Re: [PATCH v2 1/2] ASoC: codec: Inno codec driver for RK3036 SoC

[Shunqian Zheng <zhengsq@rock-chips.com>]

LABBE,


On 2015年11月05日 20:47, LABBE Corentin wrote:
> On Thu, Nov 05, 2015 at 05:53:13PM +0800, Shunqian Zheng wrote:
>> From: ZhengShunQian <zhengsq@rock-chips.com>
>>
>> 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>
>> ---
>>   sound/soc/codecs/Kconfig       |   4 +
>>   sound/soc/codecs/Makefile      |   2 +
>>   sound/soc/codecs/inno_rk3036.c | 455 +++++++++++++++++++++++++++++++++++++++++
>>   sound/soc/codecs/inno_rk3036.h | 120 +++++++++++
>>   4 files changed, 581 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 cfdafc4..89d789e 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 f632fc4..2f6bc6c 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 0000000..ce68f02
>> --- /dev/null
>> +++ b/sound/soc/codecs/inno_rk3036.c
>> @@ -0,0 +1,455 @@
>> +/*
>> + * 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/delay.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 const char *rk3036_codec_antipop_text[] = {"none", "work"};
>> +static const unsigned int rk3036_codec_antipop_values[] = {0x1, 0x2};
>> +
>> +static SOC_VALUE_ENUM_DOUBLE_DECL(rk3036_codec_antipop_enum, INNO_R09,
>> +		INNO_R09_HPL_ANITPOP_SHIFT, INNO_R09_HPR_ANITPOP_SHIFT, 0x3,
>> +		rk3036_codec_antipop_text, rk3036_codec_antipop_values);
>> +
>> +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 Detect", INNO_R06, INNO_R06_VOUTL_CZ_SHIFT,
>> +		INNO_R06_VOUTR_CZ_SHIFT, 1, 0),
>> +	SOC_DOUBLE("HP Mute", INNO_R09, INNO_R09_HPL_MUTE_SHIFT,
>> +		INNO_R09_HPR_MUTE_SHIFT, 1, 1),
>> +	SOC_ENUM("Anti-pop", rk3036_codec_antipop_enum),
>> +};
>> +
>> +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)
>> +
>> +struct snd_soc_dai_ops rk3036_codec_dai_ops = {
>> +	.set_fmt	= rk3036_codec_dai_set_fmt,
>> +	.hw_params	= rk3036_codec_dai_hw_params,
>> +};
>> +
>> +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,
>> +	},
>> +};
> You could set it as const, since snd_soc_register_codec() expect it.
>
>> +
>> +static void rk3036_codec_reset(struct snd_soc_codec *codec)
>> +{
>> +	snd_soc_write(codec, INNO_R00,
>> +		      INNO_R00_CSR_RESET | INNO_R00_CDCR_RESET);
>> +	mdelay(10);
>> +	snd_soc_write(codec, INNO_R00,
>> +		      INNO_R00_CSR_WORK | INNO_R00_CDCR_WORK);
>> +	mdelay(10);
> Why 10 ? Does it is a datasheet given value , or a try and test value ?
Datasheet didn't have a delay value, while I though it would be better 
to delay.
Actually, even remove mdelay(10), it just work.

I would delete them in V3.
>
>> +}
>> +
>> +static int rk3036_codec_add_widgets(struct snd_soc_codec *codec)
>> +{
>> +	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
>> +
>> +	snd_soc_add_codec_controls(codec, rk3036_codec_dapm_controls,
>> +		ARRAY_SIZE(rk3036_codec_dapm_controls));
>> +
>> +	snd_soc_dapm_new_controls(dapm, rk3036_codec_dapm_widgets,
>> +		ARRAY_SIZE(rk3036_codec_dapm_widgets));
>> +
>> +	snd_soc_dapm_add_routes(dapm, rk3036_codec_dapm_routes,
>> +		ARRAY_SIZE(rk3036_codec_dapm_routes));
>> +
>> +	return 0;
>> +}
>> +
>> +static int rk3036_codec_probe(struct snd_soc_codec *codec)
>> +{
>> +	rk3036_codec_reset(codec);
>> +
>> +	rk3036_codec_add_widgets(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,
>> +};
> You could set it as const, since snd_soc_register_codec() expect it.
It seems no,
int snd_soc_register_codec(struct device *dev,
                            const struct snd_soc_codec_driver *codec_drv,
                            struct snd_soc_dai_driver *dai_drv,
                            int num_dai)

>
>> +
>> +static struct regmap_config rk3036_codec_regmap_config = {
>> +	.reg_bits = 32,
>> +	.reg_stride = 4,
>> +	.val_bits = 32,
>> +};
> You could set it as const, since devm_regmap_init_mmio() expect it.
Sure, it expects const.
>
>> +
>> +#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(struct rk3036_codec_priv),
>> +			    GFP_KERNEL);
> It is prefered to use sizeof(*priv)
>
> Do you have run checkpatch.pl --strict ?
Thank you, I'll try --strict.
>
>> +	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);
> i> +	if (ret != 0) {
>
> Use if (ret)
Sure.
>> +		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..6c7dc53
>> --- /dev/null
>> +++ b/sound/soc/codecs/inno_rk3036.h
>> @@ -0,0 +1,120 @@
>> +/*
>> + * 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		BIT(0) /*codec system reset*/
>> +#define INNO_R00_CSR_WORK		BIT(0)
I made mistake during did a source code search/replace..
Fix it in V3.
>> +#define INNO_R00_CDCR_RESET		BIT(1) /*codec digital core reset*/
>> +#define INNO_R00_CDCR_WORK		BIT(1)
>> +#define INNO_R00_PRB_DISABLE		BIT(6) /*power reset bypass*/
>> +#define INNO_R00_PRB_ENABLE		BIT(6)
>> +
>> +#define INNO_R01_I2SMODE_MSK		BIT(4)
>> +#define INNO_R01_I2SMODE_SLAVE		BIT(4)
>> +#define INNO_R01_I2SMODE_MASTER		BIT(4)
I made mistake during did a source code search/replace..
Fix it in V3.

Thank you,
Shunqian
>> +#define INNO_R01_PINDIR_MSK		BIT(5)
>> +#define INNO_R01_PINDIR_IN_SLAVE	BIT(5) /*direction of pin*/
>> +#define INNO_R01_PINDIR_OUT_MASTER	BIT(5)
>> +
>> +#define INNO_R02_LRS_MSK		BIT(2)
>> +#define INNO_R02_LRS_NORMAL		BIT(2) /*DAC Left Right Swap*/
>> +#define INNO_R02_LRS_SWAP		BIT(2)
>> +#define INNO_R02_DACM_MSK		BIT(3)
>> +#define INNO_R02_DACM_PCM		BIT(3) /*DAC Mode*/
>> +#define INNO_R02_DACM_I2S		BIT(3)
>> +#define INNO_R02_DACM_LJM		BIT(3)
>> +#define INNO_R02_DACM_RJM		BIT(3)
>> +#define INNO_R02_VWL_MSK		BIT(5)
>> +#define INNO_R02_VWL_32BIT		BIT(5) /*1/2Frame Valid Word Length*/
>> +#define INNO_R02_VWL_24BIT		BIT(5)
>> +#define INNO_R02_VWL_20BIT		BIT(5)
>> +#define INNO_R02_VWL_16BIT		BIT(5)
>> +#define INNO_R02_LRCP_MSK		BIT(7)
>> +#define INNO_R02_LRCP_NORMAL		BIT(7) /*Left Right Polarity*/
>> +#define INNO_R02_LRCP_REVERSAL		BIT(7)
>> +
>> +#define INNO_R03_BCP_MSK		BIT(0)
>> +#define INNO_R03_BCP_NORMAL		BIT(0) /*DAC bit clock polarity*/
>> +#define INNO_R03_BCP_REVERSAL		BIT(0)
>> +#define INNO_R03_DACR_MSK		BIT(1)
>> +#define INNO_R03_DACR_RESET		BIT(1) /*DAC Reset*/
>> +#define INNO_R03_DACR_WORK		BIT(1)
>> +#define INNO_R03_FWL_MSK		BIT(2)
>> +#define INNO_R03_FWL_32BIT		BIT(2) /*1/2Frame Word Length*/
>> +#define INNO_R03_FWL_24BIT		BIT(2)
>> +#define INNO_R03_FWL_20BIT		BIT(2)
>> +#define INNO_R03_FWL_16BIT		BIT(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		BIT(4) /*PreCharge control for DAC*/
>> +#define INNO_R06_DAC_DISCHARGE		BIT(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_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	BIT(0)
>> +#define INNO_R10_CHARGE_SEL_CUR_400I_NO		BIT(0)
>> +#define INNO_R10_CHARGE_SEL_CUR_260I_YES	BIT(1)
>> +#define INNO_R10_CHARGE_SEL_CUR_260I_NO		BIT(1)
>> +#define INNO_R10_CHARGE_SEL_CUR_130I_YES	BIT(2)
>> +#define INNO_R10_CHARGE_SEL_CUR_130I_NO		BIT(2)
>> +#define INNO_R10_CHARGE_SEL_CUR_100I_YES	BIT(3)
>> +#define INNO_R10_CHARGE_SEL_CUR_100I_NO		BIT(3)
>> +#define INNO_R10_CHARGE_SEL_CUR_050I_YES	BIT(4)
>> +#define INNO_R10_CHARGE_SEL_CUR_050I_NO		BIT(4)
>> +#define INNO_R10_CHARGE_SEL_CUR_027I_YES	BIT(5)
>> +#define INNO_R10_CHARGE_SEL_CUR_027I_NO		BIT(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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> Regards
>
> LABBE Corentin
>
>
>