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/init.h>
  10 #include <linux/module.h>
  11 #include <linux/kernel.h>
  12 #include <linux/device.h>
  13 #include <linux/i2c.h>
  14 #include <linux/spi/spi.h>
  15 #include <linux/slab.h>
  16 #include <sound/core.h>
  17 #include <sound/pcm.h>
  18 #include <sound/pcm_params.h>
  19 #include <sound/initval.h>
  20 #include <sound/soc.h>
  21 #include <sound/tlv.h>
  22 #include "ad193x.h"
  23
  24 /* codec private data */
  25 struct ad193x_priv {
  26         struct regmap *regmap;
  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 const struct soc_enum ad193x_deemp_enum =
  36         SOC_ENUM_SINGLE(AD193X_DAC_CTRL2, 1, 4, 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         /* ADC switch control */
  52         SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
  53                 AD193X_ADCR1_MUTE, 1, 1),
  54         SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
  55                 AD193X_ADCR2_MUTE, 1, 1),
  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         /* ADC high-pass filter */
  68         SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
  69                         AD193X_ADC_HIGHPASS_FILTER, 1, 0),
  70
  71         /* DAC de-emphasis */
  72         SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
  73 };
  74
  75 static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
  76         SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1),
  77         SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
  78         SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
  79         SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
  80         SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0),
  81         SND_SOC_DAPM_OUTPUT("DAC1OUT"),
  82         SND_SOC_DAPM_OUTPUT("DAC2OUT"),
  83         SND_SOC_DAPM_OUTPUT("DAC3OUT"),
  84         SND_SOC_DAPM_OUTPUT("DAC4OUT"),
  85         SND_SOC_DAPM_INPUT("ADC1IN"),
  86         SND_SOC_DAPM_INPUT("ADC2IN"),
  87 };
  88
  89 static const struct snd_soc_dapm_route audio_paths[] = {
  90         { "DAC", NULL, "SYSCLK" },
  91         { "ADC", NULL, "SYSCLK" },
  92         { "DAC", NULL, "ADC_PWR" },
  93         { "ADC", NULL, "ADC_PWR" },
  94         { "DAC1OUT", NULL, "DAC" },
  95         { "DAC2OUT", NULL, "DAC" },
  96         { "DAC3OUT", NULL, "DAC" },
  97         { "DAC4OUT", NULL, "DAC" },
  98         { "ADC", NULL, "ADC1IN" },
  99         { "ADC", NULL, "ADC2IN" },
 100         { "SYSCLK", NULL, "PLL_PWR" },
 101 };
 102
 103 /*
 104  * DAI ops entries
 105  */
 106
 107 static int ad193x_mute(struct snd_soc_dai *dai, int mute)
 108 {
 109         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
 110
 111         if (mute)
 112                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 113                                     AD193X_DAC_MASTER_MUTE,
 114                                     AD193X_DAC_MASTER_MUTE);
 115         else
 116                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 117                                     AD193X_DAC_MASTER_MUTE, 0);
 118
 119         return 0;
 120 }
 121
 122 static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
 123                                unsigned int rx_mask, int slots, int width)
 124 {
 125         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
 126         unsigned int channels;
 127
 128         switch (slots) {
 129         case 2:
 130                 channels = AD193X_2_CHANNELS;
 131                 break;
 132         case 4:
 133                 channels = AD193X_4_CHANNELS;
 134                 break;
 135         case 8:
 136                 channels = AD193X_8_CHANNELS;
 137                 break;
 138         case 16:
 139                 channels = AD193X_16_CHANNELS;
 140                 break;
 141         default:
 142                 return -EINVAL;
 143         }
 144
 145         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
 146                 AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT);
 147         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
 148                 AD193X_ADC_CHAN_MASK, channels << AD193X_ADC_CHAN_SHFT);
 149
 150         return 0;
 151 }
 152
 153 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
 154                 unsigned int fmt)
 155 {
 156         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec_dai->codec);
 157         unsigned int adc_serfmt = 0;
 158         unsigned int adc_fmt = 0;
 159         unsigned int dac_fmt = 0;
 160
 161         /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
 162          * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
 163          */
 164         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 165         case SND_SOC_DAIFMT_I2S:
 166                 adc_serfmt |= AD193X_ADC_SERFMT_TDM;
 167                 break;
 168         case SND_SOC_DAIFMT_DSP_A:
 169                 adc_serfmt |= AD193X_ADC_SERFMT_AUX;
 170                 break;
 171         default:
 172                 return -EINVAL;
 173         }
 174
 175         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 176         case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
 177                 break;
 178         case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
 179                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
 180                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
 181                 break;
 182         case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
 183                 adc_fmt |= AD193X_ADC_BCLK_INV;
 184                 dac_fmt |= AD193X_DAC_BCLK_INV;
 185                 break;
 186         case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
 187                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
 188                 adc_fmt |= AD193X_ADC_BCLK_INV;
 189                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
 190                 dac_fmt |= AD193X_DAC_BCLK_INV;
 191                 break;
 192         default:
 193                 return -EINVAL;
 194         }
 195
 196         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 197         case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
 198                 adc_fmt |= AD193X_ADC_LCR_MASTER;
 199                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
 200                 dac_fmt |= AD193X_DAC_LCR_MASTER;
 201                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
 202                 break;
 203         case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
 204                 adc_fmt |= AD193X_ADC_LCR_MASTER;
 205                 dac_fmt |= AD193X_DAC_LCR_MASTER;
 206                 break;
 207         case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
 208                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
 209                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
 210                 break;
 211         case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
 212                 break;
 213         default:
 214                 return -EINVAL;
 215         }
 216
 217         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
 218                 AD193X_ADC_SERFMT_MASK, adc_serfmt);
 219         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
 220                 AD193X_ADC_FMT_MASK, adc_fmt);
 221         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
 222                 AD193X_DAC_FMT_MASK, dac_fmt);
 223
 224         return 0;
 225 }
 226
 227 static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 228                 int clk_id, unsigned int freq, int dir)
 229 {
 230         struct snd_soc_codec *codec = codec_dai->codec;
 231         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 232         switch (freq) {
 233         case 12288000:
 234         case 18432000:
 235         case 24576000:
 236         case 36864000:
 237                 ad193x->sysclk = freq;
 238                 return 0;
 239         }
 240         return -EINVAL;
 241 }
 242
 243 static int ad193x_hw_params(struct snd_pcm_substream *substream,
 244                 struct snd_pcm_hw_params *params,
 245                 struct snd_soc_dai *dai)
 246 {
 247         int word_len = 0, master_rate = 0;
 248         struct snd_soc_codec *codec = dai->codec;
 249         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 250
 251         /* bit size */
 252         switch (params_format(params)) {
 253         case SNDRV_PCM_FORMAT_S16_LE:
 254                 word_len = 3;
 255                 break;
 256         case SNDRV_PCM_FORMAT_S20_3LE:
 257                 word_len = 1;
 258                 break;
 259         case SNDRV_PCM_FORMAT_S24_LE:
 260         case SNDRV_PCM_FORMAT_S32_LE:
 261                 word_len = 0;
 262                 break;
 263         }
 264
 265         switch (ad193x->sysclk) {
 266         case 12288000:
 267                 master_rate = AD193X_PLL_INPUT_256;
 268                 break;
 269         case 18432000:
 270                 master_rate = AD193X_PLL_INPUT_384;
 271                 break;
 272         case 24576000:
 273                 master_rate = AD193X_PLL_INPUT_512;
 274                 break;
 275         case 36864000:
 276                 master_rate = AD193X_PLL_INPUT_768;
 277                 break;
 278         }
 279
 280         regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
 281                             AD193X_PLL_INPUT_MASK, master_rate);
 282
 283         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 284                             AD193X_DAC_WORD_LEN_MASK,
 285                             word_len << AD193X_DAC_WORD_LEN_SHFT);
 286
 287         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
 288                             AD193X_ADC_WORD_LEN_MASK, word_len);
 289
 290         return 0;
 291 }
 292
 293 static const struct snd_soc_dai_ops ad193x_dai_ops = {
 294         .hw_params = ad193x_hw_params,
 295         .digital_mute = ad193x_mute,
 296         .set_tdm_slot = ad193x_set_tdm_slot,
 297         .set_sysclk     = ad193x_set_dai_sysclk,
 298         .set_fmt = ad193x_set_dai_fmt,
 299 };
 300
 301 /* codec DAI instance */
 302 static struct snd_soc_dai_driver ad193x_dai = {
 303         .name = "ad193x-hifi",
 304         .playback = {
 305                 .stream_name = "Playback",
 306                 .channels_min = 2,
 307                 .channels_max = 8,
 308                 .rates = SNDRV_PCM_RATE_48000,
 309                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 310                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 311         },
 312         .capture = {
 313                 .stream_name = "Capture",
 314                 .channels_min = 2,
 315                 .channels_max = 4,
 316                 .rates = SNDRV_PCM_RATE_48000,
 317                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 318                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 319         },
 320         .ops = &ad193x_dai_ops,
 321 };
 322
 323 static int ad193x_probe(struct snd_soc_codec *codec)
 324 {
 325         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 326         int ret;
 327
 328         codec->control_data = ad193x->regmap;
 329         ret = snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
 330         if (ret < 0) {
 331                 dev_err(codec->dev, "failed to set cache I/O: %d\n", ret);
 332                 return ret;
 333         }
 334
 335         /* default setting for ad193x */
 336
 337         /* unmute dac channels */
 338         regmap_write(ad193x->regmap, AD193X_DAC_CHNL_MUTE, 0x0);
 339         /* de-emphasis: 48kHz, powedown dac */
 340         regmap_write(ad193x->regmap, AD193X_DAC_CTRL2, 0x1A);
 341         /* powerdown dac, dac in tdm mode */
 342         regmap_write(ad193x->regmap, AD193X_DAC_CTRL0, 0x41);
 343         /* high-pass filter enable */
 344         regmap_write(ad193x->regmap, AD193X_ADC_CTRL0, 0x3);
 345         /* sata delay=1, adc aux mode */
 346         regmap_write(ad193x->regmap, AD193X_ADC_CTRL1, 0x43);
 347         /* pll input: mclki/xi */
 348         regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
 349         regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL1, 0x04);
 350
 351         return ret;
 352 }
 353
 354 static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
 355         .probe =        ad193x_probe,
 356         .controls = ad193x_snd_controls,
 357         .num_controls = ARRAY_SIZE(ad193x_snd_controls),
 358         .dapm_widgets = ad193x_dapm_widgets,
 359         .num_dapm_widgets = ARRAY_SIZE(ad193x_dapm_widgets),
 360         .dapm_routes = audio_paths,
 361         .num_dapm_routes = ARRAY_SIZE(audio_paths),
 362 };
 363
 364 static bool adau193x_reg_volatile(struct device *dev, unsigned int reg)
 365 {
 366         return false;
 367 }
 368
 369 #if defined(CONFIG_SPI_MASTER)
 370
 371 static const struct regmap_config ad193x_spi_regmap_config = {
 372         .val_bits = 8,
 373         .reg_bits = 16,
 374         .read_flag_mask = 0x09,
 375         .write_flag_mask = 0x08,
 376
 377         .max_register = AD193X_NUM_REGS - 1,
 378         .volatile_reg = adau193x_reg_volatile,
 379 };
 380
 381 static int ad193x_spi_probe(struct spi_device *spi)
 382 {
 383         struct ad193x_priv *ad193x;
 384
 385         ad193x = devm_kzalloc(&spi->dev, sizeof(struct ad193x_priv),
 386                               GFP_KERNEL);
 387         if (ad193x == NULL)
 388                 return -ENOMEM;
 389
 390         ad193x->regmap = devm_regmap_init_spi(spi, &ad193x_spi_regmap_config);
 391         if (IS_ERR(ad193x->regmap))
 392                 return PTR_ERR(ad193x->regmap);
 393
 394         spi_set_drvdata(spi, ad193x);
 395
 396         return snd_soc_register_codec(&spi->dev, &soc_codec_dev_ad193x,
 397                         &ad193x_dai, 1);
 398 }
 399
 400 static int ad193x_spi_remove(struct spi_device *spi)
 401 {
 402         snd_soc_unregister_codec(&spi->dev);
 403         return 0;
 404 }
 405
 406 static struct spi_driver ad193x_spi_driver = {
 407         .driver = {
 408                 .name   = "ad193x",
 409                 .owner  = THIS_MODULE,
 410         },
 411         .probe          = ad193x_spi_probe,
 412         .remove         = ad193x_spi_remove,
 413 };
 414 #endif
 415
 416 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 417
 418 static const struct regmap_config ad193x_i2c_regmap_config = {
 419         .val_bits = 8,
 420         .reg_bits = 8,
 421
 422         .max_register = AD193X_NUM_REGS - 1,
 423         .volatile_reg = adau193x_reg_volatile,
 424 };
 425
 426 static const struct i2c_device_id ad193x_id[] = {
 427         { "ad1936", 0 },
 428         { "ad1937", 0 },
 429         { }
 430 };
 431 MODULE_DEVICE_TABLE(i2c, ad193x_id);
 432
 433 static int ad193x_i2c_probe(struct i2c_client *client,
 434                             const struct i2c_device_id *id)
 435 {
 436         struct ad193x_priv *ad193x;
 437
 438         ad193x = devm_kzalloc(&client->dev, sizeof(struct ad193x_priv),
 439                               GFP_KERNEL);
 440         if (ad193x == NULL)
 441                 return -ENOMEM;
 442
 443         ad193x->regmap = devm_regmap_init_i2c(client, &ad193x_i2c_regmap_config);
 444         if (IS_ERR(ad193x->regmap))
 445                 return PTR_ERR(ad193x->regmap);
 446
 447         i2c_set_clientdata(client, ad193x);
 448
 449         return snd_soc_register_codec(&client->dev, &soc_codec_dev_ad193x,
 450                         &ad193x_dai, 1);
 451 }
 452
 453 static int ad193x_i2c_remove(struct i2c_client *client)
 454 {
 455         snd_soc_unregister_codec(&client->dev);
 456         return 0;
 457 }
 458
 459 static struct i2c_driver ad193x_i2c_driver = {
 460         .driver = {
 461                 .name = "ad193x",
 462         },
 463         .probe    = ad193x_i2c_probe,
 464         .remove   = ad193x_i2c_remove,
 465         .id_table = ad193x_id,
 466 };
 467 #endif
 468
 469 static int __init ad193x_modinit(void)
 470 {
 471         int ret;
 472
 473 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 474         ret =  i2c_add_driver(&ad193x_i2c_driver);
 475         if (ret != 0) {
 476                 printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n",
 477                                 ret);
 478         }
 479 #endif
 480
 481 #if defined(CONFIG_SPI_MASTER)
 482         ret = spi_register_driver(&ad193x_spi_driver);
 483         if (ret != 0) {
 484                 printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n",
 485                                 ret);
 486         }
 487 #endif
 488         return ret;
 489 }
 490 module_init(ad193x_modinit);
 491
 492 static void __exit ad193x_modexit(void)
 493 {
 494 #if defined(CONFIG_SPI_MASTER)
 495         spi_unregister_driver(&ad193x_spi_driver);
 496 #endif
 497
 498 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 499         i2c_del_driver(&ad193x_i2c_driver);
 500 #endif
 501 }
 502 module_exit(ad193x_modexit);
 503
 504 MODULE_DESCRIPTION("ASoC ad193x driver");
 505 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 506 MODULE_LICENSE("GPL");