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 .suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL), 516 }, 517 { 518 DA9063_LDO(DA9063, LDO11, 900, 50, 3600), 519 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM), 520 }, 521 522 /* The following LDOs are present only on DA9063, not on DA9063L */ 523 { 524 DA9063_LDO(DA9063, LDO1, 600, 20, 1860), 525 }, 526 { 527 DA9063_LDO(DA9063, LDO2, 600, 20, 1860), 528 }, 529 { 530 DA9063_LDO(DA9063, LDO4, 900, 20, 3440), 531 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM), 532 }, 533 { 534 DA9063_LDO(DA9063, LDO5, 900, 50, 3600), 535 }, 536 { 537 DA9063_LDO(DA9063, LDO6, 900, 50, 3600), 538 }, 539 540 { 541 DA9063_LDO(DA9063, LDO10, 900, 50, 3600), 542 }, 543 }; 544 545 /* Link chip model with regulators info table */ 546 static struct da9063_dev_model regulators_models[] = { 547 { 548 .regulator_info = da9063_regulator_info, 549 .n_regulators = ARRAY_SIZE(da9063_regulator_info), 550 .type = PMIC_TYPE_DA9063, 551 }, 552 { 553 .regulator_info = da9063_regulator_info, 554 .n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6, 555 .type = PMIC_TYPE_DA9063L, 556 }, 557 { } 558 }; 559 560 /* Regulator interrupt handlers */ 561 static irqreturn_t da9063_ldo_lim_event(int irq, void *data) 562 { 563 struct da9063_regulators *regulators = data; 564 struct da9063 *hw = regulators->regulator[0].hw; 565 struct da9063_regulator *regl; 566 int bits, i, ret; 567 568 ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits); 569 if (ret < 0) 570 return IRQ_NONE; 571 572 for (i = regulators->n_regulators - 1; i >= 0; i--) { 573 regl = ®ulators->regulator[i]; 574 if (regl->info->oc_event.reg != DA9063_REG_STATUS_D) 575 continue; 576 577 if (BIT(regl->info->oc_event.lsb) & bits) { 578 regulator_lock(regl->rdev); 579 regulator_notifier_call_chain(regl->rdev, 580 REGULATOR_EVENT_OVER_CURRENT, NULL); 581 regulator_unlock(regl->rdev); 582 } 583 } 584 585 return IRQ_HANDLED; 586 } 587 588 /* 589 * Probing and Initialisation functions 590 */ 591 static const struct regulator_init_data *da9063_get_regulator_initdata( 592 const struct da9063_regulators_pdata *regl_pdata, int id) 593 { 594 int i; 595 596 for (i = 0; i < regl_pdata->n_regulators; i++) { 597 if (id == regl_pdata->regulator_data[i].id) 598 return regl_pdata->regulator_data[i].initdata; 599 } 600 601 return NULL; 602 } 603 604 static struct of_regulator_match da9063_matches[] = { 605 [DA9063_ID_BCORE1] = { .name = "bcore1" }, 606 [DA9063_ID_BCORE2] = { .name = "bcore2" }, 607 [DA9063_ID_BPRO] = { .name = "bpro", }, 608 [DA9063_ID_BMEM] = { .name = "bmem", }, 609 [DA9063_ID_BIO] = { .name = "bio", }, 610 [DA9063_ID_BPERI] = { .name = "bperi", }, 611 [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, 612 [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, 613 [DA9063_ID_LDO3] = { .name = "ldo3", }, 614 [DA9063_ID_LDO7] = { .name = "ldo7", }, 615 [DA9063_ID_LDO8] = { .name = "ldo8", }, 616 [DA9063_ID_LDO9] = { .name = "ldo9", }, 617 [DA9063_ID_LDO11] = { .name = "ldo11", }, 618 /* The following LDOs are present only on DA9063, not on DA9063L */ 619 [DA9063_ID_LDO1] = { .name = "ldo1", }, 620 [DA9063_ID_LDO2] = { .name = "ldo2", }, 621 [DA9063_ID_LDO4] = { .name = "ldo4", }, 622 [DA9063_ID_LDO5] = { .name = "ldo5", }, 623 [DA9063_ID_LDO6] = { .name = "ldo6", }, 624 [DA9063_ID_LDO10] = { .name = "ldo10", }, 625 }; 626 627 static struct da9063_regulators_pdata *da9063_parse_regulators_dt( 628 struct platform_device *pdev, 629 struct of_regulator_match **da9063_reg_matches) 630 { 631 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 632 struct da9063_regulators_pdata *pdata; 633 struct da9063_regulator_data *rdata; 634 struct device_node *node; 635 int da9063_matches_len = ARRAY_SIZE(da9063_matches); 636 int i, n, num; 637 638 if (da9063->type == PMIC_TYPE_DA9063L) 639 da9063_matches_len -= 6; 640 641 node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); 642 if (!node) { 643 dev_err(&pdev->dev, "Regulators device node not found\n"); 644 return ERR_PTR(-ENODEV); 645 } 646 647 num = of_regulator_match(&pdev->dev, node, da9063_matches, 648 da9063_matches_len); 649 of_node_put(node); 650 if (num < 0) { 651 dev_err(&pdev->dev, "Failed to match regulators\n"); 652 return ERR_PTR(-EINVAL); 653 } 654 655 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); 656 if (!pdata) 657 return ERR_PTR(-ENOMEM); 658 659 pdata->regulator_data = devm_kcalloc(&pdev->dev, 660 num, sizeof(*pdata->regulator_data), 661 GFP_KERNEL); 662 if (!pdata->regulator_data) 663 return ERR_PTR(-ENOMEM); 664 pdata->n_regulators = num; 665 666 n = 0; 667 for (i = 0; i < da9063_matches_len; i++) { 668 if (!da9063_matches[i].init_data) 669 continue; 670 671 rdata = &pdata->regulator_data[n]; 672 rdata->id = i; 673 rdata->initdata = da9063_matches[i].init_data; 674 675 n++; 676 } 677 678 *da9063_reg_matches = da9063_matches; 679 return pdata; 680 } 681 682 static int da9063_regulator_probe(struct platform_device *pdev) 683 { 684 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 685 struct of_regulator_match *da9063_reg_matches = NULL; 686 struct da9063_regulators_pdata *regl_pdata; 687 const struct da9063_dev_model *model; 688 struct da9063_regulators *regulators; 689 struct da9063_regulator *regl; 690 struct regulator_config config; 691 bool bcores_merged, bmem_bio_merged; 692 int id, irq, n, n_regulators, ret, val; 693 694 regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches); 695 696 if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) { 697 dev_err(&pdev->dev, 698 "No regulators defined for the platform\n"); 699 return -ENODEV; 700 } 701 702 /* Find regulators set for particular device model */ 703 for (model = regulators_models; model->regulator_info; model++) { 704 if (model->type == da9063->type) 705 break; 706 } 707 if (!model->regulator_info) { 708 dev_err(&pdev->dev, "Chip model not recognised (%u)\n", 709 da9063->type); 710 return -ENODEV; 711 } 712 713 ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val); 714 if (ret < 0) { 715 dev_err(&pdev->dev, 716 "Error while reading BUCKs configuration\n"); 717 return ret; 718 } 719 bcores_merged = val & DA9063_BCORE_MERGE; 720 bmem_bio_merged = val & DA9063_BUCK_MERGE; 721 722 n_regulators = model->n_regulators; 723 if (bcores_merged) 724 n_regulators -= 2; /* remove BCORE1, BCORE2 */ 725 else 726 n_regulators--; /* remove BCORES_MERGED */ 727 if (bmem_bio_merged) 728 n_regulators -= 2; /* remove BMEM, BIO */ 729 else 730 n_regulators--; /* remove BMEM_BIO_MERGED */ 731 732 /* Allocate memory required by usable regulators */ 733 regulators = devm_kzalloc(&pdev->dev, struct_size(regulators, 734 regulator, n_regulators), GFP_KERNEL); 735 if (!regulators) 736 return -ENOMEM; 737 738 regulators->n_regulators = n_regulators; 739 platform_set_drvdata(pdev, regulators); 740 741 /* Register all regulators declared in platform information */ 742 n = 0; 743 id = 0; 744 while (n < regulators->n_regulators) { 745 /* Skip regulator IDs depending on merge mode configuration */ 746 switch (id) { 747 case DA9063_ID_BCORE1: 748 case DA9063_ID_BCORE2: 749 if (bcores_merged) { 750 id++; 751 continue; 752 } 753 break; 754 case DA9063_ID_BMEM: 755 case DA9063_ID_BIO: 756 if (bmem_bio_merged) { 757 id++; 758 continue; 759 } 760 break; 761 case DA9063_ID_BCORES_MERGED: 762 if (!bcores_merged) { 763 id++; 764 continue; 765 } 766 break; 767 case DA9063_ID_BMEM_BIO_MERGED: 768 if (!bmem_bio_merged) { 769 id++; 770 continue; 771 } 772 break; 773 } 774 775 /* Initialise regulator structure */ 776 regl = ®ulators->regulator[n]; 777 regl->hw = da9063; 778 regl->info = &model->regulator_info[id]; 779 regl->desc = regl->info->desc; 780 regl->desc.type = REGULATOR_VOLTAGE; 781 regl->desc.owner = THIS_MODULE; 782 783 if (regl->info->mode.reg) { 784 regl->mode = devm_regmap_field_alloc(&pdev->dev, 785 da9063->regmap, regl->info->mode); 786 if (IS_ERR(regl->mode)) 787 return PTR_ERR(regl->mode); 788 } 789 790 if (regl->info->suspend.reg) { 791 regl->suspend = devm_regmap_field_alloc(&pdev->dev, 792 da9063->regmap, regl->info->suspend); 793 if (IS_ERR(regl->suspend)) 794 return PTR_ERR(regl->suspend); 795 } 796 797 if (regl->info->sleep.reg) { 798 regl->sleep = devm_regmap_field_alloc(&pdev->dev, 799 da9063->regmap, regl->info->sleep); 800 if (IS_ERR(regl->sleep)) 801 return PTR_ERR(regl->sleep); 802 } 803 804 if (regl->info->suspend_sleep.reg) { 805 regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev, 806 da9063->regmap, regl->info->suspend_sleep); 807 if (IS_ERR(regl->suspend_sleep)) 808 return PTR_ERR(regl->suspend_sleep); 809 } 810 811 /* Register regulator */ 812 memset(&config, 0, sizeof(config)); 813 config.dev = &pdev->dev; 814 config.init_data = da9063_get_regulator_initdata(regl_pdata, id); 815 config.driver_data = regl; 816 if (da9063_reg_matches) 817 config.of_node = da9063_reg_matches[id].of_node; 818 config.regmap = da9063->regmap; 819 regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, 820 &config); 821 if (IS_ERR(regl->rdev)) { 822 dev_err(&pdev->dev, 823 "Failed to register %s regulator\n", 824 regl->desc.name); 825 return PTR_ERR(regl->rdev); 826 } 827 id++; 828 n++; 829 } 830 831 /* LDOs overcurrent event support */ 832 irq = platform_get_irq_byname(pdev, "LDO_LIM"); 833 if (irq < 0) 834 return irq; 835 836 ret = devm_request_threaded_irq(&pdev->dev, irq, 837 NULL, da9063_ldo_lim_event, 838 IRQF_TRIGGER_LOW | IRQF_ONESHOT, 839 "LDO_LIM", regulators); 840 if (ret) 841 dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n"); 842 843 return ret; 844 } 845 846 static struct platform_driver da9063_regulator_driver = { 847 .driver = { 848 .name = DA9063_DRVNAME_REGULATORS, 849 }, 850 .probe = da9063_regulator_probe, 851 }; 852 853 static int __init da9063_regulator_init(void) 854 { 855 return platform_driver_register(&da9063_regulator_driver); 856 } 857 subsys_initcall(da9063_regulator_init); 858 859 static void __exit da9063_regulator_cleanup(void) 860 { 861 platform_driver_unregister(&da9063_regulator_driver); 862 } 863 module_exit(da9063_regulator_cleanup); 864 865 866 /* Module information */ 867 MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>"); 868 MODULE_DESCRIPTION("DA9063 regulators driver"); 869 MODULE_LICENSE("GPL"); 870 MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS); 871