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