drivers/regulator/mt6358-regulator.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright (c) 2019 MediaTek Inc.
   4
   5 #include <linux/mfd/mt6358/registers.h>
   6 #include <linux/mfd/mt6397/core.h>
   7 #include <linux/module.h>
   8 #include <linux/of.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/regmap.h>
  11 #include <linux/regulator/driver.h>
  12 #include <linux/regulator/machine.h>
  13 #include <linux/regulator/mt6358-regulator.h>
  14 #include <linux/regulator/of_regulator.h>
  15
  16 #define MT6358_BUCK_MODE_AUTO   0
  17 #define MT6358_BUCK_MODE_FORCE_PWM      1
  18
  19 /*
  20  * MT6358 regulators' information
  21  *
  22  * @desc: standard fields of regulator description.
  23  * @qi: Mask for query enable signal status of regulators
  24  */
  25 struct mt6358_regulator_info {
  26         struct regulator_desc desc;
  27         u32 status_reg;
  28         u32 qi;
  29         const u32 *index_table;
  30         unsigned int n_table;
  31         u32 da_vsel_reg;
  32         u32 da_vsel_mask;
  33         u32 modeset_reg;
  34         u32 modeset_mask;
  35 };
  36
  37 #define to_regulator_info(x) container_of((x), struct mt6358_regulator_info, desc)
  38
  39 #define MT6358_BUCK(match, vreg, min, max, step,                \
  40         vosel_mask, _da_vsel_reg, _da_vsel_mask,        \
  41         _modeset_reg, _modeset_shift)           \
  42 [MT6358_ID_##vreg] = {  \
  43         .desc = {       \
  44                 .name = #vreg,  \
  45                 .of_match = of_match_ptr(match),        \
  46                 .ops = &mt6358_buck_ops,        \
  47                 .type = REGULATOR_VOLTAGE,      \
  48                 .id = MT6358_ID_##vreg,         \
  49                 .owner = THIS_MODULE,           \
  50                 .n_voltages = ((max) - (min)) / (step) + 1,     \
  51                 .min_uV = (min),                \
  52                 .uV_step = (step),              \
  53                 .vsel_reg = MT6358_BUCK_##vreg##_ELR0,  \
  54                 .vsel_mask = vosel_mask,        \
  55                 .enable_reg = MT6358_BUCK_##vreg##_CON0,        \
  56                 .enable_mask = BIT(0),  \
  57                 .of_map_mode = mt6358_map_mode, \
  58         },      \
  59         .status_reg = MT6358_BUCK_##vreg##_DBG1,        \
  60         .qi = BIT(0),   \
  61         .da_vsel_reg = _da_vsel_reg,    \
  62         .da_vsel_mask = _da_vsel_mask,  \
  63         .modeset_reg = _modeset_reg,    \
  64         .modeset_mask = BIT(_modeset_shift),    \
  65 }
  66
  67 #define MT6358_LDO(match, vreg, ldo_volt_table, \
  68         ldo_index_table, enreg, enbit, vosel,   \
  69         vosel_mask)     \
  70 [MT6358_ID_##vreg] = {  \
  71         .desc = {       \
  72                 .name = #vreg,  \
  73                 .of_match = of_match_ptr(match),        \
  74                 .ops = &mt6358_volt_table_ops,  \
  75                 .type = REGULATOR_VOLTAGE,      \
  76                 .id = MT6358_ID_##vreg, \
  77                 .owner = THIS_MODULE,   \
  78                 .n_voltages = ARRAY_SIZE(ldo_volt_table),       \
  79                 .volt_table = ldo_volt_table,   \
  80                 .vsel_reg = vosel,      \
  81                 .vsel_mask = vosel_mask,        \
  82                 .enable_reg = enreg,    \
  83                 .enable_mask = BIT(enbit),      \
  84         },      \
  85         .status_reg = MT6358_LDO_##vreg##_CON1, \
  86         .qi = BIT(15),  \
  87         .index_table = ldo_index_table, \
  88         .n_table = ARRAY_SIZE(ldo_index_table), \
  89 }
  90
  91 #define MT6358_LDO1(match, vreg, min, max, step,        \
  92         _da_vsel_reg, _da_vsel_mask,    \
  93         vosel, vosel_mask)      \
  94 [MT6358_ID_##vreg] = {  \
  95         .desc = {       \
  96                 .name = #vreg,  \
  97                 .of_match = of_match_ptr(match),        \
  98                 .ops = &mt6358_volt_range_ops,  \
  99                 .type = REGULATOR_VOLTAGE,      \
 100                 .id = MT6358_ID_##vreg, \
 101                 .owner = THIS_MODULE,   \
 102                 .n_voltages = ((max) - (min)) / (step) + 1,     \
 103                 .min_uV = (min),                \
 104                 .uV_step = (step),              \
 105                 .vsel_reg = vosel,      \
 106                 .vsel_mask = vosel_mask,        \
 107                 .enable_reg = MT6358_LDO_##vreg##_CON0, \
 108                 .enable_mask = BIT(0),  \
 109         },      \
 110         .da_vsel_reg = _da_vsel_reg,    \
 111         .da_vsel_mask = _da_vsel_mask,  \
 112         .status_reg = MT6358_LDO_##vreg##_DBG1, \
 113         .qi = BIT(0),   \
 114 }
 115
 116 #define MT6358_REG_FIXED(match, vreg,   \
 117         enreg, enbit, volt)     \
 118 [MT6358_ID_##vreg] = {  \
 119         .desc = {       \
 120                 .name = #vreg,  \
 121                 .of_match = of_match_ptr(match),        \
 122                 .ops = &mt6358_volt_fixed_ops,  \
 123                 .type = REGULATOR_VOLTAGE,      \
 124                 .id = MT6358_ID_##vreg, \
 125                 .owner = THIS_MODULE,   \
 126                 .n_voltages = 1,        \
 127                 .enable_reg = enreg,    \
 128                 .enable_mask = BIT(enbit),      \
 129                 .min_uV = volt, \
 130         },      \
 131         .status_reg = MT6358_LDO_##vreg##_CON1, \
 132         .qi = BIT(15),                                                  \
 133 }
 134
 135 #define MT6366_BUCK(match, vreg, min, max, step,                \
 136         vosel_mask, _da_vsel_reg, _da_vsel_mask,        \
 137         _modeset_reg, _modeset_shift)           \
 138 [MT6366_ID_##vreg] = {  \
 139         .desc = {       \
 140                 .name = #vreg,  \
 141                 .of_match = of_match_ptr(match),        \
 142                 .ops = &mt6358_buck_ops,        \
 143                 .type = REGULATOR_VOLTAGE,      \
 144                 .id = MT6366_ID_##vreg,         \
 145                 .owner = THIS_MODULE,           \
 146                 .n_voltages = ((max) - (min)) / (step) + 1,     \
 147                 .min_uV = (min),                \
 148                 .uV_step = (step),              \
 149                 .vsel_reg = MT6358_BUCK_##vreg##_ELR0,  \
 150                 .vsel_mask = vosel_mask,        \
 151                 .enable_reg = MT6358_BUCK_##vreg##_CON0,        \
 152                 .enable_mask = BIT(0),  \
 153                 .of_map_mode = mt6358_map_mode, \
 154         },      \
 155         .status_reg = MT6358_BUCK_##vreg##_DBG1,        \
 156         .qi = BIT(0),   \
 157         .da_vsel_reg = _da_vsel_reg,    \
 158         .da_vsel_mask = _da_vsel_mask,  \
 159         .modeset_reg = _modeset_reg,    \
 160         .modeset_mask = BIT(_modeset_shift),    \
 161 }
 162
 163 #define MT6366_LDO(match, vreg, ldo_volt_table, \
 164         ldo_index_table, enreg, enbit, vosel,   \
 165         vosel_mask)     \
 166 [MT6366_ID_##vreg] = {  \
 167         .desc = {       \
 168                 .name = #vreg,  \
 169                 .of_match = of_match_ptr(match),        \
 170                 .ops = &mt6358_volt_table_ops,  \
 171                 .type = REGULATOR_VOLTAGE,      \
 172                 .id = MT6366_ID_##vreg, \
 173                 .owner = THIS_MODULE,   \
 174                 .n_voltages = ARRAY_SIZE(ldo_volt_table),       \
 175                 .volt_table = ldo_volt_table,   \
 176                 .vsel_reg = vosel,      \
 177                 .vsel_mask = vosel_mask,        \
 178                 .enable_reg = enreg,    \
 179                 .enable_mask = BIT(enbit),      \
 180         },      \
 181         .status_reg = MT6358_LDO_##vreg##_CON1, \
 182         .qi = BIT(15),  \
 183         .index_table = ldo_index_table, \
 184         .n_table = ARRAY_SIZE(ldo_index_table), \
 185 }
 186
 187 #define MT6366_LDO1(match, vreg, min, max, step,        \
 188         _da_vsel_reg, _da_vsel_mask,    \
 189         vosel, vosel_mask)      \
 190 [MT6366_ID_##vreg] = {  \
 191         .desc = {       \
 192                 .name = #vreg,  \
 193                 .of_match = of_match_ptr(match),        \
 194                 .ops = &mt6358_volt_range_ops,  \
 195                 .type = REGULATOR_VOLTAGE,      \
 196                 .id = MT6366_ID_##vreg, \
 197                 .owner = THIS_MODULE,   \
 198                 .n_voltages = ((max) - (min)) / (step) + 1,     \
 199                 .min_uV = (min),                \
 200                 .uV_step = (step),              \
 201                 .vsel_reg = vosel,      \
 202                 .vsel_mask = vosel_mask,        \
 203                 .enable_reg = MT6358_LDO_##vreg##_CON0, \
 204                 .enable_mask = BIT(0),  \
 205         },      \
 206         .da_vsel_reg = _da_vsel_reg,    \
 207         .da_vsel_mask = _da_vsel_mask,  \
 208         .status_reg = MT6358_LDO_##vreg##_DBG1, \
 209         .qi = BIT(0),   \
 210 }
 211
 212 #define MT6366_REG_FIXED(match, vreg,   \
 213         enreg, enbit, volt)     \
 214 [MT6366_ID_##vreg] = {  \
 215         .desc = {       \
 216                 .name = #vreg,  \
 217                 .of_match = of_match_ptr(match),        \
 218                 .ops = &mt6358_volt_fixed_ops,  \
 219                 .type = REGULATOR_VOLTAGE,      \
 220                 .id = MT6366_ID_##vreg, \
 221                 .owner = THIS_MODULE,   \
 222                 .n_voltages = 1,        \
 223                 .enable_reg = enreg,    \
 224                 .enable_mask = BIT(enbit),      \
 225                 .min_uV = volt, \
 226         },      \
 227         .status_reg = MT6358_LDO_##vreg##_CON1, \
 228         .qi = BIT(15),                                                  \
 229 }
 230
 231
 232 static const unsigned int vdram2_voltages[] = {
 233         600000, 1800000,
 234 };
 235
 236 static const unsigned int vsim_voltages[] = {
 237         1700000, 1800000, 2700000, 3000000, 3100000,
 238 };
 239
 240 static const unsigned int vibr_voltages[] = {
 241         1200000, 1300000, 1500000, 1800000,
 242         2000000, 2800000, 3000000, 3300000,
 243 };
 244
 245 static const unsigned int vusb_voltages[] = {
 246         3000000, 3100000,
 247 };
 248
 249 static const unsigned int vcamd_voltages[] = {
 250         900000, 1000000, 1100000, 1200000,
 251         1300000, 1500000, 1800000,
 252 };
 253
 254 static const unsigned int vefuse_voltages[] = {
 255         1700000, 1800000, 1900000,
 256 };
 257
 258 static const unsigned int vmch_vemc_voltages[] = {
 259         2900000, 3000000, 3300000,
 260 };
 261
 262 static const unsigned int vcama_voltages[] = {
 263         1800000, 2500000, 2700000,
 264         2800000, 2900000, 3000000,
 265 };
 266
 267 static const unsigned int vcn33_voltages[] = {
 268         3300000, 3400000, 3500000,
 269 };
 270
 271 static const unsigned int vmc_voltages[] = {
 272         1800000, 2900000, 3000000, 3300000,
 273 };
 274
 275 static const unsigned int vldo28_voltages[] = {
 276         2800000, 3000000,
 277 };
 278
 279 static const u32 vdram2_idx[] = {
 280         0, 12,
 281 };
 282
 283 static const u32 vsim_idx[] = {
 284         3, 4, 8, 11, 12,
 285 };
 286
 287 static const u32 vibr_idx[] = {
 288         0, 1, 2, 4, 5, 9, 11, 13,
 289 };
 290
 291 static const u32 vusb_idx[] = {
 292         3, 4,
 293 };
 294
 295 static const u32 vcamd_idx[] = {
 296         3, 4, 5, 6, 7, 9, 12,
 297 };
 298
 299 static const u32 vefuse_idx[] = {
 300         11, 12, 13,
 301 };
 302
 303 static const u32 vmch_vemc_idx[] = {
 304         2, 3, 5,
 305 };
 306
 307 static const u32 vcama_idx[] = {
 308         0, 7, 9, 10, 11, 12,
 309 };
 310
 311 static const u32 vcn33_idx[] = {
 312         1, 2, 3,
 313 };
 314
 315 static const u32 vmc_idx[] = {
 316         4, 10, 11, 13,
 317 };
 318
 319 static const u32 vldo28_idx[] = {
 320         1, 3,
 321 };
 322
 323 static unsigned int mt6358_map_mode(unsigned int mode)
 324 {
 325         return mode == MT6358_BUCK_MODE_AUTO ?
 326                 REGULATOR_MODE_NORMAL : REGULATOR_MODE_FAST;
 327 }
 328
 329 static int mt6358_set_voltage_sel(struct regulator_dev *rdev,
 330                                   unsigned int selector)
 331 {
 332         const struct mt6358_regulator_info *info = to_regulator_info(rdev->desc);
 333         int idx, ret;
 334         const u32 *pvol;
 335
 336         pvol = info->index_table;
 337
 338         idx = pvol[selector];
 339         idx <<= ffs(info->desc.vsel_mask) - 1;
 340         ret = regmap_update_bits(rdev->regmap, info->desc.vsel_reg,
 341                                  info->desc.vsel_mask, idx);
 342
 343         return ret;
 344 }
 345
 346 static int mt6358_get_voltage_sel(struct regulator_dev *rdev)
 347 {
 348         const struct mt6358_regulator_info *info = to_regulator_info(rdev->desc);
 349         int idx, ret;
 350         u32 selector;
 351         const u32 *pvol;
 352
 353         ret = regmap_read(rdev->regmap, info->desc.vsel_reg, &selector);
 354         if (ret != 0) {
 355                 dev_info(&rdev->dev,
 356                          "Failed to get mt6358 %s vsel reg: %d\n",
 357                          info->desc.name, ret);
 358                 return ret;
 359         }
 360
 361         selector = (selector & info->desc.vsel_mask) >>
 362                         (ffs(info->desc.vsel_mask) - 1);
 363         pvol = info->index_table;
 364         for (idx = 0; idx < info->desc.n_voltages; idx++) {
 365                 if (pvol[idx] == selector)
 366                         return idx;
 367         }
 368
 369         return -EINVAL;
 370 }
 371
 372 static int mt6358_get_buck_voltage_sel(struct regulator_dev *rdev)
 373 {
 374         const struct mt6358_regulator_info *info = to_regulator_info(rdev->desc);
 375         int ret, regval;
 376
 377         ret = regmap_read(rdev->regmap, info->da_vsel_reg, &regval);
 378         if (ret != 0) {
 379                 dev_err(&rdev->dev,
 380                         "Failed to get mt6358 Buck %s vsel reg: %d\n",
 381                         info->desc.name, ret);
 382                 return ret;
 383         }
 384
 385         ret = (regval & info->da_vsel_mask) >> (ffs(info->da_vsel_mask) - 1);
 386
 387         return ret;
 388 }
 389
 390 static int mt6358_get_status(struct regulator_dev *rdev)
 391 {
 392         const struct mt6358_regulator_info *info = to_regulator_info(rdev->desc);
 393         int ret;
 394         u32 regval;
 395
 396         ret = regmap_read(rdev->regmap, info->status_reg, &regval);
 397         if (ret != 0) {
 398                 dev_info(&rdev->dev, "Failed to get enable reg: %d\n", ret);
 399                 return ret;
 400         }
 401
 402         return (regval & info->qi) ? REGULATOR_STATUS_ON : REGULATOR_STATUS_OFF;
 403 }
 404
 405 static int mt6358_regulator_set_mode(struct regulator_dev *rdev,
 406                                      unsigned int mode)
 407 {
 408         const struct mt6358_regulator_info *info = to_regulator_info(rdev->desc);
 409         int val;
 410
 411         switch (mode) {
 412         case REGULATOR_MODE_FAST:
 413                 val = MT6358_BUCK_MODE_FORCE_PWM;
 414                 break;
 415         case REGULATOR_MODE_NORMAL:
 416                 val = MT6358_BUCK_MODE_AUTO;
 417                 break;
 418         default:
 419                 return -EINVAL;
 420         }
 421
 422         dev_dbg(&rdev->dev, "mt6358 buck set_mode %#x, %#x, %#x\n",
 423                 info->modeset_reg, info->modeset_mask, val);
 424
 425         val <<= ffs(info->modeset_mask) - 1;
 426
 427         return regmap_update_bits(rdev->regmap, info->modeset_reg,
 428                                   info->modeset_mask, val);
 429 }
 430
 431 static unsigned int mt6358_regulator_get_mode(struct regulator_dev *rdev)
 432 {
 433         const struct mt6358_regulator_info *info = to_regulator_info(rdev->desc);
 434         int ret, regval;
 435
 436         ret = regmap_read(rdev->regmap, info->modeset_reg, &regval);
 437         if (ret != 0) {
 438                 dev_err(&rdev->dev,
 439                         "Failed to get mt6358 buck mode: %d\n", ret);
 440                 return ret;
 441         }
 442
 443         switch ((regval & info->modeset_mask) >> (ffs(info->modeset_mask) - 1)) {
 444         case MT6358_BUCK_MODE_AUTO:
 445                 return REGULATOR_MODE_NORMAL;
 446         case MT6358_BUCK_MODE_FORCE_PWM:
 447                 return REGULATOR_MODE_FAST;
 448         default:
 449                 return -EINVAL;
 450         }
 451 }
 452
 453 static const struct regulator_ops mt6358_buck_ops = {
 454         .list_voltage = regulator_list_voltage_linear,
 455         .map_voltage = regulator_map_voltage_linear,
 456         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 457         .get_voltage_sel = mt6358_get_buck_voltage_sel,
 458         .set_voltage_time_sel = regulator_set_voltage_time_sel,
 459         .enable = regulator_enable_regmap,
 460         .disable = regulator_disable_regmap,
 461         .is_enabled = regulator_is_enabled_regmap,
 462         .get_status = mt6358_get_status,
 463         .set_mode = mt6358_regulator_set_mode,
 464         .get_mode = mt6358_regulator_get_mode,
 465 };
 466
 467 static const struct regulator_ops mt6358_volt_range_ops = {
 468         .list_voltage = regulator_list_voltage_linear,
 469         .map_voltage = regulator_map_voltage_linear,
 470         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 471         .get_voltage_sel = mt6358_get_buck_voltage_sel,
 472         .set_voltage_time_sel = regulator_set_voltage_time_sel,
 473         .enable = regulator_enable_regmap,
 474         .disable = regulator_disable_regmap,
 475         .is_enabled = regulator_is_enabled_regmap,
 476         .get_status = mt6358_get_status,
 477 };
 478
 479 static const struct regulator_ops mt6358_volt_table_ops = {
 480         .list_voltage = regulator_list_voltage_table,
 481         .map_voltage = regulator_map_voltage_iterate,
 482         .set_voltage_sel = mt6358_set_voltage_sel,
 483         .get_voltage_sel = mt6358_get_voltage_sel,
 484         .set_voltage_time_sel = regulator_set_voltage_time_sel,
 485         .enable = regulator_enable_regmap,
 486         .disable = regulator_disable_regmap,
 487         .is_enabled = regulator_is_enabled_regmap,
 488         .get_status = mt6358_get_status,
 489 };
 490
 491 static const struct regulator_ops mt6358_volt_fixed_ops = {
 492         .list_voltage = regulator_list_voltage_linear,
 493         .enable = regulator_enable_regmap,
 494         .disable = regulator_disable_regmap,
 495         .is_enabled = regulator_is_enabled_regmap,
 496         .get_status = mt6358_get_status,
 497 };
 498
 499 /* The array is indexed by id(MT6358_ID_XXX) */
 500 static const struct mt6358_regulator_info mt6358_regulators[] = {
 501         MT6358_BUCK("buck_vdram1", VDRAM1, 500000, 2087500, 12500,
 502                     0x7f, MT6358_BUCK_VDRAM1_DBG0, 0x7f, MT6358_VDRAM1_ANA_CON0, 8),
 503         MT6358_BUCK("buck_vcore", VCORE, 500000, 1293750, 6250,
 504                     0x7f, MT6358_BUCK_VCORE_DBG0, 0x7f, MT6358_VCORE_VGPU_ANA_CON0, 1),
 505         MT6358_BUCK("buck_vpa", VPA, 500000, 3650000, 50000,
 506                     0x3f, MT6358_BUCK_VPA_DBG0, 0x3f, MT6358_VPA_ANA_CON0, 3),
 507         MT6358_BUCK("buck_vproc11", VPROC11, 500000, 1293750, 6250,
 508                     0x7f, MT6358_BUCK_VPROC11_DBG0, 0x7f, MT6358_VPROC_ANA_CON0, 1),
 509         MT6358_BUCK("buck_vproc12", VPROC12, 500000, 1293750, 6250,
 510                     0x7f, MT6358_BUCK_VPROC12_DBG0, 0x7f, MT6358_VPROC_ANA_CON0, 2),
 511         MT6358_BUCK("buck_vgpu", VGPU, 500000, 1293750, 6250,
 512                     0x7f, MT6358_BUCK_VGPU_ELR0, 0x7f, MT6358_VCORE_VGPU_ANA_CON0, 2),
 513         MT6358_BUCK("buck_vs2", VS2, 500000, 2087500, 12500,
 514                     0x7f, MT6358_BUCK_VS2_DBG0, 0x7f, MT6358_VS2_ANA_CON0, 8),
 515         MT6358_BUCK("buck_vmodem", VMODEM, 500000, 1293750, 6250,
 516                     0x7f, MT6358_BUCK_VMODEM_DBG0, 0x7f, MT6358_VMODEM_ANA_CON0, 8),
 517         MT6358_BUCK("buck_vs1", VS1, 1000000, 2587500, 12500,
 518                     0x7f, MT6358_BUCK_VS1_DBG0, 0x7f, MT6358_VS1_ANA_CON0, 8),
 519         MT6358_REG_FIXED("ldo_vrf12", VRF12,
 520                          MT6358_LDO_VRF12_CON0, 0, 1200000),
 521         MT6358_REG_FIXED("ldo_vio18", VIO18,
 522                          MT6358_LDO_VIO18_CON0, 0, 1800000),
 523         MT6358_REG_FIXED("ldo_vcamio", VCAMIO,
 524                          MT6358_LDO_VCAMIO_CON0, 0, 1800000),
 525         MT6358_REG_FIXED("ldo_vcn18", VCN18, MT6358_LDO_VCN18_CON0, 0, 1800000),
 526         MT6358_REG_FIXED("ldo_vfe28", VFE28, MT6358_LDO_VFE28_CON0, 0, 2800000),
 527         MT6358_REG_FIXED("ldo_vcn28", VCN28, MT6358_LDO_VCN28_CON0, 0, 2800000),
 528         MT6358_REG_FIXED("ldo_vxo22", VXO22, MT6358_LDO_VXO22_CON0, 0, 2200000),
 529         MT6358_REG_FIXED("ldo_vaux18", VAUX18,
 530                          MT6358_LDO_VAUX18_CON0, 0, 1800000),
 531         MT6358_REG_FIXED("ldo_vbif28", VBIF28,
 532                          MT6358_LDO_VBIF28_CON0, 0, 2800000),
 533         MT6358_REG_FIXED("ldo_vio28", VIO28, MT6358_LDO_VIO28_CON0, 0, 2800000),
 534         MT6358_REG_FIXED("ldo_va12", VA12, MT6358_LDO_VA12_CON0, 0, 1200000),
 535         MT6358_REG_FIXED("ldo_vrf18", VRF18, MT6358_LDO_VRF18_CON0, 0, 1800000),
 536         MT6358_REG_FIXED("ldo_vaud28", VAUD28,
 537                          MT6358_LDO_VAUD28_CON0, 0, 2800000),
 538         MT6358_LDO("ldo_vdram2", VDRAM2, vdram2_voltages, vdram2_idx,
 539                    MT6358_LDO_VDRAM2_CON0, 0, MT6358_LDO_VDRAM2_ELR0, 0xf),
 540         MT6358_LDO("ldo_vsim1", VSIM1, vsim_voltages, vsim_idx,
 541                    MT6358_LDO_VSIM1_CON0, 0, MT6358_VSIM1_ANA_CON0, 0xf00),
 542         MT6358_LDO("ldo_vibr", VIBR, vibr_voltages, vibr_idx,
 543                    MT6358_LDO_VIBR_CON0, 0, MT6358_VIBR_ANA_CON0, 0xf00),
 544         MT6358_LDO("ldo_vusb", VUSB, vusb_voltages, vusb_idx,
 545                    MT6358_LDO_VUSB_CON0_0, 0, MT6358_VUSB_ANA_CON0, 0x700),
 546         MT6358_LDO("ldo_vcamd", VCAMD, vcamd_voltages, vcamd_idx,
 547                    MT6358_LDO_VCAMD_CON0, 0, MT6358_VCAMD_ANA_CON0, 0xf00),
 548         MT6358_LDO("ldo_vefuse", VEFUSE, vefuse_voltages, vefuse_idx,
 549                    MT6358_LDO_VEFUSE_CON0, 0, MT6358_VEFUSE_ANA_CON0, 0xf00),
 550         MT6358_LDO("ldo_vmch", VMCH, vmch_vemc_voltages, vmch_vemc_idx,
 551                    MT6358_LDO_VMCH_CON0, 0, MT6358_VMCH_ANA_CON0, 0x700),
 552         MT6358_LDO("ldo_vcama1", VCAMA1, vcama_voltages, vcama_idx,
 553                    MT6358_LDO_VCAMA1_CON0, 0, MT6358_VCAMA1_ANA_CON0, 0xf00),
 554         MT6358_LDO("ldo_vemc", VEMC, vmch_vemc_voltages, vmch_vemc_idx,
 555                    MT6358_LDO_VEMC_CON0, 0, MT6358_VEMC_ANA_CON0, 0x700),
 556         MT6358_LDO("ldo_vcn33", VCN33, vcn33_voltages, vcn33_idx,
 557                    MT6358_LDO_VCN33_CON0_0, 0, MT6358_VCN33_ANA_CON0, 0x300),
 558         MT6358_LDO("ldo_vcama2", VCAMA2, vcama_voltages, vcama_idx,
 559                    MT6358_LDO_VCAMA2_CON0, 0, MT6358_VCAMA2_ANA_CON0, 0xf00),
 560         MT6358_LDO("ldo_vmc", VMC, vmc_voltages, vmc_idx,
 561                    MT6358_LDO_VMC_CON0, 0, MT6358_VMC_ANA_CON0, 0xf00),
 562         MT6358_LDO("ldo_vldo28", VLDO28, vldo28_voltages, vldo28_idx,
 563                    MT6358_LDO_VLDO28_CON0_0, 0,
 564                    MT6358_VLDO28_ANA_CON0, 0x300),
 565         MT6358_LDO("ldo_vsim2", VSIM2, vsim_voltages, vsim_idx,
 566                    MT6358_LDO_VSIM2_CON0, 0, MT6358_VSIM2_ANA_CON0, 0xf00),
 567         MT6358_LDO1("ldo_vsram_proc11", VSRAM_PROC11, 500000, 1293750, 6250,
 568                     MT6358_LDO_VSRAM_PROC11_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON0, 0x7f),
 569         MT6358_LDO1("ldo_vsram_others", VSRAM_OTHERS, 500000, 1293750, 6250,
 570                     MT6358_LDO_VSRAM_OTHERS_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON2, 0x7f),
 571         MT6358_LDO1("ldo_vsram_gpu", VSRAM_GPU, 500000, 1293750, 6250,
 572                     MT6358_LDO_VSRAM_GPU_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON3, 0x7f),
 573         MT6358_LDO1("ldo_vsram_proc12", VSRAM_PROC12, 500000, 1293750, 6250,
 574                     MT6358_LDO_VSRAM_PROC12_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON1, 0x7f),
 575 };
 576
 577 /* The array is indexed by id(MT6366_ID_XXX) */
 578 static const struct mt6358_regulator_info mt6366_regulators[] = {
 579         MT6366_BUCK("buck_vdram1", VDRAM1, 500000, 2087500, 12500,
 580                     0x7f, MT6358_BUCK_VDRAM1_DBG0, 0x7f, MT6358_VDRAM1_ANA_CON0, 8),
 581         MT6366_BUCK("buck_vcore", VCORE, 500000, 1293750, 6250,
 582                     0x7f, MT6358_BUCK_VCORE_DBG0, 0x7f, MT6358_VCORE_VGPU_ANA_CON0, 1),
 583         MT6366_BUCK("buck_vpa", VPA, 500000, 3650000, 50000,
 584                     0x3f, MT6358_BUCK_VPA_DBG0, 0x3f, MT6358_VPA_ANA_CON0, 3),
 585         MT6366_BUCK("buck_vproc11", VPROC11, 500000, 1293750, 6250,
 586                     0x7f, MT6358_BUCK_VPROC11_DBG0, 0x7f, MT6358_VPROC_ANA_CON0, 1),
 587         MT6366_BUCK("buck_vproc12", VPROC12, 500000, 1293750, 6250,
 588                     0x7f, MT6358_BUCK_VPROC12_DBG0, 0x7f, MT6358_VPROC_ANA_CON0, 2),
 589         MT6366_BUCK("buck_vgpu", VGPU, 500000, 1293750, 6250,
 590                     0x7f, MT6358_BUCK_VGPU_ELR0, 0x7f, MT6358_VCORE_VGPU_ANA_CON0, 2),
 591         MT6366_BUCK("buck_vs2", VS2, 500000, 2087500, 12500,
 592                     0x7f, MT6358_BUCK_VS2_DBG0, 0x7f, MT6358_VS2_ANA_CON0, 8),
 593         MT6366_BUCK("buck_vmodem", VMODEM, 500000, 1293750, 6250,
 594                     0x7f, MT6358_BUCK_VMODEM_DBG0, 0x7f, MT6358_VMODEM_ANA_CON0, 8),
 595         MT6366_BUCK("buck_vs1", VS1, 1000000, 2587500, 12500,
 596                     0x7f, MT6358_BUCK_VS1_DBG0, 0x7f, MT6358_VS1_ANA_CON0, 8),
 597         MT6366_REG_FIXED("ldo_vrf12", VRF12,
 598                          MT6358_LDO_VRF12_CON0, 0, 1200000),
 599         MT6366_REG_FIXED("ldo_vio18", VIO18,
 600                          MT6358_LDO_VIO18_CON0, 0, 1800000),
 601         MT6366_REG_FIXED("ldo_vcn18", VCN18, MT6358_LDO_VCN18_CON0, 0, 1800000),
 602         MT6366_REG_FIXED("ldo_vfe28", VFE28, MT6358_LDO_VFE28_CON0, 0, 2800000),
 603         MT6366_REG_FIXED("ldo_vcn28", VCN28, MT6358_LDO_VCN28_CON0, 0, 2800000),
 604         MT6366_REG_FIXED("ldo_vxo22", VXO22, MT6358_LDO_VXO22_CON0, 0, 2200000),
 605         MT6366_REG_FIXED("ldo_vaux18", VAUX18,
 606                          MT6358_LDO_VAUX18_CON0, 0, 1800000),
 607         MT6366_REG_FIXED("ldo_vbif28", VBIF28,
 608                          MT6358_LDO_VBIF28_CON0, 0, 2800000),
 609         MT6366_REG_FIXED("ldo_vio28", VIO28, MT6358_LDO_VIO28_CON0, 0, 2800000),
 610         MT6366_REG_FIXED("ldo_va12", VA12, MT6358_LDO_VA12_CON0, 0, 1200000),
 611         MT6366_REG_FIXED("ldo_vrf18", VRF18, MT6358_LDO_VRF18_CON0, 0, 1800000),
 612         MT6366_REG_FIXED("ldo_vaud28", VAUD28,
 613                          MT6358_LDO_VAUD28_CON0, 0, 2800000),
 614         MT6366_LDO("ldo_vdram2", VDRAM2, vdram2_voltages, vdram2_idx,
 615                    MT6358_LDO_VDRAM2_CON0, 0, MT6358_LDO_VDRAM2_ELR0, 0x10),
 616         MT6366_LDO("ldo_vsim1", VSIM1, vsim_voltages, vsim_idx,
 617                    MT6358_LDO_VSIM1_CON0, 0, MT6358_VSIM1_ANA_CON0, 0xf00),
 618         MT6366_LDO("ldo_vibr", VIBR, vibr_voltages, vibr_idx,
 619                    MT6358_LDO_VIBR_CON0, 0, MT6358_VIBR_ANA_CON0, 0xf00),
 620         MT6366_LDO("ldo_vusb", VUSB, vusb_voltages, vusb_idx,
 621                    MT6358_LDO_VUSB_CON0_0, 0, MT6358_VUSB_ANA_CON0, 0x700),
 622         MT6366_LDO("ldo_vefuse", VEFUSE, vefuse_voltages, vefuse_idx,
 623                    MT6358_LDO_VEFUSE_CON0, 0, MT6358_VEFUSE_ANA_CON0, 0xf00),
 624         MT6366_LDO("ldo_vmch", VMCH, vmch_vemc_voltages, vmch_vemc_idx,
 625                    MT6358_LDO_VMCH_CON0, 0, MT6358_VMCH_ANA_CON0, 0x700),
 626         MT6366_LDO("ldo_vemc", VEMC, vmch_vemc_voltages, vmch_vemc_idx,
 627                    MT6358_LDO_VEMC_CON0, 0, MT6358_VEMC_ANA_CON0, 0x700),
 628         MT6366_LDO("ldo_vcn33", VCN33, vcn33_voltages, vcn33_idx,
 629                    MT6358_LDO_VCN33_CON0_0, 0, MT6358_VCN33_ANA_CON0, 0x300),
 630         MT6366_LDO("ldo_vmc", VMC, vmc_voltages, vmc_idx,
 631                    MT6358_LDO_VMC_CON0, 0, MT6358_VMC_ANA_CON0, 0xf00),
 632         MT6366_LDO("ldo_vsim2", VSIM2, vsim_voltages, vsim_idx,
 633                    MT6358_LDO_VSIM2_CON0, 0, MT6358_VSIM2_ANA_CON0, 0xf00),
 634         MT6366_LDO1("ldo_vsram_proc11", VSRAM_PROC11, 500000, 1293750, 6250,
 635                     MT6358_LDO_VSRAM_PROC11_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON0, 0x7f),
 636         MT6366_LDO1("ldo_vsram_others", VSRAM_OTHERS, 500000, 1293750, 6250,
 637                     MT6358_LDO_VSRAM_OTHERS_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON2, 0x7f),
 638         MT6366_LDO1("ldo_vsram_gpu", VSRAM_GPU, 500000, 1293750, 6250,
 639                     MT6358_LDO_VSRAM_GPU_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON3, 0x7f),
 640         MT6366_LDO1("ldo_vsram_proc12", VSRAM_PROC12, 500000, 1293750, 6250,
 641                     MT6358_LDO_VSRAM_PROC12_DBG0, 0x7f00, MT6358_LDO_VSRAM_CON1, 0x7f),
 642 };
 643
 644 static int mt6358_sync_vcn33_setting(struct device *dev)
 645 {
 646         struct mt6397_chip *mt6397 = dev_get_drvdata(dev->parent);
 647         unsigned int val;
 648         int ret;
 649
 650         /*
 651          * VCN33_WIFI and VCN33_BT are two separate enable bits for the same
 652          * regulator. They share the same voltage setting and output pin.
 653          * Instead of having two potentially conflicting regulators, just have
 654          * one VCN33 regulator. Sync the two enable bits and only use one in
 655          * the regulator device.
 656          */
 657         ret = regmap_read(mt6397->regmap, MT6358_LDO_VCN33_CON0_1, &val);
 658         if (ret) {
 659                 dev_err(dev, "Failed to read VCN33_WIFI setting\n");
 660                 return ret;
 661         }
 662
 663         if (!(val & BIT(0)))
 664                 return 0;
 665
 666         /* Sync VCN33_WIFI enable status to VCN33_BT */
 667         ret = regmap_update_bits(mt6397->regmap, MT6358_LDO_VCN33_CON0_0, BIT(0), BIT(0));
 668         if (ret) {
 669                 dev_err(dev, "Failed to sync VCN33_WIFI setting to VCN33_BT\n");
 670                 return ret;
 671         }
 672
 673         /* Disable VCN33_WIFI */
 674         ret = regmap_update_bits(mt6397->regmap, MT6358_LDO_VCN33_CON0_1, BIT(0), 0);
 675         if (ret) {
 676                 dev_err(dev, "Failed to disable VCN33_WIFI\n");
 677                 return ret;
 678         }
 679
 680         return 0;
 681 }
 682
 683 static int mt6358_regulator_probe(struct platform_device *pdev)
 684 {
 685         struct mt6397_chip *mt6397 = dev_get_drvdata(pdev->dev.parent);
 686         struct regulator_config config = {};
 687         struct regulator_dev *rdev;
 688         const struct mt6358_regulator_info *mt6358_info;
 689         int i, max_regulator, ret;
 690
 691         if (mt6397->chip_id == MT6366_CHIP_ID) {
 692                 max_regulator = MT6366_MAX_REGULATOR;
 693                 mt6358_info = mt6366_regulators;
 694         } else {
 695                 max_regulator = MT6358_MAX_REGULATOR;
 696                 mt6358_info = mt6358_regulators;
 697         }
 698
 699         ret = mt6358_sync_vcn33_setting(&pdev->dev);
 700         if (ret)
 701                 return ret;
 702
 703         for (i = 0; i < max_regulator; i++) {
 704                 config.dev = &pdev->dev;
 705                 config.regmap = mt6397->regmap;
 706
 707                 rdev = devm_regulator_register(&pdev->dev,
 708                                                &mt6358_info[i].desc,
 709                                                &config);
 710                 if (IS_ERR(rdev)) {
 711                         dev_err(&pdev->dev, "failed to register %s\n",
 712                                 mt6358_info[i].desc.name);
 713                         return PTR_ERR(rdev);
 714                 }
 715         }
 716
 717         return 0;
 718 }
 719
 720 static const struct platform_device_id mt6358_platform_ids[] = {
 721         {"mt6358-regulator", 0},
 722         { /* sentinel */ },
 723 };
 724 MODULE_DEVICE_TABLE(platform, mt6358_platform_ids);
 725
 726 static struct platform_driver mt6358_regulator_driver = {
 727         .driver = {
 728                 .name = "mt6358-regulator",
 729                 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
 730         },
 731         .probe = mt6358_regulator_probe,
 732         .id_table = mt6358_platform_ids,
 733 };
 734
 735 module_platform_driver(mt6358_regulator_driver);
 736
 737 MODULE_AUTHOR("Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>");
 738 MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6358 PMIC");
 739 MODULE_LICENSE("GPL");