sound/soc/codecs/ad193x.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * AD193X Audio Codec driver supporting AD1936/7/8/9
   4  *
   5  * Copyright 2010 Analog Devices Inc.
   6  */
   7
   8 #include <linux/module.h>
   9 #include <linux/kernel.h>
  10 #include <linux/device.h>
  11 #include <linux/regmap.h>
  12 #include <linux/slab.h>
  13 #include <sound/core.h>
  14 #include <sound/pcm.h>
  15 #include <sound/pcm_params.h>
  16 #include <sound/initval.h>
  17 #include <sound/soc.h>
  18 #include <sound/tlv.h>
  19
  20 #include "ad193x.h"
  21
  22 /* codec private data */
  23 struct ad193x_priv {
  24         struct regmap *regmap;
  25         enum ad193x_type type;
  26         int sysclk;
  27 };
  28
  29 /*
  30  * AD193X volume/mute/de-emphasis etc. controls
  31  */
  32 static const char * const ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
  33
  34 static SOC_ENUM_SINGLE_DECL(ad193x_deemp_enum, AD193X_DAC_CTRL2, 1,
  35                             ad193x_deemp);
  36
  37 static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
  38
  39 static const unsigned int ad193x_sb[] = {32};
  40
  41 static struct snd_pcm_hw_constraint_list constr = {
  42         .list = ad193x_sb,
  43         .count = ARRAY_SIZE(ad193x_sb),
  44 };
  45
  46 static const struct snd_kcontrol_new ad193x_snd_controls[] = {
  47         /* DAC volume control */
  48         SOC_DOUBLE_R_TLV("DAC1 Volume", AD193X_DAC_L1_VOL,
  49                         AD193X_DAC_R1_VOL, 0, 0xFF, 1, adau193x_tlv),
  50         SOC_DOUBLE_R_TLV("DAC2 Volume", AD193X_DAC_L2_VOL,
  51                         AD193X_DAC_R2_VOL, 0, 0xFF, 1, adau193x_tlv),
  52         SOC_DOUBLE_R_TLV("DAC3 Volume", AD193X_DAC_L3_VOL,
  53                         AD193X_DAC_R3_VOL, 0, 0xFF, 1, adau193x_tlv),
  54         SOC_DOUBLE_R_TLV("DAC4 Volume", AD193X_DAC_L4_VOL,
  55                         AD193X_DAC_R4_VOL, 0, 0xFF, 1, adau193x_tlv),
  56
  57         /* DAC switch control */
  58         SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
  59                 AD193X_DACR1_MUTE, 1, 1),
  60         SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
  61                 AD193X_DACR2_MUTE, 1, 1),
  62         SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
  63                 AD193X_DACR3_MUTE, 1, 1),
  64         SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
  65                 AD193X_DACR4_MUTE, 1, 1),
  66
  67         /* DAC de-emphasis */
  68         SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
  69 };
  70
  71 static const struct snd_kcontrol_new ad193x_adc_snd_controls[] = {
  72         /* ADC switch control */
  73         SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
  74                 AD193X_ADCR1_MUTE, 1, 1),
  75         SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
  76                 AD193X_ADCR2_MUTE, 1, 1),
  77
  78         /* ADC high-pass filter */
  79         SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
  80                         AD193X_ADC_HIGHPASS_FILTER, 1, 0),
  81 };
  82
  83 static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
  84         SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
  85         SND_SOC_DAPM_PGA("DAC Output", AD193X_DAC_CTRL0, 0, 1, NULL, 0),
  86         SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
  87         SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0),
  88         SND_SOC_DAPM_VMID("VMID"),
  89         SND_SOC_DAPM_OUTPUT("DAC1OUT"),
  90         SND_SOC_DAPM_OUTPUT("DAC2OUT"),
  91         SND_SOC_DAPM_OUTPUT("DAC3OUT"),
  92         SND_SOC_DAPM_OUTPUT("DAC4OUT"),
  93 };
  94
  95 static const struct snd_soc_dapm_widget ad193x_adc_widgets[] = {
  96         SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
  97         SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
  98         SND_SOC_DAPM_INPUT("ADC1IN"),
  99         SND_SOC_DAPM_INPUT("ADC2IN"),
 100 };
 101
 102 static int ad193x_check_pll(struct snd_soc_dapm_widget *source,
 103                             struct snd_soc_dapm_widget *sink)
 104 {
 105         struct snd_soc_component *component = snd_soc_dapm_to_component(source->dapm);
 106         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
 107
 108         return !!ad193x->sysclk;
 109 }
 110
 111 static const struct snd_soc_dapm_route audio_paths[] = {
 112         { "DAC", NULL, "SYSCLK" },
 113         { "DAC Output", NULL, "DAC" },
 114         { "DAC Output", NULL, "VMID" },
 115         { "DAC1OUT", NULL, "DAC Output" },
 116         { "DAC2OUT", NULL, "DAC Output" },
 117         { "DAC3OUT", NULL, "DAC Output" },
 118         { "DAC4OUT", NULL, "DAC Output" },
 119         { "SYSCLK", NULL, "PLL_PWR", &ad193x_check_pll },
 120 };
 121
 122 static const struct snd_soc_dapm_route ad193x_adc_audio_paths[] = {
 123         { "ADC", NULL, "SYSCLK" },
 124         { "ADC", NULL, "ADC_PWR" },
 125         { "ADC", NULL, "ADC1IN" },
 126         { "ADC", NULL, "ADC2IN" },
 127 };
 128
 129 static inline bool ad193x_has_adc(const struct ad193x_priv *ad193x)
 130 {
 131         switch (ad193x->type) {
 132         case AD1933:
 133         case AD1934:
 134                 return false;
 135         default:
 136                 break;
 137         }
 138
 139         return true;
 140 }
 141
 142 /*
 143  * DAI ops entries
 144  */
 145
 146 static int ad193x_mute(struct snd_soc_dai *dai, int mute, int direction)
 147 {
 148         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(dai->component);
 149
 150         if (mute)
 151                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 152                                     AD193X_DAC_MASTER_MUTE,
 153                                     AD193X_DAC_MASTER_MUTE);
 154         else
 155                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 156                                     AD193X_DAC_MASTER_MUTE, 0);
 157
 158         return 0;
 159 }
 160
 161 static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
 162                                unsigned int rx_mask, int slots, int width)
 163 {
 164         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(dai->component);
 165         unsigned int channels;
 166
 167         switch (slots) {
 168         case 2:
 169                 channels = AD193X_2_CHANNELS;
 170                 break;
 171         case 4:
 172                 channels = AD193X_4_CHANNELS;
 173                 break;
 174         case 8:
 175                 channels = AD193X_8_CHANNELS;
 176                 break;
 177         case 16:
 178                 channels = AD193X_16_CHANNELS;
 179                 break;
 180         default:
 181                 return -EINVAL;
 182         }
 183
 184         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
 185                 AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT);
 186         if (ad193x_has_adc(ad193x))
 187                 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
 188                                    AD193X_ADC_CHAN_MASK,
 189                                    channels << AD193X_ADC_CHAN_SHFT);
 190
 191         return 0;
 192 }
 193
 194 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
 195                 unsigned int fmt)
 196 {
 197         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(codec_dai->component);
 198         unsigned int adc_serfmt = 0;
 199         unsigned int dac_serfmt = 0;
 200         unsigned int adc_fmt = 0;
 201         unsigned int dac_fmt = 0;
 202
 203         /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
 204          * with TDM), ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A) and DAC I2S mode
 205          * (SND_SOC_DAIFMT_I2S)
 206          */
 207         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 208         case SND_SOC_DAIFMT_I2S:
 209                 adc_serfmt |= AD193X_ADC_SERFMT_TDM;
 210                 dac_serfmt |= AD193X_DAC_SERFMT_STEREO;
 211                 break;
 212         case SND_SOC_DAIFMT_DSP_A:
 213                 adc_serfmt |= AD193X_ADC_SERFMT_AUX;
 214                 dac_serfmt |= AD193X_DAC_SERFMT_TDM;
 215                 break;
 216         default:
 217                 if (ad193x_has_adc(ad193x))
 218                         return -EINVAL;
 219         }
 220
 221         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 222         case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
 223                 break;
 224         case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
 225                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
 226                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
 227                 break;
 228         case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
 229                 adc_fmt |= AD193X_ADC_BCLK_INV;
 230                 dac_fmt |= AD193X_DAC_BCLK_INV;
 231                 break;
 232         case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
 233                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
 234                 adc_fmt |= AD193X_ADC_BCLK_INV;
 235                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
 236                 dac_fmt |= AD193X_DAC_BCLK_INV;
 237                 break;
 238         default:
 239                 return -EINVAL;
 240         }
 241
 242         /* For DSP_*, LRCLK's polarity must be inverted */
 243         if (fmt & SND_SOC_DAIFMT_DSP_A)
 244                 dac_fmt ^= AD193X_DAC_LEFT_HIGH;
 245
 246         switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
 247         case SND_SOC_DAIFMT_CBP_CFP:
 248                 adc_fmt |= AD193X_ADC_LCR_MASTER;
 249                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
 250                 dac_fmt |= AD193X_DAC_LCR_MASTER;
 251                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
 252                 break;
 253         case SND_SOC_DAIFMT_CBC_CFP:
 254                 adc_fmt |= AD193X_ADC_LCR_MASTER;
 255                 dac_fmt |= AD193X_DAC_LCR_MASTER;
 256                 break;
 257         case SND_SOC_DAIFMT_CBP_CFC:
 258                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
 259                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
 260                 break;
 261         case SND_SOC_DAIFMT_CBC_CFC:
 262                 break;
 263         default:
 264                 return -EINVAL;
 265         }
 266
 267         if (ad193x_has_adc(ad193x)) {
 268                 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
 269                                    AD193X_ADC_SERFMT_MASK, adc_serfmt);
 270                 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
 271                                    AD193X_ADC_FMT_MASK, adc_fmt);
 272         }
 273         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL0,
 274                            AD193X_DAC_SERFMT_MASK, dac_serfmt);
 275         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
 276                 AD193X_DAC_FMT_MASK, dac_fmt);
 277
 278         return 0;
 279 }
 280
 281 static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 282                 int clk_id, unsigned int freq, int dir)
 283 {
 284         struct snd_soc_component *component = codec_dai->component;
 285         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
 286         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
 287
 288         if (clk_id == AD193X_SYSCLK_MCLK) {
 289                 /* MCLK must be 512 x fs */
 290                 if (dir == SND_SOC_CLOCK_OUT || freq != 24576000)
 291                         return -EINVAL;
 292
 293                 regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL1,
 294                                    AD193X_PLL_SRC_MASK,
 295                                    AD193X_PLL_DAC_SRC_MCLK |
 296                                    AD193X_PLL_CLK_SRC_MCLK);
 297
 298                 snd_soc_dapm_sync(dapm);
 299                 return 0;
 300         }
 301         switch (freq) {
 302         case 12288000:
 303         case 18432000:
 304         case 24576000:
 305         case 36864000:
 306                 ad193x->sysclk = freq;
 307                 return 0;
 308         }
 309         return -EINVAL;
 310 }
 311
 312 static int ad193x_hw_params(struct snd_pcm_substream *substream,
 313                 struct snd_pcm_hw_params *params,
 314                 struct snd_soc_dai *dai)
 315 {
 316         int word_len = 0, master_rate = 0;
 317         struct snd_soc_component *component = dai->component;
 318         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
 319         bool is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 320         u8 dacc0;
 321
 322         dev_dbg(dai->dev, "%s() rate=%u format=%#x width=%u channels=%u\n",
 323                 __func__, params_rate(params), params_format(params),
 324                 params_width(params), params_channels(params));
 325
 326
 327         /* bit size */
 328         switch (params_width(params)) {
 329         case 16:
 330                 word_len = 3;
 331                 break;
 332         case 20:
 333                 word_len = 1;
 334                 break;
 335         case 24:
 336         case 32:
 337                 word_len = 0;
 338                 break;
 339         }
 340
 341         switch (ad193x->sysclk) {
 342         case 12288000:
 343                 master_rate = AD193X_PLL_INPUT_256;
 344                 break;
 345         case 18432000:
 346                 master_rate = AD193X_PLL_INPUT_384;
 347                 break;
 348         case 24576000:
 349                 master_rate = AD193X_PLL_INPUT_512;
 350                 break;
 351         case 36864000:
 352                 master_rate = AD193X_PLL_INPUT_768;
 353                 break;
 354         }
 355
 356         if (is_playback) {
 357                 switch (params_rate(params)) {
 358                 case 48000:
 359                         dacc0 = AD193X_DAC_SR_48;
 360                         break;
 361                 case 96000:
 362                         dacc0 = AD193X_DAC_SR_96;
 363                         break;
 364                 case 192000:
 365                         dacc0 = AD193X_DAC_SR_192;
 366                         break;
 367                 default:
 368                         dev_err(dai->dev, "invalid sampling rate: %d\n", params_rate(params));
 369                         return -EINVAL;
 370                 }
 371
 372                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL0, AD193X_DAC_SR_MASK, dacc0);
 373         }
 374
 375         regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
 376                             AD193X_PLL_INPUT_MASK, master_rate);
 377
 378         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 379                             AD193X_DAC_WORD_LEN_MASK,
 380                             word_len << AD193X_DAC_WORD_LEN_SHFT);
 381
 382         if (ad193x_has_adc(ad193x))
 383                 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
 384                                    AD193X_ADC_WORD_LEN_MASK, word_len);
 385
 386         return 0;
 387 }
 388
 389 static int ad193x_startup(struct snd_pcm_substream *substream,
 390                           struct snd_soc_dai *dai)
 391 {
 392         return snd_pcm_hw_constraint_list(substream->runtime, 0,
 393                                    SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
 394                                    &constr);
 395 }
 396
 397 static const struct snd_soc_dai_ops ad193x_dai_ops = {
 398         .startup = ad193x_startup,
 399         .hw_params = ad193x_hw_params,
 400         .mute_stream = ad193x_mute,
 401         .set_tdm_slot = ad193x_set_tdm_slot,
 402         .set_sysclk     = ad193x_set_dai_sysclk,
 403         .set_fmt = ad193x_set_dai_fmt,
 404         .no_capture_mute = 1,
 405 };
 406
 407 /* codec DAI instance */
 408 static struct snd_soc_dai_driver ad193x_dai = {
 409         .name = "ad193x-hifi",
 410         .playback = {
 411                 .stream_name = "Playback",
 412                 .channels_min = 2,
 413                 .channels_max = 8,
 414                 .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
 415                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 416                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 417         },
 418         .capture = {
 419                 .stream_name = "Capture",
 420                 .channels_min = 2,
 421                 .channels_max = 4,
 422                 .rates = SNDRV_PCM_RATE_48000,
 423                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 424                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 425         },
 426         .ops = &ad193x_dai_ops,
 427 };
 428
 429 /* codec DAI instance for DAC only */
 430 static struct snd_soc_dai_driver ad193x_no_adc_dai = {
 431         .name = "ad193x-hifi",
 432         .playback = {
 433                 .stream_name = "Playback",
 434                 .channels_min = 2,
 435                 .channels_max = 8,
 436                 .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
 437                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 438                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 439         },
 440         .ops = &ad193x_dai_ops,
 441 };
 442
 443 /* codec register values to set after reset */
 444 static void ad193x_reg_default_init(struct ad193x_priv *ad193x)
 445 {
 446         static const struct reg_sequence reg_init[] = {
 447                 {  0, 0x99 },   /* PLL_CLK_CTRL0: pll input: mclki/xi 12.288Mhz */
 448                 {  1, 0x04 },   /* PLL_CLK_CTRL1: no on-chip Vref */
 449                 {  2, 0x40 },   /* DAC_CTRL0: TDM mode */
 450                 {  3, 0x00 },   /* DAC_CTRL1: reset */
 451                 {  4, 0x1A },   /* DAC_CTRL2: 48kHz de-emphasis, unmute dac */
 452                 {  5, 0x00 },   /* DAC_CHNL_MUTE: unmute DAC channels */
 453                 {  6, 0x00 },   /* DAC_L1_VOL: no attenuation */
 454                 {  7, 0x00 },   /* DAC_R1_VOL: no attenuation */
 455                 {  8, 0x00 },   /* DAC_L2_VOL: no attenuation */
 456                 {  9, 0x00 },   /* DAC_R2_VOL: no attenuation */
 457                 { 10, 0x00 },   /* DAC_L3_VOL: no attenuation */
 458                 { 11, 0x00 },   /* DAC_R3_VOL: no attenuation */
 459                 { 12, 0x00 },   /* DAC_L4_VOL: no attenuation */
 460                 { 13, 0x00 },   /* DAC_R4_VOL: no attenuation */
 461         };
 462         static const struct reg_sequence reg_adc_init[] = {
 463                 { 14, 0x03 },   /* ADC_CTRL0: high-pass filter enable */
 464                 { 15, 0x43 },   /* ADC_CTRL1: sata delay=1, adc aux mode */
 465                 { 16, 0x00 },   /* ADC_CTRL2: reset */
 466         };
 467
 468         regmap_multi_reg_write(ad193x->regmap, reg_init, ARRAY_SIZE(reg_init));
 469
 470         if (ad193x_has_adc(ad193x)) {
 471                 regmap_multi_reg_write(ad193x->regmap, reg_adc_init,
 472                                        ARRAY_SIZE(reg_adc_init));
 473         }
 474 }
 475
 476 static int ad193x_component_probe(struct snd_soc_component *component)
 477 {
 478         struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
 479         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
 480         int num, ret;
 481
 482         /* default setting for ad193x */
 483         ad193x_reg_default_init(ad193x);
 484
 485         /* adc only */
 486         if (ad193x_has_adc(ad193x)) {
 487                 /* add adc controls */
 488                 num = ARRAY_SIZE(ad193x_adc_snd_controls);
 489                 ret = snd_soc_add_component_controls(component,
 490                                                  ad193x_adc_snd_controls,
 491                                                  num);
 492                 if (ret)
 493                         return ret;
 494
 495                 /* add adc widgets */
 496                 num = ARRAY_SIZE(ad193x_adc_widgets);
 497                 ret = snd_soc_dapm_new_controls(dapm,
 498                                                 ad193x_adc_widgets,
 499                                                 num);
 500                 if (ret)
 501                         return ret;
 502
 503                 /* add adc routes */
 504                 num = ARRAY_SIZE(ad193x_adc_audio_paths);
 505                 ret = snd_soc_dapm_add_routes(dapm,
 506                                               ad193x_adc_audio_paths,
 507                                               num);
 508                 if (ret)
 509                         return ret;
 510         }
 511
 512         return 0;
 513 }
 514
 515 static const struct snd_soc_component_driver soc_component_dev_ad193x = {
 516         .probe                  = ad193x_component_probe,
 517         .controls               = ad193x_snd_controls,
 518         .num_controls           = ARRAY_SIZE(ad193x_snd_controls),
 519         .dapm_widgets           = ad193x_dapm_widgets,
 520         .num_dapm_widgets       = ARRAY_SIZE(ad193x_dapm_widgets),
 521         .dapm_routes            = audio_paths,
 522         .num_dapm_routes        = ARRAY_SIZE(audio_paths),
 523         .idle_bias_on           = 1,
 524         .use_pmdown_time        = 1,
 525         .endianness             = 1,
 526 };
 527
 528 const struct regmap_config ad193x_regmap_config = {
 529         .max_register = AD193X_NUM_REGS - 1,
 530 };
 531 EXPORT_SYMBOL_GPL(ad193x_regmap_config);
 532
 533 int ad193x_probe(struct device *dev, struct regmap *regmap,
 534                  enum ad193x_type type)
 535 {
 536         struct ad193x_priv *ad193x;
 537
 538         if (IS_ERR(regmap))
 539                 return PTR_ERR(regmap);
 540
 541         ad193x = devm_kzalloc(dev, sizeof(*ad193x), GFP_KERNEL);
 542         if (ad193x == NULL)
 543                 return -ENOMEM;
 544
 545         ad193x->regmap = regmap;
 546         ad193x->type = type;
 547
 548         dev_set_drvdata(dev, ad193x);
 549
 550         if (ad193x_has_adc(ad193x))
 551                 return devm_snd_soc_register_component(dev, &soc_component_dev_ad193x,
 552                                                        &ad193x_dai, 1);
 553         return devm_snd_soc_register_component(dev, &soc_component_dev_ad193x,
 554                 &ad193x_no_adc_dai, 1);
 555 }
 556 EXPORT_SYMBOL_GPL(ad193x_probe);
 557
 558 MODULE_DESCRIPTION("ASoC ad193x driver");
 559 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 560 MODULE_LICENSE("GPL");