[deliverable/linux.git] / sound / soc / codecs / ak4535.c

/*
 * ak4535.c  --  AK4535 ALSA Soc Audio driver
 *
 * Copyright 2005 Openedhand Ltd.
 *
 * Author: Richard Purdie <richard@openedhand.com>
 *
 * Based on wm8753.c by Liam Girdwood
 *
 * 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/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/regmap.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 "ak4535.h"

/* codec private data */
struct ak4535_priv {
	struct regmap *regmap;
	unsigned int sysclk;
};

/*
 * ak4535 register cache
 */
static const struct reg_default ak4535_reg_defaults[] = {
	{ 0, 0x00 },
	{ 1, 0x80 },
	{ 2, 0x00 },
	{ 3, 0x03 },
	{ 4, 0x02 },
	{ 5, 0x00 },
	{ 6, 0x11 },
	{ 7, 0x01 },
	{ 8, 0x00 },
	{ 9, 0x40 },
	{ 10, 0x36 },
	{ 11, 0x10 },
	{ 12, 0x00 },
	{ 13, 0x00 },
	{ 14, 0x57 },
};

static bool ak4535_volatile(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case AK4535_STATUS:
		return true;
	default:
		return false;
	}
}

static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
static const char *ak4535_mic_select[] = {"Internal", "External"};

static const struct soc_enum ak4535_enum[] = {
	SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
	SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
	SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
	SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
	SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
};

static const struct snd_kcontrol_new ak4535_snd_controls[] = {
	SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
	SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
	SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
	SOC_ENUM("Headphone Output", ak4535_enum[2]),
	SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
	SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
	SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
	SOC_ENUM("Mic Select", ak4535_enum[4]),
	SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
	SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
	SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
	SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
	SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
	SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
	SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
	SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
	SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
	SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
	SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
};

/* Mono 1 Mixer */
static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
	SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
	SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
};

/* Stereo Mixer */
static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
	SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
	SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
	SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
};

/* Input Mixer */
static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
	SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
	SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
};

/* Input mux */
static const struct snd_kcontrol_new ak4535_input_mux_control =
	SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);

/* HP L switch */
static const struct snd_kcontrol_new ak4535_hpl_control =
	SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);

/* HP R switch */
static const struct snd_kcontrol_new ak4535_hpr_control =
	SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);

/* mono 2 switch */
static const struct snd_kcontrol_new ak4535_mono2_control =
	SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);

/* Line out switch */
static const struct snd_kcontrol_new ak4535_line_control =
	SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);

/* ak4535 dapm widgets */
static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
	SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
		&ak4535_stereo_mixer_controls[0],
		ARRAY_SIZE(ak4535_stereo_mixer_controls)),
	SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
		&ak4535_mono1_mixer_controls[0],
		ARRAY_SIZE(ak4535_mono1_mixer_controls)),
	SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
		&ak4535_input_mixer_controls[0],
		ARRAY_SIZE(ak4535_input_mixer_controls)),
	SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
		&ak4535_input_mux_control),
	SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
	SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
		&ak4535_mono2_control),
	/* speaker powersave bit */
	SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
	SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
		&ak4535_line_control),
	SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
		&ak4535_hpl_control),
	SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
		&ak4535_hpr_control),
	SND_SOC_DAPM_OUTPUT("LOUT"),
	SND_SOC_DAPM_OUTPUT("HPL"),
	SND_SOC_DAPM_OUTPUT("ROUT"),
	SND_SOC_DAPM_OUTPUT("HPR"),
	SND_SOC_DAPM_OUTPUT("SPP"),
	SND_SOC_DAPM_OUTPUT("SPN"),
	SND_SOC_DAPM_OUTPUT("MOUT1"),
	SND_SOC_DAPM_OUTPUT("MOUT2"),
	SND_SOC_DAPM_OUTPUT("MICOUT"),
	SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
	SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
	SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
	SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
	SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
	SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
	SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
	SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),

	SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
	SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
	SND_SOC_DAPM_INPUT("MICIN"),
	SND_SOC_DAPM_INPUT("MICEXT"),
	SND_SOC_DAPM_INPUT("AUX"),
	SND_SOC_DAPM_INPUT("MIN"),
	SND_SOC_DAPM_INPUT("AIN"),
};

static const struct snd_soc_dapm_route ak4535_audio_map[] = {
	/*stereo mixer */
	{"Stereo Mixer", "Playback Switch", "DAC"},
	{"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
	{"Stereo Mixer", "Aux Bypass Switch", "AUX In"},

	/* mono1 mixer */
	{"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
	{"Mono1 Mixer", "Mono Playback Switch", "DAC"},

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

	/* line out */
	{"LOUT", NULL, "Line Out Enable"},
	{"ROUT", NULL, "Line Out Enable"},
	{"Line Out Enable", "Switch", "Line Out"},
	{"Line Out", NULL, "Stereo Mixer"},

	/* mono1 out */
	{"MOUT1", NULL, "Mono Out"},
	{"Mono Out", NULL, "Mono1 Mixer"},

	/* left HP */
	{"HPL", NULL, "Left HP Enable"},
	{"Left HP Enable", "Switch", "HP L Amp"},
	{"HP L Amp", NULL, "Stereo Mixer"},

	/* right HP */
	{"HPR", NULL, "Right HP Enable"},
	{"Right HP Enable", "Switch", "HP R Amp"},
	{"HP R Amp", NULL, "Stereo Mixer"},

	/* speaker */
	{"SPP", NULL, "Speaker Enable"},
	{"SPN", NULL, "Speaker Enable"},
	{"Speaker Enable", "Switch", "Spk Amp"},
	{"Spk Amp", NULL, "MIN"},

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

	/* 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 ak4535_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 ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);

	ak4535->sysclk = freq;
	return 0;
}

static int ak4535_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 ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
	u8 mode2 = snd_soc_read(codec, AK4535_MODE2) & ~(0x3 << 5);
	int rate = params_rate(params), fs = 256;

	if (rate)
		fs = ak4535->sysclk / rate;

	/* set fs */
	switch (fs) {
	case 1024:
		mode2 |= (0x2 << 5);
		break;
	case 512:
		mode2 |= (0x1 << 5);
		break;
	case 256:
		break;
	}

	/* set rate */
	snd_soc_write(codec, AK4535_MODE2, mode2);
	return 0;
}

static int ak4535_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 = 0x0002;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		mode1 = 0x0001;
		break;
	default:
		return -EINVAL;
	}

	/* use 32 fs for BCLK to save power */
	mode1 |= 0x4;

	snd_soc_write(codec, AK4535_MODE1, mode1);
	return 0;
}

static int ak4535_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;
	u16 mute_reg = snd_soc_read(codec, AK4535_DAC);
	if (!mute)
		snd_soc_write(codec, AK4535_DAC, mute_reg & ~0x20);
	else
		snd_soc_write(codec, AK4535_DAC, mute_reg | 0x20);
	return 0;
}

static int ak4535_set_bias_level(struct snd_soc_codec *codec,
	enum snd_soc_bias_level level)
{
	switch (level) {
	case SND_SOC_BIAS_ON:
		snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0);
		break;
	case SND_SOC_BIAS_PREPARE:
		snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0x20);
		break;
	case SND_SOC_BIAS_STANDBY:
		snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0x80);
		snd_soc_update_bits(codec, AK4535_PM2, 0x80, 0);
		break;
	case SND_SOC_BIAS_OFF:
		snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0);
		break;
	}
	codec->dapm.bias_level = level;
	return 0;
}

#define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
		SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
		SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)

static const struct snd_soc_dai_ops ak4535_dai_ops = {
	.hw_params	= ak4535_hw_params,
	.set_fmt	= ak4535_set_dai_fmt,
	.digital_mute	= ak4535_mute,
	.set_sysclk	= ak4535_set_dai_sysclk,
};

static struct snd_soc_dai_driver ak4535_dai = {
	.name = "ak4535-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 1,
		.channels_max = 2,
		.rates = AK4535_RATES,
		.formats = SNDRV_PCM_FMTBIT_S16_LE,},
	.capture = {
		.stream_name = "Capture",
		.channels_min = 1,
		.channels_max = 2,
		.rates = AK4535_RATES,
		.formats = SNDRV_PCM_FMTBIT_S16_LE,},
	.ops = &ak4535_dai_ops,
};

static int ak4535_suspend(struct snd_soc_codec *codec)
{
	ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
	return 0;
}

static int ak4535_resume(struct snd_soc_codec *codec)
{
	snd_soc_cache_sync(codec);
	ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	return 0;
}

static int ak4535_probe(struct snd_soc_codec *codec)
{
	struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
	int ret;

	codec->control_data = ak4535->regmap;
	ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
		return ret;
	}
	/* power on device */
	ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	snd_soc_add_codec_controls(codec, ak4535_snd_controls,
				ARRAY_SIZE(ak4535_snd_controls));
	return 0;
}

/* power down chip */
static int ak4535_remove(struct snd_soc_codec *codec)
{
	ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
	return 0;
}

static const struct regmap_config ak4535_regmap = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = AK4535_STATUS,
	.volatile_reg = ak4535_volatile,

	.cache_type = REGCACHE_RBTREE,
	.reg_defaults = ak4535_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(ak4535_reg_defaults),
};

static struct snd_soc_codec_driver soc_codec_dev_ak4535 = {
	.probe =	ak4535_probe,
	.remove =	ak4535_remove,
	.suspend =	ak4535_suspend,
	.resume =	ak4535_resume,
	.set_bias_level = ak4535_set_bias_level,
	.dapm_widgets = ak4535_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(ak4535_dapm_widgets),
	.dapm_routes = ak4535_audio_map,
	.num_dapm_routes = ARRAY_SIZE(ak4535_audio_map),
};

static __devinit int ak4535_i2c_probe(struct i2c_client *i2c,
				      const struct i2c_device_id *id)
{
	struct ak4535_priv *ak4535;
	int ret;

	ak4535 = devm_kzalloc(&i2c->dev, sizeof(struct ak4535_priv),
			      GFP_KERNEL);
	if (ak4535 == NULL)
		return -ENOMEM;

	ak4535->regmap = regmap_init_i2c(i2c, &ak4535_regmap);
	if (IS_ERR(ak4535->regmap)) {
		ret = PTR_ERR(ak4535->regmap);
		dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
		return ret;
	}

	i2c_set_clientdata(i2c, ak4535);

	ret = snd_soc_register_codec(&i2c->dev,
			&soc_codec_dev_ak4535, &ak4535_dai, 1);
	if (ret != 0)
		regmap_exit(ak4535->regmap);

	return ret;
}

static __devexit int ak4535_i2c_remove(struct i2c_client *client)
{
	struct ak4535_priv *ak4535 = i2c_get_clientdata(client);

	snd_soc_unregister_codec(&client->dev);
	regmap_exit(ak4535->regmap);
	return 0;
}

static const struct i2c_device_id ak4535_i2c_id[] = {
	{ "ak4535", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);

static struct i2c_driver ak4535_i2c_driver = {
	.driver = {
		.name = "ak4535",
		.owner = THIS_MODULE,
	},
	.probe =    ak4535_i2c_probe,
	.remove =   __devexit_p(ak4535_i2c_remove),
	.id_table = ak4535_i2c_id,
};

module_i2c_driver(ak4535_i2c_driver);

MODULE_DESCRIPTION("Soc AK4535 driver");
MODULE_AUTHOR("Richard Purdie");
MODULE_LICENSE("GPL");
Commit	Line	Data
796d2ca8 RP	1	/*
	2	* ak4535.c -- AK4535 ALSA Soc Audio driver
	3	*
	4	* Copyright 2005 Openedhand Ltd.
	5	*
	6	* Author: Richard Purdie <richard@openedhand.com>
	7	*
	8	* Based on wm8753.c by Liam Girdwood
	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
	15	#include <linux/module.h>
	16	#include <linux/moduleparam.h>
	17	#include <linux/init.h>
	18	#include <linux/delay.h>
	19	#include <linux/pm.h>
	20	#include <linux/i2c.h>
a1fa9213	21	#include <linux/regmap.h>
5a0e3ad6	22	#include <linux/slab.h>
796d2ca8 RP	23	#include <sound/core.h>
	24	#include <sound/pcm.h>
	25	#include <sound/pcm_params.h>
	26	#include <sound/soc.h>
796d2ca8 RP	27	#include <sound/initval.h>
	28
	29	#include "ak4535.h"
	30
796d2ca8 RP	31	/* codec private data */
796d2ca8 RP	32	struct ak4535_priv {
a1fa9213	33	struct regmap *regmap;
796d2ca8 RP	34	unsigned int sysclk;
	35	};
	36
	37	/*
	38	* ak4535 register cache
	39	*/
a1fa9213 MB	40	static const struct reg_default ak4535_reg_defaults[] = {
	41	{ 0, 0x00 },
	42	{ 1, 0x80 },
	43	{ 2, 0x00 },
	44	{ 3, 0x03 },
	45	{ 4, 0x02 },
	46	{ 5, 0x00 },
	47	{ 6, 0x11 },
	48	{ 7, 0x01 },
	49	{ 8, 0x00 },
	50	{ 9, 0x40 },
	51	{ 10, 0x36 },
	52	{ 11, 0x10 },
	53	{ 12, 0x00 },
	54	{ 13, 0x00 },
	55	{ 14, 0x57 },
796d2ca8 RP	56	};
796d2ca8 RP	57
a1fa9213 MB	58	static bool ak4535_volatile(struct device *dev, unsigned int reg)
	59	{
	60	switch (reg) {
	61	case AK4535_STATUS:
	62	return true;
	63	default:
	64	return false;
	65	}
	66	}
	67
796d2ca8 RP	68	static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
	69	static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
	70	static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
	71	static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
	72	static const char *ak4535_mic_select[] = {"Internal", "External"};
	73
	74	static const struct soc_enum ak4535_enum[] = {
	75	SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
	76	SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
	77	SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
	78	SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
	79	SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
	80	};
	81
	82	static const struct snd_kcontrol_new ak4535_snd_controls[] = {
	83	SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
	84	SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
	85	SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
	86	SOC_ENUM("Headphone Output", ak4535_enum[2]),
	87	SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
	88	SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
	89	SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
	90	SOC_ENUM("Mic Select", ak4535_enum[4]),
	91	SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
	92	SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
	93	SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
	94	SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
	95	SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
	96	SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
	97	SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
	98	SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
	99	SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
	100	SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
	101	SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
	102	};
	103
796d2ca8 RP	104	/* Mono 1 Mixer */
	105	static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
	106	SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
	107	SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
	108	};
	109
	110	/* Stereo Mixer */
	111	static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
	112	SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
	113	SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
	114	SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
	115	};
	116
	117	/* Input Mixer */
	118	static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
	119	SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
	120	SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
	121	};
	122
	123	/* Input mux */
	124	static const struct snd_kcontrol_new ak4535_input_mux_control =
	125	SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
	126
	127	/* HP L switch */
	128	static const struct snd_kcontrol_new ak4535_hpl_control =
	129	SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
	130
	131	/* HP R switch */
	132	static const struct snd_kcontrol_new ak4535_hpr_control =
	133	SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
	134
	135	/* mono 2 switch */
	136	static const struct snd_kcontrol_new ak4535_mono2_control =
	137	SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
	138
	139	/* Line out switch */
	140	static const struct snd_kcontrol_new ak4535_line_control =
	141	SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
	142
	143	/* ak4535 dapm widgets */
	144	static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
	145	SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
	146	&ak4535_stereo_mixer_controls[0],
	147	ARRAY_SIZE(ak4535_stereo_mixer_controls)),
	148	SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
	149	&ak4535_mono1_mixer_controls[0],
	150	ARRAY_SIZE(ak4535_mono1_mixer_controls)),
	151	SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
	152	&ak4535_input_mixer_controls[0],
	153	ARRAY_SIZE(ak4535_input_mixer_controls)),
	154	SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
	155	&ak4535_input_mux_control),
	156	SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
	157	SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
	158	&ak4535_mono2_control),
	159	/* speaker powersave bit */
	160	SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
	161	SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
	162	&ak4535_line_control),
	163	SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
	164	&ak4535_hpl_control),
	165	SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
	166	&ak4535_hpr_control),
	167	SND_SOC_DAPM_OUTPUT("LOUT"),
168	SND_SOC_DAPM_OUTPUT("HPL"),
169	SND_SOC_DAPM_OUTPUT("ROUT"),
170	SND_SOC_DAPM_OUTPUT("HPR"),
171	SND_SOC_DAPM_OUTPUT("SPP"),
172	SND_SOC_DAPM_OUTPUT("SPN"),
173	SND_SOC_DAPM_OUTPUT("MOUT1"),
174	SND_SOC_DAPM_OUTPUT("MOUT2"),
175	SND_SOC_DAPM_OUTPUT("MICOUT"),
176	SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
177	SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
178	SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
179	SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
180	SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
181	SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
182	SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
183	SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
184
185	SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
186	SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
187	SND_SOC_DAPM_INPUT("MICIN"),
188	SND_SOC_DAPM_INPUT("MICEXT"),
189	SND_SOC_DAPM_INPUT("AUX"),
190	SND_SOC_DAPM_INPUT("MIN"),
191	SND_SOC_DAPM_INPUT("AIN"),
192	};
193
b63c963d	194	static const struct snd_soc_dapm_route ak4535_audio_map[] = {
796d2ca8 RP	195	/stereo mixer /
	196	{"Stereo Mixer", "Playback Switch", "DAC"},
	197	{"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
	198	{"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
	199
	200	/* mono1 mixer */
	201	{"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
	202	{"Mono1 Mixer", "Mono Playback Switch", "DAC"},
	203
	204	/* Mic */
	205	{"Mic", NULL, "AIN"},
	206	{"Input Mux", "Internal", "Mic Int Bias"},
	207	{"Input Mux", "External", "Mic Ext Bias"},
	208	{"Mic Int Bias", NULL, "MICIN"},
	209	{"Mic Ext Bias", NULL, "MICEXT"},
	210	{"MICOUT", NULL, "Input Mux"},
	211
	212	/* line out */
	213	{"LOUT", NULL, "Line Out Enable"},
	214	{"ROUT", NULL, "Line Out Enable"},
	215	{"Line Out Enable", "Switch", "Line Out"},
	216	{"Line Out", NULL, "Stereo Mixer"},
	217
	218	/* mono1 out */
	219	{"MOUT1", NULL, "Mono Out"},
	220	{"Mono Out", NULL, "Mono1 Mixer"},
	221
	222	/* left HP */
	223	{"HPL", NULL, "Left HP Enable"},
	224	{"Left HP Enable", "Switch", "HP L Amp"},
	225	{"HP L Amp", NULL, "Stereo Mixer"},
	226
	227	/* right HP */
	228	{"HPR", NULL, "Right HP Enable"},
	229	{"Right HP Enable", "Switch", "HP R Amp"},
	230	{"HP R Amp", NULL, "Stereo Mixer"},
	231
	232	/* speaker */
	233	{"SPP", NULL, "Speaker Enable"},
	234	{"SPN", NULL, "Speaker Enable"},
	235	{"Speaker Enable", "Switch", "Spk Amp"},
	236	{"Spk Amp", NULL, "MIN"},
	237
	238	/* mono 2 */
	239	{"MOUT2", NULL, "Mono 2 Enable"},
	240	{"Mono 2 Enable", "Switch", "Stereo Mixer"},
	241
	242	/* Aux In */
	243	{"Aux In", NULL, "AUX"},
	244
	245	/* ADC */
	246	{"ADC", NULL, "Input Mixer"},
	247	{"Input Mixer", "Mic Capture Switch", "Mic"},
	248	{"Input Mixer", "Aux Capture Switch", "Aux In"},
	249	};
	250
e550e17f	251	static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
796d2ca8 RP	252	int clk_id, unsigned int freq, int dir)
	253	{
	254	struct snd_soc_codec *codec = codec_dai->codec;
b2c812e2	255	struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
796d2ca8 RP	256
	257	ak4535->sysclk = freq;
	258	return 0;
	259	}
	260
	261	static int ak4535_hw_params(struct snd_pcm_substream *substream,
dee89c4d MB	262	struct snd_pcm_hw_params *params,
dee89c4d MB	263	struct snd_soc_dai *dai)
796d2ca8 RP	264	{
796d2ca8 RP	265	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad	266	struct snd_soc_codec *codec = rtd->codec;
b2c812e2	267	struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
3b184503	268	u8 mode2 = snd_soc_read(codec, AK4535_MODE2) & ~(0x3 << 5);
796d2ca8 RP	269	int rate = params_rate(params), fs = 256;
	270
	271	if (rate)
	272	fs = ak4535->sysclk / rate;
	273
	274	/* set fs */
	275	switch (fs) {
	276	case 1024:
	277	mode2 \|= (0x2 << 5);
	278	break;
	279	case 512:
	280	mode2 \|= (0x1 << 5);
	281	break;
	282	case 256:
	283	break;
	284	}
	285
	286	/* set rate */
3b184503	287	snd_soc_write(codec, AK4535_MODE2, mode2);
796d2ca8 RP	288	return 0;
	289	}
	290
e550e17f	291	static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
796d2ca8 RP	292	unsigned int fmt)
	293	{
	294	struct snd_soc_codec *codec = codec_dai->codec;
	295	u8 mode1 = 0;
	296
	297	/* interface format */
	298	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	299	case SND_SOC_DAIFMT_I2S:
	300	mode1 = 0x0002;
	301	break;
	302	case SND_SOC_DAIFMT_LEFT_J:
	303	mode1 = 0x0001;
	304	break;
	305	default:
	306	return -EINVAL;
	307	}
	308
	309	/* use 32 fs for BCLK to save power */
	310	mode1 \|= 0x4;
	311
3b184503	312	snd_soc_write(codec, AK4535_MODE1, mode1);
796d2ca8 RP	313	return 0;
	314	}
	315
e550e17f	316	static int ak4535_mute(struct snd_soc_dai *dai, int mute)
796d2ca8 RP	317	{
796d2ca8 RP	318	struct snd_soc_codec *codec = dai->codec;
3b184503	319	u16 mute_reg = snd_soc_read(codec, AK4535_DAC);
796d2ca8	320	if (!mute)
3b184503	321	snd_soc_write(codec, AK4535_DAC, mute_reg & ~0x20);
796d2ca8	322	else
3b184503	323	snd_soc_write(codec, AK4535_DAC, mute_reg \| 0x20);
796d2ca8 RP	324	return 0;
	325	}
	326
	327	static int ak4535_set_bias_level(struct snd_soc_codec *codec,
	328	enum snd_soc_bias_level level)
	329	{
796d2ca8 RP	330	switch (level) {
796d2ca8 RP	331	case SND_SOC_BIAS_ON:
3b184503	332	snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0);
796d2ca8 RP	333	break;
796d2ca8 RP	334	case SND_SOC_BIAS_PREPARE:
3b184503	335	snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0x20);
796d2ca8 RP	336	break;
796d2ca8 RP	337	case SND_SOC_BIAS_STANDBY:
3b184503 AL	338	snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0x80);
3b184503 AL	339	snd_soc_update_bits(codec, AK4535_PM2, 0x80, 0);
796d2ca8 RP	340	break;
796d2ca8 RP	341	case SND_SOC_BIAS_OFF:
3b184503	342	snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0);
796d2ca8 RP	343	break;
796d2ca8 RP	344	}
ce6120cc	345	codec->dapm.bias_level = level;
796d2ca8 RP	346	return 0;
	347	}
	348
	349	#define AK4535_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \|\
	350	SNDRV_PCM_RATE_16000 \| SNDRV_PCM_RATE_22050 \|\
	351	SNDRV_PCM_RATE_44100 \| SNDRV_PCM_RATE_48000)
	352
85e7652d	353	static const struct snd_soc_dai_ops ak4535_dai_ops = {
6335d055 EM	354	.hw_params = ak4535_hw_params,
	355	.set_fmt = ak4535_set_dai_fmt,
	356	.digital_mute = ak4535_mute,
	357	.set_sysclk = ak4535_set_dai_sysclk,
	358	};
	359
f0fba2ad LG	360	static struct snd_soc_dai_driver ak4535_dai = {
f0fba2ad LG	361	.name = "ak4535-hifi",
796d2ca8 RP	362	.playback = {
	363	.stream_name = "Playback",
	364	.channels_min = 1,
	365	.channels_max = 2,
	366	.rates = AK4535_RATES,
	367	.formats = SNDRV_PCM_FMTBIT_S16_LE,},
	368	.capture = {
	369	.stream_name = "Capture",
	370	.channels_min = 1,
	371	.channels_max = 2,
	372	.rates = AK4535_RATES,
	373	.formats = SNDRV_PCM_FMTBIT_S16_LE,},
6335d055	374	.ops = &ak4535_dai_ops,
796d2ca8	375	};
796d2ca8	376
84b315ee	377	static int ak4535_suspend(struct snd_soc_codec *codec)
796d2ca8	378	{
796d2ca8 RP	379	ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
	380	return 0;
	381	}
	382
f0fba2ad	383	static int ak4535_resume(struct snd_soc_codec *codec)
796d2ca8	384	{
3b184503	385	snd_soc_cache_sync(codec);
796d2ca8	386	ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
796d2ca8 RP	387	return 0;
	388	}
	389
f0fba2ad	390	static int ak4535_probe(struct snd_soc_codec *codec)
796d2ca8	391	{
f0fba2ad	392	struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
3b184503	393	int ret;
796d2ca8	394
a1fa9213 MB	395	codec->control_data = ak4535->regmap;
a1fa9213 MB	396	ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP);
3b184503 AL	397	if (ret < 0) {
	398	dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
	399	return ret;
	400	}
796d2ca8 RP	401	/* power on device */
	402	ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	403
022658be	404	snd_soc_add_codec_controls(codec, ak4535_snd_controls,
3e8e1952	405	ARRAY_SIZE(ak4535_snd_controls));
f0fba2ad LG	406	return 0;
f0fba2ad LG	407	}
796d2ca8	408
f0fba2ad LG	409	/* power down chip */
	410	static int ak4535_remove(struct snd_soc_codec *codec)
	411	{
	412	ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
	413	return 0;
796d2ca8 RP	414	}
796d2ca8 RP	415
a1fa9213 MB	416	static const struct regmap_config ak4535_regmap = {
	417	.reg_bits = 8,
	418	.val_bits = 8,
	419
	420	.max_register = AK4535_STATUS,
	421	.volatile_reg = ak4535_volatile,
	422
	423	.cache_type = REGCACHE_RBTREE,
	424	.reg_defaults = ak4535_reg_defaults,
	425	.num_reg_defaults = ARRAY_SIZE(ak4535_reg_defaults),
	426	};
	427
f0fba2ad LG	428	static struct snd_soc_codec_driver soc_codec_dev_ak4535 = {
	429	.probe = ak4535_probe,
	430	.remove = ak4535_remove,
	431	.suspend = ak4535_suspend,
	432	.resume = ak4535_resume,
f0fba2ad	433	.set_bias_level = ak4535_set_bias_level,
b63c963d LG	434	.dapm_widgets = ak4535_dapm_widgets,
	435	.num_dapm_widgets = ARRAY_SIZE(ak4535_dapm_widgets),
	436	.dapm_routes = ak4535_audio_map,
	437	.num_dapm_routes = ARRAY_SIZE(ak4535_audio_map),
f0fba2ad	438	};
796d2ca8	439
f0fba2ad LG	440	static __devinit int ak4535_i2c_probe(struct i2c_client *i2c,
f0fba2ad LG	441	const struct i2c_device_id *id)
796d2ca8	442	{
f0fba2ad	443	struct ak4535_priv *ak4535;
796d2ca8 RP	444	int ret;
796d2ca8 RP	445
7246492d AL	446	ak4535 = devm_kzalloc(&i2c->dev, sizeof(struct ak4535_priv),
7246492d AL	447	GFP_KERNEL);
f0fba2ad LG	448	if (ak4535 == NULL)
f0fba2ad LG	449	return -ENOMEM;
796d2ca8	450
a1fa9213 MB	451	ak4535->regmap = regmap_init_i2c(i2c, &ak4535_regmap);
	452	if (IS_ERR(ak4535->regmap)) {
	453	ret = PTR_ERR(ak4535->regmap);
	454	dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
	455	return ret;
	456	}
	457
f0fba2ad	458	i2c_set_clientdata(i2c, ak4535);
796d2ca8	459
f0fba2ad LG	460	ret = snd_soc_register_codec(&i2c->dev,
f0fba2ad LG	461	&soc_codec_dev_ak4535, &ak4535_dai, 1);
a1fa9213 MB	462	if (ret != 0)
	463	regmap_exit(ak4535->regmap);
	464
796d2ca8 RP	465	return ret;
	466	}
	467
f0fba2ad	468	static __devexit int ak4535_i2c_remove(struct i2c_client *client)
796d2ca8	469	{
a1fa9213 MB	470	struct ak4535_priv *ak4535 = i2c_get_clientdata(client);
a1fa9213 MB	471
f0fba2ad	472	snd_soc_unregister_codec(&client->dev);
a1fa9213	473	regmap_exit(ak4535->regmap);
796d2ca8 RP	474	return 0;
	475	}
	476
d28d2713 JD	477	static const struct i2c_device_id ak4535_i2c_id[] = {
	478	{ "ak4535", 0 },
	479	{ }
	480	};
	481	MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
796d2ca8	482
796d2ca8 RP	483	static struct i2c_driver ak4535_i2c_driver = {
796d2ca8 RP	484	.driver = {
d69280be	485	.name = "ak4535",
796d2ca8 RP	486	.owner = THIS_MODULE,
796d2ca8 RP	487	},
d28d2713	488	.probe = ak4535_i2c_probe,
f0fba2ad	489	.remove = __devexit_p(ak4535_i2c_remove),
d28d2713	490	.id_table = ak4535_i2c_id,
796d2ca8	491	};
796d2ca8	492
b08c5764	493	module_i2c_driver(ak4535_i2c_driver);
64089b84	494
796d2ca8 RP	495	MODULE_DESCRIPTION("Soc AK4535 driver");
	496	MODULE_AUTHOR("Richard Purdie");
	497	MODULE_LICENSE("GPL");