sound/soc/codecs/wm8960.c

   1 /*
   2  * wm8960.c  --  WM8960 ALSA SoC Audio driver
   3  *
   4  * Copyright 2007-11 Wolfson Microelectronics, plc
   5  *
   6  * Author: Liam Girdwood
   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/slab.h>
  20 #include <sound/core.h>
  21 #include <sound/pcm.h>
  22 #include <sound/pcm_params.h>
  23 #include <sound/soc.h>
  24 #include <sound/initval.h>
  25 #include <sound/tlv.h>
  26 #include <sound/wm8960.h>
  27
  28 #include "wm8960.h"
  29
  30 /* R25 - Power 1 */
  31 #define WM8960_VMID_MASK 0x180
  32 #define WM8960_VREF      0x40
  33
  34 /* R26 - Power 2 */
  35 #define WM8960_PWR2_LOUT1       0x40
  36 #define WM8960_PWR2_ROUT1       0x20
  37 #define WM8960_PWR2_OUT3        0x02
  38
  39 /* R28 - Anti-pop 1 */
  40 #define WM8960_POBCTRL   0x80
  41 #define WM8960_BUFDCOPEN 0x10
  42 #define WM8960_BUFIOEN   0x08
  43 #define WM8960_SOFT_ST   0x04
  44 #define WM8960_HPSTBY    0x01
  45
  46 /* R29 - Anti-pop 2 */
  47 #define WM8960_DISOP     0x40
  48 #define WM8960_DRES_MASK 0x30
  49
  50 /*
  51  * wm8960 register cache
  52  * We can't read the WM8960 register space when we are
  53  * using 2 wire for device control, so we cache them instead.
  54  */
  55 static const struct reg_default wm8960_reg_defaults[] = {
  56         {  0x0, 0x00a7 },
  57         {  0x1, 0x00a7 },
  58         {  0x2, 0x0000 },
  59         {  0x3, 0x0000 },
  60         {  0x4, 0x0000 },
  61         {  0x5, 0x0008 },
  62         {  0x6, 0x0000 },
  63         {  0x7, 0x000a },
  64         {  0x8, 0x01c0 },
  65         {  0x9, 0x0000 },
  66         {  0xa, 0x00ff },
  67         {  0xb, 0x00ff },
  68
  69         { 0x10, 0x0000 },
  70         { 0x11, 0x007b },
  71         { 0x12, 0x0100 },
  72         { 0x13, 0x0032 },
  73         { 0x14, 0x0000 },
  74         { 0x15, 0x00c3 },
  75         { 0x16, 0x00c3 },
  76         { 0x17, 0x01c0 },
  77         { 0x18, 0x0000 },
  78         { 0x19, 0x0000 },
  79         { 0x1a, 0x0000 },
  80         { 0x1b, 0x0000 },
  81         { 0x1c, 0x0000 },
  82         { 0x1d, 0x0000 },
  83
  84         { 0x20, 0x0100 },
  85         { 0x21, 0x0100 },
  86         { 0x22, 0x0050 },
  87
  88         { 0x25, 0x0050 },
  89         { 0x26, 0x0000 },
  90         { 0x27, 0x0000 },
  91         { 0x28, 0x0000 },
  92         { 0x29, 0x0000 },
  93         { 0x2a, 0x0040 },
  94         { 0x2b, 0x0000 },
  95         { 0x2c, 0x0000 },
  96         { 0x2d, 0x0050 },
  97         { 0x2e, 0x0050 },
  98         { 0x2f, 0x0000 },
  99         { 0x30, 0x0002 },
 100         { 0x31, 0x0037 },
 101
 102         { 0x33, 0x0080 },
 103         { 0x34, 0x0008 },
 104         { 0x35, 0x0031 },
 105         { 0x36, 0x0026 },
 106         { 0x37, 0x00e9 },
 107 };
 108
 109 static bool wm8960_volatile(struct device *dev, unsigned int reg)
 110 {
 111         switch (reg) {
 112         case WM8960_RESET:
 113                 return true;
 114         default:
 115                 return false;
 116         }
 117 }
 118
 119 struct wm8960_priv {
 120         struct regmap *regmap;
 121         int (*set_bias_level)(struct snd_soc_codec *,
 122                               enum snd_soc_bias_level level);
 123         struct snd_soc_dapm_widget *lout1;
 124         struct snd_soc_dapm_widget *rout1;
 125         struct snd_soc_dapm_widget *out3;
 126         bool deemph;
 127         int playback_fs;
 128 };
 129
 130 #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
 131
 132 /* enumerated controls */
 133 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
 134         "Right Inverted", "Stereo Inversion"};
 135 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
 136 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
 137 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
 138 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
 139
 140 static const struct soc_enum wm8960_enum[] = {
 141         SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
 142         SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
 143         SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
 144         SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
 145         SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
 146         SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
 147 };
 148
 149 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
 150
 151 static int wm8960_set_deemph(struct snd_soc_codec *codec)
 152 {
 153         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 154         int val, i, best;
 155
 156         /* If we're using deemphasis select the nearest available sample
 157          * rate.
 158          */
 159         if (wm8960->deemph) {
 160                 best = 1;
 161                 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
 162                         if (abs(deemph_settings[i] - wm8960->playback_fs) <
 163                             abs(deemph_settings[best] - wm8960->playback_fs))
 164                                 best = i;
 165                 }
 166
 167                 val = best << 1;
 168         } else {
 169                 val = 0;
 170         }
 171
 172         dev_dbg(codec->dev, "Set deemphasis %d\n", val);
 173
 174         return snd_soc_update_bits(codec, WM8960_DACCTL1,
 175                                    0x6, val);
 176 }
 177
 178 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
 179                              struct snd_ctl_elem_value *ucontrol)
 180 {
 181         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 182         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 183
 184         ucontrol->value.enumerated.item[0] = wm8960->deemph;
 185         return 0;
 186 }
 187
 188 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
 189                              struct snd_ctl_elem_value *ucontrol)
 190 {
 191         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 192         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 193         int deemph = ucontrol->value.enumerated.item[0];
 194
 195         if (deemph > 1)
 196                 return -EINVAL;
 197
 198         wm8960->deemph = deemph;
 199
 200         return wm8960_set_deemph(codec);
 201 }
 202
 203 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
 204 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
 205 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
 206 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
 207 static const DECLARE_TLV_DB_SCALE(boost_tlv, -1200, 300, 1);
 208
 209 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
 210 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
 211                  0, 63, 0, adc_tlv),
 212 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
 213         6, 1, 0),
 214 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
 215         7, 1, 0),
 216
 217 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT3 Volume",
 218                WM8960_INBMIX1, 4, 7, 0, boost_tlv),
 219 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT2 Volume",
 220                WM8960_INBMIX1, 1, 7, 0, boost_tlv),
 221 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT3 Volume",
 222                WM8960_INBMIX2, 4, 7, 0, boost_tlv),
 223 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT2 Volume",
 224                WM8960_INBMIX2, 1, 7, 0, boost_tlv),
 225
 226 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
 227                  0, 255, 0, dac_tlv),
 228
 229 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
 230                  0, 127, 0, out_tlv),
 231 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
 232         7, 1, 0),
 233
 234 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
 235                  0, 127, 0, out_tlv),
 236 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
 237         7, 1, 0),
 238 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
 239 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
 240
 241 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
 242 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
 243 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
 244
 245 SOC_ENUM("DAC Polarity", wm8960_enum[2]),
 246 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
 247                     wm8960_get_deemph, wm8960_put_deemph),
 248
 249 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
 250 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
 251 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
 252 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
 253
 254 SOC_ENUM("ALC Function", wm8960_enum[4]),
 255 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
 256 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
 257 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
 258 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
 259 SOC_ENUM("ALC Mode", wm8960_enum[5]),
 260 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
 261 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
 262
 263 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
 264 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
 265
 266 SOC_DOUBLE_R_TLV("ADC PCM Capture Volume", WM8960_LADC, WM8960_RADC,
 267         0, 255, 0, adc_tlv),
 268
 269 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
 270                WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
 271 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
 272                WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
 273 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
 274                WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
 275 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
 276                WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
 277 };
 278
 279 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
 280 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
 281 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
 282 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
 283 };
 284
 285 static const struct snd_kcontrol_new wm8960_lin[] = {
 286 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
 287 };
 288
 289 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
 290 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
 291 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
 292 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
 293 };
 294
 295 static const struct snd_kcontrol_new wm8960_rin[] = {
 296 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
 297 };
 298
 299 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
 300 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
 301 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
 302 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
 303 };
 304
 305 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
 306 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
 307 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
 308 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
 309 };
 310
 311 static const struct snd_kcontrol_new wm8960_mono_out[] = {
 312 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
 313 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
 314 };
 315
 316 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
 317 SND_SOC_DAPM_INPUT("LINPUT1"),
 318 SND_SOC_DAPM_INPUT("RINPUT1"),
 319 SND_SOC_DAPM_INPUT("LINPUT2"),
 320 SND_SOC_DAPM_INPUT("RINPUT2"),
 321 SND_SOC_DAPM_INPUT("LINPUT3"),
 322 SND_SOC_DAPM_INPUT("RINPUT3"),
 323
 324 SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0),
 325
 326 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
 327                    wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
 328 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
 329                    wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
 330
 331 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
 332                    wm8960_lin, ARRAY_SIZE(wm8960_lin)),
 333 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
 334                    wm8960_rin, ARRAY_SIZE(wm8960_rin)),
 335
 336 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER1, 3, 0),
 337 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER1, 2, 0),
 338
 339 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
 340 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
 341
 342 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
 343         &wm8960_loutput_mixer[0],
 344         ARRAY_SIZE(wm8960_loutput_mixer)),
 345 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
 346         &wm8960_routput_mixer[0],
 347         ARRAY_SIZE(wm8960_routput_mixer)),
 348
 349 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
 350 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
 351
 352 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
 353 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
 354
 355 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
 356 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
 357
 358 SND_SOC_DAPM_OUTPUT("SPK_LP"),
 359 SND_SOC_DAPM_OUTPUT("SPK_LN"),
 360 SND_SOC_DAPM_OUTPUT("HP_L"),
 361 SND_SOC_DAPM_OUTPUT("HP_R"),
 362 SND_SOC_DAPM_OUTPUT("SPK_RP"),
 363 SND_SOC_DAPM_OUTPUT("SPK_RN"),
 364 SND_SOC_DAPM_OUTPUT("OUT3"),
 365 };
 366
 367 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
 368 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
 369         &wm8960_mono_out[0],
 370         ARRAY_SIZE(wm8960_mono_out)),
 371 };
 372
 373 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
 374 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
 375 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
 376 };
 377
 378 static const struct snd_soc_dapm_route audio_paths[] = {
 379         { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
 380         { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
 381         { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
 382
 383         { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
 384         { "Left Input Mixer", NULL, "LINPUT1", },  /* Really Boost Switch */
 385         { "Left Input Mixer", NULL, "LINPUT2" },
 386         { "Left Input Mixer", NULL, "LINPUT3" },
 387
 388         { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
 389         { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
 390         { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
 391
 392         { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
 393         { "Right Input Mixer", NULL, "RINPUT1", },  /* Really Boost Switch */
 394         { "Right Input Mixer", NULL, "RINPUT2" },
 395         { "Right Input Mixer", NULL, "LINPUT3" },
 396
 397         { "Left ADC", NULL, "Left Input Mixer" },
 398         { "Right ADC", NULL, "Right Input Mixer" },
 399
 400         { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
 401         { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
 402         { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
 403
 404         { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
 405         { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
 406         { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
 407
 408         { "LOUT1 PGA", NULL, "Left Output Mixer" },
 409         { "ROUT1 PGA", NULL, "Right Output Mixer" },
 410
 411         { "HP_L", NULL, "LOUT1 PGA" },
 412         { "HP_R", NULL, "ROUT1 PGA" },
 413
 414         { "Left Speaker PGA", NULL, "Left Output Mixer" },
 415         { "Right Speaker PGA", NULL, "Right Output Mixer" },
 416
 417         { "Left Speaker Output", NULL, "Left Speaker PGA" },
 418         { "Right Speaker Output", NULL, "Right Speaker PGA" },
 419
 420         { "SPK_LN", NULL, "Left Speaker Output" },
 421         { "SPK_LP", NULL, "Left Speaker Output" },
 422         { "SPK_RN", NULL, "Right Speaker Output" },
 423         { "SPK_RP", NULL, "Right Speaker Output" },
 424 };
 425
 426 static const struct snd_soc_dapm_route audio_paths_out3[] = {
 427         { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
 428         { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
 429
 430         { "OUT3", NULL, "Mono Output Mixer", }
 431 };
 432
 433 static const struct snd_soc_dapm_route audio_paths_capless[] = {
 434         { "HP_L", NULL, "OUT3 VMID" },
 435         { "HP_R", NULL, "OUT3 VMID" },
 436
 437         { "OUT3 VMID", NULL, "Left Output Mixer" },
 438         { "OUT3 VMID", NULL, "Right Output Mixer" },
 439 };
 440
 441 static int wm8960_add_widgets(struct snd_soc_codec *codec)
 442 {
 443         struct wm8960_data *pdata = codec->dev->platform_data;
 444         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 445         struct snd_soc_dapm_context *dapm = &codec->dapm;
 446         struct snd_soc_dapm_widget *w;
 447
 448         snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets,
 449                                   ARRAY_SIZE(wm8960_dapm_widgets));
 450
 451         snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
 452
 453         /* In capless mode OUT3 is used to provide VMID for the
 454          * headphone outputs, otherwise it is used as a mono mixer.
 455          */
 456         if (pdata && pdata->capless) {
 457                 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless,
 458                                           ARRAY_SIZE(wm8960_dapm_widgets_capless));
 459
 460                 snd_soc_dapm_add_routes(dapm, audio_paths_capless,
 461                                         ARRAY_SIZE(audio_paths_capless));
 462         } else {
 463                 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3,
 464                                           ARRAY_SIZE(wm8960_dapm_widgets_out3));
 465
 466                 snd_soc_dapm_add_routes(dapm, audio_paths_out3,
 467                                         ARRAY_SIZE(audio_paths_out3));
 468         }
 469
 470         /* We need to power up the headphone output stage out of
 471          * sequence for capless mode.  To save scanning the widget
 472          * list each time to find the desired power state do so now
 473          * and save the result.
 474          */
 475         list_for_each_entry(w, &codec->card->widgets, list) {
 476                 if (w->dapm != &codec->dapm)
 477                         continue;
 478                 if (strcmp(w->name, "LOUT1 PGA") == 0)
 479                         wm8960->lout1 = w;
 480                 if (strcmp(w->name, "ROUT1 PGA") == 0)
 481                         wm8960->rout1 = w;
 482                 if (strcmp(w->name, "OUT3 VMID") == 0)
 483                         wm8960->out3 = w;
 484         }
 485
 486         return 0;
 487 }
 488
 489 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
 490                 unsigned int fmt)
 491 {
 492         struct snd_soc_codec *codec = codec_dai->codec;
 493         u16 iface = 0;
 494
 495         /* set master/slave audio interface */
 496         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 497         case SND_SOC_DAIFMT_CBM_CFM:
 498                 iface |= 0x0040;
 499                 break;
 500         case SND_SOC_DAIFMT_CBS_CFS:
 501                 break;
 502         default:
 503                 return -EINVAL;
 504         }
 505
 506         /* interface format */
 507         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 508         case SND_SOC_DAIFMT_I2S:
 509                 iface |= 0x0002;
 510                 break;
 511         case SND_SOC_DAIFMT_RIGHT_J:
 512                 break;
 513         case SND_SOC_DAIFMT_LEFT_J:
 514                 iface |= 0x0001;
 515                 break;
 516         case SND_SOC_DAIFMT_DSP_A:
 517                 iface |= 0x0003;
 518                 break;
 519         case SND_SOC_DAIFMT_DSP_B:
 520                 iface |= 0x0013;
 521                 break;
 522         default:
 523                 return -EINVAL;
 524         }
 525
 526         /* clock inversion */
 527         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 528         case SND_SOC_DAIFMT_NB_NF:
 529                 break;
 530         case SND_SOC_DAIFMT_IB_IF:
 531                 iface |= 0x0090;
 532                 break;
 533         case SND_SOC_DAIFMT_IB_NF:
 534                 iface |= 0x0080;
 535                 break;
 536         case SND_SOC_DAIFMT_NB_IF:
 537                 iface |= 0x0010;
 538                 break;
 539         default:
 540                 return -EINVAL;
 541         }
 542
 543         /* set iface */
 544         snd_soc_write(codec, WM8960_IFACE1, iface);
 545         return 0;
 546 }
 547
 548 static struct {
 549         int rate;
 550         unsigned int val;
 551 } alc_rates[] = {
 552         { 48000, 0 },
 553         { 44100, 0 },
 554         { 32000, 1 },
 555         { 22050, 2 },
 556         { 24000, 2 },
 557         { 16000, 3 },
 558         { 11250, 4 },
 559         { 12000, 4 },
 560         {  8000, 5 },
 561 };
 562
 563 static int wm8960_hw_params(struct snd_pcm_substream *substream,
 564                             struct snd_pcm_hw_params *params,
 565                             struct snd_soc_dai *dai)
 566 {
 567         struct snd_soc_codec *codec = dai->codec;
 568         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 569         u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
 570         snd_pcm_format_t format = params_format(params);
 571         int i;
 572
 573         /* bit size */
 574         switch (format) {
 575         case SNDRV_PCM_FORMAT_S16_LE:
 576         case SNDRV_PCM_FORMAT_S16_BE:
 577                 break;
 578         case SNDRV_PCM_FORMAT_S20_3LE:
 579         case SNDRV_PCM_FORMAT_S20_3BE:
 580                 iface |= 0x0004;
 581                 break;
 582         case SNDRV_PCM_FORMAT_S24_LE:
 583         case SNDRV_PCM_FORMAT_S24_BE:
 584                 iface |= 0x0008;
 585                 break;
 586         default:
 587                 dev_err(codec->dev, "unsupported format %i\n", format);
 588                 return -EINVAL;
 589         }
 590
 591         /* Update filters for the new rate */
 592         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 593                 wm8960->playback_fs = params_rate(params);
 594                 wm8960_set_deemph(codec);
 595         } else {
 596                 for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
 597                         if (alc_rates[i].rate == params_rate(params))
 598                                 snd_soc_update_bits(codec,
 599                                                     WM8960_ADDCTL3, 0x7,
 600                                                     alc_rates[i].val);
 601         }
 602
 603         /* set iface */
 604         snd_soc_write(codec, WM8960_IFACE1, iface);
 605         return 0;
 606 }
 607
 608 static int wm8960_mute(struct snd_soc_dai *dai, int mute)
 609 {
 610         struct snd_soc_codec *codec = dai->codec;
 611
 612         if (mute)
 613                 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0x8);
 614         else
 615                 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0);
 616         return 0;
 617 }
 618
 619 static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
 620                                       enum snd_soc_bias_level level)
 621 {
 622         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 623
 624         switch (level) {
 625         case SND_SOC_BIAS_ON:
 626                 break;
 627
 628         case SND_SOC_BIAS_PREPARE:
 629                 /* Set VMID to 2x50k */
 630                 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x80);
 631                 break;
 632
 633         case SND_SOC_BIAS_STANDBY:
 634                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 635                         regcache_sync(wm8960->regmap);
 636
 637                         /* Enable anti-pop features */
 638                         snd_soc_write(codec, WM8960_APOP1,
 639                                       WM8960_POBCTRL | WM8960_SOFT_ST |
 640                                       WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 641
 642                         /* Enable & ramp VMID at 2x50k */
 643                         snd_soc_update_bits(codec, WM8960_POWER1, 0x80, 0x80);
 644                         msleep(100);
 645
 646                         /* Enable VREF */
 647                         snd_soc_update_bits(codec, WM8960_POWER1, WM8960_VREF,
 648                                             WM8960_VREF);
 649
 650                         /* Disable anti-pop features */
 651                         snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
 652                 }
 653
 654                 /* Set VMID to 2x250k */
 655                 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x100);
 656                 break;
 657
 658         case SND_SOC_BIAS_OFF:
 659                 /* Enable anti-pop features */
 660                 snd_soc_write(codec, WM8960_APOP1,
 661                              WM8960_POBCTRL | WM8960_SOFT_ST |
 662                              WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 663
 664                 /* Disable VMID and VREF, let them discharge */
 665                 snd_soc_write(codec, WM8960_POWER1, 0);
 666                 msleep(600);
 667                 break;
 668         }
 669
 670         codec->dapm.bias_level = level;
 671
 672         return 0;
 673 }
 674
 675 static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
 676                                          enum snd_soc_bias_level level)
 677 {
 678         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 679         int reg;
 680
 681         switch (level) {
 682         case SND_SOC_BIAS_ON:
 683                 break;
 684
 685         case SND_SOC_BIAS_PREPARE:
 686                 switch (codec->dapm.bias_level) {
 687                 case SND_SOC_BIAS_STANDBY:
 688                         /* Enable anti pop mode */
 689                         snd_soc_update_bits(codec, WM8960_APOP1,
 690                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 691                                             WM8960_BUFDCOPEN,
 692                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 693                                             WM8960_BUFDCOPEN);
 694
 695                         /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
 696                         reg = 0;
 697                         if (wm8960->lout1 && wm8960->lout1->power)
 698                                 reg |= WM8960_PWR2_LOUT1;
 699                         if (wm8960->rout1 && wm8960->rout1->power)
 700                                 reg |= WM8960_PWR2_ROUT1;
 701                         if (wm8960->out3 && wm8960->out3->power)
 702                                 reg |= WM8960_PWR2_OUT3;
 703                         snd_soc_update_bits(codec, WM8960_POWER2,
 704                                             WM8960_PWR2_LOUT1 |
 705                                             WM8960_PWR2_ROUT1 |
 706                                             WM8960_PWR2_OUT3, reg);
 707
 708                         /* Enable VMID at 2*50k */
 709                         snd_soc_update_bits(codec, WM8960_POWER1,
 710                                             WM8960_VMID_MASK, 0x80);
 711
 712                         /* Ramp */
 713                         msleep(100);
 714
 715                         /* Enable VREF */
 716                         snd_soc_update_bits(codec, WM8960_POWER1,
 717                                             WM8960_VREF, WM8960_VREF);
 718
 719                         msleep(100);
 720                         break;
 721
 722                 case SND_SOC_BIAS_ON:
 723                         /* Enable anti-pop mode */
 724                         snd_soc_update_bits(codec, WM8960_APOP1,
 725                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 726                                             WM8960_BUFDCOPEN,
 727                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 728                                             WM8960_BUFDCOPEN);
 729
 730                         /* Disable VMID and VREF */
 731                         snd_soc_update_bits(codec, WM8960_POWER1,
 732                                             WM8960_VREF | WM8960_VMID_MASK, 0);
 733                         break;
 734
 735                 case SND_SOC_BIAS_OFF:
 736                         regcache_sync(wm8960->regmap);
 737                         break;
 738                 default:
 739                         break;
 740                 }
 741                 break;
 742
 743         case SND_SOC_BIAS_STANDBY:
 744                 switch (codec->dapm.bias_level) {
 745                 case SND_SOC_BIAS_PREPARE:
 746                         /* Disable HP discharge */
 747                         snd_soc_update_bits(codec, WM8960_APOP2,
 748                                             WM8960_DISOP | WM8960_DRES_MASK,
 749                                             0);
 750
 751                         /* Disable anti-pop features */
 752                         snd_soc_update_bits(codec, WM8960_APOP1,
 753                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 754                                             WM8960_BUFDCOPEN,
 755                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 756                                             WM8960_BUFDCOPEN);
 757                         break;
 758
 759                 default:
 760                         break;
 761                 }
 762                 break;
 763
 764         case SND_SOC_BIAS_OFF:
 765                 break;
 766         }
 767
 768         codec->dapm.bias_level = level;
 769
 770         return 0;
 771 }
 772
 773 /* PLL divisors */
 774 struct _pll_div {
 775         u32 pre_div:1;
 776         u32 n:4;
 777         u32 k:24;
 778 };
 779
 780 /* The size in bits of the pll divide multiplied by 10
 781  * to allow rounding later */
 782 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 783
 784 static int pll_factors(unsigned int source, unsigned int target,
 785                        struct _pll_div *pll_div)
 786 {
 787         unsigned long long Kpart;
 788         unsigned int K, Ndiv, Nmod;
 789
 790         pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
 791
 792         /* Scale up target to PLL operating frequency */
 793         target *= 4;
 794
 795         Ndiv = target / source;
 796         if (Ndiv < 6) {
 797                 source >>= 1;
 798                 pll_div->pre_div = 1;
 799                 Ndiv = target / source;
 800         } else
 801                 pll_div->pre_div = 0;
 802
 803         if ((Ndiv < 6) || (Ndiv > 12)) {
 804                 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
 805                 return -EINVAL;
 806         }
 807
 808         pll_div->n = Ndiv;
 809         Nmod = target % source;
 810         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 811
 812         do_div(Kpart, source);
 813
 814         K = Kpart & 0xFFFFFFFF;
 815
 816         /* Check if we need to round */
 817         if ((K % 10) >= 5)
 818                 K += 5;
 819
 820         /* Move down to proper range now rounding is done */
 821         K /= 10;
 822
 823         pll_div->k = K;
 824
 825         pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
 826                  pll_div->n, pll_div->k, pll_div->pre_div);
 827
 828         return 0;
 829 }
 830
 831 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 832                 int source, unsigned int freq_in, unsigned int freq_out)
 833 {
 834         struct snd_soc_codec *codec = codec_dai->codec;
 835         u16 reg;
 836         static struct _pll_div pll_div;
 837         int ret;
 838
 839         if (freq_in && freq_out) {
 840                 ret = pll_factors(freq_in, freq_out, &pll_div);
 841                 if (ret != 0)
 842                         return ret;
 843         }
 844
 845         /* Disable the PLL: even if we are changing the frequency the
 846          * PLL needs to be disabled while we do so. */
 847         snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0);
 848         snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0);
 849
 850         if (!freq_in || !freq_out)
 851                 return 0;
 852
 853         reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
 854         reg |= pll_div.pre_div << 4;
 855         reg |= pll_div.n;
 856
 857         if (pll_div.k) {
 858                 reg |= 0x20;
 859
 860                 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 16) & 0xff);
 861                 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 8) & 0xff);
 862                 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0xff);
 863         }
 864         snd_soc_write(codec, WM8960_PLL1, reg);
 865
 866         /* Turn it on */
 867         snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0x1);
 868         msleep(250);
 869         snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0x1);
 870
 871         return 0;
 872 }
 873
 874 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 875                 int div_id, int div)
 876 {
 877         struct snd_soc_codec *codec = codec_dai->codec;
 878         u16 reg;
 879
 880         switch (div_id) {
 881         case WM8960_SYSCLKDIV:
 882                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
 883                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 884                 break;
 885         case WM8960_DACDIV:
 886                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
 887                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 888                 break;
 889         case WM8960_OPCLKDIV:
 890                 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
 891                 snd_soc_write(codec, WM8960_PLL1, reg | div);
 892                 break;
 893         case WM8960_DCLKDIV:
 894                 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
 895                 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
 896                 break;
 897         case WM8960_TOCLKSEL:
 898                 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
 899                 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
 900                 break;
 901         default:
 902                 return -EINVAL;
 903         }
 904
 905         return 0;
 906 }
 907
 908 static int wm8960_set_bias_level(struct snd_soc_codec *codec,
 909                                  enum snd_soc_bias_level level)
 910 {
 911         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 912
 913         return wm8960->set_bias_level(codec, level);
 914 }
 915
 916 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
 917
 918 #define WM8960_FORMATS \
 919         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 920         SNDRV_PCM_FMTBIT_S24_LE)
 921
 922 static const struct snd_soc_dai_ops wm8960_dai_ops = {
 923         .hw_params = wm8960_hw_params,
 924         .digital_mute = wm8960_mute,
 925         .set_fmt = wm8960_set_dai_fmt,
 926         .set_clkdiv = wm8960_set_dai_clkdiv,
 927         .set_pll = wm8960_set_dai_pll,
 928 };
 929
 930 static struct snd_soc_dai_driver wm8960_dai = {
 931         .name = "wm8960-hifi",
 932         .playback = {
 933                 .stream_name = "Playback",
 934                 .channels_min = 1,
 935                 .channels_max = 2,
 936                 .rates = WM8960_RATES,
 937                 .formats = WM8960_FORMATS,},
 938         .capture = {
 939                 .stream_name = "Capture",
 940                 .channels_min = 1,
 941                 .channels_max = 2,
 942                 .rates = WM8960_RATES,
 943                 .formats = WM8960_FORMATS,},
 944         .ops = &wm8960_dai_ops,
 945         .symmetric_rates = 1,
 946 };
 947
 948 static int wm8960_suspend(struct snd_soc_codec *codec)
 949 {
 950         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 951
 952         wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
 953         return 0;
 954 }
 955
 956 static int wm8960_resume(struct snd_soc_codec *codec)
 957 {
 958         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 959
 960         wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 961         return 0;
 962 }
 963
 964 static int wm8960_probe(struct snd_soc_codec *codec)
 965 {
 966         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 967         struct wm8960_data *pdata = dev_get_platdata(codec->dev);
 968         int ret;
 969
 970         wm8960->set_bias_level = wm8960_set_bias_level_out3;
 971
 972         if (!pdata) {
 973                 dev_warn(codec->dev, "No platform data supplied\n");
 974         } else {
 975                 if (pdata->capless)
 976                         wm8960->set_bias_level = wm8960_set_bias_level_capless;
 977         }
 978
 979         ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
 980         if (ret < 0) {
 981                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 982                 return ret;
 983         }
 984
 985         ret = wm8960_reset(codec);
 986         if (ret < 0) {
 987                 dev_err(codec->dev, "Failed to issue reset\n");
 988                 return ret;
 989         }
 990
 991         wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 992
 993         /* Latch the update bits */
 994         snd_soc_update_bits(codec, WM8960_LINVOL, 0x100, 0x100);
 995         snd_soc_update_bits(codec, WM8960_RINVOL, 0x100, 0x100);
 996         snd_soc_update_bits(codec, WM8960_LADC, 0x100, 0x100);
 997         snd_soc_update_bits(codec, WM8960_RADC, 0x100, 0x100);
 998         snd_soc_update_bits(codec, WM8960_LDAC, 0x100, 0x100);
 999         snd_soc_update_bits(codec, WM8960_RDAC, 0x100, 0x100);
1000         snd_soc_update_bits(codec, WM8960_LOUT1, 0x100, 0x100);
1001         snd_soc_update_bits(codec, WM8960_ROUT1, 0x100, 0x100);
1002         snd_soc_update_bits(codec, WM8960_LOUT2, 0x100, 0x100);
1003         snd_soc_update_bits(codec, WM8960_ROUT2, 0x100, 0x100);
1004
1005         snd_soc_add_codec_controls(codec, wm8960_snd_controls,
1006                                      ARRAY_SIZE(wm8960_snd_controls));
1007         wm8960_add_widgets(codec);
1008
1009         return 0;
1010 }
1011
1012 /* power down chip */
1013 static int wm8960_remove(struct snd_soc_codec *codec)
1014 {
1015         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
1016
1017         wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
1018         return 0;
1019 }
1020
1021 static struct snd_soc_codec_driver soc_codec_dev_wm8960 = {
1022         .probe =        wm8960_probe,
1023         .remove =       wm8960_remove,
1024         .suspend =      wm8960_suspend,
1025         .resume =       wm8960_resume,
1026         .set_bias_level = wm8960_set_bias_level,
1027 };
1028
1029 static const struct regmap_config wm8960_regmap = {
1030         .reg_bits = 7,
1031         .val_bits = 9,
1032         .max_register = WM8960_PLL4,
1033
1034         .reg_defaults = wm8960_reg_defaults,
1035         .num_reg_defaults = ARRAY_SIZE(wm8960_reg_defaults),
1036         .cache_type = REGCACHE_RBTREE,
1037
1038         .volatile_reg = wm8960_volatile,
1039 };
1040
1041 static int wm8960_i2c_probe(struct i2c_client *i2c,
1042                             const struct i2c_device_id *id)
1043 {
1044         struct wm8960_data *pdata = dev_get_platdata(&i2c->dev);
1045         struct wm8960_priv *wm8960;
1046         int ret;
1047
1048         wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv),
1049                               GFP_KERNEL);
1050         if (wm8960 == NULL)
1051                 return -ENOMEM;
1052
1053         wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap);
1054         if (IS_ERR(wm8960->regmap))
1055                 return PTR_ERR(wm8960->regmap);
1056
1057         if (pdata && pdata->shared_lrclk) {
1058                 ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2,
1059                                          0x4, 0x4);
1060                 if (ret != 0) {
1061                         dev_err(&i2c->dev, "Failed to enable LRCM: %d\n",
1062                                 ret);
1063                         return ret;
1064                 }
1065         }
1066
1067         i2c_set_clientdata(i2c, wm8960);
1068
1069         ret = snd_soc_register_codec(&i2c->dev,
1070                         &soc_codec_dev_wm8960, &wm8960_dai, 1);
1071
1072         return ret;
1073 }
1074
1075 static int wm8960_i2c_remove(struct i2c_client *client)
1076 {
1077         snd_soc_unregister_codec(&client->dev);
1078         return 0;
1079 }
1080
1081 static const struct i2c_device_id wm8960_i2c_id[] = {
1082         { "wm8960", 0 },
1083         { }
1084 };
1085 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1086
1087 static struct i2c_driver wm8960_i2c_driver = {
1088         .driver = {
1089                 .name = "wm8960",
1090                 .owner = THIS_MODULE,
1091         },
1092         .probe =    wm8960_i2c_probe,
1093         .remove =   wm8960_i2c_remove,
1094         .id_table = wm8960_i2c_id,
1095 };
1096
1097 module_i2c_driver(wm8960_i2c_driver);
1098
1099 MODULE_DESCRIPTION("ASoC WM8960 driver");
1100 MODULE_AUTHOR("Liam Girdwood");
1101 MODULE_LICENSE("GPL");