1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * tps65910.c -- TI tps65910 4 * 5 * Copyright 2010 Texas Instruments Inc. 6 * 7 * Author: Graeme Gregory <gg@slimlogic.co.uk> 8 * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk> 9 */ 10 11 #include <linux/kernel.h> 12 #include <linux/module.h> 13 #include <linux/init.h> 14 #include <linux/err.h> 15 #include <linux/of.h> 16 #include <linux/platform_device.h> 17 #include <linux/regulator/driver.h> 18 #include <linux/regulator/machine.h> 19 #include <linux/slab.h> 20 #include <linux/gpio.h> 21 #include <linux/mfd/tps65910.h> 22 #include <linux/regulator/of_regulator.h> 23 24 #define TPS65910_SUPPLY_STATE_ENABLED 0x1 25 #define EXT_SLEEP_CONTROL (TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 | \ 26 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2 | \ 27 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3 | \ 28 TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) 29 30 /* supported VIO voltages in microvolts */ 31 static const unsigned int VIO_VSEL_table[] = { 32 1500000, 1800000, 2500000, 3300000, 33 }; 34 35 /* VSEL tables for TPS65910 specific LDOs and dcdc's */ 36 37 /* supported VRTC voltages in microvolts */ 38 static const unsigned int VRTC_VSEL_table[] = { 39 1800000, 40 }; 41 42 /* supported VDD3 voltages in microvolts */ 43 static const unsigned int VDD3_VSEL_table[] = { 44 5000000, 45 }; 46 47 /* supported VDIG1 voltages in microvolts */ 48 static const unsigned int VDIG1_VSEL_table[] = { 49 1200000, 1500000, 1800000, 2700000, 50 }; 51 52 /* supported VDIG2 voltages in microvolts */ 53 static const unsigned int VDIG2_VSEL_table[] = { 54 1000000, 1100000, 1200000, 1800000, 55 }; 56 57 /* supported VPLL voltages in microvolts */ 58 static const unsigned int VPLL_VSEL_table[] = { 59 1000000, 1100000, 1800000, 2500000, 60 }; 61 62 /* supported VDAC voltages in microvolts */ 63 static const unsigned int VDAC_VSEL_table[] = { 64 1800000, 2600000, 2800000, 2850000, 65 }; 66 67 /* supported VAUX1 voltages in microvolts */ 68 static const unsigned int VAUX1_VSEL_table[] = { 69 1800000, 2500000, 2800000, 2850000, 70 }; 71 72 /* supported VAUX2 voltages in microvolts */ 73 static const unsigned int VAUX2_VSEL_table[] = { 74 1800000, 2800000, 2900000, 3300000, 75 }; 76 77 /* supported VAUX33 voltages in microvolts */ 78 static const unsigned int VAUX33_VSEL_table[] = { 79 1800000, 2000000, 2800000, 3300000, 80 }; 81 82 /* supported VMMC voltages in microvolts */ 83 static const unsigned int VMMC_VSEL_table[] = { 84 1800000, 2800000, 3000000, 3300000, 85 }; 86 87 /* supported BBCH voltages in microvolts */ 88 static const unsigned int VBB_VSEL_table[] = { 89 3000000, 2520000, 3150000, 5000000, 90 }; 91 92 struct tps_info { 93 const char *name; 94 const char *vin_name; 95 u8 n_voltages; 96 const unsigned int *voltage_table; 97 int enable_time_us; 98 }; 99 100 static struct tps_info tps65910_regs[] = { 101 { 102 .name = "vrtc", 103 .vin_name = "vcc7", 104 .n_voltages = ARRAY_SIZE(VRTC_VSEL_table), 105 .voltage_table = VRTC_VSEL_table, 106 .enable_time_us = 2200, 107 }, 108 { 109 .name = "vio", 110 .vin_name = "vccio", 111 .n_voltages = ARRAY_SIZE(VIO_VSEL_table), 112 .voltage_table = VIO_VSEL_table, 113 .enable_time_us = 350, 114 }, 115 { 116 .name = "vdd1", 117 .vin_name = "vcc1", 118 .enable_time_us = 350, 119 }, 120 { 121 .name = "vdd2", 122 .vin_name = "vcc2", 123 .enable_time_us = 350, 124 }, 125 { 126 .name = "vdd3", 127 .n_voltages = ARRAY_SIZE(VDD3_VSEL_table), 128 .voltage_table = VDD3_VSEL_table, 129 .enable_time_us = 200, 130 }, 131 { 132 .name = "vdig1", 133 .vin_name = "vcc6", 134 .n_voltages = ARRAY_SIZE(VDIG1_VSEL_table), 135 .voltage_table = VDIG1_VSEL_table, 136 .enable_time_us = 100, 137 }, 138 { 139 .name = "vdig2", 140 .vin_name = "vcc6", 141 .n_voltages = ARRAY_SIZE(VDIG2_VSEL_table), 142 .voltage_table = VDIG2_VSEL_table, 143 .enable_time_us = 100, 144 }, 145 { 146 .name = "vpll", 147 .vin_name = "vcc5", 148 .n_voltages = ARRAY_SIZE(VPLL_VSEL_table), 149 .voltage_table = VPLL_VSEL_table, 150 .enable_time_us = 100, 151 }, 152 { 153 .name = "vdac", 154 .vin_name = "vcc5", 155 .n_voltages = ARRAY_SIZE(VDAC_VSEL_table), 156 .voltage_table = VDAC_VSEL_table, 157 .enable_time_us = 100, 158 }, 159 { 160 .name = "vaux1", 161 .vin_name = "vcc4", 162 .n_voltages = ARRAY_SIZE(VAUX1_VSEL_table), 163 .voltage_table = VAUX1_VSEL_table, 164 .enable_time_us = 100, 165 }, 166 { 167 .name = "vaux2", 168 .vin_name = "vcc4", 169 .n_voltages = ARRAY_SIZE(VAUX2_VSEL_table), 170 .voltage_table = VAUX2_VSEL_table, 171 .enable_time_us = 100, 172 }, 173 { 174 .name = "vaux33", 175 .vin_name = "vcc3", 176 .n_voltages = ARRAY_SIZE(VAUX33_VSEL_table), 177 .voltage_table = VAUX33_VSEL_table, 178 .enable_time_us = 100, 179 }, 180 { 181 .name = "vmmc", 182 .vin_name = "vcc3", 183 .n_voltages = ARRAY_SIZE(VMMC_VSEL_table), 184 .voltage_table = VMMC_VSEL_table, 185 .enable_time_us = 100, 186 }, 187 { 188 .name = "vbb", 189 .vin_name = "vcc7", 190 .n_voltages = ARRAY_SIZE(VBB_VSEL_table), 191 .voltage_table = VBB_VSEL_table, 192 }, 193 }; 194 195 static struct tps_info tps65911_regs[] = { 196 { 197 .name = "vrtc", 198 .vin_name = "vcc7", 199 .enable_time_us = 2200, 200 }, 201 { 202 .name = "vio", 203 .vin_name = "vccio", 204 .n_voltages = ARRAY_SIZE(VIO_VSEL_table), 205 .voltage_table = VIO_VSEL_table, 206 .enable_time_us = 350, 207 }, 208 { 209 .name = "vdd1", 210 .vin_name = "vcc1", 211 .n_voltages = 0x4C, 212 .enable_time_us = 350, 213 }, 214 { 215 .name = "vdd2", 216 .vin_name = "vcc2", 217 .n_voltages = 0x4C, 218 .enable_time_us = 350, 219 }, 220 { 221 .name = "vddctrl", 222 .n_voltages = 0x44, 223 .enable_time_us = 900, 224 }, 225 { 226 .name = "ldo1", 227 .vin_name = "vcc6", 228 .n_voltages = 0x33, 229 .enable_time_us = 420, 230 }, 231 { 232 .name = "ldo2", 233 .vin_name = "vcc6", 234 .n_voltages = 0x33, 235 .enable_time_us = 420, 236 }, 237 { 238 .name = "ldo3", 239 .vin_name = "vcc5", 240 .n_voltages = 0x1A, 241 .enable_time_us = 230, 242 }, 243 { 244 .name = "ldo4", 245 .vin_name = "vcc5", 246 .n_voltages = 0x33, 247 .enable_time_us = 230, 248 }, 249 { 250 .name = "ldo5", 251 .vin_name = "vcc4", 252 .n_voltages = 0x1A, 253 .enable_time_us = 230, 254 }, 255 { 256 .name = "ldo6", 257 .vin_name = "vcc3", 258 .n_voltages = 0x1A, 259 .enable_time_us = 230, 260 }, 261 { 262 .name = "ldo7", 263 .vin_name = "vcc3", 264 .n_voltages = 0x1A, 265 .enable_time_us = 230, 266 }, 267 { 268 .name = "ldo8", 269 .vin_name = "vcc3", 270 .n_voltages = 0x1A, 271 .enable_time_us = 230, 272 }, 273 }; 274 275 #define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits)) 276 static unsigned int tps65910_ext_sleep_control[] = { 277 0, 278 EXT_CONTROL_REG_BITS(VIO, 1, 0), 279 EXT_CONTROL_REG_BITS(VDD1, 1, 1), 280 EXT_CONTROL_REG_BITS(VDD2, 1, 2), 281 EXT_CONTROL_REG_BITS(VDD3, 1, 3), 282 EXT_CONTROL_REG_BITS(VDIG1, 0, 1), 283 EXT_CONTROL_REG_BITS(VDIG2, 0, 2), 284 EXT_CONTROL_REG_BITS(VPLL, 0, 6), 285 EXT_CONTROL_REG_BITS(VDAC, 0, 7), 286 EXT_CONTROL_REG_BITS(VAUX1, 0, 3), 287 EXT_CONTROL_REG_BITS(VAUX2, 0, 4), 288 EXT_CONTROL_REG_BITS(VAUX33, 0, 5), 289 EXT_CONTROL_REG_BITS(VMMC, 0, 0), 290 }; 291 292 static unsigned int tps65911_ext_sleep_control[] = { 293 0, 294 EXT_CONTROL_REG_BITS(VIO, 1, 0), 295 EXT_CONTROL_REG_BITS(VDD1, 1, 1), 296 EXT_CONTROL_REG_BITS(VDD2, 1, 2), 297 EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3), 298 EXT_CONTROL_REG_BITS(LDO1, 0, 1), 299 EXT_CONTROL_REG_BITS(LDO2, 0, 2), 300 EXT_CONTROL_REG_BITS(LDO3, 0, 7), 301 EXT_CONTROL_REG_BITS(LDO4, 0, 6), 302 EXT_CONTROL_REG_BITS(LDO5, 0, 3), 303 EXT_CONTROL_REG_BITS(LDO6, 0, 0), 304 EXT_CONTROL_REG_BITS(LDO7, 0, 5), 305 EXT_CONTROL_REG_BITS(LDO8, 0, 4), 306 }; 307 308 struct tps65910_reg { 309 struct regulator_desc *desc; 310 struct tps65910 *mfd; 311 struct regulator_dev **rdev; 312 struct tps_info **info; 313 int num_regulators; 314 int mode; 315 int (*get_ctrl_reg)(int); 316 unsigned int *ext_sleep_control; 317 unsigned int board_ext_control[TPS65910_NUM_REGS]; 318 }; 319 320 static int tps65910_get_ctrl_register(int id) 321 { 322 switch (id) { 323 case TPS65910_REG_VRTC: 324 return TPS65910_VRTC; 325 case TPS65910_REG_VIO: 326 return TPS65910_VIO; 327 case TPS65910_REG_VDD1: 328 return TPS65910_VDD1; 329 case TPS65910_REG_VDD2: 330 return TPS65910_VDD2; 331 case TPS65910_REG_VDD3: 332 return TPS65910_VDD3; 333 case TPS65910_REG_VDIG1: 334 return TPS65910_VDIG1; 335 case TPS65910_REG_VDIG2: 336 return TPS65910_VDIG2; 337 case TPS65910_REG_VPLL: 338 return TPS65910_VPLL; 339 case TPS65910_REG_VDAC: 340 return TPS65910_VDAC; 341 case TPS65910_REG_VAUX1: 342 return TPS65910_VAUX1; 343 case TPS65910_REG_VAUX2: 344 return TPS65910_VAUX2; 345 case TPS65910_REG_VAUX33: 346 return TPS65910_VAUX33; 347 case TPS65910_REG_VMMC: 348 return TPS65910_VMMC; 349 case TPS65910_REG_VBB: 350 return TPS65910_BBCH; 351 default: 352 return -EINVAL; 353 } 354 } 355 356 static int tps65911_get_ctrl_register(int id) 357 { 358 switch (id) { 359 case TPS65910_REG_VRTC: 360 return TPS65910_VRTC; 361 case TPS65910_REG_VIO: 362 return TPS65910_VIO; 363 case TPS65910_REG_VDD1: 364 return TPS65910_VDD1; 365 case TPS65910_REG_VDD2: 366 return TPS65910_VDD2; 367 case TPS65911_REG_VDDCTRL: 368 return TPS65911_VDDCTRL; 369 case TPS65911_REG_LDO1: 370 return TPS65911_LDO1; 371 case TPS65911_REG_LDO2: 372 return TPS65911_LDO2; 373 case TPS65911_REG_LDO3: 374 return TPS65911_LDO3; 375 case TPS65911_REG_LDO4: 376 return TPS65911_LDO4; 377 case TPS65911_REG_LDO5: 378 return TPS65911_LDO5; 379 case TPS65911_REG_LDO6: 380 return TPS65911_LDO6; 381 case TPS65911_REG_LDO7: 382 return TPS65911_LDO7; 383 case TPS65911_REG_LDO8: 384 return TPS65911_LDO8; 385 default: 386 return -EINVAL; 387 } 388 } 389 390 static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode) 391 { 392 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 393 struct tps65910 *mfd = pmic->mfd; 394 int reg, value, id = rdev_get_id(dev); 395 396 reg = pmic->get_ctrl_reg(id); 397 if (reg < 0) 398 return reg; 399 400 switch (mode) { 401 case REGULATOR_MODE_NORMAL: 402 return tps65910_reg_update_bits(pmic->mfd, reg, 403 LDO_ST_MODE_BIT | LDO_ST_ON_BIT, 404 LDO_ST_ON_BIT); 405 case REGULATOR_MODE_IDLE: 406 value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT; 407 return tps65910_reg_set_bits(mfd, reg, value); 408 case REGULATOR_MODE_STANDBY: 409 return tps65910_reg_clear_bits(mfd, reg, LDO_ST_ON_BIT); 410 } 411 412 return -EINVAL; 413 } 414 415 static unsigned int tps65910_get_mode(struct regulator_dev *dev) 416 { 417 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 418 int ret, reg, value, id = rdev_get_id(dev); 419 420 reg = pmic->get_ctrl_reg(id); 421 if (reg < 0) 422 return reg; 423 424 ret = tps65910_reg_read(pmic->mfd, reg, &value); 425 if (ret < 0) 426 return ret; 427 428 if (!(value & LDO_ST_ON_BIT)) 429 return REGULATOR_MODE_STANDBY; 430 else if (value & LDO_ST_MODE_BIT) 431 return REGULATOR_MODE_IDLE; 432 else 433 return REGULATOR_MODE_NORMAL; 434 } 435 436 static int tps65910_get_voltage_dcdc_sel(struct regulator_dev *dev) 437 { 438 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 439 int ret, id = rdev_get_id(dev); 440 int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0; 441 442 switch (id) { 443 case TPS65910_REG_VDD1: 444 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1_OP, &opvsel); 445 if (ret < 0) 446 return ret; 447 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1, &mult); 448 if (ret < 0) 449 return ret; 450 mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT; 451 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1_SR, &srvsel); 452 if (ret < 0) 453 return ret; 454 sr = opvsel & VDD1_OP_CMD_MASK; 455 opvsel &= VDD1_OP_SEL_MASK; 456 srvsel &= VDD1_SR_SEL_MASK; 457 vselmax = 75; 458 break; 459 case TPS65910_REG_VDD2: 460 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2_OP, &opvsel); 461 if (ret < 0) 462 return ret; 463 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2, &mult); 464 if (ret < 0) 465 return ret; 466 mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT; 467 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2_SR, &srvsel); 468 if (ret < 0) 469 return ret; 470 sr = opvsel & VDD2_OP_CMD_MASK; 471 opvsel &= VDD2_OP_SEL_MASK; 472 srvsel &= VDD2_SR_SEL_MASK; 473 vselmax = 75; 474 break; 475 case TPS65911_REG_VDDCTRL: 476 ret = tps65910_reg_read(pmic->mfd, TPS65911_VDDCTRL_OP, 477 &opvsel); 478 if (ret < 0) 479 return ret; 480 ret = tps65910_reg_read(pmic->mfd, TPS65911_VDDCTRL_SR, 481 &srvsel); 482 if (ret < 0) 483 return ret; 484 sr = opvsel & VDDCTRL_OP_CMD_MASK; 485 opvsel &= VDDCTRL_OP_SEL_MASK; 486 srvsel &= VDDCTRL_SR_SEL_MASK; 487 vselmax = 64; 488 break; 489 } 490 491 /* multiplier 0 == 1 but 2,3 normal */ 492 if (!mult) 493 mult = 1; 494 495 if (sr) { 496 /* normalise to valid range */ 497 if (srvsel < 3) 498 srvsel = 3; 499 if (srvsel > vselmax) 500 srvsel = vselmax; 501 return srvsel - 3; 502 } else { 503 504 /* normalise to valid range*/ 505 if (opvsel < 3) 506 opvsel = 3; 507 if (opvsel > vselmax) 508 opvsel = vselmax; 509 return opvsel - 3; 510 } 511 return -EINVAL; 512 } 513 514 static int tps65910_get_voltage_sel(struct regulator_dev *dev) 515 { 516 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 517 int ret, reg, value, id = rdev_get_id(dev); 518 519 reg = pmic->get_ctrl_reg(id); 520 if (reg < 0) 521 return reg; 522 523 ret = tps65910_reg_read(pmic->mfd, reg, &value); 524 if (ret < 0) 525 return ret; 526 527 switch (id) { 528 case TPS65910_REG_VIO: 529 case TPS65910_REG_VDIG1: 530 case TPS65910_REG_VDIG2: 531 case TPS65910_REG_VPLL: 532 case TPS65910_REG_VDAC: 533 case TPS65910_REG_VAUX1: 534 case TPS65910_REG_VAUX2: 535 case TPS65910_REG_VAUX33: 536 case TPS65910_REG_VMMC: 537 value &= LDO_SEL_MASK; 538 value >>= LDO_SEL_SHIFT; 539 break; 540 case TPS65910_REG_VBB: 541 value &= BBCH_BBSEL_MASK; 542 value >>= BBCH_BBSEL_SHIFT; 543 break; 544 default: 545 return -EINVAL; 546 } 547 548 return value; 549 } 550 551 static int tps65910_get_voltage_vdd3(struct regulator_dev *dev) 552 { 553 return dev->desc->volt_table[0]; 554 } 555 556 static int tps65911_get_voltage_sel(struct regulator_dev *dev) 557 { 558 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 559 int ret, id = rdev_get_id(dev); 560 unsigned int value, reg; 561 562 reg = pmic->get_ctrl_reg(id); 563 564 ret = tps65910_reg_read(pmic->mfd, reg, &value); 565 if (ret < 0) 566 return ret; 567 568 switch (id) { 569 case TPS65911_REG_LDO1: 570 case TPS65911_REG_LDO2: 571 case TPS65911_REG_LDO4: 572 value &= LDO1_SEL_MASK; 573 value >>= LDO_SEL_SHIFT; 574 break; 575 case TPS65911_REG_LDO3: 576 case TPS65911_REG_LDO5: 577 case TPS65911_REG_LDO6: 578 case TPS65911_REG_LDO7: 579 case TPS65911_REG_LDO8: 580 value &= LDO3_SEL_MASK; 581 value >>= LDO_SEL_SHIFT; 582 break; 583 case TPS65910_REG_VIO: 584 value &= LDO_SEL_MASK; 585 value >>= LDO_SEL_SHIFT; 586 break; 587 default: 588 return -EINVAL; 589 } 590 591 return value; 592 } 593 594 static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev, 595 unsigned selector) 596 { 597 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 598 int id = rdev_get_id(dev), vsel; 599 int dcdc_mult = 0; 600 601 switch (id) { 602 case TPS65910_REG_VDD1: 603 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; 604 if (dcdc_mult == 1) 605 dcdc_mult--; 606 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3; 607 608 tps65910_reg_update_bits(pmic->mfd, TPS65910_VDD1, 609 VDD1_VGAIN_SEL_MASK, 610 dcdc_mult << VDD1_VGAIN_SEL_SHIFT); 611 tps65910_reg_write(pmic->mfd, TPS65910_VDD1_OP, vsel); 612 break; 613 case TPS65910_REG_VDD2: 614 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; 615 if (dcdc_mult == 1) 616 dcdc_mult--; 617 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3; 618 619 tps65910_reg_update_bits(pmic->mfd, TPS65910_VDD2, 620 VDD1_VGAIN_SEL_MASK, 621 dcdc_mult << VDD2_VGAIN_SEL_SHIFT); 622 tps65910_reg_write(pmic->mfd, TPS65910_VDD2_OP, vsel); 623 break; 624 case TPS65911_REG_VDDCTRL: 625 vsel = selector + 3; 626 tps65910_reg_write(pmic->mfd, TPS65911_VDDCTRL_OP, vsel); 627 } 628 629 return 0; 630 } 631 632 static int tps65910_set_voltage_sel(struct regulator_dev *dev, 633 unsigned selector) 634 { 635 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 636 int reg, id = rdev_get_id(dev); 637 638 reg = pmic->get_ctrl_reg(id); 639 if (reg < 0) 640 return reg; 641 642 switch (id) { 643 case TPS65910_REG_VIO: 644 case TPS65910_REG_VDIG1: 645 case TPS65910_REG_VDIG2: 646 case TPS65910_REG_VPLL: 647 case TPS65910_REG_VDAC: 648 case TPS65910_REG_VAUX1: 649 case TPS65910_REG_VAUX2: 650 case TPS65910_REG_VAUX33: 651 case TPS65910_REG_VMMC: 652 return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK, 653 selector << LDO_SEL_SHIFT); 654 case TPS65910_REG_VBB: 655 return tps65910_reg_update_bits(pmic->mfd, reg, BBCH_BBSEL_MASK, 656 selector << BBCH_BBSEL_SHIFT); 657 } 658 659 return -EINVAL; 660 } 661 662 static int tps65911_set_voltage_sel(struct regulator_dev *dev, 663 unsigned selector) 664 { 665 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 666 int reg, id = rdev_get_id(dev); 667 668 reg = pmic->get_ctrl_reg(id); 669 if (reg < 0) 670 return reg; 671 672 switch (id) { 673 case TPS65911_REG_LDO1: 674 case TPS65911_REG_LDO2: 675 case TPS65911_REG_LDO4: 676 return tps65910_reg_update_bits(pmic->mfd, reg, LDO1_SEL_MASK, 677 selector << LDO_SEL_SHIFT); 678 case TPS65911_REG_LDO3: 679 case TPS65911_REG_LDO5: 680 case TPS65911_REG_LDO6: 681 case TPS65911_REG_LDO7: 682 case TPS65911_REG_LDO8: 683 return tps65910_reg_update_bits(pmic->mfd, reg, LDO3_SEL_MASK, 684 selector << LDO_SEL_SHIFT); 685 case TPS65910_REG_VIO: 686 return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK, 687 selector << LDO_SEL_SHIFT); 688 case TPS65910_REG_VBB: 689 return tps65910_reg_update_bits(pmic->mfd, reg, BBCH_BBSEL_MASK, 690 selector << BBCH_BBSEL_SHIFT); 691 } 692 693 return -EINVAL; 694 } 695 696 697 static int tps65910_list_voltage_dcdc(struct regulator_dev *dev, 698 unsigned selector) 699 { 700 int volt, mult = 1, id = rdev_get_id(dev); 701 702 switch (id) { 703 case TPS65910_REG_VDD1: 704 case TPS65910_REG_VDD2: 705 mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; 706 volt = VDD1_2_MIN_VOLT + 707 (selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET; 708 break; 709 case TPS65911_REG_VDDCTRL: 710 volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET); 711 break; 712 default: 713 BUG(); 714 return -EINVAL; 715 } 716 717 return volt * 100 * mult; 718 } 719 720 static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector) 721 { 722 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 723 int step_mv = 0, id = rdev_get_id(dev); 724 725 switch (id) { 726 case TPS65911_REG_LDO1: 727 case TPS65911_REG_LDO2: 728 case TPS65911_REG_LDO4: 729 /* The first 5 values of the selector correspond to 1V */ 730 if (selector < 5) 731 selector = 0; 732 else 733 selector -= 4; 734 735 step_mv = 50; 736 break; 737 case TPS65911_REG_LDO3: 738 case TPS65911_REG_LDO5: 739 case TPS65911_REG_LDO6: 740 case TPS65911_REG_LDO7: 741 case TPS65911_REG_LDO8: 742 /* The first 3 values of the selector correspond to 1V */ 743 if (selector < 3) 744 selector = 0; 745 else 746 selector -= 2; 747 748 step_mv = 100; 749 break; 750 case TPS65910_REG_VIO: 751 return pmic->info[id]->voltage_table[selector]; 752 default: 753 return -EINVAL; 754 } 755 756 return (LDO_MIN_VOLT + selector * step_mv) * 1000; 757 } 758 759 /* Regulator ops (except VRTC) */ 760 static struct regulator_ops tps65910_ops_dcdc = { 761 .is_enabled = regulator_is_enabled_regmap, 762 .enable = regulator_enable_regmap, 763 .disable = regulator_disable_regmap, 764 .set_mode = tps65910_set_mode, 765 .get_mode = tps65910_get_mode, 766 .get_voltage_sel = tps65910_get_voltage_dcdc_sel, 767 .set_voltage_sel = tps65910_set_voltage_dcdc_sel, 768 .set_voltage_time_sel = regulator_set_voltage_time_sel, 769 .list_voltage = tps65910_list_voltage_dcdc, 770 .map_voltage = regulator_map_voltage_ascend, 771 }; 772 773 static struct regulator_ops tps65910_ops_vdd3 = { 774 .is_enabled = regulator_is_enabled_regmap, 775 .enable = regulator_enable_regmap, 776 .disable = regulator_disable_regmap, 777 .set_mode = tps65910_set_mode, 778 .get_mode = tps65910_get_mode, 779 .get_voltage = tps65910_get_voltage_vdd3, 780 .list_voltage = regulator_list_voltage_table, 781 .map_voltage = regulator_map_voltage_ascend, 782 }; 783 784 static struct regulator_ops tps65910_ops_vbb = { 785 .is_enabled = regulator_is_enabled_regmap, 786 .enable = regulator_enable_regmap, 787 .disable = regulator_disable_regmap, 788 .set_mode = tps65910_set_mode, 789 .get_mode = tps65910_get_mode, 790 .get_voltage_sel = tps65910_get_voltage_sel, 791 .set_voltage_sel = tps65910_set_voltage_sel, 792 .list_voltage = regulator_list_voltage_table, 793 .map_voltage = regulator_map_voltage_iterate, 794 }; 795 796 static struct regulator_ops tps65910_ops = { 797 .is_enabled = regulator_is_enabled_regmap, 798 .enable = regulator_enable_regmap, 799 .disable = regulator_disable_regmap, 800 .set_mode = tps65910_set_mode, 801 .get_mode = tps65910_get_mode, 802 .get_voltage_sel = tps65910_get_voltage_sel, 803 .set_voltage_sel = tps65910_set_voltage_sel, 804 .list_voltage = regulator_list_voltage_table, 805 .map_voltage = regulator_map_voltage_ascend, 806 }; 807 808 static struct regulator_ops tps65911_ops = { 809 .is_enabled = regulator_is_enabled_regmap, 810 .enable = regulator_enable_regmap, 811 .disable = regulator_disable_regmap, 812 .set_mode = tps65910_set_mode, 813 .get_mode = tps65910_get_mode, 814 .get_voltage_sel = tps65911_get_voltage_sel, 815 .set_voltage_sel = tps65911_set_voltage_sel, 816 .list_voltage = tps65911_list_voltage, 817 .map_voltage = regulator_map_voltage_ascend, 818 }; 819 820 static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic, 821 int id, int ext_sleep_config) 822 { 823 struct tps65910 *mfd = pmic->mfd; 824 u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF; 825 u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF); 826 int ret; 827 828 /* 829 * Regulator can not be control from multiple external input EN1, EN2 830 * and EN3 together. 831 */ 832 if (ext_sleep_config & EXT_SLEEP_CONTROL) { 833 int en_count; 834 en_count = ((ext_sleep_config & 835 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0); 836 en_count += ((ext_sleep_config & 837 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0); 838 en_count += ((ext_sleep_config & 839 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0); 840 en_count += ((ext_sleep_config & 841 TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0); 842 if (en_count > 1) { 843 dev_err(mfd->dev, 844 "External sleep control flag is not proper\n"); 845 return -EINVAL; 846 } 847 } 848 849 pmic->board_ext_control[id] = ext_sleep_config; 850 851 /* External EN1 control */ 852 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) 853 ret = tps65910_reg_set_bits(mfd, 854 TPS65910_EN1_LDO_ASS + regoffs, bit_pos); 855 else 856 ret = tps65910_reg_clear_bits(mfd, 857 TPS65910_EN1_LDO_ASS + regoffs, bit_pos); 858 if (ret < 0) { 859 dev_err(mfd->dev, 860 "Error in configuring external control EN1\n"); 861 return ret; 862 } 863 864 /* External EN2 control */ 865 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) 866 ret = tps65910_reg_set_bits(mfd, 867 TPS65910_EN2_LDO_ASS + regoffs, bit_pos); 868 else 869 ret = tps65910_reg_clear_bits(mfd, 870 TPS65910_EN2_LDO_ASS + regoffs, bit_pos); 871 if (ret < 0) { 872 dev_err(mfd->dev, 873 "Error in configuring external control EN2\n"); 874 return ret; 875 } 876 877 /* External EN3 control for TPS65910 LDO only */ 878 if ((tps65910_chip_id(mfd) == TPS65910) && 879 (id >= TPS65910_REG_VDIG1)) { 880 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) 881 ret = tps65910_reg_set_bits(mfd, 882 TPS65910_EN3_LDO_ASS + regoffs, bit_pos); 883 else 884 ret = tps65910_reg_clear_bits(mfd, 885 TPS65910_EN3_LDO_ASS + regoffs, bit_pos); 886 if (ret < 0) { 887 dev_err(mfd->dev, 888 "Error in configuring external control EN3\n"); 889 return ret; 890 } 891 } 892 893 /* Return if no external control is selected */ 894 if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) { 895 /* Clear all sleep controls */ 896 ret = tps65910_reg_clear_bits(mfd, 897 TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos); 898 if (!ret) 899 ret = tps65910_reg_clear_bits(mfd, 900 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos); 901 if (ret < 0) 902 dev_err(mfd->dev, 903 "Error in configuring SLEEP register\n"); 904 return ret; 905 } 906 907 /* 908 * For regulator that has separate operational and sleep register make 909 * sure that operational is used and clear sleep register to turn 910 * regulator off when external control is inactive 911 */ 912 if ((id == TPS65910_REG_VDD1) || 913 (id == TPS65910_REG_VDD2) || 914 ((id == TPS65911_REG_VDDCTRL) && 915 (tps65910_chip_id(mfd) == TPS65911))) { 916 int op_reg_add = pmic->get_ctrl_reg(id) + 1; 917 int sr_reg_add = pmic->get_ctrl_reg(id) + 2; 918 int opvsel, srvsel; 919 920 ret = tps65910_reg_read(pmic->mfd, op_reg_add, &opvsel); 921 if (ret < 0) 922 return ret; 923 ret = tps65910_reg_read(pmic->mfd, sr_reg_add, &srvsel); 924 if (ret < 0) 925 return ret; 926 927 if (opvsel & VDD1_OP_CMD_MASK) { 928 u8 reg_val = srvsel & VDD1_OP_SEL_MASK; 929 930 ret = tps65910_reg_write(pmic->mfd, op_reg_add, 931 reg_val); 932 if (ret < 0) { 933 dev_err(mfd->dev, 934 "Error in configuring op register\n"); 935 return ret; 936 } 937 } 938 ret = tps65910_reg_write(pmic->mfd, sr_reg_add, 0); 939 if (ret < 0) { 940 dev_err(mfd->dev, "Error in setting sr register\n"); 941 return ret; 942 } 943 } 944 945 ret = tps65910_reg_clear_bits(mfd, 946 TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos); 947 if (!ret) { 948 if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) 949 ret = tps65910_reg_set_bits(mfd, 950 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos); 951 else 952 ret = tps65910_reg_clear_bits(mfd, 953 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos); 954 } 955 if (ret < 0) 956 dev_err(mfd->dev, 957 "Error in configuring SLEEP register\n"); 958 959 return ret; 960 } 961 962 #ifdef CONFIG_OF 963 964 static struct of_regulator_match tps65910_matches[] = { 965 { .name = "vrtc", .driver_data = (void *) &tps65910_regs[0] }, 966 { .name = "vio", .driver_data = (void *) &tps65910_regs[1] }, 967 { .name = "vdd1", .driver_data = (void *) &tps65910_regs[2] }, 968 { .name = "vdd2", .driver_data = (void *) &tps65910_regs[3] }, 969 { .name = "vdd3", .driver_data = (void *) &tps65910_regs[4] }, 970 { .name = "vdig1", .driver_data = (void *) &tps65910_regs[5] }, 971 { .name = "vdig2", .driver_data = (void *) &tps65910_regs[6] }, 972 { .name = "vpll", .driver_data = (void *) &tps65910_regs[7] }, 973 { .name = "vdac", .driver_data = (void *) &tps65910_regs[8] }, 974 { .name = "vaux1", .driver_data = (void *) &tps65910_regs[9] }, 975 { .name = "vaux2", .driver_data = (void *) &tps65910_regs[10] }, 976 { .name = "vaux33", .driver_data = (void *) &tps65910_regs[11] }, 977 { .name = "vmmc", .driver_data = (void *) &tps65910_regs[12] }, 978 { .name = "vbb", .driver_data = (void *) &tps65910_regs[13] }, 979 }; 980 981 static struct of_regulator_match tps65911_matches[] = { 982 { .name = "vrtc", .driver_data = (void *) &tps65911_regs[0] }, 983 { .name = "vio", .driver_data = (void *) &tps65911_regs[1] }, 984 { .name = "vdd1", .driver_data = (void *) &tps65911_regs[2] }, 985 { .name = "vdd2", .driver_data = (void *) &tps65911_regs[3] }, 986 { .name = "vddctrl", .driver_data = (void *) &tps65911_regs[4] }, 987 { .name = "ldo1", .driver_data = (void *) &tps65911_regs[5] }, 988 { .name = "ldo2", .driver_data = (void *) &tps65911_regs[6] }, 989 { .name = "ldo3", .driver_data = (void *) &tps65911_regs[7] }, 990 { .name = "ldo4", .driver_data = (void *) &tps65911_regs[8] }, 991 { .name = "ldo5", .driver_data = (void *) &tps65911_regs[9] }, 992 { .name = "ldo6", .driver_data = (void *) &tps65911_regs[10] }, 993 { .name = "ldo7", .driver_data = (void *) &tps65911_regs[11] }, 994 { .name = "ldo8", .driver_data = (void *) &tps65911_regs[12] }, 995 }; 996 997 static struct tps65910_board *tps65910_parse_dt_reg_data( 998 struct platform_device *pdev, 999 struct of_regulator_match **tps65910_reg_matches) 1000 { 1001 struct tps65910_board *pmic_plat_data; 1002 struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent); 1003 struct device_node *np, *regulators; 1004 struct of_regulator_match *matches; 1005 unsigned int prop; 1006 int idx = 0, ret, count; 1007 1008 pmic_plat_data = devm_kzalloc(&pdev->dev, sizeof(*pmic_plat_data), 1009 GFP_KERNEL); 1010 if (!pmic_plat_data) 1011 return NULL; 1012 1013 np = pdev->dev.parent->of_node; 1014 regulators = of_get_child_by_name(np, "regulators"); 1015 if (!regulators) { 1016 dev_err(&pdev->dev, "regulator node not found\n"); 1017 return NULL; 1018 } 1019 1020 switch (tps65910_chip_id(tps65910)) { 1021 case TPS65910: 1022 count = ARRAY_SIZE(tps65910_matches); 1023 matches = tps65910_matches; 1024 break; 1025 case TPS65911: 1026 count = ARRAY_SIZE(tps65911_matches); 1027 matches = tps65911_matches; 1028 break; 1029 default: 1030 of_node_put(regulators); 1031 dev_err(&pdev->dev, "Invalid tps chip version\n"); 1032 return NULL; 1033 } 1034 1035 ret = of_regulator_match(&pdev->dev, regulators, matches, count); 1036 of_node_put(regulators); 1037 if (ret < 0) { 1038 dev_err(&pdev->dev, "Error parsing regulator init data: %d\n", 1039 ret); 1040 return NULL; 1041 } 1042 1043 *tps65910_reg_matches = matches; 1044 1045 for (idx = 0; idx < count; idx++) { 1046 if (!matches[idx].of_node) 1047 continue; 1048 1049 pmic_plat_data->tps65910_pmic_init_data[idx] = 1050 matches[idx].init_data; 1051 1052 ret = of_property_read_u32(matches[idx].of_node, 1053 "ti,regulator-ext-sleep-control", &prop); 1054 if (!ret) 1055 pmic_plat_data->regulator_ext_sleep_control[idx] = prop; 1056 1057 } 1058 1059 return pmic_plat_data; 1060 } 1061 #else 1062 static inline struct tps65910_board *tps65910_parse_dt_reg_data( 1063 struct platform_device *pdev, 1064 struct of_regulator_match **tps65910_reg_matches) 1065 { 1066 *tps65910_reg_matches = NULL; 1067 return NULL; 1068 } 1069 #endif 1070 1071 static int tps65910_probe(struct platform_device *pdev) 1072 { 1073 struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent); 1074 struct regulator_config config = { }; 1075 struct tps_info *info; 1076 struct regulator_dev *rdev; 1077 struct tps65910_reg *pmic; 1078 struct tps65910_board *pmic_plat_data; 1079 struct of_regulator_match *tps65910_reg_matches = NULL; 1080 int i, err; 1081 1082 pmic_plat_data = dev_get_platdata(tps65910->dev); 1083 if (!pmic_plat_data && tps65910->dev->of_node) 1084 pmic_plat_data = tps65910_parse_dt_reg_data(pdev, 1085 &tps65910_reg_matches); 1086 1087 if (!pmic_plat_data) { 1088 dev_err(&pdev->dev, "Platform data not found\n"); 1089 return -EINVAL; 1090 } 1091 1092 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL); 1093 if (!pmic) 1094 return -ENOMEM; 1095 1096 pmic->mfd = tps65910; 1097 platform_set_drvdata(pdev, pmic); 1098 1099 /* Give control of all register to control port */ 1100 err = tps65910_reg_set_bits(pmic->mfd, TPS65910_DEVCTRL, 1101 DEVCTRL_SR_CTL_I2C_SEL_MASK); 1102 if (err < 0) 1103 return err; 1104 1105 switch (tps65910_chip_id(tps65910)) { 1106 case TPS65910: 1107 BUILD_BUG_ON(TPS65910_NUM_REGS < ARRAY_SIZE(tps65910_regs)); 1108 pmic->get_ctrl_reg = &tps65910_get_ctrl_register; 1109 pmic->num_regulators = ARRAY_SIZE(tps65910_regs); 1110 pmic->ext_sleep_control = tps65910_ext_sleep_control; 1111 info = tps65910_regs; 1112 /* Work around silicon erratum SWCZ010: output programmed 1113 * voltage level can go higher than expected or crash 1114 * Workaround: use no synchronization of DCDC clocks 1115 */ 1116 tps65910_reg_clear_bits(pmic->mfd, TPS65910_DCDCCTRL, 1117 DCDCCTRL_DCDCCKSYNC_MASK); 1118 break; 1119 case TPS65911: 1120 BUILD_BUG_ON(TPS65910_NUM_REGS < ARRAY_SIZE(tps65911_regs)); 1121 pmic->get_ctrl_reg = &tps65911_get_ctrl_register; 1122 pmic->num_regulators = ARRAY_SIZE(tps65911_regs); 1123 pmic->ext_sleep_control = tps65911_ext_sleep_control; 1124 info = tps65911_regs; 1125 break; 1126 default: 1127 dev_err(&pdev->dev, "Invalid tps chip version\n"); 1128 return -ENODEV; 1129 } 1130 1131 pmic->desc = devm_kcalloc(&pdev->dev, 1132 pmic->num_regulators, 1133 sizeof(struct regulator_desc), 1134 GFP_KERNEL); 1135 if (!pmic->desc) 1136 return -ENOMEM; 1137 1138 pmic->info = devm_kcalloc(&pdev->dev, 1139 pmic->num_regulators, 1140 sizeof(struct tps_info *), 1141 GFP_KERNEL); 1142 if (!pmic->info) 1143 return -ENOMEM; 1144 1145 pmic->rdev = devm_kcalloc(&pdev->dev, 1146 pmic->num_regulators, 1147 sizeof(struct regulator_dev *), 1148 GFP_KERNEL); 1149 if (!pmic->rdev) 1150 return -ENOMEM; 1151 1152 for (i = 0; i < pmic->num_regulators; i++, info++) { 1153 /* Register the regulators */ 1154 pmic->info[i] = info; 1155 1156 pmic->desc[i].name = info->name; 1157 pmic->desc[i].supply_name = info->vin_name; 1158 pmic->desc[i].id = i; 1159 pmic->desc[i].n_voltages = info->n_voltages; 1160 pmic->desc[i].enable_time = info->enable_time_us; 1161 1162 if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) { 1163 pmic->desc[i].ops = &tps65910_ops_dcdc; 1164 pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE * 1165 VDD1_2_NUM_VOLT_COARSE; 1166 pmic->desc[i].ramp_delay = 12500; 1167 } else if (i == TPS65910_REG_VDD3) { 1168 if (tps65910_chip_id(tps65910) == TPS65910) { 1169 pmic->desc[i].ops = &tps65910_ops_vdd3; 1170 pmic->desc[i].volt_table = info->voltage_table; 1171 } else { 1172 pmic->desc[i].ops = &tps65910_ops_dcdc; 1173 pmic->desc[i].ramp_delay = 5000; 1174 } 1175 } else if (i == TPS65910_REG_VBB && 1176 tps65910_chip_id(tps65910) == TPS65910) { 1177 pmic->desc[i].ops = &tps65910_ops_vbb; 1178 pmic->desc[i].volt_table = info->voltage_table; 1179 } else { 1180 if (tps65910_chip_id(tps65910) == TPS65910) { 1181 pmic->desc[i].ops = &tps65910_ops; 1182 pmic->desc[i].volt_table = info->voltage_table; 1183 } else { 1184 pmic->desc[i].ops = &tps65911_ops; 1185 } 1186 } 1187 1188 err = tps65910_set_ext_sleep_config(pmic, i, 1189 pmic_plat_data->regulator_ext_sleep_control[i]); 1190 /* 1191 * Failing on regulator for configuring externally control 1192 * is not a serious issue, just throw warning. 1193 */ 1194 if (err < 0) 1195 dev_warn(tps65910->dev, 1196 "Failed to initialise ext control config\n"); 1197 1198 pmic->desc[i].type = REGULATOR_VOLTAGE; 1199 pmic->desc[i].owner = THIS_MODULE; 1200 pmic->desc[i].enable_reg = pmic->get_ctrl_reg(i); 1201 pmic->desc[i].enable_mask = TPS65910_SUPPLY_STATE_ENABLED; 1202 1203 config.dev = tps65910->dev; 1204 config.init_data = pmic_plat_data->tps65910_pmic_init_data[i]; 1205 config.driver_data = pmic; 1206 config.regmap = tps65910->regmap; 1207 1208 if (tps65910_reg_matches) 1209 config.of_node = tps65910_reg_matches[i].of_node; 1210 1211 rdev = devm_regulator_register(&pdev->dev, &pmic->desc[i], 1212 &config); 1213 if (IS_ERR(rdev)) { 1214 dev_err(tps65910->dev, 1215 "failed to register %s regulator\n", 1216 pdev->name); 1217 return PTR_ERR(rdev); 1218 } 1219 1220 /* Save regulator for cleanup */ 1221 pmic->rdev[i] = rdev; 1222 } 1223 return 0; 1224 } 1225 1226 static void tps65910_shutdown(struct platform_device *pdev) 1227 { 1228 struct tps65910_reg *pmic = platform_get_drvdata(pdev); 1229 int i; 1230 1231 /* 1232 * Before bootloader jumps to kernel, it makes sure that required 1233 * external control signals are in desired state so that given rails 1234 * can be configure accordingly. 1235 * If rails are configured to be controlled from external control 1236 * then before shutting down/rebooting the system, the external 1237 * control configuration need to be remove from the rails so that 1238 * its output will be available as per register programming even 1239 * if external controls are removed. This is require when the POR 1240 * value of the control signals are not in active state and before 1241 * bootloader initializes it, the system requires the rail output 1242 * to be active for booting. 1243 */ 1244 for (i = 0; i < pmic->num_regulators; i++) { 1245 int err; 1246 if (!pmic->rdev[i]) 1247 continue; 1248 1249 err = tps65910_set_ext_sleep_config(pmic, i, 0); 1250 if (err < 0) 1251 dev_err(&pdev->dev, 1252 "Error in clearing external control\n"); 1253 } 1254 } 1255 1256 static struct platform_driver tps65910_driver = { 1257 .driver = { 1258 .name = "tps65910-pmic", 1259 }, 1260 .probe = tps65910_probe, 1261 .shutdown = tps65910_shutdown, 1262 }; 1263 1264 static int __init tps65910_init(void) 1265 { 1266 return platform_driver_register(&tps65910_driver); 1267 } 1268 subsys_initcall(tps65910_init); 1269 1270 static void __exit tps65910_cleanup(void) 1271 { 1272 platform_driver_unregister(&tps65910_driver); 1273 } 1274 module_exit(tps65910_cleanup); 1275 1276 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>"); 1277 MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver"); 1278 MODULE_LICENSE("GPL v2"); 1279 MODULE_ALIAS("platform:tps65910-pmic"); 1280