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/initval.h>
  29
  30 #include "wm8971.h"
  31
  32 #define WM8971_REG_COUNT                43
  33
  34 static struct workqueue_struct *wm8971_workq = NULL;
  35
  36 /* codec private data */
  37 struct wm8971_priv {
  38         enum snd_soc_control_type control_type;
  39         unsigned int sysclk;
  40 };
  41
  42 /*
  43  * wm8971 register cache
  44  * We can't read the WM8971 register space when we
  45  * are using 2 wire for device control, so we cache them instead.
  46  */
  47 static const u16 wm8971_reg[] = {
  48         0x0097, 0x0097, 0x0079, 0x0079,  /*  0 */
  49         0x0000, 0x0008, 0x0000, 0x000a,  /*  4 */
  50         0x0000, 0x0000, 0x00ff, 0x00ff,  /*  8 */
  51         0x000f, 0x000f, 0x0000, 0x0000,  /* 12 */
  52         0x0000, 0x007b, 0x0000, 0x0032,  /* 16 */
  53         0x0000, 0x00c3, 0x00c3, 0x00c0,  /* 20 */
  54         0x0000, 0x0000, 0x0000, 0x0000,  /* 24 */
  55         0x0000, 0x0000, 0x0000, 0x0000,  /* 28 */
  56         0x0000, 0x0000, 0x0050, 0x0050,  /* 32 */
  57         0x0050, 0x0050, 0x0050, 0x0050,  /* 36 */
  58         0x0079, 0x0079, 0x0079,          /* 40 */
  59 };
  60
  61 #define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0)
  62
  63 /* WM8971 Controls */
  64 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
  65 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
  66         "200Hz @ 48kHz" };
  67 static const char *wm8971_treble[] = { "8kHz", "4kHz" };
  68 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
  69 static const char *wm8971_ng_type[] = { "Constant PGA Gain",
  70         "Mute ADC Output" };
  71 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
  72 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
  73         "Mono (Right)", "Digital Mono"};
  74 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
  75 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
  76         "Differential"};
  77 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
  78         "Differential"};
  79 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
  80 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
  81 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
  82         "L + R Invert"};
  83
  84 static const struct soc_enum wm8971_enum[] = {
  85         SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass),        /* 0 */
  86         SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
  87         SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
  88         SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
  89         SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type),    /* 4 */
  90         SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
  91         SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
  92         SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
  93         SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
  94         SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
  95         SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
  96         SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
  97         SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol),    /* 12 */
  98         SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
  99 };
 100
 101 static const struct snd_kcontrol_new wm8971_snd_controls[] = {
 102         SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
 103         SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
 104                      6, 1, 0),
 105         SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
 106
 107         SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
 108                 WM8971_ROUT1V, 7, 1, 0),
 109         SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
 110                 WM8971_ROUT2V, 7, 1, 0),
 111         SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
 112
 113         SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
 114
 115         SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
 116                 WM8971_LOUTM2, 4, 7, 1),
 117         SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
 118                 WM8971_ROUTM2, 4, 7, 1),
 119         SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
 120                 WM8971_MOUTM2, 4, 7, 1),
 121
 122         SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
 123                 WM8971_ROUT1V, 0, 127, 0),
 124         SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
 125                 WM8971_ROUT2V, 0, 127, 0),
 126
 127         SOC_ENUM("Bass Boost", wm8971_enum[0]),
 128         SOC_ENUM("Bass Filter", wm8971_enum[1]),
 129         SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
 130
 131         SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
 132         SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
 133
 134         SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
 135
 136         SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
 137         SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
 138
 139         SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
 140         SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
 141         SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
 142         SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
 143         SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
 144         SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
 145         SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
 146         SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
 147         SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
 148         SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
 149
 150         SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
 151         SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
 152
 153         SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
 154         SOC_ENUM("Playback Function", wm8971_enum[6]),
 155         SOC_ENUM("Playback Phase", wm8971_enum[7]),
 156
 157         SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
 158 };
 159
 160 /*
 161  * DAPM Controls
 162  */
 163
 164 /* Left Mixer */
 165 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
 166 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
 167 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
 168 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
 169 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
 170 };
 171
 172 /* Right Mixer */
 173 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
 174 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
 175 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
 176 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
 177 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
 178 };
 179
 180 /* Mono Mixer */
 181 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
 182 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
 183 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
 184 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
 185 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
 186 };
 187
 188 /* Left Line Mux */
 189 static const struct snd_kcontrol_new wm8971_left_line_controls =
 190 SOC_DAPM_ENUM("Route", wm8971_enum[8]);
 191
 192 /* Right Line Mux */
 193 static const struct snd_kcontrol_new wm8971_right_line_controls =
 194 SOC_DAPM_ENUM("Route", wm8971_enum[9]);
 195
 196 /* Left PGA Mux */
 197 static const struct snd_kcontrol_new wm8971_left_pga_controls =
 198 SOC_DAPM_ENUM("Route", wm8971_enum[10]);
 199
 200 /* Right PGA Mux */
 201 static const struct snd_kcontrol_new wm8971_right_pga_controls =
 202 SOC_DAPM_ENUM("Route", wm8971_enum[11]);
 203
 204 /* Mono ADC Mux */
 205 static const struct snd_kcontrol_new wm8971_monomux_controls =
 206 SOC_DAPM_ENUM("Route", wm8971_enum[13]);
 207
 208 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
 209         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 210                 &wm8971_left_mixer_controls[0],
 211                 ARRAY_SIZE(wm8971_left_mixer_controls)),
 212         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 213                 &wm8971_right_mixer_controls[0],
 214                 ARRAY_SIZE(wm8971_right_mixer_controls)),
 215         SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
 216                 &wm8971_mono_mixer_controls[0],
 217                 ARRAY_SIZE(wm8971_mono_mixer_controls)),
 218
 219         SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
 220         SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
 221         SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
 222         SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
 223         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
 224         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
 225         SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
 226
 227         SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0),
 228         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
 229         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
 230
 231         SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
 232                 &wm8971_left_pga_controls),
 233         SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
 234                 &wm8971_right_pga_controls),
 235         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 236                 &wm8971_left_line_controls),
 237         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 238                 &wm8971_right_line_controls),
 239
 240         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 241                 &wm8971_monomux_controls),
 242         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 243                 &wm8971_monomux_controls),
 244
 245         SND_SOC_DAPM_OUTPUT("LOUT1"),
 246         SND_SOC_DAPM_OUTPUT("ROUT1"),
 247         SND_SOC_DAPM_OUTPUT("LOUT2"),
 248         SND_SOC_DAPM_OUTPUT("ROUT2"),
 249         SND_SOC_DAPM_OUTPUT("MONO"),
 250
 251         SND_SOC_DAPM_INPUT("LINPUT1"),
 252         SND_SOC_DAPM_INPUT("RINPUT1"),
 253         SND_SOC_DAPM_INPUT("MIC"),
 254 };
 255
 256 static const struct snd_soc_dapm_route audio_map[] = {
 257         /* left mixer */
 258         {"Left Mixer", "Playback Switch", "Left DAC"},
 259         {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
 260         {"Left Mixer", "Right Playback Switch", "Right DAC"},
 261         {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
 262
 263         /* right mixer */
 264         {"Right Mixer", "Left Playback Switch", "Left DAC"},
 265         {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
 266         {"Right Mixer", "Playback Switch", "Right DAC"},
 267         {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
 268
 269         /* left out 1 */
 270         {"Left Out 1", NULL, "Left Mixer"},
 271         {"LOUT1", NULL, "Left Out 1"},
 272
 273         /* left out 2 */
 274         {"Left Out 2", NULL, "Left Mixer"},
 275         {"LOUT2", NULL, "Left Out 2"},
 276
 277         /* right out 1 */
 278         {"Right Out 1", NULL, "Right Mixer"},
 279         {"ROUT1", NULL, "Right Out 1"},
 280
 281         /* right out 2 */
 282         {"Right Out 2", NULL, "Right Mixer"},
 283         {"ROUT2", NULL, "Right Out 2"},
 284
 285         /* mono mixer */
 286         {"Mono Mixer", "Left Playback Switch", "Left DAC"},
 287         {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
 288         {"Mono Mixer", "Right Playback Switch", "Right DAC"},
 289         {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
 290
 291         /* mono out */
 292         {"Mono Out", NULL, "Mono Mixer"},
 293         {"MONO1", NULL, "Mono Out"},
 294
 295         /* Left Line Mux */
 296         {"Left Line Mux", "Line", "LINPUT1"},
 297         {"Left Line Mux", "PGA", "Left PGA Mux"},
 298         {"Left Line Mux", "Differential", "Differential Mux"},
 299
 300         /* Right Line Mux */
 301         {"Right Line Mux", "Line", "RINPUT1"},
 302         {"Right Line Mux", "Mic", "MIC"},
 303         {"Right Line Mux", "PGA", "Right PGA Mux"},
 304         {"Right Line Mux", "Differential", "Differential Mux"},
 305
 306         /* Left PGA Mux */
 307         {"Left PGA Mux", "Line", "LINPUT1"},
 308         {"Left PGA Mux", "Differential", "Differential Mux"},
 309
 310         /* Right PGA Mux */
 311         {"Right PGA Mux", "Line", "RINPUT1"},
 312         {"Right PGA Mux", "Differential", "Differential Mux"},
 313
 314         /* Differential Mux */
 315         {"Differential Mux", "Line", "LINPUT1"},
 316         {"Differential Mux", "Line", "RINPUT1"},
 317
 318         /* Left ADC Mux */
 319         {"Left ADC Mux", "Stereo", "Left PGA Mux"},
 320         {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
 321         {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
 322
 323         /* Right ADC Mux */
 324         {"Right ADC Mux", "Stereo", "Right PGA Mux"},
 325         {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
 326         {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
 327
 328         /* ADC */
 329         {"Left ADC", NULL, "Left ADC Mux"},
 330         {"Right ADC", NULL, "Right ADC Mux"},
 331 };
 332
 333 static int wm8971_add_widgets(struct snd_soc_codec *codec)
 334 {
 335         struct snd_soc_dapm_context *dapm = &codec->dapm;
 336
 337         snd_soc_dapm_new_controls(dapm, wm8971_dapm_widgets,
 338                                   ARRAY_SIZE(wm8971_dapm_widgets));
 339         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 340
 341         return 0;
 342 }
 343
 344 struct _coeff_div {
 345         u32 mclk;
 346         u32 rate;
 347         u16 fs;
 348         u8 sr:5;
 349         u8 usb:1;
 350 };
 351
 352 /* codec hifi mclk clock divider coefficients */
 353 static const struct _coeff_div coeff_div[] = {
 354         /* 8k */
 355         {12288000, 8000, 1536, 0x6, 0x0},
 356         {11289600, 8000, 1408, 0x16, 0x0},
 357         {18432000, 8000, 2304, 0x7, 0x0},
 358         {16934400, 8000, 2112, 0x17, 0x0},
 359         {12000000, 8000, 1500, 0x6, 0x1},
 360
 361         /* 11.025k */
 362         {11289600, 11025, 1024, 0x18, 0x0},
 363         {16934400, 11025, 1536, 0x19, 0x0},
 364         {12000000, 11025, 1088, 0x19, 0x1},
 365
 366         /* 16k */
 367         {12288000, 16000, 768, 0xa, 0x0},
 368         {18432000, 16000, 1152, 0xb, 0x0},
 369         {12000000, 16000, 750, 0xa, 0x1},
 370
 371         /* 22.05k */
 372         {11289600, 22050, 512, 0x1a, 0x0},
 373         {16934400, 22050, 768, 0x1b, 0x0},
 374         {12000000, 22050, 544, 0x1b, 0x1},
 375
 376         /* 32k */
 377         {12288000, 32000, 384, 0xc, 0x0},
 378         {18432000, 32000, 576, 0xd, 0x0},
 379         {12000000, 32000, 375, 0xa, 0x1},
 380
 381         /* 44.1k */
 382         {11289600, 44100, 256, 0x10, 0x0},
 383         {16934400, 44100, 384, 0x11, 0x0},
 384         {12000000, 44100, 272, 0x11, 0x1},
 385
 386         /* 48k */
 387         {12288000, 48000, 256, 0x0, 0x0},
 388         {18432000, 48000, 384, 0x1, 0x0},
 389         {12000000, 48000, 250, 0x0, 0x1},
 390
 391         /* 88.2k */
 392         {11289600, 88200, 128, 0x1e, 0x0},
 393         {16934400, 88200, 192, 0x1f, 0x0},
 394         {12000000, 88200, 136, 0x1f, 0x1},
 395
 396         /* 96k */
 397         {12288000, 96000, 128, 0xe, 0x0},
 398         {18432000, 96000, 192, 0xf, 0x0},
 399         {12000000, 96000, 125, 0xe, 0x1},
 400 };
 401
 402 static int get_coeff(int mclk, int rate)
 403 {
 404         int i;
 405
 406         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 407                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 408                         return i;
 409         }
 410         return -EINVAL;
 411 }
 412
 413 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 414                 int clk_id, unsigned int freq, int dir)
 415 {
 416         struct snd_soc_codec *codec = codec_dai->codec;
 417         struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
 418
 419         switch (freq) {
 420         case 11289600:
 421         case 12000000:
 422         case 12288000:
 423         case 16934400:
 424         case 18432000:
 425                 wm8971->sysclk = freq;
 426                 return 0;
 427         }
 428         return -EINVAL;
 429 }
 430
 431 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
 432                 unsigned int fmt)
 433 {
 434         struct snd_soc_codec *codec = codec_dai->codec;
 435         u16 iface = 0;
 436
 437         /* set master/slave audio interface */
 438         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 439         case SND_SOC_DAIFMT_CBM_CFM:
 440                 iface = 0x0040;
 441                 break;
 442         case SND_SOC_DAIFMT_CBS_CFS:
 443                 break;
 444         default:
 445                 return -EINVAL;
 446         }
 447
 448         /* interface format */
 449         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 450         case SND_SOC_DAIFMT_I2S:
 451                 iface |= 0x0002;
 452                 break;
 453         case SND_SOC_DAIFMT_RIGHT_J:
 454                 break;
 455         case SND_SOC_DAIFMT_LEFT_J:
 456                 iface |= 0x0001;
 457                 break;
 458         case SND_SOC_DAIFMT_DSP_A:
 459                 iface |= 0x0003;
 460                 break;
 461         case SND_SOC_DAIFMT_DSP_B:
 462                 iface |= 0x0013;
 463                 break;
 464         default:
 465                 return -EINVAL;
 466         }
 467
 468         /* clock inversion */
 469         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 470         case SND_SOC_DAIFMT_NB_NF:
 471                 break;
 472         case SND_SOC_DAIFMT_IB_IF:
 473                 iface |= 0x0090;
 474                 break;
 475         case SND_SOC_DAIFMT_IB_NF:
 476                 iface |= 0x0080;
 477                 break;
 478         case SND_SOC_DAIFMT_NB_IF:
 479                 iface |= 0x0010;
 480                 break;
 481         default:
 482                 return -EINVAL;
 483         }
 484
 485         snd_soc_write(codec, WM8971_IFACE, iface);
 486         return 0;
 487 }
 488
 489 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
 490         struct snd_pcm_hw_params *params,
 491         struct snd_soc_dai *dai)
 492 {
 493         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 494         struct snd_soc_codec *codec = rtd->codec;
 495         struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
 496         u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
 497         u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
 498         int coeff = get_coeff(wm8971->sysclk, params_rate(params));
 499
 500         /* bit size */
 501         switch (params_format(params)) {
 502         case SNDRV_PCM_FORMAT_S16_LE:
 503                 break;
 504         case SNDRV_PCM_FORMAT_S20_3LE:
 505                 iface |= 0x0004;
 506                 break;
 507         case SNDRV_PCM_FORMAT_S24_LE:
 508                 iface |= 0x0008;
 509                 break;
 510         case SNDRV_PCM_FORMAT_S32_LE:
 511                 iface |= 0x000c;
 512                 break;
 513         }
 514
 515         /* set iface & srate */
 516         snd_soc_write(codec, WM8971_IFACE, iface);
 517         if (coeff >= 0)
 518                 snd_soc_write(codec, WM8971_SRATE, srate |
 519                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 520
 521         return 0;
 522 }
 523
 524 static int wm8971_mute(struct snd_soc_dai *dai, int mute)
 525 {
 526         struct snd_soc_codec *codec = dai->codec;
 527         u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7;
 528
 529         if (mute)
 530                 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
 531         else
 532                 snd_soc_write(codec, WM8971_ADCDAC, mute_reg);
 533         return 0;
 534 }
 535
 536 static int wm8971_set_bias_level(struct snd_soc_codec *codec,
 537         enum snd_soc_bias_level level)
 538 {
 539         u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 540
 541         switch (level) {
 542         case SND_SOC_BIAS_ON:
 543                 /* set vmid to 50k and unmute dac */
 544                 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
 545                 break;
 546         case SND_SOC_BIAS_PREPARE:
 547                 break;
 548         case SND_SOC_BIAS_STANDBY:
 549                 /* mute dac and set vmid to 500k, enable VREF */
 550                 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
 551                 break;
 552         case SND_SOC_BIAS_OFF:
 553                 snd_soc_write(codec, WM8971_PWR1, 0x0001);
 554                 break;
 555         }
 556         codec->dapm.bias_level = level;
 557         return 0;
 558 }
 559
 560 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 561                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 562                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 563
 564 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 565         SNDRV_PCM_FMTBIT_S24_LE)
 566
 567 static struct snd_soc_dai_ops wm8971_dai_ops = {
 568         .hw_params      = wm8971_pcm_hw_params,
 569         .digital_mute   = wm8971_mute,
 570         .set_fmt        = wm8971_set_dai_fmt,
 571         .set_sysclk     = wm8971_set_dai_sysclk,
 572 };
 573
 574 static struct snd_soc_dai_driver wm8971_dai = {
 575         .name = "wm8971-hifi",
 576         .playback = {
 577                 .stream_name = "Playback",
 578                 .channels_min = 1,
 579                 .channels_max = 2,
 580                 .rates = WM8971_RATES,
 581                 .formats = WM8971_FORMATS,},
 582         .capture = {
 583                 .stream_name = "Capture",
 584                 .channels_min = 1,
 585                 .channels_max = 2,
 586                 .rates = WM8971_RATES,
 587                 .formats = WM8971_FORMATS,},
 588         .ops = &wm8971_dai_ops,
 589 };
 590
 591 static void wm8971_work(struct work_struct *work)
 592 {
 593         struct snd_soc_dapm_context *dapm =
 594                 container_of(work, struct snd_soc_dapm_context,
 595                              delayed_work.work);
 596         struct snd_soc_codec *codec = dapm->codec;
 597         wm8971_set_bias_level(codec, codec->dapm.bias_level);
 598 }
 599
 600 static int wm8971_suspend(struct snd_soc_codec *codec, pm_message_t state)
 601 {
 602         wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 603         return 0;
 604 }
 605
 606 static int wm8971_resume(struct snd_soc_codec *codec)
 607 {
 608         int i;
 609         u8 data[2];
 610         u16 *cache = codec->reg_cache;
 611         u16 reg;
 612
 613         /* Sync reg_cache with the hardware */
 614         for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) {
 615                 if (i + 1 == WM8971_RESET)
 616                         continue;
 617                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 618                 data[1] = cache[i] & 0x00ff;
 619                 codec->hw_write(codec->control_data, data, 2);
 620         }
 621
 622         wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 623
 624         /* charge wm8971 caps */
 625         if (codec->dapm.suspend_bias_level == SND_SOC_BIAS_ON) {
 626                 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 627                 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
 628                 codec->dapm.bias_level = SND_SOC_BIAS_ON;
 629                 queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work,
 630                         msecs_to_jiffies(1000));
 631         }
 632
 633         return 0;
 634 }
 635
 636 static int wm8971_probe(struct snd_soc_codec *codec)
 637 {
 638         struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
 639         int ret = 0;
 640         u16 reg;
 641
 642         ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8971->control_type);
 643         if (ret < 0) {
 644                 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret);
 645                 return ret;
 646         }
 647
 648         INIT_DELAYED_WORK(&codec->dapm.delayed_work, wm8971_work);
 649         wm8971_workq = create_workqueue("wm8971");
 650         if (wm8971_workq == NULL)
 651                 return -ENOMEM;
 652
 653         wm8971_reset(codec);
 654
 655         /* charge output caps - set vmid to 5k for quick power up */
 656         reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 657         snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
 658         codec->dapm.bias_level = SND_SOC_BIAS_STANDBY;
 659         queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work,
 660                 msecs_to_jiffies(1000));
 661
 662         /* set the update bits */
 663         reg = snd_soc_read(codec, WM8971_LDAC);
 664         snd_soc_write(codec, WM8971_LDAC, reg | 0x0100);
 665         reg = snd_soc_read(codec, WM8971_RDAC);
 666         snd_soc_write(codec, WM8971_RDAC, reg | 0x0100);
 667
 668         reg = snd_soc_read(codec, WM8971_LOUT1V);
 669         snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100);
 670         reg = snd_soc_read(codec, WM8971_ROUT1V);
 671         snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100);
 672
 673         reg = snd_soc_read(codec, WM8971_LOUT2V);
 674         snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100);
 675         reg = snd_soc_read(codec, WM8971_ROUT2V);
 676         snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100);
 677
 678         reg = snd_soc_read(codec, WM8971_LINVOL);
 679         snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100);
 680         reg = snd_soc_read(codec, WM8971_RINVOL);
 681         snd_soc_write(codec, WM8971_RINVOL, reg | 0x0100);
 682
 683         snd_soc_add_controls(codec, wm8971_snd_controls,
 684                                 ARRAY_SIZE(wm8971_snd_controls));
 685         wm8971_add_widgets(codec);
 686
 687         return ret;
 688 }
 689
 690
 691 /* power down chip */
 692 static int wm8971_remove(struct snd_soc_codec *codec)
 693 {
 694         wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 695
 696         if (wm8971_workq)
 697                 destroy_workqueue(wm8971_workq);
 698         return 0;
 699 }
 700
 701 static struct snd_soc_codec_driver soc_codec_dev_wm8971 = {
 702         .probe =        wm8971_probe,
 703         .remove =       wm8971_remove,
 704         .suspend =      wm8971_suspend,
 705         .resume =       wm8971_resume,
 706         .set_bias_level = wm8971_set_bias_level,
 707         .reg_cache_size = ARRAY_SIZE(wm8971_reg),
 708         .reg_word_size = sizeof(u16),
 709         .reg_cache_default = wm8971_reg,
 710 };
 711
 712 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 713 static __devinit int wm8971_i2c_probe(struct i2c_client *i2c,
 714                                       const struct i2c_device_id *id)
 715 {
 716         struct wm8971_priv *wm8971;
 717         int ret;
 718
 719         wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
 720         if (wm8971 == NULL)
 721                 return -ENOMEM;
 722
 723         wm8971->control_type = SND_SOC_I2C;
 724         i2c_set_clientdata(i2c, wm8971);
 725
 726         ret = snd_soc_register_codec(&i2c->dev,
 727                         &soc_codec_dev_wm8971, &wm8971_dai, 1);
 728         if (ret < 0)
 729                 kfree(wm8971);
 730         return ret;
 731 }
 732
 733 static __devexit int wm8971_i2c_remove(struct i2c_client *client)
 734 {
 735         snd_soc_unregister_codec(&client->dev);
 736         kfree(i2c_get_clientdata(client));
 737         return 0;
 738 }
 739
 740 static const struct i2c_device_id wm8971_i2c_id[] = {
 741         { "wm8971", 0 },
 742         { }
 743 };
 744 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
 745
 746 static struct i2c_driver wm8971_i2c_driver = {
 747         .driver = {
 748                 .name = "wm8971-codec",
 749                 .owner = THIS_MODULE,
 750         },
 751         .probe =    wm8971_i2c_probe,
 752         .remove =   __devexit_p(wm8971_i2c_remove),
 753         .id_table = wm8971_i2c_id,
 754 };
 755 #endif
 756
 757 static int __init wm8971_modinit(void)
 758 {
 759         int ret = 0;
 760 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 761         ret = i2c_add_driver(&wm8971_i2c_driver);
 762         if (ret != 0) {
 763                 printk(KERN_ERR "Failed to register WM8971 I2C driver: %d\n",
 764                        ret);
 765         }
 766 #endif
 767         return ret;
 768 }
 769 module_init(wm8971_modinit);
 770
 771 static void __exit wm8971_exit(void)
 772 {
 773 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 774         i2c_del_driver(&wm8971_i2c_driver);
 775 #endif
 776 }
 777 module_exit(wm8971_exit);
 778
 779 MODULE_DESCRIPTION("ASoC WM8971 driver");
 780 MODULE_AUTHOR("Lab126");
 781 MODULE_LICENSE("GPL");