[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/platform_device.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"

#define AK4535_VERSION "0.3"

/* codec private data */
struct ak4535_priv {
	unsigned int sysclk;
	enum snd_soc_control_type control_type;
};

/*
 * ak4535 register cache
 */
static const u8 ak4535_reg[AK4535_CACHEREGNUM] = {
	0x00, 0x80, 0x00, 0x03,
	0x02, 0x00, 0x11, 0x01,
	0x00, 0x40, 0x36, 0x10,
	0x00, 0x00, 0x57, 0x00,
};

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 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, pm_message_t state)
{
	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;

	printk(KERN_INFO "AK4535 Audio Codec %s", AK4535_VERSION);

	ret = snd_soc_codec_set_cache_io(codec, 8, 8, ak4535->control_type);
	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_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 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,
	.reg_cache_size = ARRAY_SIZE(ak4535_reg),
	.reg_word_size = sizeof(u8),
	.reg_cache_default = ak4535_reg,
	.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),
};

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int ak4535_i2c_probe(struct i2c_client *i2c,
				      const struct i2c_device_id *id)
{
	struct ak4535_priv *ak4535;
	int ret;

	ak4535 = kzalloc(sizeof(struct ak4535_priv), GFP_KERNEL);
	if (ak4535 == NULL)
		return -ENOMEM;

	i2c_set_clientdata(i2c, ak4535);
	ak4535->control_type = SND_SOC_I2C;

	ret = snd_soc_register_codec(&i2c->dev,
			&soc_codec_dev_ak4535, &ak4535_dai, 1);
	if (ret < 0)
		kfree(ak4535);
	return ret;
}

static __devexit int ak4535_i2c_remove(struct i2c_client *client)
{
	snd_soc_unregister_codec(&client->dev);
	kfree(i2c_get_clientdata(client));
	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-codec",
		.owner = THIS_MODULE,
	},
	.probe =    ak4535_i2c_probe,
	.remove =   __devexit_p(ak4535_i2c_remove),
	.id_table = ak4535_i2c_id,
};
#endif

static int __init ak4535_modinit(void)
{
	int ret = 0;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
	ret = i2c_add_driver(&ak4535_i2c_driver);
	if (ret != 0) {
		printk(KERN_ERR "Failed to register AK4535 I2C driver: %d\n",
		       ret);
	}
#endif
	return ret;
}
module_init(ak4535_modinit);

static void __exit ak4535_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
	i2c_del_driver(&ak4535_i2c_driver);
#endif
}
module_exit(ak4535_exit);

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>
	21	#include <linux/platform_device.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	#define AK4535_VERSION "0.3"
796d2ca8 RP	32
796d2ca8 RP	33	/* codec private data */
	34	struct ak4535_priv {
	35	unsigned int sysclk;
f0fba2ad	36	enum snd_soc_control_type control_type;
796d2ca8 RP	37	};
	38
	39	/*
	40	* ak4535 register cache
	41	*/
7c04241a AL	42	static const u8 ak4535_reg[AK4535_CACHEREGNUM] = {
	43	0x00, 0x80, 0x00, 0x03,
	44	0x02, 0x00, 0x11, 0x01,
	45	0x00, 0x40, 0x36, 0x10,
	46	0x00, 0x00, 0x57, 0x00,
796d2ca8 RP	47	};
796d2ca8 RP	48
796d2ca8 RP	49	static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
	50	static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
	51	static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
	52	static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
	53	static const char *ak4535_mic_select[] = {"Internal", "External"};
	54
	55	static const struct soc_enum ak4535_enum[] = {
	56	SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
	57	SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
	58	SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
	59	SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
	60	SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
	61	};
	62
	63	static const struct snd_kcontrol_new ak4535_snd_controls[] = {
	64	SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
	65	SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
	66	SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
	67	SOC_ENUM("Headphone Output", ak4535_enum[2]),
	68	SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
	69	SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
	70	SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
	71	SOC_ENUM("Mic Select", ak4535_enum[4]),
	72	SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
	73	SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
	74	SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
	75	SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
	76	SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
	77	SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
	78	SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
	79	SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
	80	SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
	81	SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
	82	SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
	83	};
	84
796d2ca8 RP	85	/* Mono 1 Mixer */
	86	static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
	87	SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
	88	SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
	89	};
	90
	91	/* Stereo Mixer */
	92	static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
	93	SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
	94	SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
	95	SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
	96	};
	97
	98	/* Input Mixer */
	99	static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
	100	SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
	101	SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
	102	};
	103
	104	/* Input mux */
	105	static const struct snd_kcontrol_new ak4535_input_mux_control =
	106	SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
	107
	108	/* HP L switch */
	109	static const struct snd_kcontrol_new ak4535_hpl_control =
	110	SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
	111
	112	/* HP R switch */
	113	static const struct snd_kcontrol_new ak4535_hpr_control =
	114	SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
	115
	116	/* mono 2 switch */
	117	static const struct snd_kcontrol_new ak4535_mono2_control =
	118	SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
	119
	120	/* Line out switch */
	121	static const struct snd_kcontrol_new ak4535_line_control =
	122	SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
	123
	124	/* ak4535 dapm widgets */
	125	static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
	126	SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
	127	&ak4535_stereo_mixer_controls[0],
	128	ARRAY_SIZE(ak4535_stereo_mixer_controls)),
	129	SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
	130	&ak4535_mono1_mixer_controls[0],
	131	ARRAY_SIZE(ak4535_mono1_mixer_controls)),
	132	SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
	133	&ak4535_input_mixer_controls[0],
	134	ARRAY_SIZE(ak4535_input_mixer_controls)),
	135	SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
	136	&ak4535_input_mux_control),
	137	SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
	138	SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
	139	&ak4535_mono2_control),
	140	/* speaker powersave bit */
	141	SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
	142	SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
	143	&ak4535_line_control),
	144	SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
	145	&ak4535_hpl_control),
	146	SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
	147	&ak4535_hpr_control),
	148	SND_SOC_DAPM_OUTPUT("LOUT"),
149	SND_SOC_DAPM_OUTPUT("HPL"),
150	SND_SOC_DAPM_OUTPUT("ROUT"),
151	SND_SOC_DAPM_OUTPUT("HPR"),
152	SND_SOC_DAPM_OUTPUT("SPP"),
153	SND_SOC_DAPM_OUTPUT("SPN"),
154	SND_SOC_DAPM_OUTPUT("MOUT1"),
155	SND_SOC_DAPM_OUTPUT("MOUT2"),
156	SND_SOC_DAPM_OUTPUT("MICOUT"),
157	SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
158	SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
159	SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
160	SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
161	SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
162	SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
163	SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
164	SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
165
166	SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
167	SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
168	SND_SOC_DAPM_INPUT("MICIN"),
169	SND_SOC_DAPM_INPUT("MICEXT"),
170	SND_SOC_DAPM_INPUT("AUX"),
171	SND_SOC_DAPM_INPUT("MIN"),
172	SND_SOC_DAPM_INPUT("AIN"),
173	};
174
b63c963d	175	static const struct snd_soc_dapm_route ak4535_audio_map[] = {
796d2ca8 RP	176	/stereo mixer /
	177	{"Stereo Mixer", "Playback Switch", "DAC"},
	178	{"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
	179	{"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
	180
	181	/* mono1 mixer */
	182	{"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
	183	{"Mono1 Mixer", "Mono Playback Switch", "DAC"},
	184
	185	/* Mic */
	186	{"Mic", NULL, "AIN"},
	187	{"Input Mux", "Internal", "Mic Int Bias"},
	188	{"Input Mux", "External", "Mic Ext Bias"},
	189	{"Mic Int Bias", NULL, "MICIN"},
	190	{"Mic Ext Bias", NULL, "MICEXT"},
	191	{"MICOUT", NULL, "Input Mux"},
	192
	193	/* line out */
	194	{"LOUT", NULL, "Line Out Enable"},
	195	{"ROUT", NULL, "Line Out Enable"},
	196	{"Line Out Enable", "Switch", "Line Out"},
	197	{"Line Out", NULL, "Stereo Mixer"},
	198
	199	/* mono1 out */
	200	{"MOUT1", NULL, "Mono Out"},
	201	{"Mono Out", NULL, "Mono1 Mixer"},
	202
	203	/* left HP */
	204	{"HPL", NULL, "Left HP Enable"},
	205	{"Left HP Enable", "Switch", "HP L Amp"},
	206	{"HP L Amp", NULL, "Stereo Mixer"},
	207
	208	/* right HP */
	209	{"HPR", NULL, "Right HP Enable"},
	210	{"Right HP Enable", "Switch", "HP R Amp"},
	211	{"HP R Amp", NULL, "Stereo Mixer"},
	212
	213	/* speaker */
	214	{"SPP", NULL, "Speaker Enable"},
	215	{"SPN", NULL, "Speaker Enable"},
	216	{"Speaker Enable", "Switch", "Spk Amp"},
	217	{"Spk Amp", NULL, "MIN"},
	218
	219	/* mono 2 */
	220	{"MOUT2", NULL, "Mono 2 Enable"},
	221	{"Mono 2 Enable", "Switch", "Stereo Mixer"},
	222
	223	/* Aux In */
	224	{"Aux In", NULL, "AUX"},
	225
	226	/* ADC */
	227	{"ADC", NULL, "Input Mixer"},
	228	{"Input Mixer", "Mic Capture Switch", "Mic"},
	229	{"Input Mixer", "Aux Capture Switch", "Aux In"},
	230	};
	231
e550e17f	232	static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
796d2ca8 RP	233	int clk_id, unsigned int freq, int dir)
	234	{
	235	struct snd_soc_codec *codec = codec_dai->codec;
b2c812e2	236	struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
796d2ca8 RP	237
	238	ak4535->sysclk = freq;
	239	return 0;
	240	}
	241
	242	static int ak4535_hw_params(struct snd_pcm_substream *substream,
dee89c4d MB	243	struct snd_pcm_hw_params *params,
dee89c4d MB	244	struct snd_soc_dai *dai)
796d2ca8 RP	245	{
796d2ca8 RP	246	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad	247	struct snd_soc_codec *codec = rtd->codec;
b2c812e2	248	struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
3b184503	249	u8 mode2 = snd_soc_read(codec, AK4535_MODE2) & ~(0x3 << 5);
796d2ca8 RP	250	int rate = params_rate(params), fs = 256;
	251
	252	if (rate)
	253	fs = ak4535->sysclk / rate;
	254
	255	/* set fs */
	256	switch (fs) {
	257	case 1024:
	258	mode2 \|= (0x2 << 5);
	259	break;
	260	case 512:
	261	mode2 \|= (0x1 << 5);
	262	break;
	263	case 256:
	264	break;
	265	}
	266
	267	/* set rate */
3b184503	268	snd_soc_write(codec, AK4535_MODE2, mode2);
796d2ca8 RP	269	return 0;
	270	}
	271
e550e17f	272	static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
796d2ca8 RP	273	unsigned int fmt)
	274	{
	275	struct snd_soc_codec *codec = codec_dai->codec;
	276	u8 mode1 = 0;
	277
	278	/* interface format */
	279	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	280	case SND_SOC_DAIFMT_I2S:
	281	mode1 = 0x0002;
	282	break;
	283	case SND_SOC_DAIFMT_LEFT_J:
	284	mode1 = 0x0001;
	285	break;
	286	default:
	287	return -EINVAL;
	288	}
	289
	290	/* use 32 fs for BCLK to save power */
	291	mode1 \|= 0x4;
	292
3b184503	293	snd_soc_write(codec, AK4535_MODE1, mode1);
796d2ca8 RP	294	return 0;
	295	}
	296
e550e17f	297	static int ak4535_mute(struct snd_soc_dai *dai, int mute)
796d2ca8 RP	298	{
796d2ca8 RP	299	struct snd_soc_codec *codec = dai->codec;
3b184503	300	u16 mute_reg = snd_soc_read(codec, AK4535_DAC);
796d2ca8	301	if (!mute)
3b184503	302	snd_soc_write(codec, AK4535_DAC, mute_reg & ~0x20);
796d2ca8	303	else
3b184503	304	snd_soc_write(codec, AK4535_DAC, mute_reg \| 0x20);
796d2ca8 RP	305	return 0;
	306	}
	307
	308	static int ak4535_set_bias_level(struct snd_soc_codec *codec,
	309	enum snd_soc_bias_level level)
	310	{
796d2ca8 RP	311	switch (level) {
796d2ca8 RP	312	case SND_SOC_BIAS_ON:
3b184503	313	snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0);
796d2ca8 RP	314	break;
796d2ca8 RP	315	case SND_SOC_BIAS_PREPARE:
3b184503	316	snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0x20);
796d2ca8 RP	317	break;
796d2ca8 RP	318	case SND_SOC_BIAS_STANDBY:
3b184503 AL	319	snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0x80);
3b184503 AL	320	snd_soc_update_bits(codec, AK4535_PM2, 0x80, 0);
796d2ca8 RP	321	break;
796d2ca8 RP	322	case SND_SOC_BIAS_OFF:
3b184503	323	snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0);
796d2ca8 RP	324	break;
796d2ca8 RP	325	}
ce6120cc	326	codec->dapm.bias_level = level;
796d2ca8 RP	327	return 0;
	328	}
	329
	330	#define AK4535_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \|\
	331	SNDRV_PCM_RATE_16000 \| SNDRV_PCM_RATE_22050 \|\
	332	SNDRV_PCM_RATE_44100 \| SNDRV_PCM_RATE_48000)
	333
6335d055 EM	334	static struct snd_soc_dai_ops ak4535_dai_ops = {
	335	.hw_params = ak4535_hw_params,
	336	.set_fmt = ak4535_set_dai_fmt,
	337	.digital_mute = ak4535_mute,
	338	.set_sysclk = ak4535_set_dai_sysclk,
	339	};
	340
f0fba2ad LG	341	static struct snd_soc_dai_driver ak4535_dai = {
f0fba2ad LG	342	.name = "ak4535-hifi",
796d2ca8 RP	343	.playback = {
	344	.stream_name = "Playback",
	345	.channels_min = 1,
	346	.channels_max = 2,
	347	.rates = AK4535_RATES,
	348	.formats = SNDRV_PCM_FMTBIT_S16_LE,},
	349	.capture = {
	350	.stream_name = "Capture",
	351	.channels_min = 1,
	352	.channels_max = 2,
	353	.rates = AK4535_RATES,
	354	.formats = SNDRV_PCM_FMTBIT_S16_LE,},
6335d055	355	.ops = &ak4535_dai_ops,
796d2ca8	356	};
796d2ca8	357
f0fba2ad	358	static int ak4535_suspend(struct snd_soc_codec *codec, pm_message_t state)
796d2ca8	359	{
796d2ca8 RP	360	ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
	361	return 0;
	362	}
	363
f0fba2ad	364	static int ak4535_resume(struct snd_soc_codec *codec)
796d2ca8	365	{
3b184503	366	snd_soc_cache_sync(codec);
796d2ca8	367	ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
796d2ca8 RP	368	return 0;
	369	}
	370
f0fba2ad	371	static int ak4535_probe(struct snd_soc_codec *codec)
796d2ca8	372	{
f0fba2ad	373	struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
3b184503	374	int ret;
796d2ca8	375
f0fba2ad	376	printk(KERN_INFO "AK4535 Audio Codec %s", AK4535_VERSION);
796d2ca8	377
3b184503 AL	378	ret = snd_soc_codec_set_cache_io(codec, 8, 8, ak4535->control_type);
	379	if (ret < 0) {
	380	dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
	381	return ret;
	382	}
796d2ca8 RP	383	/* power on device */
	384	ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	385
3e8e1952 IM	386	snd_soc_add_controls(codec, ak4535_snd_controls,
3e8e1952 IM	387	ARRAY_SIZE(ak4535_snd_controls));
f0fba2ad LG	388	return 0;
f0fba2ad LG	389	}
796d2ca8	390
f0fba2ad LG	391	/* power down chip */
	392	static int ak4535_remove(struct snd_soc_codec *codec)
	393	{
	394	ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
	395	return 0;
796d2ca8 RP	396	}
796d2ca8 RP	397
f0fba2ad LG	398	static struct snd_soc_codec_driver soc_codec_dev_ak4535 = {
	399	.probe = ak4535_probe,
	400	.remove = ak4535_remove,
	401	.suspend = ak4535_suspend,
	402	.resume = ak4535_resume,
f0fba2ad LG	403	.set_bias_level = ak4535_set_bias_level,
	404	.reg_cache_size = ARRAY_SIZE(ak4535_reg),
	405	.reg_word_size = sizeof(u8),
	406	.reg_cache_default = ak4535_reg,
b63c963d LG	407	.dapm_widgets = ak4535_dapm_widgets,
	408	.num_dapm_widgets = ARRAY_SIZE(ak4535_dapm_widgets),
	409	.dapm_routes = ak4535_audio_map,
	410	.num_dapm_routes = ARRAY_SIZE(ak4535_audio_map),
f0fba2ad	411	};
796d2ca8 RP	412
796d2ca8 RP	413	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
f0fba2ad LG	414	static __devinit int ak4535_i2c_probe(struct i2c_client *i2c,
f0fba2ad LG	415	const struct i2c_device_id *id)
796d2ca8	416	{
f0fba2ad	417	struct ak4535_priv *ak4535;
796d2ca8 RP	418	int ret;
796d2ca8 RP	419
f0fba2ad LG	420	ak4535 = kzalloc(sizeof(struct ak4535_priv), GFP_KERNEL);
	421	if (ak4535 == NULL)
	422	return -ENOMEM;
796d2ca8	423
f0fba2ad	424	i2c_set_clientdata(i2c, ak4535);
f0fba2ad	425	ak4535->control_type = SND_SOC_I2C;
796d2ca8	426
f0fba2ad LG	427	ret = snd_soc_register_codec(&i2c->dev,
	428	&soc_codec_dev_ak4535, &ak4535_dai, 1);
	429	if (ret < 0)
	430	kfree(ak4535);
796d2ca8 RP	431	return ret;
	432	}
	433
f0fba2ad	434	static __devexit int ak4535_i2c_remove(struct i2c_client *client)
796d2ca8	435	{
f0fba2ad LG	436	snd_soc_unregister_codec(&client->dev);
f0fba2ad LG	437	kfree(i2c_get_clientdata(client));
796d2ca8 RP	438	return 0;
	439	}
	440
d28d2713 JD	441	static const struct i2c_device_id ak4535_i2c_id[] = {
	442	{ "ak4535", 0 },
	443	{ }
	444	};
	445	MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
796d2ca8	446
796d2ca8 RP	447	static struct i2c_driver ak4535_i2c_driver = {
796d2ca8 RP	448	.driver = {
f0fba2ad	449	.name = "ak4535-codec",
796d2ca8 RP	450	.owner = THIS_MODULE,
796d2ca8 RP	451	},
d28d2713	452	.probe = ak4535_i2c_probe,
f0fba2ad	453	.remove = __devexit_p(ak4535_i2c_remove),
d28d2713	454	.id_table = ak4535_i2c_id,
796d2ca8	455	};
796d2ca8 RP	456	#endif
796d2ca8 RP	457
f0fba2ad	458	static int __init ak4535_modinit(void)
796d2ca8	459	{
f0fba2ad	460	int ret = 0;
796d2ca8	461	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
f0fba2ad	462	ret = i2c_add_driver(&ak4535_i2c_driver);
3051e41a	463	if (ret != 0) {
f0fba2ad LG	464	printk(KERN_ERR "Failed to register AK4535 I2C driver: %d\n",
f0fba2ad LG	465	ret);
3051e41a	466	}
f0fba2ad	467	#endif
796d2ca8 RP	468	return ret;
796d2ca8 RP	469	}
f0fba2ad	470	module_init(ak4535_modinit);
796d2ca8	471
f0fba2ad	472	static void __exit ak4535_exit(void)
796d2ca8	473	{
796d2ca8 RP	474	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	475	i2c_del_driver(&ak4535_i2c_driver);
	476	#endif
64089b84 MB	477	}
	478	module_exit(ak4535_exit);
	479
796d2ca8 RP	480	MODULE_DESCRIPTION("Soc AK4535 driver");
	481	MODULE_AUTHOR("Richard Purdie");
	482	MODULE_LICENSE("GPL");