1 // SPDX-License-Identifier: BSD-3-Clause 2 /* 3 * Copyright (c) 2016-2020, STMicroelectronics - All Rights Reserved 4 */ 5 6 #include <assert.h> 7 #include <drivers/stpmic1.h> 8 #include <kernel/panic.h> 9 #include <platform_config.h> 10 #include <stdint.h> 11 #include <string.h> 12 #include <trace.h> 13 #include <util.h> 14 15 struct regul_struct { 16 const char *dt_node_name; 17 const uint16_t *voltage_table; 18 uint8_t voltage_table_size; 19 uint8_t control_reg; 20 uint8_t low_power_reg; 21 uint8_t enable_pos; 22 uint8_t pull_down_reg; 23 uint8_t pull_down_pos; 24 uint8_t mask_reset_reg; 25 uint8_t mask_reset_pos; 26 }; 27 28 static struct i2c_handle_s *pmic_i2c_handle; 29 static uint16_t pmic_i2c_addr; 30 31 /* Voltage tables in mV */ 32 static const uint16_t buck1_voltage_table[] = { 33 725, 34 725, 35 725, 36 725, 37 725, 38 725, 39 750, 40 775, 41 800, 42 825, 43 850, 44 875, 45 900, 46 925, 47 950, 48 975, 49 1000, 50 1025, 51 1050, 52 1075, 53 1100, 54 1125, 55 1150, 56 1175, 57 1200, 58 1225, 59 1250, 60 1275, 61 1300, 62 1325, 63 1350, 64 1375, 65 1400, 66 1425, 67 1450, 68 1475, 69 1500, 70 1500, 71 1500, 72 1500, 73 1500, 74 1500, 75 1500, 76 1500, 77 1500, 78 1500, 79 1500, 80 1500, 81 1500, 82 1500, 83 1500, 84 1500, 85 1500, 86 1500, 87 1500, 88 1500, 89 1500, 90 1500, 91 1500, 92 1500, 93 1500, 94 1500, 95 1500, 96 1500, 97 }; 98 99 static const uint16_t buck2_voltage_table[] = { 100 1000, 101 1000, 102 1000, 103 1000, 104 1000, 105 1000, 106 1000, 107 1000, 108 1000, 109 1000, 110 1000, 111 1000, 112 1000, 113 1000, 114 1000, 115 1000, 116 1000, 117 1000, 118 1050, 119 1050, 120 1100, 121 1100, 122 1150, 123 1150, 124 1200, 125 1200, 126 1250, 127 1250, 128 1300, 129 1300, 130 1350, 131 1350, 132 1400, 133 1400, 134 1450, 135 1450, 136 1500, 137 }; 138 139 static const uint16_t buck3_voltage_table[] = { 140 1000, 141 1000, 142 1000, 143 1000, 144 1000, 145 1000, 146 1000, 147 1000, 148 1000, 149 1000, 150 1000, 151 1000, 152 1000, 153 1000, 154 1000, 155 1000, 156 1000, 157 1000, 158 1000, 159 1000, 160 1100, 161 1100, 162 1100, 163 1100, 164 1200, 165 1200, 166 1200, 167 1200, 168 1300, 169 1300, 170 1300, 171 1300, 172 1400, 173 1400, 174 1400, 175 1400, 176 1500, 177 1600, 178 1700, 179 1800, 180 1900, 181 2000, 182 2100, 183 2200, 184 2300, 185 2400, 186 2500, 187 2600, 188 2700, 189 2800, 190 2900, 191 3000, 192 3100, 193 3200, 194 3300, 195 3400, 196 }; 197 198 static const uint16_t buck4_voltage_table[] = { 199 600, 200 625, 201 650, 202 675, 203 700, 204 725, 205 750, 206 775, 207 800, 208 825, 209 850, 210 875, 211 900, 212 925, 213 950, 214 975, 215 1000, 216 1025, 217 1050, 218 1075, 219 1100, 220 1125, 221 1150, 222 1175, 223 1200, 224 1225, 225 1250, 226 1275, 227 1300, 228 1300, 229 1350, 230 1350, 231 1400, 232 1400, 233 1450, 234 1450, 235 1500, 236 1600, 237 1700, 238 1800, 239 1900, 240 2000, 241 2100, 242 2200, 243 2300, 244 2400, 245 2500, 246 2600, 247 2700, 248 2800, 249 2900, 250 3000, 251 3100, 252 3200, 253 3300, 254 3400, 255 3500, 256 3600, 257 3700, 258 3800, 259 3900, 260 }; 261 262 static const uint16_t ldo1_voltage_table[] = { 263 1700, 264 1700, 265 1700, 266 1700, 267 1700, 268 1700, 269 1700, 270 1700, 271 1700, 272 1800, 273 1900, 274 2000, 275 2100, 276 2200, 277 2300, 278 2400, 279 2500, 280 2600, 281 2700, 282 2800, 283 2900, 284 3000, 285 3100, 286 3200, 287 3300, 288 }; 289 290 static const uint16_t ldo2_voltage_table[] = { 291 1700, 292 1700, 293 1700, 294 1700, 295 1700, 296 1700, 297 1700, 298 1700, 299 1700, 300 1800, 301 1900, 302 2000, 303 2100, 304 2200, 305 2300, 306 2400, 307 2500, 308 2600, 309 2700, 310 2800, 311 2900, 312 3000, 313 3100, 314 3200, 315 3300, 316 }; 317 318 static const uint16_t ldo3_voltage_table[] = { 319 1700, 320 1700, 321 1700, 322 1700, 323 1700, 324 1700, 325 1700, 326 1700, 327 1700, 328 1800, 329 1900, 330 2000, 331 2100, 332 2200, 333 2300, 334 2400, 335 2500, 336 2600, 337 2700, 338 2800, 339 2900, 340 3000, 341 3100, 342 3200, 343 3300, 344 3300, 345 3300, 346 3300, 347 3300, 348 3300, 349 3300, 350 500, /* VOUT2/2 (Sink/source mode) */ 351 0xFFFF, /* VREFDDR */ 352 }; 353 354 static const uint16_t ldo5_voltage_table[] = { 355 1700, 356 1700, 357 1700, 358 1700, 359 1700, 360 1700, 361 1700, 362 1700, 363 1700, 364 1800, 365 1900, 366 2000, 367 2100, 368 2200, 369 2300, 370 2400, 371 2500, 372 2600, 373 2700, 374 2800, 375 2900, 376 3000, 377 3100, 378 3200, 379 3300, 380 3400, 381 3500, 382 3600, 383 3700, 384 3800, 385 3900, 386 }; 387 388 static const uint16_t ldo6_voltage_table[] = { 389 900, 390 1000, 391 1100, 392 1200, 393 1300, 394 1400, 395 1500, 396 1600, 397 1700, 398 1800, 399 1900, 400 2000, 401 2100, 402 2200, 403 2300, 404 2400, 405 2500, 406 2600, 407 2700, 408 2800, 409 2900, 410 3000, 411 3100, 412 3200, 413 3300, 414 }; 415 416 static const uint16_t ldo4_voltage_table[] = { 417 3300, 418 }; 419 420 static const uint16_t vref_ddr_voltage_table[] = { 421 3300, 422 }; 423 424 static const uint16_t fixed_5v_voltage_table[] = { 425 5000, 426 }; 427 428 /* Table of Regulators in PMIC SoC */ 429 static const struct regul_struct regulators_table[] = { 430 { 431 .dt_node_name = "buck1", 432 .voltage_table = buck1_voltage_table, 433 .voltage_table_size = ARRAY_SIZE(buck1_voltage_table), 434 .control_reg = BUCK1_CONTROL_REG, 435 .low_power_reg = BUCK1_PWRCTRL_REG, 436 .enable_pos = LDO_BUCK_ENABLE_POS, 437 .pull_down_reg = BUCK_PULL_DOWN_REG, 438 .pull_down_pos = BUCK1_PULL_DOWN_SHIFT, 439 .mask_reset_reg = MASK_RESET_BUCK_REG, 440 .mask_reset_pos = BUCK1_MASK_RESET_SHIFT, 441 }, 442 { 443 .dt_node_name = "buck2", 444 .voltage_table = buck2_voltage_table, 445 .voltage_table_size = ARRAY_SIZE(buck2_voltage_table), 446 .control_reg = BUCK2_CONTROL_REG, 447 .low_power_reg = BUCK2_PWRCTRL_REG, 448 .enable_pos = LDO_BUCK_ENABLE_POS, 449 .pull_down_reg = BUCK_PULL_DOWN_REG, 450 .pull_down_pos = BUCK2_PULL_DOWN_SHIFT, 451 .mask_reset_reg = MASK_RESET_BUCK_REG, 452 .mask_reset_pos = BUCK2_MASK_RESET_SHIFT, 453 }, 454 { 455 .dt_node_name = "buck3", 456 .voltage_table = buck3_voltage_table, 457 .voltage_table_size = ARRAY_SIZE(buck3_voltage_table), 458 .control_reg = BUCK3_CONTROL_REG, 459 .low_power_reg = BUCK3_PWRCTRL_REG, 460 .enable_pos = LDO_BUCK_ENABLE_POS, 461 .pull_down_reg = BUCK_PULL_DOWN_REG, 462 .pull_down_pos = BUCK3_PULL_DOWN_SHIFT, 463 .mask_reset_reg = MASK_RESET_BUCK_REG, 464 .mask_reset_pos = BUCK3_MASK_RESET_SHIFT, 465 }, 466 { 467 .dt_node_name = "buck4", 468 .voltage_table = buck4_voltage_table, 469 .voltage_table_size = ARRAY_SIZE(buck4_voltage_table), 470 .control_reg = BUCK4_CONTROL_REG, 471 .low_power_reg = BUCK4_PWRCTRL_REG, 472 .enable_pos = LDO_BUCK_ENABLE_POS, 473 .pull_down_reg = BUCK_PULL_DOWN_REG, 474 .pull_down_pos = BUCK4_PULL_DOWN_SHIFT, 475 .mask_reset_reg = MASK_RESET_BUCK_REG, 476 .mask_reset_pos = BUCK4_MASK_RESET_SHIFT, 477 }, 478 { 479 .dt_node_name = "ldo1", 480 .voltage_table = ldo1_voltage_table, 481 .voltage_table_size = ARRAY_SIZE(ldo1_voltage_table), 482 .control_reg = LDO1_CONTROL_REG, 483 .low_power_reg = LDO1_PWRCTRL_REG, 484 .enable_pos = LDO_BUCK_ENABLE_POS, 485 .mask_reset_reg = MASK_RESET_LDO_REG, 486 .mask_reset_pos = LDO1_MASK_RESET_SHIFT, 487 }, 488 { 489 .dt_node_name = "ldo2", 490 .voltage_table = ldo2_voltage_table, 491 .voltage_table_size = ARRAY_SIZE(ldo2_voltage_table), 492 .control_reg = LDO2_CONTROL_REG, 493 .low_power_reg = LDO2_PWRCTRL_REG, 494 .enable_pos = LDO_BUCK_ENABLE_POS, 495 .mask_reset_reg = MASK_RESET_LDO_REG, 496 .mask_reset_pos = LDO2_MASK_RESET_SHIFT, 497 }, 498 { 499 .dt_node_name = "ldo3", 500 .voltage_table = ldo3_voltage_table, 501 .voltage_table_size = ARRAY_SIZE(ldo3_voltage_table), 502 .control_reg = LDO3_CONTROL_REG, 503 .low_power_reg = LDO3_PWRCTRL_REG, 504 .enable_pos = LDO_BUCK_ENABLE_POS, 505 .mask_reset_reg = MASK_RESET_LDO_REG, 506 .mask_reset_pos = LDO3_MASK_RESET_SHIFT, 507 }, 508 { 509 .dt_node_name = "ldo4", 510 .voltage_table = ldo4_voltage_table, 511 .voltage_table_size = ARRAY_SIZE(ldo4_voltage_table), 512 .control_reg = LDO4_CONTROL_REG, 513 .low_power_reg = LDO4_PWRCTRL_REG, 514 .enable_pos = LDO_BUCK_ENABLE_POS, 515 .mask_reset_reg = MASK_RESET_LDO_REG, 516 .mask_reset_pos = LDO4_MASK_RESET_SHIFT, 517 }, 518 { 519 .dt_node_name = "ldo5", 520 .voltage_table = ldo5_voltage_table, 521 .voltage_table_size = ARRAY_SIZE(ldo5_voltage_table), 522 .control_reg = LDO5_CONTROL_REG, 523 .low_power_reg = LDO5_PWRCTRL_REG, 524 .enable_pos = LDO_BUCK_ENABLE_POS, 525 .mask_reset_reg = MASK_RESET_LDO_REG, 526 .mask_reset_pos = LDO5_MASK_RESET_SHIFT, 527 }, 528 { 529 .dt_node_name = "ldo6", 530 .voltage_table = ldo6_voltage_table, 531 .voltage_table_size = ARRAY_SIZE(ldo6_voltage_table), 532 .control_reg = LDO6_CONTROL_REG, 533 .low_power_reg = LDO6_PWRCTRL_REG, 534 .enable_pos = LDO_BUCK_ENABLE_POS, 535 .mask_reset_reg = MASK_RESET_LDO_REG, 536 .mask_reset_pos = LDO6_MASK_RESET_SHIFT, 537 }, 538 { 539 .dt_node_name = "vref_ddr", 540 .voltage_table = vref_ddr_voltage_table, 541 .voltage_table_size = ARRAY_SIZE(vref_ddr_voltage_table), 542 .control_reg = VREF_DDR_CONTROL_REG, 543 .low_power_reg = VREF_DDR_PWRCTRL_REG, 544 .enable_pos = LDO_BUCK_ENABLE_POS, 545 .mask_reset_reg = MASK_RESET_LDO_REG, 546 .mask_reset_pos = VREF_DDR_MASK_RESET_SHIFT, 547 }, 548 { 549 .dt_node_name = "boost", 550 .voltage_table = fixed_5v_voltage_table, 551 .voltage_table_size = ARRAY_SIZE(fixed_5v_voltage_table), 552 .control_reg = USB_CONTROL_REG, 553 .enable_pos = BOOST_ENABLED_POS, 554 }, 555 { 556 .dt_node_name = "pwr_sw1", 557 .voltage_table = fixed_5v_voltage_table, 558 .voltage_table_size = ARRAY_SIZE(fixed_5v_voltage_table), 559 .control_reg = USB_CONTROL_REG, 560 .enable_pos = USBSW_OTG_SWITCH_ENABLED_POS, 561 }, 562 { 563 .dt_node_name = "pwr_sw2", 564 .voltage_table = fixed_5v_voltage_table, 565 .voltage_table_size = ARRAY_SIZE(fixed_5v_voltage_table), 566 .control_reg = USB_CONTROL_REG, 567 .enable_pos = SWIN_SWOUT_ENABLED_POS, 568 }, 569 }; 570 571 static const struct regul_struct *get_regulator_data(const char *name) 572 { 573 unsigned int i = 0; 574 575 for (i = 0; i < ARRAY_SIZE(regulators_table); i++) 576 if (strcmp(name, regulators_table[i].dt_node_name) == 0) 577 return ®ulators_table[i]; 578 579 /* Regulator not found */ 580 panic(name); 581 } 582 583 static uint8_t voltage_to_index(const char *name, uint16_t millivolts) 584 { 585 const struct regul_struct *regul = get_regulator_data(name); 586 unsigned int i = 0; 587 588 assert(regul->voltage_table); 589 for (i = 0; i < regul->voltage_table_size; i++) 590 if (regul->voltage_table[i] == millivolts) 591 return i; 592 593 /* Voltage not found */ 594 panic(name); 595 } 596 597 int stpmic1_powerctrl_on(void) 598 { 599 return stpmic1_register_update(MAIN_CONTROL_REG, PWRCTRL_PIN_VALID, 600 PWRCTRL_PIN_VALID); 601 } 602 603 int stpmic1_switch_off(void) 604 { 605 return stpmic1_register_update(MAIN_CONTROL_REG, 1, 606 SOFTWARE_SWITCH_OFF_ENABLED); 607 } 608 609 int stpmic1_regulator_enable(const char *name) 610 { 611 const struct regul_struct *regul = get_regulator_data(name); 612 613 return stpmic1_register_update(regul->control_reg, 614 BIT(regul->enable_pos), 615 BIT(regul->enable_pos)); 616 } 617 618 int stpmic1_regulator_disable(const char *name) 619 { 620 const struct regul_struct *regul = get_regulator_data(name); 621 622 return stpmic1_register_update(regul->control_reg, 0, 623 BIT(regul->enable_pos)); 624 } 625 626 bool stpmic1_is_regulator_enabled(const char *name) 627 { 628 const struct regul_struct *regul = get_regulator_data(name); 629 uint8_t val = 0; 630 631 if (stpmic1_register_read(regul->control_reg, &val)) 632 panic(); 633 634 return val & BIT(regul->enable_pos); 635 } 636 637 int stpmic1_regulator_voltage_set(const char *name, uint16_t millivolts) 638 { 639 uint8_t voltage_index = voltage_to_index(name, millivolts); 640 const struct regul_struct *regul = get_regulator_data(name); 641 uint8_t mask = 0; 642 643 /* Voltage can be set for buck<N> or ldo<N> (except ldo4) regulators */ 644 if (!strcmp(name, "buck")) 645 mask = BUCK_VOLTAGE_MASK; 646 else if (!strcmp(name, "ldo") && strcmp(name, "ldo4")) 647 mask = LDO_VOLTAGE_MASK; 648 else 649 return 0; 650 651 return stpmic1_register_update(regul->control_reg, 652 voltage_index << LDO_BUCK_VOLTAGE_SHIFT, 653 mask); 654 } 655 656 int stpmic1_regulator_mask_reset_set(const char *name) 657 { 658 const struct regul_struct *regul = get_regulator_data(name); 659 660 if (regul->control_reg == USB_CONTROL_REG) { 661 DMSG("No reset for USB control"); 662 return -1; 663 } 664 665 return stpmic1_register_update(regul->mask_reset_reg, 666 BIT(regul->mask_reset_pos), 667 LDO_BUCK_RESET_MASK << 668 regul->mask_reset_pos); 669 } 670 671 int stpmic1_bo_enable_unpg(struct stpmic1_bo_cfg *cfg) 672 { 673 return stpmic1_register_update(cfg->ctrl_reg, 674 BIT(cfg->enable_pos), 675 BIT(cfg->enable_pos)); 676 } 677 678 /* Returns 1 if no configuration are expected applied at runtime, 0 otherwise */ 679 int stpmic1_bo_voltage_cfg(const char *name, uint16_t millivolts, 680 struct stpmic1_bo_cfg *cfg) 681 { 682 uint8_t voltage_index = voltage_to_index(name, millivolts); 683 const struct regul_struct *regul = get_regulator_data(name); 684 uint8_t mask = 0; 685 686 /* Voltage can be set for buck<N> or ldo<N> (except ldo4) regulators */ 687 if (!strcmp(name, "buck")) 688 mask = BUCK_VOLTAGE_MASK; 689 else if (!strcmp(name, "ldo") && strcmp(name, "ldo4")) 690 mask = LDO_VOLTAGE_MASK; 691 else 692 return 1; 693 694 cfg->ctrl_reg = regul->control_reg; 695 cfg->value = voltage_index << LDO_BUCK_VOLTAGE_SHIFT; 696 cfg->mask = mask; 697 698 return 0; 699 } 700 701 int stpmic1_bo_voltage_unpg(struct stpmic1_bo_cfg *cfg) 702 { 703 return stpmic1_register_update(cfg->ctrl_reg, cfg->value, cfg->mask); 704 } 705 706 int stpmic1_bo_pull_down_cfg(const char *name, struct stpmic1_bo_cfg *cfg) 707 { 708 const struct regul_struct *regul = get_regulator_data(name); 709 710 cfg->pd_reg = regul->pull_down_reg; 711 cfg->pd_value = BIT(regul->pull_down_pos); 712 cfg->pd_mask = LDO_BUCK_PULL_DOWN_MASK << regul->pull_down_pos; 713 714 return 0; 715 } 716 717 int stpmic1_bo_pull_down_unpg(struct stpmic1_bo_cfg *cfg) 718 { 719 return stpmic1_register_update(cfg->pd_reg, cfg->pd_value, 720 cfg->pd_mask); 721 } 722 723 int stpmic1_bo_mask_reset_cfg(const char *name, struct stpmic1_bo_cfg *cfg) 724 { 725 const struct regul_struct *regul = get_regulator_data(name); 726 727 cfg->mrst_reg = regul->mask_reset_reg; 728 cfg->mrst_value = BIT(regul->mask_reset_pos); 729 cfg->mrst_mask = LDO_BUCK_RESET_MASK << regul->mask_reset_pos; 730 731 return 0; 732 } 733 734 int stpmic1_bo_mask_reset_unpg(struct stpmic1_bo_cfg *cfg) 735 { 736 return stpmic1_register_update(cfg->mrst_reg, cfg->mrst_value, 737 cfg->mrst_mask); 738 } 739 740 int stpmic1_regulator_voltage_get(const char *name) 741 { 742 const struct regul_struct *regul = get_regulator_data(name); 743 uint8_t value = 0; 744 uint8_t mask = 0; 745 746 /* Voltage can be set for buck<N> or ldo<N> (except ldo4) regulators */ 747 if (!strcmp(name, "buck")) 748 mask = BUCK_VOLTAGE_MASK; 749 else if (!strcmp(name, "ldo") && strcmp(name, "ldo4")) 750 mask = LDO_VOLTAGE_MASK; 751 else 752 return 0; 753 754 if (stpmic1_register_read(regul->control_reg, &value)) 755 return -1; 756 757 value = (value & mask) >> LDO_BUCK_VOLTAGE_SHIFT; 758 759 if (value > regul->voltage_table_size) 760 return -1; 761 762 return regul->voltage_table[value]; 763 } 764 765 int stpmic1_lp_copy_reg(const char *name) 766 { 767 const struct regul_struct *regul = get_regulator_data(name); 768 uint8_t val = 0; 769 int status = 0; 770 771 status = stpmic1_register_read(regul->control_reg, &val); 772 if (status) 773 return status; 774 775 return stpmic1_register_write(regul->low_power_reg, val); 776 } 777 778 int stpmic1_lp_cfg(const char *name, struct stpmic1_lp_cfg *cfg) 779 { 780 const struct regul_struct *regul = get_regulator_data(name); 781 782 cfg->ctrl_reg = regul->control_reg; 783 cfg->lp_reg = regul->low_power_reg; 784 785 return 0; 786 } 787 788 int stpmic1_lp_load_unpg(struct stpmic1_lp_cfg *cfg) 789 { 790 uint8_t val = 0; 791 int status = 0; 792 793 status = stpmic1_register_read(cfg->ctrl_reg, &val); 794 if (!status) 795 status = stpmic1_register_write(cfg->lp_reg, val); 796 797 return status; 798 } 799 800 int stpmic1_lp_reg_on_off(const char *name, uint8_t enable) 801 { 802 const struct regul_struct *regul = get_regulator_data(name); 803 804 return stpmic1_register_update(regul->low_power_reg, enable, 805 LDO_BUCK_ENABLE_MASK); 806 } 807 808 int stpmic1_lp_on_off_unpg(struct stpmic1_lp_cfg *cfg, int enable) 809 { 810 assert(enable == 0 || enable == 1); 811 return stpmic1_register_update(cfg->lp_reg, enable, 812 LDO_BUCK_ENABLE_MASK); 813 } 814 815 int stpmic1_lp_set_mode(const char *name, uint8_t hplp) 816 { 817 const struct regul_struct *regul = get_regulator_data(name); 818 819 return stpmic1_register_update(regul->low_power_reg, 820 hplp << LDO_BUCK_HPLP_POS, 821 BIT(LDO_BUCK_HPLP_POS)); 822 } 823 824 int stpmic1_lp_mode_unpg(struct stpmic1_lp_cfg *cfg, unsigned int mode) 825 { 826 assert(mode == 0 || mode == 1); 827 return stpmic1_register_update(cfg->lp_reg, 828 mode << LDO_BUCK_HPLP_POS, 829 BIT(LDO_BUCK_HPLP_POS)); 830 } 831 832 int stpmic1_lp_set_voltage(const char *name, uint16_t millivolts) 833 { 834 uint8_t voltage_index = voltage_to_index(name, millivolts); 835 const struct regul_struct *regul = get_regulator_data(name); 836 uint8_t mask = 0; 837 838 /* Voltage can be set for buck<N> or ldo<N> (except ldo4) regulators */ 839 if (!strcmp(name, "buck")) 840 mask = BUCK_VOLTAGE_MASK; 841 else if (!strcmp(name, "ldo") && strcmp(name, "ldo4")) 842 mask = LDO_VOLTAGE_MASK; 843 else 844 return 0; 845 846 return stpmic1_register_update(regul->low_power_reg, voltage_index << 2, 847 mask); 848 } 849 850 /* Returns 1 if no configuration are expected applied at runtime, 0 otherwise */ 851 int stpmic1_lp_voltage_cfg(const char *name, uint16_t millivolts, 852 struct stpmic1_lp_cfg *cfg) 853 854 { 855 uint8_t voltage_index = voltage_to_index(name, millivolts); 856 uint8_t mask = 0; 857 858 /* Voltage can be set for buck<N> or ldo<N> (except ldo4) regulators */ 859 if (!strcmp(name, "buck")) 860 mask = BUCK_VOLTAGE_MASK; 861 else if (!strcmp(name, "ldo") && strcmp(name, "ldo4")) 862 mask = LDO_VOLTAGE_MASK; 863 else 864 return 1; 865 866 assert(cfg->lp_reg == get_regulator_data(name)->low_power_reg); 867 cfg->value = voltage_index << 2; 868 cfg->mask = mask; 869 870 return 0; 871 } 872 873 int stpmic1_lp_voltage_unpg(struct stpmic1_lp_cfg *cfg) 874 { 875 return stpmic1_register_update(cfg->lp_reg, cfg->value, cfg->mask); 876 } 877 878 int stpmic1_register_read(uint8_t register_id, uint8_t *value) 879 { 880 struct i2c_handle_s *i2c = pmic_i2c_handle; 881 882 return stm32_i2c_read_write_membyte(i2c, pmic_i2c_addr, 883 register_id, value, 884 false /* !write */); 885 } 886 887 int stpmic1_register_write(uint8_t register_id, uint8_t value) 888 { 889 struct i2c_handle_s *i2c = pmic_i2c_handle; 890 uint8_t val = value; 891 892 return stm32_i2c_read_write_membyte(i2c, pmic_i2c_addr, 893 register_id, &val, 894 true /* write */); 895 } 896 897 int stpmic1_register_update(uint8_t register_id, uint8_t value, uint8_t mask) 898 { 899 int status = 0; 900 uint8_t val = 0; 901 902 status = stpmic1_register_read(register_id, &val); 903 if (status) 904 return status; 905 906 val = (val & ~mask) | (value & mask); 907 908 return stpmic1_register_write(register_id, val); 909 } 910 911 void stpmic1_bind_i2c(struct i2c_handle_s *i2c_handle, uint16_t i2c_addr) 912 { 913 pmic_i2c_handle = i2c_handle; 914 pmic_i2c_addr = i2c_addr; 915 } 916 917 void stpmic1_dump_regulators(void) 918 { 919 size_t i = 0; 920 char __maybe_unused const *name = NULL; 921 922 for (i = 0; i < ARRAY_SIZE(regulators_table); i++) { 923 if (!regulators_table[i].control_reg) 924 continue; 925 926 name = regulators_table[i].dt_node_name; 927 DMSG("PMIC regul %s: %sable, %dmV", 928 name, stpmic1_is_regulator_enabled(name) ? "en" : "dis", 929 stpmic1_regulator_voltage_get(name)); 930 } 931 } 932 933 int stpmic1_get_version(unsigned long *version) 934 { 935 uint8_t read_val = 0; 936 937 if (stpmic1_register_read(VERSION_STATUS_REG, &read_val)) 938 return -1; 939 940 *version = read_val; 941 return 0; 942 } 943