1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Audio driver for AK5558 ADC 4 // 5 // Copyright (C) 2015 Asahi Kasei Microdevices Corporation 6 // Copyright 2018 NXP 7 8 #include <linux/delay.h> 9 #include <linux/gpio/consumer.h> 10 #include <linux/i2c.h> 11 #include <linux/module.h> 12 #include <linux/of_device.h> 13 #include <linux/pm_runtime.h> 14 #include <linux/regmap.h> 15 #include <linux/regulator/consumer.h> 16 #include <linux/slab.h> 17 18 #include <sound/initval.h> 19 #include <sound/pcm.h> 20 #include <sound/pcm_params.h> 21 #include <sound/soc.h> 22 #include <sound/soc-dapm.h> 23 #include <sound/tlv.h> 24 25 #include "ak5558.h" 26 27 enum ak555x_type { 28 AK5558, 29 AK5552, 30 }; 31 32 #define AK5558_NUM_SUPPLIES 2 33 static const char *ak5558_supply_names[AK5558_NUM_SUPPLIES] = { 34 "DVDD", 35 "AVDD", 36 }; 37 38 /* AK5558 Codec Private Data */ 39 struct ak5558_priv { 40 struct regulator_bulk_data supplies[AK5558_NUM_SUPPLIES]; 41 struct snd_soc_component component; 42 struct regmap *regmap; 43 struct i2c_client *i2c; 44 struct gpio_desc *reset_gpiod; /* Reset & Power down GPIO */ 45 int slots; 46 int slot_width; 47 }; 48 49 /* ak5558 register cache & default register settings */ 50 static const struct reg_default ak5558_reg[] = { 51 { 0x0, 0xFF }, /* 0x00 AK5558_00_POWER_MANAGEMENT1 */ 52 { 0x1, 0x01 }, /* 0x01 AK5558_01_POWER_MANAGEMENT2 */ 53 { 0x2, 0x01 }, /* 0x02 AK5558_02_CONTROL1 */ 54 { 0x3, 0x00 }, /* 0x03 AK5558_03_CONTROL2 */ 55 { 0x4, 0x00 }, /* 0x04 AK5558_04_CONTROL3 */ 56 { 0x5, 0x00 } /* 0x05 AK5558_05_DSD */ 57 }; 58 59 static const char * const mono_texts[] = { 60 "8 Slot", "2 Slot", "4 Slot", "1 Slot", 61 }; 62 63 static const struct soc_enum ak5558_mono_enum[] = { 64 SOC_ENUM_SINGLE(AK5558_01_POWER_MANAGEMENT2, 1, 65 ARRAY_SIZE(mono_texts), mono_texts), 66 }; 67 68 static const char * const mono_5552_texts[] = { 69 "2 Slot", "1 Slot (Fixed)", "2 Slot", "1 Slot (Optimal)", 70 }; 71 72 static const struct soc_enum ak5552_mono_enum[] = { 73 SOC_ENUM_SINGLE(AK5558_01_POWER_MANAGEMENT2, 1, 74 ARRAY_SIZE(mono_5552_texts), mono_5552_texts), 75 }; 76 77 static const char * const digfil_texts[] = { 78 "Sharp Roll-Off", "Slow Roll-Off", 79 "Short Delay Sharp Roll-Off", "Short Delay Slow Roll-Off", 80 }; 81 82 static const struct soc_enum ak5558_adcset_enum[] = { 83 SOC_ENUM_SINGLE(AK5558_04_CONTROL3, 0, 84 ARRAY_SIZE(digfil_texts), digfil_texts), 85 }; 86 87 static const struct snd_kcontrol_new ak5558_snd_controls[] = { 88 SOC_ENUM("Monaural Mode", ak5558_mono_enum[0]), 89 SOC_ENUM("Digital Filter", ak5558_adcset_enum[0]), 90 }; 91 92 static const struct snd_kcontrol_new ak5552_snd_controls[] = { 93 SOC_ENUM("Monaural Mode", ak5552_mono_enum[0]), 94 SOC_ENUM("Digital Filter", ak5558_adcset_enum[0]), 95 }; 96 97 static const struct snd_soc_dapm_widget ak5558_dapm_widgets[] = { 98 /* Analog Input */ 99 SND_SOC_DAPM_INPUT("AIN1"), 100 SND_SOC_DAPM_INPUT("AIN2"), 101 SND_SOC_DAPM_INPUT("AIN3"), 102 SND_SOC_DAPM_INPUT("AIN4"), 103 SND_SOC_DAPM_INPUT("AIN5"), 104 SND_SOC_DAPM_INPUT("AIN6"), 105 SND_SOC_DAPM_INPUT("AIN7"), 106 SND_SOC_DAPM_INPUT("AIN8"), 107 108 SND_SOC_DAPM_ADC("ADC Ch1", NULL, AK5558_00_POWER_MANAGEMENT1, 0, 0), 109 SND_SOC_DAPM_ADC("ADC Ch2", NULL, AK5558_00_POWER_MANAGEMENT1, 1, 0), 110 SND_SOC_DAPM_ADC("ADC Ch3", NULL, AK5558_00_POWER_MANAGEMENT1, 2, 0), 111 SND_SOC_DAPM_ADC("ADC Ch4", NULL, AK5558_00_POWER_MANAGEMENT1, 3, 0), 112 SND_SOC_DAPM_ADC("ADC Ch5", NULL, AK5558_00_POWER_MANAGEMENT1, 4, 0), 113 SND_SOC_DAPM_ADC("ADC Ch6", NULL, AK5558_00_POWER_MANAGEMENT1, 5, 0), 114 SND_SOC_DAPM_ADC("ADC Ch7", NULL, AK5558_00_POWER_MANAGEMENT1, 6, 0), 115 SND_SOC_DAPM_ADC("ADC Ch8", NULL, AK5558_00_POWER_MANAGEMENT1, 7, 0), 116 117 SND_SOC_DAPM_AIF_OUT("SDTO", "Capture", 0, SND_SOC_NOPM, 0, 0), 118 }; 119 120 static const struct snd_soc_dapm_widget ak5552_dapm_widgets[] = { 121 /* Analog Input */ 122 SND_SOC_DAPM_INPUT("AIN1"), 123 SND_SOC_DAPM_INPUT("AIN2"), 124 125 SND_SOC_DAPM_ADC("ADC Ch1", NULL, AK5558_00_POWER_MANAGEMENT1, 0, 0), 126 SND_SOC_DAPM_ADC("ADC Ch2", NULL, AK5558_00_POWER_MANAGEMENT1, 1, 0), 127 128 SND_SOC_DAPM_AIF_OUT("SDTO", "Capture", 0, SND_SOC_NOPM, 0, 0), 129 }; 130 131 static const struct snd_soc_dapm_route ak5558_intercon[] = { 132 {"ADC Ch1", NULL, "AIN1"}, 133 {"SDTO", NULL, "ADC Ch1"}, 134 135 {"ADC Ch2", NULL, "AIN2"}, 136 {"SDTO", NULL, "ADC Ch2"}, 137 138 {"ADC Ch3", NULL, "AIN3"}, 139 {"SDTO", NULL, "ADC Ch3"}, 140 141 {"ADC Ch4", NULL, "AIN4"}, 142 {"SDTO", NULL, "ADC Ch4"}, 143 144 {"ADC Ch5", NULL, "AIN5"}, 145 {"SDTO", NULL, "ADC Ch5"}, 146 147 {"ADC Ch6", NULL, "AIN6"}, 148 {"SDTO", NULL, "ADC Ch6"}, 149 150 {"ADC Ch7", NULL, "AIN7"}, 151 {"SDTO", NULL, "ADC Ch7"}, 152 153 {"ADC Ch8", NULL, "AIN8"}, 154 {"SDTO", NULL, "ADC Ch8"}, 155 }; 156 157 static const struct snd_soc_dapm_route ak5552_intercon[] = { 158 {"ADC Ch1", NULL, "AIN1"}, 159 {"SDTO", NULL, "ADC Ch1"}, 160 161 {"ADC Ch2", NULL, "AIN2"}, 162 {"SDTO", NULL, "ADC Ch2"}, 163 }; 164 165 static int ak5558_set_mcki(struct snd_soc_component *component) 166 { 167 return snd_soc_component_update_bits(component, AK5558_02_CONTROL1, AK5558_CKS, 168 AK5558_CKS_AUTO); 169 } 170 171 static int ak5558_hw_params(struct snd_pcm_substream *substream, 172 struct snd_pcm_hw_params *params, 173 struct snd_soc_dai *dai) 174 { 175 struct snd_soc_component *component = dai->component; 176 struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component); 177 u8 bits; 178 int pcm_width = max(params_physical_width(params), ak5558->slot_width); 179 180 switch (pcm_width) { 181 case 16: 182 bits = AK5558_DIF_24BIT_MODE; 183 break; 184 case 32: 185 bits = AK5558_DIF_32BIT_MODE; 186 break; 187 default: 188 return -EINVAL; 189 } 190 191 snd_soc_component_update_bits(component, AK5558_02_CONTROL1, AK5558_BITS, bits); 192 193 return 0; 194 } 195 196 static int ak5558_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) 197 { 198 struct snd_soc_component *component = dai->component; 199 u8 format; 200 201 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 202 case SND_SOC_DAIFMT_CBS_CFS: 203 break; 204 case SND_SOC_DAIFMT_CBM_CFM: 205 break; 206 case SND_SOC_DAIFMT_CBS_CFM: 207 case SND_SOC_DAIFMT_CBM_CFS: 208 default: 209 dev_err(dai->dev, "Clock mode unsupported"); 210 return -EINVAL; 211 } 212 213 /* set master/slave audio interface */ 214 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 215 case SND_SOC_DAIFMT_I2S: 216 format = AK5558_DIF_I2S_MODE; 217 break; 218 case SND_SOC_DAIFMT_LEFT_J: 219 format = AK5558_DIF_MSB_MODE; 220 break; 221 case SND_SOC_DAIFMT_DSP_B: 222 format = AK5558_DIF_MSB_MODE; 223 break; 224 default: 225 return -EINVAL; 226 } 227 228 snd_soc_component_update_bits(component, AK5558_02_CONTROL1, AK5558_DIF, format); 229 230 return 0; 231 } 232 233 static int ak5558_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, 234 unsigned int rx_mask, int slots, 235 int slot_width) 236 { 237 struct snd_soc_component *component = dai->component; 238 struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component); 239 int tdm_mode; 240 241 ak5558->slots = slots; 242 ak5558->slot_width = slot_width; 243 244 switch (slots * slot_width) { 245 case 128: 246 tdm_mode = AK5558_MODE_TDM128; 247 break; 248 case 256: 249 tdm_mode = AK5558_MODE_TDM256; 250 break; 251 case 512: 252 tdm_mode = AK5558_MODE_TDM512; 253 break; 254 default: 255 tdm_mode = AK5558_MODE_NORMAL; 256 break; 257 } 258 259 snd_soc_component_update_bits(component, AK5558_03_CONTROL2, AK5558_MODE_BITS, 260 tdm_mode); 261 return 0; 262 } 263 264 #define AK5558_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ 265 SNDRV_PCM_FMTBIT_S24_LE |\ 266 SNDRV_PCM_FMTBIT_S32_LE) 267 268 static const unsigned int ak5558_rates[] = { 269 8000, 11025, 16000, 22050, 270 32000, 44100, 48000, 88200, 271 96000, 176400, 192000, 352800, 272 384000, 705600, 768000, 1411200, 273 2822400, 274 }; 275 276 static const struct snd_pcm_hw_constraint_list ak5558_rate_constraints = { 277 .count = ARRAY_SIZE(ak5558_rates), 278 .list = ak5558_rates, 279 }; 280 281 static int ak5558_startup(struct snd_pcm_substream *substream, 282 struct snd_soc_dai *dai) 283 { 284 return snd_pcm_hw_constraint_list(substream->runtime, 0, 285 SNDRV_PCM_HW_PARAM_RATE, 286 &ak5558_rate_constraints); 287 } 288 289 static const struct snd_soc_dai_ops ak5558_dai_ops = { 290 .startup = ak5558_startup, 291 .hw_params = ak5558_hw_params, 292 293 .set_fmt = ak5558_set_dai_fmt, 294 .set_tdm_slot = ak5558_set_tdm_slot, 295 }; 296 297 static struct snd_soc_dai_driver ak5558_dai = { 298 .name = "ak5558-aif", 299 .capture = { 300 .stream_name = "Capture", 301 .channels_min = 1, 302 .channels_max = 8, 303 .rates = SNDRV_PCM_RATE_KNOT, 304 .formats = AK5558_FORMATS, 305 }, 306 .ops = &ak5558_dai_ops, 307 }; 308 309 static struct snd_soc_dai_driver ak5552_dai = { 310 .name = "ak5552-aif", 311 .capture = { 312 .stream_name = "Capture", 313 .channels_min = 1, 314 .channels_max = 2, 315 .rates = SNDRV_PCM_RATE_KNOT, 316 .formats = AK5558_FORMATS, 317 }, 318 .ops = &ak5558_dai_ops, 319 }; 320 321 static void ak5558_reset(struct ak5558_priv *ak5558, bool active) 322 { 323 if (!ak5558->reset_gpiod) 324 return; 325 326 gpiod_set_value_cansleep(ak5558->reset_gpiod, active); 327 usleep_range(1000, 2000); 328 } 329 330 static int ak5558_probe(struct snd_soc_component *component) 331 { 332 struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component); 333 334 ak5558_reset(ak5558, false); 335 return ak5558_set_mcki(component); 336 } 337 338 static void ak5558_remove(struct snd_soc_component *component) 339 { 340 struct ak5558_priv *ak5558 = snd_soc_component_get_drvdata(component); 341 342 ak5558_reset(ak5558, true); 343 } 344 345 static int __maybe_unused ak5558_runtime_suspend(struct device *dev) 346 { 347 struct ak5558_priv *ak5558 = dev_get_drvdata(dev); 348 349 regcache_cache_only(ak5558->regmap, true); 350 ak5558_reset(ak5558, true); 351 352 regulator_bulk_disable(ARRAY_SIZE(ak5558->supplies), 353 ak5558->supplies); 354 return 0; 355 } 356 357 static int __maybe_unused ak5558_runtime_resume(struct device *dev) 358 { 359 struct ak5558_priv *ak5558 = dev_get_drvdata(dev); 360 int ret; 361 362 ret = regulator_bulk_enable(ARRAY_SIZE(ak5558->supplies), 363 ak5558->supplies); 364 if (ret != 0) { 365 dev_err(dev, "Failed to enable supplies: %d\n", ret); 366 return ret; 367 } 368 369 ak5558_reset(ak5558, true); 370 ak5558_reset(ak5558, false); 371 372 regcache_cache_only(ak5558->regmap, false); 373 regcache_mark_dirty(ak5558->regmap); 374 375 return regcache_sync(ak5558->regmap); 376 } 377 378 static const struct dev_pm_ops ak5558_pm = { 379 SET_RUNTIME_PM_OPS(ak5558_runtime_suspend, ak5558_runtime_resume, NULL) 380 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 381 pm_runtime_force_resume) 382 }; 383 384 static const struct snd_soc_component_driver soc_codec_dev_ak5558 = { 385 .probe = ak5558_probe, 386 .remove = ak5558_remove, 387 .controls = ak5558_snd_controls, 388 .num_controls = ARRAY_SIZE(ak5558_snd_controls), 389 .dapm_widgets = ak5558_dapm_widgets, 390 .num_dapm_widgets = ARRAY_SIZE(ak5558_dapm_widgets), 391 .dapm_routes = ak5558_intercon, 392 .num_dapm_routes = ARRAY_SIZE(ak5558_intercon), 393 .idle_bias_on = 1, 394 .use_pmdown_time = 1, 395 .endianness = 1, 396 .non_legacy_dai_naming = 1, 397 }; 398 399 static const struct snd_soc_component_driver soc_codec_dev_ak5552 = { 400 .probe = ak5558_probe, 401 .remove = ak5558_remove, 402 .controls = ak5552_snd_controls, 403 .num_controls = ARRAY_SIZE(ak5552_snd_controls), 404 .dapm_widgets = ak5552_dapm_widgets, 405 .num_dapm_widgets = ARRAY_SIZE(ak5552_dapm_widgets), 406 .dapm_routes = ak5552_intercon, 407 .num_dapm_routes = ARRAY_SIZE(ak5552_intercon), 408 .idle_bias_on = 1, 409 .use_pmdown_time = 1, 410 .endianness = 1, 411 .non_legacy_dai_naming = 1, 412 }; 413 414 static const struct regmap_config ak5558_regmap = { 415 .reg_bits = 8, 416 .val_bits = 8, 417 418 .max_register = AK5558_05_DSD, 419 .reg_defaults = ak5558_reg, 420 .num_reg_defaults = ARRAY_SIZE(ak5558_reg), 421 .cache_type = REGCACHE_RBTREE, 422 }; 423 424 static int ak5558_i2c_probe(struct i2c_client *i2c) 425 { 426 struct ak5558_priv *ak5558; 427 int ret = 0; 428 int dev_id; 429 int i; 430 431 ak5558 = devm_kzalloc(&i2c->dev, sizeof(*ak5558), GFP_KERNEL); 432 if (!ak5558) 433 return -ENOMEM; 434 435 ak5558->regmap = devm_regmap_init_i2c(i2c, &ak5558_regmap); 436 if (IS_ERR(ak5558->regmap)) 437 return PTR_ERR(ak5558->regmap); 438 439 i2c_set_clientdata(i2c, ak5558); 440 ak5558->i2c = i2c; 441 442 ak5558->reset_gpiod = devm_gpiod_get_optional(&i2c->dev, "reset", 443 GPIOD_OUT_LOW); 444 if (IS_ERR(ak5558->reset_gpiod)) 445 return PTR_ERR(ak5558->reset_gpiod); 446 447 for (i = 0; i < ARRAY_SIZE(ak5558->supplies); i++) 448 ak5558->supplies[i].supply = ak5558_supply_names[i]; 449 450 ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(ak5558->supplies), 451 ak5558->supplies); 452 if (ret != 0) { 453 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret); 454 return ret; 455 } 456 457 dev_id = (uintptr_t)of_device_get_match_data(&i2c->dev); 458 switch (dev_id) { 459 case AK5552: 460 ret = devm_snd_soc_register_component(&i2c->dev, 461 &soc_codec_dev_ak5552, 462 &ak5552_dai, 1); 463 break; 464 case AK5558: 465 ret = devm_snd_soc_register_component(&i2c->dev, 466 &soc_codec_dev_ak5558, 467 &ak5558_dai, 1); 468 break; 469 default: 470 dev_err(&i2c->dev, "unexpected device type\n"); 471 return -EINVAL; 472 } 473 if (ret < 0) { 474 dev_err(&i2c->dev, "failed to register component: %d\n", ret); 475 return ret; 476 } 477 478 pm_runtime_enable(&i2c->dev); 479 regcache_cache_only(ak5558->regmap, true); 480 481 return 0; 482 } 483 484 static int ak5558_i2c_remove(struct i2c_client *i2c) 485 { 486 pm_runtime_disable(&i2c->dev); 487 488 return 0; 489 } 490 491 static const struct of_device_id ak5558_i2c_dt_ids[] __maybe_unused = { 492 { .compatible = "asahi-kasei,ak5558", .data = (void *) AK5558 }, 493 { .compatible = "asahi-kasei,ak5552", .data = (void *) AK5552 }, 494 { } 495 }; 496 MODULE_DEVICE_TABLE(of, ak5558_i2c_dt_ids); 497 498 static struct i2c_driver ak5558_i2c_driver = { 499 .driver = { 500 .name = "ak5558", 501 .of_match_table = of_match_ptr(ak5558_i2c_dt_ids), 502 .pm = &ak5558_pm, 503 }, 504 .probe_new = ak5558_i2c_probe, 505 .remove = ak5558_i2c_remove, 506 }; 507 508 module_i2c_driver(ak5558_i2c_driver); 509 510 MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>"); 511 MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>"); 512 MODULE_DESCRIPTION("ASoC AK5558 ADC driver"); 513 MODULE_LICENSE("GPL v2"); 514