Commit 00d27010 authored by Dmitry Artamonow's avatar Dmitry Artamonow Committed by Mark Brown
Browse files

ASoC: Asahi Kasei AK4641 codec driver 



A driver for the AK4641 codec used in iPAQ hx4700 and Glofiish M800
among others.

Signed-off-by: default avatarHarald Welte <laforge@gnumonks.org>
Signed-off-by: default avatarPhilipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: default avatarDmitry Artamonow <mad_soft@inbox.ru>
Acked-by: default avatarLiam Girdwood <lrg@ti.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 53949425

include/sound/ak4641.h

0 → 100644
+26 −0
Original line number Diff line number Diff line 
/*

 * AK4641 ALSA SoC Codec driver

 *

 * Copyright 2009 Philipp Zabel

 *

 * 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.

 */



#ifndef __AK4641_H

#define __AK4641_H



/**

 * struct ak4641_platform_data - platform specific AK4641 configuration

 * @gpio_power:	GPIO to control external power to AK4641

 * @gpio_npdn:	GPIO connected to AK4641 nPDN pin

 *

 * Both GPIO parameters are optional.

 */

struct ak4641_platform_data {

	int gpio_power;

	int gpio_npdn;

};



#endif /* __AK4641_H */

sound/soc/codecs/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ config SND_SOC_ALL_CODECS 
	select SND_SOC_ADS117X

	select SND_SOC_AK4104 if SPI_MASTER

	select SND_SOC_AK4535 if I2C

	select SND_SOC_AK4641 if I2C

	select SND_SOC_AK4642 if I2C

	select SND_SOC_AK4671 if I2C

	select SND_SOC_ALC5623 if I2C
@@ -139,6 +140,9 @@ config SND_SOC_AK4104 
config SND_SOC_AK4535

	tristate



config SND_SOC_AK4641

	tristate



config SND_SOC_AK4642

	tristate

sound/soc/codecs/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ snd-soc-ad73311-objs := ad73311.o 
snd-soc-ads117x-objs := ads117x.o

snd-soc-ak4104-objs := ak4104.o

snd-soc-ak4535-objs := ak4535.o

snd-soc-ak4641-objs := ak4641.o

snd-soc-ak4642-objs := ak4642.o

snd-soc-ak4671-objs := ak4671.o

snd-soc-cq93vc-objs := cq93vc.o
@@ -97,6 +98,7 @@ obj-$(CONFIG_SND_SOC_AD73311) += snd-soc-ad73311.o 
obj-$(CONFIG_SND_SOC_ADS117X)	+= snd-soc-ads117x.o

obj-$(CONFIG_SND_SOC_AK4104)	+= snd-soc-ak4104.o

obj-$(CONFIG_SND_SOC_AK4535)	+= snd-soc-ak4535.o

obj-$(CONFIG_SND_SOC_AK4641)	+= snd-soc-ak4641.o

obj-$(CONFIG_SND_SOC_AK4642)	+= snd-soc-ak4642.o

obj-$(CONFIG_SND_SOC_AK4671)	+= snd-soc-ak4671.o

obj-$(CONFIG_SND_SOC_ALC5623)    += snd-soc-alc5623.o

sound/soc/codecs/ak4641.c

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+664 −0
Original line number Diff line number Diff line 
/*

 * 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/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 <sound/tlv.h>

#include <sound/ak4641.h>



#include "ak4641.h"



/* codec private data */

struct ak4641_priv {

	struct snd_soc_codec *codec;

	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_ADC("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;



	/* 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;

	}



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

}



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 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 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,

};



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, pm_message_t state)

{

	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 = kzalloc(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));

	if (ret < 0)

		kfree(ak4641);



	return ret;

}



static int __devexit ak4641_i2c_remove(struct i2c_client *i2c)

{

	snd_soc_unregister_codec(&i2c->dev);

	kfree(i2c_get_clientdata(i2c));

	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,

};



static int __init ak4641_modinit(void)

{

	int ret;



	ret = i2c_add_driver(&ak4641_i2c_driver);

	if (ret != 0)

		pr_err("Failed to register AK4641 I2C driver: %d\n", ret);



	return ret;

}

module_init(ak4641_modinit);



static void __exit ak4641_exit(void)

{

	i2c_del_driver(&ak4641_i2c_driver);

}

module_exit(ak4641_exit);



MODULE_DESCRIPTION("SoC AK4641 driver");

MODULE_AUTHOR("Harald Welte <laforge@gnufiish.org>");

MODULE_LICENSE("GPL");

sound/soc/codecs/ak4641.h

0 → 100644
+47 −0
Original line number Diff line number Diff line 
/*

 * ak4641.h  --  AK4641 SoC Audio driver

 *

 * Copyright 2008 Harald Welte <laforge@gnufiish.org>

 *

 * Based on ak4535.h

 *

 * 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.

 */



#ifndef _AK4641_H

#define _AK4641_H



/* AK4641 register space */



#define AK4641_PM1		0x00

#define AK4641_PM2		0x01

#define AK4641_SIG1		0x02

#define AK4641_SIG2		0x03

#define AK4641_MODE1		0x04

#define AK4641_MODE2		0x05

#define AK4641_DAC		0x06

#define AK4641_MIC		0x07

#define AK4641_TIMER		0x08

#define AK4641_ALC1		0x09

#define AK4641_ALC2		0x0a

#define AK4641_PGA		0x0b

#define AK4641_LATT		0x0c

#define AK4641_RATT		0x0d

#define AK4641_VOL		0x0e

#define AK4641_STATUS		0x0f

#define AK4641_EQLO		0x10

#define AK4641_EQMID		0x11

#define AK4641_EQHI		0x12

#define AK4641_BTIF		0x13



#define AK4641_CACHEREGNUM	0x14







#define AK4641_DAI_HIFI		0

#define AK4641_DAI_VOICE	1





#endif

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