712 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * wm8971.c -- WM8971 ALSA SoC Audio driver4 *5 * Copyright 2005 Lab126, Inc.6 *7 * Author: Kenneth Kiraly <kiraly@lab126.com>8 *9 * Based on wm8753.c by Liam Girdwood10 */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 4329 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 cache39 * We can't read the WM8971 register space when we40 * 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 Controls189 */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 else547 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" },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