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 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 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 (snd_soc_codec_get_bias_level(codec) == 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 return ret; 497 } 498 499 static int adau1977_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, 500 unsigned int rx_mask, int slots, int width) 501 { 502 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec); 503 unsigned int ctrl0, ctrl1, drv; 504 unsigned int slot[4]; 505 unsigned int i; 506 int ret; 507 508 if (slots == 0) { 509 /* 0 = No fixed slot width */ 510 adau1977->slot_width = 0; 511 adau1977->max_master_fs = 192000; 512 return regmap_update_bits(adau1977->regmap, 513 ADAU1977_REG_SAI_CTRL0, ADAU1977_SAI_CTRL0_SAI_MASK, 514 ADAU1977_SAI_CTRL0_SAI_I2S); 515 } 516 517 if (rx_mask == 0 || tx_mask != 0) 518 return -EINVAL; 519 520 drv = 0; 521 for (i = 0; i < 4; i++) { 522 slot[i] = __ffs(rx_mask); 523 drv |= ADAU1977_SAI_OVERTEMP_DRV_C(i); 524 rx_mask &= ~(1 << slot[i]); 525 if (slot[i] >= slots) 526 return -EINVAL; 527 if (rx_mask == 0) 528 break; 529 } 530 531 if (rx_mask != 0) 532 return -EINVAL; 533 534 switch (width) { 535 case 16: 536 ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_16; 537 break; 538 case 24: 539 /* We can only generate 16 bit or 32 bit wide slots */ 540 if (adau1977->master) 541 return -EINVAL; 542 ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_24; 543 break; 544 case 32: 545 ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_32; 546 break; 547 default: 548 return -EINVAL; 549 } 550 551 switch (slots) { 552 case 2: 553 ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_2; 554 break; 555 case 4: 556 ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_4; 557 break; 558 case 8: 559 ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_8; 560 break; 561 case 16: 562 ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_16; 563 break; 564 default: 565 return -EINVAL; 566 } 567 568 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_OVERTEMP, 569 ADAU1977_SAI_OVERTEMP_DRV_C(0) | 570 ADAU1977_SAI_OVERTEMP_DRV_C(1) | 571 ADAU1977_SAI_OVERTEMP_DRV_C(2) | 572 ADAU1977_SAI_OVERTEMP_DRV_C(3), drv); 573 if (ret) 574 return ret; 575 576 ret = regmap_write(adau1977->regmap, ADAU1977_REG_CMAP12, 577 (slot[1] << ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET) | 578 (slot[0] << ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET)); 579 if (ret) 580 return ret; 581 582 ret = regmap_write(adau1977->regmap, ADAU1977_REG_CMAP34, 583 (slot[3] << ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET) | 584 (slot[2] << ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET)); 585 if (ret) 586 return ret; 587 588 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0, 589 ADAU1977_SAI_CTRL0_SAI_MASK, ctrl0); 590 if (ret) 591 return ret; 592 593 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL1, 594 ADAU1977_SAI_CTRL1_SLOT_WIDTH_MASK, ctrl1); 595 if (ret) 596 return ret; 597 598 adau1977->slot_width = width; 599 600 /* In master mode the maximum bitclock is 24.576 MHz */ 601 adau1977->max_master_fs = min(192000, 24576000 / width / slots); 602 603 return 0; 604 } 605 606 static int adau1977_mute(struct snd_soc_dai *dai, int mute, int stream) 607 { 608 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec); 609 unsigned int val; 610 611 if (mute) 612 val = ADAU1977_MISC_CONTROL_MMUTE; 613 else 614 val = 0; 615 616 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_MISC_CONTROL, 617 ADAU1977_MISC_CONTROL_MMUTE, val); 618 } 619 620 static int adau1977_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) 621 { 622 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec); 623 unsigned int ctrl0 = 0, ctrl1 = 0, block_power = 0; 624 bool invert_lrclk; 625 int ret; 626 627 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 628 case SND_SOC_DAIFMT_CBS_CFS: 629 adau1977->master = false; 630 break; 631 case SND_SOC_DAIFMT_CBM_CFM: 632 ctrl1 |= ADAU1977_SAI_CTRL1_MASTER; 633 adau1977->master = true; 634 break; 635 default: 636 return -EINVAL; 637 } 638 639 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 640 case SND_SOC_DAIFMT_NB_NF: 641 invert_lrclk = false; 642 break; 643 case SND_SOC_DAIFMT_IB_NF: 644 block_power |= ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE; 645 invert_lrclk = false; 646 break; 647 case SND_SOC_DAIFMT_NB_IF: 648 invert_lrclk = true; 649 break; 650 case SND_SOC_DAIFMT_IB_IF: 651 block_power |= ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE; 652 invert_lrclk = true; 653 break; 654 default: 655 return -EINVAL; 656 } 657 658 adau1977->right_j = false; 659 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 660 case SND_SOC_DAIFMT_I2S: 661 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_I2S; 662 break; 663 case SND_SOC_DAIFMT_LEFT_J: 664 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_LJ; 665 invert_lrclk = !invert_lrclk; 666 break; 667 case SND_SOC_DAIFMT_RIGHT_J: 668 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_24BIT; 669 adau1977->right_j = true; 670 invert_lrclk = !invert_lrclk; 671 break; 672 case SND_SOC_DAIFMT_DSP_A: 673 ctrl1 |= ADAU1977_SAI_CTRL1_LRCLK_PULSE; 674 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_I2S; 675 invert_lrclk = false; 676 break; 677 case SND_SOC_DAIFMT_DSP_B: 678 ctrl1 |= ADAU1977_SAI_CTRL1_LRCLK_PULSE; 679 ctrl0 |= ADAU1977_SAI_CTRL0_FMT_LJ; 680 invert_lrclk = false; 681 break; 682 default: 683 return -EINVAL; 684 } 685 686 if (invert_lrclk) 687 block_power |= ADAU1977_BLOCK_POWER_SAI_LR_POL; 688 689 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_BLOCK_POWER_SAI, 690 ADAU1977_BLOCK_POWER_SAI_LR_POL | 691 ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE, block_power); 692 if (ret) 693 return ret; 694 695 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0, 696 ADAU1977_SAI_CTRL0_FMT_MASK, 697 ctrl0); 698 if (ret) 699 return ret; 700 701 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL1, 702 ADAU1977_SAI_CTRL1_MASTER | ADAU1977_SAI_CTRL1_LRCLK_PULSE, 703 ctrl1); 704 } 705 706 static int adau1977_startup(struct snd_pcm_substream *substream, 707 struct snd_soc_dai *dai) 708 { 709 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec); 710 u64 formats = 0; 711 712 if (adau1977->slot_width == 16) 713 formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE; 714 else if (adau1977->right_j || adau1977->slot_width == 24) 715 formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | 716 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE; 717 718 snd_pcm_hw_constraint_list(substream->runtime, 0, 719 SNDRV_PCM_HW_PARAM_RATE, &adau1977->constraints); 720 721 if (adau1977->master) 722 snd_pcm_hw_constraint_minmax(substream->runtime, 723 SNDRV_PCM_HW_PARAM_RATE, 8000, adau1977->max_master_fs); 724 725 if (formats != 0) 726 snd_pcm_hw_constraint_mask64(substream->runtime, 727 SNDRV_PCM_HW_PARAM_FORMAT, formats); 728 729 return 0; 730 } 731 732 static int adau1977_set_tristate(struct snd_soc_dai *dai, int tristate) 733 { 734 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec); 735 unsigned int val; 736 737 if (tristate) 738 val = ADAU1977_SAI_OVERTEMP_DRV_HIZ; 739 else 740 val = 0; 741 742 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_OVERTEMP, 743 ADAU1977_SAI_OVERTEMP_DRV_HIZ, val); 744 } 745 746 static const struct snd_soc_dai_ops adau1977_dai_ops = { 747 .startup = adau1977_startup, 748 .hw_params = adau1977_hw_params, 749 .mute_stream = adau1977_mute, 750 .set_fmt = adau1977_set_dai_fmt, 751 .set_tdm_slot = adau1977_set_tdm_slot, 752 .set_tristate = adau1977_set_tristate, 753 }; 754 755 static struct snd_soc_dai_driver adau1977_dai = { 756 .name = "adau1977-hifi", 757 .capture = { 758 .stream_name = "Capture", 759 .channels_min = 1, 760 .channels_max = 4, 761 .rates = SNDRV_PCM_RATE_KNOT, 762 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | 763 SNDRV_PCM_FMTBIT_S32_LE, 764 .sig_bits = 24, 765 }, 766 .ops = &adau1977_dai_ops, 767 }; 768 769 static const unsigned int adau1977_rates[] = { 770 8000, 16000, 32000, 64000, 128000, 771 11025, 22050, 44100, 88200, 172400, 772 12000, 24000, 48000, 96000, 192000, 773 }; 774 775 #define ADAU1977_RATE_CONSTRAINT_MASK_32000 0x001f 776 #define ADAU1977_RATE_CONSTRAINT_MASK_44100 0x03e0 777 #define ADAU1977_RATE_CONSTRAINT_MASK_48000 0x7c00 778 /* All rates >= 32000 */ 779 #define ADAU1977_RATE_CONSTRAINT_MASK_LRCLK 0x739c 780 781 static bool adau1977_check_sysclk(unsigned int mclk, unsigned int base_freq) 782 { 783 unsigned int mcs; 784 785 if (mclk % (base_freq * 128) != 0) 786 return false; 787 788 mcs = mclk / (128 * base_freq); 789 if (mcs < 1 || mcs > 6 || mcs == 5) 790 return false; 791 792 return true; 793 } 794 795 static int adau1977_set_sysclk(struct snd_soc_codec *codec, 796 int clk_id, int source, unsigned int freq, int dir) 797 { 798 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(codec); 799 unsigned int mask = 0; 800 unsigned int clk_src; 801 unsigned int ret; 802 803 if (dir != SND_SOC_CLOCK_IN) 804 return -EINVAL; 805 806 if (clk_id != ADAU1977_SYSCLK) 807 return -EINVAL; 808 809 switch (source) { 810 case ADAU1977_SYSCLK_SRC_MCLK: 811 clk_src = 0; 812 break; 813 case ADAU1977_SYSCLK_SRC_LRCLK: 814 clk_src = ADAU1977_PLL_CLK_S; 815 break; 816 default: 817 return -EINVAL; 818 } 819 820 if (freq != 0 && source == ADAU1977_SYSCLK_SRC_MCLK) { 821 if (freq < 4000000 || freq > 36864000) 822 return -EINVAL; 823 824 if (adau1977_check_sysclk(freq, 32000)) 825 mask |= ADAU1977_RATE_CONSTRAINT_MASK_32000; 826 if (adau1977_check_sysclk(freq, 44100)) 827 mask |= ADAU1977_RATE_CONSTRAINT_MASK_44100; 828 if (adau1977_check_sysclk(freq, 48000)) 829 mask |= ADAU1977_RATE_CONSTRAINT_MASK_48000; 830 831 if (mask == 0) 832 return -EINVAL; 833 } else if (source == ADAU1977_SYSCLK_SRC_LRCLK) { 834 mask = ADAU1977_RATE_CONSTRAINT_MASK_LRCLK; 835 } 836 837 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_PLL, 838 ADAU1977_PLL_CLK_S, clk_src); 839 if (ret) 840 return ret; 841 842 adau1977->constraints.mask = mask; 843 adau1977->sysclk_src = source; 844 adau1977->sysclk = freq; 845 846 return 0; 847 } 848 849 static int adau1977_codec_probe(struct snd_soc_codec *codec) 850 { 851 struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec); 852 struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(codec); 853 int ret; 854 855 switch (adau1977->type) { 856 case ADAU1977: 857 ret = snd_soc_dapm_new_controls(dapm, 858 adau1977_micbias_dapm_widgets, 859 ARRAY_SIZE(adau1977_micbias_dapm_widgets)); 860 if (ret < 0) 861 return ret; 862 break; 863 default: 864 break; 865 } 866 867 return 0; 868 } 869 870 static const struct snd_soc_codec_driver adau1977_codec_driver = { 871 .probe = adau1977_codec_probe, 872 .set_bias_level = adau1977_set_bias_level, 873 .set_sysclk = adau1977_set_sysclk, 874 .idle_bias_off = true, 875 876 .component_driver = { 877 .controls = adau1977_snd_controls, 878 .num_controls = ARRAY_SIZE(adau1977_snd_controls), 879 .dapm_widgets = adau1977_dapm_widgets, 880 .num_dapm_widgets = ARRAY_SIZE(adau1977_dapm_widgets), 881 .dapm_routes = adau1977_dapm_routes, 882 .num_dapm_routes = ARRAY_SIZE(adau1977_dapm_routes), 883 }, 884 }; 885 886 static int adau1977_setup_micbias(struct adau1977 *adau1977) 887 { 888 struct adau1977_platform_data *pdata = adau1977->dev->platform_data; 889 unsigned int micbias; 890 891 if (pdata) { 892 micbias = pdata->micbias; 893 if (micbias > ADAU1977_MICBIAS_9V0) 894 return -EINVAL; 895 896 } else { 897 micbias = ADAU1977_MICBIAS_8V5; 898 } 899 900 return regmap_update_bits(adau1977->regmap, ADAU1977_REG_MICBIAS, 901 ADAU1977_MICBIAS_MB_VOLTS_MASK, 902 micbias << ADAU1977_MICBIAS_MB_VOLTS_OFFSET); 903 } 904 905 int adau1977_probe(struct device *dev, struct regmap *regmap, 906 enum adau1977_type type, void (*switch_mode)(struct device *dev)) 907 { 908 unsigned int power_off_mask; 909 struct adau1977 *adau1977; 910 int ret; 911 912 if (IS_ERR(regmap)) 913 return PTR_ERR(regmap); 914 915 adau1977 = devm_kzalloc(dev, sizeof(*adau1977), GFP_KERNEL); 916 if (adau1977 == NULL) 917 return -ENOMEM; 918 919 adau1977->dev = dev; 920 adau1977->type = type; 921 adau1977->regmap = regmap; 922 adau1977->switch_mode = switch_mode; 923 adau1977->max_master_fs = 192000; 924 925 adau1977->constraints.list = adau1977_rates; 926 adau1977->constraints.count = ARRAY_SIZE(adau1977_rates); 927 928 adau1977->avdd_reg = devm_regulator_get(dev, "AVDD"); 929 if (IS_ERR(adau1977->avdd_reg)) 930 return PTR_ERR(adau1977->avdd_reg); 931 932 adau1977->dvdd_reg = devm_regulator_get_optional(dev, "DVDD"); 933 if (IS_ERR(adau1977->dvdd_reg)) { 934 if (PTR_ERR(adau1977->dvdd_reg) != -ENODEV) 935 return PTR_ERR(adau1977->dvdd_reg); 936 adau1977->dvdd_reg = NULL; 937 } 938 939 adau1977->reset_gpio = devm_gpiod_get_optional(dev, "reset", 940 GPIOD_OUT_LOW); 941 if (IS_ERR(adau1977->reset_gpio)) 942 return PTR_ERR(adau1977->reset_gpio); 943 944 dev_set_drvdata(dev, adau1977); 945 946 if (adau1977->reset_gpio) 947 ndelay(100); 948 949 ret = adau1977_power_enable(adau1977); 950 if (ret) 951 return ret; 952 953 if (type == ADAU1977) { 954 ret = adau1977_setup_micbias(adau1977); 955 if (ret) 956 goto err_poweroff; 957 } 958 959 if (adau1977->dvdd_reg) 960 power_off_mask = ~0; 961 else 962 power_off_mask = (unsigned int)~ADAU1977_BLOCK_POWER_SAI_LDO_EN; 963 964 ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_BLOCK_POWER_SAI, 965 power_off_mask, 0x00); 966 if (ret) 967 goto err_poweroff; 968 969 ret = adau1977_power_disable(adau1977); 970 if (ret) 971 return ret; 972 973 return snd_soc_register_codec(dev, &adau1977_codec_driver, 974 &adau1977_dai, 1); 975 976 err_poweroff: 977 adau1977_power_disable(adau1977); 978 return ret; 979 980 } 981 EXPORT_SYMBOL_GPL(adau1977_probe); 982 983 static bool adau1977_register_volatile(struct device *dev, unsigned int reg) 984 { 985 switch (reg) { 986 case ADAU1977_REG_STATUS(0): 987 case ADAU1977_REG_STATUS(1): 988 case ADAU1977_REG_STATUS(2): 989 case ADAU1977_REG_STATUS(3): 990 case ADAU1977_REG_ADC_CLIP: 991 return true; 992 } 993 994 return false; 995 } 996 997 const struct regmap_config adau1977_regmap_config = { 998 .max_register = ADAU1977_REG_DC_HPF_CAL, 999 .volatile_reg = adau1977_register_volatile, 1000 1001 .cache_type = REGCACHE_RBTREE, 1002 .reg_defaults = adau1977_reg_defaults, 1003 .num_reg_defaults = ARRAY_SIZE(adau1977_reg_defaults), 1004 }; 1005 EXPORT_SYMBOL_GPL(adau1977_regmap_config); 1006 1007 MODULE_DESCRIPTION("ASoC ADAU1977/ADAU1978/ADAU1979 driver"); 1008 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 1009 MODULE_LICENSE("GPL"); 1010