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0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  * AD193X Audio Codec driver supporting AD1936/7/8/9
0004  *
0005  * Copyright 2010 Analog Devices Inc.
0006  */
0007 
0008 #include <linux/module.h>
0009 #include <linux/kernel.h>
0010 #include <linux/device.h>
0011 #include <linux/regmap.h>
0012 #include <linux/slab.h>
0013 #include <sound/core.h>
0014 #include <sound/pcm.h>
0015 #include <sound/pcm_params.h>
0016 #include <sound/initval.h>
0017 #include <sound/soc.h>
0018 #include <sound/tlv.h>
0019 
0020 #include "ad193x.h"
0021 
0022 /* codec private data */
0023 struct ad193x_priv {
0024     struct regmap *regmap;
0025     enum ad193x_type type;
0026     int sysclk;
0027 };
0028 
0029 /*
0030  * AD193X volume/mute/de-emphasis etc. controls
0031  */
0032 static const char * const ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
0033 
0034 static SOC_ENUM_SINGLE_DECL(ad193x_deemp_enum, AD193X_DAC_CTRL2, 1,
0035                 ad193x_deemp);
0036 
0037 static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
0038 
0039 static const unsigned int ad193x_sb[] = {32};
0040 
0041 static struct snd_pcm_hw_constraint_list constr = {
0042     .list = ad193x_sb,
0043     .count = ARRAY_SIZE(ad193x_sb),
0044 };
0045 
0046 static const struct snd_kcontrol_new ad193x_snd_controls[] = {
0047     /* DAC volume control */
0048     SOC_DOUBLE_R_TLV("DAC1 Volume", AD193X_DAC_L1_VOL,
0049             AD193X_DAC_R1_VOL, 0, 0xFF, 1, adau193x_tlv),
0050     SOC_DOUBLE_R_TLV("DAC2 Volume", AD193X_DAC_L2_VOL,
0051             AD193X_DAC_R2_VOL, 0, 0xFF, 1, adau193x_tlv),
0052     SOC_DOUBLE_R_TLV("DAC3 Volume", AD193X_DAC_L3_VOL,
0053             AD193X_DAC_R3_VOL, 0, 0xFF, 1, adau193x_tlv),
0054     SOC_DOUBLE_R_TLV("DAC4 Volume", AD193X_DAC_L4_VOL,
0055             AD193X_DAC_R4_VOL, 0, 0xFF, 1, adau193x_tlv),
0056 
0057     /* DAC switch control */
0058     SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
0059         AD193X_DACR1_MUTE, 1, 1),
0060     SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
0061         AD193X_DACR2_MUTE, 1, 1),
0062     SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
0063         AD193X_DACR3_MUTE, 1, 1),
0064     SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
0065         AD193X_DACR4_MUTE, 1, 1),
0066 
0067     /* DAC de-emphasis */
0068     SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
0069 };
0070 
0071 static const struct snd_kcontrol_new ad193x_adc_snd_controls[] = {
0072     /* ADC switch control */
0073     SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
0074         AD193X_ADCR1_MUTE, 1, 1),
0075     SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
0076         AD193X_ADCR2_MUTE, 1, 1),
0077 
0078     /* ADC high-pass filter */
0079     SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
0080             AD193X_ADC_HIGHPASS_FILTER, 1, 0),
0081 };
0082 
0083 static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
0084     SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
0085     SND_SOC_DAPM_PGA("DAC Output", AD193X_DAC_CTRL0, 0, 1, NULL, 0),
0086     SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
0087     SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0),
0088     SND_SOC_DAPM_VMID("VMID"),
0089     SND_SOC_DAPM_OUTPUT("DAC1OUT"),
0090     SND_SOC_DAPM_OUTPUT("DAC2OUT"),
0091     SND_SOC_DAPM_OUTPUT("DAC3OUT"),
0092     SND_SOC_DAPM_OUTPUT("DAC4OUT"),
0093 };
0094 
0095 static const struct snd_soc_dapm_widget ad193x_adc_widgets[] = {
0096     SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
0097     SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
0098     SND_SOC_DAPM_INPUT("ADC1IN"),
0099     SND_SOC_DAPM_INPUT("ADC2IN"),
0100 };
0101 
0102 static int ad193x_check_pll(struct snd_soc_dapm_widget *source,
0103                 struct snd_soc_dapm_widget *sink)
0104 {
0105     struct snd_soc_component *component = snd_soc_dapm_to_component(source->dapm);
0106     struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
0107 
0108     return !!ad193x->sysclk;
0109 }
0110 
0111 static const struct snd_soc_dapm_route audio_paths[] = {
0112     { "DAC", NULL, "SYSCLK" },
0113     { "DAC Output", NULL, "DAC" },
0114     { "DAC Output", NULL, "VMID" },
0115     { "DAC1OUT", NULL, "DAC Output" },
0116     { "DAC2OUT", NULL, "DAC Output" },
0117     { "DAC3OUT", NULL, "DAC Output" },
0118     { "DAC4OUT", NULL, "DAC Output" },
0119     { "SYSCLK", NULL, "PLL_PWR", &ad193x_check_pll },
0120 };
0121 
0122 static const struct snd_soc_dapm_route ad193x_adc_audio_paths[] = {
0123     { "ADC", NULL, "SYSCLK" },
0124     { "ADC", NULL, "ADC_PWR" },
0125     { "ADC", NULL, "ADC1IN" },
0126     { "ADC", NULL, "ADC2IN" },
0127 };
0128 
0129 static inline bool ad193x_has_adc(const struct ad193x_priv *ad193x)
0130 {
0131     switch (ad193x->type) {
0132     case AD1933:
0133     case AD1934:
0134         return false;
0135     default:
0136         break;
0137     }
0138 
0139     return true;
0140 }
0141 
0142 /*
0143  * DAI ops entries
0144  */
0145 
0146 static int ad193x_mute(struct snd_soc_dai *dai, int mute, int direction)
0147 {
0148     struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(dai->component);
0149 
0150     if (mute)
0151         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
0152                     AD193X_DAC_MASTER_MUTE,
0153                     AD193X_DAC_MASTER_MUTE);
0154     else
0155         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
0156                     AD193X_DAC_MASTER_MUTE, 0);
0157 
0158     return 0;
0159 }
0160 
0161 static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
0162                    unsigned int rx_mask, int slots, int width)
0163 {
0164     struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(dai->component);
0165     unsigned int channels;
0166 
0167     switch (slots) {
0168     case 2:
0169         channels = AD193X_2_CHANNELS;
0170         break;
0171     case 4:
0172         channels = AD193X_4_CHANNELS;
0173         break;
0174     case 8:
0175         channels = AD193X_8_CHANNELS;
0176         break;
0177     case 16:
0178         channels = AD193X_16_CHANNELS;
0179         break;
0180     default:
0181         return -EINVAL;
0182     }
0183 
0184     regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
0185         AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT);
0186     if (ad193x_has_adc(ad193x))
0187         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
0188                    AD193X_ADC_CHAN_MASK,
0189                    channels << AD193X_ADC_CHAN_SHFT);
0190 
0191     return 0;
0192 }
0193 
0194 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
0195         unsigned int fmt)
0196 {
0197     struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(codec_dai->component);
0198     unsigned int adc_serfmt = 0;
0199     unsigned int dac_serfmt = 0;
0200     unsigned int adc_fmt = 0;
0201     unsigned int dac_fmt = 0;
0202 
0203     /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
0204      * with TDM), ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A) and DAC I2S mode
0205      * (SND_SOC_DAIFMT_I2S)
0206      */
0207     switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
0208     case SND_SOC_DAIFMT_I2S:
0209         adc_serfmt |= AD193X_ADC_SERFMT_TDM;
0210         dac_serfmt |= AD193X_DAC_SERFMT_STEREO;
0211         break;
0212     case SND_SOC_DAIFMT_DSP_A:
0213         adc_serfmt |= AD193X_ADC_SERFMT_AUX;
0214         dac_serfmt |= AD193X_DAC_SERFMT_TDM;
0215         break;
0216     default:
0217         if (ad193x_has_adc(ad193x))
0218             return -EINVAL;
0219     }
0220 
0221     switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
0222     case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
0223         break;
0224     case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
0225         adc_fmt |= AD193X_ADC_LEFT_HIGH;
0226         dac_fmt |= AD193X_DAC_LEFT_HIGH;
0227         break;
0228     case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
0229         adc_fmt |= AD193X_ADC_BCLK_INV;
0230         dac_fmt |= AD193X_DAC_BCLK_INV;
0231         break;
0232     case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
0233         adc_fmt |= AD193X_ADC_LEFT_HIGH;
0234         adc_fmt |= AD193X_ADC_BCLK_INV;
0235         dac_fmt |= AD193X_DAC_LEFT_HIGH;
0236         dac_fmt |= AD193X_DAC_BCLK_INV;
0237         break;
0238     default:
0239         return -EINVAL;
0240     }
0241 
0242     /* For DSP_*, LRCLK's polarity must be inverted */
0243     if (fmt & SND_SOC_DAIFMT_DSP_A)
0244         dac_fmt ^= AD193X_DAC_LEFT_HIGH;
0245 
0246     switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
0247     case SND_SOC_DAIFMT_CBP_CFP:
0248         adc_fmt |= AD193X_ADC_LCR_MASTER;
0249         adc_fmt |= AD193X_ADC_BCLK_MASTER;
0250         dac_fmt |= AD193X_DAC_LCR_MASTER;
0251         dac_fmt |= AD193X_DAC_BCLK_MASTER;
0252         break;
0253     case SND_SOC_DAIFMT_CBC_CFP:
0254         adc_fmt |= AD193X_ADC_LCR_MASTER;
0255         dac_fmt |= AD193X_DAC_LCR_MASTER;
0256         break;
0257     case SND_SOC_DAIFMT_CBP_CFC:
0258         adc_fmt |= AD193X_ADC_BCLK_MASTER;
0259         dac_fmt |= AD193X_DAC_BCLK_MASTER;
0260         break;
0261     case SND_SOC_DAIFMT_CBC_CFC:
0262         break;
0263     default:
0264         return -EINVAL;
0265     }
0266 
0267     if (ad193x_has_adc(ad193x)) {
0268         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
0269                    AD193X_ADC_SERFMT_MASK, adc_serfmt);
0270         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
0271                    AD193X_ADC_FMT_MASK, adc_fmt);
0272     }
0273     regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL0,
0274                AD193X_DAC_SERFMT_MASK, dac_serfmt);
0275     regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
0276         AD193X_DAC_FMT_MASK, dac_fmt);
0277 
0278     return 0;
0279 }
0280 
0281 static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
0282         int clk_id, unsigned int freq, int dir)
0283 {
0284     struct snd_soc_component *component = codec_dai->component;
0285     struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
0286     struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
0287 
0288     if (clk_id == AD193X_SYSCLK_MCLK) {
0289         /* MCLK must be 512 x fs */
0290         if (dir == SND_SOC_CLOCK_OUT || freq != 24576000)
0291             return -EINVAL;
0292 
0293         regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL1,
0294                    AD193X_PLL_SRC_MASK,
0295                    AD193X_PLL_DAC_SRC_MCLK |
0296                    AD193X_PLL_CLK_SRC_MCLK);
0297 
0298         snd_soc_dapm_sync(dapm);
0299         return 0;
0300     }
0301     switch (freq) {
0302     case 12288000:
0303     case 18432000:
0304     case 24576000:
0305     case 36864000:
0306         ad193x->sysclk = freq;
0307         return 0;
0308     }
0309     return -EINVAL;
0310 }
0311 
0312 static int ad193x_hw_params(struct snd_pcm_substream *substream,
0313         struct snd_pcm_hw_params *params,
0314         struct snd_soc_dai *dai)
0315 {
0316     int word_len = 0, master_rate = 0;
0317     struct snd_soc_component *component = dai->component;
0318     struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
0319     bool is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
0320     u8 dacc0;
0321 
0322     dev_dbg(dai->dev, "%s() rate=%u format=%#x width=%u channels=%u\n",
0323         __func__, params_rate(params), params_format(params),
0324         params_width(params), params_channels(params));
0325 
0326 
0327     /* bit size */
0328     switch (params_width(params)) {
0329     case 16:
0330         word_len = 3;
0331         break;
0332     case 20:
0333         word_len = 1;
0334         break;
0335     case 24:
0336     case 32:
0337         word_len = 0;
0338         break;
0339     }
0340 
0341     switch (ad193x->sysclk) {
0342     case 12288000:
0343         master_rate = AD193X_PLL_INPUT_256;
0344         break;
0345     case 18432000:
0346         master_rate = AD193X_PLL_INPUT_384;
0347         break;
0348     case 24576000:
0349         master_rate = AD193X_PLL_INPUT_512;
0350         break;
0351     case 36864000:
0352         master_rate = AD193X_PLL_INPUT_768;
0353         break;
0354     }
0355 
0356     if (is_playback) {
0357         switch (params_rate(params)) {
0358         case 48000:
0359             dacc0 = AD193X_DAC_SR_48;
0360             break;
0361         case 96000:
0362             dacc0 = AD193X_DAC_SR_96;
0363             break;
0364         case 192000:
0365             dacc0 = AD193X_DAC_SR_192;
0366             break;
0367         default:
0368             dev_err(dai->dev, "invalid sampling rate: %d\n", params_rate(params));
0369             return -EINVAL;
0370         }
0371 
0372         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL0, AD193X_DAC_SR_MASK, dacc0);
0373     }
0374 
0375     regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
0376                 AD193X_PLL_INPUT_MASK, master_rate);
0377 
0378     regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
0379                 AD193X_DAC_WORD_LEN_MASK,
0380                 word_len << AD193X_DAC_WORD_LEN_SHFT);
0381 
0382     if (ad193x_has_adc(ad193x))
0383         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
0384                    AD193X_ADC_WORD_LEN_MASK, word_len);
0385 
0386     return 0;
0387 }
0388 
0389 static int ad193x_startup(struct snd_pcm_substream *substream,
0390               struct snd_soc_dai *dai)
0391 {
0392     return snd_pcm_hw_constraint_list(substream->runtime, 0,
0393                    SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
0394                    &constr);
0395 }
0396 
0397 static const struct snd_soc_dai_ops ad193x_dai_ops = {
0398     .startup = ad193x_startup,
0399     .hw_params = ad193x_hw_params,
0400     .mute_stream = ad193x_mute,
0401     .set_tdm_slot = ad193x_set_tdm_slot,
0402     .set_sysclk = ad193x_set_dai_sysclk,
0403     .set_fmt = ad193x_set_dai_fmt,
0404     .no_capture_mute = 1,
0405 };
0406 
0407 /* codec DAI instance */
0408 static struct snd_soc_dai_driver ad193x_dai = {
0409     .name = "ad193x-hifi",
0410     .playback = {
0411         .stream_name = "Playback",
0412         .channels_min = 2,
0413         .channels_max = 8,
0414         .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
0415         .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
0416             SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
0417     },
0418     .capture = {
0419         .stream_name = "Capture",
0420         .channels_min = 2,
0421         .channels_max = 4,
0422         .rates = SNDRV_PCM_RATE_48000,
0423         .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
0424             SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
0425     },
0426     .ops = &ad193x_dai_ops,
0427 };
0428 
0429 /* codec DAI instance for DAC only */
0430 static struct snd_soc_dai_driver ad193x_no_adc_dai = {
0431     .name = "ad193x-hifi",
0432     .playback = {
0433         .stream_name = "Playback",
0434         .channels_min = 2,
0435         .channels_max = 8,
0436         .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
0437         .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
0438             SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
0439     },
0440     .ops = &ad193x_dai_ops,
0441 };
0442 
0443 /* codec register values to set after reset */
0444 static void ad193x_reg_default_init(struct ad193x_priv *ad193x)
0445 {
0446     static const struct reg_sequence reg_init[] = {
0447         {  0, 0x99 },   /* PLL_CLK_CTRL0: pll input: mclki/xi 12.288Mhz */
0448         {  1, 0x04 },   /* PLL_CLK_CTRL1: no on-chip Vref */
0449         {  2, 0x40 },   /* DAC_CTRL0: TDM mode */
0450         {  3, 0x00 },   /* DAC_CTRL1: reset */
0451         {  4, 0x1A },   /* DAC_CTRL2: 48kHz de-emphasis, unmute dac */
0452         {  5, 0x00 },   /* DAC_CHNL_MUTE: unmute DAC channels */
0453         {  6, 0x00 },   /* DAC_L1_VOL: no attenuation */
0454         {  7, 0x00 },   /* DAC_R1_VOL: no attenuation */
0455         {  8, 0x00 },   /* DAC_L2_VOL: no attenuation */
0456         {  9, 0x00 },   /* DAC_R2_VOL: no attenuation */
0457         { 10, 0x00 },   /* DAC_L3_VOL: no attenuation */
0458         { 11, 0x00 },   /* DAC_R3_VOL: no attenuation */
0459         { 12, 0x00 },   /* DAC_L4_VOL: no attenuation */
0460         { 13, 0x00 },   /* DAC_R4_VOL: no attenuation */
0461     };
0462     static const struct reg_sequence reg_adc_init[] = {
0463         { 14, 0x03 },   /* ADC_CTRL0: high-pass filter enable */
0464         { 15, 0x43 },   /* ADC_CTRL1: sata delay=1, adc aux mode */
0465         { 16, 0x00 },   /* ADC_CTRL2: reset */
0466     };
0467 
0468     regmap_multi_reg_write(ad193x->regmap, reg_init, ARRAY_SIZE(reg_init));
0469 
0470     if (ad193x_has_adc(ad193x)) {
0471         regmap_multi_reg_write(ad193x->regmap, reg_adc_init,
0472                        ARRAY_SIZE(reg_adc_init));
0473     }
0474 }
0475 
0476 static int ad193x_component_probe(struct snd_soc_component *component)
0477 {
0478     struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
0479     struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
0480     int num, ret;
0481 
0482     /* default setting for ad193x */
0483     ad193x_reg_default_init(ad193x);
0484 
0485     /* adc only */
0486     if (ad193x_has_adc(ad193x)) {
0487         /* add adc controls */
0488         num = ARRAY_SIZE(ad193x_adc_snd_controls);
0489         ret = snd_soc_add_component_controls(component,
0490                          ad193x_adc_snd_controls,
0491                          num);
0492         if (ret)
0493             return ret;
0494 
0495         /* add adc widgets */
0496         num = ARRAY_SIZE(ad193x_adc_widgets);
0497         ret = snd_soc_dapm_new_controls(dapm,
0498                         ad193x_adc_widgets,
0499                         num);
0500         if (ret)
0501             return ret;
0502 
0503         /* add adc routes */
0504         num = ARRAY_SIZE(ad193x_adc_audio_paths);
0505         ret = snd_soc_dapm_add_routes(dapm,
0506                           ad193x_adc_audio_paths,
0507                           num);
0508         if (ret)
0509             return ret;
0510     }
0511 
0512     return 0;
0513 }
0514 
0515 static const struct snd_soc_component_driver soc_component_dev_ad193x = {
0516     .probe          = ad193x_component_probe,
0517     .controls       = ad193x_snd_controls,
0518     .num_controls       = ARRAY_SIZE(ad193x_snd_controls),
0519     .dapm_widgets       = ad193x_dapm_widgets,
0520     .num_dapm_widgets   = ARRAY_SIZE(ad193x_dapm_widgets),
0521     .dapm_routes        = audio_paths,
0522     .num_dapm_routes    = ARRAY_SIZE(audio_paths),
0523     .idle_bias_on       = 1,
0524     .use_pmdown_time    = 1,
0525     .endianness     = 1,
0526 };
0527 
0528 const struct regmap_config ad193x_regmap_config = {
0529     .max_register = AD193X_NUM_REGS - 1,
0530 };
0531 EXPORT_SYMBOL_GPL(ad193x_regmap_config);
0532 
0533 int ad193x_probe(struct device *dev, struct regmap *regmap,
0534          enum ad193x_type type)
0535 {
0536     struct ad193x_priv *ad193x;
0537 
0538     if (IS_ERR(regmap))
0539         return PTR_ERR(regmap);
0540 
0541     ad193x = devm_kzalloc(dev, sizeof(*ad193x), GFP_KERNEL);
0542     if (ad193x == NULL)
0543         return -ENOMEM;
0544 
0545     ad193x->regmap = regmap;
0546     ad193x->type = type;
0547 
0548     dev_set_drvdata(dev, ad193x);
0549 
0550     if (ad193x_has_adc(ad193x))
0551         return devm_snd_soc_register_component(dev, &soc_component_dev_ad193x,
0552                                &ad193x_dai, 1);
0553     return devm_snd_soc_register_component(dev, &soc_component_dev_ad193x,
0554         &ad193x_no_adc_dai, 1);
0555 }
0556 EXPORT_SYMBOL_GPL(ad193x_probe);
0557 
0558 MODULE_DESCRIPTION("ASoC ad193x driver");
0559 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
0560 MODULE_LICENSE("GPL");
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