721 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * wm8510.c -- WM8510 ALSA Soc Audio driver4 *5 * Copyright 2006 Wolfson Microelectronics PLC.6 *7 * Author: Liam Girdwood <lrg@slimlogic.co.uk>8 */9 10#include <linux/mod_devicetable.h>11#include <linux/module.h>12#include <linux/moduleparam.h>13#include <linux/kernel.h>14#include <linux/init.h>15#include <linux/delay.h>16#include <linux/pm.h>17#include <linux/i2c.h>18#include <linux/spi/spi.h>19#include <linux/slab.h>20#include <linux/regmap.h>21#include <sound/core.h>22#include <sound/pcm.h>23#include <sound/pcm_params.h>24#include <sound/soc.h>25#include <sound/initval.h>26 27#include "wm8510.h"28 29/*30 * wm8510 register cache31 * We can't read the WM8510 register space when we are32 * using 2 wire for device control, so we cache them instead.33 */34static const struct reg_default wm8510_reg_defaults[] = {35 { 1, 0x0000 },36 { 2, 0x0000 },37 { 3, 0x0000 },38 { 4, 0x0050 },39 { 5, 0x0000 },40 { 6, 0x0140 },41 { 7, 0x0000 },42 { 8, 0x0000 },43 { 9, 0x0000 },44 { 10, 0x0000 },45 { 11, 0x00ff },46 { 12, 0x0000 },47 { 13, 0x0000 },48 { 14, 0x0100 },49 { 15, 0x00ff },50 { 16, 0x0000 },51 { 17, 0x0000 },52 { 18, 0x012c },53 { 19, 0x002c },54 { 20, 0x002c },55 { 21, 0x002c },56 { 22, 0x002c },57 { 23, 0x0000 },58 { 24, 0x0032 },59 { 25, 0x0000 },60 { 26, 0x0000 },61 { 27, 0x0000 },62 { 28, 0x0000 },63 { 29, 0x0000 },64 { 30, 0x0000 },65 { 31, 0x0000 },66 { 32, 0x0038 },67 { 33, 0x000b },68 { 34, 0x0032 },69 { 35, 0x0000 },70 { 36, 0x0008 },71 { 37, 0x000c },72 { 38, 0x0093 },73 { 39, 0x00e9 },74 { 40, 0x0000 },75 { 41, 0x0000 },76 { 42, 0x0000 },77 { 43, 0x0000 },78 { 44, 0x0003 },79 { 45, 0x0010 },80 { 46, 0x0000 },81 { 47, 0x0000 },82 { 48, 0x0000 },83 { 49, 0x0002 },84 { 50, 0x0001 },85 { 51, 0x0000 },86 { 52, 0x0000 },87 { 53, 0x0000 },88 { 54, 0x0039 },89 { 55, 0x0000 },90 { 56, 0x0001 },91};92 93static bool wm8510_volatile(struct device *dev, unsigned int reg)94{95 switch (reg) {96 case WM8510_RESET:97 return true;98 default:99 return false;100 }101}102 103#define WM8510_POWER1_BIASEN 0x08104#define WM8510_POWER1_BUFIOEN 0x10105 106#define wm8510_reset(c) snd_soc_component_write(c, WM8510_RESET, 0)107 108/* codec private data */109struct wm8510_priv {110 struct regmap *regmap;111};112 113static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };114static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };115static const char *wm8510_alc[] = { "ALC", "Limiter" };116 117static const struct soc_enum wm8510_enum[] = {118 SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */119 SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */120 SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp),121 SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc),122};123 124static const struct snd_kcontrol_new wm8510_snd_controls[] = {125 126SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),127 128SOC_ENUM("DAC Companding", wm8510_enum[1]),129SOC_ENUM("ADC Companding", wm8510_enum[0]),130 131SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),132SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),133 134SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),135 136SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),137SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),138SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),139 140SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0),141 142SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0),143SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0),144SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0),145 146SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0),147SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0),148 149SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0),150SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0),151SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0),152 153SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0),154SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0),155SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0),156 157SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),158SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0),159SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0),160 161SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0),162SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0),163 164SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0),165SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0),166 167SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0),168SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1),169SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0),170SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),171 172SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0),173SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),174};175 176/* Speaker Output Mixer */177static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {178SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),179SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),180SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),181};182 183/* Mono Output Mixer */184static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {185SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),186SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),187SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),188};189 190static const struct snd_kcontrol_new wm8510_boost_controls[] = {191SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1),192SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),193SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),194};195 196static const struct snd_kcontrol_new wm8510_micpga_controls[] = {197SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),198SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),199SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),200};201 202static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {203SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,204 &wm8510_speaker_mixer_controls[0],205 ARRAY_SIZE(wm8510_speaker_mixer_controls)),206SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,207 &wm8510_mono_mixer_controls[0],208 ARRAY_SIZE(wm8510_mono_mixer_controls)),209SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),210SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),211SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),212SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),213SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),214SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),215 216SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0,217 &wm8510_micpga_controls[0],218 ARRAY_SIZE(wm8510_micpga_controls)),219SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,220 &wm8510_boost_controls[0],221 ARRAY_SIZE(wm8510_boost_controls)),222 223SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),224 225SND_SOC_DAPM_INPUT("MICN"),226SND_SOC_DAPM_INPUT("MICP"),227SND_SOC_DAPM_INPUT("AUX"),228SND_SOC_DAPM_OUTPUT("MONOOUT"),229SND_SOC_DAPM_OUTPUT("SPKOUTP"),230SND_SOC_DAPM_OUTPUT("SPKOUTN"),231};232 233static const struct snd_soc_dapm_route wm8510_dapm_routes[] = {234 /* Mono output mixer */235 {"Mono Mixer", "PCM Playback Switch", "DAC"},236 {"Mono Mixer", "Aux Playback Switch", "Aux Input"},237 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},238 239 /* Speaker output mixer */240 {"Speaker Mixer", "PCM Playback Switch", "DAC"},241 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},242 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},243 244 /* Outputs */245 {"Mono Out", NULL, "Mono Mixer"},246 {"MONOOUT", NULL, "Mono Out"},247 {"SpkN Out", NULL, "Speaker Mixer"},248 {"SpkP Out", NULL, "Speaker Mixer"},249 {"SPKOUTN", NULL, "SpkN Out"},250 {"SPKOUTP", NULL, "SpkP Out"},251 252 /* Microphone PGA */253 {"Mic PGA", "MICN Switch", "MICN"},254 {"Mic PGA", "MICP Switch", "MICP"},255 { "Mic PGA", "AUX Switch", "Aux Input" },256 257 /* Boost Mixer */258 {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},259 {"Boost Mixer", "Mic Volume", "MICP"},260 {"Boost Mixer", "Aux Volume", "Aux Input"},261 262 {"ADC", NULL, "Boost Mixer"},263};264 265struct pll_ {266 unsigned int pre_div:4; /* prescale - 1 */267 unsigned int n:4;268 unsigned int k;269};270 271static struct pll_ pll_div;272 273/* The size in bits of the pll divide multiplied by 10274 * to allow rounding later */275#define FIXED_PLL_SIZE ((1 << 24) * 10)276 277static void pll_factors(unsigned int target, unsigned int source)278{279 unsigned long long Kpart;280 unsigned int K, Ndiv, Nmod;281 282 Ndiv = target / source;283 if (Ndiv < 6) {284 source >>= 1;285 pll_div.pre_div = 1;286 Ndiv = target / source;287 } else288 pll_div.pre_div = 0;289 290 if ((Ndiv < 6) || (Ndiv > 12))291 printk(KERN_WARNING292 "WM8510 N value %u outwith recommended range!d\n",293 Ndiv);294 295 pll_div.n = Ndiv;296 Nmod = target % source;297 Kpart = FIXED_PLL_SIZE * (long long)Nmod;298 299 do_div(Kpart, source);300 301 K = Kpart & 0xFFFFFFFF;302 303 /* Check if we need to round */304 if ((K % 10) >= 5)305 K += 5;306 307 /* Move down to proper range now rounding is done */308 K /= 10;309 310 pll_div.k = K;311}312 313static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,314 int source, unsigned int freq_in, unsigned int freq_out)315{316 struct snd_soc_component *component = codec_dai->component;317 u16 reg;318 319 if (freq_in == 0 || freq_out == 0) {320 /* Clock CODEC directly from MCLK */321 reg = snd_soc_component_read(component, WM8510_CLOCK);322 snd_soc_component_write(component, WM8510_CLOCK, reg & 0x0ff);323 324 /* Turn off PLL */325 reg = snd_soc_component_read(component, WM8510_POWER1);326 snd_soc_component_write(component, WM8510_POWER1, reg & 0x1df);327 return 0;328 }329 330 pll_factors(freq_out*4, freq_in);331 332 snd_soc_component_write(component, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);333 snd_soc_component_write(component, WM8510_PLLK1, pll_div.k >> 18);334 snd_soc_component_write(component, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);335 snd_soc_component_write(component, WM8510_PLLK3, pll_div.k & 0x1ff);336 reg = snd_soc_component_read(component, WM8510_POWER1);337 snd_soc_component_write(component, WM8510_POWER1, reg | 0x020);338 339 /* Run CODEC from PLL instead of MCLK */340 reg = snd_soc_component_read(component, WM8510_CLOCK);341 snd_soc_component_write(component, WM8510_CLOCK, reg | 0x100);342 343 return 0;344}345 346/*347 * Configure WM8510 clock dividers.348 */349static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai,350 int div_id, int div)351{352 struct snd_soc_component *component = codec_dai->component;353 u16 reg;354 355 switch (div_id) {356 case WM8510_OPCLKDIV:357 reg = snd_soc_component_read(component, WM8510_GPIO) & 0x1cf;358 snd_soc_component_write(component, WM8510_GPIO, reg | div);359 break;360 case WM8510_MCLKDIV:361 reg = snd_soc_component_read(component, WM8510_CLOCK) & 0x11f;362 snd_soc_component_write(component, WM8510_CLOCK, reg | div);363 break;364 case WM8510_ADCCLK:365 reg = snd_soc_component_read(component, WM8510_ADC) & 0x1f7;366 snd_soc_component_write(component, WM8510_ADC, reg | div);367 break;368 case WM8510_DACCLK:369 reg = snd_soc_component_read(component, WM8510_DAC) & 0x1f7;370 snd_soc_component_write(component, WM8510_DAC, reg | div);371 break;372 case WM8510_BCLKDIV:373 reg = snd_soc_component_read(component, WM8510_CLOCK) & 0x1e3;374 snd_soc_component_write(component, WM8510_CLOCK, reg | div);375 break;376 default:377 return -EINVAL;378 }379 380 return 0;381}382 383static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai,384 unsigned int fmt)385{386 struct snd_soc_component *component = codec_dai->component;387 u16 iface = 0;388 u16 clk = snd_soc_component_read(component, WM8510_CLOCK) & 0x1fe;389 390 /* set master/slave audio interface */391 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {392 case SND_SOC_DAIFMT_CBM_CFM:393 clk |= 0x0001;394 break;395 case SND_SOC_DAIFMT_CBS_CFS:396 break;397 default:398 return -EINVAL;399 }400 401 /* interface format */402 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {403 case SND_SOC_DAIFMT_I2S:404 iface |= 0x0010;405 break;406 case SND_SOC_DAIFMT_RIGHT_J:407 break;408 case SND_SOC_DAIFMT_LEFT_J:409 iface |= 0x0008;410 break;411 case SND_SOC_DAIFMT_DSP_A:412 iface |= 0x00018;413 break;414 default:415 return -EINVAL;416 }417 418 /* clock inversion */419 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {420 case SND_SOC_DAIFMT_NB_NF:421 break;422 case SND_SOC_DAIFMT_IB_IF:423 iface |= 0x0180;424 break;425 case SND_SOC_DAIFMT_IB_NF:426 iface |= 0x0100;427 break;428 case SND_SOC_DAIFMT_NB_IF:429 iface |= 0x0080;430 break;431 default:432 return -EINVAL;433 }434 435 snd_soc_component_write(component, WM8510_IFACE, iface);436 snd_soc_component_write(component, WM8510_CLOCK, clk);437 return 0;438}439 440static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream,441 struct snd_pcm_hw_params *params,442 struct snd_soc_dai *dai)443{444 struct snd_soc_component *component = dai->component;445 u16 iface = snd_soc_component_read(component, WM8510_IFACE) & 0x19f;446 u16 adn = snd_soc_component_read(component, WM8510_ADD) & 0x1f1;447 448 /* bit size */449 switch (params_width(params)) {450 case 16:451 break;452 case 20:453 iface |= 0x0020;454 break;455 case 24:456 iface |= 0x0040;457 break;458 case 32:459 iface |= 0x0060;460 break;461 }462 463 /* filter coefficient */464 switch (params_rate(params)) {465 case 8000:466 adn |= 0x5 << 1;467 break;468 case 11025:469 adn |= 0x4 << 1;470 break;471 case 16000:472 adn |= 0x3 << 1;473 break;474 case 22050:475 adn |= 0x2 << 1;476 break;477 case 32000:478 adn |= 0x1 << 1;479 break;480 case 44100:481 case 48000:482 break;483 }484 485 snd_soc_component_write(component, WM8510_IFACE, iface);486 snd_soc_component_write(component, WM8510_ADD, adn);487 return 0;488}489 490static int wm8510_mute(struct snd_soc_dai *dai, int mute, int direction)491{492 struct snd_soc_component *component = dai->component;493 u16 mute_reg = snd_soc_component_read(component, WM8510_DAC) & 0xffbf;494 495 if (mute)496 snd_soc_component_write(component, WM8510_DAC, mute_reg | 0x40);497 else498 snd_soc_component_write(component, WM8510_DAC, mute_reg);499 return 0;500}501 502/* liam need to make this lower power with dapm */503static int wm8510_set_bias_level(struct snd_soc_component *component,504 enum snd_soc_bias_level level)505{506 struct wm8510_priv *wm8510 = snd_soc_component_get_drvdata(component);507 u16 power1 = snd_soc_component_read(component, WM8510_POWER1) & ~0x3;508 509 switch (level) {510 case SND_SOC_BIAS_ON:511 case SND_SOC_BIAS_PREPARE:512 power1 |= 0x1; /* VMID 50k */513 snd_soc_component_write(component, WM8510_POWER1, power1);514 break;515 516 case SND_SOC_BIAS_STANDBY:517 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN;518 519 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {520 regcache_sync(wm8510->regmap);521 522 /* Initial cap charge at VMID 5k */523 snd_soc_component_write(component, WM8510_POWER1, power1 | 0x3);524 mdelay(100);525 }526 527 power1 |= 0x2; /* VMID 500k */528 snd_soc_component_write(component, WM8510_POWER1, power1);529 break;530 531 case SND_SOC_BIAS_OFF:532 snd_soc_component_write(component, WM8510_POWER1, 0);533 snd_soc_component_write(component, WM8510_POWER2, 0);534 snd_soc_component_write(component, WM8510_POWER3, 0);535 break;536 }537 538 return 0;539}540 541#define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\542 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\543 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)544 545#define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\546 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)547 548static const struct snd_soc_dai_ops wm8510_dai_ops = {549 .hw_params = wm8510_pcm_hw_params,550 .mute_stream = wm8510_mute,551 .set_fmt = wm8510_set_dai_fmt,552 .set_clkdiv = wm8510_set_dai_clkdiv,553 .set_pll = wm8510_set_dai_pll,554 .no_capture_mute = 1,555};556 557static struct snd_soc_dai_driver wm8510_dai = {558 .name = "wm8510-hifi",559 .playback = {560 .stream_name = "Playback",561 .channels_min = 2,562 .channels_max = 2,563 .rates = WM8510_RATES,564 .formats = WM8510_FORMATS,},565 .capture = {566 .stream_name = "Capture",567 .channels_min = 2,568 .channels_max = 2,569 .rates = WM8510_RATES,570 .formats = WM8510_FORMATS,},571 .ops = &wm8510_dai_ops,572 .symmetric_rate = 1,573};574 575static int wm8510_probe(struct snd_soc_component *component)576{577 wm8510_reset(component);578 579 return 0;580}581 582static const struct snd_soc_component_driver soc_component_dev_wm8510 = {583 .probe = wm8510_probe,584 .set_bias_level = wm8510_set_bias_level,585 .controls = wm8510_snd_controls,586 .num_controls = ARRAY_SIZE(wm8510_snd_controls),587 .dapm_widgets = wm8510_dapm_widgets,588 .num_dapm_widgets = ARRAY_SIZE(wm8510_dapm_widgets),589 .dapm_routes = wm8510_dapm_routes,590 .num_dapm_routes = ARRAY_SIZE(wm8510_dapm_routes),591 .suspend_bias_off = 1,592 .idle_bias_on = 1,593 .use_pmdown_time = 1,594 .endianness = 1,595};596 597static const struct of_device_id wm8510_of_match[] = {598 { .compatible = "wlf,wm8510" },599 { },600};601MODULE_DEVICE_TABLE(of, wm8510_of_match);602 603static const struct regmap_config wm8510_regmap = {604 .reg_bits = 7,605 .val_bits = 9,606 .max_register = WM8510_MONOMIX,607 608 .reg_defaults = wm8510_reg_defaults,609 .num_reg_defaults = ARRAY_SIZE(wm8510_reg_defaults),610 .cache_type = REGCACHE_MAPLE,611 612 .volatile_reg = wm8510_volatile,613};614 615#if defined(CONFIG_SPI_MASTER)616static int wm8510_spi_probe(struct spi_device *spi)617{618 struct wm8510_priv *wm8510;619 int ret;620 621 wm8510 = devm_kzalloc(&spi->dev, sizeof(struct wm8510_priv),622 GFP_KERNEL);623 if (wm8510 == NULL)624 return -ENOMEM;625 626 wm8510->regmap = devm_regmap_init_spi(spi, &wm8510_regmap);627 if (IS_ERR(wm8510->regmap))628 return PTR_ERR(wm8510->regmap);629 630 spi_set_drvdata(spi, wm8510);631 632 ret = devm_snd_soc_register_component(&spi->dev,633 &soc_component_dev_wm8510, &wm8510_dai, 1);634 635 return ret;636}637 638static struct spi_driver wm8510_spi_driver = {639 .driver = {640 .name = "wm8510",641 .of_match_table = wm8510_of_match,642 },643 .probe = wm8510_spi_probe,644};645#endif /* CONFIG_SPI_MASTER */646 647#if IS_ENABLED(CONFIG_I2C)648static int wm8510_i2c_probe(struct i2c_client *i2c)649{650 struct wm8510_priv *wm8510;651 int ret;652 653 wm8510 = devm_kzalloc(&i2c->dev, sizeof(struct wm8510_priv),654 GFP_KERNEL);655 if (wm8510 == NULL)656 return -ENOMEM;657 658 wm8510->regmap = devm_regmap_init_i2c(i2c, &wm8510_regmap);659 if (IS_ERR(wm8510->regmap))660 return PTR_ERR(wm8510->regmap);661 662 i2c_set_clientdata(i2c, wm8510);663 664 ret = devm_snd_soc_register_component(&i2c->dev,665 &soc_component_dev_wm8510, &wm8510_dai, 1);666 667 return ret;668}669 670static const struct i2c_device_id wm8510_i2c_id[] = {671 { "wm8510" },672 { }673};674MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id);675 676static struct i2c_driver wm8510_i2c_driver = {677 .driver = {678 .name = "wm8510",679 .of_match_table = wm8510_of_match,680 },681 .probe = wm8510_i2c_probe,682 .id_table = wm8510_i2c_id,683};684#endif685 686static int __init wm8510_modinit(void)687{688 int ret = 0;689#if IS_ENABLED(CONFIG_I2C)690 ret = i2c_add_driver(&wm8510_i2c_driver);691 if (ret != 0) {692 printk(KERN_ERR "Failed to register WM8510 I2C driver: %d\n",693 ret);694 }695#endif696#if defined(CONFIG_SPI_MASTER)697 ret = spi_register_driver(&wm8510_spi_driver);698 if (ret != 0) {699 printk(KERN_ERR "Failed to register WM8510 SPI driver: %d\n",700 ret);701 }702#endif703 return ret;704}705module_init(wm8510_modinit);706 707static void __exit wm8510_exit(void)708{709#if IS_ENABLED(CONFIG_I2C)710 i2c_del_driver(&wm8510_i2c_driver);711#endif712#if defined(CONFIG_SPI_MASTER)713 spi_unregister_driver(&wm8510_spi_driver);714#endif715}716module_exit(wm8510_exit);717 718MODULE_DESCRIPTION("ASoC WM8510 driver");719MODULE_AUTHOR("Liam Girdwood");720MODULE_LICENSE("GPL");721