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/platform_device.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 "wm8971.h"
  31
  32 #define WM8971_VERSION "0.9"
  33
  34 #define WM8971_REG_COUNT                43
  35
  36 static struct workqueue_struct *wm8971_workq = NULL;
  37
  38 /* codec private data */
  39 struct wm8971_priv {
  40         unsigned int sysclk;
  41 };
  42
  43 /*
  44  * wm8971 register cache
  45  * We can't read the WM8971 register space when we
  46  * are using 2 wire for device control, so we cache them instead.
  47  */
  48 static const u16 wm8971_reg[] = {
  49         0x0097, 0x0097, 0x0079, 0x0079,  /*  0 */
  50         0x0000, 0x0008, 0x0000, 0x000a,  /*  4 */
  51         0x0000, 0x0000, 0x00ff, 0x00ff,  /*  8 */
  52         0x000f, 0x000f, 0x0000, 0x0000,  /* 12 */
  53         0x0000, 0x007b, 0x0000, 0x0032,  /* 16 */
  54         0x0000, 0x00c3, 0x00c3, 0x00c0,  /* 20 */
  55         0x0000, 0x0000, 0x0000, 0x0000,  /* 24 */
  56         0x0000, 0x0000, 0x0000, 0x0000,  /* 28 */
  57         0x0000, 0x0000, 0x0050, 0x0050,  /* 32 */
  58         0x0050, 0x0050, 0x0050, 0x0050,  /* 36 */
  59         0x0079, 0x0079, 0x0079,          /* 40 */
  60 };
  61
  62 static inline unsigned int wm8971_read_reg_cache(struct snd_soc_codec *codec,
  63         unsigned int reg)
  64 {
  65         u16 *cache = codec->reg_cache;
  66         if (reg < WM8971_REG_COUNT)
  67                 return cache[reg];
  68
  69         return -1;
  70 }
  71
  72 static inline void wm8971_write_reg_cache(struct snd_soc_codec *codec,
  73         unsigned int reg, unsigned int value)
  74 {
  75         u16 *cache = codec->reg_cache;
  76         if (reg < WM8971_REG_COUNT)
  77                 cache[reg] = value;
  78 }
  79
  80 static int wm8971_write(struct snd_soc_codec *codec, unsigned int reg,
  81         unsigned int value)
  82 {
  83         u8 data[2];
  84
  85         /* data is
  86          *   D15..D9 WM8753 register offset
  87          *   D8...D0 register data
  88          */
  89         data[0] = (reg << 1) | ((value >> 8) & 0x0001);
  90         data[1] = value & 0x00ff;
  91
  92         wm8971_write_reg_cache (codec, reg, value);
  93         if (codec->hw_write(codec->control_data, data, 2) == 2)
  94                 return 0;
  95         else
  96                 return -EIO;
  97 }
  98
  99 #define wm8971_reset(c) wm8971_write(c, WM8971_RESET, 0)
 100
 101 /* WM8971 Controls */
 102 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
 103 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
 104         "200Hz @ 48kHz" };
 105 static const char *wm8971_treble[] = { "8kHz", "4kHz" };
 106 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
 107 static const char *wm8971_ng_type[] = { "Constant PGA Gain",
 108         "Mute ADC Output" };
 109 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
 110 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
 111         "Mono (Right)", "Digital Mono"};
 112 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
 113 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
 114         "Differential"};
 115 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
 116         "Differential"};
 117 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
 118 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
 119 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
 120         "L + R Invert"};
 121
 122 static const struct soc_enum wm8971_enum[] = {
 123         SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass),        /* 0 */
 124         SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
 125         SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
 126         SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
 127         SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type),    /* 4 */
 128         SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
 129         SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
 130         SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
 131         SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
 132         SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
 133         SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
 134         SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
 135         SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol),    /* 12 */
 136         SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
 137 };
 138
 139 static const struct snd_kcontrol_new wm8971_snd_controls[] = {
 140         SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
 141         SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
 142                      6, 1, 0),
 143         SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
 144
 145         SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
 146                 WM8971_ROUT1V, 7, 1, 0),
 147         SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
 148                 WM8971_ROUT2V, 7, 1, 0),
 149         SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
 150
 151         SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
 152
 153         SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
 154                 WM8971_LOUTM2, 4, 7, 1),
 155         SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
 156                 WM8971_ROUTM2, 4, 7, 1),
 157         SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
 158                 WM8971_MOUTM2, 4, 7, 1),
 159
 160         SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
 161                 WM8971_ROUT1V, 0, 127, 0),
 162         SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
 163                 WM8971_ROUT2V, 0, 127, 0),
 164
 165         SOC_ENUM("Bass Boost", wm8971_enum[0]),
 166         SOC_ENUM("Bass Filter", wm8971_enum[1]),
 167         SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
 168
 169         SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
 170         SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
 171
 172         SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
 173
 174         SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
 175         SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
 176
 177         SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
 178         SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
 179         SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
 180         SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
 181         SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
 182         SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
 183         SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
 184         SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
 185         SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
 186         SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
 187
 188         SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
 189         SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
 190
 191         SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
 192         SOC_ENUM("Playback Function", wm8971_enum[6]),
 193         SOC_ENUM("Playback Phase", wm8971_enum[7]),
 194
 195         SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
 196 };
 197
 198 /* add non-DAPM controls */
 199 static int wm8971_add_controls(struct snd_soc_codec *codec)
 200 {
 201         int err, i;
 202
 203         for (i = 0; i < ARRAY_SIZE(wm8971_snd_controls); i++) {
 204                 err = snd_ctl_add(codec->card,
 205                                 snd_soc_cnew(&wm8971_snd_controls[i],
 206                                              codec, NULL));
 207                 if (err < 0)
 208                         return err;
 209         }
 210         return 0;
 211 }
 212
 213 /*
 214  * DAPM Controls
 215  */
 216
 217 /* Left Mixer */
 218 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
 219 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
 220 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
 221 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
 222 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
 223 };
 224
 225 /* Right Mixer */
 226 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
 227 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
 228 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
 229 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
 230 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
 231 };
 232
 233 /* Mono Mixer */
 234 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
 235 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
 236 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
 237 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
 238 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
 239 };
 240
 241 /* Left Line Mux */
 242 static const struct snd_kcontrol_new wm8971_left_line_controls =
 243 SOC_DAPM_ENUM("Route", wm8971_enum[8]);
 244
 245 /* Right Line Mux */
 246 static const struct snd_kcontrol_new wm8971_right_line_controls =
 247 SOC_DAPM_ENUM("Route", wm8971_enum[9]);
 248
 249 /* Left PGA Mux */
 250 static const struct snd_kcontrol_new wm8971_left_pga_controls =
 251 SOC_DAPM_ENUM("Route", wm8971_enum[10]);
 252
 253 /* Right PGA Mux */
 254 static const struct snd_kcontrol_new wm8971_right_pga_controls =
 255 SOC_DAPM_ENUM("Route", wm8971_enum[11]);
 256
 257 /* Mono ADC Mux */
 258 static const struct snd_kcontrol_new wm8971_monomux_controls =
 259 SOC_DAPM_ENUM("Route", wm8971_enum[13]);
 260
 261 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
 262         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 263                 &wm8971_left_mixer_controls[0],
 264                 ARRAY_SIZE(wm8971_left_mixer_controls)),
 265         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 266                 &wm8971_right_mixer_controls[0],
 267                 ARRAY_SIZE(wm8971_right_mixer_controls)),
 268         SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
 269                 &wm8971_mono_mixer_controls[0],
 270                 ARRAY_SIZE(wm8971_mono_mixer_controls)),
 271
 272         SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
 273         SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
 274         SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
 275         SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
 276         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
 277         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
 278         SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
 279
 280         SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0),
 281         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
 282         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
 283
 284         SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
 285                 &wm8971_left_pga_controls),
 286         SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
 287                 &wm8971_right_pga_controls),
 288         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 289                 &wm8971_left_line_controls),
 290         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 291                 &wm8971_right_line_controls),
 292
 293         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 294                 &wm8971_monomux_controls),
 295         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 296                 &wm8971_monomux_controls),
 297
 298         SND_SOC_DAPM_OUTPUT("LOUT1"),
 299         SND_SOC_DAPM_OUTPUT("ROUT1"),
 300         SND_SOC_DAPM_OUTPUT("LOUT2"),
 301         SND_SOC_DAPM_OUTPUT("ROUT2"),
 302         SND_SOC_DAPM_OUTPUT("MONO"),
 303
 304         SND_SOC_DAPM_INPUT("LINPUT1"),
 305         SND_SOC_DAPM_INPUT("RINPUT1"),
 306         SND_SOC_DAPM_INPUT("MIC"),
 307 };
 308
 309 static const struct snd_soc_dapm_route audio_map[] = {
 310         /* left mixer */
 311         {"Left Mixer", "Playback Switch", "Left DAC"},
 312         {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
 313         {"Left Mixer", "Right Playback Switch", "Right DAC"},
 314         {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
 315
 316         /* right mixer */
 317         {"Right Mixer", "Left Playback Switch", "Left DAC"},
 318         {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
 319         {"Right Mixer", "Playback Switch", "Right DAC"},
 320         {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
 321
 322         /* left out 1 */
 323         {"Left Out 1", NULL, "Left Mixer"},
 324         {"LOUT1", NULL, "Left Out 1"},
 325
 326         /* left out 2 */
 327         {"Left Out 2", NULL, "Left Mixer"},
 328         {"LOUT2", NULL, "Left Out 2"},
 329
 330         /* right out 1 */
 331         {"Right Out 1", NULL, "Right Mixer"},
 332         {"ROUT1", NULL, "Right Out 1"},
 333
 334         /* right out 2 */
 335         {"Right Out 2", NULL, "Right Mixer"},
 336         {"ROUT2", NULL, "Right Out 2"},
 337
 338         /* mono mixer */
 339         {"Mono Mixer", "Left Playback Switch", "Left DAC"},
 340         {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
 341         {"Mono Mixer", "Right Playback Switch", "Right DAC"},
 342         {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
 343
 344         /* mono out */
 345         {"Mono Out", NULL, "Mono Mixer"},
 346         {"MONO1", NULL, "Mono Out"},
 347
 348         /* Left Line Mux */
 349         {"Left Line Mux", "Line", "LINPUT1"},
 350         {"Left Line Mux", "PGA", "Left PGA Mux"},
 351         {"Left Line Mux", "Differential", "Differential Mux"},
 352
 353         /* Right Line Mux */
 354         {"Right Line Mux", "Line", "RINPUT1"},
 355         {"Right Line Mux", "Mic", "MIC"},
 356         {"Right Line Mux", "PGA", "Right PGA Mux"},
 357         {"Right Line Mux", "Differential", "Differential Mux"},
 358
 359         /* Left PGA Mux */
 360         {"Left PGA Mux", "Line", "LINPUT1"},
 361         {"Left PGA Mux", "Differential", "Differential Mux"},
 362
 363         /* Right PGA Mux */
 364         {"Right PGA Mux", "Line", "RINPUT1"},
 365         {"Right PGA Mux", "Differential", "Differential Mux"},
 366
 367         /* Differential Mux */
 368         {"Differential Mux", "Line", "LINPUT1"},
 369         {"Differential Mux", "Line", "RINPUT1"},
 370
 371         /* Left ADC Mux */
 372         {"Left ADC Mux", "Stereo", "Left PGA Mux"},
 373         {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
 374         {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
 375
 376         /* Right ADC Mux */
 377         {"Right ADC Mux", "Stereo", "Right PGA Mux"},
 378         {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
 379         {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
 380
 381         /* ADC */
 382         {"Left ADC", NULL, "Left ADC Mux"},
 383         {"Right ADC", NULL, "Right ADC Mux"},
 384 };
 385
 386 static int wm8971_add_widgets(struct snd_soc_codec *codec)
 387 {
 388         snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets,
 389                                   ARRAY_SIZE(wm8971_dapm_widgets));
 390
 391         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 392
 393         snd_soc_dapm_new_widgets(codec);
 394
 395         return 0;
 396 }
 397
 398 struct _coeff_div {
 399         u32 mclk;
 400         u32 rate;
 401         u16 fs;
 402         u8 sr:5;
 403         u8 usb:1;
 404 };
 405
 406 /* codec hifi mclk clock divider coefficients */
 407 static const struct _coeff_div coeff_div[] = {
 408         /* 8k */
 409         {12288000, 8000, 1536, 0x6, 0x0},
 410         {11289600, 8000, 1408, 0x16, 0x0},
 411         {18432000, 8000, 2304, 0x7, 0x0},
 412         {16934400, 8000, 2112, 0x17, 0x0},
 413         {12000000, 8000, 1500, 0x6, 0x1},
 414
 415         /* 11.025k */
 416         {11289600, 11025, 1024, 0x18, 0x0},
 417         {16934400, 11025, 1536, 0x19, 0x0},
 418         {12000000, 11025, 1088, 0x19, 0x1},
 419
 420         /* 16k */
 421         {12288000, 16000, 768, 0xa, 0x0},
 422         {18432000, 16000, 1152, 0xb, 0x0},
 423         {12000000, 16000, 750, 0xa, 0x1},
 424
 425         /* 22.05k */
 426         {11289600, 22050, 512, 0x1a, 0x0},
 427         {16934400, 22050, 768, 0x1b, 0x0},
 428         {12000000, 22050, 544, 0x1b, 0x1},
 429
 430         /* 32k */
 431         {12288000, 32000, 384, 0xc, 0x0},
 432         {18432000, 32000, 576, 0xd, 0x0},
 433         {12000000, 32000, 375, 0xa, 0x1},
 434
 435         /* 44.1k */
 436         {11289600, 44100, 256, 0x10, 0x0},
 437         {16934400, 44100, 384, 0x11, 0x0},
 438         {12000000, 44100, 272, 0x11, 0x1},
 439
 440         /* 48k */
 441         {12288000, 48000, 256, 0x0, 0x0},
 442         {18432000, 48000, 384, 0x1, 0x0},
 443         {12000000, 48000, 250, 0x0, 0x1},
 444
 445         /* 88.2k */
 446         {11289600, 88200, 128, 0x1e, 0x0},
 447         {16934400, 88200, 192, 0x1f, 0x0},
 448         {12000000, 88200, 136, 0x1f, 0x1},
 449
 450         /* 96k */
 451         {12288000, 96000, 128, 0xe, 0x0},
 452         {18432000, 96000, 192, 0xf, 0x0},
 453         {12000000, 96000, 125, 0xe, 0x1},
 454 };
 455
 456 static int get_coeff(int mclk, int rate)
 457 {
 458         int i;
 459
 460         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 461                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 462                         return i;
 463         }
 464         return -EINVAL;
 465 }
 466
 467 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 468                 int clk_id, unsigned int freq, int dir)
 469 {
 470         struct snd_soc_codec *codec = codec_dai->codec;
 471         struct wm8971_priv *wm8971 = codec->private_data;
 472
 473         switch (freq) {
 474         case 11289600:
 475         case 12000000:
 476         case 12288000:
 477         case 16934400:
 478         case 18432000:
 479                 wm8971->sysclk = freq;
 480                 return 0;
 481         }
 482         return -EINVAL;
 483 }
 484
 485 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
 486                 unsigned int fmt)
 487 {
 488         struct snd_soc_codec *codec = codec_dai->codec;
 489         u16 iface = 0;
 490
 491         /* set master/slave audio interface */
 492         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 493         case SND_SOC_DAIFMT_CBM_CFM:
 494                 iface = 0x0040;
 495                 break;
 496         case SND_SOC_DAIFMT_CBS_CFS:
 497                 break;
 498         default:
 499                 return -EINVAL;
 500         }
 501
 502         /* interface format */
 503         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 504         case SND_SOC_DAIFMT_I2S:
 505                 iface |= 0x0002;
 506                 break;
 507         case SND_SOC_DAIFMT_RIGHT_J:
 508                 break;
 509         case SND_SOC_DAIFMT_LEFT_J:
 510                 iface |= 0x0001;
 511                 break;
 512         case SND_SOC_DAIFMT_DSP_A:
 513                 iface |= 0x0003;
 514                 break;
 515         case SND_SOC_DAIFMT_DSP_B:
 516                 iface |= 0x0013;
 517                 break;
 518         default:
 519                 return -EINVAL;
 520         }
 521
 522         /* clock inversion */
 523         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 524         case SND_SOC_DAIFMT_NB_NF:
 525                 break;
 526         case SND_SOC_DAIFMT_IB_IF:
 527                 iface |= 0x0090;
 528                 break;
 529         case SND_SOC_DAIFMT_IB_NF:
 530                 iface |= 0x0080;
 531                 break;
 532         case SND_SOC_DAIFMT_NB_IF:
 533                 iface |= 0x0010;
 534                 break;
 535         default:
 536                 return -EINVAL;
 537         }
 538
 539         wm8971_write(codec, WM8971_IFACE, iface);
 540         return 0;
 541 }
 542
 543 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
 544         struct snd_pcm_hw_params *params,
 545         struct snd_soc_dai *dai)
 546 {
 547         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 548         struct snd_soc_device *socdev = rtd->socdev;
 549         struct snd_soc_codec *codec = socdev->codec;
 550         struct wm8971_priv *wm8971 = codec->private_data;
 551         u16 iface = wm8971_read_reg_cache(codec, WM8971_IFACE) & 0x1f3;
 552         u16 srate = wm8971_read_reg_cache(codec, WM8971_SRATE) & 0x1c0;
 553         int coeff = get_coeff(wm8971->sysclk, params_rate(params));
 554
 555         /* bit size */
 556         switch (params_format(params)) {
 557         case SNDRV_PCM_FORMAT_S16_LE:
 558                 break;
 559         case SNDRV_PCM_FORMAT_S20_3LE:
 560                 iface |= 0x0004;
 561                 break;
 562         case SNDRV_PCM_FORMAT_S24_LE:
 563                 iface |= 0x0008;
 564                 break;
 565         case SNDRV_PCM_FORMAT_S32_LE:
 566                 iface |= 0x000c;
 567                 break;
 568         }
 569
 570         /* set iface & srate */
 571         wm8971_write(codec, WM8971_IFACE, iface);
 572         if (coeff >= 0)
 573                 wm8971_write(codec, WM8971_SRATE, srate |
 574                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 575
 576         return 0;
 577 }
 578
 579 static int wm8971_mute(struct snd_soc_dai *dai, int mute)
 580 {
 581         struct snd_soc_codec *codec = dai->codec;
 582         u16 mute_reg = wm8971_read_reg_cache(codec, WM8971_ADCDAC) & 0xfff7;
 583
 584         if (mute)
 585                 wm8971_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
 586         else
 587                 wm8971_write(codec, WM8971_ADCDAC, mute_reg);
 588         return 0;
 589 }
 590
 591 static int wm8971_set_bias_level(struct snd_soc_codec *codec,
 592         enum snd_soc_bias_level level)
 593 {
 594         u16 pwr_reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
 595
 596         switch (level) {
 597         case SND_SOC_BIAS_ON:
 598                 /* set vmid to 50k and unmute dac */
 599                 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
 600                 break;
 601         case SND_SOC_BIAS_PREPARE:
 602                 break;
 603         case SND_SOC_BIAS_STANDBY:
 604                 /* mute dac and set vmid to 500k, enable VREF */
 605                 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
 606                 break;
 607         case SND_SOC_BIAS_OFF:
 608                 wm8971_write(codec, WM8971_PWR1, 0x0001);
 609                 break;
 610         }
 611         codec->bias_level = level;
 612         return 0;
 613 }
 614
 615 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 616                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 617                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 618
 619 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 620         SNDRV_PCM_FMTBIT_S24_LE)
 621
 622 struct snd_soc_dai wm8971_dai = {
 623         .name = "WM8971",
 624         .playback = {
 625                 .stream_name = "Playback",
 626                 .channels_min = 1,
 627                 .channels_max = 2,
 628                 .rates = WM8971_RATES,
 629                 .formats = WM8971_FORMATS,},
 630         .capture = {
 631                 .stream_name = "Capture",
 632                 .channels_min = 1,
 633                 .channels_max = 2,
 634                 .rates = WM8971_RATES,
 635                 .formats = WM8971_FORMATS,},
 636         .ops = {
 637                 .hw_params = wm8971_pcm_hw_params,
 638                 .digital_mute = wm8971_mute,
 639                 .set_fmt = wm8971_set_dai_fmt,
 640                 .set_sysclk = wm8971_set_dai_sysclk,
 641         },
 642 };
 643 EXPORT_SYMBOL_GPL(wm8971_dai);
 644
 645 static void wm8971_work(struct work_struct *work)
 646 {
 647         struct snd_soc_codec *codec =
 648                 container_of(work, struct snd_soc_codec, delayed_work.work);
 649         wm8971_set_bias_level(codec, codec->bias_level);
 650 }
 651
 652 static int wm8971_suspend(struct platform_device *pdev, pm_message_t state)
 653 {
 654         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 655         struct snd_soc_codec *codec = socdev->codec;
 656
 657         wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 658         return 0;
 659 }
 660
 661 static int wm8971_resume(struct platform_device *pdev)
 662 {
 663         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 664         struct snd_soc_codec *codec = socdev->codec;
 665         int i;
 666         u8 data[2];
 667         u16 *cache = codec->reg_cache;
 668         u16 reg;
 669
 670         /* Sync reg_cache with the hardware */
 671         for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) {
 672                 if (i + 1 == WM8971_RESET)
 673                         continue;
 674                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 675                 data[1] = cache[i] & 0x00ff;
 676                 codec->hw_write(codec->control_data, data, 2);
 677         }
 678
 679         wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 680
 681         /* charge wm8971 caps */
 682         if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
 683                 reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
 684                 wm8971_write(codec, WM8971_PWR1, reg | 0x01c0);
 685                 codec->bias_level = SND_SOC_BIAS_ON;
 686                 queue_delayed_work(wm8971_workq, &codec->delayed_work,
 687                         msecs_to_jiffies(1000));
 688         }
 689
 690         return 0;
 691 }
 692
 693 static int wm8971_init(struct snd_soc_device *socdev)
 694 {
 695         struct snd_soc_codec *codec = socdev->codec;
 696         int reg, ret = 0;
 697
 698         codec->name = "WM8971";
 699         codec->owner = THIS_MODULE;
 700         codec->read = wm8971_read_reg_cache;
 701         codec->write = wm8971_write;
 702         codec->set_bias_level = wm8971_set_bias_level;
 703         codec->dai = &wm8971_dai;
 704         codec->reg_cache_size = ARRAY_SIZE(wm8971_reg);
 705         codec->num_dai = 1;
 706         codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL);
 707
 708         if (codec->reg_cache == NULL)
 709                 return -ENOMEM;
 710
 711         wm8971_reset(codec);
 712
 713         /* register pcms */
 714         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 715         if (ret < 0) {
 716                 printk(KERN_ERR "wm8971: failed to create pcms\n");
 717                 goto pcm_err;
 718         }
 719
 720         /* charge output caps - set vmid to 5k for quick power up */
 721         reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
 722         wm8971_write(codec, WM8971_PWR1, reg | 0x01c0);
 723         codec->bias_level = SND_SOC_BIAS_STANDBY;
 724         queue_delayed_work(wm8971_workq, &codec->delayed_work,
 725                 msecs_to_jiffies(1000));
 726
 727         /* set the update bits */
 728         reg = wm8971_read_reg_cache(codec, WM8971_LDAC);
 729         wm8971_write(codec, WM8971_LDAC, reg | 0x0100);
 730         reg = wm8971_read_reg_cache(codec, WM8971_RDAC);
 731         wm8971_write(codec, WM8971_RDAC, reg | 0x0100);
 732
 733         reg = wm8971_read_reg_cache(codec, WM8971_LOUT1V);
 734         wm8971_write(codec, WM8971_LOUT1V, reg | 0x0100);
 735         reg = wm8971_read_reg_cache(codec, WM8971_ROUT1V);
 736         wm8971_write(codec, WM8971_ROUT1V, reg | 0x0100);
 737
 738         reg = wm8971_read_reg_cache(codec, WM8971_LOUT2V);
 739         wm8971_write(codec, WM8971_LOUT2V, reg | 0x0100);
 740         reg = wm8971_read_reg_cache(codec, WM8971_ROUT2V);
 741         wm8971_write(codec, WM8971_ROUT2V, reg | 0x0100);
 742
 743         reg = wm8971_read_reg_cache(codec, WM8971_LINVOL);
 744         wm8971_write(codec, WM8971_LINVOL, reg | 0x0100);
 745         reg = wm8971_read_reg_cache(codec, WM8971_RINVOL);
 746         wm8971_write(codec, WM8971_RINVOL, reg | 0x0100);
 747
 748         wm8971_add_controls(codec);
 749         wm8971_add_widgets(codec);
 750         ret = snd_soc_init_card(socdev);
 751         if (ret < 0) {
 752                 printk(KERN_ERR "wm8971: failed to register card\n");
 753                 goto card_err;
 754         }
 755         return ret;
 756
 757 card_err:
 758         snd_soc_free_pcms(socdev);
 759         snd_soc_dapm_free(socdev);
 760 pcm_err:
 761         kfree(codec->reg_cache);
 762         return ret;
 763 }
 764
 765 /* If the i2c layer weren't so broken, we could pass this kind of data
 766    around */
 767 static struct snd_soc_device *wm8971_socdev;
 768
 769 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 770
 771 static int wm8971_i2c_probe(struct i2c_client *i2c,
 772                             const struct i2c_device_id *id)
 773 {
 774         struct snd_soc_device *socdev = wm8971_socdev;
 775         struct snd_soc_codec *codec = socdev->codec;
 776         int ret;
 777
 778         i2c_set_clientdata(i2c, codec);
 779
 780         codec->control_data = i2c;
 781
 782         ret = wm8971_init(socdev);
 783         if (ret < 0)
 784                 pr_err("failed to initialise WM8971\n");
 785
 786         return ret;
 787 }
 788
 789 static int wm8971_i2c_remove(struct i2c_client *client)
 790 {
 791         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 792         kfree(codec->reg_cache);
 793         return 0;
 794 }
 795
 796 static const struct i2c_device_id wm8971_i2c_id[] = {
 797         { "wm8971", 0 },
 798         { }
 799 };
 800 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
 801
 802 static struct i2c_driver wm8971_i2c_driver = {
 803         .driver = {
 804                 .name = "WM8971 I2C Codec",
 805                 .owner = THIS_MODULE,
 806         },
 807         .probe    = wm8971_i2c_probe,
 808         .remove   = wm8971_i2c_remove,
 809         .id_table = wm8971_i2c_id,
 810 };
 811
 812 static int wm8971_add_i2c_device(struct platform_device *pdev,
 813                                  const struct wm8971_setup_data *setup)
 814 {
 815         struct i2c_board_info info;
 816         struct i2c_adapter *adapter;
 817         struct i2c_client *client;
 818         int ret;
 819
 820         ret = i2c_add_driver(&wm8971_i2c_driver);
 821         if (ret != 0) {
 822                 dev_err(&pdev->dev, "can't add i2c driver\n");
 823                 return ret;
 824         }
 825
 826         memset(&info, 0, sizeof(struct i2c_board_info));
 827         info.addr = setup->i2c_address;
 828         strlcpy(info.type, "wm8971", I2C_NAME_SIZE);
 829
 830         adapter = i2c_get_adapter(setup->i2c_bus);
 831         if (!adapter) {
 832                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 833                         setup->i2c_bus);
 834                 goto err_driver;
 835         }
 836
 837         client = i2c_new_device(adapter, &info);
 838         i2c_put_adapter(adapter);
 839         if (!client) {
 840                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 841                         (unsigned int)info.addr);
 842                 goto err_driver;
 843         }
 844
 845         return 0;
 846
 847 err_driver:
 848         i2c_del_driver(&wm8971_i2c_driver);
 849         return -ENODEV;
 850 }
 851
 852 #endif
 853
 854 static int wm8971_probe(struct platform_device *pdev)
 855 {
 856         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 857         struct wm8971_setup_data *setup;
 858         struct snd_soc_codec *codec;
 859         struct wm8971_priv *wm8971;
 860         int ret = 0;
 861
 862         pr_info("WM8971 Audio Codec %s", WM8971_VERSION);
 863
 864         setup = socdev->codec_data;
 865         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 866         if (codec == NULL)
 867                 return -ENOMEM;
 868
 869         wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
 870         if (wm8971 == NULL) {
 871                 kfree(codec);
 872                 return -ENOMEM;
 873         }
 874
 875         codec->private_data = wm8971;
 876         socdev->codec = codec;
 877         mutex_init(&codec->mutex);
 878         INIT_LIST_HEAD(&codec->dapm_widgets);
 879         INIT_LIST_HEAD(&codec->dapm_paths);
 880         wm8971_socdev = socdev;
 881
 882         INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
 883         wm8971_workq = create_workqueue("wm8971");
 884         if (wm8971_workq == NULL) {
 885                 kfree(codec->private_data);
 886                 kfree(codec);
 887                 return -ENOMEM;
 888         }
 889
 890 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 891         if (setup->i2c_address) {
 892                 codec->hw_write = (hw_write_t)i2c_master_send;
 893                 ret = wm8971_add_i2c_device(pdev, setup);
 894         }
 895 #endif
 896         /* Add other interfaces here */
 897
 898         if (ret != 0) {
 899                 destroy_workqueue(wm8971_workq);
 900                 kfree(codec->private_data);
 901                 kfree(codec);
 902         }
 903
 904         return ret;
 905 }
 906
 907 /* power down chip */
 908 static int wm8971_remove(struct platform_device *pdev)
 909 {
 910         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 911         struct snd_soc_codec *codec = socdev->codec;
 912
 913         if (codec->control_data)
 914                 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 915         if (wm8971_workq)
 916                 destroy_workqueue(wm8971_workq);
 917         snd_soc_free_pcms(socdev);
 918         snd_soc_dapm_free(socdev);
 919 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 920         i2c_unregister_device(codec->control_data);
 921         i2c_del_driver(&wm8971_i2c_driver);
 922 #endif
 923         kfree(codec->private_data);
 924         kfree(codec);
 925
 926         return 0;
 927 }
 928
 929 struct snd_soc_codec_device soc_codec_dev_wm8971 = {
 930         .probe =        wm8971_probe,
 931         .remove =       wm8971_remove,
 932         .suspend =      wm8971_suspend,
 933         .resume =       wm8971_resume,
 934 };
 935
 936 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971);
 937
 938 static int __init wm8971_modinit(void)
 939 {
 940         return snd_soc_register_dai(&wm8971_dai);
 941 }
 942 module_init(wm8971_modinit);
 943
 944 static void __exit wm8971_exit(void)
 945 {
 946         snd_soc_unregister_dai(&wm8971_dai);
 947 }
 948 module_exit(wm8971_exit);
 949
 950 MODULE_DESCRIPTION("ASoC WM8971 driver");
 951 MODULE_AUTHOR("Lab126");
 952 MODULE_LICENSE("GPL");