sound/soc/codecs/wm8993.c

   1 /*
   2  * wm8993.c -- WM8993 ALSA SoC audio driver
   3  *
   4  * Copyright 2009 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/spi/spi.h>
  20 #include <sound/core.h>
  21 #include <sound/pcm.h>
  22 #include <sound/pcm_params.h>
  23 #include <sound/tlv.h>
  24 #include <sound/soc.h>
  25 #include <sound/soc-dapm.h>
  26 #include <sound/initval.h>
  27 #include <sound/wm8993.h>
  28
  29 #include "wm8993.h"
  30 #include "wm_hubs.h"
  31
  32 static u16 wm8993_reg_defaults[WM8993_REGISTER_COUNT] = {
  33         0x8993,     /* R0   - Software Reset */
  34         0x0000,     /* R1   - Power Management (1) */
  35         0x6000,     /* R2   - Power Management (2) */
  36         0x0000,     /* R3   - Power Management (3) */
  37         0x4050,     /* R4   - Audio Interface (1) */
  38         0x4000,     /* R5   - Audio Interface (2) */
  39         0x01C8,     /* R6   - Clocking 1 */
  40         0x0000,     /* R7   - Clocking 2 */
  41         0x0000,     /* R8   - Audio Interface (3) */
  42         0x0040,     /* R9   - Audio Interface (4) */
  43         0x0004,     /* R10  - DAC CTRL */
  44         0x00C0,     /* R11  - Left DAC Digital Volume */
  45         0x00C0,     /* R12  - Right DAC Digital Volume */
  46         0x0000,     /* R13  - Digital Side Tone */
  47         0x0300,     /* R14  - ADC CTRL */
  48         0x00C0,     /* R15  - Left ADC Digital Volume */
  49         0x00C0,     /* R16  - Right ADC Digital Volume */
  50         0x0000,     /* R17 */
  51         0x0000,     /* R18  - GPIO CTRL 1 */
  52         0x0010,     /* R19  - GPIO1 */
  53         0x0000,     /* R20  - IRQ_DEBOUNCE */
  54         0x0000,     /* R21 */
  55         0x8000,     /* R22  - GPIOCTRL 2 */
  56         0x0800,     /* R23  - GPIO_POL */
  57         0x008B,     /* R24  - Left Line Input 1&2 Volume */
  58         0x008B,     /* R25  - Left Line Input 3&4 Volume */
  59         0x008B,     /* R26  - Right Line Input 1&2 Volume */
  60         0x008B,     /* R27  - Right Line Input 3&4 Volume */
  61         0x006D,     /* R28  - Left Output Volume */
  62         0x006D,     /* R29  - Right Output Volume */
  63         0x0066,     /* R30  - Line Outputs Volume */
  64         0x0020,     /* R31  - HPOUT2 Volume */
  65         0x0079,     /* R32  - Left OPGA Volume */
  66         0x0079,     /* R33  - Right OPGA Volume */
  67         0x0003,     /* R34  - SPKMIXL Attenuation */
  68         0x0003,     /* R35  - SPKMIXR Attenuation */
  69         0x0011,     /* R36  - SPKOUT Mixers */
  70         0x0100,     /* R37  - SPKOUT Boost */
  71         0x0079,     /* R38  - Speaker Volume Left */
  72         0x0079,     /* R39  - Speaker Volume Right */
  73         0x0000,     /* R40  - Input Mixer2 */
  74         0x0000,     /* R41  - Input Mixer3 */
  75         0x0000,     /* R42  - Input Mixer4 */
  76         0x0000,     /* R43  - Input Mixer5 */
  77         0x0000,     /* R44  - Input Mixer6 */
  78         0x0000,     /* R45  - Output Mixer1 */
  79         0x0000,     /* R46  - Output Mixer2 */
  80         0x0000,     /* R47  - Output Mixer3 */
  81         0x0000,     /* R48  - Output Mixer4 */
  82         0x0000,     /* R49  - Output Mixer5 */
  83         0x0000,     /* R50  - Output Mixer6 */
  84         0x0000,     /* R51  - HPOUT2 Mixer */
  85         0x0000,     /* R52  - Line Mixer1 */
  86         0x0000,     /* R53  - Line Mixer2 */
  87         0x0000,     /* R54  - Speaker Mixer */
  88         0x0000,     /* R55  - Additional Control */
  89         0x0000,     /* R56  - AntiPOP1 */
  90         0x0000,     /* R57  - AntiPOP2 */
  91         0x0000,     /* R58  - MICBIAS */
  92         0x0000,     /* R59 */
  93         0x0000,     /* R60  - FLL Control 1 */
  94         0x0000,     /* R61  - FLL Control 2 */
  95         0x0000,     /* R62  - FLL Control 3 */
  96         0x2EE0,     /* R63  - FLL Control 4 */
  97         0x0002,     /* R64  - FLL Control 5 */
  98         0x2287,     /* R65  - Clocking 3 */
  99         0x025F,     /* R66  - Clocking 4 */
 100         0x0000,     /* R67  - MW Slave Control */
 101         0x0000,     /* R68 */
 102         0x0002,     /* R69  - Bus Control 1 */
 103         0x0000,     /* R70  - Write Sequencer 0 */
 104         0x0000,     /* R71  - Write Sequencer 1 */
 105         0x0000,     /* R72  - Write Sequencer 2 */
 106         0x0000,     /* R73  - Write Sequencer 3 */
 107         0x0000,     /* R74  - Write Sequencer 4 */
 108         0x0000,     /* R75  - Write Sequencer 5 */
 109         0x1F25,     /* R76  - Charge Pump 1 */
 110         0x0000,     /* R77 */
 111         0x0000,     /* R78 */
 112         0x0000,     /* R79 */
 113         0x0000,     /* R80 */
 114         0x0000,     /* R81  - Class W 0 */
 115         0x0000,     /* R82 */
 116         0x0000,     /* R83 */
 117         0x0000,     /* R84  - DC Servo 0 */
 118         0x054A,     /* R85  - DC Servo 1 */
 119         0x0000,     /* R86 */
 120         0x0000,     /* R87  - DC Servo 3 */
 121         0x0000,     /* R88  - DC Servo Readback 0 */
 122         0x0000,     /* R89  - DC Servo Readback 1 */
 123         0x0000,     /* R90  - DC Servo Readback 2 */
 124         0x0000,     /* R91 */
 125         0x0000,     /* R92 */
 126         0x0000,     /* R93 */
 127         0x0000,     /* R94 */
 128         0x0000,     /* R95 */
 129         0x0100,     /* R96  - Analogue HP 0 */
 130         0x0000,     /* R97 */
 131         0x0000,     /* R98  - EQ1 */
 132         0x000C,     /* R99  - EQ2 */
 133         0x000C,     /* R100 - EQ3 */
 134         0x000C,     /* R101 - EQ4 */
 135         0x000C,     /* R102 - EQ5 */
 136         0x000C,     /* R103 - EQ6 */
 137         0x0FCA,     /* R104 - EQ7 */
 138         0x0400,     /* R105 - EQ8 */
 139         0x00D8,     /* R106 - EQ9 */
 140         0x1EB5,     /* R107 - EQ10 */
 141         0xF145,     /* R108 - EQ11 */
 142         0x0B75,     /* R109 - EQ12 */
 143         0x01C5,     /* R110 - EQ13 */
 144         0x1C58,     /* R111 - EQ14 */
 145         0xF373,     /* R112 - EQ15 */
 146         0x0A54,     /* R113 - EQ16 */
 147         0x0558,     /* R114 - EQ17 */
 148         0x168E,     /* R115 - EQ18 */
 149         0xF829,     /* R116 - EQ19 */
 150         0x07AD,     /* R117 - EQ20 */
 151         0x1103,     /* R118 - EQ21 */
 152         0x0564,     /* R119 - EQ22 */
 153         0x0559,     /* R120 - EQ23 */
 154         0x4000,     /* R121 - EQ24 */
 155         0x0000,     /* R122 - Digital Pulls */
 156         0x0F08,     /* R123 - DRC Control 1 */
 157         0x0000,     /* R124 - DRC Control 2 */
 158         0x0080,     /* R125 - DRC Control 3 */
 159         0x0000,     /* R126 - DRC Control 4 */
 160 };
 161
 162 static struct {
 163         int ratio;
 164         int clk_sys_rate;
 165 } clk_sys_rates[] = {
 166         { 64,   0 },
 167         { 128,  1 },
 168         { 192,  2 },
 169         { 256,  3 },
 170         { 384,  4 },
 171         { 512,  5 },
 172         { 768,  6 },
 173         { 1024, 7 },
 174         { 1408, 8 },
 175         { 1536, 9 },
 176 };
 177
 178 static struct {
 179         int rate;
 180         int sample_rate;
 181 } sample_rates[] = {
 182         { 8000,  0  },
 183         { 11025, 1  },
 184         { 12000, 1  },
 185         { 16000, 2  },
 186         { 22050, 3  },
 187         { 24000, 3  },
 188         { 32000, 4  },
 189         { 44100, 5  },
 190         { 48000, 5  },
 191 };
 192
 193 static struct {
 194         int div; /* *10 due to .5s */
 195         int bclk_div;
 196 } bclk_divs[] = {
 197         { 10,  0  },
 198         { 15,  1  },
 199         { 20,  2  },
 200         { 30,  3  },
 201         { 40,  4  },
 202         { 55,  5  },
 203         { 60,  6  },
 204         { 80,  7  },
 205         { 110, 8  },
 206         { 120, 9  },
 207         { 160, 10 },
 208         { 220, 11 },
 209         { 240, 12 },
 210         { 320, 13 },
 211         { 440, 14 },
 212         { 480, 15 },
 213 };
 214
 215 struct wm8993_priv {
 216         u16 reg_cache[WM8993_REGISTER_COUNT];
 217         struct wm8993_platform_data pdata;
 218         struct snd_soc_codec codec;
 219         int master;
 220         int sysclk_source;
 221         int tdm_slots;
 222         int tdm_width;
 223         unsigned int mclk_rate;
 224         unsigned int sysclk_rate;
 225         unsigned int fs;
 226         unsigned int bclk;
 227         int class_w_users;
 228         unsigned int fll_fref;
 229         unsigned int fll_fout;
 230 };
 231
 232 static unsigned int wm8993_read_hw(struct snd_soc_codec *codec, u8 reg)
 233 {
 234         struct i2c_msg xfer[2];
 235         u16 data;
 236         int ret;
 237         struct i2c_client *i2c = codec->control_data;
 238
 239         /* Write register */
 240         xfer[0].addr = i2c->addr;
 241         xfer[0].flags = 0;
 242         xfer[0].len = 1;
 243         xfer[0].buf = &reg;
 244
 245         /* Read data */
 246         xfer[1].addr = i2c->addr;
 247         xfer[1].flags = I2C_M_RD;
 248         xfer[1].len = 2;
 249         xfer[1].buf = (u8 *)&data;
 250
 251         ret = i2c_transfer(i2c->adapter, xfer, 2);
 252         if (ret != 2) {
 253                 dev_err(codec->dev, "Failed to read 0x%x: %d\n", reg, ret);
 254                 return 0;
 255         }
 256
 257         return (data >> 8) | ((data & 0xff) << 8);
 258 }
 259
 260 static int wm8993_volatile(unsigned int reg)
 261 {
 262         switch (reg) {
 263         case WM8993_SOFTWARE_RESET:
 264         case WM8993_DC_SERVO_0:
 265         case WM8993_DC_SERVO_READBACK_0:
 266         case WM8993_DC_SERVO_READBACK_1:
 267         case WM8993_DC_SERVO_READBACK_2:
 268                 return 1;
 269         default:
 270                 return 0;
 271         }
 272 }
 273
 274 static unsigned int wm8993_read(struct snd_soc_codec *codec,
 275                                 unsigned int reg)
 276 {
 277         u16 *reg_cache = codec->reg_cache;
 278
 279         BUG_ON(reg > WM8993_MAX_REGISTER);
 280
 281         if (wm8993_volatile(reg))
 282                 return wm8993_read_hw(codec, reg);
 283         else
 284                 return reg_cache[reg];
 285 }
 286
 287 static int wm8993_write(struct snd_soc_codec *codec, unsigned int reg,
 288                         unsigned int value)
 289 {
 290         u16 *reg_cache = codec->reg_cache;
 291         u8 data[3];
 292         int ret;
 293
 294         BUG_ON(reg > WM8993_MAX_REGISTER);
 295
 296         /* data is
 297          *   D15..D9 WM8993 register offset
 298          *   D8...D0 register data
 299          */
 300         data[0] = reg;
 301         data[1] = value >> 8;
 302         data[2] = value & 0x00ff;
 303
 304         if (!wm8993_volatile(reg))
 305                 reg_cache[reg] = value;
 306
 307         ret = codec->hw_write(codec->control_data, data, 3);
 308
 309         if (ret == 3)
 310                 return 0;
 311         if (ret < 0)
 312                 return ret;
 313         return -EIO;
 314 }
 315
 316 struct _fll_div {
 317         u16 fll_fratio;
 318         u16 fll_outdiv;
 319         u16 fll_clk_ref_div;
 320         u16 n;
 321         u16 k;
 322 };
 323
 324 /* The size in bits of the FLL divide multiplied by 10
 325  * to allow rounding later */
 326 #define FIXED_FLL_SIZE ((1 << 16) * 10)
 327
 328 static struct {
 329         unsigned int min;
 330         unsigned int max;
 331         u16 fll_fratio;
 332         int ratio;
 333 } fll_fratios[] = {
 334         {       0,    64000, 4, 16 },
 335         {   64000,   128000, 3,  8 },
 336         {  128000,   256000, 2,  4 },
 337         {  256000,  1000000, 1,  2 },
 338         { 1000000, 13500000, 0,  1 },
 339 };
 340
 341 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
 342                        unsigned int Fout)
 343 {
 344         u64 Kpart;
 345         unsigned int K, Ndiv, Nmod, target;
 346         unsigned int div;
 347         int i;
 348
 349         /* Fref must be <=13.5MHz */
 350         div = 1;
 351         fll_div->fll_clk_ref_div = 0;
 352         while ((Fref / div) > 13500000) {
 353                 div *= 2;
 354                 fll_div->fll_clk_ref_div++;
 355
 356                 if (div > 8) {
 357                         pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
 358                                Fref);
 359                         return -EINVAL;
 360                 }
 361         }
 362
 363         pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
 364
 365         /* Apply the division for our remaining calculations */
 366         Fref /= div;
 367
 368         /* Fvco should be 90-100MHz; don't check the upper bound */
 369         div = 0;
 370         target = Fout * 2;
 371         while (target < 90000000) {
 372                 div++;
 373                 target *= 2;
 374                 if (div > 7) {
 375                         pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
 376                                Fout);
 377                         return -EINVAL;
 378                 }
 379         }
 380         fll_div->fll_outdiv = div;
 381
 382         pr_debug("Fvco=%dHz\n", target);
 383
 384         /* Find an appropraite FLL_FRATIO and factor it out of the target */
 385         for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
 386                 if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
 387                         fll_div->fll_fratio = fll_fratios[i].fll_fratio;
 388                         target /= fll_fratios[i].ratio;
 389                         break;
 390                 }
 391         }
 392         if (i == ARRAY_SIZE(fll_fratios)) {
 393                 pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
 394                 return -EINVAL;
 395         }
 396
 397         /* Now, calculate N.K */
 398         Ndiv = target / Fref;
 399
 400         fll_div->n = Ndiv;
 401         Nmod = target % Fref;
 402         pr_debug("Nmod=%d\n", Nmod);
 403
 404         /* Calculate fractional part - scale up so we can round. */
 405         Kpart = FIXED_FLL_SIZE * (long long)Nmod;
 406
 407         do_div(Kpart, Fref);
 408
 409         K = Kpart & 0xFFFFFFFF;
 410
 411         if ((K % 10) >= 5)
 412                 K += 5;
 413
 414         /* Move down to proper range now rounding is done */
 415         fll_div->k = K / 10;
 416
 417         pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
 418                  fll_div->n, fll_div->k,
 419                  fll_div->fll_fratio, fll_div->fll_outdiv,
 420                  fll_div->fll_clk_ref_div);
 421
 422         return 0;
 423 }
 424
 425 static int wm8993_set_fll(struct snd_soc_dai *dai, int fll_id,
 426                           unsigned int Fref, unsigned int Fout)
 427 {
 428         struct snd_soc_codec *codec = dai->codec;
 429         struct wm8993_priv *wm8993 = codec->private_data;
 430         u16 reg1, reg4, reg5;
 431         struct _fll_div fll_div;
 432         int ret;
 433
 434         /* Any change? */
 435         if (Fref == wm8993->fll_fref && Fout == wm8993->fll_fout)
 436                 return 0;
 437
 438         /* Disable the FLL */
 439         if (Fout == 0) {
 440                 dev_dbg(codec->dev, "FLL disabled\n");
 441                 wm8993->fll_fref = 0;
 442                 wm8993->fll_fout = 0;
 443
 444                 reg1 = wm8993_read(codec, WM8993_FLL_CONTROL_1);
 445                 reg1 &= ~WM8993_FLL_ENA;
 446                 wm8993_write(codec, WM8993_FLL_CONTROL_1, reg1);
 447
 448                 return 0;
 449         }
 450
 451         ret = fll_factors(&fll_div, Fref, Fout);
 452         if (ret != 0)
 453                 return ret;
 454
 455         reg5 = wm8993_read(codec, WM8993_FLL_CONTROL_5);
 456         reg5 &= ~WM8993_FLL_CLK_SRC_MASK;
 457
 458         switch (fll_id) {
 459         case WM8993_FLL_MCLK:
 460                 break;
 461
 462         case WM8993_FLL_LRCLK:
 463                 reg5 |= 1;
 464                 break;
 465
 466         case WM8993_FLL_BCLK:
 467                 reg5 |= 2;
 468                 break;
 469
 470         default:
 471                 dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id);
 472                 return -EINVAL;
 473         }
 474
 475         /* Any FLL configuration change requires that the FLL be
 476          * disabled first. */
 477         reg1 = wm8993_read(codec, WM8993_FLL_CONTROL_1);
 478         reg1 &= ~WM8993_FLL_ENA;
 479         wm8993_write(codec, WM8993_FLL_CONTROL_1, reg1);
 480
 481         /* Apply the configuration */
 482         if (fll_div.k)
 483                 reg1 |= WM8993_FLL_FRAC_MASK;
 484         else
 485                 reg1 &= ~WM8993_FLL_FRAC_MASK;
 486         wm8993_write(codec, WM8993_FLL_CONTROL_1, reg1);
 487
 488         wm8993_write(codec, WM8993_FLL_CONTROL_2,
 489                      (fll_div.fll_outdiv << WM8993_FLL_OUTDIV_SHIFT) |
 490                      (fll_div.fll_fratio << WM8993_FLL_FRATIO_SHIFT));
 491         wm8993_write(codec, WM8993_FLL_CONTROL_3, fll_div.k);
 492
 493         reg4 = wm8993_read(codec, WM8993_FLL_CONTROL_4);
 494         reg4 &= ~WM8993_FLL_N_MASK;
 495         reg4 |= fll_div.n << WM8993_FLL_N_SHIFT;
 496         wm8993_write(codec, WM8993_FLL_CONTROL_4, reg4);
 497
 498         reg5 &= ~WM8993_FLL_CLK_REF_DIV_MASK;
 499         reg5 |= fll_div.fll_clk_ref_div << WM8993_FLL_CLK_REF_DIV_SHIFT;
 500         wm8993_write(codec, WM8993_FLL_CONTROL_5, reg5);
 501
 502         /* Enable the FLL */
 503         wm8993_write(codec, WM8993_FLL_CONTROL_1, reg1 | WM8993_FLL_ENA);
 504
 505         dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
 506
 507         wm8993->fll_fref = Fref;
 508         wm8993->fll_fout = Fout;
 509
 510         return 0;
 511 }
 512
 513 static int configure_clock(struct snd_soc_codec *codec)
 514 {
 515         struct wm8993_priv *wm8993 = codec->private_data;
 516         unsigned int reg;
 517
 518         /* This should be done on init() for bypass paths */
 519         switch (wm8993->sysclk_source) {
 520         case WM8993_SYSCLK_MCLK:
 521                 dev_dbg(codec->dev, "Using %dHz MCLK\n", wm8993->mclk_rate);
 522
 523                 reg = wm8993_read(codec, WM8993_CLOCKING_2);
 524                 reg &= ~(WM8993_MCLK_DIV | WM8993_SYSCLK_SRC);
 525                 if (wm8993->mclk_rate > 13500000) {
 526                         reg |= WM8993_MCLK_DIV;
 527                         wm8993->sysclk_rate = wm8993->mclk_rate / 2;
 528                 } else {
 529                         reg &= ~WM8993_MCLK_DIV;
 530                         wm8993->sysclk_rate = wm8993->mclk_rate;
 531                 }
 532                 wm8993_write(codec, WM8993_CLOCKING_2, reg);
 533                 break;
 534
 535         case WM8993_SYSCLK_FLL:
 536                 dev_dbg(codec->dev, "Using %dHz FLL clock\n",
 537                         wm8993->fll_fout);
 538
 539                 reg = wm8993_read(codec, WM8993_CLOCKING_2);
 540                 reg |= WM8993_SYSCLK_SRC;
 541                 if (wm8993->fll_fout > 13500000) {
 542                         reg |= WM8993_MCLK_DIV;
 543                         wm8993->sysclk_rate = wm8993->fll_fout / 2;
 544                 } else {
 545                         reg &= ~WM8993_MCLK_DIV;
 546                         wm8993->sysclk_rate = wm8993->fll_fout;
 547                 }
 548                 wm8993_write(codec, WM8993_CLOCKING_2, reg);
 549                 break;
 550
 551         default:
 552                 dev_err(codec->dev, "System clock not configured\n");
 553                 return -EINVAL;
 554         }
 555
 556         dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm8993->sysclk_rate);
 557
 558         return 0;
 559 }
 560
 561 static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0);
 562 static const DECLARE_TLV_DB_SCALE(drc_comp_threash, -4500, 75, 0);
 563 static const DECLARE_TLV_DB_SCALE(drc_comp_amp, -2250, 75, 0);
 564 static const DECLARE_TLV_DB_SCALE(drc_min_tlv, -1800, 600, 0);
 565 static const unsigned int drc_max_tlv[] = {
 566         TLV_DB_RANGE_HEAD(4),
 567         0, 2, TLV_DB_SCALE_ITEM(1200, 600, 0),
 568         3, 3, TLV_DB_SCALE_ITEM(3600, 0, 0),
 569 };
 570 static const DECLARE_TLV_DB_SCALE(drc_qr_tlv, 1200, 600, 0);
 571 static const DECLARE_TLV_DB_SCALE(drc_startup_tlv, -1800, 300, 0);
 572 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
 573 static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
 574 static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
 575
 576 static const char *dac_deemph_text[] = {
 577         "None",
 578         "32kHz",
 579         "44.1kHz",
 580         "48kHz",
 581 };
 582
 583 static const struct soc_enum dac_deemph =
 584         SOC_ENUM_SINGLE(WM8993_DAC_CTRL, 4, 4, dac_deemph_text);
 585
 586 static const char *adc_hpf_text[] = {
 587         "Hi-Fi",
 588         "Voice 1",
 589         "Voice 2",
 590         "Voice 3",
 591 };
 592
 593 static const struct soc_enum adc_hpf =
 594         SOC_ENUM_SINGLE(WM8993_ADC_CTRL, 5, 4, adc_hpf_text);
 595
 596 static const char *drc_path_text[] = {
 597         "ADC",
 598         "DAC"
 599 };
 600
 601 static const struct soc_enum drc_path =
 602         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_1, 14, 2, drc_path_text);
 603
 604 static const char *drc_r0_text[] = {
 605         "1",
 606         "1/2",
 607         "1/4",
 608         "1/8",
 609         "1/16",
 610         "0",
 611 };
 612
 613 static const struct soc_enum drc_r0 =
 614         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 8, 6, drc_r0_text);
 615
 616 static const char *drc_r1_text[] = {
 617         "1",
 618         "1/2",
 619         "1/4",
 620         "1/8",
 621         "0",
 622 };
 623
 624 static const struct soc_enum drc_r1 =
 625         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_4, 13, 5, drc_r1_text);
 626
 627 static const char *drc_attack_text[] = {
 628         "Reserved",
 629         "181us",
 630         "363us",
 631         "726us",
 632         "1.45ms",
 633         "2.9ms",
 634         "5.8ms",
 635         "11.6ms",
 636         "23.2ms",
 637         "46.4ms",
 638         "92.8ms",
 639         "185.6ms",
 640 };
 641
 642 static const struct soc_enum drc_attack =
 643         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_2, 12, 12, drc_attack_text);
 644
 645 static const char *drc_decay_text[] = {
 646         "186ms",
 647         "372ms",
 648         "743ms",
 649         "1.49s",
 650         "2.97ms",
 651         "5.94ms",
 652         "11.89ms",
 653         "23.78ms",
 654         "47.56ms",
 655 };
 656
 657 static const struct soc_enum drc_decay =
 658         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_2, 8, 9, drc_decay_text);
 659
 660 static const char *drc_ff_text[] = {
 661         "5 samples",
 662         "9 samples",
 663 };
 664
 665 static const struct soc_enum drc_ff =
 666         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 7, 2, drc_ff_text);
 667
 668 static const char *drc_qr_rate_text[] = {
 669         "0.725ms",
 670         "1.45ms",
 671         "5.8ms",
 672 };
 673
 674 static const struct soc_enum drc_qr_rate =
 675         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 0, 3, drc_qr_rate_text);
 676
 677 static const char *drc_smooth_text[] = {
 678         "Low",
 679         "Medium",
 680         "High",
 681 };
 682
 683 static const struct soc_enum drc_smooth =
 684         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_1, 4, 3, drc_smooth_text);
 685
 686 static const struct snd_kcontrol_new wm8993_snd_controls[] = {
 687 SOC_DOUBLE_TLV("Digital Sidetone Volume", WM8993_DIGITAL_SIDE_TONE,
 688                5, 9, 12, 0, sidetone_tlv),
 689
 690 SOC_SINGLE("DRC Switch", WM8993_DRC_CONTROL_1, 15, 1, 0),
 691 SOC_ENUM("DRC Path", drc_path),
 692 SOC_SINGLE_TLV("DRC Compressor Threashold Volume", WM8993_DRC_CONTROL_2,
 693                2, 60, 1, drc_comp_threash),
 694 SOC_SINGLE_TLV("DRC Compressor Amplitude Volume", WM8993_DRC_CONTROL_3,
 695                11, 30, 1, drc_comp_amp),
 696 SOC_ENUM("DRC R0", drc_r0),
 697 SOC_ENUM("DRC R1", drc_r1),
 698 SOC_SINGLE_TLV("DRC Minimum Volume", WM8993_DRC_CONTROL_1, 2, 3, 1,
 699                drc_min_tlv),
 700 SOC_SINGLE_TLV("DRC Maximum Volume", WM8993_DRC_CONTROL_1, 0, 3, 0,
 701                drc_max_tlv),
 702 SOC_ENUM("DRC Attack Rate", drc_attack),
 703 SOC_ENUM("DRC Decay Rate", drc_decay),
 704 SOC_ENUM("DRC FF Delay", drc_ff),
 705 SOC_SINGLE("DRC Anti-clip Switch", WM8993_DRC_CONTROL_1, 9, 1, 0),
 706 SOC_SINGLE("DRC Quick Release Switch", WM8993_DRC_CONTROL_1, 10, 1, 0),
 707 SOC_SINGLE_TLV("DRC Quick Release Volume", WM8993_DRC_CONTROL_3, 2, 3, 0,
 708                drc_qr_tlv),
 709 SOC_ENUM("DRC Quick Release Rate", drc_qr_rate),
 710 SOC_SINGLE("DRC Smoothing Switch", WM8993_DRC_CONTROL_1, 11, 1, 0),
 711 SOC_SINGLE("DRC Smoothing Hysteresis Switch", WM8993_DRC_CONTROL_1, 8, 1, 0),
 712 SOC_ENUM("DRC Smoothing Hysteresis Threashold", drc_smooth),
 713 SOC_SINGLE_TLV("DRC Startup Volume", WM8993_DRC_CONTROL_4, 8, 18, 0,
 714                drc_startup_tlv),
 715
 716 SOC_SINGLE("EQ Switch", WM8993_EQ1, 0, 1, 0),
 717
 718 SOC_DOUBLE_R_TLV("Capture Volume", WM8993_LEFT_ADC_DIGITAL_VOLUME,
 719                  WM8993_RIGHT_ADC_DIGITAL_VOLUME, 1, 96, 0, digital_tlv),
 720 SOC_SINGLE("ADC High Pass Filter Switch", WM8993_ADC_CTRL, 8, 1, 0),
 721 SOC_ENUM("ADC High Pass Filter Mode", adc_hpf),
 722
 723 SOC_DOUBLE_R_TLV("Playback Volume", WM8993_LEFT_DAC_DIGITAL_VOLUME,
 724                  WM8993_RIGHT_DAC_DIGITAL_VOLUME, 1, 96, 0, digital_tlv),
 725 SOC_SINGLE_TLV("Playback Boost Volume", WM8993_AUDIO_INTERFACE_2, 10, 3, 0,
 726                dac_boost_tlv),
 727 SOC_ENUM("DAC Deemphasis", dac_deemph),
 728
 729 SOC_SINGLE_TLV("SPKL DAC Volume", WM8993_SPKMIXL_ATTENUATION,
 730                2, 1, 1, wm_hubs_spkmix_tlv),
 731
 732 SOC_SINGLE_TLV("SPKR DAC Volume", WM8993_SPKMIXR_ATTENUATION,
 733                2, 1, 1, wm_hubs_spkmix_tlv),
 734 };
 735
 736 static const struct snd_kcontrol_new wm8993_eq_controls[] = {
 737 SOC_SINGLE_TLV("EQ1 Volume", WM8993_EQ2, 0, 24, 0, eq_tlv),
 738 SOC_SINGLE_TLV("EQ2 Volume", WM8993_EQ3, 0, 24, 0, eq_tlv),
 739 SOC_SINGLE_TLV("EQ3 Volume", WM8993_EQ4, 0, 24, 0, eq_tlv),
 740 SOC_SINGLE_TLV("EQ4 Volume", WM8993_EQ5, 0, 24, 0, eq_tlv),
 741 SOC_SINGLE_TLV("EQ5 Volume", WM8993_EQ6, 0, 24, 0, eq_tlv),
 742 };
 743
 744 static int clk_sys_event(struct snd_soc_dapm_widget *w,
 745                          struct snd_kcontrol *kcontrol, int event)
 746 {
 747         struct snd_soc_codec *codec = w->codec;
 748
 749         switch (event) {
 750         case SND_SOC_DAPM_PRE_PMU:
 751                 return configure_clock(codec);
 752
 753         case SND_SOC_DAPM_POST_PMD:
 754                 break;
 755         }
 756
 757         return 0;
 758 }
 759
 760 /*
 761  * When used with DAC outputs only the WM8993 charge pump supports
 762  * operation in class W mode, providing very low power consumption
 763  * when used with digital sources.  Enable and disable this mode
 764  * automatically depending on the mixer configuration.
 765  *
 766  * Currently the only supported paths are the direct DAC->headphone
 767  * paths (which provide minimum power consumption anyway).
 768  */
 769 static int class_w_put(struct snd_kcontrol *kcontrol,
 770                        struct snd_ctl_elem_value *ucontrol)
 771 {
 772         struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
 773         struct snd_soc_codec *codec = widget->codec;
 774         struct wm8993_priv *wm8993 = codec->private_data;
 775         int ret;
 776
 777         /* Turn it off if we're using the main output mixer */
 778         if (ucontrol->value.integer.value[0] == 0) {
 779                 if (wm8993->class_w_users == 0) {
 780                         dev_dbg(codec->dev, "Disabling Class W\n");
 781                         snd_soc_update_bits(codec, WM8993_CLASS_W_0,
 782                                             WM8993_CP_DYN_FREQ |
 783                                             WM8993_CP_DYN_V,
 784                                             0);
 785                 }
 786                 wm8993->class_w_users++;
 787         }
 788
 789         /* Implement the change */
 790         ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
 791
 792         /* Enable it if we're using the direct DAC path */
 793         if (ucontrol->value.integer.value[0] == 1) {
 794                 if (wm8993->class_w_users == 1) {
 795                         dev_dbg(codec->dev, "Enabling Class W\n");
 796                         snd_soc_update_bits(codec, WM8993_CLASS_W_0,
 797                                             WM8993_CP_DYN_FREQ |
 798                                             WM8993_CP_DYN_V,
 799                                             WM8993_CP_DYN_FREQ |
 800                                             WM8993_CP_DYN_V);
 801                 }
 802                 wm8993->class_w_users--;
 803         }
 804
 805         dev_dbg(codec->dev, "Indirect DAC use count now %d\n",
 806                 wm8993->class_w_users);
 807
 808         return ret;
 809 }
 810
 811 #define SOC_DAPM_ENUM_W(xname, xenum) \
 812 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 813         .info = snd_soc_info_enum_double, \
 814         .get = snd_soc_dapm_get_enum_double, \
 815         .put = class_w_put, \
 816         .private_value = (unsigned long)&xenum }
 817
 818 static const char *hp_mux_text[] = {
 819         "Mixer",
 820         "DAC",
 821 };
 822
 823 static const struct soc_enum hpl_enum =
 824         SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER1, 8, 2, hp_mux_text);
 825
 826 static const struct snd_kcontrol_new hpl_mux =
 827         SOC_DAPM_ENUM_W("Left Headphone Mux", hpl_enum);
 828
 829 static const struct soc_enum hpr_enum =
 830         SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER2, 8, 2, hp_mux_text);
 831
 832 static const struct snd_kcontrol_new hpr_mux =
 833         SOC_DAPM_ENUM_W("Right Headphone Mux", hpr_enum);
 834
 835 static const struct snd_kcontrol_new left_speaker_mixer[] = {
 836 SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 7, 1, 0),
 837 SOC_DAPM_SINGLE("IN1LP Switch", WM8993_SPEAKER_MIXER, 5, 1, 0),
 838 SOC_DAPM_SINGLE("Output Switch", WM8993_SPEAKER_MIXER, 3, 1, 0),
 839 SOC_DAPM_SINGLE("DAC Switch", WM8993_SPEAKER_MIXER, 6, 1, 0),
 840 };
 841
 842 static const struct snd_kcontrol_new right_speaker_mixer[] = {
 843 SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 6, 1, 0),
 844 SOC_DAPM_SINGLE("IN1RP Switch", WM8993_SPEAKER_MIXER, 4, 1, 0),
 845 SOC_DAPM_SINGLE("Output Switch", WM8993_SPEAKER_MIXER, 2, 1, 0),
 846 SOC_DAPM_SINGLE("DAC Switch", WM8993_SPEAKER_MIXER, 0, 1, 0),
 847 };
 848
 849 static const char *aif_text[] = {
 850         "Left", "Right"
 851 };
 852
 853 static const struct soc_enum aifoutl_enum =
 854         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_1, 15, 2, aif_text);
 855
 856 static const struct snd_kcontrol_new aifoutl_mux =
 857         SOC_DAPM_ENUM("AIFOUTL Mux", aifoutl_enum);
 858
 859 static const struct soc_enum aifoutr_enum =
 860         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_1, 14, 2, aif_text);
 861
 862 static const struct snd_kcontrol_new aifoutr_mux =
 863         SOC_DAPM_ENUM("AIFOUTR Mux", aifoutr_enum);
 864
 865 static const struct soc_enum aifinl_enum =
 866         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_2, 15, 2, aif_text);
 867
 868 static const struct snd_kcontrol_new aifinl_mux =
 869         SOC_DAPM_ENUM("AIFINL Mux", aifinl_enum);
 870
 871 static const struct soc_enum aifinr_enum =
 872         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_2, 14, 2, aif_text);
 873
 874 static const struct snd_kcontrol_new aifinr_mux =
 875         SOC_DAPM_ENUM("AIFINR Mux", aifinr_enum);
 876
 877 static const char *sidetone_text[] = {
 878         "None", "Left", "Right"
 879 };
 880
 881 static const struct soc_enum sidetonel_enum =
 882         SOC_ENUM_SINGLE(WM8993_DIGITAL_SIDE_TONE, 2, 3, sidetone_text);
 883
 884 static const struct snd_kcontrol_new sidetonel_mux =
 885         SOC_DAPM_ENUM("Left Sidetone", sidetonel_enum);
 886
 887 static const struct soc_enum sidetoner_enum =
 888         SOC_ENUM_SINGLE(WM8993_DIGITAL_SIDE_TONE, 0, 3, sidetone_text);
 889
 890 static const struct snd_kcontrol_new sidetoner_mux =
 891         SOC_DAPM_ENUM("Right Sidetone", sidetoner_enum);
 892
 893 static const struct snd_soc_dapm_widget wm8993_dapm_widgets[] = {
 894 SND_SOC_DAPM_SUPPLY("CLK_SYS", WM8993_BUS_CONTROL_1, 1, 0, clk_sys_event,
 895                     SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 896 SND_SOC_DAPM_SUPPLY("TOCLK", WM8993_CLOCKING_1, 14, 0, NULL, 0),
 897 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8993_CLOCKING_3, 0, 0, NULL, 0),
 898
 899 SND_SOC_DAPM_ADC("ADCL", NULL, WM8993_POWER_MANAGEMENT_2, 1, 0),
 900 SND_SOC_DAPM_ADC("ADCR", NULL, WM8993_POWER_MANAGEMENT_2, 0, 0),
 901
 902 SND_SOC_DAPM_MUX("AIFOUTL Mux", SND_SOC_NOPM, 0, 0, &aifoutl_mux),
 903 SND_SOC_DAPM_MUX("AIFOUTR Mux", SND_SOC_NOPM, 0, 0, &aifoutr_mux),
 904
 905 SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0),
 906 SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0),
 907
 908 SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
 909 SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
 910
 911 SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &aifinl_mux),
 912 SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &aifinr_mux),
 913
 914 SND_SOC_DAPM_MUX("DACL Sidetone", SND_SOC_NOPM, 0, 0, &sidetonel_mux),
 915 SND_SOC_DAPM_MUX("DACR Sidetone", SND_SOC_NOPM, 0, 0, &sidetoner_mux),
 916
 917 SND_SOC_DAPM_DAC("DACL", NULL, WM8993_POWER_MANAGEMENT_3, 1, 0),
 918 SND_SOC_DAPM_DAC("DACR", NULL, WM8993_POWER_MANAGEMENT_3, 0, 0),
 919
 920 SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0, &hpl_mux),
 921 SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0, &hpr_mux),
 922
 923 SND_SOC_DAPM_MIXER("SPKL", WM8993_POWER_MANAGEMENT_3, 8, 0,
 924                    left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)),
 925 SND_SOC_DAPM_MIXER("SPKR", WM8993_POWER_MANAGEMENT_3, 9, 0,
 926                    right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer)),
 927
 928 };
 929
 930 static const struct snd_soc_dapm_route routes[] = {
 931         { "ADCL", NULL, "CLK_SYS" },
 932         { "ADCL", NULL, "CLK_DSP" },
 933         { "ADCR", NULL, "CLK_SYS" },
 934         { "ADCR", NULL, "CLK_DSP" },
 935
 936         { "AIFOUTL Mux", "Left", "ADCL" },
 937         { "AIFOUTL Mux", "Right", "ADCR" },
 938         { "AIFOUTR Mux", "Left", "ADCL" },
 939         { "AIFOUTR Mux", "Right", "ADCR" },
 940
 941         { "AIFOUTL", NULL, "AIFOUTL Mux" },
 942         { "AIFOUTR", NULL, "AIFOUTR Mux" },
 943
 944         { "DACL Mux", "Left", "AIFINL" },
 945         { "DACL Mux", "Right", "AIFINR" },
 946         { "DACR Mux", "Left", "AIFINL" },
 947         { "DACR Mux", "Right", "AIFINR" },
 948
 949         { "DACL Sidetone", "Left", "ADCL" },
 950         { "DACL Sidetone", "Right", "ADCR" },
 951         { "DACR Sidetone", "Left", "ADCL" },
 952         { "DACR Sidetone", "Right", "ADCR" },
 953
 954         { "DACL", NULL, "CLK_SYS" },
 955         { "DACL", NULL, "CLK_DSP" },
 956         { "DACL", NULL, "DACL Mux" },
 957         { "DACL", NULL, "DACL Sidetone" },
 958         { "DACR", NULL, "CLK_SYS" },
 959         { "DACR", NULL, "CLK_DSP" },
 960         { "DACR", NULL, "DACR Mux" },
 961         { "DACR", NULL, "DACR Sidetone" },
 962
 963         { "Left Output Mixer", "DAC Switch", "DACL" },
 964
 965         { "Right Output Mixer", "DAC Switch", "DACR" },
 966
 967         { "Left Output PGA", NULL, "CLK_SYS" },
 968
 969         { "Right Output PGA", NULL, "CLK_SYS" },
 970
 971         { "SPKL", "DAC Switch", "DACL" },
 972         { "SPKL", NULL, "CLK_SYS" },
 973
 974         { "SPKR", "DAC Switch", "DACR" },
 975         { "SPKR", NULL, "CLK_SYS" },
 976
 977         { "Left Headphone Mux", "DAC", "DACL" },
 978         { "Right Headphone Mux", "DAC", "DACR" },
 979 };
 980
 981 static int wm8993_set_bias_level(struct snd_soc_codec *codec,
 982                                  enum snd_soc_bias_level level)
 983 {
 984         struct wm8993_priv *wm8993 = codec->private_data;
 985
 986         switch (level) {
 987         case SND_SOC_BIAS_ON:
 988         case SND_SOC_BIAS_PREPARE:
 989                 /* VMID=2*40k */
 990                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
 991                                     WM8993_VMID_SEL_MASK, 0x2);
 992                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_2,
 993                                     WM8993_TSHUT_ENA, WM8993_TSHUT_ENA);
 994                 break;
 995
 996         case SND_SOC_BIAS_STANDBY:
 997                 if (codec->bias_level == SND_SOC_BIAS_OFF) {
 998                         /* Bring up VMID with fast soft start */
 999                         snd_soc_update_bits(codec, WM8993_ANTIPOP2,
1000                                             WM8993_STARTUP_BIAS_ENA |
1001                                             WM8993_VMID_BUF_ENA |
1002                                             WM8993_VMID_RAMP_MASK |
1003                                             WM8993_BIAS_SRC,
1004                                             WM8993_STARTUP_BIAS_ENA |
1005                                             WM8993_VMID_BUF_ENA |
1006                                             WM8993_VMID_RAMP_MASK |
1007                                             WM8993_BIAS_SRC);
1008
1009                         /* If either line output is single ended we
1010                          * need the VMID buffer */
1011                         if (!wm8993->pdata.lineout1_diff ||
1012                             !wm8993->pdata.lineout2_diff)
1013                                 snd_soc_update_bits(codec, WM8993_ANTIPOP1,
1014                                                  WM8993_LINEOUT_VMID_BUF_ENA,
1015                                                  WM8993_LINEOUT_VMID_BUF_ENA);
1016
1017                         /* VMID=2*40k */
1018                         snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
1019                                             WM8993_VMID_SEL_MASK |
1020                                             WM8993_BIAS_ENA,
1021                                             WM8993_BIAS_ENA | 0x2);
1022                         msleep(32);
1023
1024                         /* Switch to normal bias */
1025                         snd_soc_update_bits(codec, WM8993_ANTIPOP2,
1026                                             WM8993_BIAS_SRC |
1027                                             WM8993_STARTUP_BIAS_ENA, 0);
1028                 }
1029
1030                 /* VMID=2*240k */
1031                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
1032                                     WM8993_VMID_SEL_MASK, 0x4);
1033
1034                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_2,
1035                                     WM8993_TSHUT_ENA, 0);
1036                 break;
1037
1038         case SND_SOC_BIAS_OFF:
1039                 snd_soc_update_bits(codec, WM8993_ANTIPOP1,
1040                                     WM8993_LINEOUT_VMID_BUF_ENA, 0);
1041
1042                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
1043                                     WM8993_VMID_SEL_MASK | WM8993_BIAS_ENA,
1044                                     0);
1045                 break;
1046         }
1047
1048         codec->bias_level = level;
1049
1050         return 0;
1051 }
1052
1053 static int wm8993_set_sysclk(struct snd_soc_dai *codec_dai,
1054                              int clk_id, unsigned int freq, int dir)
1055 {
1056         struct snd_soc_codec *codec = codec_dai->codec;
1057         struct wm8993_priv *wm8993 = codec->private_data;
1058
1059         switch (clk_id) {
1060         case WM8993_SYSCLK_MCLK:
1061                 wm8993->mclk_rate = freq;
1062         case WM8993_SYSCLK_FLL:
1063                 wm8993->sysclk_source = clk_id;
1064                 break;
1065
1066         default:
1067                 return -EINVAL;
1068         }
1069
1070         return 0;
1071 }
1072
1073 static int wm8993_set_dai_fmt(struct snd_soc_dai *dai,
1074                               unsigned int fmt)
1075 {
1076         struct snd_soc_codec *codec = dai->codec;
1077         struct wm8993_priv *wm8993 = codec->private_data;
1078         unsigned int aif1 = wm8993_read(codec, WM8993_AUDIO_INTERFACE_1);
1079         unsigned int aif4 = wm8993_read(codec, WM8993_AUDIO_INTERFACE_4);
1080
1081         aif1 &= ~(WM8993_BCLK_DIR | WM8993_AIF_BCLK_INV |
1082                   WM8993_AIF_LRCLK_INV | WM8993_AIF_FMT_MASK);
1083         aif4 &= ~WM8993_LRCLK_DIR;
1084
1085         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1086         case SND_SOC_DAIFMT_CBS_CFS:
1087                 wm8993->master = 0;
1088                 break;
1089         case SND_SOC_DAIFMT_CBS_CFM:
1090                 aif4 |= WM8993_LRCLK_DIR;
1091                 wm8993->master = 1;
1092                 break;
1093         case SND_SOC_DAIFMT_CBM_CFS:
1094                 aif1 |= WM8993_BCLK_DIR;
1095                 wm8993->master = 1;
1096                 break;
1097         case SND_SOC_DAIFMT_CBM_CFM:
1098                 aif1 |= WM8993_BCLK_DIR;
1099                 aif4 |= WM8993_LRCLK_DIR;
1100                 wm8993->master = 1;
1101                 break;
1102         default:
1103                 return -EINVAL;
1104         }
1105
1106         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1107         case SND_SOC_DAIFMT_DSP_B:
1108                 aif1 |= WM8993_AIF_LRCLK_INV;
1109         case SND_SOC_DAIFMT_DSP_A:
1110                 aif1 |= 0x18;
1111                 break;
1112         case SND_SOC_DAIFMT_I2S:
1113                 aif1 |= 0x10;
1114                 break;
1115         case SND_SOC_DAIFMT_RIGHT_J:
1116                 break;
1117         case SND_SOC_DAIFMT_LEFT_J:
1118                 aif1 |= 0x8;
1119                 break;
1120         default:
1121                 return -EINVAL;
1122         }
1123
1124         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1125         case SND_SOC_DAIFMT_DSP_A:
1126         case SND_SOC_DAIFMT_DSP_B:
1127                 /* frame inversion not valid for DSP modes */
1128                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1129                 case SND_SOC_DAIFMT_NB_NF:
1130                         break;
1131                 case SND_SOC_DAIFMT_IB_NF:
1132                         aif1 |= WM8993_AIF_BCLK_INV;
1133                         break;
1134                 default:
1135                         return -EINVAL;
1136                 }
1137                 break;
1138
1139         case SND_SOC_DAIFMT_I2S:
1140         case SND_SOC_DAIFMT_RIGHT_J:
1141         case SND_SOC_DAIFMT_LEFT_J:
1142                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1143                 case SND_SOC_DAIFMT_NB_NF:
1144                         break;
1145                 case SND_SOC_DAIFMT_IB_IF:
1146                         aif1 |= WM8993_AIF_BCLK_INV | WM8993_AIF_LRCLK_INV;
1147                         break;
1148                 case SND_SOC_DAIFMT_IB_NF:
1149                         aif1 |= WM8993_AIF_BCLK_INV;
1150                         break;
1151                 case SND_SOC_DAIFMT_NB_IF:
1152                         aif1 |= WM8993_AIF_LRCLK_INV;
1153                         break;
1154                 default:
1155                         return -EINVAL;
1156                 }
1157                 break;
1158         default:
1159                 return -EINVAL;
1160         }
1161
1162         wm8993_write(codec, WM8993_AUDIO_INTERFACE_1, aif1);
1163         wm8993_write(codec, WM8993_AUDIO_INTERFACE_4, aif4);
1164
1165         return 0;
1166 }
1167
1168 static int wm8993_hw_params(struct snd_pcm_substream *substream,
1169                             struct snd_pcm_hw_params *params,
1170                             struct snd_soc_dai *dai)
1171 {
1172         struct snd_soc_codec *codec = dai->codec;
1173         struct wm8993_priv *wm8993 = codec->private_data;
1174         int ret, i, best, best_val, cur_val;
1175         unsigned int clocking1, clocking3, aif1, aif4;
1176
1177         clocking1 = wm8993_read(codec, WM8993_CLOCKING_1);
1178         clocking1 &= ~WM8993_BCLK_DIV_MASK;
1179
1180         clocking3 = wm8993_read(codec, WM8993_CLOCKING_3);
1181         clocking3 &= ~(WM8993_CLK_SYS_RATE_MASK | WM8993_SAMPLE_RATE_MASK);
1182
1183         aif1 = wm8993_read(codec, WM8993_AUDIO_INTERFACE_1);
1184         aif1 &= ~WM8993_AIF_WL_MASK;
1185
1186         aif4 = wm8993_read(codec, WM8993_AUDIO_INTERFACE_4);
1187         aif4 &= ~WM8993_LRCLK_RATE_MASK;
1188
1189         /* What BCLK do we need? */
1190         wm8993->fs = params_rate(params);
1191         wm8993->bclk = 2 * wm8993->fs;
1192         if (wm8993->tdm_slots) {
1193                 dev_dbg(codec->dev, "Configuring for %d %d bit TDM slots\n",
1194                         wm8993->tdm_slots, wm8993->tdm_width);
1195                 wm8993->bclk *= wm8993->tdm_width * wm8993->tdm_slots;
1196         } else {
1197                 switch (params_format(params)) {
1198                 case SNDRV_PCM_FORMAT_S16_LE:
1199                         wm8993->bclk *= 16;
1200                         break;
1201                 case SNDRV_PCM_FORMAT_S20_3LE:
1202                         wm8993->bclk *= 20;
1203                         aif1 |= 0x8;
1204                         break;
1205                 case SNDRV_PCM_FORMAT_S24_LE:
1206                         wm8993->bclk *= 24;
1207                         aif1 |= 0x10;
1208                         break;
1209                 case SNDRV_PCM_FORMAT_S32_LE:
1210                         wm8993->bclk *= 32;
1211                         aif1 |= 0x18;
1212                         break;
1213                 default:
1214                         return -EINVAL;
1215                 }
1216         }
1217
1218         dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm8993->bclk);
1219
1220         ret = configure_clock(codec);
1221         if (ret != 0)
1222                 return ret;
1223
1224         /* Select nearest CLK_SYS_RATE */
1225         best = 0;
1226         best_val = abs((wm8993->sysclk_rate / clk_sys_rates[0].ratio)
1227                        - wm8993->fs);
1228         for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
1229                 cur_val = abs((wm8993->sysclk_rate /
1230                                clk_sys_rates[i].ratio) - wm8993->fs);;
1231                 if (cur_val < best_val) {
1232                         best = i;
1233                         best_val = cur_val;
1234                 }
1235         }
1236         dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n",
1237                 clk_sys_rates[best].ratio);
1238         clocking3 |= (clk_sys_rates[best].clk_sys_rate
1239                       << WM8993_CLK_SYS_RATE_SHIFT);
1240
1241         /* SAMPLE_RATE */
1242         best = 0;
1243         best_val = abs(wm8993->fs - sample_rates[0].rate);
1244         for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1245                 /* Closest match */
1246                 cur_val = abs(wm8993->fs - sample_rates[i].rate);
1247                 if (cur_val < best_val) {
1248                         best = i;
1249                         best_val = cur_val;
1250                 }
1251         }
1252         dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n",
1253                 sample_rates[best].rate);
1254         clocking3 |= (sample_rates[best].sample_rate
1255                       << WM8993_SAMPLE_RATE_SHIFT);
1256
1257         /* BCLK_DIV */
1258         best = 0;
1259         best_val = INT_MAX;
1260         for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
1261                 cur_val = ((wm8993->sysclk_rate * 10) / bclk_divs[i].div)
1262                         - wm8993->bclk;
1263                 if (cur_val < 0) /* Table is sorted */
1264                         break;
1265                 if (cur_val < best_val) {
1266                         best = i;
1267                         best_val = cur_val;
1268                 }
1269         }
1270         wm8993->bclk = (wm8993->sysclk_rate * 10) / bclk_divs[best].div;
1271         dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
1272                 bclk_divs[best].div, wm8993->bclk);
1273         clocking1 |= bclk_divs[best].bclk_div << WM8993_BCLK_DIV_SHIFT;
1274
1275         /* LRCLK is a simple fraction of BCLK */
1276         dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm8993->bclk / wm8993->fs);
1277         aif4 |= wm8993->bclk / wm8993->fs;
1278
1279         wm8993_write(codec, WM8993_CLOCKING_1, clocking1);
1280         wm8993_write(codec, WM8993_CLOCKING_3, clocking3);
1281         wm8993_write(codec, WM8993_AUDIO_INTERFACE_1, aif1);
1282         wm8993_write(codec, WM8993_AUDIO_INTERFACE_4, aif4);
1283
1284         /* ReTune Mobile? */
1285         if (wm8993->pdata.num_retune_configs) {
1286                 u16 eq1 = wm8993_read(codec, WM8993_EQ1);
1287                 struct wm8993_retune_mobile_setting *s;
1288
1289                 best = 0;
1290                 best_val = abs(wm8993->pdata.retune_configs[0].rate
1291                                - wm8993->fs);
1292                 for (i = 0; i < wm8993->pdata.num_retune_configs; i++) {
1293                         cur_val = abs(wm8993->pdata.retune_configs[i].rate
1294                                       - wm8993->fs);
1295                         if (cur_val < best_val) {
1296                                 best_val = cur_val;
1297                                 best = i;
1298                         }
1299                 }
1300                 s = &wm8993->pdata.retune_configs[best];
1301
1302                 dev_dbg(codec->dev, "ReTune Mobile %s tuned for %dHz\n",
1303                         s->name, s->rate);
1304
1305                 /* Disable EQ while we reconfigure */
1306                 snd_soc_update_bits(codec, WM8993_EQ1, WM8993_EQ_ENA, 0);
1307
1308                 for (i = 1; i < ARRAY_SIZE(s->config); i++)
1309                         wm8993_write(codec, WM8993_EQ1 + i, s->config[i]);
1310
1311                 snd_soc_update_bits(codec, WM8993_EQ1, WM8993_EQ_ENA, eq1);
1312         }
1313
1314         return 0;
1315 }
1316
1317 static int wm8993_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1318 {
1319         struct snd_soc_codec *codec = codec_dai->codec;
1320         unsigned int reg;
1321
1322         reg = wm8993_read(codec, WM8993_DAC_CTRL);
1323
1324         if (mute)
1325                 reg |= WM8993_DAC_MUTE;
1326         else
1327                 reg &= ~WM8993_DAC_MUTE;
1328
1329         wm8993_write(codec, WM8993_DAC_CTRL, reg);
1330
1331         return 0;
1332 }
1333
1334 static int wm8993_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
1335                                unsigned int rx_mask, int slots, int slot_width)
1336 {
1337         struct snd_soc_codec *codec = dai->codec;
1338         struct wm8993_priv *wm8993 = codec->private_data;
1339         int aif1 = 0;
1340         int aif2 = 0;
1341
1342         /* Don't need to validate anything if we're turning off TDM */
1343         if (slots == 0) {
1344                 wm8993->tdm_slots = 0;
1345                 goto out;
1346         }
1347
1348         /* Note that we allow configurations we can't handle ourselves -
1349          * for example, we can generate clocks for slots 2 and up even if
1350          * we can't use those slots ourselves.
1351          */
1352         aif1 |= WM8993_AIFADC_TDM;
1353         aif2 |= WM8993_AIFDAC_TDM;
1354
1355         switch (rx_mask) {
1356         case 3:
1357                 break;
1358         case 0xc:
1359                 aif1 |= WM8993_AIFADC_TDM_CHAN;
1360                 break;
1361         default:
1362                 return -EINVAL;
1363         }
1364
1365
1366         switch (tx_mask) {
1367         case 3:
1368                 break;
1369         case 0xc:
1370                 aif2 |= WM8993_AIFDAC_TDM_CHAN;
1371                 break;
1372         default:
1373                 return -EINVAL;
1374         }
1375
1376 out:
1377         wm8993->tdm_width = slot_width;
1378         wm8993->tdm_slots = slots / 2;
1379
1380         snd_soc_update_bits(codec, WM8993_AUDIO_INTERFACE_1,
1381                             WM8993_AIFADC_TDM | WM8993_AIFADC_TDM_CHAN, aif1);
1382         snd_soc_update_bits(codec, WM8993_AUDIO_INTERFACE_2,
1383                             WM8993_AIFDAC_TDM | WM8993_AIFDAC_TDM_CHAN, aif2);
1384
1385         return 0;
1386 }
1387
1388 static struct snd_soc_dai_ops wm8993_ops = {
1389         .set_sysclk = wm8993_set_sysclk,
1390         .set_fmt = wm8993_set_dai_fmt,
1391         .hw_params = wm8993_hw_params,
1392         .digital_mute = wm8993_digital_mute,
1393         .set_pll = wm8993_set_fll,
1394         .set_tdm_slot = wm8993_set_tdm_slot,
1395 };
1396
1397 #define WM8993_RATES SNDRV_PCM_RATE_8000_48000
1398
1399 #define WM8993_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
1400                         SNDRV_PCM_FMTBIT_S20_3LE |\
1401                         SNDRV_PCM_FMTBIT_S24_LE |\
1402                         SNDRV_PCM_FMTBIT_S32_LE)
1403
1404 struct snd_soc_dai wm8993_dai = {
1405         .name = "WM8993",
1406         .playback = {
1407                 .stream_name = "Playback",
1408                 .channels_min = 1,
1409                 .channels_max = 2,
1410                 .rates = WM8993_RATES,
1411                 .formats = WM8993_FORMATS,
1412         },
1413         .capture = {
1414                  .stream_name = "Capture",
1415                  .channels_min = 1,
1416                  .channels_max = 2,
1417                  .rates = WM8993_RATES,
1418                  .formats = WM8993_FORMATS,
1419          },
1420         .ops = &wm8993_ops,
1421         .symmetric_rates = 1,
1422 };
1423 EXPORT_SYMBOL_GPL(wm8993_dai);
1424
1425 static struct snd_soc_codec *wm8993_codec;
1426
1427 static int wm8993_probe(struct platform_device *pdev)
1428 {
1429         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1430         struct snd_soc_codec *codec;
1431         struct wm8993_priv *wm8993;
1432         int ret = 0;
1433
1434         if (!wm8993_codec) {
1435                 dev_err(&pdev->dev, "I2C device not yet probed\n");
1436                 goto err;
1437         }
1438
1439         socdev->card->codec = wm8993_codec;
1440         codec = wm8993_codec;
1441         wm8993 = codec->private_data;
1442
1443         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1444         if (ret < 0) {
1445                 dev_err(codec->dev, "failed to create pcms\n");
1446                 goto err;
1447         }
1448
1449         snd_soc_add_controls(codec, wm8993_snd_controls,
1450                              ARRAY_SIZE(wm8993_snd_controls));
1451         if (wm8993->pdata.num_retune_configs != 0) {
1452                 dev_dbg(codec->dev, "Using ReTune Mobile\n");
1453         } else {
1454                 dev_dbg(codec->dev, "No ReTune Mobile, using normal EQ\n");
1455                 snd_soc_add_controls(codec, wm8993_eq_controls,
1456                                      ARRAY_SIZE(wm8993_eq_controls));
1457         }
1458
1459         snd_soc_dapm_new_controls(codec, wm8993_dapm_widgets,
1460                                   ARRAY_SIZE(wm8993_dapm_widgets));
1461         wm_hubs_add_analogue_controls(codec);
1462
1463         snd_soc_dapm_add_routes(codec, routes, ARRAY_SIZE(routes));
1464         wm_hubs_add_analogue_routes(codec, wm8993->pdata.lineout1_diff,
1465                                     wm8993->pdata.lineout2_diff);
1466
1467         snd_soc_dapm_new_widgets(codec);
1468
1469         ret = snd_soc_init_card(socdev);
1470         if (ret < 0) {
1471                 dev_err(codec->dev, "failed to register card\n");
1472                 goto card_err;
1473         }
1474
1475         return ret;
1476
1477 card_err:
1478         snd_soc_free_pcms(socdev);
1479         snd_soc_dapm_free(socdev);
1480 err:
1481         return ret;
1482 }
1483
1484 static int wm8993_remove(struct platform_device *pdev)
1485 {
1486         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1487
1488         snd_soc_free_pcms(socdev);
1489         snd_soc_dapm_free(socdev);
1490
1491         return 0;
1492 }
1493
1494 struct snd_soc_codec_device soc_codec_dev_wm8993 = {
1495         .probe =        wm8993_probe,
1496         .remove =       wm8993_remove,
1497 };
1498 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8993);
1499
1500 static int wm8993_i2c_probe(struct i2c_client *i2c,
1501                             const struct i2c_device_id *id)
1502 {
1503         struct wm8993_priv *wm8993;
1504         struct snd_soc_codec *codec;
1505         unsigned int val;
1506         int ret;
1507
1508         if (wm8993_codec) {
1509                 dev_err(&i2c->dev, "A WM8993 is already registered\n");
1510                 return -EINVAL;
1511         }
1512
1513         wm8993 = kzalloc(sizeof(struct wm8993_priv), GFP_KERNEL);
1514         if (wm8993 == NULL)
1515                 return -ENOMEM;
1516
1517         codec = &wm8993->codec;
1518         if (i2c->dev.platform_data)
1519                 memcpy(&wm8993->pdata, i2c->dev.platform_data,
1520                        sizeof(wm8993->pdata));
1521
1522         mutex_init(&codec->mutex);
1523         INIT_LIST_HEAD(&codec->dapm_widgets);
1524         INIT_LIST_HEAD(&codec->dapm_paths);
1525
1526         codec->name = "WM8993";
1527         codec->read = wm8993_read;
1528         codec->write = wm8993_write;
1529         codec->hw_write = (hw_write_t)i2c_master_send;
1530         codec->reg_cache = wm8993->reg_cache;
1531         codec->reg_cache_size = ARRAY_SIZE(wm8993->reg_cache);
1532         codec->bias_level = SND_SOC_BIAS_OFF;
1533         codec->set_bias_level = wm8993_set_bias_level;
1534         codec->dai = &wm8993_dai;
1535         codec->num_dai = 1;
1536         codec->private_data = wm8993;
1537
1538         memcpy(wm8993->reg_cache, wm8993_reg_defaults,
1539                sizeof(wm8993->reg_cache));
1540
1541         i2c_set_clientdata(i2c, wm8993);
1542         codec->control_data = i2c;
1543         wm8993_codec = codec;
1544
1545         codec->dev = &i2c->dev;
1546
1547         val = wm8993_read_hw(codec, WM8993_SOFTWARE_RESET);
1548         if (val != wm8993_reg_defaults[WM8993_SOFTWARE_RESET]) {
1549                 dev_err(codec->dev, "Invalid ID register value %x\n", val);
1550                 ret = -EINVAL;
1551                 goto err;
1552         }
1553
1554         ret = wm8993_write(codec, WM8993_SOFTWARE_RESET, 0xffff);
1555         if (ret != 0)
1556                 goto err;
1557
1558         /* By default we're using the output mixers */
1559         wm8993->class_w_users = 2;
1560
1561         /* Latch volume update bits and default ZC on */
1562         snd_soc_update_bits(codec, WM8993_RIGHT_DAC_DIGITAL_VOLUME,
1563                             WM8993_DAC_VU, WM8993_DAC_VU);
1564         snd_soc_update_bits(codec, WM8993_RIGHT_ADC_DIGITAL_VOLUME,
1565                             WM8993_ADC_VU, WM8993_ADC_VU);
1566
1567         /* Manualy manage the HPOUT sequencing for independent stereo
1568          * control. */
1569         snd_soc_update_bits(codec, WM8993_ANALOGUE_HP_0,
1570                             WM8993_HPOUT1_AUTO_PU, 0);
1571
1572         /* Use automatic clock configuration */
1573         snd_soc_update_bits(codec, WM8993_CLOCKING_4, WM8993_SR_MODE, 0);
1574
1575         if (!wm8993->pdata.lineout1_diff)
1576                 snd_soc_update_bits(codec, WM8993_LINE_MIXER1,
1577                                     WM8993_LINEOUT1_MODE,
1578                                     WM8993_LINEOUT1_MODE);
1579         if (!wm8993->pdata.lineout2_diff)
1580                 snd_soc_update_bits(codec, WM8993_LINE_MIXER2,
1581                                     WM8993_LINEOUT2_MODE,
1582                                     WM8993_LINEOUT2_MODE);
1583
1584         if (wm8993->pdata.lineout1fb)
1585                 snd_soc_update_bits(codec, WM8993_ADDITIONAL_CONTROL,
1586                                     WM8993_LINEOUT1_FB, WM8993_LINEOUT1_FB);
1587
1588         if (wm8993->pdata.lineout2fb)
1589                 snd_soc_update_bits(codec, WM8993_ADDITIONAL_CONTROL,
1590                                     WM8993_LINEOUT2_FB, WM8993_LINEOUT2_FB);
1591
1592         /* Apply the microphone bias/detection configuration - the
1593          * platform data is directly applicable to the register. */
1594         snd_soc_update_bits(codec, WM8993_MICBIAS,
1595                             WM8993_JD_SCTHR_MASK | WM8993_JD_THR_MASK |
1596                             WM8993_MICB1_LVL | WM8993_MICB2_LVL,
1597                             wm8993->pdata.jd_scthr << WM8993_JD_SCTHR_SHIFT |
1598                             wm8993->pdata.jd_thr << WM8993_JD_THR_SHIFT |
1599                             wm8993->pdata.micbias1_lvl |
1600                             wm8993->pdata.micbias1_lvl << 1);
1601
1602         ret = wm8993_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1603         if (ret != 0)
1604                 goto err;
1605
1606         wm8993_dai.dev = codec->dev;
1607
1608         ret = snd_soc_register_dai(&wm8993_dai);
1609         if (ret != 0)
1610                 goto err_bias;
1611
1612         ret = snd_soc_register_codec(codec);
1613
1614         return 0;
1615
1616 err_bias:
1617         wm8993_set_bias_level(codec, SND_SOC_BIAS_OFF);
1618 err:
1619         wm8993_codec = NULL;
1620         kfree(wm8993);
1621         return ret;
1622 }
1623
1624 static int wm8993_i2c_remove(struct i2c_client *client)
1625 {
1626         struct wm8993_priv *wm8993 = i2c_get_clientdata(client);
1627
1628         snd_soc_unregister_codec(&wm8993->codec);
1629         snd_soc_unregister_dai(&wm8993_dai);
1630
1631         wm8993_set_bias_level(&wm8993->codec, SND_SOC_BIAS_OFF);
1632         kfree(wm8993);
1633
1634         return 0;
1635 }
1636
1637 static const struct i2c_device_id wm8993_i2c_id[] = {
1638         { "wm8993", 0 },
1639         { }
1640 };
1641 MODULE_DEVICE_TABLE(i2c, wm8993_i2c_id);
1642
1643 static struct i2c_driver wm8993_i2c_driver = {
1644         .driver = {
1645                 .name = "WM8993",
1646                 .owner = THIS_MODULE,
1647         },
1648         .probe = wm8993_i2c_probe,
1649         .remove = wm8993_i2c_remove,
1650         .id_table = wm8993_i2c_id,
1651 };
1652
1653
1654 static int __init wm8993_modinit(void)
1655 {
1656         int ret;
1657
1658         ret = i2c_add_driver(&wm8993_i2c_driver);
1659         if (ret != 0)
1660                 pr_err("WM8993: Unable to register I2C driver: %d\n", ret);
1661
1662         return ret;
1663 }
1664 module_init(wm8993_modinit);
1665
1666 static void __exit wm8993_exit(void)
1667 {
1668         i2c_del_driver(&wm8993_i2c_driver);
1669 }
1670 module_exit(wm8993_exit);
1671
1672
1673 MODULE_DESCRIPTION("ASoC WM8993 driver");
1674 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1675 MODULE_LICENSE("GPL");