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