1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * ADAU1977/ADAU1978/ADAU1979 driver 4 * 5 * Copyright 2014 Analog Devices Inc. 6 * Author: Lars-Peter Clausen <lars@metafoo.de> 7 */ 8 9 #include <linux/delay.h> 10 #include <linux/device.h> 11 #include <linux/gpio/consumer.h> 12 #include <linux/i2c.h> 13 #include <linux/init.h> 14 #include <linux/module.h> 15 #include <linux/regmap.h> 16 #include <linux/regulator/consumer.h> 17 #include <linux/slab.h> 18 19 #include <sound/core.h> 20 #include <sound/initval.h> 21 #include <sound/pcm.h> 22 #include <sound/pcm_params.h> 23 #include <sound/soc.h> 24 #include <sound/tlv.h> 25 26 #include <dt-bindings/sound/adi,adau1977.h> 27 28 #include "adau1977.h" 29 30 #define ADAU1977_REG_POWER 0x00 31 #define ADAU1977_REG_PLL 0x01 32 #define ADAU1977_REG_BOOST 0x02 33 #define ADAU1977_REG_MICBIAS 0x03 34 #define ADAU1977_REG_BLOCK_POWER_SAI 0x04 35 #define ADAU1977_REG_SAI_CTRL0 0x05 36 #define ADAU1977_REG_SAI_CTRL1 0x06 37 #define ADAU1977_REG_CMAP12 0x07 38 #define ADAU1977_REG_CMAP34 0x08 39 #define ADAU1977_REG_SAI_OVERTEMP 0x09 40 #define ADAU1977_REG_POST_ADC_GAIN(x) (0x0a + (x)) 41 #define ADAU1977_REG_MISC_CONTROL 0x0e 42 #define ADAU1977_REG_DIAG_CONTROL 0x10 43 #define ADAU1977_REG_STATUS(x) (0x11 + (x)) 44 #define ADAU1977_REG_DIAG_IRQ1 0x15 45 #define ADAU1977_REG_DIAG_IRQ2 0x16 46 #define ADAU1977_REG_ADJUST1 0x17 47 #define ADAU1977_REG_ADJUST2 0x18 48 #define ADAU1977_REG_ADC_CLIP 0x19 49 #define ADAU1977_REG_DC_HPF_CAL 0x1a 50 51 #define ADAU1977_POWER_RESET BIT(7) 52 #define ADAU1977_POWER_PWUP BIT(0) 53 54 #define ADAU1977_PLL_CLK_S BIT(4) 55 #define ADAU1977_PLL_MCS_MASK 0x7 56 57 #define ADAU1977_MICBIAS_MB_VOLTS_MASK 0xf0 58 #define ADAU1977_MICBIAS_MB_VOLTS_OFFSET 4 59 60 #define ADAU1977_BLOCK_POWER_SAI_LR_POL BIT(7) 61 #define ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE BIT(6) 62 #define ADAU1977_BLOCK_POWER_SAI_LDO_EN BIT(5) 63 64 #define ADAU1977_SAI_CTRL0_FMT_MASK (0x3 << 6) 65 #define ADAU1977_SAI_CTRL0_FMT_I2S (0x0 << 6) 66 #define ADAU1977_SAI_CTRL0_FMT_LJ (0x1 << 6) 67 #define ADAU1977_SAI_CTRL0_FMT_RJ_24BIT (0x2 << 6) 68 #define ADAU1977_SAI_CTRL0_FMT_RJ_16BIT (0x3 << 6) 69 70 #define ADAU1977_SAI_CTRL0_SAI_MASK (0x7 << 3) 71 #define ADAU1977_SAI_CTRL0_SAI_I2S (0x0 << 3) 72 #define ADAU1977_SAI_CTRL0_SAI_TDM_2 (0x1 << 3) 73 #define ADAU1977_SAI_CTRL0_SAI_TDM_4 (0x2 << 3) 74 #define ADAU1977_SAI_CTRL0_SAI_TDM_8 (0x3 << 3) 75 #define ADAU1977_SAI_CTRL0_SAI_TDM_16 (0x4 << 3) 76 77 #define ADAU1977_SAI_CTRL0_FS_MASK (0x7) 78 #define ADAU1977_SAI_CTRL0_FS_8000_12000 (0x0) 79 #define ADAU1977_SAI_CTRL0_FS_16000_24000 (0x1) 80 #define ADAU1977_SAI_CTRL0_FS_32000_48000 (0x2) 81 #define ADAU1977_SAI_CTRL0_FS_64000_96000 (0x3) 82 #define ADAU1977_SAI_CTRL0_FS_128000_192000 (0x4) 83 84 #define ADAU1977_SAI_CTRL1_SLOT_WIDTH_MASK (0x3 << 5) 85 #define ADAU1977_SAI_CTRL1_SLOT_WIDTH_32 (0x0 << 5) 86 #define ADAU1977_SAI_CTRL1_SLOT_WIDTH_24 (0x1 << 5) 87 #define ADAU1977_SAI_CTRL1_SLOT_WIDTH_16 (0x2 << 5) 88 #define ADAU1977_SAI_CTRL1_DATA_WIDTH_MASK (0x1 << 4) 89 #define ADAU1977_SAI_CTRL1_DATA_WIDTH_16BIT (0x1 << 4) 90 #define ADAU1977_SAI_CTRL1_DATA_WIDTH_24BIT (0x0 << 4) 91 #define ADAU1977_SAI_CTRL1_LRCLK_PULSE BIT(3) 92 #define ADAU1977_SAI_CTRL1_MSB BIT(2) 93 #define ADAU1977_SAI_CTRL1_BCLKRATE_16 (0x1 << 1) 94 #define ADAU1977_SAI_CTRL1_BCLKRATE_32 (0x0 << 1) 95 #define ADAU1977_SAI_CTRL1_BCLKRATE_MASK (0x1 << 1) 96 #define ADAU1977_SAI_CTRL1_MASTER BIT(0) 97 98 #define ADAU1977_SAI_OVERTEMP_DRV_C(x) BIT(4 + (x)) 99 #define ADAU1977_SAI_OVERTEMP_DRV_HIZ BIT(3) 100 101 #define ADAU1977_MISC_CONTROL_SUM_MODE_MASK (0x3 << 6) 102 #define ADAU1977_MISC_CONTROL_SUM_MODE_1CH (0x2 << 6) 103 #define ADAU1977_MISC_CONTROL_SUM_MODE_2CH (0x1 << 6) 104 #define ADAU1977_MISC_CONTROL_SUM_MODE_4CH (0x0 << 6) 105 #define ADAU1977_MISC_CONTROL_MMUTE BIT(4) 106 #define ADAU1977_MISC_CONTROL_DC_CAL BIT(0) 107 108 #define ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET 4 109 #define ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET 0 110 111 struct adau1977 { 112 struct regmap *regmap; 113 bool right_j; 114 unsigned int sysclk; 115 enum adau1977_sysclk_src sysclk_src; 116 struct gpio_desc *reset_gpio; 117 enum adau1977_type type; 118 119 struct regulator *avdd_reg; 120 struct regulator *dvdd_reg; 121 122 struct snd_pcm_hw_constraint_list constraints; 123 124 struct device *dev; 125 void (*switch_mode)(struct device *dev); 126 127 unsigned int max_clock_provider_fs; 128 unsigned int slot_width; 129 bool enabled; 130 bool clock_provider; 131 }; 132 133 static const struct reg_default adau1977_reg_defaults[] = { 134 { 0x00, 0x00 }, 135 { 0x01, 0x41 }, 136 { 0x02, 0x4a }, 137 { 0x03, 0x7d }, 138 { 0x04, 0x3d }, 139 { 0x05, 0x02 }, 140 { 0x06, 0x00 }, 141 { 0x07, 0x10 }, 142 { 0x08, 0x32 }, 143 { 0x09, 0xf0 }, 144 { 0x0a, 0xa0 }, 145 { 0x0b, 0xa0 }, 146 { 0x0c, 0xa0 }, 147 { 0x0d, 0xa0 }, 148 { 0x0e, 0x02 }, 149 { 0x10, 0x0f }, 150 { 0x15, 0x20 }, 151 { 0x16, 0x00 }, 152 { 0x17, 0x00 }, 153 { 0x18, 0x00 }, 154 { 0x1a, 0x00 }, 155 }; 156 157 static const DECLARE_TLV_DB_MINMAX_MUTE(adau1977_adc_gain, -3562, 6000); 158 159 static const struct snd_soc_dapm_widget adau1977_micbias_dapm_widgets[] = { 160 SND_SOC_DAPM_SUPPLY("MICBIAS", ADAU1977_REG_MICBIAS, 161 3, 0, NULL, 0) 162 }; 163 164 static const struct snd_soc_dapm_widget adau1977_dapm_widgets[] = { 165 SND_SOC_DAPM_SUPPLY("Vref", ADAU1977_REG_BLOCK_POWER_SAI, 166 4, 0, NULL, 0), 167 168 SND_SOC_DAPM_ADC("ADC1", "Capture", ADAU1977_REG_BLOCK_POWER_SAI, 0, 0), 169 SND_SOC_DAPM_ADC("ADC2", "Capture", ADAU1977_REG_BLOCK_POWER_SAI, 1, 0), 170 SND_SOC_DAPM_ADC("ADC3", "Capture", ADAU1977_REG_BLOCK_POWER_SAI, 2, 0), 171 SND_SOC_DAPM_ADC("ADC4", "Capture", ADAU1977_REG_BLOCK_POWER_SAI, 3, 0), 172 173 SND_SOC_DAPM_INPUT("AIN1"), 174 SND_SOC_DAPM_INPUT("AIN2"), 175 SND_SOC_DAPM_INPUT("AIN3"), 176 SND_SOC_DAPM_INPUT("AIN4"), 177 178 SND_SOC_DAPM_OUTPUT("VREF"), 179 }; 180 181 static const struct snd_soc_dapm_route adau1977_dapm_routes[] = { 182 { "ADC1", NULL, "AIN1" }, 183 { "ADC2", NULL, "AIN2" }, 184 { "ADC3", NULL, "AIN3" }, 185 { "ADC4", NULL, "AIN4" }, 186 187 { "ADC1", NULL, "Vref" }, 188 { "ADC2", NULL, "Vref" }, 189 { "ADC3", NULL, "Vref" }, 190 { "ADC4", NULL, "Vref" }, 191 192 { "VREF", NULL, "Vref" }, 193 }; 194 195 #define ADAU1977_VOLUME(x) \ 196 SOC_SINGLE_TLV("ADC" #x " Capture Volume", \ 197 ADAU1977_REG_POST_ADC_GAIN((x) - 1), \ 198 0, 255, 1, adau1977_adc_gain) 199 200 #define ADAU1977_HPF_SWITCH(x) \ 201 SOC_SINGLE("ADC" #x " Highpass-Filter Capture Switch", \ 202 ADAU1977_REG_DC_HPF_CAL, (x) - 1, 1, 0) 203 204 #define ADAU1977_DC_SUB_SWITCH(x) \ 205 SOC_SINGLE("ADC" #x " DC Subtraction Capture Switch", \ 206 ADAU1977_REG_DC_HPF_CAL, (x) + 3, 1, 0) 207 208 static const struct snd_kcontrol_new adau1977_snd_controls[] = { 209 ADAU1977_VOLUME(1), 210 ADAU1977_VOLUME(2), 211 ADAU1977_VOLUME(3), 212 ADAU1977_VOLUME(4), 213 214 ADAU1977_HPF_SWITCH(1), 215 ADAU1977_HPF_SWITCH(2), 216 ADAU1977_HPF_SWITCH(3), 217 ADAU1977_HPF_SWITCH(4), 218 219 ADAU1977_DC_SUB_SWITCH(1), 220 ADAU1977_DC_SUB_SWITCH(2), 221 ADAU1977_DC_SUB_SWITCH(3), 222 ADAU1977_DC_SUB_SWITCH(4), 223 }; 224 225 static int adau1977_reset(struct adau1977 *adau1977) 226 { 227 int ret; 228 229 /* 230 * The reset bit is obviously volatile, but we need to be able to cache 231 * the other bits in the register, so we can't just mark the whole 232 * register as volatile. Since this is the only place where we'll ever 233 * touch the reset bit just bypass the cache for this operation. 234 */ 235 regcache_cache_bypass(adau1977->regmap, true); 236 ret = regmap_write(adau1977->regmap, ADAU1977_REG_POWER, 237 ADAU1977_POWER_RESET); 238 regcache_cache_bypass(adau1977->regmap, false); 239 240 return ret; 241 } 242 243 /* 244 * Returns the appropriate setting for ths FS field in the CTRL0 register 245 * depending on the rate. 246 */ 247 static int adau1977_lookup_fs(unsigned int rate) 248 { 249 if (rate >= 8000 && rate <= 12000) 250 return ADAU1977_SAI_CTRL0_FS_8000_12000; 251 else if (rate >= 16000 && rate <= 24000) 252 return ADAU1977_SAI_CTRL0_FS_16000_24000; 253 else if (rate >= 32000 && rate <= 48000) 254 return ADAU1977_SAI_CTRL0_FS_32000_48000; 255 else if (rate >= 64000 && rate <= 96000) 256 return ADAU1977_SAI_CTRL0_FS_64000_96000; 257 else if (rate >= 128000 && rate <= 192000) 258 return ADAU1977_SAI_CTRL0_FS_128000_192000; 259 else 260 return -EINVAL; 261 } 262 263 static int adau1977_lookup_mcs(struct adau1977 *adau1977, unsigned int rate, 264 unsigned int fs) 265 { 266 unsigned int mcs; 267 268 /* 269 * rate = sysclk / (512 * mcs_lut[mcs]) * 2**fs 270 * => mcs_lut[mcs] = sysclk / (512 * rate) * 2**fs 271 * => mcs_lut[mcs] = sysclk / ((512 / 2**fs) * rate) 272 */ 273 274 rate *= 512 >> fs; 275 276 if (adau1977->sysclk % rate != 0) 277 return -EINVAL; 278 279 mcs = adau1977->sysclk / rate; 280 281 /* The factors configured by MCS are 1, 2, 3, 4, 6 */ 282 if (mcs < 1 || mcs > 6 || mcs == 5) 283 return -EINVAL; 284 285 mcs = mcs - 1; 286 if (mcs == 5) 287 mcs = 4; 288 289 return mcs; 290 } 291 292 static int adau1977_hw_params(struct snd_pcm_substream *substream, 293 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 294 { 295 struct snd_soc_component *component = dai->component; 296 struct adau1977 *adau1977 = snd_soc_component_get_drvdata(component); 297 unsigned int rate = params_rate(params); 298 unsigned int slot_width; 299 unsigned int ctrl0, ctrl0_mask; 300 unsigned int ctrl1; 301 int mcs, fs; 302 int ret; 303 304 fs = adau1977_lookup_fs(rate); 305 if (fs < 0) 306 return fs; 307 308 if (adau1977->sysclk_src == ADAU1977_SYSCLK_SRC_MCLK) { 309 mcs = adau1977_lookup_mcs(adau1977, rate, fs); 310 if (mcs < 0) 311 return mcs; 312 } else { 313 mcs = 0; 314 } 315 316 ctrl0_mask = ADAU1977_SAI_CTRL0_FS_MASK; 317 ctrl0 = fs; 318 319 if (adau1977->right_j) { 320 switch (params_width(params)) { 321 case 16: 322 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_16BIT; 323 break; 324 case 24: 325 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_24BIT; 326 break; 327 default: 328 return -EINVAL; 329 } 330 ctrl0_mask |= ADAU1977_SAI_CTRL0_FMT_MASK; 331 } 332 333 if (adau1977->clock_provider) { 334 switch (params_width(params)) { 335 case 16: 336 ctrl1 = ADAU1977_SAI_CTRL1_DATA_WIDTH_16BIT; 337 slot_width = 16; 338 break; 339 case 24: 340 case 32: 341 ctrl1 = ADAU1977_SAI_CTRL1_DATA_WIDTH_24BIT; 342 slot_width = 32; 343 break; 344 default: 345 return -EINVAL; 346 } 347 348 /* In TDM mode there is a fixed slot width */ 349 if (adau1977->slot_width) 350 slot_width = adau1977->slot_width; 351 352 if (slot_width == 16) 353 ctrl1 |= ADAU1977_SAI_CTRL1_BCLKRATE_16; 354 else 355 ctrl1 |= ADAU1977_SAI_CTRL1_BCLKRATE_32; 356 357 ret = regmap_update_bits(adau1977->regmap, 358 ADAU1977_REG_SAI_CTRL1, 359 ADAU1977_SAI_CTRL1_DATA_WIDTH_MASK | 360 ADAU1977_SAI_CTRL1_BCLKRATE_MASK, 361 ctrl1); 362 if (ret < 0) 363 return ret; 364 } 365 366 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0, 367 ctrl0_mask, ctrl0); 368 if (ret < 0) 369 return ret; 370 371 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_PLL, 372 ADAU1977_PLL_MCS_MASK, mcs); 373 } 374 375 static int adau1977_power_disable(struct adau1977 *adau1977) 376 { 377 int ret = 0; 378 379 if (!adau1977->enabled) 380 return 0; 381 382 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_POWER, 383 ADAU1977_POWER_PWUP, 0); 384 if (ret) 385 return ret; 386 387 regcache_mark_dirty(adau1977->regmap); 388 389 gpiod_set_value_cansleep(adau1977->reset_gpio, 0); 390 391 regcache_cache_only(adau1977->regmap, true); 392 393 regulator_disable(adau1977->avdd_reg); 394 if (adau1977->dvdd_reg) 395 regulator_disable(adau1977->dvdd_reg); 396 397 adau1977->enabled = false; 398 399 return 0; 400 } 401 402 static int adau1977_power_enable(struct adau1977 *adau1977) 403 { 404 unsigned int val; 405 int ret = 0; 406 407 if (adau1977->enabled) 408 return 0; 409 410 ret = regulator_enable(adau1977->avdd_reg); 411 if (ret) 412 return ret; 413 414 if (adau1977->dvdd_reg) { 415 ret = regulator_enable(adau1977->dvdd_reg); 416 if (ret) 417 goto err_disable_avdd; 418 } 419 420 gpiod_set_value_cansleep(adau1977->reset_gpio, 1); 421 422 regcache_cache_only(adau1977->regmap, false); 423 424 if (adau1977->switch_mode) 425 adau1977->switch_mode(adau1977->dev); 426 427 ret = adau1977_reset(adau1977); 428 if (ret) 429 goto err_disable_dvdd; 430 431 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_POWER, 432 ADAU1977_POWER_PWUP, ADAU1977_POWER_PWUP); 433 if (ret) 434 goto err_disable_dvdd; 435 436 ret = regcache_sync(adau1977->regmap); 437 if (ret) 438 goto err_disable_dvdd; 439 440 /* 441 * The PLL register is not affected by the software reset. It is 442 * possible that the value of the register was changed to the 443 * default value while we were in cache only mode. In this case 444 * regcache_sync will skip over it and we have to manually sync 445 * it. 446 */ 447 ret = regmap_read(adau1977->regmap, ADAU1977_REG_PLL, &val); 448 if (ret) 449 goto err_disable_dvdd; 450 451 if (val == 0x41) { 452 regcache_cache_bypass(adau1977->regmap, true); 453 ret = regmap_write(adau1977->regmap, ADAU1977_REG_PLL, 454 0x41); 455 if (ret) 456 goto err_disable_dvdd; 457 regcache_cache_bypass(adau1977->regmap, false); 458 } 459 460 adau1977->enabled = true; 461 462 return ret; 463 464 err_disable_dvdd: 465 if (adau1977->dvdd_reg) 466 regulator_disable(adau1977->dvdd_reg); 467 err_disable_avdd: 468 regulator_disable(adau1977->avdd_reg); 469 return ret; 470 } 471 472 static int adau1977_set_bias_level(struct snd_soc_component *component, 473 enum snd_soc_bias_level level) 474 { 475 struct adau1977 *adau1977 = snd_soc_component_get_drvdata(component); 476 int ret = 0; 477 478 switch (level) { 479 case SND_SOC_BIAS_ON: 480 break; 481 case SND_SOC_BIAS_PREPARE: 482 break; 483 case SND_SOC_BIAS_STANDBY: 484 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) 485 ret = adau1977_power_enable(adau1977); 486 break; 487 case SND_SOC_BIAS_OFF: 488 ret = adau1977_power_disable(adau1977); 489 break; 490 } 491 492 return ret; 493 } 494 495 static int adau1977_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, 496 unsigned int rx_mask, int slots, int width) 497 { 498 struct adau1977 *adau1977 = snd_soc_component_get_drvdata(dai->component); 499 unsigned int ctrl0, ctrl1, drv; 500 unsigned int slot[4]; 501 unsigned int i; 502 int ret; 503 504 if (slots == 0) { 505 /* 0 = No fixed slot width */ 506 adau1977->slot_width = 0; 507 adau1977->max_clock_provider_fs = 192000; 508 return regmap_update_bits(adau1977->regmap, 509 ADAU1977_REG_SAI_CTRL0, ADAU1977_SAI_CTRL0_SAI_MASK, 510 ADAU1977_SAI_CTRL0_SAI_I2S); 511 } 512 513 if (rx_mask == 0 || tx_mask != 0) 514 return -EINVAL; 515 516 drv = 0; 517 for (i = 0; i < 4; i++) { 518 slot[i] = __ffs(rx_mask); 519 drv |= ADAU1977_SAI_OVERTEMP_DRV_C(i); 520 rx_mask &= ~(1 << slot[i]); 521 if (slot[i] >= slots) 522 return -EINVAL; 523 if (rx_mask == 0) 524 break; 525 } 526 527 if (rx_mask != 0) 528 return -EINVAL; 529 530 switch (width) { 531 case 16: 532 ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_16; 533 break; 534 case 24: 535 /* We can only generate 16 bit or 32 bit wide slots */ 536 if (adau1977->clock_provider) 537 return -EINVAL; 538 ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_24; 539 break; 540 case 32: 541 ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_32; 542 break; 543 default: 544 return -EINVAL; 545 } 546 547 switch (slots) { 548 case 2: 549 ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_2; 550 break; 551 case 4: 552 ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_4; 553 break; 554 case 8: 555 ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_8; 556 break; 557 case 16: 558 ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_16; 559 break; 560 default: 561 return -EINVAL; 562 } 563 564 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_OVERTEMP, 565 ADAU1977_SAI_OVERTEMP_DRV_C(0) | 566 ADAU1977_SAI_OVERTEMP_DRV_C(1) | 567 ADAU1977_SAI_OVERTEMP_DRV_C(2) | 568 ADAU1977_SAI_OVERTEMP_DRV_C(3), drv); 569 if (ret) 570 return ret; 571 572 ret = regmap_write(adau1977->regmap, ADAU1977_REG_CMAP12, 573 (slot[1] << ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET) | 574 (slot[0] << ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET)); 575 if (ret) 576 return ret; 577 578 ret = regmap_write(adau1977->regmap, ADAU1977_REG_CMAP34, 579 (slot[3] << ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET) | 580 (slot[2] << ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET)); 581 if (ret) 582 return ret; 583 584 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0, 585 ADAU1977_SAI_CTRL0_SAI_MASK, ctrl0); 586 if (ret) 587 return ret; 588 589 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL1, 590 ADAU1977_SAI_CTRL1_SLOT_WIDTH_MASK, ctrl1); 591 if (ret) 592 return ret; 593 594 adau1977->slot_width = width; 595 596 /* In clock provider mode the maximum bitclock is 24.576 MHz */ 597 adau1977->max_clock_provider_fs = min(192000, 24576000 / width / slots); 598 599 return 0; 600 } 601 602 static int adau1977_mute(struct snd_soc_dai *dai, int mute, int stream) 603 { 604 struct adau1977 *adau1977 = snd_soc_component_get_drvdata(dai->component); 605 unsigned int val; 606 607 if (mute) 608 val = ADAU1977_MISC_CONTROL_MMUTE; 609 else 610 val = 0; 611 612 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_MISC_CONTROL, 613 ADAU1977_MISC_CONTROL_MMUTE, val); 614 } 615 616 static int adau1977_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) 617 { 618 struct adau1977 *adau1977 = snd_soc_component_get_drvdata(dai->component); 619 unsigned int ctrl0 = 0, ctrl1 = 0, block_power = 0; 620 bool invert_lrclk; 621 int ret; 622 623 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { 624 case SND_SOC_DAIFMT_CBC_CFC: 625 adau1977->clock_provider = false; 626 break; 627 case SND_SOC_DAIFMT_CBP_CFP: 628 ctrl1 |= ADAU1977_SAI_CTRL1_MASTER; 629 adau1977->clock_provider = true; 630 break; 631 default: 632 return -EINVAL; 633 } 634 635 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 636 case SND_SOC_DAIFMT_NB_NF: 637 invert_lrclk = false; 638 break; 639 case SND_SOC_DAIFMT_IB_NF: 640 block_power |= ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE; 641 invert_lrclk = false; 642 break; 643 case SND_SOC_DAIFMT_NB_IF: 644 invert_lrclk = true; 645 break; 646 case SND_SOC_DAIFMT_IB_IF: 647 block_power |= ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE; 648 invert_lrclk = true; 649 break; 650 default: 651 return -EINVAL; 652 } 653 654 adau1977->right_j = false; 655 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 656 case SND_SOC_DAIFMT_I2S: 657 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_I2S; 658 break; 659 case SND_SOC_DAIFMT_LEFT_J: 660 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_LJ; 661 invert_lrclk = !invert_lrclk; 662 break; 663 case SND_SOC_DAIFMT_RIGHT_J: 664 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_24BIT; 665 adau1977->right_j = true; 666 invert_lrclk = !invert_lrclk; 667 break; 668 case SND_SOC_DAIFMT_DSP_A: 669 ctrl1 |= ADAU1977_SAI_CTRL1_LRCLK_PULSE; 670 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_I2S; 671 invert_lrclk = false; 672 break; 673 case SND_SOC_DAIFMT_DSP_B: 674 ctrl1 |= ADAU1977_SAI_CTRL1_LRCLK_PULSE; 675 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_LJ; 676 invert_lrclk = false; 677 break; 678 default: 679 return -EINVAL; 680 } 681 682 if (invert_lrclk) 683 block_power |= ADAU1977_BLOCK_POWER_SAI_LR_POL; 684 685 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_BLOCK_POWER_SAI, 686 ADAU1977_BLOCK_POWER_SAI_LR_POL | 687 ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE, block_power); 688 if (ret) 689 return ret; 690 691 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0, 692 ADAU1977_SAI_CTRL0_FMT_MASK, 693 ctrl0); 694 if (ret) 695 return ret; 696 697 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL1, 698 ADAU1977_SAI_CTRL1_MASTER | ADAU1977_SAI_CTRL1_LRCLK_PULSE, 699 ctrl1); 700 } 701 702 static int adau1977_startup(struct snd_pcm_substream *substream, 703 struct snd_soc_dai *dai) 704 { 705 struct adau1977 *adau1977 = snd_soc_component_get_drvdata(dai->component); 706 u64 formats = 0; 707 708 if (adau1977->slot_width == 16) 709 formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE; 710 else if (adau1977->right_j || adau1977->slot_width == 24) 711 formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | 712 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE; 713 714 snd_pcm_hw_constraint_list(substream->runtime, 0, 715 SNDRV_PCM_HW_PARAM_RATE, &adau1977->constraints); 716 717 if (adau1977->clock_provider) 718 snd_pcm_hw_constraint_minmax(substream->runtime, 719 SNDRV_PCM_HW_PARAM_RATE, 8000, 720 adau1977->max_clock_provider_fs); 721 722 if (formats != 0) 723 snd_pcm_hw_constraint_mask64(substream->runtime, 724 SNDRV_PCM_HW_PARAM_FORMAT, formats); 725 726 return 0; 727 } 728 729 static int adau1977_set_tristate(struct snd_soc_dai *dai, int tristate) 730 { 731 struct adau1977 *adau1977 = snd_soc_component_get_drvdata(dai->component); 732 unsigned int val; 733 734 if (tristate) 735 val = ADAU1977_SAI_OVERTEMP_DRV_HIZ; 736 else 737 val = 0; 738 739 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_OVERTEMP, 740 ADAU1977_SAI_OVERTEMP_DRV_HIZ, val); 741 } 742 743 static const struct snd_soc_dai_ops adau1977_dai_ops = { 744 .startup = adau1977_startup, 745 .hw_params = adau1977_hw_params, 746 .mute_stream = adau1977_mute, 747 .set_fmt = adau1977_set_dai_fmt, 748 .set_tdm_slot = adau1977_set_tdm_slot, 749 .set_tristate = adau1977_set_tristate, 750 }; 751 752 static struct snd_soc_dai_driver adau1977_dai = { 753 .name = "adau1977-hifi", 754 .capture = { 755 .stream_name = "Capture", 756 .channels_min = 1, 757 .channels_max = 4, 758 .rates = SNDRV_PCM_RATE_KNOT, 759 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | 760 SNDRV_PCM_FMTBIT_S32_LE, 761 .sig_bits = 24, 762 }, 763 .ops = &adau1977_dai_ops, 764 }; 765 766 static const unsigned int adau1977_rates[] = { 767 8000, 16000, 32000, 64000, 128000, 768 11025, 22050, 44100, 88200, 172400, 769 12000, 24000, 48000, 96000, 192000, 770 }; 771 772 #define ADAU1977_RATE_CONSTRAINT_MASK_32000 0x001f 773 #define ADAU1977_RATE_CONSTRAINT_MASK_44100 0x03e0 774 #define ADAU1977_RATE_CONSTRAINT_MASK_48000 0x7c00 775 /* All rates >= 32000 */ 776 #define ADAU1977_RATE_CONSTRAINT_MASK_LRCLK 0x739c 777 778 static bool adau1977_check_sysclk(unsigned int mclk, unsigned int base_freq) 779 { 780 unsigned int mcs; 781 782 if (mclk % (base_freq * 128) != 0) 783 return false; 784 785 mcs = mclk / (128 * base_freq); 786 if (mcs < 1 || mcs > 6 || mcs == 5) 787 return false; 788 789 return true; 790 } 791 792 static int adau1977_set_sysclk(struct snd_soc_component *component, 793 int clk_id, int source, unsigned int freq, int dir) 794 { 795 struct adau1977 *adau1977 = snd_soc_component_get_drvdata(component); 796 unsigned int mask = 0; 797 unsigned int clk_src; 798 unsigned int ret; 799 800 if (dir != SND_SOC_CLOCK_IN) 801 return -EINVAL; 802 803 if (clk_id != ADAU1977_SYSCLK) 804 return -EINVAL; 805 806 switch (source) { 807 case ADAU1977_SYSCLK_SRC_MCLK: 808 clk_src = 0; 809 break; 810 case ADAU1977_SYSCLK_SRC_LRCLK: 811 clk_src = ADAU1977_PLL_CLK_S; 812 break; 813 default: 814 return -EINVAL; 815 } 816 817 if (freq != 0 && source == ADAU1977_SYSCLK_SRC_MCLK) { 818 if (freq < 4000000 || freq > 36864000) 819 return -EINVAL; 820 821 if (adau1977_check_sysclk(freq, 32000)) 822 mask |= ADAU1977_RATE_CONSTRAINT_MASK_32000; 823 if (adau1977_check_sysclk(freq, 44100)) 824 mask |= ADAU1977_RATE_CONSTRAINT_MASK_44100; 825 if (adau1977_check_sysclk(freq, 48000)) 826 mask |= ADAU1977_RATE_CONSTRAINT_MASK_48000; 827 828 if (mask == 0) 829 return -EINVAL; 830 } else if (source == ADAU1977_SYSCLK_SRC_LRCLK) { 831 mask = ADAU1977_RATE_CONSTRAINT_MASK_LRCLK; 832 } 833 834 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_PLL, 835 ADAU1977_PLL_CLK_S, clk_src); 836 if (ret) 837 return ret; 838 839 adau1977->constraints.mask = mask; 840 adau1977->sysclk_src = source; 841 adau1977->sysclk = freq; 842 843 return 0; 844 } 845 846 static int adau1977_component_probe(struct snd_soc_component *component) 847 { 848 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); 849 struct adau1977 *adau1977 = snd_soc_component_get_drvdata(component); 850 int ret; 851 852 switch (adau1977->type) { 853 case ADAU1977: 854 ret = snd_soc_dapm_new_controls(dapm, 855 adau1977_micbias_dapm_widgets, 856 ARRAY_SIZE(adau1977_micbias_dapm_widgets)); 857 if (ret < 0) 858 return ret; 859 break; 860 default: 861 break; 862 } 863 864 return 0; 865 } 866 867 static const struct snd_soc_component_driver adau1977_component_driver = { 868 .probe = adau1977_component_probe, 869 .set_bias_level = adau1977_set_bias_level, 870 .set_sysclk = adau1977_set_sysclk, 871 .controls = adau1977_snd_controls, 872 .num_controls = ARRAY_SIZE(adau1977_snd_controls), 873 .dapm_widgets = adau1977_dapm_widgets, 874 .num_dapm_widgets = ARRAY_SIZE(adau1977_dapm_widgets), 875 .dapm_routes = adau1977_dapm_routes, 876 .num_dapm_routes = ARRAY_SIZE(adau1977_dapm_routes), 877 .use_pmdown_time = 1, 878 .endianness = 1, 879 .non_legacy_dai_naming = 1, 880 }; 881 882 static int adau1977_setup_micbias(struct adau1977 *adau1977) 883 { 884 unsigned int micbias; 885 886 if (device_property_read_u32(adau1977->dev, "adi,micbias", &micbias)) 887 micbias = ADAU1977_MICBIAS_8V5; 888 889 if (micbias > ADAU1977_MICBIAS_9V0) { 890 dev_err(adau1977->dev, "Invalid value for 'adi,micbias'\n"); 891 return -EINVAL; 892 } 893 894 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_MICBIAS, 895 ADAU1977_MICBIAS_MB_VOLTS_MASK, 896 micbias << ADAU1977_MICBIAS_MB_VOLTS_OFFSET); 897 } 898 899 int adau1977_probe(struct device *dev, struct regmap *regmap, 900 enum adau1977_type type, void (*switch_mode)(struct device *dev)) 901 { 902 unsigned int power_off_mask; 903 struct adau1977 *adau1977; 904 int ret; 905 906 if (IS_ERR(regmap)) 907 return PTR_ERR(regmap); 908 909 adau1977 = devm_kzalloc(dev, sizeof(*adau1977), GFP_KERNEL); 910 if (adau1977 == NULL) 911 return -ENOMEM; 912 913 adau1977->dev = dev; 914 adau1977->type = type; 915 adau1977->regmap = regmap; 916 adau1977->switch_mode = switch_mode; 917 adau1977->max_clock_provider_fs = 192000; 918 919 adau1977->constraints.list = adau1977_rates; 920 adau1977->constraints.count = ARRAY_SIZE(adau1977_rates); 921 922 adau1977->avdd_reg = devm_regulator_get(dev, "AVDD"); 923 if (IS_ERR(adau1977->avdd_reg)) 924 return PTR_ERR(adau1977->avdd_reg); 925 926 adau1977->dvdd_reg = devm_regulator_get_optional(dev, "DVDD"); 927 if (IS_ERR(adau1977->dvdd_reg)) { 928 if (PTR_ERR(adau1977->dvdd_reg) != -ENODEV) 929 return PTR_ERR(adau1977->dvdd_reg); 930 adau1977->dvdd_reg = NULL; 931 } 932 933 adau1977->reset_gpio = devm_gpiod_get_optional(dev, "reset", 934 GPIOD_OUT_LOW); 935 if (IS_ERR(adau1977->reset_gpio)) 936 return PTR_ERR(adau1977->reset_gpio); 937 938 dev_set_drvdata(dev, adau1977); 939 940 if (adau1977->reset_gpio) 941 ndelay(100); 942 943 ret = adau1977_power_enable(adau1977); 944 if (ret) 945 return ret; 946 947 if (type == ADAU1977) { 948 ret = adau1977_setup_micbias(adau1977); 949 if (ret) 950 goto err_poweroff; 951 } 952 953 if (adau1977->dvdd_reg) 954 power_off_mask = ~0; 955 else 956 power_off_mask = (unsigned int)~ADAU1977_BLOCK_POWER_SAI_LDO_EN; 957 958 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_BLOCK_POWER_SAI, 959 power_off_mask, 0x00); 960 if (ret) 961 goto err_poweroff; 962 963 ret = adau1977_power_disable(adau1977); 964 if (ret) 965 return ret; 966 967 return devm_snd_soc_register_component(dev, &adau1977_component_driver, 968 &adau1977_dai, 1); 969 970 err_poweroff: 971 adau1977_power_disable(adau1977); 972 return ret; 973 974 } 975 EXPORT_SYMBOL_GPL(adau1977_probe); 976 977 static bool adau1977_register_volatile(struct device *dev, unsigned int reg) 978 { 979 switch (reg) { 980 case ADAU1977_REG_STATUS(0): 981 case ADAU1977_REG_STATUS(1): 982 case ADAU1977_REG_STATUS(2): 983 case ADAU1977_REG_STATUS(3): 984 case ADAU1977_REG_ADC_CLIP: 985 return true; 986 } 987 988 return false; 989 } 990 991 const struct regmap_config adau1977_regmap_config = { 992 .max_register = ADAU1977_REG_DC_HPF_CAL, 993 .volatile_reg = adau1977_register_volatile, 994 995 .cache_type = REGCACHE_RBTREE, 996 .reg_defaults = adau1977_reg_defaults, 997 .num_reg_defaults = ARRAY_SIZE(adau1977_reg_defaults), 998 }; 999 EXPORT_SYMBOL_GPL(adau1977_regmap_config); 1000 1001 MODULE_DESCRIPTION("ASoC ADAU1977/ADAU1978/ADAU1979 driver"); 1002 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 1003 MODULE_LICENSE("GPL"); 1004