sound/soc/codecs/ad1836.c

   1  /*
   2  * Audio Codec driver supporting:
   3  *  AD1835A, AD1836, AD1837A, AD1838A, AD1839A
   4  *
   5  * Copyright 2009-2011 Analog Devices Inc.
   6  *
   7  * Licensed under the GPL-2 or later.
   8  */
   9
  10 #include <linux/init.h>
  11 #include <linux/slab.h>
  12 #include <linux/module.h>
  13 #include <linux/kernel.h>
  14 #include <linux/device.h>
  15 #include <sound/core.h>
  16 #include <sound/pcm.h>
  17 #include <sound/pcm_params.h>
  18 #include <sound/initval.h>
  19 #include <sound/soc.h>
  20 #include <sound/tlv.h>
  21 #include <linux/spi/spi.h>
  22 #include <linux/regmap.h>
  23
  24 #include "ad1836.h"
  25
  26 enum ad1836_type {
  27         AD1835,
  28         AD1836,
  29         AD1838,
  30 };
  31
  32 /* codec private data */
  33 struct ad1836_priv {
  34         enum ad1836_type type;
  35         struct regmap *regmap;
  36 };
  37
  38 /*
  39  * AD1836 volume/mute/de-emphasis etc. controls
  40  */
  41 static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};
  42
  43 static const struct soc_enum ad1836_deemp_enum =
  44         SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp);
  45
  46 #define AD1836_DAC_VOLUME(x) \
  47         SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \
  48                         AD1836_DAC_R_VOL(x), 0, 0x3FF, 0)
  49
  50 #define AD1836_DAC_SWITCH(x) \
  51         SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \
  52                         AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
  53
  54 #define AD1836_ADC_SWITCH(x) \
  55         SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
  56                 AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
  57
  58 static const struct snd_kcontrol_new ad183x_dac_controls[] = {
  59         AD1836_DAC_VOLUME(1),
  60         AD1836_DAC_SWITCH(1),
  61         AD1836_DAC_VOLUME(2),
  62         AD1836_DAC_SWITCH(2),
  63         AD1836_DAC_VOLUME(3),
  64         AD1836_DAC_SWITCH(3),
  65         AD1836_DAC_VOLUME(4),
  66         AD1836_DAC_SWITCH(4),
  67 };
  68
  69 static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = {
  70         SND_SOC_DAPM_OUTPUT("DAC1OUT"),
  71         SND_SOC_DAPM_OUTPUT("DAC2OUT"),
  72         SND_SOC_DAPM_OUTPUT("DAC3OUT"),
  73         SND_SOC_DAPM_OUTPUT("DAC4OUT"),
  74 };
  75
  76 static const struct snd_soc_dapm_route ad183x_dac_routes[] = {
  77         { "DAC1OUT", NULL, "DAC" },
  78         { "DAC2OUT", NULL, "DAC" },
  79         { "DAC3OUT", NULL, "DAC" },
  80         { "DAC4OUT", NULL, "DAC" },
  81 };
  82
  83 static const struct snd_kcontrol_new ad183x_adc_controls[] = {
  84         AD1836_ADC_SWITCH(1),
  85         AD1836_ADC_SWITCH(2),
  86         AD1836_ADC_SWITCH(3),
  87 };
  88
  89 static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = {
  90         SND_SOC_DAPM_INPUT("ADC1IN"),
  91         SND_SOC_DAPM_INPUT("ADC2IN"),
  92 };
  93
  94 static const struct snd_soc_dapm_route ad183x_adc_routes[] = {
  95         { "ADC", NULL, "ADC1IN" },
  96         { "ADC", NULL, "ADC2IN" },
  97 };
  98
  99 static const struct snd_kcontrol_new ad183x_controls[] = {
 100         /* ADC high-pass filter */
 101         SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
 102                         AD1836_ADC_HIGHPASS_FILTER, 1, 0),
 103
 104         /* DAC de-emphasis */
 105         SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum),
 106 };
 107
 108 static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = {
 109         SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1,
 110                                 AD1836_DAC_POWERDOWN, 1),
 111         SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
 112         SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1,
 113                                 AD1836_ADC_POWERDOWN, 1, NULL, 0),
 114 };
 115
 116 static const struct snd_soc_dapm_route ad183x_dapm_routes[] = {
 117         { "DAC", NULL, "ADC_PWR" },
 118         { "ADC", NULL, "ADC_PWR" },
 119 };
 120
 121 static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0);
 122
 123 static const struct snd_kcontrol_new ad1836_controls[] = {
 124         SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0,
 125             ad1836_in_tlv),
 126 };
 127
 128 /*
 129  * DAI ops entries
 130  */
 131
 132 static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai,
 133                 unsigned int fmt)
 134 {
 135         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 136         /* at present, we support adc aux mode to interface with
 137          * blackfin sport tdm mode
 138          */
 139         case SND_SOC_DAIFMT_DSP_A:
 140                 break;
 141         default:
 142                 return -EINVAL;
 143         }
 144
 145         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 146         case SND_SOC_DAIFMT_IB_IF:
 147                 break;
 148         default:
 149                 return -EINVAL;
 150         }
 151
 152         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 153         /* ALCLK,ABCLK are both output, AD1836 can only be master */
 154         case SND_SOC_DAIFMT_CBM_CFM:
 155                 break;
 156         default:
 157                 return -EINVAL;
 158         }
 159
 160         return 0;
 161 }
 162
 163 static int ad1836_hw_params(struct snd_pcm_substream *substream,
 164                 struct snd_pcm_hw_params *params,
 165                 struct snd_soc_dai *dai)
 166 {
 167         struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(dai->codec);
 168         int word_len = 0;
 169
 170         /* bit size */
 171         switch (params_format(params)) {
 172         case SNDRV_PCM_FORMAT_S16_LE:
 173                 word_len = AD1836_WORD_LEN_16;
 174                 break;
 175         case SNDRV_PCM_FORMAT_S20_3LE:
 176                 word_len = AD1836_WORD_LEN_20;
 177                 break;
 178         case SNDRV_PCM_FORMAT_S24_LE:
 179         case SNDRV_PCM_FORMAT_S32_LE:
 180                 word_len = AD1836_WORD_LEN_24;
 181                 break;
 182         }
 183
 184         regmap_update_bits(ad1836->regmap, AD1836_DAC_CTRL1,
 185                 AD1836_DAC_WORD_LEN_MASK,
 186                 word_len << AD1836_DAC_WORD_LEN_OFFSET);
 187
 188         regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
 189                 AD1836_ADC_WORD_LEN_MASK,
 190                 word_len << AD1836_ADC_WORD_OFFSET);
 191
 192         return 0;
 193 }
 194
 195 static const struct snd_soc_dai_ops ad1836_dai_ops = {
 196         .hw_params = ad1836_hw_params,
 197         .set_fmt = ad1836_set_dai_fmt,
 198 };
 199
 200 #define AD183X_DAI(_name, num_dacs, num_adcs) \
 201 { \
 202         .name = _name "-hifi", \
 203         .playback = { \
 204                 .stream_name = "Playback", \
 205                 .channels_min = 2, \
 206                 .channels_max = (num_dacs) * 2, \
 207                 .rates = SNDRV_PCM_RATE_48000,  \
 208                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
 209                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
 210         }, \
 211         .capture = { \
 212                 .stream_name = "Capture", \
 213                 .channels_min = 2, \
 214                 .channels_max = (num_adcs) * 2, \
 215                 .rates = SNDRV_PCM_RATE_48000, \
 216                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
 217                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
 218         }, \
 219         .ops = &ad1836_dai_ops, \
 220 }
 221
 222 static struct snd_soc_dai_driver ad183x_dais[] = {
 223         [AD1835] = AD183X_DAI("ad1835", 4, 1),
 224         [AD1836] = AD183X_DAI("ad1836", 3, 2),
 225         [AD1838] = AD183X_DAI("ad1838", 3, 1),
 226 };
 227
 228 #ifdef CONFIG_PM
 229 static int ad1836_suspend(struct snd_soc_codec *codec)
 230 {
 231         struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
 232         /* reset clock control mode */
 233         return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
 234                 AD1836_ADC_SERFMT_MASK, 0);
 235 }
 236
 237 static int ad1836_resume(struct snd_soc_codec *codec)
 238 {
 239         struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
 240         /* restore clock control mode */
 241         return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
 242                 AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX);
 243 }
 244 #else
 245 #define ad1836_suspend NULL
 246 #define ad1836_resume  NULL
 247 #endif
 248
 249 static int ad1836_probe(struct snd_soc_codec *codec)
 250 {
 251         struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
 252         struct snd_soc_dapm_context *dapm = &codec->dapm;
 253         int num_dacs, num_adcs;
 254         int ret = 0;
 255         int i;
 256
 257         num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2;
 258         num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2;
 259
 260         /* default setting for ad1836 */
 261         /* de-emphasis: 48kHz, power-on dac */
 262         regmap_write(ad1836->regmap, AD1836_DAC_CTRL1, 0x300);
 263         /* unmute dac channels */
 264         regmap_write(ad1836->regmap, AD1836_DAC_CTRL2, 0x0);
 265         /* high-pass filter enable, power-on adc */
 266         regmap_write(ad1836->regmap, AD1836_ADC_CTRL1, 0x100);
 267         /* unmute adc channles, adc aux mode */
 268         regmap_write(ad1836->regmap, AD1836_ADC_CTRL2, 0x180);
 269         /* volume */
 270         for (i = 1; i <= num_dacs; ++i) {
 271                 regmap_write(ad1836->regmap, AD1836_DAC_L_VOL(i), 0x3FF);
 272                 regmap_write(ad1836->regmap, AD1836_DAC_R_VOL(i), 0x3FF);
 273         }
 274
 275         if (ad1836->type == AD1836) {
 276                 /* left/right diff:PGA/MUX */
 277                 regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x3A);
 278                 ret = snd_soc_add_codec_controls(codec, ad1836_controls,
 279                                 ARRAY_SIZE(ad1836_controls));
 280                 if (ret)
 281                         return ret;
 282         } else {
 283                 regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x00);
 284         }
 285
 286         ret = snd_soc_add_codec_controls(codec, ad183x_dac_controls, num_dacs * 2);
 287         if (ret)
 288                 return ret;
 289
 290         ret = snd_soc_add_codec_controls(codec, ad183x_adc_controls, num_adcs);
 291         if (ret)
 292                 return ret;
 293
 294         ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs);
 295         if (ret)
 296                 return ret;
 297
 298         ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs);
 299         if (ret)
 300                 return ret;
 301
 302         ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs);
 303         if (ret)
 304                 return ret;
 305
 306         ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);
 307         if (ret)
 308                 return ret;
 309
 310         return ret;
 311 }
 312
 313 /* power down chip */
 314 static int ad1836_remove(struct snd_soc_codec *codec)
 315 {
 316         struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
 317         /* reset clock control mode */
 318         return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
 319                 AD1836_ADC_SERFMT_MASK, 0);
 320 }
 321
 322 static struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
 323         .probe = ad1836_probe,
 324         .remove = ad1836_remove,
 325         .suspend = ad1836_suspend,
 326         .resume = ad1836_resume,
 327
 328         .controls = ad183x_controls,
 329         .num_controls = ARRAY_SIZE(ad183x_controls),
 330         .dapm_widgets = ad183x_dapm_widgets,
 331         .num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets),
 332         .dapm_routes = ad183x_dapm_routes,
 333         .num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes),
 334 };
 335
 336 static const struct reg_default ad1836_reg_defaults[] = {
 337         { AD1836_DAC_CTRL1, 0x0000 },
 338         { AD1836_DAC_CTRL2, 0x0000 },
 339         { AD1836_DAC_L_VOL(0), 0x0000 },
 340         { AD1836_DAC_R_VOL(0), 0x0000 },
 341         { AD1836_DAC_L_VOL(1), 0x0000 },
 342         { AD1836_DAC_R_VOL(1), 0x0000 },
 343         { AD1836_DAC_L_VOL(2), 0x0000 },
 344         { AD1836_DAC_R_VOL(2), 0x0000 },
 345         { AD1836_DAC_L_VOL(3), 0x0000 },
 346         { AD1836_DAC_R_VOL(3), 0x0000 },
 347         { AD1836_ADC_CTRL1, 0x0000 },
 348         { AD1836_ADC_CTRL2, 0x0000 },
 349         { AD1836_ADC_CTRL3, 0x0000 },
 350 };
 351
 352 static const struct regmap_config ad1836_regmap_config = {
 353         .val_bits = 12,
 354         .reg_bits = 4,
 355         .read_flag_mask = 0x08,
 356
 357         .max_register = AD1836_ADC_CTRL3,
 358         .reg_defaults = ad1836_reg_defaults,
 359         .num_reg_defaults = ARRAY_SIZE(ad1836_reg_defaults),
 360         .cache_type = REGCACHE_RBTREE,
 361 };
 362
 363 static int ad1836_spi_probe(struct spi_device *spi)
 364 {
 365         struct ad1836_priv *ad1836;
 366         int ret;
 367
 368         ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv),
 369                               GFP_KERNEL);
 370         if (ad1836 == NULL)
 371                 return -ENOMEM;
 372
 373         ad1836->regmap = devm_regmap_init_spi(spi, &ad1836_regmap_config);
 374         if (IS_ERR(ad1836->regmap))
 375                 return PTR_ERR(ad1836->regmap);
 376
 377         ad1836->type = spi_get_device_id(spi)->driver_data;
 378
 379         spi_set_drvdata(spi, ad1836);
 380
 381         ret = snd_soc_register_codec(&spi->dev,
 382                         &soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1);
 383         return ret;
 384 }
 385
 386 static int ad1836_spi_remove(struct spi_device *spi)
 387 {
 388         snd_soc_unregister_codec(&spi->dev);
 389         return 0;
 390 }
 391
 392 static const struct spi_device_id ad1836_ids[] = {
 393         { "ad1835", AD1835 },
 394         { "ad1836", AD1836 },
 395         { "ad1837", AD1835 },
 396         { "ad1838", AD1838 },
 397         { "ad1839", AD1838 },
 398         { },
 399 };
 400 MODULE_DEVICE_TABLE(spi, ad1836_ids);
 401
 402 static struct spi_driver ad1836_spi_driver = {
 403         .driver = {
 404                 .name   = "ad1836",
 405                 .owner  = THIS_MODULE,
 406         },
 407         .probe          = ad1836_spi_probe,
 408         .remove         = ad1836_spi_remove,
 409         .id_table       = ad1836_ids,
 410 };
 411
 412 module_spi_driver(ad1836_spi_driver);
 413
 414 MODULE_DESCRIPTION("ASoC ad1836 driver");
 415 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 416 MODULE_LICENSE("GPL");