Re: [alsa-devel] [PATCH] tas2770: add tas2770 smart PA kernel driver

[Dan Murphy <dmurphy@ti.com>]

Shi

On 9/6/19 2:06 AM, shifu0704@thundersoft.com wrote:
> From: Frank Shi <shifu0704@thundersoft.com>
>
> add tas2770 smart PA kernel driver
>
> Signed-off-by: Frank Shi <shifu0704@thundersoft.com>
> ---
>   sound/soc/codecs/Kconfig   |    5 +
>   sound/soc/codecs/Makefile  |    2 +
>   sound/soc/codecs/tas2770.c | 1103 ++++++++++++++++++++++++++++++++++++++++++++
>   sound/soc/codecs/tas2770.h |  173 +++++++
>   4 files changed, 1283 insertions(+)
>   create mode 100644 sound/soc/codecs/tas2770.c
>   create mode 100644 sound/soc/codecs/tas2770.h
>
> diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
> index 8f3e787..cc92da3 100644
> --- a/sound/soc/codecs/Kconfig
> +++ b/sound/soc/codecs/Kconfig
> @@ -111,6 +111,7 @@ config SND_SOC_ALL_CODECS
>   	select SND_SOC_STAC9766 if SND_SOC_AC97_BUS
>   	select SND_SOC_STI_SAS
>   	select SND_SOC_TAS2552 if I2C
> +	select SND_SOC_TAS2770 if I2C
>   	select SND_SOC_TAS5086 if I2C
>   	select SND_SOC_TAS571X if I2C
>   	select SND_SOC_TFA9879 if I2C
> @@ -652,6 +653,10 @@ config SND_SOC_TAS2552
>   	tristate "Texas Instruments TAS2552 Mono Audio amplifier"
>   	depends on I2C
>   
> +config SND_SOC_TAS2770
> +	tristate "Texas Instruments TAS2770 speaker amplifier"
> +	depends on I2C
> +
>   config SND_SOC_TAS5086
>   	tristate "Texas Instruments TAS5086 speaker amplifier"
>   	depends on I2C
> diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
> index 5305cc6..1b58d08 100644
> --- a/sound/soc/codecs/Makefile
> +++ b/sound/soc/codecs/Makefile
> @@ -116,6 +116,7 @@ snd-soc-stac9766-objs := stac9766.o
>   snd-soc-sti-sas-objs := sti-sas.o
>   snd-soc-tas5086-objs := tas5086.o
>   snd-soc-tas571x-objs := tas571x.o
> +snd-soc-tas2770-objs :=  tas2770.o
extra space between = tas2770.o
>   snd-soc-tfa9879-objs := tfa9879.o
>   snd-soc-tlv320aic23-objs := tlv320aic23.o
>   snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o
> @@ -332,6 +333,7 @@ obj-$(CONFIG_SND_SOC_STI_SAS)	+= snd-soc-sti-sas.o
>   obj-$(CONFIG_SND_SOC_TAS2552)	+= snd-soc-tas2552.o
>   obj-$(CONFIG_SND_SOC_TAS5086)	+= snd-soc-tas5086.o
>   obj-$(CONFIG_SND_SOC_TAS571X)	+= snd-soc-tas571x.o
> +obj-$(CONFIG_SND_SOC_TAS2770) += snd-soc-tas2770.o
>   obj-$(CONFIG_SND_SOC_TFA9879)	+= snd-soc-tfa9879.o
>   obj-$(CONFIG_SND_SOC_TLV320AIC23)	+= snd-soc-tlv320aic23.o
>   obj-$(CONFIG_SND_SOC_TLV320AIC23_I2C)	+= snd-soc-tlv320aic23-i2c.o
> diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c
> new file mode 100644
> index 0000000..9fc0c11
> --- /dev/null
> +++ b/sound/soc/codecs/tas2770.c
> @@ -0,0 +1,1103 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * ALSA SoC Texas Instruments TAS2770 20-W Digital Input Mono Class-D
> + * Audio Amplifier with Speaker I/V Sense
> + *
> + * Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/
> + *	Author: Tracy Yi <tracy-yi@ti.com>
> + *	Shi Fu <shifu0704@thundersoft.com>
> + */
> +
> +#include <linux/module.h>
> +#include <linux/moduleparam.h>
> +#include <linux/err.h>
> +#include <linux/init.h>
> +#include <linux/delay.h>
> +#include <linux/pm.h>
> +#include <linux/i2c.h>
> +#include <linux/gpio.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/firmware.h>
> +#include <linux/regmap.h>
> +#include <linux/of.h>
> +#include <linux/of_gpio.h>
> +#include <linux/slab.h>
> +#include <sound/soc.h>
> +#include <sound/pcm.h>
> +#include <sound/pcm_params.h>
> +#include <sound/initval.h>
> +#include <sound/tlv.h>
> +
> +#include "tas2770.h"
> +
> +#define TAS2770_MDELAY 0xFFFFFFFE
> +#define TAS2770_CHECK_PERIOD	5000	/* 5 second */
> +
> +static void tas2770_hw_reset(struct tas2770_priv *p_tas2770)
> +{
> +	if (p_tas2770->mn_reset_gpio) {
> +		gpiod_set_value_cansleep(p_tas2770->mn_reset_gpio, 0);
> +		msleep(20);
> +		gpiod_set_value_cansleep(p_tas2770->mn_reset_gpio, 1);
> +	}
> +
> +	p_tas2770->mn_current_book = -1;
> +	p_tas2770->mn_current_page = -1;
> +}
> +
> +static void tas2770_enable_irq(struct tas2770_priv *p_tas2770, bool enable)
> +{
> +	if (enable) {
> +		if (p_tas2770->mb_irq_enable)
> +			return;
> +
> +		if (gpio_is_valid(p_tas2770->mn_irq))
> +			enable_irq(p_tas2770->mn_irq);
> +		p_tas2770->mb_irq_enable = true;
> +	} else {
> +		if (gpio_is_valid(p_tas2770->mn_irq))
> +			disable_irq_nosync(p_tas2770->mn_irq);
> +		p_tas2770->mb_irq_enable = false;
> +	}
> +}
> +
> +static int tas2770_runtime_suspend(struct tas2770_priv *p_tas2770)
> +{
> +	p_tas2770->mb_runtime_suspend = true;
> +
> +	return 0;
> +}
> +
> +static int tas2770_runtime_resume(struct tas2770_priv *p_tas2770)
> +{
> +
> +	p_tas2770->mb_runtime_suspend = false;
> +
> +	return 0;
> +}
> +
> +static int tas2770_regmap_write(struct tas2770_priv *p_tas2770,
> +			unsigned int reg, unsigned int value)

Why are you calling this function regmap_write when it uses the 
snd_soc_component_write?

And why do we need this function at all?  For retries?  Does every call 
to write or read need to have a retry?

I am think you can eliminate this function and just use the 
snd_soc_component_read/write directly


> +{
> +	int nResult = 0;
> +	int retry_count = TAS2770_I2C_RETRY_COUNT;
> +
> +	while (retry_count--) {
> +		nResult = snd_soc_component_write(p_tas2770->component, reg,
> +			value);
> +		if (!nResult)
> +			break;
> +		msleep(20);
> +	}
> +	if (retry_count == -1)
> +		return ERROR_I2C_FAILED;
> +	else
> +		return 0;
> +}
> +
> +static int tas2770_regmap_read(struct tas2770_priv *p_tas2770,
> +			unsigned int reg, unsigned int *value)
> +{
> +	int nResult = 0;
> +	int retry_count = TAS2770_I2C_RETRY_COUNT;
> +
> +	while (retry_count--) {
> +		nResult = snd_soc_component_read(p_tas2770->component, reg,
> +			value);
> +		if (!nResult)
> +			break;
> +
> +		msleep(20);
> +	}
> +	if (!retry_count)
> +		return ERROR_I2C_FAILED;
> +
> +	return 0;
> +}
> +
> +static int tas2770_codec_suspend(struct snd_soc_component *component)
> +{
> +	struct tas2770_priv *p_tas2770 =
> +			snd_soc_component_get_drvdata(component);
> +
> +	mutex_lock(&p_tas2770->codec_lock);
> +	tas2770_runtime_suspend(p_tas2770);
> +	mutex_unlock(&p_tas2770->codec_lock);
> +
> +	return 0;
> +}
> +
> +static int tas2770_codec_resume(struct snd_soc_component *component)
> +{
> +	struct tas2770_priv *p_tas2770 =
> +			snd_soc_component_get_drvdata(component);
> +
> +	mutex_lock(&p_tas2770->codec_lock);
> +	tas2770_runtime_resume(p_tas2770);
> +	mutex_unlock(&p_tas2770->codec_lock);
> +
> +	return 0;
> +}
> +
> +static const char * const tas2770_ASI1_src[] = {
> +	"I2C offset", "Left", "Right", "LeftRightDiv2",
> +};
> +
> +static SOC_ENUM_SINGLE_DECL(
> +	tas2770_ASI1_src_enum, TAS2770_TDM_CFG_REG2,
> +	4, tas2770_ASI1_src);
> +
> +static const struct snd_kcontrol_new tas2770_asi1_mux =
> +	SOC_DAPM_ENUM("ASI1 Source", tas2770_ASI1_src_enum);
> +
> +static int tas2770_set_power_state(struct tas2770_priv *p_tas2770, int state)
> +{
> +	struct snd_soc_component *component = p_tas2770->component;
> +
> +	switch (state) {
> +	case TAS2770_POWER_ACTIVE:
> +		snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
> +			TAS2770_PWR_CTRL_MASK,
> +			TAS2770_PWR_CTRL_ACTIVE);
> +		p_tas2770->mn_power_state = TAS2770_POWER_ACTIVE;
> +		tas2770_enable_irq(p_tas2770, true);
> +		break;
> +
> +	case TAS2770_POWER_MUTE:
> +		snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
> +			TAS2770_PWR_CTRL_MASK,
> +			TAS2770_PWR_CTRL_MUTE);
> +		p_tas2770->mn_power_state = TAS2770_POWER_MUTE;
> +		break;
> +
> +	case TAS2770_POWER_SHUTDOWN:
> +		snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
> +			TAS2770_PWR_CTRL_MASK,
> +			TAS2770_PWR_CTRL_SHUTDOWN);
> +		tas2770_enable_irq(p_tas2770, false);
> +		p_tas2770->mn_power_state = TAS2770_POWER_SHUTDOWN;
> +		break;
> +
> +	default:
> +		dev_err(p_tas2770->dev,
> +				"wrong power state setting %d\n", state);
> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +
> +static int tas2770_dac_event(struct snd_soc_dapm_widget *w,
> +			     struct snd_kcontrol *kcontrol, int event)
> +{
> +	struct snd_soc_component *component =
> +			snd_soc_dapm_to_component(w->dapm);
> +	struct tas2770_priv *p_tas2770 =
> +			snd_soc_component_get_drvdata(component);
> +	int ret;
> +
> +	mutex_lock(&p_tas2770->codec_lock);
> +
> +	switch (event) {
> +	case SND_SOC_DAPM_POST_PMU:
> +		ret = tas2770_set_power_state(p_tas2770,
> +			TAS2770_POWER_MUTE);
> +		if (ret)
> +			goto end;
> +		break;
> +	case SND_SOC_DAPM_PRE_PMD:
> +		ret = tas2770_set_power_state(p_tas2770,
> +			TAS2770_POWER_SHUTDOWN);
> +		if (ret)
> +			goto end;
> +		break;
> +	default:
> +		dev_err(p_tas2770->dev, "Not supported evevt\n");
> +		ret = -EINVAL;
> +	}
> +
> +end:
> +	mutex_unlock(&p_tas2770->codec_lock);
> +	return ret;
> +}
> +
> +static const struct snd_kcontrol_new isense_switch =
> +	SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 3, 1, 1);
> +static const struct snd_kcontrol_new vsense_switch =
> +	SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 2, 1, 1);
> +
> +static const struct snd_soc_dapm_widget tas2770_dapm_widgets[] = {
> +	SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0),
> +	SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0,
> +				&tas2770_asi1_mux),
> +	SND_SOC_DAPM_SWITCH("ISENSE", TAS2770_PWR_CTRL, 3, 1,
> +			&isense_switch),
> +	SND_SOC_DAPM_SWITCH("VSENSE", TAS2770_PWR_CTRL, 2, 1,
> +			&vsense_switch),
> +	SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2770_dac_event,
> +	SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
> +	SND_SOC_DAPM_OUTPUT("OUT"),
> +	SND_SOC_DAPM_SIGGEN("VMON"),
> +	SND_SOC_DAPM_SIGGEN("IMON")
> +};
> +
> +static const struct snd_soc_dapm_route tas2770_audio_map[] = {
> +	{"ASI1 Sel", "I2C offset", "ASI1"},
> +	{"ASI1 Sel", "Left", "ASI1"},
> +	{"ASI1 Sel", "Right", "ASI1"},
> +	{"ASI1 Sel", "LeftRightDiv2", "ASI1"},
> +	{"DAC", NULL, "ASI1 Sel"},
> +	{"OUT", NULL, "DAC"},
> +	{"ISENSE", "Switch", "IMON"},
> +	{"VSENSE", "Switch", "VMON"},
> +};
> +
> +
extra new line
> +static int tas2770_mute(struct snd_soc_dai *dai, int mute)
> +{
> +	struct snd_soc_component *component = dai->component;
> +	struct tas2770_priv *p_tas2770 =
> +			snd_soc_component_get_drvdata(component);
> +	int ret;
> +
> +
extra new line
> +	mutex_lock(&p_tas2770->codec_lock);
> +	if (mute)
> +		ret = tas2770_set_power_state(p_tas2770, TAS2770_POWER_MUTE);
> +	else
> +		ret = tas2770_set_power_state(p_tas2770, TAS2770_POWER_ACTIVE);
> +
> +	mutex_unlock(&p_tas2770->codec_lock);
> +	return ret;
> +}
> +
> +static int tas2770_set_slot(struct snd_soc_component *component, int slot_width)
> +{
> +	int ret;
> +	struct tas2770_priv *p_tas2770 =
> +			snd_soc_component_get_drvdata(component);
> +
> +	switch (slot_width) {
> +	case 16:
> +	ret = snd_soc_component_update_bits(component,
> +		TAS2770_TDM_CFG_REG2,
> +		TAS2770_TDM_CFG_REG2_RXS_MASK,
> +		TAS2770_TDM_CFG_REG2_RXS_16BITS);
> +	break;
> +
> +	case 24:
> +	ret = snd_soc_component_update_bits(component,
> +		TAS2770_TDM_CFG_REG2,
> +		TAS2770_TDM_CFG_REG2_RXS_MASK,
> +		TAS2770_TDM_CFG_REG2_RXS_24BITS);
> +	break;
> +
> +	case 32:
> +	ret = snd_soc_component_update_bits(component,
> +		TAS2770_TDM_CFG_REG2,
> +		TAS2770_TDM_CFG_REG2_RXS_MASK,
> +		TAS2770_TDM_CFG_REG2_RXS_32BITS);
> +	break;
> +
> +	case 0:
> +	/* Do not change slot width */
> +	ret = 0;
> +	break;
> +
> +	default:
> +		ret = -EINVAL;
> +	}
> +
> +	if (!ret)
> +		p_tas2770->mn_slot_width = slot_width;
> +
> +	return ret;
> +}
> +
> +static int tas2770_set_bitwidth(struct tas2770_priv *p_tas2770, int bitwidth)
> +{
> +	int ret;
> +	struct snd_soc_component *component = p_tas2770->component;
> +
> +	switch (bitwidth) {
> +	case SNDRV_PCM_FORMAT_S16_LE:
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG2,
> +			TAS2770_TDM_CFG_REG2_RXW_MASK,
> +			TAS2770_TDM_CFG_REG2_RXW_16BITS);
> +			/* If machine driver did not call set slot width */
> +		if (p_tas2770->mn_slot_width == 0)
> +			tas2770_set_slot(component, TAS2770_SLOT_16BIT);
> +		p_tas2770->mn_v_mon_slot_no = p_tas2770->mn_i_mon_slot_no + 2;
> +		break;
> +	case SNDRV_PCM_FORMAT_S24_LE:
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG2,
> +			TAS2770_TDM_CFG_REG2_RXW_MASK,
> +			TAS2770_TDM_CFG_REG2_RXW_24BITS);
> +		if (p_tas2770->mn_slot_width == 0)
> +			tas2770_set_slot(component, TAS2770_SLOT_32BIT);
> +		p_tas2770->mn_v_mon_slot_no = p_tas2770->mn_i_mon_slot_no + 4;
> +		break;
> +	case SNDRV_PCM_FORMAT_S32_LE:
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG2,
> +			TAS2770_TDM_CFG_REG2_RXW_MASK,
> +			TAS2770_TDM_CFG_REG2_RXW_32BITS);
> +		if (p_tas2770->mn_slot_width == 0)
> +			tas2770_set_slot(component, TAS2770_SLOT_32BIT);
> +		p_tas2770->mn_v_mon_slot_no = p_tas2770->mn_i_mon_slot_no + 4;
> +		break;
> +
> +	default:
> +		return -EINVAL;
> +	}
> +
> +	p_tas2770->mn_ch_size = bitwidth;
> +
> +	ret = snd_soc_component_update_bits(component,
> +		TAS2770_TDM_CFG_REG5,
> +		TAS2770_TDM_CFG_REG5_VSNS_MASK |
> +		TAS2770_TDM_CFG_REG5_50_MASK,
> +		TAS2770_TDM_CFG_REG5_VSNS_ENABLE |
> +		p_tas2770->mn_v_mon_slot_no);
> +	if (ret)
> +		goto end;
> +	ret = snd_soc_component_update_bits(component,
> +		TAS2770_TDM_CFG_REG6,
> +		TAS2770_TDM_CFG_REG6_ISNS_MASK |
> +		TAS2770_TDM_CFG_REG6_50_MASK,
> +		TAS2770_TDM_CFG_REG6_ISNS_ENABLE |
> +		p_tas2770->mn_i_mon_slot_no);
> +
> +end:
> +	return ret;
> +}
> +
> +static int tas2770_set_samplerate(struct tas2770_priv *p_tas2770,
> +								int samplerate)
> +{
> +	int ret;
> +	struct snd_soc_component *component = p_tas2770->component;
> +
> +	switch (samplerate) {
> +	case 48000:
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG0,
> +			TAS2770_TDM_CFG_REG0_SMP_MASK,
> +			TAS2770_TDM_CFG_REG0_SMP_48KHZ);
> +		if (ret)
> +			goto end;
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG0,
> +			TAS2770_TDM_CFG_REG0_31_MASK,
> +			TAS2770_TDM_CFG_REG0_31_44_1_48KHZ);
> +		if (ret)
> +			goto end;
> +		break;
> +	case 44100:
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG0,
> +			TAS2770_TDM_CFG_REG0_SMP_MASK,
> +			TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
> +		if (ret)
> +			goto end;
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG0,
> +			TAS2770_TDM_CFG_REG0_31_MASK,
> +			TAS2770_TDM_CFG_REG0_31_44_1_48KHZ);
> +		if (ret)
> +			goto end;
> +		break;
> +	case 96000:
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG0,
> +			TAS2770_TDM_CFG_REG0_SMP_MASK,
> +			TAS2770_TDM_CFG_REG0_SMP_48KHZ);
> +		if (ret)
> +			goto end;
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG0,
> +			TAS2770_TDM_CFG_REG0_31_MASK,
> +			TAS2770_TDM_CFG_REG0_31_88_2_96KHZ);
> +		break;
> +	case 88200:
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG0,
> +			TAS2770_TDM_CFG_REG0_SMP_MASK,
> +			TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
> +		if (ret)
> +			goto end;
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG0,
> +			TAS2770_TDM_CFG_REG0_31_MASK,
> +			TAS2770_TDM_CFG_REG0_31_88_2_96KHZ);
> +		break;
> +	case 19200:
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG0,
> +			TAS2770_TDM_CFG_REG0_SMP_MASK,
> +			TAS2770_TDM_CFG_REG0_SMP_48KHZ);
> +		if (ret)
> +			goto end;
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG0,
> +			TAS2770_TDM_CFG_REG0_31_MASK,
> +			TAS2770_TDM_CFG_REG0_31_176_4_192KHZ);
> +		if (ret)
> +			goto end;
> +		break;
> +	case 17640:
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG0,
> +			TAS2770_TDM_CFG_REG0_SMP_MASK,
> +			TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
> +		if (ret)
> +			goto end;
> +		ret = snd_soc_component_update_bits(component,
> +			TAS2770_TDM_CFG_REG0,
> +			TAS2770_TDM_CFG_REG0_31_MASK,
> +			TAS2770_TDM_CFG_REG0_31_176_4_192KHZ);
> +		break;
> +	default:
> +		ret = -EINVAL;
> +	}
> +
> +end:
> +	if (!ret)
> +		p_tas2770->mn_sampling_rate = samplerate;
> +	return ret;
> +}
> +
> +static int tas2770_hw_params(struct snd_pcm_substream *substream,
> +			     struct snd_pcm_hw_params *params,
> +			     struct snd_soc_dai *dai)
> +{
> +	struct snd_soc_component *component = dai->component;
> +	struct tas2770_priv *p_tas2770 =
> +			snd_soc_component_get_drvdata(component);
> +	int ret;
> +
> +	mutex_lock(&p_tas2770->codec_lock);
> +
> +	ret = tas2770_set_bitwidth(p_tas2770, params_format(params));
> +	if (ret < 0)
> +		goto end;
> +
> +
> +	ret = tas2770_set_samplerate(p_tas2770, params_rate(params));
> +
> +end:
> +	mutex_unlock(&p_tas2770->codec_lock);
> +	return ret;
> +}
> +
> +static int tas2770_set_fmt(struct tas2770_priv *p_tas2770, unsigned int fmt)
> +{
> +	u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0;
> +	int ret;
> +	int value = 0;
> +	struct snd_soc_component *component = p_tas2770->component;
> +
> +	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
> +	case SND_SOC_DAIFMT_CBS_CFS:
> +		break;
> +	default:
> +		dev_err(p_tas2770->dev, "ASI format master is not found\n");
> +		ret = -EINVAL;
> +		return ret;
> +	}
> +
> +	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
> +	case SND_SOC_DAIFMT_NB_NF:
> +		asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING;
> +		break;
> +	case SND_SOC_DAIFMT_IB_NF:
> +		asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_FALING;
> +		break;
> +	default:
> +		dev_err(p_tas2770->dev, "ASI format Inverse is not found\n");
> +		ret = -EINVAL;
> +		return ret;
> +	}
> +
> +	ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1,
> +		TAS2770_TDM_CFG_REG1_RX_MASK,
> +		asi_cfg_1);
> +	if (ret)
> +		return ret;
> +
> +	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
> +	case (SND_SOC_DAIFMT_I2S):
> +		tdm_rx_start_slot = 1;
> +		break;
> +	case (SND_SOC_DAIFMT_DSP_A):
> +	case (SND_SOC_DAIFMT_DSP_B):
> +		tdm_rx_start_slot = 1;
> +		break;
> +	case (SND_SOC_DAIFMT_LEFT_J):
> +		tdm_rx_start_slot = 0;
> +		break;
> +	default:
> +		dev_err(p_tas2770->dev,
> +			"DAI Format is not found, fmt=0x%x\n", fmt);
> +		ret = -EINVAL;
> +		return ret;
> +	}
> +
> +	ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1,
> +		TAS2770_TDM_CFG_REG1_MASK,
> +	(tdm_rx_start_slot << TAS2770_TDM_CFG_REG1_51_SHIFT));
> +	if (ret)
> +		return ret;
> +	ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
> +		TAS2770_TDM_CFG_REG3_30_MASK,
> +		(p_tas2770->mn_left_slot <<
> +			TAS2770_TDM_CFG_REG3_30_SHIFT));
> +	if (ret)
> +		return ret;
> +	ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
> +		TAS2770_TDM_CFG_REG3_RXS_MASK,
> +	(p_tas2770->mn_right_slot <<
> +		TAS2770_TDM_CFG_REG3_RXS_SHIFT));
> +	if (ret)
> +		return ret;
> +
> +	value = snd_soc_component_read32(component, TAS2770_TDM_CFG_REG3);
> +
> +	p_tas2770->mn_asi_format = fmt;
> +
> +	return 0;
> +}
> +
> +static int tas2770_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
> +{
> +	struct snd_soc_component *component = dai->component;
> +	struct tas2770_priv *p_tas2770 =
> +			snd_soc_component_get_drvdata(component);
> +	int ret;
> +
> +	mutex_lock(&p_tas2770->codec_lock);
> +
> +	ret = tas2770_set_fmt(p_tas2770, fmt);
> +
> +	mutex_unlock(&p_tas2770->codec_lock);
> +	return ret;
> +}
> +
> +static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai,
> +				unsigned int tx_mask,
> +				unsigned int rx_mask,
> +				int slots, int slot_width)
> +{
> +	int ret;
> +	struct snd_soc_component *component = dai->component;
> +	struct tas2770_priv *p_tas2770 =
> +			snd_soc_component_get_drvdata(component);
> +
> +	mutex_lock(&p_tas2770->codec_lock);
> +	ret = tas2770_set_slot(component, slot_width);
> +	mutex_unlock(&p_tas2770->codec_lock);
> +
> +	return ret;
> +}
> +
> +static struct snd_soc_dai_ops tas2770_dai_ops = {
> +	.digital_mute = tas2770_mute,
> +	.hw_params  = tas2770_hw_params,
> +	.set_fmt    = tas2770_set_dai_fmt,
> +	.set_tdm_slot = tas2770_set_dai_tdm_slot,
> +};
> +
> +#define TAS2770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
> +		SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
> +
> +#define TAS2770_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
> +					   SNDRV_PCM_RATE_96000 |\
> +					    SNDRV_PCM_RATE_192000\
> +					  )
> +
> +static struct snd_soc_dai_driver tas2770_dai_driver[] = {
> +	{
> +		.name = "tas2770 ASI1",
> +		.id = 0,
> +		.playback = {
> +			.stream_name    = "ASI1 Playback",
> +			.channels_min   = 2,
> +			.channels_max   = 2,
> +			.rates      = TAS2770_RATES,
> +			.formats    = TAS2770_FORMATS,
> +		},
> +		.capture = {
> +			.stream_name    = "ASI1 Capture",
> +			.channels_min   = 0,
> +			.channels_max   = 2,
> +			.rates          = TAS2770_RATES,
> +			.formats    = TAS2770_FORMATS,
> +		},
> +		.ops = &tas2770_dai_ops,
> +		.symmetric_rates = 1,
> +	},
> +};
> +
> +static int tas2770_codec_probe(struct snd_soc_component *component)
> +{
> +	struct tas2770_priv *p_tas2770 =
> +			snd_soc_component_get_drvdata(component);
> +
> +	p_tas2770->component = component;
> +
> +	return 0;
> +}
> +
> +static void tas2770_codec_remove(struct snd_soc_component *component)
> +{
> +	pm_runtime_put(component->dev);
> +}
> +
> +static DECLARE_TLV_DB_SCALE(tas2770_digital_tlv, 1100, 50, 0);
> +static DECLARE_TLV_DB_SCALE(tas2770_playback_volume, -12750, 50, 0);
> +
> +static const struct snd_kcontrol_new tas2770_snd_controls[] = {
> +	SOC_SINGLE_TLV("Amp Output Level", TAS2770_PLAY_CFG_REG0,
> +		0, 0x14, 0,
> +		tas2770_digital_tlv),
> +	SOC_SINGLE_TLV("Playback Volume", TAS2770_PLAY_CFG_REG2,
> +		0, TAS2770_PLAY_CFG_REG2_VMAX, 1,
> +		tas2770_playback_volume),
> +};
> +
> +static const struct snd_soc_component_driver soc_component_driver_tas2770 = {
> +	.probe			= tas2770_codec_probe,
> +	.remove			= tas2770_codec_remove,
> +	.suspend		= tas2770_codec_suspend,
> +	.resume			= tas2770_codec_resume,
> +	.controls		= tas2770_snd_controls,
> +	.num_controls		= ARRAY_SIZE(tas2770_snd_controls),
> +	.dapm_widgets		= tas2770_dapm_widgets,
> +	.num_dapm_widgets	= ARRAY_SIZE(tas2770_dapm_widgets),
> +	.dapm_routes		= tas2770_audio_map,
> +	.num_dapm_routes	= ARRAY_SIZE(tas2770_audio_map),
> +	.idle_bias_on		= 1,
> +	.endianness		= 1,
> +	.non_legacy_dai_naming	= 1,
> +};
> +
> +static int tas2770_register_codec(struct tas2770_priv *p_tas2770)
> +{
> +	return devm_snd_soc_register_component(p_tas2770->dev,
> +		&soc_component_driver_tas2770,
> +		tas2770_dai_driver, ARRAY_SIZE(tas2770_dai_driver));
> +}
> +
> +static void tas2770_load_config(struct tas2770_priv *p_tas2770)
> +{
> +	int ret;
> +
> +	tas2770_hw_reset(p_tas2770);
> +	tas2770_regmap_write(p_tas2770, TAS2770_SW_RST,
> +			TAS2770_RST);
> +
> +	ret = tas2770_set_slot(p_tas2770->component, p_tas2770->mn_slot_width);
> +	if (ret)
> +		goto error_out;
> +
> +	ret = tas2770_set_fmt(p_tas2770, p_tas2770->mn_asi_format);
> +	if (ret)
> +		goto error_out;
> +
> +	ret = tas2770_set_bitwidth(p_tas2770, p_tas2770->mn_ch_size);
> +	if (ret)
> +		goto error_out;
> +
> +	ret = tas2770_set_samplerate(p_tas2770, p_tas2770->mn_sampling_rate);
> +	if (ret)
> +		goto error_out;
> +
> +	ret = tas2770_set_power_state(p_tas2770, p_tas2770->mn_power_state);
> +	if (ret)
> +		goto error_out;
> +
> +error_out:
> +		return;
> +}
> +
> +static const struct reg_default tas2770_reg_defaults[] = {
> +	{ TAS2770_PAGE, 0x00 },
> +	{ TAS2770_SW_RST, 0x00 },
> +	{ TAS2770_PWR_CTRL, 0x0e },
> +	{ TAS2770_PLAY_CFG_REG0, 0x10 },
> +	{ TAS2770_PLAY_CFG_REG1, 0x01 },
> +	{ TAS2770_PLAY_CFG_REG2, 0x00 },
> +	{ TAS2770_MSC_CFG_REG0, 0x07 },
> +	{ TAS2770_TDM_CFG_REG1, 0x02 },
> +	{ TAS2770_TDM_CFG_REG2, 0x0a },
> +	{ TAS2770_TDM_CFG_REG3, 0x10 },
> +	{ TAS2770_INT_MASK_REG0, 0xfc },
> +	{ TAS2770_INT_MASK_REG1, 0xb1 },
> +	{ TAS2770_INT_CFG, 0x05 },
> +	{ TAS2770_MISC_IRQ, 0x81 },
> +	{ TAS2770_CLK_CGF, 0x0c },
> +
> +};
> +
> +static bool tas2770_volatile(struct device *dev, unsigned int reg)
> +{
> +	switch (reg) {
> +	case TAS2770_PAGE: /* regmap implementation requires this */
> +	case TAS2770_SW_RST: /* always clears after write */
> +	case TAS2770_BO_PRV_REG0:/* has a self clearing bit */
> +	case TAS2770_LVE_INT_REG0:
> +	case TAS2770_LVE_INT_REG1:
> +	case TAS2770_LAT_INT_REG0:/* Sticky interrupt flags */
> +	case TAS2770_LAT_INT_REG1:/* Sticky interrupt flags */
> +	case TAS2770_VBAT_MSB:
> +	case TAS2770_VBAT_LSB:
> +	case TAS2770_TEMP_MSB:
> +	case TAS2770_TEMP_LSB:
> +		return true;
> +	}
> +	return false;
> +}
> +
> +static bool tas2770_writeable(struct device *dev, unsigned int reg)
> +{
> +	switch (reg) {
> +	case TAS2770_LVE_INT_REG0:
> +	case TAS2770_LVE_INT_REG1:
> +	case TAS2770_LAT_INT_REG0:
> +	case TAS2770_LAT_INT_REG1:
> +	case TAS2770_VBAT_MSB:
> +	case TAS2770_VBAT_LSB:
> +	case TAS2770_TEMP_MSB:
> +	case TAS2770_TEMP_LSB:
> +	case TAS2770_TDM_CLK_DETC:
> +	case TAS2770_REV_AND_GPID:
> +		return false;
> +	}
> +	return true;
> +}
> +
> +static const struct regmap_range_cfg tas2770_regmap_ranges[] = {
> +	{
> +		.range_min = 0,
> +		.range_max = 1 * 128,
> +		.selector_reg = TAS2770_PAGE,
> +		.selector_mask = 0xff,
> +		.selector_shift = 0,
> +		.window_start = 0,
> +		.window_len = 128,
> +	},
> +};
> +
> +static const struct regmap_config tas2770_i2c_regmap = {
> +	.reg_bits = 8,
> +	.val_bits = 8,
> +	.writeable_reg = tas2770_writeable,
> +	.volatile_reg = tas2770_volatile,
> +	.reg_defaults = tas2770_reg_defaults,
> +	.num_reg_defaults = ARRAY_SIZE(tas2770_reg_defaults),
> +	.cache_type = REGCACHE_RBTREE,
> +	.ranges = tas2770_regmap_ranges,
> +	.num_ranges = ARRAY_SIZE(tas2770_regmap_ranges),
> +	.max_register = 1 * 128,
> +};
> +
> +static irqreturn_t tas2770_irq_handler(int irq, void *dev_id)
> +{
> +	struct tas2770_priv *p_tas2770 = (struct tas2770_priv *)dev_id;
> +
> +	unsigned int nDevInt1Status = 0, nDevInt2Status = 0;
> +	int n_counter = 2;
> +	int n_result;
> +
> +	mutex_lock(&p_tas2770->codec_lock);
> +
> +	tas2770_enable_irq(p_tas2770, false);
> +
> +	if (p_tas2770->mb_runtime_suspend)
> +		goto end;
> +
> +	if (p_tas2770->mn_power_state == TAS2770_POWER_SHUTDOWN)
> +		goto end;
> +
> +	n_result = tas2770_regmap_write(p_tas2770, TAS2770_INT_MASK_REG0,
> +				TAS2770_INT_MASK_REG0_DISABLE);
> +	if (n_result)
> +		goto reload;
> +	n_result = tas2770_regmap_write(p_tas2770, TAS2770_INT_MASK_REG1,
> +				TAS2770_INT_MASK_REG1_DISABLE);
> +	if (n_result)
> +		goto reload;
> +
> +	n_result = tas2770_regmap_read(p_tas2770,
> +			TAS2770_LAT_INT_REG0, &nDevInt1Status);
> +	if (n_result >= 0)
> +		n_result = tas2770_regmap_read(p_tas2770,
> +			TAS2770_LAT_INT_REG1, &nDevInt2Status);
> +	else
> +		goto reload;
> +
> +	if (((nDevInt1Status & 0x3) != 0) || ((nDevInt2Status & 0x0f) != 0)) {
magic numbers need #defines
> +		/* in case of INT_OC, INT_OT, INT_OVLT, INT_UVLT, INT_BO */
> +
> +		if (nDevInt1Status &
> +		TAS2770_LAT_INT_REG0_OCE_FLG) {
> +			p_tas2770->mn_err_code |= ERROR_OVER_CURRENT;
> +			dev_err(p_tas2770->dev, "SPK over current!\n");
> +		} else {
> +			p_tas2770->mn_err_code &= ~ERROR_OVER_CURRENT;
> +		}
> +
> +		if (nDevInt1Status &
> +		TAS2770_LAT_INT_REG0_OTE_FLG) {
> +			p_tas2770->mn_err_code |= ERROR_DIE_OVERTEMP;
> +			dev_err(p_tas2770->dev, "die over temperature!\n");
> +		} else {
> +			p_tas2770->mn_err_code &= ~ERROR_DIE_OVERTEMP;
> +		}
> +
> +		if (nDevInt2Status &
> +		TAS2770_LAT_INT_REG1_VBA_TOV) {
> +			p_tas2770->mn_err_code |= ERROR_OVER_VOLTAGE;
> +			dev_err(p_tas2770->dev, "SPK over voltage!\n");
> +		} else {
> +			p_tas2770->mn_err_code &= ~ERROR_OVER_VOLTAGE;
> +		}
> +
> +		if (nDevInt2Status &
> +		TAS2770_LAT_INT_REG1_VBA_TUV) {
> +			p_tas2770->mn_err_code |= ERROR_UNDER_VOLTAGE;
> +			dev_err(p_tas2770->dev, "SPK under voltage!\n");
> +		} else {
> +			p_tas2770->mn_err_code &= ~ERROR_UNDER_VOLTAGE;
> +		}
> +
> +		if (nDevInt2Status &
> +		TAS2770_LAT_INT_REG1_BOUT_FLG) {
> +			p_tas2770->mn_err_code |= ERROR_BROWNOUT;
> +			dev_err(p_tas2770->dev, "brownout!\n");
> +		} else {
> +			p_tas2770->mn_err_code &= ~ERROR_BROWNOUT;
> +		}
> +
> +		goto reload;
> +	} else {
> +		n_counter = 2;
> +
> +		while (n_counter > 0) {
> +			n_result = tas2770_regmap_read(p_tas2770,
> +					TAS2770_PWR_CTRL, &nDevInt1Status);
> +			if (n_result)
> +				goto reload;
> +
> +			if ((nDevInt1Status &
> +				TAS2770_PWR_CTRL_MASK)
> +				!= TAS2770_PWR_CTRL_SHUTDOWN)
> +				break;
> +
> +			n_counter--;
> +			if (n_counter > 0)
> +				msleep(20);
> +		}
> +
> +		if ((nDevInt1Status &
> +			TAS2770_PWR_CTRL_MASK)
> +			== TAS2770_PWR_CTRL_SHUTDOWN) {
> +			dev_err(p_tas2770->dev, "%s, Critical ERROR REG[0x%x] = 0x%x\n",
> +				__func__,
> +				TAS2770_PWR_CTRL,
> +				nDevInt1Status);

The formatting here is a bit funky this looks like most can honor the 80 
LoC guidance


> +			p_tas2770->mn_err_code |= ERROR_CLASSD_PWR;
> +			goto reload;
> +		}
> +		p_tas2770->mn_err_code &= ~ERROR_CLASSD_PWR;
> +	}
> +
> +	n_result = tas2770_regmap_write(p_tas2770,
> +					TAS2770_INT_MASK_REG0, 0xfc);
Magic number?  What is 0xfc do?
> +	if (n_result)
> +		goto reload;
> +
> +	n_result = tas2770_regmap_write(p_tas2770,
> +					TAS2770_INT_MASK_REG1, 0xb1);
Magic number?  What is 0xb1 do?
> +	if (n_result)
> +		goto reload;
> +
> +	goto end;
> +
> +reload:
> +	/* hardware reset and reload */
> +	tas2770_load_config(p_tas2770);
> +
> +end:
> +	mutex_unlock(&p_tas2770->codec_lock);
> +	tas2770_enable_irq(p_tas2770, true);
> +
> +	return IRQ_HANDLED;
> +}
> +
> +static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *p_tas2770)
> +{
> +	int rc = 0;
> +
> +	rc = fwnode_property_read_u32(dev->fwnode, "ti,asi-format",
> +					&p_tas2770->mn_asi_format);
> +	if (rc) {
> +		dev_err(p_tas2770->dev, "Looking up %s property failed %d\n",
> +			"ti,asi-format", rc);
> +		goto end;
> +	}
> +
> +	rc = fwnode_property_read_u32(dev->fwnode, "ti,left-slot",
> +			 &p_tas2770->mn_left_slot);
> +	if (rc) {
> +		dev_err(p_tas2770->dev, "Looking up %s property failed %d\n",
> +			"ti,left-slot", rc);
> +		goto end;
> +	}
> +
> +	rc = fwnode_property_read_u32(dev->fwnode, "ti,right-slot",
> +			&p_tas2770->mn_right_slot);
> +	if (rc) {
> +		dev_err(p_tas2770->dev, "Looking up %s property failed %d\n",
> +			"ti,right-slot", rc);
> +		goto end;
> +	}
> +
> +	rc = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
> +			&p_tas2770->mn_i_mon_slot_no);
> +	if (rc) {
> +		dev_err(p_tas2770->dev, "Looking up %s property failed %d\n",
> +			"ti,imon-slot-no", rc);
> +		goto end;
> +	}
> +
> +	rc = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
> +				&p_tas2770->mn_v_mon_slot_no);
> +	if (rc) {
> +		dev_err(p_tas2770->dev, "Looking up %s property failed %d\n",
> +			"ti,vmon-slot-no", rc);
> +		goto end;
> +	}
> +
> +end:
> +	return rc;
> +}
> +
> +static int tas2770_i2c_probe(struct i2c_client *client,
> +			const struct i2c_device_id *id)
> +{
> +	struct tas2770_priv *p_tas2770;
> +	int n_result;
> +
> +	p_tas2770 = devm_kzalloc(&client->dev,
> +		sizeof(struct tas2770_priv), GFP_KERNEL);
> +	if (p_tas2770 == NULL)

if (!p_tas2770)


> +		return -ENOMEM;
> +	p_tas2770->dev = &client->dev;
> +	p_tas2770->mn_irq = client->irq;
> +
> +	i2c_set_clientdata(client, p_tas2770);
> +	dev_set_drvdata(&client->dev, p_tas2770);
> +	p_tas2770->mn_power_state = TAS2770_POWER_SHUTDOWN;
> +
> +	p_tas2770->regmap = devm_regmap_init_i2c(client, &tas2770_i2c_regmap);
> +	if (IS_ERR(p_tas2770->regmap)) {
> +		n_result = PTR_ERR(p_tas2770->regmap);
> +		dev_err(&client->dev, "Failed to allocate register map: %d\n",
> +					n_result);
> +		goto end;
> +	}
> +
> +	if (client->dev.of_node) {
> +		n_result = tas2770_parse_dt(&client->dev, p_tas2770);
> +		if (n_result) {
> +			dev_err(p_tas2770->dev, "%s: Failed to parse devicetree\n",
> +				__func__);
> +			goto end;
> +		}
> +	}
> +
> +	p_tas2770->mn_reset_gpio = devm_gpiod_get_optional(p_tas2770->dev,
> +							  "reset-gpio",
> +						      GPIOD_OUT_HIGH);
> +		if (IS_ERR(p_tas2770->mn_reset_gpio)) {
> +			if (PTR_ERR(p_tas2770->mn_reset_gpio) == -EPROBE_DEFER)
> +				return -EPROBE_DEFER;
> +			p_tas2770->mn_reset_gpio = NULL;
> +		}
> +

Formatting issue here


> +	if (p_tas2770->mn_irq > 0) {
> +		n_result = devm_request_threaded_irq(p_tas2770->dev,
> +			   p_tas2770->mn_irq,
> +			   NULL, tas2770_irq_handler,
> +			   IRQF_TRIGGER_FALLING | IRQF_ONESHOT, client->name,
> +			   p_tas2770);
> +		if (n_result) {
> +			dev_err(p_tas2770->dev, "Unable to request IRQ\n");
> +			return n_result;
> +		}
> +	}
> +
> +	p_tas2770->mn_ch_size = 0;
> +	p_tas2770->mn_slot_width = 0;
> +
> +	tas2770_hw_reset(p_tas2770);
> +	tas2770_regmap_write(p_tas2770, TAS2770_SW_RST,
> +			TAS2770_RST);

Why a hw_reset then a sw reset?  Shouldn't this be in a function called 
reset that either does HW or SW reset?


> +
> +	mutex_init(&p_tas2770->dev_lock);
> +
> +	mutex_init(&p_tas2770->codec_lock);
> +	n_result = tas2770_register_codec(p_tas2770);
> +	if (n_result)
> +		dev_err(p_tas2770->dev, "Register codec failed.\n");
> +
> +end:
> +	return n_result;
> +}
> +
> +static int tas2770_i2c_remove(struct i2c_client *client)
> +{
> +	struct tas2770_priv *p_tas2770 = i2c_get_clientdata(client);
> +
> +	mutex_destroy(&p_tas2770->dev_lock);
mutex_destroy(codec_lock)
> +
> +	return 0;
> +}
> +
> +
> +static const struct i2c_device_id tas2770_i2c_id[] = {
> +	{ "tas2770", 0},
> +	{ }
> +};
> +MODULE_DEVICE_TABLE(i2c, tas2770_i2c_id);
> +
> +#if defined(CONFIG_OF)
> +static const struct of_device_id tas2770_of_match[] = {
> +	{ .compatible = "ti,tas2770" },
> +	{},
> +};
> +MODULE_DEVICE_TABLE(of, tas2770_of_match);
> +#endif
> +
> +static struct i2c_driver tas2770_i2c_driver = {
> +	.driver = {
> +		.name   = "tas2770",
> +		.owner  = THIS_MODULE,
> +#if defined(CONFIG_OF)
> +		.of_match_table = of_match_ptr(tas2770_of_match),
> +#endif
> +	},
> +	.probe      = tas2770_i2c_probe,
> +	.remove     = tas2770_i2c_remove,
> +	.id_table   = tas2770_i2c_id,
> +};
> +
> +module_i2c_driver(tas2770_i2c_driver);
> +
> +MODULE_AUTHOR("Shi Fu <shifu0704@thundersoft.com>");
> +MODULE_DESCRIPTION("TAS2770 I2C Smart Amplifier driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/sound/soc/codecs/tas2770.h b/sound/soc/codecs/tas2770.h
> new file mode 100644
> index 0000000..f08e208
> --- /dev/null
> +++ b/sound/soc/codecs/tas2770.h
> @@ -0,0 +1,173 @@
> +/* SPDX-License-Identifier: GPL-2.0
> + *
> + * ALSA SoC TAS2770 codec driver
> + *
> + *  Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/
> + */
> +#ifndef __TAS2770__
> +#define __TAS2770__
> +
> +/* Book Control Register (available in page0 of each book) */
> +#define TAS2770_BOOKCTL_PAGE            0
> +#define TAS2770_BOOKCTL_REG         127
> +#define TAS2770_REG(page, reg)        ((page * 128) + reg)
> +    /* Page */
> +#define TAS2770_PAGE  TAS2770_REG(0X0, 0x00)
> +#define TAS2770_PAGE_PAGE_MASK  255
> +    /* Software Reset */
> +#define TAS2770_SW_RST  TAS2770_REG(0X0, 0x01)
> +#define TAS2770_RST  BIT(0)
> +    /* Power Control */
> +#define TAS2770_PWR_CTRL  TAS2770_REG(0X0, 0x02)
> +#define TAS2770_PWR_CTRL_MASK  0x3
> +#define TAS2770_PWR_CTRL_ACTIVE  0x0
> +#define TAS2770_PWR_CTRL_MUTE  BIT(0)
> +#define TAS2770_PWR_CTRL_SHUTDOWN  0x2
> +    /* Playback Configuration Reg0 */
> +#define TAS2770_PLAY_CFG_REG0  TAS2770_REG(0X0, 0x03)
> +    /* Playback Configuration Reg1 */
> +#define TAS2770_PLAY_CFG_REG1  TAS2770_REG(0X0, 0x04)
> +    /* Playback Configuration Reg2 */
> +#define TAS2770_PLAY_CFG_REG2  TAS2770_REG(0X0, 0x05)
> +#define TAS2770_PLAY_CFG_REG2_VMAX 0xc9
> +    /* Misc Configuration Reg0 */
> +#define TAS2770_MSC_CFG_REG0  TAS2770_REG(0X0, 0x07)
> +    /* TDM Configuration Reg0 */
> +#define TAS2770_TDM_CFG_REG0  TAS2770_REG(0X0, 0x0A)
> +#define TAS2770_TDM_CFG_REG0_SMP_MASK  BIT(5)
> +#define TAS2770_TDM_CFG_REG0_SMP_48KHZ  0x0
> +#define TAS2770_TDM_CFG_REG0_SMP_44_1KHZ  BIT(5)
> +#define TAS2770_TDM_CFG_REG0_31_MASK  0xe
> +#define TAS2770_TDM_CFG_REG0_31_44_1_48KHZ  0x6
> +#define TAS2770_TDM_CFG_REG0_31_88_2_96KHZ  0x8
> +#define TAS2770_TDM_CFG_REG0_31_176_4_192KHZ  0xa
> +    /* TDM Configuration Reg1 */
> +#define TAS2770_TDM_CFG_REG1  TAS2770_REG(0X0, 0x0B)
> +#define TAS2770_TDM_CFG_REG1_MASK 0x3e
> +#define TAS2770_TDM_CFG_REG1_51_SHIFT  1
> +#define TAS2770_TDM_CFG_REG1_RX_MASK  BIT(0)
> +#define TAS2770_TDM_CFG_REG1_RX_RSING  0x0
> +#define TAS2770_TDM_CFG_REG1_RX_FALING  BIT(0)
> +    /* TDM Configuration Reg2 */
> +#define TAS2770_TDM_CFG_REG2  TAS2770_REG(0X0, 0x0C)
> +#define TAS2770_TDM_CFG_REG2_RXW_MASK  0xc
> +#define TAS2770_TDM_CFG_REG2_RXW_16BITS  0x0
> +#define TAS2770_TDM_CFG_REG2_RXW_24BITS  0x8
> +#define TAS2770_TDM_CFG_REG2_RXW_32BITS  0xc
> +#define TAS2770_TDM_CFG_REG2_RXS_MASK    0x3
> +#define TAS2770_TDM_CFG_REG2_RXS_16BITS  0x0
> +#define TAS2770_TDM_CFG_REG2_RXS_24BITS  BIT(0)
> +#define TAS2770_TDM_CFG_REG2_RXS_32BITS  0x2
> +    /* TDM Configuration Reg3 */
> +#define TAS2770_TDM_CFG_REG3  TAS2770_REG(0X0, 0x0D)
> +#define TAS2770_TDM_CFG_REG3_RXS_MASK  0xf0
> +#define TAS2770_TDM_CFG_REG3_RXS_SHIFT 0x4
> +#define TAS2770_TDM_CFG_REG3_30_MASK  0xf
> +#define TAS2770_TDM_CFG_REG3_30_SHIFT 0
> +    /* TDM Configuration Reg5 */
> +#define TAS2770_TDM_CFG_REG5  TAS2770_REG(0X0, 0x0F)
> +#define TAS2770_TDM_CFG_REG5_VSNS_MASK  BIT(6)
> +#define TAS2770_TDM_CFG_REG5_VSNS_ENABLE  BIT(6)
> +#define TAS2770_TDM_CFG_REG5_50_MASK  0x3f
> +    /* TDM Configuration Reg6 */
> +#define TAS2770_TDM_CFG_REG6  TAS2770_REG(0X0, 0x10)
> +#define TAS2770_TDM_CFG_REG6_ISNS_MASK  BIT(6)
> +#define TAS2770_TDM_CFG_REG6_ISNS_ENABLE  BIT(6)
> +#define TAS2770_TDM_CFG_REG6_50_MASK  0x3f
> +    /* Brown Out Prevention Reg0 */
> +#define TAS2770_BO_PRV_REG0  TAS2770_REG(0X0, 0x1B)
> +    /* Interrupt MASK Reg0 */
> +#define TAS2770_INT_MASK_REG0  TAS2770_REG(0X0, 0x20)
> +#define TAS2770_INT_MASK_REG0_DISABLE 0xff
> +    /* Interrupt MASK Reg1 */
> +#define TAS2770_INT_MASK_REG1  TAS2770_REG(0X0, 0x21)
> +#define TAS2770_INT_MASK_REG1_DISABLE 0xff
> +    /* Live-Interrupt Reg0 */
> +#define TAS2770_LVE_INT_REG0  TAS2770_REG(0X0, 0x22)
> +    /* Live-Interrupt Reg1 */
> +#define TAS2770_LVE_INT_REG1  TAS2770_REG(0X0, 0x23)
> +    /* Latched-Interrupt Reg0 */
> +#define TAS2770_LAT_INT_REG0  TAS2770_REG(0X0, 0x24)
> +#define TAS2770_LAT_INT_REG0_OCE_FLG  BIT(1)
> +#define TAS2770_LAT_INT_REG0_OTE_FLG  BIT(0)
> +    /* Latched-Interrupt Reg1 */
> +#define TAS2770_LAT_INT_REG1  TAS2770_REG(0X0, 0x25)
> +#define TAS2770_LAT_INT_REG1_VBA_TOV  BIT(3)
> +#define TAS2770_LAT_INT_REG1_VBA_TUV  BIT(2)
> +#define TAS2770_LAT_INT_REG1_BOUT_FLG  BIT(1)
> +    /* VBAT MSB */
> +#define TAS2770_VBAT_MSB  TAS2770_REG(0X0, 0x27)
> +    /* VBAT LSB */
> +#define TAS2770_VBAT_LSB  TAS2770_REG(0X0, 0x28)
> +    /* TEMP MSB */
> +#define TAS2770_TEMP_MSB  TAS2770_REG(0X0, 0x29)
> +    /* TEMP LSB */
> +#define TAS2770_TEMP_LSB  TAS2770_REG(0X0, 0x2A)
> +    /* Interrupt Configuration */
> +#define TAS2770_INT_CFG  TAS2770_REG(0X0, 0x30)
> +    /* Misc IRQ */
> +#define TAS2770_MISC_IRQ  TAS2770_REG(0X0, 0x32)
> +    /* Clock Configuration */
> +#define TAS2770_CLK_CGF  TAS2770_REG(0X0, 0x3C)
> +    /* TDM Clock detection monitor */
> +#define TAS2770_TDM_CLK_DETC  TAS2770_REG(0X0, 0x77)
> +    /* Revision and PG ID */
> +#define TAS2770_REV_AND_GPID  TAS2770_REG(0X0, 0x7D)
> +
> +#define TAS2770_POWER_ACTIVE 0
> +#define TAS2770_POWER_MUTE 1
> +#define TAS2770_POWER_SHUTDOWN 2
> +#define ERROR_OVER_CURRENT  0x0000001
> +#define ERROR_DIE_OVERTEMP  0x0000002
> +#define ERROR_OVER_VOLTAGE  0x0000004
> +#define ERROR_UNDER_VOLTAGE 0x0000008
> +#define ERROR_BROWNOUT      0x0000010
> +#define ERROR_CLASSD_PWR    0x0000020
> +#define TAS2770_SLOT_16BIT  16
> +#define TAS2770_SLOT_32BIT  32
> +#define TAS2770_I2C_RETRY_COUNT      3
> +#define ERROR_I2C_FAILED            -2
> +
> +struct tas2770_register {
> +	int book;
> +	int page;
> +	int reg;
> +};
> +
> +struct tas2770_dai_cfg {
> +	unsigned int dai_fmt;
> +	unsigned int tdm_delay;
> +};
> +
> +struct tas2770_priv {
> +	struct device *dev;
> +	struct regmap *regmap;
> +	struct snd_soc_codec *codec;
> +	struct snd_soc_component *component;
> +	struct mutex dev_lock;
> +	struct hrtimer mtimer;
> +	int mn_clkin;
> +	int mn_clkid;
> +	int mn_power_state;
> +	int mn_current_book;
> +	int mn_current_page;
> +	int mn_load;
> +	int mn_asi_format;
> +	struct gpio_desc *mn_reset_gpio;
> +	int mn_irq;
> +	bool mb_irq_enable;
> +	int mn_sampling_rate;
> +	int mn_frame_size;
> +	int mn_pll;
> +	int mn_left_slot;
> +	int mn_right_slot;
> +	int mn_ch_size;
> +	int mn_slot_width;
> +	int mn_v_mon_slot_no;
> +	int mn_i_mon_slot_no;
> +	bool mb_runtime_suspend;
> +	unsigned int mn_err_code;
> +	struct mutex codec_lock;
> +};
> +
> +#endif /* __TAS2770__ */
_______________________________________________
Alsa-devel mailing list
Alsa-devel@alsa-project.org
https://mailman.alsa-project.org/mailman/listinfo/alsa-devel