drivers/regulator/twl6030-regulator.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Split TWL6030 logic from twl-regulator.c:
   4  * Copyright (C) 2008 David Brownell
   5  *
   6  * Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com>
   7  */
   8
   9 #include <linux/module.h>
  10 #include <linux/string.h>
  11 #include <linux/slab.h>
  12 #include <linux/init.h>
  13 #include <linux/err.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/of.h>
  16 #include <linux/of_device.h>
  17 #include <linux/regulator/driver.h>
  18 #include <linux/regulator/machine.h>
  19 #include <linux/regulator/of_regulator.h>
  20 #include <linux/mfd/twl.h>
  21 #include <linux/delay.h>
  22
  23 struct twlreg_info {
  24         /* start of regulator's PM_RECEIVER control register bank */
  25         u8                      base;
  26
  27         /* twl resource ID, for resource control state machine */
  28         u8                      id;
  29
  30         u8                      flags;
  31
  32         /* used by regulator core */
  33         struct regulator_desc   desc;
  34
  35         /* chip specific features */
  36         unsigned long           features;
  37
  38         /* data passed from board for external get/set voltage */
  39         void                    *data;
  40 };
  41
  42
  43 /* LDO control registers ... offset is from the base of its register bank.
  44  * The first three registers of all power resource banks help hardware to
  45  * manage the various resource groups.
  46  */
  47 /* Common offset in TWL4030/6030 */
  48 #define VREG_GRP                0
  49 /* TWL6030 register offsets */
  50 #define VREG_TRANS              1
  51 #define VREG_STATE              2
  52 #define VREG_VOLTAGE            3
  53 #define VREG_VOLTAGE_SMPS       4
  54 /* TWL6030 Misc register offsets */
  55 #define VREG_BC_ALL             1
  56 #define VREG_BC_REF             2
  57 #define VREG_BC_PROC            3
  58 #define VREG_BC_CLK_RST         4
  59
  60 /* TWL6030 LDO register values for CFG_STATE */
  61 #define TWL6030_CFG_STATE_OFF   0x00
  62 #define TWL6030_CFG_STATE_ON    0x01
  63 #define TWL6030_CFG_STATE_OFF2  0x02
  64 #define TWL6030_CFG_STATE_SLEEP 0x03
  65 #define TWL6030_CFG_STATE_GRP_SHIFT     5
  66 #define TWL6030_CFG_STATE_APP_SHIFT     2
  67 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
  68 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
  69                                                 TWL6030_CFG_STATE_APP_SHIFT)
  70
  71 /* Flags for SMPS Voltage reading */
  72 #define SMPS_OFFSET_EN          BIT(0)
  73 #define SMPS_EXTENDED_EN        BIT(1)
  74
  75 /* twl6032 SMPS EPROM values */
  76 #define TWL6030_SMPS_OFFSET             0xB0
  77 #define TWL6030_SMPS_MULT               0xB3
  78 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
  79 #define SMPS_MULTOFFSET_VIO     BIT(1)
  80 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
  81
  82 static inline int
  83 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
  84 {
  85         u8 value;
  86         int status;
  87
  88         status = twl_i2c_read_u8(slave_subgp,
  89                         &value, info->base + offset);
  90         return (status < 0) ? status : value;
  91 }
  92
  93 static inline int
  94 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
  95                                                  u8 value)
  96 {
  97         return twl_i2c_write_u8(slave_subgp,
  98                         value, info->base + offset);
  99 }
 100
 101 /* generic power resource operations, which work on all regulators */
 102 static int twlreg_grp(struct regulator_dev *rdev)
 103 {
 104         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
 105                                                                  VREG_GRP);
 106 }
 107
 108 /*
 109  * Enable/disable regulators by joining/leaving the P1 (processor) group.
 110  * We assume nobody else is updating the DEV_GRP registers.
 111  */
 112 /* definition for 6030 family */
 113 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
 114 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
 115 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
 116
 117 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
 118 {
 119         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 120         int                     grp = 0, val;
 121
 122         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
 123                 grp = twlreg_grp(rdev);
 124                 if (grp < 0)
 125                         return grp;
 126                 grp &= P1_GRP_6030;
 127         } else {
 128                 grp = 1;
 129         }
 130
 131         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 132         val = TWL6030_CFG_STATE_APP(val);
 133
 134         return grp && (val == TWL6030_CFG_STATE_ON);
 135 }
 136
 137 #define PB_I2C_BUSY     BIT(0)
 138 #define PB_I2C_BWEN     BIT(1)
 139
 140
 141 static int twl6030reg_enable(struct regulator_dev *rdev)
 142 {
 143         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 144         int                     grp = 0;
 145         int                     ret;
 146
 147         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 148                 grp = twlreg_grp(rdev);
 149         if (grp < 0)
 150                 return grp;
 151
 152         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 153                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
 154                         TWL6030_CFG_STATE_ON);
 155         return ret;
 156 }
 157
 158 static int twl6030reg_disable(struct regulator_dev *rdev)
 159 {
 160         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 161         int                     grp = 0;
 162         int                     ret;
 163
 164         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 165                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
 166
 167         /* For 6030, set the off state for all grps enabled */
 168         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 169                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
 170                         TWL6030_CFG_STATE_OFF);
 171
 172         return ret;
 173 }
 174
 175 static int twl6030reg_get_status(struct regulator_dev *rdev)
 176 {
 177         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 178         int                     val;
 179
 180         val = twlreg_grp(rdev);
 181         if (val < 0)
 182                 return val;
 183
 184         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 185
 186         switch (TWL6030_CFG_STATE_APP(val)) {
 187         case TWL6030_CFG_STATE_ON:
 188                 return REGULATOR_STATUS_NORMAL;
 189
 190         case TWL6030_CFG_STATE_SLEEP:
 191                 return REGULATOR_STATUS_STANDBY;
 192
 193         case TWL6030_CFG_STATE_OFF:
 194         case TWL6030_CFG_STATE_OFF2:
 195         default:
 196                 break;
 197         }
 198
 199         return REGULATOR_STATUS_OFF;
 200 }
 201
 202 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 203 {
 204         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 205         int grp = 0;
 206         int val;
 207
 208         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 209                 grp = twlreg_grp(rdev);
 210
 211         if (grp < 0)
 212                 return grp;
 213
 214         /* Compose the state register settings */
 215         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
 216         /* We can only set the mode through state machine commands... */
 217         switch (mode) {
 218         case REGULATOR_MODE_NORMAL:
 219                 val |= TWL6030_CFG_STATE_ON;
 220                 break;
 221         case REGULATOR_MODE_STANDBY:
 222                 val |= TWL6030_CFG_STATE_SLEEP;
 223                 break;
 224
 225         default:
 226                 return -EINVAL;
 227         }
 228
 229         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
 230 }
 231
 232 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
 233         int max_uV, unsigned *selector)
 234 {
 235         return -ENODEV;
 236 }
 237
 238 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
 239 {
 240         return -ENODEV;
 241 }
 242
 243 static const struct regulator_ops twl6030coresmps_ops = {
 244         .set_voltage    = twl6030coresmps_set_voltage,
 245         .get_voltage    = twl6030coresmps_get_voltage,
 246 };
 247
 248 static int
 249 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 250 {
 251         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 252
 253         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
 254                             selector);
 255 }
 256
 257 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
 258 {
 259         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 260         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
 261
 262         return vsel;
 263 }
 264
 265 static const struct regulator_ops twl6030ldo_ops = {
 266         .list_voltage   = regulator_list_voltage_linear_range,
 267
 268         .set_voltage_sel = twl6030ldo_set_voltage_sel,
 269         .get_voltage_sel = twl6030ldo_get_voltage_sel,
 270
 271         .enable         = twl6030reg_enable,
 272         .disable        = twl6030reg_disable,
 273         .is_enabled     = twl6030reg_is_enabled,
 274
 275         .set_mode       = twl6030reg_set_mode,
 276
 277         .get_status     = twl6030reg_get_status,
 278 };
 279
 280 static const struct regulator_ops twl6030fixed_ops = {
 281         .list_voltage   = regulator_list_voltage_linear,
 282
 283         .enable         = twl6030reg_enable,
 284         .disable        = twl6030reg_disable,
 285         .is_enabled     = twl6030reg_is_enabled,
 286
 287         .set_mode       = twl6030reg_set_mode,
 288
 289         .get_status     = twl6030reg_get_status,
 290 };
 291
 292 /*
 293  * SMPS status and control
 294  */
 295
 296 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
 297 {
 298         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 299
 300         int voltage = 0;
 301
 302         switch (info->flags) {
 303         case SMPS_OFFSET_EN:
 304                 voltage = 100000;
 305                 /* fall through */
 306         case 0:
 307                 switch (index) {
 308                 case 0:
 309                         voltage = 0;
 310                         break;
 311                 case 58:
 312                         voltage = 1350 * 1000;
 313                         break;
 314                 case 59:
 315                         voltage = 1500 * 1000;
 316                         break;
 317                 case 60:
 318                         voltage = 1800 * 1000;
 319                         break;
 320                 case 61:
 321                         voltage = 1900 * 1000;
 322                         break;
 323                 case 62:
 324                         voltage = 2100 * 1000;
 325                         break;
 326                 default:
 327                         voltage += (600000 + (12500 * (index - 1)));
 328                 }
 329                 break;
 330         case SMPS_EXTENDED_EN:
 331                 switch (index) {
 332                 case 0:
 333                         voltage = 0;
 334                         break;
 335                 case 58:
 336                         voltage = 2084 * 1000;
 337                         break;
 338                 case 59:
 339                         voltage = 2315 * 1000;
 340                         break;
 341                 case 60:
 342                         voltage = 2778 * 1000;
 343                         break;
 344                 case 61:
 345                         voltage = 2932 * 1000;
 346                         break;
 347                 case 62:
 348                         voltage = 3241 * 1000;
 349                         break;
 350                 default:
 351                         voltage = (1852000 + (38600 * (index - 1)));
 352                 }
 353                 break;
 354         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
 355                 switch (index) {
 356                 case 0:
 357                         voltage = 0;
 358                         break;
 359                 case 58:
 360                         voltage = 4167 * 1000;
 361                         break;
 362                 case 59:
 363                         voltage = 2315 * 1000;
 364                         break;
 365                 case 60:
 366                         voltage = 2778 * 1000;
 367                         break;
 368                 case 61:
 369                         voltage = 2932 * 1000;
 370                         break;
 371                 case 62:
 372                         voltage = 3241 * 1000;
 373                         break;
 374                 default:
 375                         voltage = (2161000 + (38600 * (index - 1)));
 376                 }
 377                 break;
 378         }
 379
 380         return voltage;
 381 }
 382
 383 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
 384                                    int max_uV)
 385 {
 386         struct twlreg_info *info = rdev_get_drvdata(rdev);
 387         int vsel = 0;
 388
 389         switch (info->flags) {
 390         case 0:
 391                 if (min_uV == 0)
 392                         vsel = 0;
 393                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
 394                         vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 395                         vsel++;
 396                 }
 397                 /* Values 1..57 for vsel are linear and can be calculated
 398                  * values 58..62 are non linear.
 399                  */
 400                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 401                         vsel = 62;
 402                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 403                         vsel = 61;
 404                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 405                         vsel = 60;
 406                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 407                         vsel = 59;
 408                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
 409                         vsel = 58;
 410                 else
 411                         return -EINVAL;
 412                 break;
 413         case SMPS_OFFSET_EN:
 414                 if (min_uV == 0)
 415                         vsel = 0;
 416                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
 417                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
 418                         vsel++;
 419                 }
 420                 /* Values 1..57 for vsel are linear and can be calculated
 421                  * values 58..62 are non linear.
 422                  */
 423                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 424                         vsel = 62;
 425                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 426                         vsel = 61;
 427                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 428                         vsel = 60;
 429                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 430                         vsel = 59;
 431                 else
 432                         return -EINVAL;
 433                 break;
 434         case SMPS_EXTENDED_EN:
 435                 if (min_uV == 0) {
 436                         vsel = 0;
 437                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
 438                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
 439                         vsel++;
 440                 }
 441                 break;
 442         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
 443                 if (min_uV == 0) {
 444                         vsel = 0;
 445                 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
 446                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
 447                         vsel++;
 448                 }
 449                 break;
 450         }
 451
 452         return vsel;
 453 }
 454
 455 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
 456                                        unsigned int selector)
 457 {
 458         struct twlreg_info *info = rdev_get_drvdata(rdev);
 459
 460         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
 461                             selector);
 462 }
 463
 464 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
 465 {
 466         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 467
 468         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
 469 }
 470
 471 static const struct regulator_ops twlsmps_ops = {
 472         .list_voltage           = twl6030smps_list_voltage,
 473         .map_voltage            = twl6030smps_map_voltage,
 474
 475         .set_voltage_sel        = twl6030smps_set_voltage_sel,
 476         .get_voltage_sel        = twl6030smps_get_voltage_sel,
 477
 478         .enable                 = twl6030reg_enable,
 479         .disable                = twl6030reg_disable,
 480         .is_enabled             = twl6030reg_is_enabled,
 481
 482         .set_mode               = twl6030reg_set_mode,
 483
 484         .get_status             = twl6030reg_get_status,
 485 };
 486
 487 /*----------------------------------------------------------------------*/
 488 static const struct regulator_linear_range twl6030ldo_linear_range[] = {
 489         REGULATOR_LINEAR_RANGE(0, 0, 0, 0),
 490         REGULATOR_LINEAR_RANGE(1000000, 1, 24, 100000),
 491         REGULATOR_LINEAR_RANGE(2750000, 31, 31, 0),
 492 };
 493
 494 #define TWL6030_ADJUSTABLE_SMPS(label) \
 495 static const struct twlreg_info TWL6030_INFO_##label = { \
 496         .desc = { \
 497                 .name = #label, \
 498                 .id = TWL6030_REG_##label, \
 499                 .ops = &twl6030coresmps_ops, \
 500                 .type = REGULATOR_VOLTAGE, \
 501                 .owner = THIS_MODULE, \
 502                 }, \
 503         }
 504
 505 #define TWL6030_ADJUSTABLE_LDO(label, offset) \
 506 static const struct twlreg_info TWL6030_INFO_##label = { \
 507         .base = offset, \
 508         .desc = { \
 509                 .name = #label, \
 510                 .id = TWL6030_REG_##label, \
 511                 .n_voltages = 32, \
 512                 .linear_ranges = twl6030ldo_linear_range, \
 513                 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
 514                 .ops = &twl6030ldo_ops, \
 515                 .type = REGULATOR_VOLTAGE, \
 516                 .owner = THIS_MODULE, \
 517                 }, \
 518         }
 519
 520 #define TWL6032_ADJUSTABLE_LDO(label, offset) \
 521 static const struct twlreg_info TWL6032_INFO_##label = { \
 522         .base = offset, \
 523         .desc = { \
 524                 .name = #label, \
 525                 .id = TWL6032_REG_##label, \
 526                 .n_voltages = 32, \
 527                 .linear_ranges = twl6030ldo_linear_range, \
 528                 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
 529                 .ops = &twl6030ldo_ops, \
 530                 .type = REGULATOR_VOLTAGE, \
 531                 .owner = THIS_MODULE, \
 532                 }, \
 533         }
 534
 535 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
 536 static const struct twlreg_info TWLFIXED_INFO_##label = { \
 537         .base = offset, \
 538         .id = 0, \
 539         .desc = { \
 540                 .name = #label, \
 541                 .id = TWL6030##_REG_##label, \
 542                 .n_voltages = 1, \
 543                 .ops = &twl6030fixed_ops, \
 544                 .type = REGULATOR_VOLTAGE, \
 545                 .owner = THIS_MODULE, \
 546                 .min_uV = mVolts * 1000, \
 547                 .enable_time = turnon_delay, \
 548                 .of_map_mode = NULL, \
 549                 }, \
 550         }
 551
 552 #define TWL6032_ADJUSTABLE_SMPS(label, offset) \
 553 static const struct twlreg_info TWLSMPS_INFO_##label = { \
 554         .base = offset, \
 555         .desc = { \
 556                 .name = #label, \
 557                 .id = TWL6032_REG_##label, \
 558                 .n_voltages = 63, \
 559                 .ops = &twlsmps_ops, \
 560                 .type = REGULATOR_VOLTAGE, \
 561                 .owner = THIS_MODULE, \
 562                 }, \
 563         }
 564
 565 /* VUSBCP is managed *only* by the USB subchip */
 566 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
 567 /* Turnon-delay and remap configuration values for 6030 are not
 568    verified since the specification is not public */
 569 TWL6030_ADJUSTABLE_SMPS(VDD1);
 570 TWL6030_ADJUSTABLE_SMPS(VDD2);
 571 TWL6030_ADJUSTABLE_SMPS(VDD3);
 572 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54);
 573 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58);
 574 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c);
 575 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68);
 576 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c);
 577 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74);
 578 /* 6025 are renamed compared to 6030 versions */
 579 TWL6032_ADJUSTABLE_LDO(LDO2, 0x54);
 580 TWL6032_ADJUSTABLE_LDO(LDO4, 0x58);
 581 TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c);
 582 TWL6032_ADJUSTABLE_LDO(LDO5, 0x68);
 583 TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c);
 584 TWL6032_ADJUSTABLE_LDO(LDO7, 0x74);
 585 TWL6032_ADJUSTABLE_LDO(LDO6, 0x60);
 586 TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64);
 587 TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70);
 588 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
 589 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
 590 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
 591 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
 592 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
 593 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
 594 TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
 595 TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
 596 TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
 597
 598 static u8 twl_get_smps_offset(void)
 599 {
 600         u8 value;
 601
 602         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
 603                         TWL6030_SMPS_OFFSET);
 604         return value;
 605 }
 606
 607 static u8 twl_get_smps_mult(void)
 608 {
 609         u8 value;
 610
 611         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
 612                         TWL6030_SMPS_MULT);
 613         return value;
 614 }
 615
 616 #define TWL_OF_MATCH(comp, family, label) \
 617         { \
 618                 .compatible = comp, \
 619                 .data = &family##_INFO_##label, \
 620         }
 621
 622 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
 623 #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
 624 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
 625 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
 626
 627 static const struct of_device_id twl_of_match[] = {
 628         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
 629         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
 630         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
 631         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
 632         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
 633         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
 634         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
 635         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
 636         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
 637         TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
 638         TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
 639         TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
 640         TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
 641         TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
 642         TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
 643         TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
 644         TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
 645         TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
 646         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
 647         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
 648         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
 649         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
 650         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
 651         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
 652         TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
 653         TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
 654         TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
 655         {},
 656 };
 657 MODULE_DEVICE_TABLE(of, twl_of_match);
 658
 659 static int twlreg_probe(struct platform_device *pdev)
 660 {
 661         int id;
 662         struct twlreg_info              *info;
 663         const struct twlreg_info        *template;
 664         struct regulator_init_data      *initdata;
 665         struct regulation_constraints   *c;
 666         struct regulator_dev            *rdev;
 667         struct regulator_config         config = { };
 668
 669         template = of_device_get_match_data(&pdev->dev);
 670         if (!template)
 671                 return -ENODEV;
 672
 673         id = template->desc.id;
 674         initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,
 675                                                 &template->desc);
 676         if (!initdata)
 677                 return -EINVAL;
 678
 679         info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
 680         if (!info)
 681                 return -ENOMEM;
 682
 683         /* Constrain board-specific capabilities according to what
 684          * this driver and the chip itself can actually do.
 685          */
 686         c = &initdata->constraints;
 687         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
 688         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
 689                                 | REGULATOR_CHANGE_MODE
 690                                 | REGULATOR_CHANGE_STATUS;
 691
 692         switch (id) {
 693         case TWL6032_REG_SMPS3:
 694                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
 695                         info->flags |= SMPS_EXTENDED_EN;
 696                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
 697                         info->flags |= SMPS_OFFSET_EN;
 698                 break;
 699         case TWL6032_REG_SMPS4:
 700                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
 701                         info->flags |= SMPS_EXTENDED_EN;
 702                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
 703                         info->flags |= SMPS_OFFSET_EN;
 704                 break;
 705         case TWL6032_REG_VIO:
 706                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
 707                         info->flags |= SMPS_EXTENDED_EN;
 708                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
 709                         info->flags |= SMPS_OFFSET_EN;
 710                 break;
 711         }
 712
 713         config.dev = &pdev->dev;
 714         config.init_data = initdata;
 715         config.driver_data = info;
 716         config.of_node = pdev->dev.of_node;
 717
 718         rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
 719         if (IS_ERR(rdev)) {
 720                 dev_err(&pdev->dev, "can't register %s, %ld\n",
 721                                 info->desc.name, PTR_ERR(rdev));
 722                 return PTR_ERR(rdev);
 723         }
 724         platform_set_drvdata(pdev, rdev);
 725
 726         /* NOTE:  many regulators support short-circuit IRQs (presentable
 727          * as REGULATOR_OVER_CURRENT notifications?) configured via:
 728          *  - SC_CONFIG
 729          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
 730          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
 731          *  - IT_CONFIG
 732          */
 733
 734         return 0;
 735 }
 736
 737 MODULE_ALIAS("platform:twl6030_reg");
 738
 739 static struct platform_driver twlreg_driver = {
 740         .probe          = twlreg_probe,
 741         /* NOTE: short name, to work around driver model truncation of
 742          * "twl_regulator.12" (and friends) to "twl_regulator.1".
 743          */
 744         .driver  = {
 745                 .name  = "twl6030_reg",
 746                 .of_match_table = of_match_ptr(twl_of_match),
 747         },
 748 };
 749
 750 static int __init twlreg_init(void)
 751 {
 752         return platform_driver_register(&twlreg_driver);
 753 }
 754 subsys_initcall(twlreg_init);
 755
 756 static void __exit twlreg_exit(void)
 757 {
 758         platform_driver_unregister(&twlreg_driver);
 759 }
 760 module_exit(twlreg_exit)
 761
 762 MODULE_DESCRIPTION("TWL6030 regulator driver");
 763 MODULE_LICENSE("GPL");