1 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 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the 12 * Free Software Foundation; either version 2 of the License, or (at your 13 * option) any later version. 14 * 15 */ 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/err.h> 20 #include <linux/slab.h> 21 #include <linux/of.h> 22 #include <linux/platform_device.h> 23 #include <linux/regmap.h> 24 #include <linux/regulator/driver.h> 25 #include <linux/regulator/machine.h> 26 #include <linux/regulator/of_regulator.h> 27 #include <linux/mfd/da9063/core.h> 28 #include <linux/mfd/da9063/pdata.h> 29 #include <linux/mfd/da9063/registers.h> 30 31 32 /* Definition for registering regmap bit fields using a mask */ 33 #define BFIELD(_reg, _mask) \ 34 REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \ 35 sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1) 36 37 /* Regulator capabilities and registers description */ 38 struct da9063_regulator_info { 39 struct regulator_desc desc; 40 41 /* Current limiting */ 42 unsigned n_current_limits; 43 const int *current_limits; 44 45 /* DA9063 main register fields */ 46 struct reg_field mode; /* buck mode of operation */ 47 struct reg_field suspend; 48 struct reg_field sleep; 49 struct reg_field suspend_sleep; 50 unsigned int suspend_vsel_reg; 51 struct reg_field ilimit; 52 53 /* DA9063 event detection bit */ 54 struct reg_field oc_event; 55 }; 56 57 /* Macros for LDO */ 58 #define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \ 59 .desc.id = chip##_ID_##regl_name, \ 60 .desc.name = __stringify(chip##_##regl_name), \ 61 .desc.ops = &da9063_ldo_ops, \ 62 .desc.min_uV = (min_mV) * 1000, \ 63 .desc.uV_step = (step_mV) * 1000, \ 64 .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \ 65 + (DA9063_V##regl_name##_BIAS)), \ 66 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ 67 .desc.enable_mask = DA9063_LDO_EN, \ 68 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ 69 .desc.vsel_mask = DA9063_V##regl_name##_MASK, \ 70 .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \ 71 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \ 72 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \ 73 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B 74 75 /* Macros for voltage DC/DC converters (BUCKs) */ 76 #define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array) \ 77 .desc.id = chip##_ID_##regl_name, \ 78 .desc.name = __stringify(chip##_##regl_name), \ 79 .desc.ops = &da9063_buck_ops, \ 80 .desc.min_uV = (min_mV) * 1000, \ 81 .desc.uV_step = (step_mV) * 1000, \ 82 .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \ 83 .current_limits = limits_array, \ 84 .n_current_limits = ARRAY_SIZE(limits_array) 85 86 #define DA9063_BUCK_COMMON_FIELDS(regl_name) \ 87 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ 88 .desc.enable_mask = DA9063_BUCK_EN, \ 89 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ 90 .desc.vsel_mask = DA9063_VBUCK_MASK, \ 91 .desc.linear_min_sel = DA9063_VBUCK_BIAS, \ 92 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \ 93 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \ 94 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \ 95 .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK) 96 97 /* Defines asignment of regulators info table to chip model */ 98 struct da9063_dev_model { 99 const struct da9063_regulator_info *regulator_info; 100 unsigned n_regulators; 101 unsigned dev_model; 102 }; 103 104 /* Single regulator settings */ 105 struct da9063_regulator { 106 struct regulator_desc desc; 107 struct regulator_dev *rdev; 108 struct da9063 *hw; 109 const struct da9063_regulator_info *info; 110 111 struct regmap_field *mode; 112 struct regmap_field *suspend; 113 struct regmap_field *sleep; 114 struct regmap_field *suspend_sleep; 115 struct regmap_field *ilimit; 116 }; 117 118 /* Encapsulates all information for the regulators driver */ 119 struct da9063_regulators { 120 int irq_ldo_lim; 121 int irq_uvov; 122 123 unsigned n_regulators; 124 /* Array size to be defined during init. Keep at end. */ 125 struct da9063_regulator regulator[0]; 126 }; 127 128 /* BUCK modes for DA9063 */ 129 enum { 130 BUCK_MODE_MANUAL, /* 0 */ 131 BUCK_MODE_SLEEP, /* 1 */ 132 BUCK_MODE_SYNC, /* 2 */ 133 BUCK_MODE_AUTO /* 3 */ 134 }; 135 136 /* Regulator operations */ 137 138 /* Current limits array (in uA) for BCORE1, BCORE2, BPRO. 139 Entry indexes corresponds to register values. */ 140 static const int da9063_buck_a_limits[] = { 141 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, 142 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 143 }; 144 145 /* Current limits array (in uA) for BMEM, BIO, BPERI. 146 Entry indexes corresponds to register values. */ 147 static const int da9063_buck_b_limits[] = { 148 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, 149 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 150 }; 151 152 /* Current limits array (in uA) for merged BCORE1 and BCORE2. 153 Entry indexes corresponds to register values. */ 154 static const int da9063_bcores_merged_limits[] = { 155 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000, 156 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000 157 }; 158 159 /* Current limits array (in uA) for merged BMEM and BIO. 160 Entry indexes corresponds to register values. */ 161 static const int da9063_bmem_bio_merged_limits[] = { 162 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, 163 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000 164 }; 165 166 static int da9063_set_current_limit(struct regulator_dev *rdev, 167 int min_uA, int max_uA) 168 { 169 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 170 const struct da9063_regulator_info *rinfo = regl->info; 171 int n, tval; 172 173 for (n = 0; n < rinfo->n_current_limits; n++) { 174 tval = rinfo->current_limits[n]; 175 if (tval >= min_uA && tval <= max_uA) 176 return regmap_field_write(regl->ilimit, n); 177 } 178 179 return -EINVAL; 180 } 181 182 static int da9063_get_current_limit(struct regulator_dev *rdev) 183 { 184 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 185 const struct da9063_regulator_info *rinfo = regl->info; 186 unsigned int sel; 187 int ret; 188 189 ret = regmap_field_read(regl->ilimit, &sel); 190 if (ret < 0) 191 return ret; 192 193 if (sel >= rinfo->n_current_limits) 194 sel = rinfo->n_current_limits - 1; 195 196 return rinfo->current_limits[sel]; 197 } 198 199 static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned mode) 200 { 201 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 202 unsigned val; 203 204 switch (mode) { 205 case REGULATOR_MODE_FAST: 206 val = BUCK_MODE_SYNC; 207 break; 208 case REGULATOR_MODE_NORMAL: 209 val = BUCK_MODE_AUTO; 210 break; 211 case REGULATOR_MODE_STANDBY: 212 val = BUCK_MODE_SLEEP; 213 break; 214 default: 215 return -EINVAL; 216 } 217 218 return regmap_field_write(regl->mode, val); 219 } 220 221 /* 222 * Bucks use single mode register field for normal operation 223 * and suspend state. 224 * There are 3 modes to map to: FAST, NORMAL, and STANDBY. 225 */ 226 227 static unsigned da9063_buck_get_mode(struct regulator_dev *rdev) 228 { 229 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 230 struct regmap_field *field; 231 unsigned int val, mode = 0; 232 int ret; 233 234 ret = regmap_field_read(regl->mode, &val); 235 if (ret < 0) 236 return ret; 237 238 switch (val) { 239 default: 240 case BUCK_MODE_MANUAL: 241 mode = REGULATOR_MODE_FAST | REGULATOR_MODE_STANDBY; 242 /* Sleep flag bit decides the mode */ 243 break; 244 case BUCK_MODE_SLEEP: 245 return REGULATOR_MODE_STANDBY; 246 case BUCK_MODE_SYNC: 247 return REGULATOR_MODE_FAST; 248 case BUCK_MODE_AUTO: 249 return REGULATOR_MODE_NORMAL; 250 } 251 252 /* Detect current regulator state */ 253 ret = regmap_field_read(regl->suspend, &val); 254 if (ret < 0) 255 return 0; 256 257 /* Read regulator mode from proper register, depending on state */ 258 if (val) 259 field = regl->suspend_sleep; 260 else 261 field = regl->sleep; 262 263 ret = regmap_field_read(field, &val); 264 if (ret < 0) 265 return 0; 266 267 if (val) 268 mode &= REGULATOR_MODE_STANDBY; 269 else 270 mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST; 271 272 return mode; 273 } 274 275 /* 276 * LDOs use sleep flags - one for normal and one for suspend state. 277 * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state. 278 */ 279 280 static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned mode) 281 { 282 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 283 unsigned val; 284 285 switch (mode) { 286 case REGULATOR_MODE_NORMAL: 287 val = 0; 288 break; 289 case REGULATOR_MODE_STANDBY: 290 val = 1; 291 break; 292 default: 293 return -EINVAL; 294 } 295 296 return regmap_field_write(regl->sleep, val); 297 } 298 299 static unsigned da9063_ldo_get_mode(struct regulator_dev *rdev) 300 { 301 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 302 struct regmap_field *field; 303 int ret, val; 304 305 /* Detect current regulator state */ 306 ret = regmap_field_read(regl->suspend, &val); 307 if (ret < 0) 308 return 0; 309 310 /* Read regulator mode from proper register, depending on state */ 311 if (val) 312 field = regl->suspend_sleep; 313 else 314 field = regl->sleep; 315 316 ret = regmap_field_read(field, &val); 317 if (ret < 0) 318 return 0; 319 320 if (val) 321 return REGULATOR_MODE_STANDBY; 322 else 323 return REGULATOR_MODE_NORMAL; 324 } 325 326 static int da9063_buck_get_status(struct regulator_dev *rdev) 327 { 328 int ret = regulator_is_enabled_regmap(rdev); 329 330 if (ret == 0) { 331 ret = REGULATOR_STATUS_OFF; 332 } else if (ret > 0) { 333 ret = da9063_buck_get_mode(rdev); 334 if (ret > 0) 335 ret = regulator_mode_to_status(ret); 336 else if (ret == 0) 337 ret = -EIO; 338 } 339 340 return ret; 341 } 342 343 static int da9063_ldo_get_status(struct regulator_dev *rdev) 344 { 345 int ret = regulator_is_enabled_regmap(rdev); 346 347 if (ret == 0) { 348 ret = REGULATOR_STATUS_OFF; 349 } else if (ret > 0) { 350 ret = da9063_ldo_get_mode(rdev); 351 if (ret > 0) 352 ret = regulator_mode_to_status(ret); 353 else if (ret == 0) 354 ret = -EIO; 355 } 356 357 return ret; 358 } 359 360 static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV) 361 { 362 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 363 const struct da9063_regulator_info *rinfo = regl->info; 364 int ret, sel; 365 366 sel = regulator_map_voltage_linear(rdev, uV, uV); 367 if (sel < 0) 368 return sel; 369 370 sel <<= ffs(rdev->desc->vsel_mask) - 1; 371 372 ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg, 373 rdev->desc->vsel_mask, sel); 374 375 return ret; 376 } 377 378 static int da9063_suspend_enable(struct regulator_dev *rdev) 379 { 380 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 381 382 return regmap_field_write(regl->suspend, 1); 383 } 384 385 static int da9063_suspend_disable(struct regulator_dev *rdev) 386 { 387 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 388 389 return regmap_field_write(regl->suspend, 0); 390 } 391 392 static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) 393 { 394 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 395 int val; 396 397 switch (mode) { 398 case REGULATOR_MODE_FAST: 399 val = BUCK_MODE_SYNC; 400 break; 401 case REGULATOR_MODE_NORMAL: 402 val = BUCK_MODE_AUTO; 403 break; 404 case REGULATOR_MODE_STANDBY: 405 val = BUCK_MODE_SLEEP; 406 break; 407 default: 408 return -EINVAL; 409 } 410 411 return regmap_field_write(regl->mode, val); 412 } 413 414 static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) 415 { 416 struct da9063_regulator *regl = rdev_get_drvdata(rdev); 417 unsigned val; 418 419 switch (mode) { 420 case REGULATOR_MODE_NORMAL: 421 val = 0; 422 break; 423 case REGULATOR_MODE_STANDBY: 424 val = 1; 425 break; 426 default: 427 return -EINVAL; 428 } 429 430 return regmap_field_write(regl->suspend_sleep, val); 431 } 432 433 static struct regulator_ops da9063_buck_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_current_limit = da9063_set_current_limit, 441 .get_current_limit = da9063_get_current_limit, 442 .set_mode = da9063_buck_set_mode, 443 .get_mode = da9063_buck_get_mode, 444 .get_status = da9063_buck_get_status, 445 .set_suspend_voltage = da9063_set_suspend_voltage, 446 .set_suspend_enable = da9063_suspend_enable, 447 .set_suspend_disable = da9063_suspend_disable, 448 .set_suspend_mode = da9063_buck_set_suspend_mode, 449 }; 450 451 static struct regulator_ops da9063_ldo_ops = { 452 .enable = regulator_enable_regmap, 453 .disable = regulator_disable_regmap, 454 .is_enabled = regulator_is_enabled_regmap, 455 .get_voltage_sel = regulator_get_voltage_sel_regmap, 456 .set_voltage_sel = regulator_set_voltage_sel_regmap, 457 .list_voltage = regulator_list_voltage_linear, 458 .set_mode = da9063_ldo_set_mode, 459 .get_mode = da9063_ldo_get_mode, 460 .get_status = da9063_ldo_get_status, 461 .set_suspend_voltage = da9063_set_suspend_voltage, 462 .set_suspend_enable = da9063_suspend_enable, 463 .set_suspend_disable = da9063_suspend_disable, 464 .set_suspend_mode = da9063_ldo_set_suspend_mode, 465 }; 466 467 /* Info of regulators for DA9063 */ 468 static const struct da9063_regulator_info da9063_regulator_info[] = { 469 { 470 DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570, 471 da9063_buck_a_limits), 472 DA9063_BUCK_COMMON_FIELDS(BCORE1), 473 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), 474 .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, 475 DA9063_BCORE1_ILIM_MASK), 476 }, 477 { 478 DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570, 479 da9063_buck_a_limits), 480 DA9063_BUCK_COMMON_FIELDS(BCORE2), 481 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL), 482 .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, 483 DA9063_BCORE2_ILIM_MASK), 484 }, 485 { 486 DA9063_BUCK(DA9063, BPRO, 530, 10, 1800, 487 da9063_buck_a_limits), 488 DA9063_BUCK_COMMON_FIELDS(BPRO), 489 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL), 490 .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B, 491 DA9063_BPRO_ILIM_MASK), 492 }, 493 { 494 DA9063_BUCK(DA9063, BMEM, 800, 20, 3340, 495 da9063_buck_b_limits), 496 DA9063_BUCK_COMMON_FIELDS(BMEM), 497 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), 498 .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, 499 DA9063_BMEM_ILIM_MASK), 500 }, 501 { 502 DA9063_BUCK(DA9063, BIO, 800, 20, 3340, 503 da9063_buck_b_limits), 504 DA9063_BUCK_COMMON_FIELDS(BIO), 505 .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL), 506 .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, 507 DA9063_BIO_ILIM_MASK), 508 }, 509 { 510 DA9063_BUCK(DA9063, BPERI, 800, 20, 3340, 511 da9063_buck_b_limits), 512 DA9063_BUCK_COMMON_FIELDS(BPERI), 513 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL), 514 .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B, 515 DA9063_BPERI_ILIM_MASK), 516 }, 517 { 518 DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570, 519 da9063_bcores_merged_limits), 520 /* BCORES_MERGED uses the same register fields as BCORE1 */ 521 DA9063_BUCK_COMMON_FIELDS(BCORE1), 522 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), 523 .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, 524 DA9063_BCORE1_ILIM_MASK), 525 }, 526 { 527 DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340, 528 da9063_bmem_bio_merged_limits), 529 /* BMEM_BIO_MERGED uses the same register fields as BMEM */ 530 DA9063_BUCK_COMMON_FIELDS(BMEM), 531 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), 532 .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, 533 DA9063_BMEM_ILIM_MASK), 534 }, 535 { 536 DA9063_LDO(DA9063, LDO1, 600, 20, 1860), 537 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO1_SEL), 538 }, 539 { 540 DA9063_LDO(DA9063, LDO2, 600, 20, 1860), 541 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO2_SEL), 542 }, 543 { 544 DA9063_LDO(DA9063, LDO3, 900, 20, 3440), 545 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO3_SEL), 546 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM), 547 }, 548 { 549 DA9063_LDO(DA9063, LDO4, 900, 20, 3440), 550 .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VLDO4_SEL), 551 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM), 552 }, 553 { 554 DA9063_LDO(DA9063, LDO5, 900, 50, 3600), 555 .suspend = BFIELD(DA9063_REG_LDO5_CONT, DA9063_VLDO5_SEL), 556 }, 557 { 558 DA9063_LDO(DA9063, LDO6, 900, 50, 3600), 559 .suspend = BFIELD(DA9063_REG_LDO6_CONT, DA9063_VLDO6_SEL), 560 }, 561 { 562 DA9063_LDO(DA9063, LDO7, 900, 50, 3600), 563 .suspend = BFIELD(DA9063_REG_LDO7_CONT, DA9063_VLDO7_SEL), 564 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM), 565 }, 566 { 567 DA9063_LDO(DA9063, LDO8, 900, 50, 3600), 568 .suspend = BFIELD(DA9063_REG_LDO8_CONT, DA9063_VLDO8_SEL), 569 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM), 570 }, 571 { 572 DA9063_LDO(DA9063, LDO9, 950, 50, 3600), 573 .suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL), 574 }, 575 { 576 DA9063_LDO(DA9063, LDO10, 900, 50, 3600), 577 .suspend = BFIELD(DA9063_REG_LDO10_CONT, DA9063_VLDO10_SEL), 578 }, 579 { 580 DA9063_LDO(DA9063, LDO11, 900, 50, 3600), 581 .suspend = BFIELD(DA9063_REG_LDO11_CONT, DA9063_VLDO11_SEL), 582 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM), 583 }, 584 }; 585 586 /* Link chip model with regulators info table */ 587 static struct da9063_dev_model regulators_models[] = { 588 { 589 .regulator_info = da9063_regulator_info, 590 .n_regulators = ARRAY_SIZE(da9063_regulator_info), 591 .dev_model = PMIC_DA9063, 592 }, 593 { } 594 }; 595 596 /* Regulator interrupt handlers */ 597 static irqreturn_t da9063_ldo_lim_event(int irq, void *data) 598 { 599 struct da9063_regulators *regulators = data; 600 struct da9063 *hw = regulators->regulator[0].hw; 601 struct da9063_regulator *regl; 602 int bits, i , ret; 603 604 ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits); 605 if (ret < 0) 606 return IRQ_NONE; 607 608 for (i = regulators->n_regulators - 1; i >= 0; i--) { 609 regl = ®ulators->regulator[i]; 610 if (regl->info->oc_event.reg != DA9063_REG_STATUS_D) 611 continue; 612 613 if (BIT(regl->info->oc_event.lsb) & bits) 614 regulator_notifier_call_chain(regl->rdev, 615 REGULATOR_EVENT_OVER_CURRENT, NULL); 616 } 617 618 return IRQ_HANDLED; 619 } 620 621 /* 622 * Probing and Initialisation functions 623 */ 624 static const struct regulator_init_data *da9063_get_regulator_initdata( 625 const struct da9063_regulators_pdata *regl_pdata, int id) 626 { 627 int i; 628 629 for (i = 0; i < regl_pdata->n_regulators; i++) { 630 if (id == regl_pdata->regulator_data[i].id) 631 return regl_pdata->regulator_data[i].initdata; 632 } 633 634 return NULL; 635 } 636 637 #ifdef CONFIG_OF 638 static struct of_regulator_match da9063_matches[] = { 639 [DA9063_ID_BCORE1] = { .name = "bcore1" }, 640 [DA9063_ID_BCORE2] = { .name = "bcore2" }, 641 [DA9063_ID_BPRO] = { .name = "bpro", }, 642 [DA9063_ID_BMEM] = { .name = "bmem", }, 643 [DA9063_ID_BIO] = { .name = "bio", }, 644 [DA9063_ID_BPERI] = { .name = "bperi", }, 645 [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, 646 [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, 647 [DA9063_ID_LDO1] = { .name = "ldo1", }, 648 [DA9063_ID_LDO2] = { .name = "ldo2", }, 649 [DA9063_ID_LDO3] = { .name = "ldo3", }, 650 [DA9063_ID_LDO4] = { .name = "ldo4", }, 651 [DA9063_ID_LDO5] = { .name = "ldo5", }, 652 [DA9063_ID_LDO6] = { .name = "ldo6", }, 653 [DA9063_ID_LDO7] = { .name = "ldo7", }, 654 [DA9063_ID_LDO8] = { .name = "ldo8", }, 655 [DA9063_ID_LDO9] = { .name = "ldo9", }, 656 [DA9063_ID_LDO10] = { .name = "ldo10", }, 657 [DA9063_ID_LDO11] = { .name = "ldo11", }, 658 }; 659 660 static struct da9063_regulators_pdata *da9063_parse_regulators_dt( 661 struct platform_device *pdev, 662 struct of_regulator_match **da9063_reg_matches) 663 { 664 struct da9063_regulators_pdata *pdata; 665 struct da9063_regulator_data *rdata; 666 struct device_node *node; 667 int i, n, num; 668 669 node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); 670 if (!node) { 671 dev_err(&pdev->dev, "Regulators device node not found\n"); 672 return ERR_PTR(-ENODEV); 673 } 674 675 num = of_regulator_match(&pdev->dev, node, da9063_matches, 676 ARRAY_SIZE(da9063_matches)); 677 of_node_put(node); 678 if (num < 0) { 679 dev_err(&pdev->dev, "Failed to match regulators\n"); 680 return ERR_PTR(-EINVAL); 681 } 682 683 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); 684 if (!pdata) 685 return ERR_PTR(-ENOMEM); 686 687 pdata->regulator_data = devm_kzalloc(&pdev->dev, 688 num * sizeof(*pdata->regulator_data), 689 GFP_KERNEL); 690 if (!pdata->regulator_data) 691 return ERR_PTR(-ENOMEM); 692 pdata->n_regulators = num; 693 694 n = 0; 695 for (i = 0; i < ARRAY_SIZE(da9063_matches); i++) { 696 if (!da9063_matches[i].init_data) 697 continue; 698 699 rdata = &pdata->regulator_data[n]; 700 rdata->id = i; 701 rdata->initdata = da9063_matches[i].init_data; 702 703 n++; 704 }; 705 706 *da9063_reg_matches = da9063_matches; 707 return pdata; 708 } 709 #else 710 static struct da9063_regulators_pdata *da9063_parse_regulators_dt( 711 struct platform_device *pdev, 712 struct of_regulator_match **da9063_reg_matches) 713 { 714 *da9063_reg_matches = NULL; 715 return ERR_PTR(-ENODEV); 716 } 717 #endif 718 719 static int da9063_regulator_probe(struct platform_device *pdev) 720 { 721 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); 722 struct da9063_pdata *da9063_pdata = dev_get_platdata(da9063->dev); 723 struct of_regulator_match *da9063_reg_matches = NULL; 724 struct da9063_regulators_pdata *regl_pdata; 725 const struct da9063_dev_model *model; 726 struct da9063_regulators *regulators; 727 struct da9063_regulator *regl; 728 struct regulator_config config; 729 bool bcores_merged, bmem_bio_merged; 730 int id, irq, n, n_regulators, ret, val; 731 size_t size; 732 733 regl_pdata = da9063_pdata ? da9063_pdata->regulators_pdata : NULL; 734 735 if (!regl_pdata) 736 regl_pdata = da9063_parse_regulators_dt(pdev, 737 &da9063_reg_matches); 738 739 if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) { 740 dev_err(&pdev->dev, 741 "No regulators defined for the platform\n"); 742 return PTR_ERR(regl_pdata); 743 } 744 745 /* Find regulators set for particular device model */ 746 for (model = regulators_models; model->regulator_info; model++) { 747 if (model->dev_model == da9063->model) 748 break; 749 } 750 if (!model->regulator_info) { 751 dev_err(&pdev->dev, "Chip model not recognised (%u)\n", 752 da9063->model); 753 return -ENODEV; 754 } 755 756 ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val); 757 if (ret < 0) { 758 dev_err(&pdev->dev, 759 "Error while reading BUCKs configuration\n"); 760 return ret; 761 } 762 bcores_merged = val & DA9063_BCORE_MERGE; 763 bmem_bio_merged = val & DA9063_BUCK_MERGE; 764 765 n_regulators = model->n_regulators; 766 if (bcores_merged) 767 n_regulators -= 2; /* remove BCORE1, BCORE2 */ 768 else 769 n_regulators--; /* remove BCORES_MERGED */ 770 if (bmem_bio_merged) 771 n_regulators -= 2; /* remove BMEM, BIO */ 772 else 773 n_regulators--; /* remove BMEM_BIO_MERGED */ 774 775 /* Allocate memory required by usable regulators */ 776 size = sizeof(struct da9063_regulators) + 777 n_regulators * sizeof(struct da9063_regulator); 778 regulators = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); 779 if (!regulators) 780 return -ENOMEM; 781 782 regulators->n_regulators = n_regulators; 783 platform_set_drvdata(pdev, regulators); 784 785 /* Register all regulators declared in platform information */ 786 n = 0; 787 id = 0; 788 while (n < regulators->n_regulators) { 789 /* Skip regulator IDs depending on merge mode configuration */ 790 switch (id) { 791 case DA9063_ID_BCORE1: 792 case DA9063_ID_BCORE2: 793 if (bcores_merged) { 794 id++; 795 continue; 796 } 797 break; 798 case DA9063_ID_BMEM: 799 case DA9063_ID_BIO: 800 if (bmem_bio_merged) { 801 id++; 802 continue; 803 } 804 break; 805 case DA9063_ID_BCORES_MERGED: 806 if (!bcores_merged) { 807 id++; 808 continue; 809 } 810 break; 811 case DA9063_ID_BMEM_BIO_MERGED: 812 if (!bmem_bio_merged) { 813 id++; 814 continue; 815 } 816 break; 817 } 818 819 /* Initialise regulator structure */ 820 regl = ®ulators->regulator[n]; 821 regl->hw = da9063; 822 regl->info = &model->regulator_info[id]; 823 regl->desc = regl->info->desc; 824 regl->desc.type = REGULATOR_VOLTAGE; 825 regl->desc.owner = THIS_MODULE; 826 827 if (regl->info->mode.reg) 828 regl->mode = devm_regmap_field_alloc(&pdev->dev, 829 da9063->regmap, regl->info->mode); 830 if (regl->info->suspend.reg) 831 regl->suspend = devm_regmap_field_alloc(&pdev->dev, 832 da9063->regmap, regl->info->suspend); 833 if (regl->info->sleep.reg) 834 regl->sleep = devm_regmap_field_alloc(&pdev->dev, 835 da9063->regmap, regl->info->sleep); 836 if (regl->info->suspend_sleep.reg) 837 regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev, 838 da9063->regmap, regl->info->suspend_sleep); 839 if (regl->info->ilimit.reg) 840 regl->ilimit = devm_regmap_field_alloc(&pdev->dev, 841 da9063->regmap, regl->info->ilimit); 842 843 /* Register regulator */ 844 memset(&config, 0, sizeof(config)); 845 config.dev = &pdev->dev; 846 config.init_data = da9063_get_regulator_initdata(regl_pdata, id); 847 config.driver_data = regl; 848 if (da9063_reg_matches) 849 config.of_node = da9063_reg_matches[id].of_node; 850 config.regmap = da9063->regmap; 851 regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, 852 &config); 853 if (IS_ERR(regl->rdev)) { 854 dev_err(&pdev->dev, 855 "Failed to register %s regulator\n", 856 regl->desc.name); 857 return PTR_ERR(regl->rdev); 858 } 859 id++; 860 n++; 861 } 862 863 /* LDOs overcurrent event support */ 864 irq = platform_get_irq_byname(pdev, "LDO_LIM"); 865 if (irq < 0) { 866 dev_err(&pdev->dev, "Failed to get IRQ.\n"); 867 return irq; 868 } 869 870 regulators->irq_ldo_lim = regmap_irq_get_virq(da9063->regmap_irq, irq); 871 if (regulators->irq_ldo_lim >= 0) { 872 ret = request_threaded_irq(regulators->irq_ldo_lim, 873 NULL, da9063_ldo_lim_event, 874 IRQF_TRIGGER_LOW | IRQF_ONESHOT, 875 "LDO_LIM", regulators); 876 if (ret) { 877 dev_err(&pdev->dev, 878 "Failed to request LDO_LIM IRQ.\n"); 879 regulators->irq_ldo_lim = -ENXIO; 880 } 881 } 882 883 return 0; 884 } 885 886 static int da9063_regulator_remove(struct platform_device *pdev) 887 { 888 struct da9063_regulators *regulators = platform_get_drvdata(pdev); 889 890 free_irq(regulators->irq_ldo_lim, regulators); 891 free_irq(regulators->irq_uvov, regulators); 892 893 return 0; 894 } 895 896 static struct platform_driver da9063_regulator_driver = { 897 .driver = { 898 .name = DA9063_DRVNAME_REGULATORS, 899 .owner = THIS_MODULE, 900 }, 901 .probe = da9063_regulator_probe, 902 .remove = da9063_regulator_remove, 903 }; 904 905 static int __init da9063_regulator_init(void) 906 { 907 return platform_driver_register(&da9063_regulator_driver); 908 } 909 subsys_initcall(da9063_regulator_init); 910 911 static void __exit da9063_regulator_cleanup(void) 912 { 913 platform_driver_unregister(&da9063_regulator_driver); 914 } 915 module_exit(da9063_regulator_cleanup); 916 917 918 /* Module information */ 919 MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>"); 920 MODULE_DESCRIPTION("DA9063 regulators driver"); 921 MODULE_LICENSE("GPL"); 922 MODULE_ALIAS("paltform:" DA9063_DRVNAME_REGULATORS); 923