sound/soc/codecs/wm8960.c

   1 /*
   2  * wm8960.c  --  WM8960 ALSA SoC Audio driver
   3  *
   4  * Author: Liam Girdwood
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/moduleparam.h>
  13 #include <linux/init.h>
  14 #include <linux/delay.h>
  15 #include <linux/pm.h>
  16 #include <linux/i2c.h>
  17 #include <linux/slab.h>
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/pcm_params.h>
  21 #include <sound/soc.h>
  22 #include <sound/initval.h>
  23 #include <sound/tlv.h>
  24 #include <sound/wm8960.h>
  25
  26 #include "wm8960.h"
  27
  28 #define AUDIO_NAME "wm8960"
  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 u16 wm8960_reg[WM8960_CACHEREGNUM] = {
  56         0x0097, 0x0097, 0x0000, 0x0000,
  57         0x0000, 0x0008, 0x0000, 0x000a,
  58         0x01c0, 0x0000, 0x00ff, 0x00ff,
  59         0x0000, 0x0000, 0x0000, 0x0000,
  60         0x0000, 0x007b, 0x0100, 0x0032,
  61         0x0000, 0x00c3, 0x00c3, 0x01c0,
  62         0x0000, 0x0000, 0x0000, 0x0000,
  63         0x0000, 0x0000, 0x0000, 0x0000,
  64         0x0100, 0x0100, 0x0050, 0x0050,
  65         0x0050, 0x0050, 0x0000, 0x0000,
  66         0x0000, 0x0000, 0x0040, 0x0000,
  67         0x0000, 0x0050, 0x0050, 0x0000,
  68         0x0002, 0x0037, 0x004d, 0x0080,
  69         0x0008, 0x0031, 0x0026, 0x00e9,
  70 };
  71
  72 struct wm8960_priv {
  73         enum snd_soc_control_type control_type;
  74         int (*set_bias_level)(struct snd_soc_codec *,
  75                               enum snd_soc_bias_level level);
  76         struct snd_soc_dapm_widget *lout1;
  77         struct snd_soc_dapm_widget *rout1;
  78         struct snd_soc_dapm_widget *out3;
  79         bool deemph;
  80         int playback_fs;
  81 };
  82
  83 #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
  84
  85 /* enumerated controls */
  86 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
  87         "Right Inverted", "Stereo Inversion"};
  88 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
  89 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
  90 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
  91 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
  92
  93 static const struct soc_enum wm8960_enum[] = {
  94         SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
  95         SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
  96         SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
  97         SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
  98         SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
  99         SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
 100 };
 101
 102 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
 103
 104 static int wm8960_set_deemph(struct snd_soc_codec *codec)
 105 {
 106         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 107         int val, i, best;
 108
 109         /* If we're using deemphasis select the nearest available sample
 110          * rate.
 111          */
 112         if (wm8960->deemph) {
 113                 best = 1;
 114                 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
 115                         if (abs(deemph_settings[i] - wm8960->playback_fs) <
 116                             abs(deemph_settings[best] - wm8960->playback_fs))
 117                                 best = i;
 118                 }
 119
 120                 val = best << 1;
 121         } else {
 122                 val = 0;
 123         }
 124
 125         dev_dbg(codec->dev, "Set deemphasis %d\n", val);
 126
 127         return snd_soc_update_bits(codec, WM8960_DACCTL1,
 128                                    0x6, val);
 129 }
 130
 131 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
 132                              struct snd_ctl_elem_value *ucontrol)
 133 {
 134         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 135         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 136
 137         ucontrol->value.enumerated.item[0] = wm8960->deemph;
 138         return 0;
 139 }
 140
 141 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
 142                              struct snd_ctl_elem_value *ucontrol)
 143 {
 144         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 145         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 146         int deemph = ucontrol->value.enumerated.item[0];
 147
 148         if (deemph > 1)
 149                 return -EINVAL;
 150
 151         wm8960->deemph = deemph;
 152
 153         return wm8960_set_deemph(codec);
 154 }
 155
 156 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
 157 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
 158 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
 159 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
 160
 161 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
 162 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
 163                  0, 63, 0, adc_tlv),
 164 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
 165         6, 1, 0),
 166 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
 167         7, 1, 0),
 168
 169 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
 170                  0, 255, 0, dac_tlv),
 171
 172 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
 173                  0, 127, 0, out_tlv),
 174 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
 175         7, 1, 0),
 176
 177 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
 178                  0, 127, 0, out_tlv),
 179 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
 180         7, 1, 0),
 181 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
 182 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
 183
 184 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
 185 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
 186 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
 187
 188 SOC_ENUM("DAC Polarity", wm8960_enum[2]),
 189 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
 190                     wm8960_get_deemph, wm8960_put_deemph),
 191
 192 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
 193 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
 194 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
 195 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
 196
 197 SOC_ENUM("ALC Function", wm8960_enum[4]),
 198 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
 199 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
 200 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
 201 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
 202 SOC_ENUM("ALC Mode", wm8960_enum[5]),
 203 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
 204 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
 205
 206 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
 207 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
 208
 209 SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
 210         0, 127, 0),
 211
 212 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
 213                WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
 214 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
 215                WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
 216 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
 217                WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
 218 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
 219                WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
 220 };
 221
 222 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
 223 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
 224 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
 225 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
 226 };
 227
 228 static const struct snd_kcontrol_new wm8960_lin[] = {
 229 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
 230 };
 231
 232 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
 233 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
 234 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
 235 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
 236 };
 237
 238 static const struct snd_kcontrol_new wm8960_rin[] = {
 239 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
 240 };
 241
 242 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
 243 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
 244 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
 245 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
 246 };
 247
 248 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
 249 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
 250 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
 251 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
 252 };
 253
 254 static const struct snd_kcontrol_new wm8960_mono_out[] = {
 255 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
 256 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
 257 };
 258
 259 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
 260 SND_SOC_DAPM_INPUT("LINPUT1"),
 261 SND_SOC_DAPM_INPUT("RINPUT1"),
 262 SND_SOC_DAPM_INPUT("LINPUT2"),
 263 SND_SOC_DAPM_INPUT("RINPUT2"),
 264 SND_SOC_DAPM_INPUT("LINPUT3"),
 265 SND_SOC_DAPM_INPUT("RINPUT3"),
 266
 267 SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0),
 268
 269 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
 270                    wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
 271 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
 272                    wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
 273
 274 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
 275                    wm8960_lin, ARRAY_SIZE(wm8960_lin)),
 276 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
 277                    wm8960_rin, ARRAY_SIZE(wm8960_rin)),
 278
 279 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
 280 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
 281
 282 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
 283 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
 284
 285 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
 286         &wm8960_loutput_mixer[0],
 287         ARRAY_SIZE(wm8960_loutput_mixer)),
 288 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
 289         &wm8960_routput_mixer[0],
 290         ARRAY_SIZE(wm8960_routput_mixer)),
 291
 292 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
 293 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
 294
 295 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
 296 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
 297
 298 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
 299 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
 300
 301 SND_SOC_DAPM_OUTPUT("SPK_LP"),
 302 SND_SOC_DAPM_OUTPUT("SPK_LN"),
 303 SND_SOC_DAPM_OUTPUT("HP_L"),
 304 SND_SOC_DAPM_OUTPUT("HP_R"),
 305 SND_SOC_DAPM_OUTPUT("SPK_RP"),
 306 SND_SOC_DAPM_OUTPUT("SPK_RN"),
 307 SND_SOC_DAPM_OUTPUT("OUT3"),
 308 };
 309
 310 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
 311 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
 312         &wm8960_mono_out[0],
 313         ARRAY_SIZE(wm8960_mono_out)),
 314 };
 315
 316 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
 317 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
 318 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
 319 };
 320
 321 static const struct snd_soc_dapm_route audio_paths[] = {
 322         { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
 323         { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
 324         { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
 325
 326         { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
 327         { "Left Input Mixer", NULL, "LINPUT1", },  /* Really Boost Switch */
 328         { "Left Input Mixer", NULL, "LINPUT2" },
 329         { "Left Input Mixer", NULL, "LINPUT3" },
 330
 331         { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
 332         { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
 333         { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
 334
 335         { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
 336         { "Right Input Mixer", NULL, "RINPUT1", },  /* Really Boost Switch */
 337         { "Right Input Mixer", NULL, "RINPUT2" },
 338         { "Right Input Mixer", NULL, "LINPUT3" },
 339
 340         { "Left ADC", NULL, "Left Input Mixer" },
 341         { "Right ADC", NULL, "Right Input Mixer" },
 342
 343         { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
 344         { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
 345         { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
 346
 347         { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
 348         { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
 349         { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
 350
 351         { "LOUT1 PGA", NULL, "Left Output Mixer" },
 352         { "ROUT1 PGA", NULL, "Right Output Mixer" },
 353
 354         { "HP_L", NULL, "LOUT1 PGA" },
 355         { "HP_R", NULL, "ROUT1 PGA" },
 356
 357         { "Left Speaker PGA", NULL, "Left Output Mixer" },
 358         { "Right Speaker PGA", NULL, "Right Output Mixer" },
 359
 360         { "Left Speaker Output", NULL, "Left Speaker PGA" },
 361         { "Right Speaker Output", NULL, "Right Speaker PGA" },
 362
 363         { "SPK_LN", NULL, "Left Speaker Output" },
 364         { "SPK_LP", NULL, "Left Speaker Output" },
 365         { "SPK_RN", NULL, "Right Speaker Output" },
 366         { "SPK_RP", NULL, "Right Speaker Output" },
 367 };
 368
 369 static const struct snd_soc_dapm_route audio_paths_out3[] = {
 370         { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
 371         { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
 372
 373         { "OUT3", NULL, "Mono Output Mixer", }
 374 };
 375
 376 static const struct snd_soc_dapm_route audio_paths_capless[] = {
 377         { "HP_L", NULL, "OUT3 VMID" },
 378         { "HP_R", NULL, "OUT3 VMID" },
 379
 380         { "OUT3 VMID", NULL, "Left Output Mixer" },
 381         { "OUT3 VMID", NULL, "Right Output Mixer" },
 382 };
 383
 384 static int wm8960_add_widgets(struct snd_soc_codec *codec)
 385 {
 386         struct wm8960_data *pdata = codec->dev->platform_data;
 387         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 388         struct snd_soc_dapm_context *dapm = &codec->dapm;
 389         struct snd_soc_dapm_widget *w;
 390
 391         snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets,
 392                                   ARRAY_SIZE(wm8960_dapm_widgets));
 393
 394         snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
 395
 396         /* In capless mode OUT3 is used to provide VMID for the
 397          * headphone outputs, otherwise it is used as a mono mixer.
 398          */
 399         if (pdata && pdata->capless) {
 400                 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless,
 401                                           ARRAY_SIZE(wm8960_dapm_widgets_capless));
 402
 403                 snd_soc_dapm_add_routes(dapm, audio_paths_capless,
 404                                         ARRAY_SIZE(audio_paths_capless));
 405         } else {
 406                 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3,
 407                                           ARRAY_SIZE(wm8960_dapm_widgets_out3));
 408
 409                 snd_soc_dapm_add_routes(dapm, audio_paths_out3,
 410                                         ARRAY_SIZE(audio_paths_out3));
 411         }
 412
 413         /* We need to power up the headphone output stage out of
 414          * sequence for capless mode.  To save scanning the widget
 415          * list each time to find the desired power state do so now
 416          * and save the result.
 417          */
 418         list_for_each_entry(w, &codec->card->widgets, list) {
 419                 if (w->dapm != &codec->dapm)
 420                         continue;
 421                 if (strcmp(w->name, "LOUT1 PGA") == 0)
 422                         wm8960->lout1 = w;
 423                 if (strcmp(w->name, "ROUT1 PGA") == 0)
 424                         wm8960->rout1 = w;
 425                 if (strcmp(w->name, "OUT3 VMID") == 0)
 426                         wm8960->out3 = w;
 427         }
 428
 429         return 0;
 430 }
 431
 432 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
 433                 unsigned int fmt)
 434 {
 435         struct snd_soc_codec *codec = codec_dai->codec;
 436         u16 iface = 0;
 437
 438         /* set master/slave audio interface */
 439         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 440         case SND_SOC_DAIFMT_CBM_CFM:
 441                 iface |= 0x0040;
 442                 break;
 443         case SND_SOC_DAIFMT_CBS_CFS:
 444                 break;
 445         default:
 446                 return -EINVAL;
 447         }
 448
 449         /* interface format */
 450         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 451         case SND_SOC_DAIFMT_I2S:
 452                 iface |= 0x0002;
 453                 break;
 454         case SND_SOC_DAIFMT_RIGHT_J:
 455                 break;
 456         case SND_SOC_DAIFMT_LEFT_J:
 457                 iface |= 0x0001;
 458                 break;
 459         case SND_SOC_DAIFMT_DSP_A:
 460                 iface |= 0x0003;
 461                 break;
 462         case SND_SOC_DAIFMT_DSP_B:
 463                 iface |= 0x0013;
 464                 break;
 465         default:
 466                 return -EINVAL;
 467         }
 468
 469         /* clock inversion */
 470         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 471         case SND_SOC_DAIFMT_NB_NF:
 472                 break;
 473         case SND_SOC_DAIFMT_IB_IF:
 474                 iface |= 0x0090;
 475                 break;
 476         case SND_SOC_DAIFMT_IB_NF:
 477                 iface |= 0x0080;
 478                 break;
 479         case SND_SOC_DAIFMT_NB_IF:
 480                 iface |= 0x0010;
 481                 break;
 482         default:
 483                 return -EINVAL;
 484         }
 485
 486         /* set iface */
 487         snd_soc_write(codec, WM8960_IFACE1, iface);
 488         return 0;
 489 }
 490
 491 static struct {
 492         int rate;
 493         unsigned int val;
 494 } alc_rates[] = {
 495         { 48000, 0 },
 496         { 44100, 0 },
 497         { 32000, 1 },
 498         { 22050, 2 },
 499         { 24000, 2 },
 500         { 16000, 3 },
 501         { 11250, 4 },
 502         { 12000, 4 },
 503         {  8000, 5 },
 504 };
 505
 506 static int wm8960_hw_params(struct snd_pcm_substream *substream,
 507                             struct snd_pcm_hw_params *params,
 508                             struct snd_soc_dai *dai)
 509 {
 510         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 511         struct snd_soc_codec *codec = rtd->codec;
 512         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 513         u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
 514         int i;
 515
 516         /* bit size */
 517         switch (params_format(params)) {
 518         case SNDRV_PCM_FORMAT_S16_LE:
 519                 break;
 520         case SNDRV_PCM_FORMAT_S20_3LE:
 521                 iface |= 0x0004;
 522                 break;
 523         case SNDRV_PCM_FORMAT_S24_LE:
 524                 iface |= 0x0008;
 525                 break;
 526         }
 527
 528         /* Update filters for the new rate */
 529         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 530                 wm8960->playback_fs = params_rate(params);
 531                 wm8960_set_deemph(codec);
 532         } else {
 533                 for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
 534                         if (alc_rates[i].rate == params_rate(params))
 535                                 snd_soc_update_bits(codec,
 536                                                     WM8960_ADDCTL3, 0x7,
 537                                                     alc_rates[i].val);
 538         }
 539
 540         /* set iface */
 541         snd_soc_write(codec, WM8960_IFACE1, iface);
 542         return 0;
 543 }
 544
 545 static int wm8960_mute(struct snd_soc_dai *dai, int mute)
 546 {
 547         struct snd_soc_codec *codec = dai->codec;
 548         u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7;
 549
 550         if (mute)
 551                 snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8);
 552         else
 553                 snd_soc_write(codec, WM8960_DACCTL1, mute_reg);
 554         return 0;
 555 }
 556
 557 static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
 558                                       enum snd_soc_bias_level level)
 559 {
 560         u16 reg;
 561
 562         switch (level) {
 563         case SND_SOC_BIAS_ON:
 564                 break;
 565
 566         case SND_SOC_BIAS_PREPARE:
 567                 /* Set VMID to 2x50k */
 568                 reg = snd_soc_read(codec, WM8960_POWER1);
 569                 reg &= ~0x180;
 570                 reg |= 0x80;
 571                 snd_soc_write(codec, WM8960_POWER1, reg);
 572                 break;
 573
 574         case SND_SOC_BIAS_STANDBY:
 575                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 576                         snd_soc_cache_sync(codec);
 577
 578                         /* Enable anti-pop features */
 579                         snd_soc_write(codec, WM8960_APOP1,
 580                                       WM8960_POBCTRL | WM8960_SOFT_ST |
 581                                       WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 582
 583                         /* Enable & ramp VMID at 2x50k */
 584                         reg = snd_soc_read(codec, WM8960_POWER1);
 585                         reg |= 0x80;
 586                         snd_soc_write(codec, WM8960_POWER1, reg);
 587                         msleep(100);
 588
 589                         /* Enable VREF */
 590                         snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF);
 591
 592                         /* Disable anti-pop features */
 593                         snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
 594                 }
 595
 596                 /* Set VMID to 2x250k */
 597                 reg = snd_soc_read(codec, WM8960_POWER1);
 598                 reg &= ~0x180;
 599                 reg |= 0x100;
 600                 snd_soc_write(codec, WM8960_POWER1, reg);
 601                 break;
 602
 603         case SND_SOC_BIAS_OFF:
 604                 /* Enable anti-pop features */
 605                 snd_soc_write(codec, WM8960_APOP1,
 606                              WM8960_POBCTRL | WM8960_SOFT_ST |
 607                              WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 608
 609                 /* Disable VMID and VREF, let them discharge */
 610                 snd_soc_write(codec, WM8960_POWER1, 0);
 611                 msleep(600);
 612                 break;
 613         }
 614
 615         codec->dapm.bias_level = level;
 616
 617         return 0;
 618 }
 619
 620 static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
 621                                          enum snd_soc_bias_level level)
 622 {
 623         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 624         int reg;
 625
 626         switch (level) {
 627         case SND_SOC_BIAS_ON:
 628                 break;
 629
 630         case SND_SOC_BIAS_PREPARE:
 631                 switch (codec->dapm.bias_level) {
 632                 case SND_SOC_BIAS_STANDBY:
 633                         /* Enable anti pop mode */
 634                         snd_soc_update_bits(codec, WM8960_APOP1,
 635                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 636                                             WM8960_BUFDCOPEN,
 637                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 638                                             WM8960_BUFDCOPEN);
 639
 640                         /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
 641                         reg = 0;
 642                         if (wm8960->lout1 && wm8960->lout1->power)
 643                                 reg |= WM8960_PWR2_LOUT1;
 644                         if (wm8960->rout1 && wm8960->rout1->power)
 645                                 reg |= WM8960_PWR2_ROUT1;
 646                         if (wm8960->out3 && wm8960->out3->power)
 647                                 reg |= WM8960_PWR2_OUT3;
 648                         snd_soc_update_bits(codec, WM8960_POWER2,
 649                                             WM8960_PWR2_LOUT1 |
 650                                             WM8960_PWR2_ROUT1 |
 651                                             WM8960_PWR2_OUT3, reg);
 652
 653                         /* Enable VMID at 2*50k */
 654                         snd_soc_update_bits(codec, WM8960_POWER1,
 655                                             WM8960_VMID_MASK, 0x80);
 656
 657                         /* Ramp */
 658                         msleep(100);
 659
 660                         /* Enable VREF */
 661                         snd_soc_update_bits(codec, WM8960_POWER1,
 662                                             WM8960_VREF, WM8960_VREF);
 663
 664                         msleep(100);
 665                         break;
 666
 667                 case SND_SOC_BIAS_ON:
 668                         /* Enable anti-pop mode */
 669                         snd_soc_update_bits(codec, WM8960_APOP1,
 670                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 671                                             WM8960_BUFDCOPEN,
 672                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 673                                             WM8960_BUFDCOPEN);
 674
 675                         /* Disable VMID and VREF */
 676                         snd_soc_update_bits(codec, WM8960_POWER1,
 677                                             WM8960_VREF | WM8960_VMID_MASK, 0);
 678                         break;
 679
 680                 case SND_SOC_BIAS_OFF:
 681                         snd_soc_cache_sync(codec);
 682                         break;
 683                 default:
 684                         break;
 685                 }
 686                 break;
 687
 688         case SND_SOC_BIAS_STANDBY:
 689                 switch (codec->dapm.bias_level) {
 690                 case SND_SOC_BIAS_PREPARE:
 691                         /* Disable HP discharge */
 692                         snd_soc_update_bits(codec, WM8960_APOP2,
 693                                             WM8960_DISOP | WM8960_DRES_MASK,
 694                                             0);
 695
 696                         /* Disable anti-pop features */
 697                         snd_soc_update_bits(codec, WM8960_APOP1,
 698                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 699                                             WM8960_BUFDCOPEN,
 700                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 701                                             WM8960_BUFDCOPEN);
 702                         break;
 703
 704                 default:
 705                         break;
 706                 }
 707                 break;
 708
 709         case SND_SOC_BIAS_OFF:
 710                 break;
 711         }
 712
 713         codec->dapm.bias_level = level;
 714
 715         return 0;
 716 }
 717
 718 /* PLL divisors */
 719 struct _pll_div {
 720         u32 pre_div:1;
 721         u32 n:4;
 722         u32 k:24;
 723 };
 724
 725 /* The size in bits of the pll divide multiplied by 10
 726  * to allow rounding later */
 727 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 728
 729 static int pll_factors(unsigned int source, unsigned int target,
 730                        struct _pll_div *pll_div)
 731 {
 732         unsigned long long Kpart;
 733         unsigned int K, Ndiv, Nmod;
 734
 735         pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
 736
 737         /* Scale up target to PLL operating frequency */
 738         target *= 4;
 739
 740         Ndiv = target / source;
 741         if (Ndiv < 6) {
 742                 source >>= 1;
 743                 pll_div->pre_div = 1;
 744                 Ndiv = target / source;
 745         } else
 746                 pll_div->pre_div = 0;
 747
 748         if ((Ndiv < 6) || (Ndiv > 12)) {
 749                 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
 750                 return -EINVAL;
 751         }
 752
 753         pll_div->n = Ndiv;
 754         Nmod = target % source;
 755         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 756
 757         do_div(Kpart, source);
 758
 759         K = Kpart & 0xFFFFFFFF;
 760
 761         /* Check if we need to round */
 762         if ((K % 10) >= 5)
 763                 K += 5;
 764
 765         /* Move down to proper range now rounding is done */
 766         K /= 10;
 767
 768         pll_div->k = K;
 769
 770         pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
 771                  pll_div->n, pll_div->k, pll_div->pre_div);
 772
 773         return 0;
 774 }
 775
 776 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 777                 int source, unsigned int freq_in, unsigned int freq_out)
 778 {
 779         struct snd_soc_codec *codec = codec_dai->codec;
 780         u16 reg;
 781         static struct _pll_div pll_div;
 782         int ret;
 783
 784         if (freq_in && freq_out) {
 785                 ret = pll_factors(freq_in, freq_out, &pll_div);
 786                 if (ret != 0)
 787                         return ret;
 788         }
 789
 790         /* Disable the PLL: even if we are changing the frequency the
 791          * PLL needs to be disabled while we do so. */
 792         snd_soc_write(codec, WM8960_CLOCK1,
 793                      snd_soc_read(codec, WM8960_CLOCK1) & ~1);
 794         snd_soc_write(codec, WM8960_POWER2,
 795                      snd_soc_read(codec, WM8960_POWER2) & ~1);
 796
 797         if (!freq_in || !freq_out)
 798                 return 0;
 799
 800         reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
 801         reg |= pll_div.pre_div << 4;
 802         reg |= pll_div.n;
 803
 804         if (pll_div.k) {
 805                 reg |= 0x20;
 806
 807                 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
 808                 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
 809                 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
 810         }
 811         snd_soc_write(codec, WM8960_PLL1, reg);
 812
 813         /* Turn it on */
 814         snd_soc_write(codec, WM8960_POWER2,
 815                      snd_soc_read(codec, WM8960_POWER2) | 1);
 816         msleep(250);
 817         snd_soc_write(codec, WM8960_CLOCK1,
 818                      snd_soc_read(codec, WM8960_CLOCK1) | 1);
 819
 820         return 0;
 821 }
 822
 823 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 824                 int div_id, int div)
 825 {
 826         struct snd_soc_codec *codec = codec_dai->codec;
 827         u16 reg;
 828
 829         switch (div_id) {
 830         case WM8960_SYSCLKDIV:
 831                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
 832                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 833                 break;
 834         case WM8960_DACDIV:
 835                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
 836                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 837                 break;
 838         case WM8960_OPCLKDIV:
 839                 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
 840                 snd_soc_write(codec, WM8960_PLL1, reg | div);
 841                 break;
 842         case WM8960_DCLKDIV:
 843                 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
 844                 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
 845                 break;
 846         case WM8960_TOCLKSEL:
 847                 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
 848                 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
 849                 break;
 850         default:
 851                 return -EINVAL;
 852         }
 853
 854         return 0;
 855 }
 856
 857 static int wm8960_set_bias_level(struct snd_soc_codec *codec,
 858                                  enum snd_soc_bias_level level)
 859 {
 860         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 861
 862         return wm8960->set_bias_level(codec, level);
 863 }
 864
 865 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
 866
 867 #define WM8960_FORMATS \
 868         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 869         SNDRV_PCM_FMTBIT_S24_LE)
 870
 871 static const struct snd_soc_dai_ops wm8960_dai_ops = {
 872         .hw_params = wm8960_hw_params,
 873         .digital_mute = wm8960_mute,
 874         .set_fmt = wm8960_set_dai_fmt,
 875         .set_clkdiv = wm8960_set_dai_clkdiv,
 876         .set_pll = wm8960_set_dai_pll,
 877 };
 878
 879 static struct snd_soc_dai_driver wm8960_dai = {
 880         .name = "wm8960-hifi",
 881         .playback = {
 882                 .stream_name = "Playback",
 883                 .channels_min = 1,
 884                 .channels_max = 2,
 885                 .rates = WM8960_RATES,
 886                 .formats = WM8960_FORMATS,},
 887         .capture = {
 888                 .stream_name = "Capture",
 889                 .channels_min = 1,
 890                 .channels_max = 2,
 891                 .rates = WM8960_RATES,
 892                 .formats = WM8960_FORMATS,},
 893         .ops = &wm8960_dai_ops,
 894         .symmetric_rates = 1,
 895 };
 896
 897 static int wm8960_suspend(struct snd_soc_codec *codec)
 898 {
 899         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 900
 901         wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
 902         return 0;
 903 }
 904
 905 static int wm8960_resume(struct snd_soc_codec *codec)
 906 {
 907         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 908
 909         wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 910         return 0;
 911 }
 912
 913 static int wm8960_probe(struct snd_soc_codec *codec)
 914 {
 915         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 916         struct wm8960_data *pdata = dev_get_platdata(codec->dev);
 917         int ret;
 918         u16 reg;
 919
 920         wm8960->set_bias_level = wm8960_set_bias_level_out3;
 921
 922         if (!pdata) {
 923                 dev_warn(codec->dev, "No platform data supplied\n");
 924         } else {
 925                 if (pdata->dres > WM8960_DRES_MAX) {
 926                         dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
 927                         pdata->dres = 0;
 928                 }
 929
 930                 if (pdata->capless)
 931                         wm8960->set_bias_level = wm8960_set_bias_level_capless;
 932         }
 933
 934         ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8960->control_type);
 935         if (ret < 0) {
 936                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 937                 return ret;
 938         }
 939
 940         ret = wm8960_reset(codec);
 941         if (ret < 0) {
 942                 dev_err(codec->dev, "Failed to issue reset\n");
 943                 return ret;
 944         }
 945
 946         wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 947
 948         /* Latch the update bits */
 949         reg = snd_soc_read(codec, WM8960_LINVOL);
 950         snd_soc_write(codec, WM8960_LINVOL, reg | 0x100);
 951         reg = snd_soc_read(codec, WM8960_RINVOL);
 952         snd_soc_write(codec, WM8960_RINVOL, reg | 0x100);
 953         reg = snd_soc_read(codec, WM8960_LADC);
 954         snd_soc_write(codec, WM8960_LADC, reg | 0x100);
 955         reg = snd_soc_read(codec, WM8960_RADC);
 956         snd_soc_write(codec, WM8960_RADC, reg | 0x100);
 957         reg = snd_soc_read(codec, WM8960_LDAC);
 958         snd_soc_write(codec, WM8960_LDAC, reg | 0x100);
 959         reg = snd_soc_read(codec, WM8960_RDAC);
 960         snd_soc_write(codec, WM8960_RDAC, reg | 0x100);
 961         reg = snd_soc_read(codec, WM8960_LOUT1);
 962         snd_soc_write(codec, WM8960_LOUT1, reg | 0x100);
 963         reg = snd_soc_read(codec, WM8960_ROUT1);
 964         snd_soc_write(codec, WM8960_ROUT1, reg | 0x100);
 965         reg = snd_soc_read(codec, WM8960_LOUT2);
 966         snd_soc_write(codec, WM8960_LOUT2, reg | 0x100);
 967         reg = snd_soc_read(codec, WM8960_ROUT2);
 968         snd_soc_write(codec, WM8960_ROUT2, reg | 0x100);
 969
 970         snd_soc_add_controls(codec, wm8960_snd_controls,
 971                                      ARRAY_SIZE(wm8960_snd_controls));
 972         wm8960_add_widgets(codec);
 973
 974         return 0;
 975 }
 976
 977 /* power down chip */
 978 static int wm8960_remove(struct snd_soc_codec *codec)
 979 {
 980         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 981
 982         wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
 983         return 0;
 984 }
 985
 986 static struct snd_soc_codec_driver soc_codec_dev_wm8960 = {
 987         .probe =        wm8960_probe,
 988         .remove =       wm8960_remove,
 989         .suspend =      wm8960_suspend,
 990         .resume =       wm8960_resume,
 991         .set_bias_level = wm8960_set_bias_level,
 992         .reg_cache_size = ARRAY_SIZE(wm8960_reg),
 993         .reg_word_size = sizeof(u16),
 994         .reg_cache_default = wm8960_reg,
 995 };
 996
 997 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 998 static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
 999                                       const struct i2c_device_id *id)
1000 {
1001         struct wm8960_priv *wm8960;
1002         int ret;
1003
1004         wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL);
1005         if (wm8960 == NULL)
1006                 return -ENOMEM;
1007
1008         i2c_set_clientdata(i2c, wm8960);
1009         wm8960->control_type = SND_SOC_I2C;
1010
1011         ret = snd_soc_register_codec(&i2c->dev,
1012                         &soc_codec_dev_wm8960, &wm8960_dai, 1);
1013         if (ret < 0)
1014                 kfree(wm8960);
1015         return ret;
1016 }
1017
1018 static __devexit int wm8960_i2c_remove(struct i2c_client *client)
1019 {
1020         snd_soc_unregister_codec(&client->dev);
1021         kfree(i2c_get_clientdata(client));
1022         return 0;
1023 }
1024
1025 static const struct i2c_device_id wm8960_i2c_id[] = {
1026         { "wm8960", 0 },
1027         { }
1028 };
1029 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1030
1031 static struct i2c_driver wm8960_i2c_driver = {
1032         .driver = {
1033                 .name = "wm8960-codec",
1034                 .owner = THIS_MODULE,
1035         },
1036         .probe =    wm8960_i2c_probe,
1037         .remove =   __devexit_p(wm8960_i2c_remove),
1038         .id_table = wm8960_i2c_id,
1039 };
1040 #endif
1041
1042 static int __init wm8960_modinit(void)
1043 {
1044         int ret = 0;
1045 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1046         ret = i2c_add_driver(&wm8960_i2c_driver);
1047         if (ret != 0) {
1048                 printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
1049                        ret);
1050         }
1051 #endif
1052         return ret;
1053 }
1054 module_init(wm8960_modinit);
1055
1056 static void __exit wm8960_exit(void)
1057 {
1058 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1059         i2c_del_driver(&wm8960_i2c_driver);
1060 #endif
1061 }
1062 module_exit(wm8960_exit);
1063
1064 MODULE_DESCRIPTION("ASoC WM8960 driver");
1065 MODULE_AUTHOR("Liam Girdwood");
1066 MODULE_LICENSE("GPL");