release/src-rt-6.x.4708/linux/linux-2.6.36/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 <linux/slab.h>
  24 #include <sound/core.h>
  25 #include <sound/pcm.h>
  26 #include <sound/pcm_params.h>
  27 #include <sound/soc.h>
  28 #include <sound/soc-dapm.h>
  29 #include <sound/initval.h>
  30
  31 #include "wm8971.h"
  32
  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 #define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0)
  64
  65 /* WM8971 Controls */
  66 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
  67 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
  68         "200Hz @ 48kHz" };
  69 static const char *wm8971_treble[] = { "8kHz", "4kHz" };
  70 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
  71 static const char *wm8971_ng_type[] = { "Constant PGA Gain",
  72         "Mute ADC Output" };
  73 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
  74 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
  75         "Mono (Right)", "Digital Mono"};
  76 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
  77 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
  78         "Differential"};
  79 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
  80         "Differential"};
  81 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
  82 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
  83 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
  84         "L + R Invert"};
  85
  86 static const struct soc_enum wm8971_enum[] = {
  87         SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass),        /* 0 */
  88         SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
  89         SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
  90         SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
  91         SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type),    /* 4 */
  92         SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
  93         SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
  94         SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
  95         SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
  96         SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
  97         SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
  98         SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
  99         SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol),    /* 12 */
 100         SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
 101 };
 102
 103 static const struct snd_kcontrol_new wm8971_snd_controls[] = {
 104         SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
 105         SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
 106                      6, 1, 0),
 107         SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
 108
 109         SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
 110                 WM8971_ROUT1V, 7, 1, 0),
 111         SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
 112                 WM8971_ROUT2V, 7, 1, 0),
 113         SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
 114
 115         SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
 116
 117         SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
 118                 WM8971_LOUTM2, 4, 7, 1),
 119         SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
 120                 WM8971_ROUTM2, 4, 7, 1),
 121         SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
 122                 WM8971_MOUTM2, 4, 7, 1),
 123
 124         SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
 125                 WM8971_ROUT1V, 0, 127, 0),
 126         SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
 127                 WM8971_ROUT2V, 0, 127, 0),
 128
 129         SOC_ENUM("Bass Boost", wm8971_enum[0]),
 130         SOC_ENUM("Bass Filter", wm8971_enum[1]),
 131         SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
 132
 133         SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
 134         SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
 135
 136         SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
 137
 138         SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
 139         SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
 140
 141         SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
 142         SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
 143         SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
 144         SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
 145         SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
 146         SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
 147         SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
 148         SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
 149         SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
 150         SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
 151
 152         SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
 153         SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
 154
 155         SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
 156         SOC_ENUM("Playback Function", wm8971_enum[6]),
 157         SOC_ENUM("Playback Phase", wm8971_enum[7]),
 158
 159         SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
 160 };
 161
 162 /*
 163  * DAPM Controls
 164  */
 165
 166 /* Left Mixer */
 167 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
 168 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
 169 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
 170 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
 171 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
 172 };
 173
 174 /* Right Mixer */
 175 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
 176 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
 177 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
 178 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
 179 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
 180 };
 181
 182 /* Mono Mixer */
 183 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
 184 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
 185 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
 186 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
 187 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
 188 };
 189
 190 /* Left Line Mux */
 191 static const struct snd_kcontrol_new wm8971_left_line_controls =
 192 SOC_DAPM_ENUM("Route", wm8971_enum[8]);
 193
 194 /* Right Line Mux */
 195 static const struct snd_kcontrol_new wm8971_right_line_controls =
 196 SOC_DAPM_ENUM("Route", wm8971_enum[9]);
 197
 198 /* Left PGA Mux */
 199 static const struct snd_kcontrol_new wm8971_left_pga_controls =
 200 SOC_DAPM_ENUM("Route", wm8971_enum[10]);
 201
 202 /* Right PGA Mux */
 203 static const struct snd_kcontrol_new wm8971_right_pga_controls =
 204 SOC_DAPM_ENUM("Route", wm8971_enum[11]);
 205
 206 /* Mono ADC Mux */
 207 static const struct snd_kcontrol_new wm8971_monomux_controls =
 208 SOC_DAPM_ENUM("Route", wm8971_enum[13]);
 209
 210 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
 211         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 212                 &wm8971_left_mixer_controls[0],
 213                 ARRAY_SIZE(wm8971_left_mixer_controls)),
 214         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 215                 &wm8971_right_mixer_controls[0],
 216                 ARRAY_SIZE(wm8971_right_mixer_controls)),
 217         SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
 218                 &wm8971_mono_mixer_controls[0],
 219                 ARRAY_SIZE(wm8971_mono_mixer_controls)),
 220
 221         SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
 222         SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
 223         SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
 224         SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
 225         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
 226         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
 227         SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
 228
 229         SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0),
 230         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
 231         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
 232
 233         SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
 234                 &wm8971_left_pga_controls),
 235         SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
 236                 &wm8971_right_pga_controls),
 237         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 238                 &wm8971_left_line_controls),
 239         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 240                 &wm8971_right_line_controls),
 241
 242         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 243                 &wm8971_monomux_controls),
 244         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 245                 &wm8971_monomux_controls),
 246
 247         SND_SOC_DAPM_OUTPUT("LOUT1"),
 248         SND_SOC_DAPM_OUTPUT("ROUT1"),
 249         SND_SOC_DAPM_OUTPUT("LOUT2"),
 250         SND_SOC_DAPM_OUTPUT("ROUT2"),
 251         SND_SOC_DAPM_OUTPUT("MONO"),
 252
 253         SND_SOC_DAPM_INPUT("LINPUT1"),
 254         SND_SOC_DAPM_INPUT("RINPUT1"),
 255         SND_SOC_DAPM_INPUT("MIC"),
 256 };
 257
 258 static const struct snd_soc_dapm_route audio_map[] = {
 259         /* left mixer */
 260         {"Left Mixer", "Playback Switch", "Left DAC"},
 261         {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
 262         {"Left Mixer", "Right Playback Switch", "Right DAC"},
 263         {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
 264
 265         /* right mixer */
 266         {"Right Mixer", "Left Playback Switch", "Left DAC"},
 267         {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
 268         {"Right Mixer", "Playback Switch", "Right DAC"},
 269         {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
 270
 271         /* left out 1 */
 272         {"Left Out 1", NULL, "Left Mixer"},
 273         {"LOUT1", NULL, "Left Out 1"},
 274
 275         /* left out 2 */
 276         {"Left Out 2", NULL, "Left Mixer"},
 277         {"LOUT2", NULL, "Left Out 2"},
 278
 279         /* right out 1 */
 280         {"Right Out 1", NULL, "Right Mixer"},
 281         {"ROUT1", NULL, "Right Out 1"},
 282
 283         /* right out 2 */
 284         {"Right Out 2", NULL, "Right Mixer"},
 285         {"ROUT2", NULL, "Right Out 2"},
 286
 287         /* mono mixer */
 288         {"Mono Mixer", "Left Playback Switch", "Left DAC"},
 289         {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
 290         {"Mono Mixer", "Right Playback Switch", "Right DAC"},
 291         {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
 292
 293         /* mono out */
 294         {"Mono Out", NULL, "Mono Mixer"},
 295         {"MONO1", NULL, "Mono Out"},
 296
 297         /* Left Line Mux */
 298         {"Left Line Mux", "Line", "LINPUT1"},
 299         {"Left Line Mux", "PGA", "Left PGA Mux"},
 300         {"Left Line Mux", "Differential", "Differential Mux"},
 301
 302         /* Right Line Mux */
 303         {"Right Line Mux", "Line", "RINPUT1"},
 304         {"Right Line Mux", "Mic", "MIC"},
 305         {"Right Line Mux", "PGA", "Right PGA Mux"},
 306         {"Right Line Mux", "Differential", "Differential Mux"},
 307
 308         /* Left PGA Mux */
 309         {"Left PGA Mux", "Line", "LINPUT1"},
 310         {"Left PGA Mux", "Differential", "Differential Mux"},
 311
 312         /* Right PGA Mux */
 313         {"Right PGA Mux", "Line", "RINPUT1"},
 314         {"Right PGA Mux", "Differential", "Differential Mux"},
 315
 316         /* Differential Mux */
 317         {"Differential Mux", "Line", "LINPUT1"},
 318         {"Differential Mux", "Line", "RINPUT1"},
 319
 320         /* Left ADC Mux */
 321         {"Left ADC Mux", "Stereo", "Left PGA Mux"},
 322         {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
 323         {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
 324
 325         /* Right ADC Mux */
 326         {"Right ADC Mux", "Stereo", "Right PGA Mux"},
 327         {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
 328         {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
 329
 330         /* ADC */
 331         {"Left ADC", NULL, "Left ADC Mux"},
 332         {"Right ADC", NULL, "Right ADC Mux"},
 333 };
 334
 335 static int wm8971_add_widgets(struct snd_soc_codec *codec)
 336 {
 337         snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets,
 338                                   ARRAY_SIZE(wm8971_dapm_widgets));
 339
 340         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 341
 342         return 0;
 343 }
 344
 345 struct _coeff_div {
 346         u32 mclk;
 347         u32 rate;
 348         u16 fs;
 349         u8 sr:5;
 350         u8 usb:1;
 351 };
 352
 353 /* codec hifi mclk clock divider coefficients */
 354 static const struct _coeff_div coeff_div[] = {
 355         /* 8k */
 356         {12288000, 8000, 1536, 0x6, 0x0},
 357         {11289600, 8000, 1408, 0x16, 0x0},
 358         {18432000, 8000, 2304, 0x7, 0x0},
 359         {16934400, 8000, 2112, 0x17, 0x0},
 360         {12000000, 8000, 1500, 0x6, 0x1},
 361
 362         /* 11.025k */
 363         {11289600, 11025, 1024, 0x18, 0x0},
 364         {16934400, 11025, 1536, 0x19, 0x0},
 365         {12000000, 11025, 1088, 0x19, 0x1},
 366
 367         /* 16k */
 368         {12288000, 16000, 768, 0xa, 0x0},
 369         {18432000, 16000, 1152, 0xb, 0x0},
 370         {12000000, 16000, 750, 0xa, 0x1},
 371
 372         /* 22.05k */
 373         {11289600, 22050, 512, 0x1a, 0x0},
 374         {16934400, 22050, 768, 0x1b, 0x0},
 375         {12000000, 22050, 544, 0x1b, 0x1},
 376
 377         /* 32k */
 378         {12288000, 32000, 384, 0xc, 0x0},
 379         {18432000, 32000, 576, 0xd, 0x0},
 380         {12000000, 32000, 375, 0xa, 0x1},
 381
 382         /* 44.1k */
 383         {11289600, 44100, 256, 0x10, 0x0},
 384         {16934400, 44100, 384, 0x11, 0x0},
 385         {12000000, 44100, 272, 0x11, 0x1},
 386
 387         /* 48k */
 388         {12288000, 48000, 256, 0x0, 0x0},
 389         {18432000, 48000, 384, 0x1, 0x0},
 390         {12000000, 48000, 250, 0x0, 0x1},
 391
 392         /* 88.2k */
 393         {11289600, 88200, 128, 0x1e, 0x0},
 394         {16934400, 88200, 192, 0x1f, 0x0},
 395         {12000000, 88200, 136, 0x1f, 0x1},
 396
 397         /* 96k */
 398         {12288000, 96000, 128, 0xe, 0x0},
 399         {18432000, 96000, 192, 0xf, 0x0},
 400         {12000000, 96000, 125, 0xe, 0x1},
 401 };
 402
 403 static int get_coeff(int mclk, int rate)
 404 {
 405         int i;
 406
 407         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 408                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 409                         return i;
 410         }
 411         return -EINVAL;
 412 }
 413
 414 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 415                 int clk_id, unsigned int freq, int dir)
 416 {
 417         struct snd_soc_codec *codec = codec_dai->codec;
 418         struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
 419
 420         switch (freq) {
 421         case 11289600:
 422         case 12000000:
 423         case 12288000:
 424         case 16934400:
 425         case 18432000:
 426                 wm8971->sysclk = freq;
 427                 return 0;
 428         }
 429         return -EINVAL;
 430 }
 431
 432 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
 433                 unsigned int fmt)
 434 {
 435         struct snd_soc_codec *codec = codec_dai->codec;
 436         u16 iface = 0;
 437
 438         /* set master/slave audio interface */
 439         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 440         case SND_SOC_DAIFMT_CBM_CFM:
 441                 iface = 0x0040;
 442                 break;
 443         case SND_SOC_DAIFMT_CBS_CFS:
 444                 break;
 445         default:
 446                 return -EINVAL;
 447         }
 448
 449         /* interface format */
 450         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 451         case SND_SOC_DAIFMT_I2S:
 452                 iface |= 0x0002;
 453                 break;
 454         case SND_SOC_DAIFMT_RIGHT_J:
 455                 break;
 456         case SND_SOC_DAIFMT_LEFT_J:
 457                 iface |= 0x0001;
 458                 break;
 459         case SND_SOC_DAIFMT_DSP_A:
 460                 iface |= 0x0003;
 461                 break;
 462         case SND_SOC_DAIFMT_DSP_B:
 463                 iface |= 0x0013;
 464                 break;
 465         default:
 466                 return -EINVAL;
 467         }
 468
 469         /* clock inversion */
 470         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 471         case SND_SOC_DAIFMT_NB_NF:
 472                 break;
 473         case SND_SOC_DAIFMT_IB_IF:
 474                 iface |= 0x0090;
 475                 break;
 476         case SND_SOC_DAIFMT_IB_NF:
 477                 iface |= 0x0080;
 478                 break;
 479         case SND_SOC_DAIFMT_NB_IF:
 480                 iface |= 0x0010;
 481                 break;
 482         default:
 483                 return -EINVAL;
 484         }
 485
 486         snd_soc_write(codec, WM8971_IFACE, iface);
 487         return 0;
 488 }
 489
 490 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
 491         struct snd_pcm_hw_params *params,
 492         struct snd_soc_dai *dai)
 493 {
 494         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 495         struct snd_soc_device *socdev = rtd->socdev;
 496         struct snd_soc_codec *codec = socdev->card->codec;
 497         struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
 498         u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
 499         u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
 500         int coeff = get_coeff(wm8971->sysclk, params_rate(params));
 501
 502         /* bit size */
 503         switch (params_format(params)) {
 504         case SNDRV_PCM_FORMAT_S16_LE:
 505                 break;
 506         case SNDRV_PCM_FORMAT_S20_3LE:
 507                 iface |= 0x0004;
 508                 break;
 509         case SNDRV_PCM_FORMAT_S24_LE:
 510                 iface |= 0x0008;
 511                 break;
 512         case SNDRV_PCM_FORMAT_S32_LE:
 513                 iface |= 0x000c;
 514                 break;
 515         }
 516
 517         /* set iface & srate */
 518         snd_soc_write(codec, WM8971_IFACE, iface);
 519         if (coeff >= 0)
 520                 snd_soc_write(codec, WM8971_SRATE, srate |
 521                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 522
 523         return 0;
 524 }
 525
 526 static int wm8971_mute(struct snd_soc_dai *dai, int mute)
 527 {
 528         struct snd_soc_codec *codec = dai->codec;
 529         u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7;
 530
 531         if (mute)
 532                 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
 533         else
 534                 snd_soc_write(codec, WM8971_ADCDAC, mute_reg);
 535         return 0;
 536 }
 537
 538 static int wm8971_set_bias_level(struct snd_soc_codec *codec,
 539         enum snd_soc_bias_level level)
 540 {
 541         u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 542
 543         switch (level) {
 544         case SND_SOC_BIAS_ON:
 545                 /* set vmid to 50k and unmute dac */
 546                 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
 547                 break;
 548         case SND_SOC_BIAS_PREPARE:
 549                 break;
 550         case SND_SOC_BIAS_STANDBY:
 551                 /* mute dac and set vmid to 500k, enable VREF */
 552                 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
 553                 break;
 554         case SND_SOC_BIAS_OFF:
 555                 snd_soc_write(codec, WM8971_PWR1, 0x0001);
 556                 break;
 557         }
 558         codec->bias_level = level;
 559         return 0;
 560 }
 561
 562 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 563                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 564                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 565
 566 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 567         SNDRV_PCM_FMTBIT_S24_LE)
 568
 569 static struct snd_soc_dai_ops wm8971_dai_ops = {
 570         .hw_params      = wm8971_pcm_hw_params,
 571         .digital_mute   = wm8971_mute,
 572         .set_fmt        = wm8971_set_dai_fmt,
 573         .set_sysclk     = wm8971_set_dai_sysclk,
 574 };
 575
 576 struct snd_soc_dai wm8971_dai = {
 577         .name = "WM8971",
 578         .playback = {
 579                 .stream_name = "Playback",
 580                 .channels_min = 1,
 581                 .channels_max = 2,
 582                 .rates = WM8971_RATES,
 583                 .formats = WM8971_FORMATS,},
 584         .capture = {
 585                 .stream_name = "Capture",
 586                 .channels_min = 1,
 587                 .channels_max = 2,
 588                 .rates = WM8971_RATES,
 589                 .formats = WM8971_FORMATS,},
 590         .ops = &wm8971_dai_ops,
 591 };
 592 EXPORT_SYMBOL_GPL(wm8971_dai);
 593
 594 static void wm8971_work(struct work_struct *work)
 595 {
 596         struct snd_soc_codec *codec =
 597                 container_of(work, struct snd_soc_codec, delayed_work.work);
 598         wm8971_set_bias_level(codec, codec->bias_level);
 599 }
 600
 601 static int wm8971_suspend(struct platform_device *pdev, pm_message_t state)
 602 {
 603         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 604         struct snd_soc_codec *codec = socdev->card->codec;
 605
 606         wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 607         return 0;
 608 }
 609
 610 static int wm8971_resume(struct platform_device *pdev)
 611 {
 612         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 613         struct snd_soc_codec *codec = socdev->card->codec;
 614         int i;
 615         u8 data[2];
 616         u16 *cache = codec->reg_cache;
 617         u16 reg;
 618
 619         /* Sync reg_cache with the hardware */
 620         for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) {
 621                 if (i + 1 == WM8971_RESET)
 622                         continue;
 623                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 624                 data[1] = cache[i] & 0x00ff;
 625                 codec->hw_write(codec->control_data, data, 2);
 626         }
 627
 628         wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 629
 630         /* charge wm8971 caps */
 631         if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
 632                 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 633                 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
 634                 codec->bias_level = SND_SOC_BIAS_ON;
 635                 queue_delayed_work(wm8971_workq, &codec->delayed_work,
 636                         msecs_to_jiffies(1000));
 637         }
 638
 639         return 0;
 640 }
 641
 642 static int wm8971_init(struct snd_soc_device *socdev,
 643                        enum snd_soc_control_type control)
 644 {
 645         struct snd_soc_codec *codec = socdev->card->codec;
 646         int reg, ret = 0;
 647
 648         codec->name = "WM8971";
 649         codec->owner = THIS_MODULE;
 650         codec->set_bias_level = wm8971_set_bias_level;
 651         codec->dai = &wm8971_dai;
 652         codec->reg_cache_size = ARRAY_SIZE(wm8971_reg);
 653         codec->num_dai = 1;
 654         codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL);
 655
 656         if (codec->reg_cache == NULL)
 657                 return -ENOMEM;
 658
 659         ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
 660         if (ret < 0) {
 661                 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret);
 662                 goto err;
 663         }
 664
 665         wm8971_reset(codec);
 666
 667         /* register pcms */
 668         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 669         if (ret < 0) {
 670                 printk(KERN_ERR "wm8971: failed to create pcms\n");
 671                 goto err;
 672         }
 673
 674         /* charge output caps - set vmid to 5k for quick power up */
 675         reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 676         snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
 677         codec->bias_level = SND_SOC_BIAS_STANDBY;
 678         queue_delayed_work(wm8971_workq, &codec->delayed_work,
 679                 msecs_to_jiffies(1000));
 680
 681         /* set the update bits */
 682         reg = snd_soc_read(codec, WM8971_LDAC);
 683         snd_soc_write(codec, WM8971_LDAC, reg | 0x0100);
 684         reg = snd_soc_read(codec, WM8971_RDAC);
 685         snd_soc_write(codec, WM8971_RDAC, reg | 0x0100);
 686
 687         reg = snd_soc_read(codec, WM8971_LOUT1V);
 688         snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100);
 689         reg = snd_soc_read(codec, WM8971_ROUT1V);
 690         snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100);
 691
 692         reg = snd_soc_read(codec, WM8971_LOUT2V);
 693         snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100);
 694         reg = snd_soc_read(codec, WM8971_ROUT2V);
 695         snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100);
 696
 697         reg = snd_soc_read(codec, WM8971_LINVOL);
 698         snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100);
 699         reg = snd_soc_read(codec, WM8971_RINVOL);
 700         snd_soc_write(codec, WM8971_RINVOL, reg | 0x0100);
 701
 702         snd_soc_add_controls(codec, wm8971_snd_controls,
 703                                 ARRAY_SIZE(wm8971_snd_controls));
 704         wm8971_add_widgets(codec);
 705
 706         return ret;
 707
 708 err:
 709         kfree(codec->reg_cache);
 710         return ret;
 711 }
 712
 713 /* If the i2c layer weren't so broken, we could pass this kind of data
 714    around */
 715 static struct snd_soc_device *wm8971_socdev;
 716
 717 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 718
 719 static int wm8971_i2c_probe(struct i2c_client *i2c,
 720                             const struct i2c_device_id *id)
 721 {
 722         struct snd_soc_device *socdev = wm8971_socdev;
 723         struct snd_soc_codec *codec = socdev->card->codec;
 724         int ret;
 725
 726         i2c_set_clientdata(i2c, codec);
 727
 728         codec->control_data = i2c;
 729
 730         ret = wm8971_init(socdev, SND_SOC_I2C);
 731         if (ret < 0)
 732                 pr_err("failed to initialise WM8971\n");
 733
 734         return ret;
 735 }
 736
 737 static int wm8971_i2c_remove(struct i2c_client *client)
 738 {
 739         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 740         kfree(codec->reg_cache);
 741         return 0;
 742 }
 743
 744 static const struct i2c_device_id wm8971_i2c_id[] = {
 745         { "wm8971", 0 },
 746         { }
 747 };
 748 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
 749
 750 static struct i2c_driver wm8971_i2c_driver = {
 751         .driver = {
 752                 .name = "WM8971 I2C Codec",
 753                 .owner = THIS_MODULE,
 754         },
 755         .probe    = wm8971_i2c_probe,
 756         .remove   = wm8971_i2c_remove,
 757         .id_table = wm8971_i2c_id,
 758 };
 759
 760 static int wm8971_add_i2c_device(struct platform_device *pdev,
 761                                  const struct wm8971_setup_data *setup)
 762 {
 763         struct i2c_board_info info;
 764         struct i2c_adapter *adapter;
 765         struct i2c_client *client;
 766         int ret;
 767
 768         ret = i2c_add_driver(&wm8971_i2c_driver);
 769         if (ret != 0) {
 770                 dev_err(&pdev->dev, "can't add i2c driver\n");
 771                 return ret;
 772         }
 773
 774         memset(&info, 0, sizeof(struct i2c_board_info));
 775         info.addr = setup->i2c_address;
 776         strlcpy(info.type, "wm8971", I2C_NAME_SIZE);
 777
 778         adapter = i2c_get_adapter(setup->i2c_bus);
 779         if (!adapter) {
 780                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 781                         setup->i2c_bus);
 782                 goto err_driver;
 783         }
 784
 785         client = i2c_new_device(adapter, &info);
 786         i2c_put_adapter(adapter);
 787         if (!client) {
 788                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 789                         (unsigned int)info.addr);
 790                 goto err_driver;
 791         }
 792
 793         return 0;
 794
 795 err_driver:
 796         i2c_del_driver(&wm8971_i2c_driver);
 797         return -ENODEV;
 798 }
 799
 800 #endif
 801
 802 static int wm8971_probe(struct platform_device *pdev)
 803 {
 804         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 805         struct wm8971_setup_data *setup;
 806         struct snd_soc_codec *codec;
 807         struct wm8971_priv *wm8971;
 808         int ret = 0;
 809
 810         pr_info("WM8971 Audio Codec %s", WM8971_VERSION);
 811
 812         setup = socdev->codec_data;
 813         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 814         if (codec == NULL)
 815                 return -ENOMEM;
 816
 817         wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
 818         if (wm8971 == NULL) {
 819                 kfree(codec);
 820                 return -ENOMEM;
 821         }
 822
 823         snd_soc_codec_set_drvdata(codec, wm8971);
 824         socdev->card->codec = codec;
 825         mutex_init(&codec->mutex);
 826         INIT_LIST_HEAD(&codec->dapm_widgets);
 827         INIT_LIST_HEAD(&codec->dapm_paths);
 828         wm8971_socdev = socdev;
 829
 830         INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
 831         wm8971_workq = create_workqueue("wm8971");
 832         if (wm8971_workq == NULL) {
 833                 kfree(snd_soc_codec_get_drvdata(codec));
 834                 kfree(codec);
 835                 return -ENOMEM;
 836         }
 837
 838 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 839         if (setup->i2c_address) {
 840                 ret = wm8971_add_i2c_device(pdev, setup);
 841         }
 842 #endif
 843         /* Add other interfaces here */
 844
 845         if (ret != 0) {
 846                 destroy_workqueue(wm8971_workq);
 847                 kfree(snd_soc_codec_get_drvdata(codec));
 848                 kfree(codec);
 849         }
 850
 851         return ret;
 852 }
 853
 854 /* power down chip */
 855 static int wm8971_remove(struct platform_device *pdev)
 856 {
 857         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 858         struct snd_soc_codec *codec = socdev->card->codec;
 859
 860         if (codec->control_data)
 861                 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 862         if (wm8971_workq)
 863                 destroy_workqueue(wm8971_workq);
 864         snd_soc_free_pcms(socdev);
 865         snd_soc_dapm_free(socdev);
 866 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 867         i2c_unregister_device(codec->control_data);
 868         i2c_del_driver(&wm8971_i2c_driver);
 869 #endif
 870         kfree(snd_soc_codec_get_drvdata(codec));
 871         kfree(codec);
 872
 873         return 0;
 874 }
 875
 876 struct snd_soc_codec_device soc_codec_dev_wm8971 = {
 877         .probe =        wm8971_probe,
 878         .remove =       wm8971_remove,
 879         .suspend =      wm8971_suspend,
 880         .resume =       wm8971_resume,
 881 };
 882
 883 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971);
 884
 885 static int __init wm8971_modinit(void)
 886 {
 887         return snd_soc_register_dai(&wm8971_dai);
 888 }
 889 module_init(wm8971_modinit);
 890
 891 static void __exit wm8971_exit(void)
 892 {
 893         snd_soc_unregister_dai(&wm8971_dai);
 894 }
 895 module_exit(wm8971_exit);
 896
 897 MODULE_DESCRIPTION("ASoC WM8971 driver");
 898 MODULE_AUTHOR("Lab126");
 899 MODULE_LICENSE("GPL");