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 SOC_ENUM_SINGLE_DECL(ad1836_deemp_enum,
  44                             AD1836_DAC_CTRL1, 8, 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_width(params)) {
 172         case 16:
 173                 word_len = AD1836_WORD_LEN_16;
 174                 break;
 175         case 20:
 176                 word_len = AD1836_WORD_LEN_20;
 177                 break;
 178         case 24:
 179         case 32:
 180                 word_len = AD1836_WORD_LEN_24;
 181                 break;
 182         default:
 183                 return -EINVAL;
 184         }
 185
 186         regmap_update_bits(ad1836->regmap, AD1836_DAC_CTRL1,
 187                 AD1836_DAC_WORD_LEN_MASK,
 188                 word_len << AD1836_DAC_WORD_LEN_OFFSET);
 189
 190         regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
 191                 AD1836_ADC_WORD_LEN_MASK,
 192                 word_len << AD1836_ADC_WORD_OFFSET);
 193
 194         return 0;
 195 }
 196
 197 static const struct snd_soc_dai_ops ad1836_dai_ops = {
 198         .hw_params = ad1836_hw_params,
 199         .set_fmt = ad1836_set_dai_fmt,
 200 };
 201
 202 #define AD183X_DAI(_name, num_dacs, num_adcs) \
 203 { \
 204         .name = _name "-hifi", \
 205         .playback = { \
 206                 .stream_name = "Playback", \
 207                 .channels_min = 2, \
 208                 .channels_max = (num_dacs) * 2, \
 209                 .rates = SNDRV_PCM_RATE_48000,  \
 210                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
 211                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
 212         }, \
 213         .capture = { \
 214                 .stream_name = "Capture", \
 215                 .channels_min = 2, \
 216                 .channels_max = (num_adcs) * 2, \
 217                 .rates = SNDRV_PCM_RATE_48000, \
 218                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
 219                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
 220         }, \
 221         .ops = &ad1836_dai_ops, \
 222 }
 223
 224 static struct snd_soc_dai_driver ad183x_dais[] = {
 225         [AD1835] = AD183X_DAI("ad1835", 4, 1),
 226         [AD1836] = AD183X_DAI("ad1836", 3, 2),
 227         [AD1838] = AD183X_DAI("ad1838", 3, 1),
 228 };
 229
 230 #ifdef CONFIG_PM
 231 static int ad1836_suspend(struct snd_soc_codec *codec)
 232 {
 233         struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
 234         /* reset clock control mode */
 235         return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
 236                 AD1836_ADC_SERFMT_MASK, 0);
 237 }
 238
 239 static int ad1836_resume(struct snd_soc_codec *codec)
 240 {
 241         struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
 242         /* restore clock control mode */
 243         return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
 244                 AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX);
 245 }
 246 #else
 247 #define ad1836_suspend NULL
 248 #define ad1836_resume  NULL
 249 #endif
 250
 251 static int ad1836_probe(struct snd_soc_codec *codec)
 252 {
 253         struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
 254         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
 255         int num_dacs, num_adcs;
 256         int ret = 0;
 257         int i;
 258
 259         num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2;
 260         num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2;
 261
 262         /* default setting for ad1836 */
 263         /* de-emphasis: 48kHz, power-on dac */
 264         regmap_write(ad1836->regmap, AD1836_DAC_CTRL1, 0x300);
 265         /* unmute dac channels */
 266         regmap_write(ad1836->regmap, AD1836_DAC_CTRL2, 0x0);
 267         /* high-pass filter enable, power-on adc */
 268         regmap_write(ad1836->regmap, AD1836_ADC_CTRL1, 0x100);
 269         /* unmute adc channles, adc aux mode */
 270         regmap_write(ad1836->regmap, AD1836_ADC_CTRL2, 0x180);
 271         /* volume */
 272         for (i = 1; i <= num_dacs; ++i) {
 273                 regmap_write(ad1836->regmap, AD1836_DAC_L_VOL(i), 0x3FF);
 274                 regmap_write(ad1836->regmap, AD1836_DAC_R_VOL(i), 0x3FF);
 275         }
 276
 277         if (ad1836->type == AD1836) {
 278                 /* left/right diff:PGA/MUX */
 279                 regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x3A);
 280                 ret = snd_soc_add_codec_controls(codec, ad1836_controls,
 281                                 ARRAY_SIZE(ad1836_controls));
 282                 if (ret)
 283                         return ret;
 284         } else {
 285                 regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x00);
 286         }
 287
 288         ret = snd_soc_add_codec_controls(codec, ad183x_dac_controls, num_dacs * 2);
 289         if (ret)
 290                 return ret;
 291
 292         ret = snd_soc_add_codec_controls(codec, ad183x_adc_controls, num_adcs);
 293         if (ret)
 294                 return ret;
 295
 296         ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs);
 297         if (ret)
 298                 return ret;
 299
 300         ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs);
 301         if (ret)
 302                 return ret;
 303
 304         ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs);
 305         if (ret)
 306                 return ret;
 307
 308         ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);
 309         if (ret)
 310                 return ret;
 311
 312         return ret;
 313 }
 314
 315 /* power down chip */
 316 static int ad1836_remove(struct snd_soc_codec *codec)
 317 {
 318         struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
 319         /* reset clock control mode */
 320         return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
 321                 AD1836_ADC_SERFMT_MASK, 0);
 322 }
 323
 324 static const struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
 325         .probe = ad1836_probe,
 326         .remove = ad1836_remove,
 327         .suspend = ad1836_suspend,
 328         .resume = ad1836_resume,
 329
 330         .component_driver = {
 331                 .controls               = ad183x_controls,
 332                 .num_controls           = ARRAY_SIZE(ad183x_controls),
 333                 .dapm_widgets           = ad183x_dapm_widgets,
 334                 .num_dapm_widgets       = ARRAY_SIZE(ad183x_dapm_widgets),
 335                 .dapm_routes            = ad183x_dapm_routes,
 336                 .num_dapm_routes        = ARRAY_SIZE(ad183x_dapm_routes),
 337         },
 338 };
 339
 340 static const struct reg_default ad1836_reg_defaults[] = {
 341         { AD1836_DAC_CTRL1, 0x0000 },
 342         { AD1836_DAC_CTRL2, 0x0000 },
 343         { AD1836_DAC_L_VOL(0), 0x0000 },
 344         { AD1836_DAC_R_VOL(0), 0x0000 },
 345         { AD1836_DAC_L_VOL(1), 0x0000 },
 346         { AD1836_DAC_R_VOL(1), 0x0000 },
 347         { AD1836_DAC_L_VOL(2), 0x0000 },
 348         { AD1836_DAC_R_VOL(2), 0x0000 },
 349         { AD1836_DAC_L_VOL(3), 0x0000 },
 350         { AD1836_DAC_R_VOL(3), 0x0000 },
 351         { AD1836_ADC_CTRL1, 0x0000 },
 352         { AD1836_ADC_CTRL2, 0x0000 },
 353         { AD1836_ADC_CTRL3, 0x0000 },
 354 };
 355
 356 static const struct regmap_config ad1836_regmap_config = {
 357         .val_bits = 12,
 358         .reg_bits = 4,
 359         .read_flag_mask = 0x08,
 360
 361         .max_register = AD1836_ADC_CTRL3,
 362         .reg_defaults = ad1836_reg_defaults,
 363         .num_reg_defaults = ARRAY_SIZE(ad1836_reg_defaults),
 364         .cache_type = REGCACHE_RBTREE,
 365 };
 366
 367 static int ad1836_spi_probe(struct spi_device *spi)
 368 {
 369         struct ad1836_priv *ad1836;
 370         int ret;
 371
 372         ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv),
 373                               GFP_KERNEL);
 374         if (ad1836 == NULL)
 375                 return -ENOMEM;
 376
 377         ad1836->regmap = devm_regmap_init_spi(spi, &ad1836_regmap_config);
 378         if (IS_ERR(ad1836->regmap))
 379                 return PTR_ERR(ad1836->regmap);
 380
 381         ad1836->type = spi_get_device_id(spi)->driver_data;
 382
 383         spi_set_drvdata(spi, ad1836);
 384
 385         ret = snd_soc_register_codec(&spi->dev,
 386                         &soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1);
 387         return ret;
 388 }
 389
 390 static int ad1836_spi_remove(struct spi_device *spi)
 391 {
 392         snd_soc_unregister_codec(&spi->dev);
 393         return 0;
 394 }
 395
 396 static const struct spi_device_id ad1836_ids[] = {
 397         { "ad1835", AD1835 },
 398         { "ad1836", AD1836 },
 399         { "ad1837", AD1835 },
 400         { "ad1838", AD1838 },
 401         { "ad1839", AD1838 },
 402         { },
 403 };
 404 MODULE_DEVICE_TABLE(spi, ad1836_ids);
 405
 406 static struct spi_driver ad1836_spi_driver = {
 407         .driver = {
 408                 .name   = "ad1836",
 409         },
 410         .probe          = ad1836_spi_probe,
 411         .remove         = ad1836_spi_remove,
 412         .id_table       = ad1836_ids,
 413 };
 414
 415 module_spi_driver(ad1836_spi_driver);
 416
 417 MODULE_DESCRIPTION("ASoC ad1836 driver");
 418 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 419 MODULE_LICENSE("GPL");