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 MT6358_BUCK(match, vreg, min, max, step,                \
  38         volt_ranges, vosel_mask, _da_vsel_reg, _da_vsel_mask,   \
  39         _modeset_reg, _modeset_shift)           \
  40 [MT6358_ID_##vreg] = {  \
  41         .desc = {       \
  42                 .name = #vreg,  \
  43                 .of_match = of_match_ptr(match),        \
  44                 .ops = &mt6358_volt_range_ops,  \
  45                 .type = REGULATOR_VOLTAGE,      \
  46                 .id = MT6358_ID_##vreg,         \
  47                 .owner = THIS_MODULE,           \
  48                 .n_voltages = ((max) - (min)) / (step) + 1,     \
  49                 .linear_ranges = volt_ranges,           \
  50                 .n_linear_ranges = ARRAY_SIZE(volt_ranges),     \
  51                 .vsel_reg = MT6358_BUCK_##vreg##_ELR0,  \
  52                 .vsel_mask = vosel_mask,        \
  53                 .enable_reg = MT6358_BUCK_##vreg##_CON0,        \
  54                 .enable_mask = BIT(0),  \
  55                 .of_map_mode = mt6358_map_mode, \
  56         },      \
  57         .status_reg = MT6358_BUCK_##vreg##_DBG1,        \
  58         .qi = BIT(0),   \
  59         .da_vsel_reg = _da_vsel_reg,    \
  60         .da_vsel_mask = _da_vsel_mask,  \
  61         .modeset_reg = _modeset_reg,    \
  62         .modeset_mask = BIT(_modeset_shift),    \
  63 }
  64
  65 #define MT6358_LDO(match, vreg, ldo_volt_table, \
  66         ldo_index_table, enreg, enbit, vosel,   \
  67         vosel_mask)     \
  68 [MT6358_ID_##vreg] = {  \
  69         .desc = {       \
  70                 .name = #vreg,  \
  71                 .of_match = of_match_ptr(match),        \
  72                 .ops = &mt6358_volt_table_ops,  \
  73                 .type = REGULATOR_VOLTAGE,      \
  74                 .id = MT6358_ID_##vreg, \
  75                 .owner = THIS_MODULE,   \
  76                 .n_voltages = ARRAY_SIZE(ldo_volt_table),       \
  77                 .volt_table = ldo_volt_table,   \
  78                 .vsel_reg = vosel,      \
  79                 .vsel_mask = vosel_mask,        \
  80                 .enable_reg = enreg,    \
  81                 .enable_mask = BIT(enbit),      \
  82         },      \
  83         .status_reg = MT6358_LDO_##vreg##_CON1, \
  84         .qi = BIT(15),  \
  85         .index_table = ldo_index_table, \
  86         .n_table = ARRAY_SIZE(ldo_index_table), \
  87 }
  88
  89 #define MT6358_LDO1(match, vreg, min, max, step,        \
  90         volt_ranges, _da_vsel_reg, _da_vsel_mask,       \
  91         vosel, vosel_mask)      \
  92 [MT6358_ID_##vreg] = {  \
  93         .desc = {       \
  94                 .name = #vreg,  \
  95                 .of_match = of_match_ptr(match),        \
  96                 .ops = &mt6358_volt_range_ops,  \
  97                 .type = REGULATOR_VOLTAGE,      \
  98                 .id = MT6358_ID_##vreg, \
  99                 .owner = THIS_MODULE,   \
 100                 .n_voltages = ((max) - (min)) / (step) + 1,     \
 101                 .linear_ranges = volt_ranges,   \
 102                 .n_linear_ranges = ARRAY_SIZE(volt_ranges),     \
 103                 .vsel_reg = vosel,      \
 104                 .vsel_mask = vosel_mask,        \
 105                 .enable_reg = MT6358_LDO_##vreg##_CON0, \
 106                 .enable_mask = BIT(0),  \
 107         },      \
 108         .da_vsel_reg = _da_vsel_reg,    \
 109         .da_vsel_mask = _da_vsel_mask,  \
 110         .status_reg = MT6358_LDO_##vreg##_DBG1, \
 111         .qi = BIT(0),   \
 112 }
 113
 114 #define MT6358_REG_FIXED(match, vreg,   \
 115         enreg, enbit, volt)     \
 116 [MT6358_ID_##vreg] = {  \
 117         .desc = {       \
 118                 .name = #vreg,  \
 119                 .of_match = of_match_ptr(match),        \
 120                 .ops = &mt6358_volt_fixed_ops,  \
 121                 .type = REGULATOR_VOLTAGE,      \
 122                 .id = MT6358_ID_##vreg, \
 123                 .owner = THIS_MODULE,   \
 124                 .n_voltages = 1,        \
 125                 .enable_reg = enreg,    \
 126                 .enable_mask = BIT(enbit),      \
 127                 .min_uV = volt, \
 128         },      \
 129         .status_reg = MT6358_LDO_##vreg##_CON1, \
 130         .qi = BIT(15),                                                  \
 131 }
 132
 133 static const struct linear_range buck_volt_range1[] = {
 134         REGULATOR_LINEAR_RANGE(500000, 0, 0x7f, 6250),
 135 };
 136
 137 static const struct linear_range buck_volt_range2[] = {
 138         REGULATOR_LINEAR_RANGE(500000, 0, 0x7f, 12500),
 139 };
 140
 141 static const struct linear_range buck_volt_range3[] = {
 142         REGULATOR_LINEAR_RANGE(500000, 0, 0x3f, 50000),
 143 };
 144
 145 static const struct linear_range buck_volt_range4[] = {
 146         REGULATOR_LINEAR_RANGE(1000000, 0, 0x7f, 12500),
 147 };
 148
 149 static const unsigned int vdram2_voltages[] = {
 150         600000, 1800000,
 151 };
 152
 153 static const unsigned int vsim_voltages[] = {
 154         1700000, 1800000, 2700000, 3000000, 3100000,
 155 };
 156
 157 static const unsigned int vibr_voltages[] = {
 158         1200000, 1300000, 1500000, 1800000,
 159         2000000, 2800000, 3000000, 3300000,
 160 };
 161
 162 static const unsigned int vusb_voltages[] = {
 163         3000000, 3100000,
 164 };
 165
 166 static const unsigned int vcamd_voltages[] = {
 167         900000, 1000000, 1100000, 1200000,
 168         1300000, 1500000, 1800000,
 169 };
 170
 171 static const unsigned int vefuse_voltages[] = {
 172         1700000, 1800000, 1900000,
 173 };
 174
 175 static const unsigned int vmch_vemc_voltages[] = {
 176         2900000, 3000000, 3300000,
 177 };
 178
 179 static const unsigned int vcama_voltages[] = {
 180         1800000, 2500000, 2700000,
 181         2800000, 2900000, 3000000,
 182 };
 183
 184 static const unsigned int vcn33_bt_wifi_voltages[] = {
 185         3300000, 3400000, 3500000,
 186 };
 187
 188 static const unsigned int vmc_voltages[] = {
 189         1800000, 2900000, 3000000, 3300000,
 190 };
 191
 192 static const unsigned int vldo28_voltages[] = {
 193         2800000, 3000000,
 194 };
 195
 196 static const u32 vdram2_idx[] = {
 197         0, 12,
 198 };
 199
 200 static const u32 vsim_idx[] = {
 201         3, 4, 8, 11, 12,
 202 };
 203
 204 static const u32 vibr_idx[] = {
 205         0, 1, 2, 4, 5, 9, 11, 13,
 206 };
 207
 208 static const u32 vusb_idx[] = {
 209         3, 4,
 210 };
 211
 212 static const u32 vcamd_idx[] = {
 213         3, 4, 5, 6, 7, 9, 12,
 214 };
 215
 216 static const u32 vefuse_idx[] = {
 217         11, 12, 13,
 218 };
 219
 220 static const u32 vmch_vemc_idx[] = {
 221         2, 3, 5,
 222 };
 223
 224 static const u32 vcama_idx[] = {
 225         0, 7, 9, 10, 11, 12,
 226 };
 227
 228 static const u32 vcn33_bt_wifi_idx[] = {
 229         1, 2, 3,
 230 };
 231
 232 static const u32 vmc_idx[] = {
 233         4, 10, 11, 13,
 234 };
 235
 236 static const u32 vldo28_idx[] = {
 237         1, 3,
 238 };
 239
 240 static unsigned int mt6358_map_mode(unsigned int mode)
 241 {
 242         return mode == MT6358_BUCK_MODE_AUTO ?
 243                 REGULATOR_MODE_NORMAL : REGULATOR_MODE_FAST;
 244 }
 245
 246 static int mt6358_set_voltage_sel(struct regulator_dev *rdev,
 247                                   unsigned int selector)
 248 {
 249         int idx, ret;
 250         const u32 *pvol;
 251         struct mt6358_regulator_info *info = rdev_get_drvdata(rdev);
 252
 253         pvol = info->index_table;
 254
 255         idx = pvol[selector];
 256         idx <<= ffs(info->desc.vsel_mask) - 1;
 257         ret = regmap_update_bits(rdev->regmap, info->desc.vsel_reg,
 258                                  info->desc.vsel_mask, idx);
 259
 260         return ret;
 261 }
 262
 263 static int mt6358_get_voltage_sel(struct regulator_dev *rdev)
 264 {
 265         int idx, ret;
 266         u32 selector;
 267         struct mt6358_regulator_info *info = rdev_get_drvdata(rdev);
 268         const u32 *pvol;
 269
 270         ret = regmap_read(rdev->regmap, info->desc.vsel_reg, &selector);
 271         if (ret != 0) {
 272                 dev_info(&rdev->dev,
 273                          "Failed to get mt6358 %s vsel reg: %d\n",
 274                          info->desc.name, ret);
 275                 return ret;
 276         }
 277
 278         selector = (selector & info->desc.vsel_mask) >>
 279                         (ffs(info->desc.vsel_mask) - 1);
 280         pvol = info->index_table;
 281         for (idx = 0; idx < info->desc.n_voltages; idx++) {
 282                 if (pvol[idx] == selector)
 283                         return idx;
 284         }
 285
 286         return -EINVAL;
 287 }
 288
 289 static int mt6358_get_buck_voltage_sel(struct regulator_dev *rdev)
 290 {
 291         int ret, regval;
 292         struct mt6358_regulator_info *info = rdev_get_drvdata(rdev);
 293
 294         ret = regmap_read(rdev->regmap, info->da_vsel_reg, &regval);
 295         if (ret != 0) {
 296                 dev_err(&rdev->dev,
 297                         "Failed to get mt6358 Buck %s vsel reg: %d\n",
 298                         info->desc.name, ret);
 299                 return ret;
 300         }
 301
 302         ret = (regval & info->da_vsel_mask) >> (ffs(info->da_vsel_mask) - 1);
 303
 304         return ret;
 305 }
 306
 307 static int mt6358_get_status(struct regulator_dev *rdev)
 308 {
 309         int ret;
 310         u32 regval;
 311         struct mt6358_regulator_info *info = rdev_get_drvdata(rdev);
 312
 313         ret = regmap_read(rdev->regmap, info->status_reg, &regval);
 314         if (ret != 0) {
 315                 dev_info(&rdev->dev, "Failed to get enable reg: %d\n", ret);
 316                 return ret;
 317         }
 318
 319         return (regval & info->qi) ? REGULATOR_STATUS_ON : REGULATOR_STATUS_OFF;
 320 }
 321
 322 static int mt6358_regulator_set_mode(struct regulator_dev *rdev,
 323                                      unsigned int mode)
 324 {
 325         struct mt6358_regulator_info *info = rdev_get_drvdata(rdev);
 326         int val;
 327
 328         switch (mode) {
 329         case REGULATOR_MODE_FAST:
 330                 val = MT6358_BUCK_MODE_FORCE_PWM;
 331                 break;
 332         case REGULATOR_MODE_NORMAL:
 333                 val = MT6358_BUCK_MODE_AUTO;
 334                 break;
 335         default:
 336                 return -EINVAL;
 337         }
 338
 339         dev_dbg(&rdev->dev, "mt6358 buck set_mode %#x, %#x, %#x\n",
 340                 info->modeset_reg, info->modeset_mask, val);
 341
 342         val <<= ffs(info->modeset_mask) - 1;
 343
 344         return regmap_update_bits(rdev->regmap, info->modeset_reg,
 345                                   info->modeset_mask, val);
 346 }
 347
 348 static unsigned int mt6358_regulator_get_mode(struct regulator_dev *rdev)
 349 {
 350         struct mt6358_regulator_info *info = rdev_get_drvdata(rdev);
 351         int ret, regval;
 352
 353         ret = regmap_read(rdev->regmap, info->modeset_reg, &regval);
 354         if (ret != 0) {
 355                 dev_err(&rdev->dev,
 356                         "Failed to get mt6358 buck mode: %d\n", ret);
 357                 return ret;
 358         }
 359
 360         switch ((regval & info->modeset_mask) >> (ffs(info->modeset_mask) - 1)) {
 361         case MT6358_BUCK_MODE_AUTO:
 362                 return REGULATOR_MODE_NORMAL;
 363         case MT6358_BUCK_MODE_FORCE_PWM:
 364                 return REGULATOR_MODE_FAST;
 365         default:
 366                 return -EINVAL;
 367         }
 368 }
 369
 370 static const struct regulator_ops mt6358_volt_range_ops = {
 371         .list_voltage = regulator_list_voltage_linear_range,
 372         .map_voltage = regulator_map_voltage_linear_range,
 373         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 374         .get_voltage_sel = mt6358_get_buck_voltage_sel,
 375         .set_voltage_time_sel = regulator_set_voltage_time_sel,
 376         .enable = regulator_enable_regmap,
 377         .disable = regulator_disable_regmap,
 378         .is_enabled = regulator_is_enabled_regmap,
 379         .get_status = mt6358_get_status,
 380         .set_mode = mt6358_regulator_set_mode,
 381         .get_mode = mt6358_regulator_get_mode,
 382 };
 383
 384 static const struct regulator_ops mt6358_volt_table_ops = {
 385         .list_voltage = regulator_list_voltage_table,
 386         .map_voltage = regulator_map_voltage_iterate,
 387         .set_voltage_sel = mt6358_set_voltage_sel,
 388         .get_voltage_sel = mt6358_get_voltage_sel,
 389         .set_voltage_time_sel = regulator_set_voltage_time_sel,
 390         .enable = regulator_enable_regmap,
 391         .disable = regulator_disable_regmap,
 392         .is_enabled = regulator_is_enabled_regmap,
 393         .get_status = mt6358_get_status,
 394 };
 395
 396 static const struct regulator_ops mt6358_volt_fixed_ops = {
 397         .list_voltage = regulator_list_voltage_linear,
 398         .enable = regulator_enable_regmap,
 399         .disable = regulator_disable_regmap,
 400         .is_enabled = regulator_is_enabled_regmap,
 401         .get_status = mt6358_get_status,
 402 };
 403
 404 /* The array is indexed by id(MT6358_ID_XXX) */
 405 static struct mt6358_regulator_info mt6358_regulators[] = {
 406         MT6358_BUCK("buck_vdram1", VDRAM1, 500000, 2087500, 12500,
 407                     buck_volt_range2, 0x7f, MT6358_BUCK_VDRAM1_DBG0, 0x7f,
 408                     MT6358_VDRAM1_ANA_CON0, 8),
 409         MT6358_BUCK("buck_vcore", VCORE, 500000, 1293750, 6250,
 410                     buck_volt_range1, 0x7f, MT6358_BUCK_VCORE_DBG0, 0x7f,
 411                     MT6358_VCORE_VGPU_ANA_CON0, 1),
 412         MT6358_BUCK("buck_vpa", VPA, 500000, 3650000, 50000,
 413                     buck_volt_range3, 0x3f, MT6358_BUCK_VPA_DBG0, 0x3f,
 414                     MT6358_VPA_ANA_CON0, 3),
 415         MT6358_BUCK("buck_vproc11", VPROC11, 500000, 1293750, 6250,
 416                     buck_volt_range1, 0x7f, MT6358_BUCK_VPROC11_DBG0, 0x7f,
 417                     MT6358_VPROC_ANA_CON0, 1),
 418         MT6358_BUCK("buck_vproc12", VPROC12, 500000, 1293750, 6250,
 419                     buck_volt_range1, 0x7f, MT6358_BUCK_VPROC12_DBG0, 0x7f,
 420                     MT6358_VPROC_ANA_CON0, 2),
 421         MT6358_BUCK("buck_vgpu", VGPU, 500000, 1293750, 6250,
 422                     buck_volt_range1, 0x7f, MT6358_BUCK_VGPU_ELR0, 0x7f,
 423                     MT6358_VCORE_VGPU_ANA_CON0, 2),
 424         MT6358_BUCK("buck_vs2", VS2, 500000, 2087500, 12500,
 425                     buck_volt_range2, 0x7f, MT6358_BUCK_VS2_DBG0, 0x7f,
 426                     MT6358_VS2_ANA_CON0, 8),
 427         MT6358_BUCK("buck_vmodem", VMODEM, 500000, 1293750, 6250,
 428                     buck_volt_range1, 0x7f, MT6358_BUCK_VMODEM_DBG0, 0x7f,
 429                     MT6358_VMODEM_ANA_CON0, 8),
 430         MT6358_BUCK("buck_vs1", VS1, 1000000, 2587500, 12500,
 431                     buck_volt_range4, 0x7f, MT6358_BUCK_VS1_DBG0, 0x7f,
 432                     MT6358_VS1_ANA_CON0, 8),
 433         MT6358_REG_FIXED("ldo_vrf12", VRF12,
 434                          MT6358_LDO_VRF12_CON0, 0, 1200000),
 435         MT6358_REG_FIXED("ldo_vio18", VIO18,
 436                          MT6358_LDO_VIO18_CON0, 0, 1800000),
 437         MT6358_REG_FIXED("ldo_vcamio", VCAMIO,
 438                          MT6358_LDO_VCAMIO_CON0, 0, 1800000),
 439         MT6358_REG_FIXED("ldo_vcn18", VCN18, MT6358_LDO_VCN18_CON0, 0, 1800000),
 440         MT6358_REG_FIXED("ldo_vfe28", VFE28, MT6358_LDO_VFE28_CON0, 0, 2800000),
 441         MT6358_REG_FIXED("ldo_vcn28", VCN28, MT6358_LDO_VCN28_CON0, 0, 2800000),
 442         MT6358_REG_FIXED("ldo_vxo22", VXO22, MT6358_LDO_VXO22_CON0, 0, 2200000),
 443         MT6358_REG_FIXED("ldo_vaux18", VAUX18,
 444                          MT6358_LDO_VAUX18_CON0, 0, 1800000),
 445         MT6358_REG_FIXED("ldo_vbif28", VBIF28,
 446                          MT6358_LDO_VBIF28_CON0, 0, 2800000),
 447         MT6358_REG_FIXED("ldo_vio28", VIO28, MT6358_LDO_VIO28_CON0, 0, 2800000),
 448         MT6358_REG_FIXED("ldo_va12", VA12, MT6358_LDO_VA12_CON0, 0, 1200000),
 449         MT6358_REG_FIXED("ldo_vrf18", VRF18, MT6358_LDO_VRF18_CON0, 0, 1800000),
 450         MT6358_REG_FIXED("ldo_vaud28", VAUD28,
 451                          MT6358_LDO_VAUD28_CON0, 0, 2800000),
 452         MT6358_LDO("ldo_vdram2", VDRAM2, vdram2_voltages, vdram2_idx,
 453                    MT6358_LDO_VDRAM2_CON0, 0, MT6358_LDO_VDRAM2_ELR0, 0xf),
 454         MT6358_LDO("ldo_vsim1", VSIM1, vsim_voltages, vsim_idx,
 455                    MT6358_LDO_VSIM1_CON0, 0, MT6358_VSIM1_ANA_CON0, 0xf00),
 456         MT6358_LDO("ldo_vibr", VIBR, vibr_voltages, vibr_idx,
 457                    MT6358_LDO_VIBR_CON0, 0, MT6358_VIBR_ANA_CON0, 0xf00),
 458         MT6358_LDO("ldo_vusb", VUSB, vusb_voltages, vusb_idx,
 459                    MT6358_LDO_VUSB_CON0_0, 0, MT6358_VUSB_ANA_CON0, 0x700),
 460         MT6358_LDO("ldo_vcamd", VCAMD, vcamd_voltages, vcamd_idx,
 461                    MT6358_LDO_VCAMD_CON0, 0, MT6358_VCAMD_ANA_CON0, 0xf00),
 462         MT6358_LDO("ldo_vefuse", VEFUSE, vefuse_voltages, vefuse_idx,
 463                    MT6358_LDO_VEFUSE_CON0, 0, MT6358_VEFUSE_ANA_CON0, 0xf00),
 464         MT6358_LDO("ldo_vmch", VMCH, vmch_vemc_voltages, vmch_vemc_idx,
 465                    MT6358_LDO_VMCH_CON0, 0, MT6358_VMCH_ANA_CON0, 0x700),
 466         MT6358_LDO("ldo_vcama1", VCAMA1, vcama_voltages, vcama_idx,
 467                    MT6358_LDO_VCAMA1_CON0, 0, MT6358_VCAMA1_ANA_CON0, 0xf00),
 468         MT6358_LDO("ldo_vemc", VEMC, vmch_vemc_voltages, vmch_vemc_idx,
 469                    MT6358_LDO_VEMC_CON0, 0, MT6358_VEMC_ANA_CON0, 0x700),
 470         MT6358_LDO("ldo_vcn33_bt", VCN33_BT, vcn33_bt_wifi_voltages,
 471                    vcn33_bt_wifi_idx, MT6358_LDO_VCN33_CON0_0,
 472                    0, MT6358_VCN33_ANA_CON0, 0x300),
 473         MT6358_LDO("ldo_vcn33_wifi", VCN33_WIFI, vcn33_bt_wifi_voltages,
 474                    vcn33_bt_wifi_idx, MT6358_LDO_VCN33_CON0_1,
 475                    0, MT6358_VCN33_ANA_CON0, 0x300),
 476         MT6358_LDO("ldo_vcama2", VCAMA2, vcama_voltages, vcama_idx,
 477                    MT6358_LDO_VCAMA2_CON0, 0, MT6358_VCAMA2_ANA_CON0, 0xf00),
 478         MT6358_LDO("ldo_vmc", VMC, vmc_voltages, vmc_idx,
 479                    MT6358_LDO_VMC_CON0, 0, MT6358_VMC_ANA_CON0, 0xf00),
 480         MT6358_LDO("ldo_vldo28", VLDO28, vldo28_voltages, vldo28_idx,
 481                    MT6358_LDO_VLDO28_CON0_0, 0,
 482                    MT6358_VLDO28_ANA_CON0, 0x300),
 483         MT6358_LDO("ldo_vsim2", VSIM2, vsim_voltages, vsim_idx,
 484                    MT6358_LDO_VSIM2_CON0, 0, MT6358_VSIM2_ANA_CON0, 0xf00),
 485         MT6358_LDO1("ldo_vsram_proc11", VSRAM_PROC11, 500000, 1293750, 6250,
 486                     buck_volt_range1, MT6358_LDO_VSRAM_PROC11_DBG0, 0x7f00,
 487                     MT6358_LDO_VSRAM_CON0, 0x7f),
 488         MT6358_LDO1("ldo_vsram_others", VSRAM_OTHERS, 500000, 1293750, 6250,
 489                     buck_volt_range1, MT6358_LDO_VSRAM_OTHERS_DBG0, 0x7f00,
 490                     MT6358_LDO_VSRAM_CON2, 0x7f),
 491         MT6358_LDO1("ldo_vsram_gpu", VSRAM_GPU, 500000, 1293750, 6250,
 492                     buck_volt_range1, MT6358_LDO_VSRAM_GPU_DBG0, 0x7f00,
 493                     MT6358_LDO_VSRAM_CON3, 0x7f),
 494         MT6358_LDO1("ldo_vsram_proc12", VSRAM_PROC12, 500000, 1293750, 6250,
 495                     buck_volt_range1, MT6358_LDO_VSRAM_PROC12_DBG0, 0x7f00,
 496                     MT6358_LDO_VSRAM_CON1, 0x7f),
 497 };
 498
 499 static int mt6358_regulator_probe(struct platform_device *pdev)
 500 {
 501         struct mt6397_chip *mt6397 = dev_get_drvdata(pdev->dev.parent);
 502         struct regulator_config config = {};
 503         struct regulator_dev *rdev;
 504         int i;
 505
 506         for (i = 0; i < MT6358_MAX_REGULATOR; i++) {
 507                 config.dev = &pdev->dev;
 508                 config.driver_data = &mt6358_regulators[i];
 509                 config.regmap = mt6397->regmap;
 510
 511                 rdev = devm_regulator_register(&pdev->dev,
 512                                                &mt6358_regulators[i].desc,
 513                                                &config);
 514                 if (IS_ERR(rdev)) {
 515                         dev_err(&pdev->dev, "failed to register %s\n",
 516                                 mt6358_regulators[i].desc.name);
 517                         return PTR_ERR(rdev);
 518                 }
 519         }
 520
 521         return 0;
 522 }
 523
 524 static const struct platform_device_id mt6358_platform_ids[] = {
 525         {"mt6358-regulator", 0},
 526         { /* sentinel */ },
 527 };
 528 MODULE_DEVICE_TABLE(platform, mt6358_platform_ids);
 529
 530 static struct platform_driver mt6358_regulator_driver = {
 531         .driver = {
 532                 .name = "mt6358-regulator",
 533         },
 534         .probe = mt6358_regulator_probe,
 535         .id_table = mt6358_platform_ids,
 536 };
 537
 538 module_platform_driver(mt6358_regulator_driver);
 539
 540 MODULE_AUTHOR("Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>");
 541 MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6358 PMIC");
 542 MODULE_LICENSE("GPL");