1// SPDX-License-Identifier: GPL-2.0+ 2// 3// Regulator driver for DA9063 PMIC series 4// 5// Copyright 2012 Dialog Semiconductors Ltd. 6// Copyright 2013 Philipp Zabel, Pengutronix 7// 8// Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com> 9 10#include <linux/kernel.h> 11#include <linux/module.h> 12#include <linux/init.h> 13#include <linux/err.h> 14#include <linux/slab.h> 15#include <linux/of.h> 16#include <linux/platform_device.h> 17#include <linux/regmap.h> 18#include <linux/regulator/driver.h> 19#include <linux/regulator/machine.h> 20#include <linux/regulator/of_regulator.h> 21#include <linux/mfd/da9063/core.h> 22#include <linux/mfd/da9063/registers.h> 23 24 25/* Definition for registering regmap bit fields using a mask */ 26#define BFIELD(_reg, _mask) \ 27 REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \ 28 sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1) 29 30/* DA9063 and DA9063L regulator IDs */ 31enum { 32 /* BUCKs */ 33 DA9063_ID_BCORE1, 34 DA9063_ID_BCORE2, 35 DA9063_ID_BPRO, 36 DA9063_ID_BMEM, 37 DA9063_ID_BIO, 38 DA9063_ID_BPERI, 39 40 /* BCORE1 and BCORE2 in merged mode */ 41 DA9063_ID_BCORES_MERGED, 42 /* BMEM and BIO in merged mode */ 43 DA9063_ID_BMEM_BIO_MERGED, 44 /* When two BUCKs are merged, they cannot be reused separately */ 45 46 /* LDOs on both DA9063 and DA9063L */ 47 DA9063_ID_LDO3, 48 DA9063_ID_LDO7, 49 DA9063_ID_LDO8, 50 DA9063_ID_LDO9, 51 DA9063_ID_LDO11, 52 53 /* DA9063-only LDOs */ 54 DA9063_ID_LDO1, 55 DA9063_ID_LDO2, 56 DA9063_ID_LDO4, 57 DA9063_ID_LDO5, 58 DA9063_ID_LDO6, 59 DA9063_ID_LDO10, 60}; 61 62/* Old regulator platform data */ 63struct da9063_regulator_data { 64 int id; 65 struct regulator_init_data *initdata; 66}; 67 68struct da9063_regulators_pdata { 69 unsigned int n_regulators; 70 struct da9063_regulator_data *regulator_data; 71}; 72 73/* Regulator capabilities and registers description */ 74struct da9063_regulator_info { 75 struct regulator_desc desc; 76 77 /* DA9063 main register fields */ 78 struct reg_field mode; /* buck mode of operation */ 79 struct reg_field suspend; 80 struct reg_field sleep; 81 struct reg_field suspend_sleep; 82 unsigned int suspend_vsel_reg; 83 84 /* DA9063 event detection bit */ 85 struct reg_field oc_event; 86 87 /* DA9063 voltage monitor bit */ 88 struct reg_field vmon; 89}; 90 91/* Macros for LDO */ 92#define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \ 93 .desc.id = chip##_ID_##regl_name, \ 94 .desc.name = __stringify(chip##_##regl_name), \ 95 .desc.ops = &da9063_ldo_ops, \ 96 .desc.min_uV = (min_mV) * 1000, \ 97 .desc.uV_step = (step_mV) * 1000, \ 98 .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \ 99 + (DA9063_V##regl_name##_BIAS)), \ 100 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ 101 .desc.enable_mask = DA9063_LDO_EN, \ 102 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ 103 .desc.vsel_mask = DA9063_V##regl_name##_MASK, \ 104 .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \ 105 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \ 106 .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_LDO_CONF), \ 107 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \ 108 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B 109 110/* Macros for voltage DC/DC converters (BUCKs) */ 111#define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \ 112 creg, cmask) \ 113 .desc.id = chip##_ID_##regl_name, \ 114 .desc.name = __stringify(chip##_##regl_name), \ 115 .desc.ops = &da9063_buck_ops, \ 116 .desc.min_uV = (min_mV) * 1000, \ 117 .desc.uV_step = (step_mV) * 1000, \ 118 .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \ 119 .desc.csel_reg = (creg), \ 120 .desc.csel_mask = (cmask), \ 121 .desc.curr_table = limits_array, \ 122 .desc.n_current_limits = ARRAY_SIZE(limits_array) 123 124#define DA9063_BUCK_COMMON_FIELDS(regl_name) \ 125 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ 126 .desc.enable_mask = DA9063_BUCK_EN, \ 127 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ 128 .desc.vsel_mask = DA9063_VBUCK_MASK, \ 129 .desc.linear_min_sel = DA9063_VBUCK_BIAS, \ 130 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \ 131 .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_BUCK_CONF), \ 132 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \ 133 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \ 134 .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK) 135 136/* Defines asignment of regulators info table to chip model */ 137struct da9063_dev_model { 138 const struct da9063_regulator_info *regulator_info; 139 unsigned int n_regulators; 140 enum da9063_type type; 141}; 142 143/* Single regulator settings */ 144struct da9063_regulator { 145 struct regulator_desc desc; 146 struct regulator_dev *rdev; 147 struct da9063 *hw; 148 const struct da9063_regulator_info *info; 149 150 struct regmap_field *mode; 151 struct regmap_field *suspend; 152 struct regmap_field *sleep; 153 struct regmap_field *suspend_sleep; 154 struct regmap_field *vmon; 155}; 156 157/* Encapsulates all information for the regulators driver */ 158struct da9063_regulators { 159 unsigned int n_regulators; 160 /* Array size to be defined during init. Keep at end. */ 161 struct da9063_regulator regulator[] __counted_by(n_regulators); 162}; 163 164/* BUCK modes for DA9063 */ 165enum { 166 BUCK_MODE_MANUAL, /* 0 */ 167 BUCK_MODE_SLEEP, /* 1 */ 168 BUCK_MODE_SYNC, /* 2 */ 169 BUCK_MODE_AUTO /* 3 */ 170}; 171 172/* Regulator operations */ 173 174/* 175 * Current limits array (in uA) for BCORE1, BCORE2, BPRO. 176 * Entry indexes corresponds to register values. 177 */ 178static const unsigned int da9063_buck_a_limits[] = { 179 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, 180 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 181}; 182 183/* 184 * Current limits array (in uA) for BMEM, BIO, BPERI. 185 * Entry indexes corresponds to register values. 186 */ 187static const unsigned int da9063_buck_b_limits[] = { 188 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, 189 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 190}; 191 192/* 193 * Current limits array (in uA) for merged BCORE1 and BCORE2. 194 * Entry indexes corresponds to register values. 195 */ 196static const unsigned int da9063_bcores_merged_limits[] = { 197 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000, 198 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000 199}; 200 201/* 202 * Current limits array (in uA) for merged BMEM and BIO. 203 * Entry indexes corresponds to register values. 204 */ 205static const unsigned int da9063_bmem_bio_merged_limits[] = { 206 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, 207 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000 208}; 209 210static int da9063_set_xvp(struct regulator_dev *rdev, int lim_uV, int severity, bool enable) 211{ 212 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 213 struct device *dev = regl->hw->dev; 214 215 dev_dbg(dev, "%s: lim: %d, sev: %d, en: %d\n", regl->desc.name, lim_uV, severity, enable); 216 217 /* 218 * only support enable and disable. 219 * the da9063 offers a GPIO (GP_FB2) which is unasserted if an XV happens. 220 * therefore ignore severity here, as there might be handlers in hardware. 221 */ 222 if (lim_uV) 223 return -EINVAL; 224 225 return regmap_field_write(regl->vmon, enable ? 1 : 0); 226} 227 228static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) 229{ 230 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 231 unsigned int val; 232 233 switch (mode) { 234 case REGULATOR_MODE_FAST: 235 val = BUCK_MODE_SYNC; 236 break; 237 case REGULATOR_MODE_NORMAL: 238 val = BUCK_MODE_AUTO; 239 break; 240 case REGULATOR_MODE_STANDBY: 241 val = BUCK_MODE_SLEEP; 242 break; 243 default: 244 return -EINVAL; 245 } 246 247 return regmap_field_write(regl->mode, val); 248} 249 250/* 251 * Bucks use single mode register field for normal operation 252 * and suspend state. 253 * There are 3 modes to map to: FAST, NORMAL, and STANDBY. 254 */ 255 256static unsigned int da9063_buck_get_mode(struct regulator_dev *rdev) 257{ 258 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 259 unsigned int val; 260 int ret; 261 262 ret = regmap_field_read(regl->mode, &val); 263 if (ret < 0) 264 return ret; 265 266 switch (val) { 267 default: 268 case BUCK_MODE_MANUAL: 269 /* Sleep flag bit decides the mode */ 270 break; 271 case BUCK_MODE_SLEEP: 272 return REGULATOR_MODE_STANDBY; 273 case BUCK_MODE_SYNC: 274 return REGULATOR_MODE_FAST; 275 case BUCK_MODE_AUTO: 276 return REGULATOR_MODE_NORMAL; 277 } 278 279 ret = regmap_field_read(regl->sleep, &val); 280 if (ret < 0) 281 return 0; 282 283 if (val) 284 return REGULATOR_MODE_STANDBY; 285 else 286 return REGULATOR_MODE_FAST; 287} 288 289/* 290 * LDOs use sleep flags - one for normal and one for suspend state. 291 * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state. 292 */ 293 294static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode) 295{ 296 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 297 unsigned int val; 298 299 switch (mode) { 300 case REGULATOR_MODE_NORMAL: 301 val = 0; 302 break; 303 case REGULATOR_MODE_STANDBY: 304 val = 1; 305 break; 306 default: 307 return -EINVAL; 308 } 309 310 return regmap_field_write(regl->sleep, val); 311} 312 313static unsigned int da9063_ldo_get_mode(struct regulator_dev *rdev) 314{ 315 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 316 int ret, val; 317 318 ret = regmap_field_read(regl->sleep, &val); 319 if (ret < 0) 320 return 0; 321 322 if (val) 323 return REGULATOR_MODE_STANDBY; 324 else 325 return REGULATOR_MODE_NORMAL; 326} 327 328static int da9063_buck_get_status(struct regulator_dev *rdev) 329{ 330 int ret = regulator_is_enabled_regmap(rdev); 331 332 if (ret == 0) { 333 ret = REGULATOR_STATUS_OFF; 334 } else if (ret > 0) { 335 ret = da9063_buck_get_mode(rdev); 336 if (ret > 0) 337 ret = regulator_mode_to_status(ret); 338 else if (ret == 0) 339 ret = -EIO; 340 } 341 342 return ret; 343} 344 345static int da9063_ldo_get_status(struct regulator_dev *rdev) 346{ 347 int ret = regulator_is_enabled_regmap(rdev); 348 349 if (ret == 0) { 350 ret = REGULATOR_STATUS_OFF; 351 } else if (ret > 0) { 352 ret = da9063_ldo_get_mode(rdev); 353 if (ret > 0) 354 ret = regulator_mode_to_status(ret); 355 else if (ret == 0) 356 ret = -EIO; 357 } 358 359 return ret; 360} 361 362static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV) 363{ 364 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 365 const struct da9063_regulator_info *rinfo = regl->info; 366 int ret, sel; 367 368 sel = regulator_map_voltage_linear(rdev, uV, uV); 369 if (sel < 0) 370 return sel; 371 372 sel <<= ffs(rdev->desc->vsel_mask) - 1; 373 374 ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg, 375 rdev->desc->vsel_mask, sel); 376 377 return ret; 378} 379 380static int da9063_suspend_enable(struct regulator_dev *rdev) 381{ 382 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 383 384 return regmap_field_write(regl->suspend, 1); 385} 386 387static int da9063_suspend_disable(struct regulator_dev *rdev) 388{ 389 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 390 391 return regmap_field_write(regl->suspend, 0); 392} 393 394static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, 395 unsigned int mode) 396{ 397 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 398 int val; 399 400 switch (mode) { 401 case REGULATOR_MODE_FAST: 402 val = BUCK_MODE_SYNC; 403 break; 404 case REGULATOR_MODE_NORMAL: 405 val = BUCK_MODE_AUTO; 406 break; 407 case REGULATOR_MODE_STANDBY: 408 val = BUCK_MODE_SLEEP; 409 break; 410 default: 411 return -EINVAL; 412 } 413 414 return regmap_field_write(regl->mode, val); 415} 416 417static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, 418 unsigned int mode) 419{ 420 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 421 unsigned int val; 422 423 switch (mode) { 424 case REGULATOR_MODE_NORMAL: 425 val = 0; 426 break; 427 case REGULATOR_MODE_STANDBY: 428 val = 1; 429 break; 430 default: 431 return -EINVAL; 432 } 433 434 return regmap_field_write(regl->suspend_sleep, val); 435} 436 437static unsigned int da9063_get_overdrive_mask(const struct regulator_desc *desc) 438{ 439 switch (desc->id) { 440 case DA9063_ID_BCORES_MERGED: 441 case DA9063_ID_BCORE1: 442 return DA9063_BCORE1_OD; 443 case DA9063_ID_BCORE2: 444 return DA9063_BCORE2_OD; 445 case DA9063_ID_BPRO: 446 return DA9063_BPRO_OD; 447 default: 448 return 0; 449 } 450} 451 452static int da9063_buck_set_limit_set_overdrive(struct regulator_dev *rdev, 453 int min_uA, int max_uA, 454 unsigned int overdrive_mask) 455{ 456 /* 457 * When enabling overdrive, do it before changing the current limit to 458 * ensure sufficient supply throughout the switch. 459 */ 460 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 461 int ret; 462 unsigned int orig_overdrive; 463 464 ret = regmap_read(regl->hw->regmap, DA9063_REG_CONFIG_H, 465 &orig_overdrive); 466 if (ret < 0) 467 return ret; 468 orig_overdrive &= overdrive_mask; 469 470 if (orig_overdrive == 0) { 471 ret = regmap_set_bits(regl->hw->regmap, DA9063_REG_CONFIG_H, 472 overdrive_mask); 473 if (ret < 0) 474 return ret; 475 } 476 477 ret = regulator_set_current_limit_regmap(rdev, min_uA / 2, max_uA / 2); 478 if (ret < 0 && orig_overdrive == 0) 479 /* 480 * regulator_set_current_limit_regmap may have rejected the 481 * change because of unusable min_uA and/or max_uA inputs. 482 * Attempt to restore original overdrive state, ignore failure- 483 * on-failure. 484 */ 485 regmap_clear_bits(regl->hw->regmap, DA9063_REG_CONFIG_H, 486 overdrive_mask); 487 488 return ret; 489} 490 491static int da9063_buck_set_limit_clear_overdrive(struct regulator_dev *rdev, 492 int min_uA, int max_uA, 493 unsigned int overdrive_mask) 494{ 495 /* 496 * When disabling overdrive, do it after changing the current limit to 497 * ensure sufficient supply throughout the switch. 498 */ 499 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 500 int ret, orig_limit; 501 502 ret = regmap_read(rdev->regmap, rdev->desc->csel_reg, &orig_limit); 503 if (ret < 0) 504 return ret; 505 506 ret = regulator_set_current_limit_regmap(rdev, min_uA, max_uA); 507 if (ret < 0) 508 return ret; 509 510 ret = regmap_clear_bits(regl->hw->regmap, DA9063_REG_CONFIG_H, 511 overdrive_mask); 512 if (ret < 0) 513 /* 514 * Attempt to restore original current limit, ignore failure- 515 * on-failure. 516 */ 517 regmap_write(rdev->regmap, rdev->desc->csel_reg, orig_limit); 518 519 return ret; 520} 521 522static int da9063_buck_set_current_limit(struct regulator_dev *rdev, 523 int min_uA, int max_uA) 524{ 525 unsigned int overdrive_mask, n_currents; 526 527 overdrive_mask = da9063_get_overdrive_mask(rdev->desc); 528 if (overdrive_mask) { 529 n_currents = rdev->desc->n_current_limits; 530 if (n_currents == 0) 531 return -EINVAL; 532 533 if (max_uA > rdev->desc->curr_table[n_currents - 1]) 534 return da9063_buck_set_limit_set_overdrive(rdev, min_uA, 535 max_uA, 536 overdrive_mask); 537 538 return da9063_buck_set_limit_clear_overdrive(rdev, min_uA, 539 max_uA, 540 overdrive_mask); 541 } 542 return regulator_set_current_limit_regmap(rdev, min_uA, max_uA); 543} 544 545static int da9063_buck_get_current_limit(struct regulator_dev *rdev) 546{ 547 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 548 int val, ret, limit; 549 unsigned int mask; 550 551 limit = regulator_get_current_limit_regmap(rdev); 552 if (limit < 0) 553 return limit; 554 mask = da9063_get_overdrive_mask(rdev->desc); 555 if (mask) { 556 ret = regmap_read(regl->hw->regmap, DA9063_REG_CONFIG_H, &val); 557 if (ret < 0) 558 return ret; 559 if (val & mask) 560 limit *= 2; 561 } 562 return limit; 563} 564 565static const struct regulator_ops da9063_buck_ops = { 566 .enable = regulator_enable_regmap, 567 .disable = regulator_disable_regmap, 568 .is_enabled = regulator_is_enabled_regmap, 569 .get_voltage_sel = regulator_get_voltage_sel_regmap, 570 .set_voltage_sel = regulator_set_voltage_sel_regmap, 571 .list_voltage = regulator_list_voltage_linear, 572 .set_current_limit = da9063_buck_set_current_limit, 573 .get_current_limit = da9063_buck_get_current_limit, 574 .set_mode = da9063_buck_set_mode, 575 .get_mode = da9063_buck_get_mode, 576 .get_status = da9063_buck_get_status, 577 .set_suspend_voltage = da9063_set_suspend_voltage, 578 .set_suspend_enable = da9063_suspend_enable, 579 .set_suspend_disable = da9063_suspend_disable, 580 .set_suspend_mode = da9063_buck_set_suspend_mode, 581 .set_over_voltage_protection = da9063_set_xvp, 582 .set_under_voltage_protection = da9063_set_xvp, 583}; 584 585static const struct regulator_ops da9063_ldo_ops = { 586 .enable = regulator_enable_regmap, 587 .disable = regulator_disable_regmap, 588 .is_enabled = regulator_is_enabled_regmap, 589 .get_voltage_sel = regulator_get_voltage_sel_regmap, 590 .set_voltage_sel = regulator_set_voltage_sel_regmap, 591 .list_voltage = regulator_list_voltage_linear, 592 .set_mode = da9063_ldo_set_mode, 593 .get_mode = da9063_ldo_get_mode, 594 .get_status = da9063_ldo_get_status, 595 .set_suspend_voltage = da9063_set_suspend_voltage, 596 .set_suspend_enable = da9063_suspend_enable, 597 .set_suspend_disable = da9063_suspend_disable, 598 .set_suspend_mode = da9063_ldo_set_suspend_mode, 599 .set_over_voltage_protection = da9063_set_xvp, 600 .set_under_voltage_protection = da9063_set_xvp, 601}; 602 603/* Info of regulators for DA9063 */ 604static const struct da9063_regulator_info da9063_regulator_info[] = { 605 { 606 DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570, 607 da9063_buck_a_limits, 608 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), 609 DA9063_BUCK_COMMON_FIELDS(BCORE1), 610 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BCORE1_MON_EN), 611 }, 612 { 613 DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570, 614 da9063_buck_a_limits, 615 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK), 616 DA9063_BUCK_COMMON_FIELDS(BCORE2), 617 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BCORE2_MON_EN), 618 }, 619 { 620 DA9063_BUCK(DA9063, BPRO, 530, 10, 1800, 621 da9063_buck_a_limits, 622 DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK), 623 DA9063_BUCK_COMMON_FIELDS(BPRO), 624 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BPRO_MON_EN), 625 }, 626 { 627 DA9063_BUCK(DA9063, BMEM, 800, 20, 3340, 628 da9063_buck_b_limits, 629 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), 630 DA9063_BUCK_COMMON_FIELDS(BMEM), 631 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BMEM_MON_EN), 632 }, 633 { 634 DA9063_BUCK(DA9063, BIO, 800, 20, 3340, 635 da9063_buck_b_limits, 636 DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK), 637 DA9063_BUCK_COMMON_FIELDS(BIO), 638 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BIO_MON_EN), 639 }, 640 { 641 DA9063_BUCK(DA9063, BPERI, 800, 20, 3340, 642 da9063_buck_b_limits, 643 DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK), 644 DA9063_BUCK_COMMON_FIELDS(BPERI), 645 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BPERI_MON_EN), 646 }, 647 { 648 DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570, 649 da9063_bcores_merged_limits, 650 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), 651 /* BCORES_MERGED uses the same register fields as BCORE1 */ 652 DA9063_BUCK_COMMON_FIELDS(BCORE1), 653 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BCORE1_MON_EN), 654 }, 655 { 656 DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340, 657 da9063_bmem_bio_merged_limits, 658 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), 659 /* BMEM_BIO_MERGED uses the same register fields as BMEM */ 660 DA9063_BUCK_COMMON_FIELDS(BMEM), 661 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BMEM_MON_EN), 662 }, 663 { 664 DA9063_LDO(DA9063, LDO3, 900, 20, 3440), 665 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM), 666 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO3_MON_EN), 667 }, 668 { 669 DA9063_LDO(DA9063, LDO7, 900, 50, 3600), 670 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM), 671 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO7_MON_EN), 672 }, 673 { 674 DA9063_LDO(DA9063, LDO8, 900, 50, 3600), 675 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM), 676 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO8_MON_EN), 677 }, 678 { 679 DA9063_LDO(DA9063, LDO9, 950, 50, 3600), 680 .vmon = BFIELD(DA9063_BB_REG_MON_REG_3, DA9063_LDO9_MON_EN), 681 }, 682 { 683 DA9063_LDO(DA9063, LDO11, 900, 50, 3600), 684 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM), 685 .vmon = BFIELD(DA9063_BB_REG_MON_REG_3, DA9063_LDO11_MON_EN), 686 }, 687 688 /* The following LDOs are present only on DA9063, not on DA9063L */ 689 { 690 DA9063_LDO(DA9063, LDO1, 600, 20, 1860), 691 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO1_MON_EN), 692 }, 693 { 694 DA9063_LDO(DA9063, LDO2, 600, 20, 1860), 695 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO2_MON_EN), 696 }, 697 { 698 DA9063_LDO(DA9063, LDO4, 900, 20, 3440), 699 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM), 700 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO4_MON_EN), 701 }, 702 { 703 DA9063_LDO(DA9063, LDO5, 900, 50, 3600), 704 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO5_MON_EN), 705 }, 706 { 707 DA9063_LDO(DA9063, LDO6, 900, 50, 3600), 708 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO6_MON_EN), 709 }, 710 711 { 712 DA9063_LDO(DA9063, LDO10, 900, 50, 3600), 713 .vmon = BFIELD(DA9063_BB_REG_MON_REG_3, DA9063_LDO10_MON_EN), 714 }, 715}; 716 717/* Link chip model with regulators info table */ 718static struct da9063_dev_model regulators_models[] = { 719 { 720 .regulator_info = da9063_regulator_info, 721 .n_regulators = ARRAY_SIZE(da9063_regulator_info), 722 .type = PMIC_TYPE_DA9063, 723 }, 724 { 725 .regulator_info = da9063_regulator_info, 726 .n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6, 727 .type = PMIC_TYPE_DA9063L, 728 }, 729 { } 730}; 731 732/* Regulator interrupt handlers */ 733static irqreturn_t da9063_ldo_lim_event(int irq, void *data) 734{ 735 struct da9063_regulators *regulators = data; 736 struct da9063 *hw = regulators->regulator[0].hw; 737 struct da9063_regulator *regl; 738 int bits, i, ret; 739 740 ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits); 741 if (ret < 0) 742 return IRQ_NONE; 743 744 for (i = regulators->n_regulators - 1; i >= 0; i--) { 745 regl = ®ulators->regulator[i]; 746 if (regl->info->oc_event.reg != DA9063_REG_STATUS_D) 747 continue; 748 749 if (BIT(regl->info->oc_event.lsb) & bits) { 750 regulator_notifier_call_chain(regl->rdev, 751 REGULATOR_EVENT_OVER_CURRENT, NULL); 752 } 753 } 754 755 return IRQ_HANDLED; 756} 757 758/* 759 * Probing and Initialisation functions 760 */ 761static const struct regulator_init_data *da9063_get_regulator_initdata( 762 const struct da9063_regulators_pdata *regl_pdata, int id) 763{ 764 int i; 765 766 for (i = 0; i < regl_pdata->n_regulators; i++) { 767 if (id == regl_pdata->regulator_data[i].id) 768 return regl_pdata->regulator_data[i].initdata; 769 } 770 771 return NULL; 772} 773 774static int da9063_check_xvp_constraints(struct regulator_config *config) 775{ 776 struct da9063_regulator *regl = config->driver_data; 777 const struct regulation_constraints *constr = &config->init_data->constraints; 778 const struct notification_limit *uv_l = &constr->under_voltage_limits; 779 const struct notification_limit *ov_l = &constr->over_voltage_limits; 780 781 /* make sure that only one severity is used to clarify if unchanged, enabled or disabled */ 782 if ((!!uv_l->prot + !!uv_l->err + !!uv_l->warn) > 1) { 783 dev_err(config->dev, "%s: at most one voltage monitoring severity allowed!\n", 784 regl->desc.name); 785 return -EINVAL; 786 } 787 788 /* make sure that UV and OV monitoring is set to the same severity and value */ 789 if (uv_l->prot != ov_l->prot) { 790 dev_err(config->dev, 791 "%s: protection-microvolt: value must be equal for uv and ov!\n", 792 regl->desc.name); 793 return -EINVAL; 794 } 795 if (uv_l->err != ov_l->err) { 796 dev_err(config->dev, "%s: error-microvolt: value must be equal for uv and ov!\n", 797 regl->desc.name); 798 return -EINVAL; 799 } 800 if (uv_l->warn != ov_l->warn) { 801 dev_err(config->dev, "%s: warn-microvolt: value must be equal for uv and ov!\n", 802 regl->desc.name); 803 return -EINVAL; 804 } 805 806 return 0; 807} 808 809static struct of_regulator_match da9063_matches[] = { 810 [DA9063_ID_BCORE1] = { .name = "bcore1" }, 811 [DA9063_ID_BCORE2] = { .name = "bcore2" }, 812 [DA9063_ID_BPRO] = { .name = "bpro", }, 813 [DA9063_ID_BMEM] = { .name = "bmem", }, 814 [DA9063_ID_BIO] = { .name = "bio", }, 815 [DA9063_ID_BPERI] = { .name = "bperi", }, 816 [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, 817 [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, 818 [DA9063_ID_LDO3] = { .name = "ldo3", }, 819 [DA9063_ID_LDO7] = { .name = "ldo7", }, 820 [DA9063_ID_LDO8] = { .name = "ldo8", }, 821 [DA9063_ID_LDO9] = { .name = "ldo9", }, 822 [DA9063_ID_LDO11] = { .name = "ldo11", }, 823 /* The following LDOs are present only on DA9063, not on DA9063L */ 824 [DA9063_ID_LDO1] = { .name = "ldo1", }, 825 [DA9063_ID_LDO2] = { .name = "ldo2", }, 826 [DA9063_ID_LDO4] = { .name = "ldo4", }, 827 [DA9063_ID_LDO5] = { .name = "ldo5", }, 828 [DA9063_ID_LDO6] = { .name = "ldo6", }, 829 [DA9063_ID_LDO10] = { .name = "ldo10", }, 830}; 831 832static struct da9063_regulators_pdata *da9063_parse_regulators_dt( 833 struct platform_device *pdev, 834 struct of_regulator_match **da9063_reg_matches) 835{ 836 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 837 struct da9063_regulators_pdata *pdata; 838 struct da9063_regulator_data *rdata; 839 struct device_node *node; 840 int da9063_matches_len = ARRAY_SIZE(da9063_matches); 841 int i, n, num; 842 843 if (da9063->type == PMIC_TYPE_DA9063L) 844 da9063_matches_len -= 6; 845 846 node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); 847 if (!node) { 848 dev_err(&pdev->dev, "Regulators device node not found\n"); 849 return ERR_PTR(-ENODEV); 850 } 851 852 num = of_regulator_match(&pdev->dev, node, da9063_matches, 853 da9063_matches_len); 854 of_node_put(node); 855 if (num < 0) { 856 dev_err(&pdev->dev, "Failed to match regulators\n"); 857 return ERR_PTR(-EINVAL); 858 } 859 860 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); 861 if (!pdata) 862 return ERR_PTR(-ENOMEM); 863 864 pdata->regulator_data = devm_kcalloc(&pdev->dev, 865 num, sizeof(*pdata->regulator_data), 866 GFP_KERNEL); 867 if (!pdata->regulator_data) 868 return ERR_PTR(-ENOMEM); 869 pdata->n_regulators = num; 870 871 n = 0; 872 for (i = 0; i < da9063_matches_len; i++) { 873 if (!da9063_matches[i].init_data) 874 continue; 875 876 rdata = &pdata->regulator_data[n]; 877 rdata->id = i; 878 rdata->initdata = da9063_matches[i].init_data; 879 880 n++; 881 } 882 883 *da9063_reg_matches = da9063_matches; 884 return pdata; 885} 886 887static int da9063_regulator_probe(struct platform_device *pdev) 888{ 889 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 890 struct of_regulator_match *da9063_reg_matches = NULL; 891 struct da9063_regulators_pdata *regl_pdata; 892 const struct da9063_dev_model *model; 893 struct da9063_regulators *regulators; 894 struct da9063_regulator *regl; 895 struct regulator_config config; 896 bool bcores_merged, bmem_bio_merged; 897 int id, irq, n, n_regulators, ret, val; 898 899 regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches); 900 901 if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) { 902 dev_err(&pdev->dev, 903 "No regulators defined for the platform\n"); 904 return -ENODEV; 905 } 906 907 /* Find regulators set for particular device model */ 908 for (model = regulators_models; model->regulator_info; model++) { 909 if (model->type == da9063->type) 910 break; 911 } 912 if (!model->regulator_info) { 913 dev_err(&pdev->dev, "Chip model not recognised (%u)\n", 914 da9063->type); 915 return -ENODEV; 916 } 917 918 ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val); 919 if (ret < 0) { 920 dev_err(&pdev->dev, 921 "Error while reading BUCKs configuration\n"); 922 return ret; 923 } 924 bcores_merged = val & DA9063_BCORE_MERGE; 925 bmem_bio_merged = val & DA9063_BUCK_MERGE; 926 927 n_regulators = model->n_regulators; 928 if (bcores_merged) 929 n_regulators -= 2; /* remove BCORE1, BCORE2 */ 930 else 931 n_regulators--; /* remove BCORES_MERGED */ 932 if (bmem_bio_merged) 933 n_regulators -= 2; /* remove BMEM, BIO */ 934 else 935 n_regulators--; /* remove BMEM_BIO_MERGED */ 936 937 /* Allocate memory required by usable regulators */ 938 regulators = devm_kzalloc(&pdev->dev, struct_size(regulators, 939 regulator, n_regulators), GFP_KERNEL); 940 if (!regulators) 941 return -ENOMEM; 942 943 regulators->n_regulators = n_regulators; 944 platform_set_drvdata(pdev, regulators); 945 946 /* Register all regulators declared in platform information */ 947 n = 0; 948 id = 0; 949 while (n < regulators->n_regulators) { 950 /* Skip regulator IDs depending on merge mode configuration */ 951 switch (id) { 952 case DA9063_ID_BCORE1: 953 case DA9063_ID_BCORE2: 954 if (bcores_merged) { 955 id++; 956 continue; 957 } 958 break; 959 case DA9063_ID_BMEM: 960 case DA9063_ID_BIO: 961 if (bmem_bio_merged) { 962 id++; 963 continue; 964 } 965 break; 966 case DA9063_ID_BCORES_MERGED: 967 if (!bcores_merged) { 968 id++; 969 continue; 970 } 971 break; 972 case DA9063_ID_BMEM_BIO_MERGED: 973 if (!bmem_bio_merged) { 974 id++; 975 continue; 976 } 977 break; 978 } 979 980 /* Initialise regulator structure */ 981 regl = ®ulators->regulator[n]; 982 regl->hw = da9063; 983 regl->info = &model->regulator_info[id]; 984 regl->desc = regl->info->desc; 985 regl->desc.type = REGULATOR_VOLTAGE; 986 regl->desc.owner = THIS_MODULE; 987 988 if (regl->info->mode.reg) { 989 regl->mode = devm_regmap_field_alloc(&pdev->dev, 990 da9063->regmap, regl->info->mode); 991 if (IS_ERR(regl->mode)) 992 return PTR_ERR(regl->mode); 993 } 994 995 if (regl->info->suspend.reg) { 996 regl->suspend = devm_regmap_field_alloc(&pdev->dev, 997 da9063->regmap, regl->info->suspend); 998 if (IS_ERR(regl->suspend)) 999 return PTR_ERR(regl->suspend); 1000 } 1001 1002 if (regl->info->sleep.reg) { 1003 regl->sleep = devm_regmap_field_alloc(&pdev->dev, 1004 da9063->regmap, regl->info->sleep); 1005 if (IS_ERR(regl->sleep)) 1006 return PTR_ERR(regl->sleep); 1007 } 1008 1009 if (regl->info->suspend_sleep.reg) { 1010 regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev, 1011 da9063->regmap, regl->info->suspend_sleep); 1012 if (IS_ERR(regl->suspend_sleep)) 1013 return PTR_ERR(regl->suspend_sleep); 1014 } 1015 if (regl->info->vmon.reg) { 1016 regl->vmon = devm_regmap_field_alloc(&pdev->dev, 1017 da9063->regmap, regl->info->vmon); 1018 if (IS_ERR(regl->vmon)) 1019 return PTR_ERR(regl->vmon); 1020 } 1021 1022 /* Register regulator */ 1023 memset(&config, 0, sizeof(config)); 1024 config.dev = &pdev->dev; 1025 config.init_data = da9063_get_regulator_initdata(regl_pdata, id); 1026 config.driver_data = regl; 1027 if (da9063_reg_matches) 1028 config.of_node = da9063_reg_matches[id].of_node; 1029 config.regmap = da9063->regmap; 1030 1031 /* Checking constraints requires init_data from DT. */ 1032 if (config.init_data) { 1033 ret = da9063_check_xvp_constraints(&config); 1034 if (ret) 1035 return ret; 1036 } 1037 1038 regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, 1039 &config); 1040 if (IS_ERR(regl->rdev)) { 1041 dev_err(&pdev->dev, 1042 "Failed to register %s regulator\n", 1043 regl->desc.name); 1044 return PTR_ERR(regl->rdev); 1045 } 1046 id++; 1047 n++; 1048 } 1049 1050 /* LDOs overcurrent event support */ 1051 irq = platform_get_irq_byname(pdev, "LDO_LIM"); 1052 if (irq < 0) 1053 return irq; 1054 1055 ret = devm_request_threaded_irq(&pdev->dev, irq, 1056 NULL, da9063_ldo_lim_event, 1057 IRQF_TRIGGER_LOW | IRQF_ONESHOT, 1058 "LDO_LIM", regulators); 1059 if (ret) 1060 dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n"); 1061 1062 return ret; 1063} 1064 1065static struct platform_driver da9063_regulator_driver = { 1066 .driver = { 1067 .name = DA9063_DRVNAME_REGULATORS, 1068 .probe_type = PROBE_PREFER_ASYNCHRONOUS, 1069 }, 1070 .probe = da9063_regulator_probe, 1071}; 1072 1073static int __init da9063_regulator_init(void) 1074{ 1075 return platform_driver_register(&da9063_regulator_driver); 1076} 1077subsys_initcall(da9063_regulator_init); 1078 1079static void __exit da9063_regulator_cleanup(void) 1080{ 1081 platform_driver_unregister(&da9063_regulator_driver); 1082} 1083module_exit(da9063_regulator_cleanup); 1084 1085 1086/* Module information */ 1087MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>"); 1088MODULE_DESCRIPTION("DA9063 regulators driver"); 1089MODULE_LICENSE("GPL"); 1090MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS); 1091