text: /*
   * Driver for ADAU1381/ADAU1781 codec
   *
   * Copyright 2011-2013 Analog Devices Inc.
   * Author: Lars-Peter Clausen <lars@metafoo.de>
   *
   * Licensed under the GPL-2 or later.
   */
  
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/i2c.h>
  #include <linux/spi/spi.h>
  #include <linux/slab.h>
  #include <sound/core.h>
  #include <sound/pcm.h>
  #include <sound/pcm_params.h>
  #include <sound/soc.h>
  #include <sound/tlv.h>
  #include <linux/platform_data/adau17x1.h>
  
  #include "adau17x1.h"
  #include "adau1781.h"
  
  #define ADAU1781_DMIC_BEEP_CTRL		0x4008
  #define ADAU1781_LEFT_PGA		0x400e
  #define ADAU1781_RIGHT_PGA		0x400f
  #define ADAU1781_LEFT_PLAYBACK_MIXER	0x401c
  #define ADAU1781_RIGHT_PLAYBACK_MIXER	0x401e
  #define ADAU1781_MONO_PLAYBACK_MIXER	0x401f
  #define ADAU1781_LEFT_LINEOUT		0x4025
  #define ADAU1781_RIGHT_LINEOUT		0x4026
  #define ADAU1781_SPEAKER		0x4027
  #define ADAU1781_BEEP_ZC		0x4028
  #define ADAU1781_DEJITTER		0x4032
  #define ADAU1781_DIG_PWDN0		0x4080
  #define ADAU1781_DIG_PWDN1		0x4081
  
  #define ADAU1781_INPUT_DIFFERNTIAL BIT(3)
  
  #define ADAU1381_FIRMWARE "adau1381.bin"
  #define ADAU1781_FIRMWARE "adau1781.bin"
  
  static const struct reg_default adau1781_reg_defaults[] = {
  	{ ADAU1781_DMIC_BEEP_CTRL,		0x00 },
  	{ ADAU1781_LEFT_PGA,			0xc7 },
  	{ ADAU1781_RIGHT_PGA,			0xc7 },
  	{ ADAU1781_LEFT_PLAYBACK_MIXER,		0x00 },
  	{ ADAU1781_RIGHT_PLAYBACK_MIXER,	0x00 },
  	{ ADAU1781_MONO_PLAYBACK_MIXER,		0x00 },
  	{ ADAU1781_LEFT_LINEOUT,		0x00 },
  	{ ADAU1781_RIGHT_LINEOUT,		0x00 },
  	{ ADAU1781_SPEAKER,			0x00 },
  	{ ADAU1781_BEEP_ZC,			0x19 },
  	{ ADAU1781_DEJITTER,			0x60 },
  	{ ADAU1781_DIG_PWDN1,			0x0c },
  	{ ADAU1781_DIG_PWDN1,			0x00 },
  	{ ADAU17X1_CLOCK_CONTROL,		0x00 },
  	{ ADAU17X1_PLL_CONTROL,			0x00 },
  	{ ADAU17X1_REC_POWER_MGMT,		0x00 },
  	{ ADAU17X1_MICBIAS,			0x04 },
  	{ ADAU17X1_SERIAL_PORT0,		0x00 },
  	{ ADAU17X1_SERIAL_PORT1,		0x00 },
  	{ ADAU17X1_CONVERTER0,			0x00 },
  	{ ADAU17X1_CONVERTER1,			0x00 },
  	{ ADAU17X1_LEFT_INPUT_DIGITAL_VOL,	0x00 },
  	{ ADAU17X1_RIGHT_INPUT_DIGITAL_VOL,	0x00 },
  	{ ADAU17X1_ADC_CONTROL,			0x00 },
  	{ ADAU17X1_PLAY_POWER_MGMT,		0x00 },
  	{ ADAU17X1_DAC_CONTROL0,		0x00 },
  	{ ADAU17X1_DAC_CONTROL1,		0x00 },
  	{ ADAU17X1_DAC_CONTROL2,		0x00 },
  	{ ADAU17X1_SERIAL_PORT_PAD,		0x00 },
  	{ ADAU17X1_CONTROL_PORT_PAD0,		0x00 },
  	{ ADAU17X1_CONTROL_PORT_PAD1,		0x00 },
  	{ ADAU17X1_DSP_SAMPLING_RATE,		0x01 },
  	{ ADAU17X1_SERIAL_INPUT_ROUTE,		0x00 },
  	{ ADAU17X1_SERIAL_OUTPUT_ROUTE,		0x00 },
  	{ ADAU17X1_DSP_ENABLE,			0x00 },
  	{ ADAU17X1_DSP_RUN,			0x00 },
  	{ ADAU17X1_SERIAL_SAMPLING_RATE,	0x00 },
  };
  
  static const DECLARE_TLV_DB_SCALE(adau1781_speaker_tlv, 0, 200, 0);
  
  static const DECLARE_TLV_DB_RANGE(adau1781_pga_tlv,
  	0, 1, TLV_DB_SCALE_ITEM(0, 600, 0),
  	2, 3, TLV_DB_SCALE_ITEM(1000, 400, 0),
  	4, 4, TLV_DB_SCALE_ITEM(1700, 0, 0),
  	5, 7, TLV_DB_SCALE_ITEM(2000, 600, 0)
  );
  
  static const DECLARE_TLV_DB_RANGE(adau1781_beep_tlv,
  	0, 1, TLV_DB_SCALE_ITEM(0, 600, 0),
  	2, 3, TLV_DB_SCALE_ITEM(1000, 400, 0),
  	4, 4, TLV_DB_SCALE_ITEM(-2300, 0, 0),
  	5, 7, TLV_DB_SCALE_ITEM(2000, 600, 0)
  );
  
  static const DECLARE_TLV_DB_SCALE(adau1781_sidetone_tlv, -1800, 300, 1);
  
  static const char * const adau1781_speaker_bias_select_text[] = {
  	"Normal operation", "Power saving", "Enhanced performance",
  };
  
  static const char * const adau1781_bias_select_text[] = {
  	"Normal operation", "Extreme power saving", "Power saving",
  	"Enhanced performance",
  };
  
  static SOC_ENUM_SINGLE_DECL(adau1781_adc_bias_enum,
  		ADAU17X1_REC_POWER_MGMT, 3, adau1781_bias_select_text);
  static SOC_ENUM_SINGLE_DECL(adau1781_speaker_bias_enum,
  		ADAU17X1_PLAY_POWER_MGMT, 6, adau1781_speaker_bias_select_text);
  static SOC_ENUM_SINGLE_DECL(adau1781_dac_bias_enum,
  		ADAU17X1_PLAY_POWER_MGMT, 4, adau1781_bias_select_text);
  static SOC_ENUM_SINGLE_DECL(adau1781_playback_bias_enum,
  		ADAU17X1_PLAY_POWER_MGMT, 2, adau1781_bias_select_text);
  static SOC_ENUM_SINGLE_DECL(adau1781_capture_bias_enum,
  		ADAU17X1_REC_POWER_MGMT, 1, adau1781_bias_select_text);
  
  static const struct snd_kcontrol_new adau1781_controls[] = {
  	SOC_SINGLE_TLV("Beep Capture Volume", ADAU1781_DMIC_BEEP_CTRL, 0, 7, 0,
  		adau1781_beep_tlv),
  	SOC_DOUBLE_R_TLV("PGA Capture Volume", ADAU1781_LEFT_PGA,
  		ADAU1781_RIGHT_PGA, 5, 7, 0, adau1781_pga_tlv),
  	SOC_DOUBLE_R("PGA Capture Switch", ADAU1781_LEFT_PGA,
  		ADAU1781_RIGHT_PGA, 1, 1, 0),
  
  	SOC_DOUBLE_R("Lineout Playback Switch", ADAU1781_LEFT_LINEOUT,
  		ADAU1781_RIGHT_LINEOUT, 1, 1, 0),
  	SOC_SINGLE("Beep ZC Switch", ADAU1781_BEEP_ZC, 0, 1, 0),
  
  	SOC_SINGLE("Mono Playback Switch", ADAU1781_MONO_PLAYBACK_MIXER,
  		0, 1, 0),
  	SOC_SINGLE_TLV("Mono Playback Volume", ADAU1781_SPEAKER, 6, 3, 0,
  		adau1781_speaker_tlv),
  
  	SOC_ENUM("ADC Bias", adau1781_adc_bias_enum),
  	SOC_ENUM("DAC Bias", adau1781_dac_bias_enum),
  	SOC_ENUM("Capture Bias", adau1781_capture_bias_enum),
  	SOC_ENUM("Playback Bias", adau1781_playback_bias_enum),
  	SOC_ENUM("Speaker Bias", adau1781_speaker_bias_enum),
  };
  
  static const struct snd_kcontrol_new adau1781_beep_mixer_controls[] = {
  	SOC_DAPM_SINGLE("Beep Capture Switch", ADAU1781_DMIC_BEEP_CTRL,
  		3, 1, 0),
  };
  
  static const struct snd_kcontrol_new adau1781_left_mixer_controls[] = {
  	SOC_DAPM_SINGLE_AUTODISABLE("Switch",
  		ADAU1781_LEFT_PLAYBACK_MIXER, 5, 1, 0),
  	SOC_DAPM_SINGLE_TLV("Beep Playback Volume",
  		ADAU1781_LEFT_PLAYBACK_MIXER, 1, 8, 0, adau1781_sidetone_tlv),
  };
  
  static const struct snd_kcontrol_new adau1781_right_mixer_controls[] = {
  	SOC_DAPM_SINGLE_AUTODISABLE("Switch",
  		ADAU1781_RIGHT_PLAYBACK_MIXER, 6, 1, 0),
  	SOC_DAPM_SINGLE_TLV("Beep Playback Volume",
  		ADAU1781_LEFT_PLAYBACK_MIXER, 1, 8, 0, adau1781_sidetone_tlv),
  };
  
  static const struct snd_kcontrol_new adau1781_mono_mixer_controls[] = {
  	SOC_DAPM_SINGLE_AUTODISABLE("Left Switch",
  		ADAU1781_MONO_PLAYBACK_MIXER, 7, 1, 0),
  	SOC_DAPM_SINGLE_AUTODISABLE("Right Switch",
  		 ADAU1781_MONO_PLAYBACK_MIXER, 6, 1, 0),
  	SOC_DAPM_SINGLE_TLV("Beep Playback Volume",
  		ADAU1781_MONO_PLAYBACK_MIXER, 2, 8, 0, adau1781_sidetone_tlv),
  };
  
  static int adau1781_dejitter_fixup(struct snd_soc_dapm_widget *w,
  	struct snd_kcontrol *kcontrol, int event)
  {
  	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
  	struct adau *adau = snd_soc_codec_get_drvdata(codec);
  
  	/* After any power changes have been made the dejitter circuit
  	 * has to be reinitialized. */
  	regmap_write(adau->regmap, ADAU1781_DEJITTER, 0);
  	if (!adau->master)
  		regmap_write(adau->regmap, ADAU1781_DEJITTER, 5);
  
  	return 0;
  }
  
  static const struct snd_soc_dapm_widget adau1781_dapm_widgets[] = {
  	SND_SOC_DAPM_PGA("Left PGA", ADAU1781_LEFT_PGA, 0, 0, NULL, 0),
  	SND_SOC_DAPM_PGA("Right PGA", ADAU1781_RIGHT_PGA, 0, 0, NULL, 0),
  
  	SND_SOC_DAPM_OUT_DRV("Speaker", ADAU1781_SPEAKER, 0, 0, NULL, 0),
  
  	SOC_MIXER_NAMED_CTL_ARRAY("Beep Mixer", ADAU17X1_MICBIAS, 4, 0,
  		adau1781_beep_mixer_controls),
  
  	SOC_MIXER_ARRAY("Left Lineout Mixer", SND_SOC_NOPM, 0, 0,
  		adau1781_left_mixer_controls),
  	SOC_MIXER_ARRAY("Right Lineout Mixer", SND_SOC_NOPM, 0, 0,
  		adau1781_right_mixer_controls),
  	SOC_MIXER_ARRAY("Mono Mixer", SND_SOC_NOPM, 0, 0,
  		adau1781_mono_mixer_controls),
  
  	SND_SOC_DAPM_SUPPLY("Serial Input Routing", ADAU1781_DIG_PWDN0,
  		2, 0, NULL, 0),
  	SND_SOC_DAPM_SUPPLY("Serial Output Routing", ADAU1781_DIG_PWDN0,
  		3, 0, NULL, 0),
  	SND_SOC_DAPM_SUPPLY("Clock Domain Transfer", ADAU1781_DIG_PWDN0,
  		5, 0, NULL, 0),
  	SND_SOC_DAPM_SUPPLY("Serial Ports", ADAU1781_DIG_PWDN0, 4, 0, NULL, 0),
  	SND_SOC_DAPM_SUPPLY("ADC Engine", ADAU1781_DIG_PWDN0, 7, 0, NULL, 0),
  	SND_SOC_DAPM_SUPPLY("DAC Engine", ADAU1781_DIG_PWDN1, 0, 0, NULL, 0),
  	SND_SOC_DAPM_SUPPLY("Digital Mic", ADAU1781_DIG_PWDN1, 1, 0, NULL, 0),
  
  	SND_SOC_DAPM_SUPPLY("Sound Engine", ADAU1781_DIG_PWDN0, 0, 0, NULL, 0),
  	SND_SOC_DAPM_SUPPLY_S("SYSCLK", 1, ADAU1781_DIG_PWDN0, 1, 0, NULL, 0),
  
  	SND_SOC_DAPM_SUPPLY("Zero Crossing Detector", ADAU1781_DIG_PWDN1, 2, 0,
  		NULL, 0),
  
  	SND_SOC_DAPM_POST("Dejitter fixup", adau1781_dejitter_fixup),
  
  	SND_SOC_DAPM_INPUT("BEEP"),
  
  	SND_SOC_DAPM_OUTPUT("AOUTL"),
  	SND_SOC_DAPM_OUTPUT("AOUTR"),
  	SND_SOC_DAPM_OUTPUT("SP"),
  	SND_SOC_DAPM_INPUT("LMIC"),
  	SND_SOC_DAPM_INPUT("RMIC"),
  };
  
  static const struct snd_soc_dapm_route adau1781_dapm_routes[] = {
  	{ "Left Lineout Mixer", NULL, "Left Playback Enable" },
  	{ "Right Lineout Mixer", NULL, "Right Playback Enable" },
  
  	{ "Left Lineout Mixer", "Beep Playback Volume", "Beep Mixer" },
  	{ "Left Lineout Mixer", "Switch", "Left DAC" },
  
  	{ "Right Lineout Mixer", "Beep Playback Volume", "Beep Mixer" },
  	{ "Right Lineout Mixer", "Switch", "Right DAC" },
  
  	{ "Mono Mixer", "Beep Playback Volume", "Beep Mixer" },
  	{ "Mono Mixer", "Right Switch", "Right DAC" },
  	{ "Mono Mixer", "Left Switch", "Left DAC" },
  	{ "Speaker", NULL, "Mono Mixer" },
  
  	{ "Mono Mixer", NULL, "SYSCLK" },
  	{ "Left Lineout Mixer", NULL, "SYSCLK" },
  	{ "Left Lineout Mixer", NULL, "SYSCLK" },
  
  	{ "Beep Mixer", "Beep Capture Switch", "BEEP" },
  	{ "Beep Mixer", NULL, "Zero Crossing Detector" },
  
  	{ "Left DAC", NULL, "DAC Engine" },
  	{ "Right DAC", NULL, "DAC Engine" },
  
  	{ "Sound Engine", NULL, "SYSCLK" },
  	{ "DSP", NULL, "Sound Engine" },
  
  	{ "Left Decimator", NULL, "ADC Engine" },
  	{ "Right Decimator", NULL, "ADC Engine" },
  
  	{ "AIFCLK", NULL, "SYSCLK" },
  
  	{ "Playback", NULL, "Serial Input Routing" },
  	{ "Playback", NULL, "Serial Ports" },
  	{ "Playback", NULL, "Clock Domain Transfer" },
  	{ "Capture", NULL, "Serial Output Routing" },
  	{ "Capture", NULL, "Serial Ports" },
  	{ "Capture", NULL, "Clock Domain Transfer" },
  
  	{ "AOUTL", NULL, "Left Lineout Mixer" },
  	{ "AOUTR", NULL, "Right Lineout Mixer" },
  	{ "SP", NULL, "Speaker" },
  };
  
  static const struct snd_soc_dapm_route adau1781_adc_dapm_routes[] = {
  	{ "Left PGA", NULL, "LMIC" },
  	{ "Right PGA", NULL, "RMIC" },
  
  	{ "Left Decimator", NULL, "Left PGA" },
  	{ "Right Decimator", NULL, "Right PGA" },
  };
  
  static const char * const adau1781_dmic_select_text[] = {
  	"DMIC1", "DMIC2",
  };
  
  static SOC_ENUM_SINGLE_VIRT_DECL(adau1781_dmic_select_enum,
  	adau1781_dmic_select_text);
  
  static const struct snd_kcontrol_new adau1781_dmic_mux =
  	SOC_DAPM_ENUM("DMIC Select", adau1781_dmic_select_enum);
  
  static const struct snd_soc_dapm_widget adau1781_dmic_dapm_widgets[] = {
  	SND_SOC_DAPM_MUX("DMIC Select", SND_SOC_NOPM, 0, 0, &adau1781_dmic_mux),
  
  	SND_SOC_DAPM_ADC("DMIC1", NULL, ADAU1781_DMIC_BEEP_CTRL, 4, 0),
  	SND_SOC_DAPM_ADC("DMIC2", NULL, ADAU1781_DMIC_BEEP_CTRL, 5, 0),
  };
  
  static const struct snd_soc_dapm_route adau1781_dmic_dapm_routes[] = {
  	{ "DMIC1", NULL, "LMIC" },
  	{ "DMIC2", NULL, "RMIC" },
  
  	{ "DMIC1", NULL, "Digital Mic" },
  	{ "DMIC2", NULL, "Digital Mic" },
  
  	{ "DMIC Select", "DMIC1", "DMIC1" },
  	{ "DMIC Select", "DMIC2", "DMIC2" },
  
  	{ "Left Decimator", NULL, "DMIC Select" },
  	{ "Right Decimator", NULL, "DMIC Select" },
  };
  
  static int adau1781_set_bias_level(struct snd_soc_codec *codec,
  		enum snd_soc_bias_level level)
  {
  	struct adau *adau = snd_soc_codec_get_drvdata(codec);
  
  	switch (level) {
  	case SND_SOC_BIAS_ON:
  		break;
  	case SND_SOC_BIAS_PREPARE:
  		break;
  	case SND_SOC_BIAS_STANDBY:
  		regmap_update_bits(adau->regmap, ADAU17X1_CLOCK_CONTROL,
  			ADAU17X1_CLOCK_CONTROL_SYSCLK_EN,
  			ADAU17X1_CLOCK_CONTROL_SYSCLK_EN);
  
  		/* Precharge */
  		regmap_update_bits(adau->regmap, ADAU1781_DIG_PWDN1, 0x8, 0x8);
  		break;
  	case SND_SOC_BIAS_OFF:
  		regmap_update_bits(adau->regmap, ADAU1781_DIG_PWDN1, 0xc, 0x0);
  		regmap_update_bits(adau->regmap, ADAU17X1_CLOCK_CONTROL,
  			ADAU17X1_CLOCK_CONTROL_SYSCLK_EN, 0);
  		break;
  	}
  
  	return 0;
  }
  
  static bool adau1781_readable_register(struct device *dev, unsigned int reg)
  {
  	switch (reg) {
  	case ADAU1781_DMIC_BEEP_CTRL:
  	case ADAU1781_LEFT_PGA:
  	case ADAU1781_RIGHT_PGA:
  	case ADAU1781_LEFT_PLAYBACK_MIXER:
  	case ADAU1781_RIGHT_PLAYBACK_MIXER:
  	case ADAU1781_MONO_PLAYBACK_MIXER:
  	case ADAU1781_LEFT_LINEOUT:
  	case ADAU1781_RIGHT_LINEOUT:
  	case ADAU1781_SPEAKER:
  	case ADAU1781_BEEP_ZC:
  	case ADAU1781_DEJITTER:
  	case ADAU1781_DIG_PWDN0:
  	case ADAU1781_DIG_PWDN1:
  		return true;
  	default:
  		break;
  	}
  
  	return adau17x1_readable_register(dev, reg);
  }
  
  static int adau1781_set_input_mode(struct adau *adau, unsigned int reg,
  	bool differential)
  {
  	unsigned int val;
  
  	if (differential)
  		val = ADAU1781_INPUT_DIFFERNTIAL;
  	else
  		val = 0;
  
  	return regmap_update_bits(adau->regmap, reg,
  		ADAU1781_INPUT_DIFFERNTIAL, val);
  }
  
  static int adau1781_codec_probe(struct snd_soc_codec *codec)
  {
  	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
  	struct adau1781_platform_data *pdata = dev_get_platdata(codec->dev);
  	struct adau *adau = snd_soc_codec_get_drvdata(codec);
  	int ret;
  
  	ret = adau17x1_add_widgets(codec);
  	if (ret)
  		return ret;
  
  	if (pdata) {
  		ret = adau1781_set_input_mode(adau, ADAU1781_LEFT_PGA,
  			pdata->left_input_differential);
  		if (ret)
  			return ret;
  		ret = adau1781_set_input_mode(adau, ADAU1781_RIGHT_PGA,
  			pdata->right_input_differential);
  		if (ret)
  			return ret;
  	}
  
  	if (pdata && pdata->use_dmic) {
  		ret = snd_soc_dapm_new_controls(dapm,
  			adau1781_dmic_dapm_widgets,
  			ARRAY_SIZE(adau1781_dmic_dapm_widgets));
  		if (ret)
  			return ret;
  		ret = snd_soc_dapm_add_routes(dapm, adau1781_dmic_dapm_routes,
  			ARRAY_SIZE(adau1781_dmic_dapm_routes));
  		if (ret)
  			return ret;
  	} else {
  		ret = snd_soc_dapm_add_routes(dapm, adau1781_adc_dapm_routes,
  			ARRAY_SIZE(adau1781_adc_dapm_routes));
  		if (ret)
  			return ret;
  	}
  
  	ret = adau17x1_add_routes(codec);
  	if (ret < 0)
  		return ret;
  
  	return 0;
  }
  
  static const struct snd_soc_codec_driver adau1781_codec_driver = {
  	.probe = adau1781_codec_probe,
  	.resume = adau17x1_resume,
  	.set_bias_level = adau1781_set_bias_level,
  	.suspend_bias_off = true,
  
  	.component_driver = {
  		.controls		= adau1781_controls,
  		.num_controls		= ARRAY_SIZE(adau1781_controls),
  		.dapm_widgets		= adau1781_dapm_widgets,
  		.num_dapm_widgets	= ARRAY_SIZE(adau1781_dapm_widgets),
  		.dapm_routes		= adau1781_dapm_routes,
  		.num_dapm_routes	= ARRAY_SIZE(adau1781_dapm_routes),
  	},
  };
  
  #define ADAU1781_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | \
  	SNDRV_PCM_FMTBIT_S32_LE)
  
  static struct snd_soc_dai_driver adau1781_dai_driver = {
  	.name = "adau-hifi",
  	.playback = {
  		.stream_name = "Playback",
  		.channels_min = 2,
  		.channels_max = 8,
  		.rates = SNDRV_PCM_RATE_8000_96000,
  		.formats = ADAU1781_FORMATS,
  	},
  	.capture = {
  		.stream_name = "Capture",
  		.channels_min = 2,
  		.channels_max = 8,
  		.rates = SNDRV_PCM_RATE_8000_96000,
  		.formats = ADAU1781_FORMATS,
  	},
  	.ops = &adau17x1_dai_ops,
  };
  
  const struct regmap_config adau1781_regmap_config = {
  	.val_bits		= 8,
  	.reg_bits		= 16,
  	.max_register		= 0x40f8,
  	.reg_defaults		= adau1781_reg_defaults,
  	.num_reg_defaults	= ARRAY_SIZE(adau1781_reg_defaults),
  	.readable_reg		= adau1781_readable_register,
  	.volatile_reg		= adau17x1_volatile_register,
  	.precious_reg		= adau17x1_precious_register,
  	.cache_type		= REGCACHE_RBTREE,
  };
  EXPORT_SYMBOL_GPL(adau1781_regmap_config);
  
  int adau1781_probe(struct device *dev, struct regmap *regmap,
  	enum adau17x1_type type, void (*switch_mode)(struct device *dev))
  {
  	const char *firmware_name;
  	int ret;
  
  	switch (type) {
  	case ADAU1381:
  		firmware_name = ADAU1381_FIRMWARE;
  		break;
  	case ADAU1781:
  		firmware_name = ADAU1781_FIRMWARE;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	ret = adau17x1_probe(dev, regmap, type, switch_mode, firmware_name);
  	if (ret)
  		return ret;
  
  	return snd_soc_register_codec(dev, &adau1781_codec_driver,
  		&adau1781_dai_driver, 1);
  }
  EXPORT_SYMBOL_GPL(adau1781_probe);
  
  MODULE_DESCRIPTION("ASoC ADAU1381/ADAU1781 driver");
  MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
  MODULE_LICENSE("GPL");
  