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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * wm8770.c -- WM8770 ALSA SoC Audio driver4 *5 * Copyright 2010 Wolfson Microelectronics plc6 *7 * Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>8 */9 10#include <linux/mod_devicetable.h>11#include <linux/module.h>12#include <linux/moduleparam.h>13#include <linux/init.h>14#include <linux/delay.h>15#include <linux/pm.h>16#include <linux/spi/spi.h>17#include <linux/regmap.h>18#include <linux/regulator/consumer.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#include <sound/tlv.h>26 27#include "wm8770.h"28 29#define WM8770_NUM_SUPPLIES 330static const char *wm8770_supply_names[WM8770_NUM_SUPPLIES] = {31 "AVDD1",32 "AVDD2",33 "DVDD"34};35 36static const struct reg_default wm8770_reg_defaults[] = {37 { 0, 0x7f },38 { 1, 0x7f },39 { 2, 0x7f },40 { 3, 0x7f },41 { 4, 0x7f },42 { 5, 0x7f },43 { 6, 0x7f },44 { 7, 0x7f },45 { 8, 0x7f },46 { 9, 0xff },47 { 10, 0xff },48 { 11, 0xff },49 { 12, 0xff },50 { 13, 0xff },51 { 14, 0xff },52 { 15, 0xff },53 { 16, 0xff },54 { 17, 0xff },55 { 18, 0 },56 { 19, 0x90 },57 { 20, 0 },58 { 21, 0 },59 { 22, 0x22 },60 { 23, 0x22 },61 { 24, 0x3e },62 { 25, 0xc },63 { 26, 0xc },64 { 27, 0x100 },65 { 28, 0x189 },66 { 29, 0x189 },67 { 30, 0x8770 },68};69 70static bool wm8770_volatile_reg(struct device *dev, unsigned int reg)71{72 switch (reg) {73 case WM8770_RESET:74 return true;75 default:76 return false;77 }78}79 80struct wm8770_priv {81 struct regmap *regmap;82 struct regulator_bulk_data supplies[WM8770_NUM_SUPPLIES];83 struct notifier_block disable_nb[WM8770_NUM_SUPPLIES];84 struct snd_soc_component *component;85 int sysclk;86};87 88static int vout12supply_event(struct snd_soc_dapm_widget *w,89 struct snd_kcontrol *kcontrol, int event);90static int vout34supply_event(struct snd_soc_dapm_widget *w,91 struct snd_kcontrol *kcontrol, int event);92 93/*94 * We can't use the same notifier block for more than one supply and95 * there's no way I can see to get from a callback to the caller96 * except container_of().97 */98#define WM8770_REGULATOR_EVENT(n) \99static int wm8770_regulator_event_##n(struct notifier_block *nb, \100 unsigned long event, void *data) \101{ \102 struct wm8770_priv *wm8770 = container_of(nb, struct wm8770_priv, \103 disable_nb[n]); \104 if (event & REGULATOR_EVENT_DISABLE) { \105 regcache_mark_dirty(wm8770->regmap); \106 } \107 return 0; \108}109 110WM8770_REGULATOR_EVENT(0)111WM8770_REGULATOR_EVENT(1)112WM8770_REGULATOR_EVENT(2)113 114static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0);115static const DECLARE_TLV_DB_SCALE(dac_dig_tlv, -12750, 50, 1);116static const DECLARE_TLV_DB_SCALE(dac_alg_tlv, -12700, 100, 1);117 118static const char *dac_phase_text[][2] = {119 { "DAC1 Normal", "DAC1 Inverted" },120 { "DAC2 Normal", "DAC2 Inverted" },121 { "DAC3 Normal", "DAC3 Inverted" },122 { "DAC4 Normal", "DAC4 Inverted" },123};124 125static const struct soc_enum dac_phase[] = {126 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 0, 1, 2, dac_phase_text[0]),127 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 2, 3, 2, dac_phase_text[1]),128 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 4, 5, 2, dac_phase_text[2]),129 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 6, 7, 2, dac_phase_text[3]),130};131 132static const struct snd_kcontrol_new wm8770_snd_controls[] = {133 /* global DAC playback controls */134 SOC_SINGLE_TLV("DAC Playback Volume", WM8770_MSDIGVOL, 0, 255, 0,135 dac_dig_tlv),136 SOC_SINGLE("DAC Playback Switch", WM8770_DACMUTE, 4, 1, 1),137 SOC_SINGLE("DAC Playback ZC Switch", WM8770_DACCTRL1, 0, 1, 0),138 139 /* global VOUT playback controls */140 SOC_SINGLE_TLV("VOUT Playback Volume", WM8770_MSALGVOL, 0, 127, 0,141 dac_alg_tlv),142 SOC_SINGLE("VOUT Playback ZC Switch", WM8770_MSALGVOL, 7, 1, 0),143 144 /* VOUT1/2/3/4 specific controls */145 SOC_DOUBLE_R_TLV("VOUT1 Playback Volume", WM8770_VOUT1LVOL,146 WM8770_VOUT1RVOL, 0, 127, 0, dac_alg_tlv),147 SOC_DOUBLE_R("VOUT1 Playback ZC Switch", WM8770_VOUT1LVOL,148 WM8770_VOUT1RVOL, 7, 1, 0),149 SOC_DOUBLE_R_TLV("VOUT2 Playback Volume", WM8770_VOUT2LVOL,150 WM8770_VOUT2RVOL, 0, 127, 0, dac_alg_tlv),151 SOC_DOUBLE_R("VOUT2 Playback ZC Switch", WM8770_VOUT2LVOL,152 WM8770_VOUT2RVOL, 7, 1, 0),153 SOC_DOUBLE_R_TLV("VOUT3 Playback Volume", WM8770_VOUT3LVOL,154 WM8770_VOUT3RVOL, 0, 127, 0, dac_alg_tlv),155 SOC_DOUBLE_R("VOUT3 Playback ZC Switch", WM8770_VOUT3LVOL,156 WM8770_VOUT3RVOL, 7, 1, 0),157 SOC_DOUBLE_R_TLV("VOUT4 Playback Volume", WM8770_VOUT4LVOL,158 WM8770_VOUT4RVOL, 0, 127, 0, dac_alg_tlv),159 SOC_DOUBLE_R("VOUT4 Playback ZC Switch", WM8770_VOUT4LVOL,160 WM8770_VOUT4RVOL, 7, 1, 0),161 162 /* DAC1/2/3/4 specific controls */163 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", WM8770_DAC1LVOL,164 WM8770_DAC1RVOL, 0, 255, 0, dac_dig_tlv),165 SOC_SINGLE("DAC1 Deemphasis Switch", WM8770_DACCTRL2, 0, 1, 0),166 SOC_ENUM("DAC1 Phase", dac_phase[0]),167 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", WM8770_DAC2LVOL,168 WM8770_DAC2RVOL, 0, 255, 0, dac_dig_tlv),169 SOC_SINGLE("DAC2 Deemphasis Switch", WM8770_DACCTRL2, 1, 1, 0),170 SOC_ENUM("DAC2 Phase", dac_phase[1]),171 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", WM8770_DAC3LVOL,172 WM8770_DAC3RVOL, 0, 255, 0, dac_dig_tlv),173 SOC_SINGLE("DAC3 Deemphasis Switch", WM8770_DACCTRL2, 2, 1, 0),174 SOC_ENUM("DAC3 Phase", dac_phase[2]),175 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", WM8770_DAC4LVOL,176 WM8770_DAC4RVOL, 0, 255, 0, dac_dig_tlv),177 SOC_SINGLE("DAC4 Deemphasis Switch", WM8770_DACCTRL2, 3, 1, 0),178 SOC_ENUM("DAC4 Phase", dac_phase[3]),179 180 /* ADC specific controls */181 SOC_DOUBLE_R_TLV("Capture Volume", WM8770_ADCLCTRL, WM8770_ADCRCTRL,182 0, 31, 0, adc_tlv),183 SOC_DOUBLE_R("Capture Switch", WM8770_ADCLCTRL, WM8770_ADCRCTRL,184 5, 1, 1),185 186 /* other controls */187 SOC_SINGLE("ADC 128x Oversampling Switch", WM8770_MSTRCTRL, 3, 1, 0),188 SOC_SINGLE("ADC Highpass Filter Switch", WM8770_IFACECTRL, 8, 1, 1)189};190 191static const char *ain_text[] = {192 "AIN1", "AIN2", "AIN3", "AIN4",193 "AIN5", "AIN6", "AIN7", "AIN8"194};195 196static SOC_ENUM_DOUBLE_DECL(ain_enum,197 WM8770_ADCMUX, 0, 4, ain_text);198 199static const struct snd_kcontrol_new ain_mux =200 SOC_DAPM_ENUM("Capture Mux", ain_enum);201 202static const struct snd_kcontrol_new vout1_mix_controls[] = {203 SOC_DAPM_SINGLE("DAC1 Switch", WM8770_OUTMUX1, 0, 1, 0),204 SOC_DAPM_SINGLE("AUX1 Switch", WM8770_OUTMUX1, 1, 1, 0),205 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 2, 1, 0)206};207 208static const struct snd_kcontrol_new vout2_mix_controls[] = {209 SOC_DAPM_SINGLE("DAC2 Switch", WM8770_OUTMUX1, 3, 1, 0),210 SOC_DAPM_SINGLE("AUX2 Switch", WM8770_OUTMUX1, 4, 1, 0),211 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 5, 1, 0)212};213 214static const struct snd_kcontrol_new vout3_mix_controls[] = {215 SOC_DAPM_SINGLE("DAC3 Switch", WM8770_OUTMUX2, 0, 1, 0),216 SOC_DAPM_SINGLE("AUX3 Switch", WM8770_OUTMUX2, 1, 1, 0),217 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 2, 1, 0)218};219 220static const struct snd_kcontrol_new vout4_mix_controls[] = {221 SOC_DAPM_SINGLE("DAC4 Switch", WM8770_OUTMUX2, 3, 1, 0),222 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 4, 1, 0)223};224 225static const struct snd_soc_dapm_widget wm8770_dapm_widgets[] = {226 SND_SOC_DAPM_INPUT("AUX1"),227 SND_SOC_DAPM_INPUT("AUX2"),228 SND_SOC_DAPM_INPUT("AUX3"),229 230 SND_SOC_DAPM_INPUT("AIN1"),231 SND_SOC_DAPM_INPUT("AIN2"),232 SND_SOC_DAPM_INPUT("AIN3"),233 SND_SOC_DAPM_INPUT("AIN4"),234 SND_SOC_DAPM_INPUT("AIN5"),235 SND_SOC_DAPM_INPUT("AIN6"),236 SND_SOC_DAPM_INPUT("AIN7"),237 SND_SOC_DAPM_INPUT("AIN8"),238 239 SND_SOC_DAPM_MUX("Capture Mux", WM8770_ADCMUX, 8, 1, &ain_mux),240 241 SND_SOC_DAPM_ADC("ADC", "Capture", WM8770_PWDNCTRL, 1, 1),242 243 SND_SOC_DAPM_DAC("DAC1", "Playback", WM8770_PWDNCTRL, 2, 1),244 SND_SOC_DAPM_DAC("DAC2", "Playback", WM8770_PWDNCTRL, 3, 1),245 SND_SOC_DAPM_DAC("DAC3", "Playback", WM8770_PWDNCTRL, 4, 1),246 SND_SOC_DAPM_DAC("DAC4", "Playback", WM8770_PWDNCTRL, 5, 1),247 248 SND_SOC_DAPM_SUPPLY("VOUT12 Supply", SND_SOC_NOPM, 0, 0,249 vout12supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),250 SND_SOC_DAPM_SUPPLY("VOUT34 Supply", SND_SOC_NOPM, 0, 0,251 vout34supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),252 253 SND_SOC_DAPM_MIXER("VOUT1 Mixer", SND_SOC_NOPM, 0, 0,254 vout1_mix_controls, ARRAY_SIZE(vout1_mix_controls)),255 SND_SOC_DAPM_MIXER("VOUT2 Mixer", SND_SOC_NOPM, 0, 0,256 vout2_mix_controls, ARRAY_SIZE(vout2_mix_controls)),257 SND_SOC_DAPM_MIXER("VOUT3 Mixer", SND_SOC_NOPM, 0, 0,258 vout3_mix_controls, ARRAY_SIZE(vout3_mix_controls)),259 SND_SOC_DAPM_MIXER("VOUT4 Mixer", SND_SOC_NOPM, 0, 0,260 vout4_mix_controls, ARRAY_SIZE(vout4_mix_controls)),261 262 SND_SOC_DAPM_OUTPUT("VOUT1"),263 SND_SOC_DAPM_OUTPUT("VOUT2"),264 SND_SOC_DAPM_OUTPUT("VOUT3"),265 SND_SOC_DAPM_OUTPUT("VOUT4")266};267 268static const struct snd_soc_dapm_route wm8770_intercon[] = {269 { "Capture Mux", "AIN1", "AIN1" },270 { "Capture Mux", "AIN2", "AIN2" },271 { "Capture Mux", "AIN3", "AIN3" },272 { "Capture Mux", "AIN4", "AIN4" },273 { "Capture Mux", "AIN5", "AIN5" },274 { "Capture Mux", "AIN6", "AIN6" },275 { "Capture Mux", "AIN7", "AIN7" },276 { "Capture Mux", "AIN8", "AIN8" },277 278 { "ADC", NULL, "Capture Mux" },279 280 { "VOUT1 Mixer", NULL, "VOUT12 Supply" },281 { "VOUT1 Mixer", "DAC1 Switch", "DAC1" },282 { "VOUT1 Mixer", "AUX1 Switch", "AUX1" },283 { "VOUT1 Mixer", "Bypass Switch", "Capture Mux" },284 285 { "VOUT2 Mixer", NULL, "VOUT12 Supply" },286 { "VOUT2 Mixer", "DAC2 Switch", "DAC2" },287 { "VOUT2 Mixer", "AUX2 Switch", "AUX2" },288 { "VOUT2 Mixer", "Bypass Switch", "Capture Mux" },289 290 { "VOUT3 Mixer", NULL, "VOUT34 Supply" },291 { "VOUT3 Mixer", "DAC3 Switch", "DAC3" },292 { "VOUT3 Mixer", "AUX3 Switch", "AUX3" },293 { "VOUT3 Mixer", "Bypass Switch", "Capture Mux" },294 295 { "VOUT4 Mixer", NULL, "VOUT34 Supply" },296 { "VOUT4 Mixer", "DAC4 Switch", "DAC4" },297 { "VOUT4 Mixer", "Bypass Switch", "Capture Mux" },298 299 { "VOUT1", NULL, "VOUT1 Mixer" },300 { "VOUT2", NULL, "VOUT2 Mixer" },301 { "VOUT3", NULL, "VOUT3 Mixer" },302 { "VOUT4", NULL, "VOUT4 Mixer" }303};304 305static int vout12supply_event(struct snd_soc_dapm_widget *w,306 struct snd_kcontrol *kcontrol, int event)307{308 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);309 310 switch (event) {311 case SND_SOC_DAPM_PRE_PMU:312 snd_soc_component_update_bits(component, WM8770_OUTMUX1, 0x180, 0);313 break;314 case SND_SOC_DAPM_POST_PMD:315 snd_soc_component_update_bits(component, WM8770_OUTMUX1, 0x180, 0x180);316 break;317 }318 319 return 0;320}321 322static int vout34supply_event(struct snd_soc_dapm_widget *w,323 struct snd_kcontrol *kcontrol, int event)324{325 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);326 327 switch (event) {328 case SND_SOC_DAPM_PRE_PMU:329 snd_soc_component_update_bits(component, WM8770_OUTMUX2, 0x180, 0);330 break;331 case SND_SOC_DAPM_POST_PMD:332 snd_soc_component_update_bits(component, WM8770_OUTMUX2, 0x180, 0x180);333 break;334 }335 336 return 0;337}338 339static int wm8770_reset(struct snd_soc_component *component)340{341 return snd_soc_component_write(component, WM8770_RESET, 0);342}343 344static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)345{346 struct snd_soc_component *component;347 int iface, master;348 349 component = dai->component;350 351 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {352 case SND_SOC_DAIFMT_CBM_CFM:353 master = 0x100;354 break;355 case SND_SOC_DAIFMT_CBS_CFS:356 master = 0;357 break;358 default:359 return -EINVAL;360 }361 362 iface = 0;363 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {364 case SND_SOC_DAIFMT_I2S:365 iface |= 0x2;366 break;367 case SND_SOC_DAIFMT_RIGHT_J:368 break;369 case SND_SOC_DAIFMT_LEFT_J:370 iface |= 0x1;371 break;372 default:373 return -EINVAL;374 }375 376 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {377 case SND_SOC_DAIFMT_NB_NF:378 break;379 case SND_SOC_DAIFMT_IB_IF:380 iface |= 0xc;381 break;382 case SND_SOC_DAIFMT_IB_NF:383 iface |= 0x8;384 break;385 case SND_SOC_DAIFMT_NB_IF:386 iface |= 0x4;387 break;388 default:389 return -EINVAL;390 }391 392 snd_soc_component_update_bits(component, WM8770_IFACECTRL, 0xf, iface);393 snd_soc_component_update_bits(component, WM8770_MSTRCTRL, 0x100, master);394 395 return 0;396}397 398static const int mclk_ratios[] = {399 128,400 192,401 256,402 384,403 512,404 768405};406 407static int wm8770_hw_params(struct snd_pcm_substream *substream,408 struct snd_pcm_hw_params *params,409 struct snd_soc_dai *dai)410{411 struct snd_soc_component *component;412 struct wm8770_priv *wm8770;413 int i;414 int iface;415 int shift;416 int ratio;417 418 component = dai->component;419 wm8770 = snd_soc_component_get_drvdata(component);420 421 iface = 0;422 switch (params_width(params)) {423 case 16:424 break;425 case 20:426 iface |= 0x10;427 break;428 case 24:429 iface |= 0x20;430 break;431 case 32:432 iface |= 0x30;433 break;434 }435 436 switch (substream->stream) {437 case SNDRV_PCM_STREAM_PLAYBACK:438 i = 0;439 shift = 4;440 break;441 case SNDRV_PCM_STREAM_CAPTURE:442 i = 2;443 shift = 0;444 break;445 default:446 return -EINVAL;447 }448 449 /* Only need to set MCLK/LRCLK ratio if we're master */450 if (snd_soc_component_read(component, WM8770_MSTRCTRL) & 0x100) {451 for (; i < ARRAY_SIZE(mclk_ratios); ++i) {452 ratio = wm8770->sysclk / params_rate(params);453 if (ratio == mclk_ratios[i])454 break;455 }456 457 if (i == ARRAY_SIZE(mclk_ratios)) {458 dev_err(component->dev,459 "Unable to configure MCLK ratio %d/%d\n",460 wm8770->sysclk, params_rate(params));461 return -EINVAL;462 }463 464 dev_dbg(component->dev, "MCLK is %dfs\n", mclk_ratios[i]);465 466 snd_soc_component_update_bits(component, WM8770_MSTRCTRL, 0x7 << shift,467 i << shift);468 }469 470 snd_soc_component_update_bits(component, WM8770_IFACECTRL, 0x30, iface);471 472 return 0;473}474 475static int wm8770_mute(struct snd_soc_dai *dai, int mute, int direction)476{477 struct snd_soc_component *component;478 479 component = dai->component;480 return snd_soc_component_update_bits(component, WM8770_DACMUTE, 0x10,481 !!mute << 4);482}483 484static int wm8770_set_sysclk(struct snd_soc_dai *dai,485 int clk_id, unsigned int freq, int dir)486{487 struct snd_soc_component *component;488 struct wm8770_priv *wm8770;489 490 component = dai->component;491 wm8770 = snd_soc_component_get_drvdata(component);492 wm8770->sysclk = freq;493 return 0;494}495 496static int wm8770_set_bias_level(struct snd_soc_component *component,497 enum snd_soc_bias_level level)498{499 int ret;500 struct wm8770_priv *wm8770;501 502 wm8770 = snd_soc_component_get_drvdata(component);503 504 switch (level) {505 case SND_SOC_BIAS_ON:506 break;507 case SND_SOC_BIAS_PREPARE:508 break;509 case SND_SOC_BIAS_STANDBY:510 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {511 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),512 wm8770->supplies);513 if (ret) {514 dev_err(component->dev,515 "Failed to enable supplies: %d\n",516 ret);517 return ret;518 }519 520 regcache_sync(wm8770->regmap);521 522 /* global powerup */523 snd_soc_component_write(component, WM8770_PWDNCTRL, 0);524 }525 break;526 case SND_SOC_BIAS_OFF:527 /* global powerdown */528 snd_soc_component_write(component, WM8770_PWDNCTRL, 1);529 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies),530 wm8770->supplies);531 break;532 }533 534 return 0;535}536 537#define WM8770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \538 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)539 540static const struct snd_soc_dai_ops wm8770_dai_ops = {541 .mute_stream = wm8770_mute,542 .hw_params = wm8770_hw_params,543 .set_fmt = wm8770_set_fmt,544 .set_sysclk = wm8770_set_sysclk,545 .no_capture_mute = 1,546};547 548static struct snd_soc_dai_driver wm8770_dai = {549 .name = "wm8770-hifi",550 .playback = {551 .stream_name = "Playback",552 .channels_min = 2,553 .channels_max = 2,554 .rates = SNDRV_PCM_RATE_8000_192000,555 .formats = WM8770_FORMATS556 },557 .capture = {558 .stream_name = "Capture",559 .channels_min = 2,560 .channels_max = 2,561 .rates = SNDRV_PCM_RATE_8000_96000,562 .formats = WM8770_FORMATS563 },564 .ops = &wm8770_dai_ops,565 .symmetric_rate = 1566};567 568static int wm8770_probe(struct snd_soc_component *component)569{570 struct wm8770_priv *wm8770;571 int ret;572 573 wm8770 = snd_soc_component_get_drvdata(component);574 wm8770->component = component;575 576 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),577 wm8770->supplies);578 if (ret) {579 dev_err(component->dev, "Failed to enable supplies: %d\n", ret);580 return ret;581 }582 583 ret = wm8770_reset(component);584 if (ret < 0) {585 dev_err(component->dev, "Failed to issue reset: %d\n", ret);586 goto err_reg_enable;587 }588 589 /* latch the volume update bits */590 snd_soc_component_update_bits(component, WM8770_MSDIGVOL, 0x100, 0x100);591 snd_soc_component_update_bits(component, WM8770_MSALGVOL, 0x100, 0x100);592 snd_soc_component_update_bits(component, WM8770_VOUT1RVOL, 0x100, 0x100);593 snd_soc_component_update_bits(component, WM8770_VOUT2RVOL, 0x100, 0x100);594 snd_soc_component_update_bits(component, WM8770_VOUT3RVOL, 0x100, 0x100);595 snd_soc_component_update_bits(component, WM8770_VOUT4RVOL, 0x100, 0x100);596 snd_soc_component_update_bits(component, WM8770_DAC1RVOL, 0x100, 0x100);597 snd_soc_component_update_bits(component, WM8770_DAC2RVOL, 0x100, 0x100);598 snd_soc_component_update_bits(component, WM8770_DAC3RVOL, 0x100, 0x100);599 snd_soc_component_update_bits(component, WM8770_DAC4RVOL, 0x100, 0x100);600 601 /* mute all DACs */602 snd_soc_component_update_bits(component, WM8770_DACMUTE, 0x10, 0x10);603 604err_reg_enable:605 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);606 return ret;607}608 609static const struct snd_soc_component_driver soc_component_dev_wm8770 = {610 .probe = wm8770_probe,611 .set_bias_level = wm8770_set_bias_level,612 .controls = wm8770_snd_controls,613 .num_controls = ARRAY_SIZE(wm8770_snd_controls),614 .dapm_widgets = wm8770_dapm_widgets,615 .num_dapm_widgets = ARRAY_SIZE(wm8770_dapm_widgets),616 .dapm_routes = wm8770_intercon,617 .num_dapm_routes = ARRAY_SIZE(wm8770_intercon),618 .use_pmdown_time = 1,619 .endianness = 1,620};621 622static const struct of_device_id wm8770_of_match[] = {623 { .compatible = "wlf,wm8770", },624 { }625};626MODULE_DEVICE_TABLE(of, wm8770_of_match);627 628static const struct regmap_config wm8770_regmap = {629 .reg_bits = 7,630 .val_bits = 9,631 .max_register = WM8770_RESET,632 633 .reg_defaults = wm8770_reg_defaults,634 .num_reg_defaults = ARRAY_SIZE(wm8770_reg_defaults),635 .cache_type = REGCACHE_MAPLE,636 637 .volatile_reg = wm8770_volatile_reg,638};639 640static int wm8770_spi_probe(struct spi_device *spi)641{642 struct wm8770_priv *wm8770;643 int ret, i;644 645 wm8770 = devm_kzalloc(&spi->dev, sizeof(struct wm8770_priv),646 GFP_KERNEL);647 if (!wm8770)648 return -ENOMEM;649 650 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++)651 wm8770->supplies[i].supply = wm8770_supply_names[i];652 653 ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8770->supplies),654 wm8770->supplies);655 if (ret) {656 dev_err(&spi->dev, "Failed to request supplies: %d\n", ret);657 return ret;658 }659 660 wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0;661 wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1;662 wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2;663 664 /* This should really be moved into the regulator core */665 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) {666 ret = devm_regulator_register_notifier(667 wm8770->supplies[i].consumer,668 &wm8770->disable_nb[i]);669 if (ret) {670 dev_err(&spi->dev,671 "Failed to register regulator notifier: %d\n",672 ret);673 }674 }675 676 wm8770->regmap = devm_regmap_init_spi(spi, &wm8770_regmap);677 if (IS_ERR(wm8770->regmap))678 return PTR_ERR(wm8770->regmap);679 680 spi_set_drvdata(spi, wm8770);681 682 ret = devm_snd_soc_register_component(&spi->dev,683 &soc_component_dev_wm8770, &wm8770_dai, 1);684 685 return ret;686}687 688static struct spi_driver wm8770_spi_driver = {689 .driver = {690 .name = "wm8770",691 .of_match_table = wm8770_of_match,692 },693 .probe = wm8770_spi_probe,694};695 696module_spi_driver(wm8770_spi_driver);697 698MODULE_DESCRIPTION("ASoC WM8770 driver");699MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");700MODULE_LICENSE("GPL");701