[deliverable/linux.git] / sound / soc / codecs / cs42l51.c

/*
 * cs42l51.c
 *
 * ASoC Driver for Cirrus Logic CS42L51 codecs
 *
 * Copyright (c) 2010 Arnaud Patard <apatard@mandriva.com>
 *
 * Based on cs4270.c - Copyright (c) Freescale Semiconductor
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * For now:
 *  - Only I2C is support. Not SPI
 *  - master mode *NOT* supported
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/initval.h>
#include <sound/pcm_params.h>
#include <sound/pcm.h>
#include <linux/regmap.h>

#include "cs42l51.h"

enum master_slave_mode {
	MODE_SLAVE,
	MODE_SLAVE_AUTO,
	MODE_MASTER,
};

struct cs42l51_private {
	unsigned int mclk;
	unsigned int audio_mode;	/* The mode (I2S or left-justified) */
	enum master_slave_mode func;
};

#define CS42L51_FORMATS ( \
		SNDRV_PCM_FMTBIT_S16_LE  | SNDRV_PCM_FMTBIT_S16_BE  | \
		SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
		SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
		SNDRV_PCM_FMTBIT_S24_LE  | SNDRV_PCM_FMTBIT_S24_BE)

static int cs42l51_get_chan_mix(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
	unsigned long value = snd_soc_read(codec, CS42L51_PCM_MIXER)&3;

	switch (value) {
	default:
	case 0:
		ucontrol->value.integer.value[0] = 0;
		break;
	/* same value : (L+R)/2 and (R+L)/2 */
	case 1:
	case 2:
		ucontrol->value.integer.value[0] = 1;
		break;
	case 3:
		ucontrol->value.integer.value[0] = 2;
		break;
	}

	return 0;
}

#define CHAN_MIX_NORMAL	0x00
#define CHAN_MIX_BOTH	0x55
#define CHAN_MIX_SWAP	0xFF

static int cs42l51_set_chan_mix(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
	unsigned char val;

	switch (ucontrol->value.integer.value[0]) {
	default:
	case 0:
		val = CHAN_MIX_NORMAL;
		break;
	case 1:
		val = CHAN_MIX_BOTH;
		break;
	case 2:
		val = CHAN_MIX_SWAP;
		break;
	}

	snd_soc_write(codec, CS42L51_PCM_MIXER, val);

	return 1;
}

static const DECLARE_TLV_DB_SCALE(adc_pcm_tlv, -5150, 50, 0);
static const DECLARE_TLV_DB_SCALE(tone_tlv, -1050, 150, 0);

static const DECLARE_TLV_DB_SCALE(aout_tlv, -10200, 50, 0);

static const DECLARE_TLV_DB_SCALE(boost_tlv, 1600, 1600, 0);
static const char *chan_mix[] = {
	"L R",
	"L+R",
	"R L",
};

static SOC_ENUM_SINGLE_EXT_DECL(cs42l51_chan_mix, chan_mix);

static const struct snd_kcontrol_new cs42l51_snd_controls[] = {
	SOC_DOUBLE_R_SX_TLV("PCM Playback Volume",
			CS42L51_PCMA_VOL, CS42L51_PCMB_VOL,
			0, 0x19, 0x7F, adc_pcm_tlv),
	SOC_DOUBLE_R("PCM Playback Switch",
			CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, 7, 1, 1),
	SOC_DOUBLE_R_SX_TLV("Analog Playback Volume",
			CS42L51_AOUTA_VOL, CS42L51_AOUTB_VOL,
			0, 0x34, 0xE4, aout_tlv),
	SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume",
			CS42L51_ADCA_VOL, CS42L51_ADCB_VOL,
			0, 0x19, 0x7F, adc_pcm_tlv),
	SOC_DOUBLE_R("ADC Mixer Switch",
			CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, 7, 1, 1),
	SOC_SINGLE("Playback Deemphasis Switch", CS42L51_DAC_CTL, 3, 1, 0),
	SOC_SINGLE("Auto-Mute Switch", CS42L51_DAC_CTL, 2, 1, 0),
	SOC_SINGLE("Soft Ramp Switch", CS42L51_DAC_CTL, 1, 1, 0),
	SOC_SINGLE("Zero Cross Switch", CS42L51_DAC_CTL, 0, 0, 0),
	SOC_DOUBLE_TLV("Mic Boost Volume",
			CS42L51_MIC_CTL, 0, 1, 1, 0, boost_tlv),
	SOC_SINGLE_TLV("Bass Volume", CS42L51_TONE_CTL, 0, 0xf, 1, tone_tlv),
	SOC_SINGLE_TLV("Treble Volume", CS42L51_TONE_CTL, 4, 0xf, 1, tone_tlv),
	SOC_ENUM_EXT("PCM channel mixer",
			cs42l51_chan_mix,
			cs42l51_get_chan_mix, cs42l51_set_chan_mix),
};

/*
 * to power down, one must:
 * 1.) Enable the PDN bit
 * 2.) enable power-down for the select channels
 * 3.) disable the PDN bit.
 */
static int cs42l51_pdn_event(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *kcontrol, int event)
{
	switch (event) {
	case SND_SOC_DAPM_PRE_PMD:
		snd_soc_update_bits(w->codec, CS42L51_POWER_CTL1,
				    CS42L51_POWER_CTL1_PDN,
				    CS42L51_POWER_CTL1_PDN);
		break;
	default:
	case SND_SOC_DAPM_POST_PMD:
		snd_soc_update_bits(w->codec, CS42L51_POWER_CTL1,
				    CS42L51_POWER_CTL1_PDN, 0);
		break;
	}

	return 0;
}

static const char *cs42l51_dac_names[] = {"Direct PCM",
	"DSP PCM", "ADC"};
static SOC_ENUM_SINGLE_DECL(cs42l51_dac_mux_enum,
			    CS42L51_DAC_CTL, 6, cs42l51_dac_names);
static const struct snd_kcontrol_new cs42l51_dac_mux_controls =
	SOC_DAPM_ENUM("Route", cs42l51_dac_mux_enum);

static const char *cs42l51_adcl_names[] = {"AIN1 Left", "AIN2 Left",
	"MIC Left", "MIC+preamp Left"};
static SOC_ENUM_SINGLE_DECL(cs42l51_adcl_mux_enum,
			    CS42L51_ADC_INPUT, 4, cs42l51_adcl_names);
static const struct snd_kcontrol_new cs42l51_adcl_mux_controls =
	SOC_DAPM_ENUM("Route", cs42l51_adcl_mux_enum);

static const char *cs42l51_adcr_names[] = {"AIN1 Right", "AIN2 Right",
	"MIC Right", "MIC+preamp Right"};
static SOC_ENUM_SINGLE_DECL(cs42l51_adcr_mux_enum,
			    CS42L51_ADC_INPUT, 6, cs42l51_adcr_names);
static const struct snd_kcontrol_new cs42l51_adcr_mux_controls =
	SOC_DAPM_ENUM("Route", cs42l51_adcr_mux_enum);

static const struct snd_soc_dapm_widget cs42l51_dapm_widgets[] = {
	SND_SOC_DAPM_MICBIAS("Mic Bias", CS42L51_MIC_POWER_CTL, 1, 1),
	SND_SOC_DAPM_PGA_E("Left PGA", CS42L51_POWER_CTL1, 3, 1, NULL, 0,
		cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
	SND_SOC_DAPM_PGA_E("Right PGA", CS42L51_POWER_CTL1, 4, 1, NULL, 0,
		cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
	SND_SOC_DAPM_ADC_E("Left ADC", "Left HiFi Capture",
		CS42L51_POWER_CTL1, 1, 1,
		cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
	SND_SOC_DAPM_ADC_E("Right ADC", "Right HiFi Capture",
		CS42L51_POWER_CTL1, 2, 1,
		cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
	SND_SOC_DAPM_DAC_E("Left DAC", "Left HiFi Playback",
		CS42L51_POWER_CTL1, 5, 1,
		cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
	SND_SOC_DAPM_DAC_E("Right DAC", "Right HiFi Playback",
		CS42L51_POWER_CTL1, 6, 1,
		cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),

	/* analog/mic */
	SND_SOC_DAPM_INPUT("AIN1L"),
	SND_SOC_DAPM_INPUT("AIN1R"),
	SND_SOC_DAPM_INPUT("AIN2L"),
	SND_SOC_DAPM_INPUT("AIN2R"),
	SND_SOC_DAPM_INPUT("MICL"),
	SND_SOC_DAPM_INPUT("MICR"),

	SND_SOC_DAPM_MIXER("Mic Preamp Left",
		CS42L51_MIC_POWER_CTL, 2, 1, NULL, 0),
	SND_SOC_DAPM_MIXER("Mic Preamp Right",
		CS42L51_MIC_POWER_CTL, 3, 1, NULL, 0),

	/* HP */
	SND_SOC_DAPM_OUTPUT("HPL"),
	SND_SOC_DAPM_OUTPUT("HPR"),

	/* mux */
	SND_SOC_DAPM_MUX("DAC Mux", SND_SOC_NOPM, 0, 0,
		&cs42l51_dac_mux_controls),
	SND_SOC_DAPM_MUX("PGA-ADC Mux Left", SND_SOC_NOPM, 0, 0,
		&cs42l51_adcl_mux_controls),
	SND_SOC_DAPM_MUX("PGA-ADC Mux Right", SND_SOC_NOPM, 0, 0,
		&cs42l51_adcr_mux_controls),
};

static const struct snd_soc_dapm_route cs42l51_routes[] = {
	{"HPL", NULL, "Left DAC"},
	{"HPR", NULL, "Right DAC"},

	{"Left ADC", NULL, "Left PGA"},
	{"Right ADC", NULL, "Right PGA"},

	{"Mic Preamp Left",  NULL,  "MICL"},
	{"Mic Preamp Right", NULL,  "MICR"},

	{"PGA-ADC Mux Left",  "AIN1 Left",        "AIN1L" },
	{"PGA-ADC Mux Left",  "AIN2 Left",        "AIN2L" },
	{"PGA-ADC Mux Left",  "MIC Left",         "MICL"  },
	{"PGA-ADC Mux Left",  "MIC+preamp Left",  "Mic Preamp Left" },
	{"PGA-ADC Mux Right", "AIN1 Right",       "AIN1R" },
	{"PGA-ADC Mux Right", "AIN2 Right",       "AIN2R" },
	{"PGA-ADC Mux Right", "MIC Right",        "MICR" },
	{"PGA-ADC Mux Right", "MIC+preamp Right", "Mic Preamp Right" },

	{"Left PGA", NULL, "PGA-ADC Mux Left"},
	{"Right PGA", NULL, "PGA-ADC Mux Right"},
};

static int cs42l51_set_dai_fmt(struct snd_soc_dai *codec_dai,
		unsigned int format)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);

	switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
	case SND_SOC_DAIFMT_LEFT_J:
	case SND_SOC_DAIFMT_RIGHT_J:
		cs42l51->audio_mode = format & SND_SOC_DAIFMT_FORMAT_MASK;
		break;
	default:
		dev_err(codec->dev, "invalid DAI format\n");
		return -EINVAL;
	}

	switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
		cs42l51->func = MODE_MASTER;
		break;
	case SND_SOC_DAIFMT_CBS_CFS:
		cs42l51->func = MODE_SLAVE_AUTO;
		break;
	default:
		dev_err(codec->dev, "Unknown master/slave configuration\n");
		return -EINVAL;
	}

	return 0;
}

struct cs42l51_ratios {
	unsigned int ratio;
	unsigned char speed_mode;
	unsigned char mclk;
};

static struct cs42l51_ratios slave_ratios[] = {
	{  512, CS42L51_QSM_MODE, 0 }, {  768, CS42L51_QSM_MODE, 0 },
	{ 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
	{ 2048, CS42L51_QSM_MODE, 0 }, { 3072, CS42L51_QSM_MODE, 0 },
	{  256, CS42L51_HSM_MODE, 0 }, {  384, CS42L51_HSM_MODE, 0 },
	{  512, CS42L51_HSM_MODE, 0 }, {  768, CS42L51_HSM_MODE, 0 },
	{ 1024, CS42L51_HSM_MODE, 0 }, { 1536, CS42L51_HSM_MODE, 0 },
	{  128, CS42L51_SSM_MODE, 0 }, {  192, CS42L51_SSM_MODE, 0 },
	{  256, CS42L51_SSM_MODE, 0 }, {  384, CS42L51_SSM_MODE, 0 },
	{  512, CS42L51_SSM_MODE, 0 }, {  768, CS42L51_SSM_MODE, 0 },
	{  128, CS42L51_DSM_MODE, 0 }, {  192, CS42L51_DSM_MODE, 0 },
	{  256, CS42L51_DSM_MODE, 0 }, {  384, CS42L51_DSM_MODE, 0 },
};

static struct cs42l51_ratios slave_auto_ratios[] = {
	{ 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
	{ 2048, CS42L51_QSM_MODE, 1 }, { 3072, CS42L51_QSM_MODE, 1 },
	{  512, CS42L51_HSM_MODE, 0 }, {  768, CS42L51_HSM_MODE, 0 },
	{ 1024, CS42L51_HSM_MODE, 1 }, { 1536, CS42L51_HSM_MODE, 1 },
	{  256, CS42L51_SSM_MODE, 0 }, {  384, CS42L51_SSM_MODE, 0 },
	{  512, CS42L51_SSM_MODE, 1 }, {  768, CS42L51_SSM_MODE, 1 },
	{  128, CS42L51_DSM_MODE, 0 }, {  192, CS42L51_DSM_MODE, 0 },
	{  256, CS42L51_DSM_MODE, 1 }, {  384, CS42L51_DSM_MODE, 1 },
};

static int cs42l51_set_dai_sysclk(struct snd_soc_dai *codec_dai,
		int clk_id, unsigned int freq, int dir)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);

	cs42l51->mclk = freq;
	return 0;
}

static int cs42l51_hw_params(struct snd_pcm_substream *substream,
		struct snd_pcm_hw_params *params,
		struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
	int ret;
	unsigned int i;
	unsigned int rate;
	unsigned int ratio;
	struct cs42l51_ratios *ratios = NULL;
	int nr_ratios = 0;
	int intf_ctl, power_ctl, fmt;

	switch (cs42l51->func) {
	case MODE_MASTER:
		return -EINVAL;
	case MODE_SLAVE:
		ratios = slave_ratios;
		nr_ratios = ARRAY_SIZE(slave_ratios);
		break;
	case MODE_SLAVE_AUTO:
		ratios = slave_auto_ratios;
		nr_ratios = ARRAY_SIZE(slave_auto_ratios);
		break;
	}

	/* Figure out which MCLK/LRCK ratio to use */
	rate = params_rate(params);     /* Sampling rate, in Hz */
	ratio = cs42l51->mclk / rate;    /* MCLK/LRCK ratio */
	for (i = 0; i < nr_ratios; i++) {
		if (ratios[i].ratio == ratio)
			break;
	}

	if (i == nr_ratios) {
		/* We did not find a matching ratio */
		dev_err(codec->dev, "could not find matching ratio\n");
		return -EINVAL;
	}

	intf_ctl = snd_soc_read(codec, CS42L51_INTF_CTL);
	power_ctl = snd_soc_read(codec, CS42L51_MIC_POWER_CTL);

	intf_ctl &= ~(CS42L51_INTF_CTL_MASTER | CS42L51_INTF_CTL_ADC_I2S
			| CS42L51_INTF_CTL_DAC_FORMAT(7));
	power_ctl &= ~(CS42L51_MIC_POWER_CTL_SPEED(3)
			| CS42L51_MIC_POWER_CTL_MCLK_DIV2);

	switch (cs42l51->func) {
	case MODE_MASTER:
		intf_ctl |= CS42L51_INTF_CTL_MASTER;
		power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
		break;
	case MODE_SLAVE:
		power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
		break;
	case MODE_SLAVE_AUTO:
		power_ctl |= CS42L51_MIC_POWER_CTL_AUTO;
		break;
	}

	switch (cs42l51->audio_mode) {
	case SND_SOC_DAIFMT_I2S:
		intf_ctl |= CS42L51_INTF_CTL_ADC_I2S;
		intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_I2S);
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_LJ24);
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		switch (params_width(params)) {
		case 16:
			fmt = CS42L51_DAC_DIF_RJ16;
			break;
		case 18:
			fmt = CS42L51_DAC_DIF_RJ18;
			break;
		case 20:
			fmt = CS42L51_DAC_DIF_RJ20;
			break;
		case 24:
			fmt = CS42L51_DAC_DIF_RJ24;
			break;
		default:
			dev_err(codec->dev, "unknown format\n");
			return -EINVAL;
		}
		intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(fmt);
		break;
	default:
		dev_err(codec->dev, "unknown format\n");
		return -EINVAL;
	}

	if (ratios[i].mclk)
		power_ctl |= CS42L51_MIC_POWER_CTL_MCLK_DIV2;

	ret = snd_soc_write(codec, CS42L51_INTF_CTL, intf_ctl);
	if (ret < 0)
		return ret;

	ret = snd_soc_write(codec, CS42L51_MIC_POWER_CTL, power_ctl);
	if (ret < 0)
		return ret;

	return 0;
}

static int cs42l51_dai_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;
	int reg;
	int mask = CS42L51_DAC_OUT_CTL_DACA_MUTE|CS42L51_DAC_OUT_CTL_DACB_MUTE;

	reg = snd_soc_read(codec, CS42L51_DAC_OUT_CTL);

	if (mute)
		reg |= mask;
	else
		reg &= ~mask;

	return snd_soc_write(codec, CS42L51_DAC_OUT_CTL, reg);
}

static const struct snd_soc_dai_ops cs42l51_dai_ops = {
	.hw_params      = cs42l51_hw_params,
	.set_sysclk     = cs42l51_set_dai_sysclk,
	.set_fmt        = cs42l51_set_dai_fmt,
	.digital_mute   = cs42l51_dai_mute,
};

static struct snd_soc_dai_driver cs42l51_dai = {
	.name = "cs42l51-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 1,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_96000,
		.formats = CS42L51_FORMATS,
	},
	.capture = {
		.stream_name = "Capture",
		.channels_min = 1,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_96000,
		.formats = CS42L51_FORMATS,
	},
	.ops = &cs42l51_dai_ops,
};

static int cs42l51_codec_probe(struct snd_soc_codec *codec)
{
	int ret, reg;

	/*
	 * DAC configuration
	 * - Use signal processor
	 * - auto mute
	 * - vol changes immediate
	 * - no de-emphasize
	 */
	reg = CS42L51_DAC_CTL_DATA_SEL(1)
		| CS42L51_DAC_CTL_AMUTE | CS42L51_DAC_CTL_DACSZ(0);
	ret = snd_soc_write(codec, CS42L51_DAC_CTL, reg);
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_codec_driver soc_codec_device_cs42l51 = {
	.probe = cs42l51_codec_probe,

	.controls = cs42l51_snd_controls,
	.num_controls = ARRAY_SIZE(cs42l51_snd_controls),
	.dapm_widgets = cs42l51_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(cs42l51_dapm_widgets),
	.dapm_routes = cs42l51_routes,
	.num_dapm_routes = ARRAY_SIZE(cs42l51_routes),
};

const struct regmap_config cs42l51_regmap = {
	.max_register = CS42L51_CHARGE_FREQ,
	.cache_type = REGCACHE_RBTREE,
};
EXPORT_SYMBOL_GPL(cs42l51_regmap);

int cs42l51_probe(struct device *dev, struct regmap *regmap)
{
	struct cs42l51_private *cs42l51;
	unsigned int val;
	int ret;

	if (IS_ERR(regmap))
		return PTR_ERR(regmap);

	cs42l51 = devm_kzalloc(dev, sizeof(struct cs42l51_private),
			       GFP_KERNEL);
	if (!cs42l51)
		return -ENOMEM;

	dev_set_drvdata(dev, cs42l51);

	/* Verify that we have a CS42L51 */
	ret = regmap_read(regmap, CS42L51_CHIP_REV_ID, &val);
	if (ret < 0) {
		dev_err(dev, "failed to read I2C\n");
		goto error;
	}

	if ((val != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_A)) &&
	    (val != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_B))) {
		dev_err(dev, "Invalid chip id: %x\n", val);
		ret = -ENODEV;
		goto error;
	}
	dev_info(dev, "Cirrus Logic CS42L51, Revision: %02X\n",
		 val & CS42L51_CHIP_REV_MASK);

	ret =  snd_soc_register_codec(dev,
			&soc_codec_device_cs42l51, &cs42l51_dai, 1);
error:
	return ret;
}
EXPORT_SYMBOL_GPL(cs42l51_probe);

static const struct of_device_id cs42l51_of_match[] = {
	{ .compatible = "cirrus,cs42l51", },
	{ }
};
MODULE_DEVICE_TABLE(of, cs42l51_of_match);
MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
72ed5a8c	1	/*
	2	* cs42l51.c
	3	*
	4	* ASoC Driver for Cirrus Logic CS42L51 codecs
	5	*
	6	* Copyright (c) 2010 Arnaud Patard <apatard@mandriva.com>
	7	*
	8	* Based on cs4270.c - Copyright (c) Freescale Semiconductor
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* For now:
	20	* - Only I2C is support. Not SPI
	21	* - master mode NOT supported
	22	*/
	23
	24	#include <linux/module.h>
72ed5a8c	25	#include <linux/slab.h>
	26	#include <sound/core.h>
	27	#include <sound/soc.h>
72ed5a8c	28	#include <sound/tlv.h>
	29	#include <sound/initval.h>
	30	#include <sound/pcm_params.h>
	31	#include <sound/pcm.h>
da071489	32	#include <linux/regmap.h>
72ed5a8c	33
	34	#include "cs42l51.h"
	35
	36	enum master_slave_mode {
	37	MODE_SLAVE,
	38	MODE_SLAVE_AUTO,
	39	MODE_MASTER,
	40	};
	41
	42	struct cs42l51_private {
	43	unsigned int mclk;
	44	unsigned int audio_mode; /* The mode (I2S or left-justified) */
	45	enum master_slave_mode func;
72ed5a8c	46	};
72ed5a8c	47
72ed5a8c	48	#define CS42L51_FORMATS ( \
	49	SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S16_BE \| \
	50	SNDRV_PCM_FMTBIT_S18_3LE \| SNDRV_PCM_FMTBIT_S18_3BE \| \
	51	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S20_3BE \| \
	52	SNDRV_PCM_FMTBIT_S24_LE \| SNDRV_PCM_FMTBIT_S24_BE)
	53
72ed5a8c	54	static int cs42l51_get_chan_mix(struct snd_kcontrol *kcontrol,
	55	struct snd_ctl_elem_value *ucontrol)
	56	{
ea53bf77	57	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
72ed5a8c	58	unsigned long value = snd_soc_read(codec, CS42L51_PCM_MIXER)&3;
	59
	60	switch (value) {
	61	default:
	62	case 0:
	63	ucontrol->value.integer.value[0] = 0;
	64	break;
	65	/* same value : (L+R)/2 and (R+L)/2 */
	66	case 1:
	67	case 2:
	68	ucontrol->value.integer.value[0] = 1;
	69	break;
	70	case 3:
	71	ucontrol->value.integer.value[0] = 2;
	72	break;
	73	}
	74
	75	return 0;
	76	}
	77
	78	#define CHAN_MIX_NORMAL 0x00
	79	#define CHAN_MIX_BOTH 0x55
	80	#define CHAN_MIX_SWAP 0xFF
	81
	82	static int cs42l51_set_chan_mix(struct snd_kcontrol *kcontrol,
	83	struct snd_ctl_elem_value *ucontrol)
	84	{
ea53bf77	85	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
72ed5a8c	86	unsigned char val;
	87
	88	switch (ucontrol->value.integer.value[0]) {
	89	default:
	90	case 0:
	91	val = CHAN_MIX_NORMAL;
	92	break;
	93	case 1:
	94	val = CHAN_MIX_BOTH;
	95	break;
	96	case 2:
	97	val = CHAN_MIX_SWAP;
	98	break;
	99	}
	100
	101	snd_soc_write(codec, CS42L51_PCM_MIXER, val);
	102
	103	return 1;
	104	}
	105
	106	static const DECLARE_TLV_DB_SCALE(adc_pcm_tlv, -5150, 50, 0);
	107	static const DECLARE_TLV_DB_SCALE(tone_tlv, -1050, 150, 0);
7272e051 BA	108
7272e051 BA	109	static const DECLARE_TLV_DB_SCALE(aout_tlv, -10200, 50, 0);
72ed5a8c	110
	111	static const DECLARE_TLV_DB_SCALE(boost_tlv, 1600, 1600, 0);
	112	static const char *chan_mix[] = {
	113	"L R",
	114	"L+R",
	115	"R L",
	116	};
	117
6109ab2b	118	static SOC_ENUM_SINGLE_EXT_DECL(cs42l51_chan_mix, chan_mix);
72ed5a8c	119
	120	static const struct snd_kcontrol_new cs42l51_snd_controls[] = {
	121	SOC_DOUBLE_R_SX_TLV("PCM Playback Volume",
	122	CS42L51_PCMA_VOL, CS42L51_PCMB_VOL,
7272e051	123	0, 0x19, 0x7F, adc_pcm_tlv),
72ed5a8c	124	SOC_DOUBLE_R("PCM Playback Switch",
	125	CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, 7, 1, 1),
	126	SOC_DOUBLE_R_SX_TLV("Analog Playback Volume",
	127	CS42L51_AOUTA_VOL, CS42L51_AOUTB_VOL,
1d99f243	128	0, 0x34, 0xE4, aout_tlv),
72ed5a8c	129	SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume",
72ed5a8c	130	CS42L51_ADCA_VOL, CS42L51_ADCB_VOL,
7272e051	131	0, 0x19, 0x7F, adc_pcm_tlv),
72ed5a8c	132	SOC_DOUBLE_R("ADC Mixer Switch",
	133	CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, 7, 1, 1),
	134	SOC_SINGLE("Playback Deemphasis Switch", CS42L51_DAC_CTL, 3, 1, 0),
	135	SOC_SINGLE("Auto-Mute Switch", CS42L51_DAC_CTL, 2, 1, 0),
	136	SOC_SINGLE("Soft Ramp Switch", CS42L51_DAC_CTL, 1, 1, 0),
	137	SOC_SINGLE("Zero Cross Switch", CS42L51_DAC_CTL, 0, 0, 0),
	138	SOC_DOUBLE_TLV("Mic Boost Volume",
	139	CS42L51_MIC_CTL, 0, 1, 1, 0, boost_tlv),
	140	SOC_SINGLE_TLV("Bass Volume", CS42L51_TONE_CTL, 0, 0xf, 1, tone_tlv),
	141	SOC_SINGLE_TLV("Treble Volume", CS42L51_TONE_CTL, 4, 0xf, 1, tone_tlv),
	142	SOC_ENUM_EXT("PCM channel mixer",
	143	cs42l51_chan_mix,
	144	cs42l51_get_chan_mix, cs42l51_set_chan_mix),
	145	};
	146
	147	/*
	148	* to power down, one must:
	149	* 1.) Enable the PDN bit
	150	* 2.) enable power-down for the select channels
	151	* 3.) disable the PDN bit.
	152	*/
	153	static int cs42l51_pdn_event(struct snd_soc_dapm_widget *w,
	154	struct snd_kcontrol *kcontrol, int event)
	155	{
72ed5a8c	156	switch (event) {
72ed5a8c	157	case SND_SOC_DAPM_PRE_PMD:
e94de1e8 AL	158	snd_soc_update_bits(w->codec, CS42L51_POWER_CTL1,
	159	CS42L51_POWER_CTL1_PDN,
	160	CS42L51_POWER_CTL1_PDN);
72ed5a8c	161	break;
	162	default:
	163	case SND_SOC_DAPM_POST_PMD:
e94de1e8 AL	164	snd_soc_update_bits(w->codec, CS42L51_POWER_CTL1,
e94de1e8 AL	165	CS42L51_POWER_CTL1_PDN, 0);
72ed5a8c	166	break;
72ed5a8c	167	}
72ed5a8c	168
	169	return 0;
	170	}
	171
	172	static const char *cs42l51_dac_names[] = {"Direct PCM",
	173	"DSP PCM", "ADC"};
6109ab2b TI	174	static SOC_ENUM_SINGLE_DECL(cs42l51_dac_mux_enum,
6109ab2b TI	175	CS42L51_DAC_CTL, 6, cs42l51_dac_names);
72ed5a8c	176	static const struct snd_kcontrol_new cs42l51_dac_mux_controls =
	177	SOC_DAPM_ENUM("Route", cs42l51_dac_mux_enum);
	178
	179	static const char *cs42l51_adcl_names[] = {"AIN1 Left", "AIN2 Left",
	180	"MIC Left", "MIC+preamp Left"};
6109ab2b TI	181	static SOC_ENUM_SINGLE_DECL(cs42l51_adcl_mux_enum,
6109ab2b TI	182	CS42L51_ADC_INPUT, 4, cs42l51_adcl_names);
72ed5a8c	183	static const struct snd_kcontrol_new cs42l51_adcl_mux_controls =
	184	SOC_DAPM_ENUM("Route", cs42l51_adcl_mux_enum);
	185
	186	static const char *cs42l51_adcr_names[] = {"AIN1 Right", "AIN2 Right",
	187	"MIC Right", "MIC+preamp Right"};
6109ab2b TI	188	static SOC_ENUM_SINGLE_DECL(cs42l51_adcr_mux_enum,
6109ab2b TI	189	CS42L51_ADC_INPUT, 6, cs42l51_adcr_names);
72ed5a8c	190	static const struct snd_kcontrol_new cs42l51_adcr_mux_controls =
	191	SOC_DAPM_ENUM("Route", cs42l51_adcr_mux_enum);
	192
	193	static const struct snd_soc_dapm_widget cs42l51_dapm_widgets[] = {
	194	SND_SOC_DAPM_MICBIAS("Mic Bias", CS42L51_MIC_POWER_CTL, 1, 1),
	195	SND_SOC_DAPM_PGA_E("Left PGA", CS42L51_POWER_CTL1, 3, 1, NULL, 0,
	196	cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
	197	SND_SOC_DAPM_PGA_E("Right PGA", CS42L51_POWER_CTL1, 4, 1, NULL, 0,
	198	cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
	199	SND_SOC_DAPM_ADC_E("Left ADC", "Left HiFi Capture",
	200	CS42L51_POWER_CTL1, 1, 1,
	201	cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
	202	SND_SOC_DAPM_ADC_E("Right ADC", "Right HiFi Capture",
	203	CS42L51_POWER_CTL1, 2, 1,
	204	cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
	205	SND_SOC_DAPM_DAC_E("Left DAC", "Left HiFi Playback",
	206	CS42L51_POWER_CTL1, 5, 1,
	207	cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
	208	SND_SOC_DAPM_DAC_E("Right DAC", "Right HiFi Playback",
	209	CS42L51_POWER_CTL1, 6, 1,
	210	cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
	211
	212	/* analog/mic */
	213	SND_SOC_DAPM_INPUT("AIN1L"),
	214	SND_SOC_DAPM_INPUT("AIN1R"),
	215	SND_SOC_DAPM_INPUT("AIN2L"),
	216	SND_SOC_DAPM_INPUT("AIN2R"),
	217	SND_SOC_DAPM_INPUT("MICL"),
	218	SND_SOC_DAPM_INPUT("MICR"),
	219
	220	SND_SOC_DAPM_MIXER("Mic Preamp Left",
	221	CS42L51_MIC_POWER_CTL, 2, 1, NULL, 0),
	222	SND_SOC_DAPM_MIXER("Mic Preamp Right",
	223	CS42L51_MIC_POWER_CTL, 3, 1, NULL, 0),
	224
	225	/* HP */
	226	SND_SOC_DAPM_OUTPUT("HPL"),
	227	SND_SOC_DAPM_OUTPUT("HPR"),
	228
	229	/* mux */
	230	SND_SOC_DAPM_MUX("DAC Mux", SND_SOC_NOPM, 0, 0,
	231	&cs42l51_dac_mux_controls),
	232	SND_SOC_DAPM_MUX("PGA-ADC Mux Left", SND_SOC_NOPM, 0, 0,
	233	&cs42l51_adcl_mux_controls),
	234	SND_SOC_DAPM_MUX("PGA-ADC Mux Right", SND_SOC_NOPM, 0, 0,
	235	&cs42l51_adcr_mux_controls),
	236	};
	237
	238	static const struct snd_soc_dapm_route cs42l51_routes[] = {
	239	{"HPL", NULL, "Left DAC"},
	240	{"HPR", NULL, "Right DAC"},
	241
	242	{"Left ADC", NULL, "Left PGA"},
	243	{"Right ADC", NULL, "Right PGA"},
	244
	245	{"Mic Preamp Left", NULL, "MICL"},
	246	{"Mic Preamp Right", NULL, "MICR"},
	247
	248	{"PGA-ADC Mux Left", "AIN1 Left", "AIN1L" },
	249	{"PGA-ADC Mux Left", "AIN2 Left", "AIN2L" },
	250	{"PGA-ADC Mux Left", "MIC Left", "MICL" },
	251	{"PGA-ADC Mux Left", "MIC+preamp Left", "Mic Preamp Left" },
	252	{"PGA-ADC Mux Right", "AIN1 Right", "AIN1R" },
	253	{"PGA-ADC Mux Right", "AIN2 Right", "AIN2R" },
254	{"PGA-ADC Mux Right", "MIC Right", "MICR" },
255	{"PGA-ADC Mux Right", "MIC+preamp Right", "Mic Preamp Right" },
256
257	{"Left PGA", NULL, "PGA-ADC Mux Left"},
258	{"Right PGA", NULL, "PGA-ADC Mux Right"},
259	};
260
261	static int cs42l51_set_dai_fmt(struct snd_soc_dai *codec_dai,
262	unsigned int format)
263	{
264	struct snd_soc_codec *codec = codec_dai->codec;
265	struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
72ed5a8c	266
	267	switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
	268	case SND_SOC_DAIFMT_I2S:
	269	case SND_SOC_DAIFMT_LEFT_J:
	270	case SND_SOC_DAIFMT_RIGHT_J:
	271	cs42l51->audio_mode = format & SND_SOC_DAIFMT_FORMAT_MASK;
	272	break;
	273	default:
	274	dev_err(codec->dev, "invalid DAI format\n");
ac60155f	275	return -EINVAL;
72ed5a8c	276	}
	277
	278	switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
	279	case SND_SOC_DAIFMT_CBM_CFM:
	280	cs42l51->func = MODE_MASTER;
	281	break;
	282	case SND_SOC_DAIFMT_CBS_CFS:
	283	cs42l51->func = MODE_SLAVE_AUTO;
	284	break;
	285	default:
ac60155f AL	286	dev_err(codec->dev, "Unknown master/slave configuration\n");
ac60155f AL	287	return -EINVAL;
72ed5a8c	288	}
72ed5a8c	289
ac60155f	290	return 0;
72ed5a8c	291	}
	292
	293	struct cs42l51_ratios {
	294	unsigned int ratio;
	295	unsigned char speed_mode;
	296	unsigned char mclk;
	297	};
	298
	299	static struct cs42l51_ratios slave_ratios[] = {
	300	{ 512, CS42L51_QSM_MODE, 0 }, { 768, CS42L51_QSM_MODE, 0 },
	301	{ 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
	302	{ 2048, CS42L51_QSM_MODE, 0 }, { 3072, CS42L51_QSM_MODE, 0 },
	303	{ 256, CS42L51_HSM_MODE, 0 }, { 384, CS42L51_HSM_MODE, 0 },
	304	{ 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 },
	305	{ 1024, CS42L51_HSM_MODE, 0 }, { 1536, CS42L51_HSM_MODE, 0 },
	306	{ 128, CS42L51_SSM_MODE, 0 }, { 192, CS42L51_SSM_MODE, 0 },
	307	{ 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 },
	308	{ 512, CS42L51_SSM_MODE, 0 }, { 768, CS42L51_SSM_MODE, 0 },
	309	{ 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 },
	310	{ 256, CS42L51_DSM_MODE, 0 }, { 384, CS42L51_DSM_MODE, 0 },
	311	};
	312
	313	static struct cs42l51_ratios slave_auto_ratios[] = {
	314	{ 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
	315	{ 2048, CS42L51_QSM_MODE, 1 }, { 3072, CS42L51_QSM_MODE, 1 },
	316	{ 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 },
	317	{ 1024, CS42L51_HSM_MODE, 1 }, { 1536, CS42L51_HSM_MODE, 1 },
	318	{ 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 },
	319	{ 512, CS42L51_SSM_MODE, 1 }, { 768, CS42L51_SSM_MODE, 1 },
	320	{ 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 },
	321	{ 256, CS42L51_DSM_MODE, 1 }, { 384, CS42L51_DSM_MODE, 1 },
	322	};
	323
	324	static int cs42l51_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	325	int clk_id, unsigned int freq, int dir)
	326	{
	327	struct snd_soc_codec *codec = codec_dai->codec;
	328	struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
72ed5a8c	329
72ed5a8c	330	cs42l51->mclk = freq;
72ed5a8c	331	return 0;
	332	}
	333
	334	static int cs42l51_hw_params(struct snd_pcm_substream *substream,
	335	struct snd_pcm_hw_params *params,
	336	struct snd_soc_dai *dai)
	337	{
e6968a17	338	struct snd_soc_codec *codec = dai->codec;
72ed5a8c	339	struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
	340	int ret;
	341	unsigned int i;
	342	unsigned int rate;
	343	unsigned int ratio;
	344	struct cs42l51_ratios *ratios = NULL;
	345	int nr_ratios = 0;
	346	int intf_ctl, power_ctl, fmt;
	347
	348	switch (cs42l51->func) {
	349	case MODE_MASTER:
	350	return -EINVAL;
	351	case MODE_SLAVE:
	352	ratios = slave_ratios;
	353	nr_ratios = ARRAY_SIZE(slave_ratios);
	354	break;
	355	case MODE_SLAVE_AUTO:
	356	ratios = slave_auto_ratios;
	357	nr_ratios = ARRAY_SIZE(slave_auto_ratios);
	358	break;
	359	}
	360
	361	/* Figure out which MCLK/LRCK ratio to use */
	362	rate = params_rate(params); /* Sampling rate, in Hz */
	363	ratio = cs42l51->mclk / rate; /* MCLK/LRCK ratio */
	364	for (i = 0; i < nr_ratios; i++) {
	365	if (ratios[i].ratio == ratio)
	366	break;
	367	}
	368
	369	if (i == nr_ratios) {
	370	/* We did not find a matching ratio */
	371	dev_err(codec->dev, "could not find matching ratio\n");
	372	return -EINVAL;
	373	}
	374
	375	intf_ctl = snd_soc_read(codec, CS42L51_INTF_CTL);
	376	power_ctl = snd_soc_read(codec, CS42L51_MIC_POWER_CTL);
	377
	378	intf_ctl &= ~(CS42L51_INTF_CTL_MASTER \| CS42L51_INTF_CTL_ADC_I2S
	379	\| CS42L51_INTF_CTL_DAC_FORMAT(7));
	380	power_ctl &= ~(CS42L51_MIC_POWER_CTL_SPEED(3)
	381	\| CS42L51_MIC_POWER_CTL_MCLK_DIV2);
	382
	383	switch (cs42l51->func) {
	384	case MODE_MASTER:
	385	intf_ctl \|= CS42L51_INTF_CTL_MASTER;
	386	power_ctl \|= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
	387	break;
	388	case MODE_SLAVE:
	389	power_ctl \|= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
	390	break;
	391	case MODE_SLAVE_AUTO:
	392	power_ctl \|= CS42L51_MIC_POWER_CTL_AUTO;
	393	break;
	394	}
	395
	396	switch (cs42l51->audio_mode) {
	397	case SND_SOC_DAIFMT_I2S:
	398	intf_ctl \|= CS42L51_INTF_CTL_ADC_I2S;
	399	intf_ctl \|= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_I2S);
	400	break;
	401	case SND_SOC_DAIFMT_LEFT_J:
	402	intf_ctl \|= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_LJ24);
403	break;
404	case SND_SOC_DAIFMT_RIGHT_J:
1b6b0dfa MB	405	switch (params_width(params)) {
1b6b0dfa MB	406	case 16:
72ed5a8c	407	fmt = CS42L51_DAC_DIF_RJ16;
72ed5a8c	408	break;
1b6b0dfa	409	case 18:
72ed5a8c	410	fmt = CS42L51_DAC_DIF_RJ18;
72ed5a8c	411	break;
1b6b0dfa	412	case 20:
72ed5a8c	413	fmt = CS42L51_DAC_DIF_RJ20;
72ed5a8c	414	break;
1b6b0dfa	415	case 24:
72ed5a8c	416	fmt = CS42L51_DAC_DIF_RJ24;
	417	break;
	418	default:
	419	dev_err(codec->dev, "unknown format\n");
	420	return -EINVAL;
	421	}
	422	intf_ctl \|= CS42L51_INTF_CTL_DAC_FORMAT(fmt);
	423	break;
	424	default:
	425	dev_err(codec->dev, "unknown format\n");
	426	return -EINVAL;
	427	}
	428
	429	if (ratios[i].mclk)
	430	power_ctl \|= CS42L51_MIC_POWER_CTL_MCLK_DIV2;
	431
	432	ret = snd_soc_write(codec, CS42L51_INTF_CTL, intf_ctl);
	433	if (ret < 0)
	434	return ret;
	435
	436	ret = snd_soc_write(codec, CS42L51_MIC_POWER_CTL, power_ctl);
	437	if (ret < 0)
	438	return ret;
	439
	440	return 0;
	441	}
	442
	443	static int cs42l51_dai_mute(struct snd_soc_dai *dai, int mute)
	444	{
	445	struct snd_soc_codec *codec = dai->codec;
	446	int reg;
	447	int mask = CS42L51_DAC_OUT_CTL_DACA_MUTE\|CS42L51_DAC_OUT_CTL_DACB_MUTE;
	448
	449	reg = snd_soc_read(codec, CS42L51_DAC_OUT_CTL);
	450
	451	if (mute)
	452	reg \|= mask;
	453	else
	454	reg &= ~mask;
	455
	456	return snd_soc_write(codec, CS42L51_DAC_OUT_CTL, reg);
	457	}
	458
85e7652d	459	static const struct snd_soc_dai_ops cs42l51_dai_ops = {
72ed5a8c	460	.hw_params = cs42l51_hw_params,
	461	.set_sysclk = cs42l51_set_dai_sysclk,
	462	.set_fmt = cs42l51_set_dai_fmt,
	463	.digital_mute = cs42l51_dai_mute,
	464	};
	465
f0fba2ad LG	466	static struct snd_soc_dai_driver cs42l51_dai = {
f0fba2ad LG	467	.name = "cs42l51-hifi",
72ed5a8c	468	.playback = {
	469	.stream_name = "Playback",
	470	.channels_min = 1,
	471	.channels_max = 2,
	472	.rates = SNDRV_PCM_RATE_8000_96000,
	473	.formats = CS42L51_FORMATS,
	474	},
	475	.capture = {
	476	.stream_name = "Capture",
	477	.channels_min = 1,
	478	.channels_max = 2,
	479	.rates = SNDRV_PCM_RATE_8000_96000,
	480	.formats = CS42L51_FORMATS,
	481	},
	482	.ops = &cs42l51_dai_ops,
	483	};
72ed5a8c	484
a1253ef6	485	static int cs42l51_codec_probe(struct snd_soc_codec *codec)
72ed5a8c	486	{
f0fba2ad	487	int ret, reg;
72ed5a8c	488
f0fba2ad LG	489	/*
	490	* DAC configuration
	491	* - Use signal processor
	492	* - auto mute
	493	* - vol changes immediate
	494	* - no de-emphasize
	495	*/
	496	reg = CS42L51_DAC_CTL_DATA_SEL(1)
	497	\| CS42L51_DAC_CTL_AMUTE \| CS42L51_DAC_CTL_DACSZ(0);
	498	ret = snd_soc_write(codec, CS42L51_DAC_CTL, reg);
	499	if (ret < 0)
	500	return ret;
	501
72ed5a8c	502	return 0;
	503	}
	504
f0fba2ad	505	static struct snd_soc_codec_driver soc_codec_device_cs42l51 = {
a1253ef6	506	.probe = cs42l51_codec_probe,
3f7cec04 AL	507
	508	.controls = cs42l51_snd_controls,
	509	.num_controls = ARRAY_SIZE(cs42l51_snd_controls),
	510	.dapm_widgets = cs42l51_dapm_widgets,
	511	.num_dapm_widgets = ARRAY_SIZE(cs42l51_dapm_widgets),
	512	.dapm_routes = cs42l51_routes,
	513	.num_dapm_routes = ARRAY_SIZE(cs42l51_routes),
f0fba2ad	514	};
72ed5a8c	515
a1253ef6	516	const struct regmap_config cs42l51_regmap = {
da071489 MB	517	.max_register = CS42L51_CHARGE_FREQ,
	518	.cache_type = REGCACHE_RBTREE,
	519	};
a1253ef6	520	EXPORT_SYMBOL_GPL(cs42l51_regmap);
da071489	521
a1253ef6	522	int cs42l51_probe(struct device dev, struct regmap regmap)
72ed5a8c	523	{
f0fba2ad	524	struct cs42l51_private *cs42l51;
da071489	525	unsigned int val;
f0fba2ad	526	int ret;
72ed5a8c	527
a1253ef6 BA	528	if (IS_ERR(regmap))
	529	return PTR_ERR(regmap);
	530
	531	cs42l51 = devm_kzalloc(dev, sizeof(struct cs42l51_private),
	532	GFP_KERNEL);
	533	if (!cs42l51)
	534	return -ENOMEM;
	535
	536	dev_set_drvdata(dev, cs42l51);
da071489	537
f0fba2ad	538	/* Verify that we have a CS42L51 */
da071489	539	ret = regmap_read(regmap, CS42L51_CHIP_REV_ID, &val);
f0fba2ad	540	if (ret < 0) {
a1253ef6	541	dev_err(dev, "failed to read I2C\n");
f0fba2ad LG	542	goto error;
	543	}
	544
da071489 MB	545	if ((val != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_A)) &&
da071489 MB	546	(val != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_B))) {
a1253ef6	547	dev_err(dev, "Invalid chip id: %x\n", val);
f0fba2ad LG	548	ret = -ENODEV;
	549	goto error;
	550	}
1025c05f AL	551	dev_info(dev, "Cirrus Logic CS42L51, Revision: %02X\n",
1025c05f AL	552	val & CS42L51_CHIP_REV_MASK);
f0fba2ad	553
a1253ef6	554	ret = snd_soc_register_codec(dev,
f0fba2ad	555	&soc_codec_device_cs42l51, &cs42l51_dai, 1);
f0fba2ad LG	556	error:
	557	return ret;
	558	}
a1253ef6	559	EXPORT_SYMBOL_GPL(cs42l51_probe);
f0fba2ad	560
dfd72a68 TP	561	static const struct of_device_id cs42l51_of_match[] = {
	562	{ .compatible = "cirrus,cs42l51", },
	563	{ }
	564	};
	565	MODULE_DEVICE_TABLE(of, cs42l51_of_match);
69737897	566	MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
72ed5a8c	567	MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver");
72ed5a8c	568	MODULE_LICENSE("GPL");