[linux-2.6-block.git] / sound / soc / codecs / ak4641.c

/*
 * ak4641.c  --  AK4641 ALSA Soc Audio driver
 *
 * Copyright (C) 2008 Harald Welte <laforge@gnufiish.org>
 * Copyright (C) 2011 Dmitry Artamonow <mad_soft@inbox.ru>
 *
 * Based on ak4535.c by Richard Purdie
 *
 * 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/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/ak4641.h>

#include "ak4641.h"

/* codec private data */
struct ak4641_priv {
	unsigned int sysclk;
	int deemph;
	int playback_fs;
};

/*
 * ak4641 register cache
 */
static const u8 ak4641_reg[AK4641_CACHEREGNUM] = {
	0x00, 0x80, 0x00, 0x80,
	0x02, 0x00, 0x11, 0x05,
	0x00, 0x00, 0x36, 0x10,
	0x00, 0x00, 0x57, 0x00,
	0x88, 0x88, 0x08, 0x08
};

static const int deemph_settings[] = {44100, 0, 48000, 32000};

static int ak4641_set_deemph(struct snd_soc_codec *codec)
{
	struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
	int i, best = 0;

	for (i = 0 ; i < ARRAY_SIZE(deemph_settings); i++) {
		/* if deemphasis is on, select the nearest available rate */
		if (ak4641->deemph && deemph_settings[i] != 0 &&
		    abs(deemph_settings[i] - ak4641->playback_fs) <
		    abs(deemph_settings[best] - ak4641->playback_fs))
			best = i;

		if (!ak4641->deemph && deemph_settings[i] == 0)
			best = i;
	}

	dev_dbg(codec->dev, "Set deemphasis %d\n", best);

	return snd_soc_update_bits(codec, AK4641_DAC, 0x3, best);
}

static int ak4641_put_deemph(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
	int deemph = ucontrol->value.enumerated.item[0];

	if (deemph > 1)
		return -EINVAL;

	ak4641->deemph = deemph;

	return ak4641_set_deemph(codec);
}

static int ak4641_get_deemph(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);

	ucontrol->value.enumerated.item[0] = ak4641->deemph;
	return 0;
};

static const char *ak4641_mono_out[] = {"(L + R)/2", "Hi-Z"};
static const char *ak4641_hp_out[] = {"Stereo", "Mono"};
static const char *ak4641_mic_select[] = {"Internal", "External"};
static const char *ak4641_mic_or_dac[] = {"Microphone", "Voice DAC"};


static const DECLARE_TLV_DB_SCALE(mono_gain_tlv, -1700, 2300, 0);
static const DECLARE_TLV_DB_SCALE(mic_boost_tlv, 0, 2000, 0);
static const DECLARE_TLV_DB_SCALE(eq_tlv, -1050, 150, 0);
static const DECLARE_TLV_DB_SCALE(master_tlv, -12750, 50, 0);
static const DECLARE_TLV_DB_SCALE(mic_stereo_sidetone_tlv, -2700, 300, 0);
static const DECLARE_TLV_DB_SCALE(mic_mono_sidetone_tlv, -400, 400, 0);
static const DECLARE_TLV_DB_SCALE(capture_tlv, -800, 50, 0);
static const DECLARE_TLV_DB_SCALE(alc_tlv, -800, 50, 0);
static const DECLARE_TLV_DB_SCALE(aux_in_tlv, -2100, 300, 0);


static const struct soc_enum ak4641_mono_out_enum =
	SOC_ENUM_SINGLE(AK4641_SIG1, 6, 2, ak4641_mono_out);
static const struct soc_enum ak4641_hp_out_enum =
	SOC_ENUM_SINGLE(AK4641_MODE2, 2, 2, ak4641_hp_out);
static const struct soc_enum ak4641_mic_select_enum =
	SOC_ENUM_SINGLE(AK4641_MIC, 1, 2, ak4641_mic_select);
static const struct soc_enum ak4641_mic_or_dac_enum =
	SOC_ENUM_SINGLE(AK4641_BTIF, 4, 2, ak4641_mic_or_dac);

static const struct snd_kcontrol_new ak4641_snd_controls[] = {
	SOC_ENUM("Mono 1 Output", ak4641_mono_out_enum),
	SOC_SINGLE_TLV("Mono 1 Gain Volume", AK4641_SIG1, 7, 1, 1,
							mono_gain_tlv),
	SOC_ENUM("Headphone Output", ak4641_hp_out_enum),
	SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
					ak4641_get_deemph, ak4641_put_deemph),

	SOC_SINGLE_TLV("Mic Boost Volume", AK4641_MIC, 0, 1, 0, mic_boost_tlv),

	SOC_SINGLE("ALC Operation Time", AK4641_TIMER, 0, 3, 0),
	SOC_SINGLE("ALC Recovery Time", AK4641_TIMER, 2, 3, 0),
	SOC_SINGLE("ALC ZC Time", AK4641_TIMER, 4, 3, 0),

	SOC_SINGLE("ALC 1 Switch", AK4641_ALC1, 5, 1, 0),

	SOC_SINGLE_TLV("ALC Volume", AK4641_ALC2, 0, 71, 0, alc_tlv),
	SOC_SINGLE("Left Out Enable Switch", AK4641_SIG2, 1, 1, 0),
	SOC_SINGLE("Right Out Enable Switch", AK4641_SIG2, 0, 1, 0),

	SOC_SINGLE_TLV("Capture Volume", AK4641_PGA, 0, 71, 0, capture_tlv),

	SOC_DOUBLE_R_TLV("Master Playback Volume", AK4641_LATT,
				AK4641_RATT, 0, 255, 1, master_tlv),

	SOC_SINGLE_TLV("AUX In Volume", AK4641_VOL, 0, 15, 0, aux_in_tlv),

	SOC_SINGLE("Equalizer Switch", AK4641_DAC, 2, 1, 0),
	SOC_SINGLE_TLV("EQ1 100 Hz Volume", AK4641_EQLO, 0, 15, 1, eq_tlv),
	SOC_SINGLE_TLV("EQ2 250 Hz Volume", AK4641_EQLO, 4, 15, 1, eq_tlv),
	SOC_SINGLE_TLV("EQ3 1 kHz Volume", AK4641_EQMID, 0, 15, 1, eq_tlv),
	SOC_SINGLE_TLV("EQ4 3.5 kHz Volume", AK4641_EQMID, 4, 15, 1, eq_tlv),
	SOC_SINGLE_TLV("EQ5 10 kHz Volume", AK4641_EQHI, 0, 15, 1, eq_tlv),
};

/* Mono 1 Mixer */
static const struct snd_kcontrol_new ak4641_mono1_mixer_controls[] = {
	SOC_DAPM_SINGLE_TLV("Mic Mono Sidetone Volume", AK4641_VOL, 7, 1, 0,
						mic_mono_sidetone_tlv),
	SOC_DAPM_SINGLE("Mic Mono Sidetone Switch", AK4641_SIG1, 4, 1, 0),
	SOC_DAPM_SINGLE("Mono Playback Switch", AK4641_SIG1, 5, 1, 0),
};

/* Stereo Mixer */
static const struct snd_kcontrol_new ak4641_stereo_mixer_controls[] = {
	SOC_DAPM_SINGLE_TLV("Mic Sidetone Volume", AK4641_VOL, 4, 7, 0,
						mic_stereo_sidetone_tlv),
	SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4641_SIG2, 4, 1, 0),
	SOC_DAPM_SINGLE("Playback Switch", AK4641_SIG2, 7, 1, 0),
	SOC_DAPM_SINGLE("Aux Bypass Switch", AK4641_SIG2, 5, 1, 0),
};

/* Input Mixer */
static const struct snd_kcontrol_new ak4641_input_mixer_controls[] = {
	SOC_DAPM_SINGLE("Mic Capture Switch", AK4641_MIC, 2, 1, 0),
	SOC_DAPM_SINGLE("Aux Capture Switch", AK4641_MIC, 5, 1, 0),
};

/* Mic mux */
static const struct snd_kcontrol_new ak4641_mic_mux_control =
	SOC_DAPM_ENUM("Mic Select", ak4641_mic_select_enum);

/* Input mux */
static const struct snd_kcontrol_new ak4641_input_mux_control =
	SOC_DAPM_ENUM("Input Select", ak4641_mic_or_dac_enum);

/* mono 2 switch */
static const struct snd_kcontrol_new ak4641_mono2_control =
	SOC_DAPM_SINGLE("Switch", AK4641_SIG1, 0, 1, 0);

/* ak4641 dapm widgets */
static const struct snd_soc_dapm_widget ak4641_dapm_widgets[] = {
	SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
		&ak4641_stereo_mixer_controls[0],
		ARRAY_SIZE(ak4641_stereo_mixer_controls)),
	SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
		&ak4641_mono1_mixer_controls[0],
		ARRAY_SIZE(ak4641_mono1_mixer_controls)),
	SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
		&ak4641_input_mixer_controls[0],
		ARRAY_SIZE(ak4641_input_mixer_controls)),
	SND_SOC_DAPM_MUX("Mic Mux", SND_SOC_NOPM, 0, 0,
		&ak4641_mic_mux_control),
	SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
		&ak4641_input_mux_control),
	SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
		&ak4641_mono2_control),

	SND_SOC_DAPM_OUTPUT("LOUT"),
	SND_SOC_DAPM_OUTPUT("ROUT"),
	SND_SOC_DAPM_OUTPUT("MOUT1"),
	SND_SOC_DAPM_OUTPUT("MOUT2"),
	SND_SOC_DAPM_OUTPUT("MICOUT"),

	SND_SOC_DAPM_ADC("ADC", "HiFi Capture", AK4641_PM1, 0, 0),
	SND_SOC_DAPM_PGA("Mic", AK4641_PM1, 1, 0, NULL, 0),
	SND_SOC_DAPM_PGA("AUX In", AK4641_PM1, 2, 0, NULL, 0),
	SND_SOC_DAPM_PGA("Mono Out", AK4641_PM1, 3, 0, NULL, 0),
	SND_SOC_DAPM_PGA("Line Out", AK4641_PM1, 4, 0, NULL, 0),

	SND_SOC_DAPM_DAC("DAC", "HiFi Playback", AK4641_PM2, 0, 0),
	SND_SOC_DAPM_PGA("Mono Out 2", AK4641_PM2, 3, 0, NULL, 0),

	SND_SOC_DAPM_ADC("Voice ADC", "Voice Capture", AK4641_BTIF, 0, 0),
	SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", AK4641_BTIF, 1, 0),

	SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4641_MIC, 3, 0),
	SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4641_MIC, 4, 0),

	SND_SOC_DAPM_INPUT("MICIN"),
	SND_SOC_DAPM_INPUT("MICEXT"),
	SND_SOC_DAPM_INPUT("AUX"),
	SND_SOC_DAPM_INPUT("AIN"),
};

static const struct snd_soc_dapm_route ak4641_audio_map[] = {
	/* Stereo Mixer */
	{"Stereo Mixer", "Playback Switch", "DAC"},
	{"Stereo Mixer", "Mic Sidetone Switch", "Input Mux"},
	{"Stereo Mixer", "Aux Bypass Switch", "AUX In"},

	/* Mono 1 Mixer */
	{"Mono1 Mixer", "Mic Mono Sidetone Switch", "Input Mux"},
	{"Mono1 Mixer", "Mono Playback Switch", "DAC"},

	/* Mic */
	{"Mic", NULL, "AIN"},
	{"Mic Mux", "Internal", "Mic Int Bias"},
	{"Mic Mux", "External", "Mic Ext Bias"},
	{"Mic Int Bias", NULL, "MICIN"},
	{"Mic Ext Bias", NULL, "MICEXT"},
	{"MICOUT", NULL, "Mic Mux"},

	/* Input Mux */
	{"Input Mux", "Microphone", "Mic"},
	{"Input Mux", "Voice DAC", "Voice DAC"},

	/* Line Out */
	{"LOUT", NULL, "Line Out"},
	{"ROUT", NULL, "Line Out"},
	{"Line Out", NULL, "Stereo Mixer"},

	/* Mono 1 Out */
	{"MOUT1", NULL, "Mono Out"},
	{"Mono Out", NULL, "Mono1 Mixer"},

	/* Mono 2 Out */
	{"MOUT2", NULL, "Mono 2 Enable"},
	{"Mono 2 Enable", "Switch", "Mono Out 2"},
	{"Mono Out 2", NULL, "Stereo Mixer"},

	{"Voice ADC", NULL, "Mono 2 Enable"},

	/* Aux In */
	{"AUX In", NULL, "AUX"},

	/* ADC */
	{"ADC", NULL, "Input Mixer"},
	{"Input Mixer", "Mic Capture Switch", "Mic"},
	{"Input Mixer", "Aux Capture Switch", "AUX In"},
};

static int ak4641_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 ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);

	ak4641->sysclk = freq;
	return 0;
}

static int ak4641_i2s_hw_params(struct snd_pcm_substream *substream,
				 struct snd_pcm_hw_params *params,
				 struct snd_soc_dai *dai)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_codec *codec = rtd->codec;
	struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
	int rate = params_rate(params), fs = 256;
	u8 mode2;

	if (rate)
		fs = ak4641->sysclk / rate;
	else
		return -EINVAL;

	/* set fs */
	switch (fs) {
	case 1024:
		mode2 = (0x2 << 5);
		break;
	case 512:
		mode2 = (0x1 << 5);
		break;
	case 256:
		mode2 = (0x0 << 5);
		break;
	default:
		dev_err(codec->dev, "Error: unsupported fs=%d\n", fs);
		return -EINVAL;
	}

	snd_soc_update_bits(codec, AK4641_MODE2, (0x3 << 5), mode2);

	/* Update de-emphasis filter for the new rate */
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		ak4641->playback_fs = rate;
		ak4641_set_deemph(codec);
	};

	return 0;
}

static int ak4641_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai,
				  unsigned int fmt)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	u8 btif;
	int ret;

	/* interface format */
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		btif = (0x3 << 5);
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		btif = (0x2 << 5);
		break;
	case SND_SOC_DAIFMT_DSP_A:	/* MSB after FRM */
		btif = (0x0 << 5);
		break;
	case SND_SOC_DAIFMT_DSP_B:	/* MSB during FRM */
		btif = (0x1 << 5);
		break;
	default:
		return -EINVAL;
	}

	ret = snd_soc_update_bits(codec, AK4641_BTIF, (0x3 << 5), btif);
	if (ret < 0)
		return ret;

	return 0;
}

static int ak4641_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai,
		unsigned int fmt)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	u8 mode1 = 0;

	/* interface format */
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		mode1 = 0x02;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		mode1 = 0x01;
		break;
	default:
		return -EINVAL;
	}

	return snd_soc_write(codec, AK4641_MODE1, mode1);
}

static int ak4641_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;

	return snd_soc_update_bits(codec, AK4641_DAC, 0x20, mute ? 0x20 : 0);
}

static int ak4641_set_bias_level(struct snd_soc_codec *codec,
	enum snd_soc_bias_level level)
{
	struct ak4641_platform_data *pdata = codec->dev->platform_data;
	int ret;

	switch (level) {
	case SND_SOC_BIAS_ON:
		/* unmute */
		snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0);
		break;
	case SND_SOC_BIAS_PREPARE:
		/* mute */
		snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0x20);
		break;
	case SND_SOC_BIAS_STANDBY:
		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
			if (pdata && gpio_is_valid(pdata->gpio_power))
				gpio_set_value(pdata->gpio_power, 1);
			mdelay(1);
			if (pdata && gpio_is_valid(pdata->gpio_npdn))
				gpio_set_value(pdata->gpio_npdn, 1);
			mdelay(1);

			ret = snd_soc_cache_sync(codec);
			if (ret) {
				dev_err(codec->dev,
					"Failed to sync cache: %d\n", ret);
				return ret;
			}
		}
		snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0x80);
		snd_soc_update_bits(codec, AK4641_PM2, 0x80, 0);
		break;
	case SND_SOC_BIAS_OFF:
		snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0);
		if (pdata && gpio_is_valid(pdata->gpio_npdn))
			gpio_set_value(pdata->gpio_npdn, 0);
		if (pdata && gpio_is_valid(pdata->gpio_power))
			gpio_set_value(pdata->gpio_power, 0);
		codec->cache_sync = 1;
		break;
	}
	codec->dapm.bias_level = level;
	return 0;
}

#define AK4641_RATES	(SNDRV_PCM_RATE_8000_48000)
#define AK4641_RATES_BT (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
			 SNDRV_PCM_RATE_16000)
#define AK4641_FORMATS	(SNDRV_PCM_FMTBIT_S16_LE)

static const struct snd_soc_dai_ops ak4641_i2s_dai_ops = {
	.hw_params    = ak4641_i2s_hw_params,
	.set_fmt      = ak4641_i2s_set_dai_fmt,
	.digital_mute = ak4641_mute,
	.set_sysclk   = ak4641_set_dai_sysclk,
};

static const struct snd_soc_dai_ops ak4641_pcm_dai_ops = {
	.hw_params    = NULL, /* rates are controlled by BT chip */
	.set_fmt      = ak4641_pcm_set_dai_fmt,
	.digital_mute = ak4641_mute,
	.set_sysclk   = ak4641_set_dai_sysclk,
};

static struct snd_soc_dai_driver ak4641_dai[] = {
{
	.name = "ak4641-hifi",
	.id = 1,
	.playback = {
		.stream_name = "HiFi Playback",
		.channels_min = 1,
		.channels_max = 2,
		.rates = AK4641_RATES,
		.formats = AK4641_FORMATS,
	},
	.capture = {
		.stream_name = "HiFi Capture",
		.channels_min = 1,
		.channels_max = 2,
		.rates = AK4641_RATES,
		.formats = AK4641_FORMATS,
	},
	.ops = &ak4641_i2s_dai_ops,
	.symmetric_rates = 1,
},
{
	.name = "ak4641-voice",
	.id = 1,
	.playback = {
		.stream_name = "Voice Playback",
		.channels_min = 1,
		.channels_max = 1,
		.rates = AK4641_RATES_BT,
		.formats = AK4641_FORMATS,
	},
	.capture = {
		.stream_name = "Voice Capture",
		.channels_min = 1,
		.channels_max = 1,
		.rates = AK4641_RATES_BT,
		.formats = AK4641_FORMATS,
	},
	.ops = &ak4641_pcm_dai_ops,
	.symmetric_rates = 1,
},
};

static int ak4641_suspend(struct snd_soc_codec *codec)
{
	ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF);
	return 0;
}

static int ak4641_resume(struct snd_soc_codec *codec)
{
	ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	return 0;
}

static int ak4641_probe(struct snd_soc_codec *codec)
{
	struct ak4641_platform_data *pdata = codec->dev->platform_data;
	int ret;


	if (pdata) {
		if (gpio_is_valid(pdata->gpio_power)) {
			ret = gpio_request_one(pdata->gpio_power,
					GPIOF_OUT_INIT_LOW, "ak4641 power");
			if (ret)
				goto err_out;
		}
		if (gpio_is_valid(pdata->gpio_npdn)) {
			ret = gpio_request_one(pdata->gpio_npdn,
					GPIOF_OUT_INIT_LOW, "ak4641 npdn");
			if (ret)
				goto err_gpio;

			udelay(1); /* > 150 ns */
			gpio_set_value(pdata->gpio_npdn, 1);
		}
	}

	ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C);
	if (ret != 0) {
		dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
		goto err_register;
	}

	/* power on device */
	ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	return 0;

err_register:
	if (pdata) {
		if (gpio_is_valid(pdata->gpio_power))
			gpio_set_value(pdata->gpio_power, 0);
		if (gpio_is_valid(pdata->gpio_npdn))
			gpio_free(pdata->gpio_npdn);
	}
err_gpio:
	if (pdata && gpio_is_valid(pdata->gpio_power))
		gpio_free(pdata->gpio_power);
err_out:
	return ret;
}

static int ak4641_remove(struct snd_soc_codec *codec)
{
	struct ak4641_platform_data *pdata = codec->dev->platform_data;

	ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF);

	if (pdata) {
		if (gpio_is_valid(pdata->gpio_power)) {
			gpio_set_value(pdata->gpio_power, 0);
			gpio_free(pdata->gpio_power);
		}
		if (gpio_is_valid(pdata->gpio_npdn))
			gpio_free(pdata->gpio_npdn);
	}
	return 0;
}


static struct snd_soc_codec_driver soc_codec_dev_ak4641 = {
	.probe			= ak4641_probe,
	.remove			= ak4641_remove,
	.suspend		= ak4641_suspend,
	.resume			= ak4641_resume,
	.controls		= ak4641_snd_controls,
	.num_controls		= ARRAY_SIZE(ak4641_snd_controls),
	.dapm_widgets		= ak4641_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(ak4641_dapm_widgets),
	.dapm_routes		= ak4641_audio_map,
	.num_dapm_routes	= ARRAY_SIZE(ak4641_audio_map),
	.set_bias_level		= ak4641_set_bias_level,
	.reg_cache_size		= ARRAY_SIZE(ak4641_reg),
	.reg_word_size		= sizeof(u8),
	.reg_cache_default	= ak4641_reg,
	.reg_cache_step		= 1,
};


static int __devinit ak4641_i2c_probe(struct i2c_client *i2c,
				      const struct i2c_device_id *id)
{
	struct ak4641_priv *ak4641;
	int ret;

	ak4641 = devm_kzalloc(&i2c->dev, sizeof(struct ak4641_priv),
			      GFP_KERNEL);
	if (!ak4641)
		return -ENOMEM;

	i2c_set_clientdata(i2c, ak4641);

	ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak4641,
				ak4641_dai, ARRAY_SIZE(ak4641_dai));
	return ret;
}

static int __devexit ak4641_i2c_remove(struct i2c_client *i2c)
{
	snd_soc_unregister_codec(&i2c->dev);
	return 0;
}

static const struct i2c_device_id ak4641_i2c_id[] = {
	{ "ak4641", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, ak4641_i2c_id);

static struct i2c_driver ak4641_i2c_driver = {
	.driver = {
		.name = "ak4641",
		.owner = THIS_MODULE,
	},
	.probe =    ak4641_i2c_probe,
	.remove =   __devexit_p(ak4641_i2c_remove),
	.id_table = ak4641_i2c_id,
};

module_i2c_driver(ak4641_i2c_driver);

MODULE_DESCRIPTION("SoC AK4641 driver");
MODULE_AUTHOR("Harald Welte <laforge@gnufiish.org>");
MODULE_LICENSE("GPL");
Commit	Line	Data
00d27010 DA	1	/*
	2	* ak4641.c -- AK4641 ALSA Soc Audio driver
	3	*
	4	* Copyright (C) 2008 Harald Welte <laforge@gnufiish.org>
	5	* Copyright (C) 2011 Dmitry Artamonow <mad_soft@inbox.ru>
	6	*
	7	* Based on ak4535.c by Richard Purdie
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/init.h>
	16	#include <linux/delay.h>
	17	#include <linux/gpio.h>
	18	#include <linux/pm.h>
	19	#include <linux/i2c.h>
00d27010 DA	20	#include <linux/slab.h>
	21	#include <sound/core.h>
	22	#include <sound/pcm.h>
	23	#include <sound/pcm_params.h>
	24	#include <sound/soc.h>
	25	#include <sound/initval.h>
	26	#include <sound/tlv.h>
	27	#include <sound/ak4641.h>
	28
	29	#include "ak4641.h"
	30
	31	/* codec private data */
	32	struct ak4641_priv {
00d27010 DA	33	unsigned int sysclk;
	34	int deemph;
	35	int playback_fs;
	36	};
	37
	38	/*
	39	* ak4641 register cache
	40	*/
	41	static const u8 ak4641_reg[AK4641_CACHEREGNUM] = {
	42	0x00, 0x80, 0x00, 0x80,
	43	0x02, 0x00, 0x11, 0x05,
	44	0x00, 0x00, 0x36, 0x10,
	45	0x00, 0x00, 0x57, 0x00,
	46	0x88, 0x88, 0x08, 0x08
	47	};
	48
	49	static const int deemph_settings[] = {44100, 0, 48000, 32000};
	50
	51	static int ak4641_set_deemph(struct snd_soc_codec *codec)
	52	{
	53	struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
	54	int i, best = 0;
	55
	56	for (i = 0 ; i < ARRAY_SIZE(deemph_settings); i++) {
	57	/* if deemphasis is on, select the nearest available rate */
	58	if (ak4641->deemph && deemph_settings[i] != 0 &&
	59	abs(deemph_settings[i] - ak4641->playback_fs) <
	60	abs(deemph_settings[best] - ak4641->playback_fs))
	61	best = i;
	62
	63	if (!ak4641->deemph && deemph_settings[i] == 0)
	64	best = i;
	65	}
	66
	67	dev_dbg(codec->dev, "Set deemphasis %d\n", best);
	68
	69	return snd_soc_update_bits(codec, AK4641_DAC, 0x3, best);
	70	}
	71
	72	static int ak4641_put_deemph(struct snd_kcontrol *kcontrol,
	73	struct snd_ctl_elem_value *ucontrol)
	74	{
	75	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	76	struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
	77	int deemph = ucontrol->value.enumerated.item[0];
	78
	79	if (deemph > 1)
	80	return -EINVAL;
	81
	82	ak4641->deemph = deemph;
	83
	84	return ak4641_set_deemph(codec);
	85	}
	86
	87	static int ak4641_get_deemph(struct snd_kcontrol *kcontrol,
	88	struct snd_ctl_elem_value *ucontrol)
	89	{
	90	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
	91	struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
	92
	93	ucontrol->value.enumerated.item[0] = ak4641->deemph;
	94	return 0;
	95	};
	96
97	static const char *ak4641_mono_out[] = {"(L + R)/2", "Hi-Z"};
98	static const char *ak4641_hp_out[] = {"Stereo", "Mono"};
99	static const char *ak4641_mic_select[] = {"Internal", "External"};
100	static const char *ak4641_mic_or_dac[] = {"Microphone", "Voice DAC"};
101
102
103	static const DECLARE_TLV_DB_SCALE(mono_gain_tlv, -1700, 2300, 0);
104	static const DECLARE_TLV_DB_SCALE(mic_boost_tlv, 0, 2000, 0);
105	static const DECLARE_TLV_DB_SCALE(eq_tlv, -1050, 150, 0);
106	static const DECLARE_TLV_DB_SCALE(master_tlv, -12750, 50, 0);
107	static const DECLARE_TLV_DB_SCALE(mic_stereo_sidetone_tlv, -2700, 300, 0);
108	static const DECLARE_TLV_DB_SCALE(mic_mono_sidetone_tlv, -400, 400, 0);
109	static const DECLARE_TLV_DB_SCALE(capture_tlv, -800, 50, 0);
110	static const DECLARE_TLV_DB_SCALE(alc_tlv, -800, 50, 0);
111	static const DECLARE_TLV_DB_SCALE(aux_in_tlv, -2100, 300, 0);
112
113
114	static const struct soc_enum ak4641_mono_out_enum =
115	SOC_ENUM_SINGLE(AK4641_SIG1, 6, 2, ak4641_mono_out);
116	static const struct soc_enum ak4641_hp_out_enum =
117	SOC_ENUM_SINGLE(AK4641_MODE2, 2, 2, ak4641_hp_out);
118	static const struct soc_enum ak4641_mic_select_enum =
119	SOC_ENUM_SINGLE(AK4641_MIC, 1, 2, ak4641_mic_select);
120	static const struct soc_enum ak4641_mic_or_dac_enum =
121	SOC_ENUM_SINGLE(AK4641_BTIF, 4, 2, ak4641_mic_or_dac);
122
123	static const struct snd_kcontrol_new ak4641_snd_controls[] = {
124	SOC_ENUM("Mono 1 Output", ak4641_mono_out_enum),
125	SOC_SINGLE_TLV("Mono 1 Gain Volume", AK4641_SIG1, 7, 1, 1,
126	mono_gain_tlv),
127	SOC_ENUM("Headphone Output", ak4641_hp_out_enum),
128	SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
129	ak4641_get_deemph, ak4641_put_deemph),
130
131	SOC_SINGLE_TLV("Mic Boost Volume", AK4641_MIC, 0, 1, 0, mic_boost_tlv),
132
133	SOC_SINGLE("ALC Operation Time", AK4641_TIMER, 0, 3, 0),
134	SOC_SINGLE("ALC Recovery Time", AK4641_TIMER, 2, 3, 0),
135	SOC_SINGLE("ALC ZC Time", AK4641_TIMER, 4, 3, 0),
136
137	SOC_SINGLE("ALC 1 Switch", AK4641_ALC1, 5, 1, 0),
138
139	SOC_SINGLE_TLV("ALC Volume", AK4641_ALC2, 0, 71, 0, alc_tlv),
140	SOC_SINGLE("Left Out Enable Switch", AK4641_SIG2, 1, 1, 0),
141	SOC_SINGLE("Right Out Enable Switch", AK4641_SIG2, 0, 1, 0),
142
143	SOC_SINGLE_TLV("Capture Volume", AK4641_PGA, 0, 71, 0, capture_tlv),
144
145	SOC_DOUBLE_R_TLV("Master Playback Volume", AK4641_LATT,
146	AK4641_RATT, 0, 255, 1, master_tlv),
147
148	SOC_SINGLE_TLV("AUX In Volume", AK4641_VOL, 0, 15, 0, aux_in_tlv),
149
150	SOC_SINGLE("Equalizer Switch", AK4641_DAC, 2, 1, 0),
151	SOC_SINGLE_TLV("EQ1 100 Hz Volume", AK4641_EQLO, 0, 15, 1, eq_tlv),
152	SOC_SINGLE_TLV("EQ2 250 Hz Volume", AK4641_EQLO, 4, 15, 1, eq_tlv),
153	SOC_SINGLE_TLV("EQ3 1 kHz Volume", AK4641_EQMID, 0, 15, 1, eq_tlv),
154	SOC_SINGLE_TLV("EQ4 3.5 kHz Volume", AK4641_EQMID, 4, 15, 1, eq_tlv),
155	SOC_SINGLE_TLV("EQ5 10 kHz Volume", AK4641_EQHI, 0, 15, 1, eq_tlv),
156	};
157
158	/* Mono 1 Mixer */
159	static const struct snd_kcontrol_new ak4641_mono1_mixer_controls[] = {
160	SOC_DAPM_SINGLE_TLV("Mic Mono Sidetone Volume", AK4641_VOL, 7, 1, 0,
161	mic_mono_sidetone_tlv),
162	SOC_DAPM_SINGLE("Mic Mono Sidetone Switch", AK4641_SIG1, 4, 1, 0),
163	SOC_DAPM_SINGLE("Mono Playback Switch", AK4641_SIG1, 5, 1, 0),
164	};
165
166	/* Stereo Mixer */
167	static const struct snd_kcontrol_new ak4641_stereo_mixer_controls[] = {
168	SOC_DAPM_SINGLE_TLV("Mic Sidetone Volume", AK4641_VOL, 4, 7, 0,
169	mic_stereo_sidetone_tlv),
170	SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4641_SIG2, 4, 1, 0),
171	SOC_DAPM_SINGLE("Playback Switch", AK4641_SIG2, 7, 1, 0),
172	SOC_DAPM_SINGLE("Aux Bypass Switch", AK4641_SIG2, 5, 1, 0),
173	};
174
175	/* Input Mixer */
176	static const struct snd_kcontrol_new ak4641_input_mixer_controls[] = {
177	SOC_DAPM_SINGLE("Mic Capture Switch", AK4641_MIC, 2, 1, 0),
178	SOC_DAPM_SINGLE("Aux Capture Switch", AK4641_MIC, 5, 1, 0),
179	};
180
181	/* Mic mux */
182	static const struct snd_kcontrol_new ak4641_mic_mux_control =
183	SOC_DAPM_ENUM("Mic Select", ak4641_mic_select_enum);
184
185	/* Input mux */
186	static const struct snd_kcontrol_new ak4641_input_mux_control =
187	SOC_DAPM_ENUM("Input Select", ak4641_mic_or_dac_enum);
188
189	/* mono 2 switch */
190	static const struct snd_kcontrol_new ak4641_mono2_control =
191	SOC_DAPM_SINGLE("Switch", AK4641_SIG1, 0, 1, 0);
192
193	/* ak4641 dapm widgets */
194	static const struct snd_soc_dapm_widget ak4641_dapm_widgets[] = {
195	SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
196	&ak4641_stereo_mixer_controls[0],
197	ARRAY_SIZE(ak4641_stereo_mixer_controls)),
198	SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
199	&ak4641_mono1_mixer_controls[0],
200	ARRAY_SIZE(ak4641_mono1_mixer_controls)),
201	SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
202	&ak4641_input_mixer_controls[0],
203	ARRAY_SIZE(ak4641_input_mixer_controls)),
204	SND_SOC_DAPM_MUX("Mic Mux", SND_SOC_NOPM, 0, 0,
205	&ak4641_mic_mux_control),
206	SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
207	&ak4641_input_mux_control),
208	SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
209	&ak4641_mono2_control),
210
211	SND_SOC_DAPM_OUTPUT("LOUT"),
212	SND_SOC_DAPM_OUTPUT("ROUT"),
213	SND_SOC_DAPM_OUTPUT("MOUT1"),
214	SND_SOC_DAPM_OUTPUT("MOUT2"),
215	SND_SOC_DAPM_OUTPUT("MICOUT"),
216
217	SND_SOC_DAPM_ADC("ADC", "HiFi Capture", AK4641_PM1, 0, 0),
218	SND_SOC_DAPM_PGA("Mic", AK4641_PM1, 1, 0, NULL, 0),
219	SND_SOC_DAPM_PGA("AUX In", AK4641_PM1, 2, 0, NULL, 0),
220	SND_SOC_DAPM_PGA("Mono Out", AK4641_PM1, 3, 0, NULL, 0),
221	SND_SOC_DAPM_PGA("Line Out", AK4641_PM1, 4, 0, NULL, 0),
222
223	SND_SOC_DAPM_DAC("DAC", "HiFi Playback", AK4641_PM2, 0, 0),
224	SND_SOC_DAPM_PGA("Mono Out 2", AK4641_PM2, 3, 0, NULL, 0),
225
226	SND_SOC_DAPM_ADC("Voice ADC", "Voice Capture", AK4641_BTIF, 0, 0),
24441e17	227	SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", AK4641_BTIF, 1, 0),
00d27010 DA	228
	229	SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4641_MIC, 3, 0),
	230	SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4641_MIC, 4, 0),
	231
	232	SND_SOC_DAPM_INPUT("MICIN"),
	233	SND_SOC_DAPM_INPUT("MICEXT"),
	234	SND_SOC_DAPM_INPUT("AUX"),
	235	SND_SOC_DAPM_INPUT("AIN"),
	236	};
	237
	238	static const struct snd_soc_dapm_route ak4641_audio_map[] = {
	239	/* Stereo Mixer */
	240	{"Stereo Mixer", "Playback Switch", "DAC"},
	241	{"Stereo Mixer", "Mic Sidetone Switch", "Input Mux"},
	242	{"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
	243
	244	/* Mono 1 Mixer */
	245	{"Mono1 Mixer", "Mic Mono Sidetone Switch", "Input Mux"},
	246	{"Mono1 Mixer", "Mono Playback Switch", "DAC"},
	247
	248	/* Mic */
	249	{"Mic", NULL, "AIN"},
	250	{"Mic Mux", "Internal", "Mic Int Bias"},
	251	{"Mic Mux", "External", "Mic Ext Bias"},
	252	{"Mic Int Bias", NULL, "MICIN"},
	253	{"Mic Ext Bias", NULL, "MICEXT"},
	254	{"MICOUT", NULL, "Mic Mux"},
	255
	256	/* Input Mux */
	257	{"Input Mux", "Microphone", "Mic"},
	258	{"Input Mux", "Voice DAC", "Voice DAC"},
	259
	260	/* Line Out */
	261	{"LOUT", NULL, "Line Out"},
	262	{"ROUT", NULL, "Line Out"},
	263	{"Line Out", NULL, "Stereo Mixer"},
	264
	265	/* Mono 1 Out */
	266	{"MOUT1", NULL, "Mono Out"},
	267	{"Mono Out", NULL, "Mono1 Mixer"},
	268
	269	/* Mono 2 Out */
	270	{"MOUT2", NULL, "Mono 2 Enable"},
	271	{"Mono 2 Enable", "Switch", "Mono Out 2"},
	272	{"Mono Out 2", NULL, "Stereo Mixer"},
	273
	274	{"Voice ADC", NULL, "Mono 2 Enable"},
	275
	276	/* Aux In */
	277	{"AUX In", NULL, "AUX"},
	278
	279	/* ADC */
	280	{"ADC", NULL, "Input Mixer"},
	281	{"Input Mixer", "Mic Capture Switch", "Mic"},
	282	{"Input Mixer", "Aux Capture Switch", "AUX In"},
	283	};
	284
	285	static int ak4641_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	286	int clk_id, unsigned int freq, int dir)
	287	{
	288	struct snd_soc_codec *codec = codec_dai->codec;
	289	struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
	290
	291	ak4641->sysclk = freq;
292	return 0;
293	}
294
295	static int ak4641_i2s_hw_params(struct snd_pcm_substream *substream,
296	struct snd_pcm_hw_params *params,
297	struct snd_soc_dai *dai)
298	{
299	struct snd_soc_pcm_runtime *rtd = substream->private_data;
300	struct snd_soc_codec *codec = rtd->codec;
301	struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
302	int rate = params_rate(params), fs = 256;
303	u8 mode2;
304
305	if (rate)
306	fs = ak4641->sysclk / rate;
307	else
308	return -EINVAL;
309
310	/* set fs */
311	switch (fs) {
312	case 1024:
313	mode2 = (0x2 << 5);
314	break;
315	case 512:
316	mode2 = (0x1 << 5);
317	break;
318	case 256:
319	mode2 = (0x0 << 5);
320	break;
321	default:
322	dev_err(codec->dev, "Error: unsupported fs=%d\n", fs);
323	return -EINVAL;
324	}
325
326	snd_soc_update_bits(codec, AK4641_MODE2, (0x3 << 5), mode2);
327
328	/* Update de-emphasis filter for the new rate */
329	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
330	ak4641->playback_fs = rate;
331	ak4641_set_deemph(codec);
332	};
333
334	return 0;
335	}
336
337	static int ak4641_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai,
338	unsigned int fmt)
339	{
340	struct snd_soc_codec *codec = codec_dai->codec;
341	u8 btif;
16aff769	342	int ret;
00d27010 DA	343
	344	/* interface format */
	345	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	346	case SND_SOC_DAIFMT_I2S:
	347	btif = (0x3 << 5);
	348	break;
	349	case SND_SOC_DAIFMT_LEFT_J:
	350	btif = (0x2 << 5);
	351	break;
	352	case SND_SOC_DAIFMT_DSP_A: /* MSB after FRM */
	353	btif = (0x0 << 5);
	354	break;
	355	case SND_SOC_DAIFMT_DSP_B: /* MSB during FRM */
	356	btif = (0x1 << 5);
	357	break;
	358	default:
	359	return -EINVAL;
	360	}
	361
16aff769 AL	362	ret = snd_soc_update_bits(codec, AK4641_BTIF, (0x3 << 5), btif);
	363	if (ret < 0)
	364	return ret;
	365
	366	return 0;
00d27010 DA	367	}
	368
	369	static int ak4641_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai,
	370	unsigned int fmt)
	371	{
	372	struct snd_soc_codec *codec = codec_dai->codec;
	373	u8 mode1 = 0;
	374
	375	/* interface format */
	376	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	377	case SND_SOC_DAIFMT_I2S:
	378	mode1 = 0x02;
	379	break;
	380	case SND_SOC_DAIFMT_LEFT_J:
	381	mode1 = 0x01;
	382	break;
	383	default:
	384	return -EINVAL;
	385	}
	386
	387	return snd_soc_write(codec, AK4641_MODE1, mode1);
	388	}
	389
	390	static int ak4641_mute(struct snd_soc_dai *dai, int mute)
	391	{
	392	struct snd_soc_codec *codec = dai->codec;
	393
	394	return snd_soc_update_bits(codec, AK4641_DAC, 0x20, mute ? 0x20 : 0);
	395	}
	396
	397	static int ak4641_set_bias_level(struct snd_soc_codec *codec,
	398	enum snd_soc_bias_level level)
	399	{
	400	struct ak4641_platform_data *pdata = codec->dev->platform_data;
	401	int ret;
	402
	403	switch (level) {
	404	case SND_SOC_BIAS_ON:
	405	/* unmute */
	406	snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0);
	407	break;
	408	case SND_SOC_BIAS_PREPARE:
	409	/* mute */
	410	snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0x20);
	411	break;
	412	case SND_SOC_BIAS_STANDBY:
	413	if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
	414	if (pdata && gpio_is_valid(pdata->gpio_power))
	415	gpio_set_value(pdata->gpio_power, 1);
	416	mdelay(1);
	417	if (pdata && gpio_is_valid(pdata->gpio_npdn))
	418	gpio_set_value(pdata->gpio_npdn, 1);
	419	mdelay(1);
	420
	421	ret = snd_soc_cache_sync(codec);
	422	if (ret) {
	423	dev_err(codec->dev,
	424	"Failed to sync cache: %d\n", ret);
	425	return ret;
	426	}
	427	}
	428	snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0x80);
	429	snd_soc_update_bits(codec, AK4641_PM2, 0x80, 0);
	430	break;
431	case SND_SOC_BIAS_OFF:
432	snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0);
433	if (pdata && gpio_is_valid(pdata->gpio_npdn))
434	gpio_set_value(pdata->gpio_npdn, 0);
435	if (pdata && gpio_is_valid(pdata->gpio_power))
436	gpio_set_value(pdata->gpio_power, 0);
437	codec->cache_sync = 1;
438	break;
439	}
440	codec->dapm.bias_level = level;
441	return 0;
442	}
443
444	#define AK4641_RATES (SNDRV_PCM_RATE_8000_48000)
445	#define AK4641_RATES_BT (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \|\
446	SNDRV_PCM_RATE_16000)
447	#define AK4641_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
448
85e7652d	449	static const struct snd_soc_dai_ops ak4641_i2s_dai_ops = {
00d27010 DA	450	.hw_params = ak4641_i2s_hw_params,
	451	.set_fmt = ak4641_i2s_set_dai_fmt,
	452	.digital_mute = ak4641_mute,
	453	.set_sysclk = ak4641_set_dai_sysclk,
	454	};
	455
85e7652d	456	static const struct snd_soc_dai_ops ak4641_pcm_dai_ops = {
00d27010 DA	457	.hw_params = NULL, /* rates are controlled by BT chip */
	458	.set_fmt = ak4641_pcm_set_dai_fmt,
	459	.digital_mute = ak4641_mute,
	460	.set_sysclk = ak4641_set_dai_sysclk,
	461	};
	462
37aa716a	463	static struct snd_soc_dai_driver ak4641_dai[] = {
00d27010 DA	464	{
	465	.name = "ak4641-hifi",
	466	.id = 1,
	467	.playback = {
	468	.stream_name = "HiFi Playback",
	469	.channels_min = 1,
	470	.channels_max = 2,
	471	.rates = AK4641_RATES,
	472	.formats = AK4641_FORMATS,
	473	},
	474	.capture = {
	475	.stream_name = "HiFi Capture",
	476	.channels_min = 1,
	477	.channels_max = 2,
	478	.rates = AK4641_RATES,
	479	.formats = AK4641_FORMATS,
	480	},
	481	.ops = &ak4641_i2s_dai_ops,
	482	.symmetric_rates = 1,
	483	},
	484	{
	485	.name = "ak4641-voice",
	486	.id = 1,
	487	.playback = {
	488	.stream_name = "Voice Playback",
	489	.channels_min = 1,
	490	.channels_max = 1,
	491	.rates = AK4641_RATES_BT,
	492	.formats = AK4641_FORMATS,
	493	},
	494	.capture = {
	495	.stream_name = "Voice Capture",
	496	.channels_min = 1,
	497	.channels_max = 1,
	498	.rates = AK4641_RATES_BT,
	499	.formats = AK4641_FORMATS,
	500	},
	501	.ops = &ak4641_pcm_dai_ops,
	502	.symmetric_rates = 1,
	503	},
	504	};
	505
84b315ee	506	static int ak4641_suspend(struct snd_soc_codec *codec)
00d27010 DA	507	{
	508	ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF);
	509	return 0;
	510	}
	511
	512	static int ak4641_resume(struct snd_soc_codec *codec)
	513	{
	514	ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	515	return 0;
	516	}
	517
	518	static int ak4641_probe(struct snd_soc_codec *codec)
	519	{
	520	struct ak4641_platform_data *pdata = codec->dev->platform_data;
	521	int ret;
	522
	523
	524	if (pdata) {
	525	if (gpio_is_valid(pdata->gpio_power)) {
	526	ret = gpio_request_one(pdata->gpio_power,
	527	GPIOF_OUT_INIT_LOW, "ak4641 power");
	528	if (ret)
	529	goto err_out;
	530	}
	531	if (gpio_is_valid(pdata->gpio_npdn)) {
	532	ret = gpio_request_one(pdata->gpio_npdn,
	533	GPIOF_OUT_INIT_LOW, "ak4641 npdn");
	534	if (ret)
	535	goto err_gpio;
	536
	537	udelay(1); /* > 150 ns */
	538	gpio_set_value(pdata->gpio_npdn, 1);
	539	}
	540	}
	541
	542	ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C);
	543	if (ret != 0) {
	544	dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
	545	goto err_register;
	546	}
	547
	548	/* power on device */
	549	ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	550
	551	return 0;
	552
	553	err_register:
	554	if (pdata) {
	555	if (gpio_is_valid(pdata->gpio_power))
	556	gpio_set_value(pdata->gpio_power, 0);
	557	if (gpio_is_valid(pdata->gpio_npdn))
	558	gpio_free(pdata->gpio_npdn);
	559	}
	560	err_gpio:
	561	if (pdata && gpio_is_valid(pdata->gpio_power))
	562	gpio_free(pdata->gpio_power);
	563	err_out:
	564	return ret;
	565	}
	566
	567	static int ak4641_remove(struct snd_soc_codec *codec)
	568	{
	569	struct ak4641_platform_data *pdata = codec->dev->platform_data;
	570
571	ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF);
572
573	if (pdata) {
574	if (gpio_is_valid(pdata->gpio_power)) {
575	gpio_set_value(pdata->gpio_power, 0);
576	gpio_free(pdata->gpio_power);
577	}
578	if (gpio_is_valid(pdata->gpio_npdn))
579	gpio_free(pdata->gpio_npdn);
580	}
581	return 0;
582	}
583
584
585	static struct snd_soc_codec_driver soc_codec_dev_ak4641 = {
586	.probe = ak4641_probe,
587	.remove = ak4641_remove,
588	.suspend = ak4641_suspend,
589	.resume = ak4641_resume,
590	.controls = ak4641_snd_controls,
591	.num_controls = ARRAY_SIZE(ak4641_snd_controls),
592	.dapm_widgets = ak4641_dapm_widgets,
593	.num_dapm_widgets = ARRAY_SIZE(ak4641_dapm_widgets),
594	.dapm_routes = ak4641_audio_map,
595	.num_dapm_routes = ARRAY_SIZE(ak4641_audio_map),
596	.set_bias_level = ak4641_set_bias_level,
597	.reg_cache_size = ARRAY_SIZE(ak4641_reg),
598	.reg_word_size = sizeof(u8),
599	.reg_cache_default = ak4641_reg,
600	.reg_cache_step = 1,
601	};
602
603
604	static int __devinit ak4641_i2c_probe(struct i2c_client *i2c,
605	const struct i2c_device_id *id)
606	{
607	struct ak4641_priv *ak4641;
608	int ret;
609
4273fcfd AL	610	ak4641 = devm_kzalloc(&i2c->dev, sizeof(struct ak4641_priv),
4273fcfd AL	611	GFP_KERNEL);
00d27010 DA	612	if (!ak4641)
	613	return -ENOMEM;
	614
	615	i2c_set_clientdata(i2c, ak4641);
	616
	617	ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak4641,
	618	ak4641_dai, ARRAY_SIZE(ak4641_dai));
00d27010 DA	619	return ret;
	620	}
	621
	622	static int __devexit ak4641_i2c_remove(struct i2c_client *i2c)
	623	{
	624	snd_soc_unregister_codec(&i2c->dev);
00d27010 DA	625	return 0;
	626	}
	627
	628	static const struct i2c_device_id ak4641_i2c_id[] = {
	629	{ "ak4641", 0 },
	630	{ }
	631	};
	632	MODULE_DEVICE_TABLE(i2c, ak4641_i2c_id);
	633
	634	static struct i2c_driver ak4641_i2c_driver = {
	635	.driver = {
	636	.name = "ak4641",
	637	.owner = THIS_MODULE,
	638	},
	639	.probe = ak4641_i2c_probe,
	640	.remove = __devexit_p(ak4641_i2c_remove),
	641	.id_table = ak4641_i2c_id,
	642	};
	643
a0abacd8	644	module_i2c_driver(ak4641_i2c_driver);
00d27010 DA	645
	646	MODULE_DESCRIPTION("SoC AK4641 driver");
	647	MODULE_AUTHOR("Harald Welte <laforge@gnufiish.org>");
	648	MODULE_LICENSE("GPL");