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/delay.h> 24 #include <linux/slab.h> 25 #include <linux/gpio.h> 26 #include <linux/mfd/tps65910.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 milivolts */ 35 static const u16 VIO_VSEL_table[] = { 36 1500, 1800, 2500, 3300, 37 }; 38 39 /* VSEL tables for TPS65910 specific LDOs and dcdc's */ 40 41 /* supported VDD3 voltages in milivolts */ 42 static const u16 VDD3_VSEL_table[] = { 43 5000, 44 }; 45 46 /* supported VDIG1 voltages in milivolts */ 47 static const u16 VDIG1_VSEL_table[] = { 48 1200, 1500, 1800, 2700, 49 }; 50 51 /* supported VDIG2 voltages in milivolts */ 52 static const u16 VDIG2_VSEL_table[] = { 53 1000, 1100, 1200, 1800, 54 }; 55 56 /* supported VPLL voltages in milivolts */ 57 static const u16 VPLL_VSEL_table[] = { 58 1000, 1100, 1800, 2500, 59 }; 60 61 /* supported VDAC voltages in milivolts */ 62 static const u16 VDAC_VSEL_table[] = { 63 1800, 2600, 2800, 2850, 64 }; 65 66 /* supported VAUX1 voltages in milivolts */ 67 static const u16 VAUX1_VSEL_table[] = { 68 1800, 2500, 2800, 2850, 69 }; 70 71 /* supported VAUX2 voltages in milivolts */ 72 static const u16 VAUX2_VSEL_table[] = { 73 1800, 2800, 2900, 3300, 74 }; 75 76 /* supported VAUX33 voltages in milivolts */ 77 static const u16 VAUX33_VSEL_table[] = { 78 1800, 2000, 2800, 3300, 79 }; 80 81 /* supported VMMC voltages in milivolts */ 82 static const u16 VMMC_VSEL_table[] = { 83 1800, 2800, 3000, 3300, 84 }; 85 86 struct tps_info { 87 const char *name; 88 unsigned min_uV; 89 unsigned max_uV; 90 u8 n_voltages; 91 const u16 *voltage_table; 92 int enable_time_us; 93 }; 94 95 static struct tps_info tps65910_regs[] = { 96 { 97 .name = "VRTC", 98 .enable_time_us = 2200, 99 }, 100 { 101 .name = "VIO", 102 .min_uV = 1500000, 103 .max_uV = 3300000, 104 .n_voltages = ARRAY_SIZE(VIO_VSEL_table), 105 .voltage_table = VIO_VSEL_table, 106 .enable_time_us = 350, 107 }, 108 { 109 .name = "VDD1", 110 .min_uV = 600000, 111 .max_uV = 4500000, 112 .enable_time_us = 350, 113 }, 114 { 115 .name = "VDD2", 116 .min_uV = 600000, 117 .max_uV = 4500000, 118 .enable_time_us = 350, 119 }, 120 { 121 .name = "VDD3", 122 .min_uV = 5000000, 123 .max_uV = 5000000, 124 .n_voltages = ARRAY_SIZE(VDD3_VSEL_table), 125 .voltage_table = VDD3_VSEL_table, 126 .enable_time_us = 200, 127 }, 128 { 129 .name = "VDIG1", 130 .min_uV = 1200000, 131 .max_uV = 2700000, 132 .n_voltages = ARRAY_SIZE(VDIG1_VSEL_table), 133 .voltage_table = VDIG1_VSEL_table, 134 .enable_time_us = 100, 135 }, 136 { 137 .name = "VDIG2", 138 .min_uV = 1000000, 139 .max_uV = 1800000, 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 .min_uV = 1000000, 147 .max_uV = 2500000, 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 .min_uV = 1800000, 155 .max_uV = 2850000, 156 .n_voltages = ARRAY_SIZE(VDAC_VSEL_table), 157 .voltage_table = VDAC_VSEL_table, 158 .enable_time_us = 100, 159 }, 160 { 161 .name = "VAUX1", 162 .min_uV = 1800000, 163 .max_uV = 2850000, 164 .n_voltages = ARRAY_SIZE(VAUX1_VSEL_table), 165 .voltage_table = VAUX1_VSEL_table, 166 .enable_time_us = 100, 167 }, 168 { 169 .name = "VAUX2", 170 .min_uV = 1800000, 171 .max_uV = 3300000, 172 .n_voltages = ARRAY_SIZE(VAUX2_VSEL_table), 173 .voltage_table = VAUX2_VSEL_table, 174 .enable_time_us = 100, 175 }, 176 { 177 .name = "VAUX33", 178 .min_uV = 1800000, 179 .max_uV = 3300000, 180 .n_voltages = ARRAY_SIZE(VAUX33_VSEL_table), 181 .voltage_table = VAUX33_VSEL_table, 182 .enable_time_us = 100, 183 }, 184 { 185 .name = "VMMC", 186 .min_uV = 1800000, 187 .max_uV = 3300000, 188 .n_voltages = ARRAY_SIZE(VMMC_VSEL_table), 189 .voltage_table = VMMC_VSEL_table, 190 .enable_time_us = 100, 191 }, 192 }; 193 194 static struct tps_info tps65911_regs[] = { 195 { 196 .name = "VRTC", 197 .enable_time_us = 2200, 198 }, 199 { 200 .name = "VIO", 201 .min_uV = 1500000, 202 .max_uV = 3300000, 203 .n_voltages = ARRAY_SIZE(VIO_VSEL_table), 204 .voltage_table = VIO_VSEL_table, 205 .enable_time_us = 350, 206 }, 207 { 208 .name = "VDD1", 209 .min_uV = 600000, 210 .max_uV = 4500000, 211 .n_voltages = 73, 212 .enable_time_us = 350, 213 }, 214 { 215 .name = "VDD2", 216 .min_uV = 600000, 217 .max_uV = 4500000, 218 .n_voltages = 73, 219 .enable_time_us = 350, 220 }, 221 { 222 .name = "VDDCTRL", 223 .min_uV = 600000, 224 .max_uV = 1400000, 225 .n_voltages = 65, 226 .enable_time_us = 900, 227 }, 228 { 229 .name = "LDO1", 230 .min_uV = 1000000, 231 .max_uV = 3300000, 232 .n_voltages = 47, 233 .enable_time_us = 420, 234 }, 235 { 236 .name = "LDO2", 237 .min_uV = 1000000, 238 .max_uV = 3300000, 239 .n_voltages = 47, 240 .enable_time_us = 420, 241 }, 242 { 243 .name = "LDO3", 244 .min_uV = 1000000, 245 .max_uV = 3300000, 246 .n_voltages = 24, 247 .enable_time_us = 230, 248 }, 249 { 250 .name = "LDO4", 251 .min_uV = 1000000, 252 .max_uV = 3300000, 253 .n_voltages = 47, 254 .enable_time_us = 230, 255 }, 256 { 257 .name = "LDO5", 258 .min_uV = 1000000, 259 .max_uV = 3300000, 260 .n_voltages = 24, 261 .enable_time_us = 230, 262 }, 263 { 264 .name = "LDO6", 265 .min_uV = 1000000, 266 .max_uV = 3300000, 267 .n_voltages = 24, 268 .enable_time_us = 230, 269 }, 270 { 271 .name = "LDO7", 272 .min_uV = 1000000, 273 .max_uV = 3300000, 274 .n_voltages = 24, 275 .enable_time_us = 230, 276 }, 277 { 278 .name = "LDO8", 279 .min_uV = 1000000, 280 .max_uV = 3300000, 281 .n_voltages = 24, 282 .enable_time_us = 230, 283 }, 284 }; 285 286 #define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits)) 287 static unsigned int tps65910_ext_sleep_control[] = { 288 0, 289 EXT_CONTROL_REG_BITS(VIO, 1, 0), 290 EXT_CONTROL_REG_BITS(VDD1, 1, 1), 291 EXT_CONTROL_REG_BITS(VDD2, 1, 2), 292 EXT_CONTROL_REG_BITS(VDD3, 1, 3), 293 EXT_CONTROL_REG_BITS(VDIG1, 0, 1), 294 EXT_CONTROL_REG_BITS(VDIG2, 0, 2), 295 EXT_CONTROL_REG_BITS(VPLL, 0, 6), 296 EXT_CONTROL_REG_BITS(VDAC, 0, 7), 297 EXT_CONTROL_REG_BITS(VAUX1, 0, 3), 298 EXT_CONTROL_REG_BITS(VAUX2, 0, 4), 299 EXT_CONTROL_REG_BITS(VAUX33, 0, 5), 300 EXT_CONTROL_REG_BITS(VMMC, 0, 0), 301 }; 302 303 static unsigned int tps65911_ext_sleep_control[] = { 304 0, 305 EXT_CONTROL_REG_BITS(VIO, 1, 0), 306 EXT_CONTROL_REG_BITS(VDD1, 1, 1), 307 EXT_CONTROL_REG_BITS(VDD2, 1, 2), 308 EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3), 309 EXT_CONTROL_REG_BITS(LDO1, 0, 1), 310 EXT_CONTROL_REG_BITS(LDO2, 0, 2), 311 EXT_CONTROL_REG_BITS(LDO3, 0, 7), 312 EXT_CONTROL_REG_BITS(LDO4, 0, 6), 313 EXT_CONTROL_REG_BITS(LDO5, 0, 3), 314 EXT_CONTROL_REG_BITS(LDO6, 0, 0), 315 EXT_CONTROL_REG_BITS(LDO7, 0, 5), 316 EXT_CONTROL_REG_BITS(LDO8, 0, 4), 317 }; 318 319 struct tps65910_reg { 320 struct regulator_desc *desc; 321 struct tps65910 *mfd; 322 struct regulator_dev **rdev; 323 struct tps_info **info; 324 struct mutex mutex; 325 int num_regulators; 326 int mode; 327 int (*get_ctrl_reg)(int); 328 unsigned int *ext_sleep_control; 329 unsigned int board_ext_control[TPS65910_NUM_REGS]; 330 }; 331 332 static inline int tps65910_read(struct tps65910_reg *pmic, u8 reg) 333 { 334 u8 val; 335 int err; 336 337 err = pmic->mfd->read(pmic->mfd, reg, 1, &val); 338 if (err) 339 return err; 340 341 return val; 342 } 343 344 static inline int tps65910_write(struct tps65910_reg *pmic, u8 reg, u8 val) 345 { 346 return pmic->mfd->write(pmic->mfd, reg, 1, &val); 347 } 348 349 static int tps65910_modify_bits(struct tps65910_reg *pmic, u8 reg, 350 u8 set_mask, u8 clear_mask) 351 { 352 int err, data; 353 354 mutex_lock(&pmic->mutex); 355 356 data = tps65910_read(pmic, reg); 357 if (data < 0) { 358 dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg); 359 err = data; 360 goto out; 361 } 362 363 data &= ~clear_mask; 364 data |= set_mask; 365 err = tps65910_write(pmic, reg, data); 366 if (err) 367 dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg); 368 369 out: 370 mutex_unlock(&pmic->mutex); 371 return err; 372 } 373 374 static int tps65910_reg_read(struct tps65910_reg *pmic, u8 reg) 375 { 376 int data; 377 378 mutex_lock(&pmic->mutex); 379 380 data = tps65910_read(pmic, reg); 381 if (data < 0) 382 dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg); 383 384 mutex_unlock(&pmic->mutex); 385 return data; 386 } 387 388 static int tps65910_reg_write(struct tps65910_reg *pmic, u8 reg, u8 val) 389 { 390 int err; 391 392 mutex_lock(&pmic->mutex); 393 394 err = tps65910_write(pmic, reg, val); 395 if (err < 0) 396 dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg); 397 398 mutex_unlock(&pmic->mutex); 399 return err; 400 } 401 402 static int tps65910_get_ctrl_register(int id) 403 { 404 switch (id) { 405 case TPS65910_REG_VRTC: 406 return TPS65910_VRTC; 407 case TPS65910_REG_VIO: 408 return TPS65910_VIO; 409 case TPS65910_REG_VDD1: 410 return TPS65910_VDD1; 411 case TPS65910_REG_VDD2: 412 return TPS65910_VDD2; 413 case TPS65910_REG_VDD3: 414 return TPS65910_VDD3; 415 case TPS65910_REG_VDIG1: 416 return TPS65910_VDIG1; 417 case TPS65910_REG_VDIG2: 418 return TPS65910_VDIG2; 419 case TPS65910_REG_VPLL: 420 return TPS65910_VPLL; 421 case TPS65910_REG_VDAC: 422 return TPS65910_VDAC; 423 case TPS65910_REG_VAUX1: 424 return TPS65910_VAUX1; 425 case TPS65910_REG_VAUX2: 426 return TPS65910_VAUX2; 427 case TPS65910_REG_VAUX33: 428 return TPS65910_VAUX33; 429 case TPS65910_REG_VMMC: 430 return TPS65910_VMMC; 431 default: 432 return -EINVAL; 433 } 434 } 435 436 static int tps65911_get_ctrl_register(int id) 437 { 438 switch (id) { 439 case TPS65910_REG_VRTC: 440 return TPS65910_VRTC; 441 case TPS65910_REG_VIO: 442 return TPS65910_VIO; 443 case TPS65910_REG_VDD1: 444 return TPS65910_VDD1; 445 case TPS65910_REG_VDD2: 446 return TPS65910_VDD2; 447 case TPS65911_REG_VDDCTRL: 448 return TPS65911_VDDCTRL; 449 case TPS65911_REG_LDO1: 450 return TPS65911_LDO1; 451 case TPS65911_REG_LDO2: 452 return TPS65911_LDO2; 453 case TPS65911_REG_LDO3: 454 return TPS65911_LDO3; 455 case TPS65911_REG_LDO4: 456 return TPS65911_LDO4; 457 case TPS65911_REG_LDO5: 458 return TPS65911_LDO5; 459 case TPS65911_REG_LDO6: 460 return TPS65911_LDO6; 461 case TPS65911_REG_LDO7: 462 return TPS65911_LDO7; 463 case TPS65911_REG_LDO8: 464 return TPS65911_LDO8; 465 default: 466 return -EINVAL; 467 } 468 } 469 470 static int tps65910_is_enabled(struct regulator_dev *dev) 471 { 472 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 473 int reg, value, id = rdev_get_id(dev); 474 475 reg = pmic->get_ctrl_reg(id); 476 if (reg < 0) 477 return reg; 478 479 value = tps65910_reg_read(pmic, reg); 480 if (value < 0) 481 return value; 482 483 return value & TPS65910_SUPPLY_STATE_ENABLED; 484 } 485 486 static int tps65910_enable(struct regulator_dev *dev) 487 { 488 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 489 struct tps65910 *mfd = pmic->mfd; 490 int reg, id = rdev_get_id(dev); 491 492 reg = pmic->get_ctrl_reg(id); 493 if (reg < 0) 494 return reg; 495 496 return tps65910_set_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED); 497 } 498 499 static int tps65910_disable(struct regulator_dev *dev) 500 { 501 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 502 struct tps65910 *mfd = pmic->mfd; 503 int reg, id = rdev_get_id(dev); 504 505 reg = pmic->get_ctrl_reg(id); 506 if (reg < 0) 507 return reg; 508 509 return tps65910_clear_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED); 510 } 511 512 static int tps65910_enable_time(struct regulator_dev *dev) 513 { 514 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 515 int id = rdev_get_id(dev); 516 return pmic->info[id]->enable_time_us; 517 } 518 519 static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode) 520 { 521 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 522 struct tps65910 *mfd = pmic->mfd; 523 int reg, value, id = rdev_get_id(dev); 524 525 reg = pmic->get_ctrl_reg(id); 526 if (reg < 0) 527 return reg; 528 529 switch (mode) { 530 case REGULATOR_MODE_NORMAL: 531 return tps65910_modify_bits(pmic, reg, LDO_ST_ON_BIT, 532 LDO_ST_MODE_BIT); 533 case REGULATOR_MODE_IDLE: 534 value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT; 535 return tps65910_set_bits(mfd, reg, value); 536 case REGULATOR_MODE_STANDBY: 537 return tps65910_clear_bits(mfd, reg, LDO_ST_ON_BIT); 538 } 539 540 return -EINVAL; 541 } 542 543 static unsigned int tps65910_get_mode(struct regulator_dev *dev) 544 { 545 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 546 int reg, value, id = rdev_get_id(dev); 547 548 reg = pmic->get_ctrl_reg(id); 549 if (reg < 0) 550 return reg; 551 552 value = tps65910_reg_read(pmic, reg); 553 if (value < 0) 554 return value; 555 556 if (!(value & LDO_ST_ON_BIT)) 557 return REGULATOR_MODE_STANDBY; 558 else if (value & LDO_ST_MODE_BIT) 559 return REGULATOR_MODE_IDLE; 560 else 561 return REGULATOR_MODE_NORMAL; 562 } 563 564 static int tps65910_get_voltage_dcdc_sel(struct regulator_dev *dev) 565 { 566 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 567 int id = rdev_get_id(dev); 568 int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0; 569 570 switch (id) { 571 case TPS65910_REG_VDD1: 572 opvsel = tps65910_reg_read(pmic, TPS65910_VDD1_OP); 573 mult = tps65910_reg_read(pmic, TPS65910_VDD1); 574 mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT; 575 srvsel = tps65910_reg_read(pmic, TPS65910_VDD1_SR); 576 sr = opvsel & VDD1_OP_CMD_MASK; 577 opvsel &= VDD1_OP_SEL_MASK; 578 srvsel &= VDD1_SR_SEL_MASK; 579 vselmax = 75; 580 break; 581 case TPS65910_REG_VDD2: 582 opvsel = tps65910_reg_read(pmic, TPS65910_VDD2_OP); 583 mult = tps65910_reg_read(pmic, TPS65910_VDD2); 584 mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT; 585 srvsel = tps65910_reg_read(pmic, TPS65910_VDD2_SR); 586 sr = opvsel & VDD2_OP_CMD_MASK; 587 opvsel &= VDD2_OP_SEL_MASK; 588 srvsel &= VDD2_SR_SEL_MASK; 589 vselmax = 75; 590 break; 591 case TPS65911_REG_VDDCTRL: 592 opvsel = tps65910_reg_read(pmic, TPS65911_VDDCTRL_OP); 593 srvsel = tps65910_reg_read(pmic, TPS65911_VDDCTRL_SR); 594 sr = opvsel & VDDCTRL_OP_CMD_MASK; 595 opvsel &= VDDCTRL_OP_SEL_MASK; 596 srvsel &= VDDCTRL_SR_SEL_MASK; 597 vselmax = 64; 598 break; 599 } 600 601 /* multiplier 0 == 1 but 2,3 normal */ 602 if (!mult) 603 mult=1; 604 605 if (sr) { 606 /* normalise to valid range */ 607 if (srvsel < 3) 608 srvsel = 3; 609 if (srvsel > vselmax) 610 srvsel = vselmax; 611 return srvsel - 3; 612 } else { 613 614 /* normalise to valid range*/ 615 if (opvsel < 3) 616 opvsel = 3; 617 if (opvsel > vselmax) 618 opvsel = vselmax; 619 return opvsel - 3; 620 } 621 return -EINVAL; 622 } 623 624 static int tps65910_get_voltage(struct regulator_dev *dev) 625 { 626 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 627 int reg, value, id = rdev_get_id(dev), voltage = 0; 628 629 reg = pmic->get_ctrl_reg(id); 630 if (reg < 0) 631 return reg; 632 633 value = tps65910_reg_read(pmic, reg); 634 if (value < 0) 635 return value; 636 637 switch (id) { 638 case TPS65910_REG_VIO: 639 case TPS65910_REG_VDIG1: 640 case TPS65910_REG_VDIG2: 641 case TPS65910_REG_VPLL: 642 case TPS65910_REG_VDAC: 643 case TPS65910_REG_VAUX1: 644 case TPS65910_REG_VAUX2: 645 case TPS65910_REG_VAUX33: 646 case TPS65910_REG_VMMC: 647 value &= LDO_SEL_MASK; 648 value >>= LDO_SEL_SHIFT; 649 break; 650 default: 651 return -EINVAL; 652 } 653 654 voltage = pmic->info[id]->voltage_table[value] * 1000; 655 656 return voltage; 657 } 658 659 static int tps65910_get_voltage_vdd3(struct regulator_dev *dev) 660 { 661 return 5 * 1000 * 1000; 662 } 663 664 static int tps65911_get_voltage(struct regulator_dev *dev) 665 { 666 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 667 int step_mv, id = rdev_get_id(dev); 668 u8 value, reg; 669 670 reg = pmic->get_ctrl_reg(id); 671 672 value = tps65910_reg_read(pmic, reg); 673 674 switch (id) { 675 case TPS65911_REG_LDO1: 676 case TPS65911_REG_LDO2: 677 case TPS65911_REG_LDO4: 678 value &= LDO1_SEL_MASK; 679 value >>= LDO_SEL_SHIFT; 680 /* The first 5 values of the selector correspond to 1V */ 681 if (value < 5) 682 value = 0; 683 else 684 value -= 4; 685 686 step_mv = 50; 687 break; 688 case TPS65911_REG_LDO3: 689 case TPS65911_REG_LDO5: 690 case TPS65911_REG_LDO6: 691 case TPS65911_REG_LDO7: 692 case TPS65911_REG_LDO8: 693 value &= LDO3_SEL_MASK; 694 value >>= LDO_SEL_SHIFT; 695 /* The first 3 values of the selector correspond to 1V */ 696 if (value < 3) 697 value = 0; 698 else 699 value -= 2; 700 701 step_mv = 100; 702 break; 703 case TPS65910_REG_VIO: 704 value &= LDO_SEL_MASK; 705 value >>= LDO_SEL_SHIFT; 706 return pmic->info[id]->voltage_table[value] * 1000; 707 default: 708 return -EINVAL; 709 } 710 711 return (LDO_MIN_VOLT + value * step_mv) * 1000; 712 } 713 714 static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev, 715 unsigned selector) 716 { 717 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 718 int id = rdev_get_id(dev), vsel; 719 int dcdc_mult = 0; 720 721 switch (id) { 722 case TPS65910_REG_VDD1: 723 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; 724 if (dcdc_mult == 1) 725 dcdc_mult--; 726 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3; 727 728 tps65910_modify_bits(pmic, TPS65910_VDD1, 729 (dcdc_mult << VDD1_VGAIN_SEL_SHIFT), 730 VDD1_VGAIN_SEL_MASK); 731 tps65910_reg_write(pmic, TPS65910_VDD1_OP, vsel); 732 break; 733 case TPS65910_REG_VDD2: 734 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; 735 if (dcdc_mult == 1) 736 dcdc_mult--; 737 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3; 738 739 tps65910_modify_bits(pmic, TPS65910_VDD2, 740 (dcdc_mult << VDD2_VGAIN_SEL_SHIFT), 741 VDD1_VGAIN_SEL_MASK); 742 tps65910_reg_write(pmic, TPS65910_VDD2_OP, vsel); 743 break; 744 case TPS65911_REG_VDDCTRL: 745 vsel = selector + 3; 746 tps65910_reg_write(pmic, TPS65911_VDDCTRL_OP, vsel); 747 } 748 749 return 0; 750 } 751 752 static int tps65910_set_voltage_sel(struct regulator_dev *dev, 753 unsigned selector) 754 { 755 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 756 int reg, id = rdev_get_id(dev); 757 758 reg = pmic->get_ctrl_reg(id); 759 if (reg < 0) 760 return reg; 761 762 switch (id) { 763 case TPS65910_REG_VIO: 764 case TPS65910_REG_VDIG1: 765 case TPS65910_REG_VDIG2: 766 case TPS65910_REG_VPLL: 767 case TPS65910_REG_VDAC: 768 case TPS65910_REG_VAUX1: 769 case TPS65910_REG_VAUX2: 770 case TPS65910_REG_VAUX33: 771 case TPS65910_REG_VMMC: 772 return tps65910_modify_bits(pmic, reg, 773 (selector << LDO_SEL_SHIFT), LDO_SEL_MASK); 774 } 775 776 return -EINVAL; 777 } 778 779 static int tps65911_set_voltage_sel(struct regulator_dev *dev, 780 unsigned selector) 781 { 782 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 783 int reg, id = rdev_get_id(dev); 784 785 reg = pmic->get_ctrl_reg(id); 786 if (reg < 0) 787 return reg; 788 789 switch (id) { 790 case TPS65911_REG_LDO1: 791 case TPS65911_REG_LDO2: 792 case TPS65911_REG_LDO4: 793 return tps65910_modify_bits(pmic, reg, 794 (selector << LDO_SEL_SHIFT), LDO1_SEL_MASK); 795 case TPS65911_REG_LDO3: 796 case TPS65911_REG_LDO5: 797 case TPS65911_REG_LDO6: 798 case TPS65911_REG_LDO7: 799 case TPS65911_REG_LDO8: 800 return tps65910_modify_bits(pmic, reg, 801 (selector << LDO_SEL_SHIFT), LDO3_SEL_MASK); 802 case TPS65910_REG_VIO: 803 return tps65910_modify_bits(pmic, reg, 804 (selector << LDO_SEL_SHIFT), LDO_SEL_MASK); 805 } 806 807 return -EINVAL; 808 } 809 810 811 static int tps65910_list_voltage_dcdc(struct regulator_dev *dev, 812 unsigned selector) 813 { 814 int volt, mult = 1, id = rdev_get_id(dev); 815 816 switch (id) { 817 case TPS65910_REG_VDD1: 818 case TPS65910_REG_VDD2: 819 mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; 820 volt = VDD1_2_MIN_VOLT + 821 (selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET; 822 break; 823 case TPS65911_REG_VDDCTRL: 824 volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET); 825 break; 826 default: 827 BUG(); 828 return -EINVAL; 829 } 830 831 return volt * 100 * mult; 832 } 833 834 static int tps65910_list_voltage(struct regulator_dev *dev, 835 unsigned selector) 836 { 837 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 838 int id = rdev_get_id(dev), voltage; 839 840 if (id < TPS65910_REG_VIO || id > TPS65910_REG_VMMC) 841 return -EINVAL; 842 843 if (selector >= pmic->info[id]->n_voltages) 844 return -EINVAL; 845 else 846 voltage = pmic->info[id]->voltage_table[selector] * 1000; 847 848 return voltage; 849 } 850 851 static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector) 852 { 853 struct tps65910_reg *pmic = rdev_get_drvdata(dev); 854 int step_mv = 0, id = rdev_get_id(dev); 855 856 switch(id) { 857 case TPS65911_REG_LDO1: 858 case TPS65911_REG_LDO2: 859 case TPS65911_REG_LDO4: 860 /* The first 5 values of the selector correspond to 1V */ 861 if (selector < 5) 862 selector = 0; 863 else 864 selector -= 4; 865 866 step_mv = 50; 867 break; 868 case TPS65911_REG_LDO3: 869 case TPS65911_REG_LDO5: 870 case TPS65911_REG_LDO6: 871 case TPS65911_REG_LDO7: 872 case TPS65911_REG_LDO8: 873 /* The first 3 values of the selector correspond to 1V */ 874 if (selector < 3) 875 selector = 0; 876 else 877 selector -= 2; 878 879 step_mv = 100; 880 break; 881 case TPS65910_REG_VIO: 882 return pmic->info[id]->voltage_table[selector] * 1000; 883 default: 884 return -EINVAL; 885 } 886 887 return (LDO_MIN_VOLT + selector * step_mv) * 1000; 888 } 889 890 static int tps65910_set_voltage_dcdc_time_sel(struct regulator_dev *dev, 891 unsigned int old_selector, unsigned int new_selector) 892 { 893 int id = rdev_get_id(dev); 894 int old_volt, new_volt; 895 896 old_volt = tps65910_list_voltage_dcdc(dev, old_selector); 897 if (old_volt < 0) 898 return old_volt; 899 900 new_volt = tps65910_list_voltage_dcdc(dev, new_selector); 901 if (new_volt < 0) 902 return new_volt; 903 904 /* VDD1 and VDD2 are 12.5mV/us, VDDCTRL is 100mV/20us */ 905 switch (id) { 906 case TPS65910_REG_VDD1: 907 case TPS65910_REG_VDD2: 908 return DIV_ROUND_UP(abs(old_volt - new_volt), 12500); 909 case TPS65911_REG_VDDCTRL: 910 return DIV_ROUND_UP(abs(old_volt - new_volt), 5000); 911 } 912 return -EINVAL; 913 } 914 915 /* Regulator ops (except VRTC) */ 916 static struct regulator_ops tps65910_ops_dcdc = { 917 .is_enabled = tps65910_is_enabled, 918 .enable = tps65910_enable, 919 .disable = tps65910_disable, 920 .enable_time = tps65910_enable_time, 921 .set_mode = tps65910_set_mode, 922 .get_mode = tps65910_get_mode, 923 .get_voltage_sel = tps65910_get_voltage_dcdc_sel, 924 .set_voltage_sel = tps65910_set_voltage_dcdc_sel, 925 .set_voltage_time_sel = tps65910_set_voltage_dcdc_time_sel, 926 .list_voltage = tps65910_list_voltage_dcdc, 927 }; 928 929 static struct regulator_ops tps65910_ops_vdd3 = { 930 .is_enabled = tps65910_is_enabled, 931 .enable = tps65910_enable, 932 .disable = tps65910_disable, 933 .enable_time = tps65910_enable_time, 934 .set_mode = tps65910_set_mode, 935 .get_mode = tps65910_get_mode, 936 .get_voltage = tps65910_get_voltage_vdd3, 937 .list_voltage = tps65910_list_voltage, 938 }; 939 940 static struct regulator_ops tps65910_ops = { 941 .is_enabled = tps65910_is_enabled, 942 .enable = tps65910_enable, 943 .disable = tps65910_disable, 944 .enable_time = tps65910_enable_time, 945 .set_mode = tps65910_set_mode, 946 .get_mode = tps65910_get_mode, 947 .get_voltage = tps65910_get_voltage, 948 .set_voltage_sel = tps65910_set_voltage_sel, 949 .list_voltage = tps65910_list_voltage, 950 }; 951 952 static struct regulator_ops tps65911_ops = { 953 .is_enabled = tps65910_is_enabled, 954 .enable = tps65910_enable, 955 .disable = tps65910_disable, 956 .enable_time = tps65910_enable_time, 957 .set_mode = tps65910_set_mode, 958 .get_mode = tps65910_get_mode, 959 .get_voltage = tps65911_get_voltage, 960 .set_voltage_sel = tps65911_set_voltage_sel, 961 .list_voltage = tps65911_list_voltage, 962 }; 963 964 static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic, 965 int id, int ext_sleep_config) 966 { 967 struct tps65910 *mfd = pmic->mfd; 968 u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF; 969 u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF); 970 int ret; 971 972 /* 973 * Regulator can not be control from multiple external input EN1, EN2 974 * and EN3 together. 975 */ 976 if (ext_sleep_config & EXT_SLEEP_CONTROL) { 977 int en_count; 978 en_count = ((ext_sleep_config & 979 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0); 980 en_count += ((ext_sleep_config & 981 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0); 982 en_count += ((ext_sleep_config & 983 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0); 984 en_count += ((ext_sleep_config & 985 TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0); 986 if (en_count > 1) { 987 dev_err(mfd->dev, 988 "External sleep control flag is not proper\n"); 989 return -EINVAL; 990 } 991 } 992 993 pmic->board_ext_control[id] = ext_sleep_config; 994 995 /* External EN1 control */ 996 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) 997 ret = tps65910_set_bits(mfd, 998 TPS65910_EN1_LDO_ASS + regoffs, bit_pos); 999 else 1000 ret = tps65910_clear_bits(mfd, 1001 TPS65910_EN1_LDO_ASS + regoffs, bit_pos); 1002 if (ret < 0) { 1003 dev_err(mfd->dev, 1004 "Error in configuring external control EN1\n"); 1005 return ret; 1006 } 1007 1008 /* External EN2 control */ 1009 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) 1010 ret = tps65910_set_bits(mfd, 1011 TPS65910_EN2_LDO_ASS + regoffs, bit_pos); 1012 else 1013 ret = tps65910_clear_bits(mfd, 1014 TPS65910_EN2_LDO_ASS + regoffs, bit_pos); 1015 if (ret < 0) { 1016 dev_err(mfd->dev, 1017 "Error in configuring external control EN2\n"); 1018 return ret; 1019 } 1020 1021 /* External EN3 control for TPS65910 LDO only */ 1022 if ((tps65910_chip_id(mfd) == TPS65910) && 1023 (id >= TPS65910_REG_VDIG1)) { 1024 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) 1025 ret = tps65910_set_bits(mfd, 1026 TPS65910_EN3_LDO_ASS + regoffs, bit_pos); 1027 else 1028 ret = tps65910_clear_bits(mfd, 1029 TPS65910_EN3_LDO_ASS + regoffs, bit_pos); 1030 if (ret < 0) { 1031 dev_err(mfd->dev, 1032 "Error in configuring external control EN3\n"); 1033 return ret; 1034 } 1035 } 1036 1037 /* Return if no external control is selected */ 1038 if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) { 1039 /* Clear all sleep controls */ 1040 ret = tps65910_clear_bits(mfd, 1041 TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos); 1042 if (!ret) 1043 ret = tps65910_clear_bits(mfd, 1044 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos); 1045 if (ret < 0) 1046 dev_err(mfd->dev, 1047 "Error in configuring SLEEP register\n"); 1048 return ret; 1049 } 1050 1051 /* 1052 * For regulator that has separate operational and sleep register make 1053 * sure that operational is used and clear sleep register to turn 1054 * regulator off when external control is inactive 1055 */ 1056 if ((id == TPS65910_REG_VDD1) || 1057 (id == TPS65910_REG_VDD2) || 1058 ((id == TPS65911_REG_VDDCTRL) && 1059 (tps65910_chip_id(mfd) == TPS65911))) { 1060 int op_reg_add = pmic->get_ctrl_reg(id) + 1; 1061 int sr_reg_add = pmic->get_ctrl_reg(id) + 2; 1062 int opvsel = tps65910_reg_read(pmic, op_reg_add); 1063 int srvsel = tps65910_reg_read(pmic, sr_reg_add); 1064 if (opvsel & VDD1_OP_CMD_MASK) { 1065 u8 reg_val = srvsel & VDD1_OP_SEL_MASK; 1066 ret = tps65910_reg_write(pmic, op_reg_add, reg_val); 1067 if (ret < 0) { 1068 dev_err(mfd->dev, 1069 "Error in configuring op register\n"); 1070 return ret; 1071 } 1072 } 1073 ret = tps65910_reg_write(pmic, sr_reg_add, 0); 1074 if (ret < 0) { 1075 dev_err(mfd->dev, "Error in settting sr register\n"); 1076 return ret; 1077 } 1078 } 1079 1080 ret = tps65910_clear_bits(mfd, 1081 TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos); 1082 if (!ret) { 1083 if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) 1084 ret = tps65910_set_bits(mfd, 1085 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos); 1086 else 1087 ret = tps65910_clear_bits(mfd, 1088 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos); 1089 } 1090 if (ret < 0) 1091 dev_err(mfd->dev, 1092 "Error in configuring SLEEP register\n"); 1093 1094 return ret; 1095 } 1096 1097 static __devinit int tps65910_probe(struct platform_device *pdev) 1098 { 1099 struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent); 1100 struct tps_info *info; 1101 struct regulator_init_data *reg_data; 1102 struct regulator_dev *rdev; 1103 struct tps65910_reg *pmic; 1104 struct tps65910_board *pmic_plat_data; 1105 int i, err; 1106 1107 pmic_plat_data = dev_get_platdata(tps65910->dev); 1108 if (!pmic_plat_data) 1109 return -EINVAL; 1110 1111 pmic = kzalloc(sizeof(*pmic), GFP_KERNEL); 1112 if (!pmic) 1113 return -ENOMEM; 1114 1115 mutex_init(&pmic->mutex); 1116 pmic->mfd = tps65910; 1117 platform_set_drvdata(pdev, pmic); 1118 1119 /* Give control of all register to control port */ 1120 tps65910_set_bits(pmic->mfd, TPS65910_DEVCTRL, 1121 DEVCTRL_SR_CTL_I2C_SEL_MASK); 1122 1123 switch(tps65910_chip_id(tps65910)) { 1124 case TPS65910: 1125 pmic->get_ctrl_reg = &tps65910_get_ctrl_register; 1126 pmic->num_regulators = ARRAY_SIZE(tps65910_regs); 1127 pmic->ext_sleep_control = tps65910_ext_sleep_control; 1128 info = tps65910_regs; 1129 break; 1130 case TPS65911: 1131 pmic->get_ctrl_reg = &tps65911_get_ctrl_register; 1132 pmic->num_regulators = ARRAY_SIZE(tps65911_regs); 1133 pmic->ext_sleep_control = tps65911_ext_sleep_control; 1134 info = tps65911_regs; 1135 break; 1136 default: 1137 pr_err("Invalid tps chip version\n"); 1138 kfree(pmic); 1139 return -ENODEV; 1140 } 1141 1142 pmic->desc = kcalloc(pmic->num_regulators, 1143 sizeof(struct regulator_desc), GFP_KERNEL); 1144 if (!pmic->desc) { 1145 err = -ENOMEM; 1146 goto err_free_pmic; 1147 } 1148 1149 pmic->info = kcalloc(pmic->num_regulators, 1150 sizeof(struct tps_info *), GFP_KERNEL); 1151 if (!pmic->info) { 1152 err = -ENOMEM; 1153 goto err_free_desc; 1154 } 1155 1156 pmic->rdev = kcalloc(pmic->num_regulators, 1157 sizeof(struct regulator_dev *), GFP_KERNEL); 1158 if (!pmic->rdev) { 1159 err = -ENOMEM; 1160 goto err_free_info; 1161 } 1162 1163 for (i = 0; i < pmic->num_regulators && i < TPS65910_NUM_REGS; 1164 i++, info++) { 1165 1166 reg_data = pmic_plat_data->tps65910_pmic_init_data[i]; 1167 1168 /* Regulator API handles empty constraints but not NULL 1169 * constraints */ 1170 if (!reg_data) 1171 continue; 1172 1173 /* Register the regulators */ 1174 pmic->info[i] = info; 1175 1176 pmic->desc[i].name = info->name; 1177 pmic->desc[i].id = i; 1178 pmic->desc[i].n_voltages = info->n_voltages; 1179 1180 if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) { 1181 pmic->desc[i].ops = &tps65910_ops_dcdc; 1182 pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE * 1183 VDD1_2_NUM_VOLT_COARSE; 1184 } else if (i == TPS65910_REG_VDD3) { 1185 if (tps65910_chip_id(tps65910) == TPS65910) 1186 pmic->desc[i].ops = &tps65910_ops_vdd3; 1187 else 1188 pmic->desc[i].ops = &tps65910_ops_dcdc; 1189 } else { 1190 if (tps65910_chip_id(tps65910) == TPS65910) 1191 pmic->desc[i].ops = &tps65910_ops; 1192 else 1193 pmic->desc[i].ops = &tps65911_ops; 1194 } 1195 1196 err = tps65910_set_ext_sleep_config(pmic, i, 1197 pmic_plat_data->regulator_ext_sleep_control[i]); 1198 /* 1199 * Failing on regulator for configuring externally control 1200 * is not a serious issue, just throw warning. 1201 */ 1202 if (err < 0) 1203 dev_warn(tps65910->dev, 1204 "Failed to initialise ext control config\n"); 1205 1206 pmic->desc[i].type = REGULATOR_VOLTAGE; 1207 pmic->desc[i].owner = THIS_MODULE; 1208 1209 rdev = regulator_register(&pmic->desc[i], 1210 tps65910->dev, reg_data, pmic, NULL); 1211 if (IS_ERR(rdev)) { 1212 dev_err(tps65910->dev, 1213 "failed to register %s regulator\n", 1214 pdev->name); 1215 err = PTR_ERR(rdev); 1216 goto err_unregister_regulator; 1217 } 1218 1219 /* Save regulator for cleanup */ 1220 pmic->rdev[i] = rdev; 1221 } 1222 return 0; 1223 1224 err_unregister_regulator: 1225 while (--i >= 0) 1226 regulator_unregister(pmic->rdev[i]); 1227 kfree(pmic->rdev); 1228 err_free_info: 1229 kfree(pmic->info); 1230 err_free_desc: 1231 kfree(pmic->desc); 1232 err_free_pmic: 1233 kfree(pmic); 1234 return err; 1235 } 1236 1237 static int __devexit tps65910_remove(struct platform_device *pdev) 1238 { 1239 struct tps65910_reg *pmic = platform_get_drvdata(pdev); 1240 int i; 1241 1242 for (i = 0; i < pmic->num_regulators; i++) 1243 regulator_unregister(pmic->rdev[i]); 1244 1245 kfree(pmic->rdev); 1246 kfree(pmic->info); 1247 kfree(pmic->desc); 1248 kfree(pmic); 1249 return 0; 1250 } 1251 1252 static void tps65910_shutdown(struct platform_device *pdev) 1253 { 1254 struct tps65910_reg *pmic = platform_get_drvdata(pdev); 1255 int i; 1256 1257 /* 1258 * Before bootloader jumps to kernel, it makes sure that required 1259 * external control signals are in desired state so that given rails 1260 * can be configure accordingly. 1261 * If rails are configured to be controlled from external control 1262 * then before shutting down/rebooting the system, the external 1263 * control configuration need to be remove from the rails so that 1264 * its output will be available as per register programming even 1265 * if external controls are removed. This is require when the POR 1266 * value of the control signals are not in active state and before 1267 * bootloader initializes it, the system requires the rail output 1268 * to be active for booting. 1269 */ 1270 for (i = 0; i < pmic->num_regulators; i++) { 1271 int err; 1272 if (!pmic->rdev[i]) 1273 continue; 1274 1275 err = tps65910_set_ext_sleep_config(pmic, i, 0); 1276 if (err < 0) 1277 dev_err(&pdev->dev, 1278 "Error in clearing external control\n"); 1279 } 1280 } 1281 1282 static struct platform_driver tps65910_driver = { 1283 .driver = { 1284 .name = "tps65910-pmic", 1285 .owner = THIS_MODULE, 1286 }, 1287 .probe = tps65910_probe, 1288 .remove = __devexit_p(tps65910_remove), 1289 .shutdown = tps65910_shutdown, 1290 }; 1291 1292 static int __init tps65910_init(void) 1293 { 1294 return platform_driver_register(&tps65910_driver); 1295 } 1296 subsys_initcall(tps65910_init); 1297 1298 static void __exit tps65910_cleanup(void) 1299 { 1300 platform_driver_unregister(&tps65910_driver); 1301 } 1302 module_exit(tps65910_cleanup); 1303 1304 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>"); 1305 MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver"); 1306 MODULE_LICENSE("GPL v2"); 1307 MODULE_ALIAS("platform:tps65910-pmic"); 1308