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_DIV1                 0x29
  59 #define DA7210_PLL_DIV2                 0x2A
  60 #define DA7210_PLL_DIV3                 0x2B
  61 #define DA7210_PLL                      0x2C
  62 #define DA7210_A_HID_UNLOCK             0x8A
  63 #define DA7210_A_TEST_UNLOCK            0x8B
  64 #define DA7210_A_PLL1                   0x90
  65 #define DA7210_A_CP_MODE                0xA7
  66
  67 /* STARTUP1 bit fields */
  68 #define DA7210_SC_MST_EN                (1 << 0)
  69
  70 /* MIC_L bit fields */
  71 #define DA7210_MICBIAS_EN               (1 << 6)
  72 #define DA7210_MIC_L_EN                 (1 << 7)
  73
  74 /* MIC_R bit fields */
  75 #define DA7210_MIC_R_EN                 (1 << 7)
  76
  77 /* INMIX_L bit fields */
  78 #define DA7210_IN_L_EN                  (1 << 7)
  79
  80 /* INMIX_R bit fields */
  81 #define DA7210_IN_R_EN                  (1 << 7)
  82
  83 /* ADC bit fields */
  84 #define DA7210_ADC_L_EN                 (1 << 3)
  85 #define DA7210_ADC_R_EN                 (1 << 7)
  86
  87 /* DAC/ADC HPF fields */
  88 #define DA7210_VOICE_F0_MASK            (0x7 << 4)
  89 #define DA7210_VOICE_F0_25              (1 << 4)
  90 #define DA7210_VOICE_EN                 (1 << 7)
  91
  92 /* DAC_SEL bit fields */
  93 #define DA7210_DAC_L_SRC_DAI_L          (4 << 0)
  94 #define DA7210_DAC_L_EN                 (1 << 3)
  95 #define DA7210_DAC_R_SRC_DAI_R          (5 << 4)
  96 #define DA7210_DAC_R_EN                 (1 << 7)
  97
  98 /* OUTMIX_L bit fields */
  99 #define DA7210_OUT_L_EN                 (1 << 7)
 100
 101 /* OUTMIX_R bit fields */
 102 #define DA7210_OUT_R_EN                 (1 << 7)
 103
 104 /* HP_CFG bit fields */
 105 #define DA7210_HP_2CAP_MODE             (1 << 1)
 106 #define DA7210_HP_SENSE_EN              (1 << 2)
 107 #define DA7210_HP_L_EN                  (1 << 3)
 108 #define DA7210_HP_MODE                  (1 << 6)
 109 #define DA7210_HP_R_EN                  (1 << 7)
 110
 111 /* DAI_SRC_SEL bit fields */
 112 #define DA7210_DAI_OUT_L_SRC            (6 << 0)
 113 #define DA7210_DAI_OUT_R_SRC            (7 << 4)
 114
 115 /* DAI_CFG1 bit fields */
 116 #define DA7210_DAI_WORD_S16_LE          (0 << 0)
 117 #define DA7210_DAI_WORD_S24_LE          (2 << 0)
 118 #define DA7210_DAI_FLEN_64BIT           (1 << 2)
 119 #define DA7210_DAI_MODE_MASTER          (1 << 7)
 120
 121 /* DAI_CFG3 bit fields */
 122 #define DA7210_DAI_FORMAT_I2SMODE       (0 << 0)
 123 #define DA7210_DAI_OE                   (1 << 3)
 124 #define DA7210_DAI_EN                   (1 << 7)
 125
 126 /*PLL_DIV3 bit fields */
 127 #define DA7210_MCLK_RANGE_10_20_MHZ     (1 << 4)
 128 #define DA7210_PLL_BYP                  (1 << 6)
 129
 130 /* PLL bit fields */
 131 #define DA7210_PLL_FS_MASK              (0xF << 0)
 132 #define DA7210_PLL_FS_8000              (0x1 << 0)
 133 #define DA7210_PLL_FS_11025             (0x2 << 0)
 134 #define DA7210_PLL_FS_12000             (0x3 << 0)
 135 #define DA7210_PLL_FS_16000             (0x5 << 0)
 136 #define DA7210_PLL_FS_22050             (0x6 << 0)
 137 #define DA7210_PLL_FS_24000             (0x7 << 0)
 138 #define DA7210_PLL_FS_32000             (0x9 << 0)
 139 #define DA7210_PLL_FS_44100             (0xA << 0)
 140 #define DA7210_PLL_FS_48000             (0xB << 0)
 141 #define DA7210_PLL_FS_88200             (0xE << 0)
 142 #define DA7210_PLL_FS_96000             (0xF << 0)
 143 #define DA7210_PLL_EN                   (0x1 << 7)
 144
 145 #define DA7210_VERSION "0.0.1"
 146
 147 /* Codec private data */
 148 struct da7210_priv {
 149         struct snd_soc_codec codec;
 150 };
 151
 152 static struct snd_soc_codec *da7210_codec;
 153
 154 /*
 155  * Register cache
 156  */
 157 static const u8 da7210_reg[] = {
 158         0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R0  - R7  */
 159         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, /* R8  - RF  */
 160         0x00, 0x00, 0x00, 0x00, 0x08, 0x10, 0x10, 0x54, /* R10 - R17 */
 161         0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R18 - R1F */
 162         0x00, 0x00, 0x00, 0x02, 0x00, 0x76, 0x00, 0x00, /* R20 - R27 */
 163         0x04, 0x00, 0x00, 0x30, 0x2A, 0x00, 0x40, 0x00, /* R28 - R2F */
 164         0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, /* R30 - R37 */
 165         0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, /* R38 - R3F */
 166         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R40 - R4F */
 167         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R48 - R4F */
 168         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R50 - R57 */
 169         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R58 - R5F */
 170         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R60 - R67 */
 171         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R68 - R6F */
 172         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* R70 - R77 */
 173         0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x54, 0x00, /* R78 - R7F */
 174         0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, /* R80 - R87 */
 175         0x00,                                           /* R88       */
 176 };
 177
 178 /*
 179  * Read da7210 register cache
 180  */
 181 static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
 182 {
 183         u8 *cache = codec->reg_cache;
 184         BUG_ON(reg > ARRAY_SIZE(da7210_reg));
 185         return cache[reg];
 186 }
 187
 188 /*
 189  * Write to the da7210 register space
 190  */
 191 static int da7210_write(struct snd_soc_codec *codec, u32 reg, u32 value)
 192 {
 193         u8 *cache = codec->reg_cache;
 194         u8 data[2];
 195
 196         BUG_ON(codec->volatile_register);
 197
 198         data[0] = reg & 0xff;
 199         data[1] = value & 0xff;
 200
 201         if (reg >= codec->reg_cache_size)
 202                 return -EIO;
 203
 204         if (2 != codec->hw_write(codec->control_data, data, 2))
 205                 return -EIO;
 206
 207         cache[reg] = value;
 208         return 0;
 209 }
 210
 211 /*
 212  * Read from the da7210 register space.
 213  */
 214 static inline u32 da7210_read(struct snd_soc_codec *codec, u32 reg)
 215 {
 216         if (DA7210_STATUS == reg)
 217                 return i2c_smbus_read_byte_data(codec->control_data, reg);
 218
 219         return da7210_read_reg_cache(codec, reg);
 220 }
 221
 222 static int da7210_startup(struct snd_pcm_substream *substream,
 223                           struct snd_soc_dai *dai)
 224 {
 225         int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 226         struct snd_soc_codec *codec = dai->codec;
 227
 228         if (is_play) {
 229                 /* PlayBack Volume 40 */
 230                 snd_soc_update_bits(codec, DA7210_HP_L_VOL, 0x3F, 40);
 231                 snd_soc_update_bits(codec, DA7210_HP_R_VOL, 0x3F, 40);
 232
 233                 /* Enable Out */
 234                 snd_soc_update_bits(codec, DA7210_OUTMIX_L, 0x1F, 0x10);
 235                 snd_soc_update_bits(codec, DA7210_OUTMIX_R, 0x1F, 0x10);
 236
 237         } else {
 238                 /* Volume 7 */
 239                 snd_soc_update_bits(codec, DA7210_MIC_L, 0x7, 0x7);
 240                 snd_soc_update_bits(codec, DA7210_MIC_R, 0x7, 0x7);
 241
 242                 /* Enable Mic */
 243                 snd_soc_update_bits(codec, DA7210_INMIX_L, 0x1F, 0x1);
 244                 snd_soc_update_bits(codec, DA7210_INMIX_R, 0x1F, 0x1);
 245         }
 246
 247         return 0;
 248 }
 249
 250 /*
 251  * Set PCM DAI word length.
 252  */
 253 static int da7210_hw_params(struct snd_pcm_substream *substream,
 254                             struct snd_pcm_hw_params *params,
 255                             struct snd_soc_dai *dai)
 256 {
 257         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 258         struct snd_soc_device *socdev = rtd->socdev;
 259         struct snd_soc_codec *codec = socdev->card->codec;
 260         u32 dai_cfg1;
 261         u32 hpf_reg, hpf_mask, hpf_value;
 262         u32 fs, bypass;
 263
 264         /* set DAI source to Left and Right ADC */
 265         da7210_write(codec, DA7210_DAI_SRC_SEL,
 266                      DA7210_DAI_OUT_R_SRC | DA7210_DAI_OUT_L_SRC);
 267
 268         /* Enable DAI */
 269         da7210_write(codec, DA7210_DAI_CFG3, DA7210_DAI_OE | DA7210_DAI_EN);
 270
 271         dai_cfg1 = 0xFC & da7210_read(codec, DA7210_DAI_CFG1);
 272
 273         switch (params_format(params)) {
 274         case SNDRV_PCM_FORMAT_S16_LE:
 275                 dai_cfg1 |= DA7210_DAI_WORD_S16_LE;
 276                 break;
 277         case SNDRV_PCM_FORMAT_S24_LE:
 278                 dai_cfg1 |= DA7210_DAI_WORD_S24_LE;
 279                 break;
 280         default:
 281                 return -EINVAL;
 282         }
 283
 284         da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
 285
 286         hpf_reg = (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) ?
 287                 DA7210_DAC_HPF : DA7210_ADC_HPF;
 288
 289         switch (params_rate(params)) {
 290         case 8000:
 291                 fs              = DA7210_PLL_FS_8000;
 292                 hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
 293                 hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
 294                 bypass          = DA7210_PLL_BYP;
 295                 break;
 296         case 11025:
 297                 fs              = DA7210_PLL_FS_11025;
 298                 hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
 299                 hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
 300                 bypass          = 0;
 301                 break;
 302         case 12000:
 303                 fs              = DA7210_PLL_FS_12000;
 304                 hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
 305                 hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
 306                 bypass          = DA7210_PLL_BYP;
 307                 break;
 308         case 16000:
 309                 fs              = DA7210_PLL_FS_16000;
 310                 hpf_mask        = DA7210_VOICE_F0_MASK  | DA7210_VOICE_EN;
 311                 hpf_value       = DA7210_VOICE_F0_25    | DA7210_VOICE_EN;
 312                 bypass          = DA7210_PLL_BYP;
 313                 break;
 314         case 22050:
 315                 fs              = DA7210_PLL_FS_22050;
 316                 hpf_mask        = DA7210_VOICE_EN;
 317                 hpf_value       = 0;
 318                 bypass          = 0;
 319                 break;
 320         case 32000:
 321                 fs              = DA7210_PLL_FS_32000;
 322                 hpf_mask        = DA7210_VOICE_EN;
 323                 hpf_value       = 0;
 324                 bypass          = DA7210_PLL_BYP;
 325                 break;
 326         case 44100:
 327                 fs              = DA7210_PLL_FS_44100;
 328                 hpf_mask        = DA7210_VOICE_EN;
 329                 hpf_value       = 0;
 330                 bypass          = 0;
 331                 break;
 332         case 48000:
 333                 fs              = DA7210_PLL_FS_48000;
 334                 hpf_mask        = DA7210_VOICE_EN;
 335                 hpf_value       = 0;
 336                 bypass          = DA7210_PLL_BYP;
 337                 break;
 338         case 88200:
 339                 fs              = DA7210_PLL_FS_88200;
 340                 hpf_mask        = DA7210_VOICE_EN;
 341                 hpf_value       = 0;
 342                 bypass          = 0;
 343                 break;
 344         case 96000:
 345                 fs              = DA7210_PLL_FS_96000;
 346                 hpf_mask        = DA7210_VOICE_EN;
 347                 hpf_value       = 0;
 348                 bypass          = DA7210_PLL_BYP;
 349                 break;
 350         default:
 351                 return -EINVAL;
 352         }
 353
 354         /* Disable active mode */
 355         snd_soc_update_bits(codec, DA7210_STARTUP1, DA7210_SC_MST_EN, 0);
 356
 357         snd_soc_update_bits(codec, hpf_reg, hpf_mask, hpf_value);
 358         snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_FS_MASK, fs);
 359         snd_soc_update_bits(codec, DA7210_PLL_DIV3, DA7210_PLL_BYP, bypass);
 360
 361         /* Enable active mode */
 362         snd_soc_update_bits(codec, DA7210_STARTUP1,
 363                             DA7210_SC_MST_EN, DA7210_SC_MST_EN);
 364
 365         return 0;
 366 }
 367
 368 /*
 369  * Set DAI mode and Format
 370  */
 371 static int da7210_set_dai_fmt(struct snd_soc_dai *codec_dai, u32 fmt)
 372 {
 373         struct snd_soc_codec *codec = codec_dai->codec;
 374         u32 dai_cfg1;
 375         u32 dai_cfg3;
 376
 377         dai_cfg1 = 0x7f & da7210_read(codec, DA7210_DAI_CFG1);
 378         dai_cfg3 = 0xfc & da7210_read(codec, DA7210_DAI_CFG3);
 379
 380         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 381         case SND_SOC_DAIFMT_CBM_CFM:
 382                 dai_cfg1 |= DA7210_DAI_MODE_MASTER;
 383                 break;
 384         default:
 385                 return -EINVAL;
 386         }
 387
 388         /* FIXME
 389          *
 390          * It support I2S only now
 391          */
 392         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 393         case SND_SOC_DAIFMT_I2S:
 394                 dai_cfg3 |= DA7210_DAI_FORMAT_I2SMODE;
 395                 break;
 396         default:
 397                 return -EINVAL;
 398         }
 399
 400         /* FIXME
 401          *
 402          * It support 64bit data transmission only now
 403          */
 404         dai_cfg1 |= DA7210_DAI_FLEN_64BIT;
 405
 406         da7210_write(codec, DA7210_DAI_CFG1, dai_cfg1);
 407         da7210_write(codec, DA7210_DAI_CFG3, dai_cfg3);
 408
 409         return 0;
 410 }
 411
 412 #define DA7210_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)
 413
 414 /* DAI operations */
 415 static struct snd_soc_dai_ops da7210_dai_ops = {
 416         .startup        = da7210_startup,
 417         .hw_params      = da7210_hw_params,
 418         .set_fmt        = da7210_set_dai_fmt,
 419 };
 420
 421 struct snd_soc_dai da7210_dai = {
 422         .name = "DA7210 IIS",
 423         .id = 0,
 424         /* playback capabilities */
 425         .playback = {
 426                 .stream_name = "Playback",
 427                 .channels_min = 1,
 428                 .channels_max = 2,
 429                 .rates = SNDRV_PCM_RATE_8000_96000,
 430                 .formats = DA7210_FORMATS,
 431         },
 432         /* capture capabilities */
 433         .capture = {
 434                 .stream_name = "Capture",
 435                 .channels_min = 1,
 436                 .channels_max = 2,
 437                 .rates = SNDRV_PCM_RATE_8000_96000,
 438                 .formats = DA7210_FORMATS,
 439         },
 440         .ops = &da7210_dai_ops,
 441         .symmetric_rates = 1,
 442 };
 443 EXPORT_SYMBOL_GPL(da7210_dai);
 444
 445 /*
 446  * Initialize the DA7210 driver
 447  * register the mixer and dsp interfaces with the kernel
 448  */
 449 static int da7210_init(struct da7210_priv *da7210)
 450 {
 451         struct snd_soc_codec *codec = &da7210->codec;
 452         int ret = 0;
 453
 454         if (da7210_codec) {
 455                 dev_err(codec->dev, "Another da7210 is registered\n");
 456                 return -EINVAL;
 457         }
 458
 459         mutex_init(&codec->mutex);
 460         INIT_LIST_HEAD(&codec->dapm_widgets);
 461         INIT_LIST_HEAD(&codec->dapm_paths);
 462
 463         codec->private_data     = da7210;
 464         codec->name             = "DA7210";
 465         codec->owner            = THIS_MODULE;
 466         codec->read             = da7210_read;
 467         codec->write            = da7210_write;
 468         codec->dai              = &da7210_dai;
 469         codec->num_dai          = 1;
 470         codec->hw_write         = (hw_write_t)i2c_master_send;
 471         codec->reg_cache_size   = ARRAY_SIZE(da7210_reg);
 472         codec->reg_cache        = kmemdup(da7210_reg,
 473                                           sizeof(da7210_reg), GFP_KERNEL);
 474
 475         if (!codec->reg_cache)
 476                 return -ENOMEM;
 477
 478         da7210_dai.dev = codec->dev;
 479         da7210_codec = codec;
 480
 481         ret = snd_soc_register_codec(codec);
 482         if (ret) {
 483                 dev_err(codec->dev, "Failed to register CODEC: %d\n", ret);
 484                 goto init_err;
 485         }
 486
 487         ret = snd_soc_register_dai(&da7210_dai);
 488         if (ret) {
 489                 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
 490                 goto init_err;
 491         }
 492
 493         /* FIXME
 494          *
 495          * This driver use fixed value here
 496          * And below settings expects MCLK = 12.288MHz
 497          *
 498          * When you select different MCLK, please check...
 499          *      DA7210_PLL_DIV1 val
 500          *      DA7210_PLL_DIV2 val
 501          *      DA7210_PLL_DIV3 val
 502          *      DA7210_PLL_DIV3 :: DA7210_MCLK_RANGExxx
 503          */
 504
 505         /*
 506          * make sure that DA7210 use bypass mode before start up
 507          */
 508         da7210_write(codec, DA7210_STARTUP1, 0);
 509         da7210_write(codec, DA7210_PLL_DIV3,
 510                      DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);
 511
 512         /*
 513          * ADC settings
 514          */
 515
 516         /* Enable Left & Right MIC PGA and Mic Bias */
 517         da7210_write(codec, DA7210_MIC_L, DA7210_MIC_L_EN | DA7210_MICBIAS_EN);
 518         da7210_write(codec, DA7210_MIC_R, DA7210_MIC_R_EN);
 519
 520         /* Enable Left and Right input PGA */
 521         da7210_write(codec, DA7210_INMIX_L, DA7210_IN_L_EN);
 522         da7210_write(codec, DA7210_INMIX_R, DA7210_IN_R_EN);
 523
 524         /* Enable Left and Right ADC */
 525         da7210_write(codec, DA7210_ADC, DA7210_ADC_L_EN | DA7210_ADC_R_EN);
 526
 527         /*
 528          * DAC settings
 529          */
 530
 531         /* Enable Left and Right DAC */
 532         da7210_write(codec, DA7210_DAC_SEL,
 533                      DA7210_DAC_L_SRC_DAI_L | DA7210_DAC_L_EN |
 534                      DA7210_DAC_R_SRC_DAI_R | DA7210_DAC_R_EN);
 535
 536         /* Enable Left and Right out PGA */
 537         da7210_write(codec, DA7210_OUTMIX_L, DA7210_OUT_L_EN);
 538         da7210_write(codec, DA7210_OUTMIX_R, DA7210_OUT_R_EN);
 539
 540         /* Enable Left and Right HeadPhone PGA */
 541         da7210_write(codec, DA7210_HP_CFG,
 542                      DA7210_HP_2CAP_MODE | DA7210_HP_SENSE_EN |
 543                      DA7210_HP_L_EN | DA7210_HP_MODE | DA7210_HP_R_EN);
 544
 545         /* Diable PLL and bypass it */
 546         da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
 547
 548         /*
 549          * If 48kHz sound came, it use bypass mode,
 550          * and when it is 44.1kHz, it use PLL.
 551          *
 552          * This time, this driver sets PLL always ON
 553          * and controls bypass/PLL mode by switching
 554          * DA7210_PLL_DIV3 :: DA7210_PLL_BYP bit.
 555          *   see da7210_hw_params
 556          */
 557         da7210_write(codec, DA7210_PLL_DIV1, 0xE5); /* MCLK = 12.288MHz */
 558         da7210_write(codec, DA7210_PLL_DIV2, 0x99);
 559         da7210_write(codec, DA7210_PLL_DIV3, 0x0A |
 560                      DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);
 561         snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_EN, DA7210_PLL_EN);
 562
 563         /* As suggested by Dialog */
 564         da7210_write(codec, DA7210_A_HID_UNLOCK,        0x8B); /* unlock */
 565         da7210_write(codec, DA7210_A_TEST_UNLOCK,       0xB4);
 566         da7210_write(codec, DA7210_A_PLL1,              0x01);
 567         da7210_write(codec, DA7210_A_CP_MODE,           0x7C);
 568         da7210_write(codec, DA7210_A_HID_UNLOCK,        0x00); /* re-lock */
 569         da7210_write(codec, DA7210_A_TEST_UNLOCK,       0x00);
 570
 571         /* Activate all enabled subsystem */
 572         da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);
 573
 574         return ret;
 575
 576 init_err:
 577         kfree(codec->reg_cache);
 578         codec->reg_cache = NULL;
 579
 580         return ret;
 581
 582 }
 583
 584 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 585 static int __devinit da7210_i2c_probe(struct i2c_client *i2c,
 586                                       const struct i2c_device_id *id)
 587 {
 588         struct da7210_priv *da7210;
 589         struct snd_soc_codec *codec;
 590         int ret;
 591
 592         da7210 = kzalloc(sizeof(struct da7210_priv), GFP_KERNEL);
 593         if (!da7210)
 594                 return -ENOMEM;
 595
 596         codec = &da7210->codec;
 597         codec->dev = &i2c->dev;
 598
 599         i2c_set_clientdata(i2c, da7210);
 600         codec->control_data = i2c;
 601
 602         ret = da7210_init(da7210);
 603         if (ret < 0)
 604                 pr_err("Failed to initialise da7210 audio codec\n");
 605
 606         return ret;
 607 }
 608
 609 static int __devexit da7210_i2c_remove(struct i2c_client *client)
 610 {
 611         struct da7210_priv *da7210 = i2c_get_clientdata(client);
 612
 613         snd_soc_unregister_dai(&da7210_dai);
 614         kfree(da7210->codec.reg_cache);
 615         kfree(da7210);
 616         da7210_codec = NULL;
 617
 618         return 0;
 619 }
 620
 621 static const struct i2c_device_id da7210_i2c_id[] = {
 622         { "da7210", 0 },
 623         { }
 624 };
 625 MODULE_DEVICE_TABLE(i2c, da7210_i2c_id);
 626
 627 /* I2C codec control layer */
 628 static struct i2c_driver da7210_i2c_driver = {
 629         .driver = {
 630                 .name = "DA7210 I2C Codec",
 631                 .owner = THIS_MODULE,
 632         },
 633         .probe = da7210_i2c_probe,
 634         .remove =  __devexit_p(da7210_i2c_remove),
 635         .id_table = da7210_i2c_id,
 636 };
 637 #endif
 638
 639 static int da7210_probe(struct platform_device *pdev)
 640 {
 641         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 642         struct snd_soc_codec *codec;
 643         int ret;
 644
 645         if (!da7210_codec) {
 646                 dev_err(&pdev->dev, "Codec device not registered\n");
 647                 return -ENODEV;
 648         }
 649
 650         socdev->card->codec = da7210_codec;
 651         codec = da7210_codec;
 652
 653         /* Register pcms */
 654         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 655         if (ret < 0)
 656                 goto pcm_err;
 657
 658         dev_info(&pdev->dev, "DA7210 Audio Codec %s\n", DA7210_VERSION);
 659
 660 pcm_err:
 661         return ret;
 662 }
 663
 664 static int da7210_remove(struct platform_device *pdev)
 665 {
 666         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 667
 668         snd_soc_free_pcms(socdev);
 669         snd_soc_dapm_free(socdev);
 670
 671         return 0;
 672 }
 673
 674 struct snd_soc_codec_device soc_codec_dev_da7210 = {
 675         .probe =        da7210_probe,
 676         .remove =       da7210_remove,
 677 };
 678 EXPORT_SYMBOL_GPL(soc_codec_dev_da7210);
 679
 680 static int __init da7210_modinit(void)
 681 {
 682         int ret = 0;
 683 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 684         ret = i2c_add_driver(&da7210_i2c_driver);
 685 #endif
 686         return ret;
 687 }
 688 module_init(da7210_modinit);
 689
 690 static void __exit da7210_exit(void)
 691 {
 692 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 693         i2c_del_driver(&da7210_i2c_driver);
 694 #endif
 695 }
 696 module_exit(da7210_exit);
 697
 698 MODULE_DESCRIPTION("ASoC DA7210 driver");
 699 MODULE_AUTHOR("David Chen, Kuninori Morimoto");
 700 MODULE_LICENSE("GPL");