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 /* ICTRL */
  79 #define ICTRL_MASK      (0x3)
  80
  81 /* OCTRL */
  82 #define OCTRL_MASK      (0x3F)
  83
  84 struct ak4613_formats {
  85         unsigned int width;
  86         unsigned int fmt;
  87 };
  88
  89 struct ak4613_interface {
  90         struct ak4613_formats capture;
  91         struct ak4613_formats playback;
  92 };
  93
  94 struct ak4613_priv {
  95         struct mutex lock;
  96         const struct ak4613_interface *iface;
  97
  98         unsigned int fmt;
  99         u8 oc;
 100         u8 ic;
 101         int cnt;
 102 };
 103
 104 /*
 105  * Playback Volume
 106  *
 107  * max : 0x00 : 0 dB
 108  *       ( 0.5 dB step )
 109  * min : 0xFE : -127.0 dB
 110  * mute: 0xFF
 111  */
 112 static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
 113
 114 static const struct snd_kcontrol_new ak4613_snd_controls[] = {
 115         SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
 116                          0, 0xFF, 1, out_tlv),
 117         SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
 118                          0, 0xFF, 1, out_tlv),
 119         SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
 120                          0, 0xFF, 1, out_tlv),
 121         SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
 122                          0, 0xFF, 1, out_tlv),
 123         SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
 124                          0, 0xFF, 1, out_tlv),
 125         SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
 126                          0, 0xFF, 1, out_tlv),
 127 };
 128
 129 static const struct reg_default ak4613_reg[] = {
 130         { 0x0,  0x0f }, { 0x1,  0x07 }, { 0x2,  0x3f }, { 0x3,  0x20 },
 131         { 0x4,  0x20 }, { 0x5,  0x55 }, { 0x6,  0x05 }, { 0x7,  0x07 },
 132         { 0x8,  0x0f }, { 0x9,  0x07 }, { 0xa,  0x3f }, { 0xb,  0x00 },
 133         { 0xc,  0x00 }, { 0xd,  0x00 }, { 0xe,  0x00 }, { 0xf,  0x00 },
 134         { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
 135         { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
 136 };
 137
 138 #define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3)
 139 #define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
 140 static const struct ak4613_interface ak4613_iface[] = {
 141         /* capture */                           /* playback */
 142         [0] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(16, RIGHT_J) },
 143         [1] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(20, RIGHT_J) },
 144         [2] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(24, RIGHT_J) },
 145         [3] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(24, LEFT_J) },
 146         [4] = { AUDIO_IFACE(24, I2S),           AUDIO_IFACE(24, I2S) },
 147 };
 148
 149 static const struct regmap_config ak4613_regmap_cfg = {
 150         .reg_bits               = 8,
 151         .val_bits               = 8,
 152         .max_register           = 0x16,
 153         .reg_defaults           = ak4613_reg,
 154         .num_reg_defaults       = ARRAY_SIZE(ak4613_reg),
 155         .cache_type             = REGCACHE_RBTREE,
 156 };
 157
 158 static const struct of_device_id ak4613_of_match[] = {
 159         { .compatible = "asahi-kasei,ak4613",   .data = &ak4613_regmap_cfg },
 160         {},
 161 };
 162 MODULE_DEVICE_TABLE(of, ak4613_of_match);
 163
 164 static const struct i2c_device_id ak4613_i2c_id[] = {
 165         { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
 166         { }
 167 };
 168 MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
 169
 170 static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
 171
 172         /* Outputs */
 173         SND_SOC_DAPM_OUTPUT("LOUT1"),
 174         SND_SOC_DAPM_OUTPUT("LOUT2"),
 175         SND_SOC_DAPM_OUTPUT("LOUT3"),
 176         SND_SOC_DAPM_OUTPUT("LOUT4"),
 177         SND_SOC_DAPM_OUTPUT("LOUT5"),
 178         SND_SOC_DAPM_OUTPUT("LOUT6"),
 179
 180         SND_SOC_DAPM_OUTPUT("ROUT1"),
 181         SND_SOC_DAPM_OUTPUT("ROUT2"),
 182         SND_SOC_DAPM_OUTPUT("ROUT3"),
 183         SND_SOC_DAPM_OUTPUT("ROUT4"),
 184         SND_SOC_DAPM_OUTPUT("ROUT5"),
 185         SND_SOC_DAPM_OUTPUT("ROUT6"),
 186
 187         /* Inputs */
 188         SND_SOC_DAPM_INPUT("LIN1"),
 189         SND_SOC_DAPM_INPUT("LIN2"),
 190
 191         SND_SOC_DAPM_INPUT("RIN1"),
 192         SND_SOC_DAPM_INPUT("RIN2"),
 193
 194         /* DAC */
 195         SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
 196         SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
 197         SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
 198         SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
 199         SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
 200         SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
 201
 202         /* ADC */
 203         SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
 204         SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
 205 };
 206
 207 static const struct snd_soc_dapm_route ak4613_intercon[] = {
 208         {"LOUT1", NULL, "DAC1"},
 209         {"LOUT2", NULL, "DAC2"},
 210         {"LOUT3", NULL, "DAC3"},
 211         {"LOUT4", NULL, "DAC4"},
 212         {"LOUT5", NULL, "DAC5"},
 213         {"LOUT6", NULL, "DAC6"},
 214
 215         {"ROUT1", NULL, "DAC1"},
 216         {"ROUT2", NULL, "DAC2"},
 217         {"ROUT3", NULL, "DAC3"},
 218         {"ROUT4", NULL, "DAC4"},
 219         {"ROUT5", NULL, "DAC5"},
 220         {"ROUT6", NULL, "DAC6"},
 221
 222         {"DAC1", NULL, "Playback"},
 223         {"DAC2", NULL, "Playback"},
 224         {"DAC3", NULL, "Playback"},
 225         {"DAC4", NULL, "Playback"},
 226         {"DAC5", NULL, "Playback"},
 227         {"DAC6", NULL, "Playback"},
 228
 229         {"Capture", NULL, "ADC1"},
 230         {"Capture", NULL, "ADC2"},
 231
 232         {"ADC1", NULL, "LIN1"},
 233         {"ADC2", NULL, "LIN2"},
 234
 235         {"ADC1", NULL, "RIN1"},
 236         {"ADC2", NULL, "RIN2"},
 237 };
 238
 239 static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
 240                                struct snd_soc_dai *dai)
 241 {
 242         struct snd_soc_codec *codec = dai->codec;
 243         struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
 244         struct device *dev = codec->dev;
 245
 246         mutex_lock(&priv->lock);
 247         priv->cnt--;
 248         if (priv->cnt < 0) {
 249                 dev_err(dev, "unexpected counter error\n");
 250                 priv->cnt = 0;
 251         }
 252         if (!priv->cnt)
 253                 priv->iface = NULL;
 254         mutex_unlock(&priv->lock);
 255 }
 256
 257 static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 258 {
 259         struct snd_soc_codec *codec = dai->codec;
 260         struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
 261
 262         fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
 263
 264         switch (fmt) {
 265         case SND_SOC_DAIFMT_RIGHT_J:
 266         case SND_SOC_DAIFMT_LEFT_J:
 267         case SND_SOC_DAIFMT_I2S:
 268                 priv->fmt = fmt;
 269
 270                 break;
 271         default:
 272                 return -EINVAL;
 273         }
 274
 275         return 0;
 276 }
 277
 278 static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface,
 279                                     int is_play,
 280                                     unsigned int fmt, unsigned int width)
 281 {
 282         const struct ak4613_formats *fmts;
 283
 284         fmts = (is_play) ? &iface->playback : &iface->capture;
 285
 286         if (fmts->fmt != fmt)
 287                 return false;
 288
 289         if (fmt == SND_SOC_DAIFMT_RIGHT_J) {
 290                 if (fmts->width != width)
 291                         return false;
 292         } else {
 293                 if (fmts->width < width)
 294                         return false;
 295         }
 296
 297         return true;
 298 }
 299
 300 static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
 301                                 struct snd_pcm_hw_params *params,
 302                                 struct snd_soc_dai *dai)
 303 {
 304         struct snd_soc_codec *codec = dai->codec;
 305         struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec);
 306         const struct ak4613_interface *iface;
 307         struct device *dev = codec->dev;
 308         unsigned int width = params_width(params);
 309         unsigned int fmt = priv->fmt;
 310         unsigned int rate;
 311         int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 312         int i, ret;
 313         u8 fmt_ctrl, ctrl2;
 314
 315         rate = params_rate(params);
 316         switch (rate) {
 317         case 32000:
 318         case 44100:
 319         case 48000:
 320                 ctrl2 = DFS_NORMAL_SPEED;
 321                 break;
 322         case 88200:
 323         case 96000:
 324                 ctrl2 = DFS_DOUBLE_SPEED;
 325                 break;
 326         case 176400:
 327         case 192000:
 328                 ctrl2 = DFS_QUAD_SPEED;
 329                 break;
 330         default:
 331                 return -EINVAL;
 332         }
 333
 334         /*
 335          * FIXME
 336          *
 337          * It doesn't support TDM at this point
 338          */
 339         fmt_ctrl = NO_FMT;
 340         ret = -EINVAL;
 341         iface = NULL;
 342
 343         mutex_lock(&priv->lock);
 344         if (priv->iface) {
 345                 if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
 346                         iface = priv->iface;
 347         } else {
 348                 for (i = ARRAY_SIZE(ak4613_iface); i >= 0; i--) {
 349                         if (!ak4613_dai_fmt_matching(ak4613_iface + i,
 350                                                      is_play,
 351                                                      fmt, width))
 352                                 continue;
 353                         iface = ak4613_iface + i;
 354                         break;
 355                 }
 356         }
 357
 358         if ((priv->iface == NULL) ||
 359             (priv->iface == iface)) {
 360                 priv->iface = iface;
 361                 priv->cnt++;
 362                 ret = 0;
 363         }
 364         mutex_unlock(&priv->lock);
 365
 366         if (ret < 0)
 367                 goto hw_params_end;
 368
 369         fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);
 370
 371         snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl);
 372         snd_soc_update_bits(codec, CTRL2, DFS_MASK, ctrl2);
 373
 374         snd_soc_update_bits(codec, ICTRL, ICTRL_MASK, priv->ic);
 375         snd_soc_update_bits(codec, OCTRL, OCTRL_MASK, priv->oc);
 376
 377 hw_params_end:
 378         if (ret < 0)
 379                 dev_warn(dev, "unsupported data width/format combination\n");
 380
 381         return ret;
 382 }
 383
 384 static int ak4613_set_bias_level(struct snd_soc_codec *codec,
 385                                  enum snd_soc_bias_level level)
 386 {
 387         u8 mgmt1 = 0;
 388
 389         switch (level) {
 390         case SND_SOC_BIAS_ON:
 391                 mgmt1 |= RSTN;
 392                 /* fall through */
 393         case SND_SOC_BIAS_PREPARE:
 394                 mgmt1 |= PMADC | PMDAC;
 395                 /* fall through */
 396         case SND_SOC_BIAS_STANDBY:
 397                 mgmt1 |= PMVR;
 398                 /* fall through */
 399         case SND_SOC_BIAS_OFF:
 400         default:
 401                 break;
 402         }
 403
 404         snd_soc_write(codec, PW_MGMT1, mgmt1);
 405
 406         return 0;
 407 }
 408
 409 static const struct snd_soc_dai_ops ak4613_dai_ops = {
 410         .shutdown       = ak4613_dai_shutdown,
 411         .set_fmt        = ak4613_dai_set_fmt,
 412         .hw_params      = ak4613_dai_hw_params,
 413 };
 414
 415 #define AK4613_PCM_RATE         (SNDRV_PCM_RATE_32000  |\
 416                                  SNDRV_PCM_RATE_44100  |\
 417                                  SNDRV_PCM_RATE_48000  |\
 418                                  SNDRV_PCM_RATE_64000  |\
 419                                  SNDRV_PCM_RATE_88200  |\
 420                                  SNDRV_PCM_RATE_96000  |\
 421                                  SNDRV_PCM_RATE_176400 |\
 422                                  SNDRV_PCM_RATE_192000)
 423 #define AK4613_PCM_FMTBIT       (SNDRV_PCM_FMTBIT_S16_LE |\
 424                                  SNDRV_PCM_FMTBIT_S24_LE)
 425
 426 static struct snd_soc_dai_driver ak4613_dai = {
 427         .name = "ak4613-hifi",
 428         .playback = {
 429                 .stream_name    = "Playback",
 430                 .channels_min   = 2,
 431                 .channels_max   = 2,
 432                 .rates          = AK4613_PCM_RATE,
 433                 .formats        = AK4613_PCM_FMTBIT,
 434         },
 435         .capture = {
 436                 .stream_name    = "Capture",
 437                 .channels_min   = 2,
 438                 .channels_max   = 2,
 439                 .rates          = AK4613_PCM_RATE,
 440                 .formats        = AK4613_PCM_FMTBIT,
 441         },
 442         .ops = &ak4613_dai_ops,
 443         .symmetric_rates = 1,
 444 };
 445
 446 static int ak4613_suspend(struct snd_soc_codec *codec)
 447 {
 448         struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
 449
 450         regcache_cache_only(regmap, true);
 451         regcache_mark_dirty(regmap);
 452         return 0;
 453 }
 454
 455 static int ak4613_resume(struct snd_soc_codec *codec)
 456 {
 457         struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
 458
 459         regcache_cache_only(regmap, false);
 460         return regcache_sync(regmap);
 461 }
 462
 463 static struct snd_soc_codec_driver soc_codec_dev_ak4613 = {
 464         .suspend                = ak4613_suspend,
 465         .resume                 = ak4613_resume,
 466         .set_bias_level         = ak4613_set_bias_level,
 467         .component_driver = {
 468                 .controls               = ak4613_snd_controls,
 469                 .num_controls           = ARRAY_SIZE(ak4613_snd_controls),
 470                 .dapm_widgets           = ak4613_dapm_widgets,
 471                 .num_dapm_widgets       = ARRAY_SIZE(ak4613_dapm_widgets),
 472                 .dapm_routes            = ak4613_intercon,
 473                 .num_dapm_routes        = ARRAY_SIZE(ak4613_intercon),
 474         },
 475 };
 476
 477 static void ak4613_parse_of(struct ak4613_priv *priv,
 478                             struct device *dev)
 479 {
 480         struct device_node *np = dev->of_node;
 481         char prop[32];
 482         int i;
 483
 484         /* Input 1 - 2 */
 485         for (i = 0; i < 2; i++) {
 486                 snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
 487                 if (!of_get_property(np, prop, NULL))
 488                         priv->ic |= 1 << i;
 489         }
 490
 491         /* Output 1 - 6 */
 492         for (i = 0; i < 6; i++) {
 493                 snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
 494                 if (!of_get_property(np, prop, NULL))
 495                         priv->oc |= 1 << i;
 496         }
 497 }
 498
 499 static int ak4613_i2c_probe(struct i2c_client *i2c,
 500                             const struct i2c_device_id *id)
 501 {
 502         struct device *dev = &i2c->dev;
 503         struct device_node *np = dev->of_node;
 504         const struct regmap_config *regmap_cfg;
 505         struct regmap *regmap;
 506         struct ak4613_priv *priv;
 507
 508         regmap_cfg = NULL;
 509         if (np) {
 510                 const struct of_device_id *of_id;
 511
 512                 of_id = of_match_device(ak4613_of_match, dev);
 513                 if (of_id)
 514                         regmap_cfg = of_id->data;
 515         } else {
 516                 regmap_cfg = (const struct regmap_config *)id->driver_data;
 517         }
 518
 519         if (!regmap_cfg)
 520                 return -EINVAL;
 521
 522         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 523         if (!priv)
 524                 return -ENOMEM;
 525
 526         ak4613_parse_of(priv, dev);
 527
 528         priv->iface             = NULL;
 529         priv->cnt               = 0;
 530
 531         mutex_init(&priv->lock);
 532
 533         i2c_set_clientdata(i2c, priv);
 534
 535         regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
 536         if (IS_ERR(regmap))
 537                 return PTR_ERR(regmap);
 538
 539         return snd_soc_register_codec(dev, &soc_codec_dev_ak4613,
 540                                       &ak4613_dai, 1);
 541 }
 542
 543 static int ak4613_i2c_remove(struct i2c_client *client)
 544 {
 545         snd_soc_unregister_codec(&client->dev);
 546         return 0;
 547 }
 548
 549 static struct i2c_driver ak4613_i2c_driver = {
 550         .driver = {
 551                 .name = "ak4613-codec",
 552                 .of_match_table = ak4613_of_match,
 553         },
 554         .probe          = ak4613_i2c_probe,
 555         .remove         = ak4613_i2c_remove,
 556         .id_table       = ak4613_i2c_id,
 557 };
 558
 559 module_i2c_driver(ak4613_i2c_driver);
 560
 561 MODULE_DESCRIPTION("Soc AK4613 driver");
 562 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
 563 MODULE_LICENSE("GPL v2");