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         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 = codec->private_data;
 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_device *socdev = rtd->socdev;
 495         struct snd_soc_codec *codec = socdev->card->codec;
 496         struct wm8971_priv *wm8971 = codec->private_data;
 497         u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
 498         u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
 499         int coeff = get_coeff(wm8971->sysclk, params_rate(params));
 500
 501         /* bit size */
 502         switch (params_format(params)) {
 503         case SNDRV_PCM_FORMAT_S16_LE:
 504                 break;
 505         case SNDRV_PCM_FORMAT_S20_3LE:
 506                 iface |= 0x0004;
 507                 break;
 508         case SNDRV_PCM_FORMAT_S24_LE:
 509                 iface |= 0x0008;
 510                 break;
 511         case SNDRV_PCM_FORMAT_S32_LE:
 512                 iface |= 0x000c;
 513                 break;
 514         }
 515
 516         /* set iface & srate */
 517         snd_soc_write(codec, WM8971_IFACE, iface);
 518         if (coeff >= 0)
 519                 snd_soc_write(codec, WM8971_SRATE, srate |
 520                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 521
 522         return 0;
 523 }
 524
 525 static int wm8971_mute(struct snd_soc_dai *dai, int mute)
 526 {
 527         struct snd_soc_codec *codec = dai->codec;
 528         u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7;
 529
 530         if (mute)
 531                 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
 532         else
 533                 snd_soc_write(codec, WM8971_ADCDAC, mute_reg);
 534         return 0;
 535 }
 536
 537 static int wm8971_set_bias_level(struct snd_soc_codec *codec,
 538         enum snd_soc_bias_level level)
 539 {
 540         u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 541
 542         switch (level) {
 543         case SND_SOC_BIAS_ON:
 544                 /* set vmid to 50k and unmute dac */
 545                 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
 546                 break;
 547         case SND_SOC_BIAS_PREPARE:
 548                 break;
 549         case SND_SOC_BIAS_STANDBY:
 550                 /* mute dac and set vmid to 500k, enable VREF */
 551                 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
 552                 break;
 553         case SND_SOC_BIAS_OFF:
 554                 snd_soc_write(codec, WM8971_PWR1, 0x0001);
 555                 break;
 556         }
 557         codec->bias_level = level;
 558         return 0;
 559 }
 560
 561 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 562                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 563                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 564
 565 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 566         SNDRV_PCM_FMTBIT_S24_LE)
 567
 568 static struct snd_soc_dai_ops wm8971_dai_ops = {
 569         .hw_params      = wm8971_pcm_hw_params,
 570         .digital_mute   = wm8971_mute,
 571         .set_fmt        = wm8971_set_dai_fmt,
 572         .set_sysclk     = wm8971_set_dai_sysclk,
 573 };
 574
 575 struct snd_soc_dai wm8971_dai = {
 576         .name = "WM8971",
 577         .playback = {
 578                 .stream_name = "Playback",
 579                 .channels_min = 1,
 580                 .channels_max = 2,
 581                 .rates = WM8971_RATES,
 582                 .formats = WM8971_FORMATS,},
 583         .capture = {
 584                 .stream_name = "Capture",
 585                 .channels_min = 1,
 586                 .channels_max = 2,
 587                 .rates = WM8971_RATES,
 588                 .formats = WM8971_FORMATS,},
 589         .ops = &wm8971_dai_ops,
 590 };
 591 EXPORT_SYMBOL_GPL(wm8971_dai);
 592
 593 static void wm8971_work(struct work_struct *work)
 594 {
 595         struct snd_soc_codec *codec =
 596                 container_of(work, struct snd_soc_codec, delayed_work.work);
 597         wm8971_set_bias_level(codec, codec->bias_level);
 598 }
 599
 600 static int wm8971_suspend(struct platform_device *pdev, pm_message_t state)
 601 {
 602         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 603         struct snd_soc_codec *codec = socdev->card->codec;
 604
 605         wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 606         return 0;
 607 }
 608
 609 static int wm8971_resume(struct platform_device *pdev)
 610 {
 611         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 612         struct snd_soc_codec *codec = socdev->card->codec;
 613         int i;
 614         u8 data[2];
 615         u16 *cache = codec->reg_cache;
 616         u16 reg;
 617
 618         /* Sync reg_cache with the hardware */
 619         for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) {
 620                 if (i + 1 == WM8971_RESET)
 621                         continue;
 622                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 623                 data[1] = cache[i] & 0x00ff;
 624                 codec->hw_write(codec->control_data, data, 2);
 625         }
 626
 627         wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 628
 629         /* charge wm8971 caps */
 630         if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
 631                 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 632                 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
 633                 codec->bias_level = SND_SOC_BIAS_ON;
 634                 queue_delayed_work(wm8971_workq, &codec->delayed_work,
 635                         msecs_to_jiffies(1000));
 636         }
 637
 638         return 0;
 639 }
 640
 641 static int wm8971_init(struct snd_soc_device *socdev,
 642                        enum snd_soc_control_type control)
 643 {
 644         struct snd_soc_codec *codec = socdev->card->codec;
 645         int reg, ret = 0;
 646
 647         codec->name = "WM8971";
 648         codec->owner = THIS_MODULE;
 649         codec->set_bias_level = wm8971_set_bias_level;
 650         codec->dai = &wm8971_dai;
 651         codec->reg_cache_size = ARRAY_SIZE(wm8971_reg);
 652         codec->num_dai = 1;
 653         codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL);
 654
 655         if (codec->reg_cache == NULL)
 656                 return -ENOMEM;
 657
 658         ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
 659         if (ret < 0) {
 660                 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret);
 661                 goto err;
 662         }
 663
 664         wm8971_reset(codec);
 665
 666         /* register pcms */
 667         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 668         if (ret < 0) {
 669                 printk(KERN_ERR "wm8971: failed to create pcms\n");
 670                 goto err;
 671         }
 672
 673         /* charge output caps - set vmid to 5k for quick power up */
 674         reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
 675         snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
 676         codec->bias_level = SND_SOC_BIAS_STANDBY;
 677         queue_delayed_work(wm8971_workq, &codec->delayed_work,
 678                 msecs_to_jiffies(1000));
 679
 680         /* set the update bits */
 681         reg = snd_soc_read(codec, WM8971_LDAC);
 682         snd_soc_write(codec, WM8971_LDAC, reg | 0x0100);
 683         reg = snd_soc_read(codec, WM8971_RDAC);
 684         snd_soc_write(codec, WM8971_RDAC, reg | 0x0100);
 685
 686         reg = snd_soc_read(codec, WM8971_LOUT1V);
 687         snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100);
 688         reg = snd_soc_read(codec, WM8971_ROUT1V);
 689         snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100);
 690
 691         reg = snd_soc_read(codec, WM8971_LOUT2V);
 692         snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100);
 693         reg = snd_soc_read(codec, WM8971_ROUT2V);
 694         snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100);
 695
 696         reg = snd_soc_read(codec, WM8971_LINVOL);
 697         snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100);
 698         reg = snd_soc_read(codec, WM8971_RINVOL);
 699         snd_soc_write(codec, WM8971_RINVOL, reg | 0x0100);
 700
 701         snd_soc_add_controls(codec, wm8971_snd_controls,
 702                                 ARRAY_SIZE(wm8971_snd_controls));
 703         wm8971_add_widgets(codec);
 704
 705         return ret;
 706
 707 err:
 708         kfree(codec->reg_cache);
 709         return ret;
 710 }
 711
 712 /* If the i2c layer weren't so broken, we could pass this kind of data
 713    around */
 714 static struct snd_soc_device *wm8971_socdev;
 715
 716 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 717
 718 static int wm8971_i2c_probe(struct i2c_client *i2c,
 719                             const struct i2c_device_id *id)
 720 {
 721         struct snd_soc_device *socdev = wm8971_socdev;
 722         struct snd_soc_codec *codec = socdev->card->codec;
 723         int ret;
 724
 725         i2c_set_clientdata(i2c, codec);
 726
 727         codec->control_data = i2c;
 728
 729         ret = wm8971_init(socdev, SND_SOC_I2C);
 730         if (ret < 0)
 731                 pr_err("failed to initialise WM8971\n");
 732
 733         return ret;
 734 }
 735
 736 static int wm8971_i2c_remove(struct i2c_client *client)
 737 {
 738         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 739         kfree(codec->reg_cache);
 740         return 0;
 741 }
 742
 743 static const struct i2c_device_id wm8971_i2c_id[] = {
 744         { "wm8971", 0 },
 745         { }
 746 };
 747 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
 748
 749 static struct i2c_driver wm8971_i2c_driver = {
 750         .driver = {
 751                 .name = "WM8971 I2C Codec",
 752                 .owner = THIS_MODULE,
 753         },
 754         .probe    = wm8971_i2c_probe,
 755         .remove   = wm8971_i2c_remove,
 756         .id_table = wm8971_i2c_id,
 757 };
 758
 759 static int wm8971_add_i2c_device(struct platform_device *pdev,
 760                                  const struct wm8971_setup_data *setup)
 761 {
 762         struct i2c_board_info info;
 763         struct i2c_adapter *adapter;
 764         struct i2c_client *client;
 765         int ret;
 766
 767         ret = i2c_add_driver(&wm8971_i2c_driver);
 768         if (ret != 0) {
 769                 dev_err(&pdev->dev, "can't add i2c driver\n");
 770                 return ret;
 771         }
 772
 773         memset(&info, 0, sizeof(struct i2c_board_info));
 774         info.addr = setup->i2c_address;
 775         strlcpy(info.type, "wm8971", I2C_NAME_SIZE);
 776
 777         adapter = i2c_get_adapter(setup->i2c_bus);
 778         if (!adapter) {
 779                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 780                         setup->i2c_bus);
 781                 goto err_driver;
 782         }
 783
 784         client = i2c_new_device(adapter, &info);
 785         i2c_put_adapter(adapter);
 786         if (!client) {
 787                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 788                         (unsigned int)info.addr);
 789                 goto err_driver;
 790         }
 791
 792         return 0;
 793
 794 err_driver:
 795         i2c_del_driver(&wm8971_i2c_driver);
 796         return -ENODEV;
 797 }
 798
 799 #endif
 800
 801 static int wm8971_probe(struct platform_device *pdev)
 802 {
 803         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 804         struct wm8971_setup_data *setup;
 805         struct snd_soc_codec *codec;
 806         struct wm8971_priv *wm8971;
 807         int ret = 0;
 808
 809         pr_info("WM8971 Audio Codec %s", WM8971_VERSION);
 810
 811         setup = socdev->codec_data;
 812         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 813         if (codec == NULL)
 814                 return -ENOMEM;
 815
 816         wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
 817         if (wm8971 == NULL) {
 818                 kfree(codec);
 819                 return -ENOMEM;
 820         }
 821
 822         codec->private_data = wm8971;
 823         socdev->card->codec = codec;
 824         mutex_init(&codec->mutex);
 825         INIT_LIST_HEAD(&codec->dapm_widgets);
 826         INIT_LIST_HEAD(&codec->dapm_paths);
 827         wm8971_socdev = socdev;
 828
 829         INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
 830         wm8971_workq = create_workqueue("wm8971");
 831         if (wm8971_workq == NULL) {
 832                 kfree(codec->private_data);
 833                 kfree(codec);
 834                 return -ENOMEM;
 835         }
 836
 837 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 838         if (setup->i2c_address) {
 839                 ret = wm8971_add_i2c_device(pdev, setup);
 840         }
 841 #endif
 842         /* Add other interfaces here */
 843
 844         if (ret != 0) {
 845                 destroy_workqueue(wm8971_workq);
 846                 kfree(codec->private_data);
 847                 kfree(codec);
 848         }
 849
 850         return ret;
 851 }
 852
 853 /* power down chip */
 854 static int wm8971_remove(struct platform_device *pdev)
 855 {
 856         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 857         struct snd_soc_codec *codec = socdev->card->codec;
 858
 859         if (codec->control_data)
 860                 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
 861         if (wm8971_workq)
 862                 destroy_workqueue(wm8971_workq);
 863         snd_soc_free_pcms(socdev);
 864         snd_soc_dapm_free(socdev);
 865 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
 866         i2c_unregister_device(codec->control_data);
 867         i2c_del_driver(&wm8971_i2c_driver);
 868 #endif
 869         kfree(codec->private_data);
 870         kfree(codec);
 871
 872         return 0;
 873 }
 874
 875 struct snd_soc_codec_device soc_codec_dev_wm8971 = {
 876         .probe =        wm8971_probe,
 877         .remove =       wm8971_remove,
 878         .suspend =      wm8971_suspend,
 879         .resume =       wm8971_resume,
 880 };
 881
 882 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971);
 883
 884 static int __init wm8971_modinit(void)
 885 {
 886         return snd_soc_register_dai(&wm8971_dai);
 887 }
 888 module_init(wm8971_modinit);
 889
 890 static void __exit wm8971_exit(void)
 891 {
 892         snd_soc_unregister_dai(&wm8971_dai);
 893 }
 894 module_exit(wm8971_exit);
 895
 896 MODULE_DESCRIPTION("ASoC WM8971 driver");
 897 MODULE_AUTHOR("Lab126");
 898 MODULE_LICENSE("GPL");