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