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/platform_device.h>
  18 #include <linux/slab.h>
  19 #include <sound/core.h>
  20 #include <sound/pcm.h>
  21 #include <sound/pcm_params.h>
  22 #include <sound/soc.h>
  23 #include <sound/soc-dapm.h>
  24 #include <sound/initval.h>
  25 #include <sound/tlv.h>
  26 #include <sound/wm8960.h>
  27
  28 #include "wm8960.h"
  29
  30 #define AUDIO_NAME "wm8960"
  31
  32 /* R25 - Power 1 */
  33 #define WM8960_VMID_MASK 0x180
  34 #define WM8960_VREF      0x40
  35
  36 /* R26 - Power 2 */
  37 #define WM8960_PWR2_LOUT1       0x40
  38 #define WM8960_PWR2_ROUT1       0x20
  39 #define WM8960_PWR2_OUT3        0x02
  40
  41 /* R28 - Anti-pop 1 */
  42 #define WM8960_POBCTRL   0x80
  43 #define WM8960_BUFDCOPEN 0x10
  44 #define WM8960_BUFIOEN   0x08
  45 #define WM8960_SOFT_ST   0x04
  46 #define WM8960_HPSTBY    0x01
  47
  48 /* R29 - Anti-pop 2 */
  49 #define WM8960_DISOP     0x40
  50 #define WM8960_DRES_MASK 0x30
  51
  52 /*
  53  * wm8960 register cache
  54  * We can't read the WM8960 register space when we are
  55  * using 2 wire for device control, so we cache them instead.
  56  */
  57 static const u16 wm8960_reg[WM8960_CACHEREGNUM] = {
  58         0x0097, 0x0097, 0x0000, 0x0000,
  59         0x0000, 0x0008, 0x0000, 0x000a,
  60         0x01c0, 0x0000, 0x00ff, 0x00ff,
  61         0x0000, 0x0000, 0x0000, 0x0000,
  62         0x0000, 0x007b, 0x0100, 0x0032,
  63         0x0000, 0x00c3, 0x00c3, 0x01c0,
  64         0x0000, 0x0000, 0x0000, 0x0000,
  65         0x0000, 0x0000, 0x0000, 0x0000,
  66         0x0100, 0x0100, 0x0050, 0x0050,
  67         0x0050, 0x0050, 0x0000, 0x0000,
  68         0x0000, 0x0000, 0x0040, 0x0000,
  69         0x0000, 0x0050, 0x0050, 0x0000,
  70         0x0002, 0x0037, 0x004d, 0x0080,
  71         0x0008, 0x0031, 0x0026, 0x00e9,
  72 };
  73
  74 struct wm8960_priv {
  75         u16 reg_cache[WM8960_CACHEREGNUM];
  76         enum snd_soc_control_type control_type;
  77         void *control_data;
  78         int (*set_bias_level)(struct snd_soc_codec *,
  79                               enum snd_soc_bias_level level);
  80         struct snd_soc_dapm_widget *lout1;
  81         struct snd_soc_dapm_widget *rout1;
  82         struct snd_soc_dapm_widget *out3;
  83         bool deemph;
  84         int playback_fs;
  85 };
  86
  87 #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
  88
  89 /* enumerated controls */
  90 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
  91         "Right Inverted", "Stereo Inversion"};
  92 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
  93 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
  94 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
  95 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
  96
  97 static const struct soc_enum wm8960_enum[] = {
  98         SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
  99         SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
 100         SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
 101         SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
 102         SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
 103         SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
 104 };
 105
 106 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
 107
 108 static int wm8960_set_deemph(struct snd_soc_codec *codec)
 109 {
 110         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 111         int val, i, best;
 112
 113         /* If we're using deemphasis select the nearest available sample
 114          * rate.
 115          */
 116         if (wm8960->deemph) {
 117                 best = 1;
 118                 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
 119                         if (abs(deemph_settings[i] - wm8960->playback_fs) <
 120                             abs(deemph_settings[best] - wm8960->playback_fs))
 121                                 best = i;
 122                 }
 123
 124                 val = best << 1;
 125         } else {
 126                 val = 0;
 127         }
 128
 129         dev_dbg(codec->dev, "Set deemphasis %d\n", val);
 130
 131         return snd_soc_update_bits(codec, WM8960_DACCTL1,
 132                                    0x6, val);
 133 }
 134
 135 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
 136                              struct snd_ctl_elem_value *ucontrol)
 137 {
 138         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 139         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 140
 141         return wm8960->deemph;
 142 }
 143
 144 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
 145                              struct snd_ctl_elem_value *ucontrol)
 146 {
 147         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 148         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 149         int deemph = ucontrol->value.enumerated.item[0];
 150
 151         if (deemph > 1)
 152                 return -EINVAL;
 153
 154         wm8960->deemph = deemph;
 155
 156         return wm8960_set_deemph(codec);
 157 }
 158
 159 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
 160 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
 161 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
 162 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
 163
 164 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
 165 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
 166                  0, 63, 0, adc_tlv),
 167 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
 168         6, 1, 0),
 169 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
 170         7, 1, 0),
 171
 172 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
 173                  0, 255, 0, dac_tlv),
 174
 175 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
 176                  0, 127, 0, out_tlv),
 177 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
 178         7, 1, 0),
 179
 180 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
 181                  0, 127, 0, out_tlv),
 182 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
 183         7, 1, 0),
 184 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
 185 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
 186
 187 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
 188 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
 189 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
 190
 191 SOC_ENUM("DAC Polarity", wm8960_enum[2]),
 192 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
 193                     wm8960_get_deemph, wm8960_put_deemph),
 194
 195 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
 196 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
 197 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
 198 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
 199
 200 SOC_ENUM("ALC Function", wm8960_enum[4]),
 201 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
 202 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
 203 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
 204 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
 205 SOC_ENUM("ALC Mode", wm8960_enum[5]),
 206 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
 207 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
 208
 209 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
 210 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
 211
 212 SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
 213         0, 127, 0),
 214
 215 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
 216                WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
 217 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
 218                WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
 219 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
 220                WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
 221 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
 222                WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
 223 };
 224
 225 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
 226 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
 227 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
 228 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
 229 };
 230
 231 static const struct snd_kcontrol_new wm8960_lin[] = {
 232 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
 233 };
 234
 235 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
 236 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
 237 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
 238 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
 239 };
 240
 241 static const struct snd_kcontrol_new wm8960_rin[] = {
 242 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
 243 };
 244
 245 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
 246 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
 247 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
 248 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
 249 };
 250
 251 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
 252 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
 253 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
 254 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
 255 };
 256
 257 static const struct snd_kcontrol_new wm8960_mono_out[] = {
 258 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
 259 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
 260 };
 261
 262 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
 263 SND_SOC_DAPM_INPUT("LINPUT1"),
 264 SND_SOC_DAPM_INPUT("RINPUT1"),
 265 SND_SOC_DAPM_INPUT("LINPUT2"),
 266 SND_SOC_DAPM_INPUT("RINPUT2"),
 267 SND_SOC_DAPM_INPUT("LINPUT3"),
 268 SND_SOC_DAPM_INPUT("RINPUT3"),
 269
 270 SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0),
 271
 272 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
 273                    wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
 274 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
 275                    wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
 276
 277 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
 278                    wm8960_lin, ARRAY_SIZE(wm8960_lin)),
 279 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
 280                    wm8960_rin, ARRAY_SIZE(wm8960_rin)),
 281
 282 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
 283 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
 284
 285 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
 286 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
 287
 288 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
 289         &wm8960_loutput_mixer[0],
 290         ARRAY_SIZE(wm8960_loutput_mixer)),
 291 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
 292         &wm8960_routput_mixer[0],
 293         ARRAY_SIZE(wm8960_routput_mixer)),
 294
 295 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
 296 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
 297
 298 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
 299 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
 300
 301 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
 302 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
 303
 304 SND_SOC_DAPM_OUTPUT("SPK_LP"),
 305 SND_SOC_DAPM_OUTPUT("SPK_LN"),
 306 SND_SOC_DAPM_OUTPUT("HP_L"),
 307 SND_SOC_DAPM_OUTPUT("HP_R"),
 308 SND_SOC_DAPM_OUTPUT("SPK_RP"),
 309 SND_SOC_DAPM_OUTPUT("SPK_RN"),
 310 SND_SOC_DAPM_OUTPUT("OUT3"),
 311 };
 312
 313 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
 314 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
 315         &wm8960_mono_out[0],
 316         ARRAY_SIZE(wm8960_mono_out)),
 317 };
 318
 319 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
 320 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
 321 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
 322 };
 323
 324 static const struct snd_soc_dapm_route audio_paths[] = {
 325         { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
 326         { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
 327         { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
 328
 329         { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
 330         { "Left Input Mixer", NULL, "LINPUT1", },  /* Really Boost Switch */
 331         { "Left Input Mixer", NULL, "LINPUT2" },
 332         { "Left Input Mixer", NULL, "LINPUT3" },
 333
 334         { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
 335         { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
 336         { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
 337
 338         { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
 339         { "Right Input Mixer", NULL, "RINPUT1", },  /* Really Boost Switch */
 340         { "Right Input Mixer", NULL, "RINPUT2" },
 341         { "Right Input Mixer", NULL, "LINPUT3" },
 342
 343         { "Left ADC", NULL, "Left Input Mixer" },
 344         { "Right ADC", NULL, "Right Input Mixer" },
 345
 346         { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
 347         { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
 348         { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
 349
 350         { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
 351         { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
 352         { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
 353
 354         { "LOUT1 PGA", NULL, "Left Output Mixer" },
 355         { "ROUT1 PGA", NULL, "Right Output Mixer" },
 356
 357         { "HP_L", NULL, "LOUT1 PGA" },
 358         { "HP_R", NULL, "ROUT1 PGA" },
 359
 360         { "Left Speaker PGA", NULL, "Left Output Mixer" },
 361         { "Right Speaker PGA", NULL, "Right Output Mixer" },
 362
 363         { "Left Speaker Output", NULL, "Left Speaker PGA" },
 364         { "Right Speaker Output", NULL, "Right Speaker PGA" },
 365
 366         { "SPK_LN", NULL, "Left Speaker Output" },
 367         { "SPK_LP", NULL, "Left Speaker Output" },
 368         { "SPK_RN", NULL, "Right Speaker Output" },
 369         { "SPK_RP", NULL, "Right Speaker Output" },
 370 };
 371
 372 static const struct snd_soc_dapm_route audio_paths_out3[] = {
 373         { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
 374         { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
 375
 376         { "OUT3", NULL, "Mono Output Mixer", }
 377 };
 378
 379 static const struct snd_soc_dapm_route audio_paths_capless[] = {
 380         { "HP_L", NULL, "OUT3 VMID" },
 381         { "HP_R", NULL, "OUT3 VMID" },
 382
 383         { "OUT3 VMID", NULL, "Left Output Mixer" },
 384         { "OUT3 VMID", NULL, "Right Output Mixer" },
 385 };
 386
 387 static int wm8960_add_widgets(struct snd_soc_codec *codec)
 388 {
 389         struct wm8960_data *pdata = codec->dev->platform_data;
 390         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 391         struct snd_soc_dapm_widget *w;
 392
 393         snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets,
 394                                   ARRAY_SIZE(wm8960_dapm_widgets));
 395
 396         snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
 397
 398         /* In capless mode OUT3 is used to provide VMID for the
 399          * headphone outputs, otherwise it is used as a mono mixer.
 400          */
 401         if (pdata && pdata->capless) {
 402                 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets_capless,
 403                                           ARRAY_SIZE(wm8960_dapm_widgets_capless));
 404
 405                 snd_soc_dapm_add_routes(codec, audio_paths_capless,
 406                                         ARRAY_SIZE(audio_paths_capless));
 407         } else {
 408                 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets_out3,
 409                                           ARRAY_SIZE(wm8960_dapm_widgets_out3));
 410
 411                 snd_soc_dapm_add_routes(codec, audio_paths_out3,
 412                                         ARRAY_SIZE(audio_paths_out3));
 413         }
 414
 415         /* We need to power up the headphone output stage out of
 416          * sequence for capless mode.  To save scanning the widget
 417          * list each time to find the desired power state do so now
 418          * and save the result.
 419          */
 420         list_for_each_entry(w, &codec->dapm_widgets, list) {
 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->bias_level == SND_SOC_BIAS_OFF) {
 576                         /* Enable anti-pop features */
 577                         snd_soc_write(codec, WM8960_APOP1,
 578                                       WM8960_POBCTRL | WM8960_SOFT_ST |
 579                                       WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 580
 581                         /* Enable & ramp VMID at 2x50k */
 582                         reg = snd_soc_read(codec, WM8960_POWER1);
 583                         reg |= 0x80;
 584                         snd_soc_write(codec, WM8960_POWER1, reg);
 585                         msleep(100);
 586
 587                         /* Enable VREF */
 588                         snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF);
 589
 590                         /* Disable anti-pop features */
 591                         snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
 592                 }
 593
 594                 /* Set VMID to 2x250k */
 595                 reg = snd_soc_read(codec, WM8960_POWER1);
 596                 reg &= ~0x180;
 597                 reg |= 0x100;
 598                 snd_soc_write(codec, WM8960_POWER1, reg);
 599                 break;
 600
 601         case SND_SOC_BIAS_OFF:
 602                 /* Enable anti-pop features */
 603                 snd_soc_write(codec, WM8960_APOP1,
 604                              WM8960_POBCTRL | WM8960_SOFT_ST |
 605                              WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 606
 607                 /* Disable VMID and VREF, let them discharge */
 608                 snd_soc_write(codec, WM8960_POWER1, 0);
 609                 msleep(600);
 610                 break;
 611         }
 612
 613         codec->bias_level = level;
 614
 615         return 0;
 616 }
 617
 618 static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
 619                                          enum snd_soc_bias_level level)
 620 {
 621         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 622         int reg;
 623
 624         switch (level) {
 625         case SND_SOC_BIAS_ON:
 626                 break;
 627
 628         case SND_SOC_BIAS_PREPARE:
 629                 switch (codec->bias_level) {
 630                 case SND_SOC_BIAS_STANDBY:
 631                         /* Enable anti pop mode */
 632                         snd_soc_update_bits(codec, WM8960_APOP1,
 633                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 634                                             WM8960_BUFDCOPEN,
 635                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 636                                             WM8960_BUFDCOPEN);
 637
 638                         /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
 639                         reg = 0;
 640                         if (wm8960->lout1 && wm8960->lout1->power)
 641                                 reg |= WM8960_PWR2_LOUT1;
 642                         if (wm8960->rout1 && wm8960->rout1->power)
 643                                 reg |= WM8960_PWR2_ROUT1;
 644                         if (wm8960->out3 && wm8960->out3->power)
 645                                 reg |= WM8960_PWR2_OUT3;
 646                         snd_soc_update_bits(codec, WM8960_POWER2,
 647                                             WM8960_PWR2_LOUT1 |
 648                                             WM8960_PWR2_ROUT1 |
 649                                             WM8960_PWR2_OUT3, reg);
 650
 651                         /* Enable VMID at 2*50k */
 652                         snd_soc_update_bits(codec, WM8960_POWER1,
 653                                             WM8960_VMID_MASK, 0x80);
 654
 655                         /* Ramp */
 656                         msleep(100);
 657
 658                         /* Enable VREF */
 659                         snd_soc_update_bits(codec, WM8960_POWER1,
 660                                             WM8960_VREF, WM8960_VREF);
 661
 662                         msleep(100);
 663                         break;
 664
 665                 case SND_SOC_BIAS_ON:
 666                         /* Enable anti-pop mode */
 667                         snd_soc_update_bits(codec, WM8960_APOP1,
 668                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 669                                             WM8960_BUFDCOPEN,
 670                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 671                                             WM8960_BUFDCOPEN);
 672
 673                         /* Disable VMID and VREF */
 674                         snd_soc_update_bits(codec, WM8960_POWER1,
 675                                             WM8960_VREF | WM8960_VMID_MASK, 0);
 676                         break;
 677
 678                 default:
 679                         break;
 680                 }
 681                 break;
 682
 683         case SND_SOC_BIAS_STANDBY:
 684                 switch (codec->bias_level) {
 685                 case SND_SOC_BIAS_PREPARE:
 686                         /* Disable HP discharge */
 687                         snd_soc_update_bits(codec, WM8960_APOP2,
 688                                             WM8960_DISOP | WM8960_DRES_MASK,
 689                                             0);
 690
 691                         /* Disable anti-pop features */
 692                         snd_soc_update_bits(codec, WM8960_APOP1,
 693                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 694                                             WM8960_BUFDCOPEN,
 695                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 696                                             WM8960_BUFDCOPEN);
 697                         break;
 698
 699                 default:
 700                         break;
 701                 }
 702                 break;
 703
 704         case SND_SOC_BIAS_OFF:
 705                 break;
 706         }
 707
 708         codec->bias_level = level;
 709
 710         return 0;
 711 }
 712
 713 /* PLL divisors */
 714 struct _pll_div {
 715         u32 pre_div:1;
 716         u32 n:4;
 717         u32 k:24;
 718 };
 719
 720 /* The size in bits of the pll divide multiplied by 10
 721  * to allow rounding later */
 722 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 723
 724 static int pll_factors(unsigned int source, unsigned int target,
 725                        struct _pll_div *pll_div)
 726 {
 727         unsigned long long Kpart;
 728         unsigned int K, Ndiv, Nmod;
 729
 730         pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
 731
 732         /* Scale up target to PLL operating frequency */
 733         target *= 4;
 734
 735         Ndiv = target / source;
 736         if (Ndiv < 6) {
 737                 source >>= 1;
 738                 pll_div->pre_div = 1;
 739                 Ndiv = target / source;
 740         } else
 741                 pll_div->pre_div = 0;
 742
 743         if ((Ndiv < 6) || (Ndiv > 12)) {
 744                 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
 745                 return -EINVAL;
 746         }
 747
 748         pll_div->n = Ndiv;
 749         Nmod = target % source;
 750         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 751
 752         do_div(Kpart, source);
 753
 754         K = Kpart & 0xFFFFFFFF;
 755
 756         /* Check if we need to round */
 757         if ((K % 10) >= 5)
 758                 K += 5;
 759
 760         /* Move down to proper range now rounding is done */
 761         K /= 10;
 762
 763         pll_div->k = K;
 764
 765         pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
 766                  pll_div->n, pll_div->k, pll_div->pre_div);
 767
 768         return 0;
 769 }
 770
 771 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 772                 int source, unsigned int freq_in, unsigned int freq_out)
 773 {
 774         struct snd_soc_codec *codec = codec_dai->codec;
 775         u16 reg;
 776         static struct _pll_div pll_div;
 777         int ret;
 778
 779         if (freq_in && freq_out) {
 780                 ret = pll_factors(freq_in, freq_out, &pll_div);
 781                 if (ret != 0)
 782                         return ret;
 783         }
 784
 785         /* Disable the PLL: even if we are changing the frequency the
 786          * PLL needs to be disabled while we do so. */
 787         snd_soc_write(codec, WM8960_CLOCK1,
 788                      snd_soc_read(codec, WM8960_CLOCK1) & ~1);
 789         snd_soc_write(codec, WM8960_POWER2,
 790                      snd_soc_read(codec, WM8960_POWER2) & ~1);
 791
 792         if (!freq_in || !freq_out)
 793                 return 0;
 794
 795         reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
 796         reg |= pll_div.pre_div << 4;
 797         reg |= pll_div.n;
 798
 799         if (pll_div.k) {
 800                 reg |= 0x20;
 801
 802                 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
 803                 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
 804                 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
 805         }
 806         snd_soc_write(codec, WM8960_PLL1, reg);
 807
 808         /* Turn it on */
 809         snd_soc_write(codec, WM8960_POWER2,
 810                      snd_soc_read(codec, WM8960_POWER2) | 1);
 811         msleep(250);
 812         snd_soc_write(codec, WM8960_CLOCK1,
 813                      snd_soc_read(codec, WM8960_CLOCK1) | 1);
 814
 815         return 0;
 816 }
 817
 818 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 819                 int div_id, int div)
 820 {
 821         struct snd_soc_codec *codec = codec_dai->codec;
 822         u16 reg;
 823
 824         switch (div_id) {
 825         case WM8960_SYSCLKDIV:
 826                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
 827                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 828                 break;
 829         case WM8960_DACDIV:
 830                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
 831                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 832                 break;
 833         case WM8960_OPCLKDIV:
 834                 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
 835                 snd_soc_write(codec, WM8960_PLL1, reg | div);
 836                 break;
 837         case WM8960_DCLKDIV:
 838                 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
 839                 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
 840                 break;
 841         case WM8960_TOCLKSEL:
 842                 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
 843                 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
 844                 break;
 845         default:
 846                 return -EINVAL;
 847         }
 848
 849         return 0;
 850 }
 851
 852 static int wm8960_set_bias_level(struct snd_soc_codec *codec,
 853                                  enum snd_soc_bias_level level)
 854 {
 855         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 856
 857         return wm8960->set_bias_level(codec, level);
 858 }
 859
 860 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
 861
 862 #define WM8960_FORMATS \
 863         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 864         SNDRV_PCM_FMTBIT_S24_LE)
 865
 866 static struct snd_soc_dai_ops wm8960_dai_ops = {
 867         .hw_params = wm8960_hw_params,
 868         .digital_mute = wm8960_mute,
 869         .set_fmt = wm8960_set_dai_fmt,
 870         .set_clkdiv = wm8960_set_dai_clkdiv,
 871         .set_pll = wm8960_set_dai_pll,
 872 };
 873
 874 static struct snd_soc_dai_driver wm8960_dai = {
 875         .name = "wm8960-hifi",
 876         .playback = {
 877                 .stream_name = "Playback",
 878                 .channels_min = 1,
 879                 .channels_max = 2,
 880                 .rates = WM8960_RATES,
 881                 .formats = WM8960_FORMATS,},
 882         .capture = {
 883                 .stream_name = "Capture",
 884                 .channels_min = 1,
 885                 .channels_max = 2,
 886                 .rates = WM8960_RATES,
 887                 .formats = WM8960_FORMATS,},
 888         .ops = &wm8960_dai_ops,
 889         .symmetric_rates = 1,
 890 };
 891
 892 static int wm8960_suspend(struct snd_soc_codec *codec, pm_message_t state)
 893 {
 894         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 895
 896         wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
 897         return 0;
 898 }
 899
 900 static int wm8960_resume(struct snd_soc_codec *codec)
 901 {
 902         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 903         int i;
 904         u8 data[2];
 905         u16 *cache = codec->reg_cache;
 906
 907         /* Sync reg_cache with the hardware */
 908         for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) {
 909                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 910                 data[1] = cache[i] & 0x00ff;
 911                 codec->hw_write(codec->control_data, data, 2);
 912         }
 913
 914         wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 915         return 0;
 916 }
 917
 918 static int wm8960_probe(struct snd_soc_codec *codec)
 919 {
 920         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 921         struct wm8960_data *pdata = dev_get_platdata(codec->dev);
 922         int ret;
 923         u16 reg;
 924
 925         wm8960->set_bias_level = wm8960_set_bias_level_out3;
 926         codec->control_data = wm8960->control_data;
 927
 928         if (!pdata) {
 929                 dev_warn(codec->dev, "No platform data supplied\n");
 930         } else {
 931                 if (pdata->dres > WM8960_DRES_MAX) {
 932                         dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
 933                         pdata->dres = 0;
 934                 }
 935
 936                 if (pdata->capless)
 937                         wm8960->set_bias_level = wm8960_set_bias_level_capless;
 938         }
 939
 940         ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8960->control_type);
 941         if (ret < 0) {
 942                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 943                 return ret;
 944         }
 945
 946         ret = wm8960_reset(codec);
 947         if (ret < 0) {
 948                 dev_err(codec->dev, "Failed to issue reset\n");
 949                 return ret;
 950         }
 951
 952         wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 953
 954         /* Latch the update bits */
 955         reg = snd_soc_read(codec, WM8960_LINVOL);
 956         snd_soc_write(codec, WM8960_LINVOL, reg | 0x100);
 957         reg = snd_soc_read(codec, WM8960_RINVOL);
 958         snd_soc_write(codec, WM8960_RINVOL, reg | 0x100);
 959         reg = snd_soc_read(codec, WM8960_LADC);
 960         snd_soc_write(codec, WM8960_LADC, reg | 0x100);
 961         reg = snd_soc_read(codec, WM8960_RADC);
 962         snd_soc_write(codec, WM8960_RADC, reg | 0x100);
 963         reg = snd_soc_read(codec, WM8960_LDAC);
 964         snd_soc_write(codec, WM8960_LDAC, reg | 0x100);
 965         reg = snd_soc_read(codec, WM8960_RDAC);
 966         snd_soc_write(codec, WM8960_RDAC, reg | 0x100);
 967         reg = snd_soc_read(codec, WM8960_LOUT1);
 968         snd_soc_write(codec, WM8960_LOUT1, reg | 0x100);
 969         reg = snd_soc_read(codec, WM8960_ROUT1);
 970         snd_soc_write(codec, WM8960_ROUT1, reg | 0x100);
 971         reg = snd_soc_read(codec, WM8960_LOUT2);
 972         snd_soc_write(codec, WM8960_LOUT2, reg | 0x100);
 973         reg = snd_soc_read(codec, WM8960_ROUT2);
 974         snd_soc_write(codec, WM8960_ROUT2, reg | 0x100);
 975
 976         snd_soc_add_controls(codec, wm8960_snd_controls,
 977                                      ARRAY_SIZE(wm8960_snd_controls));
 978         wm8960_add_widgets(codec);
 979
 980         return 0;
 981 }
 982
 983 /* power down chip */
 984 static int wm8960_remove(struct snd_soc_codec *codec)
 985 {
 986         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 987
 988         wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
 989         return 0;
 990 }
 991
 992 static struct snd_soc_codec_driver soc_codec_dev_wm8960 = {
 993         .probe =        wm8960_probe,
 994         .remove =       wm8960_remove,
 995         .suspend =      wm8960_suspend,
 996         .resume =       wm8960_resume,
 997         .set_bias_level = wm8960_set_bias_level,
 998         .reg_cache_size = ARRAY_SIZE(wm8960_reg),
 999         .reg_word_size = sizeof(u16),
1000         .reg_cache_default = wm8960_reg,
1001 };
1002
1003 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1004 static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
1005                                       const struct i2c_device_id *id)
1006 {
1007         struct wm8960_priv *wm8960;
1008         int ret;
1009
1010         wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL);
1011         if (wm8960 == NULL)
1012                 return -ENOMEM;
1013
1014         i2c_set_clientdata(i2c, wm8960);
1015         wm8960->control_data = i2c;
1016
1017         ret = snd_soc_register_codec(&i2c->dev,
1018                         &soc_codec_dev_wm8960, &wm8960_dai, 1);
1019         if (ret < 0)
1020                 kfree(wm8960);
1021         return ret;
1022 }
1023
1024 static __devexit int wm8960_i2c_remove(struct i2c_client *client)
1025 {
1026         snd_soc_unregister_codec(&client->dev);
1027         kfree(i2c_get_clientdata(client));
1028         return 0;
1029 }
1030
1031 static const struct i2c_device_id wm8960_i2c_id[] = {
1032         { "wm8960", 0 },
1033         { }
1034 };
1035 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1036
1037 static struct i2c_driver wm8960_i2c_driver = {
1038         .driver = {
1039                 .name = "wm8960-codec",
1040                 .owner = THIS_MODULE,
1041         },
1042         .probe =    wm8960_i2c_probe,
1043         .remove =   __devexit_p(wm8960_i2c_remove),
1044         .id_table = wm8960_i2c_id,
1045 };
1046 #endif
1047
1048 static int __init wm8960_modinit(void)
1049 {
1050         int ret = 0;
1051 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1052         ret = i2c_add_driver(&wm8960_i2c_driver);
1053         if (ret != 0) {
1054                 printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
1055                        ret);
1056         }
1057 #endif
1058         return ret;
1059 }
1060 module_init(wm8960_modinit);
1061
1062 static void __exit wm8960_exit(void)
1063 {
1064 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1065         i2c_del_driver(&wm8960_i2c_driver);
1066 #endif
1067 }
1068 module_exit(wm8960_exit);
1069
1070 MODULE_DESCRIPTION("ASoC WM8960 driver");
1071 MODULE_AUTHOR("Liam Girdwood");
1072 MODULE_LICENSE("GPL");