1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // FAN53555 Fairchild Digitally Programmable TinyBuck Regulator Driver. 4 // 5 // Supported Part Numbers: 6 // FAN53555UC00X/01X/03X/04X/05X 7 // 8 // Copyright (c) 2012 Marvell Technology Ltd. 9 // Yunfan Zhang <yfzhang@marvell.com> 10 11 #include <linux/bitops.h> 12 #include <linux/err.h> 13 #include <linux/i2c.h> 14 #include <linux/module.h> 15 #include <linux/of_device.h> 16 #include <linux/param.h> 17 #include <linux/platform_device.h> 18 #include <linux/regmap.h> 19 #include <linux/regulator/driver.h> 20 #include <linux/regulator/fan53555.h> 21 #include <linux/regulator/machine.h> 22 #include <linux/regulator/of_regulator.h> 23 #include <linux/slab.h> 24 25 /* Voltage setting */ 26 #define FAN53555_VSEL0 0x00 27 #define FAN53555_VSEL1 0x01 28 29 #define RK8602_VSEL0 0x06 30 #define RK8602_VSEL1 0x07 31 32 #define TCS4525_VSEL0 0x11 33 #define TCS4525_VSEL1 0x10 34 #define TCS4525_TIME 0x13 35 #define TCS4525_COMMAND 0x14 36 37 /* Control register */ 38 #define FAN53555_CONTROL 0x02 39 /* IC Type */ 40 #define FAN53555_ID1 0x03 41 /* IC mask version */ 42 #define FAN53555_ID2 0x04 43 /* Monitor register */ 44 #define FAN53555_MONITOR 0x05 45 46 /* VSEL bit definitions */ 47 #define VSEL_BUCK_EN BIT(7) 48 #define VSEL_MODE BIT(6) 49 /* Chip ID and Verison */ 50 #define DIE_ID 0x0F /* ID1 */ 51 #define DIE_REV 0x0F /* ID2 */ 52 /* Control bit definitions */ 53 #define CTL_OUTPUT_DISCHG BIT(7) 54 #define CTL_SLEW_MASK GENMASK(6, 4) 55 #define CTL_RESET BIT(2) 56 #define CTL_MODE_VSEL0_MODE BIT(0) 57 #define CTL_MODE_VSEL1_MODE BIT(1) 58 59 #define FAN53555_NVOLTAGES 64 /* Numbers of voltages */ 60 #define FAN53526_NVOLTAGES 128 61 #define RK8602_NVOLTAGES 160 62 63 #define TCS_VSEL0_MODE BIT(7) 64 #define TCS_VSEL1_MODE BIT(6) 65 66 #define TCS_SLEW_MASK GENMASK(4, 3) 67 68 enum fan53555_vendor { 69 FAN53526_VENDOR_FAIRCHILD = 0, 70 FAN53555_VENDOR_FAIRCHILD, 71 FAN53555_VENDOR_ROCKCHIP, /* RK8600, RK8601 */ 72 RK8602_VENDOR_ROCKCHIP, /* RK8602, RK8603 */ 73 FAN53555_VENDOR_SILERGY, 74 FAN53526_VENDOR_TCS, 75 }; 76 77 enum { 78 FAN53526_CHIP_ID_01 = 1, 79 }; 80 81 enum { 82 FAN53526_CHIP_REV_08 = 8, 83 }; 84 85 /* IC Type */ 86 enum { 87 FAN53555_CHIP_ID_00 = 0, 88 FAN53555_CHIP_ID_01, 89 FAN53555_CHIP_ID_02, 90 FAN53555_CHIP_ID_03, 91 FAN53555_CHIP_ID_04, 92 FAN53555_CHIP_ID_05, 93 FAN53555_CHIP_ID_08 = 8, 94 }; 95 96 enum { 97 RK8600_CHIP_ID_08 = 8, /* RK8600, RK8601 */ 98 }; 99 100 enum { 101 RK8602_CHIP_ID_10 = 10, /* RK8602, RK8603 */ 102 }; 103 104 enum { 105 TCS4525_CHIP_ID_12 = 12, 106 }; 107 108 enum { 109 TCS4526_CHIP_ID_00 = 0, 110 }; 111 112 /* IC mask revision */ 113 enum { 114 FAN53555_CHIP_REV_00 = 0x3, 115 FAN53555_CHIP_REV_13 = 0xf, 116 }; 117 118 enum { 119 SILERGY_SYR82X = 8, 120 SILERGY_SYR83X = 9, 121 }; 122 123 struct fan53555_device_info { 124 enum fan53555_vendor vendor; 125 struct device *dev; 126 struct regulator_desc desc; 127 struct regulator_init_data *regulator; 128 /* IC Type and Rev */ 129 int chip_id; 130 int chip_rev; 131 /* Voltage setting register */ 132 unsigned int vol_reg; 133 unsigned int sleep_reg; 134 unsigned int en_reg; 135 unsigned int sleep_en_reg; 136 /* Voltage range and step(linear) */ 137 unsigned int vsel_min; 138 unsigned int vsel_step; 139 unsigned int vsel_count; 140 /* Mode */ 141 unsigned int mode_reg; 142 unsigned int mode_mask; 143 /* Sleep voltage cache */ 144 unsigned int sleep_vol_cache; 145 /* Slew rate */ 146 unsigned int slew_reg; 147 unsigned int slew_mask; 148 const unsigned int *ramp_delay_table; 149 unsigned int n_ramp_values; 150 unsigned int slew_rate; 151 }; 152 153 static int fan53555_set_suspend_voltage(struct regulator_dev *rdev, int uV) 154 { 155 struct fan53555_device_info *di = rdev_get_drvdata(rdev); 156 int ret; 157 158 if (di->sleep_vol_cache == uV) 159 return 0; 160 ret = regulator_map_voltage_linear(rdev, uV, uV); 161 if (ret < 0) 162 return ret; 163 ret = regmap_update_bits(rdev->regmap, di->sleep_reg, 164 di->desc.vsel_mask, ret); 165 if (ret < 0) 166 return ret; 167 /* Cache the sleep voltage setting. 168 * Might not be the real voltage which is rounded */ 169 di->sleep_vol_cache = uV; 170 171 return 0; 172 } 173 174 static int fan53555_set_suspend_enable(struct regulator_dev *rdev) 175 { 176 struct fan53555_device_info *di = rdev_get_drvdata(rdev); 177 178 return regmap_update_bits(rdev->regmap, di->sleep_en_reg, 179 VSEL_BUCK_EN, VSEL_BUCK_EN); 180 } 181 182 static int fan53555_set_suspend_disable(struct regulator_dev *rdev) 183 { 184 struct fan53555_device_info *di = rdev_get_drvdata(rdev); 185 186 return regmap_update_bits(rdev->regmap, di->sleep_en_reg, 187 VSEL_BUCK_EN, 0); 188 } 189 190 static int fan53555_set_mode(struct regulator_dev *rdev, unsigned int mode) 191 { 192 struct fan53555_device_info *di = rdev_get_drvdata(rdev); 193 194 switch (mode) { 195 case REGULATOR_MODE_FAST: 196 regmap_update_bits(rdev->regmap, di->mode_reg, 197 di->mode_mask, di->mode_mask); 198 break; 199 case REGULATOR_MODE_NORMAL: 200 regmap_update_bits(rdev->regmap, di->vol_reg, di->mode_mask, 0); 201 break; 202 default: 203 return -EINVAL; 204 } 205 return 0; 206 } 207 208 static unsigned int fan53555_get_mode(struct regulator_dev *rdev) 209 { 210 struct fan53555_device_info *di = rdev_get_drvdata(rdev); 211 unsigned int val; 212 int ret = 0; 213 214 ret = regmap_read(rdev->regmap, di->mode_reg, &val); 215 if (ret < 0) 216 return ret; 217 if (val & di->mode_mask) 218 return REGULATOR_MODE_FAST; 219 else 220 return REGULATOR_MODE_NORMAL; 221 } 222 223 static const unsigned int slew_rates[] = { 224 64000, 225 32000, 226 16000, 227 8000, 228 4000, 229 2000, 230 1000, 231 500, 232 }; 233 234 static const unsigned int tcs_slew_rates[] = { 235 18700, 236 9300, 237 4600, 238 2300, 239 }; 240 241 static const struct regulator_ops fan53555_regulator_ops = { 242 .set_voltage_sel = regulator_set_voltage_sel_regmap, 243 .get_voltage_sel = regulator_get_voltage_sel_regmap, 244 .set_voltage_time_sel = regulator_set_voltage_time_sel, 245 .map_voltage = regulator_map_voltage_linear, 246 .list_voltage = regulator_list_voltage_linear, 247 .set_suspend_voltage = fan53555_set_suspend_voltage, 248 .enable = regulator_enable_regmap, 249 .disable = regulator_disable_regmap, 250 .is_enabled = regulator_is_enabled_regmap, 251 .set_mode = fan53555_set_mode, 252 .get_mode = fan53555_get_mode, 253 .set_ramp_delay = regulator_set_ramp_delay_regmap, 254 .set_suspend_enable = fan53555_set_suspend_enable, 255 .set_suspend_disable = fan53555_set_suspend_disable, 256 }; 257 258 static int fan53526_voltages_setup_fairchild(struct fan53555_device_info *di) 259 { 260 /* Init voltage range and step */ 261 switch (di->chip_id) { 262 case FAN53526_CHIP_ID_01: 263 switch (di->chip_rev) { 264 case FAN53526_CHIP_REV_08: 265 di->vsel_min = 600000; 266 di->vsel_step = 6250; 267 break; 268 default: 269 dev_err(di->dev, 270 "Chip ID %d with rev %d not supported!\n", 271 di->chip_id, di->chip_rev); 272 return -EINVAL; 273 } 274 break; 275 default: 276 dev_err(di->dev, 277 "Chip ID %d not supported!\n", di->chip_id); 278 return -EINVAL; 279 } 280 281 di->slew_reg = FAN53555_CONTROL; 282 di->slew_mask = CTL_SLEW_MASK; 283 di->ramp_delay_table = slew_rates; 284 di->n_ramp_values = ARRAY_SIZE(slew_rates); 285 di->vsel_count = FAN53526_NVOLTAGES; 286 287 return 0; 288 } 289 290 static int fan53555_voltages_setup_fairchild(struct fan53555_device_info *di) 291 { 292 /* Init voltage range and step */ 293 switch (di->chip_id) { 294 case FAN53555_CHIP_ID_00: 295 switch (di->chip_rev) { 296 case FAN53555_CHIP_REV_00: 297 di->vsel_min = 600000; 298 di->vsel_step = 10000; 299 break; 300 case FAN53555_CHIP_REV_13: 301 di->vsel_min = 800000; 302 di->vsel_step = 10000; 303 break; 304 default: 305 dev_err(di->dev, 306 "Chip ID %d with rev %d not supported!\n", 307 di->chip_id, di->chip_rev); 308 return -EINVAL; 309 } 310 break; 311 case FAN53555_CHIP_ID_01: 312 case FAN53555_CHIP_ID_03: 313 case FAN53555_CHIP_ID_05: 314 case FAN53555_CHIP_ID_08: 315 di->vsel_min = 600000; 316 di->vsel_step = 10000; 317 break; 318 case FAN53555_CHIP_ID_04: 319 di->vsel_min = 603000; 320 di->vsel_step = 12826; 321 break; 322 default: 323 dev_err(di->dev, 324 "Chip ID %d not supported!\n", di->chip_id); 325 return -EINVAL; 326 } 327 di->slew_reg = FAN53555_CONTROL; 328 di->slew_mask = CTL_SLEW_MASK; 329 di->ramp_delay_table = slew_rates; 330 di->n_ramp_values = ARRAY_SIZE(slew_rates); 331 di->vsel_count = FAN53555_NVOLTAGES; 332 333 return 0; 334 } 335 336 static int fan53555_voltages_setup_rockchip(struct fan53555_device_info *di) 337 { 338 /* Init voltage range and step */ 339 switch (di->chip_id) { 340 case RK8600_CHIP_ID_08: 341 di->vsel_min = 712500; 342 di->vsel_step = 12500; 343 break; 344 default: 345 dev_err(di->dev, 346 "Chip ID %d not supported!\n", di->chip_id); 347 return -EINVAL; 348 } 349 di->slew_reg = FAN53555_CONTROL; 350 di->slew_mask = CTL_SLEW_MASK; 351 di->ramp_delay_table = slew_rates; 352 di->n_ramp_values = ARRAY_SIZE(slew_rates); 353 di->vsel_count = FAN53555_NVOLTAGES; 354 355 return 0; 356 } 357 358 static int rk8602_voltages_setup_rockchip(struct fan53555_device_info *di) 359 { 360 /* Init voltage range and step */ 361 switch (di->chip_id) { 362 case RK8602_CHIP_ID_10: 363 di->vsel_min = 500000; 364 di->vsel_step = 6250; 365 break; 366 default: 367 dev_err(di->dev, 368 "Chip ID %d not supported!\n", di->chip_id); 369 return -EINVAL; 370 } 371 di->slew_reg = FAN53555_CONTROL; 372 di->slew_mask = CTL_SLEW_MASK; 373 di->ramp_delay_table = slew_rates; 374 di->n_ramp_values = ARRAY_SIZE(slew_rates); 375 di->vsel_count = RK8602_NVOLTAGES; 376 377 return 0; 378 } 379 380 static int fan53555_voltages_setup_silergy(struct fan53555_device_info *di) 381 { 382 /* Init voltage range and step */ 383 switch (di->chip_id) { 384 case SILERGY_SYR82X: 385 case SILERGY_SYR83X: 386 di->vsel_min = 712500; 387 di->vsel_step = 12500; 388 break; 389 default: 390 dev_err(di->dev, 391 "Chip ID %d not supported!\n", di->chip_id); 392 return -EINVAL; 393 } 394 di->slew_reg = FAN53555_CONTROL; 395 di->slew_mask = CTL_SLEW_MASK; 396 di->ramp_delay_table = slew_rates; 397 di->n_ramp_values = ARRAY_SIZE(slew_rates); 398 di->vsel_count = FAN53555_NVOLTAGES; 399 400 return 0; 401 } 402 403 static int fan53526_voltages_setup_tcs(struct fan53555_device_info *di) 404 { 405 switch (di->chip_id) { 406 case TCS4525_CHIP_ID_12: 407 case TCS4526_CHIP_ID_00: 408 di->slew_reg = TCS4525_TIME; 409 di->slew_mask = TCS_SLEW_MASK; 410 di->ramp_delay_table = tcs_slew_rates; 411 di->n_ramp_values = ARRAY_SIZE(tcs_slew_rates); 412 413 /* Init voltage range and step */ 414 di->vsel_min = 600000; 415 di->vsel_step = 6250; 416 di->vsel_count = FAN53526_NVOLTAGES; 417 break; 418 default: 419 dev_err(di->dev, "Chip ID %d not supported!\n", di->chip_id); 420 return -EINVAL; 421 } 422 423 return 0; 424 } 425 426 /* For 00,01,03,05 options: 427 * VOUT = 0.60V + NSELx * 10mV, from 0.60 to 1.23V. 428 * For 04 option: 429 * VOUT = 0.603V + NSELx * 12.826mV, from 0.603 to 1.411V. 430 * */ 431 static int fan53555_device_setup(struct fan53555_device_info *di, 432 struct fan53555_platform_data *pdata) 433 { 434 int ret = 0; 435 436 /* Setup voltage control register */ 437 switch (di->vendor) { 438 case FAN53526_VENDOR_FAIRCHILD: 439 case FAN53555_VENDOR_FAIRCHILD: 440 case FAN53555_VENDOR_ROCKCHIP: 441 case FAN53555_VENDOR_SILERGY: 442 switch (pdata->sleep_vsel_id) { 443 case FAN53555_VSEL_ID_0: 444 di->sleep_reg = FAN53555_VSEL0; 445 di->vol_reg = FAN53555_VSEL1; 446 break; 447 case FAN53555_VSEL_ID_1: 448 di->sleep_reg = FAN53555_VSEL1; 449 di->vol_reg = FAN53555_VSEL0; 450 break; 451 default: 452 dev_err(di->dev, "Invalid VSEL ID!\n"); 453 return -EINVAL; 454 } 455 di->sleep_en_reg = di->sleep_reg; 456 di->en_reg = di->vol_reg; 457 break; 458 case RK8602_VENDOR_ROCKCHIP: 459 switch (pdata->sleep_vsel_id) { 460 case FAN53555_VSEL_ID_0: 461 di->sleep_reg = RK8602_VSEL0; 462 di->vol_reg = RK8602_VSEL1; 463 di->sleep_en_reg = FAN53555_VSEL0; 464 di->en_reg = FAN53555_VSEL1; 465 break; 466 case FAN53555_VSEL_ID_1: 467 di->sleep_reg = RK8602_VSEL1; 468 di->vol_reg = RK8602_VSEL0; 469 di->sleep_en_reg = FAN53555_VSEL1; 470 di->en_reg = FAN53555_VSEL0; 471 break; 472 default: 473 dev_err(di->dev, "Invalid VSEL ID!\n"); 474 return -EINVAL; 475 } 476 break; 477 case FAN53526_VENDOR_TCS: 478 switch (pdata->sleep_vsel_id) { 479 case FAN53555_VSEL_ID_0: 480 di->sleep_reg = TCS4525_VSEL0; 481 di->vol_reg = TCS4525_VSEL1; 482 break; 483 case FAN53555_VSEL_ID_1: 484 di->sleep_reg = TCS4525_VSEL1; 485 di->vol_reg = TCS4525_VSEL0; 486 break; 487 default: 488 dev_err(di->dev, "Invalid VSEL ID!\n"); 489 return -EINVAL; 490 } 491 di->sleep_en_reg = di->sleep_reg; 492 di->en_reg = di->vol_reg; 493 break; 494 default: 495 dev_err(di->dev, "vendor %d not supported!\n", di->vendor); 496 return -EINVAL; 497 } 498 499 /* Setup mode control register */ 500 switch (di->vendor) { 501 case FAN53526_VENDOR_FAIRCHILD: 502 di->mode_reg = FAN53555_CONTROL; 503 504 switch (pdata->sleep_vsel_id) { 505 case FAN53555_VSEL_ID_0: 506 di->mode_mask = CTL_MODE_VSEL1_MODE; 507 break; 508 case FAN53555_VSEL_ID_1: 509 di->mode_mask = CTL_MODE_VSEL0_MODE; 510 break; 511 } 512 break; 513 case FAN53555_VENDOR_FAIRCHILD: 514 case FAN53555_VENDOR_ROCKCHIP: 515 case FAN53555_VENDOR_SILERGY: 516 di->mode_reg = di->vol_reg; 517 di->mode_mask = VSEL_MODE; 518 break; 519 case RK8602_VENDOR_ROCKCHIP: 520 di->mode_mask = VSEL_MODE; 521 522 switch (pdata->sleep_vsel_id) { 523 case FAN53555_VSEL_ID_0: 524 di->mode_reg = FAN53555_VSEL1; 525 break; 526 case FAN53555_VSEL_ID_1: 527 di->mode_reg = FAN53555_VSEL0; 528 break; 529 } 530 break; 531 case FAN53526_VENDOR_TCS: 532 di->mode_reg = TCS4525_COMMAND; 533 534 switch (pdata->sleep_vsel_id) { 535 case FAN53555_VSEL_ID_0: 536 di->mode_mask = TCS_VSEL1_MODE; 537 break; 538 case FAN53555_VSEL_ID_1: 539 di->mode_mask = TCS_VSEL0_MODE; 540 break; 541 } 542 break; 543 default: 544 dev_err(di->dev, "vendor %d not supported!\n", di->vendor); 545 return -EINVAL; 546 } 547 548 /* Setup voltage range */ 549 switch (di->vendor) { 550 case FAN53526_VENDOR_FAIRCHILD: 551 ret = fan53526_voltages_setup_fairchild(di); 552 break; 553 case FAN53555_VENDOR_FAIRCHILD: 554 ret = fan53555_voltages_setup_fairchild(di); 555 break; 556 case FAN53555_VENDOR_ROCKCHIP: 557 ret = fan53555_voltages_setup_rockchip(di); 558 break; 559 case RK8602_VENDOR_ROCKCHIP: 560 ret = rk8602_voltages_setup_rockchip(di); 561 break; 562 case FAN53555_VENDOR_SILERGY: 563 ret = fan53555_voltages_setup_silergy(di); 564 break; 565 case FAN53526_VENDOR_TCS: 566 ret = fan53526_voltages_setup_tcs(di); 567 break; 568 default: 569 dev_err(di->dev, "vendor %d not supported!\n", di->vendor); 570 return -EINVAL; 571 } 572 573 return ret; 574 } 575 576 static int fan53555_regulator_register(struct fan53555_device_info *di, 577 struct regulator_config *config) 578 { 579 struct regulator_desc *rdesc = &di->desc; 580 struct regulator_dev *rdev; 581 582 rdesc->name = "fan53555-reg"; 583 rdesc->supply_name = "vin"; 584 rdesc->ops = &fan53555_regulator_ops; 585 rdesc->type = REGULATOR_VOLTAGE; 586 rdesc->n_voltages = di->vsel_count; 587 rdesc->enable_reg = di->en_reg; 588 rdesc->enable_mask = VSEL_BUCK_EN; 589 rdesc->min_uV = di->vsel_min; 590 rdesc->uV_step = di->vsel_step; 591 rdesc->vsel_reg = di->vol_reg; 592 rdesc->vsel_mask = BIT(fls(di->vsel_count - 1)) - 1; 593 rdesc->ramp_reg = di->slew_reg; 594 rdesc->ramp_mask = di->slew_mask; 595 rdesc->ramp_delay_table = di->ramp_delay_table; 596 rdesc->n_ramp_values = di->n_ramp_values; 597 rdesc->owner = THIS_MODULE; 598 599 rdev = devm_regulator_register(di->dev, &di->desc, config); 600 return PTR_ERR_OR_ZERO(rdev); 601 } 602 603 static const struct regmap_config fan53555_regmap_config = { 604 .reg_bits = 8, 605 .val_bits = 8, 606 }; 607 608 static struct fan53555_platform_data *fan53555_parse_dt(struct device *dev, 609 struct device_node *np, 610 const struct regulator_desc *desc) 611 { 612 struct fan53555_platform_data *pdata; 613 int ret; 614 u32 tmp; 615 616 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); 617 if (!pdata) 618 return NULL; 619 620 pdata->regulator = of_get_regulator_init_data(dev, np, desc); 621 622 ret = of_property_read_u32(np, "fcs,suspend-voltage-selector", 623 &tmp); 624 if (!ret) 625 pdata->sleep_vsel_id = tmp; 626 627 return pdata; 628 } 629 630 static const struct of_device_id __maybe_unused fan53555_dt_ids[] = { 631 { 632 .compatible = "fcs,fan53526", 633 .data = (void *)FAN53526_VENDOR_FAIRCHILD, 634 }, { 635 .compatible = "fcs,fan53555", 636 .data = (void *)FAN53555_VENDOR_FAIRCHILD 637 }, { 638 .compatible = "rockchip,rk8600", 639 .data = (void *)FAN53555_VENDOR_ROCKCHIP 640 }, { 641 .compatible = "rockchip,rk8602", 642 .data = (void *)RK8602_VENDOR_ROCKCHIP 643 }, { 644 .compatible = "silergy,syr827", 645 .data = (void *)FAN53555_VENDOR_SILERGY, 646 }, { 647 .compatible = "silergy,syr828", 648 .data = (void *)FAN53555_VENDOR_SILERGY, 649 }, { 650 .compatible = "tcs,tcs4525", 651 .data = (void *)FAN53526_VENDOR_TCS 652 }, { 653 .compatible = "tcs,tcs4526", 654 .data = (void *)FAN53526_VENDOR_TCS 655 }, 656 { } 657 }; 658 MODULE_DEVICE_TABLE(of, fan53555_dt_ids); 659 660 static int fan53555_regulator_probe(struct i2c_client *client) 661 { 662 const struct i2c_device_id *id = i2c_client_get_device_id(client); 663 struct device_node *np = client->dev.of_node; 664 struct fan53555_device_info *di; 665 struct fan53555_platform_data *pdata; 666 struct regulator_config config = { }; 667 struct regmap *regmap; 668 unsigned int val; 669 int ret; 670 671 di = devm_kzalloc(&client->dev, sizeof(struct fan53555_device_info), 672 GFP_KERNEL); 673 if (!di) 674 return -ENOMEM; 675 676 pdata = dev_get_platdata(&client->dev); 677 if (!pdata) 678 pdata = fan53555_parse_dt(&client->dev, np, &di->desc); 679 680 if (!pdata || !pdata->regulator) 681 return dev_err_probe(&client->dev, -ENODEV, 682 "Platform data not found!\n"); 683 684 di->regulator = pdata->regulator; 685 if (client->dev.of_node) { 686 di->vendor = 687 (unsigned long)of_device_get_match_data(&client->dev); 688 } else { 689 /* if no ramp constraint set, get the pdata ramp_delay */ 690 if (!di->regulator->constraints.ramp_delay) { 691 if (pdata->slew_rate >= ARRAY_SIZE(slew_rates)) 692 return dev_err_probe(&client->dev, -EINVAL, 693 "Invalid slew_rate\n"); 694 695 di->regulator->constraints.ramp_delay 696 = slew_rates[pdata->slew_rate]; 697 } 698 699 di->vendor = id->driver_data; 700 } 701 702 regmap = devm_regmap_init_i2c(client, &fan53555_regmap_config); 703 if (IS_ERR(regmap)) 704 return dev_err_probe(&client->dev, PTR_ERR(regmap), 705 "Failed to allocate regmap!\n"); 706 707 di->dev = &client->dev; 708 i2c_set_clientdata(client, di); 709 /* Get chip ID */ 710 ret = regmap_read(regmap, FAN53555_ID1, &val); 711 if (ret < 0) 712 return dev_err_probe(&client->dev, ret, "Failed to get chip ID!\n"); 713 714 di->chip_id = val & DIE_ID; 715 /* Get chip revision */ 716 ret = regmap_read(regmap, FAN53555_ID2, &val); 717 if (ret < 0) 718 return dev_err_probe(&client->dev, ret, "Failed to get chip Rev!\n"); 719 720 di->chip_rev = val & DIE_REV; 721 dev_info(&client->dev, "FAN53555 Option[%d] Rev[%d] Detected!\n", 722 di->chip_id, di->chip_rev); 723 /* Device init */ 724 ret = fan53555_device_setup(di, pdata); 725 if (ret < 0) 726 return dev_err_probe(&client->dev, ret, "Failed to setup device!\n"); 727 728 /* Register regulator */ 729 config.dev = di->dev; 730 config.init_data = di->regulator; 731 config.regmap = regmap; 732 config.driver_data = di; 733 config.of_node = np; 734 735 ret = fan53555_regulator_register(di, &config); 736 if (ret < 0) 737 dev_err_probe(&client->dev, ret, "Failed to register regulator!\n"); 738 739 return ret; 740 } 741 742 static const struct i2c_device_id fan53555_id[] = { 743 { 744 .name = "fan53526", 745 .driver_data = FAN53526_VENDOR_FAIRCHILD 746 }, { 747 .name = "fan53555", 748 .driver_data = FAN53555_VENDOR_FAIRCHILD 749 }, { 750 .name = "rk8600", 751 .driver_data = FAN53555_VENDOR_ROCKCHIP 752 }, { 753 .name = "rk8602", 754 .driver_data = RK8602_VENDOR_ROCKCHIP 755 }, { 756 .name = "syr827", 757 .driver_data = FAN53555_VENDOR_SILERGY 758 }, { 759 .name = "syr828", 760 .driver_data = FAN53555_VENDOR_SILERGY 761 }, { 762 .name = "tcs4525", 763 .driver_data = FAN53526_VENDOR_TCS 764 }, { 765 .name = "tcs4526", 766 .driver_data = FAN53526_VENDOR_TCS 767 }, 768 { }, 769 }; 770 MODULE_DEVICE_TABLE(i2c, fan53555_id); 771 772 static struct i2c_driver fan53555_regulator_driver = { 773 .driver = { 774 .name = "fan53555-regulator", 775 .probe_type = PROBE_PREFER_ASYNCHRONOUS, 776 .of_match_table = of_match_ptr(fan53555_dt_ids), 777 }, 778 .probe = fan53555_regulator_probe, 779 .id_table = fan53555_id, 780 }; 781 782 module_i2c_driver(fan53555_regulator_driver); 783 784 MODULE_AUTHOR("Yunfan Zhang <yfzhang@marvell.com>"); 785 MODULE_DESCRIPTION("FAN53555 regulator driver"); 786 MODULE_LICENSE("GPL v2"); 787