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_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \ 104 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B 105 106 /* Macros for voltage DC/DC converters (BUCKs) */ 107 #define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \ 108 creg, cmask) \ 109 .desc.id = chip##_ID_##regl_name, \ 110 .desc.name = __stringify(chip##_##regl_name), \ 111 .desc.ops = &da9063_buck_ops, \ 112 .desc.min_uV = (min_mV) * 1000, \ 113 .desc.uV_step = (step_mV) * 1000, \ 114 .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \ 115 .desc.csel_reg = (creg), \ 116 .desc.csel_mask = (cmask), \ 117 .desc.curr_table = limits_array, \ 118 .desc.n_current_limits = ARRAY_SIZE(limits_array) 119 120 #define DA9063_BUCK_COMMON_FIELDS(regl_name) \ 121 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ 122 .desc.enable_mask = DA9063_BUCK_EN, \ 123 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ 124 .desc.vsel_mask = DA9063_VBUCK_MASK, \ 125 .desc.linear_min_sel = DA9063_VBUCK_BIAS, \ 126 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \ 127 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \ 128 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \ 129 .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK) 130 131 /* Defines asignment of regulators info table to chip model */ 132 struct da9063_dev_model { 133 const struct da9063_regulator_info *regulator_info; 134 unsigned int n_regulators; 135 enum da9063_type type; 136 }; 137 138 /* Single regulator settings */ 139 struct da9063_regulator { 140 struct regulator_desc desc; 141 struct regulator_dev *rdev; 142 struct da9063 *hw; 143 const struct da9063_regulator_info *info; 144 145 struct regmap_field *mode; 146 struct regmap_field *suspend; 147 struct regmap_field *sleep; 148 struct regmap_field *suspend_sleep; 149 }; 150 151 /* Encapsulates all information for the regulators driver */ 152 struct da9063_regulators { 153 unsigned int n_regulators; 154 /* Array size to be defined during init. Keep at end. */ 155 struct da9063_regulator regulator[]; 156 }; 157 158 /* BUCK modes for DA9063 */ 159 enum { 160 BUCK_MODE_MANUAL, /* 0 */ 161 BUCK_MODE_SLEEP, /* 1 */ 162 BUCK_MODE_SYNC, /* 2 */ 163 BUCK_MODE_AUTO /* 3 */ 164 }; 165 166 /* Regulator operations */ 167 168 /* 169 * Current limits array (in uA) for BCORE1, BCORE2, BPRO. 170 * Entry indexes corresponds to register values. 171 */ 172 static const unsigned int da9063_buck_a_limits[] = { 173 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, 174 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 175 }; 176 177 /* 178 * Current limits array (in uA) for BMEM, BIO, BPERI. 179 * Entry indexes corresponds to register values. 180 */ 181 static const unsigned int da9063_buck_b_limits[] = { 182 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, 183 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 184 }; 185 186 /* 187 * Current limits array (in uA) for merged BCORE1 and BCORE2. 188 * Entry indexes corresponds to register values. 189 */ 190 static const unsigned int da9063_bcores_merged_limits[] = { 191 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000, 192 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000 193 }; 194 195 /* 196 * Current limits array (in uA) for merged BMEM and BIO. 197 * Entry indexes corresponds to register values. 198 */ 199 static const unsigned int da9063_bmem_bio_merged_limits[] = { 200 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, 201 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000 202 }; 203 204 static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) 205 { 206 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 207 unsigned int val; 208 209 switch (mode) { 210 case REGULATOR_MODE_FAST: 211 val = BUCK_MODE_SYNC; 212 break; 213 case REGULATOR_MODE_NORMAL: 214 val = BUCK_MODE_AUTO; 215 break; 216 case REGULATOR_MODE_STANDBY: 217 val = BUCK_MODE_SLEEP; 218 break; 219 default: 220 return -EINVAL; 221 } 222 223 return regmap_field_write(regl->mode, val); 224 } 225 226 /* 227 * Bucks use single mode register field for normal operation 228 * and suspend state. 229 * There are 3 modes to map to: FAST, NORMAL, and STANDBY. 230 */ 231 232 static unsigned int da9063_buck_get_mode(struct regulator_dev *rdev) 233 { 234 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 235 struct regmap_field *field; 236 unsigned int val; 237 int ret; 238 239 ret = regmap_field_read(regl->mode, &val); 240 if (ret < 0) 241 return ret; 242 243 switch (val) { 244 default: 245 case BUCK_MODE_MANUAL: 246 /* Sleep flag bit decides the mode */ 247 break; 248 case BUCK_MODE_SLEEP: 249 return REGULATOR_MODE_STANDBY; 250 case BUCK_MODE_SYNC: 251 return REGULATOR_MODE_FAST; 252 case BUCK_MODE_AUTO: 253 return REGULATOR_MODE_NORMAL; 254 } 255 256 /* Detect current regulator state */ 257 ret = regmap_field_read(regl->suspend, &val); 258 if (ret < 0) 259 return 0; 260 261 /* Read regulator mode from proper register, depending on state */ 262 if (val) 263 field = regl->suspend_sleep; 264 else 265 field = regl->sleep; 266 267 ret = regmap_field_read(field, &val); 268 if (ret < 0) 269 return 0; 270 271 if (val) 272 return REGULATOR_MODE_STANDBY; 273 else 274 return REGULATOR_MODE_FAST; 275 } 276 277 /* 278 * LDOs use sleep flags - one for normal and one for suspend state. 279 * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state. 280 */ 281 282 static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode) 283 { 284 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 285 unsigned int val; 286 287 switch (mode) { 288 case REGULATOR_MODE_NORMAL: 289 val = 0; 290 break; 291 case REGULATOR_MODE_STANDBY: 292 val = 1; 293 break; 294 default: 295 return -EINVAL; 296 } 297 298 return regmap_field_write(regl->sleep, val); 299 } 300 301 static unsigned int da9063_ldo_get_mode(struct regulator_dev *rdev) 302 { 303 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 304 struct regmap_field *field; 305 int ret, val; 306 307 /* Detect current regulator state */ 308 ret = regmap_field_read(regl->suspend, &val); 309 if (ret < 0) 310 return 0; 311 312 /* Read regulator mode from proper register, depending on state */ 313 if (val) 314 field = regl->suspend_sleep; 315 else 316 field = regl->sleep; 317 318 ret = regmap_field_read(field, &val); 319 if (ret < 0) 320 return 0; 321 322 if (val) 323 return REGULATOR_MODE_STANDBY; 324 else 325 return REGULATOR_MODE_NORMAL; 326 } 327 328 static int da9063_buck_get_status(struct regulator_dev *rdev) 329 { 330 int ret = regulator_is_enabled_regmap(rdev); 331 332 if (ret == 0) { 333 ret = REGULATOR_STATUS_OFF; 334 } else if (ret > 0) { 335 ret = da9063_buck_get_mode(rdev); 336 if (ret > 0) 337 ret = regulator_mode_to_status(ret); 338 else if (ret == 0) 339 ret = -EIO; 340 } 341 342 return ret; 343 } 344 345 static int da9063_ldo_get_status(struct regulator_dev *rdev) 346 { 347 int ret = regulator_is_enabled_regmap(rdev); 348 349 if (ret == 0) { 350 ret = REGULATOR_STATUS_OFF; 351 } else if (ret > 0) { 352 ret = da9063_ldo_get_mode(rdev); 353 if (ret > 0) 354 ret = regulator_mode_to_status(ret); 355 else if (ret == 0) 356 ret = -EIO; 357 } 358 359 return ret; 360 } 361 362 static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV) 363 { 364 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 365 const struct da9063_regulator_info *rinfo = regl->info; 366 int ret, sel; 367 368 sel = regulator_map_voltage_linear(rdev, uV, uV); 369 if (sel < 0) 370 return sel; 371 372 sel <<= ffs(rdev->desc->vsel_mask) - 1; 373 374 ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg, 375 rdev->desc->vsel_mask, sel); 376 377 return ret; 378 } 379 380 static int da9063_suspend_enable(struct regulator_dev *rdev) 381 { 382 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 383 384 return regmap_field_write(regl->suspend, 1); 385 } 386 387 static int da9063_suspend_disable(struct regulator_dev *rdev) 388 { 389 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 390 391 return regmap_field_write(regl->suspend, 0); 392 } 393 394 static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, 395 unsigned int mode) 396 { 397 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 398 int val; 399 400 switch (mode) { 401 case REGULATOR_MODE_FAST: 402 val = BUCK_MODE_SYNC; 403 break; 404 case REGULATOR_MODE_NORMAL: 405 val = BUCK_MODE_AUTO; 406 break; 407 case REGULATOR_MODE_STANDBY: 408 val = BUCK_MODE_SLEEP; 409 break; 410 default: 411 return -EINVAL; 412 } 413 414 return regmap_field_write(regl->mode, val); 415 } 416 417 static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, 418 unsigned int mode) 419 { 420 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 421 unsigned int val; 422 423 switch (mode) { 424 case REGULATOR_MODE_NORMAL: 425 val = 0; 426 break; 427 case REGULATOR_MODE_STANDBY: 428 val = 1; 429 break; 430 default: 431 return -EINVAL; 432 } 433 434 return regmap_field_write(regl->suspend_sleep, val); 435 } 436 437 static const struct regulator_ops da9063_buck_ops = { 438 .enable = regulator_enable_regmap, 439 .disable = regulator_disable_regmap, 440 .is_enabled = regulator_is_enabled_regmap, 441 .get_voltage_sel = regulator_get_voltage_sel_regmap, 442 .set_voltage_sel = regulator_set_voltage_sel_regmap, 443 .list_voltage = regulator_list_voltage_linear, 444 .set_current_limit = regulator_set_current_limit_regmap, 445 .get_current_limit = regulator_get_current_limit_regmap, 446 .set_mode = da9063_buck_set_mode, 447 .get_mode = da9063_buck_get_mode, 448 .get_status = da9063_buck_get_status, 449 .set_suspend_voltage = da9063_set_suspend_voltage, 450 .set_suspend_enable = da9063_suspend_enable, 451 .set_suspend_disable = da9063_suspend_disable, 452 .set_suspend_mode = da9063_buck_set_suspend_mode, 453 }; 454 455 static const struct regulator_ops da9063_ldo_ops = { 456 .enable = regulator_enable_regmap, 457 .disable = regulator_disable_regmap, 458 .is_enabled = regulator_is_enabled_regmap, 459 .get_voltage_sel = regulator_get_voltage_sel_regmap, 460 .set_voltage_sel = regulator_set_voltage_sel_regmap, 461 .list_voltage = regulator_list_voltage_linear, 462 .set_mode = da9063_ldo_set_mode, 463 .get_mode = da9063_ldo_get_mode, 464 .get_status = da9063_ldo_get_status, 465 .set_suspend_voltage = da9063_set_suspend_voltage, 466 .set_suspend_enable = da9063_suspend_enable, 467 .set_suspend_disable = da9063_suspend_disable, 468 .set_suspend_mode = da9063_ldo_set_suspend_mode, 469 }; 470 471 /* Info of regulators for DA9063 */ 472 static const struct da9063_regulator_info da9063_regulator_info[] = { 473 { 474 DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570, 475 da9063_buck_a_limits, 476 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), 477 DA9063_BUCK_COMMON_FIELDS(BCORE1), 478 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), 479 }, 480 { 481 DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570, 482 da9063_buck_a_limits, 483 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK), 484 DA9063_BUCK_COMMON_FIELDS(BCORE2), 485 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL), 486 }, 487 { 488 DA9063_BUCK(DA9063, BPRO, 530, 10, 1800, 489 da9063_buck_a_limits, 490 DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK), 491 DA9063_BUCK_COMMON_FIELDS(BPRO), 492 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL), 493 }, 494 { 495 DA9063_BUCK(DA9063, BMEM, 800, 20, 3340, 496 da9063_buck_b_limits, 497 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), 498 DA9063_BUCK_COMMON_FIELDS(BMEM), 499 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), 500 }, 501 { 502 DA9063_BUCK(DA9063, BIO, 800, 20, 3340, 503 da9063_buck_b_limits, 504 DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK), 505 DA9063_BUCK_COMMON_FIELDS(BIO), 506 .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL), 507 }, 508 { 509 DA9063_BUCK(DA9063, BPERI, 800, 20, 3340, 510 da9063_buck_b_limits, 511 DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK), 512 DA9063_BUCK_COMMON_FIELDS(BPERI), 513 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL), 514 }, 515 { 516 DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570, 517 da9063_bcores_merged_limits, 518 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), 519 /* BCORES_MERGED uses the same register fields as BCORE1 */ 520 DA9063_BUCK_COMMON_FIELDS(BCORE1), 521 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), 522 }, 523 { 524 DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340, 525 da9063_bmem_bio_merged_limits, 526 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), 527 /* BMEM_BIO_MERGED uses the same register fields as BMEM */ 528 DA9063_BUCK_COMMON_FIELDS(BMEM), 529 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), 530 }, 531 { 532 DA9063_LDO(DA9063, LDO3, 900, 20, 3440), 533 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO3_SEL), 534 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM), 535 }, 536 { 537 DA9063_LDO(DA9063, LDO7, 900, 50, 3600), 538 .suspend = BFIELD(DA9063_REG_LDO7_CONT, DA9063_VLDO7_SEL), 539 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM), 540 }, 541 { 542 DA9063_LDO(DA9063, LDO8, 900, 50, 3600), 543 .suspend = BFIELD(DA9063_REG_LDO8_CONT, DA9063_VLDO8_SEL), 544 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM), 545 }, 546 { 547 DA9063_LDO(DA9063, LDO9, 950, 50, 3600), 548 .suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL), 549 }, 550 { 551 DA9063_LDO(DA9063, LDO11, 900, 50, 3600), 552 .suspend = BFIELD(DA9063_REG_LDO11_CONT, DA9063_VLDO11_SEL), 553 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM), 554 }, 555 556 /* The following LDOs are present only on DA9063, not on DA9063L */ 557 { 558 DA9063_LDO(DA9063, LDO1, 600, 20, 1860), 559 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO1_SEL), 560 }, 561 { 562 DA9063_LDO(DA9063, LDO2, 600, 20, 1860), 563 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO2_SEL), 564 }, 565 { 566 DA9063_LDO(DA9063, LDO4, 900, 20, 3440), 567 .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VLDO4_SEL), 568 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM), 569 }, 570 { 571 DA9063_LDO(DA9063, LDO5, 900, 50, 3600), 572 .suspend = BFIELD(DA9063_REG_LDO5_CONT, DA9063_VLDO5_SEL), 573 }, 574 { 575 DA9063_LDO(DA9063, LDO6, 900, 50, 3600), 576 .suspend = BFIELD(DA9063_REG_LDO6_CONT, DA9063_VLDO6_SEL), 577 }, 578 579 { 580 DA9063_LDO(DA9063, LDO10, 900, 50, 3600), 581 .suspend = BFIELD(DA9063_REG_LDO10_CONT, DA9063_VLDO10_SEL), 582 }, 583 }; 584 585 /* Link chip model with regulators info table */ 586 static struct da9063_dev_model regulators_models[] = { 587 { 588 .regulator_info = da9063_regulator_info, 589 .n_regulators = ARRAY_SIZE(da9063_regulator_info), 590 .type = PMIC_TYPE_DA9063, 591 }, 592 { 593 .regulator_info = da9063_regulator_info, 594 .n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6, 595 .type = PMIC_TYPE_DA9063L, 596 }, 597 { } 598 }; 599 600 /* Regulator interrupt handlers */ 601 static irqreturn_t da9063_ldo_lim_event(int irq, void *data) 602 { 603 struct da9063_regulators *regulators = data; 604 struct da9063 *hw = regulators->regulator[0].hw; 605 struct da9063_regulator *regl; 606 int bits, i, ret; 607 608 ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits); 609 if (ret < 0) 610 return IRQ_NONE; 611 612 for (i = regulators->n_regulators - 1; i >= 0; i--) { 613 regl = ®ulators->regulator[i]; 614 if (regl->info->oc_event.reg != DA9063_REG_STATUS_D) 615 continue; 616 617 if (BIT(regl->info->oc_event.lsb) & bits) { 618 regulator_lock(regl->rdev); 619 regulator_notifier_call_chain(regl->rdev, 620 REGULATOR_EVENT_OVER_CURRENT, NULL); 621 regulator_unlock(regl->rdev); 622 } 623 } 624 625 return IRQ_HANDLED; 626 } 627 628 /* 629 * Probing and Initialisation functions 630 */ 631 static const struct regulator_init_data *da9063_get_regulator_initdata( 632 const struct da9063_regulators_pdata *regl_pdata, int id) 633 { 634 int i; 635 636 for (i = 0; i < regl_pdata->n_regulators; i++) { 637 if (id == regl_pdata->regulator_data[i].id) 638 return regl_pdata->regulator_data[i].initdata; 639 } 640 641 return NULL; 642 } 643 644 static struct of_regulator_match da9063_matches[] = { 645 [DA9063_ID_BCORE1] = { .name = "bcore1" }, 646 [DA9063_ID_BCORE2] = { .name = "bcore2" }, 647 [DA9063_ID_BPRO] = { .name = "bpro", }, 648 [DA9063_ID_BMEM] = { .name = "bmem", }, 649 [DA9063_ID_BIO] = { .name = "bio", }, 650 [DA9063_ID_BPERI] = { .name = "bperi", }, 651 [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, 652 [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, 653 [DA9063_ID_LDO3] = { .name = "ldo3", }, 654 [DA9063_ID_LDO7] = { .name = "ldo7", }, 655 [DA9063_ID_LDO8] = { .name = "ldo8", }, 656 [DA9063_ID_LDO9] = { .name = "ldo9", }, 657 [DA9063_ID_LDO11] = { .name = "ldo11", }, 658 /* The following LDOs are present only on DA9063, not on DA9063L */ 659 [DA9063_ID_LDO1] = { .name = "ldo1", }, 660 [DA9063_ID_LDO2] = { .name = "ldo2", }, 661 [DA9063_ID_LDO4] = { .name = "ldo4", }, 662 [DA9063_ID_LDO5] = { .name = "ldo5", }, 663 [DA9063_ID_LDO6] = { .name = "ldo6", }, 664 [DA9063_ID_LDO10] = { .name = "ldo10", }, 665 }; 666 667 static struct da9063_regulators_pdata *da9063_parse_regulators_dt( 668 struct platform_device *pdev, 669 struct of_regulator_match **da9063_reg_matches) 670 { 671 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 672 struct da9063_regulators_pdata *pdata; 673 struct da9063_regulator_data *rdata; 674 struct device_node *node; 675 int da9063_matches_len = ARRAY_SIZE(da9063_matches); 676 int i, n, num; 677 678 if (da9063->type == PMIC_TYPE_DA9063L) 679 da9063_matches_len -= 6; 680 681 node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); 682 if (!node) { 683 dev_err(&pdev->dev, "Regulators device node not found\n"); 684 return ERR_PTR(-ENODEV); 685 } 686 687 num = of_regulator_match(&pdev->dev, node, da9063_matches, 688 da9063_matches_len); 689 of_node_put(node); 690 if (num < 0) { 691 dev_err(&pdev->dev, "Failed to match regulators\n"); 692 return ERR_PTR(-EINVAL); 693 } 694 695 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); 696 if (!pdata) 697 return ERR_PTR(-ENOMEM); 698 699 pdata->regulator_data = devm_kcalloc(&pdev->dev, 700 num, sizeof(*pdata->regulator_data), 701 GFP_KERNEL); 702 if (!pdata->regulator_data) 703 return ERR_PTR(-ENOMEM); 704 pdata->n_regulators = num; 705 706 n = 0; 707 for (i = 0; i < da9063_matches_len; i++) { 708 if (!da9063_matches[i].init_data) 709 continue; 710 711 rdata = &pdata->regulator_data[n]; 712 rdata->id = i; 713 rdata->initdata = da9063_matches[i].init_data; 714 715 n++; 716 } 717 718 *da9063_reg_matches = da9063_matches; 719 return pdata; 720 } 721 722 static int da9063_regulator_probe(struct platform_device *pdev) 723 { 724 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 725 struct of_regulator_match *da9063_reg_matches = NULL; 726 struct da9063_regulators_pdata *regl_pdata; 727 const struct da9063_dev_model *model; 728 struct da9063_regulators *regulators; 729 struct da9063_regulator *regl; 730 struct regulator_config config; 731 bool bcores_merged, bmem_bio_merged; 732 int id, irq, n, n_regulators, ret, val; 733 734 regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches); 735 736 if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) { 737 dev_err(&pdev->dev, 738 "No regulators defined for the platform\n"); 739 return -ENODEV; 740 } 741 742 /* Find regulators set for particular device model */ 743 for (model = regulators_models; model->regulator_info; model++) { 744 if (model->type == da9063->type) 745 break; 746 } 747 if (!model->regulator_info) { 748 dev_err(&pdev->dev, "Chip model not recognised (%u)\n", 749 da9063->type); 750 return -ENODEV; 751 } 752 753 ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val); 754 if (ret < 0) { 755 dev_err(&pdev->dev, 756 "Error while reading BUCKs configuration\n"); 757 return ret; 758 } 759 bcores_merged = val & DA9063_BCORE_MERGE; 760 bmem_bio_merged = val & DA9063_BUCK_MERGE; 761 762 n_regulators = model->n_regulators; 763 if (bcores_merged) 764 n_regulators -= 2; /* remove BCORE1, BCORE2 */ 765 else 766 n_regulators--; /* remove BCORES_MERGED */ 767 if (bmem_bio_merged) 768 n_regulators -= 2; /* remove BMEM, BIO */ 769 else 770 n_regulators--; /* remove BMEM_BIO_MERGED */ 771 772 /* Allocate memory required by usable regulators */ 773 regulators = devm_kzalloc(&pdev->dev, struct_size(regulators, 774 regulator, n_regulators), GFP_KERNEL); 775 if (!regulators) 776 return -ENOMEM; 777 778 regulators->n_regulators = n_regulators; 779 platform_set_drvdata(pdev, regulators); 780 781 /* Register all regulators declared in platform information */ 782 n = 0; 783 id = 0; 784 while (n < regulators->n_regulators) { 785 /* Skip regulator IDs depending on merge mode configuration */ 786 switch (id) { 787 case DA9063_ID_BCORE1: 788 case DA9063_ID_BCORE2: 789 if (bcores_merged) { 790 id++; 791 continue; 792 } 793 break; 794 case DA9063_ID_BMEM: 795 case DA9063_ID_BIO: 796 if (bmem_bio_merged) { 797 id++; 798 continue; 799 } 800 break; 801 case DA9063_ID_BCORES_MERGED: 802 if (!bcores_merged) { 803 id++; 804 continue; 805 } 806 break; 807 case DA9063_ID_BMEM_BIO_MERGED: 808 if (!bmem_bio_merged) { 809 id++; 810 continue; 811 } 812 break; 813 } 814 815 /* Initialise regulator structure */ 816 regl = ®ulators->regulator[n]; 817 regl->hw = da9063; 818 regl->info = &model->regulator_info[id]; 819 regl->desc = regl->info->desc; 820 regl->desc.type = REGULATOR_VOLTAGE; 821 regl->desc.owner = THIS_MODULE; 822 823 if (regl->info->mode.reg) { 824 regl->mode = devm_regmap_field_alloc(&pdev->dev, 825 da9063->regmap, regl->info->mode); 826 if (IS_ERR(regl->mode)) 827 return PTR_ERR(regl->mode); 828 } 829 830 if (regl->info->suspend.reg) { 831 regl->suspend = devm_regmap_field_alloc(&pdev->dev, 832 da9063->regmap, regl->info->suspend); 833 if (IS_ERR(regl->suspend)) 834 return PTR_ERR(regl->suspend); 835 } 836 837 if (regl->info->sleep.reg) { 838 regl->sleep = devm_regmap_field_alloc(&pdev->dev, 839 da9063->regmap, regl->info->sleep); 840 if (IS_ERR(regl->sleep)) 841 return PTR_ERR(regl->sleep); 842 } 843 844 if (regl->info->suspend_sleep.reg) { 845 regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev, 846 da9063->regmap, regl->info->suspend_sleep); 847 if (IS_ERR(regl->suspend_sleep)) 848 return PTR_ERR(regl->suspend_sleep); 849 } 850 851 /* Register regulator */ 852 memset(&config, 0, sizeof(config)); 853 config.dev = &pdev->dev; 854 config.init_data = da9063_get_regulator_initdata(regl_pdata, id); 855 config.driver_data = regl; 856 if (da9063_reg_matches) 857 config.of_node = da9063_reg_matches[id].of_node; 858 config.regmap = da9063->regmap; 859 regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, 860 &config); 861 if (IS_ERR(regl->rdev)) { 862 dev_err(&pdev->dev, 863 "Failed to register %s regulator\n", 864 regl->desc.name); 865 return PTR_ERR(regl->rdev); 866 } 867 id++; 868 n++; 869 } 870 871 /* LDOs overcurrent event support */ 872 irq = platform_get_irq_byname(pdev, "LDO_LIM"); 873 if (irq < 0) 874 return irq; 875 876 ret = devm_request_threaded_irq(&pdev->dev, irq, 877 NULL, da9063_ldo_lim_event, 878 IRQF_TRIGGER_LOW | IRQF_ONESHOT, 879 "LDO_LIM", regulators); 880 if (ret) 881 dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n"); 882 883 return ret; 884 } 885 886 static struct platform_driver da9063_regulator_driver = { 887 .driver = { 888 .name = DA9063_DRVNAME_REGULATORS, 889 }, 890 .probe = da9063_regulator_probe, 891 }; 892 893 static int __init da9063_regulator_init(void) 894 { 895 return platform_driver_register(&da9063_regulator_driver); 896 } 897 subsys_initcall(da9063_regulator_init); 898 899 static void __exit da9063_regulator_cleanup(void) 900 { 901 platform_driver_unregister(&da9063_regulator_driver); 902 } 903 module_exit(da9063_regulator_cleanup); 904 905 906 /* Module information */ 907 MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>"); 908 MODULE_DESCRIPTION("DA9063 regulators driver"); 909 MODULE_LICENSE("GPL"); 910 MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS); 911