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 */ 31 enum { 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 */ 63 struct da9063_regulator_data { 64 int id; 65 struct regulator_init_data *initdata; 66 }; 67 68 struct da9063_regulators_pdata { 69 unsigned int n_regulators; 70 struct da9063_regulator_data *regulator_data; 71 }; 72 73 /* Regulator capabilities and registers description */ 74 struct 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 */ 134 struct 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 */ 141 struct 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 */ 154 struct 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 */ 161 enum { 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 */ 174 static 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 */ 183 static 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 */ 192 static 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 */ 201 static 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 }; 205 206 static 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 */ 233 234 static 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 */ 271 272 static 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 } 290 291 static 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 } 305 306 static 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 } 322 323 static 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 } 339 340 static 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 } 357 358 static 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 } 364 365 static 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 } 371 372 static 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 } 394 395 static 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 } 414 415 static 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 }; 432 433 static 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 */ 450 static 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 */ 545 static 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 */ 560 static 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_lock(regl->rdev); 578 regulator_notifier_call_chain(regl->rdev, 579 REGULATOR_EVENT_OVER_CURRENT, NULL); 580 regulator_unlock(regl->rdev); 581 } 582 } 583 584 return IRQ_HANDLED; 585 } 586 587 /* 588 * Probing and Initialisation functions 589 */ 590 static const struct regulator_init_data *da9063_get_regulator_initdata( 591 const struct da9063_regulators_pdata *regl_pdata, int id) 592 { 593 int i; 594 595 for (i = 0; i < regl_pdata->n_regulators; i++) { 596 if (id == regl_pdata->regulator_data[i].id) 597 return regl_pdata->regulator_data[i].initdata; 598 } 599 600 return NULL; 601 } 602 603 static struct of_regulator_match da9063_matches[] = { 604 [DA9063_ID_BCORE1] = { .name = "bcore1" }, 605 [DA9063_ID_BCORE2] = { .name = "bcore2" }, 606 [DA9063_ID_BPRO] = { .name = "bpro", }, 607 [DA9063_ID_BMEM] = { .name = "bmem", }, 608 [DA9063_ID_BIO] = { .name = "bio", }, 609 [DA9063_ID_BPERI] = { .name = "bperi", }, 610 [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, 611 [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, 612 [DA9063_ID_LDO3] = { .name = "ldo3", }, 613 [DA9063_ID_LDO7] = { .name = "ldo7", }, 614 [DA9063_ID_LDO8] = { .name = "ldo8", }, 615 [DA9063_ID_LDO9] = { .name = "ldo9", }, 616 [DA9063_ID_LDO11] = { .name = "ldo11", }, 617 /* The following LDOs are present only on DA9063, not on DA9063L */ 618 [DA9063_ID_LDO1] = { .name = "ldo1", }, 619 [DA9063_ID_LDO2] = { .name = "ldo2", }, 620 [DA9063_ID_LDO4] = { .name = "ldo4", }, 621 [DA9063_ID_LDO5] = { .name = "ldo5", }, 622 [DA9063_ID_LDO6] = { .name = "ldo6", }, 623 [DA9063_ID_LDO10] = { .name = "ldo10", }, 624 }; 625 626 static struct da9063_regulators_pdata *da9063_parse_regulators_dt( 627 struct platform_device *pdev, 628 struct of_regulator_match **da9063_reg_matches) 629 { 630 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 631 struct da9063_regulators_pdata *pdata; 632 struct da9063_regulator_data *rdata; 633 struct device_node *node; 634 int da9063_matches_len = ARRAY_SIZE(da9063_matches); 635 int i, n, num; 636 637 if (da9063->type == PMIC_TYPE_DA9063L) 638 da9063_matches_len -= 6; 639 640 node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); 641 if (!node) { 642 dev_err(&pdev->dev, "Regulators device node not found\n"); 643 return ERR_PTR(-ENODEV); 644 } 645 646 num = of_regulator_match(&pdev->dev, node, da9063_matches, 647 da9063_matches_len); 648 of_node_put(node); 649 if (num < 0) { 650 dev_err(&pdev->dev, "Failed to match regulators\n"); 651 return ERR_PTR(-EINVAL); 652 } 653 654 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); 655 if (!pdata) 656 return ERR_PTR(-ENOMEM); 657 658 pdata->regulator_data = devm_kcalloc(&pdev->dev, 659 num, sizeof(*pdata->regulator_data), 660 GFP_KERNEL); 661 if (!pdata->regulator_data) 662 return ERR_PTR(-ENOMEM); 663 pdata->n_regulators = num; 664 665 n = 0; 666 for (i = 0; i < da9063_matches_len; i++) { 667 if (!da9063_matches[i].init_data) 668 continue; 669 670 rdata = &pdata->regulator_data[n]; 671 rdata->id = i; 672 rdata->initdata = da9063_matches[i].init_data; 673 674 n++; 675 } 676 677 *da9063_reg_matches = da9063_matches; 678 return pdata; 679 } 680 681 static int da9063_regulator_probe(struct platform_device *pdev) 682 { 683 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 684 struct of_regulator_match *da9063_reg_matches = NULL; 685 struct da9063_regulators_pdata *regl_pdata; 686 const struct da9063_dev_model *model; 687 struct da9063_regulators *regulators; 688 struct da9063_regulator *regl; 689 struct regulator_config config; 690 bool bcores_merged, bmem_bio_merged; 691 int id, irq, n, n_regulators, ret, val; 692 693 regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches); 694 695 if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) { 696 dev_err(&pdev->dev, 697 "No regulators defined for the platform\n"); 698 return -ENODEV; 699 } 700 701 /* Find regulators set for particular device model */ 702 for (model = regulators_models; model->regulator_info; model++) { 703 if (model->type == da9063->type) 704 break; 705 } 706 if (!model->regulator_info) { 707 dev_err(&pdev->dev, "Chip model not recognised (%u)\n", 708 da9063->type); 709 return -ENODEV; 710 } 711 712 ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val); 713 if (ret < 0) { 714 dev_err(&pdev->dev, 715 "Error while reading BUCKs configuration\n"); 716 return ret; 717 } 718 bcores_merged = val & DA9063_BCORE_MERGE; 719 bmem_bio_merged = val & DA9063_BUCK_MERGE; 720 721 n_regulators = model->n_regulators; 722 if (bcores_merged) 723 n_regulators -= 2; /* remove BCORE1, BCORE2 */ 724 else 725 n_regulators--; /* remove BCORES_MERGED */ 726 if (bmem_bio_merged) 727 n_regulators -= 2; /* remove BMEM, BIO */ 728 else 729 n_regulators--; /* remove BMEM_BIO_MERGED */ 730 731 /* Allocate memory required by usable regulators */ 732 regulators = devm_kzalloc(&pdev->dev, struct_size(regulators, 733 regulator, n_regulators), GFP_KERNEL); 734 if (!regulators) 735 return -ENOMEM; 736 737 regulators->n_regulators = n_regulators; 738 platform_set_drvdata(pdev, regulators); 739 740 /* Register all regulators declared in platform information */ 741 n = 0; 742 id = 0; 743 while (n < regulators->n_regulators) { 744 /* Skip regulator IDs depending on merge mode configuration */ 745 switch (id) { 746 case DA9063_ID_BCORE1: 747 case DA9063_ID_BCORE2: 748 if (bcores_merged) { 749 id++; 750 continue; 751 } 752 break; 753 case DA9063_ID_BMEM: 754 case DA9063_ID_BIO: 755 if (bmem_bio_merged) { 756 id++; 757 continue; 758 } 759 break; 760 case DA9063_ID_BCORES_MERGED: 761 if (!bcores_merged) { 762 id++; 763 continue; 764 } 765 break; 766 case DA9063_ID_BMEM_BIO_MERGED: 767 if (!bmem_bio_merged) { 768 id++; 769 continue; 770 } 771 break; 772 } 773 774 /* Initialise regulator structure */ 775 regl = ®ulators->regulator[n]; 776 regl->hw = da9063; 777 regl->info = &model->regulator_info[id]; 778 regl->desc = regl->info->desc; 779 regl->desc.type = REGULATOR_VOLTAGE; 780 regl->desc.owner = THIS_MODULE; 781 782 if (regl->info->mode.reg) { 783 regl->mode = devm_regmap_field_alloc(&pdev->dev, 784 da9063->regmap, regl->info->mode); 785 if (IS_ERR(regl->mode)) 786 return PTR_ERR(regl->mode); 787 } 788 789 if (regl->info->suspend.reg) { 790 regl->suspend = devm_regmap_field_alloc(&pdev->dev, 791 da9063->regmap, regl->info->suspend); 792 if (IS_ERR(regl->suspend)) 793 return PTR_ERR(regl->suspend); 794 } 795 796 if (regl->info->sleep.reg) { 797 regl->sleep = devm_regmap_field_alloc(&pdev->dev, 798 da9063->regmap, regl->info->sleep); 799 if (IS_ERR(regl->sleep)) 800 return PTR_ERR(regl->sleep); 801 } 802 803 if (regl->info->suspend_sleep.reg) { 804 regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev, 805 da9063->regmap, regl->info->suspend_sleep); 806 if (IS_ERR(regl->suspend_sleep)) 807 return PTR_ERR(regl->suspend_sleep); 808 } 809 810 /* Register regulator */ 811 memset(&config, 0, sizeof(config)); 812 config.dev = &pdev->dev; 813 config.init_data = da9063_get_regulator_initdata(regl_pdata, id); 814 config.driver_data = regl; 815 if (da9063_reg_matches) 816 config.of_node = da9063_reg_matches[id].of_node; 817 config.regmap = da9063->regmap; 818 regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, 819 &config); 820 if (IS_ERR(regl->rdev)) { 821 dev_err(&pdev->dev, 822 "Failed to register %s regulator\n", 823 regl->desc.name); 824 return PTR_ERR(regl->rdev); 825 } 826 id++; 827 n++; 828 } 829 830 /* LDOs overcurrent event support */ 831 irq = platform_get_irq_byname(pdev, "LDO_LIM"); 832 if (irq < 0) 833 return irq; 834 835 ret = devm_request_threaded_irq(&pdev->dev, irq, 836 NULL, da9063_ldo_lim_event, 837 IRQF_TRIGGER_LOW | IRQF_ONESHOT, 838 "LDO_LIM", regulators); 839 if (ret) 840 dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n"); 841 842 return ret; 843 } 844 845 static struct platform_driver da9063_regulator_driver = { 846 .driver = { 847 .name = DA9063_DRVNAME_REGULATORS, 848 }, 849 .probe = da9063_regulator_probe, 850 }; 851 852 static int __init da9063_regulator_init(void) 853 { 854 return platform_driver_register(&da9063_regulator_driver); 855 } 856 subsys_initcall(da9063_regulator_init); 857 858 static void __exit da9063_regulator_cleanup(void) 859 { 860 platform_driver_unregister(&da9063_regulator_driver); 861 } 862 module_exit(da9063_regulator_cleanup); 863 864 865 /* Module information */ 866 MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>"); 867 MODULE_DESCRIPTION("DA9063 regulators driver"); 868 MODULE_LICENSE("GPL"); 869 MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS); 870