sound/soc/codecs/wm8971.c

   1 /*
   2  * wm8971.c  --  WM8971 ALSA SoC Audio driver
   3  *
   4  * Copyright 2005 Lab126, Inc.
   5  *
   6  * Author: Kenneth Kiraly <kiraly@lab126.com>
   7  *
   8  * Based on wm8753.c by Liam Girdwood
   9  *
  10  *  This program is free software; you can redistribute  it and/or modify it
  11  *  under  the terms of  the GNU General  Public License as published by the
  12  *  Free Software Foundation;  either version 2 of the  License, or (at your
  13  *  option) any later version.
  14  */
  15
  16 #include <linux/module.h>
  17 #include <linux/moduleparam.h>
  18 #include <linux/init.h>
  19 #include <linux/delay.h>
  20 #include <linux/pm.h>
  21 #include <linux/i2c.h>
  22 #include <linux/slab.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/initval.h>
  28
  29 #include "wm8971.h"
  30
  31 #define WM8971_REG_COUNT                43
  32
  33 static struct workqueue_struct *wm8971_workq = NULL;
  34
  35 /* codec private data */
  36 struct wm8971_priv {
  37         enum snd_soc_control_type control_type;
  38         unsigned int sysclk;
  39 };
  40
  41 /*
  42  * wm8971 register cache
  43  * We can't read the WM8971 register space when we
  44  * are using 2 wire for device control, so we cache them instead.
  45  */
  46 static const u16 wm8971_reg[] = {
  47         0x0097, 0x0097, 0x0079, 0x0079,  /*  0 */
  48         0x0000, 0x0008, 0x0000, 0x000a,  /*  4 */
  49         0x0000, 0x0000, 0x00ff, 0x00ff,  /*  8 */
  50         0x000f, 0x000f, 0x0000, 0x0000,  /* 12 */
  51         0x0000, 0x007b, 0x0000, 0x0032,  /* 16 */
  52         0x0000, 0x00c3, 0x00c3, 0x00c0,  /* 20 */
  53         0x0000, 0x0000, 0x0000, 0x0000,  /* 24 */
  54         0x0000, 0x0000, 0x0000, 0x0000,  /* 28 */
  55         0x0000, 0x0000, 0x0050, 0x0050,  /* 32 */
  56         0x0050, 0x0050, 0x0050, 0x0050,  /* 36 */
  57         0x0079, 0x0079, 0x0079,          /* 40 */
  58 };
  59
  60 #define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0)
  61
  62 /* WM8971 Controls */
  63 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
  64 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
  65         "200Hz @ 48kHz" };
  66 static const char *wm8971_treble[] = { "8kHz", "4kHz" };
  67 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
  68 static const char *wm8971_ng_type[] = { "Constant PGA Gain",
  69         "Mute ADC Output" };
  70 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
  71 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
  72         "Mono (Right)", "Digital Mono"};
  73 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
  74 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
  75         "Differential"};
  76 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
  77         "Differential"};
  78 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
  79 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
  80 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
  81         "L + R Invert"};
  82
  83 static const struct soc_enum wm8971_enum[] = {
  84         SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass),        /* 0 */
  85         SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
  86         SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
  87         SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
  88         SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type),    /* 4 */
  89         SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
  90         SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
  91         SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
  92         SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
  93         SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
  94         SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
  95         SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
  96         SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol),    /* 12 */
  97         SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
  98 };
  99
 100 static const struct snd_kcontrol_new wm8971_snd_controls[] = {
 101         SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
 102         SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
 103                      6, 1, 0),
 104         SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
 105
 106         SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
 107                 WM8971_ROUT1V, 7, 1, 0),
 108         SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
 109                 WM8971_ROUT2V, 7, 1, 0),
 110         SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
 111
 112         SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
 113
 114         SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
 115                 WM8971_LOUTM2, 4, 7, 1),
 116         SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
 117                 WM8971_ROUTM2, 4, 7, 1),
 118         SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
 119                 WM8971_MOUTM2, 4, 7, 1),
 120
 121         SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
 122                 WM8971_ROUT1V, 0, 127, 0),
 123         SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
 124                 WM8971_ROUT2V, 0, 127, 0),
 125
 126         SOC_ENUM("Bass Boost", wm8971_enum[0]),
 127         SOC_ENUM("Bass Filter", wm8971_enum[1]),
 128         SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
 129
 130         SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
 131         SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
 132
 133         SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
 134
 135         SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
 136         SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
 137
 138         SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
 139         SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
 140         SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
 141         SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
 142         SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
 143         SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
 144         SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
 145         SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
 146         SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
 147         SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
 148
 149         SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
 150         SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
 151
 152         SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
 153         SOC_ENUM("Playback Function", wm8971_enum[6]),
 154         SOC_ENUM("Playback Phase", wm8971_enum[7]),
 155
 156         SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
 157 };
 158
 159 /*
 160  * DAPM Controls
 161  */
 162
 163 /* Left Mixer */
 164 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
 165 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
 166 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
 167 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
 168 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
 169 };
 170
 171 /* Right Mixer */
 172 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
 173 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
 174 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
 175 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
 176 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
 177 };
 178
 179 /* Mono Mixer */
 180 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
 181 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
 182 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
 183 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
 184 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
 185 };
 186
 187 /* Left Line Mux */
 188 static const struct snd_kcontrol_new wm8971_left_line_controls =
 189 SOC_DAPM_ENUM("Route", wm8971_enum[8]);
 190
 191 /* Right Line Mux */
 192 static const struct snd_kcontrol_new wm8971_right_line_controls =
 193 SOC_DAPM_ENUM("Route", wm8971_enum[9]);
 194
 195 /* Left PGA Mux */
 196 static const struct snd_kcontrol_new wm8971_left_pga_controls =
 197 SOC_DAPM_ENUM("Route", wm8971_enum[10]);
 198
 199 /* Right PGA Mux */
 200 static const struct snd_kcontrol_new wm8971_right_pga_controls =
 201 SOC_DAPM_ENUM("Route", wm8971_enum[11]);
 202
 203 /* Mono ADC Mux */
 204 static const struct snd_kcontrol_new wm8971_monomux_controls =
 205 SOC_DAPM_ENUM("Route", wm8971_enum[13]);
 206
 207 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
 208         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 209                 &wm8971_left_mixer_controls[0],
 210                 ARRAY_SIZE(wm8971_left_mixer_controls)),
 211         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 212                 &wm8971_right_mixer_controls[0],
 213                 ARRAY_SIZE(wm8971_right_mixer_controls)),
 214         SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
 215                 &wm8971_mono_mixer_controls[0],
 216                 ARRAY_SIZE(wm8971_mono_mixer_controls)),
 217
 218         SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
 219         SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
 220         SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
 221         SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
 222         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
 223         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
 224         SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
 225
 226         SND_SOC_DAPM_SUPPLY("Mic Bias", WM8971_PWR1, 1, 0, NULL, 0),
 227         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
 228         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
 229
 230         SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
 231                 &wm8971_left_pga_controls),
 232         SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
 233                 &wm8971_right_pga_controls),
 234         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 235                 &wm8971_left_line_controls),
 236         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 237                 &wm8971_right_line_controls),
 238
 239         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 240                 &wm8971_monomux_controls),
 241         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 242                 &wm8971_monomux_controls),
 243
 244         SND_SOC_DAPM_OUTPUT("LOUT1"),
 245         SND_SOC_DAPM_OUTPUT("ROUT1"),
 246         SND_SOC_DAPM_OUTPUT("LOUT2"),
 247         SND_SOC_DAPM_OUTPUT("ROUT2"),
 248         SND_SOC_DAPM_OUTPUT("MONO"),
 249
 250         SND_SOC_DAPM_INPUT("LINPUT1"),
 251         SND_SOC_DAPM_INPUT("RINPUT1"),
 252         SND_SOC_DAPM_INPUT("MIC"),
 253 };
 254
 255 static const struct snd_soc_dapm_route wm8971_dapm_routes[] = {
 256         /* left mixer */
 257         {"Left Mixer", "Playback Switch", "Left DAC"},
 258         {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
 259         {"Left Mixer", "Right Playback Switch", "Right DAC"},
 260         {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
 261
 262         /* right mixer */
 263         {"Right Mixer", "Left Playback Switch", "Left DAC"},
 264         {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
 265         {"Right Mixer", "Playback Switch", "Right DAC"},
 266         {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
 267
 268         /* left out 1 */
 269         {"Left Out 1", NULL, "Left Mixer"},
 270         {"LOUT1", NULL, "Left Out 1"},
 271
 272         /* left out 2 */
 273         {"Left Out 2", NULL, "Left Mixer"},
 274         {"LOUT2", NULL, "Left Out 2"},
 275
 276         /* right out 1 */
 277         {"Right Out 1", NULL, "Right Mixer"},
 278         {"ROUT1", NULL, "Right Out 1"},
 279
 280         /* right out 2 */
 281         {"Right Out 2", NULL, "Right Mixer"},
 282         {"ROUT2", NULL, "Right Out 2"},
 283
 284         /* mono mixer */
 285         {"Mono Mixer", "Left Playback Switch", "Left DAC"},
 286         {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
 287         {"Mono Mixer", "Right Playback Switch", "Right DAC"},
 288         {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
 289
 290         /* mono out */
 291         {"Mono Out", NULL, "Mono Mixer"},
 292         {"MONO1", NULL, "Mono Out"},
 293
 294         /* Left Line Mux */
 295         {"Left Line Mux", "Line", "LINPUT1"},
 296         {"Left Line Mux", "PGA", "Left PGA Mux"},
 297         {"Left Line Mux", "Differential", "Differential Mux"},
 298
 299         /* Right Line Mux */
 300         {"Right Line Mux", "Line", "RINPUT1"},
 301         {"Right Line Mux", "Mic", "MIC"},
 302         {"Right Line Mux", "PGA", "Right PGA Mux"},
 303         {"Right Line Mux", "Differential", "Differential Mux"},
 304
 305         /* Left PGA Mux */
 306         {"Left PGA Mux", "Line", "LINPUT1"},
 307         {"Left PGA Mux", "Differential", "Differential Mux"},
 308
 309         /* Right PGA Mux */
 310         {"Right PGA Mux", "Line", "RINPUT1"},
 311         {"Right PGA Mux", "Differential", "Differential Mux"},
 312
 313         /* Differential Mux */
 314         {"Differential Mux", "Line", "LINPUT1"},
 315         {"Differential Mux", "Line", "RINPUT1"},
 316
 317         /* Left ADC Mux */
 318         {"Left ADC Mux", "Stereo", "Left PGA Mux"},
 319         {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
 320         {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
 321
 322         /* Right ADC Mux */
 323         {"Right ADC Mux", "Stereo", "Right PGA Mux"},
 324         {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
 325         {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
 326
 327         /* ADC */
 328         {"Left ADC", NULL, "Left ADC Mux"},
 329         {"Right ADC", NULL, "Right ADC Mux"},
 330 };
 331
 332 struct _coeff_div {
 333         u32 mclk;
 334         u32 rate;
 335         u16 fs;
 336         u8 sr:5;
 337         u8 usb:1;
 338 };
 339
 340 /* codec hifi mclk clock divider coefficients */
 341 static const struct _coeff_div coeff_div[] = {
 342         /* 8k */
 343         {12288000, 8000, 1536, 0x6, 0x0},
 344         {11289600, 8000, 1408, 0x16, 0x0},
 345         {18432000, 8000, 2304, 0x7, 0x0},
 346         {16934400, 8000, 2112, 0x17, 0x0},
 347         {12000000, 8000, 1500, 0x6, 0x1},
 348
 349         /* 11.025k */
 350         {11289600, 11025, 1024, 0x18, 0x0},
 351         {16934400, 11025, 1536, 0x19, 0x0},
 352         {12000000, 11025, 1088, 0x19, 0x1},
 353
 354         /* 16k */
 355         {12288000, 16000, 768, 0xa, 0x0},
 356         {18432000, 16000, 1152, 0xb, 0x0},
 357         {12000000, 16000, 750, 0xa, 0x1},
 358
 359         /* 22.05k */
 360         {11289600, 22050, 512, 0x1a, 0x0},
 361         {16934400, 22050, 768, 0x1b, 0x0},
 362         {12000000, 22050, 544, 0x1b, 0x1},
 363
 364         /* 32k */
 365         {12288000, 32000, 384, 0xc, 0x0},
 366         {18432000, 32000, 576, 0xd, 0x0},
 367         {12000000, 32000, 375, 0xa, 0x1},
 368
 369         /* 44.1k */
 370         {11289600, 44100, 256, 0x10, 0x0},
 371         {16934400, 44100, 384, 0x11, 0x0},
 372         {12000000, 44100, 272, 0x11, 0x1},
 373
 374         /* 48k */
 375         {12288000, 48000, 256, 0x0, 0x0},
 376         {18432000, 48000, 384, 0x1, 0x0},
 377         {12000000, 48000, 250, 0x0, 0x1},
 378
 379         /* 88.2k */
 380         {11289600, 88200, 128, 0x1e, 0x0},
 381         {16934400, 88200, 192, 0x1f, 0x0},
 382         {12000000, 88200, 136, 0x1f, 0x1},
 383
 384         /* 96k */
 385         {12288000, 96000, 128, 0xe, 0x0},
 386         {18432000, 96000, 192, 0xf, 0x0},
 387         {12000000, 96000, 125, 0xe, 0x1},
 388 };
 389
 390 static int get_coeff(int mclk, int rate)
 391 {
 392         int i;
 393
 394         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 395                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 396                         return i;
 397         }
 398         return -EINVAL;
 399 }
 400
 401 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 402                 int clk_id, unsigned int freq, int dir)
 403 {
 404         struct snd_soc_codec *codec = codec_dai->codec;
 405         struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
 406
 407         switch (freq) {
 408         case 11289600:
 409         case 12000000:
 410         case 12288000:
 411         case 16934400:
 412         case 18432000:
 413                 wm8971->sysclk = freq;
 414                 return 0;
 415         }
 416         return -EINVAL;
 417 }
 418
 419 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
 420                 unsigned int fmt)
 421 {
 422         struct snd_soc_codec *codec = codec_dai->codec;
 423         u16 iface = 0;
 424
 425         /* set master/slave audio interface */
 426         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 427         case SND_SOC_DAIFMT_CBM_CFM:
 428                 iface = 0x0040;
 429                 break;
 430         case SND_SOC_DAIFMT_CBS_CFS:
 431                 break;
 432         default:
 433                 return -EINVAL;
 434         }
 435
 436         /* interface format */
 437         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 438         case SND_SOC_DAIFMT_I2S:
 439                 iface |= 0x0002;
 440                 break;
 441         case SND_SOC_DAIFMT_RIGHT_J:
 442                 break;
 443         case SND_SOC_DAIFMT_LEFT_J:
 444                 iface |= 0x0001;
 445                 break;
 446         case SND_SOC_DAIFMT_DSP_A:
 447                 iface |= 0x0003;
 448                 break;
 449         case SND_SOC_DAIFMT_DSP_B:
 450                 iface |= 0x0013;
 451                 break;
 452         default:
 453                 return -EINVAL;
 454         }
 455
 456         /* clock inversion */
 457         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 458         case SND_SOC_DAIFMT_NB_NF:
 459                 break;
 460         case SND_SOC_DAIFMT_IB_IF:
 461                 iface |= 0x0090;
 462                 break;
 463         case SND_SOC_DAIFMT_IB_NF:
 464                 iface |= 0x0080;
 465                 break;
 466         case SND_SOC_DAIFMT_NB_IF:
 467                 iface |= 0x0010;
 468                 break;
 469         default:
 470                 return -EINVAL;
 471         }
 472
 473         snd_soc_write(codec, WM8971_IFACE, iface);
 474         return 0;
 475 }
 476
 477 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
 478         struct snd_pcm_hw_params *params,
 479         struct snd_soc_dai *dai)
 480 {
 481         struct snd_soc_codec *codec = dai->codec;
 482         struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
 483         u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
 484         u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
 485         int coeff = get_coeff(wm8971->sysclk, params_rate(params));
 486
 487         /* bit size */
 488         switch (params_format(params)) {
 489         case SNDRV_PCM_FORMAT_S16_LE:
 490                 break;
 491         case SNDRV_PCM_FORMAT_S20_3LE:
 492                 iface |= 0x0004;
 493                 break;
 494         case SNDRV_PCM_FORMAT_S24_LE:
 495                 iface |= 0x0008;
 496                 break;
 497         case SNDRV_PCM_FORMAT_S32_LE:
 498                 iface |= 0x000c;
 499                 break;
 500         }
 501
 502         /* set iface & srate */
 503         snd_soc_write(codec, WM8971_IFACE, iface);
 504         if (coeff >= 0)
 505                 snd_soc_write(codec, WM8971_SRATE, srate |
 506                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 507
 508         return 0;
 509 }
 510
 511 static int wm8971_mute(struct snd_soc_dai *dai, int mute)
 512 {
 513         struct snd_soc_codec *codec = dai->codec;
 514         u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7;
 515
 516         if (mute)
 517                 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
 518         else
 519                 snd_soc_write(codec, WM8971_ADCDAC, mute_reg);
 520         return 0;
 521 }
 522
 523 static int wm8971_set_bias_level(struct snd_soc_codec *codec,
 524         enum snd_soc_bias_level level)
 525 {
 526         u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 527
 528         switch (level) {
 529         case SND_SOC_BIAS_ON:
 530                 /* set vmid to 50k and unmute dac */
 531                 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
 532                 break;
 533         case SND_SOC_BIAS_PREPARE:
 534                 break;
 535         case SND_SOC_BIAS_STANDBY:
 536                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
 537                         snd_soc_cache_sync(codec);
 538
 539                 /* mute dac and set vmid to 500k, enable VREF */
 540                 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
 541                 break;
 542         case SND_SOC_BIAS_OFF:
 543                 snd_soc_write(codec, WM8971_PWR1, 0x0001);
 544                 break;
 545         }
 546         codec->dapm.bias_level = level;
 547         return 0;
 548 }
 549
 550 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 551                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 552                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 553
 554 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 555         SNDRV_PCM_FMTBIT_S24_LE)
 556
 557 static const struct snd_soc_dai_ops wm8971_dai_ops = {
 558         .hw_params      = wm8971_pcm_hw_params,
 559         .digital_mute   = wm8971_mute,
 560         .set_fmt        = wm8971_set_dai_fmt,
 561         .set_sysclk     = wm8971_set_dai_sysclk,
 562 };
 563
 564 static struct snd_soc_dai_driver wm8971_dai = {
 565         .name = "wm8971-hifi",
 566         .playback = {
 567                 .stream_name = "Playback",
 568                 .channels_min = 1,
 569                 .channels_max = 2,
 570                 .rates = WM8971_RATES,
 571                 .formats = WM8971_FORMATS,},
 572         .capture = {
 573                 .stream_name = "Capture",
 574                 .channels_min = 1,
 575                 .channels_max = 2,
 576                 .rates = WM8971_RATES,
 577                 .formats = WM8971_FORMATS,},
 578         .ops = &wm8971_dai_ops,
 579 };
 580
 581 static void wm8971_work(struct work_struct *work)
 582 {
 583         struct snd_soc_dapm_context *dapm =
 584                 container_of(work, struct snd_soc_dapm_context,
 585                              delayed_work.work);
 586         struct snd_soc_codec *codec = dapm->codec;
 587         wm8971_set_bias_level(codec, codec->dapm.bias_level);
 588 }
 589
 590 static int wm8971_suspend(struct snd_soc_codec *codec)
 591 {
 592         wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 593         return 0;
 594 }
 595
 596 static int wm8971_resume(struct snd_soc_codec *codec)
 597 {
 598         u16 reg;
 599
 600         wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 601
 602         /* charge wm8971 caps */
 603         if (codec->dapm.suspend_bias_level == SND_SOC_BIAS_ON) {
 604                 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 605                 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
 606                 codec->dapm.bias_level = SND_SOC_BIAS_ON;
 607                 queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work,
 608                         msecs_to_jiffies(1000));
 609         }
 610
 611         return 0;
 612 }
 613
 614 static int wm8971_probe(struct snd_soc_codec *codec)
 615 {
 616         struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
 617         int ret = 0;
 618         u16 reg;
 619
 620         ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8971->control_type);
 621         if (ret < 0) {
 622                 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret);
 623                 return ret;
 624         }
 625
 626         INIT_DELAYED_WORK(&codec->dapm.delayed_work, wm8971_work);
 627         wm8971_workq = create_workqueue("wm8971");
 628         if (wm8971_workq == NULL)
 629                 return -ENOMEM;
 630
 631         wm8971_reset(codec);
 632
 633         /* charge output caps - set vmid to 5k for quick power up */
 634         reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 635         snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
 636         codec->dapm.bias_level = SND_SOC_BIAS_STANDBY;
 637         queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work,
 638                 msecs_to_jiffies(1000));
 639
 640         /* set the update bits */
 641         snd_soc_update_bits(codec, WM8971_LDAC, 0x0100, 0x0100);
 642         snd_soc_update_bits(codec, WM8971_RDAC, 0x0100, 0x0100);
 643         snd_soc_update_bits(codec, WM8971_LOUT1V, 0x0100, 0x0100);
 644         snd_soc_update_bits(codec, WM8971_ROUT1V, 0x0100, 0x0100);
 645         snd_soc_update_bits(codec, WM8971_LOUT2V, 0x0100, 0x0100);
 646         snd_soc_update_bits(codec, WM8971_ROUT2V, 0x0100, 0x0100);
 647         snd_soc_update_bits(codec, WM8971_LINVOL, 0x0100, 0x0100);
 648         snd_soc_update_bits(codec, WM8971_RINVOL, 0x0100, 0x0100);
 649
 650         return ret;
 651 }
 652
 653
 654 /* power down chip */
 655 static int wm8971_remove(struct snd_soc_codec *codec)
 656 {
 657         wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 658
 659         if (wm8971_workq)
 660                 destroy_workqueue(wm8971_workq);
 661         return 0;
 662 }
 663
 664 static struct snd_soc_codec_driver soc_codec_dev_wm8971 = {
 665         .probe =        wm8971_probe,
 666         .remove =       wm8971_remove,
 667         .suspend =      wm8971_suspend,
 668         .resume =       wm8971_resume,
 669         .set_bias_level = wm8971_set_bias_level,
 670         .reg_cache_size = ARRAY_SIZE(wm8971_reg),
 671         .reg_word_size = sizeof(u16),
 672         .reg_cache_default = wm8971_reg,
 673
 674         .controls = wm8971_snd_controls,
 675         .num_controls = ARRAY_SIZE(wm8971_snd_controls),
 676         .dapm_widgets = wm8971_dapm_widgets,
 677         .num_dapm_widgets = ARRAY_SIZE(wm8971_dapm_widgets),
 678         .dapm_routes = wm8971_dapm_routes,
 679         .num_dapm_routes = ARRAY_SIZE(wm8971_dapm_routes),
 680 };
 681
 682 static __devinit int wm8971_i2c_probe(struct i2c_client *i2c,
 683                                       const struct i2c_device_id *id)
 684 {
 685         struct wm8971_priv *wm8971;
 686         int ret;
 687
 688         wm8971 = devm_kzalloc(&i2c->dev, sizeof(struct wm8971_priv),
 689                               GFP_KERNEL);
 690         if (wm8971 == NULL)
 691                 return -ENOMEM;
 692
 693         wm8971->control_type = SND_SOC_I2C;
 694         i2c_set_clientdata(i2c, wm8971);
 695
 696         ret = snd_soc_register_codec(&i2c->dev,
 697                         &soc_codec_dev_wm8971, &wm8971_dai, 1);
 698
 699         return ret;
 700 }
 701
 702 static __devexit int wm8971_i2c_remove(struct i2c_client *client)
 703 {
 704         snd_soc_unregister_codec(&client->dev);
 705         return 0;
 706 }
 707
 708 static const struct i2c_device_id wm8971_i2c_id[] = {
 709         { "wm8971", 0 },
 710         { }
 711 };
 712 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
 713
 714 static struct i2c_driver wm8971_i2c_driver = {
 715         .driver = {
 716                 .name = "wm8971",
 717                 .owner = THIS_MODULE,
 718         },
 719         .probe =    wm8971_i2c_probe,
 720         .remove =   __devexit_p(wm8971_i2c_remove),
 721         .id_table = wm8971_i2c_id,
 722 };
 723
 724 static int __init wm8971_modinit(void)
 725 {
 726         int ret = 0;
 727         ret = i2c_add_driver(&wm8971_i2c_driver);
 728         if (ret != 0) {
 729                 printk(KERN_ERR "Failed to register WM8971 I2C driver: %d\n",
 730                        ret);
 731         }
 732         return ret;
 733 }
 734 module_init(wm8971_modinit);
 735
 736 static void __exit wm8971_exit(void)
 737 {
 738         i2c_del_driver(&wm8971_i2c_driver);
 739 }
 740 module_exit(wm8971_exit);
 741
 742 MODULE_DESCRIPTION("ASoC WM8971 driver");
 743 MODULE_AUTHOR("Lab126");
 744 MODULE_LICENSE("GPL");