[PATCH v4 1/2] ASoC: codec: Inno codec driver for RK3036 SoC

From: Shunqian Zheng
Date: Sun Nov 08 2015 - 21:11:38 EST

From: ZhengShunQian <zhengsq@xxxxxxxxxxxxxx>

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@xxxxxxxxxxxxxx>
---
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

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 0c9733e..2de6cbc 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -65,6 +65,7 @@ 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
@@ -462,6 +463,9 @@ 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 4a32077..c321489 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -58,6 +58,7 @@ 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
@@ -250,6 +251,7 @@ 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 0000000..24677a8
--- /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@xxxxxxxxxxxxxx>
+ */
+
+#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 0000000..da759c6
--- /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@xxxxxxxxxxxxxx>
+ */
+
+#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
--
1.9.1

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