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   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 <linux/slab.h>
  27 #include <sound/core.h>
  28 #include <sound/pcm.h>
  29 #include <sound/pcm_params.h>
  30 #include <sound/soc.h>
  31 #include <sound/soc-dapm.h>
  32 #include <sound/tlv.h>
  33 #include <sound/initval.h>
  34 #include <asm/div64.h>
  35
  36 #include "da7210.h"
  37
  38 /* DA7210 register space */
  39 #define DA7210_STATUS                   0x02
  40 #define DA7210_STARTUP1                 0x03
  41 #define DA7210_MIC_L                    0x07
  42 #define DA7210_MIC_R                    0x08
  43 #define DA7210_INMIX_L                  0x0D
  44 #define DA7210_INMIX_R                  0x0E
  45 #define DA7210_ADC_HPF                  0x0F
  46 #define DA7210_ADC                      0x10
  47 #define DA7210_DAC_HPF                  0x14
  48 #define DA7210_DAC_L                    0x15
  49 #define DA7210_DAC_R                    0x16
  50 #define DA7210_DAC_SEL                  0x17
  51 #define DA7210_OUTMIX_L                 0x1C
  52 #define DA7210_OUTMIX_R                 0x1D
  53 #define DA7210_HP_L_VOL                 0x21
  54 #define DA7210_HP_R_VOL                 0x22
  55 #define DA7210_HP_CFG                   0x23
  56 #define DA7210_DAI_SRC_SEL              0x25
  57 #define DA7210_DAI_CFG1                 0x26
  58 #define DA7210_DAI_CFG3                 0x28
  59 #define DA7210_PLL_DIV1                 0x29
  60 #define DA7210_PLL_DIV2                 0x2A
  61 #define DA7210_PLL_DIV3                 0x2B
  62 #define DA7210_PLL                      0x2C
  63 #define DA7210_A_HID_UNLOCK             0x8A
  64 #define DA7210_A_TEST_UNLOCK            0x8B
  65 #define DA7210_A_PLL1                   0x90
  66 #define DA7210_A_CP_MODE                0xA7
  67
  68 /* STARTUP1 bit fields */
  69 #define DA7210_SC_MST_EN                (1 << 0)
  70
  71 /* MIC_L bit fields */
  72 #define DA7210_MICBIAS_EN               (1 << 6)
  73 #define DA7210_MIC_L_EN                 (1 << 7)
  74
  75 /* MIC_R bit fields */
  76 #define DA7210_MIC_R_EN                 (1 << 7)
  77
  78 /* INMIX_L bit fields */
  79 #define DA7210_IN_L_EN                  (1 << 7)
  80
  81 /* INMIX_R bit fields */
  82 #define DA7210_IN_R_EN                  (1 << 7)
  83
  84 /* ADC bit fields */
  85 #define DA7210_ADC_L_EN                 (1 << 3)
  86 #define DA7210_ADC_R_EN                 (1 << 7)
  87
  88 /* DAC/ADC HPF fields */
  89 #define DA7210_VOICE_F0_MASK            (0x7 << 4)
  90 #define DA7210_VOICE_F0_25              (1 << 4)
  91 #define DA7210_VOICE_EN                 (1 << 7)
  92
  93 /* DAC_SEL bit fields */
  94 #define DA7210_DAC_L_SRC_DAI_L          (4 << 0)
  95 #define DA7210_DAC_L_EN                 (1 << 3)
  96 #define DA7210_DAC_R_SRC_DAI_R          (5 << 4)
  97 #define DA7210_DAC_R_EN                 (1 << 7)
  98
  99 /* OUTMIX_L bit fields */
 100 #define DA7210_OUT_L_EN                 (1 << 7)
 101
 102 /* OUTMIX_R bit fields */
 103 #define DA7210_OUT_R_EN                 (1 << 7)
 104
 105 /* HP_CFG bit fields */
 106 #define DA7210_HP_2CAP_MODE             (1 << 1)
 107 #define DA7210_HP_SENSE_EN              (1 << 2)
 108 #define DA7210_HP_L_EN                  (1 << 3)
 109 #define DA7210_HP_MODE                  (1 << 6)
 110 #define DA7210_HP_R_EN                  (1 << 7)
 111
 112 /* DAI_SRC_SEL bit fields */
 113 #define DA7210_DAI_OUT_L_SRC            (6 << 0)
 114 #define DA7210_DAI_OUT_R_SRC            (7 << 4)
 115
 116 /* DAI_CFG1 bit fields */
 117 #define DA7210_DAI_WORD_S16_LE          (0 << 0)
 118 #define DA7210_DAI_WORD_S24_LE          (2 << 0)
 119 #define DA7210_DAI_FLEN_64BIT           (1 << 2)
 120 #define DA7210_DAI_MODE_MASTER          (1 << 7)
 121
 122 /* DAI_CFG3 bit fields */
 123 #define DA7210_DAI_FORMAT_I2SMODE       (0 << 0)
 124 #define DA7210_DAI_OE                   (1 << 3)
 125 #define DA7210_DAI_EN                   (1 << 7)
 126
 127 /*PLL_DIV3 bit fields */
 128 #define DA7210_MCLK_RANGE_10_20_MHZ     (1 << 4)
 129 #define DA7210_PLL_BYP                  (1 << 6)
 130
 131 /* PLL bit fields */
 132 #define DA7210_PLL_FS_MASK              (0xF << 0)
 133 #define DA7210_PLL_FS_8000              (0x1 << 0)
 134 #define DA7210_PLL_FS_11025             (0x2 << 0)
 135 #define DA7210_PLL_FS_12000             (0x3 << 0)
 136 #define DA7210_PLL_FS_16000             (0x5 << 0)
 137 #define DA7210_PLL_FS_22050             (0x6 << 0)
 138 #define DA7210_PLL_FS_24000             (0x7 << 0)
 139 #define DA7210_PLL_FS_32000             (0x9 << 0)
 140 #define DA7210_PLL_FS_44100             (0xA << 0)
 141 #define DA7210_PLL_FS_48000             (0xB << 0)
 142 #define DA7210_PLL_FS_88200             (0xE << 0)
 143 #define DA7210_PLL_FS_96000             (0xF << 0)
 144 #define DA7210_PLL_EN                   (0x1 << 7)
 145
 146 #define DA7210_VERSION "0.0.1"
 147
 148 /* Codec private data */
 149 struct da7210_priv {
 150         struct snd_soc_codec codec;
 151 };
 152
 153 static struct snd_soc_codec *da7210_codec;
 154
 155 /*
 156  * Register cache
 157  */
 158 static const u8 da7210_reg[] = {
 159         0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R0  - R7  */
 160         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, /* R8  - RF  */
 161         0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54, /* R10 - R17 */
 162         0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R18 - R1F */
 163         0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00, /* R20 - R27 */
 164         0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00, /* R28 - R2F */
 165         0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, /* R30 - R37 */
 166         0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, /* R38 - R3F */
 167         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R40 - R4F */
 168         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R48 - R4F */
 169         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R50 - R57 */
 170         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R58 - R5F */
 171         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R60 - R67 */
 172         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R68 - R6F */
 173         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R70 - R77 */
 174         0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00, /* R78 - R7F */
 175         0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, /* R80 - R87 */
 176         0x00,                                           /* R88       */
 177 };
 178
 179 /*
 180  * Read da7210 register cache
 181  */
 182 static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
 183 {
 184         u8 *cache = codec->reg_cache;
 185         BUG_ON(reg >= ARRAY_SIZE(da7210_reg));
 186         return cache[reg];
 187 }
 188
 189 /*
 190  * Write to the da7210 register space
 191  */
 192 static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
 193 {
 194         u8 *cache = codec->reg_cache;
 195         u8 data[2];
 196
 197         BUG_ON(codec->volatile_register);
 198
 199         data[0] = reg & 0xff;
 200         data[1] = value & 0xff;
 201
 202         if (reg >= codec->reg_cache_size)
 203                 return -EIO;
 204
 205         if (2 != codec->hw_write(codec->control_data, data, 2))
 206                 return -EIO;
 207
 208         cache[reg] = value;
 209         return 0;
 210 }
 211
 212 /*
 213  * Read from the da7210 register space.
 214  */
 215 static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
 216 {
 217         if (DA7210_STATUS == reg)
 218                 return i2c_smbus_read_byte_data(codec->control_data, reg);
 219
 220         return da7210_read_reg_cache(codec, reg);
 221 }
 222
 223 static int da7210_startup(struct snd_pcm_substream *substream,
 224                           struct snd_soc_dai *dai)
 225 {
 226         int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 227         struct snd_soc_codec *codec = dai->codec;
 228
 229         if (is_play) {
 230                 /* PlayBack Volume 40 */
 231                 snd_soc_update_bits(codec, DA7210_HP_L_VOL, 0x3F, 40);
 232                 snd_soc_update_bits(codec, DA7210_HP_R_VOL, 0x3F, 40);
 233
 234                 /* Enable Out */
 235                 snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
 236                 snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);
 237
 238         } else {
 239                 /* Volume 7 */
 240                 snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
 241                 snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);
 242
 243                 /* Enable Mic */
 244                 snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
 245                 snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
 246         }
 247
 248         return 0;
 249 }
 250
 251 /*
 252  * Set PCM DAI word length.
 253  */
 254 static int da7210_hw_params(struct snd_pcm_substream *substream,
 255                             struct snd_pcm_hw_params *params,
 256                             struct snd_soc_dai *dai)
 257 {
 258         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 259         struct snd_soc_device *socdev = rtd->socdev;
 260         struct snd_soc_codec *codec = socdev->card->codec;
 261         u32 dai_cfg1;
 262         u32 hpf_reg, hpf_mask, hpf_value;
 263         u32 fs, bypass;
 264
 265         /* set DAI source to Left and Right ADC */
 266         da7210_write(codec, DA7210_DAI_SRC_SEL,
 267                      DA7210_DAI_OUT_R_SRC | DA7210_DAI_OUT_L_SRC);
 268
 269         /* Enable DAI */
 270         da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE | DA7210_DAI_EN);
 271
 272         dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);
 273
 274         switch (params_format(params)) {
 275         case SNDRV_PCM_FORMAT_S16_LE:
 276                 dai_cfg1 |= DA7210_DAI_WORD_S16_LE;
 277                 break;
 278         case SNDRV_PCM_FORMAT_S24_LE:
 279                 dai_cfg1 |= DA7210_DAI_WORD_S24_LE;
 280                 break;
 281         default:
 282                 return -EINVAL;
 283         }
 284
 285         da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
 286
 287         hpf_reg = (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) ?
 288                 DA7210_DAC_HPF : DA7210_ADC_HPF;
 289
 290         switch (params_rate(params)) {
 291         case 8000:
 292                 fs              = DA7210_PLL_FS_8000;
 293                 hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
 294                 hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
 295                 bypass          = DA7210_PLL_BYP;
 296                 break;
 297         case 11025:
 298                 fs              = DA7210_PLL_FS_11025;
 299                 hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
 300                 hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
 301                 bypass          = 0;
 302                 break;
 303         case 12000:
 304                 fs              = DA7210_PLL_FS_12000;
 305                 hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
 306                 hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
 307                 bypass          = DA7210_PLL_BYP;
 308                 break;
 309         case 16000:
 310                 fs              = DA7210_PLL_FS_16000;
 311                 hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
 312                 hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
 313                 bypass          = DA7210_PLL_BYP;
 314                 break;
 315         case 22050:
 316                 fs              = DA7210_PLL_FS_22050;
 317                 hpf_mask        = DA7210_VOICE_EN;
 318                 hpf_value       = 0;
 319                 bypass          = 0;
 320                 break;
 321         case 32000:
 322                 fs              = DA7210_PLL_FS_32000;
 323                 hpf_mask        = DA7210_VOICE_EN;
 324                 hpf_value       = 0;
 325                 bypass          = DA7210_PLL_BYP;
 326                 break;
 327         case 44100:
 328                 fs              = DA7210_PLL_FS_44100;
 329                 hpf_mask        = DA7210_VOICE_EN;
 330                 hpf_value       = 0;
 331                 bypass          = 0;
 332                 break;
 333         case 48000:
 334                 fs              = DA7210_PLL_FS_48000;
 335                 hpf_mask        = DA7210_VOICE_EN;
 336                 hpf_value       = 0;
 337                 bypass          = DA7210_PLL_BYP;
 338                 break;
 339         case 88200:
 340                 fs              = DA7210_PLL_FS_88200;
 341                 hpf_mask        = DA7210_VOICE_EN;
 342                 hpf_value       = 0;
 343                 bypass          = 0;
 344                 break;
 345         case 96000:
 346                 fs              = DA7210_PLL_FS_96000;
 347                 hpf_mask        = DA7210_VOICE_EN;
 348                 hpf_value       = 0;
 349                 bypass          = DA7210_PLL_BYP;
 350                 break;
 351         default:
 352                 return -EINVAL;
 353         }
 354
 355         /* Disable active mode */
 356         snd_soc_update_bits(codec, DA7210_STARTUP1, DA7210_SC_MST_EN, 0);
 357
 358         snd_soc_update_bits(codec, hpf_reg, hpf_mask, hpf_value);
 359         snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_FS_MASK, fs);
 360         snd_soc_update_bits(codec, DA7210_PLL_DIV3, DA7210_PLL_BYP, bypass);
 361
 362         /* Enable active mode */
 363         snd_soc_update_bits(codec, DA7210_STARTUP1,
 364                             DA7210_SC_MST_EN, DA7210_SC_MST_EN);
 365
 366         return 0;
 367 }
 368
 369 /*
 370  * Set DAI mode and Format
 371  */
 372 static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
 373 {
 374         struct snd_soc_codec *codec = codec_dai->codec;
 375         u32 dai_cfg1;
 376         u32 dai_cfg3;
 377
 378         dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
 379         dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);
 380
 381         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 382         case SND_SOC_DAIFMT_CBM_CFM:
 383                 dai_cfg1 |= DA7210_DAI_MODE_MASTER;
 384                 break;
 385         default:
 386                 return -EINVAL;
 387         }
 388
 389         /* FIXME
 390          *
 391          * It support I2S only now
 392          */
 393         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 394         case SND_SOC_DAIFMT_I2S:
 395                 dai_cfg3 |= DA7210_DAI_FORMAT_I2SMODE;
 396                 break;
 397         default:
 398                 return -EINVAL;
 399         }
 400
 401         /* FIXME
 402          *
 403          * It support 64bit data transmission only now
 404          */
 405         dai_cfg1 |= DA7210_DAI_FLEN_64BIT;
 406
 407         da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
 408         da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);
 409
 410         return 0;
 411 }
 412
 413 #define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)
 414
 415 /* DAI operations */
 416 static struct snd_soc_dai_ops da7210_dai_ops = {
 417         .startup        = da7210_startup,
 418         .hw_params      = da7210_hw_params,
 419         .set_fmt        = da7210_set_dai_fmt,
 420 };
 421
 422 struct snd_soc_dai da7210_dai = {
 423         .name = "DA7210 IIS",
 424         .id = 0,
 425         /* playback capabilities */
 426         .playback = {
 427                 .stream_name = "Playback",
 428                 .channels_min = 1,
 429                 .channels_max = 2,
 430                 .rates = SNDRV_PCM_RATE_8000_96000,
 431                 .formats = DA7210_FORMATS,
 432         },
 433         /* capture capabilities */
 434         .capture = {
 435                 .stream_name = "Capture",
 436                 .channels_min = 1,
 437                 .channels_max = 2,
 438                 .rates = SNDRV_PCM_RATE_8000_96000,
 439                 .formats = DA7210_FORMATS,
 440         },
 441         .ops = &da7210_dai_ops,
 442         .symmetric_rates = 1,
 443 };
 444 EXPORT_SYMBOL_GPL(da7210_dai);
 445
 446 /*
 447  * Initialize the DA7210 driver
 448  * register the mixer and dsp interfaces with the kernel
 449  */
 450 static int da7210_init(struct da7210_priv *da7210)
 451 {
 452         struct snd_soc_codec *codec = &da7210->codec;
 453         int ret = 0;
 454
 455         if (da7210_codec) {
 456                 dev_err(codec->dev, "Another da7210 is registered\n");
 457                 return -EINVAL;
 458         }
 459
 460         mutex_init(&codec->mutex);
 461         INIT_LIST_HEAD(&codec->dapm_widgets);
 462         INIT_LIST_HEAD(&codec->dapm_paths);
 463
 464         snd_soc_codec_set_drvdata(codec, da7210);
 465         codec->name             = "DA7210";
 466         codec->owner            = THIS_MODULE;
 467         codec->read             = da7210_read;
 468         codec->write            = da7210_write;
 469         codec->dai              = &da7210_dai;
 470         codec->num_dai          = 1;
 471         codec->hw_write         = (hw_write_t)i2c_master_send;
 472         codec->reg_cache_size   = ARRAY_SIZE(da7210_reg);
 473         codec->reg_cache        = kmemdup(da7210_reg,
 474                                           sizeof(da7210_reg), GFP_KERNEL);
 475
 476         if (!codec->reg_cache)
 477                 return -ENOMEM;
 478
 479         da7210_dai.dev = codec->dev;
 480         da7210_codec = codec;
 481
 482         ret = snd_soc_register_codec(codec);
 483         if (ret) {
 484                 dev_err(codec->dev, "Failed to register CODEC: %d\n", ret);
 485                 goto init_err;
 486         }
 487
 488         ret = snd_soc_register_dai(&da7210_dai);
 489         if (ret) {
 490                 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
 491                 goto init_err;
 492         }
 493
 494         /* FIXME
 495          *
 496          * This driver use fixed value here
 497          * And below settings expects MCLK = 12.288MHz
 498          *
 499          * When you select different MCLK, please check...
 500          *      DA7210_PLL_DIV1 val
 501          *      DA7210_PLL_DIV2 val
 502          *      DA7210_PLL_DIV3 val
 503          *      DA7210_PLL_DIV3 :: DA7210_MCLK_RANGExxx
 504          */
 505
 506         /*
 507          * make sure that DA7210 use bypass mode before start up
 508          */
 509         da7210_write(codec, DA7210_STARTUP1, 0);
 510         da7210_write(codec, DA7210_PLL_DIV3,
 511                      DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);
 512
 513         /*
 514          * ADC settings
 515          */
 516
 517         /* Enable Left & Right MIC PGA and Mic Bias */
 518         da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN | DA7210_MICBIAS_EN);
 519         da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);
 520
 521         /* Enable Left and Right input PGA */
 522         da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
 523         da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);
 524
 525         /* Enable Left and Right ADC */
 526         da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN | DA7210_ADC_R_EN);
 527
 528         /*
 529          * DAC settings
 530          */
 531
 532         /* Enable Left and Right DAC */
 533         da7210_write(codec, DA7210_DAC_SEL,
 534                      DA7210_DAC_L_SRC_DAI_L | DA7210_DAC_L_EN |
 535                      DA7210_DAC_R_SRC_DAI_R | DA7210_DAC_R_EN);
 536
 537         /* Enable Left and Right out PGA */
 538         da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
 539         da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);
 540
 541         /* Enable Left and Right HeadPhone PGA */
 542         da7210_write(codec, DA7210_HP_CFG,
 543                      DA7210_HP_2CAP_MODE | DA7210_HP_SENSE_EN |
 544                      DA7210_HP_L_EN | DA7210_HP_MODE | DA7210_HP_R_EN);
 545
 546         /* Diable PLL and bypass it */
 547         da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
 548
 549         /*
 550          * If 48kHz sound came, it use bypass mode,
 551          * and when it is 44.1kHz, it use PLL.
 552          *
 553          * This time, this driver sets PLL always ON
 554          * and controls bypass/PLL mode by switching
 555          * DA7210_PLL_DIV3 :: DA7210_PLL_BYP bit.
 556          *   see da7210_hw_params
 557          */
 558         da7210_write(codec, DA7210_PLL_DIV1, 0xE5); /* MCLK = 12.288MHz */
 559         da7210_write(codec, DA7210_PLL_DIV2, 0x99);
 560         da7210_write(codec, DA7210_PLL_DIV3, 0x0A |
 561                      DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);
 562         snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_EN, DA7210_PLL_EN);
 563
 564         /* As suggested by Dialog */
 565         da7210_write(codec, DA7210_A_HID_UNLOCK,        0x8B); /* unlock */
 566         da7210_write(codec, DA7210_A_TEST_UNLOCK,       0xB4);
 567         da7210_write(codec, DA7210_A_PLL1,              0x01);
 568         da7210_write(codec, DA7210_A_CP_MODE,           0x7C);
 569         da7210_write(codec, DA7210_A_HID_UNLOCK,        0x00); /* re-lock */
 570         da7210_write(codec, DA7210_A_TEST_UNLOCK,       0x00);
 571
 572         /* Activate all enabled subsystem */
 573         da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);
 574
 575         return ret;
 576
 577 init_err:
 578         kfree(codec->reg_cache);
 579         codec->reg_cache = NULL;
 580
 581         return ret;
 582
 583 }
 584
 585 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 586 static int __devinit da7210_i2c_probe(struct i2c_client *i2c,
 587                                       const struct i2c_device_id *id)
 588 {
 589         struct da7210_priv *da7210;
 590         struct snd_soc_codec *codec;
 591         int ret;
 592
 593         da7210 = kzalloc(sizeof(struct da7210_priv), GFP_KERNEL);
 594         if (!da7210)
 595                 return -ENOMEM;
 596
 597         codec = &da7210->codec;
 598         codec->dev = &i2c->dev;
 599
 600         i2c_set_clientdata(i2c, da7210);
 601         codec->control_data = i2c;
 602
 603         ret = da7210_init(da7210);
 604         if (ret < 0)
 605                 pr_err("Failed to initialise da7210 audio codec\n");
 606
 607         return ret;
 608 }
 609
 610 static int __devexit da7210_i2c_remove(struct i2c_client *client)
 611 {
 612         struct da7210_priv *da7210 = i2c_get_clientdata(client);
 613
 614         snd_soc_unregister_dai(&da7210_dai);
 615         kfree(da7210->codec.reg_cache);
 616         kfree(da7210);
 617         da7210_codec = NULL;
 618
 619         return 0;
 620 }
 621
 622 static const struct i2c_device_id da7210_i2c_id[] = {
 623         { "da7210", 0 },
 624         { }
 625 };
 626 MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);
 627
 628 /* I2C codec control layer */
 629 static struct i2c_driver da7210_i2c_driver = {
 630         .driver = {
 631                 .name = "DA7210 I2C Codec",
 632                 .owner = THIS_MODULE,
 633         },
 634         .probe = da7210_i2c_probe,
 635         .remove =  __devexit_p(da7210_i2c_remove),
 636         .id_table = da7210_i2c_id,
 637 };
 638 #endif
 639
 640 static int da7210_probe(struct platform_device *pdev)
 641 {
 642         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 643         struct snd_soc_codec *codec;
 644         int ret;
 645
 646         if (!da7210_codec) {
 647                 dev_err(&pdev->dev, "Codec device not registered\n");
 648                 return -ENODEV;
 649         }
 650
 651         socdev->card->codec = da7210_codec;
 652         codec = da7210_codec;
 653
 654         /* Register pcms */
 655         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 656         if (ret < 0)
 657                 goto pcm_err;
 658
 659         dev_info(&pdev->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
 660
 661 pcm_err:
 662         return ret;
 663 }
 664
 665 static int da7210_remove(struct platform_device *pdev)
 666 {
 667         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 668
 669         snd_soc_free_pcms(socdev);
 670         snd_soc_dapm_free(socdev);
 671
 672         return 0;
 673 }
 674
 675 struct snd_soc_codec_device soc_codec_dev_da7210 = {
 676         .probe =        da7210_probe,
 677         .remove =       da7210_remove,
 678 };
 679 EXPORT_SYMBOL_GPL(soc_codec_dev_da7210);
 680
 681 static int __init da7210_modinit(void)
 682 {
 683         int ret = 0;
 684 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 685         ret = i2c_add_driver(&da7210_i2c_driver);
 686 #endif
 687         return ret;
 688 }
 689 module_init(da7210_modinit);
 690
 691 static void __exit da7210_exit(void)
 692 {
 693 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 694         i2c_del_driver(&da7210_i2c_driver);
 695 #endif
 696 }
 697 module_exit(da7210_exit);
 698
 699 MODULE_DESCRIPTION("ASoC DA7210 driver");
 700 MODULE_AUTHOR("David Chen, Kuninori Morimoto");
 701 MODULE_LICENSE("GPL");