1 /* 2 * Driver for Regulator part of Palmas PMIC Chips 3 * 4 * Copyright 2011-2012 Texas Instruments Inc. 5 * 6 * Author: Graeme Gregory <gg@slimlogic.co.uk> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or (at your 11 * option) any later version. 12 * 13 */ 14 15 #include <linux/kernel.h> 16 #include <linux/module.h> 17 #include <linux/init.h> 18 #include <linux/err.h> 19 #include <linux/platform_device.h> 20 #include <linux/regulator/driver.h> 21 #include <linux/regulator/machine.h> 22 #include <linux/slab.h> 23 #include <linux/regmap.h> 24 #include <linux/mfd/palmas.h> 25 #include <linux/of.h> 26 #include <linux/of_platform.h> 27 #include <linux/regulator/of_regulator.h> 28 29 struct regs_info { 30 char *name; 31 u8 vsel_addr; 32 u8 ctrl_addr; 33 u8 tstep_addr; 34 }; 35 36 static const struct regs_info palmas_regs_info[] = { 37 { 38 .name = "SMPS12", 39 .vsel_addr = PALMAS_SMPS12_VOLTAGE, 40 .ctrl_addr = PALMAS_SMPS12_CTRL, 41 .tstep_addr = PALMAS_SMPS12_TSTEP, 42 }, 43 { 44 .name = "SMPS123", 45 .vsel_addr = PALMAS_SMPS12_VOLTAGE, 46 .ctrl_addr = PALMAS_SMPS12_CTRL, 47 .tstep_addr = PALMAS_SMPS12_TSTEP, 48 }, 49 { 50 .name = "SMPS3", 51 .vsel_addr = PALMAS_SMPS3_VOLTAGE, 52 .ctrl_addr = PALMAS_SMPS3_CTRL, 53 }, 54 { 55 .name = "SMPS45", 56 .vsel_addr = PALMAS_SMPS45_VOLTAGE, 57 .ctrl_addr = PALMAS_SMPS45_CTRL, 58 .tstep_addr = PALMAS_SMPS45_TSTEP, 59 }, 60 { 61 .name = "SMPS457", 62 .vsel_addr = PALMAS_SMPS45_VOLTAGE, 63 .ctrl_addr = PALMAS_SMPS45_CTRL, 64 .tstep_addr = PALMAS_SMPS45_TSTEP, 65 }, 66 { 67 .name = "SMPS6", 68 .vsel_addr = PALMAS_SMPS6_VOLTAGE, 69 .ctrl_addr = PALMAS_SMPS6_CTRL, 70 .tstep_addr = PALMAS_SMPS6_TSTEP, 71 }, 72 { 73 .name = "SMPS7", 74 .vsel_addr = PALMAS_SMPS7_VOLTAGE, 75 .ctrl_addr = PALMAS_SMPS7_CTRL, 76 }, 77 { 78 .name = "SMPS8", 79 .vsel_addr = PALMAS_SMPS8_VOLTAGE, 80 .ctrl_addr = PALMAS_SMPS8_CTRL, 81 .tstep_addr = PALMAS_SMPS8_TSTEP, 82 }, 83 { 84 .name = "SMPS9", 85 .vsel_addr = PALMAS_SMPS9_VOLTAGE, 86 .ctrl_addr = PALMAS_SMPS9_CTRL, 87 }, 88 { 89 .name = "SMPS10", 90 }, 91 { 92 .name = "LDO1", 93 .vsel_addr = PALMAS_LDO1_VOLTAGE, 94 .ctrl_addr = PALMAS_LDO1_CTRL, 95 }, 96 { 97 .name = "LDO2", 98 .vsel_addr = PALMAS_LDO2_VOLTAGE, 99 .ctrl_addr = PALMAS_LDO2_CTRL, 100 }, 101 { 102 .name = "LDO3", 103 .vsel_addr = PALMAS_LDO3_VOLTAGE, 104 .ctrl_addr = PALMAS_LDO3_CTRL, 105 }, 106 { 107 .name = "LDO4", 108 .vsel_addr = PALMAS_LDO4_VOLTAGE, 109 .ctrl_addr = PALMAS_LDO4_CTRL, 110 }, 111 { 112 .name = "LDO5", 113 .vsel_addr = PALMAS_LDO5_VOLTAGE, 114 .ctrl_addr = PALMAS_LDO5_CTRL, 115 }, 116 { 117 .name = "LDO6", 118 .vsel_addr = PALMAS_LDO6_VOLTAGE, 119 .ctrl_addr = PALMAS_LDO6_CTRL, 120 }, 121 { 122 .name = "LDO7", 123 .vsel_addr = PALMAS_LDO7_VOLTAGE, 124 .ctrl_addr = PALMAS_LDO7_CTRL, 125 }, 126 { 127 .name = "LDO8", 128 .vsel_addr = PALMAS_LDO8_VOLTAGE, 129 .ctrl_addr = PALMAS_LDO8_CTRL, 130 }, 131 { 132 .name = "LDO9", 133 .vsel_addr = PALMAS_LDO9_VOLTAGE, 134 .ctrl_addr = PALMAS_LDO9_CTRL, 135 }, 136 { 137 .name = "LDOLN", 138 .vsel_addr = PALMAS_LDOLN_VOLTAGE, 139 .ctrl_addr = PALMAS_LDOLN_CTRL, 140 }, 141 { 142 .name = "LDOUSB", 143 .vsel_addr = PALMAS_LDOUSB_VOLTAGE, 144 .ctrl_addr = PALMAS_LDOUSB_CTRL, 145 }, 146 }; 147 148 #define SMPS_CTRL_MODE_OFF 0x00 149 #define SMPS_CTRL_MODE_ON 0x01 150 #define SMPS_CTRL_MODE_ECO 0x02 151 #define SMPS_CTRL_MODE_PWM 0x03 152 153 /* These values are derived from the data sheet. And are the number of steps 154 * where there is a voltage change, the ranges at beginning and end of register 155 * max/min values where there are no change are ommitted. 156 * 157 * So they are basically (maxV-minV)/stepV 158 */ 159 #define PALMAS_SMPS_NUM_VOLTAGES 116 160 #define PALMAS_SMPS10_NUM_VOLTAGES 2 161 #define PALMAS_LDO_NUM_VOLTAGES 50 162 163 #define SMPS10_VSEL (1<<3) 164 #define SMPS10_BOOST_EN (1<<2) 165 #define SMPS10_BYPASS_EN (1<<1) 166 #define SMPS10_SWITCH_EN (1<<0) 167 168 #define REGULATOR_SLAVE 0 169 170 static int palmas_smps_read(struct palmas *palmas, unsigned int reg, 171 unsigned int *dest) 172 { 173 unsigned int addr; 174 175 addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg); 176 177 return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest); 178 } 179 180 static int palmas_smps_write(struct palmas *palmas, unsigned int reg, 181 unsigned int value) 182 { 183 unsigned int addr; 184 185 addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg); 186 187 return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value); 188 } 189 190 static int palmas_ldo_read(struct palmas *palmas, unsigned int reg, 191 unsigned int *dest) 192 { 193 unsigned int addr; 194 195 addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg); 196 197 return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest); 198 } 199 200 static int palmas_ldo_write(struct palmas *palmas, unsigned int reg, 201 unsigned int value) 202 { 203 unsigned int addr; 204 205 addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg); 206 207 return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value); 208 } 209 210 static int palmas_is_enabled_smps(struct regulator_dev *dev) 211 { 212 struct palmas_pmic *pmic = rdev_get_drvdata(dev); 213 int id = rdev_get_id(dev); 214 unsigned int reg; 215 216 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); 217 218 reg &= PALMAS_SMPS12_CTRL_STATUS_MASK; 219 reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT; 220 221 return !!(reg); 222 } 223 224 static int palmas_enable_smps(struct regulator_dev *dev) 225 { 226 struct palmas_pmic *pmic = rdev_get_drvdata(dev); 227 int id = rdev_get_id(dev); 228 unsigned int reg; 229 230 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); 231 232 reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK; 233 reg |= SMPS_CTRL_MODE_ON; 234 235 palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg); 236 237 return 0; 238 } 239 240 static int palmas_disable_smps(struct regulator_dev *dev) 241 { 242 struct palmas_pmic *pmic = rdev_get_drvdata(dev); 243 int id = rdev_get_id(dev); 244 unsigned int reg; 245 246 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); 247 248 reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK; 249 250 palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg); 251 252 return 0; 253 } 254 255 256 static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode) 257 { 258 struct palmas_pmic *pmic = rdev_get_drvdata(dev); 259 int id = rdev_get_id(dev); 260 unsigned int reg; 261 262 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); 263 reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK; 264 265 switch (mode) { 266 case REGULATOR_MODE_NORMAL: 267 reg |= SMPS_CTRL_MODE_ON; 268 break; 269 case REGULATOR_MODE_IDLE: 270 reg |= SMPS_CTRL_MODE_ECO; 271 break; 272 case REGULATOR_MODE_FAST: 273 reg |= SMPS_CTRL_MODE_PWM; 274 break; 275 default: 276 return -EINVAL; 277 } 278 palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg); 279 280 return 0; 281 } 282 283 static unsigned int palmas_get_mode_smps(struct regulator_dev *dev) 284 { 285 struct palmas_pmic *pmic = rdev_get_drvdata(dev); 286 int id = rdev_get_id(dev); 287 unsigned int reg; 288 289 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); 290 reg &= PALMAS_SMPS12_CTRL_STATUS_MASK; 291 reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT; 292 293 switch (reg) { 294 case SMPS_CTRL_MODE_ON: 295 return REGULATOR_MODE_NORMAL; 296 case SMPS_CTRL_MODE_ECO: 297 return REGULATOR_MODE_IDLE; 298 case SMPS_CTRL_MODE_PWM: 299 return REGULATOR_MODE_FAST; 300 } 301 302 return 0; 303 } 304 305 static int palmas_list_voltage_smps(struct regulator_dev *dev, 306 unsigned selector) 307 { 308 struct palmas_pmic *pmic = rdev_get_drvdata(dev); 309 int id = rdev_get_id(dev); 310 int mult = 1; 311 312 /* Read the multiplier set in VSEL register to return 313 * the correct voltage. 314 */ 315 if (pmic->range[id]) 316 mult = 2; 317 318 if (selector == 0) 319 return 0; 320 else if (selector < 6) 321 return 500000 * mult; 322 else 323 /* Voltage is linear mapping starting from selector 6, 324 * volt = (0.49V + ((selector - 5) * 0.01V)) * RANGE 325 * RANGE is either x1 or x2 326 */ 327 return (490000 + ((selector - 5) * 10000)) * mult; 328 } 329 330 static int palmas_map_voltage_smps(struct regulator_dev *rdev, 331 int min_uV, int max_uV) 332 { 333 struct palmas_pmic *pmic = rdev_get_drvdata(rdev); 334 int id = rdev_get_id(rdev); 335 int ret, voltage; 336 337 if (min_uV == 0) 338 return 0; 339 340 if (pmic->range[id]) { /* RANGE is x2 */ 341 if (min_uV < 1000000) 342 min_uV = 1000000; 343 ret = DIV_ROUND_UP(min_uV - 1000000, 20000) + 6; 344 } else { /* RANGE is x1 */ 345 if (min_uV < 500000) 346 min_uV = 500000; 347 ret = DIV_ROUND_UP(min_uV - 500000, 10000) + 6; 348 } 349 350 /* Map back into a voltage to verify we're still in bounds */ 351 voltage = palmas_list_voltage_smps(rdev, ret); 352 if (voltage < min_uV || voltage > max_uV) 353 return -EINVAL; 354 355 return ret; 356 } 357 358 static struct regulator_ops palmas_ops_smps = { 359 .is_enabled = palmas_is_enabled_smps, 360 .enable = palmas_enable_smps, 361 .disable = palmas_disable_smps, 362 .set_mode = palmas_set_mode_smps, 363 .get_mode = palmas_get_mode_smps, 364 .get_voltage_sel = regulator_get_voltage_sel_regmap, 365 .set_voltage_sel = regulator_set_voltage_sel_regmap, 366 .list_voltage = palmas_list_voltage_smps, 367 .map_voltage = palmas_map_voltage_smps, 368 }; 369 370 static struct regulator_ops palmas_ops_smps10 = { 371 .is_enabled = regulator_is_enabled_regmap, 372 .enable = regulator_enable_regmap, 373 .disable = regulator_disable_regmap, 374 .get_voltage_sel = regulator_get_voltage_sel_regmap, 375 .set_voltage_sel = regulator_set_voltage_sel_regmap, 376 .list_voltage = regulator_list_voltage_linear, 377 .map_voltage = regulator_map_voltage_linear, 378 }; 379 380 static int palmas_is_enabled_ldo(struct regulator_dev *dev) 381 { 382 struct palmas_pmic *pmic = rdev_get_drvdata(dev); 383 int id = rdev_get_id(dev); 384 unsigned int reg; 385 386 palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); 387 388 reg &= PALMAS_LDO1_CTRL_STATUS; 389 390 return !!(reg); 391 } 392 393 static struct regulator_ops palmas_ops_ldo = { 394 .is_enabled = palmas_is_enabled_ldo, 395 .enable = regulator_enable_regmap, 396 .disable = regulator_disable_regmap, 397 .get_voltage_sel = regulator_get_voltage_sel_regmap, 398 .set_voltage_sel = regulator_set_voltage_sel_regmap, 399 .list_voltage = regulator_list_voltage_linear, 400 .map_voltage = regulator_map_voltage_linear, 401 }; 402 403 /* 404 * setup the hardware based sleep configuration of the SMPS/LDO regulators 405 * from the platform data. This is different to the software based control 406 * supported by the regulator framework as it is controlled by toggling 407 * pins on the PMIC such as PREQ, SYSEN, ... 408 */ 409 static int palmas_smps_init(struct palmas *palmas, int id, 410 struct palmas_reg_init *reg_init) 411 { 412 unsigned int reg; 413 unsigned int addr; 414 int ret; 415 416 addr = palmas_regs_info[id].ctrl_addr; 417 418 ret = palmas_smps_read(palmas, addr, ®); 419 if (ret) 420 return ret; 421 422 switch (id) { 423 case PALMAS_REG_SMPS10: 424 if (reg_init->mode_sleep) { 425 reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK; 426 reg |= reg_init->mode_sleep << 427 PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT; 428 } 429 break; 430 default: 431 if (reg_init->warm_reset) 432 reg |= PALMAS_SMPS12_CTRL_WR_S; 433 434 if (reg_init->roof_floor) 435 reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN; 436 437 if (reg_init->mode_sleep) { 438 reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK; 439 reg |= reg_init->mode_sleep << 440 PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT; 441 } 442 } 443 444 ret = palmas_smps_write(palmas, addr, reg); 445 if (ret) 446 return ret; 447 448 if (palmas_regs_info[id].tstep_addr && reg_init->tstep) { 449 addr = palmas_regs_info[id].tstep_addr; 450 451 reg = reg_init->tstep & PALMAS_SMPS12_TSTEP_TSTEP_MASK; 452 453 ret = palmas_smps_write(palmas, addr, reg); 454 if (ret) 455 return ret; 456 } 457 458 if (palmas_regs_info[id].vsel_addr && reg_init->vsel) { 459 addr = palmas_regs_info[id].vsel_addr; 460 461 reg = reg_init->vsel; 462 463 ret = palmas_smps_write(palmas, addr, reg); 464 if (ret) 465 return ret; 466 } 467 468 469 return 0; 470 } 471 472 static int palmas_ldo_init(struct palmas *palmas, int id, 473 struct palmas_reg_init *reg_init) 474 { 475 unsigned int reg; 476 unsigned int addr; 477 int ret; 478 479 addr = palmas_regs_info[id].ctrl_addr; 480 481 ret = palmas_ldo_read(palmas, addr, ®); 482 if (ret) 483 return ret; 484 485 if (reg_init->warm_reset) 486 reg |= PALMAS_LDO1_CTRL_WR_S; 487 488 if (reg_init->mode_sleep) 489 reg |= PALMAS_LDO1_CTRL_MODE_SLEEP; 490 491 ret = palmas_ldo_write(palmas, addr, reg); 492 if (ret) 493 return ret; 494 495 return 0; 496 } 497 498 static struct of_regulator_match palmas_matches[] = { 499 { .name = "smps12", }, 500 { .name = "smps123", }, 501 { .name = "smps3", }, 502 { .name = "smps45", }, 503 { .name = "smps457", }, 504 { .name = "smps6", }, 505 { .name = "smps7", }, 506 { .name = "smps8", }, 507 { .name = "smps9", }, 508 { .name = "smps10", }, 509 { .name = "ldo1", }, 510 { .name = "ldo2", }, 511 { .name = "ldo3", }, 512 { .name = "ldo4", }, 513 { .name = "ldo5", }, 514 { .name = "ldo6", }, 515 { .name = "ldo7", }, 516 { .name = "ldo8", }, 517 { .name = "ldo9", }, 518 { .name = "ldoln", }, 519 { .name = "ldousb", }, 520 }; 521 522 static void palmas_dt_to_pdata(struct device *dev, 523 struct device_node *node, 524 struct palmas_pmic_platform_data *pdata) 525 { 526 struct device_node *regulators; 527 u32 prop; 528 int idx, ret; 529 530 regulators = of_find_node_by_name(node, "regulators"); 531 if (!regulators) { 532 dev_info(dev, "regulator node not found\n"); 533 return; 534 } 535 536 ret = of_regulator_match(dev, regulators, palmas_matches, 537 PALMAS_NUM_REGS); 538 if (ret < 0) { 539 dev_err(dev, "Error parsing regulator init data: %d\n", ret); 540 return; 541 } 542 543 for (idx = 0; idx < PALMAS_NUM_REGS; idx++) { 544 if (!palmas_matches[idx].init_data || 545 !palmas_matches[idx].of_node) 546 continue; 547 548 pdata->reg_data[idx] = palmas_matches[idx].init_data; 549 550 pdata->reg_init[idx] = devm_kzalloc(dev, 551 sizeof(struct palmas_reg_init), GFP_KERNEL); 552 553 ret = of_property_read_u32(palmas_matches[idx].of_node, 554 "ti,warm_reset", &prop); 555 if (!ret) 556 pdata->reg_init[idx]->warm_reset = prop; 557 558 ret = of_property_read_u32(palmas_matches[idx].of_node, 559 "ti,roof_floor", &prop); 560 if (!ret) 561 pdata->reg_init[idx]->roof_floor = prop; 562 563 ret = of_property_read_u32(palmas_matches[idx].of_node, 564 "ti,mode_sleep", &prop); 565 if (!ret) 566 pdata->reg_init[idx]->mode_sleep = prop; 567 568 ret = of_property_read_u32(palmas_matches[idx].of_node, 569 "ti,warm_reset", &prop); 570 if (!ret) 571 pdata->reg_init[idx]->warm_reset = prop; 572 573 ret = of_property_read_u32(palmas_matches[idx].of_node, 574 "ti,tstep", &prop); 575 if (!ret) 576 pdata->reg_init[idx]->tstep = prop; 577 578 ret = of_property_read_u32(palmas_matches[idx].of_node, 579 "ti,vsel", &prop); 580 if (!ret) 581 pdata->reg_init[idx]->vsel = prop; 582 } 583 584 ret = of_property_read_u32(node, "ti,ldo6_vibrator", &prop); 585 if (!ret) 586 pdata->ldo6_vibrator = prop; 587 } 588 589 590 static int palmas_probe(struct platform_device *pdev) 591 { 592 struct palmas *palmas = dev_get_drvdata(pdev->dev.parent); 593 struct palmas_pmic_platform_data *pdata = pdev->dev.platform_data; 594 struct device_node *node = pdev->dev.of_node; 595 struct regulator_dev *rdev; 596 struct regulator_config config = { }; 597 struct palmas_pmic *pmic; 598 struct palmas_reg_init *reg_init; 599 int id = 0, ret; 600 unsigned int addr, reg; 601 602 if (node && !pdata) { 603 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); 604 605 if (!pdata) 606 return -ENOMEM; 607 608 palmas_dt_to_pdata(&pdev->dev, node, pdata); 609 } 610 611 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL); 612 if (!pmic) 613 return -ENOMEM; 614 615 pmic->dev = &pdev->dev; 616 pmic->palmas = palmas; 617 palmas->pmic = pmic; 618 platform_set_drvdata(pdev, pmic); 619 620 ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, ®); 621 if (ret) 622 return ret; 623 624 if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN) 625 pmic->smps123 = 1; 626 627 if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN) 628 pmic->smps457 = 1; 629 630 config.regmap = palmas->regmap[REGULATOR_SLAVE]; 631 config.dev = &pdev->dev; 632 config.driver_data = pmic; 633 634 for (id = 0; id < PALMAS_REG_LDO1; id++) { 635 636 /* 637 * Miss out regulators which are not available due 638 * to slaving configurations. 639 */ 640 switch (id) { 641 case PALMAS_REG_SMPS12: 642 case PALMAS_REG_SMPS3: 643 if (pmic->smps123) 644 continue; 645 break; 646 case PALMAS_REG_SMPS123: 647 if (!pmic->smps123) 648 continue; 649 break; 650 case PALMAS_REG_SMPS45: 651 case PALMAS_REG_SMPS7: 652 if (pmic->smps457) 653 continue; 654 break; 655 case PALMAS_REG_SMPS457: 656 if (!pmic->smps457) 657 continue; 658 } 659 660 /* Initialise sleep/init values from platform data */ 661 if (pdata && pdata->reg_init[id]) { 662 reg_init = pdata->reg_init[id]; 663 ret = palmas_smps_init(palmas, id, reg_init); 664 if (ret) 665 goto err_unregister_regulator; 666 } 667 668 /* Register the regulators */ 669 pmic->desc[id].name = palmas_regs_info[id].name; 670 pmic->desc[id].id = id; 671 672 switch (id) { 673 case PALMAS_REG_SMPS10: 674 pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES; 675 pmic->desc[id].ops = &palmas_ops_smps10; 676 pmic->desc[id].vsel_reg = 677 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, 678 PALMAS_SMPS10_CTRL); 679 pmic->desc[id].vsel_mask = SMPS10_VSEL; 680 pmic->desc[id].enable_reg = 681 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, 682 PALMAS_SMPS10_STATUS); 683 pmic->desc[id].enable_mask = SMPS10_BOOST_EN; 684 pmic->desc[id].min_uV = 3750000; 685 pmic->desc[id].uV_step = 1250000; 686 break; 687 default: 688 /* 689 * Read and store the RANGE bit for later use 690 * This must be done before regulator is probed, 691 * otherwise we error in probe with unsupportable ranges. 692 */ 693 addr = palmas_regs_info[id].vsel_addr; 694 695 ret = palmas_smps_read(pmic->palmas, addr, ®); 696 if (ret) 697 goto err_unregister_regulator; 698 if (reg & PALMAS_SMPS12_VOLTAGE_RANGE) 699 pmic->range[id] = 1; 700 701 pmic->desc[id].ops = &palmas_ops_smps; 702 pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES; 703 pmic->desc[id].vsel_reg = 704 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, 705 palmas_regs_info[id].vsel_addr); 706 pmic->desc[id].vsel_mask = 707 PALMAS_SMPS12_VOLTAGE_VSEL_MASK; 708 } 709 710 pmic->desc[id].type = REGULATOR_VOLTAGE; 711 pmic->desc[id].owner = THIS_MODULE; 712 713 if (pdata) 714 config.init_data = pdata->reg_data[id]; 715 else 716 config.init_data = NULL; 717 718 config.of_node = palmas_matches[id].of_node; 719 720 rdev = regulator_register(&pmic->desc[id], &config); 721 if (IS_ERR(rdev)) { 722 dev_err(&pdev->dev, 723 "failed to register %s regulator\n", 724 pdev->name); 725 ret = PTR_ERR(rdev); 726 goto err_unregister_regulator; 727 } 728 729 /* Save regulator for cleanup */ 730 pmic->rdev[id] = rdev; 731 } 732 733 /* Start this loop from the id left from previous loop */ 734 for (; id < PALMAS_NUM_REGS; id++) { 735 736 /* Miss out regulators which are not available due 737 * to alternate functions. 738 */ 739 740 /* Register the regulators */ 741 pmic->desc[id].name = palmas_regs_info[id].name; 742 pmic->desc[id].id = id; 743 pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES; 744 745 pmic->desc[id].ops = &palmas_ops_ldo; 746 747 pmic->desc[id].type = REGULATOR_VOLTAGE; 748 pmic->desc[id].owner = THIS_MODULE; 749 pmic->desc[id].min_uV = 900000; 750 pmic->desc[id].uV_step = 50000; 751 pmic->desc[id].linear_min_sel = 1; 752 pmic->desc[id].vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, 753 palmas_regs_info[id].vsel_addr); 754 pmic->desc[id].vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK; 755 pmic->desc[id].enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, 756 palmas_regs_info[id].ctrl_addr); 757 pmic->desc[id].enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE; 758 759 if (pdata) 760 config.init_data = pdata->reg_data[id]; 761 else 762 config.init_data = NULL; 763 764 config.of_node = palmas_matches[id].of_node; 765 766 rdev = regulator_register(&pmic->desc[id], &config); 767 if (IS_ERR(rdev)) { 768 dev_err(&pdev->dev, 769 "failed to register %s regulator\n", 770 pdev->name); 771 ret = PTR_ERR(rdev); 772 goto err_unregister_regulator; 773 } 774 775 /* Save regulator for cleanup */ 776 pmic->rdev[id] = rdev; 777 778 /* Initialise sleep/init values from platform data */ 779 if (pdata) { 780 reg_init = pdata->reg_init[id]; 781 if (reg_init) { 782 ret = palmas_ldo_init(palmas, id, reg_init); 783 if (ret) { 784 regulator_unregister(pmic->rdev[id]); 785 goto err_unregister_regulator; 786 } 787 } 788 } 789 } 790 791 return 0; 792 793 err_unregister_regulator: 794 while (--id >= 0) 795 regulator_unregister(pmic->rdev[id]); 796 return ret; 797 } 798 799 static int palmas_remove(struct platform_device *pdev) 800 { 801 struct palmas_pmic *pmic = platform_get_drvdata(pdev); 802 int id; 803 804 for (id = 0; id < PALMAS_NUM_REGS; id++) 805 regulator_unregister(pmic->rdev[id]); 806 return 0; 807 } 808 809 static struct of_device_id of_palmas_match_tbl[] = { 810 { .compatible = "ti,palmas-pmic", }, 811 { /* end */ } 812 }; 813 814 static struct platform_driver palmas_driver = { 815 .driver = { 816 .name = "palmas-pmic", 817 .of_match_table = of_palmas_match_tbl, 818 .owner = THIS_MODULE, 819 }, 820 .probe = palmas_probe, 821 .remove = palmas_remove, 822 }; 823 824 static int __init palmas_init(void) 825 { 826 return platform_driver_register(&palmas_driver); 827 } 828 subsys_initcall(palmas_init); 829 830 static void __exit palmas_exit(void) 831 { 832 platform_driver_unregister(&palmas_driver); 833 } 834 module_exit(palmas_exit); 835 836 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>"); 837 MODULE_DESCRIPTION("Palmas voltage regulator driver"); 838 MODULE_LICENSE("GPL"); 839 MODULE_ALIAS("platform:palmas-pmic"); 840 MODULE_DEVICE_TABLE(of, of_palmas_match_tbl); 841