sound/soc/codecs/wm8971.c

   1 /*
   2  * wm8971.c  --  WM8971 ALSA SoC Audio driver
   3  *
   4  * Copyright 2005 Lab126, Inc.
   5  *
   6  * Author: Kenneth Kiraly <kiraly@lab126.com>
   7  *
   8  * Based on wm8753.c by Liam Girdwood
   9  *
  10  *  This program is free software; you can redistribute  it and/or modify it
  11  *  under  the terms of  the GNU General  Public License as published by the
  12  *  Free Software Foundation;  either version 2 of the  License, or (at your
  13  *  option) any later version.
  14  */
  15
  16 #include <linux/module.h>
  17 #include <linux/moduleparam.h>
  18 #include <linux/init.h>
  19 #include <linux/delay.h>
  20 #include <linux/pm.h>
  21 #include <linux/i2c.h>
  22 #include <linux/platform_device.h>
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/pcm_params.h>
  26 #include <sound/soc.h>
  27 #include <sound/soc-dapm.h>
  28 #include <sound/initval.h>
  29
  30 #include "wm8971.h"
  31
  32 #define WM8971_VERSION "0.9"
  33
  34 #define WM8971_REG_COUNT                43
  35
  36 static struct workqueue_struct *wm8971_workq = NULL;
  37
  38 /* codec private data */
  39 struct wm8971_priv {
  40         unsigned int sysclk;
  41 };
  42
  43 /*
  44  * wm8971 register cache
  45  * We can't read the WM8971 register space when we
  46  * are using 2 wire for device control, so we cache them instead.
  47  */
  48 static const u16 wm8971_reg[] = {
  49         0x0097, 0x0097, 0x0079, 0x0079,  /*  0 */
  50         0x0000, 0x0008, 0x0000, 0x000a,  /*  4 */
  51         0x0000, 0x0000, 0x00ff, 0x00ff,  /*  8 */
  52         0x000f, 0x000f, 0x0000, 0x0000,  /* 12 */
  53         0x0000, 0x007b, 0x0000, 0x0032,  /* 16 */
  54         0x0000, 0x00c3, 0x00c3, 0x00c0,  /* 20 */
  55         0x0000, 0x0000, 0x0000, 0x0000,  /* 24 */
  56         0x0000, 0x0000, 0x0000, 0x0000,  /* 28 */
  57         0x0000, 0x0000, 0x0050, 0x0050,  /* 32 */
  58         0x0050, 0x0050, 0x0050, 0x0050,  /* 36 */
  59         0x0079, 0x0079, 0x0079,          /* 40 */
  60 };
  61
  62 static inline unsigned int wm8971_read_reg_cache(struct snd_soc_codec *codec,
  63         unsigned int reg)
  64 {
  65         u16 *cache = codec->reg_cache;
  66         if (reg < WM8971_REG_COUNT)
  67                 return cache[reg];
  68
  69         return -1;
  70 }
  71
  72 static inline void wm8971_write_reg_cache(struct snd_soc_codec *codec,
  73         unsigned int reg, unsigned int value)
  74 {
  75         u16 *cache = codec->reg_cache;
  76         if (reg < WM8971_REG_COUNT)
  77                 cache[reg] = value;
  78 }
  79
  80 static int wm8971_write(struct snd_soc_codec *codec, unsigned int reg,
  81         unsigned int value)
  82 {
  83         u8 data[2];
  84
  85         /* data is
  86          *   D15..D9 WM8753 register offset
  87          *   D8...D0 register data
  88          */
  89         data[0] = (reg << 1) | ((value >> 8) & 0x0001);
  90         data[1] = value & 0x00ff;
  91
  92         wm8971_write_reg_cache (codec, reg, value);
  93         if (codec->hw_write(codec->control_data, data, 2) == 2)
  94                 return 0;
  95         else
  96                 return -EIO;
  97 }
  98
  99 #define wm8971_reset(c) wm8971_write(c, WM8971_RESET, 0)
 100
 101 /* WM8971 Controls */
 102 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
 103 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
 104         "200Hz @ 48kHz" };
 105 static const char *wm8971_treble[] = { "8kHz", "4kHz" };
 106 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
 107 static const char *wm8971_ng_type[] = { "Constant PGA Gain",
 108         "Mute ADC Output" };
 109 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
 110 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
 111         "Mono (Right)", "Digital Mono"};
 112 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
 113 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
 114         "Differential"};
 115 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
 116         "Differential"};
 117 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
 118 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
 119 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
 120         "L + R Invert"};
 121
 122 static const struct soc_enum wm8971_enum[] = {
 123         SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass),        /* 0 */
 124         SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
 125         SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
 126         SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
 127         SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type),    /* 4 */
 128         SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
 129         SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
 130         SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
 131         SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
 132         SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
 133         SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
 134         SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
 135         SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol),    /* 12 */
 136         SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
 137 };
 138
 139 static const struct snd_kcontrol_new wm8971_snd_controls[] = {
 140         SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
 141         SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
 142                      6, 1, 0),
 143         SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
 144
 145         SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
 146                 WM8971_ROUT1V, 7, 1, 0),
 147         SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
 148                 WM8971_ROUT2V, 7, 1, 0),
 149         SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
 150
 151         SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
 152
 153         SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
 154                 WM8971_LOUTM2, 4, 7, 1),
 155         SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
 156                 WM8971_ROUTM2, 4, 7, 1),
 157         SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
 158                 WM8971_MOUTM2, 4, 7, 1),
 159
 160         SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
 161                 WM8971_ROUT1V, 0, 127, 0),
 162         SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
 163                 WM8971_ROUT2V, 0, 127, 0),
 164
 165         SOC_ENUM("Bass Boost", wm8971_enum[0]),
 166         SOC_ENUM("Bass Filter", wm8971_enum[1]),
 167         SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
 168
 169         SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
 170         SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
 171
 172         SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
 173
 174         SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
 175         SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
 176
 177         SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
 178         SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
 179         SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
 180         SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
 181         SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
 182         SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
 183         SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
 184         SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
 185         SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
 186         SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
 187
 188         SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
 189         SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
 190
 191         SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
 192         SOC_ENUM("Playback Function", wm8971_enum[6]),
 193         SOC_ENUM("Playback Phase", wm8971_enum[7]),
 194
 195         SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
 196 };
 197
 198 /*
 199  * DAPM Controls
 200  */
 201
 202 /* Left Mixer */
 203 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
 204 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
 205 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
 206 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
 207 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
 208 };
 209
 210 /* Right Mixer */
 211 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
 212 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
 213 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
 214 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
 215 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
 216 };
 217
 218 /* Mono Mixer */
 219 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
 220 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
 221 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
 222 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
 223 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
 224 };
 225
 226 /* Left Line Mux */
 227 static const struct snd_kcontrol_new wm8971_left_line_controls =
 228 SOC_DAPM_ENUM("Route", wm8971_enum[8]);
 229
 230 /* Right Line Mux */
 231 static const struct snd_kcontrol_new wm8971_right_line_controls =
 232 SOC_DAPM_ENUM("Route", wm8971_enum[9]);
 233
 234 /* Left PGA Mux */
 235 static const struct snd_kcontrol_new wm8971_left_pga_controls =
 236 SOC_DAPM_ENUM("Route", wm8971_enum[10]);
 237
 238 /* Right PGA Mux */
 239 static const struct snd_kcontrol_new wm8971_right_pga_controls =
 240 SOC_DAPM_ENUM("Route", wm8971_enum[11]);
 241
 242 /* Mono ADC Mux */
 243 static const struct snd_kcontrol_new wm8971_monomux_controls =
 244 SOC_DAPM_ENUM("Route", wm8971_enum[13]);
 245
 246 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
 247         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 248                 &wm8971_left_mixer_controls[0],
 249                 ARRAY_SIZE(wm8971_left_mixer_controls)),
 250         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 251                 &wm8971_right_mixer_controls[0],
 252                 ARRAY_SIZE(wm8971_right_mixer_controls)),
 253         SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
 254                 &wm8971_mono_mixer_controls[0],
 255                 ARRAY_SIZE(wm8971_mono_mixer_controls)),
 256
 257         SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
 258         SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
 259         SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
 260         SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
 261         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
 262         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
 263         SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
 264
 265         SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0),
 266         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
 267         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
 268
 269         SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
 270                 &wm8971_left_pga_controls),
 271         SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
 272                 &wm8971_right_pga_controls),
 273         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 274                 &wm8971_left_line_controls),
 275         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 276                 &wm8971_right_line_controls),
 277
 278         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 279                 &wm8971_monomux_controls),
 280         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 281                 &wm8971_monomux_controls),
 282
 283         SND_SOC_DAPM_OUTPUT("LOUT1"),
 284         SND_SOC_DAPM_OUTPUT("ROUT1"),
 285         SND_SOC_DAPM_OUTPUT("LOUT2"),
 286         SND_SOC_DAPM_OUTPUT("ROUT2"),
 287         SND_SOC_DAPM_OUTPUT("MONO"),
 288
 289         SND_SOC_DAPM_INPUT("LINPUT1"),
 290         SND_SOC_DAPM_INPUT("RINPUT1"),
 291         SND_SOC_DAPM_INPUT("MIC"),
 292 };
 293
 294 static const struct snd_soc_dapm_route audio_map[] = {
 295         /* left mixer */
 296         {"Left Mixer", "Playback Switch", "Left DAC"},
 297         {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
 298         {"Left Mixer", "Right Playback Switch", "Right DAC"},
 299         {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
 300
 301         /* right mixer */
 302         {"Right Mixer", "Left Playback Switch", "Left DAC"},
 303         {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
 304         {"Right Mixer", "Playback Switch", "Right DAC"},
 305         {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
 306
 307         /* left out 1 */
 308         {"Left Out 1", NULL, "Left Mixer"},
 309         {"LOUT1", NULL, "Left Out 1"},
 310
 311         /* left out 2 */
 312         {"Left Out 2", NULL, "Left Mixer"},
 313         {"LOUT2", NULL, "Left Out 2"},
 314
 315         /* right out 1 */
 316         {"Right Out 1", NULL, "Right Mixer"},
 317         {"ROUT1", NULL, "Right Out 1"},
 318
 319         /* right out 2 */
 320         {"Right Out 2", NULL, "Right Mixer"},
 321         {"ROUT2", NULL, "Right Out 2"},
 322
 323         /* mono mixer */
 324         {"Mono Mixer", "Left Playback Switch", "Left DAC"},
 325         {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
 326         {"Mono Mixer", "Right Playback Switch", "Right DAC"},
 327         {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
 328
 329         /* mono out */
 330         {"Mono Out", NULL, "Mono Mixer"},
 331         {"MONO1", NULL, "Mono Out"},
 332
 333         /* Left Line Mux */
 334         {"Left Line Mux", "Line", "LINPUT1"},
 335         {"Left Line Mux", "PGA", "Left PGA Mux"},
 336         {"Left Line Mux", "Differential", "Differential Mux"},
 337
 338         /* Right Line Mux */
 339         {"Right Line Mux", "Line", "RINPUT1"},
 340         {"Right Line Mux", "Mic", "MIC"},
 341         {"Right Line Mux", "PGA", "Right PGA Mux"},
 342         {"Right Line Mux", "Differential", "Differential Mux"},
 343
 344         /* Left PGA Mux */
 345         {"Left PGA Mux", "Line", "LINPUT1"},
 346         {"Left PGA Mux", "Differential", "Differential Mux"},
 347
 348         /* Right PGA Mux */
 349         {"Right PGA Mux", "Line", "RINPUT1"},
 350         {"Right PGA Mux", "Differential", "Differential Mux"},
 351
 352         /* Differential Mux */
 353         {"Differential Mux", "Line", "LINPUT1"},
 354         {"Differential Mux", "Line", "RINPUT1"},
 355
 356         /* Left ADC Mux */
 357         {"Left ADC Mux", "Stereo", "Left PGA Mux"},
 358         {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
 359         {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
 360
 361         /* Right ADC Mux */
 362         {"Right ADC Mux", "Stereo", "Right PGA Mux"},
 363         {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
 364         {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
 365
 366         /* ADC */
 367         {"Left ADC", NULL, "Left ADC Mux"},
 368         {"Right ADC", NULL, "Right ADC Mux"},
 369 };
 370
 371 static int wm8971_add_widgets(struct snd_soc_codec *codec)
 372 {
 373         snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets,
 374                                   ARRAY_SIZE(wm8971_dapm_widgets));
 375
 376         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 377
 378         snd_soc_dapm_new_widgets(codec);
 379
 380         return 0;
 381 }
 382
 383 struct _coeff_div {
 384         u32 mclk;
 385         u32 rate;
 386         u16 fs;
 387         u8 sr:5;
 388         u8 usb:1;
 389 };
 390
 391 /* codec hifi mclk clock divider coefficients */
 392 static const struct _coeff_div coeff_div[] = {
 393         /* 8k */
 394         {12288000, 8000, 1536, 0x6, 0x0},
 395         {11289600, 8000, 1408, 0x16, 0x0},
 396         {18432000, 8000, 2304, 0x7, 0x0},
 397         {16934400, 8000, 2112, 0x17, 0x0},
 398         {12000000, 8000, 1500, 0x6, 0x1},
 399
 400         /* 11.025k */
 401         {11289600, 11025, 1024, 0x18, 0x0},
 402         {16934400, 11025, 1536, 0x19, 0x0},
 403         {12000000, 11025, 1088, 0x19, 0x1},
 404
 405         /* 16k */
 406         {12288000, 16000, 768, 0xa, 0x0},
 407         {18432000, 16000, 1152, 0xb, 0x0},
 408         {12000000, 16000, 750, 0xa, 0x1},
 409
 410         /* 22.05k */
 411         {11289600, 22050, 512, 0x1a, 0x0},
 412         {16934400, 22050, 768, 0x1b, 0x0},
 413         {12000000, 22050, 544, 0x1b, 0x1},
 414
 415         /* 32k */
 416         {12288000, 32000, 384, 0xc, 0x0},
 417         {18432000, 32000, 576, 0xd, 0x0},
 418         {12000000, 32000, 375, 0xa, 0x1},
 419
 420         /* 44.1k */
 421         {11289600, 44100, 256, 0x10, 0x0},
 422         {16934400, 44100, 384, 0x11, 0x0},
 423         {12000000, 44100, 272, 0x11, 0x1},
 424
 425         /* 48k */
 426         {12288000, 48000, 256, 0x0, 0x0},
 427         {18432000, 48000, 384, 0x1, 0x0},
 428         {12000000, 48000, 250, 0x0, 0x1},
 429
 430         /* 88.2k */
 431         {11289600, 88200, 128, 0x1e, 0x0},
 432         {16934400, 88200, 192, 0x1f, 0x0},
 433         {12000000, 88200, 136, 0x1f, 0x1},
 434
 435         /* 96k */
 436         {12288000, 96000, 128, 0xe, 0x0},
 437         {18432000, 96000, 192, 0xf, 0x0},
 438         {12000000, 96000, 125, 0xe, 0x1},
 439 };
 440
 441 static int get_coeff(int mclk, int rate)
 442 {
 443         int i;
 444
 445         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 446                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 447                         return i;
 448         }
 449         return -EINVAL;
 450 }
 451
 452 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 453                 int clk_id, unsigned int freq, int dir)
 454 {
 455         struct snd_soc_codec *codec = codec_dai->codec;
 456         struct wm8971_priv *wm8971 = codec->private_data;
 457
 458         switch (freq) {
 459         case 11289600:
 460         case 12000000:
 461         case 12288000:
 462         case 16934400:
 463         case 18432000:
 464                 wm8971->sysclk = freq;
 465                 return 0;
 466         }
 467         return -EINVAL;
 468 }
 469
 470 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
 471                 unsigned int fmt)
 472 {
 473         struct snd_soc_codec *codec = codec_dai->codec;
 474         u16 iface = 0;
 475
 476         /* set master/slave audio interface */
 477         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 478         case SND_SOC_DAIFMT_CBM_CFM:
 479                 iface = 0x0040;
 480                 break;
 481         case SND_SOC_DAIFMT_CBS_CFS:
 482                 break;
 483         default:
 484                 return -EINVAL;
 485         }
 486
 487         /* interface format */
 488         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 489         case SND_SOC_DAIFMT_I2S:
 490                 iface |= 0x0002;
 491                 break;
 492         case SND_SOC_DAIFMT_RIGHT_J:
 493                 break;
 494         case SND_SOC_DAIFMT_LEFT_J:
 495                 iface |= 0x0001;
 496                 break;
 497         case SND_SOC_DAIFMT_DSP_A:
 498                 iface |= 0x0003;
 499                 break;
 500         case SND_SOC_DAIFMT_DSP_B:
 501                 iface |= 0x0013;
 502                 break;
 503         default:
 504                 return -EINVAL;
 505         }
 506
 507         /* clock inversion */
 508         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 509         case SND_SOC_DAIFMT_NB_NF:
 510                 break;
 511         case SND_SOC_DAIFMT_IB_IF:
 512                 iface |= 0x0090;
 513                 break;
 514         case SND_SOC_DAIFMT_IB_NF:
 515                 iface |= 0x0080;
 516                 break;
 517         case SND_SOC_DAIFMT_NB_IF:
 518                 iface |= 0x0010;
 519                 break;
 520         default:
 521                 return -EINVAL;
 522         }
 523
 524         wm8971_write(codec, WM8971_IFACE, iface);
 525         return 0;
 526 }
 527
 528 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
 529         struct snd_pcm_hw_params *params,
 530         struct snd_soc_dai *dai)
 531 {
 532         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 533         struct snd_soc_device *socdev = rtd->socdev;
 534         struct snd_soc_codec *codec = socdev->card->codec;
 535         struct wm8971_priv *wm8971 = codec->private_data;
 536         u16 iface = wm8971_read_reg_cache(codec, WM8971_IFACE) & 0x1f3;
 537         u16 srate = wm8971_read_reg_cache(codec, WM8971_SRATE) & 0x1c0;
 538         int coeff = get_coeff(wm8971->sysclk, params_rate(params));
 539
 540         /* bit size */
 541         switch (params_format(params)) {
 542         case SNDRV_PCM_FORMAT_S16_LE:
 543                 break;
 544         case SNDRV_PCM_FORMAT_S20_3LE:
 545                 iface |= 0x0004;
 546                 break;
 547         case SNDRV_PCM_FORMAT_S24_LE:
 548                 iface |= 0x0008;
 549                 break;
 550         case SNDRV_PCM_FORMAT_S32_LE:
 551                 iface |= 0x000c;
 552                 break;
 553         }
 554
 555         /* set iface & srate */
 556         wm8971_write(codec, WM8971_IFACE, iface);
 557         if (coeff >= 0)
 558                 wm8971_write(codec, WM8971_SRATE, srate |
 559                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 560
 561         return 0;
 562 }
 563
 564 static int wm8971_mute(struct snd_soc_dai *dai, int mute)
 565 {
 566         struct snd_soc_codec *codec = dai->codec;
 567         u16 mute_reg = wm8971_read_reg_cache(codec, WM8971_ADCDAC) & 0xfff7;
 568
 569         if (mute)
 570                 wm8971_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
 571         else
 572                 wm8971_write(codec, WM8971_ADCDAC, mute_reg);
 573         return 0;
 574 }
 575
 576 static int wm8971_set_bias_level(struct snd_soc_codec *codec,
 577         enum snd_soc_bias_level level)
 578 {
 579         u16 pwr_reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
 580
 581         switch (level) {
 582         case SND_SOC_BIAS_ON:
 583                 /* set vmid to 50k and unmute dac */
 584                 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
 585                 break;
 586         case SND_SOC_BIAS_PREPARE:
 587                 break;
 588         case SND_SOC_BIAS_STANDBY:
 589                 /* mute dac and set vmid to 500k, enable VREF */
 590                 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
 591                 break;
 592         case SND_SOC_BIAS_OFF:
 593                 wm8971_write(codec, WM8971_PWR1, 0x0001);
 594                 break;
 595         }
 596         codec->bias_level = level;
 597         return 0;
 598 }
 599
 600 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 601                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 602                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 603
 604 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 605         SNDRV_PCM_FMTBIT_S24_LE)
 606
 607 struct snd_soc_dai wm8971_dai = {
 608         .name = "WM8971",
 609         .playback = {
 610                 .stream_name = "Playback",
 611                 .channels_min = 1,
 612                 .channels_max = 2,
 613                 .rates = WM8971_RATES,
 614                 .formats = WM8971_FORMATS,},
 615         .capture = {
 616                 .stream_name = "Capture",
 617                 .channels_min = 1,
 618                 .channels_max = 2,
 619                 .rates = WM8971_RATES,
 620                 .formats = WM8971_FORMATS,},
 621         .ops = {
 622                 .hw_params = wm8971_pcm_hw_params,
 623                 .digital_mute = wm8971_mute,
 624                 .set_fmt = wm8971_set_dai_fmt,
 625                 .set_sysclk = wm8971_set_dai_sysclk,
 626         },
 627 };
 628 EXPORT_SYMBOL_GPL(wm8971_dai);
 629
 630 static void wm8971_work(struct work_struct *work)
 631 {
 632         struct snd_soc_codec *codec =
 633                 container_of(work, struct snd_soc_codec, delayed_work.work);
 634         wm8971_set_bias_level(codec, codec->bias_level);
 635 }
 636
 637 static int wm8971_suspend(struct platform_device *pdev, pm_message_t state)
 638 {
 639         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 640         struct snd_soc_codec *codec = socdev->card->codec;
 641
 642         wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 643         return 0;
 644 }
 645
 646 static int wm8971_resume(struct platform_device *pdev)
 647 {
 648         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 649         struct snd_soc_codec *codec = socdev->card->codec;
 650         int i;
 651         u8 data[2];
 652         u16 *cache = codec->reg_cache;
 653         u16 reg;
 654
 655         /* Sync reg_cache with the hardware */
 656         for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) {
 657                 if (i + 1 == WM8971_RESET)
 658                         continue;
 659                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 660                 data[1] = cache[i] & 0x00ff;
 661                 codec->hw_write(codec->control_data, data, 2);
 662         }
 663
 664         wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 665
 666         /* charge wm8971 caps */
 667         if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
 668                 reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
 669                 wm8971_write(codec, WM8971_PWR1, reg | 0x01c0);
 670                 codec->bias_level = SND_SOC_BIAS_ON;
 671                 queue_delayed_work(wm8971_workq, &codec->delayed_work,
 672                         msecs_to_jiffies(1000));
 673         }
 674
 675         return 0;
 676 }
 677
 678 static int wm8971_init(struct snd_soc_device *socdev)
 679 {
 680         struct snd_soc_codec *codec = socdev->card->codec;
 681         int reg, ret = 0;
 682
 683         codec->name = "WM8971";
 684         codec->owner = THIS_MODULE;
 685         codec->read = wm8971_read_reg_cache;
 686         codec->write = wm8971_write;
 687         codec->set_bias_level = wm8971_set_bias_level;
 688         codec->dai = &wm8971_dai;
 689         codec->reg_cache_size = ARRAY_SIZE(wm8971_reg);
 690         codec->num_dai = 1;
 691         codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL);
 692
 693         if (codec->reg_cache == NULL)
 694                 return -ENOMEM;
 695
 696         wm8971_reset(codec);
 697
 698         /* register pcms */
 699         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 700         if (ret < 0) {
 701                 printk(KERN_ERR "wm8971: failed to create pcms\n");
 702                 goto pcm_err;
 703         }
 704
 705         /* charge output caps - set vmid to 5k for quick power up */
 706         reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
 707         wm8971_write(codec, WM8971_PWR1, reg | 0x01c0);
 708         codec->bias_level = SND_SOC_BIAS_STANDBY;
 709         queue_delayed_work(wm8971_workq, &codec->delayed_work,
 710                 msecs_to_jiffies(1000));
 711
 712         /* set the update bits */
 713         reg = wm8971_read_reg_cache(codec, WM8971_LDAC);
 714         wm8971_write(codec, WM8971_LDAC, reg | 0x0100);
 715         reg = wm8971_read_reg_cache(codec, WM8971_RDAC);
 716         wm8971_write(codec, WM8971_RDAC, reg | 0x0100);
 717
 718         reg = wm8971_read_reg_cache(codec, WM8971_LOUT1V);
 719         wm8971_write(codec, WM8971_LOUT1V, reg | 0x0100);
 720         reg = wm8971_read_reg_cache(codec, WM8971_ROUT1V);
 721         wm8971_write(codec, WM8971_ROUT1V, reg | 0x0100);
 722
 723         reg = wm8971_read_reg_cache(codec, WM8971_LOUT2V);
 724         wm8971_write(codec, WM8971_LOUT2V, reg | 0x0100);
 725         reg = wm8971_read_reg_cache(codec, WM8971_ROUT2V);
 726         wm8971_write(codec, WM8971_ROUT2V, reg | 0x0100);
 727
 728         reg = wm8971_read_reg_cache(codec, WM8971_LINVOL);
 729         wm8971_write(codec, WM8971_LINVOL, reg | 0x0100);
 730         reg = wm8971_read_reg_cache(codec, WM8971_RINVOL);
 731         wm8971_write(codec, WM8971_RINVOL, reg | 0x0100);
 732
 733         snd_soc_add_controls(codec, wm8971_snd_controls,
 734                                 ARRAY_SIZE(wm8971_snd_controls));
 735         wm8971_add_widgets(codec);
 736         ret = snd_soc_init_card(socdev);
 737         if (ret < 0) {
 738                 printk(KERN_ERR "wm8971: failed to register card\n");
 739                 goto card_err;
 740         }
 741         return ret;
 742
 743 card_err:
 744         snd_soc_free_pcms(socdev);
 745         snd_soc_dapm_free(socdev);
 746 pcm_err:
 747         kfree(codec->reg_cache);
 748         return ret;
 749 }
 750
 751 /* If the i2c layer weren't so broken, we could pass this kind of data
 752    around */
 753 static struct snd_soc_device *wm8971_socdev;
 754
 755 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 756
 757 static int wm8971_i2c_probe(struct i2c_client *i2c,
 758                             const struct i2c_device_id *id)
 759 {
 760         struct snd_soc_device *socdev = wm8971_socdev;
 761         struct snd_soc_codec *codec = socdev->card->codec;
 762         int ret;
 763
 764         i2c_set_clientdata(i2c, codec);
 765
 766         codec->control_data = i2c;
 767
 768         ret = wm8971_init(socdev);
 769         if (ret < 0)
 770                 pr_err("failed to initialise WM8971\n");
 771
 772         return ret;
 773 }
 774
 775 static int wm8971_i2c_remove(struct i2c_client *client)
 776 {
 777         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 778         kfree(codec->reg_cache);
 779         return 0;
 780 }
 781
 782 static const struct i2c_device_id wm8971_i2c_id[] = {
 783         { "wm8971", 0 },
 784         { }
 785 };
 786 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
 787
 788 static struct i2c_driver wm8971_i2c_driver = {
 789         .driver = {
 790                 .name = "WM8971 I2C Codec",
 791                 .owner = THIS_MODULE,
 792         },
 793         .probe    = wm8971_i2c_probe,
 794         .remove   = wm8971_i2c_remove,
 795         .id_table = wm8971_i2c_id,
 796 };
 797
 798 static int wm8971_add_i2c_device(struct platform_device *pdev,
 799                                  const struct wm8971_setup_data *setup)
 800 {
 801         struct i2c_board_info info;
 802         struct i2c_adapter *adapter;
 803         struct i2c_client *client;
 804         int ret;
 805
 806         ret = i2c_add_driver(&wm8971_i2c_driver);
 807         if (ret != 0) {
 808                 dev_err(&pdev->dev, "can't add i2c driver\n");
 809                 return ret;
 810         }
 811
 812         memset(&info, 0, sizeof(struct i2c_board_info));
 813         info.addr = setup->i2c_address;
 814         strlcpy(info.type, "wm8971", I2C_NAME_SIZE);
 815
 816         adapter = i2c_get_adapter(setup->i2c_bus);
 817         if (!adapter) {
 818                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 819                         setup->i2c_bus);
 820                 goto err_driver;
 821         }
 822
 823         client = i2c_new_device(adapter, &info);
 824         i2c_put_adapter(adapter);
 825         if (!client) {
 826                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 827                         (unsigned int)info.addr);
 828                 goto err_driver;
 829         }
 830
 831         return 0;
 832
 833 err_driver:
 834         i2c_del_driver(&wm8971_i2c_driver);
 835         return -ENODEV;
 836 }
 837
 838 #endif
 839
 840 static int wm8971_probe(struct platform_device *pdev)
 841 {
 842         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 843         struct wm8971_setup_data *setup;
 844         struct snd_soc_codec *codec;
 845         struct wm8971_priv *wm8971;
 846         int ret = 0;
 847
 848         pr_info("WM8971 Audio Codec %s", WM8971_VERSION);
 849
 850         setup = socdev->codec_data;
 851         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 852         if (codec == NULL)
 853                 return -ENOMEM;
 854
 855         wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
 856         if (wm8971 == NULL) {
 857                 kfree(codec);
 858                 return -ENOMEM;
 859         }
 860
 861         codec->private_data = wm8971;
 862         socdev->card->codec = codec;
 863         mutex_init(&codec->mutex);
 864         INIT_LIST_HEAD(&codec->dapm_widgets);
 865         INIT_LIST_HEAD(&codec->dapm_paths);
 866         wm8971_socdev = socdev;
 867
 868         INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
 869         wm8971_workq = create_workqueue("wm8971");
 870         if (wm8971_workq == NULL) {
 871                 kfree(codec->private_data);
 872                 kfree(codec);
 873                 return -ENOMEM;
 874         }
 875
 876 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 877         if (setup->i2c_address) {
 878                 codec->hw_write = (hw_write_t)i2c_master_send;
 879                 ret = wm8971_add_i2c_device(pdev, setup);
 880         }
 881 #endif
 882         /* Add other interfaces here */
 883
 884         if (ret != 0) {
 885                 destroy_workqueue(wm8971_workq);
 886                 kfree(codec->private_data);
 887                 kfree(codec);
 888         }
 889
 890         return ret;
 891 }
 892
 893 /* power down chip */
 894 static int wm8971_remove(struct platform_device *pdev)
 895 {
 896         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 897         struct snd_soc_codec *codec = socdev->card->codec;
 898
 899         if (codec->control_data)
 900                 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 901         if (wm8971_workq)
 902                 destroy_workqueue(wm8971_workq);
 903         snd_soc_free_pcms(socdev);
 904         snd_soc_dapm_free(socdev);
 905 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 906         i2c_unregister_device(codec->control_data);
 907         i2c_del_driver(&wm8971_i2c_driver);
 908 #endif
 909         kfree(codec->private_data);
 910         kfree(codec);
 911
 912         return 0;
 913 }
 914
 915 struct snd_soc_codec_device soc_codec_dev_wm8971 = {
 916         .probe =        wm8971_probe,
 917         .remove =       wm8971_remove,
 918         .suspend =      wm8971_suspend,
 919         .resume =       wm8971_resume,
 920 };
 921
 922 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971);
 923
 924 static int __init wm8971_modinit(void)
 925 {
 926         return snd_soc_register_dai(&wm8971_dai);
 927 }
 928 module_init(wm8971_modinit);
 929
 930 static void __exit wm8971_exit(void)
 931 {
 932         snd_soc_unregister_dai(&wm8971_dai);
 933 }
 934 module_exit(wm8971_exit);
 935
 936 MODULE_DESCRIPTION("ASoC WM8971 driver");
 937 MODULE_AUTHOR("Lab126");
 938 MODULE_LICENSE("GPL");