Unverified Commit 1a476abc authored by Frank Shi's avatar Frank Shi Committed by Mark Brown
Browse files

tas2770: add tas2770 smart PA kernel driver 



add tas2770 smart PA kernel driver

Signed-off-by: default avatarFrank Shi <shifu0704@thundersoft.com>
Link: https://lore.kernel.org/r/1568962709-19185-2-git-send-email-shifu0704@thundersoft.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 4378f1fb

sound/soc/codecs/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -179,6 +179,7 @@ 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_TAS5720 if I2C
@@ -1104,6 +1105,10 @@ 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

sound/soc/codecs/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -196,6 +196,7 @@ snd-soc-tas571x-objs := tas571x.o 
snd-soc-tas5720-objs := tas5720.o

snd-soc-tas6424-objs := tas6424.o

snd-soc-tda7419-objs := tda7419.o

snd-soc-tas2770-objs := tas2770.o

snd-soc-tfa9879-objs := tfa9879.o

snd-soc-tlv320aic23-objs := tlv320aic23.o

snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o
@@ -479,6 +480,7 @@ obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o 
obj-$(CONFIG_SND_SOC_TAS5720)	+= snd-soc-tas5720.o

obj-$(CONFIG_SND_SOC_TAS6424)	+= snd-soc-tas6424.o

obj-$(CONFIG_SND_SOC_TDA7419)	+= snd-soc-tda7419.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

sound/soc/codecs/tas2770.c

0 → 100644
+808 −0
Original line number Diff line number Diff line 
// 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>

//	Frank Shi <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



static void tas2770_reset(struct tas2770_priv *tas2770)

{

	if (tas2770->reset_gpio) {

		gpiod_set_value_cansleep(tas2770->reset_gpio, 0);

		msleep(20);

		gpiod_set_value_cansleep(tas2770->reset_gpio, 1);

	}

	snd_soc_component_write(tas2770->component, TAS2770_SW_RST,

		TAS2770_RST);

}



static int tas2770_set_bias_level(struct snd_soc_component *component,

				 enum snd_soc_bias_level level)

{

	struct tas2770_priv *tas2770 =

			snd_soc_component_get_drvdata(component);



	switch (level) {

	case SND_SOC_BIAS_ON:

		snd_soc_component_update_bits(component,

			TAS2770_PWR_CTRL,

			TAS2770_PWR_CTRL_MASK,

			TAS2770_PWR_CTRL_ACTIVE);

		break;



	case SND_SOC_BIAS_OFF:

		snd_soc_component_update_bits(component,

			TAS2770_PWR_CTRL,

			TAS2770_PWR_CTRL_MASK,

			TAS2770_PWR_CTRL_SHUTDOWN);

		break;



	default:

		dev_err(tas2770->dev,

				"wrong power level setting %d\n", level);

		return -EINVAL;

	}



	return 0;

}



#ifdef CONFIG_PM

static int tas2770_codec_suspend(struct snd_soc_component *component)

{

	int ret;



	ret = snd_soc_component_update_bits(component,

		TAS2770_PWR_CTRL,

		TAS2770_PWR_CTRL_MASK,

		TAS2770_PWR_CTRL_SHUTDOWN);

	if (ret)

		return ret;



	return 0;

}



static int tas2770_codec_resume(struct snd_soc_component *component)

{

	int ret;



	ret = snd_soc_component_update_bits(component,

		TAS2770_PWR_CTRL,

		TAS2770_PWR_CTRL_MASK,

		TAS2770_PWR_CTRL_ACTIVE);

	if (ret)

		return -EINVAL;



	return 0;

}

#else

#define tas2770_codec_suspend NULL

#define tas2770_codec_resume NULL

#endif



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_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 *tas2770 =

			snd_soc_component_get_drvdata(component);

	int ret;



	switch (event) {

	case SND_SOC_DAPM_POST_PMU:

		ret = snd_soc_component_update_bits(component,

			TAS2770_PWR_CTRL,

			TAS2770_PWR_CTRL_MASK,

			TAS2770_PWR_CTRL_MUTE);

		if (ret)

			goto end;

		break;

	case SND_SOC_DAPM_PRE_PMD:

		ret = snd_soc_component_update_bits(component,

			TAS2770_PWR_CTRL,

			TAS2770_PWR_CTRL_MASK,

			TAS2770_PWR_CTRL_SHUTDOWN);

		if (ret)

			goto end;

		break;

	default:

		dev_err(tas2770->dev, "Not supported evevt\n");

		return -EINVAL;

	}



end:

	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"},

};



static int tas2770_mute(struct snd_soc_dai *dai, int mute)

{

	struct snd_soc_component *component = dai->component;

	int ret;



	if (mute)

		ret = snd_soc_component_update_bits(component,

			TAS2770_PWR_CTRL,

			TAS2770_PWR_CTRL_MASK,

			TAS2770_PWR_CTRL_MUTE);

	else

		ret = snd_soc_component_update_bits(component,

			TAS2770_PWR_CTRL,

			TAS2770_PWR_CTRL_MASK,

			TAS2770_PWR_CTRL_ACTIVE);



	return ret;

}



static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)

{

	int ret;

	struct snd_soc_component *component = 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);

		tas2770->v_sense_slot = tas2770->i_sense_slot + 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);

		tas2770->v_sense_slot = tas2770->i_sense_slot + 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);

		tas2770->v_sense_slot = tas2770->i_sense_slot + 4;

		break;



	default:

		return -EINVAL;

	}



	tas2770->channel_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 |

		tas2770->v_sense_slot);

	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 |

		tas2770->i_sense_slot);



end:

	return ret;

}



static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate)

{

	int ret;

	struct snd_soc_component *component = 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)

		tas2770->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 *tas2770 =

			snd_soc_component_get_drvdata(component);

	int ret;



	ret = tas2770_set_bitwidth(tas2770, params_format(params));

	if (ret < 0)

		goto end;





	ret = tas2770_set_samplerate(tas2770, params_rate(params));



end:

	return ret;

}



static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)

{

	u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0;

	int ret;

	int value = 0;

	struct snd_soc_component *component = dai->component;

	struct tas2770_priv *tas2770 =

			snd_soc_component_get_drvdata(component);



	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {

	case SND_SOC_DAIFMT_CBS_CFS:

		break;

	default:

		dev_err(tas2770->dev, "ASI format master is not found\n");

		return -EINVAL;

	}



	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(tas2770->dev, "ASI format Inverse is not found\n");

		return -EINVAL;

	}



	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:

		tdm_rx_start_slot = 0;

		break;

	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(tas2770->dev,

			"DAI Format is not found, fmt=0x%x\n", fmt);

		return -EINVAL;

	}



	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;



	value = snd_soc_component_read32(component, TAS2770_TDM_CFG_REG3);



	tas2770->asi_format = fmt;



	return 0;

}



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)

{

	struct snd_soc_component *component = dai->component;

	struct tas2770_priv *tas2770 =

			snd_soc_component_get_drvdata(component);

	int left_slot, right_slot;

	int ret;



	if (tx_mask == 0 || rx_mask != 0)

		return -EINVAL;



	if (slots == 1) {

		if (tx_mask != 1)

			return -EINVAL;

		left_slot = 0;

		right_slot = 0;

	} else {

		left_slot = __ffs(tx_mask);

		tx_mask &= ~(1 << left_slot);

		if (tx_mask == 0) {

			right_slot = left_slot;

		} else {

			right_slot = __ffs(tx_mask);

			tx_mask &= ~(1 << right_slot);

		}

	}



	if (tx_mask != 0 || left_slot >= slots || right_slot >= slots)

		return -EINVAL;



	ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,

		TAS2770_TDM_CFG_REG3_30_MASK,

		(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,

	(right_slot << TAS2770_TDM_CFG_REG3_RXS_SHIFT));

	if (ret)

		return ret;



	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)

		tas2770->slot_width = slot_width;



	return ret;

}



static struct snd_soc_dai_ops tas2770_dai_ops = {

	.digital_mute = tas2770_mute,

	.hw_params  = tas2770_hw_params,

	.set_fmt    = tas2770_set_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 *tas2770 =

			snd_soc_component_get_drvdata(component);



	tas2770->component = component;



	return 0;

}



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("Speaker Playback Volume", TAS2770_PLAY_CFG_REG2,

		0, TAS2770_PLAY_CFG_REG2_VMAX, 1,

		tas2770_playback_volume),

	SOC_SINGLE_TLV("Amp Gain Volume", TAS2770_PLAY_CFG_REG0,

		0, 0x14, 0,

		tas2770_digital_tlv),

};



static const struct snd_soc_component_driver soc_component_driver_tas2770 = {

	.probe			= tas2770_codec_probe,

	.suspend		= tas2770_codec_suspend,

	.resume			= tas2770_codec_resume,

	.set_bias_level = tas2770_set_bias_level,

	.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 *tas2770)

{

	return devm_snd_soc_register_component(tas2770->dev,

		&soc_component_driver_tas2770,

		tas2770_dai_driver, ARRAY_SIZE(tas2770_dai_driver));

}



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 int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770)

{

	int rc = 0;



	rc = fwnode_property_read_u32(dev->fwnode, "ti,asi-format",

					&tas2770->asi_format);

	if (rc) {

		dev_err(tas2770->dev, "Looking up %s property failed %d\n",

			"ti,asi-format", rc);

		goto end;

	}



	rc = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",

			&tas2770->i_sense_slot);

	if (rc) {

		dev_err(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",

				&tas2770->v_sense_slot);

	if (rc) {

		dev_err(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 *tas2770;

	int result;



	tas2770 = devm_kzalloc(&client->dev,

		sizeof(struct tas2770_priv), GFP_KERNEL);

	if (!tas2770)

		return -ENOMEM;

	tas2770->dev = &client->dev;



	i2c_set_clientdata(client, tas2770);

	dev_set_drvdata(&client->dev, tas2770);

	tas2770->power_state = TAS2770_POWER_SHUTDOWN;



	tas2770->regmap = devm_regmap_init_i2c(client, &tas2770_i2c_regmap);

	if (IS_ERR(tas2770->regmap)) {

		result = PTR_ERR(tas2770->regmap);

		dev_err(&client->dev, "Failed to allocate register map: %d\n",

					result);

		goto end;

	}



	if (client->dev.of_node) {

		result = tas2770_parse_dt(&client->dev, tas2770);

		if (result) {

			dev_err(tas2770->dev, "%s: Failed to parse devicetree\n",

				__func__);

			goto end;

		}

	}



	tas2770->reset_gpio = devm_gpiod_get_optional(tas2770->dev,

							  "reset-gpio",

						      GPIOD_OUT_HIGH);

		if (IS_ERR(tas2770->reset_gpio)) {

			if (PTR_ERR(tas2770->reset_gpio) == -EPROBE_DEFER) {

				tas2770->reset_gpio = NULL;

				return -EPROBE_DEFER;

			}

		}



	tas2770->channel_size = 0;

	tas2770->slot_width = 0;



	tas2770_reset(tas2770);



	result = tas2770_register_codec(tas2770);

	if (result)

		dev_err(tas2770->dev, "Register codec failed.\n");



end:

	return result;

}



static int tas2770_i2c_remove(struct i2c_client *client)

{

	pm_runtime_disable(&client->dev);

	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,

		.of_match_table = of_match_ptr(tas2770_of_match),

	},

	.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");

sound/soc/codecs/tas2770.h

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