sound/soc/codecs/wm8750.c

   1 /*
   2  * wm8750.c -- WM8750 ALSA SoC audio driver
   3  *
   4  * Copyright 2005 Openedhand Ltd.
   5  *
   6  * Author: Richard Purdie <richard@openedhand.com>
   7  *
   8  * Based on WM8753.c
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/moduleparam.h>
  17 #include <linux/init.h>
  18 #include <linux/delay.h>
  19 #include <linux/pm.h>
  20 #include <linux/i2c.h>
  21 #include <linux/platform_device.h>
  22 #include <sound/core.h>
  23 #include <sound/pcm.h>
  24 #include <sound/pcm_params.h>
  25 #include <sound/soc.h>
  26 #include <sound/soc-dapm.h>
  27 #include <sound/initval.h>
  28
  29 #include "wm8750.h"
  30
  31 #define AUDIO_NAME "WM8750"
  32 #define WM8750_VERSION "0.12"
  33
  34 /*
  35  * Debug
  36  */
  37
  38 #define WM8750_DEBUG 0
  39
  40 #ifdef WM8750_DEBUG
  41 #define dbg(format, arg...) \
  42         printk(KERN_DEBUG AUDIO_NAME ": " format "\n" , ## arg)
  43 #else
  44 #define dbg(format, arg...) do {} while (0)
  45 #endif
  46 #define err(format, arg...) \
  47         printk(KERN_ERR AUDIO_NAME ": " format "\n" , ## arg)
  48 #define info(format, arg...) \
  49         printk(KERN_INFO AUDIO_NAME ": " format "\n" , ## arg)
  50 #define warn(format, arg...) \
  51         printk(KERN_WARNING AUDIO_NAME ": " format "\n" , ## arg)
  52
  53 /* codec private data */
  54 struct wm8750_priv {
  55         unsigned int sysclk;
  56 };
  57
  58 /*
  59  * wm8750 register cache
  60  * We can't read the WM8750 register space when we
  61  * are using 2 wire for device control, so we cache them instead.
  62  */
  63 static const u16 wm8750_reg[] = {
  64         0x0097, 0x0097, 0x0079, 0x0079,  /*  0 */
  65         0x0000, 0x0008, 0x0000, 0x000a,  /*  4 */
  66         0x0000, 0x0000, 0x00ff, 0x00ff,  /*  8 */
  67         0x000f, 0x000f, 0x0000, 0x0000,  /* 12 */
  68         0x0000, 0x007b, 0x0000, 0x0032,  /* 16 */
  69         0x0000, 0x00c3, 0x00c3, 0x00c0,  /* 20 */
  70         0x0000, 0x0000, 0x0000, 0x0000,  /* 24 */
  71         0x0000, 0x0000, 0x0000, 0x0000,  /* 28 */
  72         0x0000, 0x0000, 0x0050, 0x0050,  /* 32 */
  73         0x0050, 0x0050, 0x0050, 0x0050,  /* 36 */
  74         0x0079, 0x0079, 0x0079,          /* 40 */
  75 };
  76
  77 /*
  78  * read wm8750 register cache
  79  */
  80 static inline unsigned int wm8750_read_reg_cache(struct snd_soc_codec *codec,
  81         unsigned int reg)
  82 {
  83         u16 *cache = codec->reg_cache;
  84         if (reg > WM8750_CACHE_REGNUM)
  85                 return -1;
  86         return cache[reg];
  87 }
  88
  89 /*
  90  * write wm8750 register cache
  91  */
  92 static inline void wm8750_write_reg_cache(struct snd_soc_codec *codec,
  93         unsigned int reg, unsigned int value)
  94 {
  95         u16 *cache = codec->reg_cache;
  96         if (reg > WM8750_CACHE_REGNUM)
  97                 return;
  98         cache[reg] = value;
  99 }
 100
 101 static int wm8750_write(struct snd_soc_codec *codec, unsigned int reg,
 102         unsigned int value)
 103 {
 104         u8 data[2];
 105
 106         /* data is
 107          *   D15..D9 WM8753 register offset
 108          *   D8...D0 register data
 109          */
 110         data[0] = (reg << 1) | ((value >> 8) & 0x0001);
 111         data[1] = value & 0x00ff;
 112
 113         wm8750_write_reg_cache(codec, reg, value);
 114         if (codec->hw_write(codec->control_data, data, 2) == 2)
 115                 return 0;
 116         else
 117                 return -EIO;
 118 }
 119
 120 #define wm8750_reset(c) wm8750_write(c, WM8750_RESET, 0)
 121
 122 /*
 123  * WM8750 Controls
 124  */
 125 static const char *wm8750_bass[] = {"Linear Control", "Adaptive Boost"};
 126 static const char *wm8750_bass_filter[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
 127 static const char *wm8750_treble[] = {"8kHz", "4kHz"};
 128 static const char *wm8750_3d_lc[] = {"200Hz", "500Hz"};
 129 static const char *wm8750_3d_uc[] = {"2.2kHz", "1.5kHz"};
 130 static const char *wm8750_3d_func[] = {"Capture", "Playback"};
 131 static const char *wm8750_alc_func[] = {"Off", "Right", "Left", "Stereo"};
 132 static const char *wm8750_ng_type[] = {"Constant PGA Gain",
 133         "Mute ADC Output"};
 134 static const char *wm8750_line_mux[] = {"Line 1", "Line 2", "Line 3", "PGA",
 135         "Differential"};
 136 static const char *wm8750_pga_sel[] = {"Line 1", "Line 2", "Line 3",
 137         "Differential"};
 138 static const char *wm8750_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut",
 139         "ROUT1"};
 140 static const char *wm8750_diff_sel[] = {"Line 1", "Line 2"};
 141 static const char *wm8750_adcpol[] = {"Normal", "L Invert", "R Invert",
 142         "L + R Invert"};
 143 static const char *wm8750_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
 144 static const char *wm8750_mono_mux[] = {"Stereo", "Mono (Left)",
 145         "Mono (Right)", "Digital Mono"};
 146
 147 static const struct soc_enum wm8750_enum[] = {
 148 SOC_ENUM_SINGLE(WM8750_BASS, 7, 2, wm8750_bass),
 149 SOC_ENUM_SINGLE(WM8750_BASS, 6, 2, wm8750_bass_filter),
 150 SOC_ENUM_SINGLE(WM8750_TREBLE, 6, 2, wm8750_treble),
 151 SOC_ENUM_SINGLE(WM8750_3D, 5, 2, wm8750_3d_lc),
 152 SOC_ENUM_SINGLE(WM8750_3D, 6, 2, wm8750_3d_uc),
 153 SOC_ENUM_SINGLE(WM8750_3D, 7, 2, wm8750_3d_func),
 154 SOC_ENUM_SINGLE(WM8750_ALC1, 7, 4, wm8750_alc_func),
 155 SOC_ENUM_SINGLE(WM8750_NGATE, 1, 2, wm8750_ng_type),
 156 SOC_ENUM_SINGLE(WM8750_LOUTM1, 0, 5, wm8750_line_mux),
 157 SOC_ENUM_SINGLE(WM8750_ROUTM1, 0, 5, wm8750_line_mux),
 158 SOC_ENUM_SINGLE(WM8750_LADCIN, 6, 4, wm8750_pga_sel), /* 10 */
 159 SOC_ENUM_SINGLE(WM8750_RADCIN, 6, 4, wm8750_pga_sel),
 160 SOC_ENUM_SINGLE(WM8750_ADCTL2, 7, 4, wm8750_out3),
 161 SOC_ENUM_SINGLE(WM8750_ADCIN, 8, 2, wm8750_diff_sel),
 162 SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol),
 163 SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph),
 164 SOC_ENUM_SINGLE(WM8750_ADCIN, 6, 4, wm8750_mono_mux), /* 16 */
 165
 166 };
 167
 168 static const struct snd_kcontrol_new wm8750_snd_controls[] = {
 169
 170 SOC_DOUBLE_R("Capture Volume", WM8750_LINVOL, WM8750_RINVOL, 0, 63, 0),
 171 SOC_DOUBLE_R("Capture ZC Switch", WM8750_LINVOL, WM8750_RINVOL, 6, 1, 0),
 172 SOC_DOUBLE_R("Capture Switch", WM8750_LINVOL, WM8750_RINVOL, 7, 1, 1),
 173
 174 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8750_LOUT1V,
 175         WM8750_ROUT1V, 7, 1, 0),
 176 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8750_LOUT2V,
 177         WM8750_ROUT2V, 7, 1, 0),
 178
 179 SOC_ENUM("Playback De-emphasis", wm8750_enum[15]),
 180
 181 SOC_ENUM("Capture Polarity", wm8750_enum[14]),
 182 SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0),
 183 SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0),
 184
 185 SOC_DOUBLE_R("PCM Volume", WM8750_LDAC, WM8750_RDAC, 0, 255, 0),
 186
 187 SOC_ENUM("Bass Boost", wm8750_enum[0]),
 188 SOC_ENUM("Bass Filter", wm8750_enum[1]),
 189 SOC_SINGLE("Bass Volume", WM8750_BASS, 0, 15, 1),
 190
 191 SOC_SINGLE("Treble Volume", WM8750_TREBLE, 0, 15, 1),
 192 SOC_ENUM("Treble Cut-off", wm8750_enum[2]),
 193
 194 SOC_SINGLE("3D Switch", WM8750_3D, 0, 1, 0),
 195 SOC_SINGLE("3D Volume", WM8750_3D, 1, 15, 0),
 196 SOC_ENUM("3D Lower Cut-off", wm8750_enum[3]),
 197 SOC_ENUM("3D Upper Cut-off", wm8750_enum[4]),
 198 SOC_ENUM("3D Mode", wm8750_enum[5]),
 199
 200 SOC_SINGLE("ALC Capture Target Volume", WM8750_ALC1, 0, 7, 0),
 201 SOC_SINGLE("ALC Capture Max Volume", WM8750_ALC1, 4, 7, 0),
 202 SOC_ENUM("ALC Capture Function", wm8750_enum[6]),
 203 SOC_SINGLE("ALC Capture ZC Switch", WM8750_ALC2, 7, 1, 0),
 204 SOC_SINGLE("ALC Capture Hold Time", WM8750_ALC2, 0, 15, 0),
 205 SOC_SINGLE("ALC Capture Decay Time", WM8750_ALC3, 4, 15, 0),
 206 SOC_SINGLE("ALC Capture Attack Time", WM8750_ALC3, 0, 15, 0),
 207 SOC_SINGLE("ALC Capture NG Threshold", WM8750_NGATE, 3, 31, 0),
 208 SOC_ENUM("ALC Capture NG Type", wm8750_enum[4]),
 209 SOC_SINGLE("ALC Capture NG Switch", WM8750_NGATE, 0, 1, 0),
 210
 211 SOC_SINGLE("Left ADC Capture Volume", WM8750_LADC, 0, 255, 0),
 212 SOC_SINGLE("Right ADC Capture Volume", WM8750_RADC, 0, 255, 0),
 213
 214 SOC_SINGLE("ZC Timeout Switch", WM8750_ADCTL1, 0, 1, 0),
 215 SOC_SINGLE("Playback Invert Switch", WM8750_ADCTL1, 1, 1, 0),
 216
 217 SOC_SINGLE("Right Speaker Playback Invert Switch", WM8750_ADCTL2, 4, 1, 0),
 218
 219 /* Unimplemented */
 220 /* ADCDAC Bit 0 - ADCHPD */
 221 /* ADCDAC Bit 4 - HPOR */
 222 /* ADCTL1 Bit 2,3 - DATSEL */
 223 /* ADCTL1 Bit 4,5 - DMONOMIX */
 224 /* ADCTL1 Bit 6,7 - VSEL */
 225 /* ADCTL2 Bit 2 - LRCM */
 226 /* ADCTL2 Bit 3 - TRI */
 227 /* ADCTL3 Bit 5 - HPFLREN */
 228 /* ADCTL3 Bit 6 - VROI */
 229 /* ADCTL3 Bit 7,8 - ADCLRM */
 230 /* ADCIN Bit 4 - LDCM */
 231 /* ADCIN Bit 5 - RDCM */
 232
 233 SOC_DOUBLE_R("Mic Boost", WM8750_LADCIN, WM8750_RADCIN, 4, 3, 0),
 234
 235 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8750_LOUTM1,
 236         WM8750_LOUTM2, 4, 7, 1),
 237 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8750_ROUTM1,
 238         WM8750_ROUTM2, 4, 7, 1),
 239 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8750_MOUTM1,
 240         WM8750_MOUTM2, 4, 7, 1),
 241
 242 SOC_SINGLE("Mono Playback ZC Switch", WM8750_MOUTV, 7, 1, 0),
 243
 244 SOC_DOUBLE_R("Headphone Playback Volume", WM8750_LOUT1V, WM8750_ROUT1V,
 245         0, 127, 0),
 246 SOC_DOUBLE_R("Speaker Playback Volume", WM8750_LOUT2V, WM8750_ROUT2V,
 247         0, 127, 0),
 248
 249 SOC_SINGLE("Mono Playback Volume", WM8750_MOUTV, 0, 127, 0),
 250
 251 };
 252
 253 /* add non dapm controls */
 254 static int wm8750_add_controls(struct snd_soc_codec *codec)
 255 {
 256         int err, i;
 257
 258         for (i = 0; i < ARRAY_SIZE(wm8750_snd_controls); i++) {
 259                 err = snd_ctl_add(codec->card,
 260                                 snd_soc_cnew(&wm8750_snd_controls[i],
 261                                                 codec, NULL));
 262                 if (err < 0)
 263                         return err;
 264         }
 265         return 0;
 266 }
 267
 268 /*
 269  * DAPM Controls
 270  */
 271
 272 /* Left Mixer */
 273 static const struct snd_kcontrol_new wm8750_left_mixer_controls[] = {
 274 SOC_DAPM_SINGLE("Playback Switch", WM8750_LOUTM1, 8, 1, 0),
 275 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_LOUTM1, 7, 1, 0),
 276 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_LOUTM2, 8, 1, 0),
 277 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_LOUTM2, 7, 1, 0),
 278 };
 279
 280 /* Right Mixer */
 281 static const struct snd_kcontrol_new wm8750_right_mixer_controls[] = {
 282 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_ROUTM1, 8, 1, 0),
 283 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_ROUTM1, 7, 1, 0),
 284 SOC_DAPM_SINGLE("Playback Switch", WM8750_ROUTM2, 8, 1, 0),
 285 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_ROUTM2, 7, 1, 0),
 286 };
 287
 288 /* Mono Mixer */
 289 static const struct snd_kcontrol_new wm8750_mono_mixer_controls[] = {
 290 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_MOUTM1, 8, 1, 0),
 291 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_MOUTM1, 7, 1, 0),
 292 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_MOUTM2, 8, 1, 0),
 293 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_MOUTM2, 7, 1, 0),
 294 };
 295
 296 /* Left Line Mux */
 297 static const struct snd_kcontrol_new wm8750_left_line_controls =
 298 SOC_DAPM_ENUM("Route", wm8750_enum[8]);
 299
 300 /* Right Line Mux */
 301 static const struct snd_kcontrol_new wm8750_right_line_controls =
 302 SOC_DAPM_ENUM("Route", wm8750_enum[9]);
 303
 304 /* Left PGA Mux */
 305 static const struct snd_kcontrol_new wm8750_left_pga_controls =
 306 SOC_DAPM_ENUM("Route", wm8750_enum[10]);
 307
 308 /* Right PGA Mux */
 309 static const struct snd_kcontrol_new wm8750_right_pga_controls =
 310 SOC_DAPM_ENUM("Route", wm8750_enum[11]);
 311
 312 /* Out 3 Mux */
 313 static const struct snd_kcontrol_new wm8750_out3_controls =
 314 SOC_DAPM_ENUM("Route", wm8750_enum[12]);
 315
 316 /* Differential Mux */
 317 static const struct snd_kcontrol_new wm8750_diffmux_controls =
 318 SOC_DAPM_ENUM("Route", wm8750_enum[13]);
 319
 320 /* Mono ADC Mux */
 321 static const struct snd_kcontrol_new wm8750_monomux_controls =
 322 SOC_DAPM_ENUM("Route", wm8750_enum[16]);
 323
 324 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 325         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 326                 &wm8750_left_mixer_controls[0],
 327                 ARRAY_SIZE(wm8750_left_mixer_controls)),
 328         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 329                 &wm8750_right_mixer_controls[0],
 330                 ARRAY_SIZE(wm8750_right_mixer_controls)),
 331         SND_SOC_DAPM_MIXER("Mono Mixer", WM8750_PWR2, 2, 0,
 332                 &wm8750_mono_mixer_controls[0],
 333                 ARRAY_SIZE(wm8750_mono_mixer_controls)),
 334
 335         SND_SOC_DAPM_PGA("Right Out 2", WM8750_PWR2, 3, 0, NULL, 0),
 336         SND_SOC_DAPM_PGA("Left Out 2", WM8750_PWR2, 4, 0, NULL, 0),
 337         SND_SOC_DAPM_PGA("Right Out 1", WM8750_PWR2, 5, 0, NULL, 0),
 338         SND_SOC_DAPM_PGA("Left Out 1", WM8750_PWR2, 6, 0, NULL, 0),
 339         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8750_PWR2, 7, 0),
 340         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8750_PWR2, 8, 0),
 341
 342         SND_SOC_DAPM_MICBIAS("Mic Bias", WM8750_PWR1, 1, 0),
 343         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8750_PWR1, 2, 0),
 344         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8750_PWR1, 3, 0),
 345
 346         SND_SOC_DAPM_MUX("Left PGA Mux", WM8750_PWR1, 5, 0,
 347                 &wm8750_left_pga_controls),
 348         SND_SOC_DAPM_MUX("Right PGA Mux", WM8750_PWR1, 4, 0,
 349                 &wm8750_right_pga_controls),
 350         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 351                 &wm8750_left_line_controls),
 352         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 353                 &wm8750_right_line_controls),
 354
 355         SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8750_out3_controls),
 356         SND_SOC_DAPM_PGA("Out 3", WM8750_PWR2, 1, 0, NULL, 0),
 357         SND_SOC_DAPM_PGA("Mono Out 1", WM8750_PWR2, 2, 0, NULL, 0),
 358
 359         SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
 360                 &wm8750_diffmux_controls),
 361         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 362                 &wm8750_monomux_controls),
 363         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 364                 &wm8750_monomux_controls),
 365
 366         SND_SOC_DAPM_OUTPUT("LOUT1"),
 367         SND_SOC_DAPM_OUTPUT("ROUT1"),
 368         SND_SOC_DAPM_OUTPUT("LOUT2"),
 369         SND_SOC_DAPM_OUTPUT("ROUT2"),
 370         SND_SOC_DAPM_OUTPUT("MONO"),
 371         SND_SOC_DAPM_OUTPUT("OUT3"),
 372
 373         SND_SOC_DAPM_INPUT("LINPUT1"),
 374         SND_SOC_DAPM_INPUT("LINPUT2"),
 375         SND_SOC_DAPM_INPUT("LINPUT3"),
 376         SND_SOC_DAPM_INPUT("RINPUT1"),
 377         SND_SOC_DAPM_INPUT("RINPUT2"),
 378         SND_SOC_DAPM_INPUT("RINPUT3"),
 379 };
 380
 381 static const struct snd_soc_dapm_route audio_map[] = {
 382         /* left mixer */
 383         {"Left Mixer", "Playback Switch", "Left DAC"},
 384         {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
 385         {"Left Mixer", "Right Playback Switch", "Right DAC"},
 386         {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
 387
 388         /* right mixer */
 389         {"Right Mixer", "Left Playback Switch", "Left DAC"},
 390         {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
 391         {"Right Mixer", "Playback Switch", "Right DAC"},
 392         {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
 393
 394         /* left out 1 */
 395         {"Left Out 1", NULL, "Left Mixer"},
 396         {"LOUT1", NULL, "Left Out 1"},
 397
 398         /* left out 2 */
 399         {"Left Out 2", NULL, "Left Mixer"},
 400         {"LOUT2", NULL, "Left Out 2"},
 401
 402         /* right out 1 */
 403         {"Right Out 1", NULL, "Right Mixer"},
 404         {"ROUT1", NULL, "Right Out 1"},
 405
 406         /* right out 2 */
 407         {"Right Out 2", NULL, "Right Mixer"},
 408         {"ROUT2", NULL, "Right Out 2"},
 409
 410         /* mono mixer */
 411         {"Mono Mixer", "Left Playback Switch", "Left DAC"},
 412         {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
 413         {"Mono Mixer", "Right Playback Switch", "Right DAC"},
 414         {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
 415
 416         /* mono out */
 417         {"Mono Out 1", NULL, "Mono Mixer"},
 418         {"MONO1", NULL, "Mono Out 1"},
 419
 420         /* out 3 */
 421         {"Out3 Mux", "VREF", "VREF"},
 422         {"Out3 Mux", "ROUT1 + Vol", "ROUT1"},
 423         {"Out3 Mux", "ROUT1", "Right Mixer"},
 424         {"Out3 Mux", "MonoOut", "MONO1"},
 425         {"Out 3", NULL, "Out3 Mux"},
 426         {"OUT3", NULL, "Out 3"},
 427
 428         /* Left Line Mux */
 429         {"Left Line Mux", "Line 1", "LINPUT1"},
 430         {"Left Line Mux", "Line 2", "LINPUT2"},
 431         {"Left Line Mux", "Line 3", "LINPUT3"},
 432         {"Left Line Mux", "PGA", "Left PGA Mux"},
 433         {"Left Line Mux", "Differential", "Differential Mux"},
 434
 435         /* Right Line Mux */
 436         {"Right Line Mux", "Line 1", "RINPUT1"},
 437         {"Right Line Mux", "Line 2", "RINPUT2"},
 438         {"Right Line Mux", "Line 3", "RINPUT3"},
 439         {"Right Line Mux", "PGA", "Right PGA Mux"},
 440         {"Right Line Mux", "Differential", "Differential Mux"},
 441
 442         /* Left PGA Mux */
 443         {"Left PGA Mux", "Line 1", "LINPUT1"},
 444         {"Left PGA Mux", "Line 2", "LINPUT2"},
 445         {"Left PGA Mux", "Line 3", "LINPUT3"},
 446         {"Left PGA Mux", "Differential", "Differential Mux"},
 447
 448         /* Right PGA Mux */
 449         {"Right PGA Mux", "Line 1", "RINPUT1"},
 450         {"Right PGA Mux", "Line 2", "RINPUT2"},
 451         {"Right PGA Mux", "Line 3", "RINPUT3"},
 452         {"Right PGA Mux", "Differential", "Differential Mux"},
 453
 454         /* Differential Mux */
 455         {"Differential Mux", "Line 1", "LINPUT1"},
 456         {"Differential Mux", "Line 1", "RINPUT1"},
 457         {"Differential Mux", "Line 2", "LINPUT2"},
 458         {"Differential Mux", "Line 2", "RINPUT2"},
 459
 460         /* Left ADC Mux */
 461         {"Left ADC Mux", "Stereo", "Left PGA Mux"},
 462         {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
 463         {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
 464
 465         /* Right ADC Mux */
 466         {"Right ADC Mux", "Stereo", "Right PGA Mux"},
 467         {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
 468         {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
 469
 470         /* ADC */
 471         {"Left ADC", NULL, "Left ADC Mux"},
 472         {"Right ADC", NULL, "Right ADC Mux"},
 473 };
 474
 475 static int wm8750_add_widgets(struct snd_soc_codec *codec)
 476 {
 477         snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
 478                                   ARRAY_SIZE(wm8750_dapm_widgets));
 479
 480         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 481
 482         snd_soc_dapm_new_widgets(codec);
 483         return 0;
 484 }
 485
 486 struct _coeff_div {
 487         u32 mclk;
 488         u32 rate;
 489         u16 fs;
 490         u8 sr:5;
 491         u8 usb:1;
 492 };
 493
 494 /* codec hifi mclk clock divider coefficients */
 495 static const struct _coeff_div coeff_div[] = {
 496         /* 8k */
 497         {12288000, 8000, 1536, 0x6, 0x0},
 498         {11289600, 8000, 1408, 0x16, 0x0},
 499         {18432000, 8000, 2304, 0x7, 0x0},
 500         {16934400, 8000, 2112, 0x17, 0x0},
 501         {12000000, 8000, 1500, 0x6, 0x1},
 502
 503         /* 11.025k */
 504         {11289600, 11025, 1024, 0x18, 0x0},
 505         {16934400, 11025, 1536, 0x19, 0x0},
 506         {12000000, 11025, 1088, 0x19, 0x1},
 507
 508         /* 16k */
 509         {12288000, 16000, 768, 0xa, 0x0},
 510         {18432000, 16000, 1152, 0xb, 0x0},
 511         {12000000, 16000, 750, 0xa, 0x1},
 512
 513         /* 22.05k */
 514         {11289600, 22050, 512, 0x1a, 0x0},
 515         {16934400, 22050, 768, 0x1b, 0x0},
 516         {12000000, 22050, 544, 0x1b, 0x1},
 517
 518         /* 32k */
 519         {12288000, 32000, 384, 0xc, 0x0},
 520         {18432000, 32000, 576, 0xd, 0x0},
 521         {12000000, 32000, 375, 0xa, 0x1},
 522
 523         /* 44.1k */
 524         {11289600, 44100, 256, 0x10, 0x0},
 525         {16934400, 44100, 384, 0x11, 0x0},
 526         {12000000, 44100, 272, 0x11, 0x1},
 527
 528         /* 48k */
 529         {12288000, 48000, 256, 0x0, 0x0},
 530         {18432000, 48000, 384, 0x1, 0x0},
 531         {12000000, 48000, 250, 0x0, 0x1},
 532
 533         /* 88.2k */
 534         {11289600, 88200, 128, 0x1e, 0x0},
 535         {16934400, 88200, 192, 0x1f, 0x0},
 536         {12000000, 88200, 136, 0x1f, 0x1},
 537
 538         /* 96k */
 539         {12288000, 96000, 128, 0xe, 0x0},
 540         {18432000, 96000, 192, 0xf, 0x0},
 541         {12000000, 96000, 125, 0xe, 0x1},
 542 };
 543
 544 static inline int get_coeff(int mclk, int rate)
 545 {
 546         int i;
 547
 548         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 549                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 550                         return i;
 551         }
 552
 553         printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n",
 554                 mclk, rate);
 555         return -EINVAL;
 556 }
 557
 558 static int wm8750_set_dai_sysclk(struct snd_soc_codec_dai *codec_dai,
 559                 int clk_id, unsigned int freq, int dir)
 560 {
 561         struct snd_soc_codec *codec = codec_dai->codec;
 562         struct wm8750_priv *wm8750 = codec->private_data;
 563
 564         switch (freq) {
 565         case 11289600:
 566         case 12000000:
 567         case 12288000:
 568         case 16934400:
 569         case 18432000:
 570                 wm8750->sysclk = freq;
 571                 return 0;
 572         }
 573         return -EINVAL;
 574 }
 575
 576 static int wm8750_set_dai_fmt(struct snd_soc_codec_dai *codec_dai,
 577                 unsigned int fmt)
 578 {
 579         struct snd_soc_codec *codec = codec_dai->codec;
 580         u16 iface = 0;
 581
 582         /* set master/slave audio interface */
 583         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 584         case SND_SOC_DAIFMT_CBM_CFM:
 585                 iface = 0x0040;
 586                 break;
 587         case SND_SOC_DAIFMT_CBS_CFS:
 588                 break;
 589         default:
 590                 return -EINVAL;
 591         }
 592
 593         /* interface format */
 594         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 595         case SND_SOC_DAIFMT_I2S:
 596                 iface |= 0x0002;
 597                 break;
 598         case SND_SOC_DAIFMT_RIGHT_J:
 599                 break;
 600         case SND_SOC_DAIFMT_LEFT_J:
 601                 iface |= 0x0001;
 602                 break;
 603         case SND_SOC_DAIFMT_DSP_A:
 604                 iface |= 0x0003;
 605                 break;
 606         case SND_SOC_DAIFMT_DSP_B:
 607                 iface |= 0x0013;
 608                 break;
 609         default:
 610                 return -EINVAL;
 611         }
 612
 613         /* clock inversion */
 614         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 615         case SND_SOC_DAIFMT_NB_NF:
 616                 break;
 617         case SND_SOC_DAIFMT_IB_IF:
 618                 iface |= 0x0090;
 619                 break;
 620         case SND_SOC_DAIFMT_IB_NF:
 621                 iface |= 0x0080;
 622                 break;
 623         case SND_SOC_DAIFMT_NB_IF:
 624                 iface |= 0x0010;
 625                 break;
 626         default:
 627                 return -EINVAL;
 628         }
 629
 630         wm8750_write(codec, WM8750_IFACE, iface);
 631         return 0;
 632 }
 633
 634 static int wm8750_pcm_hw_params(struct snd_pcm_substream *substream,
 635         struct snd_pcm_hw_params *params)
 636 {
 637         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 638         struct snd_soc_device *socdev = rtd->socdev;
 639         struct snd_soc_codec *codec = socdev->codec;
 640         struct wm8750_priv *wm8750 = codec->private_data;
 641         u16 iface = wm8750_read_reg_cache(codec, WM8750_IFACE) & 0x1f3;
 642         u16 srate = wm8750_read_reg_cache(codec, WM8750_SRATE) & 0x1c0;
 643         int coeff = get_coeff(wm8750->sysclk, params_rate(params));
 644
 645         /* bit size */
 646         switch (params_format(params)) {
 647         case SNDRV_PCM_FORMAT_S16_LE:
 648                 break;
 649         case SNDRV_PCM_FORMAT_S20_3LE:
 650                 iface |= 0x0004;
 651                 break;
 652         case SNDRV_PCM_FORMAT_S24_LE:
 653                 iface |= 0x0008;
 654                 break;
 655         case SNDRV_PCM_FORMAT_S32_LE:
 656                 iface |= 0x000c;
 657                 break;
 658         }
 659
 660         /* set iface & srate */
 661         wm8750_write(codec, WM8750_IFACE, iface);
 662         if (coeff >= 0)
 663                 wm8750_write(codec, WM8750_SRATE, srate |
 664                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 665
 666         return 0;
 667 }
 668
 669 static int wm8750_mute(struct snd_soc_codec_dai *dai, int mute)
 670 {
 671         struct snd_soc_codec *codec = dai->codec;
 672         u16 mute_reg = wm8750_read_reg_cache(codec, WM8750_ADCDAC) & 0xfff7;
 673
 674         if (mute)
 675                 wm8750_write(codec, WM8750_ADCDAC, mute_reg | 0x8);
 676         else
 677                 wm8750_write(codec, WM8750_ADCDAC, mute_reg);
 678         return 0;
 679 }
 680
 681 static int wm8750_set_bias_level(struct snd_soc_codec *codec,
 682                                  enum snd_soc_bias_level level)
 683 {
 684         u16 pwr_reg = wm8750_read_reg_cache(codec, WM8750_PWR1) & 0xfe3e;
 685
 686         switch (level) {
 687         case SND_SOC_BIAS_ON:
 688                 /* set vmid to 50k and unmute dac */
 689                 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x00c0);
 690                 break;
 691         case SND_SOC_BIAS_PREPARE:
 692                 /* set vmid to 5k for quick power up */
 693                 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x01c1);
 694                 break;
 695         case SND_SOC_BIAS_STANDBY:
 696                 /* mute dac and set vmid to 500k, enable VREF */
 697                 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x0141);
 698                 break;
 699         case SND_SOC_BIAS_OFF:
 700                 wm8750_write(codec, WM8750_PWR1, 0x0001);
 701                 break;
 702         }
 703         codec->bias_level = level;
 704         return 0;
 705 }
 706
 707 #define WM8750_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 708         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 709         SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 710
 711 #define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 712         SNDRV_PCM_FMTBIT_S24_LE)
 713
 714 struct snd_soc_codec_dai wm8750_dai = {
 715         .name = "WM8750",
 716         .playback = {
 717                 .stream_name = "Playback",
 718                 .channels_min = 1,
 719                 .channels_max = 2,
 720                 .rates = WM8750_RATES,
 721                 .formats = WM8750_FORMATS,},
 722         .capture = {
 723                 .stream_name = "Capture",
 724                 .channels_min = 1,
 725                 .channels_max = 2,
 726                 .rates = WM8750_RATES,
 727                 .formats = WM8750_FORMATS,},
 728         .ops = {
 729                 .hw_params = wm8750_pcm_hw_params,
 730         },
 731         .dai_ops = {
 732                 .digital_mute = wm8750_mute,
 733                 .set_fmt = wm8750_set_dai_fmt,
 734                 .set_sysclk = wm8750_set_dai_sysclk,
 735         },
 736 };
 737 EXPORT_SYMBOL_GPL(wm8750_dai);
 738
 739 static void wm8750_work(struct work_struct *work)
 740 {
 741         struct snd_soc_codec *codec =
 742                 container_of(work, struct snd_soc_codec, delayed_work.work);
 743         wm8750_set_bias_level(codec, codec->bias_level);
 744 }
 745
 746 static int wm8750_suspend(struct platform_device *pdev, pm_message_t state)
 747 {
 748         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 749         struct snd_soc_codec *codec = socdev->codec;
 750
 751         wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
 752         return 0;
 753 }
 754
 755 static int wm8750_resume(struct platform_device *pdev)
 756 {
 757         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 758         struct snd_soc_codec *codec = socdev->codec;
 759         int i;
 760         u8 data[2];
 761         u16 *cache = codec->reg_cache;
 762
 763         /* Sync reg_cache with the hardware */
 764         for (i = 0; i < ARRAY_SIZE(wm8750_reg); i++) {
 765                 if (i == WM8750_RESET)
 766                         continue;
 767                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 768                 data[1] = cache[i] & 0x00ff;
 769                 codec->hw_write(codec->control_data, data, 2);
 770         }
 771
 772         wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 773
 774         /* charge wm8750 caps */
 775         if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
 776                 wm8750_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
 777                 codec->bias_level = SND_SOC_BIAS_ON;
 778                 schedule_delayed_work(&codec->delayed_work,
 779                                         msecs_to_jiffies(1000));
 780         }
 781
 782         return 0;
 783 }
 784
 785 /*
 786  * initialise the WM8750 driver
 787  * register the mixer and dsp interfaces with the kernel
 788  */
 789 static int wm8750_init(struct snd_soc_device *socdev)
 790 {
 791         struct snd_soc_codec *codec = socdev->codec;
 792         int reg, ret = 0;
 793
 794         codec->name = "WM8750";
 795         codec->owner = THIS_MODULE;
 796         codec->read = wm8750_read_reg_cache;
 797         codec->write = wm8750_write;
 798         codec->set_bias_level = wm8750_set_bias_level;
 799         codec->dai = &wm8750_dai;
 800         codec->num_dai = 1;
 801         codec->reg_cache_size = sizeof(wm8750_reg);
 802         codec->reg_cache = kmemdup(wm8750_reg, sizeof(wm8750_reg), GFP_KERNEL);
 803         if (codec->reg_cache == NULL)
 804                 return -ENOMEM;
 805
 806         wm8750_reset(codec);
 807
 808         /* register pcms */
 809         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 810         if (ret < 0) {
 811                 printk(KERN_ERR "wm8750: failed to create pcms\n");
 812                 goto pcm_err;
 813         }
 814
 815         /* charge output caps */
 816         wm8750_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
 817         codec->bias_level = SND_SOC_BIAS_STANDBY;
 818         schedule_delayed_work(&codec->delayed_work, msecs_to_jiffies(1000));
 819
 820         /* set the update bits */
 821         reg = wm8750_read_reg_cache(codec, WM8750_LDAC);
 822         wm8750_write(codec, WM8750_LDAC, reg | 0x0100);
 823         reg = wm8750_read_reg_cache(codec, WM8750_RDAC);
 824         wm8750_write(codec, WM8750_RDAC, reg | 0x0100);
 825         reg = wm8750_read_reg_cache(codec, WM8750_LOUT1V);
 826         wm8750_write(codec, WM8750_LOUT1V, reg | 0x0100);
 827         reg = wm8750_read_reg_cache(codec, WM8750_ROUT1V);
 828         wm8750_write(codec, WM8750_ROUT1V, reg | 0x0100);
 829         reg = wm8750_read_reg_cache(codec, WM8750_LOUT2V);
 830         wm8750_write(codec, WM8750_LOUT2V, reg | 0x0100);
 831         reg = wm8750_read_reg_cache(codec, WM8750_ROUT2V);
 832         wm8750_write(codec, WM8750_ROUT2V, reg | 0x0100);
 833         reg = wm8750_read_reg_cache(codec, WM8750_LINVOL);
 834         wm8750_write(codec, WM8750_LINVOL, reg | 0x0100);
 835         reg = wm8750_read_reg_cache(codec, WM8750_RINVOL);
 836         wm8750_write(codec, WM8750_RINVOL, reg | 0x0100);
 837
 838         wm8750_add_controls(codec);
 839         wm8750_add_widgets(codec);
 840         ret = snd_soc_register_card(socdev);
 841         if (ret < 0) {
 842                 printk(KERN_ERR "wm8750: failed to register card\n");
 843                 goto card_err;
 844         }
 845         return ret;
 846
 847 card_err:
 848         snd_soc_free_pcms(socdev);
 849         snd_soc_dapm_free(socdev);
 850 pcm_err:
 851         kfree(codec->reg_cache);
 852         return ret;
 853 }
 854
 855 /* If the i2c layer weren't so broken, we could pass this kind of data
 856    around */
 857 static struct snd_soc_device *wm8750_socdev;
 858
 859 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 860
 861 /*
 862  * WM8731 2 wire address is determined by GPIO5
 863  * state during powerup.
 864  *    low  = 0x1a
 865  *    high = 0x1b
 866  */
 867 static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
 868
 869 /* Magic definition of all other variables and things */
 870 I2C_CLIENT_INSMOD;
 871
 872 static struct i2c_driver wm8750_i2c_driver;
 873 static struct i2c_client client_template;
 874
 875 static int wm8750_codec_probe(struct i2c_adapter *adap, int addr, int kind)
 876 {
 877         struct snd_soc_device *socdev = wm8750_socdev;
 878         struct wm8750_setup_data *setup = socdev->codec_data;
 879         struct snd_soc_codec *codec = socdev->codec;
 880         struct i2c_client *i2c;
 881         int ret;
 882
 883         if (addr != setup->i2c_address)
 884                 return -ENODEV;
 885
 886         client_template.adapter = adap;
 887         client_template.addr = addr;
 888
 889         i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
 890         if (i2c == NULL) {
 891                 kfree(codec);
 892                 return -ENOMEM;
 893         }
 894         i2c_set_clientdata(i2c, codec);
 895         codec->control_data = i2c;
 896
 897         ret = i2c_attach_client(i2c);
 898         if (ret < 0) {
 899                 err("failed to attach codec at addr %x\n", addr);
 900                 goto err;
 901         }
 902
 903         ret = wm8750_init(socdev);
 904         if (ret < 0) {
 905         err("failed to initialise WM8750\n");
 906                 goto err;
 907         }
 908         return ret;
 909
 910 err:
 911         kfree(codec);
 912         kfree(i2c);
 913         return ret;
 914 }
 915
 916 static int wm8750_i2c_detach(struct i2c_client *client)
 917 {
 918         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 919         i2c_detach_client(client);
 920         kfree(codec->reg_cache);
 921         kfree(client);
 922         return 0;
 923 }
 924
 925 static int wm8750_i2c_attach(struct i2c_adapter *adap)
 926 {
 927         return i2c_probe(adap, &addr_data, wm8750_codec_probe);
 928 }
 929
 930 /* corgi i2c codec control layer */
 931 static struct i2c_driver wm8750_i2c_driver = {
 932         .driver = {
 933                 .name = "WM8750 I2C Codec",
 934                 .owner = THIS_MODULE,
 935         },
 936         .id =             I2C_DRIVERID_WM8750,
 937         .attach_adapter = wm8750_i2c_attach,
 938         .detach_client =  wm8750_i2c_detach,
 939         .command =        NULL,
 940 };
 941
 942 static struct i2c_client client_template = {
 943         .name =   "WM8750",
 944         .driver = &wm8750_i2c_driver,
 945 };
 946 #endif
 947
 948 static int wm8750_probe(struct platform_device *pdev)
 949 {
 950         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 951         struct wm8750_setup_data *setup = socdev->codec_data;
 952         struct snd_soc_codec *codec;
 953         struct wm8750_priv *wm8750;
 954         int ret = 0;
 955
 956         info("WM8750 Audio Codec %s", WM8750_VERSION);
 957         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 958         if (codec == NULL)
 959                 return -ENOMEM;
 960
 961         wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
 962         if (wm8750 == NULL) {
 963                 kfree(codec);
 964                 return -ENOMEM;
 965         }
 966
 967         codec->private_data = wm8750;
 968         socdev->codec = codec;
 969         mutex_init(&codec->mutex);
 970         INIT_LIST_HEAD(&codec->dapm_widgets);
 971         INIT_LIST_HEAD(&codec->dapm_paths);
 972         wm8750_socdev = socdev;
 973         INIT_DELAYED_WORK(&codec->delayed_work, wm8750_work);
 974
 975 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 976         if (setup->i2c_address) {
 977                 normal_i2c[0] = setup->i2c_address;
 978                 codec->hw_write = (hw_write_t)i2c_master_send;
 979                 ret = i2c_add_driver(&wm8750_i2c_driver);
 980                 if (ret != 0)
 981                         printk(KERN_ERR "can't add i2c driver");
 982         }
 983 #else
 984                 /* Add other interfaces here */
 985 #endif
 986
 987         return ret;
 988 }
 989
 990 /*
 991  * This function forces any delayed work to be queued and run.
 992  */
 993 static int run_delayed_work(struct delayed_work *dwork)
 994 {
 995         int ret;
 996
 997         /* cancel any work waiting to be queued. */
 998         ret = cancel_delayed_work(dwork);
 999
1000         /* if there was any work waiting then we run it now and
1001          * wait for it's completion */
1002         if (ret) {
1003                 schedule_delayed_work(dwork, 0);
1004                 flush_scheduled_work();
1005         }
1006         return ret;
1007 }
1008
1009 /* power down chip */
1010 static int wm8750_remove(struct platform_device *pdev)
1011 {
1012         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1013         struct snd_soc_codec *codec = socdev->codec;
1014
1015         if (codec->control_data)
1016                 wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
1017         run_delayed_work(&codec->delayed_work);
1018         snd_soc_free_pcms(socdev);
1019         snd_soc_dapm_free(socdev);
1020 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1021         i2c_del_driver(&wm8750_i2c_driver);
1022 #endif
1023         kfree(codec->private_data);
1024         kfree(codec);
1025
1026         return 0;
1027 }
1028
1029 struct snd_soc_codec_device soc_codec_dev_wm8750 = {
1030         .probe =        wm8750_probe,
1031         .remove =       wm8750_remove,
1032         .suspend =      wm8750_suspend,
1033         .resume =       wm8750_resume,
1034 };
1035 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
1036
1037 MODULE_DESCRIPTION("ASoC WM8750 driver");
1038 MODULE_AUTHOR("Liam Girdwood");
1039 MODULE_LICENSE("GPL");