sound/soc/codecs/max98371.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * max98371.c -- ALSA SoC Stereo MAX98371 driver
   4  *
   5  * Copyright 2015-16 Maxim Integrated Products
   6  */
   7
   8 #include <linux/i2c.h>
   9 #include <linux/module.h>
  10 #include <linux/regmap.h>
  11 #include <linux/slab.h>
  12 #include <sound/pcm.h>
  13 #include <sound/pcm_params.h>
  14 #include <sound/soc.h>
  15 #include <sound/tlv.h>
  16 #include "max98371.h"
  17
  18 static const char *const monomix_text[] = {
  19         "Left", "Right", "LeftRightDiv2",
  20 };
  21
  22 static const char *const hpf_cutoff_txt[] = {
  23         "Disable", "DC Block", "50Hz",
  24         "100Hz", "200Hz", "400Hz", "800Hz",
  25 };
  26
  27 static SOC_ENUM_SINGLE_DECL(max98371_monomix, MAX98371_MONOMIX_CFG, 0,
  28                 monomix_text);
  29
  30 static SOC_ENUM_SINGLE_DECL(max98371_hpf_cutoff, MAX98371_HPF, 0,
  31                 hpf_cutoff_txt);
  32
  33 static const DECLARE_TLV_DB_RANGE(max98371_dht_min_gain,
  34         0, 1, TLV_DB_SCALE_ITEM(537, 66, 0),
  35         2, 3, TLV_DB_SCALE_ITEM(677, 82, 0),
  36         4, 5, TLV_DB_SCALE_ITEM(852, 104, 0),
  37         6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0),
  38         8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0),
  39         10, 11, TLV_DB_SCALE_ITEM(1699, 101, 0),
  40 );
  41
  42 static const DECLARE_TLV_DB_RANGE(max98371_dht_max_gain,
  43         0, 1, TLV_DB_SCALE_ITEM(537, 66, 0),
  44         2, 3, TLV_DB_SCALE_ITEM(677, 82, 0),
  45         4, 5, TLV_DB_SCALE_ITEM(852, 104, 0),
  46         6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0),
  47         8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0),
  48         10, 11, TLV_DB_SCALE_ITEM(1699, 208, 0),
  49 );
  50
  51 static const DECLARE_TLV_DB_RANGE(max98371_dht_rot_gain,
  52         0, 1, TLV_DB_SCALE_ITEM(-50, -50, 0),
  53         2, 6, TLV_DB_SCALE_ITEM(-100, -100, 0),
  54         7, 8, TLV_DB_SCALE_ITEM(-800, -200, 0),
  55         9, 11, TLV_DB_SCALE_ITEM(-1200, -300, 0),
  56         12, 13, TLV_DB_SCALE_ITEM(-2000, -200, 0),
  57         14, 15, TLV_DB_SCALE_ITEM(-2500, -500, 0),
  58 );
  59
  60 static const struct reg_default max98371_reg[] = {
  61         { 0x01, 0x00 },
  62         { 0x02, 0x00 },
  63         { 0x03, 0x00 },
  64         { 0x04, 0x00 },
  65         { 0x05, 0x00 },
  66         { 0x06, 0x00 },
  67         { 0x07, 0x00 },
  68         { 0x08, 0x00 },
  69         { 0x09, 0x00 },
  70         { 0x0A, 0x00 },
  71         { 0x10, 0x06 },
  72         { 0x11, 0x08 },
  73         { 0x14, 0x80 },
  74         { 0x15, 0x00 },
  75         { 0x16, 0x00 },
  76         { 0x18, 0x00 },
  77         { 0x19, 0x00 },
  78         { 0x1C, 0x00 },
  79         { 0x1D, 0x00 },
  80         { 0x1E, 0x00 },
  81         { 0x1F, 0x00 },
  82         { 0x20, 0x00 },
  83         { 0x21, 0x00 },
  84         { 0x22, 0x00 },
  85         { 0x23, 0x00 },
  86         { 0x24, 0x00 },
  87         { 0x25, 0x00 },
  88         { 0x26, 0x00 },
  89         { 0x27, 0x00 },
  90         { 0x28, 0x00 },
  91         { 0x29, 0x00 },
  92         { 0x2A, 0x00 },
  93         { 0x2B, 0x00 },
  94         { 0x2C, 0x00 },
  95         { 0x2D, 0x00 },
  96         { 0x2E, 0x0B },
  97         { 0x31, 0x00 },
  98         { 0x32, 0x18 },
  99         { 0x33, 0x00 },
 100         { 0x34, 0x00 },
 101         { 0x36, 0x00 },
 102         { 0x37, 0x00 },
 103         { 0x38, 0x00 },
 104         { 0x39, 0x00 },
 105         { 0x3A, 0x00 },
 106         { 0x3B, 0x00 },
 107         { 0x3C, 0x00 },
 108         { 0x3D, 0x00 },
 109         { 0x3E, 0x00 },
 110         { 0x3F, 0x00 },
 111         { 0x40, 0x00 },
 112         { 0x41, 0x00 },
 113         { 0x42, 0x00 },
 114         { 0x43, 0x00 },
 115         { 0x4A, 0x00 },
 116         { 0x4B, 0x00 },
 117         { 0x4C, 0x00 },
 118         { 0x4D, 0x00 },
 119         { 0x4E, 0x00 },
 120         { 0x50, 0x00 },
 121         { 0x51, 0x00 },
 122         { 0x55, 0x00 },
 123         { 0x58, 0x00 },
 124         { 0x59, 0x00 },
 125         { 0x5C, 0x00 },
 126         { 0xFF, 0x43 },
 127 };
 128
 129 static bool max98371_volatile_register(struct device *dev, unsigned int reg)
 130 {
 131         switch (reg) {
 132         case MAX98371_IRQ_CLEAR1:
 133         case MAX98371_IRQ_CLEAR2:
 134         case MAX98371_IRQ_CLEAR3:
 135         case MAX98371_VERSION:
 136                 return true;
 137         default:
 138                 return false;
 139         }
 140 }
 141
 142 static bool max98371_readable_register(struct device *dev, unsigned int reg)
 143 {
 144         switch (reg) {
 145         case MAX98371_SOFT_RESET:
 146                 return false;
 147         default:
 148                 return true;
 149         }
 150 };
 151
 152 static const DECLARE_TLV_DB_RANGE(max98371_gain_tlv,
 153         0, 7, TLV_DB_SCALE_ITEM(0, 50, 0),
 154         8, 10, TLV_DB_SCALE_ITEM(400, 100, 0)
 155 );
 156
 157 static const DECLARE_TLV_DB_SCALE(digital_tlv, -6300, 50, 1);
 158
 159 static const struct snd_kcontrol_new max98371_snd_controls[] = {
 160         SOC_SINGLE_TLV("Speaker Volume", MAX98371_GAIN,
 161                         MAX98371_GAIN_SHIFT, (1<<MAX98371_GAIN_WIDTH)-1, 0,
 162                         max98371_gain_tlv),
 163         SOC_SINGLE_TLV("Digital Volume", MAX98371_DIGITAL_GAIN, 0,
 164                         (1<<MAX98371_DIGITAL_GAIN_WIDTH)-1, 1, digital_tlv),
 165         SOC_SINGLE_TLV("Speaker DHT Max Volume", MAX98371_GAIN,
 166                         0, (1<<MAX98371_DHT_MAX_WIDTH)-1, 0,
 167                         max98371_dht_max_gain),
 168         SOC_SINGLE_TLV("Speaker DHT Min Volume", MAX98371_DHT_GAIN,
 169                         0, (1<<MAX98371_DHT_GAIN_WIDTH)-1, 0,
 170                         max98371_dht_min_gain),
 171         SOC_SINGLE_TLV("Speaker DHT Rotation Volume", MAX98371_DHT_GAIN,
 172                         0, (1<<MAX98371_DHT_ROT_WIDTH)-1, 0,
 173                         max98371_dht_rot_gain),
 174         SOC_SINGLE("DHT Attack Step", MAX98371_DHT, MAX98371_DHT_STEP, 3, 0),
 175         SOC_SINGLE("DHT Attack Rate", MAX98371_DHT, 0, 7, 0),
 176         SOC_ENUM("Monomix Select", max98371_monomix),
 177         SOC_ENUM("HPF Cutoff", max98371_hpf_cutoff),
 178 };
 179
 180 static int max98371_dai_set_fmt(struct snd_soc_dai *codec_dai,
 181                 unsigned int fmt)
 182 {
 183         struct snd_soc_component *component = codec_dai->component;
 184         struct max98371_priv *max98371 = snd_soc_component_get_drvdata(component);
 185         unsigned int val = 0;
 186
 187         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 188         case SND_SOC_DAIFMT_CBS_CFS:
 189                 break;
 190         default:
 191                 dev_err(component->dev, "DAI clock mode unsupported");
 192                 return -EINVAL;
 193         }
 194
 195         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 196         case SND_SOC_DAIFMT_I2S:
 197                 val |= 0;
 198                 break;
 199         case SND_SOC_DAIFMT_RIGHT_J:
 200                 val |= MAX98371_DAI_RIGHT;
 201                 break;
 202         case SND_SOC_DAIFMT_LEFT_J:
 203                 val |= MAX98371_DAI_LEFT;
 204                 break;
 205         default:
 206                 dev_err(component->dev, "DAI wrong mode unsupported");
 207                 return -EINVAL;
 208         }
 209         regmap_update_bits(max98371->regmap, MAX98371_FMT,
 210                         MAX98371_FMT_MODE_MASK, val);
 211         return 0;
 212 }
 213
 214 static int max98371_dai_hw_params(struct snd_pcm_substream *substream,
 215                 struct snd_pcm_hw_params *params,
 216                 struct snd_soc_dai *dai)
 217 {
 218         struct snd_soc_component *component = dai->component;
 219         struct max98371_priv *max98371 = snd_soc_component_get_drvdata(component);
 220         int blr_clk_ratio, ch_size, channels = params_channels(params);
 221         int rate = params_rate(params);
 222
 223         switch (params_format(params)) {
 224         case SNDRV_PCM_FORMAT_S8:
 225                 regmap_update_bits(max98371->regmap, MAX98371_FMT,
 226                                 MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16);
 227                 ch_size = 8;
 228                 break;
 229         case SNDRV_PCM_FORMAT_S16_LE:
 230                 regmap_update_bits(max98371->regmap, MAX98371_FMT,
 231                                 MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16);
 232                 ch_size = 16;
 233                 break;
 234         case SNDRV_PCM_FORMAT_S24_LE:
 235                 regmap_update_bits(max98371->regmap, MAX98371_FMT,
 236                                 MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32);
 237                 ch_size = 24;
 238                 break;
 239         case SNDRV_PCM_FORMAT_S32_LE:
 240                 regmap_update_bits(max98371->regmap, MAX98371_FMT,
 241                                 MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32);
 242                 ch_size = 32;
 243                 break;
 244         default:
 245                 return -EINVAL;
 246         }
 247
 248         /* BCLK/LRCLK ratio calculation */
 249         blr_clk_ratio = channels * ch_size;
 250         switch (blr_clk_ratio) {
 251         case 32:
 252                 regmap_update_bits(max98371->regmap,
 253                         MAX98371_DAI_CLK,
 254                         MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_32);
 255                 break;
 256         case 48:
 257                 regmap_update_bits(max98371->regmap,
 258                         MAX98371_DAI_CLK,
 259                         MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_48);
 260                 break;
 261         case 64:
 262                 regmap_update_bits(max98371->regmap,
 263                         MAX98371_DAI_CLK,
 264                         MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_64);
 265                 break;
 266         default:
 267                 return -EINVAL;
 268         }
 269
 270         switch (rate) {
 271         case 32000:
 272                 regmap_update_bits(max98371->regmap,
 273                         MAX98371_SPK_SR,
 274                         MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_32);
 275                 break;
 276         case 44100:
 277                 regmap_update_bits(max98371->regmap,
 278                         MAX98371_SPK_SR,
 279                         MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_44);
 280                 break;
 281         case 48000:
 282                 regmap_update_bits(max98371->regmap,
 283                         MAX98371_SPK_SR,
 284                         MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_48);
 285                 break;
 286         case 88200:
 287                 regmap_update_bits(max98371->regmap,
 288                         MAX98371_SPK_SR,
 289                         MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_88);
 290                 break;
 291         case 96000:
 292                 regmap_update_bits(max98371->regmap,
 293                         MAX98371_SPK_SR,
 294                         MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_96);
 295                 break;
 296         default:
 297                 return -EINVAL;
 298         }
 299
 300         /* enabling both the RX channels*/
 301         regmap_update_bits(max98371->regmap, MAX98371_MONOMIX_SRC,
 302                         MAX98371_MONOMIX_SRC_MASK, MONOMIX_RX_0_1);
 303         regmap_update_bits(max98371->regmap, MAX98371_DAI_CHANNEL,
 304                         MAX98371_CHANNEL_MASK, MAX98371_CHANNEL_MASK);
 305         return 0;
 306 }
 307
 308 static const struct snd_soc_dapm_widget max98371_dapm_widgets[] = {
 309         SND_SOC_DAPM_DAC("DAC", NULL, MAX98371_SPK_ENABLE, 0, 0),
 310         SND_SOC_DAPM_SUPPLY("Global Enable", MAX98371_GLOBAL_ENABLE,
 311                 0, 0, NULL, 0),
 312         SND_SOC_DAPM_OUTPUT("SPK_OUT"),
 313 };
 314
 315 static const struct snd_soc_dapm_route max98371_audio_map[] = {
 316         {"DAC", NULL, "HiFi Playback"},
 317         {"SPK_OUT", NULL, "DAC"},
 318         {"SPK_OUT", NULL, "Global Enable"},
 319 };
 320
 321 #define MAX98371_RATES SNDRV_PCM_RATE_8000_48000
 322 #define MAX98371_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE | \
 323                 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE)
 324
 325 static const struct snd_soc_dai_ops max98371_dai_ops = {
 326         .set_fmt = max98371_dai_set_fmt,
 327         .hw_params = max98371_dai_hw_params,
 328 };
 329
 330 static struct snd_soc_dai_driver max98371_dai[] = {
 331         {
 332                 .name = "max98371-aif1",
 333                 .playback = {
 334                         .stream_name = "HiFi Playback",
 335                         .channels_min = 1,
 336                         .channels_max = 2,
 337                         .rates = SNDRV_PCM_RATE_8000_48000,
 338                         .formats = MAX98371_FORMATS,
 339                 },
 340                 .ops = &max98371_dai_ops,
 341         }
 342 };
 343
 344 static const struct snd_soc_component_driver max98371_component = {
 345         .controls               = max98371_snd_controls,
 346         .num_controls           = ARRAY_SIZE(max98371_snd_controls),
 347         .dapm_routes            = max98371_audio_map,
 348         .num_dapm_routes        = ARRAY_SIZE(max98371_audio_map),
 349         .dapm_widgets           = max98371_dapm_widgets,
 350         .num_dapm_widgets       = ARRAY_SIZE(max98371_dapm_widgets),
 351         .idle_bias_on           = 1,
 352         .use_pmdown_time        = 1,
 353         .endianness             = 1,
 354         .non_legacy_dai_naming  = 1,
 355 };
 356
 357 static const struct regmap_config max98371_regmap = {
 358         .reg_bits         = 8,
 359         .val_bits         = 8,
 360         .max_register     = MAX98371_VERSION,
 361         .reg_defaults     = max98371_reg,
 362         .num_reg_defaults = ARRAY_SIZE(max98371_reg),
 363         .volatile_reg     = max98371_volatile_register,
 364         .readable_reg     = max98371_readable_register,
 365         .cache_type       = REGCACHE_RBTREE,
 366 };
 367
 368 static int max98371_i2c_probe(struct i2c_client *i2c,
 369                 const struct i2c_device_id *id)
 370 {
 371         struct max98371_priv *max98371;
 372         int ret, reg;
 373
 374         max98371 = devm_kzalloc(&i2c->dev,
 375                         sizeof(*max98371), GFP_KERNEL);
 376         if (!max98371)
 377                 return -ENOMEM;
 378
 379         i2c_set_clientdata(i2c, max98371);
 380         max98371->regmap = devm_regmap_init_i2c(i2c, &max98371_regmap);
 381         if (IS_ERR(max98371->regmap)) {
 382                 ret = PTR_ERR(max98371->regmap);
 383                 dev_err(&i2c->dev,
 384                                 "Failed to allocate regmap: %d\n", ret);
 385                 return ret;
 386         }
 387
 388         ret = regmap_read(max98371->regmap, MAX98371_VERSION, &reg);
 389         if (ret < 0) {
 390                 dev_info(&i2c->dev, "device error %d\n", ret);
 391                 return ret;
 392         }
 393         dev_info(&i2c->dev, "device version %x\n", reg);
 394
 395         ret = devm_snd_soc_register_component(&i2c->dev, &max98371_component,
 396                         max98371_dai, ARRAY_SIZE(max98371_dai));
 397         if (ret < 0) {
 398                 dev_err(&i2c->dev, "Failed to register component: %d\n", ret);
 399                 return ret;
 400         }
 401         return ret;
 402 }
 403
 404 static const struct i2c_device_id max98371_i2c_id[] = {
 405         { "max98371", 0 },
 406         { }
 407 };
 408
 409 MODULE_DEVICE_TABLE(i2c, max98371_i2c_id);
 410
 411 static const struct of_device_id max98371_of_match[] = {
 412         { .compatible = "maxim,max98371", },
 413         { }
 414 };
 415 MODULE_DEVICE_TABLE(of, max98371_of_match);
 416
 417 static struct i2c_driver max98371_i2c_driver = {
 418         .driver = {
 419                 .name = "max98371",
 420                 .pm = NULL,
 421                 .of_match_table = of_match_ptr(max98371_of_match),
 422         },
 423         .probe  = max98371_i2c_probe,
 424         .id_table = max98371_i2c_id,
 425 };
 426
 427 module_i2c_driver(max98371_i2c_driver);
 428
 429 MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>");
 430 MODULE_DESCRIPTION("ALSA SoC MAX98371 driver");
 431 MODULE_LICENSE("GPL");