Applied "ASoC: rk3036: Inno codec driver for RK3036 SoC" to the asoc tree

Message ID E1a0sG8-0007WF-De@debutante
State New
Headers show

Commit Message

Mark Brown Nov. 23, 2015, 2:38 p.m.
The patch

   ASoC: rk3036: Inno codec driver for RK3036 SoC

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

From decbc00eb889d199edad737630fa882c0308d0ae Mon Sep 17 00:00:00 2001
From: ZhengShunQian <zhengsq@rock-chips.com>

Date: Mon, 9 Nov 2015 10:10:19 +0800
Subject: [PATCH] ASoC: rk3036: Inno codec driver for RK3036 SoC

RK3036 SoC integrated with an Inno audio codec.
This driver implements the functions of it.

There is not need a special machine driver, since the
simple-card machine driver works perfect in this case.

Signed-off-by: ZhengShunQian <zhengsq@rock-chips.com>

Signed-off-by: Mark Brown <broonie@kernel.org>

---
 sound/soc/codecs/Kconfig       |   4 +
 sound/soc/codecs/Makefile      |   2 +
 sound/soc/codecs/inno_rk3036.c | 491 +++++++++++++++++++++++++++++++++++++++++
 sound/soc/codecs/inno_rk3036.h | 123 +++++++++++
 4 files changed, 620 insertions(+)
 create mode 100644 sound/soc/codecs/inno_rk3036.c
 create mode 100644 sound/soc/codecs/inno_rk3036.h

-- 
2.6.2

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Patch

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index cfdafc4c11ea..89d789e3a2d0 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -67,6 +67,7 @@  config SND_SOC_ALL_CODECS
 	select SND_SOC_ES8328_I2C if I2C
 	select SND_SOC_GTM601
 	select SND_SOC_ICS43432
+	select SND_SOC_INNO_RK3036
 	select SND_SOC_ISABELLE if I2C
 	select SND_SOC_JZ4740_CODEC
 	select SND_SOC_LM4857 if I2C
@@ -471,6 +472,9 @@  config SND_SOC_GTM601
 config SND_SOC_ICS43432
 	tristate
 
+config SND_SOC_INNO_RK3036
+	tristate "Inno codec driver for RK3036 SoC"
+
 config SND_SOC_ISABELLE
         tristate
 
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index f632fc42f59f..2f6bc6c01178 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -60,6 +60,7 @@  snd-soc-es8328-i2c-objs := es8328-i2c.o
 snd-soc-es8328-spi-objs := es8328-spi.o
 snd-soc-gtm601-objs := gtm601.o
 snd-soc-ics43432-objs := ics43432.o
+snd-soc-inno-rk3036-objs := inno_rk3036.o
 snd-soc-isabelle-objs := isabelle.o
 snd-soc-jz4740-codec-objs := jz4740.o
 snd-soc-l3-objs := l3.o
@@ -255,6 +256,7 @@  obj-$(CONFIG_SND_SOC_ES8328_I2C)+= snd-soc-es8328-i2c.o
 obj-$(CONFIG_SND_SOC_ES8328_SPI)+= snd-soc-es8328-spi.o
 obj-$(CONFIG_SND_SOC_GTM601)    += snd-soc-gtm601.o
 obj-$(CONFIG_SND_SOC_ICS43432)	+= snd-soc-ics43432.o
+obj-$(CONFIG_SND_SOC_INNO_RK3036)	+= snd-soc-inno-rk3036.o
 obj-$(CONFIG_SND_SOC_ISABELLE)	+= snd-soc-isabelle.o
 obj-$(CONFIG_SND_SOC_JZ4740_CODEC)	+= snd-soc-jz4740-codec.o
 obj-$(CONFIG_SND_SOC_L3)	+= snd-soc-l3.o
diff --git a/sound/soc/codecs/inno_rk3036.c b/sound/soc/codecs/inno_rk3036.c
new file mode 100644
index 000000000000..24677a831c00
--- /dev/null
+++ b/sound/soc/codecs/inno_rk3036.c
@@ -0,0 +1,491 @@ 
+/*
+ * Driver of Inno codec for rk3036 by Rockchip Inc.
+ *
+ * Author: Rockchip Inc.
+ * Author: Zheng ShunQian<zhengsq@rock-chips.com>
+ */
+
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/soc-dapm.h>
+#include <sound/soc-dai.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/clk.h>
+#include <linux/regmap.h>
+#include <linux/device.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/io.h>
+
+#include "inno_rk3036.h"
+
+struct rk3036_codec_priv {
+	void __iomem *base;
+	struct clk *pclk;
+	struct regmap *regmap;
+	struct device *dev;
+};
+
+static const DECLARE_TLV_DB_MINMAX(rk3036_codec_hp_tlv, -39, 0);
+
+static int rk3036_codec_antipop_info(struct snd_kcontrol *kcontrol,
+				     struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = 2;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+
+	return 0;
+}
+
+static int rk3036_codec_antipop_get(struct snd_kcontrol *kcontrol,
+				    struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	int val, ret, regval;
+
+	ret = snd_soc_component_read(component, INNO_R09, &regval);
+	if (ret)
+		return ret;
+	val = ((regval >> INNO_R09_HPL_ANITPOP_SHIFT) &
+	       INNO_R09_HP_ANTIPOP_MSK) == INNO_R09_HP_ANTIPOP_ON;
+	ucontrol->value.integer.value[0] = val;
+
+	val = ((regval >> INNO_R09_HPR_ANITPOP_SHIFT) &
+	       INNO_R09_HP_ANTIPOP_MSK) == INNO_R09_HP_ANTIPOP_ON;
+	ucontrol->value.integer.value[1] = val;
+
+	return 0;
+}
+
+static int rk3036_codec_antipop_put(struct snd_kcontrol *kcontrol,
+				    struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	int val, ret, regmsk;
+
+	val = (ucontrol->value.integer.value[0] ?
+	       INNO_R09_HP_ANTIPOP_ON : INNO_R09_HP_ANTIPOP_OFF) <<
+	      INNO_R09_HPL_ANITPOP_SHIFT;
+	val |= (ucontrol->value.integer.value[1] ?
+		INNO_R09_HP_ANTIPOP_ON : INNO_R09_HP_ANTIPOP_OFF) <<
+	       INNO_R09_HPR_ANITPOP_SHIFT;
+
+	regmsk = INNO_R09_HP_ANTIPOP_MSK << INNO_R09_HPL_ANITPOP_SHIFT |
+		 INNO_R09_HP_ANTIPOP_MSK << INNO_R09_HPR_ANITPOP_SHIFT;
+
+	ret = snd_soc_component_update_bits(component, INNO_R09,
+					    regmsk, val);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+#define SOC_RK3036_CODEC_ANTIPOP_DECL(xname) \
+{	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+	.info = rk3036_codec_antipop_info, .get = rk3036_codec_antipop_get, \
+	.put = rk3036_codec_antipop_put, }
+
+static const struct snd_kcontrol_new rk3036_codec_dapm_controls[] = {
+	SOC_DOUBLE_R_RANGE_TLV("Headphone Volume", INNO_R07, INNO_R08,
+		INNO_HP_GAIN_SHIFT, INNO_HP_GAIN_N39DB,
+		INNO_HP_GAIN_0DB, 0, rk3036_codec_hp_tlv),
+	SOC_DOUBLE("Zero Cross Switch", INNO_R06, INNO_R06_VOUTL_CZ_SHIFT,
+		INNO_R06_VOUTR_CZ_SHIFT, 1, 0),
+	SOC_DOUBLE("Headphone Switch", INNO_R09, INNO_R09_HPL_MUTE_SHIFT,
+		INNO_R09_HPR_MUTE_SHIFT, 1, 0),
+	SOC_RK3036_CODEC_ANTIPOP_DECL("Anti-pop Switch"),
+};
+
+static const struct snd_kcontrol_new rk3036_codec_hpl_mixer_controls[] = {
+	SOC_DAPM_SINGLE("DAC Left Out Switch", INNO_R09,
+			INNO_R09_DACL_SWITCH_SHIFT, 1, 0),
+};
+
+static const struct snd_kcontrol_new rk3036_codec_hpr_mixer_controls[] = {
+	SOC_DAPM_SINGLE("DAC Right Out Switch", INNO_R09,
+			INNO_R09_DACR_SWITCH_SHIFT, 1, 0),
+};
+
+static const struct snd_kcontrol_new rk3036_codec_hpl_switch_controls[] = {
+	SOC_DAPM_SINGLE("HP Left Out Switch", INNO_R05,
+			INNO_R05_HPL_WORK_SHIFT, 1, 0),
+};
+
+static const struct snd_kcontrol_new rk3036_codec_hpr_switch_controls[] = {
+	SOC_DAPM_SINGLE("HP Right Out Switch", INNO_R05,
+			INNO_R05_HPR_WORK_SHIFT, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget rk3036_codec_dapm_widgets[] = {
+	SND_SOC_DAPM_SUPPLY_S("DAC PWR", 1, INNO_R06,
+			      INNO_R06_DAC_EN_SHIFT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("DACL VREF", 2, INNO_R04,
+			      INNO_R04_DACL_VREF_SHIFT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("DACR VREF", 2, INNO_R04,
+			      INNO_R04_DACR_VREF_SHIFT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("DACL HiLo VREF", 3, INNO_R06,
+			      INNO_R06_DACL_HILO_VREF_SHIFT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("DACR HiLo VREF", 3, INNO_R06,
+			      INNO_R06_DACR_HILO_VREF_SHIFT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("DACR CLK", 3, INNO_R04,
+			      INNO_R04_DACR_CLK_SHIFT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY_S("DACL CLK", 3, INNO_R04,
+			      INNO_R04_DACL_CLK_SHIFT, 0, NULL, 0),
+
+	SND_SOC_DAPM_DAC("DACL", "Left Playback", INNO_R04,
+			 INNO_R04_DACL_SW_SHIFT, 0),
+	SND_SOC_DAPM_DAC("DACR", "Right Playback", INNO_R04,
+			 INNO_R04_DACR_SW_SHIFT, 0),
+
+	SND_SOC_DAPM_MIXER("Left Headphone Mixer", SND_SOC_NOPM, 0, 0,
+		rk3036_codec_hpl_mixer_controls,
+		ARRAY_SIZE(rk3036_codec_hpl_mixer_controls)),
+	SND_SOC_DAPM_MIXER("Right Headphone Mixer", SND_SOC_NOPM, 0, 0,
+		rk3036_codec_hpr_mixer_controls,
+		ARRAY_SIZE(rk3036_codec_hpr_mixer_controls)),
+
+	SND_SOC_DAPM_PGA("HP Left Out", INNO_R05,
+			 INNO_R05_HPL_EN_SHIFT, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("HP Right Out", INNO_R05,
+			 INNO_R05_HPR_EN_SHIFT, 0, NULL, 0),
+
+	SND_SOC_DAPM_MIXER("HP Left Switch",  SND_SOC_NOPM, 0, 0,
+			   rk3036_codec_hpl_switch_controls,
+			   ARRAY_SIZE(rk3036_codec_hpl_switch_controls)),
+	SND_SOC_DAPM_MIXER("HP Right Switch",  SND_SOC_NOPM, 0, 0,
+			   rk3036_codec_hpr_switch_controls,
+			   ARRAY_SIZE(rk3036_codec_hpr_switch_controls)),
+
+	SND_SOC_DAPM_OUTPUT("HPL"),
+	SND_SOC_DAPM_OUTPUT("HPR"),
+};
+
+static const struct snd_soc_dapm_route rk3036_codec_dapm_routes[] = {
+	{"DACL VREF", NULL, "DAC PWR"},
+	{"DACR VREF", NULL, "DAC PWR"},
+	{"DACL HiLo VREF", NULL, "DAC PWR"},
+	{"DACR HiLo VREF", NULL, "DAC PWR"},
+	{"DACL CLK", NULL, "DAC PWR"},
+	{"DACR CLK", NULL, "DAC PWR"},
+
+	{"DACL", NULL, "DACL VREF"},
+	{"DACL", NULL, "DACL HiLo VREF"},
+	{"DACL", NULL, "DACL CLK"},
+	{"DACR", NULL, "DACR VREF"},
+	{"DACR", NULL, "DACR HiLo VREF"},
+	{"DACR", NULL, "DACR CLK"},
+
+	{"Left Headphone Mixer", "DAC Left Out Switch", "DACL"},
+	{"Right Headphone Mixer", "DAC Right Out Switch", "DACR"},
+	{"HP Left Out", NULL, "Left Headphone Mixer"},
+	{"HP Right Out", NULL, "Right Headphone Mixer"},
+
+	{"HP Left Switch", "HP Left Out Switch", "HP Left Out"},
+	{"HP Right Switch", "HP Right Out Switch", "HP Right Out"},
+
+	{"HPL", NULL, "HP Left Switch"},
+	{"HPR", NULL, "HP Right Switch"},
+};
+
+static int rk3036_codec_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	unsigned int reg01_val = 0,  reg02_val = 0, reg03_val = 0;
+
+	dev_dbg(codec->dev, "rk3036_codec dai set fmt : %08x\n", fmt);
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBS_CFS:
+		reg01_val |= INNO_R01_PINDIR_IN_SLAVE |
+			     INNO_R01_I2SMODE_SLAVE;
+		break;
+	case SND_SOC_DAIFMT_CBM_CFM:
+		reg01_val |= INNO_R01_PINDIR_OUT_MASTER |
+			     INNO_R01_I2SMODE_MASTER;
+		break;
+	default:
+		dev_err(codec->dev, "invalid fmt\n");
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_DSP_A:
+		reg02_val |= INNO_R02_DACM_PCM;
+		break;
+	case SND_SOC_DAIFMT_I2S:
+		reg02_val |= INNO_R02_DACM_I2S;
+		break;
+	case SND_SOC_DAIFMT_RIGHT_J:
+		reg02_val |= INNO_R02_DACM_RJM;
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		reg02_val |= INNO_R02_DACM_LJM;
+		break;
+	default:
+		dev_err(codec->dev, "set dai format failed\n");
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		reg02_val |= INNO_R02_LRCP_NORMAL;
+		reg03_val |= INNO_R03_BCP_NORMAL;
+		break;
+	case SND_SOC_DAIFMT_IB_IF:
+		reg02_val |= INNO_R02_LRCP_REVERSAL;
+		reg03_val |= INNO_R03_BCP_REVERSAL;
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		reg02_val |= INNO_R02_LRCP_REVERSAL;
+		reg03_val |= INNO_R03_BCP_NORMAL;
+		break;
+	case SND_SOC_DAIFMT_NB_IF:
+		reg02_val |= INNO_R02_LRCP_NORMAL;
+		reg03_val |= INNO_R03_BCP_REVERSAL;
+		break;
+	default:
+		dev_err(codec->dev, "set dai format failed\n");
+		return -EINVAL;
+	}
+
+	snd_soc_update_bits(codec, INNO_R01, INNO_R01_I2SMODE_MSK |
+			    INNO_R01_PINDIR_MSK, reg01_val);
+	snd_soc_update_bits(codec, INNO_R02, INNO_R02_LRCP_MSK |
+			    INNO_R02_DACM_MSK, reg02_val);
+	snd_soc_update_bits(codec, INNO_R03, INNO_R03_BCP_MSK, reg03_val);
+
+	return 0;
+}
+
+static int rk3036_codec_dai_hw_params(struct snd_pcm_substream *substream,
+				      struct snd_pcm_hw_params *hw_params,
+				      struct snd_soc_dai *dai)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	unsigned int reg02_val = 0, reg03_val = 0;
+
+	switch (params_format(hw_params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		reg02_val |= INNO_R02_VWL_16BIT;
+		break;
+	case SNDRV_PCM_FORMAT_S20_3LE:
+		reg02_val |= INNO_R02_VWL_20BIT;
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		reg02_val |= INNO_R02_VWL_24BIT;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		reg02_val |= INNO_R02_VWL_32BIT;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	reg02_val |= INNO_R02_LRCP_NORMAL;
+	reg03_val |= INNO_R03_FWL_32BIT | INNO_R03_DACR_WORK;
+
+	snd_soc_update_bits(codec, INNO_R02, INNO_R02_LRCP_MSK |
+			    INNO_R02_VWL_MSK, reg02_val);
+	snd_soc_update_bits(codec, INNO_R03, INNO_R03_DACR_MSK |
+			    INNO_R03_FWL_MSK, reg03_val);
+	return 0;
+}
+
+#define RK3036_CODEC_RATES (SNDRV_PCM_RATE_8000  | \
+			    SNDRV_PCM_RATE_16000 | \
+			    SNDRV_PCM_RATE_32000 | \
+			    SNDRV_PCM_RATE_44100 | \
+			    SNDRV_PCM_RATE_48000 | \
+			    SNDRV_PCM_RATE_96000)
+
+#define RK3036_CODEC_FMTS (SNDRV_PCM_FMTBIT_S16_LE  | \
+			   SNDRV_PCM_FMTBIT_S20_3LE | \
+			   SNDRV_PCM_FMTBIT_S24_LE  | \
+			   SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_ops rk3036_codec_dai_ops = {
+	.set_fmt	= rk3036_codec_dai_set_fmt,
+	.hw_params	= rk3036_codec_dai_hw_params,
+};
+
+static struct snd_soc_dai_driver rk3036_codec_dai_driver[] = {
+	{
+		.name = "rk3036-codec-dai",
+		.playback = {
+			.stream_name = "Playback",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RK3036_CODEC_RATES,
+			.formats = RK3036_CODEC_FMTS,
+		},
+		.ops = &rk3036_codec_dai_ops,
+		.symmetric_rates = 1,
+	},
+};
+
+static void rk3036_codec_reset(struct snd_soc_codec *codec)
+{
+	snd_soc_write(codec, INNO_R00,
+		      INNO_R00_CSR_RESET | INNO_R00_CDCR_RESET);
+	snd_soc_write(codec, INNO_R00,
+		      INNO_R00_CSR_WORK | INNO_R00_CDCR_WORK);
+}
+
+static int rk3036_codec_probe(struct snd_soc_codec *codec)
+{
+	rk3036_codec_reset(codec);
+	return 0;
+}
+
+static int rk3036_codec_remove(struct snd_soc_codec *codec)
+{
+	rk3036_codec_reset(codec);
+	return 0;
+}
+
+static int rk3036_codec_set_bias_level(struct snd_soc_codec *codec,
+				       enum snd_soc_bias_level level)
+{
+	switch (level) {
+	case SND_SOC_BIAS_STANDBY:
+		/* set a big current for capacitor charging. */
+		snd_soc_write(codec, INNO_R10, INNO_R10_MAX_CUR);
+		/* start precharge */
+		snd_soc_write(codec, INNO_R06, INNO_R06_DAC_PRECHARGE);
+
+		break;
+
+	case SND_SOC_BIAS_OFF:
+		/* set a big current for capacitor discharging. */
+		snd_soc_write(codec, INNO_R10, INNO_R10_MAX_CUR);
+		/* start discharge. */
+		snd_soc_write(codec, INNO_R06, INNO_R06_DAC_DISCHARGE);
+
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static struct snd_soc_codec_driver rk3036_codec_driver = {
+	.probe			= rk3036_codec_probe,
+	.remove			= rk3036_codec_remove,
+	.set_bias_level		= rk3036_codec_set_bias_level,
+	.controls		= rk3036_codec_dapm_controls,
+	.num_controls		= ARRAY_SIZE(rk3036_codec_dapm_controls),
+	.dapm_routes		= rk3036_codec_dapm_routes,
+	.num_dapm_routes	= ARRAY_SIZE(rk3036_codec_dapm_routes),
+	.dapm_widgets		= rk3036_codec_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(rk3036_codec_dapm_widgets),
+};
+
+static const struct regmap_config rk3036_codec_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+};
+
+#define GRF_SOC_CON0		0x00140
+#define GRF_ACODEC_SEL		(BIT(10) | BIT(16 + 10))
+
+static int rk3036_codec_platform_probe(struct platform_device *pdev)
+{
+	struct rk3036_codec_priv *priv;
+	struct device_node *of_node = pdev->dev.of_node;
+	struct resource *res;
+	void __iomem *base;
+	struct regmap *grf;
+	int ret;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	priv->base = base;
+	priv->regmap = devm_regmap_init_mmio(&pdev->dev, priv->base,
+					     &rk3036_codec_regmap_config);
+	if (IS_ERR(priv->regmap)) {
+		dev_err(&pdev->dev, "init regmap failed\n");
+		return PTR_ERR(priv->regmap);
+	}
+
+	grf = syscon_regmap_lookup_by_phandle(of_node, "rockchip,grf");
+	if (IS_ERR(grf)) {
+		dev_err(&pdev->dev, "needs 'rockchip,grf' property\n");
+		return PTR_ERR(grf);
+	}
+	ret = regmap_write(grf, GRF_SOC_CON0, GRF_ACODEC_SEL);
+	if (ret) {
+		dev_err(&pdev->dev, "Could not write to GRF: %d\n", ret);
+		return ret;
+	}
+
+	priv->pclk = devm_clk_get(&pdev->dev, "acodec_pclk");
+	if (IS_ERR(priv->pclk))
+		return PTR_ERR(priv->pclk);
+
+	ret = clk_prepare_enable(priv->pclk);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to enable clk\n");
+		return ret;
+	}
+
+	priv->dev = &pdev->dev;
+	dev_set_drvdata(&pdev->dev, priv);
+
+	ret = snd_soc_register_codec(&pdev->dev, &rk3036_codec_driver,
+				     rk3036_codec_dai_driver,
+				     ARRAY_SIZE(rk3036_codec_dai_driver));
+	if (ret) {
+		clk_disable_unprepare(priv->pclk);
+		dev_set_drvdata(&pdev->dev, NULL);
+	}
+
+	return ret;
+}
+
+static int rk3036_codec_platform_remove(struct platform_device *pdev)
+{
+	struct rk3036_codec_priv *priv = dev_get_drvdata(&pdev->dev);
+
+	snd_soc_unregister_codec(&pdev->dev);
+	clk_disable_unprepare(priv->pclk);
+
+	return 0;
+}
+
+static const struct of_device_id rk3036_codec_of_match[] = {
+	{ .compatible = "rockchip,rk3036-codec", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, rk3036_codec_of_match);
+
+static struct platform_driver rk3036_codec_platform_driver = {
+	.driver = {
+		.name = "rk3036-codec-platform",
+		.owner = THIS_MODULE,
+		.of_match_table = of_match_ptr(rk3036_codec_of_match),
+	},
+	.probe = rk3036_codec_platform_probe,
+	.remove = rk3036_codec_platform_remove,
+};
+
+module_platform_driver(rk3036_codec_platform_driver);
+
+MODULE_AUTHOR("Rockchip Inc.");
+MODULE_DESCRIPTION("Rockchip rk3036 codec driver");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/inno_rk3036.h b/sound/soc/codecs/inno_rk3036.h
new file mode 100644
index 000000000000..da759c6c7501
--- /dev/null
+++ b/sound/soc/codecs/inno_rk3036.h
@@ -0,0 +1,123 @@ 
+/*
+ * Driver of Inno Codec for rk3036 by Rockchip Inc.
+ *
+ * Author: Zheng ShunQian<zhengsq@rock-chips.com>
+ */
+
+#ifndef _INNO_RK3036_CODEC_H
+#define _INNO_RK3036_CODEC_H
+
+/* codec registers */
+#define INNO_R00	0x00
+#define INNO_R01	0x0c
+#define INNO_R02	0x10
+#define INNO_R03	0x14
+#define INNO_R04	0x88
+#define INNO_R05	0x8c
+#define INNO_R06	0x90
+#define INNO_R07	0x94
+#define INNO_R08	0x98
+#define INNO_R09	0x9c
+#define INNO_R10	0xa0
+
+/* register bit filed */
+#define INNO_R00_CSR_RESET		(0x0 << 0) /*codec system reset*/
+#define INNO_R00_CSR_WORK		(0x1 << 0)
+#define INNO_R00_CDCR_RESET		(0x0 << 1) /*codec digital core reset*/
+#define INNO_R00_CDCR_WORK		(0x1 << 1)
+#define INNO_R00_PRB_DISABLE		(0x0 << 6) /*power reset bypass*/
+#define INNO_R00_PRB_ENABLE		(0x1 << 6)
+
+#define INNO_R01_I2SMODE_MSK		(0x1 << 4)
+#define INNO_R01_I2SMODE_SLAVE		(0x0 << 4)
+#define INNO_R01_I2SMODE_MASTER		(0x1 << 4)
+#define INNO_R01_PINDIR_MSK		(0x1 << 5)
+#define INNO_R01_PINDIR_IN_SLAVE	(0x0 << 5) /*direction of pin*/
+#define INNO_R01_PINDIR_OUT_MASTER	(0x1 << 5)
+
+#define INNO_R02_LRS_MSK		(0x1 << 2)
+#define INNO_R02_LRS_NORMAL		(0x0 << 2) /*DAC Left Right Swap*/
+#define INNO_R02_LRS_SWAP		(0x1 << 2)
+#define INNO_R02_DACM_MSK		(0x3 << 3)
+#define INNO_R02_DACM_PCM		(0x3 << 3) /*DAC Mode*/
+#define INNO_R02_DACM_I2S		(0x2 << 3)
+#define INNO_R02_DACM_LJM		(0x1 << 3)
+#define INNO_R02_DACM_RJM		(0x0 << 3)
+#define INNO_R02_VWL_MSK		(0x3 << 5)
+#define INNO_R02_VWL_32BIT		(0x3 << 5) /*1/2Frame Valid Word Len*/
+#define INNO_R02_VWL_24BIT		(0x2 << 5)
+#define INNO_R02_VWL_20BIT		(0x1 << 5)
+#define INNO_R02_VWL_16BIT		(0x0 << 5)
+#define INNO_R02_LRCP_MSK		(0x1 << 7)
+#define INNO_R02_LRCP_NORMAL		(0x0 << 7) /*Left Right Polarity*/
+#define INNO_R02_LRCP_REVERSAL		(0x1 << 7)
+
+#define INNO_R03_BCP_MSK		(0x1 << 0)
+#define INNO_R03_BCP_NORMAL		(0x0 << 0) /*DAC bit clock polarity*/
+#define INNO_R03_BCP_REVERSAL		(0x1 << 0)
+#define INNO_R03_DACR_MSK		(0x1 << 1)
+#define INNO_R03_DACR_RESET		(0x0 << 1) /*DAC Reset*/
+#define INNO_R03_DACR_WORK		(0x1 << 1)
+#define INNO_R03_FWL_MSK		(0x3 << 2)
+#define INNO_R03_FWL_32BIT		(0x3 << 2) /*1/2Frame Word Length*/
+#define INNO_R03_FWL_24BIT		(0x2 << 2)
+#define INNO_R03_FWL_20BIT		(0x1 << 2)
+#define INNO_R03_FWL_16BIT		(0x0 << 2)
+
+#define INNO_R04_DACR_SW_SHIFT		0
+#define INNO_R04_DACL_SW_SHIFT		1
+#define INNO_R04_DACR_CLK_SHIFT		2
+#define INNO_R04_DACL_CLK_SHIFT		3
+#define INNO_R04_DACR_VREF_SHIFT	4
+#define INNO_R04_DACL_VREF_SHIFT	5
+
+#define INNO_R05_HPR_EN_SHIFT		0
+#define INNO_R05_HPL_EN_SHIFT		1
+#define INNO_R05_HPR_WORK_SHIFT		2
+#define INNO_R05_HPL_WORK_SHIFT		3
+
+#define INNO_R06_VOUTR_CZ_SHIFT		0
+#define INNO_R06_VOUTL_CZ_SHIFT		1
+#define INNO_R06_DACR_HILO_VREF_SHIFT	2
+#define INNO_R06_DACL_HILO_VREF_SHIFT	3
+#define INNO_R06_DAC_EN_SHIFT		5
+
+#define INNO_R06_DAC_PRECHARGE		(0x0 << 4) /*PreCharge control for DAC*/
+#define INNO_R06_DAC_DISCHARGE		(0x1 << 4)
+
+#define INNO_HP_GAIN_SHIFT		0
+/* Gain of output, 1.5db step: -39db(0x0) ~ 0db(0x1a) ~ 6db(0x1f) */
+#define INNO_HP_GAIN_0DB		0x1a
+#define INNO_HP_GAIN_N39DB		0x0
+
+#define INNO_R09_HP_ANTIPOP_MSK		0x3
+#define INNO_R09_HP_ANTIPOP_OFF		0x1
+#define INNO_R09_HP_ANTIPOP_ON		0x2
+#define INNO_R09_HPR_ANITPOP_SHIFT	0
+#define INNO_R09_HPL_ANITPOP_SHIFT	2
+#define INNO_R09_HPR_MUTE_SHIFT		4
+#define INNO_R09_HPL_MUTE_SHIFT		5
+#define INNO_R09_DACR_SWITCH_SHIFT	6
+#define INNO_R09_DACL_SWITCH_SHIFT	7
+
+#define INNO_R10_CHARGE_SEL_CUR_400I_YES	(0x0 << 0)
+#define INNO_R10_CHARGE_SEL_CUR_400I_NO		(0x1 << 0)
+#define INNO_R10_CHARGE_SEL_CUR_260I_YES	(0x0 << 1)
+#define INNO_R10_CHARGE_SEL_CUR_260I_NO		(0x1 << 1)
+#define INNO_R10_CHARGE_SEL_CUR_130I_YES	(0x0 << 2)
+#define INNO_R10_CHARGE_SEL_CUR_130I_NO		(0x1 << 2)
+#define INNO_R10_CHARGE_SEL_CUR_100I_YES	(0x0 << 3)
+#define INNO_R10_CHARGE_SEL_CUR_100I_NO		(0x1 << 3)
+#define INNO_R10_CHARGE_SEL_CUR_050I_YES	(0x0 << 4)
+#define INNO_R10_CHARGE_SEL_CUR_050I_NO		(0x1 << 4)
+#define INNO_R10_CHARGE_SEL_CUR_027I_YES	(0x0 << 5)
+#define INNO_R10_CHARGE_SEL_CUR_027I_NO		(0x1 << 5)
+
+#define INNO_R10_MAX_CUR (INNO_R10_CHARGE_SEL_CUR_400I_YES | \
+			  INNO_R10_CHARGE_SEL_CUR_260I_YES | \
+			  INNO_R10_CHARGE_SEL_CUR_130I_YES | \
+			  INNO_R10_CHARGE_SEL_CUR_100I_YES | \
+			  INNO_R10_CHARGE_SEL_CUR_050I_YES | \
+			  INNO_R10_CHARGE_SEL_CUR_027I_YES)
+
+#endif