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 */ 31struct 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 */ 42static 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 */ 91static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" }; 92static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz", 93 "200Hz @ 48kHz" }; 94static const char *wm8971_treble[] = { "8kHz", "4kHz" }; 95static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" }; 96static const char *wm8971_ng_type[] = { "Constant PGA Gain", 97 "Mute ADC Output" }; 98static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; 99static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)", 100 "Mono (Right)", "Digital Mono"}; 101static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" }; 102static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA", 103 "Differential"}; 104static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA", 105 "Differential"}; 106static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"}; 107static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"}; 108static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert", 109 "L + R Invert"}; 110 111static 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 128static 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 */ 192static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = { 193SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0), 194SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0), 195SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0), 196SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0), 197}; 198 199/* Right Mixer */ 200static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = { 201SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0), 202SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0), 203SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0), 204SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0), 205}; 206 207/* Mono Mixer */ 208static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = { 209SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0), 210SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0), 211SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0), 212SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0), 213}; 214 215/* Left Line Mux */ 216static const struct snd_kcontrol_new wm8971_left_line_controls = 217SOC_DAPM_ENUM("Route", wm8971_enum[8]); 218 219/* Right Line Mux */ 220static const struct snd_kcontrol_new wm8971_right_line_controls = 221SOC_DAPM_ENUM("Route", wm8971_enum[9]); 222 223/* Left PGA Mux */ 224static const struct snd_kcontrol_new wm8971_left_pga_controls = 225SOC_DAPM_ENUM("Route", wm8971_enum[10]); 226 227/* Right PGA Mux */ 228static const struct snd_kcontrol_new wm8971_right_pga_controls = 229SOC_DAPM_ENUM("Route", wm8971_enum[11]); 230 231/* Mono ADC Mux */ 232static const struct snd_kcontrol_new wm8971_monomux_controls = 233SOC_DAPM_ENUM("Route", wm8971_enum[13]); 234 235static 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 283static 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 360struct _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 */ 369static 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 418static 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 429static 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 447static 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 505static 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_read(component, WM8971_IFACE) & 0x1f3; 512 u16 srate = snd_soc_component_read(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 539static int wm8971_mute(struct snd_soc_dai *dai, int mute, int direction) 540{ 541 struct snd_soc_component *component = dai->component; 542 u16 mute_reg = snd_soc_component_read(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 551static 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 560static 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_read(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 603static const struct snd_soc_dai_ops wm8971_dai_ops = { 604 .hw_params = wm8971_pcm_hw_params, 605 .mute_stream = wm8971_mute, 606 .set_fmt = wm8971_set_dai_fmt, 607 .set_sysclk = wm8971_set_dai_sysclk, 608 .no_capture_mute = 1, 609}; 610 611static struct snd_soc_dai_driver wm8971_dai = { 612 .name = "wm8971-hifi", 613 .playback = { 614 .stream_name = "Playback", 615 .channels_min = 1, 616 .channels_max = 2, 617 .rates = WM8971_RATES, 618 .formats = WM8971_FORMATS,}, 619 .capture = { 620 .stream_name = "Capture", 621 .channels_min = 1, 622 .channels_max = 2, 623 .rates = WM8971_RATES, 624 .formats = WM8971_FORMATS,}, 625 .ops = &wm8971_dai_ops, 626}; 627 628static int wm8971_probe(struct snd_soc_component *component) 629{ 630 struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component); 631 632 INIT_DELAYED_WORK(&wm8971->charge_work, wm8971_charge_work); 633 634 wm8971_reset(component); 635 636 /* set the update bits */ 637 snd_soc_component_update_bits(component, WM8971_LDAC, 0x0100, 0x0100); 638 snd_soc_component_update_bits(component, WM8971_RDAC, 0x0100, 0x0100); 639 snd_soc_component_update_bits(component, WM8971_LOUT1V, 0x0100, 0x0100); 640 snd_soc_component_update_bits(component, WM8971_ROUT1V, 0x0100, 0x0100); 641 snd_soc_component_update_bits(component, WM8971_LOUT2V, 0x0100, 0x0100); 642 snd_soc_component_update_bits(component, WM8971_ROUT2V, 0x0100, 0x0100); 643 snd_soc_component_update_bits(component, WM8971_LINVOL, 0x0100, 0x0100); 644 snd_soc_component_update_bits(component, WM8971_RINVOL, 0x0100, 0x0100); 645 646 return 0; 647} 648 649static const struct snd_soc_component_driver soc_component_dev_wm8971 = { 650 .probe = wm8971_probe, 651 .set_bias_level = wm8971_set_bias_level, 652 .controls = wm8971_snd_controls, 653 .num_controls = ARRAY_SIZE(wm8971_snd_controls), 654 .dapm_widgets = wm8971_dapm_widgets, 655 .num_dapm_widgets = ARRAY_SIZE(wm8971_dapm_widgets), 656 .dapm_routes = wm8971_dapm_routes, 657 .num_dapm_routes = ARRAY_SIZE(wm8971_dapm_routes), 658 .suspend_bias_off = 1, 659 .idle_bias_on = 1, 660 .use_pmdown_time = 1, 661 .endianness = 1, 662}; 663 664static 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_MAPLE, 672}; 673 674static int wm8971_i2c_probe(struct i2c_client *i2c) 675{ 676 struct wm8971_priv *wm8971; 677 678 wm8971 = devm_kzalloc(&i2c->dev, sizeof(struct wm8971_priv), 679 GFP_KERNEL); 680 if (wm8971 == NULL) 681 return -ENOMEM; 682 683 wm8971->regmap = devm_regmap_init_i2c(i2c, &wm8971_regmap); 684 if (IS_ERR(wm8971->regmap)) 685 return PTR_ERR(wm8971->regmap); 686 687 i2c_set_clientdata(i2c, wm8971); 688 689 return devm_snd_soc_register_component(&i2c->dev, 690 &soc_component_dev_wm8971, &wm8971_dai, 1); 691} 692 693static const struct i2c_device_id wm8971_i2c_id[] = { 694 { "wm8971", 0 }, 695 { } 696}; 697MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id); 698 699static struct i2c_driver wm8971_i2c_driver = { 700 .driver = { 701 .name = "wm8971", 702 }, 703 .probe = wm8971_i2c_probe, 704 .id_table = wm8971_i2c_id, 705}; 706 707module_i2c_driver(wm8971_i2c_driver); 708 709MODULE_DESCRIPTION("ASoC WM8971 driver"); 710MODULE_AUTHOR("Lab126"); 711MODULE_LICENSE("GPL"); 712