sound/soc/codecs/ad1836.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2  /*
   3  * Audio Codec driver supporting:
   4  *  AD1835A, AD1836, AD1837A, AD1838A, AD1839A
   5  *
   6  * Copyright 2009-2011 Analog Devices Inc.
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/slab.h>
  11 #include <linux/module.h>
  12 #include <linux/kernel.h>
  13 #include <linux/device.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 #include <linux/spi/spi.h>
  21 #include <linux/regmap.h>
  22
  23 #include "ad1836.h"
  24
  25 enum ad1836_type {
  26         AD1835,
  27         AD1836,
  28         AD1838,
  29 };
  30
  31 /* codec private data */
  32 struct ad1836_priv {
  33         enum ad1836_type type;
  34         struct regmap *regmap;
  35 };
  36
  37 /*
  38  * AD1836 volume/mute/de-emphasis etc. controls
  39  */
  40 static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};
  41
  42 static SOC_ENUM_SINGLE_DECL(ad1836_deemp_enum,
  43                             AD1836_DAC_CTRL1, 8, ad1836_deemp);
  44
  45 #define AD1836_DAC_VOLUME(x) \
  46         SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \
  47                         AD1836_DAC_R_VOL(x), 0, 0x3FF, 0)
  48
  49 #define AD1836_DAC_SWITCH(x) \
  50         SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \
  51                         AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
  52
  53 #define AD1836_ADC_SWITCH(x) \
  54         SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
  55                 AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
  56
  57 static const struct snd_kcontrol_new ad183x_dac_controls[] = {
  58         AD1836_DAC_VOLUME(1),
  59         AD1836_DAC_SWITCH(1),
  60         AD1836_DAC_VOLUME(2),
  61         AD1836_DAC_SWITCH(2),
  62         AD1836_DAC_VOLUME(3),
  63         AD1836_DAC_SWITCH(3),
  64         AD1836_DAC_VOLUME(4),
  65         AD1836_DAC_SWITCH(4),
  66 };
  67
  68 static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = {
  69         SND_SOC_DAPM_OUTPUT("DAC1OUT"),
  70         SND_SOC_DAPM_OUTPUT("DAC2OUT"),
  71         SND_SOC_DAPM_OUTPUT("DAC3OUT"),
  72         SND_SOC_DAPM_OUTPUT("DAC4OUT"),
  73 };
  74
  75 static const struct snd_soc_dapm_route ad183x_dac_routes[] = {
  76         { "DAC1OUT", NULL, "DAC" },
  77         { "DAC2OUT", NULL, "DAC" },
  78         { "DAC3OUT", NULL, "DAC" },
  79         { "DAC4OUT", NULL, "DAC" },
  80 };
  81
  82 static const struct snd_kcontrol_new ad183x_adc_controls[] = {
  83         AD1836_ADC_SWITCH(1),
  84         AD1836_ADC_SWITCH(2),
  85         AD1836_ADC_SWITCH(3),
  86 };
  87
  88 static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = {
  89         SND_SOC_DAPM_INPUT("ADC1IN"),
  90         SND_SOC_DAPM_INPUT("ADC2IN"),
  91 };
  92
  93 static const struct snd_soc_dapm_route ad183x_adc_routes[] = {
  94         { "ADC", NULL, "ADC1IN" },
  95         { "ADC", NULL, "ADC2IN" },
  96 };
  97
  98 static const struct snd_kcontrol_new ad183x_controls[] = {
  99         /* ADC high-pass filter */
 100         SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
 101                         AD1836_ADC_HIGHPASS_FILTER, 1, 0),
 102
 103         /* DAC de-emphasis */
 104         SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum),
 105 };
 106
 107 static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = {
 108         SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1,
 109                                 AD1836_DAC_POWERDOWN, 1),
 110         SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
 111         SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1,
 112                                 AD1836_ADC_POWERDOWN, 1, NULL, 0),
 113 };
 114
 115 static const struct snd_soc_dapm_route ad183x_dapm_routes[] = {
 116         { "DAC", NULL, "ADC_PWR" },
 117         { "ADC", NULL, "ADC_PWR" },
 118 };
 119
 120 static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0);
 121
 122 static const struct snd_kcontrol_new ad1836_controls[] = {
 123         SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0,
 124             ad1836_in_tlv),
 125 };
 126
 127 /*
 128  * DAI ops entries
 129  */
 130
 131 static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai,
 132                 unsigned int fmt)
 133 {
 134         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 135         /* at present, we support adc aux mode to interface with
 136          * blackfin sport tdm mode
 137          */
 138         case SND_SOC_DAIFMT_DSP_A:
 139                 break;
 140         default:
 141                 return -EINVAL;
 142         }
 143
 144         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 145         case SND_SOC_DAIFMT_IB_IF:
 146                 break;
 147         default:
 148                 return -EINVAL;
 149         }
 150
 151         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 152         /* ALCLK,ABCLK are both output, AD1836 can only be master */
 153         case SND_SOC_DAIFMT_CBM_CFM:
 154                 break;
 155         default:
 156                 return -EINVAL;
 157         }
 158
 159         return 0;
 160 }
 161
 162 static int ad1836_hw_params(struct snd_pcm_substream *substream,
 163                 struct snd_pcm_hw_params *params,
 164                 struct snd_soc_dai *dai)
 165 {
 166         struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(dai->component);
 167         int word_len = 0;
 168
 169         /* bit size */
 170         switch (params_width(params)) {
 171         case 16:
 172                 word_len = AD1836_WORD_LEN_16;
 173                 break;
 174         case 20:
 175                 word_len = AD1836_WORD_LEN_20;
 176                 break;
 177         case 24:
 178         case 32:
 179                 word_len = AD1836_WORD_LEN_24;
 180                 break;
 181         default:
 182                 return -EINVAL;
 183         }
 184
 185         regmap_update_bits(ad1836->regmap, AD1836_DAC_CTRL1,
 186                 AD1836_DAC_WORD_LEN_MASK,
 187                 word_len << AD1836_DAC_WORD_LEN_OFFSET);
 188
 189         regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
 190                 AD1836_ADC_WORD_LEN_MASK,
 191                 word_len << AD1836_ADC_WORD_OFFSET);
 192
 193         return 0;
 194 }
 195
 196 static const struct snd_soc_dai_ops ad1836_dai_ops = {
 197         .hw_params = ad1836_hw_params,
 198         .set_fmt = ad1836_set_dai_fmt,
 199 };
 200
 201 #define AD183X_DAI(_name, num_dacs, num_adcs) \
 202 { \
 203         .name = _name "-hifi", \
 204         .playback = { \
 205                 .stream_name = "Playback", \
 206                 .channels_min = 2, \
 207                 .channels_max = (num_dacs) * 2, \
 208                 .rates = SNDRV_PCM_RATE_48000,  \
 209                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
 210                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
 211         }, \
 212         .capture = { \
 213                 .stream_name = "Capture", \
 214                 .channels_min = 2, \
 215                 .channels_max = (num_adcs) * 2, \
 216                 .rates = SNDRV_PCM_RATE_48000, \
 217                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
 218                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
 219         }, \
 220         .ops = &ad1836_dai_ops, \
 221 }
 222
 223 static struct snd_soc_dai_driver ad183x_dais[] = {
 224         [AD1835] = AD183X_DAI("ad1835", 4, 1),
 225         [AD1836] = AD183X_DAI("ad1836", 3, 2),
 226         [AD1838] = AD183X_DAI("ad1838", 3, 1),
 227 };
 228
 229 #ifdef CONFIG_PM
 230 static int ad1836_suspend(struct snd_soc_component *component)
 231 {
 232         struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(component);
 233         /* reset clock control mode */
 234         return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
 235                 AD1836_ADC_SERFMT_MASK, 0);
 236 }
 237
 238 static int ad1836_resume(struct snd_soc_component *component)
 239 {
 240         struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(component);
 241         /* restore clock control mode */
 242         return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
 243                 AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX);
 244 }
 245 #else
 246 #define ad1836_suspend NULL
 247 #define ad1836_resume  NULL
 248 #endif
 249
 250 static int ad1836_probe(struct snd_soc_component *component)
 251 {
 252         struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(component);
 253         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
 254         int num_dacs, num_adcs;
 255         int ret = 0;
 256         int i;
 257
 258         num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2;
 259         num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2;
 260
 261         /* default setting for ad1836 */
 262         /* de-emphasis: 48kHz, power-on dac */
 263         regmap_write(ad1836->regmap, AD1836_DAC_CTRL1, 0x300);
 264         /* unmute dac channels */
 265         regmap_write(ad1836->regmap, AD1836_DAC_CTRL2, 0x0);
 266         /* high-pass filter enable, power-on adc */
 267         regmap_write(ad1836->regmap, AD1836_ADC_CTRL1, 0x100);
 268         /* unmute adc channles, adc aux mode */
 269         regmap_write(ad1836->regmap, AD1836_ADC_CTRL2, 0x180);
 270         /* volume */
 271         for (i = 1; i <= num_dacs; ++i) {
 272                 regmap_write(ad1836->regmap, AD1836_DAC_L_VOL(i), 0x3FF);
 273                 regmap_write(ad1836->regmap, AD1836_DAC_R_VOL(i), 0x3FF);
 274         }
 275
 276         if (ad1836->type == AD1836) {
 277                 /* left/right diff:PGA/MUX */
 278                 regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x3A);
 279                 ret = snd_soc_add_component_controls(component, ad1836_controls,
 280                                 ARRAY_SIZE(ad1836_controls));
 281                 if (ret)
 282                         return ret;
 283         } else {
 284                 regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x00);
 285         }
 286
 287         ret = snd_soc_add_component_controls(component, ad183x_dac_controls, num_dacs * 2);
 288         if (ret)
 289                 return ret;
 290
 291         ret = snd_soc_add_component_controls(component, ad183x_adc_controls, num_adcs);
 292         if (ret)
 293                 return ret;
 294
 295         ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs);
 296         if (ret)
 297                 return ret;
 298
 299         ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs);
 300         if (ret)
 301                 return ret;
 302
 303         ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs);
 304         if (ret)
 305                 return ret;
 306
 307         ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);
 308         if (ret)
 309                 return ret;
 310
 311         return ret;
 312 }
 313
 314 /* power down chip */
 315 static void ad1836_remove(struct snd_soc_component *component)
 316 {
 317         struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(component);
 318         /* reset clock control mode */
 319         regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
 320                 AD1836_ADC_SERFMT_MASK, 0);
 321 }
 322
 323 static const struct snd_soc_component_driver soc_component_dev_ad1836 = {
 324         .probe                  = ad1836_probe,
 325         .remove                 = ad1836_remove,
 326         .suspend                = ad1836_suspend,
 327         .resume                 = ad1836_resume,
 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         .idle_bias_on           = 1,
 335         .use_pmdown_time        = 1,
 336         .endianness             = 1,
 337         .non_legacy_dai_naming  = 1,
 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 = devm_snd_soc_register_component(&spi->dev,
 386                         &soc_component_dev_ad1836, &ad183x_dais[ad1836->type], 1);
 387         return ret;
 388 }
 389
 390 static const struct spi_device_id ad1836_ids[] = {
 391         { "ad1835", AD1835 },
 392         { "ad1836", AD1836 },
 393         { "ad1837", AD1835 },
 394         { "ad1838", AD1838 },
 395         { "ad1839", AD1838 },
 396         { },
 397 };
 398 MODULE_DEVICE_TABLE(spi, ad1836_ids);
 399
 400 static struct spi_driver ad1836_spi_driver = {
 401         .driver = {
 402                 .name   = "ad1836",
 403         },
 404         .probe          = ad1836_spi_probe,
 405         .id_table       = ad1836_ids,
 406 };
 407
 408 module_spi_driver(ad1836_spi_driver);
 409
 410 MODULE_DESCRIPTION("ASoC ad1836 driver");
 411 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 412 MODULE_LICENSE("GPL");