sound/soc/codecs/ak4613.c

   1 /*
   2  * ak4613.c  --  Asahi Kasei ALSA Soc Audio driver
   3  *
   4  * Copyright (C) 2015 Renesas Electronics Corporation
   5  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6  *
   7  * Based on ak4642.c by Kuninori Morimoto
   8  * Based on wm8731.c by Richard Purdie
   9  * Based on ak4535.c by Richard Purdie
  10  * Based on wm8753.c by Liam Girdwood
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  */
  16
  17 #include <linux/clk.h>
  18 #include <linux/i2c.h>
  19 #include <linux/slab.h>
  20 #include <linux/of_device.h>
  21 #include <linux/module.h>
  22 #include <linux/regmap.h>
  23 #include <sound/soc.h>
  24 #include <sound/pcm_params.h>
  25 #include <sound/tlv.h>
  26
  27 #define PW_MGMT1        0x00 /* Power Management 1 */
  28 #define PW_MGMT2        0x01 /* Power Management 2 */
  29 #define PW_MGMT3        0x02 /* Power Management 3 */
  30 #define CTRL1           0x03 /* Control 1 */
  31 #define CTRL2           0x04 /* Control 2 */
  32 #define DEMP1           0x05 /* De-emphasis1 */
  33 #define DEMP2           0x06 /* De-emphasis2 */
  34 #define OFD             0x07 /* Overflow Detect */
  35 #define ZRD             0x08 /* Zero Detect */
  36 #define ICTRL           0x09 /* Input Control */
  37 #define OCTRL           0x0a /* Output Control */
  38 #define LOUT1           0x0b /* LOUT1 Volume Control */
  39 #define ROUT1           0x0c /* ROUT1 Volume Control */
  40 #define LOUT2           0x0d /* LOUT2 Volume Control */
  41 #define ROUT2           0x0e /* ROUT2 Volume Control */
  42 #define LOUT3           0x0f /* LOUT3 Volume Control */
  43 #define ROUT3           0x10 /* ROUT3 Volume Control */
  44 #define LOUT4           0x11 /* LOUT4 Volume Control */
  45 #define ROUT4           0x12 /* ROUT4 Volume Control */
  46 #define LOUT5           0x13 /* LOUT5 Volume Control */
  47 #define ROUT5           0x14 /* ROUT5 Volume Control */
  48 #define LOUT6           0x15 /* LOUT6 Volume Control */
  49 #define ROUT6           0x16 /* ROUT6 Volume Control */
  50
  51 /* PW_MGMT1 */
  52 #define RSTN            BIT(0)
  53 #define PMDAC           BIT(1)
  54 #define PMADC           BIT(2)
  55 #define PMVR            BIT(3)
  56
  57 /* PW_MGMT2 */
  58 #define PMAD_ALL        0x7
  59
  60 /* PW_MGMT3 */
  61 #define PMDA_ALL        0x3f
  62
  63 /* CTRL1 */
  64 #define DIF0            BIT(3)
  65 #define DIF1            BIT(4)
  66 #define DIF2            BIT(5)
  67 #define TDM0            BIT(6)
  68 #define TDM1            BIT(7)
  69 #define NO_FMT          (0xff)
  70 #define FMT_MASK        (0xf8)
  71
  72 /* CTRL2 */
  73 #define DFS_MASK                (3 << 2)
  74 #define DFS_NORMAL_SPEED        (0 << 2)
  75 #define DFS_DOUBLE_SPEED        (1 << 2)
  76 #define DFS_QUAD_SPEED          (2 << 2)
  77
  78 struct ak4613_formats {
  79         unsigned int width;
  80         unsigned int fmt;
  81 };
  82
  83 struct ak4613_interface {
  84         struct ak4613_formats capture;
  85         struct ak4613_formats playback;
  86 };
  87
  88 struct ak4613_priv {
  89         struct mutex lock;
  90         const struct ak4613_interface *iface;
  91
  92         unsigned int fmt;
  93         u8 oc;
  94         u8 ic;
  95         int cnt;
  96 };
  97
  98 /*
  99  * Playback Volume
 100  *
 101  * max : 0x00 : 0 dB
 102  *       ( 0.5 dB step )
 103  * min : 0xFE : -127.0 dB
 104  * mute: 0xFF
 105  */
 106 static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
 107
 108 static const struct snd_kcontrol_new ak4613_snd_controls[] = {
 109         SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
 110                          0, 0xFF, 1, out_tlv),
 111         SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
 112                          0, 0xFF, 1, out_tlv),
 113         SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
 114                          0, 0xFF, 1, out_tlv),
 115         SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
 116                          0, 0xFF, 1, out_tlv),
 117         SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
 118                          0, 0xFF, 1, out_tlv),
 119         SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
 120                          0, 0xFF, 1, out_tlv),
 121 };
 122
 123 static const struct reg_default ak4613_reg[] = {
 124         { 0x0,  0x0f }, { 0x1,  0x07 }, { 0x2,  0x3f }, { 0x3,  0x20 },
 125         { 0x4,  0x20 }, { 0x5,  0x55 }, { 0x6,  0x05 }, { 0x7,  0x07 },
 126         { 0x8,  0x0f }, { 0x9,  0x07 }, { 0xa,  0x3f }, { 0xb,  0x00 },
 127         { 0xc,  0x00 }, { 0xd,  0x00 }, { 0xe,  0x00 }, { 0xf,  0x00 },
 128         { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
 129         { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
 130 };
 131
 132 #define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3)
 133 #define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
 134 static const struct ak4613_interface ak4613_iface[] = {
 135         /* capture */                           /* playback */
 136         [0] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(16, RIGHT_J) },
 137         [1] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(20, RIGHT_J) },
 138         [2] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(24, RIGHT_J) },
 139         [3] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(24, LEFT_J) },
 140         [4] = { AUDIO_IFACE(24, I2S),           AUDIO_IFACE(24, I2S) },
 141 };
 142
 143 static const struct regmap_config ak4613_regmap_cfg = {
 144         .reg_bits               = 8,
 145         .val_bits               = 8,
 146         .max_register           = 0x16,
 147         .reg_defaults           = ak4613_reg,
 148         .num_reg_defaults       = ARRAY_SIZE(ak4613_reg),
 149         .cache_type             = REGCACHE_RBTREE,
 150 };
 151
 152 static const struct of_device_id ak4613_of_match[] = {
 153         { .compatible = "asahi-kasei,ak4613",   .data = &ak4613_regmap_cfg },
 154         {},
 155 };
 156 MODULE_DEVICE_TABLE(of, ak4613_of_match);
 157
 158 static const struct i2c_device_id ak4613_i2c_id[] = {
 159         { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
 160         { }
 161 };
 162 MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
 163
 164 static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
 165
 166         /* Outputs */
 167         SND_SOC_DAPM_OUTPUT("LOUT1"),
 168         SND_SOC_DAPM_OUTPUT("LOUT2"),
 169         SND_SOC_DAPM_OUTPUT("LOUT3"),
 170         SND_SOC_DAPM_OUTPUT("LOUT4"),
 171         SND_SOC_DAPM_OUTPUT("LOUT5"),
 172         SND_SOC_DAPM_OUTPUT("LOUT6"),
 173
 174         SND_SOC_DAPM_OUTPUT("ROUT1"),
 175         SND_SOC_DAPM_OUTPUT("ROUT2"),
 176         SND_SOC_DAPM_OUTPUT("ROUT3"),
 177         SND_SOC_DAPM_OUTPUT("ROUT4"),
 178         SND_SOC_DAPM_OUTPUT("ROUT5"),
 179         SND_SOC_DAPM_OUTPUT("ROUT6"),
 180
 181         /* Inputs */
 182         SND_SOC_DAPM_INPUT("LIN1"),
 183         SND_SOC_DAPM_INPUT("LIN2"),
 184
 185         SND_SOC_DAPM_INPUT("RIN1"),
 186         SND_SOC_DAPM_INPUT("RIN2"),
 187
 188         /* DAC */
 189         SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
 190         SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
 191         SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
 192         SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
 193         SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
 194         SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
 195
 196         /* ADC */
 197         SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
 198         SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
 199 };
 200
 201 static const struct snd_soc_dapm_route ak4613_intercon[] = {
 202         {"LOUT1", NULL, "DAC1"},
 203         {"LOUT2", NULL, "DAC2"},
 204         {"LOUT3", NULL, "DAC3"},
 205         {"LOUT4", NULL, "DAC4"},
 206         {"LOUT5", NULL, "DAC5"},
 207         {"LOUT6", NULL, "DAC6"},
 208
 209         {"ROUT1", NULL, "DAC1"},
 210         {"ROUT2", NULL, "DAC2"},
 211         {"ROUT3", NULL, "DAC3"},
 212         {"ROUT4", NULL, "DAC4"},
 213         {"ROUT5", NULL, "DAC5"},
 214         {"ROUT6", NULL, "DAC6"},
 215
 216         {"DAC1", NULL, "Playback"},
 217         {"DAC2", NULL, "Playback"},
 218         {"DAC3", NULL, "Playback"},
 219         {"DAC4", NULL, "Playback"},
 220         {"DAC5", NULL, "Playback"},
 221         {"DAC6", NULL, "Playback"},
 222
 223         {"Capture", NULL, "ADC1"},
 224         {"Capture", NULL, "ADC2"},
 225
 226         {"ADC1", NULL, "LIN1"},
 227         {"ADC2", NULL, "LIN2"},
 228
 229         {"ADC1", NULL, "RIN1"},
 230         {"ADC2", NULL, "RIN2"},
 231 };
 232
 233 static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
 234                                struct snd_soc_dai *dai)
 235 {
 236         struct snd_soc_codec *codec = dai->codec;
 237         struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
 238         struct device *dev = codec->dev;
 239
 240         mutex_lock(&priv->lock);
 241         priv->cnt--;
 242         if (priv->cnt < 0) {
 243                 dev_err(dev, "unexpected counter error\n");
 244                 priv->cnt = 0;
 245         }
 246         if (!priv->cnt)
 247                 priv->iface = NULL;
 248         mutex_unlock(&priv->lock);
 249 }
 250
 251 static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 252 {
 253         struct snd_soc_codec *codec = dai->codec;
 254         struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
 255
 256         fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
 257
 258         switch (fmt) {
 259         case SND_SOC_DAIFMT_RIGHT_J:
 260         case SND_SOC_DAIFMT_LEFT_J:
 261         case SND_SOC_DAIFMT_I2S:
 262                 priv->fmt = fmt;
 263
 264                 break;
 265         default:
 266                 return -EINVAL;
 267         }
 268
 269         return 0;
 270 }
 271
 272 static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface,
 273                                     int is_play,
 274                                     unsigned int fmt, unsigned int width)
 275 {
 276         const struct ak4613_formats *fmts;
 277
 278         fmts = (is_play) ? &iface->playback : &iface->capture;
 279
 280         if (fmts->fmt != fmt)
 281                 return false;
 282
 283         if (fmt == SND_SOC_DAIFMT_RIGHT_J) {
 284                 if (fmts->width != width)
 285                         return false;
 286         } else {
 287                 if (fmts->width < width)
 288                         return false;
 289         }
 290
 291         return true;
 292 }
 293
 294 static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
 295                                 struct snd_pcm_hw_params *params,
 296                                 struct snd_soc_dai *dai)
 297 {
 298         struct snd_soc_codec *codec = dai->codec;
 299         struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
 300         const struct ak4613_interface *iface;
 301         struct device *dev = codec->dev;
 302         unsigned int width = params_width(params);
 303         unsigned int fmt = priv->fmt;
 304         unsigned int rate;
 305         int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 306         int i, ret;
 307         u8 fmt_ctrl, ctrl2;
 308
 309         rate = params_rate(params);
 310         switch (rate) {
 311         case 32000:
 312         case 44100:
 313         case 48000:
 314                 ctrl2 = DFS_NORMAL_SPEED;
 315                 break;
 316         case 88200:
 317         case 96000:
 318                 ctrl2 = DFS_DOUBLE_SPEED;
 319                 break;
 320         case 176400:
 321         case 192000:
 322                 ctrl2 = DFS_QUAD_SPEED;
 323                 break;
 324         default:
 325                 return -EINVAL;
 326         }
 327
 328         /*
 329          * FIXME
 330          *
 331          * It doesn't support TDM at this point
 332          */
 333         fmt_ctrl = NO_FMT;
 334         ret = -EINVAL;
 335         iface = NULL;
 336
 337         mutex_lock(&priv->lock);
 338         if (priv->iface) {
 339                 if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
 340                         iface = priv->iface;
 341         } else {
 342                 for (i = ARRAY_SIZE(ak4613_iface); i >= 0; i--) {
 343                         if (!ak4613_dai_fmt_matching(ak4613_iface + i,
 344                                                      is_play,
 345                                                      fmt, width))
 346                                 continue;
 347                         iface = ak4613_iface + i;
 348                         break;
 349                 }
 350         }
 351
 352         if ((priv->iface == NULL) ||
 353             (priv->iface == iface)) {
 354                 priv->iface = iface;
 355                 priv->cnt++;
 356                 ret = 0;
 357         }
 358         mutex_unlock(&priv->lock);
 359
 360         if (ret < 0)
 361                 goto hw_params_end;
 362
 363         fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);
 364
 365         snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl);
 366         snd_soc_update_bits(codec, CTRL2, DFS_MASK, ctrl2);
 367
 368         snd_soc_write(codec, ICTRL, priv->ic);
 369         snd_soc_write(codec, OCTRL, priv->oc);
 370
 371 hw_params_end:
 372         if (ret < 0)
 373                 dev_warn(dev, "unsupported data width/format combination\n");
 374
 375         return ret;
 376 }
 377
 378 static int ak4613_set_bias_level(struct snd_soc_codec *codec,
 379                                  enum snd_soc_bias_level level)
 380 {
 381         u8 mgmt1 = 0;
 382
 383         switch (level) {
 384         case SND_SOC_BIAS_ON:
 385                 mgmt1 |= RSTN;
 386                 /* fall through */
 387         case SND_SOC_BIAS_PREPARE:
 388                 mgmt1 |= PMADC | PMDAC;
 389                 /* fall through */
 390         case SND_SOC_BIAS_STANDBY:
 391                 mgmt1 |= PMVR;
 392                 /* fall through */
 393         case SND_SOC_BIAS_OFF:
 394         default:
 395                 break;
 396         }
 397
 398         snd_soc_write(codec, PW_MGMT1, mgmt1);
 399
 400         return 0;
 401 }
 402
 403 static const struct snd_soc_dai_ops ak4613_dai_ops = {
 404         .shutdown       = ak4613_dai_shutdown,
 405         .set_fmt        = ak4613_dai_set_fmt,
 406         .hw_params      = ak4613_dai_hw_params,
 407 };
 408
 409 #define AK4613_PCM_RATE         (SNDRV_PCM_RATE_32000  |\
 410                                  SNDRV_PCM_RATE_44100  |\
 411                                  SNDRV_PCM_RATE_48000  |\
 412                                  SNDRV_PCM_RATE_64000  |\
 413                                  SNDRV_PCM_RATE_88200  |\
 414                                  SNDRV_PCM_RATE_96000  |\
 415                                  SNDRV_PCM_RATE_176400 |\
 416                                  SNDRV_PCM_RATE_192000)
 417 #define AK4613_PCM_FMTBIT       (SNDRV_PCM_FMTBIT_S16_LE |\
 418                                  SNDRV_PCM_FMTBIT_S24_LE)
 419
 420 static struct snd_soc_dai_driver ak4613_dai = {
 421         .name = "ak4613-hifi",
 422         .playback = {
 423                 .stream_name    = "Playback",
 424                 .channels_min   = 2,
 425                 .channels_max   = 2,
 426                 .rates          = AK4613_PCM_RATE,
 427                 .formats        = AK4613_PCM_FMTBIT,
 428         },
 429         .capture = {
 430                 .stream_name    = "Capture",
 431                 .channels_min   = 2,
 432                 .channels_max   = 2,
 433                 .rates          = AK4613_PCM_RATE,
 434                 .formats        = AK4613_PCM_FMTBIT,
 435         },
 436         .ops = &ak4613_dai_ops,
 437         .symmetric_rates = 1,
 438 };
 439
 440 static int ak4613_suspend(struct snd_soc_codec *codec)
 441 {
 442         struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
 443
 444         regcache_cache_only(regmap, true);
 445         regcache_mark_dirty(regmap);
 446         return 0;
 447 }
 448
 449 static int ak4613_resume(struct snd_soc_codec *codec)
 450 {
 451         struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
 452
 453         regcache_cache_only(regmap, false);
 454         return regcache_sync(regmap);
 455 }
 456
 457 static struct snd_soc_codec_driver soc_codec_dev_ak4613 = {
 458         .suspend                = ak4613_suspend,
 459         .resume                 = ak4613_resume,
 460         .set_bias_level         = ak4613_set_bias_level,
 461         .controls               = ak4613_snd_controls,
 462         .num_controls           = ARRAY_SIZE(ak4613_snd_controls),
 463         .dapm_widgets           = ak4613_dapm_widgets,
 464         .num_dapm_widgets       = ARRAY_SIZE(ak4613_dapm_widgets),
 465         .dapm_routes            = ak4613_intercon,
 466         .num_dapm_routes        = ARRAY_SIZE(ak4613_intercon),
 467 };
 468
 469 static void ak4613_parse_of(struct ak4613_priv *priv,
 470                             struct device *dev)
 471 {
 472         struct device_node *np = dev->of_node;
 473         char prop[32];
 474         int i;
 475
 476         /* Input 1 - 2 */
 477         for (i = 0; i < 2; i++) {
 478                 snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
 479                 if (!of_get_property(np, prop, NULL))
 480                         priv->ic |= 1 << i;
 481         }
 482
 483         /* Output 1 - 6 */
 484         for (i = 0; i < 6; i++) {
 485                 snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
 486                 if (!of_get_property(np, prop, NULL))
 487                         priv->oc |= 1 << i;
 488         }
 489 }
 490
 491 static int ak4613_i2c_probe(struct i2c_client *i2c,
 492                             const struct i2c_device_id *id)
 493 {
 494         struct device *dev = &i2c->dev;
 495         struct device_node *np = dev->of_node;
 496         const struct regmap_config *regmap_cfg;
 497         struct regmap *regmap;
 498         struct ak4613_priv *priv;
 499
 500         regmap_cfg = NULL;
 501         if (np) {
 502                 const struct of_device_id *of_id;
 503
 504                 of_id = of_match_device(ak4613_of_match, dev);
 505                 if (of_id)
 506                         regmap_cfg = of_id->data;
 507         } else {
 508                 regmap_cfg = (const struct regmap_config *)id->driver_data;
 509         }
 510
 511         if (!regmap_cfg)
 512                 return -EINVAL;
 513
 514         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 515         if (!priv)
 516                 return -ENOMEM;
 517
 518         ak4613_parse_of(priv, dev);
 519
 520         priv->iface             = NULL;
 521         priv->cnt               = 0;
 522
 523         mutex_init(&priv->lock);
 524
 525         i2c_set_clientdata(i2c, priv);
 526
 527         regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
 528         if (IS_ERR(regmap))
 529                 return PTR_ERR(regmap);
 530
 531         return snd_soc_register_codec(dev, &soc_codec_dev_ak4613,
 532                                       &ak4613_dai, 1);
 533 }
 534
 535 static int ak4613_i2c_remove(struct i2c_client *client)
 536 {
 537         snd_soc_unregister_codec(&client->dev);
 538         return 0;
 539 }
 540
 541 static struct i2c_driver ak4613_i2c_driver = {
 542         .driver = {
 543                 .name = "ak4613-codec",
 544                 .of_match_table = ak4613_of_match,
 545         },
 546         .probe          = ak4613_i2c_probe,
 547         .remove         = ak4613_i2c_remove,
 548         .id_table       = ak4613_i2c_id,
 549 };
 550
 551 module_i2c_driver(ak4613_i2c_driver);
 552
 553 MODULE_DESCRIPTION("Soc AK4613 driver");
 554 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
 555 MODULE_LICENSE("GPL v2");