drivers/regulator/twl6030-regulator.c

   1 /*
   2  * Split TWL6030 logic from twl-regulator.c:
   3  * Copyright (C) 2008 David Brownell
   4  *
   5  * Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/string.h>
  15 #include <linux/slab.h>
  16 #include <linux/init.h>
  17 #include <linux/err.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/of.h>
  20 #include <linux/of_device.h>
  21 #include <linux/regulator/driver.h>
  22 #include <linux/regulator/machine.h>
  23 #include <linux/regulator/of_regulator.h>
  24 #include <linux/mfd/twl.h>
  25 #include <linux/delay.h>
  26
  27 struct twlreg_info {
  28         /* start of regulator's PM_RECEIVER control register bank */
  29         u8                      base;
  30
  31         /* twl resource ID, for resource control state machine */
  32         u8                      id;
  33
  34         u8                      flags;
  35
  36         /* used by regulator core */
  37         struct regulator_desc   desc;
  38
  39         /* chip specific features */
  40         unsigned long           features;
  41
  42         /* data passed from board for external get/set voltage */
  43         void                    *data;
  44 };
  45
  46
  47 /* LDO control registers ... offset is from the base of its register bank.
  48  * The first three registers of all power resource banks help hardware to
  49  * manage the various resource groups.
  50  */
  51 /* Common offset in TWL4030/6030 */
  52 #define VREG_GRP                0
  53 /* TWL6030 register offsets */
  54 #define VREG_TRANS              1
  55 #define VREG_STATE              2
  56 #define VREG_VOLTAGE            3
  57 #define VREG_VOLTAGE_SMPS       4
  58 /* TWL6030 Misc register offsets */
  59 #define VREG_BC_ALL             1
  60 #define VREG_BC_REF             2
  61 #define VREG_BC_PROC            3
  62 #define VREG_BC_CLK_RST         4
  63
  64 /* TWL6030 LDO register values for CFG_STATE */
  65 #define TWL6030_CFG_STATE_OFF   0x00
  66 #define TWL6030_CFG_STATE_ON    0x01
  67 #define TWL6030_CFG_STATE_OFF2  0x02
  68 #define TWL6030_CFG_STATE_SLEEP 0x03
  69 #define TWL6030_CFG_STATE_GRP_SHIFT     5
  70 #define TWL6030_CFG_STATE_APP_SHIFT     2
  71 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
  72 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
  73                                                 TWL6030_CFG_STATE_APP_SHIFT)
  74
  75 /* Flags for SMPS Voltage reading */
  76 #define SMPS_OFFSET_EN          BIT(0)
  77 #define SMPS_EXTENDED_EN        BIT(1)
  78
  79 /* twl6032 SMPS EPROM values */
  80 #define TWL6030_SMPS_OFFSET             0xB0
  81 #define TWL6030_SMPS_MULT               0xB3
  82 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
  83 #define SMPS_MULTOFFSET_VIO     BIT(1)
  84 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
  85
  86 static inline int
  87 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
  88 {
  89         u8 value;
  90         int status;
  91
  92         status = twl_i2c_read_u8(slave_subgp,
  93                         &value, info->base + offset);
  94         return (status < 0) ? status : value;
  95 }
  96
  97 static inline int
  98 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
  99                                                  u8 value)
 100 {
 101         return twl_i2c_write_u8(slave_subgp,
 102                         value, info->base + offset);
 103 }
 104
 105 /* generic power resource operations, which work on all regulators */
 106 static int twlreg_grp(struct regulator_dev *rdev)
 107 {
 108         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
 109                                                                  VREG_GRP);
 110 }
 111
 112 /*
 113  * Enable/disable regulators by joining/leaving the P1 (processor) group.
 114  * We assume nobody else is updating the DEV_GRP registers.
 115  */
 116 /* definition for 6030 family */
 117 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
 118 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
 119 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
 120
 121 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
 122 {
 123         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 124         int                     grp = 0, val;
 125
 126         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
 127                 grp = twlreg_grp(rdev);
 128                 if (grp < 0)
 129                         return grp;
 130                 grp &= P1_GRP_6030;
 131         } else {
 132                 grp = 1;
 133         }
 134
 135         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 136         val = TWL6030_CFG_STATE_APP(val);
 137
 138         return grp && (val == TWL6030_CFG_STATE_ON);
 139 }
 140
 141 #define PB_I2C_BUSY     BIT(0)
 142 #define PB_I2C_BWEN     BIT(1)
 143
 144
 145 static int twl6030reg_enable(struct regulator_dev *rdev)
 146 {
 147         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 148         int                     grp = 0;
 149         int                     ret;
 150
 151         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 152                 grp = twlreg_grp(rdev);
 153         if (grp < 0)
 154                 return grp;
 155
 156         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 157                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
 158                         TWL6030_CFG_STATE_ON);
 159         return ret;
 160 }
 161
 162 static int twl6030reg_disable(struct regulator_dev *rdev)
 163 {
 164         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 165         int                     grp = 0;
 166         int                     ret;
 167
 168         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 169                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
 170
 171         /* For 6030, set the off state for all grps enabled */
 172         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 173                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
 174                         TWL6030_CFG_STATE_OFF);
 175
 176         return ret;
 177 }
 178
 179 static int twl6030reg_get_status(struct regulator_dev *rdev)
 180 {
 181         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 182         int                     val;
 183
 184         val = twlreg_grp(rdev);
 185         if (val < 0)
 186                 return val;
 187
 188         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 189
 190         switch (TWL6030_CFG_STATE_APP(val)) {
 191         case TWL6030_CFG_STATE_ON:
 192                 return REGULATOR_STATUS_NORMAL;
 193
 194         case TWL6030_CFG_STATE_SLEEP:
 195                 return REGULATOR_STATUS_STANDBY;
 196
 197         case TWL6030_CFG_STATE_OFF:
 198         case TWL6030_CFG_STATE_OFF2:
 199         default:
 200                 break;
 201         }
 202
 203         return REGULATOR_STATUS_OFF;
 204 }
 205
 206 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 207 {
 208         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 209         int grp = 0;
 210         int val;
 211
 212         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 213                 grp = twlreg_grp(rdev);
 214
 215         if (grp < 0)
 216                 return grp;
 217
 218         /* Compose the state register settings */
 219         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
 220         /* We can only set the mode through state machine commands... */
 221         switch (mode) {
 222         case REGULATOR_MODE_NORMAL:
 223                 val |= TWL6030_CFG_STATE_ON;
 224                 break;
 225         case REGULATOR_MODE_STANDBY:
 226                 val |= TWL6030_CFG_STATE_SLEEP;
 227                 break;
 228
 229         default:
 230                 return -EINVAL;
 231         }
 232
 233         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
 234 }
 235
 236 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
 237         int max_uV, unsigned *selector)
 238 {
 239         return -ENODEV;
 240 }
 241
 242 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
 243 {
 244         return -ENODEV;
 245 }
 246
 247 static const struct regulator_ops twl6030coresmps_ops = {
 248         .set_voltage    = twl6030coresmps_set_voltage,
 249         .get_voltage    = twl6030coresmps_get_voltage,
 250 };
 251
 252 static int
 253 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 254 {
 255         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 256
 257         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
 258                             selector);
 259 }
 260
 261 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
 262 {
 263         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 264         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
 265
 266         return vsel;
 267 }
 268
 269 static const struct regulator_ops twl6030ldo_ops = {
 270         .list_voltage   = regulator_list_voltage_linear_range,
 271
 272         .set_voltage_sel = twl6030ldo_set_voltage_sel,
 273         .get_voltage_sel = twl6030ldo_get_voltage_sel,
 274
 275         .enable         = twl6030reg_enable,
 276         .disable        = twl6030reg_disable,
 277         .is_enabled     = twl6030reg_is_enabled,
 278
 279         .set_mode       = twl6030reg_set_mode,
 280
 281         .get_status     = twl6030reg_get_status,
 282 };
 283
 284 static const struct regulator_ops twl6030fixed_ops = {
 285         .list_voltage   = regulator_list_voltage_linear,
 286
 287         .enable         = twl6030reg_enable,
 288         .disable        = twl6030reg_disable,
 289         .is_enabled     = twl6030reg_is_enabled,
 290
 291         .set_mode       = twl6030reg_set_mode,
 292
 293         .get_status     = twl6030reg_get_status,
 294 };
 295
 296 /*
 297  * SMPS status and control
 298  */
 299
 300 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
 301 {
 302         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 303
 304         int voltage = 0;
 305
 306         switch (info->flags) {
 307         case SMPS_OFFSET_EN:
 308                 voltage = 100000;
 309                 /* fall through */
 310         case 0:
 311                 switch (index) {
 312                 case 0:
 313                         voltage = 0;
 314                         break;
 315                 case 58:
 316                         voltage = 1350 * 1000;
 317                         break;
 318                 case 59:
 319                         voltage = 1500 * 1000;
 320                         break;
 321                 case 60:
 322                         voltage = 1800 * 1000;
 323                         break;
 324                 case 61:
 325                         voltage = 1900 * 1000;
 326                         break;
 327                 case 62:
 328                         voltage = 2100 * 1000;
 329                         break;
 330                 default:
 331                         voltage += (600000 + (12500 * (index - 1)));
 332                 }
 333                 break;
 334         case SMPS_EXTENDED_EN:
 335                 switch (index) {
 336                 case 0:
 337                         voltage = 0;
 338                         break;
 339                 case 58:
 340                         voltage = 2084 * 1000;
 341                         break;
 342                 case 59:
 343                         voltage = 2315 * 1000;
 344                         break;
 345                 case 60:
 346                         voltage = 2778 * 1000;
 347                         break;
 348                 case 61:
 349                         voltage = 2932 * 1000;
 350                         break;
 351                 case 62:
 352                         voltage = 3241 * 1000;
 353                         break;
 354                 default:
 355                         voltage = (1852000 + (38600 * (index - 1)));
 356                 }
 357                 break;
 358         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
 359                 switch (index) {
 360                 case 0:
 361                         voltage = 0;
 362                         break;
 363                 case 58:
 364                         voltage = 4167 * 1000;
 365                         break;
 366                 case 59:
 367                         voltage = 2315 * 1000;
 368                         break;
 369                 case 60:
 370                         voltage = 2778 * 1000;
 371                         break;
 372                 case 61:
 373                         voltage = 2932 * 1000;
 374                         break;
 375                 case 62:
 376                         voltage = 3241 * 1000;
 377                         break;
 378                 default:
 379                         voltage = (2161000 + (38600 * (index - 1)));
 380                 }
 381                 break;
 382         }
 383
 384         return voltage;
 385 }
 386
 387 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
 388                                    int max_uV)
 389 {
 390         struct twlreg_info *info = rdev_get_drvdata(rdev);
 391         int vsel = 0;
 392
 393         switch (info->flags) {
 394         case 0:
 395                 if (min_uV == 0)
 396                         vsel = 0;
 397                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
 398                         vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 399                         vsel++;
 400                 }
 401                 /* Values 1..57 for vsel are linear and can be calculated
 402                  * values 58..62 are non linear.
 403                  */
 404                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 405                         vsel = 62;
 406                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 407                         vsel = 61;
 408                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 409                         vsel = 60;
 410                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 411                         vsel = 59;
 412                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
 413                         vsel = 58;
 414                 else
 415                         return -EINVAL;
 416                 break;
 417         case SMPS_OFFSET_EN:
 418                 if (min_uV == 0)
 419                         vsel = 0;
 420                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
 421                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
 422                         vsel++;
 423                 }
 424                 /* Values 1..57 for vsel are linear and can be calculated
 425                  * values 58..62 are non linear.
 426                  */
 427                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 428                         vsel = 62;
 429                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 430                         vsel = 61;
 431                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 432                         vsel = 60;
 433                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 434                         vsel = 59;
 435                 else
 436                         return -EINVAL;
 437                 break;
 438         case SMPS_EXTENDED_EN:
 439                 if (min_uV == 0) {
 440                         vsel = 0;
 441                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
 442                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
 443                         vsel++;
 444                 }
 445                 break;
 446         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
 447                 if (min_uV == 0) {
 448                         vsel = 0;
 449                 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
 450                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
 451                         vsel++;
 452                 }
 453                 break;
 454         }
 455
 456         return vsel;
 457 }
 458
 459 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
 460                                        unsigned int selector)
 461 {
 462         struct twlreg_info *info = rdev_get_drvdata(rdev);
 463
 464         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
 465                             selector);
 466 }
 467
 468 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
 469 {
 470         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 471
 472         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
 473 }
 474
 475 static const struct regulator_ops twlsmps_ops = {
 476         .list_voltage           = twl6030smps_list_voltage,
 477         .map_voltage            = twl6030smps_map_voltage,
 478
 479         .set_voltage_sel        = twl6030smps_set_voltage_sel,
 480         .get_voltage_sel        = twl6030smps_get_voltage_sel,
 481
 482         .enable                 = twl6030reg_enable,
 483         .disable                = twl6030reg_disable,
 484         .is_enabled             = twl6030reg_is_enabled,
 485
 486         .set_mode               = twl6030reg_set_mode,
 487
 488         .get_status             = twl6030reg_get_status,
 489 };
 490
 491 /*----------------------------------------------------------------------*/
 492 static const struct regulator_linear_range twl6030ldo_linear_range[] = {
 493         REGULATOR_LINEAR_RANGE(0, 0, 0, 0),
 494         REGULATOR_LINEAR_RANGE(1000000, 1, 24, 100000),
 495         REGULATOR_LINEAR_RANGE(2750000, 31, 31, 0),
 496 };
 497
 498 #define TWL6030_ADJUSTABLE_SMPS(label) \
 499 static const struct twlreg_info TWL6030_INFO_##label = { \
 500         .desc = { \
 501                 .name = #label, \
 502                 .id = TWL6030_REG_##label, \
 503                 .ops = &twl6030coresmps_ops, \
 504                 .type = REGULATOR_VOLTAGE, \
 505                 .owner = THIS_MODULE, \
 506                 }, \
 507         }
 508
 509 #define TWL6030_ADJUSTABLE_LDO(label, offset) \
 510 static const struct twlreg_info TWL6030_INFO_##label = { \
 511         .base = offset, \
 512         .desc = { \
 513                 .name = #label, \
 514                 .id = TWL6030_REG_##label, \
 515                 .n_voltages = 32, \
 516                 .linear_ranges = twl6030ldo_linear_range, \
 517                 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
 518                 .ops = &twl6030ldo_ops, \
 519                 .type = REGULATOR_VOLTAGE, \
 520                 .owner = THIS_MODULE, \
 521                 }, \
 522         }
 523
 524 #define TWL6032_ADJUSTABLE_LDO(label, offset) \
 525 static const struct twlreg_info TWL6032_INFO_##label = { \
 526         .base = offset, \
 527         .desc = { \
 528                 .name = #label, \
 529                 .id = TWL6032_REG_##label, \
 530                 .n_voltages = 32, \
 531                 .linear_ranges = twl6030ldo_linear_range, \
 532                 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
 533                 .ops = &twl6030ldo_ops, \
 534                 .type = REGULATOR_VOLTAGE, \
 535                 .owner = THIS_MODULE, \
 536                 }, \
 537         }
 538
 539 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
 540 static const struct twlreg_info TWLFIXED_INFO_##label = { \
 541         .base = offset, \
 542         .id = 0, \
 543         .desc = { \
 544                 .name = #label, \
 545                 .id = TWL6030##_REG_##label, \
 546                 .n_voltages = 1, \
 547                 .ops = &twl6030fixed_ops, \
 548                 .type = REGULATOR_VOLTAGE, \
 549                 .owner = THIS_MODULE, \
 550                 .min_uV = mVolts * 1000, \
 551                 .enable_time = turnon_delay, \
 552                 .of_map_mode = NULL, \
 553                 }, \
 554         }
 555
 556 #define TWL6032_ADJUSTABLE_SMPS(label, offset) \
 557 static const struct twlreg_info TWLSMPS_INFO_##label = { \
 558         .base = offset, \
 559         .desc = { \
 560                 .name = #label, \
 561                 .id = TWL6032_REG_##label, \
 562                 .n_voltages = 63, \
 563                 .ops = &twlsmps_ops, \
 564                 .type = REGULATOR_VOLTAGE, \
 565                 .owner = THIS_MODULE, \
 566                 }, \
 567         }
 568
 569 /* VUSBCP is managed *only* by the USB subchip */
 570 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
 571 /* Turnon-delay and remap configuration values for 6030 are not
 572    verified since the specification is not public */
 573 TWL6030_ADJUSTABLE_SMPS(VDD1);
 574 TWL6030_ADJUSTABLE_SMPS(VDD2);
 575 TWL6030_ADJUSTABLE_SMPS(VDD3);
 576 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54);
 577 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58);
 578 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c);
 579 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68);
 580 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c);
 581 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74);
 582 /* 6025 are renamed compared to 6030 versions */
 583 TWL6032_ADJUSTABLE_LDO(LDO2, 0x54);
 584 TWL6032_ADJUSTABLE_LDO(LDO4, 0x58);
 585 TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c);
 586 TWL6032_ADJUSTABLE_LDO(LDO5, 0x68);
 587 TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c);
 588 TWL6032_ADJUSTABLE_LDO(LDO7, 0x74);
 589 TWL6032_ADJUSTABLE_LDO(LDO6, 0x60);
 590 TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64);
 591 TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70);
 592 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
 593 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
 594 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
 595 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
 596 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
 597 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
 598 TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
 599 TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
 600 TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
 601
 602 static u8 twl_get_smps_offset(void)
 603 {
 604         u8 value;
 605
 606         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
 607                         TWL6030_SMPS_OFFSET);
 608         return value;
 609 }
 610
 611 static u8 twl_get_smps_mult(void)
 612 {
 613         u8 value;
 614
 615         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
 616                         TWL6030_SMPS_MULT);
 617         return value;
 618 }
 619
 620 #define TWL_OF_MATCH(comp, family, label) \
 621         { \
 622                 .compatible = comp, \
 623                 .data = &family##_INFO_##label, \
 624         }
 625
 626 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
 627 #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
 628 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
 629 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
 630
 631 static const struct of_device_id twl_of_match[] = {
 632         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
 633         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
 634         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
 635         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
 636         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
 637         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
 638         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
 639         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
 640         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
 641         TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
 642         TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
 643         TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
 644         TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
 645         TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
 646         TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
 647         TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
 648         TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
 649         TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
 650         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
 651         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
 652         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
 653         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
 654         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
 655         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
 656         TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
 657         TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
 658         TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
 659         {},
 660 };
 661 MODULE_DEVICE_TABLE(of, twl_of_match);
 662
 663 static int twlreg_probe(struct platform_device *pdev)
 664 {
 665         int id;
 666         struct twlreg_info              *info;
 667         const struct twlreg_info        *template;
 668         struct regulator_init_data      *initdata;
 669         struct regulation_constraints   *c;
 670         struct regulator_dev            *rdev;
 671         struct regulator_config         config = { };
 672
 673         template = of_device_get_match_data(&pdev->dev);
 674         if (!template)
 675                 return -ENODEV;
 676
 677         id = template->desc.id;
 678         initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,
 679                                                 &template->desc);
 680         if (!initdata)
 681                 return -EINVAL;
 682
 683         info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
 684         if (!info)
 685                 return -ENOMEM;
 686
 687         /* Constrain board-specific capabilities according to what
 688          * this driver and the chip itself can actually do.
 689          */
 690         c = &initdata->constraints;
 691         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
 692         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
 693                                 | REGULATOR_CHANGE_MODE
 694                                 | REGULATOR_CHANGE_STATUS;
 695
 696         switch (id) {
 697         case TWL6032_REG_SMPS3:
 698                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
 699                         info->flags |= SMPS_EXTENDED_EN;
 700                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
 701                         info->flags |= SMPS_OFFSET_EN;
 702                 break;
 703         case TWL6032_REG_SMPS4:
 704                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
 705                         info->flags |= SMPS_EXTENDED_EN;
 706                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
 707                         info->flags |= SMPS_OFFSET_EN;
 708                 break;
 709         case TWL6032_REG_VIO:
 710                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
 711                         info->flags |= SMPS_EXTENDED_EN;
 712                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
 713                         info->flags |= SMPS_OFFSET_EN;
 714                 break;
 715         }
 716
 717         config.dev = &pdev->dev;
 718         config.init_data = initdata;
 719         config.driver_data = info;
 720         config.of_node = pdev->dev.of_node;
 721
 722         rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
 723         if (IS_ERR(rdev)) {
 724                 dev_err(&pdev->dev, "can't register %s, %ld\n",
 725                                 info->desc.name, PTR_ERR(rdev));
 726                 return PTR_ERR(rdev);
 727         }
 728         platform_set_drvdata(pdev, rdev);
 729
 730         /* NOTE:  many regulators support short-circuit IRQs (presentable
 731          * as REGULATOR_OVER_CURRENT notifications?) configured via:
 732          *  - SC_CONFIG
 733          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
 734          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
 735          *  - IT_CONFIG
 736          */
 737
 738         return 0;
 739 }
 740
 741 MODULE_ALIAS("platform:twl6030_reg");
 742
 743 static struct platform_driver twlreg_driver = {
 744         .probe          = twlreg_probe,
 745         /* NOTE: short name, to work around driver model truncation of
 746          * "twl_regulator.12" (and friends) to "twl_regulator.1".
 747          */
 748         .driver  = {
 749                 .name  = "twl6030_reg",
 750                 .of_match_table = of_match_ptr(twl_of_match),
 751         },
 752 };
 753
 754 static int __init twlreg_init(void)
 755 {
 756         return platform_driver_register(&twlreg_driver);
 757 }
 758 subsys_initcall(twlreg_init);
 759
 760 static void __exit twlreg_exit(void)
 761 {
 762         platform_driver_unregister(&twlreg_driver);
 763 }
 764 module_exit(twlreg_exit)
 765
 766 MODULE_DESCRIPTION("TWL6030 regulator driver");
 767 MODULE_LICENSE("GPL");