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         /* chip constraints on regulator behavior */
  35         u16                     min_mV;
  36
  37         u8                      flags;
  38
  39         /* used by regulator core */
  40         struct regulator_desc   desc;
  41
  42         /* chip specific features */
  43         unsigned long           features;
  44
  45         /* data passed from board for external get/set voltage */
  46         void                    *data;
  47 };
  48
  49
  50 /* LDO control registers ... offset is from the base of its register bank.
  51  * The first three registers of all power resource banks help hardware to
  52  * manage the various resource groups.
  53  */
  54 /* Common offset in TWL4030/6030 */
  55 #define VREG_GRP                0
  56 /* TWL6030 register offsets */
  57 #define VREG_TRANS              1
  58 #define VREG_STATE              2
  59 #define VREG_VOLTAGE            3
  60 #define VREG_VOLTAGE_SMPS       4
  61 /* TWL6030 Misc register offsets */
  62 #define VREG_BC_ALL             1
  63 #define VREG_BC_REF             2
  64 #define VREG_BC_PROC            3
  65 #define VREG_BC_CLK_RST         4
  66
  67 /* TWL6030 LDO register values for CFG_STATE */
  68 #define TWL6030_CFG_STATE_OFF   0x00
  69 #define TWL6030_CFG_STATE_ON    0x01
  70 #define TWL6030_CFG_STATE_OFF2  0x02
  71 #define TWL6030_CFG_STATE_SLEEP 0x03
  72 #define TWL6030_CFG_STATE_GRP_SHIFT     5
  73 #define TWL6030_CFG_STATE_APP_SHIFT     2
  74 #define TWL6030_CFG_STATE_MASK          0x03
  75 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
  76 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
  77                                                 TWL6030_CFG_STATE_APP_SHIFT)
  78
  79 /* Flags for SMPS Voltage reading */
  80 #define SMPS_OFFSET_EN          BIT(0)
  81 #define SMPS_EXTENDED_EN        BIT(1)
  82
  83 /* twl6032 SMPS EPROM values */
  84 #define TWL6030_SMPS_OFFSET             0xB0
  85 #define TWL6030_SMPS_MULT               0xB3
  86 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
  87 #define SMPS_MULTOFFSET_VIO     BIT(1)
  88 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
  89
  90 static inline int
  91 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
  92 {
  93         u8 value;
  94         int status;
  95
  96         status = twl_i2c_read_u8(slave_subgp,
  97                         &value, info->base + offset);
  98         return (status < 0) ? status : value;
  99 }
 100
 101 static inline int
 102 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
 103                                                  u8 value)
 104 {
 105         return twl_i2c_write_u8(slave_subgp,
 106                         value, info->base + offset);
 107 }
 108
 109 /* generic power resource operations, which work on all regulators */
 110 static int twlreg_grp(struct regulator_dev *rdev)
 111 {
 112         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
 113                                                                  VREG_GRP);
 114 }
 115
 116 /*
 117  * Enable/disable regulators by joining/leaving the P1 (processor) group.
 118  * We assume nobody else is updating the DEV_GRP registers.
 119  */
 120 /* definition for 6030 family */
 121 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
 122 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
 123 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
 124
 125 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
 126 {
 127         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 128         int                     grp = 0, val;
 129
 130         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
 131                 grp = twlreg_grp(rdev);
 132                 if (grp < 0)
 133                         return grp;
 134                 grp &= P1_GRP_6030;
 135                 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 136                 val = TWL6030_CFG_STATE_APP(val);
 137         } else {
 138                 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 139                 val &= TWL6030_CFG_STATE_MASK;
 140                 grp = 1;
 141         }
 142
 143         return grp && (val == TWL6030_CFG_STATE_ON);
 144 }
 145
 146 #define PB_I2C_BUSY     BIT(0)
 147 #define PB_I2C_BWEN     BIT(1)
 148
 149
 150 static int twl6030reg_enable(struct regulator_dev *rdev)
 151 {
 152         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 153         int                     grp = 0;
 154         int                     ret;
 155
 156         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 157                 grp = twlreg_grp(rdev);
 158         if (grp < 0)
 159                 return grp;
 160
 161         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 162                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
 163                         TWL6030_CFG_STATE_ON);
 164         return ret;
 165 }
 166
 167 static int twl6030reg_disable(struct regulator_dev *rdev)
 168 {
 169         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 170         int                     grp = 0;
 171         int                     ret;
 172
 173         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 174                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
 175
 176         /* For 6030, set the off state for all grps enabled */
 177         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 178                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
 179                         TWL6030_CFG_STATE_OFF);
 180
 181         return ret;
 182 }
 183
 184 static int twl6030reg_get_status(struct regulator_dev *rdev)
 185 {
 186         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 187         int                     val;
 188
 189         val = twlreg_grp(rdev);
 190         if (val < 0)
 191                 return val;
 192
 193         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 194
 195         if (info->features & TWL6032_SUBCLASS)
 196                 val &= TWL6030_CFG_STATE_MASK;
 197         else
 198                 val = TWL6030_CFG_STATE_APP(val);
 199
 200         switch (val) {
 201         case TWL6030_CFG_STATE_ON:
 202                 return REGULATOR_STATUS_NORMAL;
 203
 204         case TWL6030_CFG_STATE_SLEEP:
 205                 return REGULATOR_STATUS_STANDBY;
 206
 207         case TWL6030_CFG_STATE_OFF:
 208         case TWL6030_CFG_STATE_OFF2:
 209         default:
 210                 break;
 211         }
 212
 213         return REGULATOR_STATUS_OFF;
 214 }
 215
 216 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 217 {
 218         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 219         int grp = 0;
 220         int val;
 221
 222         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 223                 grp = twlreg_grp(rdev);
 224
 225         if (grp < 0)
 226                 return grp;
 227
 228         /* Compose the state register settings */
 229         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
 230         /* We can only set the mode through state machine commands... */
 231         switch (mode) {
 232         case REGULATOR_MODE_NORMAL:
 233                 val |= TWL6030_CFG_STATE_ON;
 234                 break;
 235         case REGULATOR_MODE_STANDBY:
 236                 val |= TWL6030_CFG_STATE_SLEEP;
 237                 break;
 238
 239         default:
 240                 return -EINVAL;
 241         }
 242
 243         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
 244 }
 245
 246 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
 247         int max_uV, unsigned *selector)
 248 {
 249         return -ENODEV;
 250 }
 251
 252 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
 253 {
 254         return -ENODEV;
 255 }
 256
 257 static struct regulator_ops twl6030coresmps_ops = {
 258         .set_voltage    = twl6030coresmps_set_voltage,
 259         .get_voltage    = twl6030coresmps_get_voltage,
 260 };
 261
 262 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
 263 {
 264         struct twlreg_info *info = rdev_get_drvdata(rdev);
 265
 266         switch (sel) {
 267         case 0:
 268                 return 0;
 269         case 1 ... 24:
 270                 /* Linear mapping from 00000001 to 00011000:
 271                  * Absolute voltage value = 1.0 V + 0.1 V × (sel – 00000001)
 272                  */
 273                 return (info->min_mV + 100 * (sel - 1)) * 1000;
 274         case 25 ... 30:
 275                 return -EINVAL;
 276         case 31:
 277                 return 2750000;
 278         default:
 279                 return -EINVAL;
 280         }
 281 }
 282
 283 static int
 284 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 285 {
 286         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 287
 288         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
 289                             selector);
 290 }
 291
 292 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
 293 {
 294         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 295         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
 296
 297         return vsel;
 298 }
 299
 300 static struct regulator_ops twl6030ldo_ops = {
 301         .list_voltage   = twl6030ldo_list_voltage,
 302
 303         .set_voltage_sel = twl6030ldo_set_voltage_sel,
 304         .get_voltage_sel = twl6030ldo_get_voltage_sel,
 305
 306         .enable         = twl6030reg_enable,
 307         .disable        = twl6030reg_disable,
 308         .is_enabled     = twl6030reg_is_enabled,
 309
 310         .set_mode       = twl6030reg_set_mode,
 311
 312         .get_status     = twl6030reg_get_status,
 313 };
 314
 315 static struct regulator_ops twl6030fixed_ops = {
 316         .list_voltage   = regulator_list_voltage_linear,
 317
 318         .enable         = twl6030reg_enable,
 319         .disable        = twl6030reg_disable,
 320         .is_enabled     = twl6030reg_is_enabled,
 321
 322         .set_mode       = twl6030reg_set_mode,
 323
 324         .get_status     = twl6030reg_get_status,
 325 };
 326
 327 /*
 328  * SMPS status and control
 329  */
 330
 331 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
 332 {
 333         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 334
 335         int voltage = 0;
 336
 337         switch (info->flags) {
 338         case SMPS_OFFSET_EN:
 339                 voltage = 100000;
 340                 /* fall through */
 341         case 0:
 342                 switch (index) {
 343                 case 0:
 344                         voltage = 0;
 345                         break;
 346                 case 58:
 347                         voltage = 1350 * 1000;
 348                         break;
 349                 case 59:
 350                         voltage = 1500 * 1000;
 351                         break;
 352                 case 60:
 353                         voltage = 1800 * 1000;
 354                         break;
 355                 case 61:
 356                         voltage = 1900 * 1000;
 357                         break;
 358                 case 62:
 359                         voltage = 2100 * 1000;
 360                         break;
 361                 default:
 362                         voltage += (600000 + (12500 * (index - 1)));
 363                 }
 364                 break;
 365         case SMPS_EXTENDED_EN:
 366                 switch (index) {
 367                 case 0:
 368                         voltage = 0;
 369                         break;
 370                 case 58:
 371                         voltage = 2084 * 1000;
 372                         break;
 373                 case 59:
 374                         voltage = 2315 * 1000;
 375                         break;
 376                 case 60:
 377                         voltage = 2778 * 1000;
 378                         break;
 379                 case 61:
 380                         voltage = 2932 * 1000;
 381                         break;
 382                 case 62:
 383                         voltage = 3241 * 1000;
 384                         break;
 385                 default:
 386                         voltage = (1852000 + (38600 * (index - 1)));
 387                 }
 388                 break;
 389         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
 390                 switch (index) {
 391                 case 0:
 392                         voltage = 0;
 393                         break;
 394                 case 58:
 395                         voltage = 4167 * 1000;
 396                         break;
 397                 case 59:
 398                         voltage = 2315 * 1000;
 399                         break;
 400                 case 60:
 401                         voltage = 2778 * 1000;
 402                         break;
 403                 case 61:
 404                         voltage = 2932 * 1000;
 405                         break;
 406                 case 62:
 407                         voltage = 3241 * 1000;
 408                         break;
 409                 default:
 410                         voltage = (2161000 + (38600 * (index - 1)));
 411                 }
 412                 break;
 413         }
 414
 415         return voltage;
 416 }
 417
 418 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
 419                                    int max_uV)
 420 {
 421         struct twlreg_info *info = rdev_get_drvdata(rdev);
 422         int vsel = 0;
 423
 424         switch (info->flags) {
 425         case 0:
 426                 if (min_uV == 0)
 427                         vsel = 0;
 428                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
 429                         vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 430                         vsel++;
 431                 }
 432                 /* Values 1..57 for vsel are linear and can be calculated
 433                  * values 58..62 are non linear.
 434                  */
 435                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 436                         vsel = 62;
 437                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 438                         vsel = 61;
 439                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 440                         vsel = 60;
 441                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 442                         vsel = 59;
 443                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
 444                         vsel = 58;
 445                 else
 446                         return -EINVAL;
 447                 break;
 448         case SMPS_OFFSET_EN:
 449                 if (min_uV == 0)
 450                         vsel = 0;
 451                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
 452                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
 453                         vsel++;
 454                 }
 455                 /* Values 1..57 for vsel are linear and can be calculated
 456                  * values 58..62 are non linear.
 457                  */
 458                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 459                         vsel = 62;
 460                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 461                         vsel = 61;
 462                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 463                         vsel = 60;
 464                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 465                         vsel = 59;
 466                 else
 467                         return -EINVAL;
 468                 break;
 469         case SMPS_EXTENDED_EN:
 470                 if (min_uV == 0) {
 471                         vsel = 0;
 472                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
 473                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
 474                         vsel++;
 475                 }
 476                 break;
 477         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
 478                 if (min_uV == 0) {
 479                         vsel = 0;
 480                 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
 481                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
 482                         vsel++;
 483                 }
 484                 break;
 485         }
 486
 487         return vsel;
 488 }
 489
 490 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
 491                                        unsigned int selector)
 492 {
 493         struct twlreg_info *info = rdev_get_drvdata(rdev);
 494
 495         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
 496                             selector);
 497 }
 498
 499 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
 500 {
 501         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 502
 503         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
 504 }
 505
 506 static struct regulator_ops twlsmps_ops = {
 507         .list_voltage           = twl6030smps_list_voltage,
 508         .map_voltage            = twl6030smps_map_voltage,
 509
 510         .set_voltage_sel        = twl6030smps_set_voltage_sel,
 511         .get_voltage_sel        = twl6030smps_get_voltage_sel,
 512
 513         .enable                 = twl6030reg_enable,
 514         .disable                = twl6030reg_disable,
 515         .is_enabled             = twl6030reg_is_enabled,
 516
 517         .set_mode               = twl6030reg_set_mode,
 518
 519         .get_status             = twl6030reg_get_status,
 520 };
 521
 522 /*----------------------------------------------------------------------*/
 523
 524 #define TWL6030_ADJUSTABLE_SMPS(label) \
 525 static const struct twlreg_info TWL6030_INFO_##label = { \
 526         .desc = { \
 527                 .name = #label, \
 528                 .id = TWL6030_REG_##label, \
 529                 .ops = &twl6030coresmps_ops, \
 530                 .type = REGULATOR_VOLTAGE, \
 531                 .owner = THIS_MODULE, \
 532                 }, \
 533         }
 534
 535 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts) \
 536 static const struct twlreg_info TWL6030_INFO_##label = { \
 537         .base = offset, \
 538         .min_mV = min_mVolts, \
 539         .desc = { \
 540                 .name = #label, \
 541                 .id = TWL6030_REG_##label, \
 542                 .n_voltages = 32, \
 543                 .ops = &twl6030ldo_ops, \
 544                 .type = REGULATOR_VOLTAGE, \
 545                 .owner = THIS_MODULE, \
 546                 }, \
 547         }
 548
 549 #define TWL6032_ADJUSTABLE_LDO(label, offset, min_mVolts) \
 550 static const struct twlreg_info TWL6032_INFO_##label = { \
 551         .base = offset, \
 552         .min_mV = min_mVolts, \
 553         .desc = { \
 554                 .name = #label, \
 555                 .id = TWL6032_REG_##label, \
 556                 .n_voltages = 32, \
 557                 .ops = &twl6030ldo_ops, \
 558                 .type = REGULATOR_VOLTAGE, \
 559                 .owner = THIS_MODULE, \
 560                 }, \
 561         }
 562
 563 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
 564 static const struct twlreg_info TWLFIXED_INFO_##label = { \
 565         .base = offset, \
 566         .id = 0, \
 567         .min_mV = mVolts, \
 568         .desc = { \
 569                 .name = #label, \
 570                 .id = TWL6030##_REG_##label, \
 571                 .n_voltages = 1, \
 572                 .ops = &twl6030fixed_ops, \
 573                 .type = REGULATOR_VOLTAGE, \
 574                 .owner = THIS_MODULE, \
 575                 .min_uV = mVolts * 1000, \
 576                 .enable_time = turnon_delay, \
 577                 .of_map_mode = NULL, \
 578                 }, \
 579         }
 580
 581 #define TWL6032_ADJUSTABLE_SMPS(label, offset) \
 582 static const struct twlreg_info TWLSMPS_INFO_##label = { \
 583         .base = offset, \
 584         .min_mV = 600, \
 585         .desc = { \
 586                 .name = #label, \
 587                 .id = TWL6032_REG_##label, \
 588                 .n_voltages = 63, \
 589                 .ops = &twlsmps_ops, \
 590                 .type = REGULATOR_VOLTAGE, \
 591                 .owner = THIS_MODULE, \
 592                 }, \
 593         }
 594
 595 /* VUSBCP is managed *only* by the USB subchip */
 596 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
 597 /* Turnon-delay and remap configuration values for 6030 are not
 598    verified since the specification is not public */
 599 TWL6030_ADJUSTABLE_SMPS(VDD1);
 600 TWL6030_ADJUSTABLE_SMPS(VDD2);
 601 TWL6030_ADJUSTABLE_SMPS(VDD3);
 602 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000);
 603 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000);
 604 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000);
 605 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000);
 606 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000);
 607 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000);
 608 /* 6025 are renamed compared to 6030 versions */
 609 TWL6032_ADJUSTABLE_LDO(LDO2, 0x54, 1000);
 610 TWL6032_ADJUSTABLE_LDO(LDO4, 0x58, 1000);
 611 TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c, 1000);
 612 TWL6032_ADJUSTABLE_LDO(LDO5, 0x68, 1000);
 613 TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c, 1000);
 614 TWL6032_ADJUSTABLE_LDO(LDO7, 0x74, 1000);
 615 TWL6032_ADJUSTABLE_LDO(LDO6, 0x60, 1000);
 616 TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64, 1000);
 617 TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000);
 618 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
 619 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
 620 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
 621 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
 622 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
 623 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
 624 TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
 625 TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
 626 TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
 627
 628 static u8 twl_get_smps_offset(void)
 629 {
 630         u8 value;
 631
 632         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
 633                         TWL6030_SMPS_OFFSET);
 634         return value;
 635 }
 636
 637 static u8 twl_get_smps_mult(void)
 638 {
 639         u8 value;
 640
 641         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
 642                         TWL6030_SMPS_MULT);
 643         return value;
 644 }
 645
 646 #define TWL_OF_MATCH(comp, family, label) \
 647         { \
 648                 .compatible = comp, \
 649                 .data = &family##_INFO_##label, \
 650         }
 651
 652 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
 653 #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
 654 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
 655 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
 656
 657 static const struct of_device_id twl_of_match[] = {
 658         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
 659         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
 660         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
 661         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
 662         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
 663         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
 664         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
 665         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
 666         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
 667         TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
 668         TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
 669         TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
 670         TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
 671         TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
 672         TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
 673         TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
 674         TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
 675         TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
 676         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
 677         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
 678         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
 679         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
 680         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
 681         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
 682         TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
 683         TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
 684         TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
 685         {},
 686 };
 687 MODULE_DEVICE_TABLE(of, twl_of_match);
 688
 689 static int twlreg_probe(struct platform_device *pdev)
 690 {
 691         int id;
 692         struct twlreg_info              *info;
 693         const struct twlreg_info        *template;
 694         struct regulator_init_data      *initdata;
 695         struct regulation_constraints   *c;
 696         struct regulator_dev            *rdev;
 697         const struct of_device_id       *match;
 698         struct regulator_config         config = { };
 699
 700         match = of_match_device(twl_of_match, &pdev->dev);
 701         if (!match)
 702                 return -ENODEV;
 703
 704         template = match->data;
 705         if (!template)
 706                 return -ENODEV;
 707
 708         id = template->desc.id;
 709         initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,
 710                                                 &template->desc);
 711         if (!initdata)
 712                 return -EINVAL;
 713
 714         info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
 715         if (!info)
 716                 return -ENOMEM;
 717
 718         /* Constrain board-specific capabilities according to what
 719          * this driver and the chip itself can actually do.
 720          */
 721         c = &initdata->constraints;
 722         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
 723         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
 724                                 | REGULATOR_CHANGE_MODE
 725                                 | REGULATOR_CHANGE_STATUS;
 726
 727         switch (id) {
 728         case TWL6032_REG_SMPS3:
 729                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
 730                         info->flags |= SMPS_EXTENDED_EN;
 731                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
 732                         info->flags |= SMPS_OFFSET_EN;
 733                 break;
 734         case TWL6032_REG_SMPS4:
 735                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
 736                         info->flags |= SMPS_EXTENDED_EN;
 737                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
 738                         info->flags |= SMPS_OFFSET_EN;
 739                 break;
 740         case TWL6032_REG_VIO:
 741                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
 742                         info->flags |= SMPS_EXTENDED_EN;
 743                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
 744                         info->flags |= SMPS_OFFSET_EN;
 745                 break;
 746         }
 747
 748         config.dev = &pdev->dev;
 749         config.init_data = initdata;
 750         config.driver_data = info;
 751         config.of_node = pdev->dev.of_node;
 752
 753         rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
 754         if (IS_ERR(rdev)) {
 755                 dev_err(&pdev->dev, "can't register %s, %ld\n",
 756                                 info->desc.name, PTR_ERR(rdev));
 757                 return PTR_ERR(rdev);
 758         }
 759         platform_set_drvdata(pdev, rdev);
 760
 761         /* NOTE:  many regulators support short-circuit IRQs (presentable
 762          * as REGULATOR_OVER_CURRENT notifications?) configured via:
 763          *  - SC_CONFIG
 764          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
 765          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
 766          *  - IT_CONFIG
 767          */
 768
 769         return 0;
 770 }
 771
 772 MODULE_ALIAS("platform:twl6030_reg");
 773
 774 static struct platform_driver twlreg_driver = {
 775         .probe          = twlreg_probe,
 776         /* NOTE: short name, to work around driver model truncation of
 777          * "twl_regulator.12" (and friends) to "twl_regulator.1".
 778          */
 779         .driver  = {
 780                 .name  = "twl6030_reg",
 781                 .of_match_table = of_match_ptr(twl_of_match),
 782         },
 783 };
 784
 785 static int __init twlreg_init(void)
 786 {
 787         return platform_driver_register(&twlreg_driver);
 788 }
 789 subsys_initcall(twlreg_init);
 790
 791 static void __exit twlreg_exit(void)
 792 {
 793         platform_driver_unregister(&twlreg_driver);
 794 }
 795 module_exit(twlreg_exit)
 796
 797 MODULE_DESCRIPTION("TWL6030 regulator driver");
 798 MODULE_LICENSE("GPL");