1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Split TWL6030 logic from twl-regulator.c: 4 * Copyright (C) 2008 David Brownell 5 * 6 * Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com> 7 */ 8 9#include <linux/module.h> 10#include <linux/string.h> 11#include <linux/slab.h> 12#include <linux/init.h> 13#include <linux/err.h> 14#include <linux/platform_device.h> 15#include <linux/of.h> 16#include <linux/regulator/driver.h> 17#include <linux/regulator/machine.h> 18#include <linux/regulator/of_regulator.h> 19#include <linux/mfd/twl.h> 20#include <linux/delay.h> 21 22struct twlreg_info { 23 /* start of regulator's PM_RECEIVER control register bank */ 24 u8 base; 25 26 /* twl resource ID, for resource control state machine */ 27 u8 id; 28 29 u8 flags; 30 31 /* used by regulator core */ 32 struct regulator_desc desc; 33 34 /* chip specific features */ 35 unsigned long features; 36 37 /* data passed from board for external get/set voltage */ 38 void *data; 39}; 40 41 42/* LDO control registers ... offset is from the base of its register bank. 43 * The first three registers of all power resource banks help hardware to 44 * manage the various resource groups. 45 */ 46/* Common offset in TWL4030/6030 */ 47#define VREG_GRP 0 48/* TWL6030 register offsets */ 49#define VREG_TRANS 1 50#define VREG_STATE 2 51#define VREG_VOLTAGE 3 52#define VREG_VOLTAGE_SMPS 4 53/* TWL6030 Misc register offsets */ 54#define VREG_BC_ALL 1 55#define VREG_BC_REF 2 56#define VREG_BC_PROC 3 57#define VREG_BC_CLK_RST 4 58 59/* TWL6030 LDO register values for VREG_VOLTAGE */ 60#define TWL6030_VREG_VOLTAGE_WR_S BIT(7) 61 62/* TWL6030 LDO register values for CFG_STATE */ 63#define TWL6030_CFG_STATE_OFF 0x00 64#define TWL6030_CFG_STATE_ON 0x01 65#define TWL6030_CFG_STATE_OFF2 0x02 66#define TWL6030_CFG_STATE_SLEEP 0x03 67#define TWL6030_CFG_STATE_GRP_SHIFT 5 68#define TWL6030_CFG_STATE_APP_SHIFT 2 69#define TWL6030_CFG_STATE_MASK 0x03 70#define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT) 71#define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\ 72 TWL6030_CFG_STATE_APP_SHIFT) 73 74/* Flags for SMPS Voltage reading and LDO reading*/ 75#define SMPS_OFFSET_EN BIT(0) 76#define SMPS_EXTENDED_EN BIT(1) 77#define TWL_6030_WARM_RESET BIT(3) 78 79/* twl6032 SMPS EPROM values */ 80#define TWL6030_SMPS_OFFSET 0xB0 81#define TWL6030_SMPS_MULT 0xB3 82#define SMPS_MULTOFFSET_SMPS4 BIT(0) 83#define SMPS_MULTOFFSET_VIO BIT(1) 84#define SMPS_MULTOFFSET_SMPS3 BIT(6) 85 86static inline int 87twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset) 88{ 89 u8 value; 90 int status; 91 92 status = twl_i2c_read_u8(slave_subgp, 93 &value, info->base + offset); 94 return (status < 0) ? status : value; 95} 96 97static inline int 98twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset, 99 u8 value) 100{ 101 return twl_i2c_write_u8(slave_subgp, 102 value, info->base + offset); 103} 104 105/* generic power resource operations, which work on all regulators */ 106static int twlreg_grp(struct regulator_dev *rdev) 107{ 108 return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER, 109 VREG_GRP); 110} 111 112/* 113 * Enable/disable regulators by joining/leaving the P1 (processor) group. 114 * We assume nobody else is updating the DEV_GRP registers. 115 */ 116/* definition for 6030 family */ 117#define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */ 118#define P2_GRP_6030 BIT(1) /* "peripherals" */ 119#define P1_GRP_6030 BIT(0) /* CPU/Linux */ 120 121static int twl6030reg_is_enabled(struct regulator_dev *rdev) 122{ 123 struct twlreg_info *info = rdev_get_drvdata(rdev); 124 int grp = 0, val; 125 126 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) { 127 grp = twlreg_grp(rdev); 128 if (grp < 0) 129 return grp; 130 grp &= P1_GRP_6030; 131 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE); 132 val = TWL6030_CFG_STATE_APP(val); 133 } else { 134 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE); 135 val &= TWL6030_CFG_STATE_MASK; 136 grp = 1; 137 } 138 139 return grp && (val == TWL6030_CFG_STATE_ON); 140} 141 142#define PB_I2C_BUSY BIT(0) 143#define PB_I2C_BWEN BIT(1) 144 145 146static int twl6030reg_enable(struct regulator_dev *rdev) 147{ 148 struct twlreg_info *info = rdev_get_drvdata(rdev); 149 int grp = 0; 150 int ret; 151 152 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) 153 grp = twlreg_grp(rdev); 154 if (grp < 0) 155 return grp; 156 157 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, 158 grp << TWL6030_CFG_STATE_GRP_SHIFT | 159 TWL6030_CFG_STATE_ON); 160 return ret; 161} 162 163static int twl6030reg_disable(struct regulator_dev *rdev) 164{ 165 struct twlreg_info *info = rdev_get_drvdata(rdev); 166 int grp = 0; 167 int ret; 168 169 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) 170 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030; 171 172 /* For 6030, set the off state for all grps enabled */ 173 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, 174 (grp) << TWL6030_CFG_STATE_GRP_SHIFT | 175 TWL6030_CFG_STATE_OFF); 176 177 return ret; 178} 179 180static int twl6030reg_get_status(struct regulator_dev *rdev) 181{ 182 struct twlreg_info *info = rdev_get_drvdata(rdev); 183 int val; 184 185 val = twlreg_grp(rdev); 186 if (val < 0) 187 return val; 188 189 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE); 190 191 if (info->features & TWL6032_SUBCLASS) 192 val &= TWL6030_CFG_STATE_MASK; 193 else 194 val = TWL6030_CFG_STATE_APP(val); 195 196 switch (val) { 197 case TWL6030_CFG_STATE_ON: 198 return REGULATOR_STATUS_NORMAL; 199 200 case TWL6030_CFG_STATE_SLEEP: 201 return REGULATOR_STATUS_STANDBY; 202 203 case TWL6030_CFG_STATE_OFF: 204 case TWL6030_CFG_STATE_OFF2: 205 default: 206 break; 207 } 208 209 return REGULATOR_STATUS_OFF; 210} 211 212static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode) 213{ 214 struct twlreg_info *info = rdev_get_drvdata(rdev); 215 int grp = 0; 216 int val; 217 218 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) 219 grp = twlreg_grp(rdev); 220 221 if (grp < 0) 222 return grp; 223 224 /* Compose the state register settings */ 225 val = grp << TWL6030_CFG_STATE_GRP_SHIFT; 226 /* We can only set the mode through state machine commands... */ 227 switch (mode) { 228 case REGULATOR_MODE_NORMAL: 229 val |= TWL6030_CFG_STATE_ON; 230 break; 231 case REGULATOR_MODE_STANDBY: 232 val |= TWL6030_CFG_STATE_SLEEP; 233 break; 234 235 default: 236 return -EINVAL; 237 } 238 239 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val); 240} 241 242static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV, 243 int max_uV, unsigned *selector) 244{ 245 return -ENODEV; 246} 247 248static int twl6030coresmps_get_voltage(struct regulator_dev *rdev) 249{ 250 return -ENODEV; 251} 252 253static const struct regulator_ops twl6030coresmps_ops = { 254 .set_voltage = twl6030coresmps_set_voltage, 255 .get_voltage = twl6030coresmps_get_voltage, 256}; 257 258static int 259twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) 260{ 261 struct twlreg_info *info = rdev_get_drvdata(rdev); 262 263 if (info->flags & TWL_6030_WARM_RESET) 264 selector |= TWL6030_VREG_VOLTAGE_WR_S; 265 266 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, 267 selector); 268} 269 270static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev) 271{ 272 struct twlreg_info *info = rdev_get_drvdata(rdev); 273 int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE); 274 275 if (info->flags & TWL_6030_WARM_RESET) 276 vsel &= ~TWL6030_VREG_VOLTAGE_WR_S; 277 278 return vsel; 279} 280 281static const struct regulator_ops twl6030ldo_ops = { 282 .list_voltage = regulator_list_voltage_linear_range, 283 284 .set_voltage_sel = twl6030ldo_set_voltage_sel, 285 .get_voltage_sel = twl6030ldo_get_voltage_sel, 286 287 .enable = twl6030reg_enable, 288 .disable = twl6030reg_disable, 289 .is_enabled = twl6030reg_is_enabled, 290 291 .set_mode = twl6030reg_set_mode, 292 293 .get_status = twl6030reg_get_status, 294}; 295 296static const struct regulator_ops twl6030fixed_ops = { 297 .list_voltage = regulator_list_voltage_linear, 298 299 .enable = twl6030reg_enable, 300 .disable = twl6030reg_disable, 301 .is_enabled = twl6030reg_is_enabled, 302 303 .set_mode = twl6030reg_set_mode, 304 305 .get_status = twl6030reg_get_status, 306}; 307 308/* 309 * SMPS status and control 310 */ 311 312static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index) 313{ 314 struct twlreg_info *info = rdev_get_drvdata(rdev); 315 316 int voltage = 0; 317 318 switch (info->flags) { 319 case SMPS_OFFSET_EN: 320 voltage = 100000; 321 fallthrough; 322 case 0: 323 switch (index) { 324 case 0: 325 voltage = 0; 326 break; 327 case 58: 328 voltage = 1350 * 1000; 329 break; 330 case 59: 331 voltage = 1500 * 1000; 332 break; 333 case 60: 334 voltage = 1800 * 1000; 335 break; 336 case 61: 337 voltage = 1900 * 1000; 338 break; 339 case 62: 340 voltage = 2100 * 1000; 341 break; 342 default: 343 voltage += (600000 + (12500 * (index - 1))); 344 } 345 break; 346 case SMPS_EXTENDED_EN: 347 switch (index) { 348 case 0: 349 voltage = 0; 350 break; 351 case 58: 352 voltage = 2084 * 1000; 353 break; 354 case 59: 355 voltage = 2315 * 1000; 356 break; 357 case 60: 358 voltage = 2778 * 1000; 359 break; 360 case 61: 361 voltage = 2932 * 1000; 362 break; 363 case 62: 364 voltage = 3241 * 1000; 365 break; 366 default: 367 voltage = (1852000 + (38600 * (index - 1))); 368 } 369 break; 370 case SMPS_OFFSET_EN | SMPS_EXTENDED_EN: 371 switch (index) { 372 case 0: 373 voltage = 0; 374 break; 375 case 58: 376 voltage = 4167 * 1000; 377 break; 378 case 59: 379 voltage = 2315 * 1000; 380 break; 381 case 60: 382 voltage = 2778 * 1000; 383 break; 384 case 61: 385 voltage = 2932 * 1000; 386 break; 387 case 62: 388 voltage = 3241 * 1000; 389 break; 390 default: 391 voltage = (2161000 + (38600 * (index - 1))); 392 } 393 break; 394 } 395 396 return voltage; 397} 398 399static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV, 400 int max_uV) 401{ 402 struct twlreg_info *info = rdev_get_drvdata(rdev); 403 int vsel = 0; 404 405 switch (info->flags) { 406 case 0: 407 if (min_uV == 0) 408 vsel = 0; 409 else if ((min_uV >= 600000) && (min_uV <= 1300000)) { 410 vsel = DIV_ROUND_UP(min_uV - 600000, 12500); 411 vsel++; 412 } 413 /* Values 1..57 for vsel are linear and can be calculated 414 * values 58..62 are non linear. 415 */ 416 else if ((min_uV > 1900000) && (min_uV <= 2100000)) 417 vsel = 62; 418 else if ((min_uV > 1800000) && (min_uV <= 1900000)) 419 vsel = 61; 420 else if ((min_uV > 1500000) && (min_uV <= 1800000)) 421 vsel = 60; 422 else if ((min_uV > 1350000) && (min_uV <= 1500000)) 423 vsel = 59; 424 else if ((min_uV > 1300000) && (min_uV <= 1350000)) 425 vsel = 58; 426 else 427 return -EINVAL; 428 break; 429 case SMPS_OFFSET_EN: 430 if (min_uV == 0) 431 vsel = 0; 432 else if ((min_uV >= 700000) && (min_uV <= 1420000)) { 433 vsel = DIV_ROUND_UP(min_uV - 700000, 12500); 434 vsel++; 435 } 436 /* Values 1..57 for vsel are linear and can be calculated 437 * values 58..62 are non linear. 438 */ 439 else if ((min_uV > 1900000) && (min_uV <= 2100000)) 440 vsel = 62; 441 else if ((min_uV > 1800000) && (min_uV <= 1900000)) 442 vsel = 61; 443 else if ((min_uV > 1500000) && (min_uV <= 1800000)) 444 vsel = 60; 445 else if ((min_uV > 1350000) && (min_uV <= 1500000)) 446 vsel = 59; 447 else 448 return -EINVAL; 449 break; 450 case SMPS_EXTENDED_EN: 451 if (min_uV == 0) { 452 vsel = 0; 453 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) { 454 vsel = DIV_ROUND_UP(min_uV - 1852000, 38600); 455 vsel++; 456 } 457 break; 458 case SMPS_OFFSET_EN|SMPS_EXTENDED_EN: 459 if (min_uV == 0) { 460 vsel = 0; 461 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) { 462 vsel = DIV_ROUND_UP(min_uV - 2161000, 38600); 463 vsel++; 464 } 465 break; 466 } 467 468 return vsel; 469} 470 471static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev, 472 unsigned int selector) 473{ 474 struct twlreg_info *info = rdev_get_drvdata(rdev); 475 476 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS, 477 selector); 478} 479 480static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev) 481{ 482 struct twlreg_info *info = rdev_get_drvdata(rdev); 483 484 return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS); 485} 486 487static const struct regulator_ops twlsmps_ops = { 488 .list_voltage = twl6030smps_list_voltage, 489 .map_voltage = twl6030smps_map_voltage, 490 491 .set_voltage_sel = twl6030smps_set_voltage_sel, 492 .get_voltage_sel = twl6030smps_get_voltage_sel, 493 494 .enable = twl6030reg_enable, 495 .disable = twl6030reg_disable, 496 .is_enabled = twl6030reg_is_enabled, 497 498 .set_mode = twl6030reg_set_mode, 499 500 .get_status = twl6030reg_get_status, 501}; 502 503/*----------------------------------------------------------------------*/ 504static const struct linear_range twl6030ldo_linear_range[] = { 505 REGULATOR_LINEAR_RANGE(0, 0, 0, 0), 506 REGULATOR_LINEAR_RANGE(1000000, 1, 24, 100000), 507 REGULATOR_LINEAR_RANGE(2750000, 31, 31, 0), 508}; 509 510#define TWL6030_ADJUSTABLE_SMPS(label) \ 511static const struct twlreg_info TWL6030_INFO_##label = { \ 512 .desc = { \ 513 .name = #label, \ 514 .id = TWL6030_REG_##label, \ 515 .ops = &twl6030coresmps_ops, \ 516 .type = REGULATOR_VOLTAGE, \ 517 .owner = THIS_MODULE, \ 518 }, \ 519 } 520 521#define TWL6030_ADJUSTABLE_LDO(label, offset) \ 522static const struct twlreg_info TWL6030_INFO_##label = { \ 523 .base = offset, \ 524 .desc = { \ 525 .name = #label, \ 526 .id = TWL6030_REG_##label, \ 527 .n_voltages = 32, \ 528 .linear_ranges = twl6030ldo_linear_range, \ 529 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \ 530 .ops = &twl6030ldo_ops, \ 531 .type = REGULATOR_VOLTAGE, \ 532 .owner = THIS_MODULE, \ 533 }, \ 534 } 535 536#define TWL6032_ADJUSTABLE_LDO(label, offset) \ 537static const struct twlreg_info TWL6032_INFO_##label = { \ 538 .base = offset, \ 539 .features = TWL6032_SUBCLASS, \ 540 .desc = { \ 541 .name = #label, \ 542 .id = TWL6032_REG_##label, \ 543 .n_voltages = 32, \ 544 .linear_ranges = twl6030ldo_linear_range, \ 545 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \ 546 .ops = &twl6030ldo_ops, \ 547 .type = REGULATOR_VOLTAGE, \ 548 .owner = THIS_MODULE, \ 549 }, \ 550 } 551 552#define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \ 553static const struct twlreg_info TWLFIXED_INFO_##label = { \ 554 .base = offset, \ 555 .id = 0, \ 556 .desc = { \ 557 .name = #label, \ 558 .id = TWL6030##_REG_##label, \ 559 .n_voltages = 1, \ 560 .ops = &twl6030fixed_ops, \ 561 .type = REGULATOR_VOLTAGE, \ 562 .owner = THIS_MODULE, \ 563 .min_uV = mVolts * 1000, \ 564 .enable_time = turnon_delay, \ 565 .of_map_mode = NULL, \ 566 }, \ 567 } 568 569#define TWL6032_ADJUSTABLE_SMPS(label, offset) \ 570static const struct twlreg_info TWLSMPS_INFO_##label = { \ 571 .base = offset, \ 572 .features = TWL6032_SUBCLASS, \ 573 .desc = { \ 574 .name = #label, \ 575 .id = TWL6032_REG_##label, \ 576 .n_voltages = 63, \ 577 .ops = &twlsmps_ops, \ 578 .type = REGULATOR_VOLTAGE, \ 579 .owner = THIS_MODULE, \ 580 }, \ 581 } 582 583/* VUSBCP is managed *only* by the USB subchip */ 584/* 6030 REG with base as PMC Slave Misc : 0x0030 */ 585/* Turnon-delay and remap configuration values for 6030 are not 586 verified since the specification is not public */ 587TWL6030_ADJUSTABLE_SMPS(VDD1); 588TWL6030_ADJUSTABLE_SMPS(VDD2); 589TWL6030_ADJUSTABLE_SMPS(VDD3); 590TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54); 591TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58); 592TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c); 593TWL6030_ADJUSTABLE_LDO(VMMC, 0x68); 594TWL6030_ADJUSTABLE_LDO(VPP, 0x6c); 595TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74); 596/* 6025 are renamed compared to 6030 versions */ 597TWL6032_ADJUSTABLE_LDO(LDO2, 0x54); 598TWL6032_ADJUSTABLE_LDO(LDO4, 0x58); 599TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c); 600TWL6032_ADJUSTABLE_LDO(LDO5, 0x68); 601TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c); 602TWL6032_ADJUSTABLE_LDO(LDO7, 0x74); 603TWL6032_ADJUSTABLE_LDO(LDO6, 0x60); 604TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64); 605TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70); 606TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0); 607TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0); 608TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0); 609TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0); 610TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0); 611TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0); 612TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34); 613TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10); 614TWL6032_ADJUSTABLE_SMPS(VIO, 0x16); 615 616static u8 twl_get_smps_offset(void) 617{ 618 u8 value; 619 620 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value, 621 TWL6030_SMPS_OFFSET); 622 return value; 623} 624 625static u8 twl_get_smps_mult(void) 626{ 627 u8 value; 628 629 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value, 630 TWL6030_SMPS_MULT); 631 return value; 632} 633 634#define TWL_OF_MATCH(comp, family, label) \ 635 { \ 636 .compatible = comp, \ 637 .data = &family##_INFO_##label, \ 638 } 639 640#define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label) 641#define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label) 642#define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label) 643#define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label) 644 645static const struct of_device_id twl_of_match[] = { 646 TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1), 647 TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2), 648 TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3), 649 TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030), 650 TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030), 651 TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030), 652 TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC), 653 TWL6030_OF_MATCH("ti,twl6030-vpp", VPP), 654 TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM), 655 TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2), 656 TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4), 657 TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3), 658 TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5), 659 TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1), 660 TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7), 661 TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6), 662 TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN), 663 TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB), 664 TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA), 665 TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO), 666 TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC), 667 TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB), 668 TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8), 669 TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1), 670 TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3), 671 TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4), 672 TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO), 673 {}, 674}; 675MODULE_DEVICE_TABLE(of, twl_of_match); 676 677static int twlreg_probe(struct platform_device *pdev) 678{ 679 int id; 680 struct twlreg_info *info; 681 const struct twlreg_info *template; 682 struct regulator_init_data *initdata; 683 struct regulation_constraints *c; 684 struct regulator_dev *rdev; 685 struct regulator_config config = { }; 686 struct device_node *np = pdev->dev.of_node; 687 688 template = of_device_get_match_data(&pdev->dev); 689 if (!template) 690 return -ENODEV; 691 692 id = template->desc.id; 693 initdata = of_get_regulator_init_data(&pdev->dev, np, &template->desc); 694 if (!initdata) 695 return -EINVAL; 696 697 info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL); 698 if (!info) 699 return -ENOMEM; 700 701 /* Constrain board-specific capabilities according to what 702 * this driver and the chip itself can actually do. 703 */ 704 c = &initdata->constraints; 705 c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY; 706 c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE 707 | REGULATOR_CHANGE_MODE 708 | REGULATOR_CHANGE_STATUS; 709 710 switch (id) { 711 case TWL6032_REG_SMPS3: 712 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3) 713 info->flags |= SMPS_EXTENDED_EN; 714 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3) 715 info->flags |= SMPS_OFFSET_EN; 716 break; 717 case TWL6032_REG_SMPS4: 718 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4) 719 info->flags |= SMPS_EXTENDED_EN; 720 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4) 721 info->flags |= SMPS_OFFSET_EN; 722 break; 723 case TWL6032_REG_VIO: 724 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO) 725 info->flags |= SMPS_EXTENDED_EN; 726 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO) 727 info->flags |= SMPS_OFFSET_EN; 728 break; 729 } 730 731 if (of_property_read_bool(np, "ti,retain-on-reset")) 732 info->flags |= TWL_6030_WARM_RESET; 733 734 config.dev = &pdev->dev; 735 config.init_data = initdata; 736 config.driver_data = info; 737 config.of_node = np; 738 739 rdev = devm_regulator_register(&pdev->dev, &info->desc, &config); 740 if (IS_ERR(rdev)) { 741 dev_err(&pdev->dev, "can't register %s, %ld\n", 742 info->desc.name, PTR_ERR(rdev)); 743 return PTR_ERR(rdev); 744 } 745 platform_set_drvdata(pdev, rdev); 746 747 /* NOTE: many regulators support short-circuit IRQs (presentable 748 * as REGULATOR_OVER_CURRENT notifications?) configured via: 749 * - SC_CONFIG 750 * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4) 751 * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2) 752 * - IT_CONFIG 753 */ 754 755 return 0; 756} 757 758MODULE_ALIAS("platform:twl6030_reg"); 759 760static struct platform_driver twlreg_driver = { 761 .probe = twlreg_probe, 762 /* NOTE: short name, to work around driver model truncation of 763 * "twl_regulator.12" (and friends) to "twl_regulator.1". 764 */ 765 .driver = { 766 .name = "twl6030_reg", 767 .probe_type = PROBE_PREFER_ASYNCHRONOUS, 768 .of_match_table = of_match_ptr(twl_of_match), 769 }, 770}; 771 772static int __init twlreg_init(void) 773{ 774 return platform_driver_register(&twlreg_driver); 775} 776subsys_initcall(twlreg_init); 777 778static void __exit twlreg_exit(void) 779{ 780 platform_driver_unregister(&twlreg_driver); 781} 782module_exit(twlreg_exit) 783 784MODULE_DESCRIPTION("TWL6030 regulator driver"); 785MODULE_LICENSE("GPL"); 786