sound/soc/codecs/da7210.c

   1 /*
   2  * DA7210 ALSA Soc codec driver
   3  *
   4  * Copyright (c) 2009 Dialog Semiconductor
   5  * Written by David Chen <Dajun.chen@diasemi.com>
   6  *
   7  * Copyright (C) 2009 Renesas Solutions Corp.
   8  * Cleanups by Kuninori Morimoto <morimoto.kuninori@renesas.com>
   9  *
  10  * Tested on SuperH Ecovec24 board with S16/S24 LE in 48KHz using I2S
  11  *
  12  * This program is free software; you can redistribute  it and/or modify it
  13  * under  the terms of  the GNU General  Public License as published by the
  14  * Free Software Foundation;  either version 2 of the  License, or (at your
  15  * option) any later version.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/moduleparam.h>
  20 #include <linux/kernel.h>
  21 #include <linux/init.h>
  22 #include <linux/delay.h>
  23 #include <linux/pm.h>
  24 #include <linux/i2c.h>
  25 #include <linux/platform_device.h>
  26 #include <sound/core.h>
  27 #include <sound/pcm.h>
  28 #include <sound/pcm_params.h>
  29 #include <sound/soc.h>
  30 #include <sound/soc-dapm.h>
  31 #include <sound/tlv.h>
  32 #include <sound/initval.h>
  33 #include <asm/div64.h>
  34
  35 #include "da7210.h"
  36
  37 /* DA7210 register space */
  38 #define DA7210_STATUS                   0x02
  39 #define DA7210_STARTUP1                 0x03
  40 #define DA7210_MIC_L                    0x07
  41 #define DA7210_MIC_R                    0x08
  42 #define DA7210_INMIX_L                  0x0D
  43 #define DA7210_INMIX_R                  0x0E
  44 #define DA7210_ADC_HPF                  0x0F
  45 #define DA7210_ADC                      0x10
  46 #define DA7210_DAC_HPF                  0x14
  47 #define DA7210_DAC_L                    0x15
  48 #define DA7210_DAC_R                    0x16
  49 #define DA7210_DAC_SEL                  0x17
  50 #define DA7210_OUTMIX_L                 0x1C
  51 #define DA7210_OUTMIX_R                 0x1D
  52 #define DA7210_HP_L_VOL                 0x21
  53 #define DA7210_HP_R_VOL                 0x22
  54 #define DA7210_HP_CFG                   0x23
  55 #define DA7210_DAI_SRC_SEL              0x25
  56 #define DA7210_DAI_CFG1                 0x26
  57 #define DA7210_DAI_CFG3                 0x28
  58 #define DA7210_PLL_DIV3                 0x2B
  59 #define DA7210_PLL                      0x2C
  60
  61 /* STARTUP1 bit fields */
  62 #define DA7210_SC_MST_EN                (1 << 0)
  63
  64 /* MIC_L bit fields */
  65 #define DA7210_MICBIAS_EN               (1 << 6)
  66 #define DA7210_MIC_L_EN                 (1 << 7)
  67
  68 /* MIC_R bit fields */
  69 #define DA7210_MIC_R_EN                 (1 << 7)
  70
  71 /* INMIX_L bit fields */
  72 #define DA7210_IN_L_EN                  (1 << 7)
  73
  74 /* INMIX_R bit fields */
  75 #define DA7210_IN_R_EN                  (1 << 7)
  76
  77 /* ADC_HPF bit fields */
  78 #define DA7210_ADC_VOICE_EN             (1 << 7)
  79
  80 /* ADC bit fields */
  81 #define DA7210_ADC_L_EN                 (1 << 3)
  82 #define DA7210_ADC_R_EN                 (1 << 7)
  83
  84 /* DAC_SEL bit fields */
  85 #define DA7210_DAC_L_SRC_DAI_L          (4 << 0)
  86 #define DA7210_DAC_L_EN                 (1 << 3)
  87 #define DA7210_DAC_R_SRC_DAI_R          (5 << 4)
  88 #define DA7210_DAC_R_EN                 (1 << 7)
  89
  90 /* OUTMIX_L bit fields */
  91 #define DA7210_OUT_L_EN                 (1 << 7)
  92
  93 /* OUTMIX_R bit fields */
  94 #define DA7210_OUT_R_EN                 (1 << 7)
  95
  96 /* HP_CFG bit fields */
  97 #define DA7210_HP_2CAP_MODE             (1 << 1)
  98 #define DA7210_HP_SENSE_EN              (1 << 2)
  99 #define DA7210_HP_L_EN                  (1 << 3)
 100 #define DA7210_HP_MODE                  (1 << 6)
 101 #define DA7210_HP_R_EN                  (1 << 7)
 102
 103 /* DAI_SRC_SEL bit fields */
 104 #define DA7210_DAI_OUT_L_SRC            (6 << 0)
 105 #define DA7210_DAI_OUT_R_SRC            (7 << 4)
 106
 107 /* DAI_CFG1 bit fields */
 108 #define DA7210_DAI_WORD_S16_LE          (0 << 0)
 109 #define DA7210_DAI_WORD_S24_LE          (2 << 0)
 110 #define DA7210_DAI_FLEN_64BIT           (1 << 2)
 111 #define DA7210_DAI_MODE_MASTER          (1 << 7)
 112
 113 /* DAI_CFG3 bit fields */
 114 #define DA7210_DAI_FORMAT_I2SMODE       (0 << 0)
 115 #define DA7210_DAI_OE                   (1 << 3)
 116 #define DA7210_DAI_EN                   (1 << 7)
 117
 118 /*PLL_DIV3 bit fields */
 119 #define DA7210_MCLK_RANGE_10_20_MHZ     (1 << 4)
 120 #define DA7210_PLL_BYP                  (1 << 6)
 121
 122 /* PLL bit fields */
 123 #define DA7210_PLL_FS_48000             (11 << 0)
 124
 125 #define DA7210_VERSION "0.0.1"
 126
 127 /* Codec private data */
 128 struct da7210_priv {
 129         struct snd_soc_codec codec;
 130 };
 131
 132 static struct snd_soc_codec *da7210_codec;
 133
 134 /*
 135  * Register cache
 136  */
 137 static const u8 da7210_reg[] = {
 138         0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R0  - R7  */
 139         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, /* R8  - RF  */
 140         0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54, /* R10 - R17 */
 141         0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R18 - R1F */
 142         0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00, /* R20 - R27 */
 143         0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00, /* R28 - R2F */
 144         0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, /* R30 - R37 */
 145         0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, /* R38 - R3F */
 146         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R40 - R4F */
 147         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R48 - R4F */
 148         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R50 - R57 */
 149         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R58 - R5F */
 150         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R60 - R67 */
 151         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R68 - R6F */
 152         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R70 - R77 */
 153         0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00, /* R78 - R7F */
 154         0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, /* R80 - R87 */
 155         0x00,                                           /* R88       */
 156 };
 157
 158 /*
 159  * Read da7210 register cache
 160  */
 161 static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
 162 {
 163         u8 *cache = codec->reg_cache;
 164         BUG_ON(reg > ARRAY_SIZE(da7210_reg));
 165         return cache[reg];
 166 }
 167
 168 /*
 169  * Write to the da7210 register space
 170  */
 171 static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
 172 {
 173         u8 *cache = codec->reg_cache;
 174         u8 data[2];
 175
 176         BUG_ON(codec->volatile_register);
 177
 178         data[0] = reg & 0xff;
 179         data[1] = value & 0xff;
 180
 181         if (reg >= codec->reg_cache_size)
 182                 return -EIO;
 183
 184         if (2 != codec->hw_write(codec->control_data, data, 2))
 185                 return -EIO;
 186
 187         cache[reg] = value;
 188         return 0;
 189 }
 190
 191 /*
 192  * Read from the da7210 register space.
 193  */
 194 static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
 195 {
 196         if (DA7210_STATUS == reg)
 197                 return i2c_smbus_read_byte_data(codec->control_data, reg);
 198
 199         return da7210_read_reg_cache(codec, reg);
 200 }
 201
 202 static int da7210_startup(struct snd_pcm_substream *substream,
 203                           struct snd_soc_dai *dai)
 204 {
 205         int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 206         struct snd_soc_codec *codec = dai->codec;
 207
 208         if (is_play) {
 209                 /* PlayBack Volume 40 */
 210                 snd_soc_update_bits(codec, DA7210_HP_L_VOL, 0x3F, 40);
 211                 snd_soc_update_bits(codec, DA7210_HP_R_VOL, 0x3F, 40);
 212
 213                 /* Enable Out */
 214                 snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
 215                 snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);
 216
 217         } else {
 218                 /* Volume 7 */
 219                 snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
 220                 snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);
 221
 222                 /* Enable Mic */
 223                 snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
 224                 snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
 225         }
 226
 227         return 0;
 228 }
 229
 230 /*
 231  * Set PCM DAI word length.
 232  */
 233 static int da7210_hw_params(struct snd_pcm_substream *substream,
 234                             struct snd_pcm_hw_params *params,
 235                             struct snd_soc_dai *dai)
 236 {
 237         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 238         struct snd_soc_device *socdev = rtd->socdev;
 239         struct snd_soc_codec *codec = socdev->card->codec;
 240         u32 dai_cfg1;
 241         u32 reg, mask;
 242
 243         /* set DAI source to Left and Right ADC */
 244         da7210_write(codec, DA7210_DAI_SRC_SEL,
 245                      DA7210_DAI_OUT_R_SRC | DA7210_DAI_OUT_L_SRC);
 246
 247         /* Enable DAI */
 248         da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE | DA7210_DAI_EN);
 249
 250         dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);
 251
 252         switch (params_format(params)) {
 253         case SNDRV_PCM_FORMAT_S16_LE:
 254                 dai_cfg1 |= DA7210_DAI_WORD_S16_LE;
 255                 break;
 256         case SNDRV_PCM_FORMAT_S24_LE:
 257                 dai_cfg1 |= DA7210_DAI_WORD_S24_LE;
 258                 break;
 259         default:
 260                 return -EINVAL;
 261         }
 262
 263         da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
 264
 265         /* FIXME
 266          *
 267          * It support 48K only now
 268          */
 269         switch (params_rate(params)) {
 270         case 48000:
 271                 if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
 272                         reg  = DA7210_DAC_HPF;
 273                         mask = DA7210_DAC_VOICE_EN;
 274                 } else {
 275                         reg  = DA7210_ADC_HPF;
 276                         mask = DA7210_ADC_VOICE_EN;
 277                 }
 278                 break;
 279         default:
 280                 return -EINVAL;
 281         }
 282
 283         snd_soc_update_bits(codec, reg, mask, 0);
 284
 285         return 0;
 286 }
 287
 288 /*
 289  * Set DAI mode and Format
 290  */
 291 static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
 292 {
 293         struct snd_soc_codec *codec = codec_dai->codec;
 294         u32 dai_cfg1;
 295         u32 dai_cfg3;
 296
 297         dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
 298         dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);
 299
 300         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 301         case SND_SOC_DAIFMT_CBM_CFM:
 302                 dai_cfg1 |= DA7210_DAI_MODE_MASTER;
 303                 break;
 304         default:
 305                 return -EINVAL;
 306         }
 307
 308         /* FIXME
 309          *
 310          * It support I2S only now
 311          */
 312         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 313         case SND_SOC_DAIFMT_I2S:
 314                 dai_cfg3 |= DA7210_DAI_FORMAT_I2SMODE;
 315                 break;
 316         default:
 317                 return -EINVAL;
 318         }
 319
 320         /* FIXME
 321          *
 322          * It support 64bit data transmission only now
 323          */
 324         dai_cfg1 |= DA7210_DAI_FLEN_64BIT;
 325
 326         da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
 327         da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);
 328
 329         return 0;
 330 }
 331
 332 #define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)
 333
 334 /* DAI operations */
 335 static struct snd_soc_dai_ops da7210_dai_ops = {
 336         .startup        = da7210_startup,
 337         .hw_params      = da7210_hw_params,
 338         .set_fmt        = da7210_set_dai_fmt,
 339 };
 340
 341 struct snd_soc_dai da7210_dai = {
 342         .name = "DA7210 IIS",
 343         .id = 0,
 344         /* playback capabilities */
 345         .playback = {
 346                 .stream_name = "Playback",
 347                 .channels_min = 1,
 348                 .channels_max = 2,
 349                 .rates = SNDRV_PCM_RATE_8000_96000,
 350                 .formats = DA7210_FORMATS,
 351         },
 352         /* capture capabilities */
 353         .capture = {
 354                 .stream_name = "Capture",
 355                 .channels_min = 1,
 356                 .channels_max = 2,
 357                 .rates = SNDRV_PCM_RATE_8000_96000,
 358                 .formats = DA7210_FORMATS,
 359         },
 360         .ops = &da7210_dai_ops,
 361 };
 362 EXPORT_SYMBOL_GPL(da7210_dai);
 363
 364 /*
 365  * Initialize the DA7210 driver
 366  * register the mixer and dsp interfaces with the kernel
 367  */
 368 static int da7210_init(struct da7210_priv *da7210)
 369 {
 370         struct snd_soc_codec *codec = &da7210->codec;
 371         int ret = 0;
 372
 373         if (da7210_codec) {
 374                 dev_err(codec->dev, "Another da7210 is registered\n");
 375                 return -EINVAL;
 376         }
 377
 378         mutex_init(&codec->mutex);
 379         INIT_LIST_HEAD(&codec->dapm_widgets);
 380         INIT_LIST_HEAD(&codec->dapm_paths);
 381
 382         codec->private_data     = da7210;
 383         codec->name             = "DA7210";
 384         codec->owner            = THIS_MODULE;
 385         codec->read             = da7210_read;
 386         codec->write            = da7210_write;
 387         codec->dai              = &da7210_dai;
 388         codec->num_dai          = 1;
 389         codec->hw_write         = (hw_write_t)i2c_master_send;
 390         codec->reg_cache_size   = ARRAY_SIZE(da7210_reg);
 391         codec->reg_cache        = kmemdup(da7210_reg,
 392                                           sizeof(da7210_reg), GFP_KERNEL);
 393
 394         if (!codec->reg_cache)
 395                 return -ENOMEM;
 396
 397         da7210_dai.dev = codec->dev;
 398         da7210_codec = codec;
 399
 400         ret = snd_soc_register_codec(codec);
 401         if (ret) {
 402                 dev_err(codec->dev, "Failed to register CODEC: %d\n", ret);
 403                 goto init_err;
 404         }
 405
 406         ret = snd_soc_register_dai(&da7210_dai);
 407         if (ret) {
 408                 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
 409                 goto init_err;
 410         }
 411
 412         /* FIXME
 413          *
 414          * This driver use fixed value here
 415          */
 416
 417         /*
 418          * ADC settings
 419          */
 420
 421         /* Enable Left & Right MIC PGA and Mic Bias */
 422         da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN | DA7210_MICBIAS_EN);
 423         da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);
 424
 425         /* Enable Left and Right input PGA */
 426         da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
 427         da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);
 428
 429         /* Enable Left and Right ADC */
 430         da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN | DA7210_ADC_R_EN);
 431
 432         /*
 433          * DAC settings
 434          */
 435
 436         /* Enable Left and Right DAC */
 437         da7210_write(codec, DA7210_DAC_SEL,
 438                      DA7210_DAC_L_SRC_DAI_L | DA7210_DAC_L_EN |
 439                      DA7210_DAC_R_SRC_DAI_R | DA7210_DAC_R_EN);
 440
 441         /* Enable Left and Right out PGA */
 442         da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
 443         da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);
 444
 445         /* Enable Left and Right HeadPhone PGA */
 446         da7210_write(codec, DA7210_HP_CFG,
 447                      DA7210_HP_2CAP_MODE | DA7210_HP_SENSE_EN |
 448                      DA7210_HP_L_EN | DA7210_HP_MODE | DA7210_HP_R_EN);
 449
 450         /* Diable PLL and bypass it */
 451         da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
 452
 453         /* Bypass PLL and set MCLK freq rang to 10-20MHz */
 454         da7210_write(codec, DA7210_PLL_DIV3,
 455                      DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);
 456
 457         /* Activate all enabled subsystem */
 458         da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);
 459
 460         return ret;
 461
 462 init_err:
 463         kfree(codec->reg_cache);
 464         codec->reg_cache = NULL;
 465
 466         return ret;
 467
 468 }
 469
 470 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 471 static int da7210_i2c_probe(struct i2c_client *i2c,
 472                             const struct i2c_device_id *id)
 473 {
 474         struct da7210_priv *da7210;
 475         struct snd_soc_codec *codec;
 476         int ret;
 477
 478         da7210 = kzalloc(sizeof(struct da7210_priv), GFP_KERNEL);
 479         if (!da7210)
 480                 return -ENOMEM;
 481
 482         codec = &da7210->codec;
 483         codec->dev = &i2c->dev;
 484
 485         i2c_set_clientdata(i2c, da7210);
 486         codec->control_data = i2c;
 487
 488         ret = da7210_init(da7210);
 489         if (ret < 0)
 490                 pr_err("Failed to initialise da7210 audio codec\n");
 491
 492         return ret;
 493 }
 494
 495 static int da7210_i2c_remove(struct i2c_client *client)
 496 {
 497         struct da7210_priv *da7210 = i2c_get_clientdata(client);
 498
 499         snd_soc_unregister_dai(&da7210_dai);
 500         kfree(da7210->codec.reg_cache);
 501         kfree(da7210);
 502         da7210_codec = NULL;
 503
 504         return 0;
 505 }
 506
 507 static const struct i2c_device_id da7210_i2c_id[] = {
 508         { "da7210", 0 },
 509         { }
 510 };
 511 MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);
 512
 513 /* I2C codec control layer */
 514 static struct i2c_driver da7210_i2c_driver = {
 515         .driver = {
 516                 .name = "DA7210 I2C Codec",
 517                 .owner = THIS_MODULE,
 518         },
 519         .probe = da7210_i2c_probe,
 520         .remove =  __devexit_p(da7210_i2c_remove),
 521         .id_table = da7210_i2c_id,
 522 };
 523 #endif
 524
 525 static int da7210_probe(struct platform_device *pdev)
 526 {
 527         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 528         struct snd_soc_codec *codec;
 529         int ret;
 530
 531         if (!da7210_codec) {
 532                 dev_err(&pdev->dev, "Codec device not registered\n");
 533                 return -ENODEV;
 534         }
 535
 536         socdev->card->codec = da7210_codec;
 537         codec = da7210_codec;
 538
 539         /* Register pcms */
 540         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 541         if (ret < 0)
 542                 goto pcm_err;
 543
 544         dev_info(&pdev->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
 545
 546 pcm_err:
 547         return ret;
 548 }
 549
 550 static int da7210_remove(struct platform_device *pdev)
 551 {
 552         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 553
 554         snd_soc_free_pcms(socdev);
 555         snd_soc_dapm_free(socdev);
 556
 557         return 0;
 558 }
 559
 560 struct snd_soc_codec_device soc_codec_dev_da7210 = {
 561         .probe =        da7210_probe,
 562         .remove =       da7210_remove,
 563 };
 564 EXPORT_SYMBOL_GPL(soc_codec_dev_da7210);
 565
 566 static int __init da7210_modinit(void)
 567 {
 568         int ret = 0;
 569 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 570         ret = i2c_add_driver(&da7210_i2c_driver);
 571 #endif
 572         return ret;
 573 }
 574 module_init(da7210_modinit);
 575
 576 static void __exit da7210_exit(void)
 577 {
 578 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 579         i2c_del_driver(&da7210_i2c_driver);
 580 #endif
 581 }
 582 module_exit(da7210_exit);
 583
 584 MODULE_DESCRIPTION("ASoC DA7210 driver");
 585 MODULE_AUTHOR("David Chen, Kuninori Morimoto");
 586 MODULE_LICENSE("GPL");