drivers/regulator/fan53555.c

   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/module.h>
  12 #include <linux/param.h>
  13 #include <linux/err.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/regulator/driver.h>
  16 #include <linux/regulator/machine.h>
  17 #include <linux/regulator/of_regulator.h>
  18 #include <linux/of_device.h>
  19 #include <linux/i2c.h>
  20 #include <linux/slab.h>
  21 #include <linux/regmap.h>
  22 #include <linux/regulator/fan53555.h>
  23
  24 /* Voltage setting */
  25 #define FAN53555_VSEL0          0x00
  26 #define FAN53555_VSEL1          0x01
  27
  28 #define TCS4525_VSEL0           0x11
  29 #define TCS4525_VSEL1           0x10
  30 #define TCS4525_TIME            0x13
  31 #define TCS4525_COMMAND         0x14
  32
  33 /* Control register */
  34 #define FAN53555_CONTROL        0x02
  35 /* IC Type */
  36 #define FAN53555_ID1            0x03
  37 /* IC mask version */
  38 #define FAN53555_ID2            0x04
  39 /* Monitor register */
  40 #define FAN53555_MONITOR        0x05
  41
  42 /* VSEL bit definitions */
  43 #define VSEL_BUCK_EN    (1 << 7)
  44 #define VSEL_MODE               (1 << 6)
  45 /* Chip ID and Verison */
  46 #define DIE_ID          0x0F    /* ID1 */
  47 #define DIE_REV         0x0F    /* ID2 */
  48 /* Control bit definitions */
  49 #define CTL_OUTPUT_DISCHG       (1 << 7)
  50 #define CTL_SLEW_MASK           (0x7 << 4)
  51 #define CTL_SLEW_SHIFT          4
  52 #define CTL_RESET                       (1 << 2)
  53 #define CTL_MODE_VSEL0_MODE     BIT(0)
  54 #define CTL_MODE_VSEL1_MODE     BIT(1)
  55
  56 #define FAN53555_NVOLTAGES      64      /* Numbers of voltages */
  57 #define FAN53526_NVOLTAGES      128
  58
  59 #define TCS_VSEL0_MODE          (1 << 7)
  60 #define TCS_VSEL1_MODE          (1 << 6)
  61
  62 #define TCS_SLEW_SHIFT          3
  63 #define TCS_SLEW_MASK           (0x3 < 3)
  64
  65 enum fan53555_vendor {
  66         FAN53526_VENDOR_FAIRCHILD = 0,
  67         FAN53555_VENDOR_FAIRCHILD,
  68         FAN53555_VENDOR_SILERGY,
  69         FAN53526_VENDOR_TCS,
  70 };
  71
  72 enum {
  73         FAN53526_CHIP_ID_01 = 1,
  74 };
  75
  76 enum {
  77         FAN53526_CHIP_REV_08 = 8,
  78 };
  79
  80 /* IC Type */
  81 enum {
  82         FAN53555_CHIP_ID_00 = 0,
  83         FAN53555_CHIP_ID_01,
  84         FAN53555_CHIP_ID_02,
  85         FAN53555_CHIP_ID_03,
  86         FAN53555_CHIP_ID_04,
  87         FAN53555_CHIP_ID_05,
  88         FAN53555_CHIP_ID_08 = 8,
  89 };
  90
  91 enum {
  92         TCS4525_CHIP_ID_12 = 12,
  93 };
  94
  95 enum {
  96         TCS4526_CHIP_ID_00 = 0,
  97 };
  98
  99 /* IC mask revision */
 100 enum {
 101         FAN53555_CHIP_REV_00 = 0x3,
 102         FAN53555_CHIP_REV_13 = 0xf,
 103 };
 104
 105 enum {
 106         SILERGY_SYR82X = 8,
 107         SILERGY_SYR83X = 9,
 108 };
 109
 110 struct fan53555_device_info {
 111         enum fan53555_vendor vendor;
 112         struct device *dev;
 113         struct regulator_desc desc;
 114         struct regulator_init_data *regulator;
 115         /* IC Type and Rev */
 116         int chip_id;
 117         int chip_rev;
 118         /* Voltage setting register */
 119         unsigned int vol_reg;
 120         unsigned int sleep_reg;
 121         /* Voltage range and step(linear) */
 122         unsigned int vsel_min;
 123         unsigned int vsel_step;
 124         unsigned int vsel_count;
 125         /* Mode */
 126         unsigned int mode_reg;
 127         unsigned int mode_mask;
 128         /* Sleep voltage cache */
 129         unsigned int sleep_vol_cache;
 130         /* Slew rate */
 131         unsigned int slew_reg;
 132         unsigned int slew_mask;
 133         const unsigned int *ramp_delay_table;
 134         unsigned int n_ramp_values;
 135         unsigned int slew_rate;
 136 };
 137
 138 static int fan53555_set_suspend_voltage(struct regulator_dev *rdev, int uV)
 139 {
 140         struct fan53555_device_info *di = rdev_get_drvdata(rdev);
 141         int ret;
 142
 143         if (di->sleep_vol_cache == uV)
 144                 return 0;
 145         ret = regulator_map_voltage_linear(rdev, uV, uV);
 146         if (ret < 0)
 147                 return ret;
 148         ret = regmap_update_bits(rdev->regmap, di->sleep_reg,
 149                                  di->desc.vsel_mask, ret);
 150         if (ret < 0)
 151                 return ret;
 152         /* Cache the sleep voltage setting.
 153          * Might not be the real voltage which is rounded */
 154         di->sleep_vol_cache = uV;
 155
 156         return 0;
 157 }
 158
 159 static int fan53555_set_suspend_enable(struct regulator_dev *rdev)
 160 {
 161         struct fan53555_device_info *di = rdev_get_drvdata(rdev);
 162
 163         return regmap_update_bits(rdev->regmap, di->sleep_reg,
 164                                   VSEL_BUCK_EN, VSEL_BUCK_EN);
 165 }
 166
 167 static int fan53555_set_suspend_disable(struct regulator_dev *rdev)
 168 {
 169         struct fan53555_device_info *di = rdev_get_drvdata(rdev);
 170
 171         return regmap_update_bits(rdev->regmap, di->sleep_reg,
 172                                   VSEL_BUCK_EN, 0);
 173 }
 174
 175 static int fan53555_set_mode(struct regulator_dev *rdev, unsigned int mode)
 176 {
 177         struct fan53555_device_info *di = rdev_get_drvdata(rdev);
 178
 179         switch (mode) {
 180         case REGULATOR_MODE_FAST:
 181                 regmap_update_bits(rdev->regmap, di->mode_reg,
 182                                    di->mode_mask, di->mode_mask);
 183                 break;
 184         case REGULATOR_MODE_NORMAL:
 185                 regmap_update_bits(rdev->regmap, di->vol_reg, di->mode_mask, 0);
 186                 break;
 187         default:
 188                 return -EINVAL;
 189         }
 190         return 0;
 191 }
 192
 193 static unsigned int fan53555_get_mode(struct regulator_dev *rdev)
 194 {
 195         struct fan53555_device_info *di = rdev_get_drvdata(rdev);
 196         unsigned int val;
 197         int ret = 0;
 198
 199         ret = regmap_read(rdev->regmap, di->mode_reg, &val);
 200         if (ret < 0)
 201                 return ret;
 202         if (val & di->mode_mask)
 203                 return REGULATOR_MODE_FAST;
 204         else
 205                 return REGULATOR_MODE_NORMAL;
 206 }
 207
 208 static const unsigned int slew_rates[] = {
 209         64000,
 210         32000,
 211         16000,
 212          8000,
 213          4000,
 214          2000,
 215          1000,
 216           500,
 217 };
 218
 219 static const unsigned int tcs_slew_rates[] = {
 220         18700,
 221          9300,
 222          4600,
 223          2300,
 224 };
 225
 226 static const struct regulator_ops fan53555_regulator_ops = {
 227         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 228         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 229         .set_voltage_time_sel = regulator_set_voltage_time_sel,
 230         .map_voltage = regulator_map_voltage_linear,
 231         .list_voltage = regulator_list_voltage_linear,
 232         .set_suspend_voltage = fan53555_set_suspend_voltage,
 233         .enable = regulator_enable_regmap,
 234         .disable = regulator_disable_regmap,
 235         .is_enabled = regulator_is_enabled_regmap,
 236         .set_mode = fan53555_set_mode,
 237         .get_mode = fan53555_get_mode,
 238         .set_ramp_delay = regulator_set_ramp_delay_regmap,
 239         .set_suspend_enable = fan53555_set_suspend_enable,
 240         .set_suspend_disable = fan53555_set_suspend_disable,
 241 };
 242
 243 static int fan53526_voltages_setup_fairchild(struct fan53555_device_info *di)
 244 {
 245         /* Init voltage range and step */
 246         switch (di->chip_id) {
 247         case FAN53526_CHIP_ID_01:
 248                 switch (di->chip_rev) {
 249                 case FAN53526_CHIP_REV_08:
 250                         di->vsel_min = 600000;
 251                         di->vsel_step = 6250;
 252                         break;
 253                 default:
 254                         dev_err(di->dev,
 255                                 "Chip ID %d with rev %d not supported!\n",
 256                                 di->chip_id, di->chip_rev);
 257                         return -EINVAL;
 258                 }
 259                 break;
 260         default:
 261                 dev_err(di->dev,
 262                         "Chip ID %d not supported!\n", di->chip_id);
 263                 return -EINVAL;
 264         }
 265
 266         di->slew_reg = FAN53555_CONTROL;
 267         di->slew_mask = CTL_SLEW_MASK;
 268         di->ramp_delay_table = slew_rates;
 269         di->n_ramp_values = ARRAY_SIZE(slew_rates);
 270         di->vsel_count = FAN53526_NVOLTAGES;
 271
 272         return 0;
 273 }
 274
 275 static int fan53555_voltages_setup_fairchild(struct fan53555_device_info *di)
 276 {
 277         /* Init voltage range and step */
 278         switch (di->chip_id) {
 279         case FAN53555_CHIP_ID_00:
 280                 switch (di->chip_rev) {
 281                 case FAN53555_CHIP_REV_00:
 282                         di->vsel_min = 600000;
 283                         di->vsel_step = 10000;
 284                         break;
 285                 case FAN53555_CHIP_REV_13:
 286                         di->vsel_min = 800000;
 287                         di->vsel_step = 10000;
 288                         break;
 289                 default:
 290                         dev_err(di->dev,
 291                                 "Chip ID %d with rev %d not supported!\n",
 292                                 di->chip_id, di->chip_rev);
 293                         return -EINVAL;
 294                 }
 295                 break;
 296         case FAN53555_CHIP_ID_01:
 297         case FAN53555_CHIP_ID_03:
 298         case FAN53555_CHIP_ID_05:
 299         case FAN53555_CHIP_ID_08:
 300                 di->vsel_min = 600000;
 301                 di->vsel_step = 10000;
 302                 break;
 303         case FAN53555_CHIP_ID_04:
 304                 di->vsel_min = 603000;
 305                 di->vsel_step = 12826;
 306                 break;
 307         default:
 308                 dev_err(di->dev,
 309                         "Chip ID %d not supported!\n", di->chip_id);
 310                 return -EINVAL;
 311         }
 312         di->slew_reg = FAN53555_CONTROL;
 313         di->slew_mask = CTL_SLEW_MASK;
 314         di->ramp_delay_table = slew_rates;
 315         di->n_ramp_values = ARRAY_SIZE(slew_rates);
 316         di->vsel_count = FAN53555_NVOLTAGES;
 317
 318         return 0;
 319 }
 320
 321 static int fan53555_voltages_setup_silergy(struct fan53555_device_info *di)
 322 {
 323         /* Init voltage range and step */
 324         switch (di->chip_id) {
 325         case SILERGY_SYR82X:
 326         case SILERGY_SYR83X:
 327                 di->vsel_min = 712500;
 328                 di->vsel_step = 12500;
 329                 break;
 330         default:
 331                 dev_err(di->dev,
 332                         "Chip ID %d not supported!\n", di->chip_id);
 333                 return -EINVAL;
 334         }
 335         di->slew_reg = FAN53555_CONTROL;
 336         di->slew_mask = CTL_SLEW_MASK;
 337         di->ramp_delay_table = slew_rates;
 338         di->n_ramp_values = ARRAY_SIZE(slew_rates);
 339         di->vsel_count = FAN53555_NVOLTAGES;
 340
 341         return 0;
 342 }
 343
 344 static int fan53526_voltages_setup_tcs(struct fan53555_device_info *di)
 345 {
 346         switch (di->chip_id) {
 347         case TCS4525_CHIP_ID_12:
 348         case TCS4526_CHIP_ID_00:
 349                 di->slew_reg = TCS4525_TIME;
 350                 di->slew_mask = TCS_SLEW_MASK;
 351                 di->ramp_delay_table = tcs_slew_rates;
 352                 di->n_ramp_values = ARRAY_SIZE(tcs_slew_rates);
 353
 354                 /* Init voltage range and step */
 355                 di->vsel_min = 600000;
 356                 di->vsel_step = 6250;
 357                 di->vsel_count = FAN53526_NVOLTAGES;
 358                 break;
 359         default:
 360                 dev_err(di->dev, "Chip ID %d not supported!\n", di->chip_id);
 361                 return -EINVAL;
 362         }
 363
 364         return 0;
 365 }
 366
 367 /* For 00,01,03,05 options:
 368  * VOUT = 0.60V + NSELx * 10mV, from 0.60 to 1.23V.
 369  * For 04 option:
 370  * VOUT = 0.603V + NSELx * 12.826mV, from 0.603 to 1.411V.
 371  * */
 372 static int fan53555_device_setup(struct fan53555_device_info *di,
 373                                 struct fan53555_platform_data *pdata)
 374 {
 375         int ret = 0;
 376
 377         /* Setup voltage control register */
 378         switch (di->vendor) {
 379         case FAN53526_VENDOR_FAIRCHILD:
 380         case FAN53555_VENDOR_FAIRCHILD:
 381         case FAN53555_VENDOR_SILERGY:
 382                 switch (pdata->sleep_vsel_id) {
 383                 case FAN53555_VSEL_ID_0:
 384                         di->sleep_reg = FAN53555_VSEL0;
 385                         di->vol_reg = FAN53555_VSEL1;
 386                         break;
 387                 case FAN53555_VSEL_ID_1:
 388                         di->sleep_reg = FAN53555_VSEL1;
 389                         di->vol_reg = FAN53555_VSEL0;
 390                         break;
 391                 default:
 392                         dev_err(di->dev, "Invalid VSEL ID!\n");
 393                         return -EINVAL;
 394                 }
 395                 break;
 396         case FAN53526_VENDOR_TCS:
 397                 switch (pdata->sleep_vsel_id) {
 398                 case FAN53555_VSEL_ID_0:
 399                         di->sleep_reg = TCS4525_VSEL0;
 400                         di->vol_reg = TCS4525_VSEL1;
 401                         break;
 402                 case FAN53555_VSEL_ID_1:
 403                         di->sleep_reg = TCS4525_VSEL1;
 404                         di->vol_reg = TCS4525_VSEL0;
 405                         break;
 406                 default:
 407                         dev_err(di->dev, "Invalid VSEL ID!\n");
 408                         return -EINVAL;
 409                 }
 410                 break;
 411         default:
 412                 dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
 413                 return -EINVAL;
 414         }
 415
 416         /* Setup mode control register */
 417         switch (di->vendor) {
 418         case FAN53526_VENDOR_FAIRCHILD:
 419                 di->mode_reg = FAN53555_CONTROL;
 420
 421                 switch (pdata->sleep_vsel_id) {
 422                 case FAN53555_VSEL_ID_0:
 423                         di->mode_mask = CTL_MODE_VSEL1_MODE;
 424                         break;
 425                 case FAN53555_VSEL_ID_1:
 426                         di->mode_mask = CTL_MODE_VSEL0_MODE;
 427                         break;
 428                 }
 429                 break;
 430         case FAN53555_VENDOR_FAIRCHILD:
 431         case FAN53555_VENDOR_SILERGY:
 432                 di->mode_reg = di->vol_reg;
 433                 di->mode_mask = VSEL_MODE;
 434                 break;
 435         case FAN53526_VENDOR_TCS:
 436                 di->mode_reg = TCS4525_COMMAND;
 437
 438                 switch (pdata->sleep_vsel_id) {
 439                 case FAN53555_VSEL_ID_0:
 440                         di->mode_mask = TCS_VSEL1_MODE;
 441                         break;
 442                 case FAN53555_VSEL_ID_1:
 443                         di->mode_mask = TCS_VSEL0_MODE;
 444                         break;
 445                 }
 446                 break;
 447         default:
 448                 dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
 449                 return -EINVAL;
 450         }
 451
 452         /* Setup voltage range */
 453         switch (di->vendor) {
 454         case FAN53526_VENDOR_FAIRCHILD:
 455                 ret = fan53526_voltages_setup_fairchild(di);
 456                 break;
 457         case FAN53555_VENDOR_FAIRCHILD:
 458                 ret = fan53555_voltages_setup_fairchild(di);
 459                 break;
 460         case FAN53555_VENDOR_SILERGY:
 461                 ret = fan53555_voltages_setup_silergy(di);
 462                 break;
 463         case FAN53526_VENDOR_TCS:
 464                 ret = fan53526_voltages_setup_tcs(di);
 465                 break;
 466         default:
 467                 dev_err(di->dev, "vendor %d not supported!\n", di->vendor);
 468                 return -EINVAL;
 469         }
 470
 471         return ret;
 472 }
 473
 474 static int fan53555_regulator_register(struct fan53555_device_info *di,
 475                         struct regulator_config *config)
 476 {
 477         struct regulator_desc *rdesc = &di->desc;
 478         struct regulator_dev *rdev;
 479
 480         rdesc->name = "fan53555-reg";
 481         rdesc->supply_name = "vin";
 482         rdesc->ops = &fan53555_regulator_ops;
 483         rdesc->type = REGULATOR_VOLTAGE;
 484         rdesc->n_voltages = di->vsel_count;
 485         rdesc->enable_reg = di->vol_reg;
 486         rdesc->enable_mask = VSEL_BUCK_EN;
 487         rdesc->min_uV = di->vsel_min;
 488         rdesc->uV_step = di->vsel_step;
 489         rdesc->vsel_reg = di->vol_reg;
 490         rdesc->vsel_mask = di->vsel_count - 1;
 491         rdesc->ramp_reg = di->slew_reg;
 492         rdesc->ramp_mask = di->slew_mask;
 493         rdesc->ramp_delay_table = di->ramp_delay_table;
 494         rdesc->n_ramp_values = di->n_ramp_values;
 495         rdesc->owner = THIS_MODULE;
 496
 497         rdev = devm_regulator_register(di->dev, &di->desc, config);
 498         return PTR_ERR_OR_ZERO(rdev);
 499 }
 500
 501 static const struct regmap_config fan53555_regmap_config = {
 502         .reg_bits = 8,
 503         .val_bits = 8,
 504 };
 505
 506 static struct fan53555_platform_data *fan53555_parse_dt(struct device *dev,
 507                                               struct device_node *np,
 508                                               const struct regulator_desc *desc)
 509 {
 510         struct fan53555_platform_data *pdata;
 511         int ret;
 512         u32 tmp;
 513
 514         pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
 515         if (!pdata)
 516                 return NULL;
 517
 518         pdata->regulator = of_get_regulator_init_data(dev, np, desc);
 519
 520         ret = of_property_read_u32(np, "fcs,suspend-voltage-selector",
 521                                    &tmp);
 522         if (!ret)
 523                 pdata->sleep_vsel_id = tmp;
 524
 525         return pdata;
 526 }
 527
 528 static const struct of_device_id __maybe_unused fan53555_dt_ids[] = {
 529         {
 530                 .compatible = "fcs,fan53526",
 531                 .data = (void *)FAN53526_VENDOR_FAIRCHILD,
 532         }, {
 533                 .compatible = "fcs,fan53555",
 534                 .data = (void *)FAN53555_VENDOR_FAIRCHILD
 535         }, {
 536                 .compatible = "silergy,syr827",
 537                 .data = (void *)FAN53555_VENDOR_SILERGY,
 538         }, {
 539                 .compatible = "silergy,syr828",
 540                 .data = (void *)FAN53555_VENDOR_SILERGY,
 541         }, {
 542                 .compatible = "tcs,tcs4525",
 543                 .data = (void *)FAN53526_VENDOR_TCS
 544         }, {
 545                 .compatible = "tcs,tcs4526",
 546                 .data = (void *)FAN53526_VENDOR_TCS
 547         },
 548         { }
 549 };
 550 MODULE_DEVICE_TABLE(of, fan53555_dt_ids);
 551
 552 static int fan53555_regulator_probe(struct i2c_client *client,
 553                                 const struct i2c_device_id *id)
 554 {
 555         struct device_node *np = client->dev.of_node;
 556         struct fan53555_device_info *di;
 557         struct fan53555_platform_data *pdata;
 558         struct regulator_config config = { };
 559         struct regmap *regmap;
 560         unsigned int val;
 561         int ret;
 562
 563         di = devm_kzalloc(&client->dev, sizeof(struct fan53555_device_info),
 564                                         GFP_KERNEL);
 565         if (!di)
 566                 return -ENOMEM;
 567
 568         pdata = dev_get_platdata(&client->dev);
 569         if (!pdata)
 570                 pdata = fan53555_parse_dt(&client->dev, np, &di->desc);
 571
 572         if (!pdata || !pdata->regulator) {
 573                 dev_err(&client->dev, "Platform data not found!\n");
 574                 return -ENODEV;
 575         }
 576
 577         di->regulator = pdata->regulator;
 578         if (client->dev.of_node) {
 579                 di->vendor =
 580                         (unsigned long)of_device_get_match_data(&client->dev);
 581         } else {
 582                 /* if no ramp constraint set, get the pdata ramp_delay */
 583                 if (!di->regulator->constraints.ramp_delay) {
 584                         if (pdata->slew_rate >= ARRAY_SIZE(slew_rates)) {
 585                                 dev_err(&client->dev, "Invalid slew_rate\n");
 586                                 return -EINVAL;
 587                         }
 588
 589                         di->regulator->constraints.ramp_delay
 590                                         = slew_rates[pdata->slew_rate];
 591                 }
 592
 593                 di->vendor = id->driver_data;
 594         }
 595
 596         regmap = devm_regmap_init_i2c(client, &fan53555_regmap_config);
 597         if (IS_ERR(regmap)) {
 598                 dev_err(&client->dev, "Failed to allocate regmap!\n");
 599                 return PTR_ERR(regmap);
 600         }
 601         di->dev = &client->dev;
 602         i2c_set_clientdata(client, di);
 603         /* Get chip ID */
 604         ret = regmap_read(regmap, FAN53555_ID1, &val);
 605         if (ret < 0) {
 606                 dev_err(&client->dev, "Failed to get chip ID!\n");
 607                 return ret;
 608         }
 609         di->chip_id = val & DIE_ID;
 610         /* Get chip revision */
 611         ret = regmap_read(regmap, FAN53555_ID2, &val);
 612         if (ret < 0) {
 613                 dev_err(&client->dev, "Failed to get chip Rev!\n");
 614                 return ret;
 615         }
 616         di->chip_rev = val & DIE_REV;
 617         dev_info(&client->dev, "FAN53555 Option[%d] Rev[%d] Detected!\n",
 618                                 di->chip_id, di->chip_rev);
 619         /* Device init */
 620         ret = fan53555_device_setup(di, pdata);
 621         if (ret < 0) {
 622                 dev_err(&client->dev, "Failed to setup device!\n");
 623                 return ret;
 624         }
 625         /* Register regulator */
 626         config.dev = di->dev;
 627         config.init_data = di->regulator;
 628         config.regmap = regmap;
 629         config.driver_data = di;
 630         config.of_node = np;
 631
 632         ret = fan53555_regulator_register(di, &config);
 633         if (ret < 0)
 634                 dev_err(&client->dev, "Failed to register regulator!\n");
 635         return ret;
 636
 637 }
 638
 639 static const struct i2c_device_id fan53555_id[] = {
 640         {
 641                 .name = "fan53526",
 642                 .driver_data = FAN53526_VENDOR_FAIRCHILD
 643         }, {
 644                 .name = "fan53555",
 645                 .driver_data = FAN53555_VENDOR_FAIRCHILD
 646         }, {
 647                 .name = "syr827",
 648                 .driver_data = FAN53555_VENDOR_SILERGY
 649         }, {
 650                 .name = "syr828",
 651                 .driver_data = FAN53555_VENDOR_SILERGY
 652         }, {
 653                 .name = "tcs4525",
 654                 .driver_data = FAN53526_VENDOR_TCS
 655         }, {
 656                 .name = "tcs4526",
 657                 .driver_data = FAN53526_VENDOR_TCS
 658         },
 659         { },
 660 };
 661 MODULE_DEVICE_TABLE(i2c, fan53555_id);
 662
 663 static struct i2c_driver fan53555_regulator_driver = {
 664         .driver = {
 665                 .name = "fan53555-regulator",
 666                 .of_match_table = of_match_ptr(fan53555_dt_ids),
 667         },
 668         .probe = fan53555_regulator_probe,
 669         .id_table = fan53555_id,
 670 };
 671
 672 module_i2c_driver(fan53555_regulator_driver);
 673
 674 MODULE_AUTHOR("Yunfan Zhang <yfzhang@marvell.com>");
 675 MODULE_DESCRIPTION("FAN53555 regulator driver");
 676 MODULE_LICENSE("GPL v2");