pca9450-regulator.c (24942B)
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 21struct 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 28struct pca9450_regulator_desc { 29 struct regulator_desc desc; 30 const struct pc9450_dvs_config dvs; 31}; 32 33struct 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 42static const struct regmap_range pca9450_status_range = { 43 .range_min = PCA9450_REG_INT1, 44 .range_max = PCA9450_REG_PWRON_STAT, 45}; 46 47static const struct regmap_access_table pca9450_volatile_regs = { 48 .yes_ranges = &pca9450_status_range, 49 .n_yes_ranges = 1, 50}; 51 52static 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 */ 68static const unsigned int pca9450_dvs_buck_ramp_table[] = { 69 25000, 12500, 6250, 3125 70}; 71 72static const struct regulator_ops pca9450_dvs_buck_regulator_ops = { 73 .enable = regulator_enable_regmap, 74 .disable = regulator_disable_regmap, 75 .is_enabled = regulator_is_enabled_regmap, 76 .list_voltage = regulator_list_voltage_linear_range, 77 .set_voltage_sel = regulator_set_voltage_sel_regmap, 78 .get_voltage_sel = regulator_get_voltage_sel_regmap, 79 .set_voltage_time_sel = regulator_set_voltage_time_sel, 80 .set_ramp_delay = regulator_set_ramp_delay_regmap, 81}; 82 83static const struct regulator_ops pca9450_buck_regulator_ops = { 84 .enable = regulator_enable_regmap, 85 .disable = regulator_disable_regmap, 86 .is_enabled = regulator_is_enabled_regmap, 87 .list_voltage = regulator_list_voltage_linear_range, 88 .set_voltage_sel = regulator_set_voltage_sel_regmap, 89 .get_voltage_sel = regulator_get_voltage_sel_regmap, 90 .set_voltage_time_sel = regulator_set_voltage_time_sel, 91}; 92 93static const struct regulator_ops pca9450_ldo_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}; 101 102/* 103 * BUCK1/2/3 104 * 0.60 to 2.1875V (12.5mV step) 105 */ 106static const struct linear_range pca9450_dvs_buck_volts[] = { 107 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x7F, 12500), 108}; 109 110/* 111 * BUCK4/5/6 112 * 0.6V to 3.4V (25mV step) 113 */ 114static const struct linear_range pca9450_buck_volts[] = { 115 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x70, 25000), 116 REGULATOR_LINEAR_RANGE(3400000, 0x71, 0x7F, 0), 117}; 118 119/* 120 * LDO1 121 * 1.6 to 3.3V () 122 */ 123static const struct linear_range pca9450_ldo1_volts[] = { 124 REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000), 125 REGULATOR_LINEAR_RANGE(3000000, 0x04, 0x07, 100000), 126}; 127 128/* 129 * LDO2 130 * 0.8 to 1.15V (50mV step) 131 */ 132static const struct linear_range pca9450_ldo2_volts[] = { 133 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x07, 50000), 134}; 135 136/* 137 * LDO3/4 138 * 0.8 to 3.3V (100mV step) 139 */ 140static const struct linear_range pca9450_ldo34_volts[] = { 141 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x19, 100000), 142 REGULATOR_LINEAR_RANGE(3300000, 0x1A, 0x1F, 0), 143}; 144 145/* 146 * LDO5 147 * 1.8 to 3.3V (100mV step) 148 */ 149static const struct linear_range pca9450_ldo5_volts[] = { 150 REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000), 151}; 152 153static int buck_set_dvs(const struct regulator_desc *desc, 154 struct device_node *np, struct regmap *regmap, 155 char *prop, unsigned int reg, unsigned int mask) 156{ 157 int ret, i; 158 uint32_t uv; 159 160 ret = of_property_read_u32(np, prop, &uv); 161 if (ret == -EINVAL) 162 return 0; 163 else if (ret) 164 return ret; 165 166 for (i = 0; i < desc->n_voltages; i++) { 167 ret = regulator_desc_list_voltage_linear_range(desc, i); 168 if (ret < 0) 169 continue; 170 if (ret == uv) { 171 i <<= ffs(desc->vsel_mask) - 1; 172 ret = regmap_update_bits(regmap, reg, mask, i); 173 break; 174 } 175 } 176 177 if (ret == 0) { 178 struct pca9450_regulator_desc *regulator = container_of(desc, 179 struct pca9450_regulator_desc, desc); 180 181 /* Enable DVS control through PMIC_STBY_REQ for this BUCK */ 182 ret = regmap_update_bits(regmap, regulator->desc.enable_reg, 183 BUCK1_DVS_CTRL, BUCK1_DVS_CTRL); 184 } 185 return ret; 186} 187 188static int pca9450_set_dvs_levels(struct device_node *np, 189 const struct regulator_desc *desc, 190 struct regulator_config *cfg) 191{ 192 struct pca9450_regulator_desc *data = container_of(desc, 193 struct pca9450_regulator_desc, desc); 194 const struct pc9450_dvs_config *dvs = &data->dvs; 195 unsigned int reg, mask; 196 char *prop; 197 int i, ret = 0; 198 199 for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) { 200 switch (i) { 201 case PCA9450_DVS_LEVEL_RUN: 202 prop = "nxp,dvs-run-voltage"; 203 reg = dvs->run_reg; 204 mask = dvs->run_mask; 205 break; 206 case PCA9450_DVS_LEVEL_STANDBY: 207 prop = "nxp,dvs-standby-voltage"; 208 reg = dvs->standby_reg; 209 mask = dvs->standby_mask; 210 break; 211 default: 212 return -EINVAL; 213 } 214 215 ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask); 216 if (ret) 217 break; 218 } 219 220 return ret; 221} 222 223static const struct pca9450_regulator_desc pca9450a_regulators[] = { 224 { 225 .desc = { 226 .name = "buck1", 227 .of_match = of_match_ptr("BUCK1"), 228 .regulators_node = of_match_ptr("regulators"), 229 .id = PCA9450_BUCK1, 230 .ops = &pca9450_dvs_buck_regulator_ops, 231 .type = REGULATOR_VOLTAGE, 232 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM, 233 .linear_ranges = pca9450_dvs_buck_volts, 234 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 235 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0, 236 .vsel_mask = BUCK1OUT_DVS0_MASK, 237 .enable_reg = PCA9450_REG_BUCK1CTRL, 238 .enable_mask = BUCK1_ENMODE_MASK, 239 .ramp_reg = PCA9450_REG_BUCK1CTRL, 240 .ramp_mask = BUCK1_RAMP_MASK, 241 .ramp_delay_table = pca9450_dvs_buck_ramp_table, 242 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), 243 .owner = THIS_MODULE, 244 .of_parse_cb = pca9450_set_dvs_levels, 245 }, 246 .dvs = { 247 .run_reg = PCA9450_REG_BUCK1OUT_DVS0, 248 .run_mask = BUCK1OUT_DVS0_MASK, 249 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1, 250 .standby_mask = BUCK1OUT_DVS1_MASK, 251 }, 252 }, 253 { 254 .desc = { 255 .name = "buck2", 256 .of_match = of_match_ptr("BUCK2"), 257 .regulators_node = of_match_ptr("regulators"), 258 .id = PCA9450_BUCK2, 259 .ops = &pca9450_dvs_buck_regulator_ops, 260 .type = REGULATOR_VOLTAGE, 261 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM, 262 .linear_ranges = pca9450_dvs_buck_volts, 263 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 264 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0, 265 .vsel_mask = BUCK2OUT_DVS0_MASK, 266 .enable_reg = PCA9450_REG_BUCK2CTRL, 267 .enable_mask = BUCK1_ENMODE_MASK, 268 .ramp_reg = PCA9450_REG_BUCK2CTRL, 269 .ramp_mask = BUCK2_RAMP_MASK, 270 .ramp_delay_table = pca9450_dvs_buck_ramp_table, 271 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), 272 .owner = THIS_MODULE, 273 .of_parse_cb = pca9450_set_dvs_levels, 274 }, 275 .dvs = { 276 .run_reg = PCA9450_REG_BUCK2OUT_DVS0, 277 .run_mask = BUCK2OUT_DVS0_MASK, 278 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1, 279 .standby_mask = BUCK2OUT_DVS1_MASK, 280 }, 281 }, 282 { 283 .desc = { 284 .name = "buck3", 285 .of_match = of_match_ptr("BUCK3"), 286 .regulators_node = of_match_ptr("regulators"), 287 .id = PCA9450_BUCK3, 288 .ops = &pca9450_dvs_buck_regulator_ops, 289 .type = REGULATOR_VOLTAGE, 290 .n_voltages = PCA9450_BUCK3_VOLTAGE_NUM, 291 .linear_ranges = pca9450_dvs_buck_volts, 292 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 293 .vsel_reg = PCA9450_REG_BUCK3OUT_DVS0, 294 .vsel_mask = BUCK3OUT_DVS0_MASK, 295 .enable_reg = PCA9450_REG_BUCK3CTRL, 296 .enable_mask = BUCK3_ENMODE_MASK, 297 .ramp_reg = PCA9450_REG_BUCK3CTRL, 298 .ramp_mask = BUCK3_RAMP_MASK, 299 .ramp_delay_table = pca9450_dvs_buck_ramp_table, 300 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), 301 .owner = THIS_MODULE, 302 .of_parse_cb = pca9450_set_dvs_levels, 303 }, 304 .dvs = { 305 .run_reg = PCA9450_REG_BUCK3OUT_DVS0, 306 .run_mask = BUCK3OUT_DVS0_MASK, 307 .standby_reg = PCA9450_REG_BUCK3OUT_DVS1, 308 .standby_mask = BUCK3OUT_DVS1_MASK, 309 }, 310 }, 311 { 312 .desc = { 313 .name = "buck4", 314 .of_match = of_match_ptr("BUCK4"), 315 .regulators_node = of_match_ptr("regulators"), 316 .id = PCA9450_BUCK4, 317 .ops = &pca9450_buck_regulator_ops, 318 .type = REGULATOR_VOLTAGE, 319 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM, 320 .linear_ranges = pca9450_buck_volts, 321 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 322 .vsel_reg = PCA9450_REG_BUCK4OUT, 323 .vsel_mask = BUCK4OUT_MASK, 324 .enable_reg = PCA9450_REG_BUCK4CTRL, 325 .enable_mask = BUCK4_ENMODE_MASK, 326 .owner = THIS_MODULE, 327 }, 328 }, 329 { 330 .desc = { 331 .name = "buck5", 332 .of_match = of_match_ptr("BUCK5"), 333 .regulators_node = of_match_ptr("regulators"), 334 .id = PCA9450_BUCK5, 335 .ops = &pca9450_buck_regulator_ops, 336 .type = REGULATOR_VOLTAGE, 337 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM, 338 .linear_ranges = pca9450_buck_volts, 339 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 340 .vsel_reg = PCA9450_REG_BUCK5OUT, 341 .vsel_mask = BUCK5OUT_MASK, 342 .enable_reg = PCA9450_REG_BUCK5CTRL, 343 .enable_mask = BUCK5_ENMODE_MASK, 344 .owner = THIS_MODULE, 345 }, 346 }, 347 { 348 .desc = { 349 .name = "buck6", 350 .of_match = of_match_ptr("BUCK6"), 351 .regulators_node = of_match_ptr("regulators"), 352 .id = PCA9450_BUCK6, 353 .ops = &pca9450_buck_regulator_ops, 354 .type = REGULATOR_VOLTAGE, 355 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM, 356 .linear_ranges = pca9450_buck_volts, 357 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 358 .vsel_reg = PCA9450_REG_BUCK6OUT, 359 .vsel_mask = BUCK6OUT_MASK, 360 .enable_reg = PCA9450_REG_BUCK6CTRL, 361 .enable_mask = BUCK6_ENMODE_MASK, 362 .owner = THIS_MODULE, 363 }, 364 }, 365 { 366 .desc = { 367 .name = "ldo1", 368 .of_match = of_match_ptr("LDO1"), 369 .regulators_node = of_match_ptr("regulators"), 370 .id = PCA9450_LDO1, 371 .ops = &pca9450_ldo_regulator_ops, 372 .type = REGULATOR_VOLTAGE, 373 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM, 374 .linear_ranges = pca9450_ldo1_volts, 375 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts), 376 .vsel_reg = PCA9450_REG_LDO1CTRL, 377 .vsel_mask = LDO1OUT_MASK, 378 .enable_reg = PCA9450_REG_LDO1CTRL, 379 .enable_mask = LDO1_EN_MASK, 380 .owner = THIS_MODULE, 381 }, 382 }, 383 { 384 .desc = { 385 .name = "ldo2", 386 .of_match = of_match_ptr("LDO2"), 387 .regulators_node = of_match_ptr("regulators"), 388 .id = PCA9450_LDO2, 389 .ops = &pca9450_ldo_regulator_ops, 390 .type = REGULATOR_VOLTAGE, 391 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM, 392 .linear_ranges = pca9450_ldo2_volts, 393 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts), 394 .vsel_reg = PCA9450_REG_LDO2CTRL, 395 .vsel_mask = LDO2OUT_MASK, 396 .enable_reg = PCA9450_REG_LDO2CTRL, 397 .enable_mask = LDO2_EN_MASK, 398 .owner = THIS_MODULE, 399 }, 400 }, 401 { 402 .desc = { 403 .name = "ldo3", 404 .of_match = of_match_ptr("LDO3"), 405 .regulators_node = of_match_ptr("regulators"), 406 .id = PCA9450_LDO3, 407 .ops = &pca9450_ldo_regulator_ops, 408 .type = REGULATOR_VOLTAGE, 409 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM, 410 .linear_ranges = pca9450_ldo34_volts, 411 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 412 .vsel_reg = PCA9450_REG_LDO3CTRL, 413 .vsel_mask = LDO3OUT_MASK, 414 .enable_reg = PCA9450_REG_LDO3CTRL, 415 .enable_mask = LDO3_EN_MASK, 416 .owner = THIS_MODULE, 417 }, 418 }, 419 { 420 .desc = { 421 .name = "ldo4", 422 .of_match = of_match_ptr("LDO4"), 423 .regulators_node = of_match_ptr("regulators"), 424 .id = PCA9450_LDO4, 425 .ops = &pca9450_ldo_regulator_ops, 426 .type = REGULATOR_VOLTAGE, 427 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM, 428 .linear_ranges = pca9450_ldo34_volts, 429 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 430 .vsel_reg = PCA9450_REG_LDO4CTRL, 431 .vsel_mask = LDO4OUT_MASK, 432 .enable_reg = PCA9450_REG_LDO4CTRL, 433 .enable_mask = LDO4_EN_MASK, 434 .owner = THIS_MODULE, 435 }, 436 }, 437 { 438 .desc = { 439 .name = "ldo5", 440 .of_match = of_match_ptr("LDO5"), 441 .regulators_node = of_match_ptr("regulators"), 442 .id = PCA9450_LDO5, 443 .ops = &pca9450_ldo_regulator_ops, 444 .type = REGULATOR_VOLTAGE, 445 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM, 446 .linear_ranges = pca9450_ldo5_volts, 447 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts), 448 .vsel_reg = PCA9450_REG_LDO5CTRL_H, 449 .vsel_mask = LDO5HOUT_MASK, 450 .enable_reg = PCA9450_REG_LDO5CTRL_H, 451 .enable_mask = LDO5H_EN_MASK, 452 .owner = THIS_MODULE, 453 }, 454 }, 455}; 456 457/* 458 * Buck3 removed on PCA9450B and connected with Buck1 internal for dual phase 459 * on PCA9450C as no Buck3. 460 */ 461static const struct pca9450_regulator_desc pca9450bc_regulators[] = { 462 { 463 .desc = { 464 .name = "buck1", 465 .of_match = of_match_ptr("BUCK1"), 466 .regulators_node = of_match_ptr("regulators"), 467 .id = PCA9450_BUCK1, 468 .ops = &pca9450_dvs_buck_regulator_ops, 469 .type = REGULATOR_VOLTAGE, 470 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM, 471 .linear_ranges = pca9450_dvs_buck_volts, 472 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 473 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0, 474 .vsel_mask = BUCK1OUT_DVS0_MASK, 475 .enable_reg = PCA9450_REG_BUCK1CTRL, 476 .enable_mask = BUCK1_ENMODE_MASK, 477 .ramp_reg = PCA9450_REG_BUCK1CTRL, 478 .ramp_mask = BUCK1_RAMP_MASK, 479 .ramp_delay_table = pca9450_dvs_buck_ramp_table, 480 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), 481 .owner = THIS_MODULE, 482 .of_parse_cb = pca9450_set_dvs_levels, 483 }, 484 .dvs = { 485 .run_reg = PCA9450_REG_BUCK1OUT_DVS0, 486 .run_mask = BUCK1OUT_DVS0_MASK, 487 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1, 488 .standby_mask = BUCK1OUT_DVS1_MASK, 489 }, 490 }, 491 { 492 .desc = { 493 .name = "buck2", 494 .of_match = of_match_ptr("BUCK2"), 495 .regulators_node = of_match_ptr("regulators"), 496 .id = PCA9450_BUCK2, 497 .ops = &pca9450_dvs_buck_regulator_ops, 498 .type = REGULATOR_VOLTAGE, 499 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM, 500 .linear_ranges = pca9450_dvs_buck_volts, 501 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 502 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0, 503 .vsel_mask = BUCK2OUT_DVS0_MASK, 504 .enable_reg = PCA9450_REG_BUCK2CTRL, 505 .enable_mask = BUCK1_ENMODE_MASK, 506 .ramp_reg = PCA9450_REG_BUCK2CTRL, 507 .ramp_mask = BUCK2_RAMP_MASK, 508 .ramp_delay_table = pca9450_dvs_buck_ramp_table, 509 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), 510 .owner = THIS_MODULE, 511 .of_parse_cb = pca9450_set_dvs_levels, 512 }, 513 .dvs = { 514 .run_reg = PCA9450_REG_BUCK2OUT_DVS0, 515 .run_mask = BUCK2OUT_DVS0_MASK, 516 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1, 517 .standby_mask = BUCK2OUT_DVS1_MASK, 518 }, 519 }, 520 { 521 .desc = { 522 .name = "buck4", 523 .of_match = of_match_ptr("BUCK4"), 524 .regulators_node = of_match_ptr("regulators"), 525 .id = PCA9450_BUCK4, 526 .ops = &pca9450_buck_regulator_ops, 527 .type = REGULATOR_VOLTAGE, 528 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM, 529 .linear_ranges = pca9450_buck_volts, 530 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 531 .vsel_reg = PCA9450_REG_BUCK4OUT, 532 .vsel_mask = BUCK4OUT_MASK, 533 .enable_reg = PCA9450_REG_BUCK4CTRL, 534 .enable_mask = BUCK4_ENMODE_MASK, 535 .owner = THIS_MODULE, 536 }, 537 }, 538 { 539 .desc = { 540 .name = "buck5", 541 .of_match = of_match_ptr("BUCK5"), 542 .regulators_node = of_match_ptr("regulators"), 543 .id = PCA9450_BUCK5, 544 .ops = &pca9450_buck_regulator_ops, 545 .type = REGULATOR_VOLTAGE, 546 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM, 547 .linear_ranges = pca9450_buck_volts, 548 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 549 .vsel_reg = PCA9450_REG_BUCK5OUT, 550 .vsel_mask = BUCK5OUT_MASK, 551 .enable_reg = PCA9450_REG_BUCK5CTRL, 552 .enable_mask = BUCK5_ENMODE_MASK, 553 .owner = THIS_MODULE, 554 }, 555 }, 556 { 557 .desc = { 558 .name = "buck6", 559 .of_match = of_match_ptr("BUCK6"), 560 .regulators_node = of_match_ptr("regulators"), 561 .id = PCA9450_BUCK6, 562 .ops = &pca9450_buck_regulator_ops, 563 .type = REGULATOR_VOLTAGE, 564 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM, 565 .linear_ranges = pca9450_buck_volts, 566 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 567 .vsel_reg = PCA9450_REG_BUCK6OUT, 568 .vsel_mask = BUCK6OUT_MASK, 569 .enable_reg = PCA9450_REG_BUCK6CTRL, 570 .enable_mask = BUCK6_ENMODE_MASK, 571 .owner = THIS_MODULE, 572 }, 573 }, 574 { 575 .desc = { 576 .name = "ldo1", 577 .of_match = of_match_ptr("LDO1"), 578 .regulators_node = of_match_ptr("regulators"), 579 .id = PCA9450_LDO1, 580 .ops = &pca9450_ldo_regulator_ops, 581 .type = REGULATOR_VOLTAGE, 582 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM, 583 .linear_ranges = pca9450_ldo1_volts, 584 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts), 585 .vsel_reg = PCA9450_REG_LDO1CTRL, 586 .vsel_mask = LDO1OUT_MASK, 587 .enable_reg = PCA9450_REG_LDO1CTRL, 588 .enable_mask = LDO1_EN_MASK, 589 .owner = THIS_MODULE, 590 }, 591 }, 592 { 593 .desc = { 594 .name = "ldo2", 595 .of_match = of_match_ptr("LDO2"), 596 .regulators_node = of_match_ptr("regulators"), 597 .id = PCA9450_LDO2, 598 .ops = &pca9450_ldo_regulator_ops, 599 .type = REGULATOR_VOLTAGE, 600 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM, 601 .linear_ranges = pca9450_ldo2_volts, 602 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts), 603 .vsel_reg = PCA9450_REG_LDO2CTRL, 604 .vsel_mask = LDO2OUT_MASK, 605 .enable_reg = PCA9450_REG_LDO2CTRL, 606 .enable_mask = LDO2_EN_MASK, 607 .owner = THIS_MODULE, 608 }, 609 }, 610 { 611 .desc = { 612 .name = "ldo3", 613 .of_match = of_match_ptr("LDO3"), 614 .regulators_node = of_match_ptr("regulators"), 615 .id = PCA9450_LDO3, 616 .ops = &pca9450_ldo_regulator_ops, 617 .type = REGULATOR_VOLTAGE, 618 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM, 619 .linear_ranges = pca9450_ldo34_volts, 620 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 621 .vsel_reg = PCA9450_REG_LDO3CTRL, 622 .vsel_mask = LDO3OUT_MASK, 623 .enable_reg = PCA9450_REG_LDO3CTRL, 624 .enable_mask = LDO3_EN_MASK, 625 .owner = THIS_MODULE, 626 }, 627 }, 628 { 629 .desc = { 630 .name = "ldo4", 631 .of_match = of_match_ptr("LDO4"), 632 .regulators_node = of_match_ptr("regulators"), 633 .id = PCA9450_LDO4, 634 .ops = &pca9450_ldo_regulator_ops, 635 .type = REGULATOR_VOLTAGE, 636 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM, 637 .linear_ranges = pca9450_ldo34_volts, 638 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 639 .vsel_reg = PCA9450_REG_LDO4CTRL, 640 .vsel_mask = LDO4OUT_MASK, 641 .enable_reg = PCA9450_REG_LDO4CTRL, 642 .enable_mask = LDO4_EN_MASK, 643 .owner = THIS_MODULE, 644 }, 645 }, 646 { 647 .desc = { 648 .name = "ldo5", 649 .of_match = of_match_ptr("LDO5"), 650 .regulators_node = of_match_ptr("regulators"), 651 .id = PCA9450_LDO5, 652 .ops = &pca9450_ldo_regulator_ops, 653 .type = REGULATOR_VOLTAGE, 654 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM, 655 .linear_ranges = pca9450_ldo5_volts, 656 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts), 657 .vsel_reg = PCA9450_REG_LDO5CTRL_H, 658 .vsel_mask = LDO5HOUT_MASK, 659 .enable_reg = PCA9450_REG_LDO5CTRL_H, 660 .enable_mask = LDO5H_EN_MASK, 661 .owner = THIS_MODULE, 662 }, 663 }, 664}; 665 666static irqreturn_t pca9450_irq_handler(int irq, void *data) 667{ 668 struct pca9450 *pca9450 = data; 669 struct regmap *regmap = pca9450->regmap; 670 unsigned int status; 671 int ret; 672 673 ret = regmap_read(regmap, PCA9450_REG_INT1, &status); 674 if (ret < 0) { 675 dev_err(pca9450->dev, 676 "Failed to read INT1(%d)\n", ret); 677 return IRQ_NONE; 678 } 679 680 if (status & IRQ_PWRON) 681 dev_warn(pca9450->dev, "PWRON interrupt.\n"); 682 683 if (status & IRQ_WDOGB) 684 dev_warn(pca9450->dev, "WDOGB interrupt.\n"); 685 686 if (status & IRQ_VR_FLT1) 687 dev_warn(pca9450->dev, "VRFLT1 interrupt.\n"); 688 689 if (status & IRQ_VR_FLT2) 690 dev_warn(pca9450->dev, "VRFLT2 interrupt.\n"); 691 692 if (status & IRQ_LOWVSYS) 693 dev_warn(pca9450->dev, "LOWVSYS interrupt.\n"); 694 695 if (status & IRQ_THERM_105) 696 dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n"); 697 698 if (status & IRQ_THERM_125) 699 dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n"); 700 701 return IRQ_HANDLED; 702} 703 704static int pca9450_i2c_probe(struct i2c_client *i2c, 705 const struct i2c_device_id *id) 706{ 707 enum pca9450_chip_type type = (unsigned int)(uintptr_t) 708 of_device_get_match_data(&i2c->dev); 709 const struct pca9450_regulator_desc *regulator_desc; 710 struct regulator_config config = { }; 711 struct pca9450 *pca9450; 712 unsigned int device_id, i; 713 unsigned int reset_ctrl; 714 int ret; 715 716 if (!i2c->irq) { 717 dev_err(&i2c->dev, "No IRQ configured?\n"); 718 return -EINVAL; 719 } 720 721 pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL); 722 if (!pca9450) 723 return -ENOMEM; 724 725 switch (type) { 726 case PCA9450_TYPE_PCA9450A: 727 regulator_desc = pca9450a_regulators; 728 pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators); 729 break; 730 case PCA9450_TYPE_PCA9450BC: 731 regulator_desc = pca9450bc_regulators; 732 pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators); 733 break; 734 default: 735 dev_err(&i2c->dev, "Unknown device type"); 736 return -EINVAL; 737 } 738 739 pca9450->irq = i2c->irq; 740 pca9450->type = type; 741 pca9450->dev = &i2c->dev; 742 743 dev_set_drvdata(&i2c->dev, pca9450); 744 745 pca9450->regmap = devm_regmap_init_i2c(i2c, 746 &pca9450_regmap_config); 747 if (IS_ERR(pca9450->regmap)) { 748 dev_err(&i2c->dev, "regmap initialization failed\n"); 749 return PTR_ERR(pca9450->regmap); 750 } 751 752 ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id); 753 if (ret) { 754 dev_err(&i2c->dev, "Read device id error\n"); 755 return ret; 756 } 757 758 /* Check your board and dts for match the right pmic */ 759 if (((device_id >> 4) != 0x1 && type == PCA9450_TYPE_PCA9450A) || 760 ((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC)) { 761 dev_err(&i2c->dev, "Device id(%x) mismatched\n", 762 device_id >> 4); 763 return -EINVAL; 764 } 765 766 for (i = 0; i < pca9450->rcnt; i++) { 767 const struct regulator_desc *desc; 768 struct regulator_dev *rdev; 769 const struct pca9450_regulator_desc *r; 770 771 r = ®ulator_desc[i]; 772 desc = &r->desc; 773 774 config.regmap = pca9450->regmap; 775 config.dev = pca9450->dev; 776 777 rdev = devm_regulator_register(pca9450->dev, desc, &config); 778 if (IS_ERR(rdev)) { 779 ret = PTR_ERR(rdev); 780 dev_err(pca9450->dev, 781 "Failed to register regulator(%s): %d\n", 782 desc->name, ret); 783 return ret; 784 } 785 } 786 787 ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL, 788 pca9450_irq_handler, 789 (IRQF_TRIGGER_FALLING | IRQF_ONESHOT), 790 "pca9450-irq", pca9450); 791 if (ret != 0) { 792 dev_err(pca9450->dev, "Failed to request IRQ: %d\n", 793 pca9450->irq); 794 return ret; 795 } 796 /* Unmask all interrupt except PWRON/WDOG/RSVD */ 797 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK, 798 IRQ_VR_FLT1 | IRQ_VR_FLT2 | IRQ_LOWVSYS | 799 IRQ_THERM_105 | IRQ_THERM_125, 800 IRQ_PWRON | IRQ_WDOGB | IRQ_RSVD); 801 if (ret) { 802 dev_err(&i2c->dev, "Unmask irq error\n"); 803 return ret; 804 } 805 806 /* Clear PRESET_EN bit in BUCK123_DVS to use DVS registers */ 807 ret = regmap_clear_bits(pca9450->regmap, PCA9450_REG_BUCK123_DVS, 808 BUCK123_PRESET_EN); 809 if (ret) { 810 dev_err(&i2c->dev, "Failed to clear PRESET_EN bit: %d\n", ret); 811 return ret; 812 } 813 814 if (of_property_read_bool(i2c->dev.of_node, "nxp,wdog_b-warm-reset")) 815 reset_ctrl = WDOG_B_CFG_WARM; 816 else 817 reset_ctrl = WDOG_B_CFG_COLD_LDO12; 818 819 /* Set reset behavior on assertion of WDOG_B signal */ 820 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_RESET_CTRL, 821 WDOG_B_CFG_MASK, reset_ctrl); 822 if (ret) { 823 dev_err(&i2c->dev, "Failed to set WDOG_B reset behavior\n"); 824 return ret; 825 } 826 827 if (of_property_read_bool(i2c->dev.of_node, "nxp,i2c-lt-enable")) { 828 /* Enable I2C Level Translator */ 829 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_CONFIG2, 830 I2C_LT_MASK, I2C_LT_ON_STANDBY_RUN); 831 if (ret) { 832 dev_err(&i2c->dev, 833 "Failed to enable I2C level translator\n"); 834 return ret; 835 } 836 } 837 838 /* 839 * The driver uses the LDO5CTRL_H register to control the LDO5 regulator. 840 * This is only valid if the SD_VSEL input of the PMIC is high. Let's 841 * check if the pin is available as GPIO and set it to high. 842 */ 843 pca9450->sd_vsel_gpio = gpiod_get_optional(pca9450->dev, "sd-vsel", GPIOD_OUT_HIGH); 844 845 if (IS_ERR(pca9450->sd_vsel_gpio)) { 846 dev_err(&i2c->dev, "Failed to get SD_VSEL GPIO\n"); 847 return PTR_ERR(pca9450->sd_vsel_gpio); 848 } 849 850 dev_info(&i2c->dev, "%s probed.\n", 851 type == PCA9450_TYPE_PCA9450A ? "pca9450a" : "pca9450bc"); 852 853 return 0; 854} 855 856static const struct of_device_id pca9450_of_match[] = { 857 { 858 .compatible = "nxp,pca9450a", 859 .data = (void *)PCA9450_TYPE_PCA9450A, 860 }, 861 { 862 .compatible = "nxp,pca9450b", 863 .data = (void *)PCA9450_TYPE_PCA9450BC, 864 }, 865 { 866 .compatible = "nxp,pca9450c", 867 .data = (void *)PCA9450_TYPE_PCA9450BC, 868 }, 869 { } 870}; 871MODULE_DEVICE_TABLE(of, pca9450_of_match); 872 873static struct i2c_driver pca9450_i2c_driver = { 874 .driver = { 875 .name = "nxp-pca9450", 876 .of_match_table = pca9450_of_match, 877 }, 878 .probe = pca9450_i2c_probe, 879}; 880 881module_i2c_driver(pca9450_i2c_driver); 882 883MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>"); 884MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver"); 885MODULE_LICENSE("GPL");