sound/soc/codecs/ak4642.c

   1 /*
   2  * ak4642.c  --  AK4642/AK4643 ALSA Soc Audio driver
   3  *
   4  * Copyright (C) 2009 Renesas Solutions Corp.
   5  * Kuninori Morimoto <morimoto.kuninori@renesas.com>
   6  *
   7  * Based on wm8731.c by Richard Purdie
   8  * Based on ak4535.c by Richard Purdie
   9  * Based on wm8753.c by Liam Girdwood
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 /* ** CAUTION **
  17  *
  18  * This is very simple driver.
  19  * It can use headphone output / stereo input only
  20  *
  21  * AK4642 is tested.
  22  * AK4643 is tested.
  23  * AK4648 is tested.
  24  */
  25
  26 #include <linux/delay.h>
  27 #include <linux/i2c.h>
  28 #include <linux/slab.h>
  29 #include <linux/of_device.h>
  30 #include <linux/module.h>
  31 #include <sound/soc.h>
  32 #include <sound/initval.h>
  33 #include <sound/tlv.h>
  34
  35 #define PW_MGMT1        0x00
  36 #define PW_MGMT2        0x01
  37 #define SG_SL1          0x02
  38 #define SG_SL2          0x03
  39 #define MD_CTL1         0x04
  40 #define MD_CTL2         0x05
  41 #define TIMER           0x06
  42 #define ALC_CTL1        0x07
  43 #define ALC_CTL2        0x08
  44 #define L_IVC           0x09
  45 #define L_DVC           0x0a
  46 #define ALC_CTL3        0x0b
  47 #define R_IVC           0x0c
  48 #define R_DVC           0x0d
  49 #define MD_CTL3         0x0e
  50 #define MD_CTL4         0x0f
  51 #define PW_MGMT3        0x10
  52 #define DF_S            0x11
  53 #define FIL3_0          0x12
  54 #define FIL3_1          0x13
  55 #define FIL3_2          0x14
  56 #define FIL3_3          0x15
  57 #define EQ_0            0x16
  58 #define EQ_1            0x17
  59 #define EQ_2            0x18
  60 #define EQ_3            0x19
  61 #define EQ_4            0x1a
  62 #define EQ_5            0x1b
  63 #define FIL1_0          0x1c
  64 #define FIL1_1          0x1d
  65 #define FIL1_2          0x1e
  66 #define FIL1_3          0x1f
  67 #define PW_MGMT4        0x20
  68 #define MD_CTL5         0x21
  69 #define LO_MS           0x22
  70 #define HP_MS           0x23
  71 #define SPK_MS          0x24
  72
  73 /* PW_MGMT1*/
  74 #define PMVCM           (1 << 6) /* VCOM Power Management */
  75 #define PMMIN           (1 << 5) /* MIN Input Power Management */
  76 #define PMDAC           (1 << 2) /* DAC Power Management */
  77 #define PMADL           (1 << 0) /* MIC Amp Lch and ADC Lch Power Management */
  78
  79 /* PW_MGMT2 */
  80 #define HPMTN           (1 << 6)
  81 #define PMHPL           (1 << 5)
  82 #define PMHPR           (1 << 4)
  83 #define MS              (1 << 3) /* master/slave select */
  84 #define MCKO            (1 << 1)
  85 #define PMPLL           (1 << 0)
  86
  87 #define PMHP_MASK       (PMHPL | PMHPR)
  88 #define PMHP            PMHP_MASK
  89
  90 /* PW_MGMT3 */
  91 #define PMADR           (1 << 0) /* MIC L / ADC R Power Management */
  92
  93 /* SG_SL1 */
  94 #define MINS            (1 << 6) /* Switch from MIN to Speaker */
  95 #define DACL            (1 << 4) /* Switch from DAC to Stereo or Receiver */
  96 #define PMMP            (1 << 2) /* MPWR pin Power Management */
  97 #define MGAIN0          (1 << 0) /* MIC amp gain*/
  98
  99 /* TIMER */
 100 #define ZTM(param)      ((param & 0x3) << 4) /* ALC Zoro Crossing TimeOut */
 101 #define WTM(param)      (((param & 0x4) << 4) | ((param & 0x3) << 2))
 102
 103 /* ALC_CTL1 */
 104 #define ALC             (1 << 5) /* ALC Enable */
 105 #define LMTH0           (1 << 0) /* ALC Limiter / Recovery Level */
 106
 107 /* MD_CTL1 */
 108 #define PLL3            (1 << 7)
 109 #define PLL2            (1 << 6)
 110 #define PLL1            (1 << 5)
 111 #define PLL0            (1 << 4)
 112 #define PLL_MASK        (PLL3 | PLL2 | PLL1 | PLL0)
 113
 114 #define BCKO_MASK       (1 << 3)
 115 #define BCKO_64         BCKO_MASK
 116
 117 #define DIF_MASK        (3 << 0)
 118 #define DSP             (0 << 0)
 119 #define RIGHT_J         (1 << 0)
 120 #define LEFT_J          (2 << 0)
 121 #define I2S             (3 << 0)
 122
 123 /* MD_CTL2 */
 124 #define FS0             (1 << 0)
 125 #define FS1             (1 << 1)
 126 #define FS2             (1 << 2)
 127 #define FS3             (1 << 5)
 128 #define FS_MASK         (FS0 | FS1 | FS2 | FS3)
 129
 130 /* MD_CTL3 */
 131 #define BST1            (1 << 3)
 132
 133 /* MD_CTL4 */
 134 #define DACH            (1 << 0)
 135
 136 /*
 137  * Playback Volume (table 39)
 138  *
 139  * max : 0x00 : +12.0 dB
 140  *       ( 0.5 dB step )
 141  * min : 0xFE : -115.0 dB
 142  * mute: 0xFF
 143  */
 144 static const DECLARE_TLV_DB_SCALE(out_tlv, -11550, 50, 1);
 145
 146 static const struct snd_kcontrol_new ak4642_snd_controls[] = {
 147
 148         SOC_DOUBLE_R_TLV("Digital Playback Volume", L_DVC, R_DVC,
 149                          0, 0xFF, 1, out_tlv),
 150 };
 151
 152 static const struct snd_kcontrol_new ak4642_headphone_control =
 153         SOC_DAPM_SINGLE("Switch", PW_MGMT2, 6, 1, 0);
 154
 155 static const struct snd_kcontrol_new ak4642_lout_mixer_controls[] = {
 156         SOC_DAPM_SINGLE("DACL", SG_SL1, 4, 1, 0),
 157 };
 158
 159 static const struct snd_soc_dapm_widget ak4642_dapm_widgets[] = {
 160
 161         /* Outputs */
 162         SND_SOC_DAPM_OUTPUT("HPOUTL"),
 163         SND_SOC_DAPM_OUTPUT("HPOUTR"),
 164         SND_SOC_DAPM_OUTPUT("LINEOUT"),
 165
 166         SND_SOC_DAPM_PGA("HPL Out", PW_MGMT2, 5, 0, NULL, 0),
 167         SND_SOC_DAPM_PGA("HPR Out", PW_MGMT2, 4, 0, NULL, 0),
 168         SND_SOC_DAPM_SWITCH("Headphone Enable", SND_SOC_NOPM, 0, 0,
 169                             &ak4642_headphone_control),
 170
 171         SND_SOC_DAPM_PGA("DACH", MD_CTL4, 0, 0, NULL, 0),
 172
 173         SND_SOC_DAPM_MIXER("LINEOUT Mixer", PW_MGMT1, 3, 0,
 174                            &ak4642_lout_mixer_controls[0],
 175                            ARRAY_SIZE(ak4642_lout_mixer_controls)),
 176
 177         /* DAC */
 178         SND_SOC_DAPM_DAC("DAC", "HiFi Playback", PW_MGMT1, 2, 0),
 179 };
 180
 181 static const struct snd_soc_dapm_route ak4642_intercon[] = {
 182
 183         /* Outputs */
 184         {"HPOUTL", NULL, "HPL Out"},
 185         {"HPOUTR", NULL, "HPR Out"},
 186         {"LINEOUT", NULL, "LINEOUT Mixer"},
 187
 188         {"HPL Out", NULL, "Headphone Enable"},
 189         {"HPR Out", NULL, "Headphone Enable"},
 190
 191         {"Headphone Enable", "Switch", "DACH"},
 192
 193         {"DACH", NULL, "DAC"},
 194
 195         {"LINEOUT Mixer", "DACL", "DAC"},
 196 };
 197
 198 /*
 199  * ak4642 register cache
 200  */
 201 static const u8 ak4642_reg[] = {
 202         0x00, 0x00, 0x01, 0x00,
 203         0x02, 0x00, 0x00, 0x00,
 204         0xe1, 0xe1, 0x18, 0x00,
 205         0xe1, 0x18, 0x11, 0x08,
 206         0x00, 0x00, 0x00, 0x00,
 207         0x00, 0x00, 0x00, 0x00,
 208         0x00, 0x00, 0x00, 0x00,
 209         0x00, 0x00, 0x00, 0x00,
 210         0x00, 0x00, 0x00, 0x00,
 211         0x00,
 212 };
 213
 214 static const u8 ak4648_reg[] = {
 215         0x00, 0x00, 0x01, 0x00,
 216         0x02, 0x00, 0x00, 0x00,
 217         0xe1, 0xe1, 0x18, 0x00,
 218         0xe1, 0x18, 0x11, 0xb8,
 219         0x00, 0x00, 0x00, 0x00,
 220         0x00, 0x00, 0x00, 0x00,
 221         0x00, 0x00, 0x00, 0x00,
 222         0x00, 0x00, 0x00, 0x00,
 223         0x00, 0x00, 0x00, 0x00,
 224         0x00, 0x88, 0x88, 0x08,
 225 };
 226
 227 static int ak4642_dai_startup(struct snd_pcm_substream *substream,
 228                               struct snd_soc_dai *dai)
 229 {
 230         int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 231         struct snd_soc_codec *codec = dai->codec;
 232
 233         if (is_play) {
 234                 /*
 235                  * start headphone output
 236                  *
 237                  * PLL, Master Mode
 238                  * Audio I/F Format :MSB justified (ADC & DAC)
 239                  * Bass Boost Level : Middle
 240                  *
 241                  * This operation came from example code of
 242                  * "ASAHI KASEI AK4642" (japanese) manual p97.
 243                  */
 244                 snd_soc_write(codec, L_IVC, 0x91); /* volume */
 245                 snd_soc_write(codec, R_IVC, 0x91); /* volume */
 246         } else {
 247                 /*
 248                  * start stereo input
 249                  *
 250                  * PLL Master Mode
 251                  * Audio I/F Format:MSB justified (ADC & DAC)
 252                  * Pre MIC AMP:+20dB
 253                  * MIC Power On
 254                  * ALC setting:Refer to Table 35
 255                  * ALC bit=“1”
 256                  *
 257                  * This operation came from example code of
 258                  * "ASAHI KASEI AK4642" (japanese) manual p94.
 259                  */
 260                 snd_soc_write(codec, SG_SL1, PMMP | MGAIN0);
 261                 snd_soc_write(codec, TIMER, ZTM(0x3) | WTM(0x3));
 262                 snd_soc_write(codec, ALC_CTL1, ALC | LMTH0);
 263                 snd_soc_update_bits(codec, PW_MGMT1, PMADL, PMADL);
 264                 snd_soc_update_bits(codec, PW_MGMT3, PMADR, PMADR);
 265         }
 266
 267         return 0;
 268 }
 269
 270 static void ak4642_dai_shutdown(struct snd_pcm_substream *substream,
 271                                struct snd_soc_dai *dai)
 272 {
 273         int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 274         struct snd_soc_codec *codec = dai->codec;
 275
 276         if (is_play) {
 277         } else {
 278                 /* stop stereo input */
 279                 snd_soc_update_bits(codec, PW_MGMT1, PMADL, 0);
 280                 snd_soc_update_bits(codec, PW_MGMT3, PMADR, 0);
 281                 snd_soc_update_bits(codec, ALC_CTL1, ALC, 0);
 282         }
 283 }
 284
 285 static int ak4642_dai_set_sysclk(struct snd_soc_dai *codec_dai,
 286         int clk_id, unsigned int freq, int dir)
 287 {
 288         struct snd_soc_codec *codec = codec_dai->codec;
 289         u8 pll;
 290
 291         switch (freq) {
 292         case 11289600:
 293                 pll = PLL2;
 294                 break;
 295         case 12288000:
 296                 pll = PLL2 | PLL0;
 297                 break;
 298         case 12000000:
 299                 pll = PLL2 | PLL1;
 300                 break;
 301         case 24000000:
 302                 pll = PLL2 | PLL1 | PLL0;
 303                 break;
 304         case 13500000:
 305                 pll = PLL3 | PLL2;
 306                 break;
 307         case 27000000:
 308                 pll = PLL3 | PLL2 | PLL0;
 309                 break;
 310         default:
 311                 return -EINVAL;
 312         }
 313         snd_soc_update_bits(codec, MD_CTL1, PLL_MASK, pll);
 314
 315         return 0;
 316 }
 317
 318 static int ak4642_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 319 {
 320         struct snd_soc_codec *codec = dai->codec;
 321         u8 data;
 322         u8 bcko;
 323
 324         data = MCKO | PMPLL; /* use MCKO */
 325         bcko = 0;
 326
 327         /* set master/slave audio interface */
 328         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 329         case SND_SOC_DAIFMT_CBM_CFM:
 330                 data |= MS;
 331                 bcko = BCKO_64;
 332                 break;
 333         case SND_SOC_DAIFMT_CBS_CFS:
 334                 break;
 335         default:
 336                 return -EINVAL;
 337         }
 338         snd_soc_update_bits(codec, PW_MGMT2, MS | MCKO | PMPLL, data);
 339         snd_soc_update_bits(codec, MD_CTL1, BCKO_MASK, bcko);
 340
 341         /* format type */
 342         data = 0;
 343         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 344         case SND_SOC_DAIFMT_LEFT_J:
 345                 data = LEFT_J;
 346                 break;
 347         case SND_SOC_DAIFMT_I2S:
 348                 data = I2S;
 349                 break;
 350         /* FIXME
 351          * Please add RIGHT_J / DSP support here
 352          */
 353         default:
 354                 return -EINVAL;
 355                 break;
 356         }
 357         snd_soc_update_bits(codec, MD_CTL1, DIF_MASK, data);
 358
 359         return 0;
 360 }
 361
 362 static int ak4642_dai_hw_params(struct snd_pcm_substream *substream,
 363                                 struct snd_pcm_hw_params *params,
 364                                 struct snd_soc_dai *dai)
 365 {
 366         struct snd_soc_codec *codec = dai->codec;
 367         u8 rate;
 368
 369         switch (params_rate(params)) {
 370         case 7350:
 371                 rate = FS2;
 372                 break;
 373         case 8000:
 374                 rate = 0;
 375                 break;
 376         case 11025:
 377                 rate = FS2 | FS0;
 378                 break;
 379         case 12000:
 380                 rate = FS0;
 381                 break;
 382         case 14700:
 383                 rate = FS2 | FS1;
 384                 break;
 385         case 16000:
 386                 rate = FS1;
 387                 break;
 388         case 22050:
 389                 rate = FS2 | FS1 | FS0;
 390                 break;
 391         case 24000:
 392                 rate = FS1 | FS0;
 393                 break;
 394         case 29400:
 395                 rate = FS3 | FS2 | FS1;
 396                 break;
 397         case 32000:
 398                 rate = FS3 | FS1;
 399                 break;
 400         case 44100:
 401                 rate = FS3 | FS2 | FS1 | FS0;
 402                 break;
 403         case 48000:
 404                 rate = FS3 | FS1 | FS0;
 405                 break;
 406         default:
 407                 return -EINVAL;
 408                 break;
 409         }
 410         snd_soc_update_bits(codec, MD_CTL2, FS_MASK, rate);
 411
 412         return 0;
 413 }
 414
 415 static int ak4642_set_bias_level(struct snd_soc_codec *codec,
 416                                  enum snd_soc_bias_level level)
 417 {
 418         switch (level) {
 419         case SND_SOC_BIAS_OFF:
 420                 snd_soc_write(codec, PW_MGMT1, 0x00);
 421                 break;
 422         default:
 423                 snd_soc_update_bits(codec, PW_MGMT1, PMVCM, PMVCM);
 424                 break;
 425         }
 426         codec->dapm.bias_level = level;
 427
 428         return 0;
 429 }
 430
 431 static const struct snd_soc_dai_ops ak4642_dai_ops = {
 432         .startup        = ak4642_dai_startup,
 433         .shutdown       = ak4642_dai_shutdown,
 434         .set_sysclk     = ak4642_dai_set_sysclk,
 435         .set_fmt        = ak4642_dai_set_fmt,
 436         .hw_params      = ak4642_dai_hw_params,
 437 };
 438
 439 static struct snd_soc_dai_driver ak4642_dai = {
 440         .name = "ak4642-hifi",
 441         .playback = {
 442                 .stream_name = "Playback",
 443                 .channels_min = 1,
 444                 .channels_max = 2,
 445                 .rates = SNDRV_PCM_RATE_8000_48000,
 446                 .formats = SNDRV_PCM_FMTBIT_S16_LE },
 447         .capture = {
 448                 .stream_name = "Capture",
 449                 .channels_min = 1,
 450                 .channels_max = 2,
 451                 .rates = SNDRV_PCM_RATE_8000_48000,
 452                 .formats = SNDRV_PCM_FMTBIT_S16_LE },
 453         .ops = &ak4642_dai_ops,
 454         .symmetric_rates = 1,
 455 };
 456
 457 static int ak4642_resume(struct snd_soc_codec *codec)
 458 {
 459         snd_soc_cache_sync(codec);
 460         return 0;
 461 }
 462
 463
 464 static int ak4642_probe(struct snd_soc_codec *codec)
 465 {
 466         int ret;
 467
 468         ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C);
 469         if (ret < 0) {
 470                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 471                 return ret;
 472         }
 473
 474         snd_soc_add_codec_controls(codec, ak4642_snd_controls,
 475                              ARRAY_SIZE(ak4642_snd_controls));
 476
 477         ak4642_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 478
 479         return 0;
 480 }
 481
 482 static int ak4642_remove(struct snd_soc_codec *codec)
 483 {
 484         ak4642_set_bias_level(codec, SND_SOC_BIAS_OFF);
 485         return 0;
 486 }
 487
 488 static struct snd_soc_codec_driver soc_codec_dev_ak4642 = {
 489         .probe                  = ak4642_probe,
 490         .remove                 = ak4642_remove,
 491         .resume                 = ak4642_resume,
 492         .set_bias_level         = ak4642_set_bias_level,
 493         .reg_cache_default      = ak4642_reg,                   /* ak4642 reg */
 494         .reg_cache_size         = ARRAY_SIZE(ak4642_reg),       /* ak4642 reg */
 495         .reg_word_size          = sizeof(u8),
 496         .dapm_widgets           = ak4642_dapm_widgets,
 497         .num_dapm_widgets       = ARRAY_SIZE(ak4642_dapm_widgets),
 498         .dapm_routes            = ak4642_intercon,
 499         .num_dapm_routes        = ARRAY_SIZE(ak4642_intercon),
 500 };
 501
 502 static struct snd_soc_codec_driver soc_codec_dev_ak4648 = {
 503         .probe                  = ak4642_probe,
 504         .remove                 = ak4642_remove,
 505         .resume                 = ak4642_resume,
 506         .set_bias_level         = ak4642_set_bias_level,
 507         .reg_cache_default      = ak4648_reg,                   /* ak4648 reg */
 508         .reg_cache_size         = ARRAY_SIZE(ak4648_reg),       /* ak4648 reg */
 509         .reg_word_size          = sizeof(u8),
 510         .dapm_widgets           = ak4642_dapm_widgets,
 511         .num_dapm_widgets       = ARRAY_SIZE(ak4642_dapm_widgets),
 512         .dapm_routes            = ak4642_intercon,
 513         .num_dapm_routes        = ARRAY_SIZE(ak4642_intercon),
 514 };
 515
 516 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 517 static struct of_device_id ak4642_of_match[];
 518 static int ak4642_i2c_probe(struct i2c_client *i2c,
 519                             const struct i2c_device_id *id)
 520 {
 521         struct device_node *np = i2c->dev.of_node;
 522         const struct snd_soc_codec_driver *driver;
 523
 524         driver = NULL;
 525         if (np) {
 526                 const struct of_device_id *of_id;
 527
 528                 of_id = of_match_device(ak4642_of_match, &i2c->dev);
 529                 if (of_id)
 530                         driver = of_id->data;
 531         } else {
 532                 driver = (struct snd_soc_codec_driver *)id->driver_data;
 533         }
 534
 535         if (!driver) {
 536                 dev_err(&i2c->dev, "no driver\n");
 537                 return -EINVAL;
 538         }
 539
 540         return snd_soc_register_codec(&i2c->dev,
 541                                       driver, &ak4642_dai, 1);
 542 }
 543
 544 static int ak4642_i2c_remove(struct i2c_client *client)
 545 {
 546         snd_soc_unregister_codec(&client->dev);
 547         return 0;
 548 }
 549
 550 static struct of_device_id ak4642_of_match[] = {
 551         { .compatible = "asahi-kasei,ak4642",   .data = &soc_codec_dev_ak4642},
 552         { .compatible = "asahi-kasei,ak4643",   .data = &soc_codec_dev_ak4642},
 553         { .compatible = "asahi-kasei,ak4648",   .data = &soc_codec_dev_ak4648},
 554         {},
 555 };
 556 MODULE_DEVICE_TABLE(of, ak4642_of_match);
 557
 558 static const struct i2c_device_id ak4642_i2c_id[] = {
 559         { "ak4642", (kernel_ulong_t)&soc_codec_dev_ak4642 },
 560         { "ak4643", (kernel_ulong_t)&soc_codec_dev_ak4642 },
 561         { "ak4648", (kernel_ulong_t)&soc_codec_dev_ak4648 },
 562         { }
 563 };
 564 MODULE_DEVICE_TABLE(i2c, ak4642_i2c_id);
 565
 566 static struct i2c_driver ak4642_i2c_driver = {
 567         .driver = {
 568                 .name = "ak4642-codec",
 569                 .owner = THIS_MODULE,
 570                 .of_match_table = ak4642_of_match,
 571         },
 572         .probe          = ak4642_i2c_probe,
 573         .remove         = ak4642_i2c_remove,
 574         .id_table       = ak4642_i2c_id,
 575 };
 576 #endif
 577
 578 static int __init ak4642_modinit(void)
 579 {
 580         int ret = 0;
 581 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 582         ret = i2c_add_driver(&ak4642_i2c_driver);
 583 #endif
 584         return ret;
 585
 586 }
 587 module_init(ak4642_modinit);
 588
 589 static void __exit ak4642_exit(void)
 590 {
 591 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 592         i2c_del_driver(&ak4642_i2c_driver);
 593 #endif
 594
 595 }
 596 module_exit(ak4642_exit);
 597
 598 MODULE_DESCRIPTION("Soc AK4642 driver");
 599 MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>");
 600 MODULE_LICENSE("GPL");