sound/soc/codecs/wm8971.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * wm8971.c  --  WM8971 ALSA SoC Audio driver
   4  *
   5  * Copyright 2005 Lab126, Inc.
   6  *
   7  * Author: Kenneth Kiraly <kiraly@lab126.com>
   8  *
   9  * Based on wm8753.c by Liam Girdwood
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/init.h>
  15 #include <linux/delay.h>
  16 #include <linux/pm.h>
  17 #include <linux/i2c.h>
  18 #include <linux/regmap.h>
  19 #include <linux/slab.h>
  20 #include <sound/core.h>
  21 #include <sound/pcm.h>
  22 #include <sound/pcm_params.h>
  23 #include <sound/soc.h>
  24 #include <sound/initval.h>
  25
  26 #include "wm8971.h"
  27
  28 #define WM8971_REG_COUNT                43
  29
  30 /* codec private data */
  31 struct wm8971_priv {
  32         unsigned int sysclk;
  33         struct delayed_work charge_work;
  34         struct regmap *regmap;
  35 };
  36
  37 /*
  38  * wm8971 register cache
  39  * We can't read the WM8971 register space when we
  40  * are using 2 wire for device control, so we cache them instead.
  41  */
  42 static const struct reg_default wm8971_reg_defaults[] = {
  43         {  0, 0x0097 },
  44         {  1, 0x0097 },
  45         {  2, 0x0079 },
  46         {  3, 0x0079 },
  47         {  4, 0x0000 },
  48         {  5, 0x0008 },
  49         {  6, 0x0000 },
  50         {  7, 0x000a },
  51         {  8, 0x0000 },
  52         {  9, 0x0000 },
  53         { 10, 0x00ff },
  54         { 11, 0x00ff },
  55         { 12, 0x000f },
  56         { 13, 0x000f },
  57         { 14, 0x0000 },
  58         { 15, 0x0000 },
  59         { 16, 0x0000 },
  60         { 17, 0x007b },
  61         { 18, 0x0000 },
  62         { 19, 0x0032 },
  63         { 20, 0x0000 },
  64         { 21, 0x00c3 },
  65         { 22, 0x00c3 },
  66         { 23, 0x00c0 },
  67         { 24, 0x0000 },
  68         { 25, 0x0000 },
  69         { 26, 0x0000 },
  70         { 27, 0x0000 },
  71         { 28, 0x0000 },
  72         { 29, 0x0000 },
  73         { 30, 0x0000 },
  74         { 31, 0x0000 },
  75         { 32, 0x0000 },
  76         { 33, 0x0000 },
  77         { 34, 0x0050 },
  78         { 35, 0x0050 },
  79         { 36, 0x0050 },
  80         { 37, 0x0050 },
  81         { 38, 0x0050 },
  82         { 39, 0x0050 },
  83         { 40, 0x0079 },
  84         { 41, 0x0079 },
  85         { 42, 0x0079 },
  86 };
  87
  88 #define wm8971_reset(c) snd_soc_component_write(c, WM8971_RESET, 0)
  89
  90 /* WM8971 Controls */
  91 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
  92 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
  93         "200Hz @ 48kHz" };
  94 static const char *wm8971_treble[] = { "8kHz", "4kHz" };
  95 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
  96 static const char *wm8971_ng_type[] = { "Constant PGA Gain",
  97         "Mute ADC Output" };
  98 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
  99 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
 100         "Mono (Right)", "Digital Mono"};
 101 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
 102 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
 103         "Differential"};
 104 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
 105         "Differential"};
 106 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
 107 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
 108 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
 109         "L + R Invert"};
 110
 111 static const struct soc_enum wm8971_enum[] = {
 112         SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass),        /* 0 */
 113         SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
 114         SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
 115         SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
 116         SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type),    /* 4 */
 117         SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
 118         SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
 119         SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
 120         SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
 121         SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
 122         SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
 123         SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
 124         SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol),    /* 12 */
 125         SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
 126 };
 127
 128 static const struct snd_kcontrol_new wm8971_snd_controls[] = {
 129         SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
 130         SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
 131                      6, 1, 0),
 132         SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
 133
 134         SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
 135                 WM8971_ROUT1V, 7, 1, 0),
 136         SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
 137                 WM8971_ROUT2V, 7, 1, 0),
 138         SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
 139
 140         SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
 141
 142         SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
 143                 WM8971_LOUTM2, 4, 7, 1),
 144         SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
 145                 WM8971_ROUTM2, 4, 7, 1),
 146         SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
 147                 WM8971_MOUTM2, 4, 7, 1),
 148
 149         SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
 150                 WM8971_ROUT1V, 0, 127, 0),
 151         SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
 152                 WM8971_ROUT2V, 0, 127, 0),
 153
 154         SOC_ENUM("Bass Boost", wm8971_enum[0]),
 155         SOC_ENUM("Bass Filter", wm8971_enum[1]),
 156         SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
 157
 158         SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
 159         SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
 160
 161         SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
 162
 163         SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
 164         SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
 165
 166         SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
 167         SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
 168         SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
 169         SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
 170         SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
 171         SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
 172         SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
 173         SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
 174         SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
 175         SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
 176
 177         SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
 178         SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
 179
 180         SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
 181         SOC_ENUM("Playback Function", wm8971_enum[6]),
 182         SOC_ENUM("Playback Phase", wm8971_enum[7]),
 183
 184         SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
 185 };
 186
 187 /*
 188  * DAPM Controls
 189  */
 190
 191 /* Left Mixer */
 192 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
 193 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
 194 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
 195 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
 196 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
 197 };
 198
 199 /* Right Mixer */
 200 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
 201 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
 202 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
 203 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
 204 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
 205 };
 206
 207 /* Mono Mixer */
 208 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
 209 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
 210 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
 211 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
 212 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
 213 };
 214
 215 /* Left Line Mux */
 216 static const struct snd_kcontrol_new wm8971_left_line_controls =
 217 SOC_DAPM_ENUM("Route", wm8971_enum[8]);
 218
 219 /* Right Line Mux */
 220 static const struct snd_kcontrol_new wm8971_right_line_controls =
 221 SOC_DAPM_ENUM("Route", wm8971_enum[9]);
 222
 223 /* Left PGA Mux */
 224 static const struct snd_kcontrol_new wm8971_left_pga_controls =
 225 SOC_DAPM_ENUM("Route", wm8971_enum[10]);
 226
 227 /* Right PGA Mux */
 228 static const struct snd_kcontrol_new wm8971_right_pga_controls =
 229 SOC_DAPM_ENUM("Route", wm8971_enum[11]);
 230
 231 /* Mono ADC Mux */
 232 static const struct snd_kcontrol_new wm8971_monomux_controls =
 233 SOC_DAPM_ENUM("Route", wm8971_enum[13]);
 234
 235 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
 236         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 237                 &wm8971_left_mixer_controls[0],
 238                 ARRAY_SIZE(wm8971_left_mixer_controls)),
 239         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 240                 &wm8971_right_mixer_controls[0],
 241                 ARRAY_SIZE(wm8971_right_mixer_controls)),
 242         SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
 243                 &wm8971_mono_mixer_controls[0],
 244                 ARRAY_SIZE(wm8971_mono_mixer_controls)),
 245
 246         SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
 247         SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
 248         SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
 249         SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
 250         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
 251         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
 252         SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
 253
 254         SND_SOC_DAPM_SUPPLY("Mic Bias", WM8971_PWR1, 1, 0, NULL, 0),
 255         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
 256         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
 257
 258         SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
 259                 &wm8971_left_pga_controls),
 260         SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
 261                 &wm8971_right_pga_controls),
 262         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 263                 &wm8971_left_line_controls),
 264         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 265                 &wm8971_right_line_controls),
 266
 267         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 268                 &wm8971_monomux_controls),
 269         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 270                 &wm8971_monomux_controls),
 271
 272         SND_SOC_DAPM_OUTPUT("LOUT1"),
 273         SND_SOC_DAPM_OUTPUT("ROUT1"),
 274         SND_SOC_DAPM_OUTPUT("LOUT2"),
 275         SND_SOC_DAPM_OUTPUT("ROUT2"),
 276         SND_SOC_DAPM_OUTPUT("MONO"),
 277
 278         SND_SOC_DAPM_INPUT("LINPUT1"),
 279         SND_SOC_DAPM_INPUT("RINPUT1"),
 280         SND_SOC_DAPM_INPUT("MIC"),
 281 };
 282
 283 static const struct snd_soc_dapm_route wm8971_dapm_routes[] = {
 284         /* left mixer */
 285         {"Left Mixer", "Playback Switch", "Left DAC"},
 286         {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
 287         {"Left Mixer", "Right Playback Switch", "Right DAC"},
 288         {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
 289
 290         /* right mixer */
 291         {"Right Mixer", "Left Playback Switch", "Left DAC"},
 292         {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
 293         {"Right Mixer", "Playback Switch", "Right DAC"},
 294         {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
 295
 296         /* left out 1 */
 297         {"Left Out 1", NULL, "Left Mixer"},
 298         {"LOUT1", NULL, "Left Out 1"},
 299
 300         /* left out 2 */
 301         {"Left Out 2", NULL, "Left Mixer"},
 302         {"LOUT2", NULL, "Left Out 2"},
 303
 304         /* right out 1 */
 305         {"Right Out 1", NULL, "Right Mixer"},
 306         {"ROUT1", NULL, "Right Out 1"},
 307
 308         /* right out 2 */
 309         {"Right Out 2", NULL, "Right Mixer"},
 310         {"ROUT2", NULL, "Right Out 2"},
 311
 312         /* mono mixer */
 313         {"Mono Mixer", "Left Playback Switch", "Left DAC"},
 314         {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
 315         {"Mono Mixer", "Right Playback Switch", "Right DAC"},
 316         {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
 317
 318         /* mono out */
 319         {"Mono Out", NULL, "Mono Mixer"},
 320         {"MONO1", NULL, "Mono Out"},
 321
 322         /* Left Line Mux */
 323         {"Left Line Mux", "Line", "LINPUT1"},
 324         {"Left Line Mux", "PGA", "Left PGA Mux"},
 325         {"Left Line Mux", "Differential", "Differential Mux"},
 326
 327         /* Right Line Mux */
 328         {"Right Line Mux", "Line", "RINPUT1"},
 329         {"Right Line Mux", "Mic", "MIC"},
 330         {"Right Line Mux", "PGA", "Right PGA Mux"},
 331         {"Right Line Mux", "Differential", "Differential Mux"},
 332
 333         /* Left PGA Mux */
 334         {"Left PGA Mux", "Line", "LINPUT1"},
 335         {"Left PGA Mux", "Differential", "Differential Mux"},
 336
 337         /* Right PGA Mux */
 338         {"Right PGA Mux", "Line", "RINPUT1"},
 339         {"Right PGA Mux", "Differential", "Differential Mux"},
 340
 341         /* Differential Mux */
 342         {"Differential Mux", "Line", "LINPUT1"},
 343         {"Differential Mux", "Line", "RINPUT1"},
 344
 345         /* Left ADC Mux */
 346         {"Left ADC Mux", "Stereo", "Left PGA Mux"},
 347         {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
 348         {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
 349
 350         /* Right ADC Mux */
 351         {"Right ADC Mux", "Stereo", "Right PGA Mux"},
 352         {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
 353         {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
 354
 355         /* ADC */
 356         {"Left ADC", NULL, "Left ADC Mux"},
 357         {"Right ADC", NULL, "Right ADC Mux"},
 358 };
 359
 360 struct _coeff_div {
 361         u32 mclk;
 362         u32 rate;
 363         u16 fs;
 364         u8 sr:5;
 365         u8 usb:1;
 366 };
 367
 368 /* codec hifi mclk clock divider coefficients */
 369 static const struct _coeff_div coeff_div[] = {
 370         /* 8k */
 371         {12288000, 8000, 1536, 0x6, 0x0},
 372         {11289600, 8000, 1408, 0x16, 0x0},
 373         {18432000, 8000, 2304, 0x7, 0x0},
 374         {16934400, 8000, 2112, 0x17, 0x0},
 375         {12000000, 8000, 1500, 0x6, 0x1},
 376
 377         /* 11.025k */
 378         {11289600, 11025, 1024, 0x18, 0x0},
 379         {16934400, 11025, 1536, 0x19, 0x0},
 380         {12000000, 11025, 1088, 0x19, 0x1},
 381
 382         /* 16k */
 383         {12288000, 16000, 768, 0xa, 0x0},
 384         {18432000, 16000, 1152, 0xb, 0x0},
 385         {12000000, 16000, 750, 0xa, 0x1},
 386
 387         /* 22.05k */
 388         {11289600, 22050, 512, 0x1a, 0x0},
 389         {16934400, 22050, 768, 0x1b, 0x0},
 390         {12000000, 22050, 544, 0x1b, 0x1},
 391
 392         /* 32k */
 393         {12288000, 32000, 384, 0xc, 0x0},
 394         {18432000, 32000, 576, 0xd, 0x0},
 395         {12000000, 32000, 375, 0xa, 0x1},
 396
 397         /* 44.1k */
 398         {11289600, 44100, 256, 0x10, 0x0},
 399         {16934400, 44100, 384, 0x11, 0x0},
 400         {12000000, 44100, 272, 0x11, 0x1},
 401
 402         /* 48k */
 403         {12288000, 48000, 256, 0x0, 0x0},
 404         {18432000, 48000, 384, 0x1, 0x0},
 405         {12000000, 48000, 250, 0x0, 0x1},
 406
 407         /* 88.2k */
 408         {11289600, 88200, 128, 0x1e, 0x0},
 409         {16934400, 88200, 192, 0x1f, 0x0},
 410         {12000000, 88200, 136, 0x1f, 0x1},
 411
 412         /* 96k */
 413         {12288000, 96000, 128, 0xe, 0x0},
 414         {18432000, 96000, 192, 0xf, 0x0},
 415         {12000000, 96000, 125, 0xe, 0x1},
 416 };
 417
 418 static int get_coeff(int mclk, int rate)
 419 {
 420         int i;
 421
 422         for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
 423                 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
 424                         return i;
 425         }
 426         return -EINVAL;
 427 }
 428
 429 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 430                 int clk_id, unsigned int freq, int dir)
 431 {
 432         struct snd_soc_component *component = codec_dai->component;
 433         struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component);
 434
 435         switch (freq) {
 436         case 11289600:
 437         case 12000000:
 438         case 12288000:
 439         case 16934400:
 440         case 18432000:
 441                 wm8971->sysclk = freq;
 442                 return 0;
 443         }
 444         return -EINVAL;
 445 }
 446
 447 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
 448                 unsigned int fmt)
 449 {
 450         struct snd_soc_component *component = codec_dai->component;
 451         u16 iface = 0;
 452
 453         /* set master/slave audio interface */
 454         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 455         case SND_SOC_DAIFMT_CBM_CFM:
 456                 iface = 0x0040;
 457                 break;
 458         case SND_SOC_DAIFMT_CBS_CFS:
 459                 break;
 460         default:
 461                 return -EINVAL;
 462         }
 463
 464         /* interface format */
 465         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 466         case SND_SOC_DAIFMT_I2S:
 467                 iface |= 0x0002;
 468                 break;
 469         case SND_SOC_DAIFMT_RIGHT_J:
 470                 break;
 471         case SND_SOC_DAIFMT_LEFT_J:
 472                 iface |= 0x0001;
 473                 break;
 474         case SND_SOC_DAIFMT_DSP_A:
 475                 iface |= 0x0003;
 476                 break;
 477         case SND_SOC_DAIFMT_DSP_B:
 478                 iface |= 0x0013;
 479                 break;
 480         default:
 481                 return -EINVAL;
 482         }
 483
 484         /* clock inversion */
 485         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 486         case SND_SOC_DAIFMT_NB_NF:
 487                 break;
 488         case SND_SOC_DAIFMT_IB_IF:
 489                 iface |= 0x0090;
 490                 break;
 491         case SND_SOC_DAIFMT_IB_NF:
 492                 iface |= 0x0080;
 493                 break;
 494         case SND_SOC_DAIFMT_NB_IF:
 495                 iface |= 0x0010;
 496                 break;
 497         default:
 498                 return -EINVAL;
 499         }
 500
 501         snd_soc_component_write(component, WM8971_IFACE, iface);
 502         return 0;
 503 }
 504
 505 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
 506         struct snd_pcm_hw_params *params,
 507         struct snd_soc_dai *dai)
 508 {
 509         struct snd_soc_component *component = dai->component;
 510         struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component);
 511         u16 iface = snd_soc_component_read32(component, WM8971_IFACE) & 0x1f3;
 512         u16 srate = snd_soc_component_read32(component, WM8971_SRATE) & 0x1c0;
 513         int coeff = get_coeff(wm8971->sysclk, params_rate(params));
 514
 515         /* bit size */
 516         switch (params_width(params)) {
 517         case 16:
 518                 break;
 519         case 20:
 520                 iface |= 0x0004;
 521                 break;
 522         case 24:
 523                 iface |= 0x0008;
 524                 break;
 525         case 32:
 526                 iface |= 0x000c;
 527                 break;
 528         }
 529
 530         /* set iface & srate */
 531         snd_soc_component_write(component, WM8971_IFACE, iface);
 532         if (coeff >= 0)
 533                 snd_soc_component_write(component, WM8971_SRATE, srate |
 534                         (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
 535
 536         return 0;
 537 }
 538
 539 static int wm8971_mute(struct snd_soc_dai *dai, int mute)
 540 {
 541         struct snd_soc_component *component = dai->component;
 542         u16 mute_reg = snd_soc_component_read32(component, WM8971_ADCDAC) & 0xfff7;
 543
 544         if (mute)
 545                 snd_soc_component_write(component, WM8971_ADCDAC, mute_reg | 0x8);
 546         else
 547                 snd_soc_component_write(component, WM8971_ADCDAC, mute_reg);
 548         return 0;
 549 }
 550
 551 static void wm8971_charge_work(struct work_struct *work)
 552 {
 553         struct wm8971_priv *wm8971 =
 554                 container_of(work, struct wm8971_priv, charge_work.work);
 555
 556         /* Set to 500k */
 557         regmap_update_bits(wm8971->regmap, WM8971_PWR1, 0x0180, 0x0100);
 558 }
 559
 560 static int wm8971_set_bias_level(struct snd_soc_component *component,
 561         enum snd_soc_bias_level level)
 562 {
 563         struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component);
 564         u16 pwr_reg = snd_soc_component_read32(component, WM8971_PWR1) & 0xfe3e;
 565
 566         switch (level) {
 567         case SND_SOC_BIAS_ON:
 568                 /* set vmid to 50k and unmute dac */
 569                 snd_soc_component_write(component, WM8971_PWR1, pwr_reg | 0x00c1);
 570                 break;
 571         case SND_SOC_BIAS_PREPARE:
 572                 /* Wait until fully charged */
 573                 flush_delayed_work(&wm8971->charge_work);
 574                 break;
 575         case SND_SOC_BIAS_STANDBY:
 576                 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
 577                         snd_soc_component_cache_sync(component);
 578                         /* charge output caps - set vmid to 5k for quick power up */
 579                         snd_soc_component_write(component, WM8971_PWR1, pwr_reg | 0x01c0);
 580                         queue_delayed_work(system_power_efficient_wq,
 581                                 &wm8971->charge_work, msecs_to_jiffies(1000));
 582                 } else {
 583                         /* mute dac and set vmid to 500k, enable VREF */
 584                         snd_soc_component_write(component, WM8971_PWR1, pwr_reg | 0x0140);
 585                 }
 586
 587                 break;
 588         case SND_SOC_BIAS_OFF:
 589                 cancel_delayed_work_sync(&wm8971->charge_work);
 590                 snd_soc_component_write(component, WM8971_PWR1, 0x0001);
 591                 break;
 592         }
 593         return 0;
 594 }
 595
 596 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 597                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
 598                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
 599
 600 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 601         SNDRV_PCM_FMTBIT_S24_LE)
 602
 603 static const struct snd_soc_dai_ops wm8971_dai_ops = {
 604         .hw_params      = wm8971_pcm_hw_params,
 605         .digital_mute   = wm8971_mute,
 606         .set_fmt        = wm8971_set_dai_fmt,
 607         .set_sysclk     = wm8971_set_dai_sysclk,
 608 };
 609
 610 static struct snd_soc_dai_driver wm8971_dai = {
 611         .name = "wm8971-hifi",
 612         .playback = {
 613                 .stream_name = "Playback",
 614                 .channels_min = 1,
 615                 .channels_max = 2,
 616                 .rates = WM8971_RATES,
 617                 .formats = WM8971_FORMATS,},
 618         .capture = {
 619                 .stream_name = "Capture",
 620                 .channels_min = 1,
 621                 .channels_max = 2,
 622                 .rates = WM8971_RATES,
 623                 .formats = WM8971_FORMATS,},
 624         .ops = &wm8971_dai_ops,
 625 };
 626
 627 static int wm8971_probe(struct snd_soc_component *component)
 628 {
 629         struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component);
 630
 631         INIT_DELAYED_WORK(&wm8971->charge_work, wm8971_charge_work);
 632
 633         wm8971_reset(component);
 634
 635         /* set the update bits */
 636         snd_soc_component_update_bits(component, WM8971_LDAC, 0x0100, 0x0100);
 637         snd_soc_component_update_bits(component, WM8971_RDAC, 0x0100, 0x0100);
 638         snd_soc_component_update_bits(component, WM8971_LOUT1V, 0x0100, 0x0100);
 639         snd_soc_component_update_bits(component, WM8971_ROUT1V, 0x0100, 0x0100);
 640         snd_soc_component_update_bits(component, WM8971_LOUT2V, 0x0100, 0x0100);
 641         snd_soc_component_update_bits(component, WM8971_ROUT2V, 0x0100, 0x0100);
 642         snd_soc_component_update_bits(component, WM8971_LINVOL, 0x0100, 0x0100);
 643         snd_soc_component_update_bits(component, WM8971_RINVOL, 0x0100, 0x0100);
 644
 645         return 0;
 646 }
 647
 648 static const struct snd_soc_component_driver soc_component_dev_wm8971 = {
 649         .probe                  = wm8971_probe,
 650         .set_bias_level         = wm8971_set_bias_level,
 651         .controls               = wm8971_snd_controls,
 652         .num_controls           = ARRAY_SIZE(wm8971_snd_controls),
 653         .dapm_widgets           = wm8971_dapm_widgets,
 654         .num_dapm_widgets       = ARRAY_SIZE(wm8971_dapm_widgets),
 655         .dapm_routes            = wm8971_dapm_routes,
 656         .num_dapm_routes        = ARRAY_SIZE(wm8971_dapm_routes),
 657         .suspend_bias_off       = 1,
 658         .idle_bias_on           = 1,
 659         .use_pmdown_time        = 1,
 660         .endianness             = 1,
 661         .non_legacy_dai_naming  = 1,
 662 };
 663
 664 static const struct regmap_config wm8971_regmap = {
 665         .reg_bits = 7,
 666         .val_bits = 9,
 667         .max_register = WM8971_MOUTV,
 668
 669         .reg_defaults = wm8971_reg_defaults,
 670         .num_reg_defaults = ARRAY_SIZE(wm8971_reg_defaults),
 671         .cache_type = REGCACHE_RBTREE,
 672 };
 673
 674 static int wm8971_i2c_probe(struct i2c_client *i2c,
 675                             const struct i2c_device_id *id)
 676 {
 677         struct wm8971_priv *wm8971;
 678         int ret;
 679
 680         wm8971 = devm_kzalloc(&i2c->dev, sizeof(struct wm8971_priv),
 681                               GFP_KERNEL);
 682         if (wm8971 == NULL)
 683                 return -ENOMEM;
 684
 685         wm8971->regmap = devm_regmap_init_i2c(i2c, &wm8971_regmap);
 686         if (IS_ERR(wm8971->regmap))
 687                 return PTR_ERR(wm8971->regmap);
 688
 689         i2c_set_clientdata(i2c, wm8971);
 690
 691         ret = devm_snd_soc_register_component(&i2c->dev,
 692                         &soc_component_dev_wm8971, &wm8971_dai, 1);
 693
 694         return ret;
 695 }
 696
 697 static const struct i2c_device_id wm8971_i2c_id[] = {
 698         { "wm8971", 0 },
 699         { }
 700 };
 701 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
 702
 703 static struct i2c_driver wm8971_i2c_driver = {
 704         .driver = {
 705                 .name = "wm8971",
 706         },
 707         .probe =    wm8971_i2c_probe,
 708         .id_table = wm8971_i2c_id,
 709 };
 710
 711 module_i2c_driver(wm8971_i2c_driver);
 712
 713 MODULE_DESCRIPTION("ASoC WM8971 driver");
 714 MODULE_AUTHOR("Lab126");
 715 MODULE_LICENSE("GPL");