release/src-rt/linux/linux-2.6/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/driver.h>
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/pcm_params.h>
  26 #include <sound/soc.h>
  27 #include <sound/soc-dapm.h>
  28 #include <sound/initval.h>
  29
  30 #include "wm8750.h"
  31
  32 #define AUDIO_NAME "WM8750"
  33 #define WM8750_VERSION "0.12"
  34
  35 /*
  36  * Debug
  37  */
  38
  39 #define WM8750_DEBUG 0
  40
  41 #ifdef WM8750_DEBUG
  42 #define dbg(format, arg...) \
  43         printk(KERN_DEBUG AUDIO_NAME ": " format "\n" , ## arg)
  44 #else
  45 #define dbg(format, arg...) do {} while (0)
  46 #endif
  47 #define err(format, arg...) \
  48         printk(KERN_ERR AUDIO_NAME ": " format "\n" , ## arg)
  49 #define info(format, arg...) \
  50         printk(KERN_INFO AUDIO_NAME ": " format "\n" , ## arg)
  51 #define warn(format, arg...) \
  52         printk(KERN_WARNING AUDIO_NAME ": " format "\n" , ## arg)
  53
  54 /* codec private data */
  55 struct wm8750_priv {
  56         unsigned int sysclk;
  57 };
  58
  59 /*
  60  * wm8750 register cache
  61  * We can't read the WM8750 register space when we
  62  * are using 2 wire for device control, so we cache them instead.
  63  */
  64 static const u16 wm8750_reg[] = {
  65         0x0097, 0x0097, 0x0079, 0x0079,  /*  0 */
  66         0x0000, 0x0008, 0x0000, 0x000a,  /*  4 */
  67         0x0000, 0x0000, 0x00ff, 0x00ff,  /*  8 */
  68         0x000f, 0x000f, 0x0000, 0x0000,  /* 12 */
  69         0x0000, 0x007b, 0x0000, 0x0032,  /* 16 */
  70         0x0000, 0x00c3, 0x00c3, 0x00c0,  /* 20 */
  71         0x0000, 0x0000, 0x0000, 0x0000,  /* 24 */
  72         0x0000, 0x0000, 0x0000, 0x0000,  /* 28 */
  73         0x0000, 0x0000, 0x0050, 0x0050,  /* 32 */
  74         0x0050, 0x0050, 0x0050, 0x0050,  /* 36 */
  75         0x0079, 0x0079, 0x0079,          /* 40 */
  76 };
  77
  78 /*
  79  * read wm8750 register cache
  80  */
  81 static inline unsigned int wm8750_read_reg_cache(struct snd_soc_codec *codec,
  82         unsigned int reg)
  83 {
  84         u16 *cache = codec->reg_cache;
  85         if (reg > WM8750_CACHE_REGNUM)
  86                 return -1;
  87         return cache[reg];
  88 }
  89
  90 /*
  91  * write wm8750 register cache
  92  */
  93 static inline void wm8750_write_reg_cache(struct snd_soc_codec *codec,
  94         unsigned int reg, unsigned int value)
  95 {
  96         u16 *cache = codec->reg_cache;
  97         if (reg > WM8750_CACHE_REGNUM)
  98                 return;
  99         cache[reg] = value;
 100 }
 101
 102 static int wm8750_write(struct snd_soc_codec *codec, unsigned int reg,
 103         unsigned int value)
 104 {
 105         u8 data[2];
 106
 107         /* data is
 108          *   D15..D9 WM8753 register offset
 109          *   D8...D0 register data
 110          */
 111         data[0] = (reg << 1) | ((value >> 8) & 0x0001);
 112         data[1] = value & 0x00ff;
 113
 114         wm8750_write_reg_cache (codec, reg, value);
 115         if (codec->hw_write(codec->control_data, data, 2) == 2)
 116                 return 0;
 117         else
 118                 return -EIO;
 119 }
 120
 121 #define wm8750_reset(c) wm8750_write(c, WM8750_RESET, 0)
 122
 123 /*
 124  * WM8750 Controls
 125  */
 126 static const char *wm8750_bass[] = {"Linear Control", "Adaptive Boost"};
 127 static const char *wm8750_bass_filter[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
 128 static const char *wm8750_treble[] = {"8kHz", "4kHz"};
 129 static const char *wm8750_3d_lc[] = {"200Hz", "500Hz"};
 130 static const char *wm8750_3d_uc[] = {"2.2kHz", "1.5kHz"};
 131 static const char *wm8750_3d_func[] = {"Capture", "Playback"};
 132 static const char *wm8750_alc_func[] = {"Off", "Right", "Left", "Stereo"};
 133 static const char *wm8750_ng_type[] = {"Constant PGA Gain",
 134         "Mute ADC Output"};
 135 static const char *wm8750_line_mux[] = {"Line 1", "Line 2", "Line 3", "PGA",
 136         "Differential"};
 137 static const char *wm8750_pga_sel[] = {"Line 1", "Line 2", "Line 3",
 138         "Differential"};
 139 static const char *wm8750_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut",
 140         "ROUT1"};
 141 static const char *wm8750_diff_sel[] = {"Line 1", "Line 2"};
 142 static const char *wm8750_adcpol[] = {"Normal", "L Invert", "R Invert",
 143         "L + R Invert"};
 144 static const char *wm8750_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
 145 static const char *wm8750_mono_mux[] = {"Stereo", "Mono (Left)",
 146         "Mono (Right)", "Digital Mono"};
 147
 148 static const struct soc_enum wm8750_enum[] = {
 149 SOC_ENUM_SINGLE(WM8750_BASS, 7, 2, wm8750_bass),
 150 SOC_ENUM_SINGLE(WM8750_BASS, 6, 2, wm8750_bass_filter),
 151 SOC_ENUM_SINGLE(WM8750_TREBLE, 6, 2, wm8750_treble),
 152 SOC_ENUM_SINGLE(WM8750_3D, 5, 2, wm8750_3d_lc),
 153 SOC_ENUM_SINGLE(WM8750_3D, 6, 2, wm8750_3d_uc),
 154 SOC_ENUM_SINGLE(WM8750_3D, 7, 2, wm8750_3d_func),
 155 SOC_ENUM_SINGLE(WM8750_ALC1, 7, 4, wm8750_alc_func),
 156 SOC_ENUM_SINGLE(WM8750_NGATE, 1, 2, wm8750_ng_type),
 157 SOC_ENUM_SINGLE(WM8750_LOUTM1, 0, 5, wm8750_line_mux),
 158 SOC_ENUM_SINGLE(WM8750_ROUTM1, 0, 5, wm8750_line_mux),
 159 SOC_ENUM_SINGLE(WM8750_LADCIN, 6, 4, wm8750_pga_sel), /* 10 */
 160 SOC_ENUM_SINGLE(WM8750_RADCIN, 6, 4, wm8750_pga_sel),
 161 SOC_ENUM_SINGLE(WM8750_ADCTL2, 7, 4, wm8750_out3),
 162 SOC_ENUM_SINGLE(WM8750_ADCIN, 8, 2, wm8750_diff_sel),
 163 SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol),
 164 SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph),
 165 SOC_ENUM_SINGLE(WM8750_ADCIN, 6, 4, wm8750_mono_mux), /* 16 */
 166
 167 };
 168
 169 static const struct snd_kcontrol_new wm8750_snd_controls[] = {
 170
 171 SOC_DOUBLE_R("Capture Volume", WM8750_LINVOL, WM8750_RINVOL, 0, 63, 0),
 172 SOC_DOUBLE_R("Capture ZC Switch", WM8750_LINVOL, WM8750_RINVOL, 6, 1, 0),
 173 SOC_DOUBLE_R("Capture Switch", WM8750_LINVOL, WM8750_RINVOL, 7, 1, 1),
 174
 175 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8750_LOUT1V,
 176         WM8750_ROUT1V, 7, 1, 0),
 177 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8750_LOUT2V,
 178         WM8750_ROUT2V, 7, 1, 0),
 179
 180 SOC_ENUM("Playback De-emphasis", wm8750_enum[15]),
 181
 182 SOC_ENUM("Capture Polarity", wm8750_enum[14]),
 183 SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0),
 184 SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0),
 185
 186 SOC_DOUBLE_R("PCM Volume", WM8750_LDAC, WM8750_RDAC, 0, 255, 0),
 187
 188 SOC_ENUM("Bass Boost", wm8750_enum[0]),
 189 SOC_ENUM("Bass Filter", wm8750_enum[1]),
 190 SOC_SINGLE("Bass Volume", WM8750_BASS, 0, 15, 1),
 191
 192 SOC_SINGLE("Treble Volume", WM8750_TREBLE, 0, 15, 0),
 193 SOC_ENUM("Treble Cut-off", wm8750_enum[2]),
 194
 195 SOC_SINGLE("3D Switch", WM8750_3D, 0, 1, 0),
 196 SOC_SINGLE("3D Volume", WM8750_3D, 1, 15, 0),
 197 SOC_ENUM("3D Lower Cut-off", wm8750_enum[3]),
 198 SOC_ENUM("3D Upper Cut-off", wm8750_enum[4]),
 199 SOC_ENUM("3D Mode", wm8750_enum[5]),
 200
 201 SOC_SINGLE("ALC Capture Target Volume", WM8750_ALC1, 0, 7, 0),
 202 SOC_SINGLE("ALC Capture Max Volume", WM8750_ALC1, 4, 7, 0),
 203 SOC_ENUM("ALC Capture Function", wm8750_enum[6]),
 204 SOC_SINGLE("ALC Capture ZC Switch", WM8750_ALC2, 7, 1, 0),
 205 SOC_SINGLE("ALC Capture Hold Time", WM8750_ALC2, 0, 15, 0),
 206 SOC_SINGLE("ALC Capture Decay Time", WM8750_ALC3, 4, 15, 0),
 207 SOC_SINGLE("ALC Capture Attack Time", WM8750_ALC3, 0, 15, 0),
 208 SOC_SINGLE("ALC Capture NG Threshold", WM8750_NGATE, 3, 31, 0),
 209 SOC_ENUM("ALC Capture NG Type", wm8750_enum[4]),
 210 SOC_SINGLE("ALC Capture NG Switch", WM8750_NGATE, 0, 1, 0),
 211
 212 SOC_SINGLE("Left ADC Capture Volume", WM8750_LADC, 0, 255, 0),
 213 SOC_SINGLE("Right ADC Capture Volume", WM8750_RADC, 0, 255, 0),
 214
 215 SOC_SINGLE("ZC Timeout Switch", WM8750_ADCTL1, 0, 1, 0),
 216 SOC_SINGLE("Playback Invert Switch", WM8750_ADCTL1, 1, 1, 0),
 217
 218 SOC_SINGLE("Right Speaker Playback Invert Switch", WM8750_ADCTL2, 4, 1, 0),
 219
 220 /* Unimplemented */
 221 /* ADCDAC Bit 0 - ADCHPD */
 222 /* ADCDAC Bit 4 - HPOR */
 223 /* ADCTL1 Bit 2,3 - DATSEL */
 224 /* ADCTL1 Bit 4,5 - DMONOMIX */
 225 /* ADCTL1 Bit 6,7 - VSEL */
 226 /* ADCTL2 Bit 2 - LRCM */
 227 /* ADCTL2 Bit 3 - TRI */
 228 /* ADCTL3 Bit 5 - HPFLREN */
 229 /* ADCTL3 Bit 6 - VROI */
 230 /* ADCTL3 Bit 7,8 - ADCLRM */
 231 /* ADCIN Bit 4 - LDCM */
 232 /* ADCIN Bit 5 - RDCM */
 233
 234 SOC_DOUBLE_R("Mic Boost", WM8750_LADCIN, WM8750_RADCIN, 4, 3, 0),
 235
 236 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8750_LOUTM1,
 237         WM8750_LOUTM2, 4, 7, 1),
 238 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8750_ROUTM1,
 239         WM8750_ROUTM2, 4, 7, 1),
 240 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8750_MOUTM1,
 241         WM8750_MOUTM2, 4, 7, 1),
 242
 243 SOC_SINGLE("Mono Playback ZC Switch", WM8750_MOUTV, 7, 1, 0),
 244
 245 SOC_DOUBLE_R("Headphone Playback Volume", WM8750_LOUT1V, WM8750_ROUT1V,
 246         0, 127, 0),
 247 SOC_DOUBLE_R("Speaker Playback Volume", WM8750_LOUT2V, WM8750_ROUT2V,
 248         0, 127, 0),
 249
 250 SOC_SINGLE("Mono Playback Volume", WM8750_MOUTV, 0, 127, 0),
 251
 252 };
 253
 254 /* add non dapm controls */
 255 static int wm8750_add_controls(struct snd_soc_codec *codec)
 256 {
 257         int err, i;
 258
 259         for (i = 0; i < ARRAY_SIZE(wm8750_snd_controls); i++) {
 260                 err = snd_ctl_add(codec->card,
 261                                 snd_soc_cnew(&wm8750_snd_controls[i],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
 486         /* set up audio path audio_mapnects */
 487         for(i = 0; audio_map[i][0] != NULL; i++) {
 488                 snd_soc_dapm_connect_input(codec, audio_map[i][0],
 489                         audio_map[i][1], audio_map[i][2]);
 490         }
 491
 492         snd_soc_dapm_new_widgets(codec);
 493         return 0;
 494 }
 495
 496 struct _coeff_div {
 497         u32 mclk;
 498         u32 rate;
 499         u16 fs;
 500         u8 sr:5;
 501         u8 usb:1;
 502 };
 503
 504 /* codec hifi mclk clock divider coefficients */
 505 static const struct _coeff_div coeff_div[] = {
 506         /* 8k */
 507         {12288000, 8000, 1536, 0x6, 0x0},
 508         {11289600, 8000, 1408, 0x16, 0x0},
 509         {18432000, 8000, 2304, 0x7, 0x0},
 510         {16934400, 8000, 2112, 0x17, 0x0},
 511         {12000000, 8000, 1500, 0x6, 0x1},
 512
 513         /* 11.025k */
 514         {11289600, 11025, 1024, 0x18, 0x0},
 515         {16934400, 11025, 1536, 0x19, 0x0},
 516         {12000000, 11025, 1088, 0x19, 0x1},
 517
 518         /* 16k */
 519         {12288000, 16000, 768, 0xa, 0x0},
 520         {18432000, 16000, 1152, 0xb, 0x0},
 521         {12000000, 16000, 750, 0xa, 0x1},
 522
 523         /* 22.05k */
 524         {11289600, 22050, 512, 0x1a, 0x0},
 525         {16934400, 22050, 768, 0x1b, 0x0},
 526         {12000000, 22050, 544, 0x1b, 0x1},
 527
 528         /* 32k */
 529         {12288000, 32000, 384, 0xc, 0x0},
 530         {18432000, 32000, 576, 0xd, 0x0},
 531         {12000000, 32000, 375, 0xa, 0x1},
 532
 533         /* 44.1k */
 534         {11289600, 44100, 256, 0x10, 0x0},
 535         {16934400, 44100, 384, 0x11, 0x0},
 536         {12000000, 44100, 272, 0x11, 0x1},
 537
 538         /* 48k */
 539         {12288000, 48000, 256, 0x0, 0x0},
 540         {18432000, 48000, 384, 0x1, 0x0},
 541         {12000000, 48000, 250, 0x0, 0x1},
 542
 543         /* 88.2k */
 544         {11289600, 88200, 128, 0x1e, 0x0},
 545         {16934400, 88200, 192, 0x1f, 0x0},
 546         {12000000, 88200, 136, 0x1f, 0x1},
 547
 548         /* 96k */
 549         {12288000, 96000, 128, 0xe, 0x0},
 550         {18432000, 96000, 192, 0xf, 0x0},
 551         {12000000, 96000, 125, 0xe, 0x1},
 552 };
 553
 554 static inline int get_coeff(int mclk, int rate)
 555 {
 556         int i;
 557
 558         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 559                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 560                         return i;
 561         }
 562
 563         printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n",
 564                 mclk, rate);
 565         return -EINVAL;
 566 }
 567
 568 static int wm8750_set_dai_sysclk(struct snd_soc_codec_dai *codec_dai,
 569                 int clk_id, unsigned int freq, int dir)
 570 {
 571         struct snd_soc_codec *codec = codec_dai->codec;
 572         struct wm8750_priv *wm8750 = codec->private_data;
 573
 574         switch (freq) {
 575         case 11289600:
 576         case 12000000:
 577         case 12288000:
 578         case 16934400:
 579         case 18432000:
 580                 wm8750->sysclk = freq;
 581                 return 0;
 582         }
 583         return -EINVAL;
 584 }
 585
 586 static int wm8750_set_dai_fmt(struct snd_soc_codec_dai *codec_dai,
 587                 unsigned int fmt)
 588 {
 589         struct snd_soc_codec *codec = codec_dai->codec;
 590         u16 iface = 0;
 591
 592         /* set master/slave audio interface */
 593         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 594         case SND_SOC_DAIFMT_CBM_CFM:
 595                 iface = 0x0040;
 596                 break;
 597         case SND_SOC_DAIFMT_CBS_CFS:
 598                 break;
 599         default:
 600                 return -EINVAL;
 601         }
 602
 603         /* interface format */
 604         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 605         case SND_SOC_DAIFMT_I2S:
 606                 iface |= 0x0002;
 607                 break;
 608         case SND_SOC_DAIFMT_RIGHT_J:
 609                 break;
 610         case SND_SOC_DAIFMT_LEFT_J:
 611                 iface |= 0x0001;
 612                 break;
 613         case SND_SOC_DAIFMT_DSP_A:
 614                 iface |= 0x0003;
 615                 break;
 616         case SND_SOC_DAIFMT_DSP_B:
 617                 iface |= 0x0013;
 618                 break;
 619         default:
 620                 return -EINVAL;
 621         }
 622
 623         /* clock inversion */
 624         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 625         case SND_SOC_DAIFMT_NB_NF:
 626                 break;
 627         case SND_SOC_DAIFMT_IB_IF:
 628                 iface |= 0x0090;
 629                 break;
 630         case SND_SOC_DAIFMT_IB_NF:
 631                 iface |= 0x0080;
 632                 break;
 633         case SND_SOC_DAIFMT_NB_IF:
 634                 iface |= 0x0010;
 635                 break;
 636         default:
 637                 return -EINVAL;
 638         }
 639
 640         wm8750_write(codec, WM8750_IFACE, iface);
 641         return 0;
 642 }
 643
 644 static int wm8750_pcm_hw_params(struct snd_pcm_substream *substream,
 645         struct snd_pcm_hw_params *params)
 646 {
 647         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 648         struct snd_soc_device *socdev = rtd->socdev;
 649         struct snd_soc_codec *codec = socdev->codec;
 650         struct wm8750_priv *wm8750 = codec->private_data;
 651         u16 iface = wm8750_read_reg_cache(codec, WM8750_IFACE) & 0x1f3;
 652         u16 srate = wm8750_read_reg_cache(codec, WM8750_SRATE) & 0x1c0;
 653         int coeff = get_coeff(wm8750->sysclk, params_rate(params));
 654
 655         /* bit size */
 656         switch (params_format(params)) {
 657         case SNDRV_PCM_FORMAT_S16_LE:
 658                 break;
 659         case SNDRV_PCM_FORMAT_S20_3LE:
 660                 iface |= 0x0004;
 661                 break;
 662         case SNDRV_PCM_FORMAT_S24_LE:
 663                 iface |= 0x0008;
 664                 break;
 665         case SNDRV_PCM_FORMAT_S32_LE:
 666                 iface |= 0x000c;
 667                 break;
 668         }
 669
 670         /* set iface & srate */
 671         wm8750_write(codec, WM8750_IFACE, iface);
 672         if (coeff >= 0)
 673                 wm8750_write(codec, WM8750_SRATE, srate |
 674                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 675
 676         return 0;
 677 }
 678
 679 static int wm8750_mute(struct snd_soc_codec_dai *dai, int mute)
 680 {
 681         struct snd_soc_codec *codec = dai->codec;
 682         u16 mute_reg = wm8750_read_reg_cache(codec, WM8750_ADCDAC) & 0xfff7;
 683
 684         if (mute)
 685                 wm8750_write(codec, WM8750_ADCDAC, mute_reg | 0x8);
 686         else
 687                 wm8750_write(codec, WM8750_ADCDAC, mute_reg);
 688         return 0;
 689 }
 690
 691 static int wm8750_dapm_event(struct snd_soc_codec *codec, int event)
 692 {
 693         u16 pwr_reg = wm8750_read_reg_cache(codec, WM8750_PWR1) & 0xfe3e;
 694
 695         switch (event) {
 696         case SNDRV_CTL_POWER_D0: /* full On */
 697                 /* Turn On LDAC/RDAC, LOUT2/ROUT2 */
 698                 wm8750_write(codec, WM8750_PWR2, 0x198);
 699                 /* set vmid to 50k and unmute dac */
 700                 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x00c0);
 701                 break;
 702         case SNDRV_CTL_POWER_D1: /* partial On */
 703         case SNDRV_CTL_POWER_D2: /* partial On */
 704                 /* set vmid to 5k for quick power up */
 705                 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x01c1);
 706                 break;
 707         case SNDRV_CTL_POWER_D3hot: /* Off, with power */
 708                 /* mute dac and set vmid to 500k, enable VREF */
 709                 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x0141);
 710                 break;
 711         case SNDRV_CTL_POWER_D3cold: /* Off, without power */
 712                 wm8750_write(codec, WM8750_PWR1, 0x0001);
 713                 wm8750_write(codec, WM8750_PWR2, 0x0);
 714                 break;
 715         }
 716         codec->dapm_state = event;
 717         return 0;
 718 }
 719
 720 #define WM8750_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 721                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 722                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 723
 724 #define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 725         SNDRV_PCM_FMTBIT_S24_LE)
 726
 727 struct snd_soc_codec_dai wm8750_dai = {
 728         .name = "WM8750",
 729         .playback = {
 730                 .stream_name = "Playback",
 731                 .channels_min = 1,
 732                 .channels_max = 2,
 733                 .rates = WM8750_RATES,
 734                 .formats = WM8750_FORMATS,},
 735         .capture = {
 736                 .stream_name = "Capture",
 737                 .channels_min = 1,
 738                 .channels_max = 2,
 739                 .rates = WM8750_RATES,
 740                 .formats = WM8750_FORMATS,},
 741         .ops = {
 742                 .hw_params = wm8750_pcm_hw_params,
 743         },
 744         .dai_ops = {
 745                 .digital_mute = wm8750_mute,
 746                 .set_fmt = wm8750_set_dai_fmt,
 747                 .set_sysclk = wm8750_set_dai_sysclk,
 748         },
 749 };
 750 EXPORT_SYMBOL_GPL(wm8750_dai);
 751
 752 static void wm8750_work(struct work_struct *work)
 753 {
 754         struct snd_soc_codec *codec =
 755                 container_of(work, struct snd_soc_codec, delayed_work.work);
 756         wm8750_dapm_event(codec, codec->dapm_state);
 757 }
 758
 759 static int wm8750_suspend(struct platform_device *pdev, pm_message_t state)
 760 {
 761         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 762         struct snd_soc_codec *codec = socdev->codec;
 763
 764         wm8750_dapm_event(codec, SNDRV_CTL_POWER_D3cold);
 765         return 0;
 766 }
 767
 768 static int wm8750_resume(struct platform_device *pdev)
 769 {
 770         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 771         struct snd_soc_codec *codec = socdev->codec;
 772         int i;
 773         u8 data[2];
 774         u16 *cache = codec->reg_cache;
 775
 776         /* Sync reg_cache with the hardware */
 777         for (i = 0; i < ARRAY_SIZE(wm8750_reg); i++) {
 778                 if (i == WM8750_RESET)
 779                         continue;
 780                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 781                 data[1] = cache[i] & 0x00ff;
 782                 codec->hw_write(codec->control_data, data, 2);
 783         }
 784
 785         wm8750_dapm_event(codec, SNDRV_CTL_POWER_D3hot);
 786
 787         /* charge wm8750 caps */
 788         if (codec->suspend_dapm_state == SNDRV_CTL_POWER_D0) {
 789                 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D2);
 790                 codec->dapm_state = SNDRV_CTL_POWER_D0;
 791                 schedule_delayed_work(&codec->delayed_work, msecs_to_jiffies(1000));
 792         }
 793
 794         return 0;
 795 }
 796
 797 /*
 798  * initialise the WM8750 driver
 799  * register the mixer and dsp interfaces with the kernel
 800  */
 801 static int wm8750_init(struct snd_soc_device *socdev)
 802 {
 803         struct snd_soc_codec *codec = socdev->codec;
 804         int reg, ret = 0;
 805
 806         codec->name = "WM8750";
 807         codec->owner = THIS_MODULE;
 808         codec->read = wm8750_read_reg_cache;
 809         codec->write = wm8750_write;
 810         codec->dapm_event = wm8750_dapm_event;
 811         codec->dai = &wm8750_dai;
 812         codec->num_dai = 1;
 813         codec->reg_cache_size = sizeof(wm8750_reg);
 814         codec->reg_cache = kmemdup(wm8750_reg, sizeof(wm8750_reg), GFP_KERNEL);
 815         if (codec->reg_cache == NULL)
 816                 return -ENOMEM;
 817
 818         wm8750_reset(codec);
 819
 820         /* register pcms */
 821         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 822         if (ret < 0) {
 823                 printk(KERN_ERR "wm8750: failed to create pcms\n");
 824                 goto pcm_err;
 825         }
 826
 827         /* charge output caps */
 828         wm8750_dapm_event(codec, SNDRV_CTL_POWER_D2);
 829         codec->dapm_state = SNDRV_CTL_POWER_D3hot;
 830         schedule_delayed_work(&codec->delayed_work, msecs_to_jiffies(1000));
 831
 832         /* set the update bits */
 833         reg = wm8750_read_reg_cache(codec, WM8750_LDAC);
 834         wm8750_write(codec, WM8750_LDAC, reg | 0x0100);
 835         reg = wm8750_read_reg_cache(codec, WM8750_RDAC);
 836         wm8750_write(codec, WM8750_RDAC, reg | 0x0100);
 837         reg = wm8750_read_reg_cache(codec, WM8750_LOUT1V);
 838         wm8750_write(codec, WM8750_LOUT1V, reg | 0x0100);
 839         reg = wm8750_read_reg_cache(codec, WM8750_ROUT1V);
 840         wm8750_write(codec, WM8750_ROUT1V, reg | 0x0100);
 841         /* Read LOUT2V/ROUT2V and strip volume bits */
 842         reg = wm8750_read_reg_cache(codec, WM8750_LOUT2V) & 0x180;
 843         wm8750_write(codec, WM8750_LOUT2V, reg | 0x0150);
 844         reg = wm8750_read_reg_cache(codec, WM8750_ROUT2V) & 0x180;
 845         wm8750_write(codec, WM8750_ROUT2V, reg | 0x0150);
 846
 847         /* Enable L & R Digital Inputs for the L & R Outputs of the mixer */
 848         reg = wm8750_read_reg_cache(codec, WM8750_LOUTM1);
 849         wm8750_write(codec, WM8750_LOUTM1, reg | 0x0100);
 850         reg = wm8750_read_reg_cache(codec, WM8750_ROUTM1);
 851         wm8750_write(codec, WM8750_ROUTM2, reg | 0x0100);
 852
 853         reg = wm8750_read_reg_cache(codec, WM8750_LINVOL);
 854         wm8750_write(codec, WM8750_LINVOL, reg | 0x0100);
 855         reg = wm8750_read_reg_cache(codec, WM8750_RINVOL);
 856         wm8750_write(codec, WM8750_RINVOL, reg | 0x0100);
 857
 858         wm8750_add_controls(codec);
 859         wm8750_add_widgets(codec);
 860         ret = snd_soc_register_card(socdev);
 861         if (ret < 0) {
 862                 printk(KERN_ERR "wm8750: failed to register card\n");
 863                 goto card_err;
 864         }
 865         return ret;
 866
 867 card_err:
 868         snd_soc_free_pcms(socdev);
 869         snd_soc_dapm_free(socdev);
 870 pcm_err:
 871         kfree(codec->reg_cache);
 872         return ret;
 873 }
 874
 875 /* If the i2c layer weren't so broken, we could pass this kind of data
 876    around */
 877 static struct snd_soc_device *wm8750_socdev;
 878
 879 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 880
 881 /*
 882  * WM8731 2 wire address is determined by GPIO5
 883  * state during powerup.
 884  *    low  = 0x1a
 885  *    high = 0x1b
 886  */
 887 static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
 888
 889 /* Magic definition of all other variables and things */
 890 I2C_CLIENT_INSMOD;
 891
 892 static struct i2c_driver wm8750_i2c_driver;
 893 static struct i2c_client client_template;
 894
 895 static int wm8750_codec_probe(struct i2c_adapter *adap, int addr, int kind)
 896 {
 897         struct snd_soc_device *socdev = wm8750_socdev;
 898         struct wm8750_setup_data *setup = socdev->codec_data;
 899         struct snd_soc_codec *codec = socdev->codec;
 900         struct i2c_client *i2c;
 901         int ret;
 902
 903         if (addr != setup->i2c_address)
 904                 return -ENODEV;
 905
 906         client_template.adapter = adap;
 907         client_template.addr = addr;
 908
 909         i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
 910         if (i2c == NULL) {
 911                 kfree(codec);
 912                 return -ENOMEM;
 913         }
 914         i2c_set_clientdata(i2c, codec);
 915         codec->control_data = i2c;
 916
 917         ret = i2c_attach_client(i2c);
 918         if (ret < 0) {
 919                 err("failed to attach codec at addr %x\n", addr);
 920                 goto err;
 921         }
 922
 923         ret = wm8750_init(socdev);
 924         if (ret < 0) {
 925         err("failed to initialise WM8750\n");
 926                 goto err;
 927         }
 928         return ret;
 929
 930 err:
 931         kfree(codec);
 932         kfree(i2c);
 933         return ret;
 934 }
 935
 936 static int wm8750_i2c_detach(struct i2c_client *client)
 937 {
 938         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 939         i2c_detach_client(client);
 940         kfree(codec->reg_cache);
 941         kfree(client);
 942         return 0;
 943 }
 944
 945 static int wm8750_i2c_attach(struct i2c_adapter *adap)
 946 {
 947         return i2c_probe(adap, &addr_data, wm8750_codec_probe);
 948 }
 949
 950 /* corgi i2c codec control layer */
 951 static struct i2c_driver wm8750_i2c_driver = {
 952         .driver = {
 953                 .name = "WM8750 I2C Codec",
 954                 .owner = THIS_MODULE,
 955         },
 956         .id =             I2C_DRIVERID_WM8750,
 957         .attach_adapter = wm8750_i2c_attach,
 958         .detach_client =  wm8750_i2c_detach,
 959         .command =        NULL,
 960 };
 961
 962 static struct i2c_client client_template = {
 963         .name =   "WM8750",
 964         .driver = &wm8750_i2c_driver,
 965 };
 966 #endif
 967
 968 static int wm8750_probe(struct platform_device *pdev)
 969 {
 970         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 971         struct wm8750_setup_data *setup = socdev->codec_data;
 972         struct snd_soc_codec *codec;
 973         struct wm8750_priv *wm8750;
 974         int ret = 0;
 975
 976         info("WM8750 Audio Codec %s", WM8750_VERSION);
 977         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 978         if (codec == NULL)
 979                 return -ENOMEM;
 980
 981         wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
 982         if (wm8750 == NULL) {
 983                 kfree(codec);
 984                 return -ENOMEM;
 985         }
 986
 987         codec->private_data = wm8750;
 988         socdev->codec = codec;
 989         mutex_init(&codec->mutex);
 990         INIT_LIST_HEAD(&codec->dapm_widgets);
 991         INIT_LIST_HEAD(&codec->dapm_paths);
 992         wm8750_socdev = socdev;
 993         INIT_DELAYED_WORK(&codec->delayed_work, wm8750_work);
 994
 995 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 996         if (setup->i2c_address) {
 997                 normal_i2c[0] = setup->i2c_address;
 998                 codec->hw_write = (hw_write_t)i2c_master_send;
 999                 ret = i2c_add_driver(&wm8750_i2c_driver);
1000                 if (ret != 0)
1001                         printk(KERN_ERR "can't add i2c driver");
1002         }
1003 #else
1004                 /* Add other interfaces here */
1005 #endif
1006
1007         return ret;
1008 }
1009
1010 /*
1011  * This function forces any delayed work to be queued and run.
1012  */
1013 static int run_delayed_work(struct delayed_work *dwork)
1014 {
1015         int ret;
1016
1017         /* cancel any work waiting to be queued. */
1018         ret = cancel_delayed_work(dwork);
1019
1020         /* if there was any work waiting then we run it now and
1021          * wait for it's completion */
1022         if (ret) {
1023                 schedule_delayed_work(dwork, 0);
1024                 flush_scheduled_work();
1025         }
1026         return ret;
1027 }
1028
1029 /* power down chip */
1030 static int wm8750_remove(struct platform_device *pdev)
1031 {
1032         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1033         struct snd_soc_codec *codec = socdev->codec;
1034
1035         if (codec->control_data)
1036                 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D3cold);
1037         run_delayed_work(&codec->delayed_work);
1038         snd_soc_free_pcms(socdev);
1039         snd_soc_dapm_free(socdev);
1040 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
1041         i2c_del_driver(&wm8750_i2c_driver);
1042 #endif
1043         kfree(codec->private_data);
1044         kfree(codec);
1045
1046         return 0;
1047 }
1048
1049 struct snd_soc_codec_device soc_codec_dev_wm8750 = {
1050         .probe =        wm8750_probe,
1051         .remove =       wm8750_remove,
1052         .suspend =      wm8750_suspend,
1053         .resume =       wm8750_resume,
1054 };
1055
1056 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
1057
1058 MODULE_DESCRIPTION("ASoC WM8750 driver");
1059 MODULE_AUTHOR("Liam Girdwood");
1060 MODULE_LICENSE("GPL");