1 /* 2 * Split TWL6030 logic from twl-regulator.c: 3 * Copyright (C) 2008 David Brownell 4 * 5 * Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 */ 12 13 #include <linux/module.h> 14 #include <linux/string.h> 15 #include <linux/slab.h> 16 #include <linux/init.h> 17 #include <linux/err.h> 18 #include <linux/platform_device.h> 19 #include <linux/of.h> 20 #include <linux/of_device.h> 21 #include <linux/regulator/driver.h> 22 #include <linux/regulator/machine.h> 23 #include <linux/regulator/of_regulator.h> 24 #include <linux/i2c/twl.h> 25 #include <linux/delay.h> 26 27 struct twlreg_info { 28 /* start of regulator's PM_RECEIVER control register bank */ 29 u8 base; 30 31 /* twl resource ID, for resource control state machine */ 32 u8 id; 33 34 /* chip constraints on regulator behavior */ 35 u16 min_mV; 36 37 u8 flags; 38 39 /* used by regulator core */ 40 struct regulator_desc desc; 41 42 /* chip specific features */ 43 unsigned long features; 44 45 /* data passed from board for external get/set voltage */ 46 void *data; 47 }; 48 49 50 /* LDO control registers ... offset is from the base of its register bank. 51 * The first three registers of all power resource banks help hardware to 52 * manage the various resource groups. 53 */ 54 /* Common offset in TWL4030/6030 */ 55 #define VREG_GRP 0 56 /* TWL6030 register offsets */ 57 #define VREG_TRANS 1 58 #define VREG_STATE 2 59 #define VREG_VOLTAGE 3 60 #define VREG_VOLTAGE_SMPS 4 61 /* TWL6030 Misc register offsets */ 62 #define VREG_BC_ALL 1 63 #define VREG_BC_REF 2 64 #define VREG_BC_PROC 3 65 #define VREG_BC_CLK_RST 4 66 67 /* TWL6030 LDO register values for CFG_STATE */ 68 #define TWL6030_CFG_STATE_OFF 0x00 69 #define TWL6030_CFG_STATE_ON 0x01 70 #define TWL6030_CFG_STATE_OFF2 0x02 71 #define TWL6030_CFG_STATE_SLEEP 0x03 72 #define TWL6030_CFG_STATE_GRP_SHIFT 5 73 #define TWL6030_CFG_STATE_APP_SHIFT 2 74 #define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT) 75 #define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\ 76 TWL6030_CFG_STATE_APP_SHIFT) 77 78 /* Flags for SMPS Voltage reading */ 79 #define SMPS_OFFSET_EN BIT(0) 80 #define SMPS_EXTENDED_EN BIT(1) 81 82 /* twl6032 SMPS EPROM values */ 83 #define TWL6030_SMPS_OFFSET 0xB0 84 #define TWL6030_SMPS_MULT 0xB3 85 #define SMPS_MULTOFFSET_SMPS4 BIT(0) 86 #define SMPS_MULTOFFSET_VIO BIT(1) 87 #define SMPS_MULTOFFSET_SMPS3 BIT(6) 88 89 static inline int 90 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset) 91 { 92 u8 value; 93 int status; 94 95 status = twl_i2c_read_u8(slave_subgp, 96 &value, info->base + offset); 97 return (status < 0) ? status : value; 98 } 99 100 static inline int 101 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset, 102 u8 value) 103 { 104 return twl_i2c_write_u8(slave_subgp, 105 value, info->base + offset); 106 } 107 108 /* generic power resource operations, which work on all regulators */ 109 static int twlreg_grp(struct regulator_dev *rdev) 110 { 111 return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER, 112 VREG_GRP); 113 } 114 115 /* 116 * Enable/disable regulators by joining/leaving the P1 (processor) group. 117 * We assume nobody else is updating the DEV_GRP registers. 118 */ 119 /* definition for 6030 family */ 120 #define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */ 121 #define P2_GRP_6030 BIT(1) /* "peripherals" */ 122 #define P1_GRP_6030 BIT(0) /* CPU/Linux */ 123 124 static int twl6030reg_is_enabled(struct regulator_dev *rdev) 125 { 126 struct twlreg_info *info = rdev_get_drvdata(rdev); 127 int grp = 0, val; 128 129 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) { 130 grp = twlreg_grp(rdev); 131 if (grp < 0) 132 return grp; 133 grp &= P1_GRP_6030; 134 } else { 135 grp = 1; 136 } 137 138 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE); 139 val = TWL6030_CFG_STATE_APP(val); 140 141 return grp && (val == TWL6030_CFG_STATE_ON); 142 } 143 144 #define PB_I2C_BUSY BIT(0) 145 #define PB_I2C_BWEN BIT(1) 146 147 148 static int twl6030reg_enable(struct regulator_dev *rdev) 149 { 150 struct twlreg_info *info = rdev_get_drvdata(rdev); 151 int grp = 0; 152 int ret; 153 154 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) 155 grp = twlreg_grp(rdev); 156 if (grp < 0) 157 return grp; 158 159 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, 160 grp << TWL6030_CFG_STATE_GRP_SHIFT | 161 TWL6030_CFG_STATE_ON); 162 return ret; 163 } 164 165 static int twl6030reg_disable(struct regulator_dev *rdev) 166 { 167 struct twlreg_info *info = rdev_get_drvdata(rdev); 168 int grp = 0; 169 int ret; 170 171 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) 172 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030; 173 174 /* For 6030, set the off state for all grps enabled */ 175 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, 176 (grp) << TWL6030_CFG_STATE_GRP_SHIFT | 177 TWL6030_CFG_STATE_OFF); 178 179 return ret; 180 } 181 182 static int twl6030reg_get_status(struct regulator_dev *rdev) 183 { 184 struct twlreg_info *info = rdev_get_drvdata(rdev); 185 int val; 186 187 val = twlreg_grp(rdev); 188 if (val < 0) 189 return val; 190 191 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE); 192 193 switch (TWL6030_CFG_STATE_APP(val)) { 194 case TWL6030_CFG_STATE_ON: 195 return REGULATOR_STATUS_NORMAL; 196 197 case TWL6030_CFG_STATE_SLEEP: 198 return REGULATOR_STATUS_STANDBY; 199 200 case TWL6030_CFG_STATE_OFF: 201 case TWL6030_CFG_STATE_OFF2: 202 default: 203 break; 204 } 205 206 return REGULATOR_STATUS_OFF; 207 } 208 209 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode) 210 { 211 struct twlreg_info *info = rdev_get_drvdata(rdev); 212 int grp = 0; 213 int val; 214 215 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) 216 grp = twlreg_grp(rdev); 217 218 if (grp < 0) 219 return grp; 220 221 /* Compose the state register settings */ 222 val = grp << TWL6030_CFG_STATE_GRP_SHIFT; 223 /* We can only set the mode through state machine commands... */ 224 switch (mode) { 225 case REGULATOR_MODE_NORMAL: 226 val |= TWL6030_CFG_STATE_ON; 227 break; 228 case REGULATOR_MODE_STANDBY: 229 val |= TWL6030_CFG_STATE_SLEEP; 230 break; 231 232 default: 233 return -EINVAL; 234 } 235 236 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val); 237 } 238 239 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV, 240 int max_uV, unsigned *selector) 241 { 242 return -ENODEV; 243 } 244 245 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev) 246 { 247 return -ENODEV; 248 } 249 250 static struct regulator_ops twl6030coresmps_ops = { 251 .set_voltage = twl6030coresmps_set_voltage, 252 .get_voltage = twl6030coresmps_get_voltage, 253 }; 254 255 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel) 256 { 257 struct twlreg_info *info = rdev_get_drvdata(rdev); 258 259 switch (sel) { 260 case 0: 261 return 0; 262 case 1 ... 24: 263 /* Linear mapping from 00000001 to 00011000: 264 * Absolute voltage value = 1.0 V + 0.1 V × (sel – 00000001) 265 */ 266 return (info->min_mV + 100 * (sel - 1)) * 1000; 267 case 25 ... 30: 268 return -EINVAL; 269 case 31: 270 return 2750000; 271 default: 272 return -EINVAL; 273 } 274 } 275 276 static int 277 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) 278 { 279 struct twlreg_info *info = rdev_get_drvdata(rdev); 280 281 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, 282 selector); 283 } 284 285 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev) 286 { 287 struct twlreg_info *info = rdev_get_drvdata(rdev); 288 int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE); 289 290 return vsel; 291 } 292 293 static struct regulator_ops twl6030ldo_ops = { 294 .list_voltage = twl6030ldo_list_voltage, 295 296 .set_voltage_sel = twl6030ldo_set_voltage_sel, 297 .get_voltage_sel = twl6030ldo_get_voltage_sel, 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 static struct regulator_ops twl6030fixed_ops = { 309 .list_voltage = regulator_list_voltage_linear, 310 311 .enable = twl6030reg_enable, 312 .disable = twl6030reg_disable, 313 .is_enabled = twl6030reg_is_enabled, 314 315 .set_mode = twl6030reg_set_mode, 316 317 .get_status = twl6030reg_get_status, 318 }; 319 320 /* 321 * SMPS status and control 322 */ 323 324 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index) 325 { 326 struct twlreg_info *info = rdev_get_drvdata(rdev); 327 328 int voltage = 0; 329 330 switch (info->flags) { 331 case SMPS_OFFSET_EN: 332 voltage = 100000; 333 /* fall through */ 334 case 0: 335 switch (index) { 336 case 0: 337 voltage = 0; 338 break; 339 case 58: 340 voltage = 1350 * 1000; 341 break; 342 case 59: 343 voltage = 1500 * 1000; 344 break; 345 case 60: 346 voltage = 1800 * 1000; 347 break; 348 case 61: 349 voltage = 1900 * 1000; 350 break; 351 case 62: 352 voltage = 2100 * 1000; 353 break; 354 default: 355 voltage += (600000 + (12500 * (index - 1))); 356 } 357 break; 358 case SMPS_EXTENDED_EN: 359 switch (index) { 360 case 0: 361 voltage = 0; 362 break; 363 case 58: 364 voltage = 2084 * 1000; 365 break; 366 case 59: 367 voltage = 2315 * 1000; 368 break; 369 case 60: 370 voltage = 2778 * 1000; 371 break; 372 case 61: 373 voltage = 2932 * 1000; 374 break; 375 case 62: 376 voltage = 3241 * 1000; 377 break; 378 default: 379 voltage = (1852000 + (38600 * (index - 1))); 380 } 381 break; 382 case SMPS_OFFSET_EN | SMPS_EXTENDED_EN: 383 switch (index) { 384 case 0: 385 voltage = 0; 386 break; 387 case 58: 388 voltage = 4167 * 1000; 389 break; 390 case 59: 391 voltage = 2315 * 1000; 392 break; 393 case 60: 394 voltage = 2778 * 1000; 395 break; 396 case 61: 397 voltage = 2932 * 1000; 398 break; 399 case 62: 400 voltage = 3241 * 1000; 401 break; 402 default: 403 voltage = (2161000 + (38600 * (index - 1))); 404 } 405 break; 406 } 407 408 return voltage; 409 } 410 411 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV, 412 int max_uV) 413 { 414 struct twlreg_info *info = rdev_get_drvdata(rdev); 415 int vsel = 0; 416 417 switch (info->flags) { 418 case 0: 419 if (min_uV == 0) 420 vsel = 0; 421 else if ((min_uV >= 600000) && (min_uV <= 1300000)) { 422 vsel = DIV_ROUND_UP(min_uV - 600000, 12500); 423 vsel++; 424 } 425 /* Values 1..57 for vsel are linear and can be calculated 426 * values 58..62 are non linear. 427 */ 428 else if ((min_uV > 1900000) && (min_uV <= 2100000)) 429 vsel = 62; 430 else if ((min_uV > 1800000) && (min_uV <= 1900000)) 431 vsel = 61; 432 else if ((min_uV > 1500000) && (min_uV <= 1800000)) 433 vsel = 60; 434 else if ((min_uV > 1350000) && (min_uV <= 1500000)) 435 vsel = 59; 436 else if ((min_uV > 1300000) && (min_uV <= 1350000)) 437 vsel = 58; 438 else 439 return -EINVAL; 440 break; 441 case SMPS_OFFSET_EN: 442 if (min_uV == 0) 443 vsel = 0; 444 else if ((min_uV >= 700000) && (min_uV <= 1420000)) { 445 vsel = DIV_ROUND_UP(min_uV - 700000, 12500); 446 vsel++; 447 } 448 /* Values 1..57 for vsel are linear and can be calculated 449 * values 58..62 are non linear. 450 */ 451 else if ((min_uV > 1900000) && (min_uV <= 2100000)) 452 vsel = 62; 453 else if ((min_uV > 1800000) && (min_uV <= 1900000)) 454 vsel = 61; 455 else if ((min_uV > 1500000) && (min_uV <= 1800000)) 456 vsel = 60; 457 else if ((min_uV > 1350000) && (min_uV <= 1500000)) 458 vsel = 59; 459 else 460 return -EINVAL; 461 break; 462 case SMPS_EXTENDED_EN: 463 if (min_uV == 0) { 464 vsel = 0; 465 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) { 466 vsel = DIV_ROUND_UP(min_uV - 1852000, 38600); 467 vsel++; 468 } 469 break; 470 case SMPS_OFFSET_EN|SMPS_EXTENDED_EN: 471 if (min_uV == 0) { 472 vsel = 0; 473 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) { 474 vsel = DIV_ROUND_UP(min_uV - 2161000, 38600); 475 vsel++; 476 } 477 break; 478 } 479 480 return vsel; 481 } 482 483 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev, 484 unsigned int selector) 485 { 486 struct twlreg_info *info = rdev_get_drvdata(rdev); 487 488 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS, 489 selector); 490 } 491 492 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev) 493 { 494 struct twlreg_info *info = rdev_get_drvdata(rdev); 495 496 return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS); 497 } 498 499 static struct regulator_ops twlsmps_ops = { 500 .list_voltage = twl6030smps_list_voltage, 501 .map_voltage = twl6030smps_map_voltage, 502 503 .set_voltage_sel = twl6030smps_set_voltage_sel, 504 .get_voltage_sel = twl6030smps_get_voltage_sel, 505 506 .enable = twl6030reg_enable, 507 .disable = twl6030reg_disable, 508 .is_enabled = twl6030reg_is_enabled, 509 510 .set_mode = twl6030reg_set_mode, 511 512 .get_status = twl6030reg_get_status, 513 }; 514 515 /*----------------------------------------------------------------------*/ 516 517 #define TWL6030_ADJUSTABLE_SMPS(label) \ 518 static const struct twlreg_info TWL6030_INFO_##label = { \ 519 .desc = { \ 520 .name = #label, \ 521 .id = TWL6030_REG_##label, \ 522 .ops = &twl6030coresmps_ops, \ 523 .type = REGULATOR_VOLTAGE, \ 524 .owner = THIS_MODULE, \ 525 }, \ 526 } 527 528 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts) \ 529 static const struct twlreg_info TWL6030_INFO_##label = { \ 530 .base = offset, \ 531 .min_mV = min_mVolts, \ 532 .desc = { \ 533 .name = #label, \ 534 .id = TWL6030_REG_##label, \ 535 .n_voltages = 32, \ 536 .ops = &twl6030ldo_ops, \ 537 .type = REGULATOR_VOLTAGE, \ 538 .owner = THIS_MODULE, \ 539 }, \ 540 } 541 542 #define TWL6032_ADJUSTABLE_LDO(label, offset, min_mVolts) \ 543 static const struct twlreg_info TWL6032_INFO_##label = { \ 544 .base = offset, \ 545 .min_mV = min_mVolts, \ 546 .desc = { \ 547 .name = #label, \ 548 .id = TWL6032_REG_##label, \ 549 .n_voltages = 32, \ 550 .ops = &twl6030ldo_ops, \ 551 .type = REGULATOR_VOLTAGE, \ 552 .owner = THIS_MODULE, \ 553 }, \ 554 } 555 556 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \ 557 static const struct twlreg_info TWLFIXED_INFO_##label = { \ 558 .base = offset, \ 559 .id = 0, \ 560 .min_mV = mVolts, \ 561 .desc = { \ 562 .name = #label, \ 563 .id = TWL6030##_REG_##label, \ 564 .n_voltages = 1, \ 565 .ops = &twl6030fixed_ops, \ 566 .type = REGULATOR_VOLTAGE, \ 567 .owner = THIS_MODULE, \ 568 .min_uV = mVolts * 1000, \ 569 .enable_time = turnon_delay, \ 570 .of_map_mode = NULL, \ 571 }, \ 572 } 573 574 #define TWL6032_ADJUSTABLE_SMPS(label, offset) \ 575 static const struct twlreg_info TWLSMPS_INFO_##label = { \ 576 .base = offset, \ 577 .min_mV = 600, \ 578 .desc = { \ 579 .name = #label, \ 580 .id = TWL6032_REG_##label, \ 581 .n_voltages = 63, \ 582 .ops = &twlsmps_ops, \ 583 .type = REGULATOR_VOLTAGE, \ 584 .owner = THIS_MODULE, \ 585 }, \ 586 } 587 588 /* VUSBCP is managed *only* by the USB subchip */ 589 /* 6030 REG with base as PMC Slave Misc : 0x0030 */ 590 /* Turnon-delay and remap configuration values for 6030 are not 591 verified since the specification is not public */ 592 TWL6030_ADJUSTABLE_SMPS(VDD1); 593 TWL6030_ADJUSTABLE_SMPS(VDD2); 594 TWL6030_ADJUSTABLE_SMPS(VDD3); 595 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000); 596 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000); 597 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000); 598 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000); 599 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000); 600 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000); 601 /* 6025 are renamed compared to 6030 versions */ 602 TWL6032_ADJUSTABLE_LDO(LDO2, 0x54, 1000); 603 TWL6032_ADJUSTABLE_LDO(LDO4, 0x58, 1000); 604 TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c, 1000); 605 TWL6032_ADJUSTABLE_LDO(LDO5, 0x68, 1000); 606 TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c, 1000); 607 TWL6032_ADJUSTABLE_LDO(LDO7, 0x74, 1000); 608 TWL6032_ADJUSTABLE_LDO(LDO6, 0x60, 1000); 609 TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64, 1000); 610 TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000); 611 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0); 612 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0); 613 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0); 614 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0); 615 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0); 616 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0); 617 TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34); 618 TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10); 619 TWL6032_ADJUSTABLE_SMPS(VIO, 0x16); 620 621 static u8 twl_get_smps_offset(void) 622 { 623 u8 value; 624 625 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value, 626 TWL6030_SMPS_OFFSET); 627 return value; 628 } 629 630 static u8 twl_get_smps_mult(void) 631 { 632 u8 value; 633 634 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value, 635 TWL6030_SMPS_MULT); 636 return value; 637 } 638 639 #define TWL_OF_MATCH(comp, family, label) \ 640 { \ 641 .compatible = comp, \ 642 .data = &family##_INFO_##label, \ 643 } 644 645 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label) 646 #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label) 647 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label) 648 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label) 649 650 static const struct of_device_id twl_of_match[] = { 651 TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1), 652 TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2), 653 TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3), 654 TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030), 655 TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030), 656 TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030), 657 TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC), 658 TWL6030_OF_MATCH("ti,twl6030-vpp", VPP), 659 TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM), 660 TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2), 661 TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4), 662 TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3), 663 TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5), 664 TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1), 665 TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7), 666 TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6), 667 TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN), 668 TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB), 669 TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA), 670 TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO), 671 TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC), 672 TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB), 673 TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8), 674 TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1), 675 TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3), 676 TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4), 677 TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO), 678 {}, 679 }; 680 MODULE_DEVICE_TABLE(of, twl_of_match); 681 682 static int twlreg_probe(struct platform_device *pdev) 683 { 684 int id; 685 struct twlreg_info *info; 686 const struct twlreg_info *template; 687 struct regulator_init_data *initdata; 688 struct regulation_constraints *c; 689 struct regulator_dev *rdev; 690 const struct of_device_id *match; 691 struct regulator_config config = { }; 692 693 match = of_match_device(twl_of_match, &pdev->dev); 694 if (!match) 695 return -ENODEV; 696 697 template = match->data; 698 if (!template) 699 return -ENODEV; 700 701 id = template->desc.id; 702 initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node, 703 &template->desc); 704 if (!initdata) 705 return -EINVAL; 706 707 info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL); 708 if (!info) 709 return -ENOMEM; 710 711 /* Constrain board-specific capabilities according to what 712 * this driver and the chip itself can actually do. 713 */ 714 c = &initdata->constraints; 715 c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY; 716 c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE 717 | REGULATOR_CHANGE_MODE 718 | REGULATOR_CHANGE_STATUS; 719 720 switch (id) { 721 case TWL6032_REG_SMPS3: 722 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3) 723 info->flags |= SMPS_EXTENDED_EN; 724 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3) 725 info->flags |= SMPS_OFFSET_EN; 726 break; 727 case TWL6032_REG_SMPS4: 728 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4) 729 info->flags |= SMPS_EXTENDED_EN; 730 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4) 731 info->flags |= SMPS_OFFSET_EN; 732 break; 733 case TWL6032_REG_VIO: 734 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO) 735 info->flags |= SMPS_EXTENDED_EN; 736 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO) 737 info->flags |= SMPS_OFFSET_EN; 738 break; 739 } 740 741 config.dev = &pdev->dev; 742 config.init_data = initdata; 743 config.driver_data = info; 744 config.of_node = pdev->dev.of_node; 745 746 rdev = devm_regulator_register(&pdev->dev, &info->desc, &config); 747 if (IS_ERR(rdev)) { 748 dev_err(&pdev->dev, "can't register %s, %ld\n", 749 info->desc.name, PTR_ERR(rdev)); 750 return PTR_ERR(rdev); 751 } 752 platform_set_drvdata(pdev, rdev); 753 754 /* NOTE: many regulators support short-circuit IRQs (presentable 755 * as REGULATOR_OVER_CURRENT notifications?) configured via: 756 * - SC_CONFIG 757 * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4) 758 * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2) 759 * - IT_CONFIG 760 */ 761 762 return 0; 763 } 764 765 MODULE_ALIAS("platform:twl6030_reg"); 766 767 static struct platform_driver twlreg_driver = { 768 .probe = twlreg_probe, 769 /* NOTE: short name, to work around driver model truncation of 770 * "twl_regulator.12" (and friends) to "twl_regulator.1". 771 */ 772 .driver = { 773 .name = "twl6030_reg", 774 .of_match_table = of_match_ptr(twl_of_match), 775 }, 776 }; 777 778 static int __init twlreg_init(void) 779 { 780 return platform_driver_register(&twlreg_driver); 781 } 782 subsys_initcall(twlreg_init); 783 784 static void __exit twlreg_exit(void) 785 { 786 platform_driver_unregister(&twlreg_driver); 787 } 788 module_exit(twlreg_exit) 789 790 MODULE_DESCRIPTION("TWL6030 regulator driver"); 791 MODULE_LICENSE("GPL"); 792