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/gpio/consumer.h> 9 #include <linux/i2c.h> 10 #include <linux/interrupt.h> 11 #include <linux/kernel.h> 12 #include <linux/module.h> 13 #include <linux/of.h> 14 #include <linux/of_device.h> 15 #include <linux/platform_device.h> 16 #include <linux/regulator/driver.h> 17 #include <linux/regulator/machine.h> 18 #include <linux/regulator/of_regulator.h> 19 #include <linux/regulator/pca9450.h> 20 21 struct pc9450_dvs_config { 22 unsigned int run_reg; /* dvs0 */ 23 unsigned int run_mask; 24 unsigned int standby_reg; /* dvs1 */ 25 unsigned int standby_mask; 26 }; 27 28 struct pca9450_regulator_desc { 29 struct regulator_desc desc; 30 const struct pc9450_dvs_config dvs; 31 }; 32 33 struct pca9450 { 34 struct device *dev; 35 struct regmap *regmap; 36 struct gpio_desc *sd_vsel_gpio; 37 enum pca9450_chip_type type; 38 unsigned int rcnt; 39 int irq; 40 }; 41 42 static const struct regmap_range pca9450_status_range = { 43 .range_min = PCA9450_REG_INT1, 44 .range_max = PCA9450_REG_PWRON_STAT, 45 }; 46 47 static const struct regmap_access_table pca9450_volatile_regs = { 48 .yes_ranges = &pca9450_status_range, 49 .n_yes_ranges = 1, 50 }; 51 52 static const struct regmap_config pca9450_regmap_config = { 53 .reg_bits = 8, 54 .val_bits = 8, 55 .volatile_table = &pca9450_volatile_regs, 56 .max_register = PCA9450_MAX_REGISTER - 1, 57 .cache_type = REGCACHE_RBTREE, 58 }; 59 60 /* 61 * BUCK1/2/3 62 * BUCK1RAM[1:0] BUCK1 DVS ramp rate setting 63 * 00: 25mV/1usec 64 * 01: 25mV/2usec 65 * 10: 25mV/4usec 66 * 11: 25mV/8usec 67 */ 68 static int pca9450_dvs_set_ramp_delay(struct regulator_dev *rdev, 69 int ramp_delay) 70 { 71 int id = rdev_get_id(rdev); 72 unsigned int ramp_value; 73 74 switch (ramp_delay) { 75 case 1 ... 3125: 76 ramp_value = BUCK1_RAMP_3P125MV; 77 break; 78 case 3126 ... 6250: 79 ramp_value = BUCK1_RAMP_6P25MV; 80 break; 81 case 6251 ... 12500: 82 ramp_value = BUCK1_RAMP_12P5MV; 83 break; 84 case 12501 ... 25000: 85 ramp_value = BUCK1_RAMP_25MV; 86 break; 87 default: 88 ramp_value = BUCK1_RAMP_25MV; 89 } 90 91 return regmap_update_bits(rdev->regmap, PCA9450_REG_BUCK1CTRL + id * 3, 92 BUCK1_RAMP_MASK, ramp_value << 6); 93 } 94 95 static const struct regulator_ops pca9450_dvs_buck_regulator_ops = { 96 .enable = regulator_enable_regmap, 97 .disable = regulator_disable_regmap, 98 .is_enabled = regulator_is_enabled_regmap, 99 .list_voltage = regulator_list_voltage_linear_range, 100 .set_voltage_sel = regulator_set_voltage_sel_regmap, 101 .get_voltage_sel = regulator_get_voltage_sel_regmap, 102 .set_voltage_time_sel = regulator_set_voltage_time_sel, 103 .set_ramp_delay = pca9450_dvs_set_ramp_delay, 104 }; 105 106 static const struct regulator_ops pca9450_buck_regulator_ops = { 107 .enable = regulator_enable_regmap, 108 .disable = regulator_disable_regmap, 109 .is_enabled = regulator_is_enabled_regmap, 110 .list_voltage = regulator_list_voltage_linear_range, 111 .set_voltage_sel = regulator_set_voltage_sel_regmap, 112 .get_voltage_sel = regulator_get_voltage_sel_regmap, 113 .set_voltage_time_sel = regulator_set_voltage_time_sel, 114 }; 115 116 static const struct regulator_ops pca9450_ldo_regulator_ops = { 117 .enable = regulator_enable_regmap, 118 .disable = regulator_disable_regmap, 119 .is_enabled = regulator_is_enabled_regmap, 120 .list_voltage = regulator_list_voltage_linear_range, 121 .set_voltage_sel = regulator_set_voltage_sel_regmap, 122 .get_voltage_sel = regulator_get_voltage_sel_regmap, 123 }; 124 125 /* 126 * BUCK1/2/3 127 * 0.60 to 2.1875V (12.5mV step) 128 */ 129 static const struct linear_range pca9450_dvs_buck_volts[] = { 130 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x7F, 12500), 131 }; 132 133 /* 134 * BUCK4/5/6 135 * 0.6V to 3.4V (25mV step) 136 */ 137 static const struct linear_range pca9450_buck_volts[] = { 138 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x70, 25000), 139 REGULATOR_LINEAR_RANGE(3400000, 0x71, 0x7F, 0), 140 }; 141 142 /* 143 * LDO1 144 * 1.6 to 3.3V () 145 */ 146 static const struct linear_range pca9450_ldo1_volts[] = { 147 REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000), 148 REGULATOR_LINEAR_RANGE(3000000, 0x04, 0x07, 100000), 149 }; 150 151 /* 152 * LDO2 153 * 0.8 to 1.15V (50mV step) 154 */ 155 static const struct linear_range pca9450_ldo2_volts[] = { 156 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x07, 50000), 157 }; 158 159 /* 160 * LDO3/4 161 * 0.8 to 3.3V (100mV step) 162 */ 163 static const struct linear_range pca9450_ldo34_volts[] = { 164 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x19, 100000), 165 REGULATOR_LINEAR_RANGE(3300000, 0x1A, 0x1F, 0), 166 }; 167 168 /* 169 * LDO5 170 * 1.8 to 3.3V (100mV step) 171 */ 172 static const struct linear_range pca9450_ldo5_volts[] = { 173 REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000), 174 }; 175 176 static int buck_set_dvs(const struct regulator_desc *desc, 177 struct device_node *np, struct regmap *regmap, 178 char *prop, unsigned int reg, unsigned int mask) 179 { 180 int ret, i; 181 uint32_t uv; 182 183 ret = of_property_read_u32(np, prop, &uv); 184 if (ret == -EINVAL) 185 return 0; 186 else if (ret) 187 return ret; 188 189 for (i = 0; i < desc->n_voltages; i++) { 190 ret = regulator_desc_list_voltage_linear_range(desc, i); 191 if (ret < 0) 192 continue; 193 if (ret == uv) { 194 i <<= ffs(desc->vsel_mask) - 1; 195 ret = regmap_update_bits(regmap, reg, mask, i); 196 break; 197 } 198 } 199 200 return ret; 201 } 202 203 static int pca9450_set_dvs_levels(struct device_node *np, 204 const struct regulator_desc *desc, 205 struct regulator_config *cfg) 206 { 207 struct pca9450_regulator_desc *data = container_of(desc, 208 struct pca9450_regulator_desc, desc); 209 const struct pc9450_dvs_config *dvs = &data->dvs; 210 unsigned int reg, mask; 211 char *prop; 212 int i, ret = 0; 213 214 for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) { 215 switch (i) { 216 case PCA9450_DVS_LEVEL_RUN: 217 prop = "nxp,dvs-run-voltage"; 218 reg = dvs->run_reg; 219 mask = dvs->run_mask; 220 break; 221 case PCA9450_DVS_LEVEL_STANDBY: 222 prop = "nxp,dvs-standby-voltage"; 223 reg = dvs->standby_reg; 224 mask = dvs->standby_mask; 225 break; 226 default: 227 return -EINVAL; 228 } 229 230 ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask); 231 if (ret) 232 break; 233 } 234 235 return ret; 236 } 237 238 static const struct pca9450_regulator_desc pca9450a_regulators[] = { 239 { 240 .desc = { 241 .name = "buck1", 242 .of_match = of_match_ptr("BUCK1"), 243 .regulators_node = of_match_ptr("regulators"), 244 .id = PCA9450_BUCK1, 245 .ops = &pca9450_dvs_buck_regulator_ops, 246 .type = REGULATOR_VOLTAGE, 247 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM, 248 .linear_ranges = pca9450_dvs_buck_volts, 249 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 250 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0, 251 .vsel_mask = BUCK1OUT_DVS0_MASK, 252 .enable_reg = PCA9450_REG_BUCK1CTRL, 253 .enable_mask = BUCK1_ENMODE_MASK, 254 .owner = THIS_MODULE, 255 .of_parse_cb = pca9450_set_dvs_levels, 256 }, 257 .dvs = { 258 .run_reg = PCA9450_REG_BUCK1OUT_DVS0, 259 .run_mask = BUCK1OUT_DVS0_MASK, 260 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1, 261 .standby_mask = BUCK1OUT_DVS1_MASK, 262 }, 263 }, 264 { 265 .desc = { 266 .name = "buck2", 267 .of_match = of_match_ptr("BUCK2"), 268 .regulators_node = of_match_ptr("regulators"), 269 .id = PCA9450_BUCK2, 270 .ops = &pca9450_dvs_buck_regulator_ops, 271 .type = REGULATOR_VOLTAGE, 272 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM, 273 .linear_ranges = pca9450_dvs_buck_volts, 274 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 275 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0, 276 .vsel_mask = BUCK2OUT_DVS0_MASK, 277 .enable_reg = PCA9450_REG_BUCK2CTRL, 278 .enable_mask = BUCK1_ENMODE_MASK, 279 .owner = THIS_MODULE, 280 .of_parse_cb = pca9450_set_dvs_levels, 281 }, 282 .dvs = { 283 .run_reg = PCA9450_REG_BUCK2OUT_DVS0, 284 .run_mask = BUCK2OUT_DVS0_MASK, 285 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1, 286 .standby_mask = BUCK2OUT_DVS1_MASK, 287 }, 288 }, 289 { 290 .desc = { 291 .name = "buck3", 292 .of_match = of_match_ptr("BUCK3"), 293 .regulators_node = of_match_ptr("regulators"), 294 .id = PCA9450_BUCK3, 295 .ops = &pca9450_dvs_buck_regulator_ops, 296 .type = REGULATOR_VOLTAGE, 297 .n_voltages = PCA9450_BUCK3_VOLTAGE_NUM, 298 .linear_ranges = pca9450_dvs_buck_volts, 299 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 300 .vsel_reg = PCA9450_REG_BUCK3OUT_DVS0, 301 .vsel_mask = BUCK3OUT_DVS0_MASK, 302 .enable_reg = PCA9450_REG_BUCK3CTRL, 303 .enable_mask = BUCK3_ENMODE_MASK, 304 .owner = THIS_MODULE, 305 .of_parse_cb = pca9450_set_dvs_levels, 306 }, 307 .dvs = { 308 .run_reg = PCA9450_REG_BUCK3OUT_DVS0, 309 .run_mask = BUCK3OUT_DVS0_MASK, 310 .standby_reg = PCA9450_REG_BUCK3OUT_DVS1, 311 .standby_mask = BUCK3OUT_DVS1_MASK, 312 }, 313 }, 314 { 315 .desc = { 316 .name = "buck4", 317 .of_match = of_match_ptr("BUCK4"), 318 .regulators_node = of_match_ptr("regulators"), 319 .id = PCA9450_BUCK4, 320 .ops = &pca9450_buck_regulator_ops, 321 .type = REGULATOR_VOLTAGE, 322 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM, 323 .linear_ranges = pca9450_buck_volts, 324 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 325 .vsel_reg = PCA9450_REG_BUCK4OUT, 326 .vsel_mask = BUCK4OUT_MASK, 327 .enable_reg = PCA9450_REG_BUCK4CTRL, 328 .enable_mask = BUCK4_ENMODE_MASK, 329 .owner = THIS_MODULE, 330 }, 331 }, 332 { 333 .desc = { 334 .name = "buck5", 335 .of_match = of_match_ptr("BUCK5"), 336 .regulators_node = of_match_ptr("regulators"), 337 .id = PCA9450_BUCK5, 338 .ops = &pca9450_buck_regulator_ops, 339 .type = REGULATOR_VOLTAGE, 340 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM, 341 .linear_ranges = pca9450_buck_volts, 342 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 343 .vsel_reg = PCA9450_REG_BUCK5OUT, 344 .vsel_mask = BUCK5OUT_MASK, 345 .enable_reg = PCA9450_REG_BUCK5CTRL, 346 .enable_mask = BUCK5_ENMODE_MASK, 347 .owner = THIS_MODULE, 348 }, 349 }, 350 { 351 .desc = { 352 .name = "buck6", 353 .of_match = of_match_ptr("BUCK6"), 354 .regulators_node = of_match_ptr("regulators"), 355 .id = PCA9450_BUCK6, 356 .ops = &pca9450_buck_regulator_ops, 357 .type = REGULATOR_VOLTAGE, 358 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM, 359 .linear_ranges = pca9450_buck_volts, 360 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 361 .vsel_reg = PCA9450_REG_BUCK6OUT, 362 .vsel_mask = BUCK6OUT_MASK, 363 .enable_reg = PCA9450_REG_BUCK6CTRL, 364 .enable_mask = BUCK6_ENMODE_MASK, 365 .owner = THIS_MODULE, 366 }, 367 }, 368 { 369 .desc = { 370 .name = "ldo1", 371 .of_match = of_match_ptr("LDO1"), 372 .regulators_node = of_match_ptr("regulators"), 373 .id = PCA9450_LDO1, 374 .ops = &pca9450_ldo_regulator_ops, 375 .type = REGULATOR_VOLTAGE, 376 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM, 377 .linear_ranges = pca9450_ldo1_volts, 378 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts), 379 .vsel_reg = PCA9450_REG_LDO1CTRL, 380 .vsel_mask = LDO1OUT_MASK, 381 .enable_reg = PCA9450_REG_LDO1CTRL, 382 .enable_mask = LDO1_EN_MASK, 383 .owner = THIS_MODULE, 384 }, 385 }, 386 { 387 .desc = { 388 .name = "ldo2", 389 .of_match = of_match_ptr("LDO2"), 390 .regulators_node = of_match_ptr("regulators"), 391 .id = PCA9450_LDO2, 392 .ops = &pca9450_ldo_regulator_ops, 393 .type = REGULATOR_VOLTAGE, 394 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM, 395 .linear_ranges = pca9450_ldo2_volts, 396 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts), 397 .vsel_reg = PCA9450_REG_LDO2CTRL, 398 .vsel_mask = LDO2OUT_MASK, 399 .enable_reg = PCA9450_REG_LDO2CTRL, 400 .enable_mask = LDO2_EN_MASK, 401 .owner = THIS_MODULE, 402 }, 403 }, 404 { 405 .desc = { 406 .name = "ldo3", 407 .of_match = of_match_ptr("LDO3"), 408 .regulators_node = of_match_ptr("regulators"), 409 .id = PCA9450_LDO3, 410 .ops = &pca9450_ldo_regulator_ops, 411 .type = REGULATOR_VOLTAGE, 412 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM, 413 .linear_ranges = pca9450_ldo34_volts, 414 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 415 .vsel_reg = PCA9450_REG_LDO3CTRL, 416 .vsel_mask = LDO3OUT_MASK, 417 .enable_reg = PCA9450_REG_LDO3CTRL, 418 .enable_mask = LDO3_EN_MASK, 419 .owner = THIS_MODULE, 420 }, 421 }, 422 { 423 .desc = { 424 .name = "ldo4", 425 .of_match = of_match_ptr("LDO4"), 426 .regulators_node = of_match_ptr("regulators"), 427 .id = PCA9450_LDO4, 428 .ops = &pca9450_ldo_regulator_ops, 429 .type = REGULATOR_VOLTAGE, 430 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM, 431 .linear_ranges = pca9450_ldo34_volts, 432 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 433 .vsel_reg = PCA9450_REG_LDO4CTRL, 434 .vsel_mask = LDO4OUT_MASK, 435 .enable_reg = PCA9450_REG_LDO4CTRL, 436 .enable_mask = LDO4_EN_MASK, 437 .owner = THIS_MODULE, 438 }, 439 }, 440 { 441 .desc = { 442 .name = "ldo5", 443 .of_match = of_match_ptr("LDO5"), 444 .regulators_node = of_match_ptr("regulators"), 445 .id = PCA9450_LDO5, 446 .ops = &pca9450_ldo_regulator_ops, 447 .type = REGULATOR_VOLTAGE, 448 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM, 449 .linear_ranges = pca9450_ldo5_volts, 450 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts), 451 .vsel_reg = PCA9450_REG_LDO5CTRL_H, 452 .vsel_mask = LDO5HOUT_MASK, 453 .enable_reg = PCA9450_REG_LDO5CTRL_H, 454 .enable_mask = LDO5H_EN_MASK, 455 .owner = THIS_MODULE, 456 }, 457 }, 458 }; 459 460 /* 461 * Buck3 removed on PCA9450B and connected with Buck1 internal for dual phase 462 * on PCA9450C as no Buck3. 463 */ 464 static const struct pca9450_regulator_desc pca9450bc_regulators[] = { 465 { 466 .desc = { 467 .name = "buck1", 468 .of_match = of_match_ptr("BUCK1"), 469 .regulators_node = of_match_ptr("regulators"), 470 .id = PCA9450_BUCK1, 471 .ops = &pca9450_dvs_buck_regulator_ops, 472 .type = REGULATOR_VOLTAGE, 473 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM, 474 .linear_ranges = pca9450_dvs_buck_volts, 475 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 476 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0, 477 .vsel_mask = BUCK1OUT_DVS0_MASK, 478 .enable_reg = PCA9450_REG_BUCK1CTRL, 479 .enable_mask = BUCK1_ENMODE_MASK, 480 .owner = THIS_MODULE, 481 .of_parse_cb = pca9450_set_dvs_levels, 482 }, 483 .dvs = { 484 .run_reg = PCA9450_REG_BUCK1OUT_DVS0, 485 .run_mask = BUCK1OUT_DVS0_MASK, 486 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1, 487 .standby_mask = BUCK1OUT_DVS1_MASK, 488 }, 489 }, 490 { 491 .desc = { 492 .name = "buck2", 493 .of_match = of_match_ptr("BUCK2"), 494 .regulators_node = of_match_ptr("regulators"), 495 .id = PCA9450_BUCK2, 496 .ops = &pca9450_dvs_buck_regulator_ops, 497 .type = REGULATOR_VOLTAGE, 498 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM, 499 .linear_ranges = pca9450_dvs_buck_volts, 500 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 501 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0, 502 .vsel_mask = BUCK2OUT_DVS0_MASK, 503 .enable_reg = PCA9450_REG_BUCK2CTRL, 504 .enable_mask = BUCK1_ENMODE_MASK, 505 .owner = THIS_MODULE, 506 .of_parse_cb = pca9450_set_dvs_levels, 507 }, 508 .dvs = { 509 .run_reg = PCA9450_REG_BUCK2OUT_DVS0, 510 .run_mask = BUCK2OUT_DVS0_MASK, 511 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1, 512 .standby_mask = BUCK2OUT_DVS1_MASK, 513 }, 514 }, 515 { 516 .desc = { 517 .name = "buck4", 518 .of_match = of_match_ptr("BUCK4"), 519 .regulators_node = of_match_ptr("regulators"), 520 .id = PCA9450_BUCK4, 521 .ops = &pca9450_buck_regulator_ops, 522 .type = REGULATOR_VOLTAGE, 523 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM, 524 .linear_ranges = pca9450_buck_volts, 525 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 526 .vsel_reg = PCA9450_REG_BUCK4OUT, 527 .vsel_mask = BUCK4OUT_MASK, 528 .enable_reg = PCA9450_REG_BUCK4CTRL, 529 .enable_mask = BUCK4_ENMODE_MASK, 530 .owner = THIS_MODULE, 531 }, 532 }, 533 { 534 .desc = { 535 .name = "buck5", 536 .of_match = of_match_ptr("BUCK5"), 537 .regulators_node = of_match_ptr("regulators"), 538 .id = PCA9450_BUCK5, 539 .ops = &pca9450_buck_regulator_ops, 540 .type = REGULATOR_VOLTAGE, 541 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM, 542 .linear_ranges = pca9450_buck_volts, 543 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 544 .vsel_reg = PCA9450_REG_BUCK5OUT, 545 .vsel_mask = BUCK5OUT_MASK, 546 .enable_reg = PCA9450_REG_BUCK5CTRL, 547 .enable_mask = BUCK5_ENMODE_MASK, 548 .owner = THIS_MODULE, 549 }, 550 }, 551 { 552 .desc = { 553 .name = "buck6", 554 .of_match = of_match_ptr("BUCK6"), 555 .regulators_node = of_match_ptr("regulators"), 556 .id = PCA9450_BUCK6, 557 .ops = &pca9450_buck_regulator_ops, 558 .type = REGULATOR_VOLTAGE, 559 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM, 560 .linear_ranges = pca9450_buck_volts, 561 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 562 .vsel_reg = PCA9450_REG_BUCK6OUT, 563 .vsel_mask = BUCK6OUT_MASK, 564 .enable_reg = PCA9450_REG_BUCK6CTRL, 565 .enable_mask = BUCK6_ENMODE_MASK, 566 .owner = THIS_MODULE, 567 }, 568 }, 569 { 570 .desc = { 571 .name = "ldo1", 572 .of_match = of_match_ptr("LDO1"), 573 .regulators_node = of_match_ptr("regulators"), 574 .id = PCA9450_LDO1, 575 .ops = &pca9450_ldo_regulator_ops, 576 .type = REGULATOR_VOLTAGE, 577 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM, 578 .linear_ranges = pca9450_ldo1_volts, 579 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts), 580 .vsel_reg = PCA9450_REG_LDO1CTRL, 581 .vsel_mask = LDO1OUT_MASK, 582 .enable_reg = PCA9450_REG_LDO1CTRL, 583 .enable_mask = LDO1_EN_MASK, 584 .owner = THIS_MODULE, 585 }, 586 }, 587 { 588 .desc = { 589 .name = "ldo2", 590 .of_match = of_match_ptr("LDO2"), 591 .regulators_node = of_match_ptr("regulators"), 592 .id = PCA9450_LDO2, 593 .ops = &pca9450_ldo_regulator_ops, 594 .type = REGULATOR_VOLTAGE, 595 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM, 596 .linear_ranges = pca9450_ldo2_volts, 597 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts), 598 .vsel_reg = PCA9450_REG_LDO2CTRL, 599 .vsel_mask = LDO2OUT_MASK, 600 .enable_reg = PCA9450_REG_LDO2CTRL, 601 .enable_mask = LDO2_EN_MASK, 602 .owner = THIS_MODULE, 603 }, 604 }, 605 { 606 .desc = { 607 .name = "ldo3", 608 .of_match = of_match_ptr("LDO3"), 609 .regulators_node = of_match_ptr("regulators"), 610 .id = PCA9450_LDO3, 611 .ops = &pca9450_ldo_regulator_ops, 612 .type = REGULATOR_VOLTAGE, 613 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM, 614 .linear_ranges = pca9450_ldo34_volts, 615 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 616 .vsel_reg = PCA9450_REG_LDO3CTRL, 617 .vsel_mask = LDO3OUT_MASK, 618 .enable_reg = PCA9450_REG_LDO3CTRL, 619 .enable_mask = LDO3_EN_MASK, 620 .owner = THIS_MODULE, 621 }, 622 }, 623 { 624 .desc = { 625 .name = "ldo4", 626 .of_match = of_match_ptr("LDO4"), 627 .regulators_node = of_match_ptr("regulators"), 628 .id = PCA9450_LDO4, 629 .ops = &pca9450_ldo_regulator_ops, 630 .type = REGULATOR_VOLTAGE, 631 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM, 632 .linear_ranges = pca9450_ldo34_volts, 633 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 634 .vsel_reg = PCA9450_REG_LDO4CTRL, 635 .vsel_mask = LDO4OUT_MASK, 636 .enable_reg = PCA9450_REG_LDO4CTRL, 637 .enable_mask = LDO4_EN_MASK, 638 .owner = THIS_MODULE, 639 }, 640 }, 641 { 642 .desc = { 643 .name = "ldo5", 644 .of_match = of_match_ptr("LDO5"), 645 .regulators_node = of_match_ptr("regulators"), 646 .id = PCA9450_LDO5, 647 .ops = &pca9450_ldo_regulator_ops, 648 .type = REGULATOR_VOLTAGE, 649 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM, 650 .linear_ranges = pca9450_ldo5_volts, 651 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts), 652 .vsel_reg = PCA9450_REG_LDO5CTRL_H, 653 .vsel_mask = LDO5HOUT_MASK, 654 .enable_reg = PCA9450_REG_LDO5CTRL_H, 655 .enable_mask = LDO5H_EN_MASK, 656 .owner = THIS_MODULE, 657 }, 658 }, 659 }; 660 661 static irqreturn_t pca9450_irq_handler(int irq, void *data) 662 { 663 struct pca9450 *pca9450 = data; 664 struct regmap *regmap = pca9450->regmap; 665 unsigned int status; 666 int ret; 667 668 ret = regmap_read(regmap, PCA9450_REG_INT1, &status); 669 if (ret < 0) { 670 dev_err(pca9450->dev, 671 "Failed to read INT1(%d)\n", ret); 672 return IRQ_NONE; 673 } 674 675 if (status & IRQ_PWRON) 676 dev_warn(pca9450->dev, "PWRON interrupt.\n"); 677 678 if (status & IRQ_WDOGB) 679 dev_warn(pca9450->dev, "WDOGB interrupt.\n"); 680 681 if (status & IRQ_VR_FLT1) 682 dev_warn(pca9450->dev, "VRFLT1 interrupt.\n"); 683 684 if (status & IRQ_VR_FLT2) 685 dev_warn(pca9450->dev, "VRFLT2 interrupt.\n"); 686 687 if (status & IRQ_LOWVSYS) 688 dev_warn(pca9450->dev, "LOWVSYS interrupt.\n"); 689 690 if (status & IRQ_THERM_105) 691 dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n"); 692 693 if (status & IRQ_THERM_125) 694 dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n"); 695 696 return IRQ_HANDLED; 697 } 698 699 static int pca9450_i2c_probe(struct i2c_client *i2c, 700 const struct i2c_device_id *id) 701 { 702 enum pca9450_chip_type type = (unsigned int)(uintptr_t) 703 of_device_get_match_data(&i2c->dev); 704 const struct pca9450_regulator_desc *regulator_desc; 705 struct regulator_config config = { }; 706 struct pca9450 *pca9450; 707 unsigned int device_id, i; 708 int ret; 709 710 if (!i2c->irq) { 711 dev_err(&i2c->dev, "No IRQ configured?\n"); 712 return -EINVAL; 713 } 714 715 pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL); 716 if (!pca9450) 717 return -ENOMEM; 718 719 switch (type) { 720 case PCA9450_TYPE_PCA9450A: 721 regulator_desc = pca9450a_regulators; 722 pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators); 723 break; 724 case PCA9450_TYPE_PCA9450BC: 725 regulator_desc = pca9450bc_regulators; 726 pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators); 727 break; 728 default: 729 dev_err(&i2c->dev, "Unknown device type"); 730 return -EINVAL; 731 } 732 733 pca9450->irq = i2c->irq; 734 pca9450->type = type; 735 pca9450->dev = &i2c->dev; 736 737 dev_set_drvdata(&i2c->dev, pca9450); 738 739 pca9450->regmap = devm_regmap_init_i2c(i2c, 740 &pca9450_regmap_config); 741 if (IS_ERR(pca9450->regmap)) { 742 dev_err(&i2c->dev, "regmap initialization failed\n"); 743 return PTR_ERR(pca9450->regmap); 744 } 745 746 ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id); 747 if (ret) { 748 dev_err(&i2c->dev, "Read device id error\n"); 749 return ret; 750 } 751 752 /* Check your board and dts for match the right pmic */ 753 if (((device_id >> 4) != 0x1 && type == PCA9450_TYPE_PCA9450A) || 754 ((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC)) { 755 dev_err(&i2c->dev, "Device id(%x) mismatched\n", 756 device_id >> 4); 757 return -EINVAL; 758 } 759 760 for (i = 0; i < pca9450->rcnt; i++) { 761 const struct regulator_desc *desc; 762 struct regulator_dev *rdev; 763 const struct pca9450_regulator_desc *r; 764 765 r = ®ulator_desc[i]; 766 desc = &r->desc; 767 768 config.regmap = pca9450->regmap; 769 config.dev = pca9450->dev; 770 771 rdev = devm_regulator_register(pca9450->dev, desc, &config); 772 if (IS_ERR(rdev)) { 773 ret = PTR_ERR(rdev); 774 dev_err(pca9450->dev, 775 "Failed to register regulator(%s): %d\n", 776 desc->name, ret); 777 return ret; 778 } 779 } 780 781 ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL, 782 pca9450_irq_handler, 783 (IRQF_TRIGGER_FALLING | IRQF_ONESHOT), 784 "pca9450-irq", pca9450); 785 if (ret != 0) { 786 dev_err(pca9450->dev, "Failed to request IRQ: %d\n", 787 pca9450->irq); 788 return ret; 789 } 790 /* Unmask all interrupt except PWRON/WDOG/RSVD */ 791 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK, 792 IRQ_VR_FLT1 | IRQ_VR_FLT2 | IRQ_LOWVSYS | 793 IRQ_THERM_105 | IRQ_THERM_125, 794 IRQ_PWRON | IRQ_WDOGB | IRQ_RSVD); 795 if (ret) { 796 dev_err(&i2c->dev, "Unmask irq error\n"); 797 return ret; 798 } 799 800 /* Set reset behavior on assertion of WDOG_B signal */ 801 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_RESET_CTRL, 802 WDOG_B_CFG_MASK, WDOG_B_CFG_COLD_LDO12); 803 if (ret) { 804 dev_err(&i2c->dev, "Failed to set WDOG_B reset behavior\n"); 805 return ret; 806 } 807 808 /* 809 * The driver uses the LDO5CTRL_H register to control the LDO5 regulator. 810 * This is only valid if the SD_VSEL input of the PMIC is high. Let's 811 * check if the pin is available as GPIO and set it to high. 812 */ 813 pca9450->sd_vsel_gpio = gpiod_get_optional(pca9450->dev, "sd-vsel", GPIOD_OUT_HIGH); 814 815 if (IS_ERR(pca9450->sd_vsel_gpio)) { 816 dev_err(&i2c->dev, "Failed to get SD_VSEL GPIO\n"); 817 return ret; 818 } 819 820 dev_info(&i2c->dev, "%s probed.\n", 821 type == PCA9450_TYPE_PCA9450A ? "pca9450a" : "pca9450bc"); 822 823 return 0; 824 } 825 826 static const struct of_device_id pca9450_of_match[] = { 827 { 828 .compatible = "nxp,pca9450a", 829 .data = (void *)PCA9450_TYPE_PCA9450A, 830 }, 831 { 832 .compatible = "nxp,pca9450b", 833 .data = (void *)PCA9450_TYPE_PCA9450BC, 834 }, 835 { 836 .compatible = "nxp,pca9450c", 837 .data = (void *)PCA9450_TYPE_PCA9450BC, 838 }, 839 { } 840 }; 841 MODULE_DEVICE_TABLE(of, pca9450_of_match); 842 843 static struct i2c_driver pca9450_i2c_driver = { 844 .driver = { 845 .name = "nxp-pca9450", 846 .of_match_table = pca9450_of_match, 847 }, 848 .probe = pca9450_i2c_probe, 849 }; 850 851 module_i2c_driver(pca9450_i2c_driver); 852 853 MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>"); 854 MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver"); 855 MODULE_LICENSE("GPL"); 856