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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * max98371.c -- ALSA SoC Stereo MAX98371 driver4 *5 * Copyright 2015-16 Maxim Integrated Products6 */7 8#include <linux/i2c.h>9#include <linux/module.h>10#include <linux/regmap.h>11#include <linux/slab.h>12#include <sound/pcm.h>13#include <sound/pcm_params.h>14#include <sound/soc.h>15#include <sound/tlv.h>16#include "max98371.h"17 18static const char *const monomix_text[] = {19 "Left", "Right", "LeftRightDiv2",20};21 22static const char *const hpf_cutoff_txt[] = {23 "Disable", "DC Block", "50Hz",24 "100Hz", "200Hz", "400Hz", "800Hz",25};26 27static SOC_ENUM_SINGLE_DECL(max98371_monomix, MAX98371_MONOMIX_CFG, 0,28 monomix_text);29 30static SOC_ENUM_SINGLE_DECL(max98371_hpf_cutoff, MAX98371_HPF, 0,31 hpf_cutoff_txt);32 33static const DECLARE_TLV_DB_RANGE(max98371_dht_min_gain,34 0, 1, TLV_DB_SCALE_ITEM(537, 66, 0),35 2, 3, TLV_DB_SCALE_ITEM(677, 82, 0),36 4, 5, TLV_DB_SCALE_ITEM(852, 104, 0),37 6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0),38 8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0),39 10, 11, TLV_DB_SCALE_ITEM(1699, 101, 0),40);41 42static const DECLARE_TLV_DB_RANGE(max98371_dht_max_gain,43 0, 1, TLV_DB_SCALE_ITEM(537, 66, 0),44 2, 3, TLV_DB_SCALE_ITEM(677, 82, 0),45 4, 5, TLV_DB_SCALE_ITEM(852, 104, 0),46 6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0),47 8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0),48 10, 11, TLV_DB_SCALE_ITEM(1699, 208, 0),49);50 51static const DECLARE_TLV_DB_RANGE(max98371_dht_rot_gain,52 0, 1, TLV_DB_SCALE_ITEM(-50, -50, 0),53 2, 6, TLV_DB_SCALE_ITEM(-100, -100, 0),54 7, 8, TLV_DB_SCALE_ITEM(-800, -200, 0),55 9, 11, TLV_DB_SCALE_ITEM(-1200, -300, 0),56 12, 13, TLV_DB_SCALE_ITEM(-2000, -200, 0),57 14, 15, TLV_DB_SCALE_ITEM(-2500, -500, 0),58);59 60static const struct reg_default max98371_reg[] = {61 { 0x01, 0x00 },62 { 0x02, 0x00 },63 { 0x03, 0x00 },64 { 0x04, 0x00 },65 { 0x05, 0x00 },66 { 0x06, 0x00 },67 { 0x07, 0x00 },68 { 0x08, 0x00 },69 { 0x09, 0x00 },70 { 0x0A, 0x00 },71 { 0x10, 0x06 },72 { 0x11, 0x08 },73 { 0x14, 0x80 },74 { 0x15, 0x00 },75 { 0x16, 0x00 },76 { 0x18, 0x00 },77 { 0x19, 0x00 },78 { 0x1C, 0x00 },79 { 0x1D, 0x00 },80 { 0x1E, 0x00 },81 { 0x1F, 0x00 },82 { 0x20, 0x00 },83 { 0x21, 0x00 },84 { 0x22, 0x00 },85 { 0x23, 0x00 },86 { 0x24, 0x00 },87 { 0x25, 0x00 },88 { 0x26, 0x00 },89 { 0x27, 0x00 },90 { 0x28, 0x00 },91 { 0x29, 0x00 },92 { 0x2A, 0x00 },93 { 0x2B, 0x00 },94 { 0x2C, 0x00 },95 { 0x2D, 0x00 },96 { 0x2E, 0x0B },97 { 0x31, 0x00 },98 { 0x32, 0x18 },99 { 0x33, 0x00 },100 { 0x34, 0x00 },101 { 0x36, 0x00 },102 { 0x37, 0x00 },103 { 0x38, 0x00 },104 { 0x39, 0x00 },105 { 0x3A, 0x00 },106 { 0x3B, 0x00 },107 { 0x3C, 0x00 },108 { 0x3D, 0x00 },109 { 0x3E, 0x00 },110 { 0x3F, 0x00 },111 { 0x40, 0x00 },112 { 0x41, 0x00 },113 { 0x42, 0x00 },114 { 0x43, 0x00 },115 { 0x4A, 0x00 },116 { 0x4B, 0x00 },117 { 0x4C, 0x00 },118 { 0x4D, 0x00 },119 { 0x4E, 0x00 },120 { 0x50, 0x00 },121 { 0x51, 0x00 },122 { 0x55, 0x00 },123 { 0x58, 0x00 },124 { 0x59, 0x00 },125 { 0x5C, 0x00 },126 { 0xFF, 0x43 },127};128 129static bool max98371_volatile_register(struct device *dev, unsigned int reg)130{131 switch (reg) {132 case MAX98371_IRQ_CLEAR1:133 case MAX98371_IRQ_CLEAR2:134 case MAX98371_IRQ_CLEAR3:135 case MAX98371_VERSION:136 return true;137 default:138 return false;139 }140}141 142static bool max98371_readable_register(struct device *dev, unsigned int reg)143{144 switch (reg) {145 case MAX98371_SOFT_RESET:146 return false;147 default:148 return true;149 }150};151 152static const DECLARE_TLV_DB_RANGE(max98371_gain_tlv,153 0, 7, TLV_DB_SCALE_ITEM(0, 50, 0),154 8, 10, TLV_DB_SCALE_ITEM(400, 100, 0)155);156 157static const DECLARE_TLV_DB_SCALE(digital_tlv, -6300, 50, 1);158 159static const struct snd_kcontrol_new max98371_snd_controls[] = {160 SOC_SINGLE_TLV("Speaker Volume", MAX98371_GAIN,161 MAX98371_GAIN_SHIFT, (1<<MAX98371_GAIN_WIDTH)-1, 0,162 max98371_gain_tlv),163 SOC_SINGLE_TLV("Digital Volume", MAX98371_DIGITAL_GAIN, 0,164 (1<<MAX98371_DIGITAL_GAIN_WIDTH)-1, 1, digital_tlv),165 SOC_SINGLE_TLV("Speaker DHT Max Volume", MAX98371_GAIN,166 0, (1<<MAX98371_DHT_MAX_WIDTH)-1, 0,167 max98371_dht_max_gain),168 SOC_SINGLE_TLV("Speaker DHT Min Volume", MAX98371_DHT_GAIN,169 0, (1<<MAX98371_DHT_GAIN_WIDTH)-1, 0,170 max98371_dht_min_gain),171 SOC_SINGLE_TLV("Speaker DHT Rotation Volume", MAX98371_DHT_GAIN,172 0, (1<<MAX98371_DHT_ROT_WIDTH)-1, 0,173 max98371_dht_rot_gain),174 SOC_SINGLE("DHT Attack Step", MAX98371_DHT, MAX98371_DHT_STEP, 3, 0),175 SOC_SINGLE("DHT Attack Rate", MAX98371_DHT, 0, 7, 0),176 SOC_ENUM("Monomix Select", max98371_monomix),177 SOC_ENUM("HPF Cutoff", max98371_hpf_cutoff),178};179 180static int max98371_dai_set_fmt(struct snd_soc_dai *codec_dai,181 unsigned int fmt)182{183 struct snd_soc_component *component = codec_dai->component;184 struct max98371_priv *max98371 = snd_soc_component_get_drvdata(component);185 unsigned int val = 0;186 187 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {188 case SND_SOC_DAIFMT_CBC_CFC:189 break;190 default:191 dev_err(component->dev, "DAI clock mode unsupported");192 return -EINVAL;193 }194 195 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {196 case SND_SOC_DAIFMT_I2S:197 val |= 0;198 break;199 case SND_SOC_DAIFMT_RIGHT_J:200 val |= MAX98371_DAI_RIGHT;201 break;202 case SND_SOC_DAIFMT_LEFT_J:203 val |= MAX98371_DAI_LEFT;204 break;205 default:206 dev_err(component->dev, "DAI wrong mode unsupported");207 return -EINVAL;208 }209 regmap_update_bits(max98371->regmap, MAX98371_FMT,210 MAX98371_FMT_MODE_MASK, val);211 return 0;212}213 214static int max98371_dai_hw_params(struct snd_pcm_substream *substream,215 struct snd_pcm_hw_params *params,216 struct snd_soc_dai *dai)217{218 struct snd_soc_component *component = dai->component;219 struct max98371_priv *max98371 = snd_soc_component_get_drvdata(component);220 int blr_clk_ratio, ch_size, channels = params_channels(params);221 int rate = params_rate(params);222 223 switch (params_format(params)) {224 case SNDRV_PCM_FORMAT_S8:225 regmap_update_bits(max98371->regmap, MAX98371_FMT,226 MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16);227 ch_size = 8;228 break;229 case SNDRV_PCM_FORMAT_S16_LE:230 regmap_update_bits(max98371->regmap, MAX98371_FMT,231 MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16);232 ch_size = 16;233 break;234 case SNDRV_PCM_FORMAT_S24_LE:235 regmap_update_bits(max98371->regmap, MAX98371_FMT,236 MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32);237 ch_size = 24;238 break;239 case SNDRV_PCM_FORMAT_S32_LE:240 regmap_update_bits(max98371->regmap, MAX98371_FMT,241 MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32);242 ch_size = 32;243 break;244 default:245 return -EINVAL;246 }247 248 /* BCLK/LRCLK ratio calculation */249 blr_clk_ratio = channels * ch_size;250 switch (blr_clk_ratio) {251 case 32:252 regmap_update_bits(max98371->regmap,253 MAX98371_DAI_CLK,254 MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_32);255 break;256 case 48:257 regmap_update_bits(max98371->regmap,258 MAX98371_DAI_CLK,259 MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_48);260 break;261 case 64:262 regmap_update_bits(max98371->regmap,263 MAX98371_DAI_CLK,264 MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_64);265 break;266 default:267 return -EINVAL;268 }269 270 switch (rate) {271 case 32000:272 regmap_update_bits(max98371->regmap,273 MAX98371_SPK_SR,274 MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_32);275 break;276 case 44100:277 regmap_update_bits(max98371->regmap,278 MAX98371_SPK_SR,279 MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_44);280 break;281 case 48000:282 regmap_update_bits(max98371->regmap,283 MAX98371_SPK_SR,284 MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_48);285 break;286 case 88200:287 regmap_update_bits(max98371->regmap,288 MAX98371_SPK_SR,289 MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_88);290 break;291 case 96000:292 regmap_update_bits(max98371->regmap,293 MAX98371_SPK_SR,294 MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_96);295 break;296 default:297 return -EINVAL;298 }299 300 /* enabling both the RX channels*/301 regmap_update_bits(max98371->regmap, MAX98371_MONOMIX_SRC,302 MAX98371_MONOMIX_SRC_MASK, MONOMIX_RX_0_1);303 regmap_update_bits(max98371->regmap, MAX98371_DAI_CHANNEL,304 MAX98371_CHANNEL_MASK, MAX98371_CHANNEL_MASK);305 return 0;306}307 308static const struct snd_soc_dapm_widget max98371_dapm_widgets[] = {309 SND_SOC_DAPM_DAC("DAC", NULL, MAX98371_SPK_ENABLE, 0, 0),310 SND_SOC_DAPM_SUPPLY("Global Enable", MAX98371_GLOBAL_ENABLE,311 0, 0, NULL, 0),312 SND_SOC_DAPM_OUTPUT("SPK_OUT"),313};314 315static const struct snd_soc_dapm_route max98371_audio_map[] = {316 {"DAC", NULL, "HiFi Playback"},317 {"SPK_OUT", NULL, "DAC"},318 {"SPK_OUT", NULL, "Global Enable"},319};320 321#define MAX98371_RATES SNDRV_PCM_RATE_8000_48000322#define MAX98371_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE | \323 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE)324 325static const struct snd_soc_dai_ops max98371_dai_ops = {326 .set_fmt = max98371_dai_set_fmt,327 .hw_params = max98371_dai_hw_params,328};329 330static struct snd_soc_dai_driver max98371_dai[] = {331 {332 .name = "max98371-aif1",333 .playback = {334 .stream_name = "HiFi Playback",335 .channels_min = 1,336 .channels_max = 2,337 .rates = SNDRV_PCM_RATE_8000_48000,338 .formats = MAX98371_FORMATS,339 },340 .ops = &max98371_dai_ops,341 }342};343 344static const struct snd_soc_component_driver max98371_component = {345 .controls = max98371_snd_controls,346 .num_controls = ARRAY_SIZE(max98371_snd_controls),347 .dapm_routes = max98371_audio_map,348 .num_dapm_routes = ARRAY_SIZE(max98371_audio_map),349 .dapm_widgets = max98371_dapm_widgets,350 .num_dapm_widgets = ARRAY_SIZE(max98371_dapm_widgets),351 .idle_bias_on = 1,352 .use_pmdown_time = 1,353 .endianness = 1,354};355 356static const struct regmap_config max98371_regmap = {357 .reg_bits = 8,358 .val_bits = 8,359 .max_register = MAX98371_VERSION,360 .reg_defaults = max98371_reg,361 .num_reg_defaults = ARRAY_SIZE(max98371_reg),362 .volatile_reg = max98371_volatile_register,363 .readable_reg = max98371_readable_register,364 .cache_type = REGCACHE_RBTREE,365};366 367static int max98371_i2c_probe(struct i2c_client *i2c)368{369 struct max98371_priv *max98371;370 int ret, reg;371 372 max98371 = devm_kzalloc(&i2c->dev,373 sizeof(*max98371), GFP_KERNEL);374 if (!max98371)375 return -ENOMEM;376 377 i2c_set_clientdata(i2c, max98371);378 max98371->regmap = devm_regmap_init_i2c(i2c, &max98371_regmap);379 if (IS_ERR(max98371->regmap)) {380 ret = PTR_ERR(max98371->regmap);381 dev_err(&i2c->dev,382 "Failed to allocate regmap: %d\n", ret);383 return ret;384 }385 386 ret = regmap_read(max98371->regmap, MAX98371_VERSION, ®);387 if (ret < 0) {388 dev_info(&i2c->dev, "device error %d\n", ret);389 return ret;390 }391 dev_info(&i2c->dev, "device version %x\n", reg);392 393 ret = devm_snd_soc_register_component(&i2c->dev, &max98371_component,394 max98371_dai, ARRAY_SIZE(max98371_dai));395 if (ret < 0) {396 dev_err(&i2c->dev, "Failed to register component: %d\n", ret);397 return ret;398 }399 return ret;400}401 402static const struct i2c_device_id max98371_i2c_id[] = {403 { "max98371" },404 { }405};406 407MODULE_DEVICE_TABLE(i2c, max98371_i2c_id);408 409#ifdef CONFIG_OF410static const struct of_device_id max98371_of_match[] = {411 { .compatible = "maxim,max98371", },412 { }413};414MODULE_DEVICE_TABLE(of, max98371_of_match);415#endif416 417static struct i2c_driver max98371_i2c_driver = {418 .driver = {419 .name = "max98371",420 .of_match_table = of_match_ptr(max98371_of_match),421 },422 .probe = max98371_i2c_probe,423 .id_table = max98371_i2c_id,424};425 426module_i2c_driver(max98371_i2c_driver);427 428MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>");429MODULE_DESCRIPTION("ALSA SoC MAX98371 driver");430MODULE_LICENSE("GPL");431