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