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 char *audio_map[][3] = {
 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         /* terminator */
 475         {NULL, NULL, NULL},
 476 };
 477
 478 static int wm8750_add_widgets(struct snd_soc_codec *codec)
 479 {
 480         int i;
 481
 482         for (i = 0; i < ARRAY_SIZE(wm8750_dapm_widgets); i++)
 483                 snd_soc_dapm_new_control(codec, &wm8750_dapm_widgets[i]);
 484
 485         /* set up audio path audio_mapnects */
 486         for (i = 0; audio_map[i][0] != NULL; i++)
 487                 snd_soc_dapm_connect_input(codec, audio_map[i][0],
 488                         audio_map[i][1], audio_map[i][2]);
 489
 490         snd_soc_dapm_new_widgets(codec);
 491         return 0;
 492 }
 493
 494 struct _coeff_div {
 495         u32 mclk;
 496         u32 rate;
 497         u16 fs;
 498         u8 sr:5;
 499         u8 usb:1;
 500 };
 501
 502 /* codec hifi mclk clock divider coefficients */
 503 static const struct _coeff_div coeff_div[] = {
 504         /* 8k */
 505         {12288000, 8000, 1536, 0x6, 0x0},
 506         {11289600, 8000, 1408, 0x16, 0x0},
 507         {18432000, 8000, 2304, 0x7, 0x0},
 508         {16934400, 8000, 2112, 0x17, 0x0},
 509         {12000000, 8000, 1500, 0x6, 0x1},
 510
 511         /* 11.025k */
 512         {11289600, 11025, 1024, 0x18, 0x0},
 513         {16934400, 11025, 1536, 0x19, 0x0},
 514         {12000000, 11025, 1088, 0x19, 0x1},
 515
 516         /* 16k */
 517         {12288000, 16000, 768, 0xa, 0x0},
 518         {18432000, 16000, 1152, 0xb, 0x0},
 519         {12000000, 16000, 750, 0xa, 0x1},
 520
 521         /* 22.05k */
 522         {11289600, 22050, 512, 0x1a, 0x0},
 523         {16934400, 22050, 768, 0x1b, 0x0},
 524         {12000000, 22050, 544, 0x1b, 0x1},
 525
 526         /* 32k */
 527         {12288000, 32000, 384, 0xc, 0x0},
 528         {18432000, 32000, 576, 0xd, 0x0},
 529         {12000000, 32000, 375, 0xa, 0x1},
 530
 531         /* 44.1k */
 532         {11289600, 44100, 256, 0x10, 0x0},
 533         {16934400, 44100, 384, 0x11, 0x0},
 534         {12000000, 44100, 272, 0x11, 0x1},
 535
 536         /* 48k */
 537         {12288000, 48000, 256, 0x0, 0x0},
 538         {18432000, 48000, 384, 0x1, 0x0},
 539         {12000000, 48000, 250, 0x0, 0x1},
 540
 541         /* 88.2k */
 542         {11289600, 88200, 128, 0x1e, 0x0},
 543         {16934400, 88200, 192, 0x1f, 0x0},
 544         {12000000, 88200, 136, 0x1f, 0x1},
 545
 546         /* 96k */
 547         {12288000, 96000, 128, 0xe, 0x0},
 548         {18432000, 96000, 192, 0xf, 0x0},
 549         {12000000, 96000, 125, 0xe, 0x1},
 550 };
 551
 552 static inline int get_coeff(int mclk, int rate)
 553 {
 554         int i;
 555
 556         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 557                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 558                         return i;
 559         }
 560
 561         printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n",
 562                 mclk, rate);
 563         return -EINVAL;
 564 }
 565
 566 static int wm8750_set_dai_sysclk(struct snd_soc_codec_dai *codec_dai,
 567                 int clk_id, unsigned int freq, int dir)
 568 {
 569         struct snd_soc_codec *codec = codec_dai->codec;
 570         struct wm8750_priv *wm8750 = codec->private_data;
 571
 572         switch (freq) {
 573         case 11289600:
 574         case 12000000:
 575         case 12288000:
 576         case 16934400:
 577         case 18432000:
 578                 wm8750->sysclk = freq;
 579                 return 0;
 580         }
 581         return -EINVAL;
 582 }
 583
 584 static int wm8750_set_dai_fmt(struct snd_soc_codec_dai *codec_dai,
 585                 unsigned int fmt)
 586 {
 587         struct snd_soc_codec *codec = codec_dai->codec;
 588         u16 iface = 0;
 589
 590         /* set master/slave audio interface */
 591         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 592         case SND_SOC_DAIFMT_CBM_CFM:
 593                 iface = 0x0040;
 594                 break;
 595         case SND_SOC_DAIFMT_CBS_CFS:
 596                 break;
 597         default:
 598                 return -EINVAL;
 599         }
 600
 601         /* interface format */
 602         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 603         case SND_SOC_DAIFMT_I2S:
 604                 iface |= 0x0002;
 605                 break;
 606         case SND_SOC_DAIFMT_RIGHT_J:
 607                 break;
 608         case SND_SOC_DAIFMT_LEFT_J:
 609                 iface |= 0x0001;
 610                 break;
 611         case SND_SOC_DAIFMT_DSP_A:
 612                 iface |= 0x0003;
 613                 break;
 614         case SND_SOC_DAIFMT_DSP_B:
 615                 iface |= 0x0013;
 616                 break;
 617         default:
 618                 return -EINVAL;
 619         }
 620
 621         /* clock inversion */
 622         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 623         case SND_SOC_DAIFMT_NB_NF:
 624                 break;
 625         case SND_SOC_DAIFMT_IB_IF:
 626                 iface |= 0x0090;
 627                 break;
 628         case SND_SOC_DAIFMT_IB_NF:
 629                 iface |= 0x0080;
 630                 break;
 631         case SND_SOC_DAIFMT_NB_IF:
 632                 iface |= 0x0010;
 633                 break;
 634         default:
 635                 return -EINVAL;
 636         }
 637
 638         wm8750_write(codec, WM8750_IFACE, iface);
 639         return 0;
 640 }
 641
 642 static int wm8750_pcm_hw_params(struct snd_pcm_substream *substream,
 643         struct snd_pcm_hw_params *params)
 644 {
 645         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 646         struct snd_soc_device *socdev = rtd->socdev;
 647         struct snd_soc_codec *codec = socdev->codec;
 648         struct wm8750_priv *wm8750 = codec->private_data;
 649         u16 iface = wm8750_read_reg_cache(codec, WM8750_IFACE) & 0x1f3;
 650         u16 srate = wm8750_read_reg_cache(codec, WM8750_SRATE) & 0x1c0;
 651         int coeff = get_coeff(wm8750->sysclk, params_rate(params));
 652
 653         /* bit size */
 654         switch (params_format(params)) {
 655         case SNDRV_PCM_FORMAT_S16_LE:
 656                 break;
 657         case SNDRV_PCM_FORMAT_S20_3LE:
 658                 iface |= 0x0004;
 659                 break;
 660         case SNDRV_PCM_FORMAT_S24_LE:
 661                 iface |= 0x0008;
 662                 break;
 663         case SNDRV_PCM_FORMAT_S32_LE:
 664                 iface |= 0x000c;
 665                 break;
 666         }
 667
 668         /* set iface & srate */
 669         wm8750_write(codec, WM8750_IFACE, iface);
 670         if (coeff >= 0)
 671                 wm8750_write(codec, WM8750_SRATE, srate |
 672                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 673
 674         return 0;
 675 }
 676
 677 static int wm8750_mute(struct snd_soc_codec_dai *dai, int mute)
 678 {
 679         struct snd_soc_codec *codec = dai->codec;
 680         u16 mute_reg = wm8750_read_reg_cache(codec, WM8750_ADCDAC) & 0xfff7;
 681
 682         if (mute)
 683                 wm8750_write(codec, WM8750_ADCDAC, mute_reg | 0x8);
 684         else
 685                 wm8750_write(codec, WM8750_ADCDAC, mute_reg);
 686         return 0;
 687 }
 688
 689 static int wm8750_set_bias_level(struct snd_soc_codec *codec,
 690                                  enum snd_soc_bias_level level)
 691 {
 692         u16 pwr_reg = wm8750_read_reg_cache(codec, WM8750_PWR1) & 0xfe3e;
 693
 694         switch (level) {
 695         case SND_SOC_BIAS_ON:
 696                 /* set vmid to 50k and unmute dac */
 697                 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x00c0);
 698                 break;
 699         case SND_SOC_BIAS_PREPARE:
 700                 /* set vmid to 5k for quick power up */
 701                 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x01c1);
 702                 break;
 703         case SND_SOC_BIAS_STANDBY:
 704                 /* mute dac and set vmid to 500k, enable VREF */
 705                 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x0141);
 706                 break;
 707         case SND_SOC_BIAS_OFF:
 708                 wm8750_write(codec, WM8750_PWR1, 0x0001);
 709                 break;
 710         }
 711         codec->bias_level = level;
 712         return 0;
 713 }
 714
 715 #define WM8750_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 716         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 717         SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 718
 719 #define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 720         SNDRV_PCM_FMTBIT_S24_LE)
 721
 722 struct snd_soc_codec_dai wm8750_dai = {
 723         .name = "WM8750",
 724         .playback = {
 725                 .stream_name = "Playback",
 726                 .channels_min = 1,
 727                 .channels_max = 2,
 728                 .rates = WM8750_RATES,
 729                 .formats = WM8750_FORMATS,},
 730         .capture = {
 731                 .stream_name = "Capture",
 732                 .channels_min = 1,
 733                 .channels_max = 2,
 734                 .rates = WM8750_RATES,
 735                 .formats = WM8750_FORMATS,},
 736         .ops = {
 737                 .hw_params = wm8750_pcm_hw_params,
 738         },
 739         .dai_ops = {
 740                 .digital_mute = wm8750_mute,
 741                 .set_fmt = wm8750_set_dai_fmt,
 742                 .set_sysclk = wm8750_set_dai_sysclk,
 743         },
 744 };
 745 EXPORT_SYMBOL_GPL(wm8750_dai);
 746
 747 static void wm8750_work(struct work_struct *work)
 748 {
 749         struct snd_soc_codec *codec =
 750                 container_of(work, struct snd_soc_codec, delayed_work.work);
 751         wm8750_set_bias_level(codec, codec->bias_level);
 752 }
 753
 754 static int wm8750_suspend(struct platform_device *pdev, pm_message_t state)
 755 {
 756         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 757         struct snd_soc_codec *codec = socdev->codec;
 758
 759         wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
 760         return 0;
 761 }
 762
 763 static int wm8750_resume(struct platform_device *pdev)
 764 {
 765         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 766         struct snd_soc_codec *codec = socdev->codec;
 767         int i;
 768         u8 data[2];
 769         u16 *cache = codec->reg_cache;
 770
 771         /* Sync reg_cache with the hardware */
 772         for (i = 0; i < ARRAY_SIZE(wm8750_reg); i++) {
 773                 if (i == WM8750_RESET)
 774                         continue;
 775                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 776                 data[1] = cache[i] & 0x00ff;
 777                 codec->hw_write(codec->control_data, data, 2);
 778         }
 779
 780         wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 781
 782         /* charge wm8750 caps */
 783         if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
 784                 wm8750_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
 785                 codec->bias_level = SND_SOC_BIAS_ON;
 786                 schedule_delayed_work(&codec->delayed_work,
 787                                         msecs_to_jiffies(1000));
 788         }
 789
 790         return 0;
 791 }
 792
 793 /*
 794  * initialise the WM8750 driver
 795  * register the mixer and dsp interfaces with the kernel
 796  */
 797 static int wm8750_init(struct snd_soc_device *socdev)
 798 {
 799         struct snd_soc_codec *codec = socdev->codec;
 800         int reg, ret = 0;
 801
 802         codec->name = "WM8750";
 803         codec->owner = THIS_MODULE;
 804         codec->read = wm8750_read_reg_cache;
 805         codec->write = wm8750_write;
 806         codec->set_bias_level = wm8750_set_bias_level;
 807         codec->dai = &wm8750_dai;
 808         codec->num_dai = 1;
 809         codec->reg_cache_size = sizeof(wm8750_reg);
 810         codec->reg_cache = kmemdup(wm8750_reg, sizeof(wm8750_reg), GFP_KERNEL);
 811         if (codec->reg_cache == NULL)
 812                 return -ENOMEM;
 813
 814         wm8750_reset(codec);
 815
 816         /* register pcms */
 817         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 818         if (ret < 0) {
 819                 printk(KERN_ERR "wm8750: failed to create pcms\n");
 820                 goto pcm_err;
 821         }
 822
 823         /* charge output caps */
 824         wm8750_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
 825         codec->bias_level = SND_SOC_BIAS_STANDBY;
 826         schedule_delayed_work(&codec->delayed_work, msecs_to_jiffies(1000));
 827
 828         /* set the update bits */
 829         reg = wm8750_read_reg_cache(codec, WM8750_LDAC);
 830         wm8750_write(codec, WM8750_LDAC, reg | 0x0100);
 831         reg = wm8750_read_reg_cache(codec, WM8750_RDAC);
 832         wm8750_write(codec, WM8750_RDAC, reg | 0x0100);
 833         reg = wm8750_read_reg_cache(codec, WM8750_LOUT1V);
 834         wm8750_write(codec, WM8750_LOUT1V, reg | 0x0100);
 835         reg = wm8750_read_reg_cache(codec, WM8750_ROUT1V);
 836         wm8750_write(codec, WM8750_ROUT1V, reg | 0x0100);
 837         reg = wm8750_read_reg_cache(codec, WM8750_LOUT2V);
 838         wm8750_write(codec, WM8750_LOUT2V, reg | 0x0100);
 839         reg = wm8750_read_reg_cache(codec, WM8750_ROUT2V);
 840         wm8750_write(codec, WM8750_ROUT2V, reg | 0x0100);
 841         reg = wm8750_read_reg_cache(codec, WM8750_LINVOL);
 842         wm8750_write(codec, WM8750_LINVOL, reg | 0x0100);
 843         reg = wm8750_read_reg_cache(codec, WM8750_RINVOL);
 844         wm8750_write(codec, WM8750_RINVOL, reg | 0x0100);
 845
 846         wm8750_add_controls(codec);
 847         wm8750_add_widgets(codec);
 848         ret = snd_soc_register_card(socdev);
 849         if (ret < 0) {
 850                 printk(KERN_ERR "wm8750: failed to register card\n");
 851                 goto card_err;
 852         }
 853         return ret;
 854
 855 card_err:
 856         snd_soc_free_pcms(socdev);
 857         snd_soc_dapm_free(socdev);
 858 pcm_err:
 859         kfree(codec->reg_cache);
 860         return ret;
 861 }
 862
 863 /* If the i2c layer weren't so broken, we could pass this kind of data
 864    around */
 865 static struct snd_soc_device *wm8750_socdev;
 866
 867 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 868
 869 /*
 870  * WM8731 2 wire address is determined by GPIO5
 871  * state during powerup.
 872  *    low  = 0x1a
 873  *    high = 0x1b
 874  */
 875 static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
 876
 877 /* Magic definition of all other variables and things */
 878 I2C_CLIENT_INSMOD;
 879
 880 static struct i2c_driver wm8750_i2c_driver;
 881 static struct i2c_client client_template;
 882
 883 static int wm8750_codec_probe(struct i2c_adapter *adap, int addr, int kind)
 884 {
 885         struct snd_soc_device *socdev = wm8750_socdev;
 886         struct wm8750_setup_data *setup = socdev->codec_data;
 887         struct snd_soc_codec *codec = socdev->codec;
 888         struct i2c_client *i2c;
 889         int ret;
 890
 891         if (addr != setup->i2c_address)
 892                 return -ENODEV;
 893
 894         client_template.adapter = adap;
 895         client_template.addr = addr;
 896
 897         i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
 898         if (i2c == NULL) {
 899                 kfree(codec);
 900                 return -ENOMEM;
 901         }
 902         i2c_set_clientdata(i2c, codec);
 903         codec->control_data = i2c;
 904
 905         ret = i2c_attach_client(i2c);
 906         if (ret < 0) {
 907                 err("failed to attach codec at addr %x\n", addr);
 908                 goto err;
 909         }
 910
 911         ret = wm8750_init(socdev);
 912         if (ret < 0) {
 913         err("failed to initialise WM8750\n");
 914                 goto err;
 915         }
 916         return ret;
 917
 918 err:
 919         kfree(codec);
 920         kfree(i2c);
 921         return ret;
 922 }
 923
 924 static int wm8750_i2c_detach(struct i2c_client *client)
 925 {
 926         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 927         i2c_detach_client(client);
 928         kfree(codec->reg_cache);
 929         kfree(client);
 930         return 0;
 931 }
 932
 933 static int wm8750_i2c_attach(struct i2c_adapter *adap)
 934 {
 935         return i2c_probe(adap, &addr_data, wm8750_codec_probe);
 936 }
 937
 938 /* corgi i2c codec control layer */
 939 static struct i2c_driver wm8750_i2c_driver = {
 940         .driver = {
 941                 .name = "WM8750 I2C Codec",
 942                 .owner = THIS_MODULE,
 943         },
 944         .id =             I2C_DRIVERID_WM8750,
 945         .attach_adapter = wm8750_i2c_attach,
 946         .detach_client =  wm8750_i2c_detach,
 947         .command =        NULL,
 948 };
 949
 950 static struct i2c_client client_template = {
 951         .name =   "WM8750",
 952         .driver = &wm8750_i2c_driver,
 953 };
 954 #endif
 955
 956 static int wm8750_probe(struct platform_device *pdev)
 957 {
 958         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 959         struct wm8750_setup_data *setup = socdev->codec_data;
 960         struct snd_soc_codec *codec;
 961         struct wm8750_priv *wm8750;
 962         int ret = 0;
 963
 964         info("WM8750 Audio Codec %s", WM8750_VERSION);
 965         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 966         if (codec == NULL)
 967                 return -ENOMEM;
 968
 969         wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
 970         if (wm8750 == NULL) {
 971                 kfree(codec);
 972                 return -ENOMEM;
 973         }
 974
 975         codec->private_data = wm8750;
 976         socdev->codec = codec;
 977         mutex_init(&codec->mutex);
 978         INIT_LIST_HEAD(&codec->dapm_widgets);
 979         INIT_LIST_HEAD(&codec->dapm_paths);
 980         wm8750_socdev = socdev;
 981         INIT_DELAYED_WORK(&codec->delayed_work, wm8750_work);
 982
 983 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 984         if (setup->i2c_address) {
 985                 normal_i2c[0] = setup->i2c_address;
 986                 codec->hw_write = (hw_write_t)i2c_master_send;
 987                 ret = i2c_add_driver(&wm8750_i2c_driver);
 988                 if (ret != 0)
 989                         printk(KERN_ERR "can't add i2c driver");
 990         }
 991 #else
 992                 /* Add other interfaces here */
 993 #endif
 994
 995         return ret;
 996 }
 997
 998 /*
 999  * This function forces any delayed work to be queued and run.
1000  */
1001 static int run_delayed_work(struct delayed_work *dwork)
1002 {
1003         int ret;
1004
1005         /* cancel any work waiting to be queued. */
1006         ret = cancel_delayed_work(dwork);
1007
1008         /* if there was any work waiting then we run it now and
1009          * wait for it's completion */
1010         if (ret) {
1011                 schedule_delayed_work(dwork, 0);
1012                 flush_scheduled_work();
1013         }
1014         return ret;
1015 }
1016
1017 /* power down chip */
1018 static int wm8750_remove(struct platform_device *pdev)
1019 {
1020         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1021         struct snd_soc_codec *codec = socdev->codec;
1022
1023         if (codec->control_data)
1024                 wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
1025         run_delayed_work(&codec->delayed_work);
1026         snd_soc_free_pcms(socdev);
1027         snd_soc_dapm_free(socdev);
1028 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1029         i2c_del_driver(&wm8750_i2c_driver);
1030 #endif
1031         kfree(codec->private_data);
1032         kfree(codec);
1033
1034         return 0;
1035 }
1036
1037 struct snd_soc_codec_device soc_codec_dev_wm8750 = {
1038         .probe =        wm8750_probe,
1039         .remove =       wm8750_remove,
1040         .suspend =      wm8750_suspend,
1041         .resume =       wm8750_resume,
1042 };
1043 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
1044
1045 MODULE_DESCRIPTION("ASoC WM8750 driver");
1046 MODULE_AUTHOR("Liam Girdwood");
1047 MODULE_LICENSE("GPL");