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/pdata.h> 23 #include <linux/mfd/da9063/registers.h> 24 25 26 /* Definition for registering regmap bit fields using a mask */ 27 #define BFIELD(_reg, _mask) \ 28 REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \ 29 sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1) 30 31 /* Regulator capabilities and registers description */ 32 struct da9063_regulator_info { 33 struct regulator_desc desc; 34 35 /* DA9063 main register fields */ 36 struct reg_field mode; /* buck mode of operation */ 37 struct reg_field suspend; 38 struct reg_field sleep; 39 struct reg_field suspend_sleep; 40 unsigned int suspend_vsel_reg; 41 42 /* DA9063 event detection bit */ 43 struct reg_field oc_event; 44 }; 45 46 /* Macros for LDO */ 47 #define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \ 48 .desc.id = chip##_ID_##regl_name, \ 49 .desc.name = __stringify(chip##_##regl_name), \ 50 .desc.ops = &da9063_ldo_ops, \ 51 .desc.min_uV = (min_mV) * 1000, \ 52 .desc.uV_step = (step_mV) * 1000, \ 53 .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \ 54 + (DA9063_V##regl_name##_BIAS)), \ 55 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ 56 .desc.enable_mask = DA9063_LDO_EN, \ 57 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ 58 .desc.vsel_mask = DA9063_V##regl_name##_MASK, \ 59 .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \ 60 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \ 61 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \ 62 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B 63 64 /* Macros for voltage DC/DC converters (BUCKs) */ 65 #define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \ 66 creg, cmask) \ 67 .desc.id = chip##_ID_##regl_name, \ 68 .desc.name = __stringify(chip##_##regl_name), \ 69 .desc.ops = &da9063_buck_ops, \ 70 .desc.min_uV = (min_mV) * 1000, \ 71 .desc.uV_step = (step_mV) * 1000, \ 72 .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \ 73 .desc.csel_reg = (creg), \ 74 .desc.csel_mask = (cmask), \ 75 .desc.curr_table = limits_array, \ 76 .desc.n_current_limits = ARRAY_SIZE(limits_array) 77 78 #define DA9063_BUCK_COMMON_FIELDS(regl_name) \ 79 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ 80 .desc.enable_mask = DA9063_BUCK_EN, \ 81 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ 82 .desc.vsel_mask = DA9063_VBUCK_MASK, \ 83 .desc.linear_min_sel = DA9063_VBUCK_BIAS, \ 84 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \ 85 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \ 86 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \ 87 .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK) 88 89 /* Defines asignment of regulators info table to chip model */ 90 struct da9063_dev_model { 91 const struct da9063_regulator_info *regulator_info; 92 unsigned n_regulators; 93 enum da9063_type type; 94 }; 95 96 /* Single regulator settings */ 97 struct da9063_regulator { 98 struct regulator_desc desc; 99 struct regulator_dev *rdev; 100 struct da9063 *hw; 101 const struct da9063_regulator_info *info; 102 103 struct regmap_field *mode; 104 struct regmap_field *suspend; 105 struct regmap_field *sleep; 106 struct regmap_field *suspend_sleep; 107 }; 108 109 /* Encapsulates all information for the regulators driver */ 110 struct da9063_regulators { 111 unsigned n_regulators; 112 /* Array size to be defined during init. Keep at end. */ 113 struct da9063_regulator regulator[0]; 114 }; 115 116 /* BUCK modes for DA9063 */ 117 enum { 118 BUCK_MODE_MANUAL, /* 0 */ 119 BUCK_MODE_SLEEP, /* 1 */ 120 BUCK_MODE_SYNC, /* 2 */ 121 BUCK_MODE_AUTO /* 3 */ 122 }; 123 124 /* Regulator operations */ 125 126 /* Current limits array (in uA) for BCORE1, BCORE2, BPRO. 127 Entry indexes corresponds to register values. */ 128 static const unsigned int da9063_buck_a_limits[] = { 129 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, 130 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 131 }; 132 133 /* Current limits array (in uA) for BMEM, BIO, BPERI. 134 Entry indexes corresponds to register values. */ 135 static const unsigned int da9063_buck_b_limits[] = { 136 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, 137 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 138 }; 139 140 /* Current limits array (in uA) for merged BCORE1 and BCORE2. 141 Entry indexes corresponds to register values. */ 142 static const unsigned int da9063_bcores_merged_limits[] = { 143 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000, 144 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000 145 }; 146 147 /* Current limits array (in uA) for merged BMEM and BIO. 148 Entry indexes corresponds to register values. */ 149 static const unsigned int da9063_bmem_bio_merged_limits[] = { 150 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, 151 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000 152 }; 153 154 static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned mode) 155 { 156 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 157 unsigned val; 158 159 switch (mode) { 160 case REGULATOR_MODE_FAST: 161 val = BUCK_MODE_SYNC; 162 break; 163 case REGULATOR_MODE_NORMAL: 164 val = BUCK_MODE_AUTO; 165 break; 166 case REGULATOR_MODE_STANDBY: 167 val = BUCK_MODE_SLEEP; 168 break; 169 default: 170 return -EINVAL; 171 } 172 173 return regmap_field_write(regl->mode, val); 174 } 175 176 /* 177 * Bucks use single mode register field for normal operation 178 * and suspend state. 179 * There are 3 modes to map to: FAST, NORMAL, and STANDBY. 180 */ 181 182 static unsigned da9063_buck_get_mode(struct regulator_dev *rdev) 183 { 184 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 185 struct regmap_field *field; 186 unsigned int val, mode = 0; 187 int ret; 188 189 ret = regmap_field_read(regl->mode, &val); 190 if (ret < 0) 191 return ret; 192 193 switch (val) { 194 default: 195 case BUCK_MODE_MANUAL: 196 mode = REGULATOR_MODE_FAST | REGULATOR_MODE_STANDBY; 197 /* Sleep flag bit decides the mode */ 198 break; 199 case BUCK_MODE_SLEEP: 200 return REGULATOR_MODE_STANDBY; 201 case BUCK_MODE_SYNC: 202 return REGULATOR_MODE_FAST; 203 case BUCK_MODE_AUTO: 204 return REGULATOR_MODE_NORMAL; 205 } 206 207 /* Detect current regulator state */ 208 ret = regmap_field_read(regl->suspend, &val); 209 if (ret < 0) 210 return 0; 211 212 /* Read regulator mode from proper register, depending on state */ 213 if (val) 214 field = regl->suspend_sleep; 215 else 216 field = regl->sleep; 217 218 ret = regmap_field_read(field, &val); 219 if (ret < 0) 220 return 0; 221 222 if (val) 223 mode &= REGULATOR_MODE_STANDBY; 224 else 225 mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST; 226 227 return mode; 228 } 229 230 /* 231 * LDOs use sleep flags - one for normal and one for suspend state. 232 * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state. 233 */ 234 235 static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned mode) 236 { 237 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 238 unsigned val; 239 240 switch (mode) { 241 case REGULATOR_MODE_NORMAL: 242 val = 0; 243 break; 244 case REGULATOR_MODE_STANDBY: 245 val = 1; 246 break; 247 default: 248 return -EINVAL; 249 } 250 251 return regmap_field_write(regl->sleep, val); 252 } 253 254 static unsigned da9063_ldo_get_mode(struct regulator_dev *rdev) 255 { 256 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 257 struct regmap_field *field; 258 int ret, val; 259 260 /* Detect current regulator state */ 261 ret = regmap_field_read(regl->suspend, &val); 262 if (ret < 0) 263 return 0; 264 265 /* Read regulator mode from proper register, depending on state */ 266 if (val) 267 field = regl->suspend_sleep; 268 else 269 field = regl->sleep; 270 271 ret = regmap_field_read(field, &val); 272 if (ret < 0) 273 return 0; 274 275 if (val) 276 return REGULATOR_MODE_STANDBY; 277 else 278 return REGULATOR_MODE_NORMAL; 279 } 280 281 static int da9063_buck_get_status(struct regulator_dev *rdev) 282 { 283 int ret = regulator_is_enabled_regmap(rdev); 284 285 if (ret == 0) { 286 ret = REGULATOR_STATUS_OFF; 287 } else if (ret > 0) { 288 ret = da9063_buck_get_mode(rdev); 289 if (ret > 0) 290 ret = regulator_mode_to_status(ret); 291 else if (ret == 0) 292 ret = -EIO; 293 } 294 295 return ret; 296 } 297 298 static int da9063_ldo_get_status(struct regulator_dev *rdev) 299 { 300 int ret = regulator_is_enabled_regmap(rdev); 301 302 if (ret == 0) { 303 ret = REGULATOR_STATUS_OFF; 304 } else if (ret > 0) { 305 ret = da9063_ldo_get_mode(rdev); 306 if (ret > 0) 307 ret = regulator_mode_to_status(ret); 308 else if (ret == 0) 309 ret = -EIO; 310 } 311 312 return ret; 313 } 314 315 static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV) 316 { 317 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 318 const struct da9063_regulator_info *rinfo = regl->info; 319 int ret, sel; 320 321 sel = regulator_map_voltage_linear(rdev, uV, uV); 322 if (sel < 0) 323 return sel; 324 325 sel <<= ffs(rdev->desc->vsel_mask) - 1; 326 327 ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg, 328 rdev->desc->vsel_mask, sel); 329 330 return ret; 331 } 332 333 static int da9063_suspend_enable(struct regulator_dev *rdev) 334 { 335 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 336 337 return regmap_field_write(regl->suspend, 1); 338 } 339 340 static int da9063_suspend_disable(struct regulator_dev *rdev) 341 { 342 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 343 344 return regmap_field_write(regl->suspend, 0); 345 } 346 347 static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) 348 { 349 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 350 int val; 351 352 switch (mode) { 353 case REGULATOR_MODE_FAST: 354 val = BUCK_MODE_SYNC; 355 break; 356 case REGULATOR_MODE_NORMAL: 357 val = BUCK_MODE_AUTO; 358 break; 359 case REGULATOR_MODE_STANDBY: 360 val = BUCK_MODE_SLEEP; 361 break; 362 default: 363 return -EINVAL; 364 } 365 366 return regmap_field_write(regl->mode, val); 367 } 368 369 static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) 370 { 371 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 372 unsigned val; 373 374 switch (mode) { 375 case REGULATOR_MODE_NORMAL: 376 val = 0; 377 break; 378 case REGULATOR_MODE_STANDBY: 379 val = 1; 380 break; 381 default: 382 return -EINVAL; 383 } 384 385 return regmap_field_write(regl->suspend_sleep, val); 386 } 387 388 static const struct regulator_ops da9063_buck_ops = { 389 .enable = regulator_enable_regmap, 390 .disable = regulator_disable_regmap, 391 .is_enabled = regulator_is_enabled_regmap, 392 .get_voltage_sel = regulator_get_voltage_sel_regmap, 393 .set_voltage_sel = regulator_set_voltage_sel_regmap, 394 .list_voltage = regulator_list_voltage_linear, 395 .set_current_limit = regulator_set_current_limit_regmap, 396 .get_current_limit = regulator_get_current_limit_regmap, 397 .set_mode = da9063_buck_set_mode, 398 .get_mode = da9063_buck_get_mode, 399 .get_status = da9063_buck_get_status, 400 .set_suspend_voltage = da9063_set_suspend_voltage, 401 .set_suspend_enable = da9063_suspend_enable, 402 .set_suspend_disable = da9063_suspend_disable, 403 .set_suspend_mode = da9063_buck_set_suspend_mode, 404 }; 405 406 static const struct regulator_ops da9063_ldo_ops = { 407 .enable = regulator_enable_regmap, 408 .disable = regulator_disable_regmap, 409 .is_enabled = regulator_is_enabled_regmap, 410 .get_voltage_sel = regulator_get_voltage_sel_regmap, 411 .set_voltage_sel = regulator_set_voltage_sel_regmap, 412 .list_voltage = regulator_list_voltage_linear, 413 .set_mode = da9063_ldo_set_mode, 414 .get_mode = da9063_ldo_get_mode, 415 .get_status = da9063_ldo_get_status, 416 .set_suspend_voltage = da9063_set_suspend_voltage, 417 .set_suspend_enable = da9063_suspend_enable, 418 .set_suspend_disable = da9063_suspend_disable, 419 .set_suspend_mode = da9063_ldo_set_suspend_mode, 420 }; 421 422 /* Info of regulators for DA9063 */ 423 static const struct da9063_regulator_info da9063_regulator_info[] = { 424 { 425 DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570, 426 da9063_buck_a_limits, 427 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), 428 DA9063_BUCK_COMMON_FIELDS(BCORE1), 429 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), 430 }, 431 { 432 DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570, 433 da9063_buck_a_limits, 434 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK), 435 DA9063_BUCK_COMMON_FIELDS(BCORE2), 436 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL), 437 }, 438 { 439 DA9063_BUCK(DA9063, BPRO, 530, 10, 1800, 440 da9063_buck_a_limits, 441 DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK), 442 DA9063_BUCK_COMMON_FIELDS(BPRO), 443 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL), 444 }, 445 { 446 DA9063_BUCK(DA9063, BMEM, 800, 20, 3340, 447 da9063_buck_b_limits, 448 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), 449 DA9063_BUCK_COMMON_FIELDS(BMEM), 450 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), 451 }, 452 { 453 DA9063_BUCK(DA9063, BIO, 800, 20, 3340, 454 da9063_buck_b_limits, 455 DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK), 456 DA9063_BUCK_COMMON_FIELDS(BIO), 457 .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL), 458 }, 459 { 460 DA9063_BUCK(DA9063, BPERI, 800, 20, 3340, 461 da9063_buck_b_limits, 462 DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK), 463 DA9063_BUCK_COMMON_FIELDS(BPERI), 464 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL), 465 }, 466 { 467 DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570, 468 da9063_bcores_merged_limits, 469 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), 470 /* BCORES_MERGED uses the same register fields as BCORE1 */ 471 DA9063_BUCK_COMMON_FIELDS(BCORE1), 472 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), 473 }, 474 { 475 DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340, 476 da9063_bmem_bio_merged_limits, 477 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), 478 /* BMEM_BIO_MERGED uses the same register fields as BMEM */ 479 DA9063_BUCK_COMMON_FIELDS(BMEM), 480 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), 481 }, 482 { 483 DA9063_LDO(DA9063, LDO3, 900, 20, 3440), 484 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO3_SEL), 485 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM), 486 }, 487 { 488 DA9063_LDO(DA9063, LDO7, 900, 50, 3600), 489 .suspend = BFIELD(DA9063_REG_LDO7_CONT, DA9063_VLDO7_SEL), 490 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM), 491 }, 492 { 493 DA9063_LDO(DA9063, LDO8, 900, 50, 3600), 494 .suspend = BFIELD(DA9063_REG_LDO8_CONT, DA9063_VLDO8_SEL), 495 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM), 496 }, 497 { 498 DA9063_LDO(DA9063, LDO9, 950, 50, 3600), 499 .suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL), 500 }, 501 { 502 DA9063_LDO(DA9063, LDO11, 900, 50, 3600), 503 .suspend = BFIELD(DA9063_REG_LDO11_CONT, DA9063_VLDO11_SEL), 504 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM), 505 }, 506 507 /* The following LDOs are present only on DA9063, not on DA9063L */ 508 { 509 DA9063_LDO(DA9063, LDO1, 600, 20, 1860), 510 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO1_SEL), 511 }, 512 { 513 DA9063_LDO(DA9063, LDO2, 600, 20, 1860), 514 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO2_SEL), 515 }, 516 { 517 DA9063_LDO(DA9063, LDO4, 900, 20, 3440), 518 .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VLDO4_SEL), 519 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM), 520 }, 521 { 522 DA9063_LDO(DA9063, LDO5, 900, 50, 3600), 523 .suspend = BFIELD(DA9063_REG_LDO5_CONT, DA9063_VLDO5_SEL), 524 }, 525 { 526 DA9063_LDO(DA9063, LDO6, 900, 50, 3600), 527 .suspend = BFIELD(DA9063_REG_LDO6_CONT, DA9063_VLDO6_SEL), 528 }, 529 530 { 531 DA9063_LDO(DA9063, LDO10, 900, 50, 3600), 532 .suspend = BFIELD(DA9063_REG_LDO10_CONT, DA9063_VLDO10_SEL), 533 }, 534 }; 535 536 /* Link chip model with regulators info table */ 537 static struct da9063_dev_model regulators_models[] = { 538 { 539 .regulator_info = da9063_regulator_info, 540 .n_regulators = ARRAY_SIZE(da9063_regulator_info), 541 .type = PMIC_TYPE_DA9063, 542 }, 543 { 544 .regulator_info = da9063_regulator_info, 545 .n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6, 546 .type = PMIC_TYPE_DA9063L, 547 }, 548 { } 549 }; 550 551 /* Regulator interrupt handlers */ 552 static irqreturn_t da9063_ldo_lim_event(int irq, void *data) 553 { 554 struct da9063_regulators *regulators = data; 555 struct da9063 *hw = regulators->regulator[0].hw; 556 struct da9063_regulator *regl; 557 int bits, i , ret; 558 559 ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits); 560 if (ret < 0) 561 return IRQ_NONE; 562 563 for (i = regulators->n_regulators - 1; i >= 0; i--) { 564 regl = ®ulators->regulator[i]; 565 if (regl->info->oc_event.reg != DA9063_REG_STATUS_D) 566 continue; 567 568 if (BIT(regl->info->oc_event.lsb) & bits) { 569 regulator_lock(regl->rdev); 570 regulator_notifier_call_chain(regl->rdev, 571 REGULATOR_EVENT_OVER_CURRENT, NULL); 572 regulator_unlock(regl->rdev); 573 } 574 } 575 576 return IRQ_HANDLED; 577 } 578 579 /* 580 * Probing and Initialisation functions 581 */ 582 static const struct regulator_init_data *da9063_get_regulator_initdata( 583 const struct da9063_regulators_pdata *regl_pdata, int id) 584 { 585 int i; 586 587 for (i = 0; i < regl_pdata->n_regulators; i++) { 588 if (id == regl_pdata->regulator_data[i].id) 589 return regl_pdata->regulator_data[i].initdata; 590 } 591 592 return NULL; 593 } 594 595 #ifdef CONFIG_OF 596 static struct of_regulator_match da9063_matches[] = { 597 [DA9063_ID_BCORE1] = { .name = "bcore1" }, 598 [DA9063_ID_BCORE2] = { .name = "bcore2" }, 599 [DA9063_ID_BPRO] = { .name = "bpro", }, 600 [DA9063_ID_BMEM] = { .name = "bmem", }, 601 [DA9063_ID_BIO] = { .name = "bio", }, 602 [DA9063_ID_BPERI] = { .name = "bperi", }, 603 [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, 604 [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, 605 [DA9063_ID_LDO3] = { .name = "ldo3", }, 606 [DA9063_ID_LDO7] = { .name = "ldo7", }, 607 [DA9063_ID_LDO8] = { .name = "ldo8", }, 608 [DA9063_ID_LDO9] = { .name = "ldo9", }, 609 [DA9063_ID_LDO11] = { .name = "ldo11", }, 610 /* The following LDOs are present only on DA9063, not on DA9063L */ 611 [DA9063_ID_LDO1] = { .name = "ldo1", }, 612 [DA9063_ID_LDO2] = { .name = "ldo2", }, 613 [DA9063_ID_LDO4] = { .name = "ldo4", }, 614 [DA9063_ID_LDO5] = { .name = "ldo5", }, 615 [DA9063_ID_LDO6] = { .name = "ldo6", }, 616 [DA9063_ID_LDO10] = { .name = "ldo10", }, 617 }; 618 619 static struct da9063_regulators_pdata *da9063_parse_regulators_dt( 620 struct platform_device *pdev, 621 struct of_regulator_match **da9063_reg_matches) 622 { 623 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 624 struct da9063_regulators_pdata *pdata; 625 struct da9063_regulator_data *rdata; 626 struct device_node *node; 627 int da9063_matches_len = ARRAY_SIZE(da9063_matches); 628 int i, n, num; 629 630 if (da9063->type == PMIC_TYPE_DA9063L) 631 da9063_matches_len -= 6; 632 633 node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); 634 if (!node) { 635 dev_err(&pdev->dev, "Regulators device node not found\n"); 636 return ERR_PTR(-ENODEV); 637 } 638 639 num = of_regulator_match(&pdev->dev, node, da9063_matches, 640 da9063_matches_len); 641 of_node_put(node); 642 if (num < 0) { 643 dev_err(&pdev->dev, "Failed to match regulators\n"); 644 return ERR_PTR(-EINVAL); 645 } 646 647 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); 648 if (!pdata) 649 return ERR_PTR(-ENOMEM); 650 651 pdata->regulator_data = devm_kcalloc(&pdev->dev, 652 num, sizeof(*pdata->regulator_data), 653 GFP_KERNEL); 654 if (!pdata->regulator_data) 655 return ERR_PTR(-ENOMEM); 656 pdata->n_regulators = num; 657 658 n = 0; 659 for (i = 0; i < da9063_matches_len; i++) { 660 if (!da9063_matches[i].init_data) 661 continue; 662 663 rdata = &pdata->regulator_data[n]; 664 rdata->id = i; 665 rdata->initdata = da9063_matches[i].init_data; 666 667 n++; 668 } 669 670 *da9063_reg_matches = da9063_matches; 671 return pdata; 672 } 673 #else 674 static struct da9063_regulators_pdata *da9063_parse_regulators_dt( 675 struct platform_device *pdev, 676 struct of_regulator_match **da9063_reg_matches) 677 { 678 *da9063_reg_matches = NULL; 679 return ERR_PTR(-ENODEV); 680 } 681 #endif 682 683 static int da9063_regulator_probe(struct platform_device *pdev) 684 { 685 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 686 struct da9063_pdata *da9063_pdata = dev_get_platdata(da9063->dev); 687 struct of_regulator_match *da9063_reg_matches = NULL; 688 struct da9063_regulators_pdata *regl_pdata; 689 const struct da9063_dev_model *model; 690 struct da9063_regulators *regulators; 691 struct da9063_regulator *regl; 692 struct regulator_config config; 693 bool bcores_merged, bmem_bio_merged; 694 int id, irq, n, n_regulators, ret, val; 695 696 regl_pdata = da9063_pdata ? da9063_pdata->regulators_pdata : NULL; 697 698 if (!regl_pdata) 699 regl_pdata = da9063_parse_regulators_dt(pdev, 700 &da9063_reg_matches); 701 702 if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) { 703 dev_err(&pdev->dev, 704 "No regulators defined for the platform\n"); 705 return -ENODEV; 706 } 707 708 /* Find regulators set for particular device model */ 709 for (model = regulators_models; model->regulator_info; model++) { 710 if (model->type == da9063->type) 711 break; 712 } 713 if (!model->regulator_info) { 714 dev_err(&pdev->dev, "Chip model not recognised (%u)\n", 715 da9063->type); 716 return -ENODEV; 717 } 718 719 ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val); 720 if (ret < 0) { 721 dev_err(&pdev->dev, 722 "Error while reading BUCKs configuration\n"); 723 return ret; 724 } 725 bcores_merged = val & DA9063_BCORE_MERGE; 726 bmem_bio_merged = val & DA9063_BUCK_MERGE; 727 728 n_regulators = model->n_regulators; 729 if (bcores_merged) 730 n_regulators -= 2; /* remove BCORE1, BCORE2 */ 731 else 732 n_regulators--; /* remove BCORES_MERGED */ 733 if (bmem_bio_merged) 734 n_regulators -= 2; /* remove BMEM, BIO */ 735 else 736 n_regulators--; /* remove BMEM_BIO_MERGED */ 737 738 /* Allocate memory required by usable regulators */ 739 regulators = devm_kzalloc(&pdev->dev, struct_size(regulators, 740 regulator, n_regulators), GFP_KERNEL); 741 if (!regulators) 742 return -ENOMEM; 743 744 regulators->n_regulators = n_regulators; 745 platform_set_drvdata(pdev, regulators); 746 747 /* Register all regulators declared in platform information */ 748 n = 0; 749 id = 0; 750 while (n < regulators->n_regulators) { 751 /* Skip regulator IDs depending on merge mode configuration */ 752 switch (id) { 753 case DA9063_ID_BCORE1: 754 case DA9063_ID_BCORE2: 755 if (bcores_merged) { 756 id++; 757 continue; 758 } 759 break; 760 case DA9063_ID_BMEM: 761 case DA9063_ID_BIO: 762 if (bmem_bio_merged) { 763 id++; 764 continue; 765 } 766 break; 767 case DA9063_ID_BCORES_MERGED: 768 if (!bcores_merged) { 769 id++; 770 continue; 771 } 772 break; 773 case DA9063_ID_BMEM_BIO_MERGED: 774 if (!bmem_bio_merged) { 775 id++; 776 continue; 777 } 778 break; 779 } 780 781 /* Initialise regulator structure */ 782 regl = ®ulators->regulator[n]; 783 regl->hw = da9063; 784 regl->info = &model->regulator_info[id]; 785 regl->desc = regl->info->desc; 786 regl->desc.type = REGULATOR_VOLTAGE; 787 regl->desc.owner = THIS_MODULE; 788 789 if (regl->info->mode.reg) { 790 regl->mode = devm_regmap_field_alloc(&pdev->dev, 791 da9063->regmap, regl->info->mode); 792 if (IS_ERR(regl->mode)) 793 return PTR_ERR(regl->mode); 794 } 795 796 if (regl->info->suspend.reg) { 797 regl->suspend = devm_regmap_field_alloc(&pdev->dev, 798 da9063->regmap, regl->info->suspend); 799 if (IS_ERR(regl->suspend)) 800 return PTR_ERR(regl->suspend); 801 } 802 803 if (regl->info->sleep.reg) { 804 regl->sleep = devm_regmap_field_alloc(&pdev->dev, 805 da9063->regmap, regl->info->sleep); 806 if (IS_ERR(regl->sleep)) 807 return PTR_ERR(regl->sleep); 808 } 809 810 if (regl->info->suspend_sleep.reg) { 811 regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev, 812 da9063->regmap, regl->info->suspend_sleep); 813 if (IS_ERR(regl->suspend_sleep)) 814 return PTR_ERR(regl->suspend_sleep); 815 } 816 817 /* Register regulator */ 818 memset(&config, 0, sizeof(config)); 819 config.dev = &pdev->dev; 820 config.init_data = da9063_get_regulator_initdata(regl_pdata, id); 821 config.driver_data = regl; 822 if (da9063_reg_matches) 823 config.of_node = da9063_reg_matches[id].of_node; 824 config.regmap = da9063->regmap; 825 regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, 826 &config); 827 if (IS_ERR(regl->rdev)) { 828 dev_err(&pdev->dev, 829 "Failed to register %s regulator\n", 830 regl->desc.name); 831 return PTR_ERR(regl->rdev); 832 } 833 id++; 834 n++; 835 } 836 837 /* LDOs overcurrent event support */ 838 irq = platform_get_irq_byname(pdev, "LDO_LIM"); 839 if (irq < 0) { 840 dev_err(&pdev->dev, "Failed to get IRQ.\n"); 841 return irq; 842 } 843 844 ret = devm_request_threaded_irq(&pdev->dev, irq, 845 NULL, da9063_ldo_lim_event, 846 IRQF_TRIGGER_LOW | IRQF_ONESHOT, 847 "LDO_LIM", regulators); 848 if (ret) { 849 dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n"); 850 return ret; 851 } 852 853 return 0; 854 } 855 856 static struct platform_driver da9063_regulator_driver = { 857 .driver = { 858 .name = DA9063_DRVNAME_REGULATORS, 859 }, 860 .probe = da9063_regulator_probe, 861 }; 862 863 static int __init da9063_regulator_init(void) 864 { 865 return platform_driver_register(&da9063_regulator_driver); 866 } 867 subsys_initcall(da9063_regulator_init); 868 869 static void __exit da9063_regulator_cleanup(void) 870 { 871 platform_driver_unregister(&da9063_regulator_driver); 872 } 873 module_exit(da9063_regulator_cleanup); 874 875 876 /* Module information */ 877 MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>"); 878 MODULE_DESCRIPTION("DA9063 regulators driver"); 879 MODULE_LICENSE("GPL"); 880 MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS); 881