1 /* 2 * ADAU1977/ADAU1978/ADAU1979 driver 3 * 4 * Copyright 2014 Analog Devices Inc. 5 * Author: Lars-Peter Clausen <lars@metafoo.de> 6 * 7 * Licensed under the GPL-2. 8 */ 9 10 #include <linux/delay.h> 11 #include <linux/device.h> 12 #include <linux/gpio/consumer.h> 13 #include <linux/i2c.h> 14 #include <linux/init.h> 15 #include <linux/module.h> 16 #include <linux/platform_data/adau1977.h> 17 #include <linux/regmap.h> 18 #include <linux/regulator/consumer.h> 19 #include <linux/slab.h> 20 21 #include <sound/core.h> 22 #include <sound/initval.h> 23 #include <sound/pcm.h> 24 #include <sound/pcm_params.h> 25 #include <sound/soc.h> 26 #include <sound/tlv.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_master_fs; 128 unsigned int slot_width; 129 bool enabled; 130 bool master; 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 Substraction 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 if (ret) 240 return ret; 241 242 return ret; 243 } 244 245 /* 246 * Returns the appropriate setting for ths FS field in the CTRL0 register 247 * depending on the rate. 248 */ 249 static int adau1977_lookup_fs(unsigned int rate) 250 { 251 if (rate >= 8000 && rate <= 12000) 252 return ADAU1977_SAI_CTRL0_FS_8000_12000; 253 else if (rate >= 16000 && rate <= 24000) 254 return ADAU1977_SAI_CTRL0_FS_16000_24000; 255 else if (rate >= 32000 && rate <= 48000) 256 return ADAU1977_SAI_CTRL0_FS_32000_48000; 257 else if (rate >= 64000 && rate <= 96000) 258 return ADAU1977_SAI_CTRL0_FS_64000_96000; 259 else if (rate >= 128000 && rate <= 192000) 260 return ADAU1977_SAI_CTRL0_FS_128000_192000; 261 else 262 return -EINVAL; 263 } 264 265 static int adau1977_lookup_mcs(struct adau1977 *adau1977, unsigned int rate, 266 unsigned int fs) 267 { 268 unsigned int mcs; 269 270 /* 271 * rate = sysclk / (512 * mcs_lut[mcs]) * 2**fs 272 * => mcs_lut[mcs] = sysclk / (512 * rate) * 2**fs 273 * => mcs_lut[mcs] = sysclk / ((512 / 2**fs) * rate) 274 */ 275 276 rate *= 512 >> fs; 277 278 if (adau1977->sysclk % rate != 0) 279 return -EINVAL; 280 281 mcs = adau1977->sysclk / rate; 282 283 /* The factors configured by MCS are 1, 2, 3, 4, 6 */ 284 if (mcs < 1 || mcs > 6 || mcs == 5) 285 return -EINVAL; 286 287 mcs = mcs - 1; 288 if (mcs == 5) 289 mcs = 4; 290 291 return mcs; 292 } 293 294 static int adau1977_hw_params(struct snd_pcm_substream *substream, 295 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 296 { 297 struct snd_soc_codec *codec = dai->codec; 298 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(codec); 299 unsigned int rate = params_rate(params); 300 unsigned int slot_width; 301 unsigned int ctrl0, ctrl0_mask; 302 unsigned int ctrl1; 303 int mcs, fs; 304 int ret; 305 306 fs = adau1977_lookup_fs(rate); 307 if (fs < 0) 308 return fs; 309 310 if (adau1977->sysclk_src == ADAU1977_SYSCLK_SRC_MCLK) { 311 mcs = adau1977_lookup_mcs(adau1977, rate, fs); 312 if (mcs < 0) 313 return mcs; 314 } else { 315 mcs = 0; 316 } 317 318 ctrl0_mask = ADAU1977_SAI_CTRL0_FS_MASK; 319 ctrl0 = fs; 320 321 if (adau1977->right_j) { 322 switch (params_width(params)) { 323 case 16: 324 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_16BIT; 325 break; 326 case 24: 327 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_24BIT; 328 break; 329 default: 330 return -EINVAL; 331 } 332 ctrl0_mask |= ADAU1977_SAI_CTRL0_FMT_MASK; 333 } 334 335 if (adau1977->master) { 336 switch (params_width(params)) { 337 case 16: 338 ctrl1 = ADAU1977_SAI_CTRL1_DATA_WIDTH_16BIT; 339 slot_width = 16; 340 break; 341 case 24: 342 case 32: 343 ctrl1 = ADAU1977_SAI_CTRL1_DATA_WIDTH_24BIT; 344 slot_width = 32; 345 break; 346 default: 347 return -EINVAL; 348 } 349 350 /* In TDM mode there is a fixed slot width */ 351 if (adau1977->slot_width) 352 slot_width = adau1977->slot_width; 353 354 if (slot_width == 16) 355 ctrl1 |= ADAU1977_SAI_CTRL1_BCLKRATE_16; 356 else 357 ctrl1 |= ADAU1977_SAI_CTRL1_BCLKRATE_32; 358 359 ret = regmap_update_bits(adau1977->regmap, 360 ADAU1977_REG_SAI_CTRL1, 361 ADAU1977_SAI_CTRL1_DATA_WIDTH_MASK | 362 ADAU1977_SAI_CTRL1_BCLKRATE_MASK, 363 ctrl1); 364 if (ret < 0) 365 return ret; 366 } 367 368 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0, 369 ctrl0_mask, ctrl0); 370 if (ret < 0) 371 return ret; 372 373 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_PLL, 374 ADAU1977_PLL_MCS_MASK, mcs); 375 } 376 377 static int adau1977_power_disable(struct adau1977 *adau1977) 378 { 379 int ret = 0; 380 381 if (!adau1977->enabled) 382 return 0; 383 384 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_POWER, 385 ADAU1977_POWER_PWUP, 0); 386 if (ret) 387 return ret; 388 389 regcache_mark_dirty(adau1977->regmap); 390 391 if (adau1977->reset_gpio) 392 gpiod_set_value_cansleep(adau1977->reset_gpio, 0); 393 394 regcache_cache_only(adau1977->regmap, true); 395 396 regulator_disable(adau1977->avdd_reg); 397 if (adau1977->dvdd_reg) 398 regulator_disable(adau1977->dvdd_reg); 399 400 adau1977->enabled = false; 401 402 return 0; 403 } 404 405 static int adau1977_power_enable(struct adau1977 *adau1977) 406 { 407 unsigned int val; 408 int ret = 0; 409 410 if (adau1977->enabled) 411 return 0; 412 413 ret = regulator_enable(adau1977->avdd_reg); 414 if (ret) 415 return ret; 416 417 if (adau1977->dvdd_reg) { 418 ret = regulator_enable(adau1977->dvdd_reg); 419 if (ret) 420 goto err_disable_avdd; 421 } 422 423 if (adau1977->reset_gpio) 424 gpiod_set_value_cansleep(adau1977->reset_gpio, 1); 425 426 regcache_cache_only(adau1977->regmap, false); 427 428 if (adau1977->switch_mode) 429 adau1977->switch_mode(adau1977->dev); 430 431 ret = adau1977_reset(adau1977); 432 if (ret) 433 goto err_disable_dvdd; 434 435 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_POWER, 436 ADAU1977_POWER_PWUP, ADAU1977_POWER_PWUP); 437 if (ret) 438 goto err_disable_dvdd; 439 440 ret = regcache_sync(adau1977->regmap); 441 if (ret) 442 goto err_disable_dvdd; 443 444 /* 445 * The PLL register is not affected by the software reset. It is 446 * possible that the value of the register was changed to the 447 * default value while we were in cache only mode. In this case 448 * regcache_sync will skip over it and we have to manually sync 449 * it. 450 */ 451 ret = regmap_read(adau1977->regmap, ADAU1977_REG_PLL, &val); 452 if (ret) 453 goto err_disable_dvdd; 454 455 if (val == 0x41) { 456 regcache_cache_bypass(adau1977->regmap, true); 457 ret = regmap_write(adau1977->regmap, ADAU1977_REG_PLL, 458 0x41); 459 if (ret) 460 goto err_disable_dvdd; 461 regcache_cache_bypass(adau1977->regmap, false); 462 } 463 464 adau1977->enabled = true; 465 466 return ret; 467 468 err_disable_dvdd: 469 if (adau1977->dvdd_reg) 470 regulator_disable(adau1977->dvdd_reg); 471 err_disable_avdd: 472 regulator_disable(adau1977->avdd_reg); 473 return ret; 474 } 475 476 static int adau1977_set_bias_level(struct snd_soc_codec *codec, 477 enum snd_soc_bias_level level) 478 { 479 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(codec); 480 int ret = 0; 481 482 switch (level) { 483 case SND_SOC_BIAS_ON: 484 break; 485 case SND_SOC_BIAS_PREPARE: 486 break; 487 case SND_SOC_BIAS_STANDBY: 488 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) 489 ret = adau1977_power_enable(adau1977); 490 break; 491 case SND_SOC_BIAS_OFF: 492 ret = adau1977_power_disable(adau1977); 493 break; 494 } 495 496 if (ret) 497 return ret; 498 499 codec->dapm.bias_level = level; 500 501 return 0; 502 } 503 504 static int adau1977_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, 505 unsigned int rx_mask, int slots, int width) 506 { 507 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec); 508 unsigned int ctrl0, ctrl1, drv; 509 unsigned int slot[4]; 510 unsigned int i; 511 int ret; 512 513 if (slots == 0) { 514 /* 0 = No fixed slot width */ 515 adau1977->slot_width = 0; 516 adau1977->max_master_fs = 192000; 517 return regmap_update_bits(adau1977->regmap, 518 ADAU1977_REG_SAI_CTRL0, ADAU1977_SAI_CTRL0_SAI_MASK, 519 ADAU1977_SAI_CTRL0_SAI_I2S); 520 } 521 522 if (rx_mask == 0 || tx_mask != 0) 523 return -EINVAL; 524 525 drv = 0; 526 for (i = 0; i < 4; i++) { 527 slot[i] = __ffs(rx_mask); 528 drv |= ADAU1977_SAI_OVERTEMP_DRV_C(i); 529 rx_mask &= ~(1 << slot[i]); 530 if (slot[i] >= slots) 531 return -EINVAL; 532 if (rx_mask == 0) 533 break; 534 } 535 536 if (rx_mask != 0) 537 return -EINVAL; 538 539 switch (width) { 540 case 16: 541 ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_16; 542 break; 543 case 24: 544 /* We can only generate 16 bit or 32 bit wide slots */ 545 if (adau1977->master) 546 return -EINVAL; 547 ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_24; 548 break; 549 case 32: 550 ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_32; 551 break; 552 default: 553 return -EINVAL; 554 } 555 556 switch (slots) { 557 case 2: 558 ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_2; 559 break; 560 case 4: 561 ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_4; 562 break; 563 case 8: 564 ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_8; 565 break; 566 case 16: 567 ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_16; 568 break; 569 default: 570 return -EINVAL; 571 } 572 573 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_OVERTEMP, 574 ADAU1977_SAI_OVERTEMP_DRV_C(0) | 575 ADAU1977_SAI_OVERTEMP_DRV_C(1) | 576 ADAU1977_SAI_OVERTEMP_DRV_C(2) | 577 ADAU1977_SAI_OVERTEMP_DRV_C(3), drv); 578 if (ret) 579 return ret; 580 581 ret = regmap_write(adau1977->regmap, ADAU1977_REG_CMAP12, 582 (slot[1] << ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET) | 583 (slot[0] << ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET)); 584 if (ret) 585 return ret; 586 587 ret = regmap_write(adau1977->regmap, ADAU1977_REG_CMAP34, 588 (slot[3] << ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET) | 589 (slot[2] << ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET)); 590 if (ret) 591 return ret; 592 593 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0, 594 ADAU1977_SAI_CTRL0_SAI_MASK, ctrl0); 595 if (ret) 596 return ret; 597 598 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL1, 599 ADAU1977_SAI_CTRL1_SLOT_WIDTH_MASK, ctrl1); 600 if (ret) 601 return ret; 602 603 adau1977->slot_width = width; 604 605 /* In master mode the maximum bitclock is 24.576 MHz */ 606 adau1977->max_master_fs = min(192000, 24576000 / width / slots); 607 608 return 0; 609 } 610 611 static int adau1977_mute(struct snd_soc_dai *dai, int mute, int stream) 612 { 613 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec); 614 unsigned int val; 615 616 if (mute) 617 val = ADAU1977_MISC_CONTROL_MMUTE; 618 else 619 val = 0; 620 621 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_MISC_CONTROL, 622 ADAU1977_MISC_CONTROL_MMUTE, val); 623 } 624 625 static int adau1977_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) 626 { 627 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec); 628 unsigned int ctrl0 = 0, ctrl1 = 0, block_power = 0; 629 bool invert_lrclk; 630 int ret; 631 632 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 633 case SND_SOC_DAIFMT_CBS_CFS: 634 adau1977->master = false; 635 break; 636 case SND_SOC_DAIFMT_CBM_CFM: 637 ctrl1 |= ADAU1977_SAI_CTRL1_MASTER; 638 adau1977->master = true; 639 break; 640 default: 641 return -EINVAL; 642 } 643 644 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 645 case SND_SOC_DAIFMT_NB_NF: 646 invert_lrclk = false; 647 break; 648 case SND_SOC_DAIFMT_IB_NF: 649 block_power |= ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE; 650 invert_lrclk = false; 651 break; 652 case SND_SOC_DAIFMT_NB_IF: 653 invert_lrclk = true; 654 break; 655 case SND_SOC_DAIFMT_IB_IF: 656 block_power |= ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE; 657 invert_lrclk = true; 658 break; 659 default: 660 return -EINVAL; 661 } 662 663 adau1977->right_j = false; 664 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 665 case SND_SOC_DAIFMT_I2S: 666 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_I2S; 667 break; 668 case SND_SOC_DAIFMT_LEFT_J: 669 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_LJ; 670 invert_lrclk = !invert_lrclk; 671 break; 672 case SND_SOC_DAIFMT_RIGHT_J: 673 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_24BIT; 674 adau1977->right_j = true; 675 invert_lrclk = !invert_lrclk; 676 break; 677 case SND_SOC_DAIFMT_DSP_A: 678 ctrl1 |= ADAU1977_SAI_CTRL1_LRCLK_PULSE; 679 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_I2S; 680 invert_lrclk = false; 681 break; 682 case SND_SOC_DAIFMT_DSP_B: 683 ctrl1 |= ADAU1977_SAI_CTRL1_LRCLK_PULSE; 684 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_LJ; 685 invert_lrclk = false; 686 break; 687 default: 688 return -EINVAL; 689 } 690 691 if (invert_lrclk) 692 block_power |= ADAU1977_BLOCK_POWER_SAI_LR_POL; 693 694 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_BLOCK_POWER_SAI, 695 ADAU1977_BLOCK_POWER_SAI_LR_POL | 696 ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE, block_power); 697 if (ret) 698 return ret; 699 700 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0, 701 ADAU1977_SAI_CTRL0_FMT_MASK, 702 ctrl0); 703 if (ret) 704 return ret; 705 706 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL1, 707 ADAU1977_SAI_CTRL1_MASTER | ADAU1977_SAI_CTRL1_LRCLK_PULSE, 708 ctrl1); 709 } 710 711 static int adau1977_startup(struct snd_pcm_substream *substream, 712 struct snd_soc_dai *dai) 713 { 714 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec); 715 u64 formats = 0; 716 717 if (adau1977->slot_width == 16) 718 formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE; 719 else if (adau1977->right_j || adau1977->slot_width == 24) 720 formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | 721 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE; 722 723 snd_pcm_hw_constraint_list(substream->runtime, 0, 724 SNDRV_PCM_HW_PARAM_RATE, &adau1977->constraints); 725 726 if (adau1977->master) 727 snd_pcm_hw_constraint_minmax(substream->runtime, 728 SNDRV_PCM_HW_PARAM_RATE, 8000, adau1977->max_master_fs); 729 730 if (formats != 0) 731 snd_pcm_hw_constraint_mask64(substream->runtime, 732 SNDRV_PCM_HW_PARAM_FORMAT, formats); 733 734 return 0; 735 } 736 737 static int adau1977_set_tristate(struct snd_soc_dai *dai, int tristate) 738 { 739 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec); 740 unsigned int val; 741 742 if (tristate) 743 val = ADAU1977_SAI_OVERTEMP_DRV_HIZ; 744 else 745 val = 0; 746 747 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_OVERTEMP, 748 ADAU1977_SAI_OVERTEMP_DRV_HIZ, val); 749 } 750 751 static const struct snd_soc_dai_ops adau1977_dai_ops = { 752 .startup = adau1977_startup, 753 .hw_params = adau1977_hw_params, 754 .mute_stream = adau1977_mute, 755 .set_fmt = adau1977_set_dai_fmt, 756 .set_tdm_slot = adau1977_set_tdm_slot, 757 .set_tristate = adau1977_set_tristate, 758 }; 759 760 static struct snd_soc_dai_driver adau1977_dai = { 761 .name = "adau1977-hifi", 762 .capture = { 763 .stream_name = "Capture", 764 .channels_min = 1, 765 .channels_max = 4, 766 .rates = SNDRV_PCM_RATE_KNOT, 767 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | 768 SNDRV_PCM_FMTBIT_S32_LE, 769 .sig_bits = 24, 770 }, 771 .ops = &adau1977_dai_ops, 772 }; 773 774 static const unsigned int adau1977_rates[] = { 775 8000, 16000, 32000, 64000, 128000, 776 11025, 22050, 44100, 88200, 172400, 777 12000, 24000, 48000, 96000, 192000, 778 }; 779 780 #define ADAU1977_RATE_CONSTRAINT_MASK_32000 0x001f 781 #define ADAU1977_RATE_CONSTRAINT_MASK_44100 0x03e0 782 #define ADAU1977_RATE_CONSTRAINT_MASK_48000 0x7c00 783 /* All rates >= 32000 */ 784 #define ADAU1977_RATE_CONSTRAINT_MASK_LRCLK 0x739c 785 786 static bool adau1977_check_sysclk(unsigned int mclk, unsigned int base_freq) 787 { 788 unsigned int mcs; 789 790 if (mclk % (base_freq * 128) != 0) 791 return false; 792 793 mcs = mclk / (128 * base_freq); 794 if (mcs < 1 || mcs > 6 || mcs == 5) 795 return false; 796 797 return true; 798 } 799 800 static int adau1977_set_sysclk(struct snd_soc_codec *codec, 801 int clk_id, int source, unsigned int freq, int dir) 802 { 803 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(codec); 804 unsigned int mask = 0; 805 unsigned int clk_src; 806 unsigned int ret; 807 808 if (dir != SND_SOC_CLOCK_IN) 809 return -EINVAL; 810 811 if (clk_id != ADAU1977_SYSCLK) 812 return -EINVAL; 813 814 switch (source) { 815 case ADAU1977_SYSCLK_SRC_MCLK: 816 clk_src = 0; 817 break; 818 case ADAU1977_SYSCLK_SRC_LRCLK: 819 clk_src = ADAU1977_PLL_CLK_S; 820 break; 821 default: 822 return -EINVAL; 823 } 824 825 if (freq != 0 && source == ADAU1977_SYSCLK_SRC_MCLK) { 826 if (freq < 4000000 || freq > 36864000) 827 return -EINVAL; 828 829 if (adau1977_check_sysclk(freq, 32000)) 830 mask |= ADAU1977_RATE_CONSTRAINT_MASK_32000; 831 if (adau1977_check_sysclk(freq, 44100)) 832 mask |= ADAU1977_RATE_CONSTRAINT_MASK_44100; 833 if (adau1977_check_sysclk(freq, 48000)) 834 mask |= ADAU1977_RATE_CONSTRAINT_MASK_48000; 835 836 if (mask == 0) 837 return -EINVAL; 838 } else if (source == ADAU1977_SYSCLK_SRC_LRCLK) { 839 mask = ADAU1977_RATE_CONSTRAINT_MASK_LRCLK; 840 } 841 842 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_PLL, 843 ADAU1977_PLL_CLK_S, clk_src); 844 if (ret) 845 return ret; 846 847 adau1977->constraints.mask = mask; 848 adau1977->sysclk_src = source; 849 adau1977->sysclk = freq; 850 851 return 0; 852 } 853 854 static int adau1977_codec_probe(struct snd_soc_codec *codec) 855 { 856 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(codec); 857 int ret; 858 859 switch (adau1977->type) { 860 case ADAU1977: 861 ret = snd_soc_dapm_new_controls(&codec->dapm, 862 adau1977_micbias_dapm_widgets, 863 ARRAY_SIZE(adau1977_micbias_dapm_widgets)); 864 if (ret < 0) 865 return ret; 866 break; 867 default: 868 break; 869 } 870 871 return 0; 872 } 873 874 static struct snd_soc_codec_driver adau1977_codec_driver = { 875 .probe = adau1977_codec_probe, 876 .set_bias_level = adau1977_set_bias_level, 877 .set_sysclk = adau1977_set_sysclk, 878 .idle_bias_off = true, 879 880 .controls = adau1977_snd_controls, 881 .num_controls = ARRAY_SIZE(adau1977_snd_controls), 882 .dapm_widgets = adau1977_dapm_widgets, 883 .num_dapm_widgets = ARRAY_SIZE(adau1977_dapm_widgets), 884 .dapm_routes = adau1977_dapm_routes, 885 .num_dapm_routes = ARRAY_SIZE(adau1977_dapm_routes), 886 }; 887 888 static int adau1977_setup_micbias(struct adau1977 *adau1977) 889 { 890 struct adau1977_platform_data *pdata = adau1977->dev->platform_data; 891 unsigned int micbias; 892 893 if (pdata) { 894 micbias = pdata->micbias; 895 if (micbias > ADAU1977_MICBIAS_9V0) 896 return -EINVAL; 897 898 } else { 899 micbias = ADAU1977_MICBIAS_8V5; 900 } 901 902 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_MICBIAS, 903 ADAU1977_MICBIAS_MB_VOLTS_MASK, 904 micbias << ADAU1977_MICBIAS_MB_VOLTS_OFFSET); 905 } 906 907 int adau1977_probe(struct device *dev, struct regmap *regmap, 908 enum adau1977_type type, void (*switch_mode)(struct device *dev)) 909 { 910 unsigned int power_off_mask; 911 struct adau1977 *adau1977; 912 int ret; 913 914 if (IS_ERR(regmap)) 915 return PTR_ERR(regmap); 916 917 adau1977 = devm_kzalloc(dev, sizeof(*adau1977), GFP_KERNEL); 918 if (adau1977 == NULL) 919 return -ENOMEM; 920 921 adau1977->dev = dev; 922 adau1977->type = type; 923 adau1977->regmap = regmap; 924 adau1977->switch_mode = switch_mode; 925 adau1977->max_master_fs = 192000; 926 927 adau1977->constraints.list = adau1977_rates; 928 adau1977->constraints.count = ARRAY_SIZE(adau1977_rates); 929 930 adau1977->avdd_reg = devm_regulator_get(dev, "AVDD"); 931 if (IS_ERR(adau1977->avdd_reg)) 932 return PTR_ERR(adau1977->avdd_reg); 933 934 adau1977->dvdd_reg = devm_regulator_get_optional(dev, "DVDD"); 935 if (IS_ERR(adau1977->dvdd_reg)) { 936 if (PTR_ERR(adau1977->dvdd_reg) != -ENODEV) 937 return PTR_ERR(adau1977->dvdd_reg); 938 adau1977->dvdd_reg = NULL; 939 } 940 941 adau1977->reset_gpio = devm_gpiod_get(dev, "reset"); 942 if (IS_ERR(adau1977->reset_gpio)) { 943 ret = PTR_ERR(adau1977->reset_gpio); 944 if (ret != -ENOENT && ret != -ENOSYS) 945 return PTR_ERR(adau1977->reset_gpio); 946 adau1977->reset_gpio = NULL; 947 } 948 949 dev_set_drvdata(dev, adau1977); 950 951 if (adau1977->reset_gpio) { 952 ret = gpiod_direction_output(adau1977->reset_gpio, 0); 953 if (ret) 954 return ret; 955 ndelay(100); 956 } 957 958 ret = adau1977_power_enable(adau1977); 959 if (ret) 960 return ret; 961 962 if (type == ADAU1977) { 963 ret = adau1977_setup_micbias(adau1977); 964 if (ret) 965 goto err_poweroff; 966 } 967 968 if (adau1977->dvdd_reg) 969 power_off_mask = ~0; 970 else 971 power_off_mask = (unsigned int)~ADAU1977_BLOCK_POWER_SAI_LDO_EN; 972 973 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_BLOCK_POWER_SAI, 974 power_off_mask, 0x00); 975 if (ret) 976 goto err_poweroff; 977 978 ret = adau1977_power_disable(adau1977); 979 if (ret) 980 return ret; 981 982 return snd_soc_register_codec(dev, &adau1977_codec_driver, 983 &adau1977_dai, 1); 984 985 err_poweroff: 986 adau1977_power_disable(adau1977); 987 return ret; 988 989 } 990 EXPORT_SYMBOL_GPL(adau1977_probe); 991 992 static bool adau1977_register_volatile(struct device *dev, unsigned int reg) 993 { 994 switch (reg) { 995 case ADAU1977_REG_STATUS(0): 996 case ADAU1977_REG_STATUS(1): 997 case ADAU1977_REG_STATUS(2): 998 case ADAU1977_REG_STATUS(3): 999 case ADAU1977_REG_ADC_CLIP: 1000 return true; 1001 } 1002 1003 return false; 1004 } 1005 1006 const struct regmap_config adau1977_regmap_config = { 1007 .max_register = ADAU1977_REG_DC_HPF_CAL, 1008 .volatile_reg = adau1977_register_volatile, 1009 1010 .cache_type = REGCACHE_RBTREE, 1011 .reg_defaults = adau1977_reg_defaults, 1012 .num_reg_defaults = ARRAY_SIZE(adau1977_reg_defaults), 1013 }; 1014 EXPORT_SYMBOL_GPL(adau1977_regmap_config); 1015 1016 MODULE_DESCRIPTION("ASoC ADAU1977/ADAU1978/ADAU1979 driver"); 1017 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 1018 MODULE_LICENSE("GPL"); 1019