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 #define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0)
  63
  64 /* WM8971 Controls */
  65 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
  66 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
  67         "200Hz @ 48kHz" };
  68 static const char *wm8971_treble[] = { "8kHz", "4kHz" };
  69 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
  70 static const char *wm8971_ng_type[] = { "Constant PGA Gain",
  71         "Mute ADC Output" };
  72 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
  73 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
  74         "Mono (Right)", "Digital Mono"};
  75 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
  76 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
  77         "Differential"};
  78 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
  79         "Differential"};
  80 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
  81 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
  82 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
  83         "L + R Invert"};
  84
  85 static const struct soc_enum wm8971_enum[] = {
  86         SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass),        /* 0 */
  87         SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
  88         SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
  89         SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
  90         SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type),    /* 4 */
  91         SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
  92         SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
  93         SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
  94         SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
  95         SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
  96         SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
  97         SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
  98         SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol),    /* 12 */
  99         SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
 100 };
 101
 102 static const struct snd_kcontrol_new wm8971_snd_controls[] = {
 103         SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
 104         SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
 105                      6, 1, 0),
 106         SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
 107
 108         SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
 109                 WM8971_ROUT1V, 7, 1, 0),
 110         SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
 111                 WM8971_ROUT2V, 7, 1, 0),
 112         SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
 113
 114         SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
 115
 116         SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
 117                 WM8971_LOUTM2, 4, 7, 1),
 118         SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
 119                 WM8971_ROUTM2, 4, 7, 1),
 120         SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
 121                 WM8971_MOUTM2, 4, 7, 1),
 122
 123         SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
 124                 WM8971_ROUT1V, 0, 127, 0),
 125         SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
 126                 WM8971_ROUT2V, 0, 127, 0),
 127
 128         SOC_ENUM("Bass Boost", wm8971_enum[0]),
 129         SOC_ENUM("Bass Filter", wm8971_enum[1]),
 130         SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
 131
 132         SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
 133         SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
 134
 135         SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
 136
 137         SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
 138         SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
 139
 140         SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
 141         SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
 142         SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
 143         SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
 144         SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
 145         SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
 146         SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
 147         SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
 148         SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
 149         SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
 150
 151         SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
 152         SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
 153
 154         SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
 155         SOC_ENUM("Playback Function", wm8971_enum[6]),
 156         SOC_ENUM("Playback Phase", wm8971_enum[7]),
 157
 158         SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
 159 };
 160
 161 /*
 162  * DAPM Controls
 163  */
 164
 165 /* Left Mixer */
 166 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
 167 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
 168 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
 169 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
 170 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
 171 };
 172
 173 /* Right Mixer */
 174 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
 175 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
 176 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
 177 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
 178 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
 179 };
 180
 181 /* Mono Mixer */
 182 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
 183 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
 184 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
 185 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
 186 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
 187 };
 188
 189 /* Left Line Mux */
 190 static const struct snd_kcontrol_new wm8971_left_line_controls =
 191 SOC_DAPM_ENUM("Route", wm8971_enum[8]);
 192
 193 /* Right Line Mux */
 194 static const struct snd_kcontrol_new wm8971_right_line_controls =
 195 SOC_DAPM_ENUM("Route", wm8971_enum[9]);
 196
 197 /* Left PGA Mux */
 198 static const struct snd_kcontrol_new wm8971_left_pga_controls =
 199 SOC_DAPM_ENUM("Route", wm8971_enum[10]);
 200
 201 /* Right PGA Mux */
 202 static const struct snd_kcontrol_new wm8971_right_pga_controls =
 203 SOC_DAPM_ENUM("Route", wm8971_enum[11]);
 204
 205 /* Mono ADC Mux */
 206 static const struct snd_kcontrol_new wm8971_monomux_controls =
 207 SOC_DAPM_ENUM("Route", wm8971_enum[13]);
 208
 209 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
 210         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 211                 &wm8971_left_mixer_controls[0],
 212                 ARRAY_SIZE(wm8971_left_mixer_controls)),
 213         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 214                 &wm8971_right_mixer_controls[0],
 215                 ARRAY_SIZE(wm8971_right_mixer_controls)),
 216         SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
 217                 &wm8971_mono_mixer_controls[0],
 218                 ARRAY_SIZE(wm8971_mono_mixer_controls)),
 219
 220         SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
 221         SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
 222         SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
 223         SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
 224         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
 225         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
 226         SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
 227
 228         SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0),
 229         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
 230         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
 231
 232         SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
 233                 &wm8971_left_pga_controls),
 234         SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
 235                 &wm8971_right_pga_controls),
 236         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 237                 &wm8971_left_line_controls),
 238         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 239                 &wm8971_right_line_controls),
 240
 241         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 242                 &wm8971_monomux_controls),
 243         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 244                 &wm8971_monomux_controls),
 245
 246         SND_SOC_DAPM_OUTPUT("LOUT1"),
 247         SND_SOC_DAPM_OUTPUT("ROUT1"),
 248         SND_SOC_DAPM_OUTPUT("LOUT2"),
 249         SND_SOC_DAPM_OUTPUT("ROUT2"),
 250         SND_SOC_DAPM_OUTPUT("MONO"),
 251
 252         SND_SOC_DAPM_INPUT("LINPUT1"),
 253         SND_SOC_DAPM_INPUT("RINPUT1"),
 254         SND_SOC_DAPM_INPUT("MIC"),
 255 };
 256
 257 static const struct snd_soc_dapm_route audio_map[] = {
 258         /* left mixer */
 259         {"Left Mixer", "Playback Switch", "Left DAC"},
 260         {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
 261         {"Left Mixer", "Right Playback Switch", "Right DAC"},
 262         {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
 263
 264         /* right mixer */
 265         {"Right Mixer", "Left Playback Switch", "Left DAC"},
 266         {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
 267         {"Right Mixer", "Playback Switch", "Right DAC"},
 268         {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
 269
 270         /* left out 1 */
 271         {"Left Out 1", NULL, "Left Mixer"},
 272         {"LOUT1", NULL, "Left Out 1"},
 273
 274         /* left out 2 */
 275         {"Left Out 2", NULL, "Left Mixer"},
 276         {"LOUT2", NULL, "Left Out 2"},
 277
 278         /* right out 1 */
 279         {"Right Out 1", NULL, "Right Mixer"},
 280         {"ROUT1", NULL, "Right Out 1"},
 281
 282         /* right out 2 */
 283         {"Right Out 2", NULL, "Right Mixer"},
 284         {"ROUT2", NULL, "Right Out 2"},
 285
 286         /* mono mixer */
 287         {"Mono Mixer", "Left Playback Switch", "Left DAC"},
 288         {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
 289         {"Mono Mixer", "Right Playback Switch", "Right DAC"},
 290         {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
 291
 292         /* mono out */
 293         {"Mono Out", NULL, "Mono Mixer"},
 294         {"MONO1", NULL, "Mono Out"},
 295
 296         /* Left Line Mux */
 297         {"Left Line Mux", "Line", "LINPUT1"},
 298         {"Left Line Mux", "PGA", "Left PGA Mux"},
 299         {"Left Line Mux", "Differential", "Differential Mux"},
 300
 301         /* Right Line Mux */
 302         {"Right Line Mux", "Line", "RINPUT1"},
 303         {"Right Line Mux", "Mic", "MIC"},
 304         {"Right Line Mux", "PGA", "Right PGA Mux"},
 305         {"Right Line Mux", "Differential", "Differential Mux"},
 306
 307         /* Left PGA Mux */
 308         {"Left PGA Mux", "Line", "LINPUT1"},
 309         {"Left PGA Mux", "Differential", "Differential Mux"},
 310
 311         /* Right PGA Mux */
 312         {"Right PGA Mux", "Line", "RINPUT1"},
 313         {"Right PGA Mux", "Differential", "Differential Mux"},
 314
 315         /* Differential Mux */
 316         {"Differential Mux", "Line", "LINPUT1"},
 317         {"Differential Mux", "Line", "RINPUT1"},
 318
 319         /* Left ADC Mux */
 320         {"Left ADC Mux", "Stereo", "Left PGA Mux"},
 321         {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
 322         {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
 323
 324         /* Right ADC Mux */
 325         {"Right ADC Mux", "Stereo", "Right PGA Mux"},
 326         {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
 327         {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
 328
 329         /* ADC */
 330         {"Left ADC", NULL, "Left ADC Mux"},
 331         {"Right ADC", NULL, "Right ADC Mux"},
 332 };
 333
 334 static int wm8971_add_widgets(struct snd_soc_codec *codec)
 335 {
 336         snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets,
 337                                   ARRAY_SIZE(wm8971_dapm_widgets));
 338
 339         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 340
 341         snd_soc_dapm_new_widgets(codec);
 342
 343         return 0;
 344 }
 345
 346 struct _coeff_div {
 347         u32 mclk;
 348         u32 rate;
 349         u16 fs;
 350         u8 sr:5;
 351         u8 usb:1;
 352 };
 353
 354 /* codec hifi mclk clock divider coefficients */
 355 static const struct _coeff_div coeff_div[] = {
 356         /* 8k */
 357         {12288000, 8000, 1536, 0x6, 0x0},
 358         {11289600, 8000, 1408, 0x16, 0x0},
 359         {18432000, 8000, 2304, 0x7, 0x0},
 360         {16934400, 8000, 2112, 0x17, 0x0},
 361         {12000000, 8000, 1500, 0x6, 0x1},
 362
 363         /* 11.025k */
 364         {11289600, 11025, 1024, 0x18, 0x0},
 365         {16934400, 11025, 1536, 0x19, 0x0},
 366         {12000000, 11025, 1088, 0x19, 0x1},
 367
 368         /* 16k */
 369         {12288000, 16000, 768, 0xa, 0x0},
 370         {18432000, 16000, 1152, 0xb, 0x0},
 371         {12000000, 16000, 750, 0xa, 0x1},
 372
 373         /* 22.05k */
 374         {11289600, 22050, 512, 0x1a, 0x0},
 375         {16934400, 22050, 768, 0x1b, 0x0},
 376         {12000000, 22050, 544, 0x1b, 0x1},
 377
 378         /* 32k */
 379         {12288000, 32000, 384, 0xc, 0x0},
 380         {18432000, 32000, 576, 0xd, 0x0},
 381         {12000000, 32000, 375, 0xa, 0x1},
 382
 383         /* 44.1k */
 384         {11289600, 44100, 256, 0x10, 0x0},
 385         {16934400, 44100, 384, 0x11, 0x0},
 386         {12000000, 44100, 272, 0x11, 0x1},
 387
 388         /* 48k */
 389         {12288000, 48000, 256, 0x0, 0x0},
 390         {18432000, 48000, 384, 0x1, 0x0},
 391         {12000000, 48000, 250, 0x0, 0x1},
 392
 393         /* 88.2k */
 394         {11289600, 88200, 128, 0x1e, 0x0},
 395         {16934400, 88200, 192, 0x1f, 0x0},
 396         {12000000, 88200, 136, 0x1f, 0x1},
 397
 398         /* 96k */
 399         {12288000, 96000, 128, 0xe, 0x0},
 400         {18432000, 96000, 192, 0xf, 0x0},
 401         {12000000, 96000, 125, 0xe, 0x1},
 402 };
 403
 404 static int get_coeff(int mclk, int rate)
 405 {
 406         int i;
 407
 408         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 409                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 410                         return i;
 411         }
 412         return -EINVAL;
 413 }
 414
 415 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 416                 int clk_id, unsigned int freq, int dir)
 417 {
 418         struct snd_soc_codec *codec = codec_dai->codec;
 419         struct wm8971_priv *wm8971 = codec->private_data;
 420
 421         switch (freq) {
 422         case 11289600:
 423         case 12000000:
 424         case 12288000:
 425         case 16934400:
 426         case 18432000:
 427                 wm8971->sysclk = freq;
 428                 return 0;
 429         }
 430         return -EINVAL;
 431 }
 432
 433 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
 434                 unsigned int fmt)
 435 {
 436         struct snd_soc_codec *codec = codec_dai->codec;
 437         u16 iface = 0;
 438
 439         /* set master/slave audio interface */
 440         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 441         case SND_SOC_DAIFMT_CBM_CFM:
 442                 iface = 0x0040;
 443                 break;
 444         case SND_SOC_DAIFMT_CBS_CFS:
 445                 break;
 446         default:
 447                 return -EINVAL;
 448         }
 449
 450         /* interface format */
 451         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 452         case SND_SOC_DAIFMT_I2S:
 453                 iface |= 0x0002;
 454                 break;
 455         case SND_SOC_DAIFMT_RIGHT_J:
 456                 break;
 457         case SND_SOC_DAIFMT_LEFT_J:
 458                 iface |= 0x0001;
 459                 break;
 460         case SND_SOC_DAIFMT_DSP_A:
 461                 iface |= 0x0003;
 462                 break;
 463         case SND_SOC_DAIFMT_DSP_B:
 464                 iface |= 0x0013;
 465                 break;
 466         default:
 467                 return -EINVAL;
 468         }
 469
 470         /* clock inversion */
 471         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 472         case SND_SOC_DAIFMT_NB_NF:
 473                 break;
 474         case SND_SOC_DAIFMT_IB_IF:
 475                 iface |= 0x0090;
 476                 break;
 477         case SND_SOC_DAIFMT_IB_NF:
 478                 iface |= 0x0080;
 479                 break;
 480         case SND_SOC_DAIFMT_NB_IF:
 481                 iface |= 0x0010;
 482                 break;
 483         default:
 484                 return -EINVAL;
 485         }
 486
 487         snd_soc_write(codec, WM8971_IFACE, iface);
 488         return 0;
 489 }
 490
 491 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
 492         struct snd_pcm_hw_params *params,
 493         struct snd_soc_dai *dai)
 494 {
 495         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 496         struct snd_soc_device *socdev = rtd->socdev;
 497         struct snd_soc_codec *codec = socdev->card->codec;
 498         struct wm8971_priv *wm8971 = codec->private_data;
 499         u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
 500         u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
 501         int coeff = get_coeff(wm8971->sysclk, params_rate(params));
 502
 503         /* bit size */
 504         switch (params_format(params)) {
 505         case SNDRV_PCM_FORMAT_S16_LE:
 506                 break;
 507         case SNDRV_PCM_FORMAT_S20_3LE:
 508                 iface |= 0x0004;
 509                 break;
 510         case SNDRV_PCM_FORMAT_S24_LE:
 511                 iface |= 0x0008;
 512                 break;
 513         case SNDRV_PCM_FORMAT_S32_LE:
 514                 iface |= 0x000c;
 515                 break;
 516         }
 517
 518         /* set iface & srate */
 519         snd_soc_write(codec, WM8971_IFACE, iface);
 520         if (coeff >= 0)
 521                 snd_soc_write(codec, WM8971_SRATE, srate |
 522                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 523
 524         return 0;
 525 }
 526
 527 static int wm8971_mute(struct snd_soc_dai *dai, int mute)
 528 {
 529         struct snd_soc_codec *codec = dai->codec;
 530         u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7;
 531
 532         if (mute)
 533                 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
 534         else
 535                 snd_soc_write(codec, WM8971_ADCDAC, mute_reg);
 536         return 0;
 537 }
 538
 539 static int wm8971_set_bias_level(struct snd_soc_codec *codec,
 540         enum snd_soc_bias_level level)
 541 {
 542         u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 543
 544         switch (level) {
 545         case SND_SOC_BIAS_ON:
 546                 /* set vmid to 50k and unmute dac */
 547                 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
 548                 break;
 549         case SND_SOC_BIAS_PREPARE:
 550                 break;
 551         case SND_SOC_BIAS_STANDBY:
 552                 /* mute dac and set vmid to 500k, enable VREF */
 553                 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
 554                 break;
 555         case SND_SOC_BIAS_OFF:
 556                 snd_soc_write(codec, WM8971_PWR1, 0x0001);
 557                 break;
 558         }
 559         codec->bias_level = level;
 560         return 0;
 561 }
 562
 563 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 564                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 565                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 566
 567 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 568         SNDRV_PCM_FMTBIT_S24_LE)
 569
 570 static struct snd_soc_dai_ops wm8971_dai_ops = {
 571         .hw_params      = wm8971_pcm_hw_params,
 572         .digital_mute   = wm8971_mute,
 573         .set_fmt        = wm8971_set_dai_fmt,
 574         .set_sysclk     = wm8971_set_dai_sysclk,
 575 };
 576
 577 struct snd_soc_dai wm8971_dai = {
 578         .name = "WM8971",
 579         .playback = {
 580                 .stream_name = "Playback",
 581                 .channels_min = 1,
 582                 .channels_max = 2,
 583                 .rates = WM8971_RATES,
 584                 .formats = WM8971_FORMATS,},
 585         .capture = {
 586                 .stream_name = "Capture",
 587                 .channels_min = 1,
 588                 .channels_max = 2,
 589                 .rates = WM8971_RATES,
 590                 .formats = WM8971_FORMATS,},
 591         .ops = &wm8971_dai_ops,
 592 };
 593 EXPORT_SYMBOL_GPL(wm8971_dai);
 594
 595 static void wm8971_work(struct work_struct *work)
 596 {
 597         struct snd_soc_codec *codec =
 598                 container_of(work, struct snd_soc_codec, delayed_work.work);
 599         wm8971_set_bias_level(codec, codec->bias_level);
 600 }
 601
 602 static int wm8971_suspend(struct platform_device *pdev, pm_message_t state)
 603 {
 604         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 605         struct snd_soc_codec *codec = socdev->card->codec;
 606
 607         wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 608         return 0;
 609 }
 610
 611 static int wm8971_resume(struct platform_device *pdev)
 612 {
 613         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 614         struct snd_soc_codec *codec = socdev->card->codec;
 615         int i;
 616         u8 data[2];
 617         u16 *cache = codec->reg_cache;
 618         u16 reg;
 619
 620         /* Sync reg_cache with the hardware */
 621         for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) {
 622                 if (i + 1 == WM8971_RESET)
 623                         continue;
 624                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 625                 data[1] = cache[i] & 0x00ff;
 626                 codec->hw_write(codec->control_data, data, 2);
 627         }
 628
 629         wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 630
 631         /* charge wm8971 caps */
 632         if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
 633                 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 634                 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
 635                 codec->bias_level = SND_SOC_BIAS_ON;
 636                 queue_delayed_work(wm8971_workq, &codec->delayed_work,
 637                         msecs_to_jiffies(1000));
 638         }
 639
 640         return 0;
 641 }
 642
 643 static int wm8971_init(struct snd_soc_device *socdev,
 644                        enum snd_soc_control_type control)
 645 {
 646         struct snd_soc_codec *codec = socdev->card->codec;
 647         int reg, ret = 0;
 648
 649         codec->name = "WM8971";
 650         codec->owner = THIS_MODULE;
 651         codec->set_bias_level = wm8971_set_bias_level;
 652         codec->dai = &wm8971_dai;
 653         codec->reg_cache_size = ARRAY_SIZE(wm8971_reg);
 654         codec->num_dai = 1;
 655         codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL);
 656
 657         if (codec->reg_cache == NULL)
 658                 return -ENOMEM;
 659
 660         ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
 661         if (ret < 0) {
 662                 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret);
 663                 goto err;
 664         }
 665
 666         wm8971_reset(codec);
 667
 668         /* register pcms */
 669         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 670         if (ret < 0) {
 671                 printk(KERN_ERR "wm8971: failed to create pcms\n");
 672                 goto err;
 673         }
 674
 675         /* charge output caps - set vmid to 5k for quick power up */
 676         reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 677         snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
 678         codec->bias_level = SND_SOC_BIAS_STANDBY;
 679         queue_delayed_work(wm8971_workq, &codec->delayed_work,
 680                 msecs_to_jiffies(1000));
 681
 682         /* set the update bits */
 683         reg = snd_soc_read(codec, WM8971_LDAC);
 684         snd_soc_write(codec, WM8971_LDAC, reg | 0x0100);
 685         reg = snd_soc_read(codec, WM8971_RDAC);
 686         snd_soc_write(codec, WM8971_RDAC, reg | 0x0100);
 687
 688         reg = snd_soc_read(codec, WM8971_LOUT1V);
 689         snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100);
 690         reg = snd_soc_read(codec, WM8971_ROUT1V);
 691         snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100);
 692
 693         reg = snd_soc_read(codec, WM8971_LOUT2V);
 694         snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100);
 695         reg = snd_soc_read(codec, WM8971_ROUT2V);
 696         snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100);
 697
 698         reg = snd_soc_read(codec, WM8971_LINVOL);
 699         snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100);
 700         reg = snd_soc_read(codec, WM8971_RINVOL);
 701         snd_soc_write(codec, WM8971_RINVOL, reg | 0x0100);
 702
 703         snd_soc_add_controls(codec, wm8971_snd_controls,
 704                                 ARRAY_SIZE(wm8971_snd_controls));
 705         wm8971_add_widgets(codec);
 706         ret = snd_soc_init_card(socdev);
 707         if (ret < 0) {
 708                 printk(KERN_ERR "wm8971: failed to register card\n");
 709                 goto card_err;
 710         }
 711         return ret;
 712
 713 card_err:
 714         snd_soc_free_pcms(socdev);
 715         snd_soc_dapm_free(socdev);
 716 err:
 717         kfree(codec->reg_cache);
 718         return ret;
 719 }
 720
 721 /* If the i2c layer weren't so broken, we could pass this kind of data
 722    around */
 723 static struct snd_soc_device *wm8971_socdev;
 724
 725 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 726
 727 static int wm8971_i2c_probe(struct i2c_client *i2c,
 728                             const struct i2c_device_id *id)
 729 {
 730         struct snd_soc_device *socdev = wm8971_socdev;
 731         struct snd_soc_codec *codec = socdev->card->codec;
 732         int ret;
 733
 734         i2c_set_clientdata(i2c, codec);
 735
 736         codec->control_data = i2c;
 737
 738         ret = wm8971_init(socdev, SND_SOC_I2C);
 739         if (ret < 0)
 740                 pr_err("failed to initialise WM8971\n");
 741
 742         return ret;
 743 }
 744
 745 static int wm8971_i2c_remove(struct i2c_client *client)
 746 {
 747         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 748         kfree(codec->reg_cache);
 749         return 0;
 750 }
 751
 752 static const struct i2c_device_id wm8971_i2c_id[] = {
 753         { "wm8971", 0 },
 754         { }
 755 };
 756 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
 757
 758 static struct i2c_driver wm8971_i2c_driver = {
 759         .driver = {
 760                 .name = "WM8971 I2C Codec",
 761                 .owner = THIS_MODULE,
 762         },
 763         .probe    = wm8971_i2c_probe,
 764         .remove   = wm8971_i2c_remove,
 765         .id_table = wm8971_i2c_id,
 766 };
 767
 768 static int wm8971_add_i2c_device(struct platform_device *pdev,
 769                                  const struct wm8971_setup_data *setup)
 770 {
 771         struct i2c_board_info info;
 772         struct i2c_adapter *adapter;
 773         struct i2c_client *client;
 774         int ret;
 775
 776         ret = i2c_add_driver(&wm8971_i2c_driver);
 777         if (ret != 0) {
 778                 dev_err(&pdev->dev, "can't add i2c driver\n");
 779                 return ret;
 780         }
 781
 782         memset(&info, 0, sizeof(struct i2c_board_info));
 783         info.addr = setup->i2c_address;
 784         strlcpy(info.type, "wm8971", I2C_NAME_SIZE);
 785
 786         adapter = i2c_get_adapter(setup->i2c_bus);
 787         if (!adapter) {
 788                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 789                         setup->i2c_bus);
 790                 goto err_driver;
 791         }
 792
 793         client = i2c_new_device(adapter, &info);
 794         i2c_put_adapter(adapter);
 795         if (!client) {
 796                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 797                         (unsigned int)info.addr);
 798                 goto err_driver;
 799         }
 800
 801         return 0;
 802
 803 err_driver:
 804         i2c_del_driver(&wm8971_i2c_driver);
 805         return -ENODEV;
 806 }
 807
 808 #endif
 809
 810 static int wm8971_probe(struct platform_device *pdev)
 811 {
 812         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 813         struct wm8971_setup_data *setup;
 814         struct snd_soc_codec *codec;
 815         struct wm8971_priv *wm8971;
 816         int ret = 0;
 817
 818         pr_info("WM8971 Audio Codec %s", WM8971_VERSION);
 819
 820         setup = socdev->codec_data;
 821         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 822         if (codec == NULL)
 823                 return -ENOMEM;
 824
 825         wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
 826         if (wm8971 == NULL) {
 827                 kfree(codec);
 828                 return -ENOMEM;
 829         }
 830
 831         codec->private_data = wm8971;
 832         socdev->card->codec = codec;
 833         mutex_init(&codec->mutex);
 834         INIT_LIST_HEAD(&codec->dapm_widgets);
 835         INIT_LIST_HEAD(&codec->dapm_paths);
 836         wm8971_socdev = socdev;
 837
 838         INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
 839         wm8971_workq = create_workqueue("wm8971");
 840         if (wm8971_workq == NULL) {
 841                 kfree(codec->private_data);
 842                 kfree(codec);
 843                 return -ENOMEM;
 844         }
 845
 846 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 847         if (setup->i2c_address) {
 848                 ret = wm8971_add_i2c_device(pdev, setup);
 849         }
 850 #endif
 851         /* Add other interfaces here */
 852
 853         if (ret != 0) {
 854                 destroy_workqueue(wm8971_workq);
 855                 kfree(codec->private_data);
 856                 kfree(codec);
 857         }
 858
 859         return ret;
 860 }
 861
 862 /* power down chip */
 863 static int wm8971_remove(struct platform_device *pdev)
 864 {
 865         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 866         struct snd_soc_codec *codec = socdev->card->codec;
 867
 868         if (codec->control_data)
 869                 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 870         if (wm8971_workq)
 871                 destroy_workqueue(wm8971_workq);
 872         snd_soc_free_pcms(socdev);
 873         snd_soc_dapm_free(socdev);
 874 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 875         i2c_unregister_device(codec->control_data);
 876         i2c_del_driver(&wm8971_i2c_driver);
 877 #endif
 878         kfree(codec->private_data);
 879         kfree(codec);
 880
 881         return 0;
 882 }
 883
 884 struct snd_soc_codec_device soc_codec_dev_wm8971 = {
 885         .probe =        wm8971_probe,
 886         .remove =       wm8971_remove,
 887         .suspend =      wm8971_suspend,
 888         .resume =       wm8971_resume,
 889 };
 890
 891 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971);
 892
 893 static int __init wm8971_modinit(void)
 894 {
 895         return snd_soc_register_dai(&wm8971_dai);
 896 }
 897 module_init(wm8971_modinit);
 898
 899 static void __exit wm8971_exit(void)
 900 {
 901         snd_soc_unregister_dai(&wm8971_dai);
 902 }
 903 module_exit(wm8971_exit);
 904
 905 MODULE_DESCRIPTION("ASoC WM8971 driver");
 906 MODULE_AUTHOR("Lab126");
 907 MODULE_LICENSE("GPL");