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(struct snd_soc_codec *codec, 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 appropriate 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(2),
 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_list *wlist = snd_kcontrol_chip(kcontrol);
 722         struct snd_soc_dapm_widget *widget = wlist->widgets[0];
 723         struct snd_soc_codec *codec = widget->codec;
 724         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
 725         int ret;
 726
 727         /* Turn it off if we're using the main output mixer */
 728         if (ucontrol->value.integer.value[0] == 0) {
 729                 if (wm8993->class_w_users == 0) {
 730                         dev_dbg(codec->dev, "Disabling Class W\n");
 731                         snd_soc_update_bits(codec, WM8993_CLASS_W_0,
 732                                             WM8993_CP_DYN_FREQ |
 733                                             WM8993_CP_DYN_V,
 734                                             0);
 735                 }
 736                 wm8993->class_w_users++;
 737                 wm8993->hubs_data.class_w = true;
 738         }
 739
 740         /* Implement the change */
 741         ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
 742
 743         /* Enable it if we're using the direct DAC path */
 744         if (ucontrol->value.integer.value[0] == 1) {
 745                 if (wm8993->class_w_users == 1) {
 746                         dev_dbg(codec->dev, "Enabling Class W\n");
 747                         snd_soc_update_bits(codec, WM8993_CLASS_W_0,
 748                                             WM8993_CP_DYN_FREQ |
 749                                             WM8993_CP_DYN_V,
 750                                             WM8993_CP_DYN_FREQ |
 751                                             WM8993_CP_DYN_V);
 752                 }
 753                 wm8993->class_w_users--;
 754                 wm8993->hubs_data.class_w = false;
 755         }
 756
 757         dev_dbg(codec->dev, "Indirect DAC use count now %d\n",
 758                 wm8993->class_w_users);
 759
 760         return ret;
 761 }
 762
 763 #define SOC_DAPM_ENUM_W(xname, xenum) \
 764 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 765         .info = snd_soc_info_enum_double, \
 766         .get = snd_soc_dapm_get_enum_double, \
 767         .put = class_w_put, \
 768         .private_value = (unsigned long)&xenum }
 769
 770 static const char *hp_mux_text[] = {
 771         "Mixer",
 772         "DAC",
 773 };
 774
 775 static const struct soc_enum hpl_enum =
 776         SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER1, 8, 2, hp_mux_text);
 777
 778 static const struct snd_kcontrol_new hpl_mux =
 779         SOC_DAPM_ENUM_W("Left Headphone Mux", hpl_enum);
 780
 781 static const struct soc_enum hpr_enum =
 782         SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER2, 8, 2, hp_mux_text);
 783
 784 static const struct snd_kcontrol_new hpr_mux =
 785         SOC_DAPM_ENUM_W("Right Headphone Mux", hpr_enum);
 786
 787 static const struct snd_kcontrol_new left_speaker_mixer[] = {
 788 SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 7, 1, 0),
 789 SOC_DAPM_SINGLE("IN1LP Switch", WM8993_SPEAKER_MIXER, 5, 1, 0),
 790 SOC_DAPM_SINGLE("Output Switch", WM8993_SPEAKER_MIXER, 3, 1, 0),
 791 SOC_DAPM_SINGLE("DAC Switch", WM8993_SPEAKER_MIXER, 6, 1, 0),
 792 };
 793
 794 static const struct snd_kcontrol_new right_speaker_mixer[] = {
 795 SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 6, 1, 0),
 796 SOC_DAPM_SINGLE("IN1RP Switch", WM8993_SPEAKER_MIXER, 4, 1, 0),
 797 SOC_DAPM_SINGLE("Output Switch", WM8993_SPEAKER_MIXER, 2, 1, 0),
 798 SOC_DAPM_SINGLE("DAC Switch", WM8993_SPEAKER_MIXER, 0, 1, 0),
 799 };
 800
 801 static const char *aif_text[] = {
 802         "Left", "Right"
 803 };
 804
 805 static const struct soc_enum aifoutl_enum =
 806         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_1, 15, 2, aif_text);
 807
 808 static const struct snd_kcontrol_new aifoutl_mux =
 809         SOC_DAPM_ENUM("AIFOUTL Mux", aifoutl_enum);
 810
 811 static const struct soc_enum aifoutr_enum =
 812         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_1, 14, 2, aif_text);
 813
 814 static const struct snd_kcontrol_new aifoutr_mux =
 815         SOC_DAPM_ENUM("AIFOUTR Mux", aifoutr_enum);
 816
 817 static const struct soc_enum aifinl_enum =
 818         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_2, 15, 2, aif_text);
 819
 820 static const struct snd_kcontrol_new aifinl_mux =
 821         SOC_DAPM_ENUM("AIFINL Mux", aifinl_enum);
 822
 823 static const struct soc_enum aifinr_enum =
 824         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_2, 14, 2, aif_text);
 825
 826 static const struct snd_kcontrol_new aifinr_mux =
 827         SOC_DAPM_ENUM("AIFINR Mux", aifinr_enum);
 828
 829 static const char *sidetone_text[] = {
 830         "None", "Left", "Right"
 831 };
 832
 833 static const struct soc_enum sidetonel_enum =
 834         SOC_ENUM_SINGLE(WM8993_DIGITAL_SIDE_TONE, 2, 3, sidetone_text);
 835
 836 static const struct snd_kcontrol_new sidetonel_mux =
 837         SOC_DAPM_ENUM("Left Sidetone", sidetonel_enum);
 838
 839 static const struct soc_enum sidetoner_enum =
 840         SOC_ENUM_SINGLE(WM8993_DIGITAL_SIDE_TONE, 0, 3, sidetone_text);
 841
 842 static const struct snd_kcontrol_new sidetoner_mux =
 843         SOC_DAPM_ENUM("Right Sidetone", sidetoner_enum);
 844
 845 static const struct snd_soc_dapm_widget wm8993_dapm_widgets[] = {
 846 SND_SOC_DAPM_SUPPLY("CLK_SYS", WM8993_BUS_CONTROL_1, 1, 0, clk_sys_event,
 847                     SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 848 SND_SOC_DAPM_SUPPLY("TOCLK", WM8993_CLOCKING_1, 14, 0, NULL, 0),
 849 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8993_CLOCKING_3, 0, 0, NULL, 0),
 850 SND_SOC_DAPM_SUPPLY("VMID", SND_SOC_NOPM, 0, 0, NULL, 0),
 851
 852 SND_SOC_DAPM_ADC("ADCL", NULL, WM8993_POWER_MANAGEMENT_2, 1, 0),
 853 SND_SOC_DAPM_ADC("ADCR", NULL, WM8993_POWER_MANAGEMENT_2, 0, 0),
 854
 855 SND_SOC_DAPM_MUX("AIFOUTL Mux", SND_SOC_NOPM, 0, 0, &aifoutl_mux),
 856 SND_SOC_DAPM_MUX("AIFOUTR Mux", SND_SOC_NOPM, 0, 0, &aifoutr_mux),
 857
 858 SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0),
 859 SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0),
 860
 861 SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
 862 SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
 863
 864 SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &aifinl_mux),
 865 SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &aifinr_mux),
 866
 867 SND_SOC_DAPM_MUX("DACL Sidetone", SND_SOC_NOPM, 0, 0, &sidetonel_mux),
 868 SND_SOC_DAPM_MUX("DACR Sidetone", SND_SOC_NOPM, 0, 0, &sidetoner_mux),
 869
 870 SND_SOC_DAPM_DAC("DACL", NULL, WM8993_POWER_MANAGEMENT_3, 1, 0),
 871 SND_SOC_DAPM_DAC("DACR", NULL, WM8993_POWER_MANAGEMENT_3, 0, 0),
 872
 873 SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0, &hpl_mux),
 874 SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0, &hpr_mux),
 875
 876 SND_SOC_DAPM_MIXER("SPKL", WM8993_POWER_MANAGEMENT_3, 8, 0,
 877                    left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)),
 878 SND_SOC_DAPM_MIXER("SPKR", WM8993_POWER_MANAGEMENT_3, 9, 0,
 879                    right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer)),
 880 SND_SOC_DAPM_PGA("Direct Voice", SND_SOC_NOPM, 0, 0, NULL, 0),
 881 };
 882
 883 static const struct snd_soc_dapm_route routes[] = {
 884         { "MICBIAS1", NULL, "VMID" },
 885         { "MICBIAS2", NULL, "VMID" },
 886
 887         { "ADCL", NULL, "CLK_SYS" },
 888         { "ADCL", NULL, "CLK_DSP" },
 889         { "ADCR", NULL, "CLK_SYS" },
 890         { "ADCR", NULL, "CLK_DSP" },
 891
 892         { "AIFOUTL Mux", "Left", "ADCL" },
 893         { "AIFOUTL Mux", "Right", "ADCR" },
 894         { "AIFOUTR Mux", "Left", "ADCL" },
 895         { "AIFOUTR Mux", "Right", "ADCR" },
 896
 897         { "AIFOUTL", NULL, "AIFOUTL Mux" },
 898         { "AIFOUTR", NULL, "AIFOUTR Mux" },
 899
 900         { "DACL Mux", "Left", "AIFINL" },
 901         { "DACL Mux", "Right", "AIFINR" },
 902         { "DACR Mux", "Left", "AIFINL" },
 903         { "DACR Mux", "Right", "AIFINR" },
 904
 905         { "DACL Sidetone", "Left", "ADCL" },
 906         { "DACL Sidetone", "Right", "ADCR" },
 907         { "DACR Sidetone", "Left", "ADCL" },
 908         { "DACR Sidetone", "Right", "ADCR" },
 909
 910         { "DACL", NULL, "CLK_SYS" },
 911         { "DACL", NULL, "CLK_DSP" },
 912         { "DACL", NULL, "DACL Mux" },
 913         { "DACL", NULL, "DACL Sidetone" },
 914         { "DACR", NULL, "CLK_SYS" },
 915         { "DACR", NULL, "CLK_DSP" },
 916         { "DACR", NULL, "DACR Mux" },
 917         { "DACR", NULL, "DACR Sidetone" },
 918
 919         { "Left Output Mixer", "DAC Switch", "DACL" },
 920
 921         { "Right Output Mixer", "DAC Switch", "DACR" },
 922
 923         { "Left Output PGA", NULL, "CLK_SYS" },
 924
 925         { "Right Output PGA", NULL, "CLK_SYS" },
 926
 927         { "SPKL", "DAC Switch", "DACL" },
 928         { "SPKL", NULL, "CLK_SYS" },
 929
 930         { "SPKR", "DAC Switch", "DACR" },
 931         { "SPKR", NULL, "CLK_SYS" },
 932
 933         { "Left Headphone Mux", "DAC", "DACL" },
 934         { "Right Headphone Mux", "DAC", "DACR" },
 935 };
 936
 937 static void wm8993_cache_restore(struct snd_soc_codec *codec)
 938 {
 939         u16 *cache = codec->reg_cache;
 940         int i;
 941
 942         if (!codec->cache_sync)
 943                 return;
 944
 945         /* Reenable hardware writes */
 946         codec->cache_only = 0;
 947
 948         /* Restore the register settings */
 949         for (i = 1; i < WM8993_MAX_REGISTER; i++) {
 950                 if (cache[i] == wm8993_reg_defaults[i])
 951                         continue;
 952                 snd_soc_write(codec, i, cache[i]);
 953         }
 954
 955         /* We're in sync again */
 956         codec->cache_sync = 0;
 957 }
 958
 959 static int wm8993_set_bias_level(struct snd_soc_codec *codec,
 960                                  enum snd_soc_bias_level level)
 961 {
 962         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
 963         int ret;
 964
 965         switch (level) {
 966         case SND_SOC_BIAS_ON:
 967         case SND_SOC_BIAS_PREPARE:
 968                 /* VMID=2*40k */
 969                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
 970                                     WM8993_VMID_SEL_MASK, 0x2);
 971                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_2,
 972                                     WM8993_TSHUT_ENA, WM8993_TSHUT_ENA);
 973                 break;
 974
 975         case SND_SOC_BIAS_STANDBY:
 976                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 977                         ret = regulator_bulk_enable(ARRAY_SIZE(wm8993->supplies),
 978                                                     wm8993->supplies);
 979                         if (ret != 0)
 980                                 return ret;
 981
 982                         wm8993_cache_restore(codec);
 983
 984                         /* Tune DC servo configuration */
 985                         snd_soc_write(codec, 0x44, 3);
 986                         snd_soc_write(codec, 0x56, 3);
 987                         snd_soc_write(codec, 0x44, 0);
 988
 989                         /* Bring up VMID with fast soft start */
 990                         snd_soc_update_bits(codec, WM8993_ANTIPOP2,
 991                                             WM8993_STARTUP_BIAS_ENA |
 992                                             WM8993_VMID_BUF_ENA |
 993                                             WM8993_VMID_RAMP_MASK |
 994                                             WM8993_BIAS_SRC,
 995                                             WM8993_STARTUP_BIAS_ENA |
 996                                             WM8993_VMID_BUF_ENA |
 997                                             WM8993_VMID_RAMP_MASK |
 998                                             WM8993_BIAS_SRC);
 999
1000                         /* If either line output is single ended we
1001                          * need the VMID buffer */
1002                         if (!wm8993->pdata.lineout1_diff ||
1003                             !wm8993->pdata.lineout2_diff)
1004                                 snd_soc_update_bits(codec, WM8993_ANTIPOP1,
1005                                                  WM8993_LINEOUT_VMID_BUF_ENA,
1006                                                  WM8993_LINEOUT_VMID_BUF_ENA);
1007
1008                         /* VMID=2*40k */
1009                         snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
1010                                             WM8993_VMID_SEL_MASK |
1011                                             WM8993_BIAS_ENA,
1012                                             WM8993_BIAS_ENA | 0x2);
1013                         msleep(32);
1014
1015                         /* Switch to normal bias */
1016                         snd_soc_update_bits(codec, WM8993_ANTIPOP2,
1017                                             WM8993_BIAS_SRC |
1018                                             WM8993_STARTUP_BIAS_ENA, 0);
1019                 }
1020
1021                 /* VMID=2*240k */
1022                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
1023                                     WM8993_VMID_SEL_MASK, 0x4);
1024
1025                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_2,
1026                                     WM8993_TSHUT_ENA, 0);
1027                 break;
1028
1029         case SND_SOC_BIAS_OFF:
1030                 snd_soc_update_bits(codec, WM8993_ANTIPOP1,
1031                                     WM8993_LINEOUT_VMID_BUF_ENA, 0);
1032
1033                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
1034                                     WM8993_VMID_SEL_MASK | WM8993_BIAS_ENA,
1035                                     0);
1036
1037                 snd_soc_update_bits(codec, WM8993_ANTIPOP2,
1038                                     WM8993_STARTUP_BIAS_ENA |
1039                                     WM8993_VMID_BUF_ENA |
1040                                     WM8993_VMID_RAMP_MASK |
1041                                     WM8993_BIAS_SRC, 0);
1042
1043 #ifdef CONFIG_REGULATOR
1044                /* Post 2.6.34 we will be able to get a callback when
1045                 * the regulators are disabled which we can use but
1046                 * for now just assume that the power will be cut if
1047                 * the regulator API is in use.
1048                 */
1049                 codec->cache_sync = 1;
1050 #endif
1051
1052                 regulator_bulk_disable(ARRAY_SIZE(wm8993->supplies),
1053                                        wm8993->supplies);
1054                 break;
1055         }
1056
1057         codec->dapm.bias_level = level;
1058
1059         return 0;
1060 }
1061
1062 static int wm8993_set_sysclk(struct snd_soc_dai *codec_dai,
1063                              int clk_id, unsigned int freq, int dir)
1064 {
1065         struct snd_soc_codec *codec = codec_dai->codec;
1066         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1067
1068         switch (clk_id) {
1069         case WM8993_SYSCLK_MCLK:
1070                 wm8993->mclk_rate = freq;
1071         case WM8993_SYSCLK_FLL:
1072                 wm8993->sysclk_source = clk_id;
1073                 break;
1074
1075         default:
1076                 return -EINVAL;
1077         }
1078
1079         return 0;
1080 }
1081
1082 static int wm8993_set_dai_fmt(struct snd_soc_dai *dai,
1083                               unsigned int fmt)
1084 {
1085         struct snd_soc_codec *codec = dai->codec;
1086         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1087         unsigned int aif1 = snd_soc_read(codec, WM8993_AUDIO_INTERFACE_1);
1088         unsigned int aif4 = snd_soc_read(codec, WM8993_AUDIO_INTERFACE_4);
1089
1090         aif1 &= ~(WM8993_BCLK_DIR | WM8993_AIF_BCLK_INV |
1091                   WM8993_AIF_LRCLK_INV | WM8993_AIF_FMT_MASK);
1092         aif4 &= ~WM8993_LRCLK_DIR;
1093
1094         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1095         case SND_SOC_DAIFMT_CBS_CFS:
1096                 wm8993->master = 0;
1097                 break;
1098         case SND_SOC_DAIFMT_CBS_CFM:
1099                 aif4 |= WM8993_LRCLK_DIR;
1100                 wm8993->master = 1;
1101                 break;
1102         case SND_SOC_DAIFMT_CBM_CFS:
1103                 aif1 |= WM8993_BCLK_DIR;
1104                 wm8993->master = 1;
1105                 break;
1106         case SND_SOC_DAIFMT_CBM_CFM:
1107                 aif1 |= WM8993_BCLK_DIR;
1108                 aif4 |= WM8993_LRCLK_DIR;
1109                 wm8993->master = 1;
1110                 break;
1111         default:
1112                 return -EINVAL;
1113         }
1114
1115         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1116         case SND_SOC_DAIFMT_DSP_B:
1117                 aif1 |= WM8993_AIF_LRCLK_INV;
1118         case SND_SOC_DAIFMT_DSP_A:
1119                 aif1 |= 0x18;
1120                 break;
1121         case SND_SOC_DAIFMT_I2S:
1122                 aif1 |= 0x10;
1123                 break;
1124         case SND_SOC_DAIFMT_RIGHT_J:
1125                 break;
1126         case SND_SOC_DAIFMT_LEFT_J:
1127                 aif1 |= 0x8;
1128                 break;
1129         default:
1130                 return -EINVAL;
1131         }
1132
1133         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1134         case SND_SOC_DAIFMT_DSP_A:
1135         case SND_SOC_DAIFMT_DSP_B:
1136                 /* frame inversion not valid for DSP modes */
1137                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1138                 case SND_SOC_DAIFMT_NB_NF:
1139                         break;
1140                 case SND_SOC_DAIFMT_IB_NF:
1141                         aif1 |= WM8993_AIF_BCLK_INV;
1142                         break;
1143                 default:
1144                         return -EINVAL;
1145                 }
1146                 break;
1147
1148         case SND_SOC_DAIFMT_I2S:
1149         case SND_SOC_DAIFMT_RIGHT_J:
1150         case SND_SOC_DAIFMT_LEFT_J:
1151                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1152                 case SND_SOC_DAIFMT_NB_NF:
1153                         break;
1154                 case SND_SOC_DAIFMT_IB_IF:
1155                         aif1 |= WM8993_AIF_BCLK_INV | WM8993_AIF_LRCLK_INV;
1156                         break;
1157                 case SND_SOC_DAIFMT_IB_NF:
1158                         aif1 |= WM8993_AIF_BCLK_INV;
1159                         break;
1160                 case SND_SOC_DAIFMT_NB_IF:
1161                         aif1 |= WM8993_AIF_LRCLK_INV;
1162                         break;
1163                 default:
1164                         return -EINVAL;
1165                 }
1166                 break;
1167         default:
1168                 return -EINVAL;
1169         }
1170
1171         snd_soc_write(codec, WM8993_AUDIO_INTERFACE_1, aif1);
1172         snd_soc_write(codec, WM8993_AUDIO_INTERFACE_4, aif4);
1173
1174         return 0;
1175 }
1176
1177 static int wm8993_hw_params(struct snd_pcm_substream *substream,
1178                             struct snd_pcm_hw_params *params,
1179                             struct snd_soc_dai *dai)
1180 {
1181         struct snd_soc_codec *codec = dai->codec;
1182         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1183         int ret, i, best, best_val, cur_val;
1184         unsigned int clocking1, clocking3, aif1, aif4;
1185
1186         clocking1 = snd_soc_read(codec, WM8993_CLOCKING_1);
1187         clocking1 &= ~WM8993_BCLK_DIV_MASK;
1188
1189         clocking3 = snd_soc_read(codec, WM8993_CLOCKING_3);
1190         clocking3 &= ~(WM8993_CLK_SYS_RATE_MASK | WM8993_SAMPLE_RATE_MASK);
1191
1192         aif1 = snd_soc_read(codec, WM8993_AUDIO_INTERFACE_1);
1193         aif1 &= ~WM8993_AIF_WL_MASK;
1194
1195         aif4 = snd_soc_read(codec, WM8993_AUDIO_INTERFACE_4);
1196         aif4 &= ~WM8993_LRCLK_RATE_MASK;
1197
1198         /* What BCLK do we need? */
1199         wm8993->fs = params_rate(params);
1200         wm8993->bclk = 2 * wm8993->fs;
1201         if (wm8993->tdm_slots) {
1202                 dev_dbg(codec->dev, "Configuring for %d %d bit TDM slots\n",
1203                         wm8993->tdm_slots, wm8993->tdm_width);
1204                 wm8993->bclk *= wm8993->tdm_width * wm8993->tdm_slots;
1205         } else {
1206                 switch (params_format(params)) {
1207                 case SNDRV_PCM_FORMAT_S16_LE:
1208                         wm8993->bclk *= 16;
1209                         break;
1210                 case SNDRV_PCM_FORMAT_S20_3LE:
1211                         wm8993->bclk *= 20;
1212                         aif1 |= 0x8;
1213                         break;
1214                 case SNDRV_PCM_FORMAT_S24_LE:
1215                         wm8993->bclk *= 24;
1216                         aif1 |= 0x10;
1217                         break;
1218                 case SNDRV_PCM_FORMAT_S32_LE:
1219                         wm8993->bclk *= 32;
1220                         aif1 |= 0x18;
1221                         break;
1222                 default:
1223                         return -EINVAL;
1224                 }
1225         }
1226
1227         dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm8993->bclk);
1228
1229         ret = configure_clock(codec);
1230         if (ret != 0)
1231                 return ret;
1232
1233         /* Select nearest CLK_SYS_RATE */
1234         best = 0;
1235         best_val = abs((wm8993->sysclk_rate / clk_sys_rates[0].ratio)
1236                        - wm8993->fs);
1237         for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
1238                 cur_val = abs((wm8993->sysclk_rate /
1239                                clk_sys_rates[i].ratio) - wm8993->fs);
1240                 if (cur_val < best_val) {
1241                         best = i;
1242                         best_val = cur_val;
1243                 }
1244         }
1245         dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n",
1246                 clk_sys_rates[best].ratio);
1247         clocking3 |= (clk_sys_rates[best].clk_sys_rate
1248                       << WM8993_CLK_SYS_RATE_SHIFT);
1249
1250         /* SAMPLE_RATE */
1251         best = 0;
1252         best_val = abs(wm8993->fs - sample_rates[0].rate);
1253         for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1254                 /* Closest match */
1255                 cur_val = abs(wm8993->fs - sample_rates[i].rate);
1256                 if (cur_val < best_val) {
1257                         best = i;
1258                         best_val = cur_val;
1259                 }
1260         }
1261         dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n",
1262                 sample_rates[best].rate);
1263         clocking3 |= (sample_rates[best].sample_rate
1264                       << WM8993_SAMPLE_RATE_SHIFT);
1265
1266         /* BCLK_DIV */
1267         best = 0;
1268         best_val = INT_MAX;
1269         for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
1270                 cur_val = ((wm8993->sysclk_rate * 10) / bclk_divs[i].div)
1271                         - wm8993->bclk;
1272                 if (cur_val < 0) /* Table is sorted */
1273                         break;
1274                 if (cur_val < best_val) {
1275                         best = i;
1276                         best_val = cur_val;
1277                 }
1278         }
1279         wm8993->bclk = (wm8993->sysclk_rate * 10) / bclk_divs[best].div;
1280         dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
1281                 bclk_divs[best].div, wm8993->bclk);
1282         clocking1 |= bclk_divs[best].bclk_div << WM8993_BCLK_DIV_SHIFT;
1283
1284         /* LRCLK is a simple fraction of BCLK */
1285         dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm8993->bclk / wm8993->fs);
1286         aif4 |= wm8993->bclk / wm8993->fs;
1287
1288         snd_soc_write(codec, WM8993_CLOCKING_1, clocking1);
1289         snd_soc_write(codec, WM8993_CLOCKING_3, clocking3);
1290         snd_soc_write(codec, WM8993_AUDIO_INTERFACE_1, aif1);
1291         snd_soc_write(codec, WM8993_AUDIO_INTERFACE_4, aif4);
1292
1293         /* ReTune Mobile? */
1294         if (wm8993->pdata.num_retune_configs) {
1295                 u16 eq1 = snd_soc_read(codec, WM8993_EQ1);
1296                 struct wm8993_retune_mobile_setting *s;
1297
1298                 best = 0;
1299                 best_val = abs(wm8993->pdata.retune_configs[0].rate
1300                                - wm8993->fs);
1301                 for (i = 0; i < wm8993->pdata.num_retune_configs; i++) {
1302                         cur_val = abs(wm8993->pdata.retune_configs[i].rate
1303                                       - wm8993->fs);
1304                         if (cur_val < best_val) {
1305                                 best_val = cur_val;
1306                                 best = i;
1307                         }
1308                 }
1309                 s = &wm8993->pdata.retune_configs[best];
1310
1311                 dev_dbg(codec->dev, "ReTune Mobile %s tuned for %dHz\n",
1312                         s->name, s->rate);
1313
1314                 /* Disable EQ while we reconfigure */
1315                 snd_soc_update_bits(codec, WM8993_EQ1, WM8993_EQ_ENA, 0);
1316
1317                 for (i = 1; i < ARRAY_SIZE(s->config); i++)
1318                         snd_soc_write(codec, WM8993_EQ1 + i, s->config[i]);
1319
1320                 snd_soc_update_bits(codec, WM8993_EQ1, WM8993_EQ_ENA, eq1);
1321         }
1322
1323         return 0;
1324 }
1325
1326 static int wm8993_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1327 {
1328         struct snd_soc_codec *codec = codec_dai->codec;
1329         unsigned int reg;
1330
1331         reg = snd_soc_read(codec, WM8993_DAC_CTRL);
1332
1333         if (mute)
1334                 reg |= WM8993_DAC_MUTE;
1335         else
1336                 reg &= ~WM8993_DAC_MUTE;
1337
1338         snd_soc_write(codec, WM8993_DAC_CTRL, reg);
1339
1340         return 0;
1341 }
1342
1343 static int wm8993_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
1344                                unsigned int rx_mask, int slots, int slot_width)
1345 {
1346         struct snd_soc_codec *codec = dai->codec;
1347         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1348         int aif1 = 0;
1349         int aif2 = 0;
1350
1351         /* Don't need to validate anything if we're turning off TDM */
1352         if (slots == 0) {
1353                 wm8993->tdm_slots = 0;
1354                 goto out;
1355         }
1356
1357         /* Note that we allow configurations we can't handle ourselves -
1358          * for example, we can generate clocks for slots 2 and up even if
1359          * we can't use those slots ourselves.
1360          */
1361         aif1 |= WM8993_AIFADC_TDM;
1362         aif2 |= WM8993_AIFDAC_TDM;
1363
1364         switch (rx_mask) {
1365         case 3:
1366                 break;
1367         case 0xc:
1368                 aif1 |= WM8993_AIFADC_TDM_CHAN;
1369                 break;
1370         default:
1371                 return -EINVAL;
1372         }
1373
1374
1375         switch (tx_mask) {
1376         case 3:
1377                 break;
1378         case 0xc:
1379                 aif2 |= WM8993_AIFDAC_TDM_CHAN;
1380                 break;
1381         default:
1382                 return -EINVAL;
1383         }
1384
1385 out:
1386         wm8993->tdm_width = slot_width;
1387         wm8993->tdm_slots = slots / 2;
1388
1389         snd_soc_update_bits(codec, WM8993_AUDIO_INTERFACE_1,
1390                             WM8993_AIFADC_TDM | WM8993_AIFADC_TDM_CHAN, aif1);
1391         snd_soc_update_bits(codec, WM8993_AUDIO_INTERFACE_2,
1392                             WM8993_AIFDAC_TDM | WM8993_AIFDAC_TDM_CHAN, aif2);
1393
1394         return 0;
1395 }
1396
1397 static struct snd_soc_dai_ops wm8993_ops = {
1398         .set_sysclk = wm8993_set_sysclk,
1399         .set_fmt = wm8993_set_dai_fmt,
1400         .hw_params = wm8993_hw_params,
1401         .digital_mute = wm8993_digital_mute,
1402         .set_pll = wm8993_set_fll,
1403         .set_tdm_slot = wm8993_set_tdm_slot,
1404 };
1405
1406 #define WM8993_RATES SNDRV_PCM_RATE_8000_48000
1407
1408 #define WM8993_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
1409                         SNDRV_PCM_FMTBIT_S20_3LE |\
1410                         SNDRV_PCM_FMTBIT_S24_LE |\
1411                         SNDRV_PCM_FMTBIT_S32_LE)
1412
1413 static struct snd_soc_dai_driver wm8993_dai = {
1414         .name = "wm8993-hifi",
1415         .playback = {
1416                 .stream_name = "Playback",
1417                 .channels_min = 1,
1418                 .channels_max = 2,
1419                 .rates = WM8993_RATES,
1420                 .formats = WM8993_FORMATS,
1421         },
1422         .capture = {
1423                  .stream_name = "Capture",
1424                  .channels_min = 1,
1425                  .channels_max = 2,
1426                  .rates = WM8993_RATES,
1427                  .formats = WM8993_FORMATS,
1428          },
1429         .ops = &wm8993_ops,
1430         .symmetric_rates = 1,
1431 };
1432
1433 static int wm8993_probe(struct snd_soc_codec *codec)
1434 {
1435         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1436         struct snd_soc_dapm_context *dapm = &codec->dapm;
1437         int ret, i, val;
1438
1439         wm8993->hubs_data.hp_startup_mode = 1;
1440         wm8993->hubs_data.dcs_codes_l = -2;
1441         wm8993->hubs_data.dcs_codes_r = -2;
1442         wm8993->hubs_data.series_startup = 1;
1443
1444         ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C);
1445         if (ret != 0) {
1446                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
1447                 return ret;
1448         }
1449
1450         for (i = 0; i < ARRAY_SIZE(wm8993->supplies); i++)
1451                 wm8993->supplies[i].supply = wm8993_supply_names[i];
1452
1453         ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8993->supplies),
1454                                  wm8993->supplies);
1455         if (ret != 0) {
1456                 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
1457                 return ret;
1458         }
1459
1460         ret = regulator_bulk_enable(ARRAY_SIZE(wm8993->supplies),
1461                                     wm8993->supplies);
1462         if (ret != 0) {
1463                 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
1464                 goto err_get;
1465         }
1466
1467         val = snd_soc_read(codec, WM8993_SOFTWARE_RESET);
1468         if (val != wm8993_reg_defaults[WM8993_SOFTWARE_RESET]) {
1469                 dev_err(codec->dev, "Invalid ID register value %x\n", val);
1470                 ret = -EINVAL;
1471                 goto err_enable;
1472         }
1473
1474         ret = snd_soc_write(codec, WM8993_SOFTWARE_RESET, 0xffff);
1475         if (ret != 0)
1476                 goto err_enable;
1477
1478         codec->cache_only = 1;
1479
1480         /* By default we're using the output mixers */
1481         wm8993->class_w_users = 2;
1482
1483         /* Latch volume update bits and default ZC on */
1484         snd_soc_update_bits(codec, WM8993_RIGHT_DAC_DIGITAL_VOLUME,
1485                             WM8993_DAC_VU, WM8993_DAC_VU);
1486         snd_soc_update_bits(codec, WM8993_RIGHT_ADC_DIGITAL_VOLUME,
1487                             WM8993_ADC_VU, WM8993_ADC_VU);
1488
1489         /* Manualy manage the HPOUT sequencing for independent stereo
1490          * control. */
1491         snd_soc_update_bits(codec, WM8993_ANALOGUE_HP_0,
1492                             WM8993_HPOUT1_AUTO_PU, 0);
1493
1494         /* Use automatic clock configuration */
1495         snd_soc_update_bits(codec, WM8993_CLOCKING_4, WM8993_SR_MODE, 0);
1496
1497         wm_hubs_handle_analogue_pdata(codec, wm8993->pdata.lineout1_diff,
1498                                       wm8993->pdata.lineout2_diff,
1499                                       wm8993->pdata.lineout1fb,
1500                                       wm8993->pdata.lineout2fb,
1501                                       wm8993->pdata.jd_scthr,
1502                                       wm8993->pdata.jd_thr,
1503                                       wm8993->pdata.micbias1_lvl,
1504                                       wm8993->pdata.micbias2_lvl);
1505
1506         ret = wm8993_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1507         if (ret != 0)
1508                 goto err_enable;
1509
1510         snd_soc_add_controls(codec, wm8993_snd_controls,
1511                              ARRAY_SIZE(wm8993_snd_controls));
1512         if (wm8993->pdata.num_retune_configs != 0) {
1513                 dev_dbg(codec->dev, "Using ReTune Mobile\n");
1514         } else {
1515                 dev_dbg(codec->dev, "No ReTune Mobile, using normal EQ\n");
1516                 snd_soc_add_controls(codec, wm8993_eq_controls,
1517                                      ARRAY_SIZE(wm8993_eq_controls));
1518         }
1519
1520         snd_soc_dapm_new_controls(dapm, wm8993_dapm_widgets,
1521                                   ARRAY_SIZE(wm8993_dapm_widgets));
1522         wm_hubs_add_analogue_controls(codec);
1523
1524         snd_soc_dapm_add_routes(dapm, routes, ARRAY_SIZE(routes));
1525         wm_hubs_add_analogue_routes(codec, wm8993->pdata.lineout1_diff,
1526                                     wm8993->pdata.lineout2_diff);
1527
1528         return 0;
1529
1530 err_enable:
1531         regulator_bulk_disable(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
1532 err_get:
1533         regulator_bulk_free(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
1534         return ret;
1535 }
1536
1537 static int wm8993_remove(struct snd_soc_codec *codec)
1538 {
1539         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1540
1541         wm8993_set_bias_level(codec, SND_SOC_BIAS_OFF);
1542         regulator_bulk_free(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
1543         return 0;
1544 }
1545
1546 #ifdef CONFIG_PM
1547 static int wm8993_suspend(struct snd_soc_codec *codec, pm_message_t state)
1548 {
1549         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1550         int fll_fout = wm8993->fll_fout;
1551         int fll_fref  = wm8993->fll_fref;
1552         int ret;
1553
1554         /* Stop the FLL in an orderly fashion */
1555         ret = _wm8993_set_fll(codec, 0, 0, 0, 0);
1556         if (ret != 0) {
1557                 dev_err(codec->dev, "Failed to stop FLL\n");
1558                 return ret;
1559         }
1560
1561         wm8993->fll_fout = fll_fout;
1562         wm8993->fll_fref = fll_fref;
1563
1564         wm8993_set_bias_level(codec, SND_SOC_BIAS_OFF);
1565
1566         return 0;
1567 }
1568
1569 static int wm8993_resume(struct snd_soc_codec *codec)
1570 {
1571         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1572         int ret;
1573
1574         wm8993_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1575
1576         /* Restart the FLL? */
1577         if (wm8993->fll_fout) {
1578                 int fll_fout = wm8993->fll_fout;
1579                 int fll_fref  = wm8993->fll_fref;
1580
1581                 wm8993->fll_fref = 0;
1582                 wm8993->fll_fout = 0;
1583
1584                 ret = _wm8993_set_fll(codec, 0, wm8993->fll_src,
1585                                      fll_fref, fll_fout);
1586                 if (ret != 0)
1587                         dev_err(codec->dev, "Failed to restart FLL\n");
1588         }
1589
1590         return 0;
1591 }
1592 #else
1593 #define wm8993_suspend NULL
1594 #define wm8993_resume NULL
1595 #endif
1596
1597 static struct snd_soc_codec_driver soc_codec_dev_wm8993 = {
1598         .probe =        wm8993_probe,
1599         .remove =       wm8993_remove,
1600         .suspend =      wm8993_suspend,
1601         .resume =       wm8993_resume,
1602         .set_bias_level = wm8993_set_bias_level,
1603         .reg_cache_size = ARRAY_SIZE(wm8993_reg_defaults),
1604         .reg_word_size = sizeof(u16),
1605         .reg_cache_default = wm8993_reg_defaults,
1606         .volatile_register = wm8993_volatile,
1607 };
1608
1609 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1610 static __devinit int wm8993_i2c_probe(struct i2c_client *i2c,
1611                                       const struct i2c_device_id *id)
1612 {
1613         struct wm8993_priv *wm8993;
1614         int ret;
1615
1616         wm8993 = kzalloc(sizeof(struct wm8993_priv), GFP_KERNEL);
1617         if (wm8993 == NULL)
1618                 return -ENOMEM;
1619
1620         i2c_set_clientdata(i2c, wm8993);
1621
1622         ret = snd_soc_register_codec(&i2c->dev,
1623                         &soc_codec_dev_wm8993, &wm8993_dai, 1);
1624         if (ret < 0)
1625                 kfree(wm8993);
1626         return ret;
1627 }
1628
1629 static __devexit int wm8993_i2c_remove(struct i2c_client *client)
1630 {
1631         snd_soc_unregister_codec(&client->dev);
1632         kfree(i2c_get_clientdata(client));
1633         return 0;
1634 }
1635
1636 static const struct i2c_device_id wm8993_i2c_id[] = {
1637         { "wm8993", 0 },
1638         { }
1639 };
1640 MODULE_DEVICE_TABLE(i2c, wm8993_i2c_id);
1641
1642 static struct i2c_driver wm8993_i2c_driver = {
1643         .driver = {
1644                 .name = "wm8993-codec",
1645                 .owner = THIS_MODULE,
1646         },
1647         .probe =    wm8993_i2c_probe,
1648         .remove =   __devexit_p(wm8993_i2c_remove),
1649         .id_table = wm8993_i2c_id,
1650 };
1651 #endif
1652
1653 static int __init wm8993_modinit(void)
1654 {
1655         int ret = 0;
1656 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1657         ret = i2c_add_driver(&wm8993_i2c_driver);
1658         if (ret != 0) {
1659                 pr_err("WM8993: Unable to register I2C driver: %d\n",
1660                        ret);
1661         }
1662 #endif
1663         return ret;
1664 }
1665 module_init(wm8993_modinit);
1666
1667 static void __exit wm8993_exit(void)
1668 {
1669 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1670         i2c_del_driver(&wm8993_i2c_driver);
1671 #endif
1672 }
1673 module_exit(wm8993_exit);
1674
1675
1676 MODULE_DESCRIPTION("ASoC WM8993 driver");
1677 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1678 MODULE_LICENSE("GPL");