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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 | /* * Regulator driver for DA9063 PMIC series * * Copyright 2012 Dialog Semiconductors Ltd. * Copyright 2013 Philipp Zabel, Pengutronix * * Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/err.h> #include <linux/slab.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/regulator/of_regulator.h> #include <linux/mfd/da9063/core.h> #include <linux/mfd/da9063/pdata.h> #include <linux/mfd/da9063/registers.h> /* Definition for registering regmap bit fields using a mask */ #define BFIELD(_reg, _mask) \ REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \ sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1) /* Regulator capabilities and registers description */ struct da9063_regulator_info { struct regulator_desc desc; /* Current limiting */ unsigned n_current_limits; const int *current_limits; /* DA9063 main register fields */ struct reg_field mode; /* buck mode of operation */ struct reg_field suspend; struct reg_field sleep; struct reg_field suspend_sleep; unsigned int suspend_vsel_reg; struct reg_field ilimit; /* DA9063 event detection bit */ struct reg_field oc_event; }; /* Macros for LDO */ #define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \ .desc.id = chip##_ID_##regl_name, \ .desc.name = __stringify(chip##_##regl_name), \ .desc.ops = &da9063_ldo_ops, \ .desc.min_uV = (min_mV) * 1000, \ .desc.uV_step = (step_mV) * 1000, \ .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \ + (DA9063_V##regl_name##_BIAS)), \ .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ .desc.enable_mask = DA9063_LDO_EN, \ .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ .desc.vsel_mask = DA9063_V##regl_name##_MASK, \ .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \ .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \ .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \ .suspend_vsel_reg = DA9063_REG_V##regl_name##_B /* Macros for voltage DC/DC converters (BUCKs) */ #define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array) \ .desc.id = chip##_ID_##regl_name, \ .desc.name = __stringify(chip##_##regl_name), \ .desc.ops = &da9063_buck_ops, \ .desc.min_uV = (min_mV) * 1000, \ .desc.uV_step = (step_mV) * 1000, \ .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \ .current_limits = limits_array, \ .n_current_limits = ARRAY_SIZE(limits_array) #define DA9063_BUCK_COMMON_FIELDS(regl_name) \ .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ .desc.enable_mask = DA9063_BUCK_EN, \ .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ .desc.vsel_mask = DA9063_VBUCK_MASK, \ .desc.linear_min_sel = DA9063_VBUCK_BIAS, \ .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \ .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \ .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \ .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK) /* Defines asignment of regulators info table to chip model */ struct da9063_dev_model { const struct da9063_regulator_info *regulator_info; unsigned n_regulators; unsigned dev_model; }; /* Single regulator settings */ struct da9063_regulator { struct regulator_desc desc; struct regulator_dev *rdev; struct da9063 *hw; const struct da9063_regulator_info *info; struct regmap_field *mode; struct regmap_field *suspend; struct regmap_field *sleep; struct regmap_field *suspend_sleep; struct regmap_field *ilimit; }; /* Encapsulates all information for the regulators driver */ struct da9063_regulators { unsigned n_regulators; /* Array size to be defined during init. Keep at end. */ struct da9063_regulator regulator[0]; }; /* BUCK modes for DA9063 */ enum { BUCK_MODE_MANUAL, /* 0 */ BUCK_MODE_SLEEP, /* 1 */ BUCK_MODE_SYNC, /* 2 */ BUCK_MODE_AUTO /* 3 */ }; /* Regulator operations */ /* Current limits array (in uA) for BCORE1, BCORE2, BPRO. Entry indexes corresponds to register values. */ static const int da9063_buck_a_limits[] = { 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 }; /* Current limits array (in uA) for BMEM, BIO, BPERI. Entry indexes corresponds to register values. */ static const int da9063_buck_b_limits[] = { 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 }; /* Current limits array (in uA) for merged BCORE1 and BCORE2. Entry indexes corresponds to register values. */ static const int da9063_bcores_merged_limits[] = { 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000, 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000 }; /* Current limits array (in uA) for merged BMEM and BIO. Entry indexes corresponds to register values. */ static const int da9063_bmem_bio_merged_limits[] = { 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000 }; static int da9063_set_current_limit(struct regulator_dev *rdev, int min_uA, int max_uA) { struct da9063_regulator *regl = rdev_get_drvdata(rdev); const struct da9063_regulator_info *rinfo = regl->info; int n, tval; for (n = 0; n < rinfo->n_current_limits; n++) { tval = rinfo->current_limits[n]; if (tval >= min_uA && tval <= max_uA) return regmap_field_write(regl->ilimit, n); } return -EINVAL; } static int da9063_get_current_limit(struct regulator_dev *rdev) { struct da9063_regulator *regl = rdev_get_drvdata(rdev); const struct da9063_regulator_info *rinfo = regl->info; unsigned int sel; int ret; ret = regmap_field_read(regl->ilimit, &sel); if (ret < 0) return ret; if (sel >= rinfo->n_current_limits) sel = rinfo->n_current_limits - 1; return rinfo->current_limits[sel]; } static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned mode) { struct da9063_regulator *regl = rdev_get_drvdata(rdev); unsigned val; switch (mode) { case REGULATOR_MODE_FAST: val = BUCK_MODE_SYNC; break; case REGULATOR_MODE_NORMAL: val = BUCK_MODE_AUTO; break; case REGULATOR_MODE_STANDBY: val = BUCK_MODE_SLEEP; break; default: return -EINVAL; } return regmap_field_write(regl->mode, val); } /* * Bucks use single mode register field for normal operation * and suspend state. * There are 3 modes to map to: FAST, NORMAL, and STANDBY. */ static unsigned da9063_buck_get_mode(struct regulator_dev *rdev) { struct da9063_regulator *regl = rdev_get_drvdata(rdev); struct regmap_field *field; unsigned int val, mode = 0; int ret; ret = regmap_field_read(regl->mode, &val); if (ret < 0) return ret; switch (val) { default: case BUCK_MODE_MANUAL: mode = REGULATOR_MODE_FAST | REGULATOR_MODE_STANDBY; /* Sleep flag bit decides the mode */ break; case BUCK_MODE_SLEEP: return REGULATOR_MODE_STANDBY; case BUCK_MODE_SYNC: return REGULATOR_MODE_FAST; case BUCK_MODE_AUTO: return REGULATOR_MODE_NORMAL; } /* Detect current regulator state */ ret = regmap_field_read(regl->suspend, &val); if (ret < 0) return 0; /* Read regulator mode from proper register, depending on state */ if (val) field = regl->suspend_sleep; else field = regl->sleep; ret = regmap_field_read(field, &val); if (ret < 0) return 0; if (val) mode &= REGULATOR_MODE_STANDBY; else mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST; return mode; } /* * LDOs use sleep flags - one for normal and one for suspend state. * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state. */ static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned mode) { struct da9063_regulator *regl = rdev_get_drvdata(rdev); unsigned val; switch (mode) { case REGULATOR_MODE_NORMAL: val = 0; break; case REGULATOR_MODE_STANDBY: val = 1; break; default: return -EINVAL; } return regmap_field_write(regl->sleep, val); } static unsigned da9063_ldo_get_mode(struct regulator_dev *rdev) { struct da9063_regulator *regl = rdev_get_drvdata(rdev); struct regmap_field *field; int ret, val; /* Detect current regulator state */ ret = regmap_field_read(regl->suspend, &val); if (ret < 0) return 0; /* Read regulator mode from proper register, depending on state */ if (val) field = regl->suspend_sleep; else field = regl->sleep; ret = regmap_field_read(field, &val); if (ret < 0) return 0; if (val) return REGULATOR_MODE_STANDBY; else return REGULATOR_MODE_NORMAL; } static int da9063_buck_get_status(struct regulator_dev *rdev) { int ret = regulator_is_enabled_regmap(rdev); if (ret == 0) { ret = REGULATOR_STATUS_OFF; } else if (ret > 0) { ret = da9063_buck_get_mode(rdev); if (ret > 0) ret = regulator_mode_to_status(ret); else if (ret == 0) ret = -EIO; } return ret; } static int da9063_ldo_get_status(struct regulator_dev *rdev) { int ret = regulator_is_enabled_regmap(rdev); if (ret == 0) { ret = REGULATOR_STATUS_OFF; } else if (ret > 0) { ret = da9063_ldo_get_mode(rdev); if (ret > 0) ret = regulator_mode_to_status(ret); else if (ret == 0) ret = -EIO; } return ret; } static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV) { struct da9063_regulator *regl = rdev_get_drvdata(rdev); const struct da9063_regulator_info *rinfo = regl->info; int ret, sel; sel = regulator_map_voltage_linear(rdev, uV, uV); if (sel < 0) return sel; sel <<= ffs(rdev->desc->vsel_mask) - 1; ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg, rdev->desc->vsel_mask, sel); return ret; } static int da9063_suspend_enable(struct regulator_dev *rdev) { struct da9063_regulator *regl = rdev_get_drvdata(rdev); return regmap_field_write(regl->suspend, 1); } static int da9063_suspend_disable(struct regulator_dev *rdev) { struct da9063_regulator *regl = rdev_get_drvdata(rdev); return regmap_field_write(regl->suspend, 0); } static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) { struct da9063_regulator *regl = rdev_get_drvdata(rdev); int val; switch (mode) { case REGULATOR_MODE_FAST: val = BUCK_MODE_SYNC; break; case REGULATOR_MODE_NORMAL: val = BUCK_MODE_AUTO; break; case REGULATOR_MODE_STANDBY: val = BUCK_MODE_SLEEP; break; default: return -EINVAL; } return regmap_field_write(regl->mode, val); } static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) { struct da9063_regulator *regl = rdev_get_drvdata(rdev); unsigned val; switch (mode) { case REGULATOR_MODE_NORMAL: val = 0; break; case REGULATOR_MODE_STANDBY: val = 1; break; default: return -EINVAL; } return regmap_field_write(regl->suspend_sleep, val); } static const struct regulator_ops da9063_buck_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .list_voltage = regulator_list_voltage_linear, .set_current_limit = da9063_set_current_limit, .get_current_limit = da9063_get_current_limit, .set_mode = da9063_buck_set_mode, .get_mode = da9063_buck_get_mode, .get_status = da9063_buck_get_status, .set_suspend_voltage = da9063_set_suspend_voltage, .set_suspend_enable = da9063_suspend_enable, .set_suspend_disable = da9063_suspend_disable, .set_suspend_mode = da9063_buck_set_suspend_mode, }; static const struct regulator_ops da9063_ldo_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .list_voltage = regulator_list_voltage_linear, .set_mode = da9063_ldo_set_mode, .get_mode = da9063_ldo_get_mode, .get_status = da9063_ldo_get_status, .set_suspend_voltage = da9063_set_suspend_voltage, .set_suspend_enable = da9063_suspend_enable, .set_suspend_disable = da9063_suspend_disable, .set_suspend_mode = da9063_ldo_set_suspend_mode, }; /* Info of regulators for DA9063 */ static const struct da9063_regulator_info da9063_regulator_info[] = { { DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570, da9063_buck_a_limits), DA9063_BUCK_COMMON_FIELDS(BCORE1), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), }, { DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570, da9063_buck_a_limits), DA9063_BUCK_COMMON_FIELDS(BCORE2), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL), .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK), }, { DA9063_BUCK(DA9063, BPRO, 530, 10, 1800, da9063_buck_a_limits), DA9063_BUCK_COMMON_FIELDS(BPRO), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL), .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK), }, { DA9063_BUCK(DA9063, BMEM, 800, 20, 3340, da9063_buck_b_limits), DA9063_BUCK_COMMON_FIELDS(BMEM), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), }, { DA9063_BUCK(DA9063, BIO, 800, 20, 3340, da9063_buck_b_limits), DA9063_BUCK_COMMON_FIELDS(BIO), .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL), .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK), }, { DA9063_BUCK(DA9063, BPERI, 800, 20, 3340, da9063_buck_b_limits), DA9063_BUCK_COMMON_FIELDS(BPERI), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL), .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK), }, { DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570, da9063_bcores_merged_limits), /* BCORES_MERGED uses the same register fields as BCORE1 */ DA9063_BUCK_COMMON_FIELDS(BCORE1), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), }, { DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340, da9063_bmem_bio_merged_limits), /* BMEM_BIO_MERGED uses the same register fields as BMEM */ DA9063_BUCK_COMMON_FIELDS(BMEM), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), }, { DA9063_LDO(DA9063, LDO1, 600, 20, 1860), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO1_SEL), }, { DA9063_LDO(DA9063, LDO2, 600, 20, 1860), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO2_SEL), }, { DA9063_LDO(DA9063, LDO3, 900, 20, 3440), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO3_SEL), .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM), }, { DA9063_LDO(DA9063, LDO4, 900, 20, 3440), .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VLDO4_SEL), .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM), }, { DA9063_LDO(DA9063, LDO5, 900, 50, 3600), .suspend = BFIELD(DA9063_REG_LDO5_CONT, DA9063_VLDO5_SEL), }, { DA9063_LDO(DA9063, LDO6, 900, 50, 3600), .suspend = BFIELD(DA9063_REG_LDO6_CONT, DA9063_VLDO6_SEL), }, { DA9063_LDO(DA9063, LDO7, 900, 50, 3600), .suspend = BFIELD(DA9063_REG_LDO7_CONT, DA9063_VLDO7_SEL), .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM), }, { DA9063_LDO(DA9063, LDO8, 900, 50, 3600), .suspend = BFIELD(DA9063_REG_LDO8_CONT, DA9063_VLDO8_SEL), .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM), }, { DA9063_LDO(DA9063, LDO9, 950, 50, 3600), .suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL), }, { DA9063_LDO(DA9063, LDO10, 900, 50, 3600), .suspend = BFIELD(DA9063_REG_LDO10_CONT, DA9063_VLDO10_SEL), }, { DA9063_LDO(DA9063, LDO11, 900, 50, 3600), .suspend = BFIELD(DA9063_REG_LDO11_CONT, DA9063_VLDO11_SEL), .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM), }, }; /* Link chip model with regulators info table */ static struct da9063_dev_model regulators_models[] = { { .regulator_info = da9063_regulator_info, .n_regulators = ARRAY_SIZE(da9063_regulator_info), .dev_model = PMIC_DA9063, }, { } }; /* Regulator interrupt handlers */ static irqreturn_t da9063_ldo_lim_event(int irq, void *data) { struct da9063_regulators *regulators = data; struct da9063 *hw = regulators->regulator[0].hw; struct da9063_regulator *regl; int bits, i , ret; ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits); if (ret < 0) return IRQ_NONE; for (i = regulators->n_regulators - 1; i >= 0; i--) { regl = ®ulators->regulator[i]; if (regl->info->oc_event.reg != DA9063_REG_STATUS_D) continue; if (BIT(regl->info->oc_event.lsb) & bits) regulator_notifier_call_chain(regl->rdev, REGULATOR_EVENT_OVER_CURRENT, NULL); } return IRQ_HANDLED; } /* * Probing and Initialisation functions */ static const struct regulator_init_data *da9063_get_regulator_initdata( const struct da9063_regulators_pdata *regl_pdata, int id) { int i; for (i = 0; i < regl_pdata->n_regulators; i++) { if (id == regl_pdata->regulator_data[i].id) return regl_pdata->regulator_data[i].initdata; } return NULL; } #ifdef CONFIG_OF static struct of_regulator_match da9063_matches[] = { [DA9063_ID_BCORE1] = { .name = "bcore1" }, [DA9063_ID_BCORE2] = { .name = "bcore2" }, [DA9063_ID_BPRO] = { .name = "bpro", }, [DA9063_ID_BMEM] = { .name = "bmem", }, [DA9063_ID_BIO] = { .name = "bio", }, [DA9063_ID_BPERI] = { .name = "bperi", }, [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, [DA9063_ID_LDO1] = { .name = "ldo1", }, [DA9063_ID_LDO2] = { .name = "ldo2", }, [DA9063_ID_LDO3] = { .name = "ldo3", }, [DA9063_ID_LDO4] = { .name = "ldo4", }, [DA9063_ID_LDO5] = { .name = "ldo5", }, [DA9063_ID_LDO6] = { .name = "ldo6", }, [DA9063_ID_LDO7] = { .name = "ldo7", }, [DA9063_ID_LDO8] = { .name = "ldo8", }, [DA9063_ID_LDO9] = { .name = "ldo9", }, [DA9063_ID_LDO10] = { .name = "ldo10", }, [DA9063_ID_LDO11] = { .name = "ldo11", }, }; static struct da9063_regulators_pdata *da9063_parse_regulators_dt( struct platform_device *pdev, struct of_regulator_match **da9063_reg_matches) { struct da9063_regulators_pdata *pdata; struct da9063_regulator_data *rdata; struct device_node *node; int i, n, num; node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); if (!node) { dev_err(&pdev->dev, "Regulators device node not found\n"); return ERR_PTR(-ENODEV); } num = of_regulator_match(&pdev->dev, node, da9063_matches, ARRAY_SIZE(da9063_matches)); of_node_put(node); if (num < 0) { dev_err(&pdev->dev, "Failed to match regulators\n"); return ERR_PTR(-EINVAL); } pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return ERR_PTR(-ENOMEM); pdata->regulator_data = devm_kzalloc(&pdev->dev, num * sizeof(*pdata->regulator_data), GFP_KERNEL); if (!pdata->regulator_data) return ERR_PTR(-ENOMEM); pdata->n_regulators = num; n = 0; for (i = 0; i < ARRAY_SIZE(da9063_matches); i++) { if (!da9063_matches[i].init_data) continue; rdata = &pdata->regulator_data[n]; rdata->id = i; rdata->initdata = da9063_matches[i].init_data; n++; } *da9063_reg_matches = da9063_matches; return pdata; } #else static struct da9063_regulators_pdata *da9063_parse_regulators_dt( struct platform_device *pdev, struct of_regulator_match **da9063_reg_matches) { *da9063_reg_matches = NULL; return ERR_PTR(-ENODEV); } #endif static int da9063_regulator_probe(struct platform_device *pdev) { struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); struct da9063_pdata *da9063_pdata = dev_get_platdata(da9063->dev); struct of_regulator_match *da9063_reg_matches = NULL; struct da9063_regulators_pdata *regl_pdata; const struct da9063_dev_model *model; struct da9063_regulators *regulators; struct da9063_regulator *regl; struct regulator_config config; bool bcores_merged, bmem_bio_merged; int id, irq, n, n_regulators, ret, val; size_t size; regl_pdata = da9063_pdata ? da9063_pdata->regulators_pdata : NULL; if (!regl_pdata) regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches); if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) { dev_err(&pdev->dev, "No regulators defined for the platform\n"); return PTR_ERR(regl_pdata); } /* Find regulators set for particular device model */ for (model = regulators_models; model->regulator_info; model++) { if (model->dev_model == da9063->model) break; } if (!model->regulator_info) { dev_err(&pdev->dev, "Chip model not recognised (%u)\n", da9063->model); return -ENODEV; } ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val); if (ret < 0) { dev_err(&pdev->dev, "Error while reading BUCKs configuration\n"); return ret; } bcores_merged = val & DA9063_BCORE_MERGE; bmem_bio_merged = val & DA9063_BUCK_MERGE; n_regulators = model->n_regulators; if (bcores_merged) n_regulators -= 2; /* remove BCORE1, BCORE2 */ else n_regulators--; /* remove BCORES_MERGED */ if (bmem_bio_merged) n_regulators -= 2; /* remove BMEM, BIO */ else n_regulators--; /* remove BMEM_BIO_MERGED */ /* Allocate memory required by usable regulators */ size = sizeof(struct da9063_regulators) + n_regulators * sizeof(struct da9063_regulator); regulators = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); if (!regulators) return -ENOMEM; regulators->n_regulators = n_regulators; platform_set_drvdata(pdev, regulators); /* Register all regulators declared in platform information */ n = 0; id = 0; while (n < regulators->n_regulators) { /* Skip regulator IDs depending on merge mode configuration */ switch (id) { case DA9063_ID_BCORE1: case DA9063_ID_BCORE2: if (bcores_merged) { id++; continue; } break; case DA9063_ID_BMEM: case DA9063_ID_BIO: if (bmem_bio_merged) { id++; continue; } break; case DA9063_ID_BCORES_MERGED: if (!bcores_merged) { id++; continue; } break; case DA9063_ID_BMEM_BIO_MERGED: if (!bmem_bio_merged) { id++; continue; } break; } /* Initialise regulator structure */ regl = ®ulators->regulator[n]; regl->hw = da9063; regl->info = &model->regulator_info[id]; regl->desc = regl->info->desc; regl->desc.type = REGULATOR_VOLTAGE; regl->desc.owner = THIS_MODULE; if (regl->info->mode.reg) regl->mode = devm_regmap_field_alloc(&pdev->dev, da9063->regmap, regl->info->mode); if (regl->info->suspend.reg) regl->suspend = devm_regmap_field_alloc(&pdev->dev, da9063->regmap, regl->info->suspend); if (regl->info->sleep.reg) regl->sleep = devm_regmap_field_alloc(&pdev->dev, da9063->regmap, regl->info->sleep); if (regl->info->suspend_sleep.reg) regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev, da9063->regmap, regl->info->suspend_sleep); if (regl->info->ilimit.reg) regl->ilimit = devm_regmap_field_alloc(&pdev->dev, da9063->regmap, regl->info->ilimit); /* Register regulator */ memset(&config, 0, sizeof(config)); config.dev = &pdev->dev; config.init_data = da9063_get_regulator_initdata(regl_pdata, id); config.driver_data = regl; if (da9063_reg_matches) config.of_node = da9063_reg_matches[id].of_node; config.regmap = da9063->regmap; regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, &config); if (IS_ERR(regl->rdev)) { dev_err(&pdev->dev, "Failed to register %s regulator\n", regl->desc.name); return PTR_ERR(regl->rdev); } id++; n++; } /* LDOs overcurrent event support */ irq = platform_get_irq_byname(pdev, "LDO_LIM"); if (irq < 0) { dev_err(&pdev->dev, "Failed to get IRQ.\n"); return irq; } ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, da9063_ldo_lim_event, IRQF_TRIGGER_LOW | IRQF_ONESHOT, "LDO_LIM", regulators); if (ret) { dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n"); return ret; } return 0; } static struct platform_driver da9063_regulator_driver = { .driver = { .name = DA9063_DRVNAME_REGULATORS, }, .probe = da9063_regulator_probe, }; static int __init da9063_regulator_init(void) { return platform_driver_register(&da9063_regulator_driver); } subsys_initcall(da9063_regulator_init); static void __exit da9063_regulator_cleanup(void) { platform_driver_unregister(&da9063_regulator_driver); } module_exit(da9063_regulator_cleanup); /* Module information */ MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>"); MODULE_DESCRIPTION("DA9063 regulators driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS); |