Unverified Commit d7e1f9e8 authored by Peng Fan's avatar Peng Fan Committed by Mark Brown
Browse files

ASoC: codec: Remove ak4641 



Since commit d6df7df7 ("ARM: pxa: remove unused board files"), there
has been no in-tree user of the AK4641 codec driver. The last user
(HP iPAQ hx4700) was a non-DT PXA board file that instantiated the device
via I2C board data; that code was removed as part of the PXA board-file
purge.

The AK4641 driver was introduced ~2011 and still probes only via the I2C
device-ID table ('.id_table'), without an 'of_match_table', so there are
no upstream Devicetree users to retain. With no in-tree users left, remove
the driver.

Signed-off-by: default avatarPeng Fan <peng.fan@nxp.com>
Reviewed-by: default avatarBartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Acked-by: default avatarAndy Shevchenko <andriy.shevchenko@intel.com>
Link: https://patch.msgid.link/20260122-sound-cleanup-v1-1-0a91901609b8@nxp.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 63804fed

include/sound/ak4641.h

deleted100644 → 0
+0 −23
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * AK4641 ALSA SoC Codec driver

 *

 * Copyright 2009 Philipp Zabel

 */



#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

+0 −6
Original line number Diff line number Diff line
@@ -46,7 +46,6 @@ config SND_SOC_ALL_CODECS 
	imply SND_SOC_AK4554

	imply SND_SOC_AK4613

	imply SND_SOC_AK4619

	imply SND_SOC_AK4641

	imply SND_SOC_AK4642

	imply SND_SOC_AK4671

	imply SND_SOC_AK5386
@@ -624,11 +623,6 @@ config SND_SOC_AK4619 
        tristate "AKM AK4619 CODEC"

        depends on I2C



config SND_SOC_AK4641

	tristate

	depends on I2C

	depends on GPIOLIB_LEGACY



config SND_SOC_AK4642

	tristate "AKM AK4642 CODEC"

	depends on I2C

sound/soc/codecs/Makefile

+0 −2
Original line number Diff line number Diff line
@@ -40,7 +40,6 @@ snd-soc-ak4535-y := ak4535.o 
snd-soc-ak4554-y := ak4554.o

snd-soc-ak4613-y := ak4613.o

snd-soc-ak4619-y := ak4619.o

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

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

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

snd-soc-ak5386-y := ak5386.o
@@ -472,7 +471,6 @@ obj-$(CONFIG_SND_SOC_AK4535) += snd-soc-ak4535.o 
obj-$(CONFIG_SND_SOC_AK4554)	+= snd-soc-ak4554.o

obj-$(CONFIG_SND_SOC_AK4613)	+= snd-soc-ak4613.o

obj-$(CONFIG_SND_SOC_AK4619)	+= snd-soc-ak4619.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_AK5386)	+= snd-soc-ak5386.o

sound/soc/codecs/ak4641.c

deleted100644 → 0
+0 −641
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * 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

 */



#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/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 <sound/tlv.h>

#include <sound/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



/* codec private data */

struct ak4641_priv {

	struct regmap *regmap;

	unsigned int sysclk;

	int deemph;

	int playback_fs;

};



/*

 * ak4641 register cache

 */

static const struct reg_default ak4641_reg_defaults[] = {

	{  0, 0x00 }, {  1, 0x80 }, {  2, 0x00 }, {  3, 0x80 },

	{  4, 0x02 }, {  5, 0x00 }, {  6, 0x11 }, {  7, 0x05 },

	{  8, 0x00 }, {  9, 0x00 }, { 10, 0x36 }, { 11, 0x10 },

	{ 12, 0x00 }, { 13, 0x00 }, { 14, 0x57 }, { 15, 0x00 },

	{ 16, 0x88 }, { 17, 0x88 }, { 18, 0x08 }, { 19, 0x08 }

};



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



static int ak4641_set_deemph(struct snd_soc_component *component)

{

	struct ak4641_priv *ak4641 = snd_soc_component_get_drvdata(component);

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



	return snd_soc_component_update_bits(component, AK4641_DAC, 0x3, best);

}



static int ak4641_put_deemph(struct snd_kcontrol *kcontrol,

				struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);

	struct ak4641_priv *ak4641 = snd_soc_component_get_drvdata(component);

	int deemph = ucontrol->value.integer.value[0];



	if (deemph > 1)

		return -EINVAL;



	ak4641->deemph = deemph;



	return ak4641_set_deemph(component);

}



static int ak4641_get_deemph(struct snd_kcontrol *kcontrol,

				struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);

	struct ak4641_priv *ak4641 = snd_soc_component_get_drvdata(component);



	ucontrol->value.integer.value[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 SOC_ENUM_SINGLE_DECL(ak4641_mono_out_enum,

			    AK4641_SIG1, 6, ak4641_mono_out);

static SOC_ENUM_SINGLE_DECL(ak4641_hp_out_enum,

			    AK4641_MODE2, 2, ak4641_hp_out);

static SOC_ENUM_SINGLE_DECL(ak4641_mic_select_enum,

			    AK4641_MIC, 1, ak4641_mic_select);

static SOC_ENUM_SINGLE_DECL(ak4641_mic_or_dac_enum,

			    AK4641_BTIF, 4, 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_component *component = codec_dai->component;

	struct ak4641_priv *ak4641 = snd_soc_component_get_drvdata(component);



	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_component *component = dai->component;

	struct ak4641_priv *ak4641 = snd_soc_component_get_drvdata(component);

	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(component->dev, "Error: unsupported fs=%d\n", fs);

		return -EINVAL;

	}



	snd_soc_component_update_bits(component, 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(component);

	}



	return 0;

}



static int ak4641_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai,

				  unsigned int fmt)

{

	struct snd_soc_component *component = codec_dai->component;

	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_component_update_bits(component, 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_component *component = codec_dai->component;

	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_component_write(component, AK4641_MODE1, mode1);

}



static int ak4641_mute(struct snd_soc_dai *dai, int mute, int direction)

{

	struct snd_soc_component *component = dai->component;



	return snd_soc_component_update_bits(component, AK4641_DAC, 0x20, mute ? 0x20 : 0);

}



static int ak4641_set_bias_level(struct snd_soc_component *component,

	enum snd_soc_bias_level level)

{

	struct snd_soc_dapm_context *dapm = snd_soc_component_to_dapm(component);

	struct ak4641_priv *ak4641 = snd_soc_component_get_drvdata(component);

	struct ak4641_platform_data *pdata = component->dev->platform_data;

	int ret;



	switch (level) {

	case SND_SOC_BIAS_ON:

		/* unmute */

		snd_soc_component_update_bits(component, AK4641_DAC, 0x20, 0);

		break;

	case SND_SOC_BIAS_PREPARE:

		/* mute */

		snd_soc_component_update_bits(component, AK4641_DAC, 0x20, 0x20);

		break;

	case SND_SOC_BIAS_STANDBY:

		if (snd_soc_dapm_get_bias_level(dapm) == 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 = regcache_sync(ak4641->regmap);

			if (ret) {

				dev_err(component->dev,

					"Failed to sync cache: %d\n", ret);

				return ret;

			}

		}

		snd_soc_component_update_bits(component, AK4641_PM1, 0x80, 0x80);

		snd_soc_component_update_bits(component, AK4641_PM2, 0x80, 0);

		break;

	case SND_SOC_BIAS_OFF:

		snd_soc_component_update_bits(component, 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);

		regcache_mark_dirty(ak4641->regmap);

		break;

	}

	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,

	.mute_stream  = ak4641_mute,

	.set_sysclk   = ak4641_set_dai_sysclk,

	.no_capture_mute = 1,

};



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,

	.mute_stream  = ak4641_mute,

	.set_sysclk   = ak4641_set_dai_sysclk,

	.no_capture_mute = 1,

};



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_rate = 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_rate = 1,

},

};



static const struct snd_soc_component_driver soc_component_dev_ak4641 = {

	.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,

	.suspend_bias_off	= 1,

	.idle_bias_on		= 1,

	.use_pmdown_time	= 1,

	.endianness		= 1,

};



static const struct regmap_config ak4641_regmap = {

	.reg_bits = 8,

	.val_bits = 8,



	.max_register = AK4641_BTIF,

	.reg_defaults = ak4641_reg_defaults,

	.num_reg_defaults = ARRAY_SIZE(ak4641_reg_defaults),

	.cache_type = REGCACHE_RBTREE,

};



static int ak4641_i2c_probe(struct i2c_client *i2c)

{

	struct ak4641_platform_data *pdata = i2c->dev.platform_data;

	struct ak4641_priv *ak4641;

	int ret;



	ak4641 = devm_kzalloc(&i2c->dev, sizeof(struct ak4641_priv),

			      GFP_KERNEL);

	if (!ak4641)

		return -ENOMEM;



	ak4641->regmap = devm_regmap_init_i2c(i2c, &ak4641_regmap);

	if (IS_ERR(ak4641->regmap))

		return PTR_ERR(ak4641->regmap);



	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);

		}

	}



	i2c_set_clientdata(i2c, ak4641);



	ret = devm_snd_soc_register_component(&i2c->dev,

				&soc_component_dev_ak4641,

				ak4641_dai, ARRAY_SIZE(ak4641_dai));

	if (ret != 0)

		goto err_gpio2;



	return 0;



err_gpio2:

	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 void ak4641_i2c_remove(struct i2c_client *i2c)

{

	struct ak4641_platform_data *pdata = i2c->dev.platform_data;



	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);

	}

}



static const struct i2c_device_id ak4641_i2c_id[] = {

	{ "ak4641" },

	{ }

};

MODULE_DEVICE_TABLE(i2c, ak4641_i2c_id);



static struct i2c_driver ak4641_i2c_driver = {

	.driver = {

		.name = "ak4641",

	},

	.probe =    ak4641_i2c_probe,

	.remove =   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");