drivers/regulator/pv88080-regulator.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 //
   3 // pv88080-regulator.c - Regulator device driver for PV88080
   4 // Copyright (C) 2016  Powerventure Semiconductor Ltd.
   5
   6 #include <linux/err.h>
   7 #include <linux/i2c.h>
   8 #include <linux/mod_devicetable.h>
   9 #include <linux/module.h>
  10 #include <linux/of.h>
  11 #include <linux/init.h>
  12 #include <linux/slab.h>
  13 #include <linux/regulator/driver.h>
  14 #include <linux/regulator/machine.h>
  15 #include <linux/regmap.h>
  16 #include <linux/irq.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/regulator/of_regulator.h>
  19 #include "pv88080-regulator.h"
  20
  21 #define PV88080_MAX_REGULATORS  4
  22
  23 /* PV88080 REGULATOR IDs */
  24 enum {
  25         /* BUCKs */
  26         PV88080_ID_BUCK1,
  27         PV88080_ID_BUCK2,
  28         PV88080_ID_BUCK3,
  29         PV88080_ID_HVBUCK,
  30 };
  31
  32 struct pv88080_regulator {
  33         struct regulator_desc desc;
  34         unsigned int mode_reg;
  35         unsigned int conf2;
  36         unsigned int conf5;
  37 };
  38
  39 struct pv88080 {
  40         struct device *dev;
  41         struct regmap *regmap;
  42         struct regulator_dev *rdev[PV88080_MAX_REGULATORS];
  43         unsigned long type;
  44         const struct pv88080_compatible_regmap *regmap_config;
  45 };
  46
  47 struct pv88080_buck_voltage {
  48         int min_uV;
  49         int max_uV;
  50         int uV_step;
  51 };
  52
  53 struct pv88080_buck_regmap {
  54         /* REGS */
  55         int buck_enable_reg;
  56         int buck_vsel_reg;
  57         int buck_mode_reg;
  58         int buck_limit_reg;
  59         int buck_vdac_range_reg;
  60         int buck_vrange_gain_reg;
  61         /* MASKS */
  62         int buck_enable_mask;
  63         int buck_vsel_mask;
  64         int buck_limit_mask;
  65 };
  66
  67 struct pv88080_compatible_regmap {
  68         /* BUCK1, 2, 3 */
  69         struct pv88080_buck_regmap buck_regmap[PV88080_MAX_REGULATORS-1];
  70         /* HVBUCK */
  71         int hvbuck_enable_reg;
  72         int hvbuck_vsel_reg;
  73         int hvbuck_enable_mask;
  74         int hvbuck_vsel_mask;
  75 };
  76
  77 static const struct regmap_config pv88080_regmap_config = {
  78         .reg_bits = 8,
  79         .val_bits = 8,
  80 };
  81
  82 /* Current limits array (in uA) for BUCK1, BUCK2, BUCK3.
  83  * Entry indexes corresponds to register values.
  84  */
  85
  86 static const unsigned int pv88080_buck1_limits[] = {
  87         3230000, 5130000, 6960000, 8790000
  88 };
  89
  90 static const unsigned int pv88080_buck23_limits[] = {
  91         1496000, 2393000, 3291000, 4189000
  92 };
  93
  94 static const struct pv88080_buck_voltage pv88080_buck_vol[2] = {
  95         {
  96                 .min_uV = 600000,
  97                 .max_uV = 1393750,
  98                 .uV_step = 6250,
  99         },
 100         {
 101                 .min_uV = 1400000,
 102                 .max_uV = 2193750,
 103                 .uV_step = 6250,
 104         },
 105 };
 106
 107 static const struct pv88080_compatible_regmap pv88080_aa_regs = {
 108         /* BUCK1 */
 109         .buck_regmap[0] = {
 110                 .buck_enable_reg      = PV88080AA_REG_BUCK1_CONF0,
 111                 .buck_vsel_reg        = PV88080AA_REG_BUCK1_CONF0,
 112                 .buck_mode_reg        = PV88080AA_REG_BUCK1_CONF1,
 113                 .buck_limit_reg       = PV88080AA_REG_BUCK1_CONF1,
 114                 .buck_vdac_range_reg  = PV88080AA_REG_BUCK1_CONF2,
 115                 .buck_vrange_gain_reg = PV88080AA_REG_BUCK1_CONF5,
 116                 .buck_enable_mask     = PV88080_BUCK1_EN,
 117                 .buck_vsel_mask       = PV88080_VBUCK1_MASK,
 118                 .buck_limit_mask      = PV88080_BUCK1_ILIM_MASK,
 119         },
 120         /* BUCK2 */
 121         .buck_regmap[1] = {
 122                 .buck_enable_reg      = PV88080AA_REG_BUCK2_CONF0,
 123                 .buck_vsel_reg        = PV88080AA_REG_BUCK2_CONF0,
 124                 .buck_mode_reg        = PV88080AA_REG_BUCK2_CONF1,
 125                 .buck_limit_reg       = PV88080AA_REG_BUCK2_CONF1,
 126                 .buck_vdac_range_reg  = PV88080AA_REG_BUCK2_CONF2,
 127                 .buck_vrange_gain_reg = PV88080AA_REG_BUCK2_CONF5,
 128                 .buck_enable_mask         = PV88080_BUCK2_EN,
 129                 .buck_vsel_mask       = PV88080_VBUCK2_MASK,
 130                 .buck_limit_mask      = PV88080_BUCK2_ILIM_MASK,
 131         },
 132         /* BUCK3 */
 133         .buck_regmap[2] = {
 134                 .buck_enable_reg          = PV88080AA_REG_BUCK3_CONF0,
 135                 .buck_vsel_reg        = PV88080AA_REG_BUCK3_CONF0,
 136                 .buck_mode_reg        = PV88080AA_REG_BUCK3_CONF1,
 137                 .buck_limit_reg       = PV88080AA_REG_BUCK3_CONF1,
 138                 .buck_vdac_range_reg  = PV88080AA_REG_BUCK3_CONF2,
 139                 .buck_vrange_gain_reg = PV88080AA_REG_BUCK3_CONF5,
 140                 .buck_enable_mask         = PV88080_BUCK3_EN,
 141                 .buck_vsel_mask       = PV88080_VBUCK3_MASK,
 142                 .buck_limit_mask      = PV88080_BUCK3_ILIM_MASK,
 143         },
 144         /* HVBUCK */
 145         .hvbuck_enable_reg            = PV88080AA_REG_HVBUCK_CONF2,
 146         .hvbuck_vsel_reg          = PV88080AA_REG_HVBUCK_CONF1,
 147         .hvbuck_enable_mask       = PV88080_HVBUCK_EN,
 148         .hvbuck_vsel_mask         = PV88080_VHVBUCK_MASK,
 149 };
 150
 151 static const struct pv88080_compatible_regmap pv88080_ba_regs = {
 152         /* BUCK1 */
 153         .buck_regmap[0] = {
 154                 .buck_enable_reg          = PV88080BA_REG_BUCK1_CONF0,
 155                 .buck_vsel_reg        = PV88080BA_REG_BUCK1_CONF0,
 156                 .buck_mode_reg        = PV88080BA_REG_BUCK1_CONF1,
 157                 .buck_limit_reg       = PV88080BA_REG_BUCK1_CONF1,
 158                 .buck_vdac_range_reg  = PV88080BA_REG_BUCK1_CONF2,
 159                 .buck_vrange_gain_reg = PV88080BA_REG_BUCK1_CONF5,
 160                 .buck_enable_mask     = PV88080_BUCK1_EN,
 161                 .buck_vsel_mask       = PV88080_VBUCK1_MASK,
 162                 .buck_limit_mask          = PV88080_BUCK1_ILIM_MASK,
 163         },
 164         /* BUCK2 */
 165         .buck_regmap[1] = {
 166                 .buck_enable_reg          = PV88080BA_REG_BUCK2_CONF0,
 167                 .buck_vsel_reg        = PV88080BA_REG_BUCK2_CONF0,
 168                 .buck_mode_reg        = PV88080BA_REG_BUCK2_CONF1,
 169                 .buck_limit_reg       = PV88080BA_REG_BUCK2_CONF1,
 170                 .buck_vdac_range_reg  = PV88080BA_REG_BUCK2_CONF2,
 171                 .buck_vrange_gain_reg = PV88080BA_REG_BUCK2_CONF5,
 172                 .buck_enable_mask         = PV88080_BUCK2_EN,
 173                 .buck_vsel_mask       = PV88080_VBUCK2_MASK,
 174                 .buck_limit_mask          = PV88080_BUCK2_ILIM_MASK,
 175         },
 176         /* BUCK3 */
 177         .buck_regmap[2] = {
 178                 .buck_enable_reg          = PV88080BA_REG_BUCK3_CONF0,
 179                 .buck_vsel_reg        = PV88080BA_REG_BUCK3_CONF0,
 180                 .buck_mode_reg        = PV88080BA_REG_BUCK3_CONF1,
 181                 .buck_limit_reg       = PV88080BA_REG_BUCK3_CONF1,
 182                 .buck_vdac_range_reg  = PV88080BA_REG_BUCK3_CONF2,
 183                 .buck_vrange_gain_reg = PV88080BA_REG_BUCK3_CONF5,
 184                 .buck_enable_mask         = PV88080_BUCK3_EN,
 185                 .buck_vsel_mask       = PV88080_VBUCK3_MASK,
 186                 .buck_limit_mask          = PV88080_BUCK3_ILIM_MASK,
 187         },
 188         /* HVBUCK */
 189         .hvbuck_enable_reg            = PV88080BA_REG_HVBUCK_CONF2,
 190         .hvbuck_vsel_reg          = PV88080BA_REG_HVBUCK_CONF1,
 191         .hvbuck_enable_mask       = PV88080_HVBUCK_EN,
 192         .hvbuck_vsel_mask                 = PV88080_VHVBUCK_MASK,
 193 };
 194
 195 static unsigned int pv88080_buck_get_mode(struct regulator_dev *rdev)
 196 {
 197         struct pv88080_regulator *info = rdev_get_drvdata(rdev);
 198         unsigned int data;
 199         int ret, mode = 0;
 200
 201         ret = regmap_read(rdev->regmap, info->mode_reg, &data);
 202         if (ret < 0)
 203                 return ret;
 204
 205         switch (data & PV88080_BUCK1_MODE_MASK) {
 206         case PV88080_BUCK_MODE_SYNC:
 207                 mode = REGULATOR_MODE_FAST;
 208                 break;
 209         case PV88080_BUCK_MODE_AUTO:
 210                 mode = REGULATOR_MODE_NORMAL;
 211                 break;
 212         case PV88080_BUCK_MODE_SLEEP:
 213                 mode = REGULATOR_MODE_STANDBY;
 214                 break;
 215         default:
 216                 return -EINVAL;
 217         }
 218
 219         return mode;
 220 }
 221
 222 static int pv88080_buck_set_mode(struct regulator_dev *rdev,
 223                                         unsigned int mode)
 224 {
 225         struct pv88080_regulator *info = rdev_get_drvdata(rdev);
 226         int val = 0;
 227
 228         switch (mode) {
 229         case REGULATOR_MODE_FAST:
 230                 val = PV88080_BUCK_MODE_SYNC;
 231                 break;
 232         case REGULATOR_MODE_NORMAL:
 233                 val = PV88080_BUCK_MODE_AUTO;
 234                 break;
 235         case REGULATOR_MODE_STANDBY:
 236                 val = PV88080_BUCK_MODE_SLEEP;
 237                 break;
 238         default:
 239                 return -EINVAL;
 240         }
 241
 242         return regmap_update_bits(rdev->regmap, info->mode_reg,
 243                                         PV88080_BUCK1_MODE_MASK, val);
 244 }
 245
 246 static const struct regulator_ops pv88080_buck_ops = {
 247         .get_mode = pv88080_buck_get_mode,
 248         .set_mode = pv88080_buck_set_mode,
 249         .enable = regulator_enable_regmap,
 250         .disable = regulator_disable_regmap,
 251         .is_enabled = regulator_is_enabled_regmap,
 252         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 253         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 254         .list_voltage = regulator_list_voltage_linear,
 255         .set_current_limit = regulator_set_current_limit_regmap,
 256         .get_current_limit = regulator_get_current_limit_regmap,
 257 };
 258
 259 static const struct regulator_ops pv88080_hvbuck_ops = {
 260         .enable = regulator_enable_regmap,
 261         .disable = regulator_disable_regmap,
 262         .is_enabled = regulator_is_enabled_regmap,
 263         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 264         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 265         .list_voltage = regulator_list_voltage_linear,
 266 };
 267
 268 #define PV88080_BUCK(chip, regl_name, min, step, max, limits_array) \
 269 {\
 270         .desc   =       {\
 271                 .id = chip##_ID_##regl_name,\
 272                 .name = __stringify(chip##_##regl_name),\
 273                 .of_match = of_match_ptr(#regl_name),\
 274                 .regulators_node = of_match_ptr("regulators"),\
 275                 .type = REGULATOR_VOLTAGE,\
 276                 .owner = THIS_MODULE,\
 277                 .ops = &pv88080_buck_ops,\
 278                 .min_uV = min, \
 279                 .uV_step = step, \
 280                 .n_voltages = ((max) - (min))/(step) + 1, \
 281                 .curr_table = limits_array, \
 282                 .n_current_limits = ARRAY_SIZE(limits_array), \
 283         },\
 284 }
 285
 286 #define PV88080_HVBUCK(chip, regl_name, min, step, max) \
 287 {\
 288         .desc   =       {\
 289                 .id = chip##_ID_##regl_name,\
 290                 .name = __stringify(chip##_##regl_name),\
 291                 .of_match = of_match_ptr(#regl_name),\
 292                 .regulators_node = of_match_ptr("regulators"),\
 293                 .type = REGULATOR_VOLTAGE,\
 294                 .owner = THIS_MODULE,\
 295                 .ops = &pv88080_hvbuck_ops,\
 296                 .min_uV = min, \
 297                 .uV_step = step, \
 298                 .n_voltages = ((max) - (min))/(step) + 1, \
 299         },\
 300 }
 301
 302 static struct pv88080_regulator pv88080_regulator_info[] = {
 303         PV88080_BUCK(PV88080, BUCK1, 600000, 6250, 1393750,
 304                 pv88080_buck1_limits),
 305         PV88080_BUCK(PV88080, BUCK2, 600000, 6250, 1393750,
 306                 pv88080_buck23_limits),
 307         PV88080_BUCK(PV88080, BUCK3, 600000, 6250, 1393750,
 308                 pv88080_buck23_limits),
 309         PV88080_HVBUCK(PV88080, HVBUCK, 0, 5000, 1275000),
 310 };
 311
 312 static irqreturn_t pv88080_irq_handler(int irq, void *data)
 313 {
 314         struct pv88080 *chip = data;
 315         int i, reg_val, err, ret = IRQ_NONE;
 316
 317         err = regmap_read(chip->regmap, PV88080_REG_EVENT_A, &reg_val);
 318         if (err < 0)
 319                 goto error_i2c;
 320
 321         if (reg_val & PV88080_E_VDD_FLT) {
 322                 for (i = 0; i < PV88080_MAX_REGULATORS; i++) {
 323                         if (chip->rdev[i] != NULL)
 324                                 regulator_notifier_call_chain(chip->rdev[i],
 325                                         REGULATOR_EVENT_UNDER_VOLTAGE,
 326                                         NULL);
 327                 }
 328
 329                 err = regmap_write(chip->regmap, PV88080_REG_EVENT_A,
 330                         PV88080_E_VDD_FLT);
 331                 if (err < 0)
 332                         goto error_i2c;
 333
 334                 ret = IRQ_HANDLED;
 335         }
 336
 337         if (reg_val & PV88080_E_OVER_TEMP) {
 338                 for (i = 0; i < PV88080_MAX_REGULATORS; i++) {
 339                         if (chip->rdev[i] != NULL)
 340                                 regulator_notifier_call_chain(chip->rdev[i],
 341                                         REGULATOR_EVENT_OVER_TEMP,
 342                                         NULL);
 343                 }
 344
 345                 err = regmap_write(chip->regmap, PV88080_REG_EVENT_A,
 346                         PV88080_E_OVER_TEMP);
 347                 if (err < 0)
 348                         goto error_i2c;
 349
 350                 ret = IRQ_HANDLED;
 351         }
 352
 353         return ret;
 354
 355 error_i2c:
 356         dev_err(chip->dev, "I2C error : %d\n", err);
 357         return IRQ_NONE;
 358 }
 359
 360 /*
 361  * I2C driver interface functions
 362  */
 363 static int pv88080_i2c_probe(struct i2c_client *i2c)
 364 {
 365         struct regulator_init_data *init_data = dev_get_platdata(&i2c->dev);
 366         struct pv88080 *chip;
 367         const struct pv88080_compatible_regmap *regmap_config;
 368         struct regulator_config config = { };
 369         int i, error, ret;
 370         unsigned int conf2, conf5;
 371
 372         chip = devm_kzalloc(&i2c->dev, sizeof(struct pv88080), GFP_KERNEL);
 373         if (!chip)
 374                 return -ENOMEM;
 375
 376         chip->dev = &i2c->dev;
 377         chip->regmap = devm_regmap_init_i2c(i2c, &pv88080_regmap_config);
 378         if (IS_ERR(chip->regmap)) {
 379                 error = PTR_ERR(chip->regmap);
 380                 dev_err(chip->dev, "Failed to allocate register map: %d\n",
 381                         error);
 382                 return error;
 383         }
 384
 385         chip->regmap_config = i2c_get_match_data(i2c);
 386         if (!chip->regmap_config)
 387                 return -ENODEV;
 388
 389         i2c_set_clientdata(i2c, chip);
 390
 391         if (i2c->irq != 0) {
 392                 ret = regmap_write(chip->regmap, PV88080_REG_MASK_A, 0xFF);
 393                 if (ret < 0) {
 394                         dev_err(chip->dev,
 395                                 "Failed to mask A reg: %d\n", ret);
 396                         return ret;
 397                 }
 398                 ret = regmap_write(chip->regmap, PV88080_REG_MASK_B, 0xFF);
 399                 if (ret < 0) {
 400                         dev_err(chip->dev,
 401                                 "Failed to mask B reg: %d\n", ret);
 402                         return ret;
 403                 }
 404                 ret = regmap_write(chip->regmap, PV88080_REG_MASK_C, 0xFF);
 405                 if (ret < 0) {
 406                         dev_err(chip->dev,
 407                                 "Failed to mask C reg: %d\n", ret);
 408                         return ret;
 409                 }
 410
 411                 ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
 412                                         pv88080_irq_handler,
 413                                         IRQF_TRIGGER_LOW|IRQF_ONESHOT,
 414                                         "pv88080", chip);
 415                 if (ret != 0) {
 416                         dev_err(chip->dev, "Failed to request IRQ: %d\n",
 417                                 i2c->irq);
 418                         return ret;
 419                 }
 420
 421                 ret = regmap_update_bits(chip->regmap, PV88080_REG_MASK_A,
 422                         PV88080_M_VDD_FLT | PV88080_M_OVER_TEMP, 0);
 423                 if (ret < 0) {
 424                         dev_err(chip->dev,
 425                                 "Failed to update mask reg: %d\n", ret);
 426                         return ret;
 427                 }
 428         } else {
 429                 dev_warn(chip->dev, "No IRQ configured\n");
 430         }
 431
 432         regmap_config = chip->regmap_config;
 433         config.dev = chip->dev;
 434         config.regmap = chip->regmap;
 435
 436         /* Registeration for BUCK1, 2, 3 */
 437         for (i = 0; i < PV88080_MAX_REGULATORS-1; i++) {
 438                 if (init_data)
 439                         config.init_data = &init_data[i];
 440
 441                 pv88080_regulator_info[i].desc.csel_reg
 442                         = regmap_config->buck_regmap[i].buck_limit_reg;
 443                 pv88080_regulator_info[i].desc.csel_mask
 444                         = regmap_config->buck_regmap[i].buck_limit_mask;
 445                 pv88080_regulator_info[i].mode_reg
 446                         = regmap_config->buck_regmap[i].buck_mode_reg;
 447                 pv88080_regulator_info[i].conf2
 448                         = regmap_config->buck_regmap[i].buck_vdac_range_reg;
 449                 pv88080_regulator_info[i].conf5
 450                         = regmap_config->buck_regmap[i].buck_vrange_gain_reg;
 451                 pv88080_regulator_info[i].desc.enable_reg
 452                         = regmap_config->buck_regmap[i].buck_enable_reg;
 453                 pv88080_regulator_info[i].desc.enable_mask
 454                         = regmap_config->buck_regmap[i].buck_enable_mask;
 455                 pv88080_regulator_info[i].desc.vsel_reg
 456                         = regmap_config->buck_regmap[i].buck_vsel_reg;
 457                 pv88080_regulator_info[i].desc.vsel_mask
 458                         = regmap_config->buck_regmap[i].buck_vsel_mask;
 459
 460                 ret = regmap_read(chip->regmap,
 461                                 pv88080_regulator_info[i].conf2, &conf2);
 462                 if (ret < 0)
 463                         return ret;
 464                 conf2 = ((conf2 >> PV88080_BUCK_VDAC_RANGE_SHIFT) &
 465                         PV88080_BUCK_VDAC_RANGE_MASK);
 466
 467                 ret = regmap_read(chip->regmap,
 468                                 pv88080_regulator_info[i].conf5, &conf5);
 469                 if (ret < 0)
 470                         return ret;
 471                 conf5 = ((conf5 >> PV88080_BUCK_VRANGE_GAIN_SHIFT) &
 472                         PV88080_BUCK_VRANGE_GAIN_MASK);
 473
 474                 pv88080_regulator_info[i].desc.min_uV =
 475                         pv88080_buck_vol[conf2].min_uV * (conf5+1);
 476                 pv88080_regulator_info[i].desc.uV_step =
 477                         pv88080_buck_vol[conf2].uV_step * (conf5+1);
 478                 pv88080_regulator_info[i].desc.n_voltages =
 479                         ((pv88080_buck_vol[conf2].max_uV * (conf5+1))
 480                         - (pv88080_regulator_info[i].desc.min_uV))
 481                         /(pv88080_regulator_info[i].desc.uV_step) + 1;
 482
 483                 config.driver_data = (void *)&pv88080_regulator_info[i];
 484                 chip->rdev[i] = devm_regulator_register(chip->dev,
 485                         &pv88080_regulator_info[i].desc, &config);
 486                 if (IS_ERR(chip->rdev[i])) {
 487                         dev_err(chip->dev,
 488                                 "Failed to register PV88080 regulator\n");
 489                         return PTR_ERR(chip->rdev[i]);
 490                 }
 491         }
 492
 493         pv88080_regulator_info[PV88080_ID_HVBUCK].desc.enable_reg
 494                 = regmap_config->hvbuck_enable_reg;
 495         pv88080_regulator_info[PV88080_ID_HVBUCK].desc.enable_mask
 496                 = regmap_config->hvbuck_enable_mask;
 497         pv88080_regulator_info[PV88080_ID_HVBUCK].desc.vsel_reg
 498                 = regmap_config->hvbuck_vsel_reg;
 499         pv88080_regulator_info[PV88080_ID_HVBUCK].desc.vsel_mask
 500                 = regmap_config->hvbuck_vsel_mask;
 501
 502         /* Registeration for HVBUCK */
 503         if (init_data)
 504                 config.init_data = &init_data[PV88080_ID_HVBUCK];
 505
 506         config.driver_data = (void *)&pv88080_regulator_info[PV88080_ID_HVBUCK];
 507         chip->rdev[PV88080_ID_HVBUCK] = devm_regulator_register(chip->dev,
 508                 &pv88080_regulator_info[PV88080_ID_HVBUCK].desc, &config);
 509         if (IS_ERR(chip->rdev[PV88080_ID_HVBUCK])) {
 510                 dev_err(chip->dev, "Failed to register PV88080 regulator\n");
 511                 return PTR_ERR(chip->rdev[PV88080_ID_HVBUCK]);
 512         }
 513
 514         return 0;
 515 }
 516
 517 static const struct of_device_id pv88080_dt_ids[] = {
 518         { .compatible = "pvs,pv88080",    .data = &pv88080_aa_regs },
 519         { .compatible = "pvs,pv88080-aa", .data = &pv88080_aa_regs },
 520         { .compatible = "pvs,pv88080-ba", .data = &pv88080_ba_regs },
 521         {}
 522 };
 523 MODULE_DEVICE_TABLE(of, pv88080_dt_ids);
 524
 525 static const struct i2c_device_id pv88080_i2c_id[] = {
 526         { "pv88080",    (kernel_ulong_t)&pv88080_aa_regs },
 527         { "pv88080-aa", (kernel_ulong_t)&pv88080_aa_regs },
 528         { "pv88080-ba", (kernel_ulong_t)&pv88080_ba_regs },
 529         {}
 530 };
 531 MODULE_DEVICE_TABLE(i2c, pv88080_i2c_id);
 532
 533 static struct i2c_driver pv88080_regulator_driver = {
 534         .driver = {
 535                 .name = "pv88080",
 536                 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
 537                 .of_match_table = pv88080_dt_ids,
 538         },
 539         .probe = pv88080_i2c_probe,
 540         .id_table = pv88080_i2c_id,
 541 };
 542
 543 module_i2c_driver(pv88080_regulator_driver);
 544
 545 MODULE_AUTHOR("James Ban <James.Ban.opensource@diasemi.com>");
 546 MODULE_DESCRIPTION("Regulator device driver for Powerventure PV88080");
 547 MODULE_LICENSE("GPL");