src/kernel/linux/v4.19/sound/soc/codecs/max9867.c - T800 - Gitiles

 /*
  * max9867.c -- max9867 ALSA SoC Audio driver
  *
  * Copyright 2013-15 Maxim Integrated Products
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */

 #include <linux/delay.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/regmap.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
 #include <sound/tlv.h>
 #include "max9867.h"

 static const char *const max9867_spmode[] = {
 	"Stereo Diff", "Mono Diff",
 	"Stereo Cap", "Mono Cap",
 	"Stereo Single", "Mono Single",
 	"Stereo Single Fast", "Mono Single Fast"
 };
 static const char *const max9867_sidetone_text[] = {
 	"None", "Left", "Right", "LeftRight", "LeftRightDiv2",
 };
 static const char *const max9867_filter_text[] = {"IIR", "FIR"};

 static SOC_ENUM_SINGLE_DECL(max9867_filter, MAX9867_CODECFLTR, 7,
 	max9867_filter_text);
 static SOC_ENUM_SINGLE_DECL(max9867_spkmode, MAX9867_MODECONFIG, 0,
 	max9867_spmode);
 static SOC_ENUM_SINGLE_DECL(max9867_sidetone, MAX9867_DACGAIN, 6,
 	max9867_sidetone_text);
 static DECLARE_TLV_DB_SCALE(max9860_capture_tlv, -600, 200, 0);
 static DECLARE_TLV_DB_SCALE(max9860_mic_tlv, 2000, 100, 1);
 static DECLARE_TLV_DB_SCALE(max9860_adc_left_tlv, -1200, 100, 1);
 static DECLARE_TLV_DB_SCALE(max9860_adc_right_tlv, -1200, 100, 1);
 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max98088_micboost_tlv,
 	0, 1, TLV_DB_SCALE_ITEM(0, 2000, 0),
 	2, 2, TLV_DB_SCALE_ITEM(3000, 0, 0),
 );

 static const struct snd_kcontrol_new max9867_snd_controls[] = {
 	SOC_DOUBLE_R("Master Playback Volume", MAX9867_LEFTVOL,
 				MAX9867_RIGHTVOL, 0, 63, 1),
 	SOC_DOUBLE_R_TLV("Capture Volume", MAX9867_LEFTMICGAIN,
 			MAX9867_RIGHTMICGAIN,
 			0, 15, 1, max9860_capture_tlv),
 	SOC_DOUBLE_R_TLV("Mic Volume", MAX9867_LEFTMICGAIN,
 			MAX9867_RIGHTMICGAIN, 0, 31, 1, max9860_mic_tlv),
 	SOC_DOUBLE_R_TLV("Mic Boost Volume", MAX9867_LEFTMICGAIN,
 			MAX9867_RIGHTMICGAIN, 5, 3, 0, max98088_micboost_tlv),
 	SOC_ENUM("Digital Sidetone Src", max9867_sidetone),
 	SOC_SINGLE("Sidetone Volume", MAX9867_DACGAIN, 0, 31, 1),
 	SOC_SINGLE("DAC Volume", MAX9867_DACLEVEL, 4, 3, 0),
 	SOC_SINGLE("DAC Attenuation", MAX9867_DACLEVEL, 0, 15, 1),
 	SOC_SINGLE_TLV("ADC Left Volume", MAX9867_ADCLEVEL,
 			4, 15, 1, max9860_adc_left_tlv),
 	SOC_SINGLE_TLV("ADC Right Volume", MAX9867_ADCLEVEL,
 			0, 15, 1, max9860_adc_right_tlv),
 	SOC_ENUM("Speaker Mode", max9867_spkmode),
 	SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0),
 	SOC_SINGLE("ZCD Switch", MAX9867_MODECONFIG, 5, 1, 0),
 	SOC_ENUM("DSP Filter", max9867_filter),
 };

 static const char *const max9867_mux[] = {"None", "Mic", "Line", "Mic_Line"};

 static SOC_ENUM_SINGLE_DECL(max9867_mux_enum,
 	MAX9867_INPUTCONFIG, MAX9867_INPUT_SHIFT,
 	max9867_mux);

 static const struct snd_kcontrol_new max9867_dapm_mux_controls =
 	SOC_DAPM_ENUM("Route", max9867_mux_enum);

 static const struct snd_kcontrol_new max9867_left_dapm_control =
 	SOC_DAPM_SINGLE("Switch", MAX9867_PWRMAN, 6, 1, 0);
 static const struct snd_kcontrol_new max9867_right_dapm_control =
 	SOC_DAPM_SINGLE("Switch", MAX9867_PWRMAN, 5, 1, 0);
 static const struct snd_kcontrol_new max9867_line_dapm_control =
 	SOC_DAPM_SINGLE("Switch", MAX9867_LEFTLINELVL, 6, 1, 1);

 static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = {
 	SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0),
 	SND_SOC_DAPM_DAC("Left DAC", NULL, MAX9867_PWRMAN, 3, 0),
 	SND_SOC_DAPM_DAC("Right DAC", NULL, MAX9867_PWRMAN, 2, 0),
 	SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
 	SND_SOC_DAPM_OUTPUT("HPOUT"),

 	SND_SOC_DAPM_AIF_IN("DAI_IN", "HiFi Capture", 0, SND_SOC_NOPM, 0, 0),
 	SND_SOC_DAPM_ADC("Left ADC", "HiFi Capture", MAX9867_PWRMAN, 1, 0),
 	SND_SOC_DAPM_ADC("Right ADC", "HiFi Capture", MAX9867_PWRMAN, 0, 0),
 	SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
 		&max9867_dapm_mux_controls),

 	SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
 	SND_SOC_DAPM_SWITCH("Left Line", MAX9867_LEFTLINELVL, 6, 1,
 		&max9867_left_dapm_control),
 	SND_SOC_DAPM_SWITCH("Right Line", MAX9867_RIGTHLINELVL, 6, 1,
 		&max9867_right_dapm_control),
 	SND_SOC_DAPM_SWITCH("Line Mixer", SND_SOC_NOPM, 0, 0,
 		&max9867_line_dapm_control),
 	SND_SOC_DAPM_INPUT("LINE_IN"),
 };

 static const struct snd_soc_dapm_route max9867_audio_map[] = {
 	{"Left DAC", NULL, "DAI_OUT"},
 	{"Right DAC", NULL, "DAI_OUT"},
 	{"Output Mixer", NULL, "Left DAC"},
 	{"Output Mixer", NULL, "Right DAC"},
 	{"HPOUT", NULL, "Output Mixer"},

 	{"Left ADC", NULL, "DAI_IN"},
 	{"Right ADC", NULL, "DAI_IN"},
 	{"Input Mixer", NULL, "Left ADC"},
 	{"Input Mixer", NULL, "Right ADC"},
 	{"Input Mux", "Line", "Input Mixer"},
 	{"Input Mux", "Mic", "Input Mixer"},
 	{"Input Mux", "Mic_Line", "Input Mixer"},
 	{"Right Line", "Switch", "Input Mux"},
 	{"Left Line", "Switch", "Input Mux"},
 	{"LINE_IN", NULL, "Left Line"},
 	{"LINE_IN", NULL, "Right Line"},
 };

 enum rates {
 	pcm_rate_8, pcm_rate_16, pcm_rate_24,
 	pcm_rate_32, pcm_rate_44,
 	pcm_rate_48, max_pcm_rate,
 };

 static const struct ni_div_rates {
 	u32 mclk;
 	u16 ni[max_pcm_rate];
 } ni_div[] = {
 	{11289600, {0x116A, 0x22D4, 0x343F, 0x45A9, 0x6000, 0x687D} },
 	{12000000, {0x1062, 0x20C5, 0x3127, 0x4189, 0x5A51, 0x624E} },
 	{12288000, {0x1000, 0x2000, 0x3000, 0x4000, 0x5833, 0x6000} },
 	{13000000, {0x0F20, 0x1E3F, 0x2D5F, 0x3C7F, 0x535F, 0x5ABE} },
 	{19200000, {0x0A3D, 0x147B, 0x1EB8, 0x28F6, 0x3873, 0x3D71} },
 	{24000000, {0x1062, 0x20C5, 0x1893, 0x4189, 0x5A51, 0x624E} },
 	{26000000, {0x0F20, 0x1E3F, 0x16AF, 0x3C7F, 0x535F, 0x5ABE} },
 	{27000000, {0x0E90, 0x1D21, 0x15D8, 0x3A41, 0x5048, 0x5762} },
 };

 static inline int get_ni_value(int mclk, int rate)
 {
 	int i, ret = 0;

 	/* find the closest rate index*/
 	for (i = 0; i < ARRAY_SIZE(ni_div); i++) {
 		if (ni_div[i].mclk >= mclk)
 			break;
 	}
 	if (i == ARRAY_SIZE(ni_div))
 		return -EINVAL;

 	switch (rate) {
 	case 8000:
 		return ni_div[i].ni[pcm_rate_8];
 	case 16000:
 		return ni_div[i].ni[pcm_rate_16];
 	case 32000:
 		return ni_div[i].ni[pcm_rate_32];
 	case 44100:
 		return ni_div[i].ni[pcm_rate_44];
 	case 48000:
 		return ni_div[i].ni[pcm_rate_48];
 	default:
 		pr_err("%s wrong rate %d\n", __func__, rate);
 		ret = -EINVAL;
 	}
 	return ret;
 }

 static int max9867_dai_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 max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 	unsigned int ni_h, ni_l;
 	int value;

 	value = get_ni_value(max9867->sysclk, params_rate(params));
 	if (value < 0)
 		return value;

 	ni_h = (0xFF00 & value) >> 8;
 	ni_l = 0x00FF & value;
 	/* set up the ni value */
 	regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
 		MAX9867_NI_HIGH_MASK, ni_h);
 	regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
 		MAX9867_NI_LOW_MASK, ni_l);
 	if (!max9867->master) {
 		/*
 		 * digital pll locks on to any externally supplied LRCLK signal
 		 * and also enable rapid lock mode.
 		 */
 		regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
 			MAX9867_RAPID_LOCK, MAX9867_RAPID_LOCK);
 		regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
 			MAX9867_PLL, MAX9867_PLL);
 	} else {
 		unsigned long int bclk_rate, pclk_bclk_ratio;
 		int bclk_value;

 		bclk_rate = params_rate(params) * 2 * params_width(params);
 		pclk_bclk_ratio = max9867->pclk/bclk_rate;
 		switch (params_width(params)) {
 		case 8:
 		case 16:
 			switch (pclk_bclk_ratio) {
 			case 2:
 				bclk_value = MAX9867_IFC1B_PCLK_2;
 				break;
 			case 4:
 				bclk_value = MAX9867_IFC1B_PCLK_4;
 				break;
 			case 8:
 				bclk_value = MAX9867_IFC1B_PCLK_8;
 				break;
 			case 16:
 				bclk_value = MAX9867_IFC1B_PCLK_16;
 				break;
 			default:
 				dev_err(component->dev,
 					"unsupported sampling rate\n");
 				return -EINVAL;
 			}
 			break;
 		case 24:
 			bclk_value = MAX9867_IFC1B_24BIT;
 			break;
 		case 32:
 			bclk_value = MAX9867_IFC1B_32BIT;
 			break;
 		default:
 			dev_err(component->dev, "unsupported sampling rate\n");
 			return -EINVAL;
 		}
 		regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
 			MAX9867_IFC1B_BCLK_MASK, bclk_value);
 	}
 	return 0;
 }

 static int max9867_mute(struct snd_soc_dai *dai, int mute)
 {
 	struct snd_soc_component *component = dai->component;
 	struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);

 	if (mute)
 		regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL,
 			MAX9867_DAC_MUTE_MASK, MAX9867_DAC_MUTE_MASK);
 	else
 		regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL,
 			MAX9867_DAC_MUTE_MASK, 0);
 	return 0;
 }

 static int max9867_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 		int clk_id, unsigned int freq, int dir)
 {
 	struct snd_soc_component *component = codec_dai->component;
 	struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 	int value = 0;

 	/* Set the prescaler based on the master clock frequency*/
 	if (freq >= 10000000 && freq <= 20000000) {
 		value |= MAX9867_PSCLK_10_20;
 		max9867->pclk =  freq;
 	} else if (freq >= 20000000 && freq <= 40000000) {
 		value |= MAX9867_PSCLK_20_40;
 		max9867->pclk =  freq/2;
 	} else if (freq >= 40000000 && freq <= 60000000) {
 		value |= MAX9867_PSCLK_40_60;
 		max9867->pclk =  freq/4;
 	} else {
 		dev_err(component->dev,
 			"Invalid clock frequency %uHz (required 10-60MHz)\n",
 			freq);
 		return -EINVAL;
 	}
 	value = value << MAX9867_PSCLK_SHIFT;
 	max9867->sysclk = freq;
 	/* exact integer mode is not supported */
 	value &= ~MAX9867_FREQ_MASK;
 	regmap_update_bits(max9867->regmap, MAX9867_SYSCLK,
 			MAX9867_PSCLK_MASK, value);
 	return 0;
 }

 static int max9867_dai_set_fmt(struct snd_soc_dai *codec_dai,
 		unsigned int fmt)
 {
 	struct snd_soc_component *component = codec_dai->component;
 	struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
 	u8 iface1A = 0, iface1B = 0;

 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 	case SND_SOC_DAIFMT_CBM_CFM:
 		max9867->master = 1;
 		iface1A |= MAX9867_MASTER;
 		break;
 	case SND_SOC_DAIFMT_CBS_CFS:
 		max9867->master = 0;
 		iface1A &= ~MAX9867_MASTER;
 		break;
 	default:
 		return -EINVAL;
 	}

 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_I2S:
 		iface1A |= MAX9867_I2S_DLY;
 		break;
 	case SND_SOC_DAIFMT_DSP_A:
 		iface1A |= MAX9867_TDM_MODE | MAX9867_SDOUT_HIZ;
 		break;
 	default:
 		return -EINVAL;
 	}

 	/* Clock inversion bits, BCI and WCI */
 	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 	case SND_SOC_DAIFMT_NB_NF:
 		break;
 	case SND_SOC_DAIFMT_IB_IF:
 		iface1A |= MAX9867_WCI_MODE | MAX9867_BCI_MODE;
 		break;
 	case SND_SOC_DAIFMT_IB_NF:
 		iface1A |= MAX9867_BCI_MODE;
 		break;
 	case SND_SOC_DAIFMT_NB_IF:
 		iface1A |= MAX9867_WCI_MODE;
 		break;
 	default:
 		return -EINVAL;
 	}

 	regmap_write(max9867->regmap, MAX9867_IFC1A, iface1A);
 	regmap_write(max9867->regmap, MAX9867_IFC1B, iface1B);
 	return 0;
 }

 static const struct snd_soc_dai_ops max9867_dai_ops = {
 	.set_fmt = max9867_dai_set_fmt,
 	.set_sysclk	= max9867_set_dai_sysclk,
 	.digital_mute	= max9867_mute,
 	.hw_params = max9867_dai_hw_params,
 };

 #define MAX9867_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
 	SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 #define MAX9867_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)

 static struct snd_soc_dai_driver max9867_dai[] = {
 	{
 	.name = "max9867-aif1",
 	.playback = {
 		.stream_name = "HiFi Playback",
 		.channels_min = 2,
 		.channels_max = 2,
 		.rates = MAX9867_RATES,
 		.formats = MAX9867_FORMATS,
 	},
 	.capture = {
 		.stream_name = "HiFi Capture",
 		.channels_min = 2,
 		.channels_max = 2,
 		.rates = MAX9867_RATES,
 		.formats = MAX9867_FORMATS,
 	},
 	.ops = &max9867_dai_ops,
 	.symmetric_rates = 1,
 	}
 };

 #ifdef CONFIG_PM
 static int max9867_suspend(struct snd_soc_component *component)
 {
 	snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF);

 	return 0;
 }

 static int max9867_resume(struct snd_soc_component *component)
 {
 	snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);

 	return 0;
 }
 #else
 #define max9867_suspend	NULL
 #define max9867_resume	NULL
 #endif

 static int max9867_set_bias_level(struct snd_soc_component *component,
 				  enum snd_soc_bias_level level)
 {
 	int err;
 	struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);

 	switch (level) {
 	case SND_SOC_BIAS_STANDBY:
 		if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
 			err = regcache_sync(max9867->regmap);
 			if (err)
 				return err;

 			err = regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
 						 MAX9867_SHTDOWN, MAX9867_SHTDOWN);
 			if (err)
 				return err;
 		}
 		break;
 	case SND_SOC_BIAS_OFF:
 		err = regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
 					 MAX9867_SHTDOWN, 0);
 		if (err)
 			return err;

 		regcache_mark_dirty(max9867->regmap);
 		break;
 	default:
 		break;
 	}

 	return 0;
 }

 static const struct snd_soc_component_driver max9867_component = {
 	.controls		= max9867_snd_controls,
 	.num_controls		= ARRAY_SIZE(max9867_snd_controls),
 	.dapm_routes		= max9867_audio_map,
 	.num_dapm_routes	= ARRAY_SIZE(max9867_audio_map),
 	.dapm_widgets		= max9867_dapm_widgets,
 	.num_dapm_widgets	= ARRAY_SIZE(max9867_dapm_widgets),
 	.suspend		= max9867_suspend,
 	.resume			= max9867_resume,
 	.set_bias_level		= max9867_set_bias_level,
 	.idle_bias_on		= 1,
 	.use_pmdown_time	= 1,
 	.endianness		= 1,
 	.non_legacy_dai_naming	= 1,
 };

 static bool max9867_volatile_register(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case MAX9867_STATUS:
 	case MAX9867_JACKSTATUS:
 	case MAX9867_AUXHIGH:
 	case MAX9867_AUXLOW:
 		return true;
 	default:
 		return false;
 	}
 }

 static const struct reg_default max9867_reg[] = {
 	{ 0x04, 0x00 },
 	{ 0x05, 0x00 },
 	{ 0x06, 0x00 },
 	{ 0x07, 0x00 },
 	{ 0x08, 0x00 },
 	{ 0x09, 0x00 },
 	{ 0x0A, 0x00 },
 	{ 0x0B, 0x00 },
 	{ 0x0C, 0x00 },
 	{ 0x0D, 0x00 },
 	{ 0x0E, 0x00 },
 	{ 0x0F, 0x00 },
 	{ 0x10, 0x00 },
 	{ 0x11, 0x00 },
 	{ 0x12, 0x00 },
 	{ 0x13, 0x00 },
 	{ 0x14, 0x00 },
 	{ 0x15, 0x00 },
 	{ 0x16, 0x00 },
 	{ 0x17, 0x00 },
 };

 static const struct regmap_config max9867_regmap = {
 	.reg_bits	= 8,
 	.val_bits	= 8,
 	.max_register	= MAX9867_REVISION,
 	.reg_defaults	= max9867_reg,
 	.num_reg_defaults = ARRAY_SIZE(max9867_reg),
 	.volatile_reg	= max9867_volatile_register,
 	.cache_type	= REGCACHE_RBTREE,
 };

 static int max9867_i2c_probe(struct i2c_client *i2c,
 		const struct i2c_device_id *id)
 {
 	struct max9867_priv *max9867;
 	int ret = 0, reg;

 	max9867 = devm_kzalloc(&i2c->dev,
 			sizeof(*max9867), GFP_KERNEL);
 	if (!max9867)
 		return -ENOMEM;

 	i2c_set_clientdata(i2c, max9867);
 	max9867->regmap = devm_regmap_init_i2c(i2c, &max9867_regmap);
 	if (IS_ERR(max9867->regmap)) {
 		ret = PTR_ERR(max9867->regmap);
 		dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
 		return ret;
 	}
 	ret = regmap_read(max9867->regmap,
 			MAX9867_REVISION, &reg);
 	if (ret < 0) {
 		dev_err(&i2c->dev, "Failed to read: %d\n", ret);
 		return ret;
 	}
 	dev_info(&i2c->dev, "device revision: %x\n", reg);
 	ret = devm_snd_soc_register_component(&i2c->dev, &max9867_component,
 			max9867_dai, ARRAY_SIZE(max9867_dai));
 	if (ret < 0) {
 		dev_err(&i2c->dev, "Failed to register component: %d\n", ret);
 		return ret;
 	}
 	return ret;
 }

 static const struct i2c_device_id max9867_i2c_id[] = {
 	{ "max9867", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, max9867_i2c_id);

 static const struct of_device_id max9867_of_match[] = {
 	{ .compatible = "maxim,max9867", },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, max9867_of_match);

 static struct i2c_driver max9867_i2c_driver = {
 	.driver = {
 		.name = "max9867",
 		.of_match_table = of_match_ptr(max9867_of_match),
 	},
 	.probe  = max9867_i2c_probe,
 	.id_table = max9867_i2c_id,
 };

 module_i2c_driver(max9867_i2c_driver);

 MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>");
 MODULE_DESCRIPTION("ALSA SoC MAX9867 driver");
 MODULE_LICENSE("GPL");
	/*
	* max9867.c -- max9867 ALSA SoC Audio driver
	*
	* Copyright 2013-15 Maxim Integrated Products
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*/

	#include <linux/delay.h>
	#include <linux/i2c.h>
	#include <linux/module.h>
	#include <linux/regmap.h>
	#include <sound/pcm_params.h>
	#include <sound/soc.h>
	#include <sound/tlv.h>
	#include "max9867.h"

	static const char *const max9867_spmode[] = {
	"Stereo Diff", "Mono Diff",
	"Stereo Cap", "Mono Cap",
	"Stereo Single", "Mono Single",
	"Stereo Single Fast", "Mono Single Fast"
	};
	static const char *const max9867_sidetone_text[] = {
	"None", "Left", "Right", "LeftRight", "LeftRightDiv2",
	};
	static const char *const max9867_filter_text[] = {"IIR", "FIR"};

	static SOC_ENUM_SINGLE_DECL(max9867_filter, MAX9867_CODECFLTR, 7,
	max9867_filter_text);
	static SOC_ENUM_SINGLE_DECL(max9867_spkmode, MAX9867_MODECONFIG, 0,
	max9867_spmode);
	static SOC_ENUM_SINGLE_DECL(max9867_sidetone, MAX9867_DACGAIN, 6,
	max9867_sidetone_text);
	static DECLARE_TLV_DB_SCALE(max9860_capture_tlv, -600, 200, 0);
	static DECLARE_TLV_DB_SCALE(max9860_mic_tlv, 2000, 100, 1);
	static DECLARE_TLV_DB_SCALE(max9860_adc_left_tlv, -1200, 100, 1);
	static DECLARE_TLV_DB_SCALE(max9860_adc_right_tlv, -1200, 100, 1);
	static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max98088_micboost_tlv,
	0, 1, TLV_DB_SCALE_ITEM(0, 2000, 0),
	2, 2, TLV_DB_SCALE_ITEM(3000, 0, 0),
	);

	static const struct snd_kcontrol_new max9867_snd_controls[] = {
	SOC_DOUBLE_R("Master Playback Volume", MAX9867_LEFTVOL,
	MAX9867_RIGHTVOL, 0, 63, 1),
	SOC_DOUBLE_R_TLV("Capture Volume", MAX9867_LEFTMICGAIN,
	MAX9867_RIGHTMICGAIN,
	0, 15, 1, max9860_capture_tlv),
	SOC_DOUBLE_R_TLV("Mic Volume", MAX9867_LEFTMICGAIN,
	MAX9867_RIGHTMICGAIN, 0, 31, 1, max9860_mic_tlv),
	SOC_DOUBLE_R_TLV("Mic Boost Volume", MAX9867_LEFTMICGAIN,
	MAX9867_RIGHTMICGAIN, 5, 3, 0, max98088_micboost_tlv),
	SOC_ENUM("Digital Sidetone Src", max9867_sidetone),
	SOC_SINGLE("Sidetone Volume", MAX9867_DACGAIN, 0, 31, 1),
	SOC_SINGLE("DAC Volume", MAX9867_DACLEVEL, 4, 3, 0),
	SOC_SINGLE("DAC Attenuation", MAX9867_DACLEVEL, 0, 15, 1),
	SOC_SINGLE_TLV("ADC Left Volume", MAX9867_ADCLEVEL,
	4, 15, 1, max9860_adc_left_tlv),
	SOC_SINGLE_TLV("ADC Right Volume", MAX9867_ADCLEVEL,
	0, 15, 1, max9860_adc_right_tlv),
	SOC_ENUM("Speaker Mode", max9867_spkmode),
	SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0),
	SOC_SINGLE("ZCD Switch", MAX9867_MODECONFIG, 5, 1, 0),
	SOC_ENUM("DSP Filter", max9867_filter),
	};

	static const char *const max9867_mux[] = {"None", "Mic", "Line", "Mic_Line"};

	static SOC_ENUM_SINGLE_DECL(max9867_mux_enum,
	MAX9867_INPUTCONFIG, MAX9867_INPUT_SHIFT,
	max9867_mux);

	static const struct snd_kcontrol_new max9867_dapm_mux_controls =
	SOC_DAPM_ENUM("Route", max9867_mux_enum);

	static const struct snd_kcontrol_new max9867_left_dapm_control =
	SOC_DAPM_SINGLE("Switch", MAX9867_PWRMAN, 6, 1, 0);
	static const struct snd_kcontrol_new max9867_right_dapm_control =
	SOC_DAPM_SINGLE("Switch", MAX9867_PWRMAN, 5, 1, 0);
	static const struct snd_kcontrol_new max9867_line_dapm_control =
	SOC_DAPM_SINGLE("Switch", MAX9867_LEFTLINELVL, 6, 1, 1);

	static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = {
	SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_DAC("Left DAC", NULL, MAX9867_PWRMAN, 3, 0),
	SND_SOC_DAPM_DAC("Right DAC", NULL, MAX9867_PWRMAN, 2, 0),
	SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_OUTPUT("HPOUT"),

	SND_SOC_DAPM_AIF_IN("DAI_IN", "HiFi Capture", 0, SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_ADC("Left ADC", "HiFi Capture", MAX9867_PWRMAN, 1, 0),
	SND_SOC_DAPM_ADC("Right ADC", "HiFi Capture", MAX9867_PWRMAN, 0, 0),
	SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
	&max9867_dapm_mux_controls),

	SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_SWITCH("Left Line", MAX9867_LEFTLINELVL, 6, 1,
	&max9867_left_dapm_control),
	SND_SOC_DAPM_SWITCH("Right Line", MAX9867_RIGTHLINELVL, 6, 1,
	&max9867_right_dapm_control),
	SND_SOC_DAPM_SWITCH("Line Mixer", SND_SOC_NOPM, 0, 0,
	&max9867_line_dapm_control),
	SND_SOC_DAPM_INPUT("LINE_IN"),
	};

	static const struct snd_soc_dapm_route max9867_audio_map[] = {
	{"Left DAC", NULL, "DAI_OUT"},
	{"Right DAC", NULL, "DAI_OUT"},
	{"Output Mixer", NULL, "Left DAC"},
	{"Output Mixer", NULL, "Right DAC"},
	{"HPOUT", NULL, "Output Mixer"},

	{"Left ADC", NULL, "DAI_IN"},
	{"Right ADC", NULL, "DAI_IN"},
	{"Input Mixer", NULL, "Left ADC"},
	{"Input Mixer", NULL, "Right ADC"},
	{"Input Mux", "Line", "Input Mixer"},
	{"Input Mux", "Mic", "Input Mixer"},
	{"Input Mux", "Mic_Line", "Input Mixer"},
	{"Right Line", "Switch", "Input Mux"},
	{"Left Line", "Switch", "Input Mux"},
	{"LINE_IN", NULL, "Left Line"},
	{"LINE_IN", NULL, "Right Line"},
	};

	enum rates {
	pcm_rate_8, pcm_rate_16, pcm_rate_24,
	pcm_rate_32, pcm_rate_44,
	pcm_rate_48, max_pcm_rate,
	};

	static const struct ni_div_rates {
	u32 mclk;
	u16 ni[max_pcm_rate];
	} ni_div[] = {
	{11289600, {0x116A, 0x22D4, 0x343F, 0x45A9, 0x6000, 0x687D} },
	{12000000, {0x1062, 0x20C5, 0x3127, 0x4189, 0x5A51, 0x624E} },
	{12288000, {0x1000, 0x2000, 0x3000, 0x4000, 0x5833, 0x6000} },
	{13000000, {0x0F20, 0x1E3F, 0x2D5F, 0x3C7F, 0x535F, 0x5ABE} },
	{19200000, {0x0A3D, 0x147B, 0x1EB8, 0x28F6, 0x3873, 0x3D71} },
	{24000000, {0x1062, 0x20C5, 0x1893, 0x4189, 0x5A51, 0x624E} },
	{26000000, {0x0F20, 0x1E3F, 0x16AF, 0x3C7F, 0x535F, 0x5ABE} },
	{27000000, {0x0E90, 0x1D21, 0x15D8, 0x3A41, 0x5048, 0x5762} },
	};

	static inline int get_ni_value(int mclk, int rate)
	{
	int i, ret = 0;

	/* find the closest rate index*/
	for (i = 0; i < ARRAY_SIZE(ni_div); i++) {
	if (ni_div[i].mclk >= mclk)
	break;
	}
	if (i == ARRAY_SIZE(ni_div))
	return -EINVAL;

	switch (rate) {
	case 8000:
	return ni_div[i].ni[pcm_rate_8];
	case 16000:
	return ni_div[i].ni[pcm_rate_16];
	case 32000:
	return ni_div[i].ni[pcm_rate_32];
	case 44100:
	return ni_div[i].ni[pcm_rate_44];
	case 48000:
	return ni_div[i].ni[pcm_rate_48];
	default:
	pr_err("%s wrong rate %d\n", __func__, rate);
	ret = -EINVAL;
	}
	return ret;
	}

	static int max9867_dai_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 max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
	unsigned int ni_h, ni_l;
	int value;

	value = get_ni_value(max9867->sysclk, params_rate(params));
	if (value < 0)
	return value;

	ni_h = (0xFF00 & value) >> 8;
	ni_l = 0x00FF & value;
	/* set up the ni value */
	regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
	MAX9867_NI_HIGH_MASK, ni_h);
	regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
	MAX9867_NI_LOW_MASK, ni_l);
	if (!max9867->master) {
	/*
	* digital pll locks on to any externally supplied LRCLK signal
	* and also enable rapid lock mode.
	*/
	regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
	MAX9867_RAPID_LOCK, MAX9867_RAPID_LOCK);
	regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
	MAX9867_PLL, MAX9867_PLL);
	} else {
	unsigned long int bclk_rate, pclk_bclk_ratio;
	int bclk_value;

	bclk_rate = params_rate(params) * 2 * params_width(params);
	pclk_bclk_ratio = max9867->pclk/bclk_rate;
	switch (params_width(params)) {
	case 8:
	case 16:
	switch (pclk_bclk_ratio) {
	case 2:
	bclk_value = MAX9867_IFC1B_PCLK_2;
	break;
	case 4:
	bclk_value = MAX9867_IFC1B_PCLK_4;
	break;
	case 8:
	bclk_value = MAX9867_IFC1B_PCLK_8;
	break;
	case 16:
	bclk_value = MAX9867_IFC1B_PCLK_16;
	break;
	default:
	dev_err(component->dev,
	"unsupported sampling rate\n");
	return -EINVAL;
	}
	break;
	case 24:
	bclk_value = MAX9867_IFC1B_24BIT;
	break;
	case 32:
	bclk_value = MAX9867_IFC1B_32BIT;
	break;
	default:
	dev_err(component->dev, "unsupported sampling rate\n");
	return -EINVAL;
	}
	regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
	MAX9867_IFC1B_BCLK_MASK, bclk_value);
	}
	return 0;
	}

	static int max9867_mute(struct snd_soc_dai *dai, int mute)
	{
	struct snd_soc_component *component = dai->component;
	struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);

	if (mute)
	regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL,
	MAX9867_DAC_MUTE_MASK, MAX9867_DAC_MUTE_MASK);
	else
	regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL,
	MAX9867_DAC_MUTE_MASK, 0);
	return 0;
	}

	static int max9867_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	int clk_id, unsigned int freq, int dir)
	{
	struct snd_soc_component *component = codec_dai->component;
	struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
	int value = 0;

	/* Set the prescaler based on the master clock frequency*/
	if (freq >= 10000000 && freq <= 20000000) {
	value \|= MAX9867_PSCLK_10_20;
	max9867->pclk = freq;
	} else if (freq >= 20000000 && freq <= 40000000) {
	value \|= MAX9867_PSCLK_20_40;
	max9867->pclk = freq/2;
	} else if (freq >= 40000000 && freq <= 60000000) {
	value \|= MAX9867_PSCLK_40_60;
	max9867->pclk = freq/4;
	} else {
	dev_err(component->dev,
	"Invalid clock frequency %uHz (required 10-60MHz)\n",
	freq);
	return -EINVAL;
	}
	value = value << MAX9867_PSCLK_SHIFT;
	max9867->sysclk = freq;
	/* exact integer mode is not supported */
	value &= ~MAX9867_FREQ_MASK;
	regmap_update_bits(max9867->regmap, MAX9867_SYSCLK,
	MAX9867_PSCLK_MASK, value);
	return 0;
	}

	static int max9867_dai_set_fmt(struct snd_soc_dai *codec_dai,
	unsigned int fmt)
	{
	struct snd_soc_component *component = codec_dai->component;
	struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
	u8 iface1A = 0, iface1B = 0;

	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
	max9867->master = 1;
	iface1A \|= MAX9867_MASTER;
	break;
	case SND_SOC_DAIFMT_CBS_CFS:
	max9867->master = 0;
	iface1A &= ~MAX9867_MASTER;
	break;
	default:
	return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
	iface1A \|= MAX9867_I2S_DLY;
	break;
	case SND_SOC_DAIFMT_DSP_A:
	iface1A \|= MAX9867_TDM_MODE \| MAX9867_SDOUT_HIZ;
	break;
	default:
	return -EINVAL;
	}

	/* Clock inversion bits, BCI and WCI */
	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_NB_NF:
	break;
	case SND_SOC_DAIFMT_IB_IF:
	iface1A \|= MAX9867_WCI_MODE \| MAX9867_BCI_MODE;
	break;
	case SND_SOC_DAIFMT_IB_NF:
	iface1A \|= MAX9867_BCI_MODE;
	break;
	case SND_SOC_DAIFMT_NB_IF:
	iface1A \|= MAX9867_WCI_MODE;
	break;
	default:
	return -EINVAL;
	}

	regmap_write(max9867->regmap, MAX9867_IFC1A, iface1A);
	regmap_write(max9867->regmap, MAX9867_IFC1B, iface1B);
	return 0;
	}

	static const struct snd_soc_dai_ops max9867_dai_ops = {
	.set_fmt = max9867_dai_set_fmt,
	.set_sysclk = max9867_set_dai_sysclk,
	.digital_mute = max9867_mute,
	.hw_params = max9867_dai_hw_params,
	};

	#define MAX9867_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_16000 \|\
	SNDRV_PCM_RATE_32000 \| SNDRV_PCM_RATE_44100 \| SNDRV_PCM_RATE_48000)
	#define MAX9867_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)

	static struct snd_soc_dai_driver max9867_dai[] = {
	{
	.name = "max9867-aif1",
	.playback = {
	.stream_name = "HiFi Playback",
	.channels_min = 2,
	.channels_max = 2,
	.rates = MAX9867_RATES,
	.formats = MAX9867_FORMATS,
	},
	.capture = {
	.stream_name = "HiFi Capture",
	.channels_min = 2,
	.channels_max = 2,
	.rates = MAX9867_RATES,
	.formats = MAX9867_FORMATS,
	},
	.ops = &max9867_dai_ops,
	.symmetric_rates = 1,
	}
	};

	#ifdef CONFIG_PM
	static int max9867_suspend(struct snd_soc_component *component)
	{
	snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF);

	return 0;
	}

	static int max9867_resume(struct snd_soc_component *component)
	{
	snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);

	return 0;
	}
	#else
	#define max9867_suspend NULL
	#define max9867_resume NULL
	#endif

	static int max9867_set_bias_level(struct snd_soc_component *component,
	enum snd_soc_bias_level level)
	{
	int err;
	struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);

	switch (level) {
	case SND_SOC_BIAS_STANDBY:
	if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
	err = regcache_sync(max9867->regmap);
	if (err)
	return err;

	err = regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
	MAX9867_SHTDOWN, MAX9867_SHTDOWN);
	if (err)
	return err;
	}
	break;
	case SND_SOC_BIAS_OFF:
	err = regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
	MAX9867_SHTDOWN, 0);
	if (err)
	return err;

	regcache_mark_dirty(max9867->regmap);
	break;
	default:
	break;
	}

	return 0;
	}

	static const struct snd_soc_component_driver max9867_component = {
	.controls = max9867_snd_controls,
	.num_controls = ARRAY_SIZE(max9867_snd_controls),
	.dapm_routes = max9867_audio_map,
	.num_dapm_routes = ARRAY_SIZE(max9867_audio_map),
	.dapm_widgets = max9867_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(max9867_dapm_widgets),
	.suspend = max9867_suspend,
	.resume = max9867_resume,
	.set_bias_level = max9867_set_bias_level,
	.idle_bias_on = 1,
	.use_pmdown_time = 1,
	.endianness = 1,
	.non_legacy_dai_naming = 1,
	};

	static bool max9867_volatile_register(struct device *dev, unsigned int reg)
	{
	switch (reg) {
	case MAX9867_STATUS:
	case MAX9867_JACKSTATUS:
	case MAX9867_AUXHIGH:
	case MAX9867_AUXLOW:
	return true;
	default:
	return false;
	}
	}

	static const struct reg_default max9867_reg[] = {
	{ 0x04, 0x00 },
	{ 0x05, 0x00 },
	{ 0x06, 0x00 },
	{ 0x07, 0x00 },
	{ 0x08, 0x00 },
	{ 0x09, 0x00 },
	{ 0x0A, 0x00 },
	{ 0x0B, 0x00 },
	{ 0x0C, 0x00 },
	{ 0x0D, 0x00 },
	{ 0x0E, 0x00 },
	{ 0x0F, 0x00 },
	{ 0x10, 0x00 },
	{ 0x11, 0x00 },
	{ 0x12, 0x00 },
	{ 0x13, 0x00 },
	{ 0x14, 0x00 },
	{ 0x15, 0x00 },
	{ 0x16, 0x00 },
	{ 0x17, 0x00 },
	};

	static const struct regmap_config max9867_regmap = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = MAX9867_REVISION,
	.reg_defaults = max9867_reg,
	.num_reg_defaults = ARRAY_SIZE(max9867_reg),
	.volatile_reg = max9867_volatile_register,
	.cache_type = REGCACHE_RBTREE,
	};

	static int max9867_i2c_probe(struct i2c_client *i2c,
	const struct i2c_device_id *id)
	{
	struct max9867_priv *max9867;
	int ret = 0, reg;

	max9867 = devm_kzalloc(&i2c->dev,
	sizeof(*max9867), GFP_KERNEL);
	if (!max9867)
	return -ENOMEM;

	i2c_set_clientdata(i2c, max9867);
	max9867->regmap = devm_regmap_init_i2c(i2c, &max9867_regmap);
	if (IS_ERR(max9867->regmap)) {
	ret = PTR_ERR(max9867->regmap);
	dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
	return ret;
	}
	ret = regmap_read(max9867->regmap,
	MAX9867_REVISION, &reg);
	if (ret < 0) {
	dev_err(&i2c->dev, "Failed to read: %d\n", ret);
	return ret;
	}
	dev_info(&i2c->dev, "device revision: %x\n", reg);
	ret = devm_snd_soc_register_component(&i2c->dev, &max9867_component,
	max9867_dai, ARRAY_SIZE(max9867_dai));
	if (ret < 0) {
	dev_err(&i2c->dev, "Failed to register component: %d\n", ret);
	return ret;
	}
	return ret;
	}

	static const struct i2c_device_id max9867_i2c_id[] = {
	{ "max9867", 0 },
	{ }
	};
	MODULE_DEVICE_TABLE(i2c, max9867_i2c_id);

	static const struct of_device_id max9867_of_match[] = {
	{ .compatible = "maxim,max9867", },
	{ }
	};
	MODULE_DEVICE_TABLE(of, max9867_of_match);

	static struct i2c_driver max9867_i2c_driver = {
	.driver = {
	.name = "max9867",
	.of_match_table = of_match_ptr(max9867_of_match),
	},
	.probe = max9867_i2c_probe,
	.id_table = max9867_i2c_id,
	};

	module_i2c_driver(max9867_i2c_driver);

	MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>");
	MODULE_DESCRIPTION("ALSA SoC MAX9867 driver");
	MODULE_LICENSE("GPL");