drivers/regulator/pca9450-regulator.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright 2020 NXP.
   4  * NXP PCA9450 pmic driver
   5  */
   6
   7 #include <linux/err.h>
   8 #include <linux/i2c.h>
   9 #include <linux/interrupt.h>
  10 #include <linux/kernel.h>
  11 #include <linux/module.h>
  12 #include <linux/of.h>
  13 #include <linux/of_device.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/regulator/driver.h>
  16 #include <linux/regulator/machine.h>
  17 #include <linux/regulator/of_regulator.h>
  18 #include <linux/regulator/pca9450.h>
  19
  20 struct pc9450_dvs_config {
  21         unsigned int run_reg; /* dvs0 */
  22         unsigned int run_mask;
  23         unsigned int standby_reg; /* dvs1 */
  24         unsigned int standby_mask;
  25 };
  26
  27 struct pca9450_regulator_desc {
  28         struct regulator_desc desc;
  29         const struct pc9450_dvs_config dvs;
  30 };
  31
  32 struct pca9450 {
  33         struct device *dev;
  34         struct regmap *regmap;
  35         enum pca9450_chip_type type;
  36         unsigned int rcnt;
  37         int irq;
  38 };
  39
  40 static const struct regmap_range pca9450_status_range = {
  41         .range_min = PCA9450_REG_INT1,
  42         .range_max = PCA9450_REG_PWRON_STAT,
  43 };
  44
  45 static const struct regmap_access_table pca9450_volatile_regs = {
  46         .yes_ranges = &pca9450_status_range,
  47         .n_yes_ranges = 1,
  48 };
  49
  50 static const struct regmap_config pca9450_regmap_config = {
  51         .reg_bits = 8,
  52         .val_bits = 8,
  53         .volatile_table = &pca9450_volatile_regs,
  54         .max_register = PCA9450_MAX_REGISTER - 1,
  55         .cache_type = REGCACHE_RBTREE,
  56 };
  57
  58 /*
  59  * BUCK1/2/3
  60  * BUCK1RAM[1:0] BUCK1 DVS ramp rate setting
  61  * 00: 25mV/1usec
  62  * 01: 25mV/2usec
  63  * 10: 25mV/4usec
  64  * 11: 25mV/8usec
  65  */
  66 static int pca9450_dvs_set_ramp_delay(struct regulator_dev *rdev,
  67                                       int ramp_delay)
  68 {
  69         int id = rdev_get_id(rdev);
  70         unsigned int ramp_value;
  71
  72         switch (ramp_delay) {
  73         case 1 ... 3125:
  74                 ramp_value = BUCK1_RAMP_3P125MV;
  75                 break;
  76         case 3126 ... 6250:
  77                 ramp_value = BUCK1_RAMP_6P25MV;
  78                 break;
  79         case 6251 ... 12500:
  80                 ramp_value = BUCK1_RAMP_12P5MV;
  81                 break;
  82         case 12501 ... 25000:
  83                 ramp_value = BUCK1_RAMP_25MV;
  84                 break;
  85         default:
  86                 ramp_value = BUCK1_RAMP_25MV;
  87         }
  88
  89         return regmap_update_bits(rdev->regmap, PCA9450_REG_BUCK1CTRL + id * 3,
  90                                   BUCK1_RAMP_MASK, ramp_value << 6);
  91 }
  92
  93 static const struct regulator_ops pca9450_dvs_buck_regulator_ops = {
  94         .enable = regulator_enable_regmap,
  95         .disable = regulator_disable_regmap,
  96         .is_enabled = regulator_is_enabled_regmap,
  97         .list_voltage = regulator_list_voltage_linear_range,
  98         .set_voltage_sel = regulator_set_voltage_sel_regmap,
  99         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 100         .set_voltage_time_sel = regulator_set_voltage_time_sel,
 101         .set_ramp_delay = pca9450_dvs_set_ramp_delay,
 102 };
 103
 104 static const struct regulator_ops pca9450_buck_regulator_ops = {
 105         .enable = regulator_enable_regmap,
 106         .disable = regulator_disable_regmap,
 107         .is_enabled = regulator_is_enabled_regmap,
 108         .list_voltage = regulator_list_voltage_linear_range,
 109         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 110         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 111         .set_voltage_time_sel = regulator_set_voltage_time_sel,
 112 };
 113
 114 static const struct regulator_ops pca9450_ldo_regulator_ops = {
 115         .enable = regulator_enable_regmap,
 116         .disable = regulator_disable_regmap,
 117         .is_enabled = regulator_is_enabled_regmap,
 118         .list_voltage = regulator_list_voltage_linear_range,
 119         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 120         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 121 };
 122
 123 /*
 124  * BUCK1/2/3
 125  * 0.60 to 2.1875V (12.5mV step)
 126  */
 127 static const struct linear_range pca9450_dvs_buck_volts[] = {
 128         REGULATOR_LINEAR_RANGE(600000,  0x00, 0x7F, 12500),
 129 };
 130
 131 /*
 132  * BUCK4/5/6
 133  * 0.6V to 3.4V (25mV step)
 134  */
 135 static const struct linear_range pca9450_buck_volts[] = {
 136         REGULATOR_LINEAR_RANGE(600000, 0x00, 0x70, 25000),
 137         REGULATOR_LINEAR_RANGE(3400000, 0x71, 0x7F, 0),
 138 };
 139
 140 /*
 141  * LDO1
 142  * 1.6 to 3.3V ()
 143  */
 144 static const struct linear_range pca9450_ldo1_volts[] = {
 145         REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000),
 146         REGULATOR_LINEAR_RANGE(3000000, 0x04, 0x07, 100000),
 147 };
 148
 149 /*
 150  * LDO2
 151  * 0.8 to 1.15V (50mV step)
 152  */
 153 static const struct linear_range pca9450_ldo2_volts[] = {
 154         REGULATOR_LINEAR_RANGE(800000, 0x00, 0x07, 50000),
 155 };
 156
 157 /*
 158  * LDO3/4
 159  * 0.8 to 3.3V (100mV step)
 160  */
 161 static const struct linear_range pca9450_ldo34_volts[] = {
 162         REGULATOR_LINEAR_RANGE(800000, 0x00, 0x19, 100000),
 163         REGULATOR_LINEAR_RANGE(3300000, 0x1A, 0x1F, 0),
 164 };
 165
 166 /*
 167  * LDO5
 168  * 1.8 to 3.3V (100mV step)
 169  */
 170 static const struct linear_range pca9450_ldo5_volts[] = {
 171         REGULATOR_LINEAR_RANGE(1800000,  0x00, 0x0F, 100000),
 172 };
 173
 174 static int buck_set_dvs(const struct regulator_desc *desc,
 175                         struct device_node *np, struct regmap *regmap,
 176                         char *prop, unsigned int reg, unsigned int mask)
 177 {
 178         int ret, i;
 179         uint32_t uv;
 180
 181         ret = of_property_read_u32(np, prop, &uv);
 182         if (ret == -EINVAL)
 183                 return 0;
 184         else if (ret)
 185                 return ret;
 186
 187         for (i = 0; i < desc->n_voltages; i++) {
 188                 ret = regulator_desc_list_voltage_linear_range(desc, i);
 189                 if (ret < 0)
 190                         continue;
 191                 if (ret == uv) {
 192                         i <<= ffs(desc->vsel_mask) - 1;
 193                         ret = regmap_update_bits(regmap, reg, mask, i);
 194                         break;
 195                 }
 196         }
 197
 198         return ret;
 199 }
 200
 201 static int pca9450_set_dvs_levels(struct device_node *np,
 202                             const struct regulator_desc *desc,
 203                             struct regulator_config *cfg)
 204 {
 205         struct pca9450_regulator_desc *data = container_of(desc,
 206                                         struct pca9450_regulator_desc, desc);
 207         const struct pc9450_dvs_config *dvs = &data->dvs;
 208         unsigned int reg, mask;
 209         char *prop;
 210         int i, ret = 0;
 211
 212         for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) {
 213                 switch (i) {
 214                 case PCA9450_DVS_LEVEL_RUN:
 215                         prop = "nxp,dvs-run-voltage";
 216                         reg = dvs->run_reg;
 217                         mask = dvs->run_mask;
 218                         break;
 219                 case PCA9450_DVS_LEVEL_STANDBY:
 220                         prop = "nxp,dvs-standby-voltage";
 221                         reg = dvs->standby_reg;
 222                         mask = dvs->standby_mask;
 223                         break;
 224                 default:
 225                         return -EINVAL;
 226                 }
 227
 228                 ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask);
 229                 if (ret)
 230                         break;
 231         }
 232
 233         return ret;
 234 }
 235
 236 static const struct pca9450_regulator_desc pca9450a_regulators[] = {
 237         {
 238                 .desc = {
 239                         .name = "buck1",
 240                         .of_match = of_match_ptr("BUCK1"),
 241                         .regulators_node = of_match_ptr("regulators"),
 242                         .id = PCA9450_BUCK1,
 243                         .ops = &pca9450_dvs_buck_regulator_ops,
 244                         .type = REGULATOR_VOLTAGE,
 245                         .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
 246                         .linear_ranges = pca9450_dvs_buck_volts,
 247                         .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
 248                         .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
 249                         .vsel_mask = BUCK1OUT_DVS0_MASK,
 250                         .enable_reg = PCA9450_REG_BUCK1CTRL,
 251                         .enable_mask = BUCK1_ENMODE_MASK,
 252                         .owner = THIS_MODULE,
 253                         .of_parse_cb = pca9450_set_dvs_levels,
 254                 },
 255                 .dvs = {
 256                         .run_reg = PCA9450_REG_BUCK1OUT_DVS0,
 257                         .run_mask = BUCK1OUT_DVS0_MASK,
 258                         .standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
 259                         .standby_mask = BUCK1OUT_DVS1_MASK,
 260                 },
 261         },
 262         {
 263                 .desc = {
 264                         .name = "buck2",
 265                         .of_match = of_match_ptr("BUCK2"),
 266                         .regulators_node = of_match_ptr("regulators"),
 267                         .id = PCA9450_BUCK2,
 268                         .ops = &pca9450_dvs_buck_regulator_ops,
 269                         .type = REGULATOR_VOLTAGE,
 270                         .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
 271                         .linear_ranges = pca9450_dvs_buck_volts,
 272                         .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
 273                         .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
 274                         .vsel_mask = BUCK2OUT_DVS0_MASK,
 275                         .enable_reg = PCA9450_REG_BUCK2CTRL,
 276                         .enable_mask = BUCK1_ENMODE_MASK,
 277                         .owner = THIS_MODULE,
 278                         .of_parse_cb = pca9450_set_dvs_levels,
 279                 },
 280                 .dvs = {
 281                         .run_reg = PCA9450_REG_BUCK2OUT_DVS0,
 282                         .run_mask = BUCK2OUT_DVS0_MASK,
 283                         .standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
 284                         .standby_mask = BUCK2OUT_DVS1_MASK,
 285                 },
 286         },
 287         {
 288                 .desc = {
 289                         .name = "buck3",
 290                         .of_match = of_match_ptr("BUCK3"),
 291                         .regulators_node = of_match_ptr("regulators"),
 292                         .id = PCA9450_BUCK3,
 293                         .ops = &pca9450_dvs_buck_regulator_ops,
 294                         .type = REGULATOR_VOLTAGE,
 295                         .n_voltages = PCA9450_BUCK3_VOLTAGE_NUM,
 296                         .linear_ranges = pca9450_dvs_buck_volts,
 297                         .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
 298                         .vsel_reg = PCA9450_REG_BUCK3OUT_DVS0,
 299                         .vsel_mask = BUCK3OUT_DVS0_MASK,
 300                         .enable_reg = PCA9450_REG_BUCK3CTRL,
 301                         .enable_mask = BUCK3_ENMODE_MASK,
 302                         .owner = THIS_MODULE,
 303                         .of_parse_cb = pca9450_set_dvs_levels,
 304                 },
 305                 .dvs = {
 306                         .run_reg = PCA9450_REG_BUCK3OUT_DVS0,
 307                         .run_mask = BUCK3OUT_DVS0_MASK,
 308                         .standby_reg = PCA9450_REG_BUCK3OUT_DVS1,
 309                         .standby_mask = BUCK3OUT_DVS1_MASK,
 310                 },
 311         },
 312         {
 313                 .desc = {
 314                         .name = "buck4",
 315                         .of_match = of_match_ptr("BUCK4"),
 316                         .regulators_node = of_match_ptr("regulators"),
 317                         .id = PCA9450_BUCK4,
 318                         .ops = &pca9450_buck_regulator_ops,
 319                         .type = REGULATOR_VOLTAGE,
 320                         .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
 321                         .linear_ranges = pca9450_buck_volts,
 322                         .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
 323                         .vsel_reg = PCA9450_REG_BUCK4OUT,
 324                         .vsel_mask = BUCK4OUT_MASK,
 325                         .enable_reg = PCA9450_REG_BUCK4CTRL,
 326                         .enable_mask = BUCK4_ENMODE_MASK,
 327                         .owner = THIS_MODULE,
 328                 },
 329         },
 330         {
 331                 .desc = {
 332                         .name = "buck5",
 333                         .of_match = of_match_ptr("BUCK5"),
 334                         .regulators_node = of_match_ptr("regulators"),
 335                         .id = PCA9450_BUCK5,
 336                         .ops = &pca9450_buck_regulator_ops,
 337                         .type = REGULATOR_VOLTAGE,
 338                         .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
 339                         .linear_ranges = pca9450_buck_volts,
 340                         .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
 341                         .vsel_reg = PCA9450_REG_BUCK5OUT,
 342                         .vsel_mask = BUCK5OUT_MASK,
 343                         .enable_reg = PCA9450_REG_BUCK5CTRL,
 344                         .enable_mask = BUCK5_ENMODE_MASK,
 345                         .owner = THIS_MODULE,
 346                 },
 347         },
 348         {
 349                 .desc = {
 350                         .name = "buck6",
 351                         .of_match = of_match_ptr("BUCK6"),
 352                         .regulators_node = of_match_ptr("regulators"),
 353                         .id = PCA9450_BUCK6,
 354                         .ops = &pca9450_buck_regulator_ops,
 355                         .type = REGULATOR_VOLTAGE,
 356                         .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
 357                         .linear_ranges = pca9450_buck_volts,
 358                         .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
 359                         .vsel_reg = PCA9450_REG_BUCK6OUT,
 360                         .vsel_mask = BUCK6OUT_MASK,
 361                         .enable_reg = PCA9450_REG_BUCK6CTRL,
 362                         .enable_mask = BUCK6_ENMODE_MASK,
 363                         .owner = THIS_MODULE,
 364                 },
 365         },
 366         {
 367                 .desc = {
 368                         .name = "ldo1",
 369                         .of_match = of_match_ptr("LDO1"),
 370                         .regulators_node = of_match_ptr("regulators"),
 371                         .id = PCA9450_LDO1,
 372                         .ops = &pca9450_ldo_regulator_ops,
 373                         .type = REGULATOR_VOLTAGE,
 374                         .n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
 375                         .linear_ranges = pca9450_ldo1_volts,
 376                         .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
 377                         .vsel_reg = PCA9450_REG_LDO1CTRL,
 378                         .vsel_mask = LDO1OUT_MASK,
 379                         .enable_reg = PCA9450_REG_LDO1CTRL,
 380                         .enable_mask = LDO1_EN_MASK,
 381                         .owner = THIS_MODULE,
 382                 },
 383         },
 384         {
 385                 .desc = {
 386                         .name = "ldo2",
 387                         .of_match = of_match_ptr("LDO2"),
 388                         .regulators_node = of_match_ptr("regulators"),
 389                         .id = PCA9450_LDO2,
 390                         .ops = &pca9450_ldo_regulator_ops,
 391                         .type = REGULATOR_VOLTAGE,
 392                         .n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
 393                         .linear_ranges = pca9450_ldo2_volts,
 394                         .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts),
 395                         .vsel_reg = PCA9450_REG_LDO2CTRL,
 396                         .vsel_mask = LDO2OUT_MASK,
 397                         .enable_reg = PCA9450_REG_LDO2CTRL,
 398                         .enable_mask = LDO2_EN_MASK,
 399                         .owner = THIS_MODULE,
 400                 },
 401         },
 402         {
 403                 .desc = {
 404                         .name = "ldo3",
 405                         .of_match = of_match_ptr("LDO3"),
 406                         .regulators_node = of_match_ptr("regulators"),
 407                         .id = PCA9450_LDO3,
 408                         .ops = &pca9450_ldo_regulator_ops,
 409                         .type = REGULATOR_VOLTAGE,
 410                         .n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
 411                         .linear_ranges = pca9450_ldo34_volts,
 412                         .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
 413                         .vsel_reg = PCA9450_REG_LDO3CTRL,
 414                         .vsel_mask = LDO3OUT_MASK,
 415                         .enable_reg = PCA9450_REG_LDO3CTRL,
 416                         .enable_mask = LDO3_EN_MASK,
 417                         .owner = THIS_MODULE,
 418                 },
 419         },
 420         {
 421                 .desc = {
 422                         .name = "ldo4",
 423                         .of_match = of_match_ptr("LDO4"),
 424                         .regulators_node = of_match_ptr("regulators"),
 425                         .id = PCA9450_LDO4,
 426                         .ops = &pca9450_ldo_regulator_ops,
 427                         .type = REGULATOR_VOLTAGE,
 428                         .n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
 429                         .linear_ranges = pca9450_ldo34_volts,
 430                         .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
 431                         .vsel_reg = PCA9450_REG_LDO4CTRL,
 432                         .vsel_mask = LDO4OUT_MASK,
 433                         .enable_reg = PCA9450_REG_LDO4CTRL,
 434                         .enable_mask = LDO4_EN_MASK,
 435                         .owner = THIS_MODULE,
 436                 },
 437         },
 438         {
 439                 .desc = {
 440                         .name = "ldo5",
 441                         .of_match = of_match_ptr("LDO5"),
 442                         .regulators_node = of_match_ptr("regulators"),
 443                         .id = PCA9450_LDO5,
 444                         .ops = &pca9450_ldo_regulator_ops,
 445                         .type = REGULATOR_VOLTAGE,
 446                         .n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
 447                         .linear_ranges = pca9450_ldo5_volts,
 448                         .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
 449                         .vsel_reg = PCA9450_REG_LDO5CTRL_H,
 450                         .vsel_mask = LDO5HOUT_MASK,
 451                         .enable_reg = PCA9450_REG_LDO5CTRL_H,
 452                         .enable_mask = LDO5H_EN_MASK,
 453                         .owner = THIS_MODULE,
 454                 },
 455         },
 456 };
 457
 458 /*
 459  * Buck3 removed on PCA9450B and connected with Buck1 internal for dual phase
 460  * on PCA9450C as no Buck3.
 461  */
 462 static const struct pca9450_regulator_desc pca9450bc_regulators[] = {
 463         {
 464                 .desc = {
 465                         .name = "buck1",
 466                         .of_match = of_match_ptr("BUCK1"),
 467                         .regulators_node = of_match_ptr("regulators"),
 468                         .id = PCA9450_BUCK1,
 469                         .ops = &pca9450_dvs_buck_regulator_ops,
 470                         .type = REGULATOR_VOLTAGE,
 471                         .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
 472                         .linear_ranges = pca9450_dvs_buck_volts,
 473                         .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
 474                         .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
 475                         .vsel_mask = BUCK1OUT_DVS0_MASK,
 476                         .enable_reg = PCA9450_REG_BUCK1CTRL,
 477                         .enable_mask = BUCK1_ENMODE_MASK,
 478                         .owner = THIS_MODULE,
 479                         .of_parse_cb = pca9450_set_dvs_levels,
 480                 },
 481                 .dvs = {
 482                         .run_reg = PCA9450_REG_BUCK1OUT_DVS0,
 483                         .run_mask = BUCK1OUT_DVS0_MASK,
 484                         .standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
 485                         .standby_mask = BUCK1OUT_DVS1_MASK,
 486                 },
 487         },
 488         {
 489                 .desc = {
 490                         .name = "buck2",
 491                         .of_match = of_match_ptr("BUCK2"),
 492                         .regulators_node = of_match_ptr("regulators"),
 493                         .id = PCA9450_BUCK2,
 494                         .ops = &pca9450_dvs_buck_regulator_ops,
 495                         .type = REGULATOR_VOLTAGE,
 496                         .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
 497                         .linear_ranges = pca9450_dvs_buck_volts,
 498                         .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
 499                         .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
 500                         .vsel_mask = BUCK2OUT_DVS0_MASK,
 501                         .enable_reg = PCA9450_REG_BUCK2CTRL,
 502                         .enable_mask = BUCK1_ENMODE_MASK,
 503                         .owner = THIS_MODULE,
 504                         .of_parse_cb = pca9450_set_dvs_levels,
 505                 },
 506                 .dvs = {
 507                         .run_reg = PCA9450_REG_BUCK2OUT_DVS0,
 508                         .run_mask = BUCK2OUT_DVS0_MASK,
 509                         .standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
 510                         .standby_mask = BUCK2OUT_DVS1_MASK,
 511                 },
 512         },
 513         {
 514                 .desc = {
 515                         .name = "buck4",
 516                         .of_match = of_match_ptr("BUCK4"),
 517                         .regulators_node = of_match_ptr("regulators"),
 518                         .id = PCA9450_BUCK4,
 519                         .ops = &pca9450_buck_regulator_ops,
 520                         .type = REGULATOR_VOLTAGE,
 521                         .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
 522                         .linear_ranges = pca9450_buck_volts,
 523                         .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
 524                         .vsel_reg = PCA9450_REG_BUCK4OUT,
 525                         .vsel_mask = BUCK4OUT_MASK,
 526                         .enable_reg = PCA9450_REG_BUCK4CTRL,
 527                         .enable_mask = BUCK4_ENMODE_MASK,
 528                         .owner = THIS_MODULE,
 529                 },
 530         },
 531         {
 532                 .desc = {
 533                         .name = "buck5",
 534                         .of_match = of_match_ptr("BUCK5"),
 535                         .regulators_node = of_match_ptr("regulators"),
 536                         .id = PCA9450_BUCK5,
 537                         .ops = &pca9450_buck_regulator_ops,
 538                         .type = REGULATOR_VOLTAGE,
 539                         .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
 540                         .linear_ranges = pca9450_buck_volts,
 541                         .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
 542                         .vsel_reg = PCA9450_REG_BUCK5OUT,
 543                         .vsel_mask = BUCK5OUT_MASK,
 544                         .enable_reg = PCA9450_REG_BUCK5CTRL,
 545                         .enable_mask = BUCK5_ENMODE_MASK,
 546                         .owner = THIS_MODULE,
 547                 },
 548         },
 549         {
 550                 .desc = {
 551                         .name = "buck6",
 552                         .of_match = of_match_ptr("BUCK6"),
 553                         .regulators_node = of_match_ptr("regulators"),
 554                         .id = PCA9450_BUCK6,
 555                         .ops = &pca9450_buck_regulator_ops,
 556                         .type = REGULATOR_VOLTAGE,
 557                         .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
 558                         .linear_ranges = pca9450_buck_volts,
 559                         .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
 560                         .vsel_reg = PCA9450_REG_BUCK6OUT,
 561                         .vsel_mask = BUCK6OUT_MASK,
 562                         .enable_reg = PCA9450_REG_BUCK6CTRL,
 563                         .enable_mask = BUCK6_ENMODE_MASK,
 564                         .owner = THIS_MODULE,
 565                 },
 566         },
 567         {
 568                 .desc = {
 569                         .name = "ldo1",
 570                         .of_match = of_match_ptr("LDO1"),
 571                         .regulators_node = of_match_ptr("regulators"),
 572                         .id = PCA9450_LDO1,
 573                         .ops = &pca9450_ldo_regulator_ops,
 574                         .type = REGULATOR_VOLTAGE,
 575                         .n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
 576                         .linear_ranges = pca9450_ldo1_volts,
 577                         .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
 578                         .vsel_reg = PCA9450_REG_LDO1CTRL,
 579                         .vsel_mask = LDO1OUT_MASK,
 580                         .enable_reg = PCA9450_REG_LDO1CTRL,
 581                         .enable_mask = LDO1_EN_MASK,
 582                         .owner = THIS_MODULE,
 583                 },
 584         },
 585         {
 586                 .desc = {
 587                         .name = "ldo2",
 588                         .of_match = of_match_ptr("LDO2"),
 589                         .regulators_node = of_match_ptr("regulators"),
 590                         .id = PCA9450_LDO2,
 591                         .ops = &pca9450_ldo_regulator_ops,
 592                         .type = REGULATOR_VOLTAGE,
 593                         .n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
 594                         .linear_ranges = pca9450_ldo2_volts,
 595                         .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts),
 596                         .vsel_reg = PCA9450_REG_LDO2CTRL,
 597                         .vsel_mask = LDO2OUT_MASK,
 598                         .enable_reg = PCA9450_REG_LDO2CTRL,
 599                         .enable_mask = LDO2_EN_MASK,
 600                         .owner = THIS_MODULE,
 601                 },
 602         },
 603         {
 604                 .desc = {
 605                         .name = "ldo3",
 606                         .of_match = of_match_ptr("LDO3"),
 607                         .regulators_node = of_match_ptr("regulators"),
 608                         .id = PCA9450_LDO3,
 609                         .ops = &pca9450_ldo_regulator_ops,
 610                         .type = REGULATOR_VOLTAGE,
 611                         .n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
 612                         .linear_ranges = pca9450_ldo34_volts,
 613                         .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
 614                         .vsel_reg = PCA9450_REG_LDO3CTRL,
 615                         .vsel_mask = LDO3OUT_MASK,
 616                         .enable_reg = PCA9450_REG_LDO3CTRL,
 617                         .enable_mask = LDO3_EN_MASK,
 618                         .owner = THIS_MODULE,
 619                 },
 620         },
 621         {
 622                 .desc = {
 623                         .name = "ldo4",
 624                         .of_match = of_match_ptr("LDO4"),
 625                         .regulators_node = of_match_ptr("regulators"),
 626                         .id = PCA9450_LDO4,
 627                         .ops = &pca9450_ldo_regulator_ops,
 628                         .type = REGULATOR_VOLTAGE,
 629                         .n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
 630                         .linear_ranges = pca9450_ldo34_volts,
 631                         .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
 632                         .vsel_reg = PCA9450_REG_LDO4CTRL,
 633                         .vsel_mask = LDO4OUT_MASK,
 634                         .enable_reg = PCA9450_REG_LDO4CTRL,
 635                         .enable_mask = LDO4_EN_MASK,
 636                         .owner = THIS_MODULE,
 637                 },
 638         },
 639         {
 640                 .desc = {
 641                         .name = "ldo5",
 642                         .of_match = of_match_ptr("LDO5"),
 643                         .regulators_node = of_match_ptr("regulators"),
 644                         .id = PCA9450_LDO5,
 645                         .ops = &pca9450_ldo_regulator_ops,
 646                         .type = REGULATOR_VOLTAGE,
 647                         .n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
 648                         .linear_ranges = pca9450_ldo5_volts,
 649                         .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
 650                         .vsel_reg = PCA9450_REG_LDO5CTRL_H,
 651                         .vsel_mask = LDO5HOUT_MASK,
 652                         .enable_reg = PCA9450_REG_LDO5CTRL_H,
 653                         .enable_mask = LDO5H_EN_MASK,
 654                         .owner = THIS_MODULE,
 655                 },
 656         },
 657 };
 658
 659 static irqreturn_t pca9450_irq_handler(int irq, void *data)
 660 {
 661         struct pca9450 *pca9450 = data;
 662         struct regmap *regmap = pca9450->regmap;
 663         unsigned int status;
 664         int ret;
 665
 666         ret = regmap_read(regmap, PCA9450_REG_INT1, &status);
 667         if (ret < 0) {
 668                 dev_err(pca9450->dev,
 669                         "Failed to read INT1(%d)\n", ret);
 670                 return IRQ_NONE;
 671         }
 672
 673         if (status & IRQ_PWRON)
 674                 dev_warn(pca9450->dev, "PWRON interrupt.\n");
 675
 676         if (status & IRQ_WDOGB)
 677                 dev_warn(pca9450->dev, "WDOGB interrupt.\n");
 678
 679         if (status & IRQ_VR_FLT1)
 680                 dev_warn(pca9450->dev, "VRFLT1 interrupt.\n");
 681
 682         if (status & IRQ_VR_FLT2)
 683                 dev_warn(pca9450->dev, "VRFLT2 interrupt.\n");
 684
 685         if (status & IRQ_LOWVSYS)
 686                 dev_warn(pca9450->dev, "LOWVSYS interrupt.\n");
 687
 688         if (status & IRQ_THERM_105)
 689                 dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n");
 690
 691         if (status & IRQ_THERM_125)
 692                 dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n");
 693
 694         return IRQ_HANDLED;
 695 }
 696
 697 static int pca9450_i2c_probe(struct i2c_client *i2c,
 698                              const struct i2c_device_id *id)
 699 {
 700         enum pca9450_chip_type type = (unsigned int)(uintptr_t)
 701                                       of_device_get_match_data(&i2c->dev);
 702         const struct pca9450_regulator_desc     *regulator_desc;
 703         struct regulator_config config = { };
 704         struct pca9450 *pca9450;
 705         unsigned int device_id, i;
 706         int ret;
 707
 708         if (!i2c->irq) {
 709                 dev_err(&i2c->dev, "No IRQ configured?\n");
 710                 return -EINVAL;
 711         }
 712
 713         pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL);
 714         if (!pca9450)
 715                 return -ENOMEM;
 716
 717         switch (type) {
 718         case PCA9450_TYPE_PCA9450A:
 719                 regulator_desc = pca9450a_regulators;
 720                 pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators);
 721                 break;
 722         case PCA9450_TYPE_PCA9450BC:
 723                 regulator_desc = pca9450bc_regulators;
 724                 pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators);
 725                 break;
 726         default:
 727                 dev_err(&i2c->dev, "Unknown device type");
 728                 return -EINVAL;
 729         }
 730
 731         pca9450->irq = i2c->irq;
 732         pca9450->type = type;
 733         pca9450->dev = &i2c->dev;
 734
 735         dev_set_drvdata(&i2c->dev, pca9450);
 736
 737         pca9450->regmap = devm_regmap_init_i2c(i2c,
 738                                                &pca9450_regmap_config);
 739         if (IS_ERR(pca9450->regmap)) {
 740                 dev_err(&i2c->dev, "regmap initialization failed\n");
 741                 return PTR_ERR(pca9450->regmap);
 742         }
 743
 744         ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id);
 745         if (ret) {
 746                 dev_err(&i2c->dev, "Read device id error\n");
 747                 return ret;
 748         }
 749
 750         /* Check your board and dts for match the right pmic */
 751         if (((device_id >> 4) != 0x1 && type == PCA9450_TYPE_PCA9450A) ||
 752             ((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC)) {
 753                 dev_err(&i2c->dev, "Device id(%x) mismatched\n",
 754                         device_id >> 4);
 755                 return -EINVAL;
 756         }
 757
 758         for (i = 0; i < pca9450->rcnt; i++) {
 759                 const struct regulator_desc *desc;
 760                 struct regulator_dev *rdev;
 761                 const struct pca9450_regulator_desc *r;
 762
 763                 r = &regulator_desc[i];
 764                 desc = &r->desc;
 765
 766                 config.regmap = pca9450->regmap;
 767                 config.dev = pca9450->dev;
 768
 769                 rdev = devm_regulator_register(pca9450->dev, desc, &config);
 770                 if (IS_ERR(rdev)) {
 771                         ret = PTR_ERR(rdev);
 772                         dev_err(pca9450->dev,
 773                                 "Failed to register regulator(%s): %d\n",
 774                                 desc->name, ret);
 775                         return ret;
 776                 }
 777         }
 778
 779         ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL,
 780                                         pca9450_irq_handler,
 781                                         (IRQF_TRIGGER_FALLING | IRQF_ONESHOT),
 782                                         "pca9450-irq", pca9450);
 783         if (ret != 0) {
 784                 dev_err(pca9450->dev, "Failed to request IRQ: %d\n",
 785                         pca9450->irq);
 786                 return ret;
 787         }
 788         /* Unmask all interrupt except PWRON/WDOG/RSVD */
 789         ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK,
 790                                 IRQ_VR_FLT1 | IRQ_VR_FLT2 | IRQ_LOWVSYS |
 791                                 IRQ_THERM_105 | IRQ_THERM_125,
 792                                 IRQ_PWRON | IRQ_WDOGB | IRQ_RSVD);
 793         if (ret) {
 794                 dev_err(&i2c->dev, "Unmask irq error\n");
 795                 return ret;
 796         }
 797
 798         dev_info(&i2c->dev, "%s probed.\n",
 799                 type == PCA9450_TYPE_PCA9450A ? "pca9450a" : "pca9450bc");
 800
 801         return 0;
 802 }
 803
 804 static const struct of_device_id pca9450_of_match[] = {
 805         {
 806                 .compatible = "nxp,pca9450a",
 807                 .data = (void *)PCA9450_TYPE_PCA9450A,
 808         },
 809         {
 810                 .compatible = "nxp,pca9450b",
 811                 .data = (void *)PCA9450_TYPE_PCA9450BC,
 812         },
 813         {
 814                 .compatible = "nxp,pca9450c",
 815                 .data = (void *)PCA9450_TYPE_PCA9450BC,
 816         },
 817         { }
 818 };
 819 MODULE_DEVICE_TABLE(of, pca9450_of_match);
 820
 821 static struct i2c_driver pca9450_i2c_driver = {
 822         .driver = {
 823                 .name = "nxp-pca9450",
 824                 .of_match_table = pca9450_of_match,
 825         },
 826         .probe = pca9450_i2c_probe,
 827 };
 828
 829 module_i2c_driver(pca9450_i2c_driver);
 830
 831 MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>");
 832 MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver");
 833 MODULE_LICENSE("GPL");