sound/soc/codecs/wm8993.c

   1 /*
   2  * wm8993.c -- WM8993 ALSA SoC audio driver
   3  *
   4  * Copyright 2009, 2010 Wolfson Microelectronics plc
   5  *
   6  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/moduleparam.h>
  15 #include <linux/init.h>
  16 #include <linux/delay.h>
  17 #include <linux/pm.h>
  18 #include <linux/i2c.h>
  19 #include <linux/regulator/consumer.h>
  20 #include <linux/spi/spi.h>
  21 #include <linux/slab.h>
  22 #include <sound/core.h>
  23 #include <sound/pcm.h>
  24 #include <sound/pcm_params.h>
  25 #include <sound/tlv.h>
  26 #include <sound/soc.h>
  27 #include <sound/initval.h>
  28 #include <sound/wm8993.h>
  29
  30 #include "wm8993.h"
  31 #include "wm_hubs.h"
  32
  33 #define WM8993_NUM_SUPPLIES 6
  34 static const char *wm8993_supply_names[WM8993_NUM_SUPPLIES] = {
  35         "DCVDD",
  36         "DBVDD",
  37         "AVDD1",
  38         "AVDD2",
  39         "CPVDD",
  40         "SPKVDD",
  41 };
  42
  43 static u16 wm8993_reg_defaults[WM8993_REGISTER_COUNT] = {
  44         0x8993,     /* R0   - Software Reset */
  45         0x0000,     /* R1   - Power Management (1) */
  46         0x6000,     /* R2   - Power Management (2) */
  47         0x0000,     /* R3   - Power Management (3) */
  48         0x4050,     /* R4   - Audio Interface (1) */
  49         0x4000,     /* R5   - Audio Interface (2) */
  50         0x01C8,     /* R6   - Clocking 1 */
  51         0x0000,     /* R7   - Clocking 2 */
  52         0x0000,     /* R8   - Audio Interface (3) */
  53         0x0040,     /* R9   - Audio Interface (4) */
  54         0x0004,     /* R10  - DAC CTRL */
  55         0x00C0,     /* R11  - Left DAC Digital Volume */
  56         0x00C0,     /* R12  - Right DAC Digital Volume */
  57         0x0000,     /* R13  - Digital Side Tone */
  58         0x0300,     /* R14  - ADC CTRL */
  59         0x00C0,     /* R15  - Left ADC Digital Volume */
  60         0x00C0,     /* R16  - Right ADC Digital Volume */
  61         0x0000,     /* R17 */
  62         0x0000,     /* R18  - GPIO CTRL 1 */
  63         0x0010,     /* R19  - GPIO1 */
  64         0x0000,     /* R20  - IRQ_DEBOUNCE */
  65         0x0000,     /* R21 */
  66         0x8000,     /* R22  - GPIOCTRL 2 */
  67         0x0800,     /* R23  - GPIO_POL */
  68         0x008B,     /* R24  - Left Line Input 1&2 Volume */
  69         0x008B,     /* R25  - Left Line Input 3&4 Volume */
  70         0x008B,     /* R26  - Right Line Input 1&2 Volume */
  71         0x008B,     /* R27  - Right Line Input 3&4 Volume */
  72         0x006D,     /* R28  - Left Output Volume */
  73         0x006D,     /* R29  - Right Output Volume */
  74         0x0066,     /* R30  - Line Outputs Volume */
  75         0x0020,     /* R31  - HPOUT2 Volume */
  76         0x0079,     /* R32  - Left OPGA Volume */
  77         0x0079,     /* R33  - Right OPGA Volume */
  78         0x0003,     /* R34  - SPKMIXL Attenuation */
  79         0x0003,     /* R35  - SPKMIXR Attenuation */
  80         0x0011,     /* R36  - SPKOUT Mixers */
  81         0x0100,     /* R37  - SPKOUT Boost */
  82         0x0079,     /* R38  - Speaker Volume Left */
  83         0x0079,     /* R39  - Speaker Volume Right */
  84         0x0000,     /* R40  - Input Mixer2 */
  85         0x0000,     /* R41  - Input Mixer3 */
  86         0x0000,     /* R42  - Input Mixer4 */
  87         0x0000,     /* R43  - Input Mixer5 */
  88         0x0000,     /* R44  - Input Mixer6 */
  89         0x0000,     /* R45  - Output Mixer1 */
  90         0x0000,     /* R46  - Output Mixer2 */
  91         0x0000,     /* R47  - Output Mixer3 */
  92         0x0000,     /* R48  - Output Mixer4 */
  93         0x0000,     /* R49  - Output Mixer5 */
  94         0x0000,     /* R50  - Output Mixer6 */
  95         0x0000,     /* R51  - HPOUT2 Mixer */
  96         0x0000,     /* R52  - Line Mixer1 */
  97         0x0000,     /* R53  - Line Mixer2 */
  98         0x0000,     /* R54  - Speaker Mixer */
  99         0x0000,     /* R55  - Additional Control */
 100         0x0000,     /* R56  - AntiPOP1 */
 101         0x0000,     /* R57  - AntiPOP2 */
 102         0x0000,     /* R58  - MICBIAS */
 103         0x0000,     /* R59 */
 104         0x0000,     /* R60  - FLL Control 1 */
 105         0x0000,     /* R61  - FLL Control 2 */
 106         0x0000,     /* R62  - FLL Control 3 */
 107         0x2EE0,     /* R63  - FLL Control 4 */
 108         0x0002,     /* R64  - FLL Control 5 */
 109         0x2287,     /* R65  - Clocking 3 */
 110         0x025F,     /* R66  - Clocking 4 */
 111         0x0000,     /* R67  - MW Slave Control */
 112         0x0000,     /* R68 */
 113         0x0002,     /* R69  - Bus Control 1 */
 114         0x0000,     /* R70  - Write Sequencer 0 */
 115         0x0000,     /* R71  - Write Sequencer 1 */
 116         0x0000,     /* R72  - Write Sequencer 2 */
 117         0x0000,     /* R73  - Write Sequencer 3 */
 118         0x0000,     /* R74  - Write Sequencer 4 */
 119         0x0000,     /* R75  - Write Sequencer 5 */
 120         0x1F25,     /* R76  - Charge Pump 1 */
 121         0x0000,     /* R77 */
 122         0x0000,     /* R78 */
 123         0x0000,     /* R79 */
 124         0x0000,     /* R80 */
 125         0x0000,     /* R81  - Class W 0 */
 126         0x0000,     /* R82 */
 127         0x0000,     /* R83 */
 128         0x0000,     /* R84  - DC Servo 0 */
 129         0x054A,     /* R85  - DC Servo 1 */
 130         0x0000,     /* R86 */
 131         0x0000,     /* R87  - DC Servo 3 */
 132         0x0000,     /* R88  - DC Servo Readback 0 */
 133         0x0000,     /* R89  - DC Servo Readback 1 */
 134         0x0000,     /* R90  - DC Servo Readback 2 */
 135         0x0000,     /* R91 */
 136         0x0000,     /* R92 */
 137         0x0000,     /* R93 */
 138         0x0000,     /* R94 */
 139         0x0000,     /* R95 */
 140         0x0100,     /* R96  - Analogue HP 0 */
 141         0x0000,     /* R97 */
 142         0x0000,     /* R98  - EQ1 */
 143         0x000C,     /* R99  - EQ2 */
 144         0x000C,     /* R100 - EQ3 */
 145         0x000C,     /* R101 - EQ4 */
 146         0x000C,     /* R102 - EQ5 */
 147         0x000C,     /* R103 - EQ6 */
 148         0x0FCA,     /* R104 - EQ7 */
 149         0x0400,     /* R105 - EQ8 */
 150         0x00D8,     /* R106 - EQ9 */
 151         0x1EB5,     /* R107 - EQ10 */
 152         0xF145,     /* R108 - EQ11 */
 153         0x0B75,     /* R109 - EQ12 */
 154         0x01C5,     /* R110 - EQ13 */
 155         0x1C58,     /* R111 - EQ14 */
 156         0xF373,     /* R112 - EQ15 */
 157         0x0A54,     /* R113 - EQ16 */
 158         0x0558,     /* R114 - EQ17 */
 159         0x168E,     /* R115 - EQ18 */
 160         0xF829,     /* R116 - EQ19 */
 161         0x07AD,     /* R117 - EQ20 */
 162         0x1103,     /* R118 - EQ21 */
 163         0x0564,     /* R119 - EQ22 */
 164         0x0559,     /* R120 - EQ23 */
 165         0x4000,     /* R121 - EQ24 */
 166         0x0000,     /* R122 - Digital Pulls */
 167         0x0F08,     /* R123 - DRC Control 1 */
 168         0x0000,     /* R124 - DRC Control 2 */
 169         0x0080,     /* R125 - DRC Control 3 */
 170         0x0000,     /* R126 - DRC Control 4 */
 171 };
 172
 173 static struct {
 174         int ratio;
 175         int clk_sys_rate;
 176 } clk_sys_rates[] = {
 177         { 64,   0 },
 178         { 128,  1 },
 179         { 192,  2 },
 180         { 256,  3 },
 181         { 384,  4 },
 182         { 512,  5 },
 183         { 768,  6 },
 184         { 1024, 7 },
 185         { 1408, 8 },
 186         { 1536, 9 },
 187 };
 188
 189 static struct {
 190         int rate;
 191         int sample_rate;
 192 } sample_rates[] = {
 193         { 8000,  0  },
 194         { 11025, 1  },
 195         { 12000, 1  },
 196         { 16000, 2  },
 197         { 22050, 3  },
 198         { 24000, 3  },
 199         { 32000, 4  },
 200         { 44100, 5  },
 201         { 48000, 5  },
 202 };
 203
 204 static struct {
 205         int div; /* *10 due to .5s */
 206         int bclk_div;
 207 } bclk_divs[] = {
 208         { 10,  0  },
 209         { 15,  1  },
 210         { 20,  2  },
 211         { 30,  3  },
 212         { 40,  4  },
 213         { 55,  5  },
 214         { 60,  6  },
 215         { 80,  7  },
 216         { 110, 8  },
 217         { 120, 9  },
 218         { 160, 10 },
 219         { 220, 11 },
 220         { 240, 12 },
 221         { 320, 13 },
 222         { 440, 14 },
 223         { 480, 15 },
 224 };
 225
 226 struct wm8993_priv {
 227         struct wm_hubs_data hubs_data;
 228         struct regulator_bulk_data supplies[WM8993_NUM_SUPPLIES];
 229         struct wm8993_platform_data pdata;
 230         enum snd_soc_control_type control_type;
 231         int master;
 232         int sysclk_source;
 233         int tdm_slots;
 234         int tdm_width;
 235         unsigned int mclk_rate;
 236         unsigned int sysclk_rate;
 237         unsigned int fs;
 238         unsigned int bclk;
 239         int class_w_users;
 240         unsigned int fll_fref;
 241         unsigned int fll_fout;
 242         int fll_src;
 243 };
 244
 245 static int wm8993_volatile(unsigned int reg)
 246 {
 247         switch (reg) {
 248         case WM8993_SOFTWARE_RESET:
 249         case WM8993_DC_SERVO_0:
 250         case WM8993_DC_SERVO_READBACK_0:
 251         case WM8993_DC_SERVO_READBACK_1:
 252         case WM8993_DC_SERVO_READBACK_2:
 253                 return 1;
 254         default:
 255                 return 0;
 256         }
 257 }
 258
 259 struct _fll_div {
 260         u16 fll_fratio;
 261         u16 fll_outdiv;
 262         u16 fll_clk_ref_div;
 263         u16 n;
 264         u16 k;
 265 };
 266
 267 /* The size in bits of the FLL divide multiplied by 10
 268  * to allow rounding later */
 269 #define FIXED_FLL_SIZE ((1 << 16) * 10)
 270
 271 static struct {
 272         unsigned int min;
 273         unsigned int max;
 274         u16 fll_fratio;
 275         int ratio;
 276 } fll_fratios[] = {
 277         {       0,    64000, 4, 16 },
 278         {   64000,   128000, 3,  8 },
 279         {  128000,   256000, 2,  4 },
 280         {  256000,  1000000, 1,  2 },
 281         { 1000000, 13500000, 0,  1 },
 282 };
 283
 284 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
 285                        unsigned int Fout)
 286 {
 287         u64 Kpart;
 288         unsigned int K, Ndiv, Nmod, target;
 289         unsigned int div;
 290         int i;
 291
 292         /* Fref must be <=13.5MHz */
 293         div = 1;
 294         fll_div->fll_clk_ref_div = 0;
 295         while ((Fref / div) > 13500000) {
 296                 div *= 2;
 297                 fll_div->fll_clk_ref_div++;
 298
 299                 if (div > 8) {
 300                         pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
 301                                Fref);
 302                         return -EINVAL;
 303                 }
 304         }
 305
 306         pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
 307
 308         /* Apply the division for our remaining calculations */
 309         Fref /= div;
 310
 311         /* Fvco should be 90-100MHz; don't check the upper bound */
 312         div = 0;
 313         target = Fout * 2;
 314         while (target < 90000000) {
 315                 div++;
 316                 target *= 2;
 317                 if (div > 7) {
 318                         pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
 319                                Fout);
 320                         return -EINVAL;
 321                 }
 322         }
 323         fll_div->fll_outdiv = div;
 324
 325         pr_debug("Fvco=%dHz\n", target);
 326
 327         /* Find an appropraite FLL_FRATIO and factor it out of the target */
 328         for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
 329                 if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
 330                         fll_div->fll_fratio = fll_fratios[i].fll_fratio;
 331                         target /= fll_fratios[i].ratio;
 332                         break;
 333                 }
 334         }
 335         if (i == ARRAY_SIZE(fll_fratios)) {
 336                 pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
 337                 return -EINVAL;
 338         }
 339
 340         /* Now, calculate N.K */
 341         Ndiv = target / Fref;
 342
 343         fll_div->n = Ndiv;
 344         Nmod = target % Fref;
 345         pr_debug("Nmod=%d\n", Nmod);
 346
 347         /* Calculate fractional part - scale up so we can round. */
 348         Kpart = FIXED_FLL_SIZE * (long long)Nmod;
 349
 350         do_div(Kpart, Fref);
 351
 352         K = Kpart & 0xFFFFFFFF;
 353
 354         if ((K % 10) >= 5)
 355                 K += 5;
 356
 357         /* Move down to proper range now rounding is done */
 358         fll_div->k = K / 10;
 359
 360         pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
 361                  fll_div->n, fll_div->k,
 362                  fll_div->fll_fratio, fll_div->fll_outdiv,
 363                  fll_div->fll_clk_ref_div);
 364
 365         return 0;
 366 }
 367
 368 static int _wm8993_set_fll(struct snd_soc_codec *codec, int fll_id, int source,
 369                           unsigned int Fref, unsigned int Fout)
 370 {
 371         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
 372         u16 reg1, reg4, reg5;
 373         struct _fll_div fll_div;
 374         int ret;
 375
 376         /* Any change? */
 377         if (Fref == wm8993->fll_fref && Fout == wm8993->fll_fout)
 378                 return 0;
 379
 380         /* Disable the FLL */
 381         if (Fout == 0) {
 382                 dev_dbg(codec->dev, "FLL disabled\n");
 383                 wm8993->fll_fref = 0;
 384                 wm8993->fll_fout = 0;
 385
 386                 reg1 = snd_soc_read(codec, WM8993_FLL_CONTROL_1);
 387                 reg1 &= ~WM8993_FLL_ENA;
 388                 snd_soc_write(codec, WM8993_FLL_CONTROL_1, reg1);
 389
 390                 return 0;
 391         }
 392
 393         ret = fll_factors(&fll_div, Fref, Fout);
 394         if (ret != 0)
 395                 return ret;
 396
 397         reg5 = snd_soc_read(codec, WM8993_FLL_CONTROL_5);
 398         reg5 &= ~WM8993_FLL_CLK_SRC_MASK;
 399
 400         switch (fll_id) {
 401         case WM8993_FLL_MCLK:
 402                 break;
 403
 404         case WM8993_FLL_LRCLK:
 405                 reg5 |= 1;
 406                 break;
 407
 408         case WM8993_FLL_BCLK:
 409                 reg5 |= 2;
 410                 break;
 411
 412         default:
 413                 dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id);
 414                 return -EINVAL;
 415         }
 416
 417         /* Any FLL configuration change requires that the FLL be
 418          * disabled first. */
 419         reg1 = snd_soc_read(codec, WM8993_FLL_CONTROL_1);
 420         reg1 &= ~WM8993_FLL_ENA;
 421         snd_soc_write(codec, WM8993_FLL_CONTROL_1, reg1);
 422
 423         /* Apply the configuration */
 424         if (fll_div.k)
 425                 reg1 |= WM8993_FLL_FRAC_MASK;
 426         else
 427                 reg1 &= ~WM8993_FLL_FRAC_MASK;
 428         snd_soc_write(codec, WM8993_FLL_CONTROL_1, reg1);
 429
 430         snd_soc_write(codec, WM8993_FLL_CONTROL_2,
 431                       (fll_div.fll_outdiv << WM8993_FLL_OUTDIV_SHIFT) |
 432                       (fll_div.fll_fratio << WM8993_FLL_FRATIO_SHIFT));
 433         snd_soc_write(codec, WM8993_FLL_CONTROL_3, fll_div.k);
 434
 435         reg4 = snd_soc_read(codec, WM8993_FLL_CONTROL_4);
 436         reg4 &= ~WM8993_FLL_N_MASK;
 437         reg4 |= fll_div.n << WM8993_FLL_N_SHIFT;
 438         snd_soc_write(codec, WM8993_FLL_CONTROL_4, reg4);
 439
 440         reg5 &= ~WM8993_FLL_CLK_REF_DIV_MASK;
 441         reg5 |= fll_div.fll_clk_ref_div << WM8993_FLL_CLK_REF_DIV_SHIFT;
 442         snd_soc_write(codec, WM8993_FLL_CONTROL_5, reg5);
 443
 444         /* Enable the FLL */
 445         snd_soc_write(codec, WM8993_FLL_CONTROL_1, reg1 | WM8993_FLL_ENA);
 446
 447         dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
 448
 449         wm8993->fll_fref = Fref;
 450         wm8993->fll_fout = Fout;
 451         wm8993->fll_src = source;
 452
 453         return 0;
 454 }
 455
 456 static int wm8993_set_fll(struct snd_soc_dai *dai, int fll_id, int source,
 457                           unsigned int Fref, unsigned int Fout)
 458 {
 459         return _wm8993_set_fll(dai->codec, fll_id, source, Fref, Fout);
 460 }
 461
 462 static int configure_clock(struct snd_soc_codec *codec)
 463 {
 464         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
 465         unsigned int reg;
 466
 467         /* This should be done on init() for bypass paths */
 468         switch (wm8993->sysclk_source) {
 469         case WM8993_SYSCLK_MCLK:
 470                 dev_dbg(codec->dev, "Using %dHz MCLK\n", wm8993->mclk_rate);
 471
 472                 reg = snd_soc_read(codec, WM8993_CLOCKING_2);
 473                 reg &= ~(WM8993_MCLK_DIV | WM8993_SYSCLK_SRC);
 474                 if (wm8993->mclk_rate > 13500000) {
 475                         reg |= WM8993_MCLK_DIV;
 476                         wm8993->sysclk_rate = wm8993->mclk_rate / 2;
 477                 } else {
 478                         reg &= ~WM8993_MCLK_DIV;
 479                         wm8993->sysclk_rate = wm8993->mclk_rate;
 480                 }
 481                 snd_soc_write(codec, WM8993_CLOCKING_2, reg);
 482                 break;
 483
 484         case WM8993_SYSCLK_FLL:
 485                 dev_dbg(codec->dev, "Using %dHz FLL clock\n",
 486                         wm8993->fll_fout);
 487
 488                 reg = snd_soc_read(codec, WM8993_CLOCKING_2);
 489                 reg |= WM8993_SYSCLK_SRC;
 490                 if (wm8993->fll_fout > 13500000) {
 491                         reg |= WM8993_MCLK_DIV;
 492                         wm8993->sysclk_rate = wm8993->fll_fout / 2;
 493                 } else {
 494                         reg &= ~WM8993_MCLK_DIV;
 495                         wm8993->sysclk_rate = wm8993->fll_fout;
 496                 }
 497                 snd_soc_write(codec, WM8993_CLOCKING_2, reg);
 498                 break;
 499
 500         default:
 501                 dev_err(codec->dev, "System clock not configured\n");
 502                 return -EINVAL;
 503         }
 504
 505         dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm8993->sysclk_rate);
 506
 507         return 0;
 508 }
 509
 510 static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0);
 511 static const DECLARE_TLV_DB_SCALE(drc_comp_threash, -4500, 75, 0);
 512 static const DECLARE_TLV_DB_SCALE(drc_comp_amp, -2250, 75, 0);
 513 static const DECLARE_TLV_DB_SCALE(drc_min_tlv, -1800, 600, 0);
 514 static const unsigned int drc_max_tlv[] = {
 515         TLV_DB_RANGE_HEAD(4),
 516         0, 2, TLV_DB_SCALE_ITEM(1200, 600, 0),
 517         3, 3, TLV_DB_SCALE_ITEM(3600, 0, 0),
 518 };
 519 static const DECLARE_TLV_DB_SCALE(drc_qr_tlv, 1200, 600, 0);
 520 static const DECLARE_TLV_DB_SCALE(drc_startup_tlv, -1800, 300, 0);
 521 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
 522 static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
 523 static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
 524
 525 static const char *dac_deemph_text[] = {
 526         "None",
 527         "32kHz",
 528         "44.1kHz",
 529         "48kHz",
 530 };
 531
 532 static const struct soc_enum dac_deemph =
 533         SOC_ENUM_SINGLE(WM8993_DAC_CTRL, 4, 4, dac_deemph_text);
 534
 535 static const char *adc_hpf_text[] = {
 536         "Hi-Fi",
 537         "Voice 1",
 538         "Voice 2",
 539         "Voice 3",
 540 };
 541
 542 static const struct soc_enum adc_hpf =
 543         SOC_ENUM_SINGLE(WM8993_ADC_CTRL, 5, 4, adc_hpf_text);
 544
 545 static const char *drc_path_text[] = {
 546         "ADC",
 547         "DAC"
 548 };
 549
 550 static const struct soc_enum drc_path =
 551         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_1, 14, 2, drc_path_text);
 552
 553 static const char *drc_r0_text[] = {
 554         "1",
 555         "1/2",
 556         "1/4",
 557         "1/8",
 558         "1/16",
 559         "0",
 560 };
 561
 562 static const struct soc_enum drc_r0 =
 563         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 8, 6, drc_r0_text);
 564
 565 static const char *drc_r1_text[] = {
 566         "1",
 567         "1/2",
 568         "1/4",
 569         "1/8",
 570         "0",
 571 };
 572
 573 static const struct soc_enum drc_r1 =
 574         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_4, 13, 5, drc_r1_text);
 575
 576 static const char *drc_attack_text[] = {
 577         "Reserved",
 578         "181us",
 579         "363us",
 580         "726us",
 581         "1.45ms",
 582         "2.9ms",
 583         "5.8ms",
 584         "11.6ms",
 585         "23.2ms",
 586         "46.4ms",
 587         "92.8ms",
 588         "185.6ms",
 589 };
 590
 591 static const struct soc_enum drc_attack =
 592         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_2, 12, 12, drc_attack_text);
 593
 594 static const char *drc_decay_text[] = {
 595         "186ms",
 596         "372ms",
 597         "743ms",
 598         "1.49s",
 599         "2.97ms",
 600         "5.94ms",
 601         "11.89ms",
 602         "23.78ms",
 603         "47.56ms",
 604 };
 605
 606 static const struct soc_enum drc_decay =
 607         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_2, 8, 9, drc_decay_text);
 608
 609 static const char *drc_ff_text[] = {
 610         "5 samples",
 611         "9 samples",
 612 };
 613
 614 static const struct soc_enum drc_ff =
 615         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 7, 2, drc_ff_text);
 616
 617 static const char *drc_qr_rate_text[] = {
 618         "0.725ms",
 619         "1.45ms",
 620         "5.8ms",
 621 };
 622
 623 static const struct soc_enum drc_qr_rate =
 624         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 0, 3, drc_qr_rate_text);
 625
 626 static const char *drc_smooth_text[] = {
 627         "Low",
 628         "Medium",
 629         "High",
 630 };
 631
 632 static const struct soc_enum drc_smooth =
 633         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_1, 4, 3, drc_smooth_text);
 634
 635 static const struct snd_kcontrol_new wm8993_snd_controls[] = {
 636 SOC_DOUBLE_TLV("Digital Sidetone Volume", WM8993_DIGITAL_SIDE_TONE,
 637                5, 9, 12, 0, sidetone_tlv),
 638
 639 SOC_SINGLE("DRC Switch", WM8993_DRC_CONTROL_1, 15, 1, 0),
 640 SOC_ENUM("DRC Path", drc_path),
 641 SOC_SINGLE_TLV("DRC Compressor Threshold Volume", WM8993_DRC_CONTROL_2,
 642                2, 60, 1, drc_comp_threash),
 643 SOC_SINGLE_TLV("DRC Compressor Amplitude Volume", WM8993_DRC_CONTROL_3,
 644                11, 30, 1, drc_comp_amp),
 645 SOC_ENUM("DRC R0", drc_r0),
 646 SOC_ENUM("DRC R1", drc_r1),
 647 SOC_SINGLE_TLV("DRC Minimum Volume", WM8993_DRC_CONTROL_1, 2, 3, 1,
 648                drc_min_tlv),
 649 SOC_SINGLE_TLV("DRC Maximum Volume", WM8993_DRC_CONTROL_1, 0, 3, 0,
 650                drc_max_tlv),
 651 SOC_ENUM("DRC Attack Rate", drc_attack),
 652 SOC_ENUM("DRC Decay Rate", drc_decay),
 653 SOC_ENUM("DRC FF Delay", drc_ff),
 654 SOC_SINGLE("DRC Anti-clip Switch", WM8993_DRC_CONTROL_1, 9, 1, 0),
 655 SOC_SINGLE("DRC Quick Release Switch", WM8993_DRC_CONTROL_1, 10, 1, 0),
 656 SOC_SINGLE_TLV("DRC Quick Release Volume", WM8993_DRC_CONTROL_3, 2, 3, 0,
 657                drc_qr_tlv),
 658 SOC_ENUM("DRC Quick Release Rate", drc_qr_rate),
 659 SOC_SINGLE("DRC Smoothing Switch", WM8993_DRC_CONTROL_1, 11, 1, 0),
 660 SOC_SINGLE("DRC Smoothing Hysteresis Switch", WM8993_DRC_CONTROL_1, 8, 1, 0),
 661 SOC_ENUM("DRC Smoothing Hysteresis Threshold", drc_smooth),
 662 SOC_SINGLE_TLV("DRC Startup Volume", WM8993_DRC_CONTROL_4, 8, 18, 0,
 663                drc_startup_tlv),
 664
 665 SOC_SINGLE("EQ Switch", WM8993_EQ1, 0, 1, 0),
 666
 667 SOC_DOUBLE_R_TLV("Capture Volume", WM8993_LEFT_ADC_DIGITAL_VOLUME,
 668                  WM8993_RIGHT_ADC_DIGITAL_VOLUME, 1, 96, 0, digital_tlv),
 669 SOC_SINGLE("ADC High Pass Filter Switch", WM8993_ADC_CTRL, 8, 1, 0),
 670 SOC_ENUM("ADC High Pass Filter Mode", adc_hpf),
 671
 672 SOC_DOUBLE_R_TLV("Playback Volume", WM8993_LEFT_DAC_DIGITAL_VOLUME,
 673                  WM8993_RIGHT_DAC_DIGITAL_VOLUME, 1, 96, 0, digital_tlv),
 674 SOC_SINGLE_TLV("Playback Boost Volume", WM8993_AUDIO_INTERFACE_2, 10, 3, 0,
 675                dac_boost_tlv),
 676 SOC_ENUM("DAC Deemphasis", dac_deemph),
 677
 678 SOC_SINGLE_TLV("SPKL DAC Volume", WM8993_SPKMIXL_ATTENUATION,
 679                2, 1, 1, wm_hubs_spkmix_tlv),
 680
 681 SOC_SINGLE_TLV("SPKR DAC Volume", WM8993_SPKMIXR_ATTENUATION,
 682                2, 1, 1, wm_hubs_spkmix_tlv),
 683 };
 684
 685 static const struct snd_kcontrol_new wm8993_eq_controls[] = {
 686 SOC_SINGLE_TLV("EQ1 Volume", WM8993_EQ2, 0, 24, 0, eq_tlv),
 687 SOC_SINGLE_TLV("EQ2 Volume", WM8993_EQ3, 0, 24, 0, eq_tlv),
 688 SOC_SINGLE_TLV("EQ3 Volume", WM8993_EQ4, 0, 24, 0, eq_tlv),
 689 SOC_SINGLE_TLV("EQ4 Volume", WM8993_EQ5, 0, 24, 0, eq_tlv),
 690 SOC_SINGLE_TLV("EQ5 Volume", WM8993_EQ6, 0, 24, 0, eq_tlv),
 691 };
 692
 693 static int clk_sys_event(struct snd_soc_dapm_widget *w,
 694                          struct snd_kcontrol *kcontrol, int event)
 695 {
 696         struct snd_soc_codec *codec = w->codec;
 697
 698         switch (event) {
 699         case SND_SOC_DAPM_PRE_PMU:
 700                 return configure_clock(codec);
 701
 702         case SND_SOC_DAPM_POST_PMD:
 703                 break;
 704         }
 705
 706         return 0;
 707 }
 708
 709 /*
 710  * When used with DAC outputs only the WM8993 charge pump supports
 711  * operation in class W mode, providing very low power consumption
 712  * when used with digital sources.  Enable and disable this mode
 713  * automatically depending on the mixer configuration.
 714  *
 715  * Currently the only supported paths are the direct DAC->headphone
 716  * paths (which provide minimum power consumption anyway).
 717  */
 718 static int class_w_put(struct snd_kcontrol *kcontrol,
 719                        struct snd_ctl_elem_value *ucontrol)
 720 {
 721         struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
 722         struct snd_soc_codec *codec = widget->codec;
 723         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
 724         int ret;
 725
 726         /* Turn it off if we're using the main output mixer */
 727         if (ucontrol->value.integer.value[0] == 0) {
 728                 if (wm8993->class_w_users == 0) {
 729                         dev_dbg(codec->dev, "Disabling Class W\n");
 730                         snd_soc_update_bits(codec, WM8993_CLASS_W_0,
 731                                             WM8993_CP_DYN_FREQ |
 732                                             WM8993_CP_DYN_V,
 733                                             0);
 734                 }
 735                 wm8993->class_w_users++;
 736                 wm8993->hubs_data.class_w = true;
 737         }
 738
 739         /* Implement the change */
 740         ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
 741
 742         /* Enable it if we're using the direct DAC path */
 743         if (ucontrol->value.integer.value[0] == 1) {
 744                 if (wm8993->class_w_users == 1) {
 745                         dev_dbg(codec->dev, "Enabling Class W\n");
 746                         snd_soc_update_bits(codec, WM8993_CLASS_W_0,
 747                                             WM8993_CP_DYN_FREQ |
 748                                             WM8993_CP_DYN_V,
 749                                             WM8993_CP_DYN_FREQ |
 750                                             WM8993_CP_DYN_V);
 751                 }
 752                 wm8993->class_w_users--;
 753                 wm8993->hubs_data.class_w = false;
 754         }
 755
 756         dev_dbg(codec->dev, "Indirect DAC use count now %d\n",
 757                 wm8993->class_w_users);
 758
 759         return ret;
 760 }
 761
 762 #define SOC_DAPM_ENUM_W(xname, xenum) \
 763 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 764         .info = snd_soc_info_enum_double, \
 765         .get = snd_soc_dapm_get_enum_double, \
 766         .put = class_w_put, \
 767         .private_value = (unsigned long)&xenum }
 768
 769 static const char *hp_mux_text[] = {
 770         "Mixer",
 771         "DAC",
 772 };
 773
 774 static const struct soc_enum hpl_enum =
 775         SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER1, 8, 2, hp_mux_text);
 776
 777 static const struct snd_kcontrol_new hpl_mux =
 778         SOC_DAPM_ENUM_W("Left Headphone Mux", hpl_enum);
 779
 780 static const struct soc_enum hpr_enum =
 781         SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER2, 8, 2, hp_mux_text);
 782
 783 static const struct snd_kcontrol_new hpr_mux =
 784         SOC_DAPM_ENUM_W("Right Headphone Mux", hpr_enum);
 785
 786 static const struct snd_kcontrol_new left_speaker_mixer[] = {
 787 SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 7, 1, 0),
 788 SOC_DAPM_SINGLE("IN1LP Switch", WM8993_SPEAKER_MIXER, 5, 1, 0),
 789 SOC_DAPM_SINGLE("Output Switch", WM8993_SPEAKER_MIXER, 3, 1, 0),
 790 SOC_DAPM_SINGLE("DAC Switch", WM8993_SPEAKER_MIXER, 6, 1, 0),
 791 };
 792
 793 static const struct snd_kcontrol_new right_speaker_mixer[] = {
 794 SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 6, 1, 0),
 795 SOC_DAPM_SINGLE("IN1RP Switch", WM8993_SPEAKER_MIXER, 4, 1, 0),
 796 SOC_DAPM_SINGLE("Output Switch", WM8993_SPEAKER_MIXER, 2, 1, 0),
 797 SOC_DAPM_SINGLE("DAC Switch", WM8993_SPEAKER_MIXER, 0, 1, 0),
 798 };
 799
 800 static const char *aif_text[] = {
 801         "Left", "Right"
 802 };
 803
 804 static const struct soc_enum aifoutl_enum =
 805         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_1, 15, 2, aif_text);
 806
 807 static const struct snd_kcontrol_new aifoutl_mux =
 808         SOC_DAPM_ENUM("AIFOUTL Mux", aifoutl_enum);
 809
 810 static const struct soc_enum aifoutr_enum =
 811         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_1, 14, 2, aif_text);
 812
 813 static const struct snd_kcontrol_new aifoutr_mux =
 814         SOC_DAPM_ENUM("AIFOUTR Mux", aifoutr_enum);
 815
 816 static const struct soc_enum aifinl_enum =
 817         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_2, 15, 2, aif_text);
 818
 819 static const struct snd_kcontrol_new aifinl_mux =
 820         SOC_DAPM_ENUM("AIFINL Mux", aifinl_enum);
 821
 822 static const struct soc_enum aifinr_enum =
 823         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_2, 14, 2, aif_text);
 824
 825 static const struct snd_kcontrol_new aifinr_mux =
 826         SOC_DAPM_ENUM("AIFINR Mux", aifinr_enum);
 827
 828 static const char *sidetone_text[] = {
 829         "None", "Left", "Right"
 830 };
 831
 832 static const struct soc_enum sidetonel_enum =
 833         SOC_ENUM_SINGLE(WM8993_DIGITAL_SIDE_TONE, 2, 3, sidetone_text);
 834
 835 static const struct snd_kcontrol_new sidetonel_mux =
 836         SOC_DAPM_ENUM("Left Sidetone", sidetonel_enum);
 837
 838 static const struct soc_enum sidetoner_enum =
 839         SOC_ENUM_SINGLE(WM8993_DIGITAL_SIDE_TONE, 0, 3, sidetone_text);
 840
 841 static const struct snd_kcontrol_new sidetoner_mux =
 842         SOC_DAPM_ENUM("Right Sidetone", sidetoner_enum);
 843
 844 static const struct snd_soc_dapm_widget wm8993_dapm_widgets[] = {
 845 SND_SOC_DAPM_SUPPLY("CLK_SYS", WM8993_BUS_CONTROL_1, 1, 0, clk_sys_event,
 846                     SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 847 SND_SOC_DAPM_SUPPLY("TOCLK", WM8993_CLOCKING_1, 14, 0, NULL, 0),
 848 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8993_CLOCKING_3, 0, 0, NULL, 0),
 849
 850 SND_SOC_DAPM_ADC("ADCL", NULL, WM8993_POWER_MANAGEMENT_2, 1, 0),
 851 SND_SOC_DAPM_ADC("ADCR", NULL, WM8993_POWER_MANAGEMENT_2, 0, 0),
 852
 853 SND_SOC_DAPM_MUX("AIFOUTL Mux", SND_SOC_NOPM, 0, 0, &aifoutl_mux),
 854 SND_SOC_DAPM_MUX("AIFOUTR Mux", SND_SOC_NOPM, 0, 0, &aifoutr_mux),
 855
 856 SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0),
 857 SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0),
 858
 859 SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
 860 SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
 861
 862 SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &aifinl_mux),
 863 SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &aifinr_mux),
 864
 865 SND_SOC_DAPM_MUX("DACL Sidetone", SND_SOC_NOPM, 0, 0, &sidetonel_mux),
 866 SND_SOC_DAPM_MUX("DACR Sidetone", SND_SOC_NOPM, 0, 0, &sidetoner_mux),
 867
 868 SND_SOC_DAPM_DAC("DACL", NULL, WM8993_POWER_MANAGEMENT_3, 1, 0),
 869 SND_SOC_DAPM_DAC("DACR", NULL, WM8993_POWER_MANAGEMENT_3, 0, 0),
 870
 871 SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0, &hpl_mux),
 872 SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0, &hpr_mux),
 873
 874 SND_SOC_DAPM_MIXER("SPKL", WM8993_POWER_MANAGEMENT_3, 8, 0,
 875                    left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)),
 876 SND_SOC_DAPM_MIXER("SPKR", WM8993_POWER_MANAGEMENT_3, 9, 0,
 877                    right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer)),
 878
 879 };
 880
 881 static const struct snd_soc_dapm_route routes[] = {
 882         { "ADCL", NULL, "CLK_SYS" },
 883         { "ADCL", NULL, "CLK_DSP" },
 884         { "ADCR", NULL, "CLK_SYS" },
 885         { "ADCR", NULL, "CLK_DSP" },
 886
 887         { "AIFOUTL Mux", "Left", "ADCL" },
 888         { "AIFOUTL Mux", "Right", "ADCR" },
 889         { "AIFOUTR Mux", "Left", "ADCL" },
 890         { "AIFOUTR Mux", "Right", "ADCR" },
 891
 892         { "AIFOUTL", NULL, "AIFOUTL Mux" },
 893         { "AIFOUTR", NULL, "AIFOUTR Mux" },
 894
 895         { "DACL Mux", "Left", "AIFINL" },
 896         { "DACL Mux", "Right", "AIFINR" },
 897         { "DACR Mux", "Left", "AIFINL" },
 898         { "DACR Mux", "Right", "AIFINR" },
 899
 900         { "DACL Sidetone", "Left", "ADCL" },
 901         { "DACL Sidetone", "Right", "ADCR" },
 902         { "DACR Sidetone", "Left", "ADCL" },
 903         { "DACR Sidetone", "Right", "ADCR" },
 904
 905         { "DACL", NULL, "CLK_SYS" },
 906         { "DACL", NULL, "CLK_DSP" },
 907         { "DACL", NULL, "DACL Mux" },
 908         { "DACL", NULL, "DACL Sidetone" },
 909         { "DACR", NULL, "CLK_SYS" },
 910         { "DACR", NULL, "CLK_DSP" },
 911         { "DACR", NULL, "DACR Mux" },
 912         { "DACR", NULL, "DACR Sidetone" },
 913
 914         { "Left Output Mixer", "DAC Switch", "DACL" },
 915
 916         { "Right Output Mixer", "DAC Switch", "DACR" },
 917
 918         { "Left Output PGA", NULL, "CLK_SYS" },
 919
 920         { "Right Output PGA", NULL, "CLK_SYS" },
 921
 922         { "SPKL", "DAC Switch", "DACL" },
 923         { "SPKL", NULL, "CLK_SYS" },
 924
 925         { "SPKR", "DAC Switch", "DACR" },
 926         { "SPKR", NULL, "CLK_SYS" },
 927
 928         { "Left Headphone Mux", "DAC", "DACL" },
 929         { "Right Headphone Mux", "DAC", "DACR" },
 930 };
 931
 932 static void wm8993_cache_restore(struct snd_soc_codec *codec)
 933 {
 934         u16 *cache = codec->reg_cache;
 935         int i;
 936
 937         if (!codec->cache_sync)
 938                 return;
 939
 940         /* Reenable hardware writes */
 941         codec->cache_only = 0;
 942
 943         /* Restore the register settings */
 944         for (i = 1; i < WM8993_MAX_REGISTER; i++) {
 945                 if (cache[i] == wm8993_reg_defaults[i])
 946                         continue;
 947                 snd_soc_write(codec, i, cache[i]);
 948         }
 949
 950         /* We're in sync again */
 951         codec->cache_sync = 0;
 952 }
 953
 954 static int wm8993_set_bias_level(struct snd_soc_codec *codec,
 955                                  enum snd_soc_bias_level level)
 956 {
 957         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
 958         int ret;
 959
 960         switch (level) {
 961         case SND_SOC_BIAS_ON:
 962         case SND_SOC_BIAS_PREPARE:
 963                 /* VMID=2*40k */
 964                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
 965                                     WM8993_VMID_SEL_MASK, 0x2);
 966                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_2,
 967                                     WM8993_TSHUT_ENA, WM8993_TSHUT_ENA);
 968                 break;
 969
 970         case SND_SOC_BIAS_STANDBY:
 971                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 972                         ret = regulator_bulk_enable(ARRAY_SIZE(wm8993->supplies),
 973                                                     wm8993->supplies);
 974                         if (ret != 0)
 975                                 return ret;
 976
 977                         wm8993_cache_restore(codec);
 978
 979                         /* Tune DC servo configuration */
 980                         snd_soc_write(codec, 0x44, 3);
 981                         snd_soc_write(codec, 0x56, 3);
 982                         snd_soc_write(codec, 0x44, 0);
 983
 984                         /* Bring up VMID with fast soft start */
 985                         snd_soc_update_bits(codec, WM8993_ANTIPOP2,
 986                                             WM8993_STARTUP_BIAS_ENA |
 987                                             WM8993_VMID_BUF_ENA |
 988                                             WM8993_VMID_RAMP_MASK |
 989                                             WM8993_BIAS_SRC,
 990                                             WM8993_STARTUP_BIAS_ENA |
 991                                             WM8993_VMID_BUF_ENA |
 992                                             WM8993_VMID_RAMP_MASK |
 993                                             WM8993_BIAS_SRC);
 994
 995                         /* If either line output is single ended we
 996                          * need the VMID buffer */
 997                         if (!wm8993->pdata.lineout1_diff ||
 998                             !wm8993->pdata.lineout2_diff)
 999                                 snd_soc_update_bits(codec, WM8993_ANTIPOP1,
1000                                                  WM8993_LINEOUT_VMID_BUF_ENA,
1001                                                  WM8993_LINEOUT_VMID_BUF_ENA);
1002
1003                         /* VMID=2*40k */
1004                         snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
1005                                             WM8993_VMID_SEL_MASK |
1006                                             WM8993_BIAS_ENA,
1007                                             WM8993_BIAS_ENA | 0x2);
1008                         msleep(32);
1009
1010                         /* Switch to normal bias */
1011                         snd_soc_update_bits(codec, WM8993_ANTIPOP2,
1012                                             WM8993_BIAS_SRC |
1013                                             WM8993_STARTUP_BIAS_ENA, 0);
1014                 }
1015
1016                 /* VMID=2*240k */
1017                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
1018                                     WM8993_VMID_SEL_MASK, 0x4);
1019
1020                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_2,
1021                                     WM8993_TSHUT_ENA, 0);
1022                 break;
1023
1024         case SND_SOC_BIAS_OFF:
1025                 snd_soc_update_bits(codec, WM8993_ANTIPOP1,
1026                                     WM8993_LINEOUT_VMID_BUF_ENA, 0);
1027
1028                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
1029                                     WM8993_VMID_SEL_MASK | WM8993_BIAS_ENA,
1030                                     0);
1031
1032                 snd_soc_update_bits(codec, WM8993_ANTIPOP2,
1033                                     WM8993_STARTUP_BIAS_ENA |
1034                                     WM8993_VMID_BUF_ENA |
1035                                     WM8993_VMID_RAMP_MASK |
1036                                     WM8993_BIAS_SRC, 0);
1037
1038 #ifdef CONFIG_REGULATOR
1039                /* Post 2.6.34 we will be able to get a callback when
1040                 * the regulators are disabled which we can use but
1041                 * for now just assume that the power will be cut if
1042                 * the regulator API is in use.
1043                 */
1044                 codec->cache_sync = 1;
1045 #endif
1046
1047                 regulator_bulk_disable(ARRAY_SIZE(wm8993->supplies),
1048                                        wm8993->supplies);
1049                 break;
1050         }
1051
1052         codec->dapm.bias_level = level;
1053
1054         return 0;
1055 }
1056
1057 static int wm8993_set_sysclk(struct snd_soc_dai *codec_dai,
1058                              int clk_id, unsigned int freq, int dir)
1059 {
1060         struct snd_soc_codec *codec = codec_dai->codec;
1061         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1062
1063         switch (clk_id) {
1064         case WM8993_SYSCLK_MCLK:
1065                 wm8993->mclk_rate = freq;
1066         case WM8993_SYSCLK_FLL:
1067                 wm8993->sysclk_source = clk_id;
1068                 break;
1069
1070         default:
1071                 return -EINVAL;
1072         }
1073
1074         return 0;
1075 }
1076
1077 static int wm8993_set_dai_fmt(struct snd_soc_dai *dai,
1078                               unsigned int fmt)
1079 {
1080         struct snd_soc_codec *codec = dai->codec;
1081         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1082         unsigned int aif1 = snd_soc_read(codec, WM8993_AUDIO_INTERFACE_1);
1083         unsigned int aif4 = snd_soc_read(codec, WM8993_AUDIO_INTERFACE_4);
1084
1085         aif1 &= ~(WM8993_BCLK_DIR | WM8993_AIF_BCLK_INV |
1086                   WM8993_AIF_LRCLK_INV | WM8993_AIF_FMT_MASK);
1087         aif4 &= ~WM8993_LRCLK_DIR;
1088
1089         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1090         case SND_SOC_DAIFMT_CBS_CFS:
1091                 wm8993->master = 0;
1092                 break;
1093         case SND_SOC_DAIFMT_CBS_CFM:
1094                 aif4 |= WM8993_LRCLK_DIR;
1095                 wm8993->master = 1;
1096                 break;
1097         case SND_SOC_DAIFMT_CBM_CFS:
1098                 aif1 |= WM8993_BCLK_DIR;
1099                 wm8993->master = 1;
1100                 break;
1101         case SND_SOC_DAIFMT_CBM_CFM:
1102                 aif1 |= WM8993_BCLK_DIR;
1103                 aif4 |= WM8993_LRCLK_DIR;
1104                 wm8993->master = 1;
1105                 break;
1106         default:
1107                 return -EINVAL;
1108         }
1109
1110         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1111         case SND_SOC_DAIFMT_DSP_B:
1112                 aif1 |= WM8993_AIF_LRCLK_INV;
1113         case SND_SOC_DAIFMT_DSP_A:
1114                 aif1 |= 0x18;
1115                 break;
1116         case SND_SOC_DAIFMT_I2S:
1117                 aif1 |= 0x10;
1118                 break;
1119         case SND_SOC_DAIFMT_RIGHT_J:
1120                 break;
1121         case SND_SOC_DAIFMT_LEFT_J:
1122                 aif1 |= 0x8;
1123                 break;
1124         default:
1125                 return -EINVAL;
1126         }
1127
1128         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1129         case SND_SOC_DAIFMT_DSP_A:
1130         case SND_SOC_DAIFMT_DSP_B:
1131                 /* frame inversion not valid for DSP modes */
1132                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1133                 case SND_SOC_DAIFMT_NB_NF:
1134                         break;
1135                 case SND_SOC_DAIFMT_IB_NF:
1136                         aif1 |= WM8993_AIF_BCLK_INV;
1137                         break;
1138                 default:
1139                         return -EINVAL;
1140                 }
1141                 break;
1142
1143         case SND_SOC_DAIFMT_I2S:
1144         case SND_SOC_DAIFMT_RIGHT_J:
1145         case SND_SOC_DAIFMT_LEFT_J:
1146                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1147                 case SND_SOC_DAIFMT_NB_NF:
1148                         break;
1149                 case SND_SOC_DAIFMT_IB_IF:
1150                         aif1 |= WM8993_AIF_BCLK_INV | WM8993_AIF_LRCLK_INV;
1151                         break;
1152                 case SND_SOC_DAIFMT_IB_NF:
1153                         aif1 |= WM8993_AIF_BCLK_INV;
1154                         break;
1155                 case SND_SOC_DAIFMT_NB_IF:
1156                         aif1 |= WM8993_AIF_LRCLK_INV;
1157                         break;
1158                 default:
1159                         return -EINVAL;
1160                 }
1161                 break;
1162         default:
1163                 return -EINVAL;
1164         }
1165
1166         snd_soc_write(codec, WM8993_AUDIO_INTERFACE_1, aif1);
1167         snd_soc_write(codec, WM8993_AUDIO_INTERFACE_4, aif4);
1168
1169         return 0;
1170 }
1171
1172 static int wm8993_hw_params(struct snd_pcm_substream *substream,
1173                             struct snd_pcm_hw_params *params,
1174                             struct snd_soc_dai *dai)
1175 {
1176         struct snd_soc_codec *codec = dai->codec;
1177         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1178         int ret, i, best, best_val, cur_val;
1179         unsigned int clocking1, clocking3, aif1, aif4;
1180
1181         clocking1 = snd_soc_read(codec, WM8993_CLOCKING_1);
1182         clocking1 &= ~WM8993_BCLK_DIV_MASK;
1183
1184         clocking3 = snd_soc_read(codec, WM8993_CLOCKING_3);
1185         clocking3 &= ~(WM8993_CLK_SYS_RATE_MASK | WM8993_SAMPLE_RATE_MASK);
1186
1187         aif1 = snd_soc_read(codec, WM8993_AUDIO_INTERFACE_1);
1188         aif1 &= ~WM8993_AIF_WL_MASK;
1189
1190         aif4 = snd_soc_read(codec, WM8993_AUDIO_INTERFACE_4);
1191         aif4 &= ~WM8993_LRCLK_RATE_MASK;
1192
1193         /* What BCLK do we need? */
1194         wm8993->fs = params_rate(params);
1195         wm8993->bclk = 2 * wm8993->fs;
1196         if (wm8993->tdm_slots) {
1197                 dev_dbg(codec->dev, "Configuring for %d %d bit TDM slots\n",
1198                         wm8993->tdm_slots, wm8993->tdm_width);
1199                 wm8993->bclk *= wm8993->tdm_width * wm8993->tdm_slots;
1200         } else {
1201                 switch (params_format(params)) {
1202                 case SNDRV_PCM_FORMAT_S16_LE:
1203                         wm8993->bclk *= 16;
1204                         break;
1205                 case SNDRV_PCM_FORMAT_S20_3LE:
1206                         wm8993->bclk *= 20;
1207                         aif1 |= 0x8;
1208                         break;
1209                 case SNDRV_PCM_FORMAT_S24_LE:
1210                         wm8993->bclk *= 24;
1211                         aif1 |= 0x10;
1212                         break;
1213                 case SNDRV_PCM_FORMAT_S32_LE:
1214                         wm8993->bclk *= 32;
1215                         aif1 |= 0x18;
1216                         break;
1217                 default:
1218                         return -EINVAL;
1219                 }
1220         }
1221
1222         dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm8993->bclk);
1223
1224         ret = configure_clock(codec);
1225         if (ret != 0)
1226                 return ret;
1227
1228         /* Select nearest CLK_SYS_RATE */
1229         best = 0;
1230         best_val = abs((wm8993->sysclk_rate / clk_sys_rates[0].ratio)
1231                        - wm8993->fs);
1232         for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
1233                 cur_val = abs((wm8993->sysclk_rate /
1234                                clk_sys_rates[i].ratio) - wm8993->fs);
1235                 if (cur_val < best_val) {
1236                         best = i;
1237                         best_val = cur_val;
1238                 }
1239         }
1240         dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n",
1241                 clk_sys_rates[best].ratio);
1242         clocking3 |= (clk_sys_rates[best].clk_sys_rate
1243                       << WM8993_CLK_SYS_RATE_SHIFT);
1244
1245         /* SAMPLE_RATE */
1246         best = 0;
1247         best_val = abs(wm8993->fs - sample_rates[0].rate);
1248         for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1249                 /* Closest match */
1250                 cur_val = abs(wm8993->fs - sample_rates[i].rate);
1251                 if (cur_val < best_val) {
1252                         best = i;
1253                         best_val = cur_val;
1254                 }
1255         }
1256         dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n",
1257                 sample_rates[best].rate);
1258         clocking3 |= (sample_rates[best].sample_rate
1259                       << WM8993_SAMPLE_RATE_SHIFT);
1260
1261         /* BCLK_DIV */
1262         best = 0;
1263         best_val = INT_MAX;
1264         for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
1265                 cur_val = ((wm8993->sysclk_rate * 10) / bclk_divs[i].div)
1266                         - wm8993->bclk;
1267                 if (cur_val < 0) /* Table is sorted */
1268                         break;
1269                 if (cur_val < best_val) {
1270                         best = i;
1271                         best_val = cur_val;
1272                 }
1273         }
1274         wm8993->bclk = (wm8993->sysclk_rate * 10) / bclk_divs[best].div;
1275         dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
1276                 bclk_divs[best].div, wm8993->bclk);
1277         clocking1 |= bclk_divs[best].bclk_div << WM8993_BCLK_DIV_SHIFT;
1278
1279         /* LRCLK is a simple fraction of BCLK */
1280         dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm8993->bclk / wm8993->fs);
1281         aif4 |= wm8993->bclk / wm8993->fs;
1282
1283         snd_soc_write(codec, WM8993_CLOCKING_1, clocking1);
1284         snd_soc_write(codec, WM8993_CLOCKING_3, clocking3);
1285         snd_soc_write(codec, WM8993_AUDIO_INTERFACE_1, aif1);
1286         snd_soc_write(codec, WM8993_AUDIO_INTERFACE_4, aif4);
1287
1288         /* ReTune Mobile? */
1289         if (wm8993->pdata.num_retune_configs) {
1290                 u16 eq1 = snd_soc_read(codec, WM8993_EQ1);
1291                 struct wm8993_retune_mobile_setting *s;
1292
1293                 best = 0;
1294                 best_val = abs(wm8993->pdata.retune_configs[0].rate
1295                                - wm8993->fs);
1296                 for (i = 0; i < wm8993->pdata.num_retune_configs; i++) {
1297                         cur_val = abs(wm8993->pdata.retune_configs[i].rate
1298                                       - wm8993->fs);
1299                         if (cur_val < best_val) {
1300                                 best_val = cur_val;
1301                                 best = i;
1302                         }
1303                 }
1304                 s = &wm8993->pdata.retune_configs[best];
1305
1306                 dev_dbg(codec->dev, "ReTune Mobile %s tuned for %dHz\n",
1307                         s->name, s->rate);
1308
1309                 /* Disable EQ while we reconfigure */
1310                 snd_soc_update_bits(codec, WM8993_EQ1, WM8993_EQ_ENA, 0);
1311
1312                 for (i = 1; i < ARRAY_SIZE(s->config); i++)
1313                         snd_soc_write(codec, WM8993_EQ1 + i, s->config[i]);
1314
1315                 snd_soc_update_bits(codec, WM8993_EQ1, WM8993_EQ_ENA, eq1);
1316         }
1317
1318         return 0;
1319 }
1320
1321 static int wm8993_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1322 {
1323         struct snd_soc_codec *codec = codec_dai->codec;
1324         unsigned int reg;
1325
1326         reg = snd_soc_read(codec, WM8993_DAC_CTRL);
1327
1328         if (mute)
1329                 reg |= WM8993_DAC_MUTE;
1330         else
1331                 reg &= ~WM8993_DAC_MUTE;
1332
1333         snd_soc_write(codec, WM8993_DAC_CTRL, reg);
1334
1335         return 0;
1336 }
1337
1338 static int wm8993_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
1339                                unsigned int rx_mask, int slots, int slot_width)
1340 {
1341         struct snd_soc_codec *codec = dai->codec;
1342         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1343         int aif1 = 0;
1344         int aif2 = 0;
1345
1346         /* Don't need to validate anything if we're turning off TDM */
1347         if (slots == 0) {
1348                 wm8993->tdm_slots = 0;
1349                 goto out;
1350         }
1351
1352         /* Note that we allow configurations we can't handle ourselves -
1353          * for example, we can generate clocks for slots 2 and up even if
1354          * we can't use those slots ourselves.
1355          */
1356         aif1 |= WM8993_AIFADC_TDM;
1357         aif2 |= WM8993_AIFDAC_TDM;
1358
1359         switch (rx_mask) {
1360         case 3:
1361                 break;
1362         case 0xc:
1363                 aif1 |= WM8993_AIFADC_TDM_CHAN;
1364                 break;
1365         default:
1366                 return -EINVAL;
1367         }
1368
1369
1370         switch (tx_mask) {
1371         case 3:
1372                 break;
1373         case 0xc:
1374                 aif2 |= WM8993_AIFDAC_TDM_CHAN;
1375                 break;
1376         default:
1377                 return -EINVAL;
1378         }
1379
1380 out:
1381         wm8993->tdm_width = slot_width;
1382         wm8993->tdm_slots = slots / 2;
1383
1384         snd_soc_update_bits(codec, WM8993_AUDIO_INTERFACE_1,
1385                             WM8993_AIFADC_TDM | WM8993_AIFADC_TDM_CHAN, aif1);
1386         snd_soc_update_bits(codec, WM8993_AUDIO_INTERFACE_2,
1387                             WM8993_AIFDAC_TDM | WM8993_AIFDAC_TDM_CHAN, aif2);
1388
1389         return 0;
1390 }
1391
1392 static struct snd_soc_dai_ops wm8993_ops = {
1393         .set_sysclk = wm8993_set_sysclk,
1394         .set_fmt = wm8993_set_dai_fmt,
1395         .hw_params = wm8993_hw_params,
1396         .digital_mute = wm8993_digital_mute,
1397         .set_pll = wm8993_set_fll,
1398         .set_tdm_slot = wm8993_set_tdm_slot,
1399 };
1400
1401 #define WM8993_RATES SNDRV_PCM_RATE_8000_48000
1402
1403 #define WM8993_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
1404                         SNDRV_PCM_FMTBIT_S20_3LE |\
1405                         SNDRV_PCM_FMTBIT_S24_LE |\
1406                         SNDRV_PCM_FMTBIT_S32_LE)
1407
1408 static struct snd_soc_dai_driver wm8993_dai = {
1409         .name = "wm8993-hifi",
1410         .playback = {
1411                 .stream_name = "Playback",
1412                 .channels_min = 1,
1413                 .channels_max = 2,
1414                 .rates = WM8993_RATES,
1415                 .formats = WM8993_FORMATS,
1416         },
1417         .capture = {
1418                  .stream_name = "Capture",
1419                  .channels_min = 1,
1420                  .channels_max = 2,
1421                  .rates = WM8993_RATES,
1422                  .formats = WM8993_FORMATS,
1423          },
1424         .ops = &wm8993_ops,
1425         .symmetric_rates = 1,
1426 };
1427
1428 static int wm8993_probe(struct snd_soc_codec *codec)
1429 {
1430         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1431         struct snd_soc_dapm_context *dapm = &codec->dapm;
1432         int ret, i, val;
1433
1434         wm8993->hubs_data.hp_startup_mode = 1;
1435         wm8993->hubs_data.dcs_codes = -2;
1436
1437         ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C);
1438         if (ret != 0) {
1439                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
1440                 return ret;
1441         }
1442
1443         for (i = 0; i < ARRAY_SIZE(wm8993->supplies); i++)
1444                 wm8993->supplies[i].supply = wm8993_supply_names[i];
1445
1446         ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8993->supplies),
1447                                  wm8993->supplies);
1448         if (ret != 0) {
1449                 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
1450                 return ret;
1451         }
1452
1453         ret = regulator_bulk_enable(ARRAY_SIZE(wm8993->supplies),
1454                                     wm8993->supplies);
1455         if (ret != 0) {
1456                 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
1457                 goto err_get;
1458         }
1459
1460         val = snd_soc_read(codec, WM8993_SOFTWARE_RESET);
1461         if (val != wm8993_reg_defaults[WM8993_SOFTWARE_RESET]) {
1462                 dev_err(codec->dev, "Invalid ID register value %x\n", val);
1463                 ret = -EINVAL;
1464                 goto err_enable;
1465         }
1466
1467         ret = snd_soc_write(codec, WM8993_SOFTWARE_RESET, 0xffff);
1468         if (ret != 0)
1469                 goto err_enable;
1470
1471         codec->cache_only = 1;
1472
1473         /* By default we're using the output mixers */
1474         wm8993->class_w_users = 2;
1475
1476         /* Latch volume update bits and default ZC on */
1477         snd_soc_update_bits(codec, WM8993_RIGHT_DAC_DIGITAL_VOLUME,
1478                             WM8993_DAC_VU, WM8993_DAC_VU);
1479         snd_soc_update_bits(codec, WM8993_RIGHT_ADC_DIGITAL_VOLUME,
1480                             WM8993_ADC_VU, WM8993_ADC_VU);
1481
1482         /* Manualy manage the HPOUT sequencing for independent stereo
1483          * control. */
1484         snd_soc_update_bits(codec, WM8993_ANALOGUE_HP_0,
1485                             WM8993_HPOUT1_AUTO_PU, 0);
1486
1487         /* Use automatic clock configuration */
1488         snd_soc_update_bits(codec, WM8993_CLOCKING_4, WM8993_SR_MODE, 0);
1489
1490         wm_hubs_handle_analogue_pdata(codec, wm8993->pdata.lineout1_diff,
1491                                       wm8993->pdata.lineout2_diff,
1492                                       wm8993->pdata.lineout1fb,
1493                                       wm8993->pdata.lineout2fb,
1494                                       wm8993->pdata.jd_scthr,
1495                                       wm8993->pdata.jd_thr,
1496                                       wm8993->pdata.micbias1_lvl,
1497                                       wm8993->pdata.micbias2_lvl);
1498
1499         ret = wm8993_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1500         if (ret != 0)
1501                 goto err_enable;
1502
1503         snd_soc_add_controls(codec, wm8993_snd_controls,
1504                              ARRAY_SIZE(wm8993_snd_controls));
1505         if (wm8993->pdata.num_retune_configs != 0) {
1506                 dev_dbg(codec->dev, "Using ReTune Mobile\n");
1507         } else {
1508                 dev_dbg(codec->dev, "No ReTune Mobile, using normal EQ\n");
1509                 snd_soc_add_controls(codec, wm8993_eq_controls,
1510                                      ARRAY_SIZE(wm8993_eq_controls));
1511         }
1512
1513         snd_soc_dapm_new_controls(dapm, wm8993_dapm_widgets,
1514                                   ARRAY_SIZE(wm8993_dapm_widgets));
1515         wm_hubs_add_analogue_controls(codec);
1516
1517         snd_soc_dapm_add_routes(dapm, routes, ARRAY_SIZE(routes));
1518         wm_hubs_add_analogue_routes(codec, wm8993->pdata.lineout1_diff,
1519                                     wm8993->pdata.lineout2_diff);
1520
1521         return 0;
1522
1523 err_enable:
1524         regulator_bulk_disable(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
1525 err_get:
1526         regulator_bulk_free(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
1527         return ret;
1528 }
1529
1530 static int wm8993_remove(struct snd_soc_codec *codec)
1531 {
1532         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1533
1534         wm8993_set_bias_level(codec, SND_SOC_BIAS_OFF);
1535         regulator_bulk_free(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
1536         return 0;
1537 }
1538
1539 #ifdef CONFIG_PM
1540 static int wm8993_suspend(struct snd_soc_codec *codec, pm_message_t state)
1541 {
1542         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1543         int fll_fout = wm8993->fll_fout;
1544         int fll_fref  = wm8993->fll_fref;
1545         int ret;
1546
1547         /* Stop the FLL in an orderly fashion */
1548         ret = _wm8993_set_fll(codec, 0, 0, 0, 0);
1549         if (ret != 0) {
1550                 dev_err(codec->dev, "Failed to stop FLL\n");
1551                 return ret;
1552         }
1553
1554         wm8993->fll_fout = fll_fout;
1555         wm8993->fll_fref = fll_fref;
1556
1557         wm8993_set_bias_level(codec, SND_SOC_BIAS_OFF);
1558
1559         return 0;
1560 }
1561
1562 static int wm8993_resume(struct snd_soc_codec *codec)
1563 {
1564         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1565         int ret;
1566
1567         wm8993_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1568
1569         /* Restart the FLL? */
1570         if (wm8993->fll_fout) {
1571                 int fll_fout = wm8993->fll_fout;
1572                 int fll_fref  = wm8993->fll_fref;
1573
1574                 wm8993->fll_fref = 0;
1575                 wm8993->fll_fout = 0;
1576
1577                 ret = _wm8993_set_fll(codec, 0, wm8993->fll_src,
1578                                      fll_fref, fll_fout);
1579                 if (ret != 0)
1580                         dev_err(codec->dev, "Failed to restart FLL\n");
1581         }
1582
1583         return 0;
1584 }
1585 #else
1586 #define wm8993_suspend NULL
1587 #define wm8993_resume NULL
1588 #endif
1589
1590 static struct snd_soc_codec_driver soc_codec_dev_wm8993 = {
1591         .probe =        wm8993_probe,
1592         .remove =       wm8993_remove,
1593         .suspend =      wm8993_suspend,
1594         .resume =       wm8993_resume,
1595         .set_bias_level = wm8993_set_bias_level,
1596         .reg_cache_size = ARRAY_SIZE(wm8993_reg_defaults),
1597         .reg_word_size = sizeof(u16),
1598         .reg_cache_default = wm8993_reg_defaults,
1599         .volatile_register = wm8993_volatile,
1600 };
1601
1602 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1603 static __devinit int wm8993_i2c_probe(struct i2c_client *i2c,
1604                                       const struct i2c_device_id *id)
1605 {
1606         struct wm8993_priv *wm8993;
1607         int ret;
1608
1609         wm8993 = kzalloc(sizeof(struct wm8993_priv), GFP_KERNEL);
1610         if (wm8993 == NULL)
1611                 return -ENOMEM;
1612
1613         i2c_set_clientdata(i2c, wm8993);
1614
1615         ret = snd_soc_register_codec(&i2c->dev,
1616                         &soc_codec_dev_wm8993, &wm8993_dai, 1);
1617         if (ret < 0)
1618                 kfree(wm8993);
1619         return ret;
1620 }
1621
1622 static __devexit int wm8993_i2c_remove(struct i2c_client *client)
1623 {
1624         snd_soc_unregister_codec(&client->dev);
1625         kfree(i2c_get_clientdata(client));
1626         return 0;
1627 }
1628
1629 static const struct i2c_device_id wm8993_i2c_id[] = {
1630         { "wm8993", 0 },
1631         { }
1632 };
1633 MODULE_DEVICE_TABLE(i2c, wm8993_i2c_id);
1634
1635 static struct i2c_driver wm8993_i2c_driver = {
1636         .driver = {
1637                 .name = "wm8993-codec",
1638                 .owner = THIS_MODULE,
1639         },
1640         .probe =    wm8993_i2c_probe,
1641         .remove =   __devexit_p(wm8993_i2c_remove),
1642         .id_table = wm8993_i2c_id,
1643 };
1644 #endif
1645
1646 static int __init wm8993_modinit(void)
1647 {
1648         int ret = 0;
1649 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1650         ret = i2c_add_driver(&wm8993_i2c_driver);
1651         if (ret != 0) {
1652                 pr_err("WM8993: Unable to register I2C driver: %d\n",
1653                        ret);
1654         }
1655 #endif
1656         return ret;
1657 }
1658 module_init(wm8993_modinit);
1659
1660 static void __exit wm8993_exit(void)
1661 {
1662 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1663         i2c_del_driver(&wm8993_i2c_driver);
1664 #endif
1665 }
1666 module_exit(wm8993_exit);
1667
1668
1669 MODULE_DESCRIPTION("ASoC WM8993 driver");
1670 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1671 MODULE_LICENSE("GPL");