1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright 2020 NXP. 4 * NXP PCA9450 pmic driver 5 */ 6 7 #include <linux/err.h> 8 #include <linux/i2c.h> 9 #include <linux/interrupt.h> 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/of.h> 13 #include <linux/of_device.h> 14 #include <linux/platform_device.h> 15 #include <linux/regulator/driver.h> 16 #include <linux/regulator/machine.h> 17 #include <linux/regulator/of_regulator.h> 18 #include <linux/regulator/pca9450.h> 19 20 struct pc9450_dvs_config { 21 unsigned int run_reg; /* dvs0 */ 22 unsigned int run_mask; 23 unsigned int standby_reg; /* dvs1 */ 24 unsigned int standby_mask; 25 }; 26 27 struct pca9450_regulator_desc { 28 struct regulator_desc desc; 29 const struct pc9450_dvs_config dvs; 30 }; 31 32 struct pca9450 { 33 struct device *dev; 34 struct regmap *regmap; 35 enum pca9450_chip_type type; 36 unsigned int rcnt; 37 int irq; 38 }; 39 40 static const struct regmap_range pca9450_status_range = { 41 .range_min = PCA9450_REG_INT1, 42 .range_max = PCA9450_REG_PWRON_STAT, 43 }; 44 45 static const struct regmap_access_table pca9450_volatile_regs = { 46 .yes_ranges = &pca9450_status_range, 47 .n_yes_ranges = 1, 48 }; 49 50 static const struct regmap_config pca9450_regmap_config = { 51 .reg_bits = 8, 52 .val_bits = 8, 53 .volatile_table = &pca9450_volatile_regs, 54 .max_register = PCA9450_MAX_REGISTER - 1, 55 .cache_type = REGCACHE_RBTREE, 56 }; 57 58 /* 59 * BUCK1/2/3 60 * BUCK1RAM[1:0] BUCK1 DVS ramp rate setting 61 * 00: 25mV/1usec 62 * 01: 25mV/2usec 63 * 10: 25mV/4usec 64 * 11: 25mV/8usec 65 */ 66 static int pca9450_dvs_set_ramp_delay(struct regulator_dev *rdev, 67 int ramp_delay) 68 { 69 int id = rdev_get_id(rdev); 70 unsigned int ramp_value; 71 72 switch (ramp_delay) { 73 case 1 ... 3125: 74 ramp_value = BUCK1_RAMP_3P125MV; 75 break; 76 case 3126 ... 6250: 77 ramp_value = BUCK1_RAMP_6P25MV; 78 break; 79 case 6251 ... 12500: 80 ramp_value = BUCK1_RAMP_12P5MV; 81 break; 82 case 12501 ... 25000: 83 ramp_value = BUCK1_RAMP_25MV; 84 break; 85 default: 86 ramp_value = BUCK1_RAMP_25MV; 87 } 88 89 return regmap_update_bits(rdev->regmap, PCA9450_REG_BUCK1CTRL + id * 3, 90 BUCK1_RAMP_MASK, ramp_value << 6); 91 } 92 93 static const struct regulator_ops pca9450_dvs_buck_regulator_ops = { 94 .enable = regulator_enable_regmap, 95 .disable = regulator_disable_regmap, 96 .is_enabled = regulator_is_enabled_regmap, 97 .list_voltage = regulator_list_voltage_linear_range, 98 .set_voltage_sel = regulator_set_voltage_sel_regmap, 99 .get_voltage_sel = regulator_get_voltage_sel_regmap, 100 .set_voltage_time_sel = regulator_set_voltage_time_sel, 101 .set_ramp_delay = pca9450_dvs_set_ramp_delay, 102 }; 103 104 static const struct regulator_ops pca9450_buck_regulator_ops = { 105 .enable = regulator_enable_regmap, 106 .disable = regulator_disable_regmap, 107 .is_enabled = regulator_is_enabled_regmap, 108 .list_voltage = regulator_list_voltage_linear_range, 109 .set_voltage_sel = regulator_set_voltage_sel_regmap, 110 .get_voltage_sel = regulator_get_voltage_sel_regmap, 111 .set_voltage_time_sel = regulator_set_voltage_time_sel, 112 }; 113 114 static const struct regulator_ops pca9450_ldo_regulator_ops = { 115 .enable = regulator_enable_regmap, 116 .disable = regulator_disable_regmap, 117 .is_enabled = regulator_is_enabled_regmap, 118 .list_voltage = regulator_list_voltage_linear_range, 119 .set_voltage_sel = regulator_set_voltage_sel_regmap, 120 .get_voltage_sel = regulator_get_voltage_sel_regmap, 121 }; 122 123 /* 124 * BUCK1/2/3 125 * 0.60 to 2.1875V (12.5mV step) 126 */ 127 static const struct linear_range pca9450_dvs_buck_volts[] = { 128 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x7F, 12500), 129 }; 130 131 /* 132 * BUCK4/5/6 133 * 0.6V to 3.4V (25mV step) 134 */ 135 static const struct linear_range pca9450_buck_volts[] = { 136 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x70, 25000), 137 REGULATOR_LINEAR_RANGE(3400000, 0x71, 0x7F, 0), 138 }; 139 140 /* 141 * LDO1 142 * 1.6 to 3.3V () 143 */ 144 static const struct linear_range pca9450_ldo1_volts[] = { 145 REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000), 146 REGULATOR_LINEAR_RANGE(3000000, 0x04, 0x07, 100000), 147 }; 148 149 /* 150 * LDO2 151 * 0.8 to 1.15V (50mV step) 152 */ 153 static const struct linear_range pca9450_ldo2_volts[] = { 154 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x07, 50000), 155 }; 156 157 /* 158 * LDO3/4 159 * 0.8 to 3.3V (100mV step) 160 */ 161 static const struct linear_range pca9450_ldo34_volts[] = { 162 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x19, 100000), 163 REGULATOR_LINEAR_RANGE(3300000, 0x1A, 0x1F, 0), 164 }; 165 166 /* 167 * LDO5 168 * 1.8 to 3.3V (100mV step) 169 */ 170 static const struct linear_range pca9450_ldo5_volts[] = { 171 REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000), 172 }; 173 174 static int buck_set_dvs(const struct regulator_desc *desc, 175 struct device_node *np, struct regmap *regmap, 176 char *prop, unsigned int reg, unsigned int mask) 177 { 178 int ret, i; 179 uint32_t uv; 180 181 ret = of_property_read_u32(np, prop, &uv); 182 if (ret == -EINVAL) 183 return 0; 184 else if (ret) 185 return ret; 186 187 for (i = 0; i < desc->n_voltages; i++) { 188 ret = regulator_desc_list_voltage_linear_range(desc, i); 189 if (ret < 0) 190 continue; 191 if (ret == uv) { 192 i <<= ffs(desc->vsel_mask) - 1; 193 ret = regmap_update_bits(regmap, reg, mask, i); 194 break; 195 } 196 } 197 198 return ret; 199 } 200 201 static int pca9450_set_dvs_levels(struct device_node *np, 202 const struct regulator_desc *desc, 203 struct regulator_config *cfg) 204 { 205 struct pca9450_regulator_desc *data = container_of(desc, 206 struct pca9450_regulator_desc, desc); 207 const struct pc9450_dvs_config *dvs = &data->dvs; 208 unsigned int reg, mask; 209 char *prop; 210 int i, ret = 0; 211 212 for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) { 213 switch (i) { 214 case PCA9450_DVS_LEVEL_RUN: 215 prop = "nxp,dvs-run-voltage"; 216 reg = dvs->run_reg; 217 mask = dvs->run_mask; 218 break; 219 case PCA9450_DVS_LEVEL_STANDBY: 220 prop = "nxp,dvs-standby-voltage"; 221 reg = dvs->standby_reg; 222 mask = dvs->standby_mask; 223 break; 224 default: 225 return -EINVAL; 226 } 227 228 ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask); 229 if (ret) 230 break; 231 } 232 233 return ret; 234 } 235 236 static const struct pca9450_regulator_desc pca9450a_regulators[] = { 237 { 238 .desc = { 239 .name = "buck1", 240 .of_match = of_match_ptr("BUCK1"), 241 .regulators_node = of_match_ptr("regulators"), 242 .id = PCA9450_BUCK1, 243 .ops = &pca9450_dvs_buck_regulator_ops, 244 .type = REGULATOR_VOLTAGE, 245 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM, 246 .linear_ranges = pca9450_dvs_buck_volts, 247 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 248 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0, 249 .vsel_mask = BUCK1OUT_DVS0_MASK, 250 .enable_reg = PCA9450_REG_BUCK1CTRL, 251 .enable_mask = BUCK1_ENMODE_MASK, 252 .owner = THIS_MODULE, 253 .of_parse_cb = pca9450_set_dvs_levels, 254 }, 255 .dvs = { 256 .run_reg = PCA9450_REG_BUCK1OUT_DVS0, 257 .run_mask = BUCK1OUT_DVS0_MASK, 258 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1, 259 .standby_mask = BUCK1OUT_DVS1_MASK, 260 }, 261 }, 262 { 263 .desc = { 264 .name = "buck2", 265 .of_match = of_match_ptr("BUCK2"), 266 .regulators_node = of_match_ptr("regulators"), 267 .id = PCA9450_BUCK2, 268 .ops = &pca9450_dvs_buck_regulator_ops, 269 .type = REGULATOR_VOLTAGE, 270 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM, 271 .linear_ranges = pca9450_dvs_buck_volts, 272 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 273 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0, 274 .vsel_mask = BUCK2OUT_DVS0_MASK, 275 .enable_reg = PCA9450_REG_BUCK2CTRL, 276 .enable_mask = BUCK1_ENMODE_MASK, 277 .owner = THIS_MODULE, 278 .of_parse_cb = pca9450_set_dvs_levels, 279 }, 280 .dvs = { 281 .run_reg = PCA9450_REG_BUCK2OUT_DVS0, 282 .run_mask = BUCK2OUT_DVS0_MASK, 283 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1, 284 .standby_mask = BUCK2OUT_DVS1_MASK, 285 }, 286 }, 287 { 288 .desc = { 289 .name = "buck3", 290 .of_match = of_match_ptr("BUCK3"), 291 .regulators_node = of_match_ptr("regulators"), 292 .id = PCA9450_BUCK3, 293 .ops = &pca9450_dvs_buck_regulator_ops, 294 .type = REGULATOR_VOLTAGE, 295 .n_voltages = PCA9450_BUCK3_VOLTAGE_NUM, 296 .linear_ranges = pca9450_dvs_buck_volts, 297 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 298 .vsel_reg = PCA9450_REG_BUCK3OUT_DVS0, 299 .vsel_mask = BUCK3OUT_DVS0_MASK, 300 .enable_reg = PCA9450_REG_BUCK3CTRL, 301 .enable_mask = BUCK3_ENMODE_MASK, 302 .owner = THIS_MODULE, 303 .of_parse_cb = pca9450_set_dvs_levels, 304 }, 305 .dvs = { 306 .run_reg = PCA9450_REG_BUCK3OUT_DVS0, 307 .run_mask = BUCK3OUT_DVS0_MASK, 308 .standby_reg = PCA9450_REG_BUCK3OUT_DVS1, 309 .standby_mask = BUCK3OUT_DVS1_MASK, 310 }, 311 }, 312 { 313 .desc = { 314 .name = "buck4", 315 .of_match = of_match_ptr("BUCK4"), 316 .regulators_node = of_match_ptr("regulators"), 317 .id = PCA9450_BUCK4, 318 .ops = &pca9450_buck_regulator_ops, 319 .type = REGULATOR_VOLTAGE, 320 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM, 321 .linear_ranges = pca9450_buck_volts, 322 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 323 .vsel_reg = PCA9450_REG_BUCK4OUT, 324 .vsel_mask = BUCK4OUT_MASK, 325 .enable_reg = PCA9450_REG_BUCK4CTRL, 326 .enable_mask = BUCK4_ENMODE_MASK, 327 .owner = THIS_MODULE, 328 }, 329 }, 330 { 331 .desc = { 332 .name = "buck5", 333 .of_match = of_match_ptr("BUCK5"), 334 .regulators_node = of_match_ptr("regulators"), 335 .id = PCA9450_BUCK5, 336 .ops = &pca9450_buck_regulator_ops, 337 .type = REGULATOR_VOLTAGE, 338 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM, 339 .linear_ranges = pca9450_buck_volts, 340 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 341 .vsel_reg = PCA9450_REG_BUCK5OUT, 342 .vsel_mask = BUCK5OUT_MASK, 343 .enable_reg = PCA9450_REG_BUCK5CTRL, 344 .enable_mask = BUCK5_ENMODE_MASK, 345 .owner = THIS_MODULE, 346 }, 347 }, 348 { 349 .desc = { 350 .name = "buck6", 351 .of_match = of_match_ptr("BUCK6"), 352 .regulators_node = of_match_ptr("regulators"), 353 .id = PCA9450_BUCK6, 354 .ops = &pca9450_buck_regulator_ops, 355 .type = REGULATOR_VOLTAGE, 356 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM, 357 .linear_ranges = pca9450_buck_volts, 358 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 359 .vsel_reg = PCA9450_REG_BUCK6OUT, 360 .vsel_mask = BUCK6OUT_MASK, 361 .enable_reg = PCA9450_REG_BUCK6CTRL, 362 .enable_mask = BUCK6_ENMODE_MASK, 363 .owner = THIS_MODULE, 364 }, 365 }, 366 { 367 .desc = { 368 .name = "ldo1", 369 .of_match = of_match_ptr("LDO1"), 370 .regulators_node = of_match_ptr("regulators"), 371 .id = PCA9450_LDO1, 372 .ops = &pca9450_ldo_regulator_ops, 373 .type = REGULATOR_VOLTAGE, 374 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM, 375 .linear_ranges = pca9450_ldo1_volts, 376 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts), 377 .vsel_reg = PCA9450_REG_LDO1CTRL, 378 .vsel_mask = LDO1OUT_MASK, 379 .enable_reg = PCA9450_REG_LDO1CTRL, 380 .enable_mask = LDO1_EN_MASK, 381 .owner = THIS_MODULE, 382 }, 383 }, 384 { 385 .desc = { 386 .name = "ldo2", 387 .of_match = of_match_ptr("LDO2"), 388 .regulators_node = of_match_ptr("regulators"), 389 .id = PCA9450_LDO2, 390 .ops = &pca9450_ldo_regulator_ops, 391 .type = REGULATOR_VOLTAGE, 392 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM, 393 .linear_ranges = pca9450_ldo2_volts, 394 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts), 395 .vsel_reg = PCA9450_REG_LDO2CTRL, 396 .vsel_mask = LDO2OUT_MASK, 397 .enable_reg = PCA9450_REG_LDO2CTRL, 398 .enable_mask = LDO2_EN_MASK, 399 .owner = THIS_MODULE, 400 }, 401 }, 402 { 403 .desc = { 404 .name = "ldo3", 405 .of_match = of_match_ptr("LDO3"), 406 .regulators_node = of_match_ptr("regulators"), 407 .id = PCA9450_LDO3, 408 .ops = &pca9450_ldo_regulator_ops, 409 .type = REGULATOR_VOLTAGE, 410 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM, 411 .linear_ranges = pca9450_ldo34_volts, 412 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 413 .vsel_reg = PCA9450_REG_LDO3CTRL, 414 .vsel_mask = LDO3OUT_MASK, 415 .enable_reg = PCA9450_REG_LDO3CTRL, 416 .enable_mask = LDO3_EN_MASK, 417 .owner = THIS_MODULE, 418 }, 419 }, 420 { 421 .desc = { 422 .name = "ldo4", 423 .of_match = of_match_ptr("LDO4"), 424 .regulators_node = of_match_ptr("regulators"), 425 .id = PCA9450_LDO4, 426 .ops = &pca9450_ldo_regulator_ops, 427 .type = REGULATOR_VOLTAGE, 428 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM, 429 .linear_ranges = pca9450_ldo34_volts, 430 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 431 .vsel_reg = PCA9450_REG_LDO4CTRL, 432 .vsel_mask = LDO4OUT_MASK, 433 .enable_reg = PCA9450_REG_LDO4CTRL, 434 .enable_mask = LDO4_EN_MASK, 435 .owner = THIS_MODULE, 436 }, 437 }, 438 { 439 .desc = { 440 .name = "ldo5", 441 .of_match = of_match_ptr("LDO5"), 442 .regulators_node = of_match_ptr("regulators"), 443 .id = PCA9450_LDO5, 444 .ops = &pca9450_ldo_regulator_ops, 445 .type = REGULATOR_VOLTAGE, 446 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM, 447 .linear_ranges = pca9450_ldo5_volts, 448 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts), 449 .vsel_reg = PCA9450_REG_LDO5CTRL_H, 450 .vsel_mask = LDO5HOUT_MASK, 451 .enable_reg = PCA9450_REG_LDO5CTRL_H, 452 .enable_mask = LDO5H_EN_MASK, 453 .owner = THIS_MODULE, 454 }, 455 }, 456 }; 457 458 /* 459 * Buck3 removed on PCA9450B and connected with Buck1 internal for dual phase 460 * on PCA9450C as no Buck3. 461 */ 462 static const struct pca9450_regulator_desc pca9450bc_regulators[] = { 463 { 464 .desc = { 465 .name = "buck1", 466 .of_match = of_match_ptr("BUCK1"), 467 .regulators_node = of_match_ptr("regulators"), 468 .id = PCA9450_BUCK1, 469 .ops = &pca9450_dvs_buck_regulator_ops, 470 .type = REGULATOR_VOLTAGE, 471 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM, 472 .linear_ranges = pca9450_dvs_buck_volts, 473 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 474 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0, 475 .vsel_mask = BUCK1OUT_DVS0_MASK, 476 .enable_reg = PCA9450_REG_BUCK1CTRL, 477 .enable_mask = BUCK1_ENMODE_MASK, 478 .owner = THIS_MODULE, 479 .of_parse_cb = pca9450_set_dvs_levels, 480 }, 481 .dvs = { 482 .run_reg = PCA9450_REG_BUCK1OUT_DVS0, 483 .run_mask = BUCK1OUT_DVS0_MASK, 484 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1, 485 .standby_mask = BUCK1OUT_DVS1_MASK, 486 }, 487 }, 488 { 489 .desc = { 490 .name = "buck2", 491 .of_match = of_match_ptr("BUCK2"), 492 .regulators_node = of_match_ptr("regulators"), 493 .id = PCA9450_BUCK2, 494 .ops = &pca9450_dvs_buck_regulator_ops, 495 .type = REGULATOR_VOLTAGE, 496 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM, 497 .linear_ranges = pca9450_dvs_buck_volts, 498 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 499 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0, 500 .vsel_mask = BUCK2OUT_DVS0_MASK, 501 .enable_reg = PCA9450_REG_BUCK2CTRL, 502 .enable_mask = BUCK1_ENMODE_MASK, 503 .owner = THIS_MODULE, 504 .of_parse_cb = pca9450_set_dvs_levels, 505 }, 506 .dvs = { 507 .run_reg = PCA9450_REG_BUCK2OUT_DVS0, 508 .run_mask = BUCK2OUT_DVS0_MASK, 509 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1, 510 .standby_mask = BUCK2OUT_DVS1_MASK, 511 }, 512 }, 513 { 514 .desc = { 515 .name = "buck4", 516 .of_match = of_match_ptr("BUCK4"), 517 .regulators_node = of_match_ptr("regulators"), 518 .id = PCA9450_BUCK4, 519 .ops = &pca9450_buck_regulator_ops, 520 .type = REGULATOR_VOLTAGE, 521 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM, 522 .linear_ranges = pca9450_buck_volts, 523 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 524 .vsel_reg = PCA9450_REG_BUCK4OUT, 525 .vsel_mask = BUCK4OUT_MASK, 526 .enable_reg = PCA9450_REG_BUCK4CTRL, 527 .enable_mask = BUCK4_ENMODE_MASK, 528 .owner = THIS_MODULE, 529 }, 530 }, 531 { 532 .desc = { 533 .name = "buck5", 534 .of_match = of_match_ptr("BUCK5"), 535 .regulators_node = of_match_ptr("regulators"), 536 .id = PCA9450_BUCK5, 537 .ops = &pca9450_buck_regulator_ops, 538 .type = REGULATOR_VOLTAGE, 539 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM, 540 .linear_ranges = pca9450_buck_volts, 541 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 542 .vsel_reg = PCA9450_REG_BUCK5OUT, 543 .vsel_mask = BUCK5OUT_MASK, 544 .enable_reg = PCA9450_REG_BUCK5CTRL, 545 .enable_mask = BUCK5_ENMODE_MASK, 546 .owner = THIS_MODULE, 547 }, 548 }, 549 { 550 .desc = { 551 .name = "buck6", 552 .of_match = of_match_ptr("BUCK6"), 553 .regulators_node = of_match_ptr("regulators"), 554 .id = PCA9450_BUCK6, 555 .ops = &pca9450_buck_regulator_ops, 556 .type = REGULATOR_VOLTAGE, 557 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM, 558 .linear_ranges = pca9450_buck_volts, 559 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 560 .vsel_reg = PCA9450_REG_BUCK6OUT, 561 .vsel_mask = BUCK6OUT_MASK, 562 .enable_reg = PCA9450_REG_BUCK6CTRL, 563 .enable_mask = BUCK6_ENMODE_MASK, 564 .owner = THIS_MODULE, 565 }, 566 }, 567 { 568 .desc = { 569 .name = "ldo1", 570 .of_match = of_match_ptr("LDO1"), 571 .regulators_node = of_match_ptr("regulators"), 572 .id = PCA9450_LDO1, 573 .ops = &pca9450_ldo_regulator_ops, 574 .type = REGULATOR_VOLTAGE, 575 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM, 576 .linear_ranges = pca9450_ldo1_volts, 577 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts), 578 .vsel_reg = PCA9450_REG_LDO1CTRL, 579 .vsel_mask = LDO1OUT_MASK, 580 .enable_reg = PCA9450_REG_LDO1CTRL, 581 .enable_mask = LDO1_EN_MASK, 582 .owner = THIS_MODULE, 583 }, 584 }, 585 { 586 .desc = { 587 .name = "ldo2", 588 .of_match = of_match_ptr("LDO2"), 589 .regulators_node = of_match_ptr("regulators"), 590 .id = PCA9450_LDO2, 591 .ops = &pca9450_ldo_regulator_ops, 592 .type = REGULATOR_VOLTAGE, 593 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM, 594 .linear_ranges = pca9450_ldo2_volts, 595 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts), 596 .vsel_reg = PCA9450_REG_LDO2CTRL, 597 .vsel_mask = LDO2OUT_MASK, 598 .enable_reg = PCA9450_REG_LDO2CTRL, 599 .enable_mask = LDO2_EN_MASK, 600 .owner = THIS_MODULE, 601 }, 602 }, 603 { 604 .desc = { 605 .name = "ldo3", 606 .of_match = of_match_ptr("LDO3"), 607 .regulators_node = of_match_ptr("regulators"), 608 .id = PCA9450_LDO3, 609 .ops = &pca9450_ldo_regulator_ops, 610 .type = REGULATOR_VOLTAGE, 611 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM, 612 .linear_ranges = pca9450_ldo34_volts, 613 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 614 .vsel_reg = PCA9450_REG_LDO3CTRL, 615 .vsel_mask = LDO3OUT_MASK, 616 .enable_reg = PCA9450_REG_LDO3CTRL, 617 .enable_mask = LDO3_EN_MASK, 618 .owner = THIS_MODULE, 619 }, 620 }, 621 { 622 .desc = { 623 .name = "ldo4", 624 .of_match = of_match_ptr("LDO4"), 625 .regulators_node = of_match_ptr("regulators"), 626 .id = PCA9450_LDO4, 627 .ops = &pca9450_ldo_regulator_ops, 628 .type = REGULATOR_VOLTAGE, 629 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM, 630 .linear_ranges = pca9450_ldo34_volts, 631 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 632 .vsel_reg = PCA9450_REG_LDO4CTRL, 633 .vsel_mask = LDO4OUT_MASK, 634 .enable_reg = PCA9450_REG_LDO4CTRL, 635 .enable_mask = LDO4_EN_MASK, 636 .owner = THIS_MODULE, 637 }, 638 }, 639 { 640 .desc = { 641 .name = "ldo5", 642 .of_match = of_match_ptr("LDO5"), 643 .regulators_node = of_match_ptr("regulators"), 644 .id = PCA9450_LDO5, 645 .ops = &pca9450_ldo_regulator_ops, 646 .type = REGULATOR_VOLTAGE, 647 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM, 648 .linear_ranges = pca9450_ldo5_volts, 649 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts), 650 .vsel_reg = PCA9450_REG_LDO5CTRL_H, 651 .vsel_mask = LDO5HOUT_MASK, 652 .enable_reg = PCA9450_REG_LDO5CTRL_H, 653 .enable_mask = LDO5H_EN_MASK, 654 .owner = THIS_MODULE, 655 }, 656 }, 657 }; 658 659 static irqreturn_t pca9450_irq_handler(int irq, void *data) 660 { 661 struct pca9450 *pca9450 = data; 662 struct regmap *regmap = pca9450->regmap; 663 unsigned int status; 664 int ret; 665 666 ret = regmap_read(regmap, PCA9450_REG_INT1, &status); 667 if (ret < 0) { 668 dev_err(pca9450->dev, 669 "Failed to read INT1(%d)\n", ret); 670 return IRQ_NONE; 671 } 672 673 if (status & IRQ_PWRON) 674 dev_warn(pca9450->dev, "PWRON interrupt.\n"); 675 676 if (status & IRQ_WDOGB) 677 dev_warn(pca9450->dev, "WDOGB interrupt.\n"); 678 679 if (status & IRQ_VR_FLT1) 680 dev_warn(pca9450->dev, "VRFLT1 interrupt.\n"); 681 682 if (status & IRQ_VR_FLT2) 683 dev_warn(pca9450->dev, "VRFLT2 interrupt.\n"); 684 685 if (status & IRQ_LOWVSYS) 686 dev_warn(pca9450->dev, "LOWVSYS interrupt.\n"); 687 688 if (status & IRQ_THERM_105) 689 dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n"); 690 691 if (status & IRQ_THERM_125) 692 dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n"); 693 694 return IRQ_HANDLED; 695 } 696 697 static int pca9450_i2c_probe(struct i2c_client *i2c, 698 const struct i2c_device_id *id) 699 { 700 enum pca9450_chip_type type = (unsigned int)(uintptr_t) 701 of_device_get_match_data(&i2c->dev); 702 const struct pca9450_regulator_desc *regulator_desc; 703 struct regulator_config config = { }; 704 struct pca9450 *pca9450; 705 unsigned int device_id, i; 706 int ret; 707 708 if (!i2c->irq) { 709 dev_err(&i2c->dev, "No IRQ configured?\n"); 710 return -EINVAL; 711 } 712 713 pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL); 714 if (!pca9450) 715 return -ENOMEM; 716 717 switch (type) { 718 case PCA9450_TYPE_PCA9450A: 719 regulator_desc = pca9450a_regulators; 720 pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators); 721 break; 722 case PCA9450_TYPE_PCA9450BC: 723 regulator_desc = pca9450bc_regulators; 724 pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators); 725 break; 726 default: 727 dev_err(&i2c->dev, "Unknown device type"); 728 return -EINVAL; 729 } 730 731 pca9450->irq = i2c->irq; 732 pca9450->type = type; 733 pca9450->dev = &i2c->dev; 734 735 dev_set_drvdata(&i2c->dev, pca9450); 736 737 pca9450->regmap = devm_regmap_init_i2c(i2c, 738 &pca9450_regmap_config); 739 if (IS_ERR(pca9450->regmap)) { 740 dev_err(&i2c->dev, "regmap initialization failed\n"); 741 return PTR_ERR(pca9450->regmap); 742 } 743 744 ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id); 745 if (ret) { 746 dev_err(&i2c->dev, "Read device id error\n"); 747 return ret; 748 } 749 750 /* Check your board and dts for match the right pmic */ 751 if (((device_id >> 4) != 0x1 && type == PCA9450_TYPE_PCA9450A) || 752 ((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC)) { 753 dev_err(&i2c->dev, "Device id(%x) mismatched\n", 754 device_id >> 4); 755 return -EINVAL; 756 } 757 758 for (i = 0; i < pca9450->rcnt; i++) { 759 const struct regulator_desc *desc; 760 struct regulator_dev *rdev; 761 const struct pca9450_regulator_desc *r; 762 763 r = ®ulator_desc[i]; 764 desc = &r->desc; 765 766 config.regmap = pca9450->regmap; 767 config.dev = pca9450->dev; 768 769 rdev = devm_regulator_register(pca9450->dev, desc, &config); 770 if (IS_ERR(rdev)) { 771 ret = PTR_ERR(rdev); 772 dev_err(pca9450->dev, 773 "Failed to register regulator(%s): %d\n", 774 desc->name, ret); 775 return ret; 776 } 777 } 778 779 ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL, 780 pca9450_irq_handler, 781 (IRQF_TRIGGER_FALLING | IRQF_ONESHOT), 782 "pca9450-irq", pca9450); 783 if (ret != 0) { 784 dev_err(pca9450->dev, "Failed to request IRQ: %d\n", 785 pca9450->irq); 786 return ret; 787 } 788 /* Unmask all interrupt except PWRON/WDOG/RSVD */ 789 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK, 790 IRQ_VR_FLT1 | IRQ_VR_FLT2 | IRQ_LOWVSYS | 791 IRQ_THERM_105 | IRQ_THERM_125, 792 IRQ_PWRON | IRQ_WDOGB | IRQ_RSVD); 793 if (ret) { 794 dev_err(&i2c->dev, "Unmask irq error\n"); 795 return ret; 796 } 797 798 dev_info(&i2c->dev, "%s probed.\n", 799 type == PCA9450_TYPE_PCA9450A ? "pca9450a" : "pca9450bc"); 800 801 return 0; 802 } 803 804 static const struct of_device_id pca9450_of_match[] = { 805 { 806 .compatible = "nxp,pca9450a", 807 .data = (void *)PCA9450_TYPE_PCA9450A, 808 }, 809 { 810 .compatible = "nxp,pca9450b", 811 .data = (void *)PCA9450_TYPE_PCA9450BC, 812 }, 813 { 814 .compatible = "nxp,pca9450c", 815 .data = (void *)PCA9450_TYPE_PCA9450BC, 816 }, 817 { } 818 }; 819 MODULE_DEVICE_TABLE(of, pca9450_of_match); 820 821 static struct i2c_driver pca9450_i2c_driver = { 822 .driver = { 823 .name = "nxp-pca9450", 824 .of_match_table = pca9450_of_match, 825 }, 826 .probe = pca9450_i2c_probe, 827 }; 828 829 module_i2c_driver(pca9450_i2c_driver); 830 831 MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>"); 832 MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver"); 833 MODULE_LICENSE("GPL"); 834