sound/soc/samsung/neo1973_wm8753.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0+
 //
 // neo1973_wm8753.c - SoC audio for Openmoko Neo1973 and Freerunner devices
 //
 // Copyright 2007 Openmoko Inc
 // Author: Graeme Gregory <graeme@openmoko.org>
 // Copyright 2007 Wolfson Microelectronics PLC.
 // Author: Graeme Gregory
 //         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
 // Copyright 2009 Wolfson Microelectronics

 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/gpio/consumer.h>

 #include <sound/soc.h>

 #include "regs-iis.h"
 #include "../codecs/wm8753.h"
 #include "s3c24xx-i2s.h"

 static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
 	struct snd_pcm_hw_params *params)
 {
 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 	unsigned int pll_out = 0, bclk = 0;
 	int ret = 0;
 	unsigned long iis_clkrate;

 	iis_clkrate = s3c24xx_i2s_get_clockrate();

 	switch (params_rate(params)) {
 	case 8000:
 	case 16000:
 		pll_out = 12288000;
 		break;
 	case 48000:
 		bclk = WM8753_BCLK_DIV_4;
 		pll_out = 12288000;
 		break;
 	case 96000:
 		bclk = WM8753_BCLK_DIV_2;
 		pll_out = 12288000;
 		break;
 	case 11025:
 		bclk = WM8753_BCLK_DIV_16;
 		pll_out = 11289600;
 		break;
 	case 22050:
 		bclk = WM8753_BCLK_DIV_8;
 		pll_out = 11289600;
 		break;
 	case 44100:
 		bclk = WM8753_BCLK_DIV_4;
 		pll_out = 11289600;
 		break;
 	case 88200:
 		bclk = WM8753_BCLK_DIV_2;
 		pll_out = 11289600;
 		break;
 	}

 	/* set the codec system clock for DAC and ADC */
 	ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
 		SND_SOC_CLOCK_IN);
 	if (ret < 0)
 		return ret;

 	/* set MCLK division for sample rate */
 	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 		S3C2410_IISMOD_32FS);
 	if (ret < 0)
 		return ret;

 	/* set codec BCLK division for sample rate */
 	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
 	if (ret < 0)
 		return ret;

 	/* set prescaler division for sample rate */
 	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 		S3C24XX_PRESCALE(4, 4));
 	if (ret < 0)
 		return ret;

 	/* codec PLL input is PCLK/4 */
 	ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
 		iis_clkrate / 4, pll_out);
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);

 	/* disable the PLL */
 	return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
 }

 /*
  * Neo1973 WM8753 HiFi DAI opserations.
  */
 static struct snd_soc_ops neo1973_hifi_ops = {
 	.hw_params = neo1973_hifi_hw_params,
 	.hw_free = neo1973_hifi_hw_free,
 };

 static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
 	struct snd_pcm_hw_params *params)
 {
 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 	unsigned int pcmdiv = 0;
 	int ret = 0;
 	unsigned long iis_clkrate;

 	iis_clkrate = s3c24xx_i2s_get_clockrate();

 	if (params_rate(params) != 8000)
 		return -EINVAL;
 	if (params_channels(params) != 1)
 		return -EINVAL;

 	pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */

 	/* set the codec system clock for DAC and ADC */
 	ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
 		SND_SOC_CLOCK_IN);
 	if (ret < 0)
 		return ret;

 	/* set codec PCM division for sample rate */
 	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
 	if (ret < 0)
 		return ret;

 	/* configure and enable PLL for 12.288MHz output */
 	ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
 		iis_clkrate / 4, 12288000);
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);

 	/* disable the PLL */
 	return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
 }

 static struct snd_soc_ops neo1973_voice_ops = {
 	.hw_params = neo1973_voice_hw_params,
 	.hw_free = neo1973_voice_hw_free,
 };

 static struct gpio_desc *gpiod_hp_in, *gpiod_amp_shut;
 static int gta02_speaker_enabled;

 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
 {
 	gta02_speaker_enabled = ucontrol->value.integer.value[0];

 	gpiod_set_value(gpiod_hp_in, !gta02_speaker_enabled);

 	return 0;
 }

 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
 {
 	ucontrol->value.integer.value[0] = gta02_speaker_enabled;
 	return 0;
 }

 static int lm4853_event(struct snd_soc_dapm_widget *w,
 			struct snd_kcontrol *k, int event)
 {
 	gpiod_set_value(gpiod_amp_shut, SND_SOC_DAPM_EVENT_OFF(event));

 	return 0;
 }

 static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
 	SND_SOC_DAPM_LINE("GSM Line Out", NULL),
 	SND_SOC_DAPM_LINE("GSM Line In", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 	SND_SOC_DAPM_MIC("Handset Mic", NULL),
 	SND_SOC_DAPM_SPK("Handset Spk", NULL),
 	SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
 };

 static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
 	/* Connections to the GSM Module */
 	{"GSM Line Out", NULL, "MONO1"},
 	{"GSM Line Out", NULL, "MONO2"},
 	{"RXP", NULL, "GSM Line In"},
 	{"RXN", NULL, "GSM Line In"},

 	/* Connections to Headset */
 	{"MIC1", NULL, "Mic Bias"},
 	{"Mic Bias", NULL, "Headset Mic"},

 	/* Call Mic */
 	{"MIC2", NULL, "Mic Bias"},
 	{"MIC2N", NULL, "Mic Bias"},
 	{"Mic Bias", NULL, "Handset Mic"},

 	/* Connect the ALC pins */
 	{"ACIN", NULL, "ACOP"},

 	/* Connections to the amp */
 	{"Stereo Out", NULL, "LOUT1"},
 	{"Stereo Out", NULL, "ROUT1"},

 	/* Call Speaker */
 	{"Handset Spk", NULL, "LOUT2"},
 	{"Handset Spk", NULL, "ROUT2"},
 };

 static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
 	SOC_DAPM_PIN_SWITCH("GSM Line Out"),
 	SOC_DAPM_PIN_SWITCH("GSM Line In"),
 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
 	SOC_DAPM_PIN_SWITCH("Handset Mic"),
 	SOC_DAPM_PIN_SWITCH("Handset Spk"),
 	SOC_DAPM_PIN_SWITCH("Stereo Out"),

 	SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
 		lm4853_get_spk,
 		lm4853_set_spk),
 };

 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_card *card = rtd->card;

 	/* set endpoints to default off mode */
 	snd_soc_dapm_disable_pin(&card->dapm, "GSM Line Out");
 	snd_soc_dapm_disable_pin(&card->dapm, "GSM Line In");
 	snd_soc_dapm_disable_pin(&card->dapm, "Headset Mic");
 	snd_soc_dapm_disable_pin(&card->dapm, "Handset Mic");
 	snd_soc_dapm_disable_pin(&card->dapm, "Stereo Out");
 	snd_soc_dapm_disable_pin(&card->dapm, "Handset Spk");

 	/* allow audio paths from the GSM modem to run during suspend */
 	snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line Out");
 	snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line In");
 	snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
 	snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Mic");
 	snd_soc_dapm_ignore_suspend(&card->dapm, "Stereo Out");
 	snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Spk");

 	return 0;
 }

 SND_SOC_DAILINK_DEFS(wm8753,
 	DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")),
 	DAILINK_COMP_ARRAY(COMP_CODEC("wm8753.0-001a", "wm8753-hifi")),
 	DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis")));

 SND_SOC_DAILINK_DEFS(bluetooth,
 	DAILINK_COMP_ARRAY(COMP_CPU("bt-sco-pcm")),
 	DAILINK_COMP_ARRAY(COMP_CODEC("wm8753.0-001a", "wm8753-voice")));

 static struct snd_soc_dai_link neo1973_dai[] = {
 { /* Hifi Playback - for similatious use with voice below */
 	.name = "WM8753",
 	.stream_name = "WM8753 HiFi",
 	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 		   SND_SOC_DAIFMT_CBM_CFM,
 	.init = neo1973_wm8753_init,
 	.ops = &neo1973_hifi_ops,
 	SND_SOC_DAILINK_REG(wm8753),
 },
 { /* Voice via BT */
 	.name = "Bluetooth",
 	.stream_name = "Voice",
 	.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
 		   SND_SOC_DAIFMT_CBS_CFS,
 	.ops = &neo1973_voice_ops,
 	SND_SOC_DAILINK_REG(bluetooth),
 },
 };

 static struct snd_soc_aux_dev neo1973_aux_devs[] = {
 	{
 		.dlc = COMP_AUX("dfbmcs320.0"),
 	},
 };

 static struct snd_soc_codec_conf neo1973_codec_conf[] = {
 	{
 		.dlc = COMP_CODEC_CONF("lm4857.0-007c"),
 		.name_prefix = "Amp",
 	},
 };

 static struct snd_soc_card neo1973 = {
 	.name = "neo1973gta02",
 	.owner = THIS_MODULE,
 	.dai_link = neo1973_dai,
 	.num_links = ARRAY_SIZE(neo1973_dai),
 	.aux_dev = neo1973_aux_devs,
 	.num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
 	.codec_conf = neo1973_codec_conf,
 	.num_configs = ARRAY_SIZE(neo1973_codec_conf),

 	.controls = neo1973_wm8753_controls,
 	.num_controls = ARRAY_SIZE(neo1973_wm8753_controls),
 	.dapm_widgets = neo1973_wm8753_dapm_widgets,
 	.num_dapm_widgets = ARRAY_SIZE(neo1973_wm8753_dapm_widgets),
 	.dapm_routes = neo1973_wm8753_routes,
 	.num_dapm_routes = ARRAY_SIZE(neo1973_wm8753_routes),
 	.fully_routed = true,
 };

 static int neo1973_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;

 	gpiod_hp_in = devm_gpiod_get(dev, "hp", GPIOD_OUT_HIGH);
 	if (IS_ERR(gpiod_hp_in)) {
 		dev_err(dev, "missing gpio %s\n", "hp");
 		return PTR_ERR(gpiod_hp_in);
 	}
 	gpiod_amp_shut = devm_gpiod_get(dev, "amp-shut", GPIOD_OUT_HIGH);
 	if (IS_ERR(gpiod_amp_shut)) {
 		dev_err(dev, "missing gpio %s\n", "amp-shut");
 		return PTR_ERR(gpiod_amp_shut);
 	}

 	neo1973.dev = dev;
 	return devm_snd_soc_register_card(dev, &neo1973);
 }

 struct platform_driver neo1973_audio = {
 	.driver = {
 		.name = "neo1973-audio",
 		.pm = &snd_soc_pm_ops,
 	},
 	.probe = neo1973_probe,
 };
 module_platform_driver(neo1973_audio);

 /* Module information */
 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:neo1973-audio");
	// SPDX-License-Identifier: GPL-2.0+
	//
	// neo1973_wm8753.c - SoC audio for Openmoko Neo1973 and Freerunner devices
	//
	// Copyright 2007 Openmoko Inc
	// Author: Graeme Gregory <graeme@openmoko.org>
	// Copyright 2007 Wolfson Microelectronics PLC.
	// Author: Graeme Gregory
	// graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
	// Copyright 2009 Wolfson Microelectronics

	#include <linux/module.h>
	#include <linux/platform_device.h>
	#include <linux/gpio/consumer.h>

	#include <sound/soc.h>

	#include "regs-iis.h"
	#include "../codecs/wm8753.h"
	#include "s3c24xx-i2s.h"

	static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
	{
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	unsigned int pll_out = 0, bclk = 0;
	int ret = 0;
	unsigned long iis_clkrate;

	iis_clkrate = s3c24xx_i2s_get_clockrate();

	switch (params_rate(params)) {
	case 8000:
	case 16000:
	pll_out = 12288000;
	break;
	case 48000:
	bclk = WM8753_BCLK_DIV_4;
	pll_out = 12288000;
	break;
	case 96000:
	bclk = WM8753_BCLK_DIV_2;
	pll_out = 12288000;
	break;
	case 11025:
	bclk = WM8753_BCLK_DIV_16;
	pll_out = 11289600;
	break;
	case 22050:
	bclk = WM8753_BCLK_DIV_8;
	pll_out = 11289600;
	break;
	case 44100:
	bclk = WM8753_BCLK_DIV_4;
	pll_out = 11289600;
	break;
	case 88200:
	bclk = WM8753_BCLK_DIV_2;
	pll_out = 11289600;
	break;
	}

	/* set the codec system clock for DAC and ADC */
	ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
	SND_SOC_CLOCK_IN);
	if (ret < 0)
	return ret;

	/* set MCLK division for sample rate */
	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
	S3C2410_IISMOD_32FS);
	if (ret < 0)
	return ret;

	/* set codec BCLK division for sample rate */
	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
	if (ret < 0)
	return ret;

	/* set prescaler division for sample rate */
	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
	S3C24XX_PRESCALE(4, 4));
	if (ret < 0)
	return ret;

	/* codec PLL input is PCLK/4 */
	ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
	iis_clkrate / 4, pll_out);
	if (ret < 0)
	return ret;

	return 0;
	}

	static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);

	/* disable the PLL */
	return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
	}

	/*
	* Neo1973 WM8753 HiFi DAI opserations.
	*/
	static struct snd_soc_ops neo1973_hifi_ops = {
	.hw_params = neo1973_hifi_hw_params,
	.hw_free = neo1973_hifi_hw_free,
	};

	static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
	{
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
	unsigned int pcmdiv = 0;
	int ret = 0;
	unsigned long iis_clkrate;

	iis_clkrate = s3c24xx_i2s_get_clockrate();

	if (params_rate(params) != 8000)
	return -EINVAL;
	if (params_channels(params) != 1)
	return -EINVAL;

	pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */

	/* set the codec system clock for DAC and ADC */
	ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
	SND_SOC_CLOCK_IN);
	if (ret < 0)
	return ret;

	/* set codec PCM division for sample rate */
	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
	if (ret < 0)
	return ret;

	/* configure and enable PLL for 12.288MHz output */
	ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
	iis_clkrate / 4, 12288000);
	if (ret < 0)
	return ret;

	return 0;
	}

	static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);

	/* disable the PLL */
	return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
	}

	static struct snd_soc_ops neo1973_voice_ops = {
	.hw_params = neo1973_voice_hw_params,
	.hw_free = neo1973_voice_hw_free,
	};

	static struct gpio_desc gpiod_hp_in, gpiod_amp_shut;
	static int gta02_speaker_enabled;

	static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	gta02_speaker_enabled = ucontrol->value.integer.value[0];

	gpiod_set_value(gpiod_hp_in, !gta02_speaker_enabled);

	return 0;
	}

	static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	ucontrol->value.integer.value[0] = gta02_speaker_enabled;
	return 0;
	}

	static int lm4853_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
	{
	gpiod_set_value(gpiod_amp_shut, SND_SOC_DAPM_EVENT_OFF(event));

	return 0;
	}

	static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
	SND_SOC_DAPM_LINE("GSM Line Out", NULL),
	SND_SOC_DAPM_LINE("GSM Line In", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_MIC("Handset Mic", NULL),
	SND_SOC_DAPM_SPK("Handset Spk", NULL),
	SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
	};

	static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
	/* Connections to the GSM Module */
	{"GSM Line Out", NULL, "MONO1"},
	{"GSM Line Out", NULL, "MONO2"},
	{"RXP", NULL, "GSM Line In"},
	{"RXN", NULL, "GSM Line In"},

	/* Connections to Headset */
	{"MIC1", NULL, "Mic Bias"},
	{"Mic Bias", NULL, "Headset Mic"},

	/* Call Mic */
	{"MIC2", NULL, "Mic Bias"},
	{"MIC2N", NULL, "Mic Bias"},
	{"Mic Bias", NULL, "Handset Mic"},

	/* Connect the ALC pins */
	{"ACIN", NULL, "ACOP"},

	/* Connections to the amp */
	{"Stereo Out", NULL, "LOUT1"},
	{"Stereo Out", NULL, "ROUT1"},

	/* Call Speaker */
	{"Handset Spk", NULL, "LOUT2"},
	{"Handset Spk", NULL, "ROUT2"},
	};

	static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
	SOC_DAPM_PIN_SWITCH("GSM Line Out"),
	SOC_DAPM_PIN_SWITCH("GSM Line In"),
	SOC_DAPM_PIN_SWITCH("Headset Mic"),
	SOC_DAPM_PIN_SWITCH("Handset Mic"),
	SOC_DAPM_PIN_SWITCH("Handset Spk"),
	SOC_DAPM_PIN_SWITCH("Stereo Out"),

	SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
	lm4853_get_spk,
	lm4853_set_spk),
	};

	static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_card *card = rtd->card;

	/* set endpoints to default off mode */
	snd_soc_dapm_disable_pin(&card->dapm, "GSM Line Out");
	snd_soc_dapm_disable_pin(&card->dapm, "GSM Line In");
	snd_soc_dapm_disable_pin(&card->dapm, "Headset Mic");
	snd_soc_dapm_disable_pin(&card->dapm, "Handset Mic");
	snd_soc_dapm_disable_pin(&card->dapm, "Stereo Out");
	snd_soc_dapm_disable_pin(&card->dapm, "Handset Spk");

	/* allow audio paths from the GSM modem to run during suspend */
	snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line Out");
	snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line In");
	snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
	snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Mic");
	snd_soc_dapm_ignore_suspend(&card->dapm, "Stereo Out");
	snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Spk");

	return 0;
	}

	SND_SOC_DAILINK_DEFS(wm8753,
	DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")),
	DAILINK_COMP_ARRAY(COMP_CODEC("wm8753.0-001a", "wm8753-hifi")),
	DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis")));

	SND_SOC_DAILINK_DEFS(bluetooth,
	DAILINK_COMP_ARRAY(COMP_CPU("bt-sco-pcm")),
	DAILINK_COMP_ARRAY(COMP_CODEC("wm8753.0-001a", "wm8753-voice")));

	static struct snd_soc_dai_link neo1973_dai[] = {
	{ /* Hifi Playback - for similatious use with voice below */
	.name = "WM8753",
	.stream_name = "WM8753 HiFi",
	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_CBM_CFM,
	.init = neo1973_wm8753_init,
	.ops = &neo1973_hifi_ops,
	SND_SOC_DAILINK_REG(wm8753),
	},
	{ /* Voice via BT */
	.name = "Bluetooth",
	.stream_name = "Voice",
	.dai_fmt = SND_SOC_DAIFMT_DSP_B \| SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_CBS_CFS,
	.ops = &neo1973_voice_ops,
	SND_SOC_DAILINK_REG(bluetooth),
	},
	};

	static struct snd_soc_aux_dev neo1973_aux_devs[] = {
	{
	.dlc = COMP_AUX("dfbmcs320.0"),
	},
	};

	static struct snd_soc_codec_conf neo1973_codec_conf[] = {
	{
	.dlc = COMP_CODEC_CONF("lm4857.0-007c"),
	.name_prefix = "Amp",
	},
	};

	static struct snd_soc_card neo1973 = {
	.name = "neo1973gta02",
	.owner = THIS_MODULE,
	.dai_link = neo1973_dai,
	.num_links = ARRAY_SIZE(neo1973_dai),
	.aux_dev = neo1973_aux_devs,
	.num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
	.codec_conf = neo1973_codec_conf,
	.num_configs = ARRAY_SIZE(neo1973_codec_conf),

	.controls = neo1973_wm8753_controls,
	.num_controls = ARRAY_SIZE(neo1973_wm8753_controls),
	.dapm_widgets = neo1973_wm8753_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(neo1973_wm8753_dapm_widgets),
	.dapm_routes = neo1973_wm8753_routes,
	.num_dapm_routes = ARRAY_SIZE(neo1973_wm8753_routes),
	.fully_routed = true,
	};

	static int neo1973_probe(struct platform_device *pdev)
	{
	struct device *dev = &pdev->dev;

	gpiod_hp_in = devm_gpiod_get(dev, "hp", GPIOD_OUT_HIGH);
	if (IS_ERR(gpiod_hp_in)) {
	dev_err(dev, "missing gpio %s\n", "hp");
	return PTR_ERR(gpiod_hp_in);
	}
	gpiod_amp_shut = devm_gpiod_get(dev, "amp-shut", GPIOD_OUT_HIGH);
	if (IS_ERR(gpiod_amp_shut)) {
	dev_err(dev, "missing gpio %s\n", "amp-shut");
	return PTR_ERR(gpiod_amp_shut);
	}

	neo1973.dev = dev;
	return devm_snd_soc_register_card(dev, &neo1973);
	}

	struct platform_driver neo1973_audio = {
	.driver = {
	.name = "neo1973-audio",
	.pm = &snd_soc_pm_ops,
	},
	.probe = neo1973_probe,
	};
	module_platform_driver(neo1973_audio);

	/* Module information */
	MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
	MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
	MODULE_LICENSE("GPL");
	MODULE_ALIAS("platform:neo1973-audio");