Merge branches 'topic/dmic' and 'topic/qcom' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-msm8916

Documentation/devicetree/bindings/sound/dmic.txt

@@ -0,0 +1,16 @@
+Device-Tree bindings for Digital microphone (DMIC) codec
+
+This device support generic PDM digital microphone.
+
+Required properties:
+	- compatible: should be "dmic-codec".
+
+Optional properties:
+	- dmicen-gpios: GPIO specifier for dmic to control start and stop
+
+Example node:
+
+	dmic_codec: dmic@0 {
+		compatible = "dmic-codec";
+		dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
+	};

Documentation/devicetree/bindings/sound/rt274.txt

@@ -0,0 +1,33 @@
+RT274 audio CODEC
+
+This device supports I2C only.
+
+Required properties:
+
+- compatible : "realtek,rt274".
+
+- reg : The I2C address of the device.
+
+Optional properties:
+
+- interrupts : The CODEC's interrupt output.
+
+
+Pins on the device (for linking into audio routes) for RT274:
+
+  * DMIC1 Pin
+  * DMIC2 Pin
+  * MIC
+  * LINE1
+  * LINE2
+  * HPO Pin
+  * SPDIF
+  * LINE3
+
+Example:
+
+codec: rt274@1c {
+	compatible = "realtek,rt274";
+	reg = <0x1c>;
+	interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
+};

sound/soc/codecs/88pm860x-codec.c

@@ -1355,7 +1355,7 @@ static struct regmap *pm860x_get_regmap(struct device *dev)
 	return pm860x->regmap;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_pm860x = {
+static const struct snd_soc_codec_driver soc_codec_dev_pm860x = {
 	.probe		= pm860x_probe,
 	.remove		= pm860x_remove,
 	.set_bias_level	= pm860x_set_bias_level,

sound/soc/codecs/Kconfig

@@ -71,7 +71,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_DA732X if I2C
 	select SND_SOC_DA9055 if I2C
 	select SND_SOC_DIO2125
-	select SND_SOC_DMIC
+	select SND_SOC_DMIC if GPIOLIB
 	select SND_SOC_ES8316 if I2C
 	select SND_SOC_ES8328_SPI if SPI_MASTER
 	select SND_SOC_ES8328_I2C if I2C
@@ -114,6 +114,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_PCM5102A
 	select SND_SOC_PCM512x_I2C if I2C
 	select SND_SOC_PCM512x_SPI if SPI_MASTER
+	select SND_SOC_RT274 if I2C
 	select SND_SOC_RT286 if I2C
 	select SND_SOC_RT298 if I2C
 	select SND_SOC_RT5514 if I2C
@@ -716,11 +717,17 @@ config SND_SOC_RL6231
 
 config SND_SOC_RL6347A
 	tristate
+	default y if SND_SOC_RT274=y
 	default y if SND_SOC_RT286=y
 	default y if SND_SOC_RT298=y
+	default m if SND_SOC_RT274=m
 	default m if SND_SOC_RT286=m
 	default m if SND_SOC_RT298=m
 
+config SND_SOC_RT274
+	tristate
+	depends on I2C
+
 config SND_SOC_RT286
 	tristate
 	depends on I2C

sound/soc/codecs/Makefile

@@ -113,6 +113,7 @@ snd-soc-pcm512x-i2c-objs := pcm512x-i2c.o
 snd-soc-pcm512x-spi-objs := pcm512x-spi.o
 snd-soc-rl6231-objs := rl6231.o
 snd-soc-rl6347a-objs := rl6347a.o
+snd-soc-rt274-objs := rt274.o
 snd-soc-rt286-objs := rt286.o
 snd-soc-rt298-objs := rt298.o
 snd-soc-rt5514-objs := rt5514.o
@@ -349,6 +350,7 @@ obj-$(CONFIG_SND_SOC_PCM512x_I2C)	+= snd-soc-pcm512x-i2c.o
 obj-$(CONFIG_SND_SOC_PCM512x_SPI)	+= snd-soc-pcm512x-spi.o
 obj-$(CONFIG_SND_SOC_RL6231)	+= snd-soc-rl6231.o
 obj-$(CONFIG_SND_SOC_RL6347A)	+= snd-soc-rl6347a.o
+obj-$(CONFIG_SND_SOC_RT274)	+= snd-soc-rt274.o
 obj-$(CONFIG_SND_SOC_RT286)	+= snd-soc-rt286.o
 obj-$(CONFIG_SND_SOC_RT298)	+= snd-soc-rt298.o
 obj-$(CONFIG_SND_SOC_RT5514)	+= snd-soc-rt5514.o

sound/soc/codecs/ab8500-codec.c

@@ -2523,7 +2523,7 @@ static int ab8500_codec_probe(struct snd_soc_codec *codec)
 	return status;
 }
 
-static struct snd_soc_codec_driver ab8500_codec_driver = {
+static const struct snd_soc_codec_driver ab8500_codec_driver = {
 	.probe =		ab8500_codec_probe,
 	.component_driver = {
 		.controls =		ab8500_ctrls,

sound/soc/codecs/ac97.c

@@ -112,7 +112,7 @@ static int ac97_soc_resume(struct snd_soc_codec *codec)
 #define ac97_soc_resume NULL
 #endif
 
-static struct snd_soc_codec_driver soc_codec_dev_ac97 = {
+static const struct snd_soc_codec_driver soc_codec_dev_ac97 = {
 	.probe = 	ac97_soc_probe,
 	.suspend =	ac97_soc_suspend,
 	.resume =	ac97_soc_resume,

sound/soc/codecs/ad1836.c

@@ -321,7 +321,7 @@ static int ad1836_remove(struct snd_soc_codec *codec)
 		AD1836_ADC_SERFMT_MASK, 0);
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
+static const struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
 	.probe = ad1836_probe,
 	.remove = ad1836_remove,
 	.suspend = ad1836_suspend,

sound/soc/codecs/ad193x.c

@@ -408,7 +408,7 @@ static int ad193x_codec_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
+static const struct snd_soc_codec_driver soc_codec_dev_ad193x = {
 	.probe = ad193x_codec_probe,
 	.component_driver = {
 		.controls		= ad193x_snd_controls,

sound/soc/codecs/ad1980.c

@@ -295,7 +295,7 @@ static int ad1980_soc_remove(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_ad1980 = {
+static const struct snd_soc_codec_driver soc_codec_dev_ad1980 = {
 	.probe = 	ad1980_soc_probe,
 	.remove = 	ad1980_soc_remove,
 

sound/soc/codecs/ad73311.c

@@ -54,7 +54,7 @@ static struct snd_soc_dai_driver ad73311_dai = {
 		.formats = SNDRV_PCM_FMTBIT_S16_LE, },
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_ad73311 = {
+static const struct snd_soc_codec_driver soc_codec_dev_ad73311 = {
 	.component_driver = {
 		.dapm_widgets		= ad73311_dapm_widgets,
 		.num_dapm_widgets	= ARRAY_SIZE(ad73311_dapm_widgets),

sound/soc/codecs/adau1373.c

@@ -1458,7 +1458,7 @@ static const struct regmap_config adau1373_regmap_config = {
 	.num_reg_defaults = ARRAY_SIZE(adau1373_reg_defaults),
 };
 
-static struct snd_soc_codec_driver adau1373_codec_driver = {
+static const struct snd_soc_codec_driver adau1373_codec_driver = {
 	.probe =	adau1373_probe,
 	.resume =	adau1373_resume,
 	.set_bias_level = adau1373_set_bias_level,

sound/soc/codecs/adau1701.c

@@ -757,7 +757,7 @@ static int adau1701_resume(struct snd_soc_codec *codec)
 #define adau1701_suspend 	NULL
 #endif /* CONFIG_PM */
 
-static struct snd_soc_codec_driver adau1701_codec_drv = {
+static const struct snd_soc_codec_driver adau1701_codec_drv = {
 	.probe			= adau1701_probe,
 	.remove			= adau1701_remove,
 	.resume			= adau1701_resume,

sound/soc/codecs/adau1977.c

@@ -867,7 +867,7 @@ static int adau1977_codec_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver adau1977_codec_driver = {
+static const struct snd_soc_codec_driver adau1977_codec_driver = {
 	.probe = adau1977_codec_probe,
 	.set_bias_level = adau1977_set_bias_level,
 	.set_sysclk = adau1977_set_sysclk,

sound/soc/codecs/adav80x.c

@@ -825,7 +825,7 @@ static int adav80x_resume(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver adav80x_codec_driver = {
+static const struct snd_soc_codec_driver adav80x_codec_driver = {
 	.probe = adav80x_probe,
 	.resume = adav80x_resume,
 	.set_bias_level = adav80x_set_bias_level,

sound/soc/codecs/ads117x.c

@@ -58,7 +58,7 @@ static struct snd_soc_dai_driver ads117x_dai = {
 		.formats = ADS117X_FORMATS,},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_ads117x = {
+static const struct snd_soc_codec_driver soc_codec_dev_ads117x = {
 	.component_driver = {
 		.dapm_widgets		= ads117x_dapm_widgets,
 		.num_dapm_widgets	= ARRAY_SIZE(ads117x_dapm_widgets),

sound/soc/codecs/ak4104.c

@@ -242,7 +242,7 @@ static int ak4104_soc_resume(struct snd_soc_codec *codec)
 #define ak4104_soc_resume	NULL
 #endif /* CONFIG_PM */
 
-static struct snd_soc_codec_driver soc_codec_device_ak4104 = {
+static const struct snd_soc_codec_driver soc_codec_device_ak4104 = {
 	.probe = ak4104_probe,
 	.remove = ak4104_remove,
 	.suspend = ak4104_soc_suspend,

sound/soc/codecs/ak4535.c

@@ -390,7 +390,7 @@ static const struct regmap_config ak4535_regmap = {
 	.num_reg_defaults = ARRAY_SIZE(ak4535_reg_defaults),
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_ak4535 = {
+static const struct snd_soc_codec_driver soc_codec_dev_ak4535 = {
 	.resume =	ak4535_resume,
 	.set_bias_level = ak4535_set_bias_level,
 	.suspend_bias_off = true,

sound/soc/codecs/ak4554.c

@@ -64,7 +64,7 @@ static struct snd_soc_dai_driver ak4554_dai = {
 	.symmetric_rates = 1,
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_ak4554 = {
+static const struct snd_soc_codec_driver soc_codec_dev_ak4554 = {
 	.component_driver = {
 		.dapm_widgets		= ak4554_dapm_widgets,
 		.num_dapm_widgets	= ARRAY_SIZE(ak4554_dapm_widgets),

sound/soc/codecs/ak4613.c

@@ -522,7 +522,7 @@ static int ak4613_resume(struct snd_soc_codec *codec)
 	return regcache_sync(regmap);
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_ak4613 = {
+static const struct snd_soc_codec_driver soc_codec_dev_ak4613 = {
 	.suspend		= ak4613_suspend,
 	.resume			= ak4613_resume,
 	.set_bias_level		= ak4613_set_bias_level,

sound/soc/codecs/ak4641.c

@@ -524,7 +524,7 @@ static struct snd_soc_dai_driver ak4641_dai[] = {
 },
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_ak4641 = {
+static const struct snd_soc_codec_driver soc_codec_dev_ak4641 = {
 	.component_driver = {
 		.controls		= ak4641_snd_controls,
 		.num_controls		= ARRAY_SIZE(ak4641_snd_controls),

sound/soc/codecs/ak4642.c

@@ -550,7 +550,7 @@ static int ak4642_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_ak4642 = {
+static const struct snd_soc_codec_driver soc_codec_dev_ak4642 = {
 	.probe			= ak4642_probe,
 	.suspend		= ak4642_suspend,
 	.resume			= ak4642_resume,

sound/soc/codecs/ak4671.c

@@ -610,7 +610,7 @@ static struct snd_soc_dai_driver ak4671_dai = {
 	.ops = &ak4671_dai_ops,
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_ak4671 = {
+static const struct snd_soc_codec_driver soc_codec_dev_ak4671 = {
 	.set_bias_level = ak4671_set_bias_level,
 	.component_driver = {
 		.controls		= ak4671_snd_controls,

sound/soc/codecs/ak5386.c

@@ -69,7 +69,7 @@ static int ak5386_soc_resume(struct snd_soc_codec *codec)
 #define ak5386_soc_resume	NULL
 #endif /* CONFIG_PM */
 
-static struct snd_soc_codec_driver soc_codec_ak5386 = {
+static const struct snd_soc_codec_driver soc_codec_ak5386 = {
 	.probe = ak5386_soc_probe,
 	.remove = ak5386_soc_remove,
 	.suspend = ak5386_soc_suspend,

sound/soc/codecs/alc5623.c

@@ -951,7 +951,7 @@ static int alc5623_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_device_alc5623 = {
+static const struct snd_soc_codec_driver soc_codec_device_alc5623 = {
 	.probe = alc5623_probe,
 	.suspend = alc5623_suspend,
 	.resume = alc5623_resume,

sound/soc/codecs/bt-sco.c

@@ -62,7 +62,7 @@ static struct snd_soc_dai_driver bt_sco_dai[] = {
 	}
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_bt_sco = {
+static const struct snd_soc_codec_driver soc_codec_dev_bt_sco = {
 	.component_driver = {
 		.dapm_widgets		= bt_sco_widgets,
 		.num_dapm_widgets	= ARRAY_SIZE(bt_sco_widgets),

sound/soc/codecs/cq93vc.c

@@ -128,7 +128,7 @@ static struct regmap *cq93vc_get_regmap(struct device *dev)
 	return davinci_vc->regmap;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
+static const struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
 	.set_bias_level = cq93vc_set_bias_level,
 	.get_regmap = cq93vc_get_regmap,
 	.component_driver = {

sound/soc/codecs/cs35l33.c

@@ -831,7 +831,7 @@ static int cs35l33_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_cs35l33 = {
+static const struct snd_soc_codec_driver soc_codec_dev_cs35l33 = {
 	.probe = cs35l33_probe,
 
 	.set_bias_level = cs35l33_set_bias_level,

sound/soc/codecs/cs35l34.c

@@ -779,7 +779,7 @@ static int cs35l34_probe(struct snd_soc_codec *codec)
 }
 
 
-static struct snd_soc_codec_driver soc_codec_dev_cs35l34 = {
+static const struct snd_soc_codec_driver soc_codec_dev_cs35l34 = {
 	.probe = cs35l34_probe,
 
 	.component_driver = {

sound/soc/codecs/cs35l35.c

@@ -1079,7 +1079,7 @@ static int cs35l35_codec_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_cs35l35 = {
+static const struct snd_soc_codec_driver soc_codec_dev_cs35l35 = {
 	.probe = cs35l35_codec_probe,
 	.set_sysclk = cs35l35_codec_set_sysclk,
 	.component_driver = {

sound/soc/codecs/cs4271.c

@@ -639,7 +639,7 @@ static int cs4271_codec_remove(struct snd_soc_codec *codec)
 	return 0;
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_cs4271 = {
+static const struct snd_soc_codec_driver soc_codec_dev_cs4271 = {
 	.probe			= cs4271_codec_probe,
 	.remove			= cs4271_codec_remove,
 	.suspend		= cs4271_soc_suspend,

sound/soc/codecs/cs42l51.c

@@ -504,7 +504,7 @@ static int cs42l51_codec_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_device_cs42l51 = {
+static const struct snd_soc_codec_driver soc_codec_device_cs42l51 = {
 	.probe = cs42l51_codec_probe,
 
 	.component_driver = {

sound/soc/codecs/cs4349.c

@@ -255,7 +255,7 @@ static struct snd_soc_dai_driver cs4349_dai = {
 	.symmetric_rates = 1,
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_cs4349 = {
+static const struct snd_soc_codec_driver soc_codec_dev_cs4349 = {
 	.component_driver = {
 		.controls		= cs4349_snd_controls,
 		.num_controls		= ARRAY_SIZE(cs4349_snd_controls),

sound/soc/codecs/cs47l24.c

@@ -1183,7 +1183,7 @@ static struct regmap *cs47l24_get_regmap(struct device *dev)
 	return priv->core.arizona->regmap;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_cs47l24 = {
+static const struct snd_soc_codec_driver soc_codec_dev_cs47l24 = {
 	.probe = cs47l24_codec_probe,
 	.remove = cs47l24_codec_remove,
 	.get_regmap = cs47l24_get_regmap,
@@ -1213,7 +1213,7 @@ static struct snd_compr_ops cs47l24_compr_ops = {
 	.copy = wm_adsp_compr_copy,
 };
 
-static struct snd_soc_platform_driver cs47l24_compr_platform = {
+static const struct snd_soc_platform_driver cs47l24_compr_platform = {
 	.compr_ops = &cs47l24_compr_ops,
 };
 

sound/soc/codecs/cs53l30.c

@@ -892,7 +892,7 @@ static int cs53l30_codec_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver cs53l30_driver = {
+static const struct snd_soc_codec_driver cs53l30_driver = {
 	.probe = cs53l30_codec_probe,
 	.set_bias_level = cs53l30_set_bias_level,
 	.idle_bias_off = true,

sound/soc/codecs/cx20442.c

@@ -398,7 +398,7 @@ static int cx20442_codec_remove(struct snd_soc_codec *codec)
 
 static const u8 cx20442_reg;
 
-static struct snd_soc_codec_driver cx20442_codec_dev = {
+static const struct snd_soc_codec_driver cx20442_codec_dev = {
 	.probe = 	cx20442_codec_probe,
 	.remove = 	cx20442_codec_remove,
 	.set_bias_level = cx20442_set_bias_level,

sound/soc/codecs/da7210.c

@@ -1164,7 +1164,7 @@ static int da7210_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_da7210 = {
+static const struct snd_soc_codec_driver soc_codec_dev_da7210 = {
 	.probe			= da7210_probe,
 
 	.component_driver = {

sound/soc/codecs/da7213.c

@@ -1787,7 +1787,7 @@ static int da7213_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_da7213 = {
+static const struct snd_soc_codec_driver soc_codec_dev_da7213 = {
 	.probe			= da7213_probe,
 	.set_bias_level		= da7213_set_bias_level,
 

sound/soc/codecs/da7218.c

@@ -3035,7 +3035,7 @@ static int da7218_resume(struct snd_soc_codec *codec)
 #define da7218_resume NULL
 #endif
 
-static struct snd_soc_codec_driver soc_codec_dev_da7218 = {
+static const struct snd_soc_codec_driver soc_codec_dev_da7218 = {
 	.probe			= da7218_probe,
 	.remove			= da7218_remove,
 	.suspend		= da7218_suspend,

sound/soc/codecs/da7219.c

@@ -1891,7 +1891,7 @@ static int da7219_resume(struct snd_soc_codec *codec)
 #define da7219_resume NULL
 #endif
 
-static struct snd_soc_codec_driver soc_codec_dev_da7219 = {
+static const struct snd_soc_codec_driver soc_codec_dev_da7219 = {
 	.probe			= da7219_probe,
 	.remove			= da7219_remove,
 	.suspend		= da7219_suspend,

sound/soc/codecs/da732x.c

@@ -1499,7 +1499,7 @@ static int da732x_set_bias_level(struct snd_soc_codec *codec,
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_da732x = {
+static const struct snd_soc_codec_driver soc_codec_dev_da732x = {
 	.set_bias_level		= da732x_set_bias_level,
 	.component_driver = {
 		.controls		= da732x_snd_controls,

sound/soc/codecs/da9055.c

@@ -1451,7 +1451,7 @@ static int da9055_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_da9055 = {
+static const struct snd_soc_codec_driver soc_codec_dev_da9055 = {
 	.probe			= da9055_probe,
 	.set_bias_level		= da9055_set_bias_level,
 

sound/soc/codecs/dmic.c

@@ -19,6 +19,8 @@
  *
  */
 
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/module.h>
@@ -27,6 +29,34 @@
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>
 
+static int dmic_daiops_trigger(struct snd_pcm_substream *substream,
+		int cmd, struct snd_soc_dai *dai)
+{
+	struct gpio_desc *dmic_en = snd_soc_dai_get_drvdata(dai);
+
+	if (!dmic_en)
+		return 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		gpiod_set_value(dmic_en, 1);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		gpiod_set_value(dmic_en, 0);
+		break;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_dai_ops dmic_dai_ops = {
+	.trigger	= dmic_daiops_trigger,
+};
+
 static struct snd_soc_dai_driver dmic_dai = {
 	.name = "dmic-hifi",
 	.capture = {
@@ -38,8 +68,23 @@ static struct snd_soc_dai_driver dmic_dai = {
 			| SNDRV_PCM_FMTBIT_S24_LE
 			| SNDRV_PCM_FMTBIT_S16_LE,
 	},
+	.ops    = &dmic_dai_ops,
 };
 
+static int dmic_codec_probe(struct snd_soc_codec *codec)
+{
+	struct gpio_desc *dmic_en;
+
+	dmic_en = devm_gpiod_get_optional(codec->dev,
+					"dmicen", GPIOD_OUT_LOW);
+	if (IS_ERR(dmic_en))
+		return PTR_ERR(dmic_en);
+
+	snd_soc_codec_set_drvdata(codec, dmic_en);
+
+	return 0;
+}
+
 static const struct snd_soc_dapm_widget dmic_dapm_widgets[] = {
 	SND_SOC_DAPM_AIF_OUT("DMIC AIF", "Capture", 0,
 			     SND_SOC_NOPM, 0, 0),
@@ -50,7 +95,8 @@ static const struct snd_soc_dapm_route intercon[] = {
 	{"DMIC AIF", NULL, "DMic"},
 };
 
-static struct snd_soc_codec_driver soc_dmic = {
+static const struct snd_soc_codec_driver soc_dmic = {
+	.probe = dmic_codec_probe,
 	.component_driver = {
 		.dapm_widgets		= dmic_dapm_widgets,
 		.num_dapm_widgets	= ARRAY_SIZE(dmic_dapm_widgets),
@@ -73,9 +119,15 @@ static int dmic_dev_remove(struct platform_device *pdev)
 
 MODULE_ALIAS("platform:dmic-codec");
 
+static const struct of_device_id dmic_dev_match[] = {
+	{.compatible = "dmic-codec"},
+	{}
+};
+
 static struct platform_driver dmic_driver = {
 	.driver = {
 		.name = "dmic-codec",
+		.of_match_table = dmic_dev_match,
 	},
 	.probe = dmic_dev_probe,
 	.remove = dmic_dev_remove,

sound/soc/codecs/es7134.c

@@ -69,7 +69,7 @@ static const struct snd_soc_dapm_route es7134_dapm_routes[] = {
 	{ "AOUTR", NULL, "DAC" },
 };
 
-static struct snd_soc_codec_driver es7134_codec_driver = {
+static const struct snd_soc_codec_driver es7134_codec_driver = {
 	.component_driver = {
 		.dapm_widgets		= es7134_dapm_widgets,
 		.num_dapm_widgets	= ARRAY_SIZE(es7134_dapm_widgets),

sound/soc/codecs/es8316.c

@@ -554,7 +554,7 @@ static int es8316_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_es8316 = {
+static const struct snd_soc_codec_driver soc_codec_dev_es8316 = {
 	.probe		= es8316_probe,
 	.idle_bias_off	= true,
 

sound/soc/codecs/es8328.c

@@ -830,7 +830,7 @@ const struct regmap_config es8328_regmap_config = {
 };
 EXPORT_SYMBOL_GPL(es8328_regmap_config);
 
-static struct snd_soc_codec_driver es8328_codec_driver = {
+static const struct snd_soc_codec_driver es8328_codec_driver = {
 	.probe		  = es8328_codec_probe,
 	.suspend	  = es8328_suspend,
 	.resume		  = es8328_resume,

sound/soc/codecs/hdac_hdmi.c

@@ -1360,7 +1360,7 @@ static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdac)
 
 }
 
-static struct snd_soc_dai_ops hdmi_dai_ops = {
+static const struct snd_soc_dai_ops hdmi_dai_ops = {
 	.startup = hdac_hdmi_pcm_open,
 	.shutdown = hdac_hdmi_pcm_close,
 	.hw_params = hdac_hdmi_set_hw_params,
@@ -1858,7 +1858,7 @@ static void hdmi_codec_complete(struct device *dev)
 #define hdmi_codec_complete NULL
 #endif
 
-static struct snd_soc_codec_driver hdmi_hda_codec = {
+static const struct snd_soc_codec_driver hdmi_hda_codec = {
 	.probe		= hdmi_codec_probe,
 	.remove		= hdmi_codec_remove,
 	.idle_bias_off	= true,

sound/soc/codecs/hdmi-codec.c

@@ -326,7 +326,7 @@ static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
 {
 	int i;
-	const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
+	static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
 		[0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
 		[4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
 	};
@@ -399,18 +399,6 @@ static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
 	return 0;
 }
 
-
-static const struct snd_kcontrol_new hdmi_controls[] = {
-	{
-		.access = SNDRV_CTL_ELEM_ACCESS_READ |
-			  SNDRV_CTL_ELEM_ACCESS_VOLATILE,
-		.iface = SNDRV_CTL_ELEM_IFACE_PCM,
-		.name = "ELD",
-		.info = hdmi_eld_ctl_info,
-		.get = hdmi_eld_ctl_get,
-	},
-};
-
 static int hdmi_codec_new_stream(struct snd_pcm_substream *substream,
 				 struct snd_soc_dai *dai)
 {
@@ -668,6 +656,16 @@ static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
 {
 	struct snd_soc_dai_driver *drv = dai->driver;
 	struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
+	struct snd_kcontrol *kctl;
+	struct snd_kcontrol_new hdmi_eld_ctl = {
+		.access	= SNDRV_CTL_ELEM_ACCESS_READ |
+			  SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+		.iface	= SNDRV_CTL_ELEM_IFACE_PCM,
+		.name	= "ELD",
+		.info	= hdmi_eld_ctl_info,
+		.get	= hdmi_eld_ctl_get,
+		.device	= rtd->pcm->device,
+	};
 	int ret;
 
 	dev_dbg(dai->dev, "%s()\n", __func__);
@@ -686,10 +684,15 @@ static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
 	hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
 	hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
 
-	return 0;
+	/* add ELD ctl with the device number corresponding to the PCM stream */
+	kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
+	if (!kctl)
+		return -ENOMEM;
+
+	return snd_ctl_add(rtd->card->snd_card, kctl);
 }
 
-static struct snd_soc_dai_driver hdmi_i2s_dai = {
+static const struct snd_soc_dai_driver hdmi_i2s_dai = {
 	.name = "i2s-hifi",
 	.id = DAI_ID_I2S,
 	.playback = {
@@ -730,10 +733,8 @@ static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
 	return ret;
 }
 
-static struct snd_soc_codec_driver hdmi_codec = {
+static const struct snd_soc_codec_driver hdmi_codec = {
 	.component_driver = {
-		.controls		= hdmi_controls,
-		.num_controls		= ARRAY_SIZE(hdmi_controls),
 		.dapm_widgets		= hdmi_widgets,
 		.num_dapm_widgets	= ARRAY_SIZE(hdmi_widgets),
 		.dapm_routes		= hdmi_routes,

sound/soc/codecs/ics43432.c

@@ -37,7 +37,7 @@ static struct snd_soc_dai_driver ics43432_dai = {
 	},
 };
 
-static struct snd_soc_codec_driver ics43432_codec_driver = {
+static const struct snd_soc_codec_driver ics43432_codec_driver = {
 };
 
 static int ics43432_probe(struct platform_device *pdev)

sound/soc/codecs/inno_rk3036.c

@@ -376,7 +376,7 @@ static int rk3036_codec_set_bias_level(struct snd_soc_codec *codec,
 	return 0;
 }
 
-static struct snd_soc_codec_driver rk3036_codec_driver = {
+static const struct snd_soc_codec_driver rk3036_codec_driver = {
 	.probe			= rk3036_codec_probe,
 	.remove			= rk3036_codec_remove,
 	.set_bias_level		= rk3036_codec_set_bias_level,

sound/soc/codecs/isabelle.c

@@ -1087,7 +1087,7 @@ static struct snd_soc_dai_driver isabelle_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_isabelle = {
+static const struct snd_soc_codec_driver soc_codec_dev_isabelle = {
 	.set_bias_level = isabelle_set_bias_level,
 	.component_driver = {
 		.controls		= isabelle_snd_controls,

sound/soc/codecs/jz4740.c

@@ -293,7 +293,7 @@ static int jz4740_codec_dev_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_jz4740_codec = {
+static const struct snd_soc_codec_driver soc_codec_dev_jz4740_codec = {
 	.probe = jz4740_codec_dev_probe,
 	.set_bias_level = jz4740_codec_set_bias_level,
 	.suspend_bias_off = true,

sound/soc/codecs/lm4857.c

@@ -100,7 +100,7 @@ static const struct snd_soc_dapm_route lm4857_routes[] = {
 	{ "EP", "Earpiece", "Mode" },
 };
 
-static struct snd_soc_component_driver lm4857_component_driver = {
+static const struct snd_soc_component_driver lm4857_component_driver = {
 	.controls = lm4857_controls,
 	.num_controls = ARRAY_SIZE(lm4857_controls),
 	.dapm_widgets = lm4857_dapm_widgets,

sound/soc/codecs/lm49453.c

@@ -1389,7 +1389,7 @@ static struct snd_soc_dai_driver lm49453_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_lm49453 = {
+static const struct snd_soc_codec_driver soc_codec_dev_lm49453 = {
 	.set_bias_level = lm49453_set_bias_level,
 	.component_driver = {
 		.controls		= lm49453_snd_controls,

sound/soc/codecs/max9768.c

@@ -151,7 +151,7 @@ static int max9768_probe(struct snd_soc_component *component)
 	return 0;
 }
 
-static struct snd_soc_component_driver max9768_component_driver = {
+static const struct snd_soc_component_driver max9768_component_driver = {
 	.probe = max9768_probe,
 	.controls = max9768_volume,
 	.num_controls = ARRAY_SIZE(max9768_volume),

sound/soc/codecs/max98088.c

@@ -1698,7 +1698,7 @@ static int max98088_remove(struct snd_soc_codec *codec)
        return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_max98088 = {
+static const struct snd_soc_codec_driver soc_codec_dev_max98088 = {
 	.probe   = max98088_probe,
 	.remove  = max98088_remove,
 	.set_bias_level = max98088_set_bias_level,

sound/soc/codecs/max98090.c

@@ -2499,7 +2499,7 @@ static void max98090_seq_notifier(struct snd_soc_dapm_context *dapm,
 	}
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_max98090 = {
+static const struct snd_soc_codec_driver soc_codec_dev_max98090 = {
 	.probe   = max98090_probe,
 	.remove  = max98090_remove,
 	.seq_notifier = max98090_seq_notifier,

sound/soc/codecs/max98095.c

@@ -2102,7 +2102,7 @@ static int max98095_remove(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_max98095 = {
+static const struct snd_soc_codec_driver soc_codec_dev_max98095 = {
 	.probe   = max98095_probe,
 	.remove  = max98095_remove,
 	.suspend = max98095_suspend,

sound/soc/codecs/max98357a.c

@@ -72,7 +72,7 @@ static int max98357a_codec_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver max98357a_codec_driver = {
+static const struct snd_soc_codec_driver max98357a_codec_driver = {
 	.probe			= max98357a_codec_probe,
 	.component_driver = {
 		.dapm_widgets		= max98357a_dapm_widgets,

sound/soc/codecs/max9850.c

@@ -301,7 +301,7 @@ static int max9850_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_max9850 = {
+static const struct snd_soc_codec_driver soc_codec_dev_max9850 = {
 	.probe =	max9850_probe,
 	.set_bias_level = max9850_set_bias_level,
 	.suspend_bias_off = true,

sound/soc/codecs/max9860.c

@@ -534,7 +534,7 @@ static int max9860_set_bias_level(struct snd_soc_codec *codec,
 	return 0;
 }
 
-static struct snd_soc_codec_driver max9860_codec_driver = {
+static const struct snd_soc_codec_driver max9860_codec_driver = {
 	.set_bias_level = max9860_set_bias_level,
 	.idle_bias_off = true,
 

sound/soc/codecs/max9867.c

@@ -413,7 +413,7 @@ static int max9867_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver max9867_codec = {
+static const struct snd_soc_codec_driver max9867_codec = {
 	.probe = max9867_probe,
 	.component_driver = {
 		.controls		= max9867_snd_controls,

sound/soc/codecs/max98926.c

@@ -496,7 +496,7 @@ static int max98926_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_max98926 = {
+static const struct snd_soc_codec_driver soc_codec_dev_max98926 = {
 	.probe	= max98926_probe,
 	.component_driver = {
 		.controls		= max98926_snd_controls,

sound/soc/codecs/mc13783.c

@@ -733,7 +733,7 @@ static struct regmap *mc13783_get_regmap(struct device *dev)
 	return dev_get_regmap(dev->parent, NULL);
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_mc13783 = {
+static const struct snd_soc_codec_driver soc_codec_dev_mc13783 = {
 	.probe		= mc13783_probe,
 	.remove		= mc13783_remove,
 	.get_regmap	= mc13783_get_regmap,

sound/soc/codecs/ml26124.c

@@ -537,7 +537,7 @@ static int ml26124_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_ml26124 = {
+static const struct snd_soc_codec_driver soc_codec_dev_ml26124 = {
 	.probe =	ml26124_probe,
 	.set_bias_level = ml26124_set_bias_level,
 	.suspend_bias_off = true,

sound/soc/codecs/msm8916-wcd-analog.c

@@ -767,7 +767,7 @@ static struct snd_soc_dai_driver pm8916_wcd_analog_dai[] = {
 	       },
 };
 
-static struct snd_soc_codec_driver pm8916_wcd_analog = {
+static const struct snd_soc_codec_driver pm8916_wcd_analog = {
 	.probe = pm8916_wcd_analog_probe,
 	.remove = pm8916_wcd_analog_remove,
 	.get_regmap = pm8916_get_regmap,

sound/soc/codecs/msm8916-wcd-digital.c

@@ -851,7 +851,7 @@ static struct snd_soc_dai_driver msm8916_wcd_digital_dai[] = {
 	       },
 };
 
-static struct snd_soc_codec_driver msm8916_wcd_digital = {
+static const struct snd_soc_codec_driver msm8916_wcd_digital = {
 	.probe = msm8916_wcd_digital_codec_probe,
 	.set_sysclk = msm8916_wcd_digital_codec_set_sysclk,
 	.component_driver = {

sound/soc/codecs/nau8540.c

@@ -735,7 +735,7 @@ static int __maybe_unused nau8540_resume(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver nau8540_codec_driver = {
+static const struct snd_soc_codec_driver nau8540_codec_driver = {
 	.set_sysclk = nau8540_set_sysclk,
 	.set_pll = nau8540_set_pll,
 	.suspend = nau8540_suspend,

sound/soc/codecs/nau8810.c

@@ -808,7 +808,7 @@ static const struct regmap_config nau8810_regmap_config = {
 	.num_reg_defaults = ARRAY_SIZE(nau8810_reg_defaults),
 };
 
-static struct snd_soc_codec_driver nau8810_codec_driver = {
+static const struct snd_soc_codec_driver nau8810_codec_driver = {
 	.set_bias_level = nau8810_set_bias_level,
 	.suspend_bias_off = true,
 

sound/soc/codecs/nau8824.c

@@ -1469,7 +1469,7 @@ static int __maybe_unused nau8824_resume(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver nau8824_codec_driver = {
+static const struct snd_soc_codec_driver nau8824_codec_driver = {
 	.probe = nau8824_codec_probe,
 	.set_sysclk = nau8824_set_sysclk,
 	.set_pll = nau8824_set_pll,

sound/soc/codecs/nau8825.c

@@ -2388,7 +2388,7 @@ static int __maybe_unused nau8825_resume(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver nau8825_codec_driver = {
+static const struct snd_soc_codec_driver nau8825_codec_driver = {
 	.probe = nau8825_codec_probe,
 	.remove = nau8825_codec_remove,
 	.set_sysclk = nau8825_set_sysclk,

sound/soc/codecs/pcm1681.c

@@ -288,7 +288,7 @@ static const struct regmap_config pcm1681_regmap = {
 	.readable_reg		= pcm1681_accessible_reg,
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_pcm1681 = {
+static const struct snd_soc_codec_driver soc_codec_dev_pcm1681 = {
 	.component_driver = {
 		.controls		= pcm1681_controls,
 		.num_controls		= ARRAY_SIZE(pcm1681_controls),

sound/soc/codecs/pcm179x.c

@@ -205,7 +205,7 @@ const struct regmap_config pcm179x_regmap_config = {
 };
 EXPORT_SYMBOL_GPL(pcm179x_regmap_config);
 
-static struct snd_soc_codec_driver soc_codec_dev_pcm179x = {
+static const struct snd_soc_codec_driver soc_codec_dev_pcm179x = {
 	.component_driver = {
 		.controls		= pcm179x_controls,
 		.num_controls		= ARRAY_SIZE(pcm179x_controls),

sound/soc/codecs/pcm3008.c

@@ -98,7 +98,7 @@ static struct snd_soc_dai_driver pcm3008_dai = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_pcm3008 = {
+static const struct snd_soc_codec_driver soc_codec_dev_pcm3008 = {
 	.component_driver = {
 		.dapm_widgets		= pcm3008_dapm_widgets,
 		.num_dapm_widgets	= ARRAY_SIZE(pcm3008_dapm_widgets),

sound/soc/codecs/pcm512x.c

@@ -1344,7 +1344,7 @@ static struct snd_soc_dai_driver pcm512x_dai = {
 	.ops = &pcm512x_dai_ops,
 };
 
-static struct snd_soc_codec_driver pcm512x_codec_driver = {
+static const struct snd_soc_codec_driver pcm512x_codec_driver = {
 	.set_bias_level = pcm512x_set_bias_level,
 	.idle_bias_off = true,
 

sound/soc/codecs/rt274.c

@@ -0,0 +1,1228 @@
+/*
+ * rt274.c  --  RT274 ALSA SoC audio codec driver
+ *
+ * Copyright 2017 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/dmi.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 "rl6347a.h"
+#include "rt274.h"
+
+#define RT274_VENDOR_ID 0x10ec0274
+
+struct rt274_priv {
+	struct reg_default *index_cache;
+	int index_cache_size;
+	struct regmap *regmap;
+	struct snd_soc_codec *codec;
+	struct i2c_client *i2c;
+	struct snd_soc_jack *jack;
+	struct delayed_work jack_detect_work;
+	int sys_clk;
+	int clk_id;
+	int fs;
+	bool master;
+};
+
+static const struct reg_default rt274_index_def[] = {
+	{ 0x00, 0x1004 },
+	{ 0x01, 0xaaaa },
+	{ 0x02, 0x88aa },
+	{ 0x03, 0x0002 },
+	{ 0x04, 0xaa09 },
+	{ 0x05, 0x0700 },
+	{ 0x06, 0x6110 },
+	{ 0x07, 0x0200 },
+	{ 0x08, 0xa807 },
+	{ 0x09, 0x0021 },
+	{ 0x0a, 0x7770 },
+	{ 0x0b, 0x7770 },
+	{ 0x0c, 0x002b },
+	{ 0x0d, 0x2420 },
+	{ 0x0e, 0x65c0 },
+	{ 0x0f, 0x7770 },
+	{ 0x10, 0x0420 },
+	{ 0x11, 0x7418 },
+	{ 0x12, 0x6bd0 },
+	{ 0x13, 0x645f },
+	{ 0x14, 0x0400 },
+	{ 0x15, 0x8ccc },
+	{ 0x16, 0x4c50 },
+	{ 0x17, 0xff00 },
+	{ 0x18, 0x0003 },
+	{ 0x19, 0x2c11 },
+	{ 0x1a, 0x830b },
+	{ 0x1b, 0x4e4b },
+	{ 0x1c, 0x0000 },
+	{ 0x1d, 0x0000 },
+	{ 0x1e, 0x0000 },
+	{ 0x1f, 0x0000 },
+	{ 0x20, 0x51ff },
+	{ 0x21, 0x8000 },
+	{ 0x22, 0x8f00 },
+	{ 0x23, 0x88f4 },
+	{ 0x24, 0x0000 },
+	{ 0x25, 0x0000 },
+	{ 0x26, 0x0000 },
+	{ 0x27, 0x0000 },
+	{ 0x28, 0x0000 },
+	{ 0x29, 0x3000 },
+	{ 0x2a, 0x0000 },
+	{ 0x2b, 0x0000 },
+	{ 0x2c, 0x0f00 },
+	{ 0x2d, 0x100f },
+	{ 0x2e, 0x2902 },
+	{ 0x2f, 0xe280 },
+	{ 0x30, 0x1000 },
+	{ 0x31, 0x8400 },
+	{ 0x32, 0x5aaa },
+	{ 0x33, 0x8420 },
+	{ 0x34, 0xa20c },
+	{ 0x35, 0x096a },
+	{ 0x36, 0x5757 },
+	{ 0x37, 0xfe05 },
+	{ 0x38, 0x4901 },
+	{ 0x39, 0x110a },
+	{ 0x3a, 0x0010 },
+	{ 0x3b, 0x60d9 },
+	{ 0x3c, 0xf214 },
+	{ 0x3d, 0xc2ba },
+	{ 0x3e, 0xa928 },
+	{ 0x3f, 0x0000 },
+	{ 0x40, 0x9800 },
+	{ 0x41, 0x0000 },
+	{ 0x42, 0x2000 },
+	{ 0x43, 0x3d90 },
+	{ 0x44, 0x4900 },
+	{ 0x45, 0x5289 },
+	{ 0x46, 0x0004 },
+	{ 0x47, 0xa47a },
+	{ 0x48, 0xd049 },
+	{ 0x49, 0x0049 },
+	{ 0x4a, 0xa83b },
+	{ 0x4b, 0x0777 },
+	{ 0x4c, 0x065c },
+	{ 0x4d, 0x7fff },
+	{ 0x4e, 0x7fff },
+	{ 0x4f, 0x0000 },
+	{ 0x50, 0x0000 },
+	{ 0x51, 0x0000 },
+	{ 0x52, 0xbf5f },
+	{ 0x53, 0x3320 },
+	{ 0x54, 0xcc00 },
+	{ 0x55, 0x0000 },
+	{ 0x56, 0x3f00 },
+	{ 0x57, 0x0000 },
+	{ 0x58, 0x0000 },
+	{ 0x59, 0x0000 },
+	{ 0x5a, 0x1300 },
+	{ 0x5b, 0x005f },
+	{ 0x5c, 0x0000 },
+	{ 0x5d, 0x1001 },
+	{ 0x5e, 0x1000 },
+	{ 0x5f, 0x0000 },
+	{ 0x60, 0x5554 },
+	{ 0x61, 0xffc0 },
+	{ 0x62, 0xa000 },
+	{ 0x63, 0xd010 },
+	{ 0x64, 0x0000 },
+	{ 0x65, 0x3fb1 },
+	{ 0x66, 0x1881 },
+	{ 0x67, 0xc810 },
+	{ 0x68, 0x2000 },
+	{ 0x69, 0xfff0 },
+	{ 0x6a, 0x0300 },
+	{ 0x6b, 0x5060 },
+	{ 0x6c, 0x0000 },
+	{ 0x6d, 0x0000 },
+	{ 0x6e, 0x0c25 },
+	{ 0x6f, 0x0c0b },
+	{ 0x70, 0x8000 },
+	{ 0x71, 0x4008 },
+	{ 0x72, 0x0000 },
+	{ 0x73, 0x0800 },
+	{ 0x74, 0xa28f },
+	{ 0x75, 0xa050 },
+	{ 0x76, 0x7fe8 },
+	{ 0x77, 0xdb8c },
+	{ 0x78, 0x0000 },
+	{ 0x79, 0x0000 },
+	{ 0x7a, 0x2a96 },
+	{ 0x7b, 0x800f },
+	{ 0x7c, 0x0200 },
+	{ 0x7d, 0x1600 },
+	{ 0x7e, 0x0000 },
+	{ 0x7f, 0x0000 },
+};
+#define INDEX_CACHE_SIZE ARRAY_SIZE(rt274_index_def)
+
+static const struct reg_default rt274_reg[] = {
+	{ 0x00170500, 0x00000400 },
+	{ 0x00220000, 0x00000031 },
+	{ 0x00239000, 0x00000057 },
+	{ 0x0023a000, 0x00000057 },
+	{ 0x00270500, 0x00000400 },
+	{ 0x00370500, 0x00000400 },
+	{ 0x00870500, 0x00000400 },
+	{ 0x00920000, 0x00000031 },
+	{ 0x00935000, 0x00000097 },
+	{ 0x00936000, 0x00000097 },
+	{ 0x00970500, 0x00000400 },
+	{ 0x00b37000, 0x00000400 },
+	{ 0x00b37200, 0x00000400 },
+	{ 0x00b37300, 0x00000400 },
+	{ 0x00c37000, 0x00000400 },
+	{ 0x00c37100, 0x00000400 },
+	{ 0x01270500, 0x00000400 },
+	{ 0x01370500, 0x00000400 },
+	{ 0x01371f00, 0x411111f0 },
+	{ 0x01937000, 0x00000000 },
+	{ 0x01970500, 0x00000400 },
+	{ 0x02050000, 0x0000001b },
+	{ 0x02139000, 0x00000080 },
+	{ 0x0213a000, 0x00000080 },
+	{ 0x02170100, 0x00000001 },
+	{ 0x02170500, 0x00000400 },
+	{ 0x02170700, 0x00000000 },
+	{ 0x02270100, 0x00000000 },
+	{ 0x02370100, 0x00000000 },
+	{ 0x01970700, 0x00000020 },
+	{ 0x00830000, 0x00000097 },
+	{ 0x00930000, 0x00000097 },
+	{ 0x01270700, 0x00000000 },
+};
+
+static bool rt274_volatile_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case 0 ... 0xff:
+	case RT274_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID):
+	case RT274_GET_HP_SENSE:
+	case RT274_GET_MIC_SENSE:
+	case RT274_PROC_COEF:
+	case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT274_MIC, 0):
+	case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT274_HP_OUT, 0):
+	case VERB_CMD(AC_VERB_GET_STREAM_FORMAT, RT274_DAC_OUT0, 0):
+	case VERB_CMD(AC_VERB_GET_STREAM_FORMAT, RT274_DAC_OUT1, 0):
+	case VERB_CMD(AC_VERB_GET_STREAM_FORMAT, RT274_ADC_IN1, 0):
+	case VERB_CMD(AC_VERB_GET_STREAM_FORMAT, RT274_ADC_IN2, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_DAC_OUT0, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_DAC_OUT1, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_ADC_IN1, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_ADC_IN2, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_DMIC1, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_DMIC2, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_MIC, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_LINE1, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_LINE2, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_HP_OUT, 0):
+	case VERB_CMD(AC_VERB_GET_CONNECT_SEL, RT274_HP_OUT, 0):
+	case VERB_CMD(AC_VERB_GET_CONNECT_SEL, RT274_MIXER_IN1, 0):
+	case VERB_CMD(AC_VERB_GET_CONNECT_SEL, RT274_MIXER_IN2, 0):
+	case VERB_CMD(AC_VERB_GET_PIN_WIDGET_CONTROL, RT274_DMIC1, 0):
+	case VERB_CMD(AC_VERB_GET_PIN_WIDGET_CONTROL, RT274_DMIC2, 0):
+	case VERB_CMD(AC_VERB_GET_PIN_WIDGET_CONTROL, RT274_MIC, 0):
+	case VERB_CMD(AC_VERB_GET_PIN_WIDGET_CONTROL, RT274_LINE1, 0):
+	case VERB_CMD(AC_VERB_GET_PIN_WIDGET_CONTROL, RT274_LINE2, 0):
+	case VERB_CMD(AC_VERB_GET_PIN_WIDGET_CONTROL, RT274_HP_OUT, 0):
+	case VERB_CMD(AC_VERB_GET_UNSOLICITED_RESPONSE, RT274_HP_OUT, 0):
+	case VERB_CMD(AC_VERB_GET_UNSOLICITED_RESPONSE, RT274_MIC, 0):
+	case VERB_CMD(AC_VERB_GET_UNSOLICITED_RESPONSE, RT274_INLINE_CMD, 0):
+		return true;
+	default:
+		return false;
+	}
+
+
+}
+
+static bool rt274_readable_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case 0 ... 0xff:
+	case RT274_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID):
+	case RT274_GET_HP_SENSE:
+	case RT274_GET_MIC_SENSE:
+	case RT274_SET_AUDIO_POWER:
+	case RT274_SET_HPO_POWER:
+	case RT274_SET_DMIC1_POWER:
+	case RT274_LOUT_MUX:
+	case RT274_HPO_MUX:
+	case RT274_ADC0_MUX:
+	case RT274_ADC1_MUX:
+	case RT274_SET_MIC:
+	case RT274_SET_PIN_HPO:
+	case RT274_SET_PIN_LOUT3:
+	case RT274_SET_PIN_DMIC1:
+	case RT274_SET_AMP_GAIN_HPO:
+	case RT274_SET_DMIC2_DEFAULT:
+	case RT274_DAC0L_GAIN:
+	case RT274_DAC0R_GAIN:
+	case RT274_DAC1L_GAIN:
+	case RT274_DAC1R_GAIN:
+	case RT274_ADCL_GAIN:
+	case RT274_ADCR_GAIN:
+	case RT274_MIC_GAIN:
+	case RT274_HPOL_GAIN:
+	case RT274_HPOR_GAIN:
+	case RT274_LOUTL_GAIN:
+	case RT274_LOUTR_GAIN:
+	case RT274_DAC_FORMAT:
+	case RT274_ADC_FORMAT:
+	case RT274_COEF_INDEX:
+	case RT274_PROC_COEF:
+	case RT274_SET_AMP_GAIN_ADC_IN1:
+	case RT274_SET_AMP_GAIN_ADC_IN2:
+	case RT274_SET_POWER(RT274_DAC_OUT0):
+	case RT274_SET_POWER(RT274_DAC_OUT1):
+	case RT274_SET_POWER(RT274_ADC_IN1):
+	case RT274_SET_POWER(RT274_ADC_IN2):
+	case RT274_SET_POWER(RT274_DMIC2):
+	case RT274_SET_POWER(RT274_MIC):
+	case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT274_MIC, 0):
+	case VERB_CMD(AC_VERB_GET_EAPD_BTLENABLE, RT274_HP_OUT, 0):
+	case VERB_CMD(AC_VERB_GET_STREAM_FORMAT, RT274_DAC_OUT0, 0):
+	case VERB_CMD(AC_VERB_GET_STREAM_FORMAT, RT274_DAC_OUT1, 0):
+	case VERB_CMD(AC_VERB_GET_STREAM_FORMAT, RT274_ADC_IN1, 0):
+	case VERB_CMD(AC_VERB_GET_STREAM_FORMAT, RT274_ADC_IN2, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_DAC_OUT0, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_DAC_OUT1, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_ADC_IN1, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_ADC_IN2, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_DMIC1, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_DMIC2, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_MIC, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_LINE1, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_LINE2, 0):
+	case VERB_CMD(AC_VERB_GET_AMP_GAIN_MUTE, RT274_HP_OUT, 0):
+	case VERB_CMD(AC_VERB_GET_CONNECT_SEL, RT274_HP_OUT, 0):
+	case VERB_CMD(AC_VERB_GET_CONNECT_SEL, RT274_MIXER_IN1, 0):
+	case VERB_CMD(AC_VERB_GET_CONNECT_SEL, RT274_MIXER_IN2, 0):
+	case VERB_CMD(AC_VERB_GET_PIN_WIDGET_CONTROL, RT274_DMIC1, 0):
+	case VERB_CMD(AC_VERB_GET_PIN_WIDGET_CONTROL, RT274_DMIC2, 0):
+	case VERB_CMD(AC_VERB_GET_PIN_WIDGET_CONTROL, RT274_MIC, 0):
+	case VERB_CMD(AC_VERB_GET_PIN_WIDGET_CONTROL, RT274_LINE1, 0):
+	case VERB_CMD(AC_VERB_GET_PIN_WIDGET_CONTROL, RT274_LINE2, 0):
+	case VERB_CMD(AC_VERB_GET_PIN_WIDGET_CONTROL, RT274_HP_OUT, 0):
+	case VERB_CMD(AC_VERB_GET_UNSOLICITED_RESPONSE, RT274_HP_OUT, 0):
+	case VERB_CMD(AC_VERB_GET_UNSOLICITED_RESPONSE, RT274_MIC, 0):
+	case VERB_CMD(AC_VERB_GET_UNSOLICITED_RESPONSE, RT274_INLINE_CMD, 0):
+		return true;
+	default:
+		return false;
+	}
+}
+
+#ifdef CONFIG_PM
+static void rt274_index_sync(struct snd_soc_codec *codec)
+{
+	struct rt274_priv *rt274 = snd_soc_codec_get_drvdata(codec);
+	int i;
+
+	for (i = 0; i < INDEX_CACHE_SIZE; i++) {
+		snd_soc_write(codec, rt274->index_cache[i].reg,
+				  rt274->index_cache[i].def);
+	}
+}
+#endif
+
+static int rt274_jack_detect(struct rt274_priv *rt274, bool *hp, bool *mic)
+{
+	unsigned int buf;
+
+	*hp = false;
+	*mic = false;
+
+	if (!rt274->codec)
+		return -EINVAL;
+
+	regmap_read(rt274->regmap, RT274_GET_HP_SENSE, &buf);
+	*hp = buf & 0x80000000;
+	regmap_read(rt274->regmap, RT274_GET_MIC_SENSE, &buf);
+	*mic = buf & 0x80000000;
+
+	pr_debug("*hp = %d *mic = %d\n", *hp, *mic);
+
+	return 0;
+}
+
+static void rt274_jack_detect_work(struct work_struct *work)
+{
+	struct rt274_priv *rt274 =
+		container_of(work, struct rt274_priv, jack_detect_work.work);
+	int status = 0;
+	bool hp = false;
+	bool mic = false;
+
+	if (rt274_jack_detect(rt274, &hp, &mic) < 0)
+		return;
+
+	if (hp == true)
+		status |= SND_JACK_HEADPHONE;
+
+	if (mic == true)
+		status |= SND_JACK_MICROPHONE;
+
+	snd_soc_jack_report(rt274->jack, status,
+		SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
+}
+
+static irqreturn_t rt274_irq(int irq, void *data);
+
+static int rt274_mic_detect(struct snd_soc_codec *codec,
+	struct snd_soc_jack *jack,  void *data)
+{
+	struct rt274_priv *rt274 = snd_soc_codec_get_drvdata(codec);
+
+	if (jack == NULL) {
+		/* Disable jack detection */
+		regmap_update_bits(rt274->regmap, RT274_EAPD_GPIO_IRQ_CTRL,
+					RT274_IRQ_EN, RT274_IRQ_DIS);
+
+		return 0;
+	}
+	rt274->jack = jack;
+
+	regmap_update_bits(rt274->regmap, RT274_EAPD_GPIO_IRQ_CTRL,
+				RT274_IRQ_EN, RT274_IRQ_EN);
+
+	/* Send an initial report */
+	rt274_irq(0, rt274);
+
+	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 rt274_snd_controls[] = {
+	SOC_DOUBLE_R_TLV("DAC0 Playback Volume", RT274_DAC0L_GAIN,
+			 RT274_DAC0R_GAIN, 0, 0x7f, 0, out_vol_tlv),
+	SOC_DOUBLE_R_TLV("DAC1 Playback Volume", RT274_DAC1L_GAIN,
+			 RT274_DAC1R_GAIN, 0, 0x7f, 0, out_vol_tlv),
+	SOC_DOUBLE_R_TLV("ADC0 Capture Volume", RT274_ADCL_GAIN,
+			    RT274_ADCR_GAIN, 0, 0x7f, 0, out_vol_tlv),
+	SOC_DOUBLE_R("ADC0 Capture Switch", RT274_ADCL_GAIN,
+			    RT274_ADCR_GAIN, RT274_MUTE_SFT, 1, 1),
+	SOC_SINGLE_TLV("AMIC Volume", RT274_MIC_GAIN,
+			    0, 0x3, 0, mic_vol_tlv),
+};
+
+static const struct snd_kcontrol_new hpol_enable_control =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch", RT274_HPOL_GAIN,
+			RT274_MUTE_SFT, 1, 1);
+
+static const struct snd_kcontrol_new hpor_enable_control =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch", RT274_HPOR_GAIN,
+			RT274_MUTE_SFT, 1, 1);
+
+static const struct snd_kcontrol_new loutl_enable_control =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch", RT274_LOUTL_GAIN,
+			RT274_MUTE_SFT, 1, 1);
+
+static const struct snd_kcontrol_new loutr_enable_control =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch", RT274_LOUTR_GAIN,
+			RT274_MUTE_SFT, 1, 1);
+
+/* ADC0 source */
+static const char * const rt274_adc_src[] = {
+	"Mic", "Line1", "Line2", "Dmic"
+};
+
+static SOC_ENUM_SINGLE_DECL(
+	rt274_adc0_enum, RT274_ADC0_MUX, RT274_ADC_SEL_SFT,
+	rt274_adc_src);
+
+static const struct snd_kcontrol_new rt274_adc0_mux =
+	SOC_DAPM_ENUM("ADC 0 source", rt274_adc0_enum);
+
+static SOC_ENUM_SINGLE_DECL(
+	rt274_adc1_enum, RT274_ADC1_MUX, RT274_ADC_SEL_SFT,
+	rt274_adc_src);
+
+static const struct snd_kcontrol_new rt274_adc1_mux =
+	SOC_DAPM_ENUM("ADC 1 source", rt274_adc1_enum);
+
+static const char * const rt274_dac_src[] = {
+	"DAC OUT0", "DAC OUT1"
+};
+/* HP-OUT source */
+static SOC_ENUM_SINGLE_DECL(rt274_hpo_enum, RT274_HPO_MUX,
+				0, rt274_dac_src);
+
+static const struct snd_kcontrol_new rt274_hpo_mux =
+SOC_DAPM_ENUM("HPO source", rt274_hpo_enum);
+
+/* Line out source */
+static SOC_ENUM_SINGLE_DECL(rt274_lout_enum, RT274_LOUT_MUX,
+				0, rt274_dac_src);
+
+static const struct snd_kcontrol_new rt274_lout_mux =
+SOC_DAPM_ENUM("LOUT source", rt274_lout_enum);
+
+static const struct snd_soc_dapm_widget rt274_dapm_widgets[] = {
+	/* Input Lines */
+	SND_SOC_DAPM_INPUT("DMIC1 Pin"),
+	SND_SOC_DAPM_INPUT("DMIC2 Pin"),
+	SND_SOC_DAPM_INPUT("MIC"),
+	SND_SOC_DAPM_INPUT("LINE1"),
+	SND_SOC_DAPM_INPUT("LINE2"),
+
+	/* DMIC */
+	SND_SOC_DAPM_PGA("DMIC1", SND_SOC_NOPM, 0, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("DMIC2", SND_SOC_NOPM, 0, 0, NULL, 0),
+
+	/* ADCs */
+	SND_SOC_DAPM_ADC("ADC 0", NULL, RT274_SET_STREAMID_ADC1, 4, 0),
+	SND_SOC_DAPM_ADC("ADC 1", NULL, RT274_SET_STREAMID_ADC2, 4, 0),
+
+	/* ADC Mux */
+	SND_SOC_DAPM_MUX("ADC 0 Mux", SND_SOC_NOPM, 0, 0,
+		&rt274_adc0_mux),
+	SND_SOC_DAPM_MUX("ADC 1 Mux", SND_SOC_NOPM, 0, 0,
+		&rt274_adc1_mux),
+
+	/* Audio Interface */
+	SND_SOC_DAPM_AIF_IN("AIF1RXL", "AIF1 Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_IN("AIF1RXR", "AIF1 Playback", 1, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("AIF1TXL", "AIF1 Capture", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("AIF1TXR", "AIF1 Capture", 1, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_IN("AIF2RXL", "AIF1 Playback", 2, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_IN("AIF2RXR", "AIF1 Playback", 3, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("AIF2TXL", "AIF1 Capture", 2, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("AIF2TXR", "AIF1 Capture", 3, SND_SOC_NOPM, 0, 0),
+
+	/* Output Side */
+	/* DACs */
+	SND_SOC_DAPM_DAC("DAC 0", NULL, RT274_SET_STREAMID_DAC0, 4, 0),
+	SND_SOC_DAPM_DAC("DAC 1", NULL, RT274_SET_STREAMID_DAC1, 4, 0),
+
+	/* Output Mux */
+	SND_SOC_DAPM_MUX("HPO Mux", SND_SOC_NOPM, 0, 0, &rt274_hpo_mux),
+	SND_SOC_DAPM_MUX("LOUT Mux", SND_SOC_NOPM, 0, 0, &rt274_lout_mux),
+
+	SND_SOC_DAPM_SUPPLY("HP Power", RT274_SET_PIN_HPO,
+		RT274_SET_PIN_SFT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("LOUT Power", RT274_SET_PIN_LOUT3,
+		RT274_SET_PIN_SFT, 0, NULL, 0),
+
+	/* Output Mixer */
+	SND_SOC_DAPM_PGA("DAC OUT0", SND_SOC_NOPM, 0, 0,
+			NULL, 0),
+	SND_SOC_DAPM_PGA("DAC OUT1", SND_SOC_NOPM, 0, 0,
+			NULL, 0),
+
+	/* Output Pga */
+	SND_SOC_DAPM_SWITCH("LOUT L", SND_SOC_NOPM, 0, 0,
+		&loutl_enable_control),
+	SND_SOC_DAPM_SWITCH("LOUT R", SND_SOC_NOPM, 0, 0,
+		&loutr_enable_control),
+	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("HPO Pin"),
+	SND_SOC_DAPM_OUTPUT("SPDIF"),
+	SND_SOC_DAPM_OUTPUT("LINE3"),
+};
+
+static const struct snd_soc_dapm_route rt274_dapm_routes[] = {
+	{"DMIC1", NULL, "DMIC1 Pin"},
+	{"DMIC2", NULL, "DMIC2 Pin"},
+
+	{"ADC 0 Mux", "Mic", "MIC"},
+	{"ADC 0 Mux", "Dmic", "DMIC1"},
+	{"ADC 0 Mux", "Line1", "LINE1"},
+	{"ADC 0 Mux", "Line2", "LINE2"},
+	{"ADC 1 Mux", "Mic", "MIC"},
+	{"ADC 1 Mux", "Dmic", "DMIC2"},
+	{"ADC 1 Mux", "Line1", "LINE1"},
+	{"ADC 1 Mux", "Line2", "LINE2"},
+
+	{"ADC 0", NULL, "ADC 0 Mux"},
+	{"ADC 1", NULL, "ADC 1 Mux"},
+
+	{"AIF1TXL", NULL, "ADC 0"},
+	{"AIF1TXR", NULL, "ADC 0"},
+	{"AIF2TXL", NULL, "ADC 1"},
+	{"AIF2TXR", NULL, "ADC 1"},
+
+	{"DAC 0", NULL, "AIF1RXL"},
+	{"DAC 0", NULL, "AIF1RXR"},
+	{"DAC 1", NULL, "AIF2RXL"},
+	{"DAC 1", NULL, "AIF2RXR"},
+
+	{"DAC OUT0", NULL, "DAC 0"},
+
+	{"DAC OUT1", NULL, "DAC 1"},
+
+	{"LOUT Mux", "DAC OUT0", "DAC OUT0"},
+	{"LOUT Mux", "DAC OUT1", "DAC OUT1"},
+
+	{"LOUT L", "Switch", "LOUT Mux"},
+	{"LOUT R", "Switch", "LOUT Mux"},
+	{"LOUT L", NULL, "LOUT Power"},
+	{"LOUT R", NULL, "LOUT Power"},
+
+	{"LINE3", NULL, "LOUT L"},
+	{"LINE3", NULL, "LOUT R"},
+
+	{"HPO Mux", "DAC OUT0", "DAC OUT0"},
+	{"HPO Mux", "DAC OUT1", "DAC OUT1"},
+
+	{"HPO L", "Switch", "HPO Mux"},
+	{"HPO R", "Switch", "HPO Mux"},
+	{"HPO L", NULL, "HP Power"},
+	{"HPO R", NULL, "HP Power"},
+
+	{"HPO Pin", NULL, "HPO L"},
+	{"HPO Pin", NULL, "HPO R"},
+};
+
+static int rt274_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 rt274_priv *rt274 = snd_soc_codec_get_drvdata(codec);
+	unsigned int val = 0;
+	int d_len_code = 0, c_len_code = 0;
+
+	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 (rt274->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), rt274->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), rt274->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;
+	}
+
+	switch (params_width(params)) {
+	/* bit 6:4 Bits per Sample */
+	case 16:
+		d_len_code = 0;
+		c_len_code = 0;
+		val |= (0x1 << 4);
+		break;
+	case 32:
+		d_len_code = 2;
+		c_len_code = 3;
+		val |= (0x4 << 4);
+		break;
+	case 20:
+		d_len_code = 1;
+		c_len_code = 1;
+		val |= (0x2 << 4);
+		break;
+	case 24:
+		d_len_code = 2;
+		c_len_code = 2;
+		val |= (0x3 << 4);
+		break;
+	case 8:
+		d_len_code = 3;
+		c_len_code = 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (rt274->master)
+		c_len_code = 0x3;
+
+	snd_soc_update_bits(codec,
+		RT274_I2S_CTRL1, 0xc018, d_len_code << 3 | c_len_code << 14);
+	dev_dbg(codec->dev, "format val = 0x%x\n", val);
+
+	snd_soc_update_bits(codec, RT274_DAC_FORMAT, 0x407f, val);
+	snd_soc_update_bits(codec, RT274_ADC_FORMAT, 0x407f, val);
+
+	return 0;
+}
+
+static int rt274_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct rt274_priv *rt274 = snd_soc_codec_get_drvdata(codec);
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		snd_soc_update_bits(codec,
+			RT274_I2S_CTRL1, RT274_I2S_MODE_MASK, RT274_I2S_MODE_M);
+		rt274->master = true;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		snd_soc_update_bits(codec,
+			RT274_I2S_CTRL1, RT274_I2S_MODE_MASK, RT274_I2S_MODE_S);
+		rt274->master = false;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		snd_soc_update_bits(codec, RT274_I2S_CTRL1,
+					RT274_I2S_FMT_MASK, RT274_I2S_FMT_I2S);
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		snd_soc_update_bits(codec, RT274_I2S_CTRL1,
+					RT274_I2S_FMT_MASK, RT274_I2S_FMT_LJ);
+		break;
+	case SND_SOC_DAIFMT_DSP_A:
+		snd_soc_update_bits(codec, RT274_I2S_CTRL1,
+					RT274_I2S_FMT_MASK, RT274_I2S_FMT_PCMA);
+		break;
+	case SND_SOC_DAIFMT_DSP_B:
+		snd_soc_update_bits(codec, RT274_I2S_CTRL1,
+					RT274_I2S_FMT_MASK, RT274_I2S_FMT_PCMB);
+		break;
+	default:
+		return -EINVAL;
+	}
+	/* bit 15 Stream Type 0:PCM 1:Non-PCM */
+	snd_soc_update_bits(codec, RT274_DAC_FORMAT, 0x8000, 0);
+	snd_soc_update_bits(codec, RT274_ADC_FORMAT, 0x8000, 0);
+
+	return 0;
+}
+
+static int rt274_set_dai_pll(struct snd_soc_dai *dai, int pll_id, int source,
+			unsigned int freq_in, unsigned int freq_out)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct rt274_priv *rt274 = snd_soc_codec_get_drvdata(codec);
+
+	switch (source) {
+	case RT274_PLL2_S_MCLK:
+		snd_soc_update_bits(codec, RT274_PLL2_CTRL,
+				RT274_PLL2_SRC_MASK, RT274_PLL2_SRC_MCLK);
+		break;
+	default:
+		dev_warn(codec->dev, "invalid pll source, use BCLK\n");
+	case RT274_PLL2_S_BCLK:
+		snd_soc_update_bits(codec, RT274_PLL2_CTRL,
+				RT274_PLL2_SRC_MASK, RT274_PLL2_SRC_BCLK);
+		break;
+	}
+
+	if (source == RT274_PLL2_S_BCLK) {
+		snd_soc_update_bits(codec, RT274_MCLK_CTRL,
+				(0x3 << 12), (0x3 << 12));
+		switch (rt274->fs) {
+		case 50:
+			snd_soc_write(codec, 0x7a, 0xaab6);
+			snd_soc_write(codec, 0x7b, 0x0301);
+			snd_soc_write(codec, 0x7c, 0x04fe);
+			break;
+		case 64:
+			snd_soc_write(codec, 0x7a, 0xaa96);
+			snd_soc_write(codec, 0x7b, 0x8003);
+			snd_soc_write(codec, 0x7c, 0x081e);
+			break;
+		case 128:
+			snd_soc_write(codec, 0x7a, 0xaa96);
+			snd_soc_write(codec, 0x7b, 0x8003);
+			snd_soc_write(codec, 0x7c, 0x080e);
+			break;
+		default:
+			dev_warn(codec->dev, "invalid freq_in, assume 4.8M\n");
+		case 100:
+			snd_soc_write(codec, 0x7a, 0xaab6);
+			snd_soc_write(codec, 0x7b, 0x0301);
+			snd_soc_write(codec, 0x7c, 0x047e);
+			break;
+		}
+	}
+
+	return 0;
+}
+
+static int rt274_set_dai_sysclk(struct snd_soc_dai *dai,
+				int clk_id, unsigned int freq, int dir)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct rt274_priv *rt274 = snd_soc_codec_get_drvdata(codec);
+	unsigned int clk_src, mclk_en;
+
+	dev_dbg(codec->dev, "%s freq=%d\n", __func__, freq);
+
+	switch (clk_id) {
+	case RT274_SCLK_S_MCLK:
+		mclk_en = RT274_MCLK_MODE_EN;
+		clk_src = RT274_CLK_SRC_MCLK;
+		break;
+	case RT274_SCLK_S_PLL1:
+		mclk_en = RT274_MCLK_MODE_DIS;
+		clk_src = RT274_CLK_SRC_MCLK;
+		break;
+	case RT274_SCLK_S_PLL2:
+		mclk_en = RT274_MCLK_MODE_EN;
+		clk_src = RT274_CLK_SRC_PLL2;
+		break;
+	default:
+		mclk_en = RT274_MCLK_MODE_DIS;
+		clk_src = RT274_CLK_SRC_MCLK;
+		dev_warn(codec->dev, "invalid sysclk source, use PLL1\n");
+		break;
+	}
+	snd_soc_update_bits(codec, RT274_MCLK_CTRL,
+			RT274_MCLK_MODE_MASK, mclk_en);
+	snd_soc_update_bits(codec, RT274_CLK_CTRL,
+			RT274_CLK_SRC_MASK, clk_src);
+
+	switch (freq) {
+	case 19200000:
+		if (clk_id == RT274_SCLK_S_MCLK) {
+			dev_err(codec->dev, "Should not use MCLK\n");
+			return -EINVAL;
+		}
+		snd_soc_update_bits(codec,
+			RT274_I2S_CTRL2, 0x40, 0x40);
+		break;
+	case 24000000:
+		if (clk_id == RT274_SCLK_S_MCLK) {
+			dev_err(codec->dev, "Should not use MCLK\n");
+			return -EINVAL;
+		}
+		snd_soc_update_bits(codec,
+			RT274_I2S_CTRL2, 0x40, 0x0);
+		break;
+	case 12288000:
+	case 11289600:
+		snd_soc_update_bits(codec,
+			RT274_MCLK_CTRL, 0x1fcf, 0x0008);
+		break;
+	case 24576000:
+	case 22579200:
+		snd_soc_update_bits(codec,
+			RT274_MCLK_CTRL, 0x1fcf, 0x1543);
+		break;
+	default:
+		dev_err(codec->dev, "Unsupported system clock\n");
+		return -EINVAL;
+	}
+
+	rt274->sys_clk = freq;
+	rt274->clk_id = clk_id;
+
+	return 0;
+}
+
+static int rt274_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct rt274_priv *rt274 = snd_soc_codec_get_drvdata(codec);
+
+	dev_dbg(codec->dev, "%s ratio=%d\n", __func__, ratio);
+	rt274->fs = ratio;
+	if ((ratio / 50) == 0)
+		snd_soc_update_bits(codec,
+			RT274_I2S_CTRL1, 0x1000, 0x1000);
+	else
+		snd_soc_update_bits(codec,
+			RT274_I2S_CTRL1, 0x1000, 0x0);
+
+
+	return 0;
+}
+
+static int rt274_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
+			unsigned int rx_mask, int slots, int slot_width)
+
+{
+	struct snd_soc_codec *codec = dai->codec;
+
+	if (rx_mask || tx_mask) {
+		snd_soc_update_bits(codec,
+			RT274_I2S_CTRL1, RT274_TDM_EN, RT274_TDM_EN);
+	} else {
+		snd_soc_update_bits(codec,
+			RT274_I2S_CTRL1, RT274_TDM_EN, RT274_TDM_DIS);
+		return 0;
+	}
+
+	switch (slots) {
+	case 4:
+		snd_soc_update_bits(codec,
+			RT274_I2S_CTRL1, RT274_TDM_CH_NUM, RT274_TDM_4CH);
+		break;
+	case 2:
+		snd_soc_update_bits(codec,
+			RT274_I2S_CTRL1, RT274_TDM_CH_NUM, RT274_TDM_2CH);
+		break;
+	default:
+		dev_err(codec->dev,
+			"Support 2 or 4 slots TDM only\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int rt274_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,
+				RT274_SET_AUDIO_POWER, AC_PWRST_D0);
+		}
+		break;
+
+	case SND_SOC_BIAS_STANDBY:
+		snd_soc_write(codec,
+			RT274_SET_AUDIO_POWER, AC_PWRST_D3);
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static irqreturn_t rt274_irq(int irq, void *data)
+{
+	struct rt274_priv *rt274 = data;
+	bool hp = false;
+	bool mic = false;
+	int ret, status = 0;
+
+	/* Clear IRQ */
+	regmap_update_bits(rt274->regmap, RT274_EAPD_GPIO_IRQ_CTRL,
+				RT274_IRQ_CLR, RT274_IRQ_CLR);
+
+	ret = rt274_jack_detect(rt274, &hp, &mic);
+
+	if (ret == 0) {
+		if (hp == true)
+			status |= SND_JACK_HEADPHONE;
+
+		if (mic == true)
+			status |= SND_JACK_MICROPHONE;
+
+		snd_soc_jack_report(rt274->jack, status,
+			SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
+
+		pm_wakeup_event(&rt274->i2c->dev, 300);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int rt274_probe(struct snd_soc_codec *codec)
+{
+	struct rt274_priv *rt274 = snd_soc_codec_get_drvdata(codec);
+
+	rt274->codec = codec;
+
+	if (rt274->i2c->irq) {
+		INIT_DELAYED_WORK(&rt274->jack_detect_work,
+					rt274_jack_detect_work);
+		schedule_delayed_work(&rt274->jack_detect_work,
+					msecs_to_jiffies(1250));
+	}
+
+	return 0;
+}
+
+static int rt274_remove(struct snd_soc_codec *codec)
+{
+	struct rt274_priv *rt274 = snd_soc_codec_get_drvdata(codec);
+
+	cancel_delayed_work_sync(&rt274->jack_detect_work);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int rt274_suspend(struct snd_soc_codec *codec)
+{
+	struct rt274_priv *rt274 = snd_soc_codec_get_drvdata(codec);
+
+	regcache_cache_only(rt274->regmap, true);
+	regcache_mark_dirty(rt274->regmap);
+
+	return 0;
+}
+
+static int rt274_resume(struct snd_soc_codec *codec)
+{
+	struct rt274_priv *rt274 = snd_soc_codec_get_drvdata(codec);
+
+	regcache_cache_only(rt274->regmap, false);
+	rt274_index_sync(codec);
+	regcache_sync(rt274->regmap);
+
+	return 0;
+}
+#else
+#define rt274_suspend NULL
+#define rt274_resume NULL
+#endif
+
+#define RT274_STEREO_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
+#define RT274_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 rt274_aif_dai_ops = {
+	.hw_params = rt274_hw_params,
+	.set_fmt = rt274_set_dai_fmt,
+	.set_sysclk = rt274_set_dai_sysclk,
+	.set_pll = rt274_set_dai_pll,
+	.set_bclk_ratio = rt274_set_bclk_ratio,
+	.set_tdm_slot = rt274_set_tdm_slot,
+};
+
+static struct snd_soc_dai_driver rt274_dai[] = {
+	{
+		.name = "rt274-aif1",
+		.id = RT274_AIF1,
+		.playback = {
+			.stream_name = "AIF1 Playback",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT274_STEREO_RATES,
+			.formats = RT274_FORMATS,
+		},
+		.capture = {
+			.stream_name = "AIF1 Capture",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT274_STEREO_RATES,
+			.formats = RT274_FORMATS,
+		},
+		.ops = &rt274_aif_dai_ops,
+		.symmetric_rates = 1,
+	},
+};
+
+static const struct snd_soc_codec_driver soc_codec_dev_rt274 = {
+	.probe = rt274_probe,
+	.remove = rt274_remove,
+	.suspend = rt274_suspend,
+	.resume = rt274_resume,
+	.set_bias_level = rt274_set_bias_level,
+	.idle_bias_off = true,
+	.component_driver = {
+		.controls		= rt274_snd_controls,
+		.num_controls		= ARRAY_SIZE(rt274_snd_controls),
+		.dapm_widgets		= rt274_dapm_widgets,
+		.num_dapm_widgets	= ARRAY_SIZE(rt274_dapm_widgets),
+		.dapm_routes		= rt274_dapm_routes,
+		.num_dapm_routes	= ARRAY_SIZE(rt274_dapm_routes),
+	},
+	.set_jack = rt274_mic_detect,
+};
+
+static const struct regmap_config rt274_regmap = {
+	.reg_bits = 32,
+	.val_bits = 32,
+	.max_register = 0x05bfffff,
+	.volatile_reg = rt274_volatile_register,
+	.readable_reg = rt274_readable_register,
+	.reg_write = rl6347a_hw_write,
+	.reg_read = rl6347a_hw_read,
+	.cache_type = REGCACHE_RBTREE,
+	.reg_defaults = rt274_reg,
+	.num_reg_defaults = ARRAY_SIZE(rt274_reg),
+};
+
+#ifdef CONFIG_OF
+static const struct of_device_id rt274_of_match[] = {
+	{.compatible = "realtek,rt274"},
+	{},
+};
+MODULE_DEVICE_TABLE(of, rt274_of_match);
+#endif
+
+static const struct i2c_device_id rt274_i2c_id[] = {
+	{"rt274", 0},
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, rt274_i2c_id);
+
+static const struct acpi_device_id rt274_acpi_match[] = {
+	{ "10EC0274", 0 },
+	{},
+};
+MODULE_DEVICE_TABLE(acpi, rt274_acpi_match);
+
+static int rt274_i2c_probe(struct i2c_client *i2c,
+			   const struct i2c_device_id *id)
+{
+	struct rt274_priv *rt274;
+
+	int ret;
+	unsigned int val;
+
+	rt274 = devm_kzalloc(&i2c->dev,	sizeof(*rt274),
+				GFP_KERNEL);
+	if (rt274 == NULL)
+		return -ENOMEM;
+
+	rt274->regmap = devm_regmap_init(&i2c->dev, NULL, i2c, &rt274_regmap);
+	if (IS_ERR(rt274->regmap)) {
+		ret = PTR_ERR(rt274->regmap);
+		dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
+			ret);
+		return ret;
+	}
+
+	regmap_read(rt274->regmap,
+		RT274_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID), &val);
+	if (val != RT274_VENDOR_ID) {
+		dev_err(&i2c->dev,
+			"Device with ID register %#x is not rt274\n", val);
+		return -ENODEV;
+	}
+
+	rt274->index_cache = devm_kmemdup(&i2c->dev, rt274_index_def,
+					  sizeof(rt274_index_def), GFP_KERNEL);
+	if (!rt274->index_cache)
+		return -ENOMEM;
+
+	rt274->index_cache_size = INDEX_CACHE_SIZE;
+	rt274->i2c = i2c;
+	i2c_set_clientdata(i2c, rt274);
+
+	/* reset codec */
+	regmap_write(rt274->regmap, RT274_RESET, 0);
+	regmap_update_bits(rt274->regmap, 0x1a, 0x4000, 0x4000);
+
+	/* Set Pad PDB is floating */
+	regmap_update_bits(rt274->regmap, RT274_PAD_CTRL12, 0x3, 0x0);
+	regmap_write(rt274->regmap, RT274_COEF5b_INDEX, 0x01);
+	regmap_write(rt274->regmap, RT274_COEF5b_COEF, 0x8540);
+	regmap_update_bits(rt274->regmap, 0x6f, 0x0100, 0x0100);
+	/* Combo jack auto detect */
+	regmap_write(rt274->regmap, 0x4a, 0x201b);
+	/* Aux mode off */
+	regmap_update_bits(rt274->regmap, 0x6f, 0x3000, 0x2000);
+	/* HP DC Calibration */
+	regmap_update_bits(rt274->regmap, 0x6f, 0xf, 0x0);
+	/* Set NID=58h.Index 00h [15]= 1b; */
+	regmap_write(rt274->regmap, RT274_COEF58_INDEX, 0x00);
+	regmap_write(rt274->regmap, RT274_COEF58_COEF, 0xb888);
+	msleep(500);
+	regmap_update_bits(rt274->regmap, 0x6f, 0xf, 0xb);
+	regmap_write(rt274->regmap, RT274_COEF58_INDEX, 0x00);
+	regmap_write(rt274->regmap, RT274_COEF58_COEF, 0x3888);
+	/* Set pin widget */
+	regmap_write(rt274->regmap, RT274_SET_PIN_HPO, 0x40);
+	regmap_write(rt274->regmap, RT274_SET_PIN_LOUT3, 0x40);
+	regmap_write(rt274->regmap, RT274_SET_MIC, 0x20);
+	regmap_write(rt274->regmap, RT274_SET_PIN_DMIC1, 0x20);
+
+	regmap_update_bits(rt274->regmap, RT274_I2S_CTRL2, 0xc004, 0x4004);
+	regmap_update_bits(rt274->regmap, RT274_EAPD_GPIO_IRQ_CTRL,
+				RT274_GPI2_SEL_MASK, RT274_GPI2_SEL_DMIC_CLK);
+
+	/* jack detection */
+	regmap_write(rt274->regmap, RT274_UNSOLICITED_HP_OUT, 0x81);
+	regmap_write(rt274->regmap, RT274_UNSOLICITED_MIC, 0x82);
+
+	if (rt274->i2c->irq) {
+		ret = request_threaded_irq(rt274->i2c->irq, NULL, rt274_irq,
+			IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "rt274", rt274);
+		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_rt274,
+				     rt274_dai, ARRAY_SIZE(rt274_dai));
+
+	return ret;
+}
+
+static int rt274_i2c_remove(struct i2c_client *i2c)
+{
+	struct rt274_priv *rt274 = i2c_get_clientdata(i2c);
+
+	if (i2c->irq)
+		free_irq(i2c->irq, rt274);
+	snd_soc_unregister_codec(&i2c->dev);
+
+	return 0;
+}
+
+
+static struct i2c_driver rt274_i2c_driver = {
+	.driver = {
+		   .name = "rt274",
+		   .acpi_match_table = ACPI_PTR(rt274_acpi_match),
+#ifdef CONFIG_OF
+		   .of_match_table = of_match_ptr(rt274_of_match),
+#endif
+		   },
+	.probe = rt274_i2c_probe,
+	.remove = rt274_i2c_remove,
+	.id_table = rt274_i2c_id,
+};
+
+module_i2c_driver(rt274_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC RT274 driver");
+MODULE_AUTHOR("Bard Liao <bardliao@realtek.com>");
+MODULE_LICENSE("GPL v2");

sound/soc/codecs/rt274.h

@@ -0,0 +1,217 @@
+/*
+ * rt274.h  --  RT274 ALSA SoC audio driver
+ *
+ * Copyright 2016 Realtek Microelectronics
+ * 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.
+ */
+
+#ifndef __RT274_H__
+#define __RT274_H__
+
+#define VERB_CMD(V, N, D) ((N << 20) | (V << 8) | D)
+
+#define RT274_AUDIO_FUNCTION_GROUP			0x01
+#define RT274_DAC_OUT0					0x02
+#define RT274_DAC_OUT1					0x03
+#define RT274_ADC_IN2					0x08
+#define RT274_ADC_IN1					0x09
+#define RT274_DIG_CVT					0x0a
+#define RT274_DMIC1					0x12
+#define RT274_DMIC2					0x13
+#define RT274_MIC					0x19
+#define RT274_LINE1					0x1a
+#define RT274_LINE2					0x1b
+#define RT274_LINE3					0x16
+#define RT274_SPDIF					0x1e
+#define RT274_VENDOR_REGISTERS				0x20
+#define RT274_HP_OUT					0x21
+#define RT274_MIXER_IN1					0x22
+#define RT274_MIXER_IN2					0x23
+#define RT274_INLINE_CMD				0x55
+
+#define RT274_SET_PIN_SFT				6
+#define RT274_SET_PIN_ENABLE				0x40
+#define RT274_SET_PIN_DISABLE				0
+#define RT274_SET_EAPD_HIGH				0x2
+#define RT274_SET_EAPD_LOW				0
+
+#define RT274_MUTE_SFT					7
+
+/* Verb commands */
+#define RT274_RESET\
+	VERB_CMD(AC_VERB_SET_CODEC_RESET, RT274_AUDIO_FUNCTION_GROUP, 0)
+#define RT274_GET_PARAM(NID, PARAM) VERB_CMD(AC_VERB_PARAMETERS, NID, PARAM)
+#define RT274_SET_POWER(NID) VERB_CMD(AC_VERB_SET_POWER_STATE, NID, 0)
+#define RT274_SET_AUDIO_POWER RT274_SET_POWER(RT274_AUDIO_FUNCTION_GROUP)
+#define RT274_SET_HPO_POWER RT274_SET_POWER(RT274_HP_OUT)
+#define RT274_SET_DMIC1_POWER RT274_SET_POWER(RT274_DMIC1)
+#define RT274_LOUT_MUX\
+	VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT274_LINE3, 0)
+#define RT274_HPO_MUX\
+	VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT274_HP_OUT, 0)
+#define RT274_ADC0_MUX\
+	VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT274_MIXER_IN1, 0)
+#define RT274_ADC1_MUX\
+	VERB_CMD(AC_VERB_SET_CONNECT_SEL, RT274_MIXER_IN2, 0)
+#define RT274_SET_MIC\
+	VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT274_MIC, 0)
+#define RT274_SET_PIN_LOUT3\
+	VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT274_LINE3, 0)
+#define RT274_SET_PIN_HPO\
+	VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT274_HP_OUT, 0)
+#define RT274_SET_PIN_DMIC1\
+	VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT274_DMIC1, 0)
+#define RT274_SET_PIN_SPDIF\
+	VERB_CMD(AC_VERB_SET_PIN_WIDGET_CONTROL, RT274_SPDIF, 0)
+#define RT274_SET_PIN_DIG_CVT\
+	VERB_CMD(AC_VERB_SET_DIGI_CONVERT_1, RT274_DIG_CVT, 0)
+#define RT274_SET_AMP_GAIN_HPO\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_HP_OUT, 0)
+#define RT274_SET_AMP_GAIN_ADC_IN1\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_ADC_IN1, 0)
+#define RT274_SET_AMP_GAIN_ADC_IN2\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_ADC_IN2, 0)
+#define RT274_GET_HP_SENSE\
+	VERB_CMD(AC_VERB_GET_PIN_SENSE, RT274_HP_OUT, 0)
+#define RT274_GET_MIC_SENSE\
+	VERB_CMD(AC_VERB_GET_PIN_SENSE, RT274_MIC, 0)
+#define RT274_SET_DMIC2_DEFAULT\
+	VERB_CMD(AC_VERB_SET_CONFIG_DEFAULT_BYTES_3, RT274_DMIC2, 0)
+#define RT274_SET_SPDIF_DEFAULT\
+	VERB_CMD(AC_VERB_SET_CONFIG_DEFAULT_BYTES_3, RT274_SPDIF, 0)
+#define RT274_DAC0L_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_DAC_OUT0, 0xa000)
+#define RT274_DAC0R_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_DAC_OUT0, 0x9000)
+#define RT274_DAC1L_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_DAC_OUT1, 0xa000)
+#define RT274_DAC1R_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_DAC_OUT1, 0x9000)
+#define RT274_ADCL_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_ADC_IN1, 0x6000)
+#define RT274_ADCR_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_ADC_IN1, 0x5000)
+#define RT274_MIC_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_MIC, 0x7000)
+#define RT274_LOUTL_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_LINE3, 0xa000)
+#define RT274_LOUTR_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_LINE3, 0x9000)
+#define RT274_HPOL_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_HP_OUT, 0xa000)
+#define RT274_HPOR_GAIN\
+	VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, RT274_HP_OUT, 0x9000)
+#define RT274_DAC_FORMAT\
+	VERB_CMD(AC_VERB_SET_STREAM_FORMAT, RT274_DAC_OUT0, 0)
+#define RT274_ADC_FORMAT\
+	VERB_CMD(AC_VERB_SET_STREAM_FORMAT, RT274_ADC_IN1, 0)
+#define RT274_COEF_INDEX\
+	VERB_CMD(AC_VERB_SET_COEF_INDEX, RT274_VENDOR_REGISTERS, 0)
+#define RT274_PROC_COEF\
+	VERB_CMD(AC_VERB_SET_PROC_COEF, RT274_VENDOR_REGISTERS, 0)
+#define RT274_UNSOLICITED_INLINE_CMD\
+	VERB_CMD(AC_VERB_SET_UNSOLICITED_ENABLE, RT274_INLINE_CMD, 0)
+#define RT274_UNSOLICITED_HP_OUT\
+	VERB_CMD(AC_VERB_SET_UNSOLICITED_ENABLE, RT274_HP_OUT, 0)
+#define RT274_UNSOLICITED_MIC\
+	VERB_CMD(AC_VERB_SET_UNSOLICITED_ENABLE, RT274_MIC, 0)
+#define RT274_COEF58_INDEX\
+	VERB_CMD(AC_VERB_SET_COEF_INDEX, 0x58, 0)
+#define RT274_COEF58_COEF\
+	VERB_CMD(AC_VERB_SET_PROC_COEF, 0x58, 0)
+#define RT274_COEF5b_INDEX\
+	VERB_CMD(AC_VERB_SET_COEF_INDEX, 0x5b, 0)
+#define RT274_COEF5b_COEF\
+	VERB_CMD(AC_VERB_SET_PROC_COEF, 0x5b, 0)
+#define RT274_SET_STREAMID_DAC0\
+	VERB_CMD(AC_VERB_SET_CHANNEL_STREAMID, RT274_DAC_OUT0, 0)
+#define RT274_SET_STREAMID_DAC1\
+	VERB_CMD(AC_VERB_SET_CHANNEL_STREAMID, RT274_DAC_OUT1, 0)
+#define RT274_SET_STREAMID_ADC1\
+	VERB_CMD(AC_VERB_SET_CHANNEL_STREAMID, RT274_ADC_IN1, 0)
+#define RT274_SET_STREAMID_ADC2\
+	VERB_CMD(AC_VERB_SET_CHANNEL_STREAMID, RT274_ADC_IN2, 0)
+
+/* Index registers */
+#define RT274_EAPD_GPIO_IRQ_CTRL	0x10
+#define RT274_PAD_CTRL12		0x35
+#define RT274_I2S_CTRL1			0x63
+#define RT274_I2S_CTRL2			0x64
+#define RT274_MCLK_CTRL			0x71
+#define RT274_CLK_CTRL			0x72
+#define RT274_PLL2_CTRL			0x7b
+
+
+/* EAPD GPIO IRQ control (Index 0x10) */
+#define RT274_IRQ_DIS		(0x0 << 13)
+#define RT274_IRQ_EN		(0x1 << 13)
+#define RT274_IRQ_CLR		(0x1 << 12)
+#define RT274_GPI2_SEL_MASK	(0x3 << 7)
+#define RT274_GPI2_SEL_GPIO2	(0x0 << 7)
+#define RT274_GPI2_SEL_I2S	(0x1 << 7)
+#define RT274_GPI2_SEL_DMIC_CLK	(0x2 << 7)
+#define RT274_GPI2_SEL_CBJ	(0x3 << 7)
+
+/* Front I2S_Interface control 1 (Index 0x63) */
+#define RT274_I2S_MODE_MASK	(0x1 << 11)
+#define RT274_I2S_MODE_S	(0x0 << 11)
+#define RT274_I2S_MODE_M	(0x1 << 11)
+#define RT274_TDM_DIS		(0x0 << 10)
+#define RT274_TDM_EN		(0x1 << 10)
+#define RT274_TDM_CH_NUM	(0x1 << 7)
+#define RT274_TDM_2CH		(0x0 << 7)
+#define RT274_TDM_4CH		(0x1 << 7)
+#define RT274_I2S_FMT_MASK	(0x3 << 8)
+#define RT274_I2S_FMT_I2S	(0x0 << 8)
+#define RT274_I2S_FMT_LJ	(0x1 << 8)
+#define RT274_I2S_FMT_PCMA	(0x2 << 8)
+#define RT274_I2S_FMT_PCMB	(0x3 << 8)
+
+/* MCLK clock domain control (Index 0x71) */
+#define RT274_MCLK_MODE_MASK	(0x1 << 14)
+#define RT274_MCLK_MODE_DIS	(0x0 << 14)
+#define RT274_MCLK_MODE_EN	(0x1 << 14)
+
+/* Clock control (Index 0x72) */
+#define RT274_CLK_SRC_MASK	(0x7 << 3)
+#define RT274_CLK_SRC_MCLK	(0x0 << 3)
+#define RT274_CLK_SRC_PLL2	(0x3 << 3)
+
+/* PLL2 control (Index 0x7b) */
+#define RT274_PLL2_SRC_MASK	(0x1 << 13)
+#define RT274_PLL2_SRC_MCLK	(0x0 << 13)
+#define RT274_PLL2_SRC_BCLK	(0x1 << 13)
+
+/* HP-OUT (0x21) */
+#define RT274_M_HP_MUX_SFT	14
+#define RT274_HP_SEL_MASK	0x1
+#define RT274_HP_SEL_SFT	0
+#define RT274_HP_SEL_F		0
+#define RT274_HP_SEL_S		1
+
+/* ADC (0x22) (0x23) */
+#define RT274_ADC_SEL_MASK	0x7
+#define RT274_ADC_SEL_SFT	0
+#define RT274_ADC_SEL_MIC	0
+#define RT274_ADC_SEL_LINE1	1
+#define RT274_ADC_SEL_LINE2	2
+#define RT274_ADC_SEL_DMIC	3
+
+#define RT274_SCLK_S_MCLK	0
+#define RT274_SCLK_S_PLL1	1
+#define RT274_SCLK_S_PLL2	2
+
+#define RT274_PLL2_S_MCLK	0
+#define RT274_PLL2_S_BCLK	1
+
+enum {
+	RT274_AIF1,
+	RT274_AIFS,
+};
+
+#endif /* __RT274_H__ */
+

sound/soc/codecs/rt286.c

@@ -1046,7 +1046,7 @@ static struct snd_soc_dai_driver rt286_dai[] = {
 
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt286 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt286 = {
 	.probe = rt286_probe,
 	.remove = rt286_remove,
 	.suspend = rt286_suspend,

sound/soc/codecs/rt298.c

@@ -1113,7 +1113,7 @@ static struct snd_soc_dai_driver rt298_dai[] = {
 
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt298 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt298 = {
 	.probe = rt298_probe,
 	.remove = rt298_remove,
 	.suspend = rt298_suspend,

sound/soc/codecs/rt5514-spi.c

@@ -260,7 +260,7 @@ static int rt5514_spi_pcm_probe(struct snd_soc_platform *platform)
 	return 0;
 }
 
-static struct snd_soc_platform_driver rt5514_spi_platform = {
+static const struct snd_soc_platform_driver rt5514_spi_platform = {
 	.probe = rt5514_spi_pcm_probe,
 	.ops = &rt5514_spi_pcm_ops,
 };

sound/soc/codecs/rt5514.c

@@ -1042,7 +1042,7 @@ struct snd_soc_dai_driver rt5514_dai[] = {
 	}
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt5514 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt5514 = {
 	.probe = rt5514_probe,
 	.idle_bias_off = true,
 	.set_bias_level = rt5514_set_bias_level,

sound/soc/codecs/rt5616.c

@@ -1294,7 +1294,7 @@ static struct snd_soc_dai_driver rt5616_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt5616 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt5616 = {
 	.probe = rt5616_probe,
 	.suspend = rt5616_suspend,
 	.resume = rt5616_resume,

sound/soc/codecs/rt5631.c

@@ -1653,7 +1653,7 @@ static struct snd_soc_dai_driver rt5631_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt5631 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt5631 = {
 	.probe = rt5631_probe,
 	.set_bias_level = rt5631_set_bias_level,
 	.suspend_bias_off = true,

sound/soc/codecs/rt5640.c

@@ -2259,7 +2259,7 @@ static struct snd_soc_dai_driver rt5640_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt5640 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt5640 = {
 	.probe = rt5640_probe,
 	.remove = rt5640_remove,
 	.suspend = rt5640_suspend,

sound/soc/codecs/rt5645.c

@@ -3473,7 +3473,7 @@ static struct snd_soc_dai_driver rt5645_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt5645 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt5645 = {
 	.probe = rt5645_probe,
 	.remove = rt5645_remove,
 	.suspend = rt5645_suspend,

sound/soc/codecs/rt5651.c

@@ -1664,7 +1664,7 @@ static struct snd_soc_dai_driver rt5651_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt5651 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt5651 = {
 	.probe = rt5651_probe,
 	.suspend = rt5651_suspend,
 	.resume = rt5651_resume,

sound/soc/codecs/rt5659.c

@@ -3730,7 +3730,7 @@ static struct snd_soc_dai_driver rt5659_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt5659 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt5659 = {
 	.probe = rt5659_probe,
 	.remove = rt5659_remove,
 	.suspend = rt5659_suspend,

sound/soc/codecs/rt5660.c

@@ -1197,7 +1197,7 @@ static struct snd_soc_dai_driver rt5660_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt5660 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt5660 = {
 	.probe = rt5660_probe,
 	.remove = rt5660_remove,
 	.suspend = rt5660_suspend,

sound/soc/codecs/rt5663.c

@@ -2891,7 +2891,7 @@ static struct snd_soc_dai_driver rt5663_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt5663 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt5663 = {
 	.probe = rt5663_probe,
 	.remove = rt5663_remove,
 	.suspend = rt5663_suspend,

sound/soc/codecs/rt5665.c

@@ -4562,7 +4562,7 @@ static struct snd_soc_dai_driver rt5665_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt5665 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt5665 = {
 	.probe = rt5665_probe,
 	.remove = rt5665_remove,
 	.suspend = rt5665_suspend,

sound/soc/codecs/rt5670.c

@@ -2765,7 +2765,7 @@ static struct snd_soc_dai_driver rt5670_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt5670 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt5670 = {
 	.probe = rt5670_probe,
 	.remove = rt5670_remove,
 	.suspend = rt5670_suspend,

sound/soc/codecs/rt5677.c

@@ -4968,7 +4968,7 @@ static struct snd_soc_dai_driver rt5677_dai[] = {
 	},
 };
 
-static struct snd_soc_codec_driver soc_codec_dev_rt5677 = {
+static const struct snd_soc_codec_driver soc_codec_dev_rt5677 = {
 	.probe = rt5677_probe,
 	.remove = rt5677_remove,
 	.suspend = rt5677_suspend,

sound/soc/codecs/sgtl5000.c

@@ -1248,7 +1248,7 @@ static int sgtl5000_remove(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver sgtl5000_driver = {
+static const struct snd_soc_codec_driver sgtl5000_driver = {
 	.probe = sgtl5000_probe,
 	.remove = sgtl5000_remove,
 	.set_bias_level = sgtl5000_set_bias_level,

sound/soc/codecs/si476x.c

@@ -236,7 +236,7 @@ static struct regmap *si476x_get_regmap(struct device *dev)
 	return dev_get_regmap(dev->parent, NULL);
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_si476x = {
+static const struct snd_soc_codec_driver soc_codec_dev_si476x = {
 	.get_regmap = si476x_get_regmap,
 	.component_driver = {
 		.dapm_widgets		= si476x_dapm_widgets,

sound/soc/codecs/sirf-audio-codec.c

@@ -429,7 +429,7 @@ static int sirf_audio_codec_remove(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver soc_codec_device_sirf_audio_codec = {
+static const struct snd_soc_codec_driver soc_codec_device_sirf_audio_codec = {
 	.probe = sirf_audio_codec_probe,
 	.remove = sirf_audio_codec_remove,
 	.dapm_widgets = sirf_audio_codec_dapm_widgets,

sound/soc/codecs/sn95031.c

@@ -883,7 +883,7 @@ static int sn95031_codec_probe(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static struct snd_soc_codec_driver sn95031_codec = {
+static const struct snd_soc_codec_driver sn95031_codec = {
 	.probe		= sn95031_codec_probe,
 	.set_bias_level	= sn95031_set_vaud_bias,
 	.idle_bias_off	= true,

sound/soc/codecs/spdif_receiver.c

@@ -37,7 +37,7 @@ static const struct snd_soc_dapm_route dir_routes[] = {
 			SNDRV_PCM_FMTBIT_S24_LE | \
 			SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
 
-static struct snd_soc_codec_driver soc_codec_spdif_dir = {
+static const struct snd_soc_codec_driver soc_codec_spdif_dir = {
 	.component_driver = {
 		.dapm_widgets		= dir_widgets,
 		.num_dapm_widgets	= ARRAY_SIZE(dir_widgets),

sound/soc/codecs/spdif_transmitter.c

@@ -37,7 +37,7 @@ static const struct snd_soc_dapm_route dit_routes[] = {
 	{ "spdif-out", NULL, "Playback" },
 };
 
-static struct snd_soc_codec_driver soc_codec_spdif_dit = {
+static const struct snd_soc_codec_driver soc_codec_spdif_dit = {
 	.component_driver = {
 		.dapm_widgets		= dit_widgets,
 		.num_dapm_widgets	= ARRAY_SIZE(dit_widgets),

sound/soc/codecs/ssm2518.c

@@ -710,7 +710,7 @@ static int ssm2518_set_sysclk(struct snd_soc_codec *codec, int clk_id,
 			SSM2518_POWER1_NO_BCLK, val);
 }
 
-static struct snd_soc_codec_driver ssm2518_codec_driver = {
+static const struct snd_soc_codec_driver ssm2518_codec_driver = {
 	.set_bias_level = ssm2518_set_bias_level,
 	.set_sysclk = ssm2518_set_sysclk,
 	.idle_bias_off = true,

sound/soc/codecs/ssm2602.c

@@ -591,7 +591,7 @@ static int ssm260x_codec_probe(struct snd_soc_codec *codec)
 	return ret;
 }
 
-static struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
+static const struct snd_soc_codec_driver soc_codec_dev_ssm2602 = {
 	.probe =	ssm260x_codec_probe,
 	.resume =	ssm2602_resume,
 	.set_bias_level = ssm2602_set_bias_level,