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 88/* Macros for LDO */ 89#define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \ 90 .desc.id = chip##_ID_##regl_name, \ 91 .desc.name = __stringify(chip##_##regl_name), \ 92 .desc.ops = &da9063_ldo_ops, \ 93 .desc.min_uV = (min_mV) * 1000, \ 94 .desc.uV_step = (step_mV) * 1000, \ 95 .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \ 96 + (DA9063_V##regl_name##_BIAS)), \ 97 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ 98 .desc.enable_mask = DA9063_LDO_EN, \ 99 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ 100 .desc.vsel_mask = DA9063_V##regl_name##_MASK, \ 101 .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \ 102 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \ 103 .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_LDO_CONF), \ 104 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \ 105 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B 106 107/* Macros for voltage DC/DC converters (BUCKs) */ 108#define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \ 109 creg, cmask) \ 110 .desc.id = chip##_ID_##regl_name, \ 111 .desc.name = __stringify(chip##_##regl_name), \ 112 .desc.ops = &da9063_buck_ops, \ 113 .desc.min_uV = (min_mV) * 1000, \ 114 .desc.uV_step = (step_mV) * 1000, \ 115 .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \ 116 .desc.csel_reg = (creg), \ 117 .desc.csel_mask = (cmask), \ 118 .desc.curr_table = limits_array, \ 119 .desc.n_current_limits = ARRAY_SIZE(limits_array) 120 121#define DA9063_BUCK_COMMON_FIELDS(regl_name) \ 122 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ 123 .desc.enable_mask = DA9063_BUCK_EN, \ 124 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ 125 .desc.vsel_mask = DA9063_VBUCK_MASK, \ 126 .desc.linear_min_sel = DA9063_VBUCK_BIAS, \ 127 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \ 128 .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_BUCK_CONF), \ 129 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \ 130 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \ 131 .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK) 132 133/* Defines asignment of regulators info table to chip model */ 134struct da9063_dev_model { 135 const struct da9063_regulator_info *regulator_info; 136 unsigned int n_regulators; 137 enum da9063_type type; 138}; 139 140/* Single regulator settings */ 141struct da9063_regulator { 142 struct regulator_desc desc; 143 struct regulator_dev *rdev; 144 struct da9063 *hw; 145 const struct da9063_regulator_info *info; 146 147 struct regmap_field *mode; 148 struct regmap_field *suspend; 149 struct regmap_field *sleep; 150 struct regmap_field *suspend_sleep; 151}; 152 153/* Encapsulates all information for the regulators driver */ 154struct da9063_regulators { 155 unsigned int n_regulators; 156 /* Array size to be defined during init. Keep at end. */ 157 struct da9063_regulator regulator[]; 158}; 159 160/* BUCK modes for DA9063 */ 161enum { 162 BUCK_MODE_MANUAL, /* 0 */ 163 BUCK_MODE_SLEEP, /* 1 */ 164 BUCK_MODE_SYNC, /* 2 */ 165 BUCK_MODE_AUTO /* 3 */ 166}; 167 168/* Regulator operations */ 169 170/* 171 * Current limits array (in uA) for BCORE1, BCORE2, BPRO. 172 * Entry indexes corresponds to register values. 173 */ 174static const unsigned int da9063_buck_a_limits[] = { 175 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, 176 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 177}; 178 179/* 180 * Current limits array (in uA) for BMEM, BIO, BPERI. 181 * Entry indexes corresponds to register values. 182 */ 183static const unsigned int da9063_buck_b_limits[] = { 184 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, 185 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 186}; 187 188/* 189 * Current limits array (in uA) for merged BCORE1 and BCORE2. 190 * Entry indexes corresponds to register values. 191 */ 192static const unsigned int da9063_bcores_merged_limits[] = { 193 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000, 194 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000 195}; 196 197/* 198 * Current limits array (in uA) for merged BMEM and BIO. 199 * Entry indexes corresponds to register values. 200 */ 201static const unsigned int da9063_bmem_bio_merged_limits[] = { 202 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, 203 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000 204}; 205 206static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) 207{ 208 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 209 unsigned int val; 210 211 switch (mode) { 212 case REGULATOR_MODE_FAST: 213 val = BUCK_MODE_SYNC; 214 break; 215 case REGULATOR_MODE_NORMAL: 216 val = BUCK_MODE_AUTO; 217 break; 218 case REGULATOR_MODE_STANDBY: 219 val = BUCK_MODE_SLEEP; 220 break; 221 default: 222 return -EINVAL; 223 } 224 225 return regmap_field_write(regl->mode, val); 226} 227 228/* 229 * Bucks use single mode register field for normal operation 230 * and suspend state. 231 * There are 3 modes to map to: FAST, NORMAL, and STANDBY. 232 */ 233 234static unsigned int da9063_buck_get_mode(struct regulator_dev *rdev) 235{ 236 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 237 unsigned int val; 238 int ret; 239 240 ret = regmap_field_read(regl->mode, &val); 241 if (ret < 0) 242 return ret; 243 244 switch (val) { 245 default: 246 case BUCK_MODE_MANUAL: 247 /* Sleep flag bit decides the mode */ 248 break; 249 case BUCK_MODE_SLEEP: 250 return REGULATOR_MODE_STANDBY; 251 case BUCK_MODE_SYNC: 252 return REGULATOR_MODE_FAST; 253 case BUCK_MODE_AUTO: 254 return REGULATOR_MODE_NORMAL; 255 } 256 257 ret = regmap_field_read(regl->sleep, &val); 258 if (ret < 0) 259 return 0; 260 261 if (val) 262 return REGULATOR_MODE_STANDBY; 263 else 264 return REGULATOR_MODE_FAST; 265} 266 267/* 268 * LDOs use sleep flags - one for normal and one for suspend state. 269 * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state. 270 */ 271 272static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode) 273{ 274 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 275 unsigned int val; 276 277 switch (mode) { 278 case REGULATOR_MODE_NORMAL: 279 val = 0; 280 break; 281 case REGULATOR_MODE_STANDBY: 282 val = 1; 283 break; 284 default: 285 return -EINVAL; 286 } 287 288 return regmap_field_write(regl->sleep, val); 289} 290 291static unsigned int da9063_ldo_get_mode(struct regulator_dev *rdev) 292{ 293 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 294 int ret, val; 295 296 ret = regmap_field_read(regl->sleep, &val); 297 if (ret < 0) 298 return 0; 299 300 if (val) 301 return REGULATOR_MODE_STANDBY; 302 else 303 return REGULATOR_MODE_NORMAL; 304} 305 306static int da9063_buck_get_status(struct regulator_dev *rdev) 307{ 308 int ret = regulator_is_enabled_regmap(rdev); 309 310 if (ret == 0) { 311 ret = REGULATOR_STATUS_OFF; 312 } else if (ret > 0) { 313 ret = da9063_buck_get_mode(rdev); 314 if (ret > 0) 315 ret = regulator_mode_to_status(ret); 316 else if (ret == 0) 317 ret = -EIO; 318 } 319 320 return ret; 321} 322 323static int da9063_ldo_get_status(struct regulator_dev *rdev) 324{ 325 int ret = regulator_is_enabled_regmap(rdev); 326 327 if (ret == 0) { 328 ret = REGULATOR_STATUS_OFF; 329 } else if (ret > 0) { 330 ret = da9063_ldo_get_mode(rdev); 331 if (ret > 0) 332 ret = regulator_mode_to_status(ret); 333 else if (ret == 0) 334 ret = -EIO; 335 } 336 337 return ret; 338} 339 340static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV) 341{ 342 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 343 const struct da9063_regulator_info *rinfo = regl->info; 344 int ret, sel; 345 346 sel = regulator_map_voltage_linear(rdev, uV, uV); 347 if (sel < 0) 348 return sel; 349 350 sel <<= ffs(rdev->desc->vsel_mask) - 1; 351 352 ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg, 353 rdev->desc->vsel_mask, sel); 354 355 return ret; 356} 357 358static int da9063_suspend_enable(struct regulator_dev *rdev) 359{ 360 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 361 362 return regmap_field_write(regl->suspend, 1); 363} 364 365static int da9063_suspend_disable(struct regulator_dev *rdev) 366{ 367 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 368 369 return regmap_field_write(regl->suspend, 0); 370} 371 372static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, 373 unsigned int mode) 374{ 375 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 376 int val; 377 378 switch (mode) { 379 case REGULATOR_MODE_FAST: 380 val = BUCK_MODE_SYNC; 381 break; 382 case REGULATOR_MODE_NORMAL: 383 val = BUCK_MODE_AUTO; 384 break; 385 case REGULATOR_MODE_STANDBY: 386 val = BUCK_MODE_SLEEP; 387 break; 388 default: 389 return -EINVAL; 390 } 391 392 return regmap_field_write(regl->mode, val); 393} 394 395static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, 396 unsigned int mode) 397{ 398 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 399 unsigned int val; 400 401 switch (mode) { 402 case REGULATOR_MODE_NORMAL: 403 val = 0; 404 break; 405 case REGULATOR_MODE_STANDBY: 406 val = 1; 407 break; 408 default: 409 return -EINVAL; 410 } 411 412 return regmap_field_write(regl->suspend_sleep, val); 413} 414 415static const struct regulator_ops da9063_buck_ops = { 416 .enable = regulator_enable_regmap, 417 .disable = regulator_disable_regmap, 418 .is_enabled = regulator_is_enabled_regmap, 419 .get_voltage_sel = regulator_get_voltage_sel_regmap, 420 .set_voltage_sel = regulator_set_voltage_sel_regmap, 421 .list_voltage = regulator_list_voltage_linear, 422 .set_current_limit = regulator_set_current_limit_regmap, 423 .get_current_limit = regulator_get_current_limit_regmap, 424 .set_mode = da9063_buck_set_mode, 425 .get_mode = da9063_buck_get_mode, 426 .get_status = da9063_buck_get_status, 427 .set_suspend_voltage = da9063_set_suspend_voltage, 428 .set_suspend_enable = da9063_suspend_enable, 429 .set_suspend_disable = da9063_suspend_disable, 430 .set_suspend_mode = da9063_buck_set_suspend_mode, 431}; 432 433static const struct regulator_ops da9063_ldo_ops = { 434 .enable = regulator_enable_regmap, 435 .disable = regulator_disable_regmap, 436 .is_enabled = regulator_is_enabled_regmap, 437 .get_voltage_sel = regulator_get_voltage_sel_regmap, 438 .set_voltage_sel = regulator_set_voltage_sel_regmap, 439 .list_voltage = regulator_list_voltage_linear, 440 .set_mode = da9063_ldo_set_mode, 441 .get_mode = da9063_ldo_get_mode, 442 .get_status = da9063_ldo_get_status, 443 .set_suspend_voltage = da9063_set_suspend_voltage, 444 .set_suspend_enable = da9063_suspend_enable, 445 .set_suspend_disable = da9063_suspend_disable, 446 .set_suspend_mode = da9063_ldo_set_suspend_mode, 447}; 448 449/* Info of regulators for DA9063 */ 450static const struct da9063_regulator_info da9063_regulator_info[] = { 451 { 452 DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570, 453 da9063_buck_a_limits, 454 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), 455 DA9063_BUCK_COMMON_FIELDS(BCORE1), 456 }, 457 { 458 DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570, 459 da9063_buck_a_limits, 460 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK), 461 DA9063_BUCK_COMMON_FIELDS(BCORE2), 462 }, 463 { 464 DA9063_BUCK(DA9063, BPRO, 530, 10, 1800, 465 da9063_buck_a_limits, 466 DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK), 467 DA9063_BUCK_COMMON_FIELDS(BPRO), 468 }, 469 { 470 DA9063_BUCK(DA9063, BMEM, 800, 20, 3340, 471 da9063_buck_b_limits, 472 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), 473 DA9063_BUCK_COMMON_FIELDS(BMEM), 474 }, 475 { 476 DA9063_BUCK(DA9063, BIO, 800, 20, 3340, 477 da9063_buck_b_limits, 478 DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK), 479 DA9063_BUCK_COMMON_FIELDS(BIO), 480 }, 481 { 482 DA9063_BUCK(DA9063, BPERI, 800, 20, 3340, 483 da9063_buck_b_limits, 484 DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK), 485 DA9063_BUCK_COMMON_FIELDS(BPERI), 486 }, 487 { 488 DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570, 489 da9063_bcores_merged_limits, 490 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), 491 /* BCORES_MERGED uses the same register fields as BCORE1 */ 492 DA9063_BUCK_COMMON_FIELDS(BCORE1), 493 }, 494 { 495 DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340, 496 da9063_bmem_bio_merged_limits, 497 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), 498 /* BMEM_BIO_MERGED uses the same register fields as BMEM */ 499 DA9063_BUCK_COMMON_FIELDS(BMEM), 500 }, 501 { 502 DA9063_LDO(DA9063, LDO3, 900, 20, 3440), 503 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM), 504 }, 505 { 506 DA9063_LDO(DA9063, LDO7, 900, 50, 3600), 507 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM), 508 }, 509 { 510 DA9063_LDO(DA9063, LDO8, 900, 50, 3600), 511 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM), 512 }, 513 { 514 DA9063_LDO(DA9063, LDO9, 950, 50, 3600), 515 }, 516 { 517 DA9063_LDO(DA9063, LDO11, 900, 50, 3600), 518 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM), 519 }, 520 521 /* The following LDOs are present only on DA9063, not on DA9063L */ 522 { 523 DA9063_LDO(DA9063, LDO1, 600, 20, 1860), 524 }, 525 { 526 DA9063_LDO(DA9063, LDO2, 600, 20, 1860), 527 }, 528 { 529 DA9063_LDO(DA9063, LDO4, 900, 20, 3440), 530 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM), 531 }, 532 { 533 DA9063_LDO(DA9063, LDO5, 900, 50, 3600), 534 }, 535 { 536 DA9063_LDO(DA9063, LDO6, 900, 50, 3600), 537 }, 538 539 { 540 DA9063_LDO(DA9063, LDO10, 900, 50, 3600), 541 }, 542}; 543 544/* Link chip model with regulators info table */ 545static struct da9063_dev_model regulators_models[] = { 546 { 547 .regulator_info = da9063_regulator_info, 548 .n_regulators = ARRAY_SIZE(da9063_regulator_info), 549 .type = PMIC_TYPE_DA9063, 550 }, 551 { 552 .regulator_info = da9063_regulator_info, 553 .n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6, 554 .type = PMIC_TYPE_DA9063L, 555 }, 556 { } 557}; 558 559/* Regulator interrupt handlers */ 560static irqreturn_t da9063_ldo_lim_event(int irq, void *data) 561{ 562 struct da9063_regulators *regulators = data; 563 struct da9063 *hw = regulators->regulator[0].hw; 564 struct da9063_regulator *regl; 565 int bits, i, ret; 566 567 ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits); 568 if (ret < 0) 569 return IRQ_NONE; 570 571 for (i = regulators->n_regulators - 1; i >= 0; i--) { 572 regl = ®ulators->regulator[i]; 573 if (regl->info->oc_event.reg != DA9063_REG_STATUS_D) 574 continue; 575 576 if (BIT(regl->info->oc_event.lsb) & bits) { 577 regulator_notifier_call_chain(regl->rdev, 578 REGULATOR_EVENT_OVER_CURRENT, NULL); 579 } 580 } 581 582 return IRQ_HANDLED; 583} 584 585/* 586 * Probing and Initialisation functions 587 */ 588static const struct regulator_init_data *da9063_get_regulator_initdata( 589 const struct da9063_regulators_pdata *regl_pdata, int id) 590{ 591 int i; 592 593 for (i = 0; i < regl_pdata->n_regulators; i++) { 594 if (id == regl_pdata->regulator_data[i].id) 595 return regl_pdata->regulator_data[i].initdata; 596 } 597 598 return NULL; 599} 600 601static struct of_regulator_match da9063_matches[] = { 602 [DA9063_ID_BCORE1] = { .name = "bcore1" }, 603 [DA9063_ID_BCORE2] = { .name = "bcore2" }, 604 [DA9063_ID_BPRO] = { .name = "bpro", }, 605 [DA9063_ID_BMEM] = { .name = "bmem", }, 606 [DA9063_ID_BIO] = { .name = "bio", }, 607 [DA9063_ID_BPERI] = { .name = "bperi", }, 608 [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, 609 [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, 610 [DA9063_ID_LDO3] = { .name = "ldo3", }, 611 [DA9063_ID_LDO7] = { .name = "ldo7", }, 612 [DA9063_ID_LDO8] = { .name = "ldo8", }, 613 [DA9063_ID_LDO9] = { .name = "ldo9", }, 614 [DA9063_ID_LDO11] = { .name = "ldo11", }, 615 /* The following LDOs are present only on DA9063, not on DA9063L */ 616 [DA9063_ID_LDO1] = { .name = "ldo1", }, 617 [DA9063_ID_LDO2] = { .name = "ldo2", }, 618 [DA9063_ID_LDO4] = { .name = "ldo4", }, 619 [DA9063_ID_LDO5] = { .name = "ldo5", }, 620 [DA9063_ID_LDO6] = { .name = "ldo6", }, 621 [DA9063_ID_LDO10] = { .name = "ldo10", }, 622}; 623 624static struct da9063_regulators_pdata *da9063_parse_regulators_dt( 625 struct platform_device *pdev, 626 struct of_regulator_match **da9063_reg_matches) 627{ 628 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 629 struct da9063_regulators_pdata *pdata; 630 struct da9063_regulator_data *rdata; 631 struct device_node *node; 632 int da9063_matches_len = ARRAY_SIZE(da9063_matches); 633 int i, n, num; 634 635 if (da9063->type == PMIC_TYPE_DA9063L) 636 da9063_matches_len -= 6; 637 638 node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); 639 if (!node) { 640 dev_err(&pdev->dev, "Regulators device node not found\n"); 641 return ERR_PTR(-ENODEV); 642 } 643 644 num = of_regulator_match(&pdev->dev, node, da9063_matches, 645 da9063_matches_len); 646 of_node_put(node); 647 if (num < 0) { 648 dev_err(&pdev->dev, "Failed to match regulators\n"); 649 return ERR_PTR(-EINVAL); 650 } 651 652 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); 653 if (!pdata) 654 return ERR_PTR(-ENOMEM); 655 656 pdata->regulator_data = devm_kcalloc(&pdev->dev, 657 num, sizeof(*pdata->regulator_data), 658 GFP_KERNEL); 659 if (!pdata->regulator_data) 660 return ERR_PTR(-ENOMEM); 661 pdata->n_regulators = num; 662 663 n = 0; 664 for (i = 0; i < da9063_matches_len; i++) { 665 if (!da9063_matches[i].init_data) 666 continue; 667 668 rdata = &pdata->regulator_data[n]; 669 rdata->id = i; 670 rdata->initdata = da9063_matches[i].init_data; 671 672 n++; 673 } 674 675 *da9063_reg_matches = da9063_matches; 676 return pdata; 677} 678 679static int da9063_regulator_probe(struct platform_device *pdev) 680{ 681 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 682 struct of_regulator_match *da9063_reg_matches = NULL; 683 struct da9063_regulators_pdata *regl_pdata; 684 const struct da9063_dev_model *model; 685 struct da9063_regulators *regulators; 686 struct da9063_regulator *regl; 687 struct regulator_config config; 688 bool bcores_merged, bmem_bio_merged; 689 int id, irq, n, n_regulators, ret, val; 690 691 regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches); 692 693 if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) { 694 dev_err(&pdev->dev, 695 "No regulators defined for the platform\n"); 696 return -ENODEV; 697 } 698 699 /* Find regulators set for particular device model */ 700 for (model = regulators_models; model->regulator_info; model++) { 701 if (model->type == da9063->type) 702 break; 703 } 704 if (!model->regulator_info) { 705 dev_err(&pdev->dev, "Chip model not recognised (%u)\n", 706 da9063->type); 707 return -ENODEV; 708 } 709 710 ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val); 711 if (ret < 0) { 712 dev_err(&pdev->dev, 713 "Error while reading BUCKs configuration\n"); 714 return ret; 715 } 716 bcores_merged = val & DA9063_BCORE_MERGE; 717 bmem_bio_merged = val & DA9063_BUCK_MERGE; 718 719 n_regulators = model->n_regulators; 720 if (bcores_merged) 721 n_regulators -= 2; /* remove BCORE1, BCORE2 */ 722 else 723 n_regulators--; /* remove BCORES_MERGED */ 724 if (bmem_bio_merged) 725 n_regulators -= 2; /* remove BMEM, BIO */ 726 else 727 n_regulators--; /* remove BMEM_BIO_MERGED */ 728 729 /* Allocate memory required by usable regulators */ 730 regulators = devm_kzalloc(&pdev->dev, struct_size(regulators, 731 regulator, n_regulators), GFP_KERNEL); 732 if (!regulators) 733 return -ENOMEM; 734 735 regulators->n_regulators = n_regulators; 736 platform_set_drvdata(pdev, regulators); 737 738 /* Register all regulators declared in platform information */ 739 n = 0; 740 id = 0; 741 while (n < regulators->n_regulators) { 742 /* Skip regulator IDs depending on merge mode configuration */ 743 switch (id) { 744 case DA9063_ID_BCORE1: 745 case DA9063_ID_BCORE2: 746 if (bcores_merged) { 747 id++; 748 continue; 749 } 750 break; 751 case DA9063_ID_BMEM: 752 case DA9063_ID_BIO: 753 if (bmem_bio_merged) { 754 id++; 755 continue; 756 } 757 break; 758 case DA9063_ID_BCORES_MERGED: 759 if (!bcores_merged) { 760 id++; 761 continue; 762 } 763 break; 764 case DA9063_ID_BMEM_BIO_MERGED: 765 if (!bmem_bio_merged) { 766 id++; 767 continue; 768 } 769 break; 770 } 771 772 /* Initialise regulator structure */ 773 regl = ®ulators->regulator[n]; 774 regl->hw = da9063; 775 regl->info = &model->regulator_info[id]; 776 regl->desc = regl->info->desc; 777 regl->desc.type = REGULATOR_VOLTAGE; 778 regl->desc.owner = THIS_MODULE; 779 780 if (regl->info->mode.reg) { 781 regl->mode = devm_regmap_field_alloc(&pdev->dev, 782 da9063->regmap, regl->info->mode); 783 if (IS_ERR(regl->mode)) 784 return PTR_ERR(regl->mode); 785 } 786 787 if (regl->info->suspend.reg) { 788 regl->suspend = devm_regmap_field_alloc(&pdev->dev, 789 da9063->regmap, regl->info->suspend); 790 if (IS_ERR(regl->suspend)) 791 return PTR_ERR(regl->suspend); 792 } 793 794 if (regl->info->sleep.reg) { 795 regl->sleep = devm_regmap_field_alloc(&pdev->dev, 796 da9063->regmap, regl->info->sleep); 797 if (IS_ERR(regl->sleep)) 798 return PTR_ERR(regl->sleep); 799 } 800 801 if (regl->info->suspend_sleep.reg) { 802 regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev, 803 da9063->regmap, regl->info->suspend_sleep); 804 if (IS_ERR(regl->suspend_sleep)) 805 return PTR_ERR(regl->suspend_sleep); 806 } 807 808 /* Register regulator */ 809 memset(&config, 0, sizeof(config)); 810 config.dev = &pdev->dev; 811 config.init_data = da9063_get_regulator_initdata(regl_pdata, id); 812 config.driver_data = regl; 813 if (da9063_reg_matches) 814 config.of_node = da9063_reg_matches[id].of_node; 815 config.regmap = da9063->regmap; 816 regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, 817 &config); 818 if (IS_ERR(regl->rdev)) { 819 dev_err(&pdev->dev, 820 "Failed to register %s regulator\n", 821 regl->desc.name); 822 return PTR_ERR(regl->rdev); 823 } 824 id++; 825 n++; 826 } 827 828 /* LDOs overcurrent event support */ 829 irq = platform_get_irq_byname(pdev, "LDO_LIM"); 830 if (irq < 0) 831 return irq; 832 833 ret = devm_request_threaded_irq(&pdev->dev, irq, 834 NULL, da9063_ldo_lim_event, 835 IRQF_TRIGGER_LOW | IRQF_ONESHOT, 836 "LDO_LIM", regulators); 837 if (ret) 838 dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n"); 839 840 return ret; 841} 842 843static struct platform_driver da9063_regulator_driver = { 844 .driver = { 845 .name = DA9063_DRVNAME_REGULATORS, 846 }, 847 .probe = da9063_regulator_probe, 848}; 849 850static int __init da9063_regulator_init(void) 851{ 852 return platform_driver_register(&da9063_regulator_driver); 853} 854subsys_initcall(da9063_regulator_init); 855 856static void __exit da9063_regulator_cleanup(void) 857{ 858 platform_driver_unregister(&da9063_regulator_driver); 859} 860module_exit(da9063_regulator_cleanup); 861 862 863/* Module information */ 864MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>"); 865MODULE_DESCRIPTION("DA9063 regulators driver"); 866MODULE_LICENSE("GPL"); 867MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS); 868