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/reboot.h> 13 #include <linux/module.h> 14 #include <linux/of.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 struct notifier_block restart_nb; 38 enum pca9450_chip_type type; 39 unsigned int rcnt; 40 int irq; 41 bool sd_vsel_fixed_low; 42 }; 43 44 static const struct regmap_range pca9450_status_range = { 45 .range_min = PCA9450_REG_INT1, 46 .range_max = PCA9450_REG_PWRON_STAT, 47 }; 48 49 static const struct regmap_access_table pca9450_volatile_regs = { 50 .yes_ranges = &pca9450_status_range, 51 .n_yes_ranges = 1, 52 }; 53 54 static const struct regmap_config pca9450_regmap_config = { 55 .reg_bits = 8, 56 .val_bits = 8, 57 .volatile_table = &pca9450_volatile_regs, 58 .max_register = PCA9450_MAX_REGISTER - 1, 59 .cache_type = REGCACHE_MAPLE, 60 }; 61 62 /* 63 * BUCK1/2/3 64 * BUCK1RAM[1:0] BUCK1 DVS ramp rate setting 65 * 00: 25mV/1usec 66 * 01: 25mV/2usec 67 * 10: 25mV/4usec 68 * 11: 25mV/8usec 69 */ 70 static const unsigned int pca9450_dvs_buck_ramp_table[] = { 71 25000, 12500, 6250, 3125 72 }; 73 74 static const struct regulator_ops pca9450_dvs_buck_regulator_ops = { 75 .enable = regulator_enable_regmap, 76 .disable = regulator_disable_regmap, 77 .is_enabled = regulator_is_enabled_regmap, 78 .list_voltage = regulator_list_voltage_linear_range, 79 .set_voltage_sel = regulator_set_voltage_sel_regmap, 80 .get_voltage_sel = regulator_get_voltage_sel_regmap, 81 .set_voltage_time_sel = regulator_set_voltage_time_sel, 82 .set_ramp_delay = regulator_set_ramp_delay_regmap, 83 }; 84 85 static const struct regulator_ops pca9450_buck_regulator_ops = { 86 .enable = regulator_enable_regmap, 87 .disable = regulator_disable_regmap, 88 .is_enabled = regulator_is_enabled_regmap, 89 .list_voltage = regulator_list_voltage_linear_range, 90 .set_voltage_sel = regulator_set_voltage_sel_regmap, 91 .get_voltage_sel = regulator_get_voltage_sel_regmap, 92 .set_voltage_time_sel = regulator_set_voltage_time_sel, 93 }; 94 95 static const struct regulator_ops pca9450_ldo_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 }; 103 104 static unsigned int pca9450_ldo5_get_reg_voltage_sel(struct regulator_dev *rdev) 105 { 106 struct pca9450 *pca9450 = rdev_get_drvdata(rdev); 107 108 if (pca9450->sd_vsel_fixed_low) 109 return PCA9450_REG_LDO5CTRL_L; 110 111 if (pca9450->sd_vsel_gpio && !gpiod_get_value(pca9450->sd_vsel_gpio)) 112 return PCA9450_REG_LDO5CTRL_L; 113 114 return rdev->desc->vsel_reg; 115 } 116 117 static int pca9450_ldo5_get_voltage_sel_regmap(struct regulator_dev *rdev) 118 { 119 unsigned int val; 120 int ret; 121 122 ret = regmap_read(rdev->regmap, pca9450_ldo5_get_reg_voltage_sel(rdev), &val); 123 if (ret != 0) 124 return ret; 125 126 val &= rdev->desc->vsel_mask; 127 val >>= ffs(rdev->desc->vsel_mask) - 1; 128 129 return val; 130 } 131 132 static int pca9450_ldo5_set_voltage_sel_regmap(struct regulator_dev *rdev, unsigned int sel) 133 { 134 int ret; 135 136 sel <<= ffs(rdev->desc->vsel_mask) - 1; 137 138 ret = regmap_update_bits(rdev->regmap, pca9450_ldo5_get_reg_voltage_sel(rdev), 139 rdev->desc->vsel_mask, sel); 140 if (ret) 141 return ret; 142 143 if (rdev->desc->apply_bit) 144 ret = regmap_update_bits(rdev->regmap, rdev->desc->apply_reg, 145 rdev->desc->apply_bit, 146 rdev->desc->apply_bit); 147 return ret; 148 } 149 150 static const struct regulator_ops pca9450_ldo5_regulator_ops = { 151 .enable = regulator_enable_regmap, 152 .disable = regulator_disable_regmap, 153 .is_enabled = regulator_is_enabled_regmap, 154 .list_voltage = regulator_list_voltage_linear_range, 155 .set_voltage_sel = pca9450_ldo5_set_voltage_sel_regmap, 156 .get_voltage_sel = pca9450_ldo5_get_voltage_sel_regmap, 157 }; 158 159 /* 160 * BUCK1/2/3 161 * 0.60 to 2.1875V (12.5mV step) 162 */ 163 static const struct linear_range pca9450_dvs_buck_volts[] = { 164 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x7F, 12500), 165 }; 166 167 /* 168 * BUCK1/3 169 * 0.65 to 2.2375V (12.5mV step) 170 */ 171 static const struct linear_range pca9451a_dvs_buck_volts[] = { 172 REGULATOR_LINEAR_RANGE(650000, 0x00, 0x7F, 12500), 173 }; 174 175 /* 176 * BUCK4/5/6 177 * 0.6V to 3.4V (25mV step) 178 */ 179 static const struct linear_range pca9450_buck_volts[] = { 180 REGULATOR_LINEAR_RANGE(600000, 0x00, 0x70, 25000), 181 REGULATOR_LINEAR_RANGE(3400000, 0x71, 0x7F, 0), 182 }; 183 184 /* 185 * LDO1 186 * 1.6 to 3.3V () 187 */ 188 static const struct linear_range pca9450_ldo1_volts[] = { 189 REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000), 190 REGULATOR_LINEAR_RANGE(3000000, 0x04, 0x07, 100000), 191 }; 192 193 /* 194 * LDO2 195 * 0.8 to 1.15V (50mV step) 196 */ 197 static const struct linear_range pca9450_ldo2_volts[] = { 198 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x07, 50000), 199 }; 200 201 /* 202 * LDO3/4 203 * 0.8 to 3.3V (100mV step) 204 */ 205 static const struct linear_range pca9450_ldo34_volts[] = { 206 REGULATOR_LINEAR_RANGE(800000, 0x00, 0x19, 100000), 207 REGULATOR_LINEAR_RANGE(3300000, 0x1A, 0x1F, 0), 208 }; 209 210 /* 211 * LDO5 212 * 1.8 to 3.3V (100mV step) 213 */ 214 static const struct linear_range pca9450_ldo5_volts[] = { 215 REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000), 216 }; 217 218 static int buck_set_dvs(const struct regulator_desc *desc, 219 struct device_node *np, struct regmap *regmap, 220 char *prop, unsigned int reg, unsigned int mask) 221 { 222 int ret, i; 223 uint32_t uv; 224 225 ret = of_property_read_u32(np, prop, &uv); 226 if (ret == -EINVAL) 227 return 0; 228 else if (ret) 229 return ret; 230 231 for (i = 0; i < desc->n_voltages; i++) { 232 ret = regulator_desc_list_voltage_linear_range(desc, i); 233 if (ret < 0) 234 continue; 235 if (ret == uv) { 236 i <<= ffs(desc->vsel_mask) - 1; 237 ret = regmap_update_bits(regmap, reg, mask, i); 238 break; 239 } 240 } 241 242 if (ret == 0) { 243 struct pca9450_regulator_desc *regulator = container_of(desc, 244 struct pca9450_regulator_desc, desc); 245 246 /* Enable DVS control through PMIC_STBY_REQ for this BUCK */ 247 ret = regmap_update_bits(regmap, regulator->desc.enable_reg, 248 BUCK1_DVS_CTRL, BUCK1_DVS_CTRL); 249 } 250 return ret; 251 } 252 253 static int pca9450_set_dvs_levels(struct device_node *np, 254 const struct regulator_desc *desc, 255 struct regulator_config *cfg) 256 { 257 struct pca9450_regulator_desc *data = container_of(desc, 258 struct pca9450_regulator_desc, desc); 259 const struct pc9450_dvs_config *dvs = &data->dvs; 260 unsigned int reg, mask; 261 char *prop; 262 int i, ret = 0; 263 264 for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) { 265 switch (i) { 266 case PCA9450_DVS_LEVEL_RUN: 267 prop = "nxp,dvs-run-voltage"; 268 reg = dvs->run_reg; 269 mask = dvs->run_mask; 270 break; 271 case PCA9450_DVS_LEVEL_STANDBY: 272 prop = "nxp,dvs-standby-voltage"; 273 reg = dvs->standby_reg; 274 mask = dvs->standby_mask; 275 break; 276 default: 277 return -EINVAL; 278 } 279 280 ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask); 281 if (ret) 282 break; 283 } 284 285 return ret; 286 } 287 288 static const struct pca9450_regulator_desc pca9450a_regulators[] = { 289 { 290 .desc = { 291 .name = "buck1", 292 .of_match = of_match_ptr("BUCK1"), 293 .regulators_node = of_match_ptr("regulators"), 294 .id = PCA9450_BUCK1, 295 .ops = &pca9450_dvs_buck_regulator_ops, 296 .type = REGULATOR_VOLTAGE, 297 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM, 298 .linear_ranges = pca9450_dvs_buck_volts, 299 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 300 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0, 301 .vsel_mask = BUCK1OUT_DVS0_MASK, 302 .enable_reg = PCA9450_REG_BUCK1CTRL, 303 .enable_mask = BUCK1_ENMODE_MASK, 304 .ramp_reg = PCA9450_REG_BUCK1CTRL, 305 .ramp_mask = BUCK1_RAMP_MASK, 306 .ramp_delay_table = pca9450_dvs_buck_ramp_table, 307 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), 308 .enable_val = BUCK_ENMODE_ONREQ, 309 .owner = THIS_MODULE, 310 .of_parse_cb = pca9450_set_dvs_levels, 311 }, 312 .dvs = { 313 .run_reg = PCA9450_REG_BUCK1OUT_DVS0, 314 .run_mask = BUCK1OUT_DVS0_MASK, 315 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1, 316 .standby_mask = BUCK1OUT_DVS1_MASK, 317 }, 318 }, 319 { 320 .desc = { 321 .name = "buck2", 322 .of_match = of_match_ptr("BUCK2"), 323 .regulators_node = of_match_ptr("regulators"), 324 .id = PCA9450_BUCK2, 325 .ops = &pca9450_dvs_buck_regulator_ops, 326 .type = REGULATOR_VOLTAGE, 327 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM, 328 .linear_ranges = pca9450_dvs_buck_volts, 329 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 330 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0, 331 .vsel_mask = BUCK2OUT_DVS0_MASK, 332 .enable_reg = PCA9450_REG_BUCK2CTRL, 333 .enable_mask = BUCK2_ENMODE_MASK, 334 .enable_val = BUCK_ENMODE_ONREQ_STBYREQ, 335 .ramp_reg = PCA9450_REG_BUCK2CTRL, 336 .ramp_mask = BUCK2_RAMP_MASK, 337 .ramp_delay_table = pca9450_dvs_buck_ramp_table, 338 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), 339 .owner = THIS_MODULE, 340 .of_parse_cb = pca9450_set_dvs_levels, 341 }, 342 .dvs = { 343 .run_reg = PCA9450_REG_BUCK2OUT_DVS0, 344 .run_mask = BUCK2OUT_DVS0_MASK, 345 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1, 346 .standby_mask = BUCK2OUT_DVS1_MASK, 347 }, 348 }, 349 { 350 .desc = { 351 .name = "buck3", 352 .of_match = of_match_ptr("BUCK3"), 353 .regulators_node = of_match_ptr("regulators"), 354 .id = PCA9450_BUCK3, 355 .ops = &pca9450_dvs_buck_regulator_ops, 356 .type = REGULATOR_VOLTAGE, 357 .n_voltages = PCA9450_BUCK3_VOLTAGE_NUM, 358 .linear_ranges = pca9450_dvs_buck_volts, 359 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 360 .vsel_reg = PCA9450_REG_BUCK3OUT_DVS0, 361 .vsel_mask = BUCK3OUT_DVS0_MASK, 362 .enable_reg = PCA9450_REG_BUCK3CTRL, 363 .enable_mask = BUCK3_ENMODE_MASK, 364 .enable_val = BUCK_ENMODE_ONREQ, 365 .ramp_reg = PCA9450_REG_BUCK3CTRL, 366 .ramp_mask = BUCK3_RAMP_MASK, 367 .ramp_delay_table = pca9450_dvs_buck_ramp_table, 368 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), 369 .owner = THIS_MODULE, 370 .of_parse_cb = pca9450_set_dvs_levels, 371 }, 372 .dvs = { 373 .run_reg = PCA9450_REG_BUCK3OUT_DVS0, 374 .run_mask = BUCK3OUT_DVS0_MASK, 375 .standby_reg = PCA9450_REG_BUCK3OUT_DVS1, 376 .standby_mask = BUCK3OUT_DVS1_MASK, 377 }, 378 }, 379 { 380 .desc = { 381 .name = "buck4", 382 .of_match = of_match_ptr("BUCK4"), 383 .regulators_node = of_match_ptr("regulators"), 384 .id = PCA9450_BUCK4, 385 .ops = &pca9450_buck_regulator_ops, 386 .type = REGULATOR_VOLTAGE, 387 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM, 388 .linear_ranges = pca9450_buck_volts, 389 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 390 .vsel_reg = PCA9450_REG_BUCK4OUT, 391 .vsel_mask = BUCK4OUT_MASK, 392 .enable_reg = PCA9450_REG_BUCK4CTRL, 393 .enable_mask = BUCK4_ENMODE_MASK, 394 .enable_val = BUCK_ENMODE_ONREQ, 395 .owner = THIS_MODULE, 396 }, 397 }, 398 { 399 .desc = { 400 .name = "buck5", 401 .of_match = of_match_ptr("BUCK5"), 402 .regulators_node = of_match_ptr("regulators"), 403 .id = PCA9450_BUCK5, 404 .ops = &pca9450_buck_regulator_ops, 405 .type = REGULATOR_VOLTAGE, 406 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM, 407 .linear_ranges = pca9450_buck_volts, 408 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 409 .vsel_reg = PCA9450_REG_BUCK5OUT, 410 .vsel_mask = BUCK5OUT_MASK, 411 .enable_reg = PCA9450_REG_BUCK5CTRL, 412 .enable_mask = BUCK5_ENMODE_MASK, 413 .enable_val = BUCK_ENMODE_ONREQ, 414 .owner = THIS_MODULE, 415 }, 416 }, 417 { 418 .desc = { 419 .name = "buck6", 420 .of_match = of_match_ptr("BUCK6"), 421 .regulators_node = of_match_ptr("regulators"), 422 .id = PCA9450_BUCK6, 423 .ops = &pca9450_buck_regulator_ops, 424 .type = REGULATOR_VOLTAGE, 425 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM, 426 .linear_ranges = pca9450_buck_volts, 427 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 428 .vsel_reg = PCA9450_REG_BUCK6OUT, 429 .vsel_mask = BUCK6OUT_MASK, 430 .enable_reg = PCA9450_REG_BUCK6CTRL, 431 .enable_mask = BUCK6_ENMODE_MASK, 432 .enable_val = BUCK_ENMODE_ONREQ, 433 .owner = THIS_MODULE, 434 }, 435 }, 436 { 437 .desc = { 438 .name = "ldo1", 439 .of_match = of_match_ptr("LDO1"), 440 .regulators_node = of_match_ptr("regulators"), 441 .id = PCA9450_LDO1, 442 .ops = &pca9450_ldo_regulator_ops, 443 .type = REGULATOR_VOLTAGE, 444 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM, 445 .linear_ranges = pca9450_ldo1_volts, 446 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts), 447 .vsel_reg = PCA9450_REG_LDO1CTRL, 448 .vsel_mask = LDO1OUT_MASK, 449 .enable_reg = PCA9450_REG_LDO1CTRL, 450 .enable_mask = LDO1_EN_MASK, 451 .owner = THIS_MODULE, 452 }, 453 }, 454 { 455 .desc = { 456 .name = "ldo2", 457 .of_match = of_match_ptr("LDO2"), 458 .regulators_node = of_match_ptr("regulators"), 459 .id = PCA9450_LDO2, 460 .ops = &pca9450_ldo_regulator_ops, 461 .type = REGULATOR_VOLTAGE, 462 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM, 463 .linear_ranges = pca9450_ldo2_volts, 464 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts), 465 .vsel_reg = PCA9450_REG_LDO2CTRL, 466 .vsel_mask = LDO2OUT_MASK, 467 .enable_reg = PCA9450_REG_LDO2CTRL, 468 .enable_mask = LDO2_EN_MASK, 469 .owner = THIS_MODULE, 470 }, 471 }, 472 { 473 .desc = { 474 .name = "ldo3", 475 .of_match = of_match_ptr("LDO3"), 476 .regulators_node = of_match_ptr("regulators"), 477 .id = PCA9450_LDO3, 478 .ops = &pca9450_ldo_regulator_ops, 479 .type = REGULATOR_VOLTAGE, 480 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM, 481 .linear_ranges = pca9450_ldo34_volts, 482 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 483 .vsel_reg = PCA9450_REG_LDO3CTRL, 484 .vsel_mask = LDO3OUT_MASK, 485 .enable_reg = PCA9450_REG_LDO3CTRL, 486 .enable_mask = LDO3_EN_MASK, 487 .owner = THIS_MODULE, 488 }, 489 }, 490 { 491 .desc = { 492 .name = "ldo4", 493 .of_match = of_match_ptr("LDO4"), 494 .regulators_node = of_match_ptr("regulators"), 495 .id = PCA9450_LDO4, 496 .ops = &pca9450_ldo_regulator_ops, 497 .type = REGULATOR_VOLTAGE, 498 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM, 499 .linear_ranges = pca9450_ldo34_volts, 500 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 501 .vsel_reg = PCA9450_REG_LDO4CTRL, 502 .vsel_mask = LDO4OUT_MASK, 503 .enable_reg = PCA9450_REG_LDO4CTRL, 504 .enable_mask = LDO4_EN_MASK, 505 .owner = THIS_MODULE, 506 }, 507 }, 508 { 509 .desc = { 510 .name = "ldo5", 511 .of_match = of_match_ptr("LDO5"), 512 .regulators_node = of_match_ptr("regulators"), 513 .id = PCA9450_LDO5, 514 .ops = &pca9450_ldo5_regulator_ops, 515 .type = REGULATOR_VOLTAGE, 516 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM, 517 .linear_ranges = pca9450_ldo5_volts, 518 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts), 519 .vsel_reg = PCA9450_REG_LDO5CTRL_H, 520 .vsel_mask = LDO5HOUT_MASK, 521 .enable_reg = PCA9450_REG_LDO5CTRL_L, 522 .enable_mask = LDO5H_EN_MASK, 523 .owner = THIS_MODULE, 524 }, 525 }, 526 }; 527 528 /* 529 * Buck3 removed on PCA9450B and connected with Buck1 internal for dual phase 530 * on PCA9450C as no Buck3. 531 */ 532 static const struct pca9450_regulator_desc pca9450bc_regulators[] = { 533 { 534 .desc = { 535 .name = "buck1", 536 .of_match = of_match_ptr("BUCK1"), 537 .regulators_node = of_match_ptr("regulators"), 538 .id = PCA9450_BUCK1, 539 .ops = &pca9450_dvs_buck_regulator_ops, 540 .type = REGULATOR_VOLTAGE, 541 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM, 542 .linear_ranges = pca9450_dvs_buck_volts, 543 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 544 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0, 545 .vsel_mask = BUCK1OUT_DVS0_MASK, 546 .enable_reg = PCA9450_REG_BUCK1CTRL, 547 .enable_mask = BUCK1_ENMODE_MASK, 548 .enable_val = BUCK_ENMODE_ONREQ, 549 .ramp_reg = PCA9450_REG_BUCK1CTRL, 550 .ramp_mask = BUCK1_RAMP_MASK, 551 .ramp_delay_table = pca9450_dvs_buck_ramp_table, 552 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), 553 .owner = THIS_MODULE, 554 .of_parse_cb = pca9450_set_dvs_levels, 555 }, 556 .dvs = { 557 .run_reg = PCA9450_REG_BUCK1OUT_DVS0, 558 .run_mask = BUCK1OUT_DVS0_MASK, 559 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1, 560 .standby_mask = BUCK1OUT_DVS1_MASK, 561 }, 562 }, 563 { 564 .desc = { 565 .name = "buck2", 566 .of_match = of_match_ptr("BUCK2"), 567 .regulators_node = of_match_ptr("regulators"), 568 .id = PCA9450_BUCK2, 569 .ops = &pca9450_dvs_buck_regulator_ops, 570 .type = REGULATOR_VOLTAGE, 571 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM, 572 .linear_ranges = pca9450_dvs_buck_volts, 573 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 574 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0, 575 .vsel_mask = BUCK2OUT_DVS0_MASK, 576 .enable_reg = PCA9450_REG_BUCK2CTRL, 577 .enable_mask = BUCK2_ENMODE_MASK, 578 .enable_val = BUCK_ENMODE_ONREQ_STBYREQ, 579 .ramp_reg = PCA9450_REG_BUCK2CTRL, 580 .ramp_mask = BUCK2_RAMP_MASK, 581 .ramp_delay_table = pca9450_dvs_buck_ramp_table, 582 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), 583 .owner = THIS_MODULE, 584 .of_parse_cb = pca9450_set_dvs_levels, 585 }, 586 .dvs = { 587 .run_reg = PCA9450_REG_BUCK2OUT_DVS0, 588 .run_mask = BUCK2OUT_DVS0_MASK, 589 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1, 590 .standby_mask = BUCK2OUT_DVS1_MASK, 591 }, 592 }, 593 { 594 .desc = { 595 .name = "buck4", 596 .of_match = of_match_ptr("BUCK4"), 597 .regulators_node = of_match_ptr("regulators"), 598 .id = PCA9450_BUCK4, 599 .ops = &pca9450_buck_regulator_ops, 600 .type = REGULATOR_VOLTAGE, 601 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM, 602 .linear_ranges = pca9450_buck_volts, 603 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 604 .vsel_reg = PCA9450_REG_BUCK4OUT, 605 .vsel_mask = BUCK4OUT_MASK, 606 .enable_reg = PCA9450_REG_BUCK4CTRL, 607 .enable_mask = BUCK4_ENMODE_MASK, 608 .enable_val = BUCK_ENMODE_ONREQ, 609 .owner = THIS_MODULE, 610 }, 611 }, 612 { 613 .desc = { 614 .name = "buck5", 615 .of_match = of_match_ptr("BUCK5"), 616 .regulators_node = of_match_ptr("regulators"), 617 .id = PCA9450_BUCK5, 618 .ops = &pca9450_buck_regulator_ops, 619 .type = REGULATOR_VOLTAGE, 620 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM, 621 .linear_ranges = pca9450_buck_volts, 622 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 623 .vsel_reg = PCA9450_REG_BUCK5OUT, 624 .vsel_mask = BUCK5OUT_MASK, 625 .enable_reg = PCA9450_REG_BUCK5CTRL, 626 .enable_mask = BUCK5_ENMODE_MASK, 627 .enable_val = BUCK_ENMODE_ONREQ, 628 .owner = THIS_MODULE, 629 }, 630 }, 631 { 632 .desc = { 633 .name = "buck6", 634 .of_match = of_match_ptr("BUCK6"), 635 .regulators_node = of_match_ptr("regulators"), 636 .id = PCA9450_BUCK6, 637 .ops = &pca9450_buck_regulator_ops, 638 .type = REGULATOR_VOLTAGE, 639 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM, 640 .linear_ranges = pca9450_buck_volts, 641 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 642 .vsel_reg = PCA9450_REG_BUCK6OUT, 643 .vsel_mask = BUCK6OUT_MASK, 644 .enable_reg = PCA9450_REG_BUCK6CTRL, 645 .enable_mask = BUCK6_ENMODE_MASK, 646 .enable_val = BUCK_ENMODE_ONREQ, 647 .owner = THIS_MODULE, 648 }, 649 }, 650 { 651 .desc = { 652 .name = "ldo1", 653 .of_match = of_match_ptr("LDO1"), 654 .regulators_node = of_match_ptr("regulators"), 655 .id = PCA9450_LDO1, 656 .ops = &pca9450_ldo_regulator_ops, 657 .type = REGULATOR_VOLTAGE, 658 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM, 659 .linear_ranges = pca9450_ldo1_volts, 660 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts), 661 .vsel_reg = PCA9450_REG_LDO1CTRL, 662 .vsel_mask = LDO1OUT_MASK, 663 .enable_reg = PCA9450_REG_LDO1CTRL, 664 .enable_mask = LDO1_EN_MASK, 665 .owner = THIS_MODULE, 666 }, 667 }, 668 { 669 .desc = { 670 .name = "ldo2", 671 .of_match = of_match_ptr("LDO2"), 672 .regulators_node = of_match_ptr("regulators"), 673 .id = PCA9450_LDO2, 674 .ops = &pca9450_ldo_regulator_ops, 675 .type = REGULATOR_VOLTAGE, 676 .n_voltages = PCA9450_LDO2_VOLTAGE_NUM, 677 .linear_ranges = pca9450_ldo2_volts, 678 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts), 679 .vsel_reg = PCA9450_REG_LDO2CTRL, 680 .vsel_mask = LDO2OUT_MASK, 681 .enable_reg = PCA9450_REG_LDO2CTRL, 682 .enable_mask = LDO2_EN_MASK, 683 .owner = THIS_MODULE, 684 }, 685 }, 686 { 687 .desc = { 688 .name = "ldo3", 689 .of_match = of_match_ptr("LDO3"), 690 .regulators_node = of_match_ptr("regulators"), 691 .id = PCA9450_LDO3, 692 .ops = &pca9450_ldo_regulator_ops, 693 .type = REGULATOR_VOLTAGE, 694 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM, 695 .linear_ranges = pca9450_ldo34_volts, 696 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 697 .vsel_reg = PCA9450_REG_LDO3CTRL, 698 .vsel_mask = LDO3OUT_MASK, 699 .enable_reg = PCA9450_REG_LDO3CTRL, 700 .enable_mask = LDO3_EN_MASK, 701 .owner = THIS_MODULE, 702 }, 703 }, 704 { 705 .desc = { 706 .name = "ldo4", 707 .of_match = of_match_ptr("LDO4"), 708 .regulators_node = of_match_ptr("regulators"), 709 .id = PCA9450_LDO4, 710 .ops = &pca9450_ldo_regulator_ops, 711 .type = REGULATOR_VOLTAGE, 712 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM, 713 .linear_ranges = pca9450_ldo34_volts, 714 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 715 .vsel_reg = PCA9450_REG_LDO4CTRL, 716 .vsel_mask = LDO4OUT_MASK, 717 .enable_reg = PCA9450_REG_LDO4CTRL, 718 .enable_mask = LDO4_EN_MASK, 719 .owner = THIS_MODULE, 720 }, 721 }, 722 { 723 .desc = { 724 .name = "ldo5", 725 .of_match = of_match_ptr("LDO5"), 726 .regulators_node = of_match_ptr("regulators"), 727 .id = PCA9450_LDO5, 728 .ops = &pca9450_ldo5_regulator_ops, 729 .type = REGULATOR_VOLTAGE, 730 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM, 731 .linear_ranges = pca9450_ldo5_volts, 732 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts), 733 .vsel_reg = PCA9450_REG_LDO5CTRL_H, 734 .vsel_mask = LDO5HOUT_MASK, 735 .enable_reg = PCA9450_REG_LDO5CTRL_L, 736 .enable_mask = LDO5H_EN_MASK, 737 .owner = THIS_MODULE, 738 }, 739 }, 740 }; 741 742 static const struct pca9450_regulator_desc pca9451a_regulators[] = { 743 { 744 .desc = { 745 .name = "buck1", 746 .of_match = of_match_ptr("BUCK1"), 747 .regulators_node = of_match_ptr("regulators"), 748 .id = PCA9450_BUCK1, 749 .ops = &pca9450_dvs_buck_regulator_ops, 750 .type = REGULATOR_VOLTAGE, 751 .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM, 752 .linear_ranges = pca9451a_dvs_buck_volts, 753 .n_linear_ranges = ARRAY_SIZE(pca9451a_dvs_buck_volts), 754 .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0, 755 .vsel_mask = BUCK1OUT_DVS0_MASK, 756 .enable_reg = PCA9450_REG_BUCK1CTRL, 757 .enable_mask = BUCK1_ENMODE_MASK, 758 .enable_val = BUCK_ENMODE_ONREQ, 759 .ramp_mask = BUCK1_RAMP_MASK, 760 .ramp_delay_table = pca9450_dvs_buck_ramp_table, 761 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), 762 .owner = THIS_MODULE, 763 .of_parse_cb = pca9450_set_dvs_levels, 764 }, 765 .dvs = { 766 .run_reg = PCA9450_REG_BUCK1OUT_DVS0, 767 .run_mask = BUCK1OUT_DVS0_MASK, 768 .standby_reg = PCA9450_REG_BUCK1OUT_DVS1, 769 .standby_mask = BUCK1OUT_DVS1_MASK, 770 }, 771 }, 772 { 773 .desc = { 774 .name = "buck2", 775 .of_match = of_match_ptr("BUCK2"), 776 .regulators_node = of_match_ptr("regulators"), 777 .id = PCA9450_BUCK2, 778 .ops = &pca9450_dvs_buck_regulator_ops, 779 .type = REGULATOR_VOLTAGE, 780 .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM, 781 .linear_ranges = pca9450_dvs_buck_volts, 782 .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), 783 .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0, 784 .vsel_mask = BUCK2OUT_DVS0_MASK, 785 .enable_reg = PCA9450_REG_BUCK2CTRL, 786 .enable_mask = BUCK2_ENMODE_MASK, 787 .enable_val = BUCK_ENMODE_ONREQ_STBYREQ, 788 .ramp_mask = BUCK2_RAMP_MASK, 789 .ramp_delay_table = pca9450_dvs_buck_ramp_table, 790 .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), 791 .owner = THIS_MODULE, 792 .of_parse_cb = pca9450_set_dvs_levels, 793 }, 794 .dvs = { 795 .run_reg = PCA9450_REG_BUCK2OUT_DVS0, 796 .run_mask = BUCK2OUT_DVS0_MASK, 797 .standby_reg = PCA9450_REG_BUCK2OUT_DVS1, 798 .standby_mask = BUCK2OUT_DVS1_MASK, 799 }, 800 }, 801 { 802 .desc = { 803 .name = "buck4", 804 .of_match = of_match_ptr("BUCK4"), 805 .regulators_node = of_match_ptr("regulators"), 806 .id = PCA9450_BUCK4, 807 .ops = &pca9450_buck_regulator_ops, 808 .type = REGULATOR_VOLTAGE, 809 .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM, 810 .linear_ranges = pca9450_buck_volts, 811 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 812 .vsel_reg = PCA9450_REG_BUCK4OUT, 813 .vsel_mask = BUCK4OUT_MASK, 814 .enable_reg = PCA9450_REG_BUCK4CTRL, 815 .enable_mask = BUCK4_ENMODE_MASK, 816 .enable_val = BUCK_ENMODE_ONREQ, 817 .owner = THIS_MODULE, 818 }, 819 }, 820 { 821 .desc = { 822 .name = "buck5", 823 .of_match = of_match_ptr("BUCK5"), 824 .regulators_node = of_match_ptr("regulators"), 825 .id = PCA9450_BUCK5, 826 .ops = &pca9450_buck_regulator_ops, 827 .type = REGULATOR_VOLTAGE, 828 .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM, 829 .linear_ranges = pca9450_buck_volts, 830 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 831 .vsel_reg = PCA9450_REG_BUCK5OUT, 832 .vsel_mask = BUCK5OUT_MASK, 833 .enable_reg = PCA9450_REG_BUCK5CTRL, 834 .enable_mask = BUCK5_ENMODE_MASK, 835 .enable_val = BUCK_ENMODE_ONREQ, 836 .owner = THIS_MODULE, 837 }, 838 }, 839 { 840 .desc = { 841 .name = "buck6", 842 .of_match = of_match_ptr("BUCK6"), 843 .regulators_node = of_match_ptr("regulators"), 844 .id = PCA9450_BUCK6, 845 .ops = &pca9450_buck_regulator_ops, 846 .type = REGULATOR_VOLTAGE, 847 .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM, 848 .linear_ranges = pca9450_buck_volts, 849 .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), 850 .vsel_reg = PCA9450_REG_BUCK6OUT, 851 .vsel_mask = BUCK6OUT_MASK, 852 .enable_reg = PCA9450_REG_BUCK6CTRL, 853 .enable_mask = BUCK6_ENMODE_MASK, 854 .enable_val = BUCK_ENMODE_ONREQ, 855 .owner = THIS_MODULE, 856 }, 857 }, 858 { 859 .desc = { 860 .name = "ldo1", 861 .of_match = of_match_ptr("LDO1"), 862 .regulators_node = of_match_ptr("regulators"), 863 .id = PCA9450_LDO1, 864 .ops = &pca9450_ldo_regulator_ops, 865 .type = REGULATOR_VOLTAGE, 866 .n_voltages = PCA9450_LDO1_VOLTAGE_NUM, 867 .linear_ranges = pca9450_ldo1_volts, 868 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts), 869 .vsel_reg = PCA9450_REG_LDO1CTRL, 870 .vsel_mask = LDO1OUT_MASK, 871 .enable_reg = PCA9450_REG_LDO1CTRL, 872 .enable_mask = LDO1_EN_MASK, 873 .owner = THIS_MODULE, 874 }, 875 }, 876 { 877 .desc = { 878 .name = "ldo3", 879 .of_match = of_match_ptr("LDO3"), 880 .regulators_node = of_match_ptr("regulators"), 881 .id = PCA9450_LDO3, 882 .ops = &pca9450_ldo_regulator_ops, 883 .type = REGULATOR_VOLTAGE, 884 .n_voltages = PCA9450_LDO3_VOLTAGE_NUM, 885 .linear_ranges = pca9450_ldo34_volts, 886 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 887 .vsel_reg = PCA9450_REG_LDO3CTRL, 888 .vsel_mask = LDO3OUT_MASK, 889 .enable_reg = PCA9450_REG_LDO3CTRL, 890 .enable_mask = LDO3_EN_MASK, 891 .owner = THIS_MODULE, 892 }, 893 }, 894 { 895 .desc = { 896 .name = "ldo4", 897 .of_match = of_match_ptr("LDO4"), 898 .regulators_node = of_match_ptr("regulators"), 899 .id = PCA9450_LDO4, 900 .ops = &pca9450_ldo_regulator_ops, 901 .type = REGULATOR_VOLTAGE, 902 .n_voltages = PCA9450_LDO4_VOLTAGE_NUM, 903 .linear_ranges = pca9450_ldo34_volts, 904 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), 905 .vsel_reg = PCA9450_REG_LDO4CTRL, 906 .vsel_mask = LDO4OUT_MASK, 907 .enable_reg = PCA9450_REG_LDO4CTRL, 908 .enable_mask = LDO4_EN_MASK, 909 .owner = THIS_MODULE, 910 }, 911 }, 912 { 913 .desc = { 914 .name = "ldo5", 915 .of_match = of_match_ptr("LDO5"), 916 .regulators_node = of_match_ptr("regulators"), 917 .id = PCA9450_LDO5, 918 .ops = &pca9450_ldo5_regulator_ops, 919 .type = REGULATOR_VOLTAGE, 920 .n_voltages = PCA9450_LDO5_VOLTAGE_NUM, 921 .linear_ranges = pca9450_ldo5_volts, 922 .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts), 923 .vsel_reg = PCA9450_REG_LDO5CTRL_H, 924 .vsel_mask = LDO5HOUT_MASK, 925 .enable_reg = PCA9450_REG_LDO5CTRL_L, 926 .enable_mask = LDO5H_EN_MASK, 927 .owner = THIS_MODULE, 928 }, 929 }, 930 }; 931 932 static irqreturn_t pca9450_irq_handler(int irq, void *data) 933 { 934 struct pca9450 *pca9450 = data; 935 struct regmap *regmap = pca9450->regmap; 936 unsigned int status; 937 int ret; 938 939 ret = regmap_read(regmap, PCA9450_REG_INT1, &status); 940 if (ret < 0) { 941 dev_err(pca9450->dev, 942 "Failed to read INT1(%d)\n", ret); 943 return IRQ_NONE; 944 } 945 946 if (status & IRQ_PWRON) 947 dev_warn(pca9450->dev, "PWRON interrupt.\n"); 948 949 if (status & IRQ_WDOGB) 950 dev_warn(pca9450->dev, "WDOGB interrupt.\n"); 951 952 if (status & IRQ_VR_FLT1) 953 dev_warn(pca9450->dev, "VRFLT1 interrupt.\n"); 954 955 if (status & IRQ_VR_FLT2) 956 dev_warn(pca9450->dev, "VRFLT2 interrupt.\n"); 957 958 if (status & IRQ_LOWVSYS) 959 dev_warn(pca9450->dev, "LOWVSYS interrupt.\n"); 960 961 if (status & IRQ_THERM_105) 962 dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n"); 963 964 if (status & IRQ_THERM_125) 965 dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n"); 966 967 return IRQ_HANDLED; 968 } 969 970 static int pca9450_i2c_restart_handler(struct notifier_block *nb, 971 unsigned long action, void *data) 972 { 973 struct pca9450 *pca9450 = container_of(nb, struct pca9450, restart_nb); 974 struct i2c_client *i2c = container_of(pca9450->dev, struct i2c_client, dev); 975 976 dev_dbg(&i2c->dev, "Restarting device..\n"); 977 if (i2c_smbus_write_byte_data(i2c, PCA9450_REG_SWRST, SW_RST_COMMAND) == 0) { 978 /* tRESTART is 250ms, so 300 should be enough to make sure it happened */ 979 mdelay(300); 980 /* When we get here, the PMIC didn't power cycle for some reason. so warn.*/ 981 dev_warn(&i2c->dev, "Device didn't respond to restart command\n"); 982 } else { 983 dev_err(&i2c->dev, "Restart command failed\n"); 984 } 985 986 return 0; 987 } 988 989 static int pca9450_i2c_probe(struct i2c_client *i2c) 990 { 991 enum pca9450_chip_type type = (unsigned int)(uintptr_t) 992 of_device_get_match_data(&i2c->dev); 993 const struct pca9450_regulator_desc *regulator_desc; 994 struct regulator_config config = { }; 995 struct regulator_dev *ldo5; 996 struct pca9450 *pca9450; 997 unsigned int device_id, i; 998 unsigned int reset_ctrl; 999 int ret; 1000 1001 pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL); 1002 if (!pca9450) 1003 return -ENOMEM; 1004 1005 switch (type) { 1006 case PCA9450_TYPE_PCA9450A: 1007 regulator_desc = pca9450a_regulators; 1008 pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators); 1009 break; 1010 case PCA9450_TYPE_PCA9450BC: 1011 regulator_desc = pca9450bc_regulators; 1012 pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators); 1013 break; 1014 case PCA9450_TYPE_PCA9451A: 1015 case PCA9450_TYPE_PCA9452: 1016 regulator_desc = pca9451a_regulators; 1017 pca9450->rcnt = ARRAY_SIZE(pca9451a_regulators); 1018 break; 1019 default: 1020 dev_err(&i2c->dev, "Unknown device type"); 1021 return -EINVAL; 1022 } 1023 1024 pca9450->irq = i2c->irq; 1025 pca9450->type = type; 1026 pca9450->dev = &i2c->dev; 1027 1028 dev_set_drvdata(&i2c->dev, pca9450); 1029 1030 pca9450->regmap = devm_regmap_init_i2c(i2c, 1031 &pca9450_regmap_config); 1032 if (IS_ERR(pca9450->regmap)) 1033 return dev_err_probe(&i2c->dev, PTR_ERR(pca9450->regmap), 1034 "regmap initialization failed\n"); 1035 1036 ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id); 1037 if (ret) 1038 return dev_err_probe(&i2c->dev, ret, "Read device id error\n"); 1039 1040 /* Check your board and dts for match the right pmic */ 1041 if (((device_id >> 4) != 0x1 && type == PCA9450_TYPE_PCA9450A) || 1042 ((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC) || 1043 ((device_id >> 4) != 0x9 && type == PCA9450_TYPE_PCA9451A) || 1044 ((device_id >> 4) != 0x9 && type == PCA9450_TYPE_PCA9452)) 1045 return dev_err_probe(&i2c->dev, -EINVAL, 1046 "Device id(%x) mismatched\n", device_id >> 4); 1047 1048 for (i = 0; i < pca9450->rcnt; i++) { 1049 const struct regulator_desc *desc; 1050 struct regulator_dev *rdev; 1051 const struct pca9450_regulator_desc *r; 1052 1053 r = ®ulator_desc[i]; 1054 desc = &r->desc; 1055 1056 if (type == PCA9450_TYPE_PCA9451A && !strcmp(desc->name, "ldo3")) 1057 continue; 1058 1059 config.regmap = pca9450->regmap; 1060 config.dev = pca9450->dev; 1061 config.driver_data = pca9450; 1062 1063 rdev = devm_regulator_register(pca9450->dev, desc, &config); 1064 if (IS_ERR(rdev)) 1065 return dev_err_probe(pca9450->dev, PTR_ERR(rdev), 1066 "Failed to register regulator(%s)\n", desc->name); 1067 1068 if (!strcmp(desc->name, "ldo5")) 1069 ldo5 = rdev; 1070 } 1071 1072 if (pca9450->irq) { 1073 ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL, 1074 pca9450_irq_handler, 1075 (IRQF_TRIGGER_FALLING | IRQF_ONESHOT), 1076 "pca9450-irq", pca9450); 1077 if (ret != 0) 1078 return dev_err_probe(pca9450->dev, ret, "Failed to request IRQ: %d\n", 1079 pca9450->irq); 1080 1081 /* Unmask all interrupt except PWRON/WDOG/RSVD */ 1082 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK, 1083 IRQ_VR_FLT1 | IRQ_VR_FLT2 | IRQ_LOWVSYS | 1084 IRQ_THERM_105 | IRQ_THERM_125, 1085 IRQ_PWRON | IRQ_WDOGB | IRQ_RSVD); 1086 if (ret) 1087 return dev_err_probe(&i2c->dev, ret, "Unmask irq error\n"); 1088 } 1089 1090 /* Clear PRESET_EN bit in BUCK123_DVS to use DVS registers */ 1091 ret = regmap_clear_bits(pca9450->regmap, PCA9450_REG_BUCK123_DVS, 1092 BUCK123_PRESET_EN); 1093 if (ret) 1094 return dev_err_probe(&i2c->dev, ret, "Failed to clear PRESET_EN bit\n"); 1095 1096 if (of_property_read_bool(i2c->dev.of_node, "nxp,wdog_b-warm-reset")) 1097 reset_ctrl = WDOG_B_CFG_WARM; 1098 else 1099 reset_ctrl = WDOG_B_CFG_COLD_LDO12; 1100 1101 /* Set reset behavior on assertion of WDOG_B signal */ 1102 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_RESET_CTRL, 1103 WDOG_B_CFG_MASK, reset_ctrl); 1104 if (ret) 1105 return dev_err_probe(&i2c->dev, ret, "Failed to set WDOG_B reset behavior\n"); 1106 1107 if (of_property_read_bool(i2c->dev.of_node, "nxp,i2c-lt-enable")) { 1108 /* Enable I2C Level Translator */ 1109 ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_CONFIG2, 1110 I2C_LT_MASK, I2C_LT_ON_STANDBY_RUN); 1111 if (ret) 1112 return dev_err_probe(&i2c->dev, ret, 1113 "Failed to enable I2C level translator\n"); 1114 } 1115 1116 /* 1117 * For LDO5 we need to be able to check the status of the SD_VSEL input in 1118 * order to know which control register is used. Most boards connect SD_VSEL 1119 * to the VSELECT signal, so we can use the GPIO that is internally routed 1120 * to this signal (if SION bit is set in IOMUX). 1121 */ 1122 pca9450->sd_vsel_gpio = gpiod_get_optional(&ldo5->dev, "sd-vsel", GPIOD_IN); 1123 if (IS_ERR(pca9450->sd_vsel_gpio)) { 1124 dev_err(&i2c->dev, "Failed to get SD_VSEL GPIO\n"); 1125 return ret; 1126 } 1127 1128 pca9450->sd_vsel_fixed_low = 1129 of_property_read_bool(ldo5->dev.of_node, "nxp,sd-vsel-fixed-low"); 1130 1131 pca9450->restart_nb.notifier_call = pca9450_i2c_restart_handler; 1132 pca9450->restart_nb.priority = PCA9450_RESTART_HANDLER_PRIORITY; 1133 1134 if (register_restart_handler(&pca9450->restart_nb)) 1135 dev_warn(&i2c->dev, "Failed to register restart handler\n"); 1136 1137 dev_info(&i2c->dev, "%s probed.\n", 1138 type == PCA9450_TYPE_PCA9450A ? "pca9450a" : 1139 (type == PCA9450_TYPE_PCA9451A ? "pca9451a" : "pca9450bc")); 1140 1141 return 0; 1142 } 1143 1144 static const struct of_device_id pca9450_of_match[] = { 1145 { 1146 .compatible = "nxp,pca9450a", 1147 .data = (void *)PCA9450_TYPE_PCA9450A, 1148 }, 1149 { 1150 .compatible = "nxp,pca9450b", 1151 .data = (void *)PCA9450_TYPE_PCA9450BC, 1152 }, 1153 { 1154 .compatible = "nxp,pca9450c", 1155 .data = (void *)PCA9450_TYPE_PCA9450BC, 1156 }, 1157 { 1158 .compatible = "nxp,pca9451a", 1159 .data = (void *)PCA9450_TYPE_PCA9451A, 1160 }, 1161 { 1162 .compatible = "nxp,pca9452", 1163 .data = (void *)PCA9450_TYPE_PCA9452, 1164 }, 1165 { } 1166 }; 1167 MODULE_DEVICE_TABLE(of, pca9450_of_match); 1168 1169 static struct i2c_driver pca9450_i2c_driver = { 1170 .driver = { 1171 .name = "nxp-pca9450", 1172 .probe_type = PROBE_PREFER_ASYNCHRONOUS, 1173 .of_match_table = pca9450_of_match, 1174 }, 1175 .probe = pca9450_i2c_probe, 1176 }; 1177 1178 module_i2c_driver(pca9450_i2c_driver); 1179 1180 MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>"); 1181 MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver"); 1182 MODULE_LICENSE("GPL"); 1183