drivers/regulator/act8865-regulator.c

   1 /*
   2  * act8865-regulator.c - Voltage regulation for active-semi ACT88xx PMUs
   3  *
   4  * http://www.active-semi.com/products/power-management-units/act88xx/
   5  *
   6  * Copyright (C) 2013 Atmel Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #include <linux/module.h>
  20 #include <linux/init.h>
  21 #include <linux/i2c.h>
  22 #include <linux/err.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/regulator/driver.h>
  25 #include <linux/regulator/act8865.h>
  26 #include <linux/of.h>
  27 #include <linux/of_device.h>
  28 #include <linux/regulator/of_regulator.h>
  29 #include <linux/regmap.h>
  30
  31 /*
  32  * ACT8600 Global Register Map.
  33  */
  34 #define ACT8600_SYS_MODE        0x00
  35 #define ACT8600_SYS_CTRL        0x01
  36 #define ACT8600_DCDC1_VSET      0x10
  37 #define ACT8600_DCDC1_CTRL      0x12
  38 #define ACT8600_DCDC2_VSET      0x20
  39 #define ACT8600_DCDC2_CTRL      0x22
  40 #define ACT8600_DCDC3_VSET      0x30
  41 #define ACT8600_DCDC3_CTRL      0x32
  42 #define ACT8600_SUDCDC4_VSET    0x40
  43 #define ACT8600_SUDCDC4_CTRL    0x41
  44 #define ACT8600_LDO5_VSET       0x50
  45 #define ACT8600_LDO5_CTRL       0x51
  46 #define ACT8600_LDO6_VSET       0x60
  47 #define ACT8600_LDO6_CTRL       0x61
  48 #define ACT8600_LDO7_VSET       0x70
  49 #define ACT8600_LDO7_CTRL       0x71
  50 #define ACT8600_LDO8_VSET       0x80
  51 #define ACT8600_LDO8_CTRL       0x81
  52 #define ACT8600_LDO910_CTRL     0x91
  53 #define ACT8600_APCH0           0xA1
  54 #define ACT8600_APCH1           0xA8
  55 #define ACT8600_APCH2           0xA9
  56 #define ACT8600_APCH_STAT       0xAA
  57 #define ACT8600_OTG0            0xB0
  58 #define ACT8600_OTG1            0xB2
  59
  60 /*
  61  * ACT8846 Global Register Map.
  62  */
  63 #define ACT8846_SYS0            0x00
  64 #define ACT8846_SYS1            0x01
  65 #define ACT8846_REG1_VSET       0x10
  66 #define ACT8846_REG1_CTRL       0x12
  67 #define ACT8846_REG2_VSET0      0x20
  68 #define ACT8846_REG2_VSET1      0x21
  69 #define ACT8846_REG2_CTRL       0x22
  70 #define ACT8846_REG3_VSET0      0x30
  71 #define ACT8846_REG3_VSET1      0x31
  72 #define ACT8846_REG3_CTRL       0x32
  73 #define ACT8846_REG4_VSET0      0x40
  74 #define ACT8846_REG4_VSET1      0x41
  75 #define ACT8846_REG4_CTRL       0x42
  76 #define ACT8846_REG5_VSET       0x50
  77 #define ACT8846_REG5_CTRL       0x51
  78 #define ACT8846_REG6_VSET       0x58
  79 #define ACT8846_REG6_CTRL       0x59
  80 #define ACT8846_REG7_VSET       0x60
  81 #define ACT8846_REG7_CTRL       0x61
  82 #define ACT8846_REG8_VSET       0x68
  83 #define ACT8846_REG8_CTRL       0x69
  84 #define ACT8846_REG9_VSET       0x70
  85 #define ACT8846_REG9_CTRL       0x71
  86 #define ACT8846_REG10_VSET      0x80
  87 #define ACT8846_REG10_CTRL      0x81
  88 #define ACT8846_REG11_VSET      0x90
  89 #define ACT8846_REG11_CTRL      0x91
  90 #define ACT8846_REG12_VSET      0xa0
  91 #define ACT8846_REG12_CTRL      0xa1
  92 #define ACT8846_REG13_CTRL      0xb1
  93 #define ACT8846_GLB_OFF_CTRL    0xc3
  94 #define ACT8846_OFF_SYSMASK     0x18
  95
  96 /*
  97  * ACT8865 Global Register Map.
  98  */
  99 #define ACT8865_SYS_MODE        0x00
 100 #define ACT8865_SYS_CTRL        0x01
 101 #define ACT8865_DCDC1_VSET1     0x20
 102 #define ACT8865_DCDC1_VSET2     0x21
 103 #define ACT8865_DCDC1_CTRL      0x22
 104 #define ACT8865_DCDC2_VSET1     0x30
 105 #define ACT8865_DCDC2_VSET2     0x31
 106 #define ACT8865_DCDC2_CTRL      0x32
 107 #define ACT8865_DCDC3_VSET1     0x40
 108 #define ACT8865_DCDC3_VSET2     0x41
 109 #define ACT8865_DCDC3_CTRL      0x42
 110 #define ACT8865_LDO1_VSET       0x50
 111 #define ACT8865_LDO1_CTRL       0x51
 112 #define ACT8865_LDO2_VSET       0x54
 113 #define ACT8865_LDO2_CTRL       0x55
 114 #define ACT8865_LDO3_VSET       0x60
 115 #define ACT8865_LDO3_CTRL       0x61
 116 #define ACT8865_LDO4_VSET       0x64
 117 #define ACT8865_LDO4_CTRL       0x65
 118 #define ACT8865_MSTROFF         0x20
 119
 120 /*
 121  * Field Definitions.
 122  */
 123 #define ACT8865_ENA             0x80    /* ON - [7] */
 124 #define ACT8865_VSEL_MASK       0x3F    /* VSET - [5:0] */
 125
 126
 127 #define ACT8600_LDO10_ENA               0x40    /* ON - [6] */
 128 #define ACT8600_SUDCDC_VSEL_MASK        0xFF    /* SUDCDC VSET - [7:0] */
 129
 130 /*
 131  * ACT8865 voltage number
 132  */
 133 #define ACT8865_VOLTAGE_NUM     64
 134 #define ACT8600_SUDCDC_VOLTAGE_NUM      255
 135
 136 struct act8865 {
 137         struct regmap *regmap;
 138         int off_reg;
 139         int off_mask;
 140 };
 141
 142 static const struct regmap_config act8865_regmap_config = {
 143         .reg_bits = 8,
 144         .val_bits = 8,
 145 };
 146
 147 static const struct regulator_linear_range act8865_voltage_ranges[] = {
 148         REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000),
 149         REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000),
 150         REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000),
 151 };
 152
 153 static const struct regulator_linear_range act8600_sudcdc_voltage_ranges[] = {
 154         REGULATOR_LINEAR_RANGE(3000000, 0, 63, 0),
 155         REGULATOR_LINEAR_RANGE(3000000, 64, 159, 100000),
 156         REGULATOR_LINEAR_RANGE(12600000, 160, 191, 200000),
 157         REGULATOR_LINEAR_RANGE(19000000, 191, 255, 400000),
 158 };
 159
 160 static struct regulator_ops act8865_ops = {
 161         .list_voltage           = regulator_list_voltage_linear_range,
 162         .map_voltage            = regulator_map_voltage_linear_range,
 163         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 164         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 165         .enable                 = regulator_enable_regmap,
 166         .disable                = regulator_disable_regmap,
 167         .is_enabled             = regulator_is_enabled_regmap,
 168 };
 169
 170 static struct regulator_ops act8865_ldo_ops = {
 171         .enable                 = regulator_enable_regmap,
 172         .disable                = regulator_disable_regmap,
 173         .is_enabled             = regulator_is_enabled_regmap,
 174 };
 175
 176 #define ACT88xx_REG(_name, _family, _id, _vsel_reg, _supply)            \
 177         [_family##_ID_##_id] = {                                        \
 178                 .name                   = _name,                        \
 179                 .supply_name            = _supply,                      \
 180                 .id                     = _family##_ID_##_id,           \
 181                 .type                   = REGULATOR_VOLTAGE,            \
 182                 .ops                    = &act8865_ops,                 \
 183                 .n_voltages             = ACT8865_VOLTAGE_NUM,          \
 184                 .linear_ranges          = act8865_voltage_ranges,       \
 185                 .n_linear_ranges        = ARRAY_SIZE(act8865_voltage_ranges), \
 186                 .vsel_reg               = _family##_##_id##_##_vsel_reg, \
 187                 .vsel_mask              = ACT8865_VSEL_MASK,            \
 188                 .enable_reg             = _family##_##_id##_CTRL,       \
 189                 .enable_mask            = ACT8865_ENA,                  \
 190                 .owner                  = THIS_MODULE,                  \
 191         }
 192
 193 static const struct regulator_desc act8600_regulators[] = {
 194         ACT88xx_REG("DCDC1", ACT8600, DCDC1, VSET, "vp1"),
 195         ACT88xx_REG("DCDC2", ACT8600, DCDC2, VSET, "vp2"),
 196         ACT88xx_REG("DCDC3", ACT8600, DCDC3, VSET, "vp3"),
 197         {
 198                 .name = "SUDCDC_REG4",
 199                 .id = ACT8600_ID_SUDCDC4,
 200                 .ops = &act8865_ops,
 201                 .type = REGULATOR_VOLTAGE,
 202                 .n_voltages = ACT8600_SUDCDC_VOLTAGE_NUM,
 203                 .linear_ranges = act8600_sudcdc_voltage_ranges,
 204                 .n_linear_ranges = ARRAY_SIZE(act8600_sudcdc_voltage_ranges),
 205                 .vsel_reg = ACT8600_SUDCDC4_VSET,
 206                 .vsel_mask = ACT8600_SUDCDC_VSEL_MASK,
 207                 .enable_reg = ACT8600_SUDCDC4_CTRL,
 208                 .enable_mask = ACT8865_ENA,
 209                 .owner = THIS_MODULE,
 210         },
 211         ACT88xx_REG("LDO5", ACT8600, LDO5, VSET, "inl"),
 212         ACT88xx_REG("LDO6", ACT8600, LDO6, VSET, "inl"),
 213         ACT88xx_REG("LDO7", ACT8600, LDO7, VSET, "inl"),
 214         ACT88xx_REG("LDO8", ACT8600, LDO8, VSET, "inl"),
 215         {
 216                 .name = "LDO_REG9",
 217                 .id = ACT8600_ID_LDO9,
 218                 .ops = &act8865_ldo_ops,
 219                 .type = REGULATOR_VOLTAGE,
 220                 .n_voltages = 1,
 221                 .fixed_uV = 1800000,
 222                 .enable_reg = ACT8600_LDO910_CTRL,
 223                 .enable_mask = ACT8865_ENA,
 224                 .owner = THIS_MODULE,
 225         },
 226         {
 227                 .name = "LDO_REG10",
 228                 .id = ACT8600_ID_LDO10,
 229                 .ops = &act8865_ldo_ops,
 230                 .type = REGULATOR_VOLTAGE,
 231                 .n_voltages = 1,
 232                 .fixed_uV = 1200000,
 233                 .enable_reg = ACT8600_LDO910_CTRL,
 234                 .enable_mask = ACT8600_LDO10_ENA,
 235                 .owner = THIS_MODULE,
 236         },
 237 };
 238
 239 static const struct regulator_desc act8846_regulators[] = {
 240         ACT88xx_REG("REG1", ACT8846, REG1, VSET, "vp1"),
 241         ACT88xx_REG("REG2", ACT8846, REG2, VSET0, "vp2"),
 242         ACT88xx_REG("REG3", ACT8846, REG3, VSET0, "vp3"),
 243         ACT88xx_REG("REG4", ACT8846, REG4, VSET0, "vp4"),
 244         ACT88xx_REG("REG5", ACT8846, REG5, VSET, "inl1"),
 245         ACT88xx_REG("REG6", ACT8846, REG6, VSET, "inl1"),
 246         ACT88xx_REG("REG7", ACT8846, REG7, VSET, "inl1"),
 247         ACT88xx_REG("REG8", ACT8846, REG8, VSET, "inl2"),
 248         ACT88xx_REG("REG9", ACT8846, REG9, VSET, "inl2"),
 249         ACT88xx_REG("REG10", ACT8846, REG10, VSET, "inl3"),
 250         ACT88xx_REG("REG11", ACT8846, REG11, VSET, "inl3"),
 251         ACT88xx_REG("REG12", ACT8846, REG12, VSET, "inl3"),
 252 };
 253
 254 static const struct regulator_desc act8865_regulators[] = {
 255         ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1, "vp1"),
 256         ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1, "vp2"),
 257         ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1, "vp3"),
 258         ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
 259         ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
 260         ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
 261         ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
 262 };
 263
 264 static const struct regulator_desc act8865_alt_regulators[] = {
 265         ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET2, "vp1"),
 266         ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET2, "vp2"),
 267         ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET2, "vp3"),
 268         ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
 269         ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
 270         ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
 271         ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
 272 };
 273
 274 #ifdef CONFIG_OF
 275 static const struct of_device_id act8865_dt_ids[] = {
 276         { .compatible = "active-semi,act8600", .data = (void *)ACT8600 },
 277         { .compatible = "active-semi,act8846", .data = (void *)ACT8846 },
 278         { .compatible = "active-semi,act8865", .data = (void *)ACT8865 },
 279         { }
 280 };
 281 MODULE_DEVICE_TABLE(of, act8865_dt_ids);
 282
 283 static struct of_regulator_match act8846_matches[] = {
 284         [ACT8846_ID_REG1]       = { .name = "REG1" },
 285         [ACT8846_ID_REG2]       = { .name = "REG2" },
 286         [ACT8846_ID_REG3]       = { .name = "REG3" },
 287         [ACT8846_ID_REG4]       = { .name = "REG4" },
 288         [ACT8846_ID_REG5]       = { .name = "REG5" },
 289         [ACT8846_ID_REG6]       = { .name = "REG6" },
 290         [ACT8846_ID_REG7]       = { .name = "REG7" },
 291         [ACT8846_ID_REG8]       = { .name = "REG8" },
 292         [ACT8846_ID_REG9]       = { .name = "REG9" },
 293         [ACT8846_ID_REG10]      = { .name = "REG10" },
 294         [ACT8846_ID_REG11]      = { .name = "REG11" },
 295         [ACT8846_ID_REG12]      = { .name = "REG12" },
 296 };
 297
 298 static struct of_regulator_match act8865_matches[] = {
 299         [ACT8865_ID_DCDC1]      = { .name = "DCDC_REG1"},
 300         [ACT8865_ID_DCDC2]      = { .name = "DCDC_REG2"},
 301         [ACT8865_ID_DCDC3]      = { .name = "DCDC_REG3"},
 302         [ACT8865_ID_LDO1]       = { .name = "LDO_REG1"},
 303         [ACT8865_ID_LDO2]       = { .name = "LDO_REG2"},
 304         [ACT8865_ID_LDO3]       = { .name = "LDO_REG3"},
 305         [ACT8865_ID_LDO4]       = { .name = "LDO_REG4"},
 306 };
 307
 308 static struct of_regulator_match act8600_matches[] = {
 309         [ACT8600_ID_DCDC1]      = { .name = "DCDC_REG1"},
 310         [ACT8600_ID_DCDC2]      = { .name = "DCDC_REG2"},
 311         [ACT8600_ID_DCDC3]      = { .name = "DCDC_REG3"},
 312         [ACT8600_ID_SUDCDC4]    = { .name = "SUDCDC_REG4"},
 313         [ACT8600_ID_LDO5]       = { .name = "LDO_REG5"},
 314         [ACT8600_ID_LDO6]       = { .name = "LDO_REG6"},
 315         [ACT8600_ID_LDO7]       = { .name = "LDO_REG7"},
 316         [ACT8600_ID_LDO8]       = { .name = "LDO_REG8"},
 317         [ACT8600_ID_LDO9]       = { .name = "LDO_REG9"},
 318         [ACT8600_ID_LDO10]      = { .name = "LDO_REG10"},
 319 };
 320
 321 static int act8865_pdata_from_dt(struct device *dev,
 322                                  struct device_node **of_node,
 323                                  struct act8865_platform_data *pdata,
 324                                  unsigned long type)
 325 {
 326         int matched, i, num_matches;
 327         struct device_node *np;
 328         struct act8865_regulator_data *regulator;
 329         struct of_regulator_match *matches;
 330
 331         np = of_get_child_by_name(dev->of_node, "regulators");
 332         if (!np) {
 333                 dev_err(dev, "missing 'regulators' subnode in DT\n");
 334                 return -EINVAL;
 335         }
 336
 337         switch (type) {
 338         case ACT8600:
 339                 matches = act8600_matches;
 340                 num_matches = ARRAY_SIZE(act8600_matches);
 341                 break;
 342         case ACT8846:
 343                 matches = act8846_matches;
 344                 num_matches = ARRAY_SIZE(act8846_matches);
 345                 break;
 346         case ACT8865:
 347                 matches = act8865_matches;
 348                 num_matches = ARRAY_SIZE(act8865_matches);
 349                 break;
 350         default:
 351                 dev_err(dev, "invalid device id %lu\n", type);
 352                 return -EINVAL;
 353         }
 354
 355         matched = of_regulator_match(dev, np, matches, num_matches);
 356         of_node_put(np);
 357         if (matched <= 0)
 358                 return matched;
 359
 360         pdata->regulators = devm_kzalloc(dev,
 361                                          sizeof(struct act8865_regulator_data) *
 362                                          num_matches, GFP_KERNEL);
 363         if (!pdata->regulators)
 364                 return -ENOMEM;
 365
 366         pdata->num_regulators = num_matches;
 367         regulator = pdata->regulators;
 368
 369         for (i = 0; i < num_matches; i++) {
 370                 regulator->id = i;
 371                 regulator->name = matches[i].name;
 372                 regulator->platform_data = matches[i].init_data;
 373                 of_node[i] = matches[i].of_node;
 374                 regulator++;
 375         }
 376
 377         return 0;
 378 }
 379 #else
 380 static inline int act8865_pdata_from_dt(struct device *dev,
 381                                         struct device_node **of_node,
 382                                         struct act8865_platform_data *pdata,
 383                                         unsigned long type)
 384 {
 385         return 0;
 386 }
 387 #endif
 388
 389 static struct regulator_init_data
 390 *act8865_get_init_data(int id, struct act8865_platform_data *pdata)
 391 {
 392         int i;
 393
 394         if (!pdata)
 395                 return NULL;
 396
 397         for (i = 0; i < pdata->num_regulators; i++) {
 398                 if (pdata->regulators[i].id == id)
 399                         return pdata->regulators[i].platform_data;
 400         }
 401
 402         return NULL;
 403 }
 404
 405 static struct i2c_client *act8865_i2c_client;
 406 static void act8865_power_off(void)
 407 {
 408         struct act8865 *act8865;
 409
 410         act8865 = i2c_get_clientdata(act8865_i2c_client);
 411         regmap_write(act8865->regmap, act8865->off_reg, act8865->off_mask);
 412         while (1);
 413 }
 414
 415 static int act8865_pmic_probe(struct i2c_client *client,
 416                               const struct i2c_device_id *i2c_id)
 417 {
 418         static const struct regulator_desc *regulators;
 419         struct act8865_platform_data pdata_of, *pdata;
 420         struct device *dev = &client->dev;
 421         struct device_node **of_node;
 422         int i, ret, num_regulators;
 423         struct act8865 *act8865;
 424         unsigned long type;
 425         int off_reg, off_mask;
 426         int voltage_select = 0;
 427
 428         pdata = dev_get_platdata(dev);
 429
 430         if (dev->of_node && !pdata) {
 431                 const struct of_device_id *id;
 432
 433                 id = of_match_device(of_match_ptr(act8865_dt_ids), dev);
 434                 if (!id)
 435                         return -ENODEV;
 436
 437                 type = (unsigned long) id->data;
 438
 439                 voltage_select = !!of_get_property(dev->of_node,
 440                                                    "active-semi,vsel-high",
 441                                                    NULL);
 442         } else {
 443                 type = i2c_id->driver_data;
 444         }
 445
 446         switch (type) {
 447         case ACT8600:
 448                 regulators = act8600_regulators;
 449                 num_regulators = ARRAY_SIZE(act8600_regulators);
 450                 off_reg = -1;
 451                 off_mask = -1;
 452                 break;
 453         case ACT8846:
 454                 regulators = act8846_regulators;
 455                 num_regulators = ARRAY_SIZE(act8846_regulators);
 456                 off_reg = ACT8846_GLB_OFF_CTRL;
 457                 off_mask = ACT8846_OFF_SYSMASK;
 458                 break;
 459         case ACT8865:
 460                 if (voltage_select) {
 461                         regulators = act8865_alt_regulators;
 462                         num_regulators = ARRAY_SIZE(act8865_alt_regulators);
 463                 } else {
 464                         regulators = act8865_regulators;
 465                         num_regulators = ARRAY_SIZE(act8865_regulators);
 466                 }
 467                 off_reg = ACT8865_SYS_CTRL;
 468                 off_mask = ACT8865_MSTROFF;
 469                 break;
 470         default:
 471                 dev_err(dev, "invalid device id %lu\n", type);
 472                 return -EINVAL;
 473         }
 474
 475         of_node = devm_kzalloc(dev, sizeof(struct device_node *) *
 476                                num_regulators, GFP_KERNEL);
 477         if (!of_node)
 478                 return -ENOMEM;
 479
 480         if (dev->of_node && !pdata) {
 481                 ret = act8865_pdata_from_dt(dev, of_node, &pdata_of, type);
 482                 if (ret < 0)
 483                         return ret;
 484
 485                 pdata = &pdata_of;
 486         }
 487
 488         if (pdata->num_regulators > num_regulators) {
 489                 dev_err(dev, "too many regulators: %d\n",
 490                         pdata->num_regulators);
 491                 return -EINVAL;
 492         }
 493
 494         act8865 = devm_kzalloc(dev, sizeof(struct act8865), GFP_KERNEL);
 495         if (!act8865)
 496                 return -ENOMEM;
 497
 498         act8865->regmap = devm_regmap_init_i2c(client, &act8865_regmap_config);
 499         if (IS_ERR(act8865->regmap)) {
 500                 ret = PTR_ERR(act8865->regmap);
 501                 dev_err(&client->dev, "Failed to allocate register map: %d\n",
 502                         ret);
 503                 return ret;
 504         }
 505
 506         if (of_device_is_system_power_controller(dev->of_node)) {
 507                 if (!pm_power_off && (off_reg > 0)) {
 508                         act8865_i2c_client = client;
 509                         act8865->off_reg = off_reg;
 510                         act8865->off_mask = off_mask;
 511                         pm_power_off = act8865_power_off;
 512                 } else {
 513                         dev_err(dev, "Failed to set poweroff capability, already defined\n");
 514                 }
 515         }
 516
 517         /* Finally register devices */
 518         for (i = 0; i < num_regulators; i++) {
 519                 const struct regulator_desc *desc = &regulators[i];
 520                 struct regulator_config config = { };
 521                 struct regulator_dev *rdev;
 522
 523                 config.dev = dev;
 524                 config.init_data = act8865_get_init_data(desc->id, pdata);
 525                 config.of_node = of_node[i];
 526                 config.driver_data = act8865;
 527                 config.regmap = act8865->regmap;
 528
 529                 rdev = devm_regulator_register(&client->dev, desc, &config);
 530                 if (IS_ERR(rdev)) {
 531                         dev_err(dev, "failed to register %s\n", desc->name);
 532                         return PTR_ERR(rdev);
 533                 }
 534         }
 535
 536         i2c_set_clientdata(client, act8865);
 537         devm_kfree(dev, of_node);
 538
 539         return 0;
 540 }
 541
 542 static const struct i2c_device_id act8865_ids[] = {
 543         { .name = "act8600", .driver_data = ACT8600 },
 544         { .name = "act8846", .driver_data = ACT8846 },
 545         { .name = "act8865", .driver_data = ACT8865 },
 546         { },
 547 };
 548 MODULE_DEVICE_TABLE(i2c, act8865_ids);
 549
 550 static struct i2c_driver act8865_pmic_driver = {
 551         .driver = {
 552                 .name   = "act8865",
 553         },
 554         .probe          = act8865_pmic_probe,
 555         .id_table       = act8865_ids,
 556 };
 557
 558 module_i2c_driver(act8865_pmic_driver);
 559
 560 MODULE_DESCRIPTION("active-semi act88xx voltage regulator driver");
 561 MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
 562 MODULE_LICENSE("GPL v2");