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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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Split TWL6030 logic from twl-regulator.c: * Copyright (C) 2008 David Brownell * * Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com> */ #include <linux/module.h> #include <linux/string.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/err.h> #include <linux/platform_device.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/regulator/of_regulator.h> #include <linux/mfd/twl.h> #include <linux/delay.h> struct twlreg_info { /* start of regulator's PM_RECEIVER control register bank */ u8 base; /* twl resource ID, for resource control state machine */ u8 id; u8 flags; /* used by regulator core */ struct regulator_desc desc; /* chip specific features */ unsigned long features; /* data passed from board for external get/set voltage */ void *data; }; /* LDO control registers ... offset is from the base of its register bank. * The first three registers of all power resource banks help hardware to * manage the various resource groups. */ /* Common offset in TWL4030/6030 */ #define VREG_GRP 0 /* TWL6030 register offsets */ #define VREG_TRANS 1 #define VREG_STATE 2 #define VREG_VOLTAGE 3 #define VREG_VOLTAGE_SMPS 4 /* TWL6030 Misc register offsets */ #define VREG_BC_ALL 1 #define VREG_BC_REF 2 #define VREG_BC_PROC 3 #define VREG_BC_CLK_RST 4 /* TWL6030 LDO register values for VREG_VOLTAGE */ #define TWL6030_VREG_VOLTAGE_WR_S BIT(7) /* TWL6030 LDO register values for CFG_STATE */ #define TWL6030_CFG_STATE_OFF 0x00 #define TWL6030_CFG_STATE_ON 0x01 #define TWL6030_CFG_STATE_OFF2 0x02 #define TWL6030_CFG_STATE_SLEEP 0x03 #define TWL6030_CFG_STATE_GRP_SHIFT 5 #define TWL6030_CFG_STATE_APP_SHIFT 2 #define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT) #define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\ TWL6030_CFG_STATE_APP_SHIFT) /* Flags for SMPS Voltage reading and LDO reading*/ #define SMPS_OFFSET_EN BIT(0) #define SMPS_EXTENDED_EN BIT(1) #define TWL_6030_WARM_RESET BIT(3) /* twl6032 SMPS EPROM values */ #define TWL6030_SMPS_OFFSET 0xB0 #define TWL6030_SMPS_MULT 0xB3 #define SMPS_MULTOFFSET_SMPS4 BIT(0) #define SMPS_MULTOFFSET_VIO BIT(1) #define SMPS_MULTOFFSET_SMPS3 BIT(6) static inline int twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset) { u8 value; int status; status = twl_i2c_read_u8(slave_subgp, &value, info->base + offset); return (status < 0) ? status : value; } static inline int twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset, u8 value) { return twl_i2c_write_u8(slave_subgp, value, info->base + offset); } /* generic power resource operations, which work on all regulators */ static int twlreg_grp(struct regulator_dev *rdev) { return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER, VREG_GRP); } /* * Enable/disable regulators by joining/leaving the P1 (processor) group. * We assume nobody else is updating the DEV_GRP registers. */ /* definition for 6030 family */ #define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */ #define P2_GRP_6030 BIT(1) /* "peripherals" */ #define P1_GRP_6030 BIT(0) /* CPU/Linux */ static int twl6030reg_is_enabled(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int grp = 0, val; if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) { grp = twlreg_grp(rdev); if (grp < 0) return grp; grp &= P1_GRP_6030; } else { grp = 1; } val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE); val = TWL6030_CFG_STATE_APP(val); return grp && (val == TWL6030_CFG_STATE_ON); } #define PB_I2C_BUSY BIT(0) #define PB_I2C_BWEN BIT(1) static int twl6030reg_enable(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int grp = 0; int ret; if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) grp = twlreg_grp(rdev); if (grp < 0) return grp; ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, grp << TWL6030_CFG_STATE_GRP_SHIFT | TWL6030_CFG_STATE_ON); return ret; } static int twl6030reg_disable(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int grp = 0; int ret; if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030; /* For 6030, set the off state for all grps enabled */ ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, (grp) << TWL6030_CFG_STATE_GRP_SHIFT | TWL6030_CFG_STATE_OFF); return ret; } static int twl6030reg_get_status(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int val; val = twlreg_grp(rdev); if (val < 0) return val; val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE); switch (TWL6030_CFG_STATE_APP(val)) { case TWL6030_CFG_STATE_ON: return REGULATOR_STATUS_NORMAL; case TWL6030_CFG_STATE_SLEEP: return REGULATOR_STATUS_STANDBY; case TWL6030_CFG_STATE_OFF: case TWL6030_CFG_STATE_OFF2: default: break; } return REGULATOR_STATUS_OFF; } static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode) { struct twlreg_info *info = rdev_get_drvdata(rdev); int grp = 0; int val; if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) grp = twlreg_grp(rdev); if (grp < 0) return grp; /* Compose the state register settings */ val = grp << TWL6030_CFG_STATE_GRP_SHIFT; /* We can only set the mode through state machine commands... */ switch (mode) { case REGULATOR_MODE_NORMAL: val |= TWL6030_CFG_STATE_ON; break; case REGULATOR_MODE_STANDBY: val |= TWL6030_CFG_STATE_SLEEP; break; default: return -EINVAL; } return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val); } static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV, unsigned *selector) { return -ENODEV; } static int twl6030coresmps_get_voltage(struct regulator_dev *rdev) { return -ENODEV; } static const struct regulator_ops twl6030coresmps_ops = { .set_voltage = twl6030coresmps_set_voltage, .get_voltage = twl6030coresmps_get_voltage, }; static int twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) { struct twlreg_info *info = rdev_get_drvdata(rdev); if (info->flags & TWL_6030_WARM_RESET) selector |= TWL6030_VREG_VOLTAGE_WR_S; return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, selector); } static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE); if (info->flags & TWL_6030_WARM_RESET) vsel &= ~TWL6030_VREG_VOLTAGE_WR_S; return vsel; } static const struct regulator_ops twl6030ldo_ops = { .list_voltage = regulator_list_voltage_linear_range, .set_voltage_sel = twl6030ldo_set_voltage_sel, .get_voltage_sel = twl6030ldo_get_voltage_sel, .enable = twl6030reg_enable, .disable = twl6030reg_disable, .is_enabled = twl6030reg_is_enabled, .set_mode = twl6030reg_set_mode, .get_status = twl6030reg_get_status, }; static const struct regulator_ops twl6030fixed_ops = { .list_voltage = regulator_list_voltage_linear, .enable = twl6030reg_enable, .disable = twl6030reg_disable, .is_enabled = twl6030reg_is_enabled, .set_mode = twl6030reg_set_mode, .get_status = twl6030reg_get_status, }; /* * SMPS status and control */ static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index) { struct twlreg_info *info = rdev_get_drvdata(rdev); int voltage = 0; switch (info->flags) { case SMPS_OFFSET_EN: voltage = 100000; fallthrough; case 0: switch (index) { case 0: voltage = 0; break; case 58: voltage = 1350 * 1000; break; case 59: voltage = 1500 * 1000; break; case 60: voltage = 1800 * 1000; break; case 61: voltage = 1900 * 1000; break; case 62: voltage = 2100 * 1000; break; default: voltage += (600000 + (12500 * (index - 1))); } break; case SMPS_EXTENDED_EN: switch (index) { case 0: voltage = 0; break; case 58: voltage = 2084 * 1000; break; case 59: voltage = 2315 * 1000; break; case 60: voltage = 2778 * 1000; break; case 61: voltage = 2932 * 1000; break; case 62: voltage = 3241 * 1000; break; default: voltage = (1852000 + (38600 * (index - 1))); } break; case SMPS_OFFSET_EN | SMPS_EXTENDED_EN: switch (index) { case 0: voltage = 0; break; case 58: voltage = 4167 * 1000; break; case 59: voltage = 2315 * 1000; break; case 60: voltage = 2778 * 1000; break; case 61: voltage = 2932 * 1000; break; case 62: voltage = 3241 * 1000; break; default: voltage = (2161000 + (38600 * (index - 1))); } break; } return voltage; } static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV, int max_uV) { struct twlreg_info *info = rdev_get_drvdata(rdev); int vsel = 0; switch (info->flags) { case 0: if (min_uV == 0) vsel = 0; else if ((min_uV >= 600000) && (min_uV <= 1300000)) { vsel = DIV_ROUND_UP(min_uV - 600000, 12500); vsel++; } /* Values 1..57 for vsel are linear and can be calculated * values 58..62 are non linear. */ else if ((min_uV > 1900000) && (min_uV <= 2100000)) vsel = 62; else if ((min_uV > 1800000) && (min_uV <= 1900000)) vsel = 61; else if ((min_uV > 1500000) && (min_uV <= 1800000)) vsel = 60; else if ((min_uV > 1350000) && (min_uV <= 1500000)) vsel = 59; else if ((min_uV > 1300000) && (min_uV <= 1350000)) vsel = 58; else return -EINVAL; break; case SMPS_OFFSET_EN: if (min_uV == 0) vsel = 0; else if ((min_uV >= 700000) && (min_uV <= 1420000)) { vsel = DIV_ROUND_UP(min_uV - 700000, 12500); vsel++; } /* Values 1..57 for vsel are linear and can be calculated * values 58..62 are non linear. */ else if ((min_uV > 1900000) && (min_uV <= 2100000)) vsel = 62; else if ((min_uV > 1800000) && (min_uV <= 1900000)) vsel = 61; else if ((min_uV > 1500000) && (min_uV <= 1800000)) vsel = 60; else if ((min_uV > 1350000) && (min_uV <= 1500000)) vsel = 59; else return -EINVAL; break; case SMPS_EXTENDED_EN: if (min_uV == 0) { vsel = 0; } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) { vsel = DIV_ROUND_UP(min_uV - 1852000, 38600); vsel++; } break; case SMPS_OFFSET_EN|SMPS_EXTENDED_EN: if (min_uV == 0) { vsel = 0; } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) { vsel = DIV_ROUND_UP(min_uV - 2161000, 38600); vsel++; } break; } return vsel; } static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev, unsigned int selector) { struct twlreg_info *info = rdev_get_drvdata(rdev); return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS, selector); } static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS); } static const struct regulator_ops twlsmps_ops = { .list_voltage = twl6030smps_list_voltage, .map_voltage = twl6030smps_map_voltage, .set_voltage_sel = twl6030smps_set_voltage_sel, .get_voltage_sel = twl6030smps_get_voltage_sel, .enable = twl6030reg_enable, .disable = twl6030reg_disable, .is_enabled = twl6030reg_is_enabled, .set_mode = twl6030reg_set_mode, .get_status = twl6030reg_get_status, }; /*----------------------------------------------------------------------*/ static const struct linear_range twl6030ldo_linear_range[] = { REGULATOR_LINEAR_RANGE(0, 0, 0, 0), REGULATOR_LINEAR_RANGE(1000000, 1, 24, 100000), REGULATOR_LINEAR_RANGE(2750000, 31, 31, 0), }; #define TWL6030_ADJUSTABLE_SMPS(label) \ static const struct twlreg_info TWL6030_INFO_##label = { \ .desc = { \ .name = #label, \ .id = TWL6030_REG_##label, \ .ops = &twl6030coresmps_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ }, \ } #define TWL6030_ADJUSTABLE_LDO(label, offset) \ static const struct twlreg_info TWL6030_INFO_##label = { \ .base = offset, \ .desc = { \ .name = #label, \ .id = TWL6030_REG_##label, \ .n_voltages = 32, \ .linear_ranges = twl6030ldo_linear_range, \ .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \ .ops = &twl6030ldo_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ }, \ } #define TWL6032_ADJUSTABLE_LDO(label, offset) \ static const struct twlreg_info TWL6032_INFO_##label = { \ .base = offset, \ .desc = { \ .name = #label, \ .id = TWL6032_REG_##label, \ .n_voltages = 32, \ .linear_ranges = twl6030ldo_linear_range, \ .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \ .ops = &twl6030ldo_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ }, \ } #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \ static const struct twlreg_info TWLFIXED_INFO_##label = { \ .base = offset, \ .id = 0, \ .desc = { \ .name = #label, \ .id = TWL6030##_REG_##label, \ .n_voltages = 1, \ .ops = &twl6030fixed_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = mVolts * 1000, \ .enable_time = turnon_delay, \ .of_map_mode = NULL, \ }, \ } #define TWL6032_ADJUSTABLE_SMPS(label, offset) \ static const struct twlreg_info TWLSMPS_INFO_##label = { \ .base = offset, \ .desc = { \ .name = #label, \ .id = TWL6032_REG_##label, \ .n_voltages = 63, \ .ops = &twlsmps_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ }, \ } /* VUSBCP is managed *only* by the USB subchip */ /* 6030 REG with base as PMC Slave Misc : 0x0030 */ /* Turnon-delay and remap configuration values for 6030 are not verified since the specification is not public */ TWL6030_ADJUSTABLE_SMPS(VDD1); TWL6030_ADJUSTABLE_SMPS(VDD2); TWL6030_ADJUSTABLE_SMPS(VDD3); TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54); TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58); TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c); TWL6030_ADJUSTABLE_LDO(VMMC, 0x68); TWL6030_ADJUSTABLE_LDO(VPP, 0x6c); TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74); /* 6025 are renamed compared to 6030 versions */ TWL6032_ADJUSTABLE_LDO(LDO2, 0x54); TWL6032_ADJUSTABLE_LDO(LDO4, 0x58); TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c); TWL6032_ADJUSTABLE_LDO(LDO5, 0x68); TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c); TWL6032_ADJUSTABLE_LDO(LDO7, 0x74); TWL6032_ADJUSTABLE_LDO(LDO6, 0x60); TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64); TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70); TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0); TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0); TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0); TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0); TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0); TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0); TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34); TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10); TWL6032_ADJUSTABLE_SMPS(VIO, 0x16); static u8 twl_get_smps_offset(void) { u8 value; twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value, TWL6030_SMPS_OFFSET); return value; } static u8 twl_get_smps_mult(void) { u8 value; twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value, TWL6030_SMPS_MULT); return value; } #define TWL_OF_MATCH(comp, family, label) \ { \ .compatible = comp, \ .data = &family##_INFO_##label, \ } #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label) #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label) #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label) #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label) static const struct of_device_id twl_of_match[] = { TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1), TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2), TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3), TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030), TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030), TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030), TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC), TWL6030_OF_MATCH("ti,twl6030-vpp", VPP), TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM), TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2), TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4), TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3), TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5), TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1), TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7), TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6), TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN), TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB), TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA), TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO), TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC), TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB), TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8), TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1), TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3), TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4), TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO), {}, }; MODULE_DEVICE_TABLE(of, twl_of_match); static int twlreg_probe(struct platform_device *pdev) { int id; struct twlreg_info *info; const struct twlreg_info *template; struct regulator_init_data *initdata; struct regulation_constraints *c; struct regulator_dev *rdev; struct regulator_config config = { }; struct device_node *np = pdev->dev.of_node; template = of_device_get_match_data(&pdev->dev); if (!template) return -ENODEV; id = template->desc.id; initdata = of_get_regulator_init_data(&pdev->dev, np, &template->desc); if (!initdata) return -EINVAL; info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL); if (!info) return -ENOMEM; /* Constrain board-specific capabilities according to what * this driver and the chip itself can actually do. */ c = &initdata->constraints; c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY; c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS; switch (id) { case TWL6032_REG_SMPS3: if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3) info->flags |= SMPS_EXTENDED_EN; if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3) info->flags |= SMPS_OFFSET_EN; break; case TWL6032_REG_SMPS4: if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4) info->flags |= SMPS_EXTENDED_EN; if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4) info->flags |= SMPS_OFFSET_EN; break; case TWL6032_REG_VIO: if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO) info->flags |= SMPS_EXTENDED_EN; if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO) info->flags |= SMPS_OFFSET_EN; break; } if (of_get_property(np, "ti,retain-on-reset", NULL)) info->flags |= TWL_6030_WARM_RESET; config.dev = &pdev->dev; config.init_data = initdata; config.driver_data = info; config.of_node = np; rdev = devm_regulator_register(&pdev->dev, &info->desc, &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "can't register %s, %ld\n", info->desc.name, PTR_ERR(rdev)); return PTR_ERR(rdev); } platform_set_drvdata(pdev, rdev); /* NOTE: many regulators support short-circuit IRQs (presentable * as REGULATOR_OVER_CURRENT notifications?) configured via: * - SC_CONFIG * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4) * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2) * - IT_CONFIG */ return 0; } MODULE_ALIAS("platform:twl6030_reg"); static struct platform_driver twlreg_driver = { .probe = twlreg_probe, /* NOTE: short name, to work around driver model truncation of * "twl_regulator.12" (and friends) to "twl_regulator.1". */ .driver = { .name = "twl6030_reg", .of_match_table = of_match_ptr(twl_of_match), }, }; static int __init twlreg_init(void) { return platform_driver_register(&twlreg_driver); } subsys_initcall(twlreg_init); static void __exit twlreg_exit(void) { platform_driver_unregister(&twlreg_driver); } module_exit(twlreg_exit) MODULE_DESCRIPTION("TWL6030 regulator driver"); MODULE_LICENSE("GPL"); |