sound/soc/codecs/ad193x.c

   1 /*
   2  * AD193X Audio Codec driver supporting AD1936/7/8/9
   3  *
   4  * Copyright 2010 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #include <linux/module.h>
  10 #include <linux/kernel.h>
  11 #include <linux/device.h>
  12 #include <linux/regmap.h>
  13 #include <linux/slab.h>
  14 #include <sound/core.h>
  15 #include <sound/pcm.h>
  16 #include <sound/pcm_params.h>
  17 #include <sound/initval.h>
  18 #include <sound/soc.h>
  19 #include <sound/tlv.h>
  20
  21 #include "ad193x.h"
  22
  23 /* codec private data */
  24 struct ad193x_priv {
  25         struct regmap *regmap;
  26         enum ad193x_type type;
  27         int sysclk;
  28 };
  29
  30 /*
  31  * AD193X volume/mute/de-emphasis etc. controls
  32  */
  33 static const char * const ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
  34
  35 static SOC_ENUM_SINGLE_DECL(ad193x_deemp_enum, AD193X_DAC_CTRL2, 1,
  36                             ad193x_deemp);
  37
  38 static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
  39
  40 static const struct snd_kcontrol_new ad193x_snd_controls[] = {
  41         /* DAC volume control */
  42         SOC_DOUBLE_R_TLV("DAC1 Volume", AD193X_DAC_L1_VOL,
  43                         AD193X_DAC_R1_VOL, 0, 0xFF, 1, adau193x_tlv),
  44         SOC_DOUBLE_R_TLV("DAC2 Volume", AD193X_DAC_L2_VOL,
  45                         AD193X_DAC_R2_VOL, 0, 0xFF, 1, adau193x_tlv),
  46         SOC_DOUBLE_R_TLV("DAC3 Volume", AD193X_DAC_L3_VOL,
  47                         AD193X_DAC_R3_VOL, 0, 0xFF, 1, adau193x_tlv),
  48         SOC_DOUBLE_R_TLV("DAC4 Volume", AD193X_DAC_L4_VOL,
  49                         AD193X_DAC_R4_VOL, 0, 0xFF, 1, adau193x_tlv),
  50
  51         /* DAC switch control */
  52         SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
  53                 AD193X_DACR1_MUTE, 1, 1),
  54         SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
  55                 AD193X_DACR2_MUTE, 1, 1),
  56         SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
  57                 AD193X_DACR3_MUTE, 1, 1),
  58         SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
  59                 AD193X_DACR4_MUTE, 1, 1),
  60
  61         /* DAC de-emphasis */
  62         SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
  63 };
  64
  65 static const struct snd_kcontrol_new ad193x_adc_snd_controls[] = {
  66         /* ADC switch control */
  67         SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
  68                 AD193X_ADCR1_MUTE, 1, 1),
  69         SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
  70                 AD193X_ADCR2_MUTE, 1, 1),
  71
  72         /* ADC high-pass filter */
  73         SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
  74                         AD193X_ADC_HIGHPASS_FILTER, 1, 0),
  75 };
  76
  77 static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
  78         SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
  79         SND_SOC_DAPM_PGA("DAC Output", AD193X_DAC_CTRL0, 0, 1, NULL, 0),
  80         SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
  81         SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0),
  82         SND_SOC_DAPM_VMID("VMID"),
  83         SND_SOC_DAPM_OUTPUT("DAC1OUT"),
  84         SND_SOC_DAPM_OUTPUT("DAC2OUT"),
  85         SND_SOC_DAPM_OUTPUT("DAC3OUT"),
  86         SND_SOC_DAPM_OUTPUT("DAC4OUT"),
  87 };
  88
  89 static const struct snd_soc_dapm_widget ad193x_adc_widgets[] = {
  90         SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
  91         SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
  92         SND_SOC_DAPM_INPUT("ADC1IN"),
  93         SND_SOC_DAPM_INPUT("ADC2IN"),
  94 };
  95
  96 static const struct snd_soc_dapm_route audio_paths[] = {
  97         { "DAC", NULL, "SYSCLK" },
  98         { "DAC Output", NULL, "DAC" },
  99         { "DAC Output", NULL, "VMID" },
 100         { "DAC1OUT", NULL, "DAC Output" },
 101         { "DAC2OUT", NULL, "DAC Output" },
 102         { "DAC3OUT", NULL, "DAC Output" },
 103         { "DAC4OUT", NULL, "DAC Output" },
 104         { "SYSCLK", NULL, "PLL_PWR" },
 105 };
 106
 107 static const struct snd_soc_dapm_route ad193x_adc_audio_paths[] = {
 108         { "ADC", NULL, "SYSCLK" },
 109         { "ADC", NULL, "ADC_PWR" },
 110         { "ADC", NULL, "ADC1IN" },
 111         { "ADC", NULL, "ADC2IN" },
 112 };
 113
 114 static inline bool ad193x_has_adc(const struct ad193x_priv *ad193x)
 115 {
 116         switch (ad193x->type) {
 117         case AD1933:
 118         case AD1934:
 119                 return false;
 120         default:
 121                 break;
 122         }
 123
 124         return true;
 125 }
 126
 127 /*
 128  * DAI ops entries
 129  */
 130
 131 static int ad193x_mute(struct snd_soc_dai *dai, int mute)
 132 {
 133         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
 134
 135         if (mute)
 136                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 137                                     AD193X_DAC_MASTER_MUTE,
 138                                     AD193X_DAC_MASTER_MUTE);
 139         else
 140                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 141                                     AD193X_DAC_MASTER_MUTE, 0);
 142
 143         return 0;
 144 }
 145
 146 static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
 147                                unsigned int rx_mask, int slots, int width)
 148 {
 149         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
 150         unsigned int channels;
 151
 152         switch (slots) {
 153         case 2:
 154                 channels = AD193X_2_CHANNELS;
 155                 break;
 156         case 4:
 157                 channels = AD193X_4_CHANNELS;
 158                 break;
 159         case 8:
 160                 channels = AD193X_8_CHANNELS;
 161                 break;
 162         case 16:
 163                 channels = AD193X_16_CHANNELS;
 164                 break;
 165         default:
 166                 return -EINVAL;
 167         }
 168
 169         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
 170                 AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT);
 171         if (ad193x_has_adc(ad193x))
 172                 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
 173                                    AD193X_ADC_CHAN_MASK,
 174                                    channels << AD193X_ADC_CHAN_SHFT);
 175
 176         return 0;
 177 }
 178
 179 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
 180                 unsigned int fmt)
 181 {
 182         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec_dai->codec);
 183         unsigned int adc_serfmt = 0;
 184         unsigned int adc_fmt = 0;
 185         unsigned int dac_fmt = 0;
 186
 187         /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
 188          * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
 189          */
 190         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 191         case SND_SOC_DAIFMT_I2S:
 192                 adc_serfmt |= AD193X_ADC_SERFMT_TDM;
 193                 break;
 194         case SND_SOC_DAIFMT_DSP_A:
 195                 adc_serfmt |= AD193X_ADC_SERFMT_AUX;
 196                 break;
 197         default:
 198                 if (ad193x_has_adc(ad193x))
 199                         return -EINVAL;
 200                 break;
 201         }
 202
 203         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 204         case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
 205                 break;
 206         case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
 207                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
 208                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
 209                 break;
 210         case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
 211                 adc_fmt |= AD193X_ADC_BCLK_INV;
 212                 dac_fmt |= AD193X_DAC_BCLK_INV;
 213                 break;
 214         case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
 215                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
 216                 adc_fmt |= AD193X_ADC_BCLK_INV;
 217                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
 218                 dac_fmt |= AD193X_DAC_BCLK_INV;
 219                 break;
 220         default:
 221                 return -EINVAL;
 222         }
 223
 224         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 225         case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
 226                 adc_fmt |= AD193X_ADC_LCR_MASTER;
 227                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
 228                 dac_fmt |= AD193X_DAC_LCR_MASTER;
 229                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
 230                 break;
 231         case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
 232                 adc_fmt |= AD193X_ADC_LCR_MASTER;
 233                 dac_fmt |= AD193X_DAC_LCR_MASTER;
 234                 break;
 235         case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
 236                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
 237                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
 238                 break;
 239         case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
 240                 break;
 241         default:
 242                 return -EINVAL;
 243         }
 244
 245         if (ad193x_has_adc(ad193x)) {
 246                 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
 247                                    AD193X_ADC_SERFMT_MASK, adc_serfmt);
 248                 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
 249                                    AD193X_ADC_FMT_MASK, adc_fmt);
 250         }
 251         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
 252                 AD193X_DAC_FMT_MASK, dac_fmt);
 253
 254         return 0;
 255 }
 256
 257 static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 258                 int clk_id, unsigned int freq, int dir)
 259 {
 260         struct snd_soc_codec *codec = codec_dai->codec;
 261         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 262         switch (freq) {
 263         case 12288000:
 264         case 18432000:
 265         case 24576000:
 266         case 36864000:
 267                 ad193x->sysclk = freq;
 268                 return 0;
 269         }
 270         return -EINVAL;
 271 }
 272
 273 static int ad193x_hw_params(struct snd_pcm_substream *substream,
 274                 struct snd_pcm_hw_params *params,
 275                 struct snd_soc_dai *dai)
 276 {
 277         int word_len = 0, master_rate = 0;
 278         struct snd_soc_codec *codec = dai->codec;
 279         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 280
 281         /* bit size */
 282         switch (params_width(params)) {
 283         case 16:
 284                 word_len = 3;
 285                 break;
 286         case 20:
 287                 word_len = 1;
 288                 break;
 289         case 24:
 290         case 32:
 291                 word_len = 0;
 292                 break;
 293         }
 294
 295         switch (ad193x->sysclk) {
 296         case 12288000:
 297                 master_rate = AD193X_PLL_INPUT_256;
 298                 break;
 299         case 18432000:
 300                 master_rate = AD193X_PLL_INPUT_384;
 301                 break;
 302         case 24576000:
 303                 master_rate = AD193X_PLL_INPUT_512;
 304                 break;
 305         case 36864000:
 306                 master_rate = AD193X_PLL_INPUT_768;
 307                 break;
 308         }
 309
 310         regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
 311                             AD193X_PLL_INPUT_MASK, master_rate);
 312
 313         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 314                             AD193X_DAC_WORD_LEN_MASK,
 315                             word_len << AD193X_DAC_WORD_LEN_SHFT);
 316
 317         if (ad193x_has_adc(ad193x))
 318                 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
 319                                    AD193X_ADC_WORD_LEN_MASK, word_len);
 320
 321         return 0;
 322 }
 323
 324 static const struct snd_soc_dai_ops ad193x_dai_ops = {
 325         .hw_params = ad193x_hw_params,
 326         .digital_mute = ad193x_mute,
 327         .set_tdm_slot = ad193x_set_tdm_slot,
 328         .set_sysclk     = ad193x_set_dai_sysclk,
 329         .set_fmt = ad193x_set_dai_fmt,
 330 };
 331
 332 /* codec DAI instance */
 333 static struct snd_soc_dai_driver ad193x_dai = {
 334         .name = "ad193x-hifi",
 335         .playback = {
 336                 .stream_name = "Playback",
 337                 .channels_min = 2,
 338                 .channels_max = 8,
 339                 .rates = SNDRV_PCM_RATE_48000,
 340                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 341                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 342         },
 343         .capture = {
 344                 .stream_name = "Capture",
 345                 .channels_min = 2,
 346                 .channels_max = 4,
 347                 .rates = SNDRV_PCM_RATE_48000,
 348                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 349                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 350         },
 351         .ops = &ad193x_dai_ops,
 352 };
 353
 354 static int ad193x_codec_probe(struct snd_soc_codec *codec)
 355 {
 356         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 357         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
 358         int num, ret;
 359
 360         /* default setting for ad193x */
 361
 362         /* unmute dac channels */
 363         regmap_write(ad193x->regmap, AD193X_DAC_CHNL_MUTE, 0x0);
 364         /* de-emphasis: 48kHz, powedown dac */
 365         regmap_write(ad193x->regmap, AD193X_DAC_CTRL2, 0x1A);
 366         /* dac in tdm mode */
 367         regmap_write(ad193x->regmap, AD193X_DAC_CTRL0, 0x40);
 368
 369         /* adc only */
 370         if (ad193x_has_adc(ad193x)) {
 371                 /* high-pass filter enable */
 372                 regmap_write(ad193x->regmap, AD193X_ADC_CTRL0, 0x3);
 373                 /* sata delay=1, adc aux mode */
 374                 regmap_write(ad193x->regmap, AD193X_ADC_CTRL1, 0x43);
 375         }
 376
 377         /* pll input: mclki/xi */
 378         regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
 379         regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL1, 0x04);
 380
 381         /* adc only */
 382         if (ad193x_has_adc(ad193x)) {
 383                 /* add adc controls */
 384                 num = ARRAY_SIZE(ad193x_adc_snd_controls);
 385                 ret = snd_soc_add_codec_controls(codec,
 386                                                  ad193x_adc_snd_controls,
 387                                                  num);
 388                 if (ret)
 389                         return ret;
 390
 391                 /* add adc widgets */
 392                 num = ARRAY_SIZE(ad193x_adc_widgets);
 393                 ret = snd_soc_dapm_new_controls(dapm,
 394                                                 ad193x_adc_widgets,
 395                                                 num);
 396                 if (ret)
 397                         return ret;
 398
 399                 /* add adc routes */
 400                 num = ARRAY_SIZE(ad193x_adc_audio_paths);
 401                 ret = snd_soc_dapm_add_routes(dapm,
 402                                               ad193x_adc_audio_paths,
 403                                               num);
 404                 if (ret)
 405                         return ret;
 406         }
 407
 408         return 0;
 409 }
 410
 411 static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
 412         .probe = ad193x_codec_probe,
 413         .controls = ad193x_snd_controls,
 414         .num_controls = ARRAY_SIZE(ad193x_snd_controls),
 415         .dapm_widgets = ad193x_dapm_widgets,
 416         .num_dapm_widgets = ARRAY_SIZE(ad193x_dapm_widgets),
 417         .dapm_routes = audio_paths,
 418         .num_dapm_routes = ARRAY_SIZE(audio_paths),
 419 };
 420
 421 const struct regmap_config ad193x_regmap_config = {
 422         .max_register = AD193X_NUM_REGS - 1,
 423 };
 424 EXPORT_SYMBOL_GPL(ad193x_regmap_config);
 425
 426 int ad193x_probe(struct device *dev, struct regmap *regmap,
 427                  enum ad193x_type type)
 428 {
 429         struct ad193x_priv *ad193x;
 430
 431         if (IS_ERR(regmap))
 432                 return PTR_ERR(regmap);
 433
 434         ad193x = devm_kzalloc(dev, sizeof(*ad193x), GFP_KERNEL);
 435         if (ad193x == NULL)
 436                 return -ENOMEM;
 437
 438         ad193x->regmap = regmap;
 439         ad193x->type = type;
 440
 441         dev_set_drvdata(dev, ad193x);
 442
 443         return snd_soc_register_codec(dev, &soc_codec_dev_ad193x,
 444                 &ad193x_dai, 1);
 445 }
 446 EXPORT_SYMBOL_GPL(ad193x_probe);
 447
 448 MODULE_DESCRIPTION("ASoC ad193x driver");
 449 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 450 MODULE_LICENSE("GPL");