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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * wm8776.c -- WM8776 ALSA SoC Audio driver4 *5 * Copyright 2009-12 Wolfson Microelectronics plc6 *7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>8 *9 * TODO: Input ALC/limiter support10 */11 12#include <linux/mod_devicetable.h>13#include <linux/module.h>14#include <linux/moduleparam.h>15#include <linux/init.h>16#include <linux/delay.h>17#include <linux/pm.h>18#include <linux/i2c.h>19#include <linux/regmap.h>20#include <linux/spi/spi.h>21#include <linux/slab.h>22#include <sound/core.h>23#include <sound/pcm.h>24#include <sound/pcm_params.h>25#include <sound/soc.h>26#include <sound/initval.h>27#include <sound/tlv.h>28 29#include "wm8776.h"30 31enum wm8776_chip_type {32 WM8775 = 1,33 WM8776,34};35 36/* codec private data */37struct wm8776_priv {38 struct regmap *regmap;39 int sysclk[2];40};41 42static const struct reg_default wm8776_reg_defaults[] = {43 { 0, 0x79 },44 { 1, 0x79 },45 { 2, 0x79 },46 { 3, 0xff },47 { 4, 0xff },48 { 5, 0xff },49 { 6, 0x00 },50 { 7, 0x90 },51 { 8, 0x00 },52 { 9, 0x00 },53 { 10, 0x22 },54 { 11, 0x22 },55 { 12, 0x22 },56 { 13, 0x08 },57 { 14, 0xcf },58 { 15, 0xcf },59 { 16, 0x7b },60 { 17, 0x00 },61 { 18, 0x32 },62 { 19, 0x00 },63 { 20, 0xa6 },64 { 21, 0x01 },65 { 22, 0x01 },66};67 68static bool wm8776_volatile(struct device *dev, unsigned int reg)69{70 switch (reg) {71 case WM8776_RESET:72 return true;73 default:74 return false;75 }76}77 78static int wm8776_reset(struct snd_soc_component *component)79{80 return snd_soc_component_write(component, WM8776_RESET, 0);81}82 83static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1);84static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);85static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1);86 87static const struct snd_kcontrol_new wm8776_snd_controls[] = {88SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL,89 0, 127, 0, hp_tlv),90SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL,91 0, 255, 0, dac_tlv),92SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0),93 94SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0),95 96SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL,97 0, 255, 0, adc_tlv),98SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1),99SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0),100SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1),101};102 103static const struct snd_kcontrol_new inmix_controls[] = {104SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0),105SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0),106SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0),107SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0),108SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0),109};110 111static const struct snd_kcontrol_new outmix_controls[] = {112SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0),113SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0),114SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0),115};116 117static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = {118SND_SOC_DAPM_INPUT("AUX"),119 120SND_SOC_DAPM_INPUT("AIN1"),121SND_SOC_DAPM_INPUT("AIN2"),122SND_SOC_DAPM_INPUT("AIN3"),123SND_SOC_DAPM_INPUT("AIN4"),124SND_SOC_DAPM_INPUT("AIN5"),125 126SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1,127 inmix_controls, ARRAY_SIZE(inmix_controls)),128 129SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1),130SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1),131 132SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,133 outmix_controls, ARRAY_SIZE(outmix_controls)),134 135SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0),136 137SND_SOC_DAPM_OUTPUT("VOUT"),138 139SND_SOC_DAPM_OUTPUT("HPOUTL"),140SND_SOC_DAPM_OUTPUT("HPOUTR"),141};142 143static const struct snd_soc_dapm_route routes[] = {144 { "Input Mixer", "AIN1 Switch", "AIN1" },145 { "Input Mixer", "AIN2 Switch", "AIN2" },146 { "Input Mixer", "AIN3 Switch", "AIN3" },147 { "Input Mixer", "AIN4 Switch", "AIN4" },148 { "Input Mixer", "AIN5 Switch", "AIN5" },149 150 { "ADC", NULL, "Input Mixer" },151 152 { "Output Mixer", "DAC Switch", "DAC" },153 { "Output Mixer", "AUX Switch", "AUX" },154 { "Output Mixer", "Bypass Switch", "Input Mixer" },155 156 { "VOUT", NULL, "Output Mixer" },157 158 { "Headphone PGA", NULL, "Output Mixer" },159 160 { "HPOUTL", NULL, "Headphone PGA" },161 { "HPOUTR", NULL, "Headphone PGA" },162};163 164static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)165{166 struct snd_soc_component *component = dai->component;167 int reg, iface, master;168 169 switch (dai->driver->id) {170 case WM8776_DAI_DAC:171 reg = WM8776_DACIFCTRL;172 master = 0x80;173 break;174 case WM8776_DAI_ADC:175 reg = WM8776_ADCIFCTRL;176 master = 0x100;177 break;178 default:179 return -EINVAL;180 }181 182 iface = 0;183 184 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {185 case SND_SOC_DAIFMT_CBM_CFM:186 break;187 case SND_SOC_DAIFMT_CBS_CFS:188 master = 0;189 break;190 default:191 return -EINVAL;192 }193 194 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {195 case SND_SOC_DAIFMT_I2S:196 iface |= 0x0002;197 break;198 case SND_SOC_DAIFMT_RIGHT_J:199 break;200 case SND_SOC_DAIFMT_LEFT_J:201 iface |= 0x0001;202 break;203 default:204 return -EINVAL;205 }206 207 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {208 case SND_SOC_DAIFMT_NB_NF:209 break;210 case SND_SOC_DAIFMT_IB_IF:211 iface |= 0x00c;212 break;213 case SND_SOC_DAIFMT_IB_NF:214 iface |= 0x008;215 break;216 case SND_SOC_DAIFMT_NB_IF:217 iface |= 0x004;218 break;219 default:220 return -EINVAL;221 }222 223 /* Finally, write out the values */224 snd_soc_component_update_bits(component, reg, 0xf, iface);225 snd_soc_component_update_bits(component, WM8776_MSTRCTRL, 0x180, master);226 227 return 0;228}229 230static int mclk_ratios[] = {231 128,232 192,233 256,234 384,235 512,236 768,237};238 239static int wm8776_hw_params(struct snd_pcm_substream *substream,240 struct snd_pcm_hw_params *params,241 struct snd_soc_dai *dai)242{243 struct snd_soc_component *component = dai->component;244 struct wm8776_priv *wm8776 = snd_soc_component_get_drvdata(component);245 int iface_reg, iface;246 int ratio_shift, master;247 int i;248 249 switch (dai->driver->id) {250 case WM8776_DAI_DAC:251 iface_reg = WM8776_DACIFCTRL;252 master = 0x80;253 ratio_shift = 4;254 break;255 case WM8776_DAI_ADC:256 iface_reg = WM8776_ADCIFCTRL;257 master = 0x100;258 ratio_shift = 0;259 break;260 default:261 return -EINVAL;262 }263 264 /* Set word length */265 switch (params_width(params)) {266 case 16:267 iface = 0;268 break;269 case 20:270 iface = 0x10;271 break;272 case 24:273 iface = 0x20;274 break;275 case 32:276 iface = 0x30;277 break;278 default:279 dev_err(component->dev, "Unsupported sample size: %i\n",280 params_width(params));281 return -EINVAL;282 }283 284 /* Only need to set MCLK/LRCLK ratio if we're master */285 if (snd_soc_component_read(component, WM8776_MSTRCTRL) & master) {286 for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) {287 if (wm8776->sysclk[dai->driver->id] / params_rate(params)288 == mclk_ratios[i])289 break;290 }291 292 if (i == ARRAY_SIZE(mclk_ratios)) {293 dev_err(component->dev,294 "Unable to configure MCLK ratio %d/%d\n",295 wm8776->sysclk[dai->driver->id], params_rate(params));296 return -EINVAL;297 }298 299 dev_dbg(component->dev, "MCLK is %dfs\n", mclk_ratios[i]);300 301 snd_soc_component_update_bits(component, WM8776_MSTRCTRL,302 0x7 << ratio_shift, i << ratio_shift);303 } else {304 dev_dbg(component->dev, "DAI in slave mode\n");305 }306 307 snd_soc_component_update_bits(component, iface_reg, 0x30, iface);308 309 return 0;310}311 312static int wm8776_mute(struct snd_soc_dai *dai, int mute, int direction)313{314 struct snd_soc_component *component = dai->component;315 316 return snd_soc_component_write(component, WM8776_DACMUTE, !!mute);317}318 319static int wm8776_set_sysclk(struct snd_soc_dai *dai,320 int clk_id, unsigned int freq, int dir)321{322 struct snd_soc_component *component = dai->component;323 struct wm8776_priv *wm8776 = snd_soc_component_get_drvdata(component);324 325 if (WARN_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk)))326 return -EINVAL;327 328 wm8776->sysclk[dai->driver->id] = freq;329 330 return 0;331}332 333static int wm8776_set_bias_level(struct snd_soc_component *component,334 enum snd_soc_bias_level level)335{336 struct wm8776_priv *wm8776 = snd_soc_component_get_drvdata(component);337 338 switch (level) {339 case SND_SOC_BIAS_ON:340 break;341 case SND_SOC_BIAS_PREPARE:342 break;343 case SND_SOC_BIAS_STANDBY:344 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {345 regcache_sync(wm8776->regmap);346 347 /* Disable the global powerdown; DAPM does the rest */348 snd_soc_component_update_bits(component, WM8776_PWRDOWN, 1, 0);349 }350 351 break;352 case SND_SOC_BIAS_OFF:353 snd_soc_component_update_bits(component, WM8776_PWRDOWN, 1, 1);354 break;355 }356 357 return 0;358}359 360#define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\361 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)362 363static const struct snd_soc_dai_ops wm8776_dac_ops = {364 .mute_stream = wm8776_mute,365 .hw_params = wm8776_hw_params,366 .set_fmt = wm8776_set_fmt,367 .set_sysclk = wm8776_set_sysclk,368 .no_capture_mute = 1,369};370 371static const struct snd_soc_dai_ops wm8776_adc_ops = {372 .hw_params = wm8776_hw_params,373 .set_fmt = wm8776_set_fmt,374 .set_sysclk = wm8776_set_sysclk,375};376 377static struct snd_soc_dai_driver wm8776_dai[] = {378 {379 .name = "wm8776-hifi-playback",380 .id = WM8776_DAI_DAC,381 .playback = {382 .stream_name = "Playback",383 .channels_min = 2,384 .channels_max = 2,385 .rates = SNDRV_PCM_RATE_CONTINUOUS,386 .rate_min = 32000,387 .rate_max = 192000,388 .formats = WM8776_FORMATS,389 },390 .ops = &wm8776_dac_ops,391 },392 {393 .name = "wm8776-hifi-capture",394 .id = WM8776_DAI_ADC,395 .capture = {396 .stream_name = "Capture",397 .channels_min = 2,398 .channels_max = 2,399 .rates = SNDRV_PCM_RATE_CONTINUOUS,400 .rate_min = 32000,401 .rate_max = 96000,402 .formats = WM8776_FORMATS,403 },404 .ops = &wm8776_adc_ops,405 },406};407 408static int wm8776_probe(struct snd_soc_component *component)409{410 int ret = 0;411 412 ret = wm8776_reset(component);413 if (ret < 0) {414 dev_err(component->dev, "Failed to issue reset: %d\n", ret);415 return ret;416 }417 418 /* Latch the update bits; right channel only since we always419 * update both. */420 snd_soc_component_update_bits(component, WM8776_HPRVOL, 0x100, 0x100);421 snd_soc_component_update_bits(component, WM8776_DACRVOL, 0x100, 0x100);422 423 return ret;424}425 426static const struct snd_soc_component_driver soc_component_dev_wm8776 = {427 .probe = wm8776_probe,428 .set_bias_level = wm8776_set_bias_level,429 .controls = wm8776_snd_controls,430 .num_controls = ARRAY_SIZE(wm8776_snd_controls),431 .dapm_widgets = wm8776_dapm_widgets,432 .num_dapm_widgets = ARRAY_SIZE(wm8776_dapm_widgets),433 .dapm_routes = routes,434 .num_dapm_routes = ARRAY_SIZE(routes),435 .suspend_bias_off = 1,436 .idle_bias_on = 1,437 .use_pmdown_time = 1,438 .endianness = 1,439};440 441static const struct of_device_id wm8776_of_match[] = {442 { .compatible = "wlf,wm8776", },443 { }444};445MODULE_DEVICE_TABLE(of, wm8776_of_match);446 447static const struct regmap_config wm8776_regmap = {448 .reg_bits = 7,449 .val_bits = 9,450 .max_register = WM8776_RESET,451 452 .reg_defaults = wm8776_reg_defaults,453 .num_reg_defaults = ARRAY_SIZE(wm8776_reg_defaults),454 .cache_type = REGCACHE_MAPLE,455 456 .volatile_reg = wm8776_volatile,457};458 459#if defined(CONFIG_SPI_MASTER)460static int wm8776_spi_probe(struct spi_device *spi)461{462 struct wm8776_priv *wm8776;463 int ret;464 465 wm8776 = devm_kzalloc(&spi->dev, sizeof(struct wm8776_priv),466 GFP_KERNEL);467 if (wm8776 == NULL)468 return -ENOMEM;469 470 wm8776->regmap = devm_regmap_init_spi(spi, &wm8776_regmap);471 if (IS_ERR(wm8776->regmap))472 return PTR_ERR(wm8776->regmap);473 474 spi_set_drvdata(spi, wm8776);475 476 ret = devm_snd_soc_register_component(&spi->dev,477 &soc_component_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));478 479 return ret;480}481 482static struct spi_driver wm8776_spi_driver = {483 .driver = {484 .name = "wm8776",485 .of_match_table = wm8776_of_match,486 },487 .probe = wm8776_spi_probe,488};489#endif /* CONFIG_SPI_MASTER */490 491#if IS_ENABLED(CONFIG_I2C)492static int wm8776_i2c_probe(struct i2c_client *i2c)493{494 struct wm8776_priv *wm8776;495 int ret;496 497 wm8776 = devm_kzalloc(&i2c->dev, sizeof(struct wm8776_priv),498 GFP_KERNEL);499 if (wm8776 == NULL)500 return -ENOMEM;501 502 wm8776->regmap = devm_regmap_init_i2c(i2c, &wm8776_regmap);503 if (IS_ERR(wm8776->regmap))504 return PTR_ERR(wm8776->regmap);505 506 i2c_set_clientdata(i2c, wm8776);507 508 ret = devm_snd_soc_register_component(&i2c->dev,509 &soc_component_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));510 511 return ret;512}513 514static const struct i2c_device_id wm8776_i2c_id[] = {515 { "wm8775", WM8775 },516 { "wm8776", WM8776 },517 { }518};519MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id);520 521static struct i2c_driver wm8776_i2c_driver = {522 .driver = {523 .name = "wm8776",524 .of_match_table = wm8776_of_match,525 },526 .probe = wm8776_i2c_probe,527 .id_table = wm8776_i2c_id,528};529#endif530 531static int __init wm8776_modinit(void)532{533 int ret = 0;534#if IS_ENABLED(CONFIG_I2C)535 ret = i2c_add_driver(&wm8776_i2c_driver);536 if (ret != 0) {537 printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n",538 ret);539 }540#endif541#if defined(CONFIG_SPI_MASTER)542 ret = spi_register_driver(&wm8776_spi_driver);543 if (ret != 0) {544 printk(KERN_ERR "Failed to register wm8776 SPI driver: %d\n",545 ret);546 }547#endif548 return ret;549}550module_init(wm8776_modinit);551 552static void __exit wm8776_exit(void)553{554#if IS_ENABLED(CONFIG_I2C)555 i2c_del_driver(&wm8776_i2c_driver);556#endif557#if defined(CONFIG_SPI_MASTER)558 spi_unregister_driver(&wm8776_spi_driver);559#endif560}561module_exit(wm8776_exit);562 563MODULE_DESCRIPTION("ASoC WM8776 driver");564MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");565MODULE_LICENSE("GPL");566