text: /*
   * ALSA SoC TLV320AIC23 codec driver
   *
   * Author:      Arun KS, <arunks@mistralsolutions.com>
   * Copyright:   (C) 2008 Mistral Solutions Pvt Ltd.,
   *
   * Based on sound/soc/codecs/wm8731.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.
   *
   * Notes:
   *  The AIC23 is a driver for a low power stereo audio
   *  codec tlv320aic23
   *
   *  The machine layer should disable unsupported inputs/outputs by
   *  snd_soc_dapm_disable_pin(codec, "LHPOUT"), etc.
   */
  
  #include <linux/module.h>
  #include <linux/moduleparam.h>
  #include <linux/init.h>
  #include <linux/delay.h>
  #include <linux/pm.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/tlv.h>
  #include <sound/initval.h>
  
  #include "tlv320aic23.h"
  
  /*
   * AIC23 register cache
   */
  static const struct reg_default tlv320aic23_reg[] = {
  	{  0, 0x0097 },
  	{  1, 0x0097 },
  	{  2, 0x00F9 },
  	{  3, 0x00F9 },
  	{  4, 0x001A },
  	{  5, 0x0004 },
  	{  6, 0x0007 },
  	{  7, 0x0001 },
  	{  8, 0x0020 },
  	{  9, 0x0000 },
  };
  
  const struct regmap_config tlv320aic23_regmap = {
  	.reg_bits = 7,
  	.val_bits = 9,
  
  	.max_register = TLV320AIC23_RESET,
  	.reg_defaults = tlv320aic23_reg,
  	.num_reg_defaults = ARRAY_SIZE(tlv320aic23_reg),
  	.cache_type = REGCACHE_RBTREE,
  };
  EXPORT_SYMBOL(tlv320aic23_regmap);
  
  static const char *rec_src_text[] = { "Line", "Mic" };
  static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};
  
  static SOC_ENUM_SINGLE_DECL(rec_src_enum,
  			    TLV320AIC23_ANLG, 2, rec_src_text);
  
  static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls =
  SOC_DAPM_ENUM("Input Select", rec_src_enum);
  
  static SOC_ENUM_SINGLE_DECL(tlv320aic23_rec_src,
  			    TLV320AIC23_ANLG, 2, rec_src_text);
  static SOC_ENUM_SINGLE_DECL(tlv320aic23_deemph,
  			    TLV320AIC23_DIGT, 1, deemph_text);
  
  static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0);
  static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0);
  static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0);
  
  static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
  	struct snd_ctl_elem_value *ucontrol)
  {
  	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
  	u16 val, reg;
  
  	val = (ucontrol->value.integer.value[0] & 0x07);
  
  	/* linear conversion to userspace
  	* 000	=	-6db
  	* 001	=	-9db
  	* 010	=	-12db
  	* 011	=	-18db (Min)
  	* 100	=	0db (Max)
  	*/
  	val = (val >= 4) ? 4  : (3 - val);
  
  	reg = snd_soc_read(codec, TLV320AIC23_ANLG) & (~0x1C0);
  	snd_soc_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
  
  	return 0;
  }
  
  static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
  	struct snd_ctl_elem_value *ucontrol)
  {
  	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
  	u16 val;
  
  	val = snd_soc_read(codec, TLV320AIC23_ANLG) & (0x1C0);
  	val = val >> 6;
  	val = (val >= 4) ? 4  : (3 -  val);
  	ucontrol->value.integer.value[0] = val;
  	return 0;
  
  }
  
  static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = {
  	SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL,
  			 TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv),
  	SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1),
  	SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL,
  		     TLV320AIC23_RINVOL, 7, 1, 0),
  	SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL,
  			 TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv),
  	SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1),
  	SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0),
  	SOC_SINGLE_EXT_TLV("Sidetone Volume", TLV320AIC23_ANLG, 6, 4, 0,
  			   snd_soc_tlv320aic23_get_volsw,
  			   snd_soc_tlv320aic23_put_volsw, sidetone_vol_tlv),
  	SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph),
  };
  
  /* PGA Mixer controls for Line and Mic switch */
  static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = {
  	SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0),
  	SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0),
  	SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0),
  };
  
  static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
  	SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1),
  	SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1),
  	SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
  			 &tlv320aic23_rec_src_mux_controls),
  	SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1,
  			   &tlv320aic23_output_mixer_controls[0],
  			   ARRAY_SIZE(tlv320aic23_output_mixer_controls)),
  	SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0),
  	SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0),
  
  	SND_SOC_DAPM_OUTPUT("LHPOUT"),
  	SND_SOC_DAPM_OUTPUT("RHPOUT"),
  	SND_SOC_DAPM_OUTPUT("LOUT"),
  	SND_SOC_DAPM_OUTPUT("ROUT"),
  
  	SND_SOC_DAPM_INPUT("LLINEIN"),
  	SND_SOC_DAPM_INPUT("RLINEIN"),
  
  	SND_SOC_DAPM_INPUT("MICIN"),
  };
  
  static const struct snd_soc_dapm_route tlv320aic23_intercon[] = {
  	/* Output Mixer */
  	{"Output Mixer", "Line Bypass Switch", "Line Input"},
  	{"Output Mixer", "Playback Switch", "DAC"},
  	{"Output Mixer", "Mic Sidetone Switch", "Mic Input"},
  
  	/* Outputs */
  	{"RHPOUT", NULL, "Output Mixer"},
  	{"LHPOUT", NULL, "Output Mixer"},
  	{"LOUT", NULL, "Output Mixer"},
  	{"ROUT", NULL, "Output Mixer"},
  
  	/* Inputs */
  	{"Line Input", "NULL", "LLINEIN"},
  	{"Line Input", "NULL", "RLINEIN"},
  
  	{"Mic Input", "NULL", "MICIN"},
  
  	/* input mux */
  	{"Capture Source", "Line", "Line Input"},
  	{"Capture Source", "Mic", "Mic Input"},
  	{"ADC", NULL, "Capture Source"},
  
  };
  
  /* AIC23 driver data */
  struct aic23 {
  	struct regmap *regmap;
  	int mclk;
  	int requested_adc;
  	int requested_dac;
  };
  
  /*
   * Common Crystals used
   * 11.2896 Mhz /128 = *88.2k  /192 = 58.8k
   * 12.0000 Mhz /125 = *96k    /136 = 88.235K
   * 12.2880 Mhz /128 = *96k    /192 = 64k
   * 16.9344 Mhz /128 = 132.3k /192 = *88.2k
   * 18.4320 Mhz /128 = 144k   /192 = *96k
   */
  
  /*
   * Normal BOSR 0-256/2 = 128, 1-384/2 = 192
   * USB BOSR 0-250/2 = 125, 1-272/2 = 136
   */
  static const int bosr_usb_divisor_table[] = {
  	128, 125, 192, 136
  };
  #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7))
  #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11)        | (1<<15))
  static const unsigned short sr_valid_mask[] = {
  	LOWER_GROUP|UPPER_GROUP,	/* Normal, bosr - 0*/
  	LOWER_GROUP,			/* Usb, bosr - 0*/
  	LOWER_GROUP|UPPER_GROUP,	/* Normal, bosr - 1*/
  	UPPER_GROUP,			/* Usb, bosr - 1*/
  };
  /*
   * Every divisor is a factor of 11*12
   */
  #define SR_MULT (11*12)
  #define A(x) (SR_MULT/x)
  static const unsigned char sr_adc_mult_table[] = {
  	A(2), A(2), A(12), A(12),  0, 0, A(3), A(1),
  	A(2), A(2), A(11), A(11),  0, 0, 0, A(1)
  };
  static const unsigned char sr_dac_mult_table[] = {
  	A(2), A(12), A(2), A(12),  0, 0, A(3), A(1),
  	A(2), A(11), A(2), A(11),  0, 0, 0, A(1)
  };
  
  static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc,
  		int dac, int dac_l, int dac_h, int need_dac)
  {
  	if ((adc >= adc_l) && (adc <= adc_h) &&
  			(dac >= dac_l) && (dac <= dac_h)) {
  		int diff_adc = need_adc - adc;
  		int diff_dac = need_dac - dac;
  		return abs(diff_adc) + abs(diff_dac);
  	}
  	return UINT_MAX;
  }
  
  static int find_rate(int mclk, u32 need_adc, u32 need_dac)
  {
  	int i, j;
  	int best_i = -1;
  	int best_j = -1;
  	int best_div = 0;
  	unsigned best_score = UINT_MAX;
  	int adc_l, adc_h, dac_l, dac_h;
  
  	need_adc *= SR_MULT;
  	need_dac *= SR_MULT;
  	/*
  	 * rates given are +/- 1/32
  	 */
  	adc_l = need_adc - (need_adc >> 5);
  	adc_h = need_adc + (need_adc >> 5);
  	dac_l = need_dac - (need_dac >> 5);
  	dac_h = need_dac + (need_dac >> 5);
  	for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) {
  		int base = mclk / bosr_usb_divisor_table[i];
  		int mask = sr_valid_mask[i];
  		for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table);
  				j++, mask >>= 1) {
  			int adc;
  			int dac;
  			int score;
  			if ((mask & 1) == 0)
  				continue;
  			adc = base * sr_adc_mult_table[j];
  			dac = base * sr_dac_mult_table[j];
  			score = get_score(adc, adc_l, adc_h, need_adc,
  					dac, dac_l, dac_h, need_dac);
  			if (best_score > score) {
  				best_score = score;
  				best_i = i;
  				best_j = j;
  				best_div = 0;
  			}
  			score = get_score((adc >> 1), adc_l, adc_h, need_adc,
  					(dac >> 1), dac_l, dac_h, need_dac);
  			/* prefer to have a /2 */
  			if ((score != UINT_MAX) && (best_score >= score)) {
  				best_score = score;
  				best_i = i;
  				best_j = j;
  				best_div = 1;
  			}
  		}
  	}
  	return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT);
  }
  
  #ifdef DEBUG
  static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk,
  		u32 *sample_rate_adc, u32 *sample_rate_dac)
  {
  	int src = snd_soc_read(codec, TLV320AIC23_SRATE);
  	int sr = (src >> 2) & 0x0f;
  	int val = (mclk / bosr_usb_divisor_table[src & 3]);
  	int adc = (val * sr_adc_mult_table[sr]) / SR_MULT;
  	int dac = (val * sr_dac_mult_table[sr]) / SR_MULT;
  	if (src & TLV320AIC23_CLKIN_HALF) {
  		adc >>= 1;
  		dac >>= 1;
  	}
  	*sample_rate_adc = adc;
  	*sample_rate_dac = dac;
  }
  #endif
  
  static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk,
  		u32 sample_rate_adc, u32 sample_rate_dac)
  {
  	/* Search for the right sample rate */
  	int data = find_rate(mclk, sample_rate_adc, sample_rate_dac);
  	if (data < 0) {
  		printk(KERN_ERR "%s:Invalid rate %u,%u requested\n",
  				__func__, sample_rate_adc, sample_rate_dac);
  		return -EINVAL;
  	}
  	snd_soc_write(codec, TLV320AIC23_SRATE, data);
  #ifdef DEBUG
  	{
  		u32 adc, dac;
  		get_current_sample_rates(codec, mclk, &adc, &dac);
  		printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n",
  			adc, dac, data);
  	}
  #endif
  	return 0;
  }
  
  static int tlv320aic23_hw_params(struct snd_pcm_substream *substream,
  				 struct snd_pcm_hw_params *params,
  				 struct snd_soc_dai *dai)
  {
  	struct snd_soc_codec *codec = dai->codec;
  	u16 iface_reg;
  	int ret;
  	struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
  	u32 sample_rate_adc = aic23->requested_adc;
  	u32 sample_rate_dac = aic23->requested_dac;
  	u32 sample_rate = params_rate(params);
  
  	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
  		aic23->requested_dac = sample_rate_dac = sample_rate;
  		if (!sample_rate_adc)
  			sample_rate_adc = sample_rate;
  	} else {
  		aic23->requested_adc = sample_rate_adc = sample_rate;
  		if (!sample_rate_dac)
  			sample_rate_dac = sample_rate;
  	}
  	ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc,
  			sample_rate_dac);
  	if (ret < 0)
  		return ret;
  
  	iface_reg = snd_soc_read(codec, TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
  
  	switch (params_width(params)) {
  	case 16:
  		break;
  	case 20:
  		iface_reg |= (0x01 << 2);
  		break;
  	case 24:
  		iface_reg |= (0x02 << 2);
  		break;
  	case 32:
  		iface_reg |= (0x03 << 2);
  		break;
  	}
  	snd_soc_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
  
  	return 0;
  }
  
  static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream,
  				   struct snd_soc_dai *dai)
  {
  	struct snd_soc_codec *codec = dai->codec;
  
  	/* set active */
  	snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0001);
  
  	return 0;
  }
  
  static void tlv320aic23_shutdown(struct snd_pcm_substream *substream,
  				 struct snd_soc_dai *dai)
  {
  	struct snd_soc_codec *codec = dai->codec;
  	struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
  
  	/* deactivate */
  	if (!snd_soc_codec_is_active(codec)) {
  		udelay(50);
  		snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0);
  	}
  	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
  		aic23->requested_dac = 0;
  	else
  		aic23->requested_adc = 0;
  }
  
  static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute)
  {
  	struct snd_soc_codec *codec = dai->codec;
  	u16 reg;
  
  	reg = snd_soc_read(codec, TLV320AIC23_DIGT);
  	if (mute)
  		reg |= TLV320AIC23_DACM_MUTE;
  
  	else
  		reg &= ~TLV320AIC23_DACM_MUTE;
  
  	snd_soc_write(codec, TLV320AIC23_DIGT, reg);
  
  	return 0;
  }
  
  static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
  				   unsigned int fmt)
  {
  	struct snd_soc_codec *codec = codec_dai->codec;
  	u16 iface_reg;
  
  	iface_reg = snd_soc_read(codec, TLV320AIC23_DIGT_FMT) & (~0x03);
  
  	/* set master/slave audio interface */
  	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
  	case SND_SOC_DAIFMT_CBM_CFM:
  		iface_reg |= TLV320AIC23_MS_MASTER;
  		break;
  	case SND_SOC_DAIFMT_CBS_CFS:
  		iface_reg &= ~TLV320AIC23_MS_MASTER;
  		break;
  	default:
  		return -EINVAL;
  
  	}
  
  	/* interface format */
  	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
  	case SND_SOC_DAIFMT_I2S:
  		iface_reg |= TLV320AIC23_FOR_I2S;
  		break;
  	case SND_SOC_DAIFMT_DSP_A:
  		iface_reg |= TLV320AIC23_LRP_ON;
  	case SND_SOC_DAIFMT_DSP_B:
  		iface_reg |= TLV320AIC23_FOR_DSP;
  		break;
  	case SND_SOC_DAIFMT_RIGHT_J:
  		break;
  	case SND_SOC_DAIFMT_LEFT_J:
  		iface_reg |= TLV320AIC23_FOR_LJUST;
  		break;
  	default:
  		return -EINVAL;
  
  	}
  
  	snd_soc_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
  
  	return 0;
  }
  
  static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai,
  				      int clk_id, unsigned int freq, int dir)
  {
  	struct aic23 *aic23 = snd_soc_dai_get_drvdata(codec_dai);
  	aic23->mclk = freq;
  	return 0;
  }
  
  static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec,
  				      enum snd_soc_bias_level level)
  {
  	u16 reg = snd_soc_read(codec, TLV320AIC23_PWR) & 0x17f;
  
  	switch (level) {
  	case SND_SOC_BIAS_ON:
  		/* vref/mid, osc on, dac unmute */
  		reg &= ~(TLV320AIC23_DEVICE_PWR_OFF | TLV320AIC23_OSC_OFF | \
  			TLV320AIC23_DAC_OFF);
  		snd_soc_write(codec, TLV320AIC23_PWR, reg);
  		break;
  	case SND_SOC_BIAS_PREPARE:
  		break;
  	case SND_SOC_BIAS_STANDBY:
  		/* everything off except vref/vmid, */
  		snd_soc_write(codec, TLV320AIC23_PWR,
  			      reg | TLV320AIC23_CLK_OFF);
  		break;
  	case SND_SOC_BIAS_OFF:
  		/* everything off, dac mute, inactive */
  		snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0);
  		snd_soc_write(codec, TLV320AIC23_PWR, 0x1ff);
  		break;
  	}
  	return 0;
  }
  
  #define AIC23_RATES	SNDRV_PCM_RATE_8000_96000
  #define AIC23_FORMATS	(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
  			 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
  
  static const struct snd_soc_dai_ops tlv320aic23_dai_ops = {
  	.prepare	= tlv320aic23_pcm_prepare,
  	.hw_params	= tlv320aic23_hw_params,
  	.shutdown	= tlv320aic23_shutdown,
  	.digital_mute	= tlv320aic23_mute,
  	.set_fmt	= tlv320aic23_set_dai_fmt,
  	.set_sysclk	= tlv320aic23_set_dai_sysclk,
  };
  
  static struct snd_soc_dai_driver tlv320aic23_dai = {
  	.name = "tlv320aic23-hifi",
  	.playback = {
  		     .stream_name = "Playback",
  		     .channels_min = 2,
  		     .channels_max = 2,
  		     .rates = AIC23_RATES,
  		     .formats = AIC23_FORMATS,},
  	.capture = {
  		    .stream_name = "Capture",
  		    .channels_min = 2,
  		    .channels_max = 2,
  		    .rates = AIC23_RATES,
  		    .formats = AIC23_FORMATS,},
  	.ops = &tlv320aic23_dai_ops,
  };
  
  static int tlv320aic23_resume(struct snd_soc_codec *codec)
  {
  	struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
  	regcache_mark_dirty(aic23->regmap);
  	regcache_sync(aic23->regmap);
  
  	return 0;
  }
  
  static int tlv320aic23_codec_probe(struct snd_soc_codec *codec)
  {
  	/* Reset codec */
  	snd_soc_write(codec, TLV320AIC23_RESET, 0);
  
  	snd_soc_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);
  
  	/* Unmute input */
  	snd_soc_update_bits(codec, TLV320AIC23_LINVOL,
  			    TLV320AIC23_LIM_MUTED, TLV320AIC23_LRS_ENABLED);
  
  	snd_soc_update_bits(codec, TLV320AIC23_RINVOL,
  			    TLV320AIC23_LIM_MUTED, TLV320AIC23_LRS_ENABLED);
  
  	snd_soc_update_bits(codec, TLV320AIC23_ANLG,
  			    TLV320AIC23_BYPASS_ON | TLV320AIC23_MICM_MUTED,
  			    0);
  
  	/* Default output volume */
  	snd_soc_write(codec, TLV320AIC23_LCHNVOL,
  		      TLV320AIC23_DEFAULT_OUT_VOL & TLV320AIC23_OUT_VOL_MASK);
  	snd_soc_write(codec, TLV320AIC23_RCHNVOL,
  		      TLV320AIC23_DEFAULT_OUT_VOL & TLV320AIC23_OUT_VOL_MASK);
  
  	snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x1);
  
  	return 0;
  }
  
  static struct snd_soc_codec_driver soc_codec_dev_tlv320aic23 = {
  	.probe = tlv320aic23_codec_probe,
  	.resume = tlv320aic23_resume,
  	.set_bias_level = tlv320aic23_set_bias_level,
  	.suspend_bias_off = true,
  
  	.controls = tlv320aic23_snd_controls,
  	.num_controls = ARRAY_SIZE(tlv320aic23_snd_controls),
  	.dapm_widgets = tlv320aic23_dapm_widgets,
  	.num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
  	.dapm_routes = tlv320aic23_intercon,
  	.num_dapm_routes = ARRAY_SIZE(tlv320aic23_intercon),
  };
  
  int tlv320aic23_probe(struct device *dev, struct regmap *regmap)
  {
  	struct aic23 *aic23;
  
  	if (IS_ERR(regmap))
  		return PTR_ERR(regmap);
  
  	aic23 = devm_kzalloc(dev, sizeof(struct aic23), GFP_KERNEL);
  	if (aic23 == NULL)
  		return -ENOMEM;
  
  	aic23->regmap = regmap;
  
  	dev_set_drvdata(dev, aic23);
  
  	return snd_soc_register_codec(dev, &soc_codec_dev_tlv320aic23,
  				      &tlv320aic23_dai, 1);
  }
  EXPORT_SYMBOL(tlv320aic23_probe);
  
  MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver");
  MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
  MODULE_LICENSE("GPL");
  