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