drivers/regulator/act8865-regulator.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * act8865-regulator.c - Voltage regulation for active-semi ACT88xx PMUs
   4  *
   5  * http://www.active-semi.com/products/power-management-units/act88xx/
   6  *
   7  * Copyright (C) 2013 Atmel Corporation
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/init.h>
  12 #include <linux/i2c.h>
  13 #include <linux/err.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/regulator/driver.h>
  16 #include <linux/regulator/act8865.h>
  17 #include <linux/of.h>
  18 #include <linux/of_device.h>
  19 #include <linux/power_supply.h>
  20 #include <linux/regulator/of_regulator.h>
  21 #include <linux/regmap.h>
  22
  23 /*
  24  * ACT8600 Global Register Map.
  25  */
  26 #define ACT8600_SYS_MODE        0x00
  27 #define ACT8600_SYS_CTRL        0x01
  28 #define ACT8600_DCDC1_VSET      0x10
  29 #define ACT8600_DCDC1_CTRL      0x12
  30 #define ACT8600_DCDC2_VSET      0x20
  31 #define ACT8600_DCDC2_CTRL      0x22
  32 #define ACT8600_DCDC3_VSET      0x30
  33 #define ACT8600_DCDC3_CTRL      0x32
  34 #define ACT8600_SUDCDC4_VSET    0x40
  35 #define ACT8600_SUDCDC4_CTRL    0x41
  36 #define ACT8600_LDO5_VSET       0x50
  37 #define ACT8600_LDO5_CTRL       0x51
  38 #define ACT8600_LDO6_VSET       0x60
  39 #define ACT8600_LDO6_CTRL       0x61
  40 #define ACT8600_LDO7_VSET       0x70
  41 #define ACT8600_LDO7_CTRL       0x71
  42 #define ACT8600_LDO8_VSET       0x80
  43 #define ACT8600_LDO8_CTRL       0x81
  44 #define ACT8600_LDO910_CTRL     0x91
  45 #define ACT8600_APCH0           0xA1
  46 #define ACT8600_APCH1           0xA8
  47 #define ACT8600_APCH2           0xA9
  48 #define ACT8600_APCH_STAT       0xAA
  49 #define ACT8600_OTG0            0xB0
  50 #define ACT8600_OTG1            0xB2
  51
  52 /*
  53  * ACT8846 Global Register Map.
  54  */
  55 #define ACT8846_SYS0            0x00
  56 #define ACT8846_SYS1            0x01
  57 #define ACT8846_REG1_VSET       0x10
  58 #define ACT8846_REG1_CTRL       0x12
  59 #define ACT8846_REG2_VSET0      0x20
  60 #define ACT8846_REG2_VSET1      0x21
  61 #define ACT8846_REG2_CTRL       0x22
  62 #define ACT8846_REG3_VSET0      0x30
  63 #define ACT8846_REG3_VSET1      0x31
  64 #define ACT8846_REG3_CTRL       0x32
  65 #define ACT8846_REG4_VSET0      0x40
  66 #define ACT8846_REG4_VSET1      0x41
  67 #define ACT8846_REG4_CTRL       0x42
  68 #define ACT8846_REG5_VSET       0x50
  69 #define ACT8846_REG5_CTRL       0x51
  70 #define ACT8846_REG6_VSET       0x58
  71 #define ACT8846_REG6_CTRL       0x59
  72 #define ACT8846_REG7_VSET       0x60
  73 #define ACT8846_REG7_CTRL       0x61
  74 #define ACT8846_REG8_VSET       0x68
  75 #define ACT8846_REG8_CTRL       0x69
  76 #define ACT8846_REG9_VSET       0x70
  77 #define ACT8846_REG9_CTRL       0x71
  78 #define ACT8846_REG10_VSET      0x80
  79 #define ACT8846_REG10_CTRL      0x81
  80 #define ACT8846_REG11_VSET      0x90
  81 #define ACT8846_REG11_CTRL      0x91
  82 #define ACT8846_REG12_VSET      0xa0
  83 #define ACT8846_REG12_CTRL      0xa1
  84 #define ACT8846_REG13_CTRL      0xb1
  85 #define ACT8846_GLB_OFF_CTRL    0xc3
  86 #define ACT8846_OFF_SYSMASK     0x18
  87
  88 /*
  89  * ACT8865 Global Register Map.
  90  */
  91 #define ACT8865_SYS_MODE        0x00
  92 #define ACT8865_SYS_CTRL        0x01
  93 #define ACT8865_DCDC1_VSET1     0x20
  94 #define ACT8865_DCDC1_VSET2     0x21
  95 #define ACT8865_DCDC1_CTRL      0x22
  96 #define ACT8865_DCDC2_VSET1     0x30
  97 #define ACT8865_DCDC2_VSET2     0x31
  98 #define ACT8865_DCDC2_CTRL      0x32
  99 #define ACT8865_DCDC3_VSET1     0x40
 100 #define ACT8865_DCDC3_VSET2     0x41
 101 #define ACT8865_DCDC3_CTRL      0x42
 102 #define ACT8865_LDO1_VSET       0x50
 103 #define ACT8865_LDO1_CTRL       0x51
 104 #define ACT8865_LDO2_VSET       0x54
 105 #define ACT8865_LDO2_CTRL       0x55
 106 #define ACT8865_LDO3_VSET       0x60
 107 #define ACT8865_LDO3_CTRL       0x61
 108 #define ACT8865_LDO4_VSET       0x64
 109 #define ACT8865_LDO4_CTRL       0x65
 110 #define ACT8865_MSTROFF         0x20
 111
 112 /*
 113  * Field Definitions.
 114  */
 115 #define ACT8865_ENA             0x80    /* ON - [7] */
 116 #define ACT8865_DIS             0x40    /* DIS - [6] */
 117
 118 #define ACT8865_VSEL_MASK       0x3F    /* VSET - [5:0] */
 119
 120
 121 #define ACT8600_LDO10_ENA               0x40    /* ON - [6] */
 122 #define ACT8600_SUDCDC_VSEL_MASK        0xFF    /* SUDCDC VSET - [7:0] */
 123
 124 #define ACT8600_APCH_CHG_ACIN           BIT(7)
 125 #define ACT8600_APCH_CHG_USB            BIT(6)
 126 #define ACT8600_APCH_CSTATE0            BIT(5)
 127 #define ACT8600_APCH_CSTATE1            BIT(4)
 128
 129 /*
 130  * ACT8865 voltage number
 131  */
 132 #define ACT8865_VOLTAGE_NUM     64
 133 #define ACT8600_SUDCDC_VOLTAGE_NUM      256
 134
 135 struct act8865 {
 136         struct regmap *regmap;
 137         int off_reg;
 138         int off_mask;
 139 };
 140
 141 static const struct regmap_range act8600_reg_ranges[] = {
 142         regmap_reg_range(0x00, 0x01),
 143         regmap_reg_range(0x10, 0x10),
 144         regmap_reg_range(0x12, 0x12),
 145         regmap_reg_range(0x20, 0x20),
 146         regmap_reg_range(0x22, 0x22),
 147         regmap_reg_range(0x30, 0x30),
 148         regmap_reg_range(0x32, 0x32),
 149         regmap_reg_range(0x40, 0x41),
 150         regmap_reg_range(0x50, 0x51),
 151         regmap_reg_range(0x60, 0x61),
 152         regmap_reg_range(0x70, 0x71),
 153         regmap_reg_range(0x80, 0x81),
 154         regmap_reg_range(0x91, 0x91),
 155         regmap_reg_range(0xA1, 0xA1),
 156         regmap_reg_range(0xA8, 0xAA),
 157         regmap_reg_range(0xB0, 0xB0),
 158         regmap_reg_range(0xB2, 0xB2),
 159         regmap_reg_range(0xC1, 0xC1),
 160 };
 161
 162 static const struct regmap_range act8600_reg_ro_ranges[] = {
 163         regmap_reg_range(0xAA, 0xAA),
 164         regmap_reg_range(0xC1, 0xC1),
 165 };
 166
 167 static const struct regmap_range act8600_reg_volatile_ranges[] = {
 168         regmap_reg_range(0x00, 0x01),
 169         regmap_reg_range(0x12, 0x12),
 170         regmap_reg_range(0x22, 0x22),
 171         regmap_reg_range(0x32, 0x32),
 172         regmap_reg_range(0x41, 0x41),
 173         regmap_reg_range(0x51, 0x51),
 174         regmap_reg_range(0x61, 0x61),
 175         regmap_reg_range(0x71, 0x71),
 176         regmap_reg_range(0x81, 0x81),
 177         regmap_reg_range(0xA8, 0xA8),
 178         regmap_reg_range(0xAA, 0xAA),
 179         regmap_reg_range(0xB0, 0xB0),
 180         regmap_reg_range(0xC1, 0xC1),
 181 };
 182
 183 static const struct regmap_access_table act8600_write_ranges_table = {
 184         .yes_ranges     = act8600_reg_ranges,
 185         .n_yes_ranges   = ARRAY_SIZE(act8600_reg_ranges),
 186         .no_ranges      = act8600_reg_ro_ranges,
 187         .n_no_ranges    = ARRAY_SIZE(act8600_reg_ro_ranges),
 188 };
 189
 190 static const struct regmap_access_table act8600_read_ranges_table = {
 191         .yes_ranges     = act8600_reg_ranges,
 192         .n_yes_ranges   = ARRAY_SIZE(act8600_reg_ranges),
 193 };
 194
 195 static const struct regmap_access_table act8600_volatile_ranges_table = {
 196         .yes_ranges     = act8600_reg_volatile_ranges,
 197         .n_yes_ranges   = ARRAY_SIZE(act8600_reg_volatile_ranges),
 198 };
 199
 200 static const struct regmap_config act8600_regmap_config = {
 201         .reg_bits = 8,
 202         .val_bits = 8,
 203         .max_register = 0xFF,
 204         .wr_table = &act8600_write_ranges_table,
 205         .rd_table = &act8600_read_ranges_table,
 206         .volatile_table = &act8600_volatile_ranges_table,
 207 };
 208
 209 static const struct regmap_config act8865_regmap_config = {
 210         .reg_bits = 8,
 211         .val_bits = 8,
 212 };
 213
 214 static const struct regulator_linear_range act8865_voltage_ranges[] = {
 215         REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000),
 216         REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000),
 217         REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000),
 218 };
 219
 220 static const struct regulator_linear_range act8600_sudcdc_voltage_ranges[] = {
 221         REGULATOR_LINEAR_RANGE(3000000, 0, 63, 0),
 222         REGULATOR_LINEAR_RANGE(3000000, 64, 159, 100000),
 223         REGULATOR_LINEAR_RANGE(12600000, 160, 191, 200000),
 224         REGULATOR_LINEAR_RANGE(19000000, 192, 247, 400000),
 225         REGULATOR_LINEAR_RANGE(41400000, 248, 255, 0),
 226 };
 227
 228 static const struct regulator_ops act8865_ops = {
 229         .list_voltage           = regulator_list_voltage_linear_range,
 230         .map_voltage            = regulator_map_voltage_linear_range,
 231         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 232         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 233         .enable                 = regulator_enable_regmap,
 234         .disable                = regulator_disable_regmap,
 235         .is_enabled             = regulator_is_enabled_regmap,
 236 };
 237
 238 static const struct regulator_ops act8865_ldo_ops = {
 239         .list_voltage           = regulator_list_voltage_linear_range,
 240         .map_voltage            = regulator_map_voltage_linear_range,
 241         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 242         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 243         .enable                 = regulator_enable_regmap,
 244         .disable                = regulator_disable_regmap,
 245         .is_enabled             = regulator_is_enabled_regmap,
 246         .set_pull_down          = regulator_set_pull_down_regmap,
 247 };
 248
 249 static const struct regulator_ops act8865_fixed_ldo_ops = {
 250         .enable                 = regulator_enable_regmap,
 251         .disable                = regulator_disable_regmap,
 252         .is_enabled             = regulator_is_enabled_regmap,
 253 };
 254
 255 #define ACT88xx_REG_(_name, _family, _id, _vsel_reg, _supply, _ops)     \
 256         [_family##_ID_##_id] = {                                        \
 257                 .name                   = _name,                        \
 258                 .of_match               = of_match_ptr(_name),          \
 259                 .regulators_node        = of_match_ptr("regulators"),   \
 260                 .supply_name            = _supply,                      \
 261                 .id                     = _family##_ID_##_id,           \
 262                 .type                   = REGULATOR_VOLTAGE,            \
 263                 .ops                    = _ops,                         \
 264                 .n_voltages             = ACT8865_VOLTAGE_NUM,          \
 265                 .linear_ranges          = act8865_voltage_ranges,       \
 266                 .n_linear_ranges        = ARRAY_SIZE(act8865_voltage_ranges), \
 267                 .vsel_reg               = _family##_##_id##_##_vsel_reg, \
 268                 .vsel_mask              = ACT8865_VSEL_MASK,            \
 269                 .enable_reg             = _family##_##_id##_CTRL,       \
 270                 .enable_mask            = ACT8865_ENA,                  \
 271                 .pull_down_reg          = _family##_##_id##_CTRL,       \
 272                 .pull_down_mask         = ACT8865_DIS,                  \
 273                 .owner                  = THIS_MODULE,                  \
 274         }
 275
 276 #define ACT88xx_REG(_name, _family, _id, _vsel_reg, _supply) \
 277         ACT88xx_REG_(_name, _family, _id, _vsel_reg, _supply, &act8865_ops)
 278
 279 #define ACT88xx_LDO(_name, _family, _id, _vsel_reg, _supply) \
 280         ACT88xx_REG_(_name, _family, _id, _vsel_reg, _supply, &act8865_ldo_ops)
 281
 282 static const struct regulator_desc act8600_regulators[] = {
 283         ACT88xx_REG("DCDC1", ACT8600, DCDC1, VSET, "vp1"),
 284         ACT88xx_REG("DCDC2", ACT8600, DCDC2, VSET, "vp2"),
 285         ACT88xx_REG("DCDC3", ACT8600, DCDC3, VSET, "vp3"),
 286         {
 287                 .name = "SUDCDC_REG4",
 288                 .of_match = of_match_ptr("SUDCDC_REG4"),
 289                 .regulators_node = of_match_ptr("regulators"),
 290                 .id = ACT8600_ID_SUDCDC4,
 291                 .ops = &act8865_ops,
 292                 .type = REGULATOR_VOLTAGE,
 293                 .n_voltages = ACT8600_SUDCDC_VOLTAGE_NUM,
 294                 .linear_ranges = act8600_sudcdc_voltage_ranges,
 295                 .n_linear_ranges = ARRAY_SIZE(act8600_sudcdc_voltage_ranges),
 296                 .vsel_reg = ACT8600_SUDCDC4_VSET,
 297                 .vsel_mask = ACT8600_SUDCDC_VSEL_MASK,
 298                 .enable_reg = ACT8600_SUDCDC4_CTRL,
 299                 .enable_mask = ACT8865_ENA,
 300                 .owner = THIS_MODULE,
 301         },
 302         ACT88xx_REG("LDO5", ACT8600, LDO5, VSET, "inl"),
 303         ACT88xx_REG("LDO6", ACT8600, LDO6, VSET, "inl"),
 304         ACT88xx_REG("LDO7", ACT8600, LDO7, VSET, "inl"),
 305         ACT88xx_REG("LDO8", ACT8600, LDO8, VSET, "inl"),
 306         {
 307                 .name = "LDO_REG9",
 308                 .of_match = of_match_ptr("LDO_REG9"),
 309                 .regulators_node = of_match_ptr("regulators"),
 310                 .id = ACT8600_ID_LDO9,
 311                 .ops = &act8865_fixed_ldo_ops,
 312                 .type = REGULATOR_VOLTAGE,
 313                 .n_voltages = 1,
 314                 .fixed_uV = 3300000,
 315                 .enable_reg = ACT8600_LDO910_CTRL,
 316                 .enable_mask = ACT8865_ENA,
 317                 .owner = THIS_MODULE,
 318         },
 319         {
 320                 .name = "LDO_REG10",
 321                 .of_match = of_match_ptr("LDO_REG10"),
 322                 .regulators_node = of_match_ptr("regulators"),
 323                 .id = ACT8600_ID_LDO10,
 324                 .ops = &act8865_fixed_ldo_ops,
 325                 .type = REGULATOR_VOLTAGE,
 326                 .n_voltages = 1,
 327                 .fixed_uV = 1200000,
 328                 .enable_reg = ACT8600_LDO910_CTRL,
 329                 .enable_mask = ACT8600_LDO10_ENA,
 330                 .owner = THIS_MODULE,
 331         },
 332 };
 333
 334 static const struct regulator_desc act8846_regulators[] = {
 335         ACT88xx_REG("REG1", ACT8846, REG1, VSET, "vp1"),
 336         ACT88xx_REG("REG2", ACT8846, REG2, VSET0, "vp2"),
 337         ACT88xx_REG("REG3", ACT8846, REG3, VSET0, "vp3"),
 338         ACT88xx_REG("REG4", ACT8846, REG4, VSET0, "vp4"),
 339         ACT88xx_REG("REG5", ACT8846, REG5, VSET, "inl1"),
 340         ACT88xx_REG("REG6", ACT8846, REG6, VSET, "inl1"),
 341         ACT88xx_REG("REG7", ACT8846, REG7, VSET, "inl1"),
 342         ACT88xx_REG("REG8", ACT8846, REG8, VSET, "inl2"),
 343         ACT88xx_REG("REG9", ACT8846, REG9, VSET, "inl2"),
 344         ACT88xx_REG("REG10", ACT8846, REG10, VSET, "inl3"),
 345         ACT88xx_REG("REG11", ACT8846, REG11, VSET, "inl3"),
 346         ACT88xx_REG("REG12", ACT8846, REG12, VSET, "inl3"),
 347 };
 348
 349 static const struct regulator_desc act8865_regulators[] = {
 350         ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1, "vp1"),
 351         ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1, "vp2"),
 352         ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1, "vp3"),
 353         ACT88xx_LDO("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
 354         ACT88xx_LDO("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
 355         ACT88xx_LDO("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
 356         ACT88xx_LDO("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
 357 };
 358
 359 static const struct regulator_desc act8865_alt_regulators[] = {
 360         ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET2, "vp1"),
 361         ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET2, "vp2"),
 362         ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET2, "vp3"),
 363         ACT88xx_LDO("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
 364         ACT88xx_LDO("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
 365         ACT88xx_LDO("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
 366         ACT88xx_LDO("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
 367 };
 368
 369 #ifdef CONFIG_OF
 370 static const struct of_device_id act8865_dt_ids[] = {
 371         { .compatible = "active-semi,act8600", .data = (void *)ACT8600 },
 372         { .compatible = "active-semi,act8846", .data = (void *)ACT8846 },
 373         { .compatible = "active-semi,act8865", .data = (void *)ACT8865 },
 374         { }
 375 };
 376 MODULE_DEVICE_TABLE(of, act8865_dt_ids);
 377 #endif
 378
 379 static struct act8865_regulator_data *act8865_get_regulator_data(
 380                 int id, struct act8865_platform_data *pdata)
 381 {
 382         int i;
 383
 384         for (i = 0; i < pdata->num_regulators; i++) {
 385                 if (pdata->regulators[i].id == id)
 386                         return &pdata->regulators[i];
 387         }
 388
 389         return NULL;
 390 }
 391
 392 static struct i2c_client *act8865_i2c_client;
 393 static void act8865_power_off(void)
 394 {
 395         struct act8865 *act8865;
 396
 397         act8865 = i2c_get_clientdata(act8865_i2c_client);
 398         regmap_write(act8865->regmap, act8865->off_reg, act8865->off_mask);
 399         while (1);
 400 }
 401
 402 static int act8600_charger_get_status(struct regmap *map)
 403 {
 404         unsigned int val;
 405         int ret;
 406         u8 state0, state1;
 407
 408         ret = regmap_read(map, ACT8600_APCH_STAT, &val);
 409         if (ret < 0)
 410                 return ret;
 411
 412         state0 = val & ACT8600_APCH_CSTATE0;
 413         state1 = val & ACT8600_APCH_CSTATE1;
 414
 415         if (state0 && !state1)
 416                 return POWER_SUPPLY_STATUS_CHARGING;
 417         if (!state0 && state1)
 418                 return POWER_SUPPLY_STATUS_NOT_CHARGING;
 419         if (!state0 && !state1)
 420                 return POWER_SUPPLY_STATUS_DISCHARGING;
 421
 422         return POWER_SUPPLY_STATUS_UNKNOWN;
 423 }
 424
 425 static int act8600_charger_get_property(struct power_supply *psy,
 426                 enum power_supply_property psp, union power_supply_propval *val)
 427 {
 428         struct regmap *map = power_supply_get_drvdata(psy);
 429         int ret;
 430
 431         switch (psp) {
 432         case POWER_SUPPLY_PROP_STATUS:
 433                 ret = act8600_charger_get_status(map);
 434                 if (ret < 0)
 435                         return ret;
 436
 437                 val->intval = ret;
 438                 break;
 439         default:
 440                 return -EINVAL;
 441         }
 442
 443         return 0;
 444 }
 445
 446 static enum power_supply_property act8600_charger_properties[] = {
 447         POWER_SUPPLY_PROP_STATUS,
 448 };
 449
 450 static const struct power_supply_desc act8600_charger_desc = {
 451         .name = "act8600-charger",
 452         .type = POWER_SUPPLY_TYPE_BATTERY,
 453         .properties = act8600_charger_properties,
 454         .num_properties = ARRAY_SIZE(act8600_charger_properties),
 455         .get_property = act8600_charger_get_property,
 456 };
 457
 458 static int act8600_charger_probe(struct device *dev, struct regmap *regmap)
 459 {
 460         struct power_supply *charger;
 461         struct power_supply_config cfg = {
 462                 .drv_data = regmap,
 463                 .of_node = dev->of_node,
 464         };
 465
 466         charger = devm_power_supply_register(dev, &act8600_charger_desc, &cfg);
 467
 468         return PTR_ERR_OR_ZERO(charger);
 469 }
 470
 471 static int act8865_pmic_probe(struct i2c_client *client,
 472                               const struct i2c_device_id *i2c_id)
 473 {
 474         const struct regulator_desc *regulators;
 475         struct act8865_platform_data *pdata = NULL;
 476         struct device *dev = &client->dev;
 477         int i, ret, num_regulators;
 478         struct act8865 *act8865;
 479         const struct regmap_config *regmap_config;
 480         unsigned long type;
 481         int off_reg, off_mask;
 482         int voltage_select = 0;
 483
 484         if (dev->of_node) {
 485                 const struct of_device_id *id;
 486
 487                 id = of_match_device(of_match_ptr(act8865_dt_ids), dev);
 488                 if (!id)
 489                         return -ENODEV;
 490
 491                 type = (unsigned long) id->data;
 492
 493                 voltage_select = !!of_get_property(dev->of_node,
 494                                                    "active-semi,vsel-high",
 495                                                    NULL);
 496         } else {
 497                 type = i2c_id->driver_data;
 498                 pdata = dev_get_platdata(dev);
 499         }
 500
 501         switch (type) {
 502         case ACT8600:
 503                 regulators = act8600_regulators;
 504                 num_regulators = ARRAY_SIZE(act8600_regulators);
 505                 regmap_config = &act8600_regmap_config;
 506                 off_reg = -1;
 507                 off_mask = -1;
 508                 break;
 509         case ACT8846:
 510                 regulators = act8846_regulators;
 511                 num_regulators = ARRAY_SIZE(act8846_regulators);
 512                 regmap_config = &act8865_regmap_config;
 513                 off_reg = ACT8846_GLB_OFF_CTRL;
 514                 off_mask = ACT8846_OFF_SYSMASK;
 515                 break;
 516         case ACT8865:
 517                 if (voltage_select) {
 518                         regulators = act8865_alt_regulators;
 519                         num_regulators = ARRAY_SIZE(act8865_alt_regulators);
 520                 } else {
 521                         regulators = act8865_regulators;
 522                         num_regulators = ARRAY_SIZE(act8865_regulators);
 523                 }
 524                 regmap_config = &act8865_regmap_config;
 525                 off_reg = ACT8865_SYS_CTRL;
 526                 off_mask = ACT8865_MSTROFF;
 527                 break;
 528         default:
 529                 dev_err(dev, "invalid device id %lu\n", type);
 530                 return -EINVAL;
 531         }
 532
 533         act8865 = devm_kzalloc(dev, sizeof(struct act8865), GFP_KERNEL);
 534         if (!act8865)
 535                 return -ENOMEM;
 536
 537         act8865->regmap = devm_regmap_init_i2c(client, regmap_config);
 538         if (IS_ERR(act8865->regmap)) {
 539                 ret = PTR_ERR(act8865->regmap);
 540                 dev_err(dev, "Failed to allocate register map: %d\n", ret);
 541                 return ret;
 542         }
 543
 544         if (of_device_is_system_power_controller(dev->of_node)) {
 545                 if (!pm_power_off && (off_reg > 0)) {
 546                         act8865_i2c_client = client;
 547                         act8865->off_reg = off_reg;
 548                         act8865->off_mask = off_mask;
 549                         pm_power_off = act8865_power_off;
 550                 } else {
 551                         dev_err(dev, "Failed to set poweroff capability, already defined\n");
 552                 }
 553         }
 554
 555         /* Finally register devices */
 556         for (i = 0; i < num_regulators; i++) {
 557                 const struct regulator_desc *desc = &regulators[i];
 558                 struct regulator_config config = { };
 559                 struct regulator_dev *rdev;
 560
 561                 config.dev = dev;
 562                 config.driver_data = act8865;
 563                 config.regmap = act8865->regmap;
 564
 565                 if (pdata) {
 566                         struct act8865_regulator_data *rdata;
 567
 568                         rdata = act8865_get_regulator_data(desc->id, pdata);
 569                         if (rdata) {
 570                                 config.init_data = rdata->init_data;
 571                                 config.of_node = rdata->of_node;
 572                         }
 573                 }
 574
 575                 rdev = devm_regulator_register(dev, desc, &config);
 576                 if (IS_ERR(rdev)) {
 577                         dev_err(dev, "failed to register %s\n", desc->name);
 578                         return PTR_ERR(rdev);
 579                 }
 580         }
 581
 582         if (type == ACT8600) {
 583                 ret = act8600_charger_probe(dev, act8865->regmap);
 584                 if (ret < 0) {
 585                         if (ret != -EPROBE_DEFER)
 586                                 dev_err(dev, "Failed to probe charger");
 587                         return ret;
 588                 }
 589         }
 590
 591         i2c_set_clientdata(client, act8865);
 592
 593         return 0;
 594 }
 595
 596 static const struct i2c_device_id act8865_ids[] = {
 597         { .name = "act8600", .driver_data = ACT8600 },
 598         { .name = "act8846", .driver_data = ACT8846 },
 599         { .name = "act8865", .driver_data = ACT8865 },
 600         { },
 601 };
 602 MODULE_DEVICE_TABLE(i2c, act8865_ids);
 603
 604 static struct i2c_driver act8865_pmic_driver = {
 605         .driver = {
 606                 .name   = "act8865",
 607         },
 608         .probe          = act8865_pmic_probe,
 609         .id_table       = act8865_ids,
 610 };
 611
 612 module_i2c_driver(act8865_pmic_driver);
 613
 614 MODULE_DESCRIPTION("active-semi act88xx voltage regulator driver");
 615 MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
 616 MODULE_LICENSE("GPL v2");