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