	{ 0x0a, 0x0120 },
+	{ 0x0b, 0x0000 },
+	{ 0x0d, 0x2800 },
+	{ 0x0f, 0x0000 },
+	{ 0x19, 0x0a17 },
+	{ 0x20, 0x0020 },
+	{ 0x33, 0x0208 },
+	{ 0x46, 0x0300 },
+	{ 0x49, 0x0004 },
+	{ 0x4f, 0x50e9 },
+	{ 0x50, 0x2000 },
+	{ 0x63, 0x2902 },
+	{ 0x67, 0x1111 },
+	{ 0x68, 0x1016 },
+	{ 0x69, 0x273f },
+};
+#define INDEX_CACHE_SIZE ARRAY_SIZE(rt298_index_def)
+
+static const struct reg_default rt298_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 },
+	{ 0x01870700, 0x00000020 },
+	{ 0x00830000, 0x000000c3 },
+	{ 0x00930000, 0x000000c3 },
+	{ 0x01270700, 0x00000000 },
+};
+
+static bool rt298_volatile_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case 0 ... 0xff:
+	case RT298_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID):
+	case RT298_GET_HP_SENSE:
+	case RT298_GET_MIC1_SENSE:
+	case RT298_PROC_COEF:
+	case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_MIC1, 0):
+	case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_SPK_OUT, 0):
+	case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_HP_OUT, 0):
+		return true;
+	default:
+		return true;
+	}
+
+
+}
+
+static bool rt298_readable_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case 0 ... 0xff:
+	case RT298_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID):
+	case RT298_GET_HP_SENSE:
+	case RT298_GET_MIC1_SENSE:
+	case RT298_SET_AUDIO_POWER:
+	case RT298_SET_HPO_POWER:
+	case RT298_SET_SPK_POWER:
+	case RT298_SET_DMIC1_POWER:
+	case RT298_SPK_MUX:
+	case RT298_HPO_MUX:
+	case RT298_ADC0_MUX:
+	case RT298_ADC1_MUX:
+	case RT298_SET_MIC1:
+	case RT298_SET_PIN_HPO:
+	case RT298_SET_PIN_SPK:
+	case RT298_SET_PIN_DMIC1:
+	case RT298_SPK_EAPD:
+	case RT298_SET_AMP_GAIN_HPO:
+	case RT298_SET_DMIC2_DEFAULT:
+	case RT298_DACL_GAIN:
+	case RT298_DACR_GAIN:
+	case RT298_ADCL_GAIN:
+	case RT298_ADCR_GAIN:
+	case RT298_MIC_GAIN:
+	case RT298_SPOL_GAIN:
+	case RT298_SPOR_GAIN:
+	case RT298_HPOL_GAIN:
+	case RT298_HPOR_GAIN:
+	case RT298_F_DAC_SWITCH:
+	case RT298_F_RECMIX_SWITCH:
+	case RT298_REC_MIC_SWITCH:
+	case RT298_REC_I2S_SWITCH:
+	case RT298_REC_LINE_SWITCH:
+	case RT298_REC_BEEP_SWITCH:
+	case RT298_DAC_FORMAT:
+	case RT298_ADC_FORMAT:
+	case RT298_COEF_INDEX:
+	case RT298_PROC_COEF:
+	case RT298_SET_AMP_GAIN_ADC_IN1:
+	case RT298_SET_AMP_GAIN_ADC_IN2:
+	case RT298_SET_POWER(RT298_DAC_OUT1):
+	case RT298_SET_POWER(RT298_DAC_OUT2):
+	case RT298_SET_POWER(RT298_ADC_IN1):
+	case RT298_SET_POWER(RT298_ADC_IN2):
+	case RT298_SET_POWER(RT298_DMIC2):
+	case RT298_SET_POWER(RT298_MIC1):
+	case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_MIC1, 0):
+	case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_SPK_OUT, 0):
+	case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT298_HP_OUT, 0):
+		return true;
+	default:
+		return false;
+	}
+}
+
+#ifdef CONFIG_PM
+static void rt298_index_sync(struct snd_soc_codec *codec)
+{
+	struct rt298_priv *rt298 = snd_soc_codec_get_drvdata(codec);
+	int i;
+
+	for (i = 0; i < INDEX_CACHE_SIZE; i++) {
+		snd_soc_write(codec, rt298->index_cache[i].reg,
+				  rt298->index_cache[i].def);
+	}
+}
+#endif
+
+static int rt298_support_power_controls[] = {
+	RT298_DAC_OUT1,
+	RT298_DAC_OUT2,
+	RT298_ADC_IN1,
+	RT298_ADC_IN2,
+	RT298_MIC1,
+	RT298_DMIC1,
+	RT298_DMIC2,
+	RT298_SPK_OUT,
+	RT298_HP_OUT,
+};
+#define RT298_POWER_REG_LEN ARRAY_SIZE(rt298_support_power_controls)
+
+static int rt298_jack_detect(struct rt298_priv *rt298, bool *hp, bool *mic)
+{
+	struct snd_soc_dapm_context *dapm;
+	unsigned int val, buf;
+
+	*hp = false;
+	*mic = false;
+
+	if (!rt298->codec)
+		return -EINVAL;
+
+	dapm = snd_soc_codec_get_dapm(rt298->codec);
+
+	if (rt298->pdata.cbj_en) {
+		regmap_read(rt298->regmap, RT298_GET_HP_SENSE, &buf);
+		*hp = buf & 0x80000000;
+		if (*hp == rt298->is_hp_in)
+			return -1;
+		rt298->is_hp_in = *hp;
+		if (*hp) {
+			/* power on HV,VERF */
+			regmap_update_bits(rt298->regmap,
+				RT298_DC_GAIN, 0x200, 0x200);
+
+			snd_soc_dapm_force_enable_pin(dapm, "HV");
+			snd_soc_dapm_force_enable_pin(dapm, "VREF");
+			/* power LDO1 */
+			snd_soc_dapm_force_enable_pin(dapm, "LDO1");
+			snd_soc_dapm_sync(dapm);
+
+			regmap_write(rt298->regmap, RT298_SET_MIC1, 0x24);
+			msleep(50);
+
+			regmap_update_bits(rt298->regmap,
+				RT298_CBJ_CTRL1, 0xfcc0, 0xd400);
+			msleep(300);
+			regmap_read(rt298->regmap, RT298_CBJ_CTRL2, &val);
+
+			if (0x0070 == (val & 0x0070)) {
+				*mic = true;
+			} else {
+				regmap_update_bits(rt298->regmap,
+					RT298_CBJ_CTRL1, 0xfcc0, 0xe400);
+				msleep(300);
+				regmap_read(rt298->regmap,
+					RT298_CBJ_CTRL2, &val);
+				if (0x0070 == (val & 0x0070))
+					*mic = true;
+				else
+					*mic = false;
+			}
+			regmap_update_bits(rt298->regmap,
+				RT298_DC_GAIN, 0x200, 0x0);
+
+		} else {
+			*mic = false;
+			regmap_write(rt298->regmap, RT298_SET_MIC1, 0x20);
+		}
+	} else {
+		regmap_read(rt298->regmap, RT298_GET_HP_SENSE, &buf);
+		*hp = buf & 0x80000000;
+		regmap_read(rt298->regmap, RT298_GET_MIC1_SENSE, &buf);
+		*mic = buf & 0x80000000;
+	}
+
+	snd_soc_dapm_disable_pin(dapm, "HV");
+	snd_soc_dapm_disable_pin(dapm, "VREF");
+	if (!*hp)
+		snd_soc_dapm_disable_pin(dapm, "LDO1");
+	snd_soc_dapm_sync(dapm);
+
+	pr_debug("*hp = %d *mic = %d\n", *hp, *mic);
+
+	return 0;
+}
+
+static void rt298_jack_detect_work(struct work_struct *work)
+{
+	struct rt298_priv *rt298 =
+		container_of(work, struct rt298_priv, jack_detect_work.work);
+	int status = 0;
+	bool hp = false;
+	bool mic = false;
+
+	if (rt298_jack_detect(rt298, &hp, &mic) < 0)
+		return;
+
+	if (hp == true)
+		status |= SND_JACK_HEADPHONE;
+
+	if (mic == true)
+		status |= SND_JACK_MICROPHONE;
+
+	snd_soc_jack_report(rt298->jack, status,
+		SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
+}
+
+int rt298_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
+{
+	struct rt298_priv *rt298 = snd_soc_codec_get_drvdata(codec);
+
+	rt298->jack = jack;
+
+	/* Send an initial empty report */
+	snd_soc_jack_report(rt298->jack, 0,
+		SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(rt298_mic_detect);
+
+static int is_mclk_mode(struct snd_soc_dapm_widget *source,
+			 struct snd_soc_dapm_widget *sink)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(source->dapm);
+	struct rt298_priv *rt298 = snd_soc_codec_get_drvdata(codec);
+
+	if (rt298->clk_id == RT298_SCLK_S_MCLK)
+		return 1;
+	else
+		return 0;
+}
+
+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 rt298_snd_controls[] = {
+	SOC_DOUBLE_R_TLV("DAC0 Playback Volume", RT298_DACL_GAIN,
+			    RT298_DACR_GAIN, 0, 0x7f, 0, out_vol_tlv),
+	SOC_DOUBLE_R_TLV("ADC0 Capture Volume", RT298_ADCL_GAIN,
+			    RT298_ADCR_GAIN, 0, 0x7f, 0, out_vol_tlv),
+	SOC_SINGLE_TLV("AMIC Volume", RT298_MIC_GAIN,
+			    0, 0x3, 0, mic_vol_tlv),
+	SOC_DOUBLE_R("Speaker Playback Switch", RT298_SPOL_GAIN,
+			    RT298_SPOR_GAIN, RT298_MUTE_SFT, 1, 1),
+};
+
+/* Digital Mixer */
+static const struct snd_kcontrol_new rt298_front_mix[] = {
+	SOC_DAPM_SINGLE("DAC Switch",  RT298_F_DAC_SWITCH,
+			RT298_MUTE_SFT, 1, 1),
+	SOC_DAPM_SINGLE("RECMIX Switch", RT298_F_RECMIX_SWITCH,
+			RT298_MUTE_SFT, 1, 1),
+};
+
+/* Analog Input Mixer */
+static const struct snd_kcontrol_new rt298_rec_mix[] = {
+	SOC_DAPM_SINGLE("Mic1 Switch", RT298_REC_MIC_SWITCH,
+			RT298_MUTE_SFT, 1, 1),
+	SOC_DAPM_SINGLE("I2S Switch", RT298_REC_I2S_SWITCH,
+			RT298_MUTE_SFT, 1, 1),
+	SOC_DAPM_SINGLE("Line1 Switch", RT298_REC_LINE_SWITCH,
+			RT298_MUTE_SFT, 1, 1),
+	SOC_DAPM_SINGLE("Beep Switch", RT298_REC_BEEP_SWITCH,
+			RT298_MUTE_SFT, 1, 1),
+};
+
+static const struct snd_kcontrol_new spo_enable_control =
+	SOC_DAPM_SINGLE("Switch", RT298_SET_PIN_SPK,
+			RT298_SET_PIN_SFT, 1, 0);
+
+static const struct snd_kcontrol_new hpol_enable_control =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch", RT298_HPOL_GAIN,
+			RT298_MUTE_SFT, 1, 1);
+
+static const struct snd_kcontrol_new hpor_enable_control =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch", RT298_HPOR_GAIN,
+			RT298_MUTE_SFT, 1, 1);
+
+/* ADC0 source */
+static const char * const rt298_adc_src[] = {
+	"Mic", "RECMIX", "Dmic"
+};
+
+static const int rt298_adc_values[] = {
+	0, 4, 5,
+};
+
+static SOC_VALUE_ENUM_SINGLE_DECL(
+	rt298_adc0_enum, RT298_ADC0_MUX, RT298_ADC_SEL_SFT,
+	RT298_ADC_SEL_MASK, rt298_adc_src, rt298_adc_values);
+
+static const struct snd_kcontrol_new rt298_adc0_mux =
+	SOC_DAPM_ENUM("ADC 0 source", rt298_adc0_enum);
+
+static SOC_VALUE_ENUM_SINGLE_DECL(
+	rt298_adc1_enum, RT298_ADC1_MUX, RT298_ADC_SEL_SFT,
+	RT298_ADC_SEL_MASK, rt298_adc_src, rt298_adc_values);
+
+static const struct snd_kcontrol_new rt298_adc1_mux =
+	SOC_DAPM_ENUM("ADC 1 source", rt298_adc1_enum);
+
+static const char * const rt298_dac_src[] = {
+	"Front", "Surround"
+};
+/* HP-OUT source */
+static SOC_ENUM_SINGLE_DECL(rt298_hpo_enum, RT298_HPO_MUX,
+				0, rt298_dac_src);
+
+static const struct snd_kcontrol_new rt298_hpo_mux =
+SOC_DAPM_ENUM("HPO source", rt298_hpo_enum);
+
+/* SPK-OUT source */
+static SOC_ENUM_SINGLE_DECL(rt298_spo_enum, RT298_SPK_MUX,
+				0, rt298_dac_src);
+
+static const struct snd_kcontrol_new rt298_spo_mux =
+SOC_DAPM_ENUM("SPO source", rt298_spo_enum);
+
+static int rt298_spk_event(struct snd_soc_dapm_widget *w,
+			    struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		snd_soc_write(codec,
+			RT298_SPK_EAPD, RT298_SET_EAPD_HIGH);
+		break;
+	case SND_SOC_DAPM_PRE_PMD:
+		snd_soc_write(codec,
+			RT298_SPK_EAPD, RT298_SET_EAPD_LOW);
+		break;
+
+	default:
+		return 0;
+	}
+
+	return 0;
+}
+
+static int rt298_set_dmic1_event(struct snd_soc_dapm_widget *w,
+				  struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		snd_soc_write(codec, RT298_SET_PIN_DMIC1, 0x20);
+		break;
+	case SND_SOC_DAPM_PRE_PMD:
+		snd_soc_write(codec, RT298_SET_PIN_DMIC1, 0);
+		break;
+	default:
+		return 0;
+	}
+
+	return 0;
+}
+
+static int rt298_adc_event(struct snd_soc_dapm_widget *w,
+			     struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+	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 int rt298_mic1_event(struct snd_soc_dapm_widget *w,
+			     struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		snd_soc_update_bits(codec,
+			RT298_A_BIAS_CTRL3, 0xc000, 0x8000);
+		snd_soc_update_bits(codec,
+			RT298_A_BIAS_CTRL2, 0xc000, 0x8000);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		snd_soc_update_bits(codec,
+			RT298_A_BIAS_CTRL3, 0xc000, 0x0000);
+		snd_soc_update_bits(codec,
+			RT298_A_BIAS_CTRL2, 0xc000, 0x0000);
+		break;
+	default:
+		return 0;
+	}
+
+	return 0;
+}
+
+static int rt298_vref_event(struct snd_soc_dapm_widget *w,
+			     struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		snd_soc_update_bits(codec,
+			RT298_CBJ_CTRL1, 0x0400, 0x0000);
+		mdelay(50);
+		break;
+	default:
+		return 0;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_dapm_widget rt298_dapm_widgets[] = {
+
+	SND_SOC_DAPM_SUPPLY_S("HV", 1, RT298_POWER_CTRL1,
+		12, 1, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("VREF", RT298_POWER_CTRL1,
+		0, 1, rt298_vref_event, SND_SOC_DAPM_PRE_PMU),
+	SND_SOC_DAPM_SUPPLY_S("BG_MBIAS", 1, RT298_POWER_CTRL2,
+		1, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("LDO1", 1, RT298_POWER_CTRL2,
+		2, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("LDO2", 1, RT298_POWER_CTRL2,
+		3, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("VREF1", 1, RT298_POWER_CTRL2,
+		4, 1, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("LV", 2, RT298_POWER_CTRL1,
+		13, 1, NULL, 0),
+
+
+	SND_SOC_DAPM_SUPPLY("MCLK MODE", RT298_PLL_CTRL1,
+		5, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("MIC1 Input Buffer", SND_SOC_NOPM,
+		0, 0, rt298_mic1_event, SND_SOC_DAPM_PRE_PMU |
+		SND_SOC_DAPM_POST_PMD),
+
+	/* 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", RT298_SET_POWER(RT298_DMIC1), 0, 1,
+		NULL, 0, rt298_set_dmic1_event,
+		SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
+	SND_SOC_DAPM_PGA("DMIC2", RT298_SET_POWER(RT298_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,
+		rt298_rec_mix, ARRAY_SIZE(rt298_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", RT298_SET_POWER(RT298_ADC_IN1), 0, 1,
+		&rt298_adc0_mux, rt298_adc_event, SND_SOC_DAPM_PRE_PMD |
+		SND_SOC_DAPM_POST_PMU),
+	SND_SOC_DAPM_MUX_E("ADC 1 Mux", RT298_SET_POWER(RT298_ADC_IN2), 0, 1,
+		&rt298_adc1_mux, rt298_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, &rt298_spo_mux),
+	SND_SOC_DAPM_MUX("HPO Mux", SND_SOC_NOPM, 0, 0, &rt298_hpo_mux),
+
+	SND_SOC_DAPM_SUPPLY("HP Power", RT298_SET_PIN_HPO,
+		RT298_SET_PIN_SFT, 0, NULL, 0),
+
+	/* Output Mixer */
+	SND_SOC_DAPM_MIXER("Front", RT298_SET_POWER(RT298_DAC_OUT1), 0, 1,
+			rt298_front_mix, ARRAY_SIZE(rt298_front_mix)),
+	SND_SOC_DAPM_PGA("Surround", RT298_SET_POWER(RT298_DAC_OUT2), 0, 1,
+			NULL, 0),
+
+	/* Output Pga */
+	SND_SOC_DAPM_SWITCH_E("SPO", SND_SOC_NOPM, 0, 0,
+		&spo_enable_control, rt298_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 rt298_dapm_routes[] = {
+
+	{"ADC 0", NULL, "MCLK MODE", is_mclk_mode},
+	{"ADC 1", NULL, "MCLK MODE", is_mclk_mode},
+	{"Front", NULL, "MCLK MODE", is_mclk_mode},
+	{"Surround", NULL, "MCLK MODE", is_mclk_mode},
+
+	{"HP Power", NULL, "LDO1"},
+	{"HP Power", NULL, "LDO2"},
+	{"HP Power", NULL, "LV"},
+	{"HP Power", NULL, "VREF1"},
+	{"HP Power", NULL, "BG_MBIAS"},
+
+	{"MIC1", NULL, "LDO1"},
+	{"MIC1", NULL, "LDO2"},
+	{"MIC1", NULL, "HV"},
+	{"MIC1", NULL, "LV"},
+	{"MIC1", NULL, "VREF"},
+	{"MIC1", NULL, "VREF1"},
+	{"MIC1", NULL, "BG_MBIAS"},
+	{"MIC1", NULL, "MIC1 Input Buffer"},
+
+	{"SPO", NULL, "LDO1"},
+	{"SPO", NULL, "LDO2"},
+	{"SPO", NULL, "HV"},
+	{"SPO", NULL, "LV"},
+	{"SPO", NULL, "VREF"},
+	{"SPO", NULL, "VREF1"},
+	{"SPO", NULL, "BG_MBIAS"},
+
+	{"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 rt298_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 rt298_priv *rt298 = 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:
+	case 48000:
+		break;
+	default:
+		dev_err(codec->dev, "Unsupported sample rate %d\n",
+					params_rate(params));
+		return -EINVAL;
+	}
+	switch (rt298->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), rt298->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), rt298->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,
+		RT298_I2S_CTRL1, 0x0018, d_len_code << 3);
+	dev_dbg(codec->dev, "format val = 0x%x\n", val);
+
+	snd_soc_update_bits(codec, RT298_DAC_FORMAT, 0x407f, val);
+	snd_soc_update_bits(codec, RT298_ADC_FORMAT, 0x407f, val);
+
+	return 0;
+}
+
+static int rt298_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,
+			RT298_I2S_CTRL1, 0x800, 0x800);
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		snd_soc_update_bits(codec,
+			RT298_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,
+			RT298_I2S_CTRL1, 0x300, 0x0);
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		snd_soc_update_bits(codec,
+			RT298_I2S_CTRL1, 0x300, 0x1 << 8);
+		break;
+	case SND_SOC_DAIFMT_DSP_A:
+		snd_soc_update_bits(codec,
+			RT298_I2S_CTRL1, 0x300, 0x2 << 8);
+		break;
+	case SND_SOC_DAIFMT_DSP_B:
+		snd_soc_update_bits(codec,
+			RT298_I2S_CTRL1, 0x300, 0x3 << 8);
+		break;
+	default:
+		return -EINVAL;
+	}
+	/* bit 15 Stream Type 0:PCM 1:Non-PCM */
+	snd_soc_update_bits(codec, RT298_DAC_FORMAT, 0x8000, 0);
+	snd_soc_update_bits(codec, RT298_ADC_FORMAT, 0x8000, 0);
+
+	return 0;
+}
+
+static int rt298_set_dai_sysclk(struct snd_soc_dai *dai,
+				int clk_id, unsigned int freq, int dir)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct rt298_priv *rt298 = snd_soc_codec_get_drvdata(codec);
+
+	dev_dbg(codec->dev, "%s freq=%d\n", __func__, freq);
+
+	if (RT298_SCLK_S_MCLK == clk_id) {
+		snd_soc_update_bits(codec,
+			RT298_I2S_CTRL2, 0x0100, 0x0);
+		snd_soc_update_bits(codec,
+			RT298_PLL_CTRL1, 0x20, 0x20);
+	} else {
+		snd_soc_update_bits(codec,
+			RT298_I2S_CTRL2, 0x0100, 0x0100);
+		snd_soc_update_bits(codec,
+			RT298_PLL_CTRL, 0x4, 0x4);
+		snd_soc_update_bits(codec,
+			RT298_PLL_CTRL1, 0x20, 0x0);
+	}
+
+	switch (freq) {
+	case 19200000:
+		if (RT298_SCLK_S_MCLK == clk_id) {
+			dev_err(codec->dev, "Should not use MCLK\n");
+			return -EINVAL;
+		}
+		snd_soc_update_bits(codec,
+			RT298_I2S_CTRL2, 0x40, 0x40);
+		break;
+	case 24000000:
+		if (RT298_SCLK_S_MCLK == clk_id) {
+			dev_err(codec->dev, "Should not use MCLK\n");
+			return -EINVAL;
+		}
+		snd_soc_update_bits(codec,
+			RT298_I2S_CTRL2, 0x40, 0x0);
+		break;
+	case 12288000:
+	case 11289600:
+		snd_soc_update_bits(codec,
+			RT298_I2S_CTRL2, 0x8, 0x0);
+		snd_soc_update_bits(codec,
+			RT298_CLK_DIV, 0xfc1e, 0x0004);
+		break;
+	case 24576000:
+	case 22579200:
+		snd_soc_update_bits(codec,
+			RT298_I2S_CTRL2, 0x8, 0x8);
+		snd_soc_update_bits(codec,
+			RT298_CLK_DIV, 0xfc1e, 0x5406);
+		break;
+	default:
+		dev_err(codec->dev, "Unsupported system clock\n");
+		return -EINVAL;
+	}
+
+	rt298->sys_clk = freq;
+	rt298->clk_id = clk_id;
+
+	return 0;
+}
+
+static int rt298_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,
+			RT298_I2S_CTRL1, 0x1000, 0x1000);
+	else
+		snd_soc_update_bits(codec,
+			RT298_I2S_CTRL1, 0x1000, 0x0);
+
+
+	return 0;
+}
+
+static int rt298_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 ==
+			snd_soc_codec_get_bias_level(codec)) {
+			snd_soc_write(codec,
+				RT298_SET_AUDIO_POWER, AC_PWRST_D0);
+			snd_soc_update_bits(codec, 0x0d, 0x200, 0x200);
+			snd_soc_update_bits(codec, 0x52, 0x80, 0x0);
+			mdelay(20);
+			snd_soc_update_bits(codec, 0x0d, 0x200, 0x0);
+			snd_soc_update_bits(codec, 0x52, 0x80, 0x80);
+		}
+		break;
+
+	case SND_SOC_BIAS_ON:
+		mdelay(30);
+		snd_soc_update_bits(codec,
+			RT298_CBJ_CTRL1, 0x0400, 0x0400);
+
+		break;
+
+	case SND_SOC_BIAS_STANDBY:
+		snd_soc_write(codec,
+			RT298_SET_AUDIO_POWER, AC_PWRST_D3);
+		snd_soc_update_bits(codec,
+			RT298_CBJ_CTRL1, 0x0400, 0x0000);
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static irqreturn_t rt298_irq(int irq, void *data)
+{
+	struct rt298_priv *rt298 = data;
+	bool hp = false;
+	bool mic = false;
+	int ret, status = 0;
+
+	ret = rt298_jack_detect(rt298, &hp, &mic);
+
+	/* Clear IRQ */
+	regmap_update_bits(rt298->regmap, RT298_IRQ_CTRL, 0x1, 0x1);
+
+	if (ret == 0) {
+		if (hp == true)
+			status |= SND_JACK_HEADPHONE;
+
+		if (mic == true)
+			status |= SND_JACK_MICROPHONE;
+
+		snd_soc_jack_report(rt298->jack, status,
+			SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
+
+		pm_wakeup_event(&rt298->i2c->dev, 300);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int rt298_probe(struct snd_soc_codec *codec)
+{
+	struct rt298_priv *rt298 = snd_soc_codec_get_drvdata(codec);
+
+	rt298->codec = codec;
+
+	if (rt298->i2c->irq) {
+		regmap_update_bits(rt298->regmap,
+					RT298_IRQ_CTRL, 0x2, 0x2);
+
+		INIT_DELAYED_WORK(&rt298->jack_detect_work,
+					rt298_jack_detect_work);
+		schedule_delayed_work(&rt298->jack_detect_work,
+					msecs_to_jiffies(1250));
+	}
+
+	return 0;
+}
+
+static int rt298_remove(struct snd_soc_codec *codec)
+{
+	struct rt298_priv *rt298 = snd_soc_codec_get_drvdata(codec);
+
+	cancel_delayed_work_sync(&rt298->jack_detect_work);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int rt298_suspend(struct snd_soc_codec *codec)
+{
+	struct rt298_priv *rt298 = snd_soc_codec_get_drvdata(codec);
+
+	rt298->is_hp_in = -1;
+	regcache_cache_only(rt298->regmap, true);
+	regcache_mark_dirty(rt298->regmap);
+
+	return 0;
+}
+
+static int rt298_resume(struct snd_soc_codec *codec)
+{
+	struct rt298_priv *rt298 = snd_soc_codec_get_drvdata(codec);
+
+	regcache_cache_only(rt298->regmap, false);
+	rt298_index_sync(codec);
+	regcache_sync(rt298->regmap);
+
+	return 0;
+}
+#else
+#define rt298_suspend NULL
+#define rt298_resume NULL
+#endif
+
+#define RT298_STEREO_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
+#define RT298_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 rt298_aif_dai_ops = {
+	.hw_params = rt298_hw_params,
+	.set_fmt = rt298_set_dai_fmt,
+	.set_sysclk = rt298_set_dai_sysclk,
+	.set_bclk_ratio = rt298_set_bclk_ratio,
+};
+
+static struct snd_soc_dai_driver rt298_dai[] = {
+	{
+		.name = "rt298-aif1",
+		.id = RT298_AIF1,
+		.playback = {
+			.stream_name = "AIF1 Playback",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT298_STEREO_RATES,
+			.formats = RT298_FORMATS,
+		},
+		.capture = {
+			.stream_name = "AIF1 Capture",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT298_STEREO_RATES,
+			.formats = RT298_FORMATS,
+		},
+		.ops = &rt298_aif_dai_ops,
+		.symmetric_rates = 1,
+	},
+	{
+		.name = "rt298-aif2",
+		.id = RT298_AIF2,
+		.playback = {
+			.stream_name = "AIF2 Playback",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT298_STEREO_RATES,
+			.formats = RT298_FORMATS,
+		},
+		.capture = {
+			.stream_name = "AIF2 Capture",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT298_STEREO_RATES,
+			.formats = RT298_FORMATS,
+		},
+		.ops = &rt298_aif_dai_ops,
+		.symmetric_rates = 1,
+	},
+
+};
+
+static struct snd_soc_codec_driver soc_codec_dev_rt298 = {
+	.probe = rt298_probe,
+	.remove = rt298_remove,
+	.suspend = rt298_suspend,
+	.resume = rt298_resume,
+	.set_bias_level = rt298_set_bias_level,
+	.idle_bias_off = true,
+	.controls = rt298_snd_controls,
+	.num_controls = ARRAY_SIZE(rt298_snd_controls),
+	.dapm_widgets = rt298_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(rt298_dapm_widgets),
+	.dapm_routes = rt298_dapm_routes,
+	.num_dapm_routes = ARRAY_SIZE(rt298_dapm_routes),
+};
+
+static const struct regmap_config rt298_regmap = {
+	.reg_bits = 32,
+	.val_bits = 32,
+	.max_register = 0x02370100,
+	.volatile_reg = rt298_volatile_register,
+	.readable_reg = rt298_readable_register,
+	.reg_write = rl6347a_hw_write,
+	.reg_read = rl6347a_hw_read,
+	.cache_type = REGCACHE_RBTREE,
+	.reg_defaults = rt298_reg,
+	.num_reg_defaults = ARRAY_SIZE(rt298_reg),
+};
+
+static const struct i2c_device_id rt298_i2c_id[] = {
+	{"rt298", 0},
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, rt298_i2c_id);
+
+static const struct acpi_device_id rt298_acpi_match[] = {
+	{ "INT343A", 0 },
+	{},
+};
+MODULE_DEVICE_TABLE(acpi, rt298_acpi_match);
+
+static int rt298_i2c_probe(struct i2c_client *i2c,
+			   const struct i2c_device_id *id)
+{
+	struct rt298_platform_data *pdata = dev_get_platdata(&i2c->dev);
+	struct rt298_priv *rt298;
+	struct device *dev = &i2c->dev;
+	const struct acpi_device_id *acpiid;
+	int i, ret;
+
+	pr_info("%s\n", __func__);
+
+	rt298 = devm_kzalloc(&i2c->dev,	sizeof(*rt298),
+				GFP_KERNEL);
+	if (NULL == rt298)
+		return -ENOMEM;
+
+	rt298->regmap = devm_regmap_init(&i2c->dev, NULL, i2c, &rt298_regmap);
+	if (IS_ERR(rt298->regmap)) {
+		ret = PTR_ERR(rt298->regmap);
+		dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
+			ret);
+		return ret;
+	}
+
+	regmap_read(rt298->regmap,
+		RT298_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID), &ret);
+	if (ret != RT298_VENDOR_ID) {
+		dev_err(&i2c->dev,
+			"Device with ID register %#x is not rt298\n", ret);
+		return -ENODEV;
+	}
+
+	rt298->index_cache = rt298_index_def;
+	rt298->index_cache_size = INDEX_CACHE_SIZE;
+	rt298->i2c = i2c;
+	i2c_set_clientdata(i2c, rt298);
+
+	/* restore codec default */
+	for (i = 0; i < INDEX_CACHE_SIZE; i++)
+		regmap_write(rt298->regmap, rt298->index_cache[i].reg,
+				rt298->index_cache[i].def);
+	for (i = 0; i < ARRAY_SIZE(rt298_reg); i++)
+		regmap_write(rt298->regmap, rt298_reg[i].reg,
+				rt298_reg[i].def);
+
+	if (pdata)
+		rt298->pdata = *pdata;
+
+	/* enable jack combo mode on supported devices */
+	acpiid = acpi_match_device(dev->driver->acpi_match_table, dev);
+	if (acpiid) {
+		rt298->pdata = *(struct rt298_platform_data *)
+				acpiid->driver_data;
+	}
+
+	/* VREF Charging */
+	regmap_update_bits(rt298->regmap, 0x04, 0x80, 0x80);
+	regmap_update_bits(rt298->regmap, 0x1b, 0x860, 0x860);
+	/* Vref2 */
+	regmap_update_bits(rt298->regmap, 0x08, 0x20, 0x20);
+
+	regmap_write(rt298->regmap, RT298_SET_AUDIO_POWER, AC_PWRST_D3);
+
+	for (i = 0; i < RT298_POWER_REG_LEN; i++)
+		regmap_write(rt298->regmap,
+			RT298_SET_POWER(rt298_support_power_controls[i]),
+			AC_PWRST_D1);
+
+	if (!rt298->pdata.cbj_en) {
+		regmap_write(rt298->regmap, RT298_CBJ_CTRL2, 0x0000);
+		regmap_write(rt298->regmap, RT298_MIC1_DET_CTRL, 0x0816);
+		regmap_update_bits(rt298->regmap,
+					RT298_CBJ_CTRL1, 0xf000, 0xb000);
+	} else {
+		regmap_update_bits(rt298->regmap,
+					RT298_CBJ_CTRL1, 0xf000, 0x5000);
+	}
+
+	mdelay(10);
+
+	if (!rt298->pdata.gpio2_en)
+		regmap_write(rt298->regmap, RT298_SET_DMIC2_DEFAULT, 0x4000);
+	else
+		regmap_write(rt298->regmap, RT298_SET_DMIC2_DEFAULT, 0);
+
+	mdelay(10);
+
+	regmap_write(rt298->regmap, RT298_MISC_CTRL1, 0x0000);
+	regmap_update_bits(rt298->regmap,
+				RT298_WIND_FILTER_CTRL, 0x0082, 0x0082);
+	regmap_update_bits(rt298->regmap, RT298_IRQ_CTRL, 0x2, 0x2);
+	rt298->is_hp_in = -1;
+
+	if (rt298->i2c->irq) {
+		ret = request_threaded_irq(rt298->i2c->irq, NULL, rt298_irq,
+			IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "rt298", rt298);
+		if (ret != 0) {
+			dev_err(&i2c->dev,
+				"Failed to reguest IRQ: %d\n", ret);
+			return ret;
+		}
+	}
+
+	ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_rt298,
+				     rt298_dai, ARRAY_SIZE(rt298_dai));
+
+	return ret;
+}
+
+static int rt298_i2c_remove(struct i2c_client *i2c)
+{
+	struct rt298_priv *rt298 = i2c_get_clientdata(i2c);
+
+	if (i2c->irq)
+		free_irq(i2c->irq, rt298);
+	snd_soc_unregister_codec(&i2c->dev);
+
+	return 0;
+}
+
+
+static struct i2c_driver rt298_i2c_driver = {
+	.driver = {
+		   .name = "rt298",
+		   .owner = THIS_MODULE,
+		   .acpi_match_table = ACPI_PTR(rt298_acpi_match),
+		   },
+	.probe = rt298_i2c_probe,
+	.remove = rt298_i2c_remove,
+	.id_table = rt298_i2c_id,
+};
+
+module_i2c_driver(rt298_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC RT298 driver");
+MODULE_AUTHOR("Bard Liao <[e-mail]>");
+MODULE_LICENSE("GPL");

sound/soc/codecs/rt298.h

···
+/*
+ * rt298.h  --  RT298 ALSA SoC audio driver
+ *
+ * Copyright 2011 Realtek Microelectronics
+ * Author: Johnny Hsu <[e-mail]>
+ *
+ * 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.
+ */
+
+#ifndef __RT298_H__
+#define __RT298_H__
+
+#define VERB_CMD(V, N, D) ((N << 20) | (V << 8) | D)
+
+#define RT298_AUDIO_FUNCTION_GROUP			0x01
+#define RT298_DAC_OUT1					0x02
+#define RT298_DAC_OUT2					0x03
+#define RT298_DIG_CVT					0x06
+#define RT298_ADC_IN1					0x09
+#define RT298_ADC_IN2					0x08
+#define RT298_MIXER_IN					0x0b
+#define RT298_MIXER_OUT1				0x0c
+#define RT298_MIXER_OUT2				0x0d
+#define RT298_DMIC1					0x12
+#define RT298_DMIC2					0x13
+#define RT298_SPK_OUT					0x14
+#define RT298_MIC1					0x18
+#define RT298_LINE1					0x1a
+#define RT298_BEEP					0x1d
+#define RT298_SPDIF					0x1e
+#define RT298_VENDOR_REGISTERS				0x20
+#define RT298_HP_OUT					0x21
+#define RT298_MIXER_IN1					0x22
+#define RT298_MIXER_IN2					0x23
+
+#define RT298_SET_PIN_SFT				6
+#define RT298_SET_PIN_ENABLE				0x40
+#define RT298_SET_PIN_DISABLE				0
+#define RT298_SET_EAPD_HIGH				0x2
+#define RT298_SET_EAPD_LOW				0
+
+#define RT298_MUTE_SFT					7
+
+/* Verb commands */
+#define RT298_GET_PARAM(NID, PARAM) VERB_CMD(AC_VERB_PARAMETERS, NID, PARAM)
+#define RT298_SET_POWER(NID) VERB_CMD(AC_VERB_SET_POWER_STATE, NID, 0)
+#define RT298_SET_AUDIO_POWER RT298_SET_POWER(RT298_AUDIO_FUNCTION_GROUP)
+#define RT298_SET_HPO_POWER RT298_SET_POWER(RT298_HP_OUT)
+#define RT298_SET_SPK_POWER RT298_SET_POWER(RT298_SPK_OUT)
+#define RT298_SET_DMIC1_POWER RT298_SET_POWER(RT298_DMIC1)
+#define RT298_SPK_MUX\
+	VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT298_SPK_OUT, 0)
+#define RT298_HPO_MUX\
+	VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT298_HP_OUT, 0)
+#define RT298_ADC0_MUX\
+	VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT298_MIXER_IN1, 0)
+#define RT298_ADC1_MUX\
+	VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT298_MIXER_IN2, 0)
+#define RT298_SET_MIC1\
+	VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT298_MIC1, 0)
+#define RT298_SET_PIN_HPO\
+	VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT298_HP_OUT, 0)
+#define RT298_SET_PIN_SPK\
+	VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT298_SPK_OUT, 0)
+#define RT298_SET_PIN_DMIC1\
+	VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT298_DMIC1, 0)
+#define RT298_SET_PIN_SPDIF\
+	VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT298_SPDIF, 0)
+#define RT298_SET_PIN_DIG_CVT\
+	VERB_CMD(AC_VERB_SET_DIGI_CONVERT_1, RT298_DIG_CVT, 0)
+#define RT298_SPK_EAPD\
+	VERB_CMD(AC_VERB_SET_EAPD_BTLENABLE, RT298_SPK_OUT, 0)
+#define RT298_SET_AMP_GAIN_HPO\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_HP_OUT, 0)
+#define RT298_SET_AMP_GAIN_ADC_IN1\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_ADC_IN1, 0)
+#define RT298_SET_AMP_GAIN_ADC_IN2\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_ADC_IN2, 0)
+#define RT298_GET_HP_SENSE\
+	VERB_CMD(AC_VERB_GET_PIN_SENSE, RT298_HP_OUT, 0)
+#define RT298_GET_MIC1_SENSE\
+	VERB_CMD(AC_VERB_GET_PIN_SENSE, RT298_MIC1, 0)
+#define RT298_SET_DMIC2_DEFAULT\
+	VERB_CMD(AC_VERB_SET_CONFIG_DEFAULT_BYTES_3, RT298_DMIC2, 0)
+#define RT298_SET_SPDIF_DEFAULT\
+	VERB_CMD(AC_VERB_SET_CONFIG_DEFAULT_BYTES_3, RT298_SPDIF, 0)
+#define RT298_DACL_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_DAC_OUT1, 0xa000)
+#define RT298_DACR_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_DAC_OUT1, 0x9000)
+#define RT298_ADCL_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_ADC_IN1, 0x6000)
+#define RT298_ADCR_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_ADC_IN1, 0x5000)
+#define RT298_MIC_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIC1, 0x7000)
+#define RT298_SPOL_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_SPK_OUT, 0xa000)
+#define RT298_SPOR_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_SPK_OUT, 0x9000)
+#define RT298_HPOL_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_HP_OUT, 0xa000)
+#define RT298_HPOR_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_HP_OUT, 0x9000)
+#define RT298_F_DAC_SWITCH\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIXER_OUT1, 0x7000)
+#define RT298_F_RECMIX_SWITCH\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIXER_OUT1, 0x7100)
+#define RT298_REC_MIC_SWITCH\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIXER_IN, 0x7000)
+#define RT298_REC_I2S_SWITCH\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIXER_IN, 0x7100)
+#define RT298_REC_LINE_SWITCH\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIXER_IN, 0x7200)
+#define RT298_REC_BEEP_SWITCH\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT298_MIXER_IN, 0x7300)
+#define RT298_DAC_FORMAT\
+	VERB_CMD(AC_VERB_SET_STREAM_FORMAT, RT298_DAC_OUT1, 0)
+#define RT298_ADC_FORMAT\
+	VERB_CMD(AC_VERB_SET_STREAM_FORMAT, RT298_ADC_IN1, 0)
+#define RT298_COEF_INDEX\
+	VERB_CMD(AC_VERB_SET_COEF_INDEX, RT298_VENDOR_REGISTERS, 0)
+#define RT298_PROC_COEF\
+	VERB_CMD(AC_VERB_SET_PROC_COEF, RT298_VENDOR_REGISTERS, 0)
+
+/* Index registers */
+#define RT298_A_BIAS_CTRL1	0x01
+#define RT298_A_BIAS_CTRL2	0x02
+#define RT298_POWER_CTRL1	0x03
+#define RT298_A_BIAS_CTRL3	0x04
+#define RT298_POWER_CTRL2	0x08
+#define RT298_I2S_CTRL1		0x09
+#define RT298_I2S_CTRL2		0x0a
+#define RT298_CLK_DIV		0x0b
+#define RT298_DC_GAIN		0x0d
+#define RT298_POWER_CTRL3	0x0f
+#define RT298_MIC1_DET_CTRL	0x19
+#define RT298_MISC_CTRL1	0x20
+#define RT298_IRQ_CTRL		0x33
+#define RT298_WIND_FILTER_CTRL	0x46
+#define RT298_PLL_CTRL1		0x49
+#define RT298_CBJ_CTRL1		0x4f
+#define RT298_CBJ_CTRL2		0x50
+#define RT298_PLL_CTRL		0x63
+#define RT298_DEPOP_CTRL1	0x66
+#define RT298_DEPOP_CTRL2	0x67
+#define RT298_DEPOP_CTRL3	0x68
+#define RT298_DEPOP_CTRL4	0x69
+
+/* SPDIF (0x06) */
+#define RT298_SPDIF_SEL_SFT	0
+#define RT298_SPDIF_SEL_PCM0	0
+#define RT298_SPDIF_SEL_PCM1	1
+#define RT298_SPDIF_SEL_SPOUT	2
+#define RT298_SPDIF_SEL_PP	3
+
+/* RECMIX (0x0b) */
+#define RT298_M_REC_BEEP_SFT	0
+#define RT298_M_REC_LINE1_SFT	1
+#define RT298_M_REC_MIC1_SFT	2
+#define RT298_M_REC_I2S_SFT	3
+
+/* Front (0x0c) */
+#define RT298_M_FRONT_DAC_SFT	0
+#define RT298_M_FRONT_REC_SFT	1
+
+/* SPK-OUT (0x14) */
+#define RT298_M_SPK_MUX_SFT	14
+#define RT298_SPK_SEL_MASK	0x1
+#define RT298_SPK_SEL_SFT	0
+#define RT298_SPK_SEL_F		0
+#define RT298_SPK_SEL_S		1
+
+/* HP-OUT (0x21) */
+#define RT298_M_HP_MUX_SFT	14
+#define RT298_HP_SEL_MASK	0x1
+#define RT298_HP_SEL_SFT	0
+#define RT298_HP_SEL_F		0
+#define RT298_HP_SEL_S		1
+
+/* ADC (0x22) (0x23) */
+#define RT298_ADC_SEL_MASK	0x7
+#define RT298_ADC_SEL_SFT	0
+#define RT298_ADC_SEL_SURR	0
+#define RT298_ADC_SEL_FRONT	1
+#define RT298_ADC_SEL_DMIC	2
+#define RT298_ADC_SEL_BEEP	4
+#define RT298_ADC_SEL_LINE1	5
+#define RT298_ADC_SEL_I2S	6
+#define RT298_ADC_SEL_MIC1	7
+
+#define RT298_SCLK_S_MCLK	0
+#define RT298_SCLK_S_PLL	1
+
+enum {
+	RT298_AIF1,
+	RT298_AIF2,
+	RT298_AIFS,
+};
+
+int rt298_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack);
+
+#endif /* __RT298_H__ */
+