kernel/drivers/regulator/twl-regulator.c

   1 /*
   2  * twl-regulator.c -- support regulators in twl4030/twl6030 family chips
   3  *
   4  * Copyright (C) 2008 David Brownell
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/string.h>
  14 #include <linux/slab.h>
  15 #include <linux/init.h>
  16 #include <linux/err.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/of.h>
  19 #include <linux/of_device.h>
  20 #include <linux/regulator/driver.h>
  21 #include <linux/regulator/machine.h>
  22 #include <linux/regulator/of_regulator.h>
  23 #include <linux/i2c/twl.h>
  24
  25
  26 /*
  27  * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
  28  * USB OTG transceiver, an RTC, ADC, PWM, and lots more.  Some versions
  29  * include an audio codec, battery charger, and more voltage regulators.
  30  * These chips are often used in OMAP-based systems.
  31  *
  32  * This driver implements software-based resource control for various
  33  * voltage regulators.  This is usually augmented with state machine
  34  * based control.
  35  */
  36
  37 struct twlreg_info {
  38         /* start of regulator's PM_RECEIVER control register bank */
  39         u8                      base;
  40
  41         /* twl resource ID, for resource control state machine */
  42         u8                      id;
  43
  44         /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
  45         u8                      table_len;
  46         const u16               *table;
  47
  48         /* State REMAP default configuration */
  49         u8                      remap;
  50
  51         /* chip constraints on regulator behavior */
  52         u16                     min_mV;
  53         u16                     max_mV;
  54
  55         u8                      flags;
  56
  57         /* used by regulator core */
  58         struct regulator_desc   desc;
  59
  60         /* chip specific features */
  61         unsigned long           features;
  62
  63         /*
  64          * optional override functions for voltage set/get
  65          * these are currently only used for SMPS regulators
  66          */
  67         int                     (*get_voltage)(void *data);
  68         int                     (*set_voltage)(void *data, int target_uV);
  69
  70         /* data passed from board for external get/set voltage */
  71         void                    *data;
  72 };
  73
  74
  75 /* LDO control registers ... offset is from the base of its register bank.
  76  * The first three registers of all power resource banks help hardware to
  77  * manage the various resource groups.
  78  */
  79 /* Common offset in TWL4030/6030 */
  80 #define VREG_GRP                0
  81 /* TWL4030 register offsets */
  82 #define VREG_TYPE               1
  83 #define VREG_REMAP              2
  84 #define VREG_DEDICATED          3       /* LDO control */
  85 #define VREG_VOLTAGE_SMPS_4030  9
  86 /* TWL6030 register offsets */
  87 #define VREG_TRANS              1
  88 #define VREG_STATE              2
  89 #define VREG_VOLTAGE            3
  90 #define VREG_VOLTAGE_SMPS       4
  91 /* TWL6030 Misc register offsets */
  92 #define VREG_BC_ALL             1
  93 #define VREG_BC_REF             2
  94 #define VREG_BC_PROC            3
  95 #define VREG_BC_CLK_RST         4
  96
  97 /* TWL6030 LDO register values for CFG_STATE */
  98 #define TWL6030_CFG_STATE_OFF   0x00
  99 #define TWL6030_CFG_STATE_ON    0x01
 100 #define TWL6030_CFG_STATE_OFF2  0x02
 101 #define TWL6030_CFG_STATE_SLEEP 0x03
 102 #define TWL6030_CFG_STATE_GRP_SHIFT     5
 103 #define TWL6030_CFG_STATE_APP_SHIFT     2
 104 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
 105 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
 106                                                 TWL6030_CFG_STATE_APP_SHIFT)
 107
 108 /* Flags for SMPS Voltage reading */
 109 #define SMPS_OFFSET_EN          BIT(0)
 110 #define SMPS_EXTENDED_EN        BIT(1)
 111
 112 /* twl6032 SMPS EPROM values */
 113 #define TWL6030_SMPS_OFFSET             0xB0
 114 #define TWL6030_SMPS_MULT               0xB3
 115 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
 116 #define SMPS_MULTOFFSET_VIO     BIT(1)
 117 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
 118
 119 static inline int
 120 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
 121 {
 122         u8 value;
 123         int status;
 124
 125         status = twl_i2c_read_u8(slave_subgp,
 126                         &value, info->base + offset);
 127         return (status < 0) ? status : value;
 128 }
 129
 130 static inline int
 131 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
 132                                                  u8 value)
 133 {
 134         return twl_i2c_write_u8(slave_subgp,
 135                         value, info->base + offset);
 136 }
 137
 138 /*----------------------------------------------------------------------*/
 139
 140 /* generic power resource operations, which work on all regulators */
 141
 142 static int twlreg_grp(struct regulator_dev *rdev)
 143 {
 144         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
 145                                                                  VREG_GRP);
 146 }
 147
 148 /*
 149  * Enable/disable regulators by joining/leaving the P1 (processor) group.
 150  * We assume nobody else is updating the DEV_GRP registers.
 151  */
 152 /* definition for 4030 family */
 153 #define P3_GRP_4030     BIT(7)          /* "peripherals" */
 154 #define P2_GRP_4030     BIT(6)          /* secondary processor, modem, etc */
 155 #define P1_GRP_4030     BIT(5)          /* CPU/Linux */
 156 /* definition for 6030 family */
 157 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
 158 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
 159 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
 160
 161 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
 162 {
 163         int     state = twlreg_grp(rdev);
 164
 165         if (state < 0)
 166                 return state;
 167
 168         return state & P1_GRP_4030;
 169 }
 170
 171 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
 172 {
 173         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 174         int                     grp = 0, val;
 175
 176         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
 177                 grp = twlreg_grp(rdev);
 178                 if (grp < 0)
 179                         return grp;
 180                 grp &= P1_GRP_6030;
 181         } else {
 182                 grp = 1;
 183         }
 184
 185         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 186         val = TWL6030_CFG_STATE_APP(val);
 187
 188         return grp && (val == TWL6030_CFG_STATE_ON);
 189 }
 190
 191 static int twl4030reg_enable(struct regulator_dev *rdev)
 192 {
 193         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 194         int                     grp;
 195         int                     ret;
 196
 197         grp = twlreg_grp(rdev);
 198         if (grp < 0)
 199                 return grp;
 200
 201         grp |= P1_GRP_4030;
 202
 203         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
 204
 205         return ret;
 206 }
 207
 208 static int twl6030reg_enable(struct regulator_dev *rdev)
 209 {
 210         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 211         int                     grp = 0;
 212         int                     ret;
 213
 214         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 215                 grp = twlreg_grp(rdev);
 216         if (grp < 0)
 217                 return grp;
 218
 219         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 220                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
 221                         TWL6030_CFG_STATE_ON);
 222         return ret;
 223 }
 224
 225 static int twl4030reg_disable(struct regulator_dev *rdev)
 226 {
 227         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 228         int                     grp;
 229         int                     ret;
 230
 231         grp = twlreg_grp(rdev);
 232         if (grp < 0)
 233                 return grp;
 234
 235         grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
 236
 237         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
 238
 239         return ret;
 240 }
 241
 242 static int twl6030reg_disable(struct regulator_dev *rdev)
 243 {
 244         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 245         int                     grp = 0;
 246         int                     ret;
 247
 248         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 249                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
 250
 251         /* For 6030, set the off state for all grps enabled */
 252         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 253                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
 254                         TWL6030_CFG_STATE_OFF);
 255
 256         return ret;
 257 }
 258
 259 static int twl4030reg_get_status(struct regulator_dev *rdev)
 260 {
 261         int     state = twlreg_grp(rdev);
 262
 263         if (state < 0)
 264                 return state;
 265         state &= 0x0f;
 266
 267         /* assume state != WARM_RESET; we'd not be running...  */
 268         if (!state)
 269                 return REGULATOR_STATUS_OFF;
 270         return (state & BIT(3))
 271                 ? REGULATOR_STATUS_NORMAL
 272                 : REGULATOR_STATUS_STANDBY;
 273 }
 274
 275 static int twl6030reg_get_status(struct regulator_dev *rdev)
 276 {
 277         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 278         int                     val;
 279
 280         val = twlreg_grp(rdev);
 281         if (val < 0)
 282                 return val;
 283
 284         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 285
 286         switch (TWL6030_CFG_STATE_APP(val)) {
 287         case TWL6030_CFG_STATE_ON:
 288                 return REGULATOR_STATUS_NORMAL;
 289
 290         case TWL6030_CFG_STATE_SLEEP:
 291                 return REGULATOR_STATUS_STANDBY;
 292
 293         case TWL6030_CFG_STATE_OFF:
 294         case TWL6030_CFG_STATE_OFF2:
 295         default:
 296                 break;
 297         }
 298
 299         return REGULATOR_STATUS_OFF;
 300 }
 301
 302 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 303 {
 304         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 305         unsigned                message;
 306         int                     status;
 307
 308         /* We can only set the mode through state machine commands... */
 309         switch (mode) {
 310         case REGULATOR_MODE_NORMAL:
 311                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
 312                 break;
 313         case REGULATOR_MODE_STANDBY:
 314                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
 315                 break;
 316         default:
 317                 return -EINVAL;
 318         }
 319
 320         /* Ensure the resource is associated with some group */
 321         status = twlreg_grp(rdev);
 322         if (status < 0)
 323                 return status;
 324         if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
 325                 return -EACCES;
 326
 327         status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
 328                         message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
 329         if (status < 0)
 330                 return status;
 331
 332         return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
 333                         message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
 334 }
 335
 336 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 337 {
 338         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 339         int grp = 0;
 340         int val;
 341
 342         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 343                 grp = twlreg_grp(rdev);
 344
 345         if (grp < 0)
 346                 return grp;
 347
 348         /* Compose the state register settings */
 349         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
 350         /* We can only set the mode through state machine commands... */
 351         switch (mode) {
 352         case REGULATOR_MODE_NORMAL:
 353                 val |= TWL6030_CFG_STATE_ON;
 354                 break;
 355         case REGULATOR_MODE_STANDBY:
 356                 val |= TWL6030_CFG_STATE_SLEEP;
 357                 break;
 358
 359         default:
 360                 return -EINVAL;
 361         }
 362
 363         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
 364 }
 365
 366 /*----------------------------------------------------------------------*/
 367
 368 /*
 369  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
 370  * select field in its control register.   We use tables indexed by VSEL
 371  * to record voltages in milliVolts.  (Accuracy is about three percent.)
 372  *
 373  * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
 374  * currently handled by listing two slightly different VAUX2 regulators,
 375  * only one of which will be configured.
 376  *
 377  * VSEL values documented as "TI cannot support these values" are flagged
 378  * in these tables as UNSUP() values; we normally won't assign them.
 379  *
 380  * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
 381  * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
 382  */
 383 #define UNSUP_MASK      0x8000
 384
 385 #define UNSUP(x)        (UNSUP_MASK | (x))
 386 #define IS_UNSUP(info, x)                       \
 387         ((UNSUP_MASK & (x)) &&                  \
 388          !((info)->features & TWL4030_ALLOW_UNSUPPORTED))
 389 #define LDO_MV(x)       (~UNSUP_MASK & (x))
 390
 391
 392 static const u16 VAUX1_VSEL_table[] = {
 393         UNSUP(1500), UNSUP(1800), 2500, 2800,
 394         3000, 3000, 3000, 3000,
 395 };
 396 static const u16 VAUX2_4030_VSEL_table[] = {
 397         UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
 398         1500, 1800, UNSUP(1850), 2500,
 399         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
 400         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
 401 };
 402 static const u16 VAUX2_VSEL_table[] = {
 403         1700, 1700, 1900, 1300,
 404         1500, 1800, 2000, 2500,
 405         2100, 2800, 2200, 2300,
 406         2400, 2400, 2400, 2400,
 407 };
 408 static const u16 VAUX3_VSEL_table[] = {
 409         1500, 1800, 2500, 2800,
 410         3000, 3000, 3000, 3000,
 411 };
 412 static const u16 VAUX4_VSEL_table[] = {
 413         700, 1000, 1200, UNSUP(1300),
 414         1500, 1800, UNSUP(1850), 2500,
 415         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
 416         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
 417 };
 418 static const u16 VMMC1_VSEL_table[] = {
 419         1850, 2850, 3000, 3150,
 420 };
 421 static const u16 VMMC2_VSEL_table[] = {
 422         UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
 423         UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
 424         2600, 2800, 2850, 3000,
 425         3150, 3150, 3150, 3150,
 426 };
 427 static const u16 VPLL1_VSEL_table[] = {
 428         1000, 1200, 1300, 1800,
 429         UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
 430 };
 431 static const u16 VPLL2_VSEL_table[] = {
 432         700, 1000, 1200, 1300,
 433         UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
 434         UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
 435         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
 436 };
 437 static const u16 VSIM_VSEL_table[] = {
 438         UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
 439         2800, 3000, 3000, 3000,
 440 };
 441 static const u16 VDAC_VSEL_table[] = {
 442         1200, 1300, 1800, 1800,
 443 };
 444 static const u16 VIO_VSEL_table[] = {
 445         1800, 1850,
 446 };
 447 static const u16 VINTANA2_VSEL_table[] = {
 448         2500, 2750,
 449 };
 450
 451 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
 452 {
 453         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 454         int                     mV = info->table[index];
 455
 456         return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000);
 457 }
 458
 459 static int
 460 twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 461 {
 462         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 463
 464         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
 465                             selector);
 466 }
 467
 468 static int twl4030ldo_get_voltage_sel(struct regulator_dev *rdev)
 469 {
 470         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 471         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
 472
 473         if (vsel < 0)
 474                 return vsel;
 475
 476         vsel &= info->table_len - 1;
 477         return vsel;
 478 }
 479
 480 static struct regulator_ops twl4030ldo_ops = {
 481         .list_voltage   = twl4030ldo_list_voltage,
 482
 483         .set_voltage_sel = twl4030ldo_set_voltage_sel,
 484         .get_voltage_sel = twl4030ldo_get_voltage_sel,
 485
 486         .enable         = twl4030reg_enable,
 487         .disable        = twl4030reg_disable,
 488         .is_enabled     = twl4030reg_is_enabled,
 489
 490         .set_mode       = twl4030reg_set_mode,
 491
 492         .get_status     = twl4030reg_get_status,
 493 };
 494
 495 static int
 496 twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
 497                         unsigned *selector)
 498 {
 499         struct twlreg_info *info = rdev_get_drvdata(rdev);
 500         int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 501
 502         if (info->set_voltage) {
 503                 return info->set_voltage(info->data, min_uV);
 504         } else {
 505                 twlreg_write(info, TWL_MODULE_PM_RECEIVER,
 506                         VREG_VOLTAGE_SMPS_4030, vsel);
 507         }
 508
 509         return 0;
 510 }
 511
 512 static int twl4030smps_get_voltage(struct regulator_dev *rdev)
 513 {
 514         struct twlreg_info *info = rdev_get_drvdata(rdev);
 515         int vsel;
 516
 517         if (info->get_voltage)
 518                 return info->get_voltage(info->data);
 519
 520         vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
 521                 VREG_VOLTAGE_SMPS_4030);
 522
 523         return vsel * 12500 + 600000;
 524 }
 525
 526 static struct regulator_ops twl4030smps_ops = {
 527         .set_voltage    = twl4030smps_set_voltage,
 528         .get_voltage    = twl4030smps_get_voltage,
 529 };
 530
 531 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
 532         int max_uV, unsigned *selector)
 533 {
 534         struct twlreg_info *info = rdev_get_drvdata(rdev);
 535
 536         if (info->set_voltage)
 537                 return info->set_voltage(info->data, min_uV);
 538
 539         return -ENODEV;
 540 }
 541
 542 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
 543 {
 544         struct twlreg_info *info = rdev_get_drvdata(rdev);
 545
 546         if (info->get_voltage)
 547                 return info->get_voltage(info->data);
 548
 549         return -ENODEV;
 550 }
 551
 552 static struct regulator_ops twl6030coresmps_ops = {
 553         .set_voltage    = twl6030coresmps_set_voltage,
 554         .get_voltage    = twl6030coresmps_get_voltage,
 555 };
 556
 557 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
 558 {
 559         struct twlreg_info *info = rdev_get_drvdata(rdev);
 560
 561         switch (sel) {
 562         case 0:
 563                 return 0;
 564         case 1 ... 24:
 565                 /* Linear mapping from 00000001 to 00011000:
 566                  * Absolute voltage value = 1.0 V + 0.1 V × (sel – 00000001)
 567                  */
 568                 return (info->min_mV + 100 * (sel - 1)) * 1000;
 569         case 25 ... 30:
 570                 return -EINVAL;
 571         case 31:
 572                 return 2750000;
 573         default:
 574                 return -EINVAL;
 575         }
 576 }
 577
 578 static int
 579 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 580 {
 581         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 582
 583         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
 584                             selector);
 585 }
 586
 587 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
 588 {
 589         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 590         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
 591
 592         return vsel;
 593 }
 594
 595 static struct regulator_ops twl6030ldo_ops = {
 596         .list_voltage   = twl6030ldo_list_voltage,
 597
 598         .set_voltage_sel = twl6030ldo_set_voltage_sel,
 599         .get_voltage_sel = twl6030ldo_get_voltage_sel,
 600
 601         .enable         = twl6030reg_enable,
 602         .disable        = twl6030reg_disable,
 603         .is_enabled     = twl6030reg_is_enabled,
 604
 605         .set_mode       = twl6030reg_set_mode,
 606
 607         .get_status     = twl6030reg_get_status,
 608 };
 609
 610 /*----------------------------------------------------------------------*/
 611
 612 static struct regulator_ops twl4030fixed_ops = {
 613         .list_voltage   = regulator_list_voltage_linear,
 614
 615         .enable         = twl4030reg_enable,
 616         .disable        = twl4030reg_disable,
 617         .is_enabled     = twl4030reg_is_enabled,
 618
 619         .set_mode       = twl4030reg_set_mode,
 620
 621         .get_status     = twl4030reg_get_status,
 622 };
 623
 624 static struct regulator_ops twl6030fixed_ops = {
 625         .list_voltage   = regulator_list_voltage_linear,
 626
 627         .enable         = twl6030reg_enable,
 628         .disable        = twl6030reg_disable,
 629         .is_enabled     = twl6030reg_is_enabled,
 630
 631         .set_mode       = twl6030reg_set_mode,
 632
 633         .get_status     = twl6030reg_get_status,
 634 };
 635
 636 /*
 637  * SMPS status and control
 638  */
 639
 640 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
 641 {
 642         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 643
 644         int voltage = 0;
 645
 646         switch (info->flags) {
 647         case SMPS_OFFSET_EN:
 648                 voltage = 100000;
 649                 /* fall through */
 650         case 0:
 651                 switch (index) {
 652                 case 0:
 653                         voltage = 0;
 654                         break;
 655                 case 58:
 656                         voltage = 1350 * 1000;
 657                         break;
 658                 case 59:
 659                         voltage = 1500 * 1000;
 660                         break;
 661                 case 60:
 662                         voltage = 1800 * 1000;
 663                         break;
 664                 case 61:
 665                         voltage = 1900 * 1000;
 666                         break;
 667                 case 62:
 668                         voltage = 2100 * 1000;
 669                         break;
 670                 default:
 671                         voltage += (600000 + (12500 * (index - 1)));
 672                 }
 673                 break;
 674         case SMPS_EXTENDED_EN:
 675                 switch (index) {
 676                 case 0:
 677                         voltage = 0;
 678                         break;
 679                 case 58:
 680                         voltage = 2084 * 1000;
 681                         break;
 682                 case 59:
 683                         voltage = 2315 * 1000;
 684                         break;
 685                 case 60:
 686                         voltage = 2778 * 1000;
 687                         break;
 688                 case 61:
 689                         voltage = 2932 * 1000;
 690                         break;
 691                 case 62:
 692                         voltage = 3241 * 1000;
 693                         break;
 694                 default:
 695                         voltage = (1852000 + (38600 * (index - 1)));
 696                 }
 697                 break;
 698         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
 699                 switch (index) {
 700                 case 0:
 701                         voltage = 0;
 702                         break;
 703                 case 58:
 704                         voltage = 4167 * 1000;
 705                         break;
 706                 case 59:
 707                         voltage = 2315 * 1000;
 708                         break;
 709                 case 60:
 710                         voltage = 2778 * 1000;
 711                         break;
 712                 case 61:
 713                         voltage = 2932 * 1000;
 714                         break;
 715                 case 62:
 716                         voltage = 3241 * 1000;
 717                         break;
 718                 default:
 719                         voltage = (2161000 + (38600 * (index - 1)));
 720                 }
 721                 break;
 722         }
 723
 724         return voltage;
 725 }
 726
 727 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
 728                                    int max_uV)
 729 {
 730         struct twlreg_info *info = rdev_get_drvdata(rdev);
 731         int vsel = 0;
 732
 733         switch (info->flags) {
 734         case 0:
 735                 if (min_uV == 0)
 736                         vsel = 0;
 737                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
 738                         vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 739                         vsel++;
 740                 }
 741                 /* Values 1..57 for vsel are linear and can be calculated
 742                  * values 58..62 are non linear.
 743                  */
 744                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 745                         vsel = 62;
 746                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 747                         vsel = 61;
 748                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 749                         vsel = 60;
 750                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 751                         vsel = 59;
 752                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
 753                         vsel = 58;
 754                 else
 755                         return -EINVAL;
 756                 break;
 757         case SMPS_OFFSET_EN:
 758                 if (min_uV == 0)
 759                         vsel = 0;
 760                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
 761                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
 762                         vsel++;
 763                 }
 764                 /* Values 1..57 for vsel are linear and can be calculated
 765                  * values 58..62 are non linear.
 766                  */
 767                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 768                         vsel = 62;
 769                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 770                         vsel = 61;
 771                 else if ((min_uV > 1350000) && (min_uV <= 1800000))
 772                         vsel = 60;
 773                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 774                         vsel = 59;
 775                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
 776                         vsel = 58;
 777                 else
 778                         return -EINVAL;
 779                 break;
 780         case SMPS_EXTENDED_EN:
 781                 if (min_uV == 0) {
 782                         vsel = 0;
 783                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
 784                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
 785                         vsel++;
 786                 }
 787                 break;
 788         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
 789                 if (min_uV == 0) {
 790                         vsel = 0;
 791                 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
 792                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
 793                         vsel++;
 794                 }
 795                 break;
 796         }
 797
 798         return vsel;
 799 }
 800
 801 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
 802                                        unsigned int selector)
 803 {
 804         struct twlreg_info *info = rdev_get_drvdata(rdev);
 805
 806         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
 807                             selector);
 808 }
 809
 810 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
 811 {
 812         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 813
 814         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
 815 }
 816
 817 static struct regulator_ops twlsmps_ops = {
 818         .list_voltage           = twl6030smps_list_voltage,
 819         .map_voltage            = twl6030smps_map_voltage,
 820
 821         .set_voltage_sel        = twl6030smps_set_voltage_sel,
 822         .get_voltage_sel        = twl6030smps_get_voltage_sel,
 823
 824         .enable                 = twl6030reg_enable,
 825         .disable                = twl6030reg_disable,
 826         .is_enabled             = twl6030reg_is_enabled,
 827
 828         .set_mode               = twl6030reg_set_mode,
 829
 830         .get_status             = twl6030reg_get_status,
 831 };
 832
 833 /*----------------------------------------------------------------------*/
 834
 835 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
 836                         remap_conf) \
 837                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
 838                         remap_conf, TWL4030, twl4030fixed_ops)
 839 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
 840                 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
 841                         0x0, TWL6030, twl6030fixed_ops)
 842
 843 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
 844 static const struct twlreg_info TWL4030_INFO_##label = { \
 845         .base = offset, \
 846         .id = num, \
 847         .table_len = ARRAY_SIZE(label##_VSEL_table), \
 848         .table = label##_VSEL_table, \
 849         .remap = remap_conf, \
 850         .desc = { \
 851                 .name = #label, \
 852                 .id = TWL4030_REG_##label, \
 853                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
 854                 .ops = &twl4030ldo_ops, \
 855                 .type = REGULATOR_VOLTAGE, \
 856                 .owner = THIS_MODULE, \
 857                 .enable_time = turnon_delay, \
 858                 }, \
 859         }
 860
 861 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
 862 static const struct twlreg_info TWL4030_INFO_##label = { \
 863         .base = offset, \
 864         .id = num, \
 865         .remap = remap_conf, \
 866         .desc = { \
 867                 .name = #label, \
 868                 .id = TWL4030_REG_##label, \
 869                 .ops = &twl4030smps_ops, \
 870                 .type = REGULATOR_VOLTAGE, \
 871                 .owner = THIS_MODULE, \
 872                 .enable_time = turnon_delay, \
 873                 }, \
 874         }
 875
 876 #define TWL6030_ADJUSTABLE_SMPS(label) \
 877 static const struct twlreg_info TWL6030_INFO_##label = { \
 878         .desc = { \
 879                 .name = #label, \
 880                 .id = TWL6030_REG_##label, \
 881                 .ops = &twl6030coresmps_ops, \
 882                 .type = REGULATOR_VOLTAGE, \
 883                 .owner = THIS_MODULE, \
 884                 }, \
 885         }
 886
 887 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
 888 static const struct twlreg_info TWL6030_INFO_##label = { \
 889         .base = offset, \
 890         .min_mV = min_mVolts, \
 891         .max_mV = max_mVolts, \
 892         .desc = { \
 893                 .name = #label, \
 894                 .id = TWL6030_REG_##label, \
 895                 .n_voltages = 32, \
 896                 .ops = &twl6030ldo_ops, \
 897                 .type = REGULATOR_VOLTAGE, \
 898                 .owner = THIS_MODULE, \
 899                 }, \
 900         }
 901
 902 #define TWL6032_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
 903 static const struct twlreg_info TWL6032_INFO_##label = { \
 904         .base = offset, \
 905         .min_mV = min_mVolts, \
 906         .max_mV = max_mVolts, \
 907         .desc = { \
 908                 .name = #label, \
 909                 .id = TWL6032_REG_##label, \
 910                 .n_voltages = 32, \
 911                 .ops = &twl6030ldo_ops, \
 912                 .type = REGULATOR_VOLTAGE, \
 913                 .owner = THIS_MODULE, \
 914                 }, \
 915         }
 916
 917 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
 918                 family, operations) \
 919 static const struct twlreg_info TWLFIXED_INFO_##label = { \
 920         .base = offset, \
 921         .id = num, \
 922         .min_mV = mVolts, \
 923         .remap = remap_conf, \
 924         .desc = { \
 925                 .name = #label, \
 926                 .id = family##_REG_##label, \
 927                 .n_voltages = 1, \
 928                 .ops = &operations, \
 929                 .type = REGULATOR_VOLTAGE, \
 930                 .owner = THIS_MODULE, \
 931                 .min_uV = mVolts * 1000, \
 932                 .enable_time = turnon_delay, \
 933                 }, \
 934         }
 935
 936 #define TWL6032_ADJUSTABLE_SMPS(label, offset) \
 937 static const struct twlreg_info TWLSMPS_INFO_##label = { \
 938         .base = offset, \
 939         .min_mV = 600, \
 940         .max_mV = 2100, \
 941         .desc = { \
 942                 .name = #label, \
 943                 .id = TWL6032_REG_##label, \
 944                 .n_voltages = 63, \
 945                 .ops = &twlsmps_ops, \
 946                 .type = REGULATOR_VOLTAGE, \
 947                 .owner = THIS_MODULE, \
 948                 }, \
 949         }
 950
 951 /*
 952  * We list regulators here if systems need some level of
 953  * software control over them after boot.
 954  */
 955 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
 956 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
 957 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
 958 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
 959 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
 960 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
 961 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
 962 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
 963 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
 964 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
 965 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
 966 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
 967 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
 968 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
 969 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
 970 /* VUSBCP is managed *only* by the USB subchip */
 971 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
 972 /* Turnon-delay and remap configuration values for 6030 are not
 973    verified since the specification is not public */
 974 TWL6030_ADJUSTABLE_SMPS(VDD1);
 975 TWL6030_ADJUSTABLE_SMPS(VDD2);
 976 TWL6030_ADJUSTABLE_SMPS(VDD3);
 977 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
 978 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
 979 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
 980 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
 981 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
 982 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
 983 /* 6025 are renamed compared to 6030 versions */
 984 TWL6032_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
 985 TWL6032_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
 986 TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
 987 TWL6032_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
 988 TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
 989 TWL6032_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
 990 TWL6032_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
 991 TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
 992 TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
 993 TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08);
 994 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
 995 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
 996 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
 997 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
 998 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
 999 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1000 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1001 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1002 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1003 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1004 TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
1005 TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
1006 TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
1007
1008 static u8 twl_get_smps_offset(void)
1009 {
1010         u8 value;
1011
1012         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1013                         TWL6030_SMPS_OFFSET);
1014         return value;
1015 }
1016
1017 static u8 twl_get_smps_mult(void)
1018 {
1019         u8 value;
1020
1021         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1022                         TWL6030_SMPS_MULT);
1023         return value;
1024 }
1025
1026 #define TWL_OF_MATCH(comp, family, label) \
1027         { \
1028                 .compatible = comp, \
1029                 .data = &family##_INFO_##label, \
1030         }
1031
1032 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1033 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1034 #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
1035 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1036 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1037
1038 static const struct of_device_id twl_of_match[] = {
1039         TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1040         TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1041         TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1042         TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1043         TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1044         TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1045         TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1046         TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1047         TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1048         TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1049         TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1050         TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1051         TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1052         TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1053         TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1054         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1055         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1056         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1057         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1058         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1059         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1060         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1061         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1062         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1063         TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
1064         TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
1065         TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
1066         TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
1067         TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
1068         TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
1069         TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
1070         TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
1071         TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
1072         TWLFIXED_OF_MATCH("ti,twl4030-vintana1", VINTANA1),
1073         TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1074         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1075         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1076         TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1077         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1078         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1079         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1080         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1081         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1082         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1083         TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
1084         TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
1085         TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
1086         {},
1087 };
1088 MODULE_DEVICE_TABLE(of, twl_of_match);
1089
1090 static int twlreg_probe(struct platform_device *pdev)
1091 {
1092         int                             i, id;
1093         struct twlreg_info              *info;
1094         const struct twlreg_info        *template;
1095         struct regulator_init_data      *initdata;
1096         struct regulation_constraints   *c;
1097         struct regulator_dev            *rdev;
1098         struct twl_regulator_driver_data        *drvdata;
1099         const struct of_device_id       *match;
1100         struct regulator_config         config = { };
1101
1102         match = of_match_device(twl_of_match, &pdev->dev);
1103         if (match) {
1104                 template = match->data;
1105                 id = template->desc.id;
1106                 initdata = of_get_regulator_init_data(&pdev->dev,
1107                                                       pdev->dev.of_node,
1108                                                       &template->desc);
1109                 drvdata = NULL;
1110         } else {
1111                 id = pdev->id;
1112                 initdata = dev_get_platdata(&pdev->dev);
1113                 for (i = 0, template = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1114                         template = twl_of_match[i].data;
1115                         if (template && template->desc.id == id)
1116                                 break;
1117                 }
1118                 if (i == ARRAY_SIZE(twl_of_match))
1119                         return -ENODEV;
1120
1121                 drvdata = initdata->driver_data;
1122                 if (!drvdata)
1123                         return -EINVAL;
1124         }
1125
1126         if (!template)
1127                 return -ENODEV;
1128
1129         if (!initdata)
1130                 return -EINVAL;
1131
1132         info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
1133         if (!info)
1134                 return -ENOMEM;
1135
1136         if (drvdata) {
1137                 /* copy the driver data into regulator data */
1138                 info->features = drvdata->features;
1139                 info->data = drvdata->data;
1140                 info->set_voltage = drvdata->set_voltage;
1141                 info->get_voltage = drvdata->get_voltage;
1142         }
1143
1144         /* Constrain board-specific capabilities according to what
1145          * this driver and the chip itself can actually do.
1146          */
1147         c = &initdata->constraints;
1148         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1149         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1150                                 | REGULATOR_CHANGE_MODE
1151                                 | REGULATOR_CHANGE_STATUS;
1152         switch (id) {
1153         case TWL4030_REG_VIO:
1154         case TWL4030_REG_VDD1:
1155         case TWL4030_REG_VDD2:
1156         case TWL4030_REG_VPLL1:
1157         case TWL4030_REG_VINTANA1:
1158         case TWL4030_REG_VINTANA2:
1159         case TWL4030_REG_VINTDIG:
1160                 c->always_on = true;
1161                 break;
1162         default:
1163                 break;
1164         }
1165
1166         switch (id) {
1167         case TWL6032_REG_SMPS3:
1168                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1169                         info->flags |= SMPS_EXTENDED_EN;
1170                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1171                         info->flags |= SMPS_OFFSET_EN;
1172                 break;
1173         case TWL6032_REG_SMPS4:
1174                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1175                         info->flags |= SMPS_EXTENDED_EN;
1176                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1177                         info->flags |= SMPS_OFFSET_EN;
1178                 break;
1179         case TWL6032_REG_VIO:
1180                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1181                         info->flags |= SMPS_EXTENDED_EN;
1182                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1183                         info->flags |= SMPS_OFFSET_EN;
1184                 break;
1185         }
1186
1187         config.dev = &pdev->dev;
1188         config.init_data = initdata;
1189         config.driver_data = info;
1190         config.of_node = pdev->dev.of_node;
1191
1192         rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
1193         if (IS_ERR(rdev)) {
1194                 dev_err(&pdev->dev, "can't register %s, %ld\n",
1195                                 info->desc.name, PTR_ERR(rdev));
1196                 return PTR_ERR(rdev);
1197         }
1198         platform_set_drvdata(pdev, rdev);
1199
1200         if (twl_class_is_4030())
1201                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1202                                                 info->remap);
1203
1204         /* NOTE:  many regulators support short-circuit IRQs (presentable
1205          * as REGULATOR_OVER_CURRENT notifications?) configured via:
1206          *  - SC_CONFIG
1207          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1208          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1209          *  - IT_CONFIG
1210          */
1211
1212         return 0;
1213 }
1214
1215 MODULE_ALIAS("platform:twl_reg");
1216
1217 static struct platform_driver twlreg_driver = {
1218         .probe          = twlreg_probe,
1219         /* NOTE: short name, to work around driver model truncation of
1220          * "twl_regulator.12" (and friends) to "twl_regulator.1".
1221          */
1222         .driver  = {
1223                 .name  = "twl_reg",
1224                 .of_match_table = of_match_ptr(twl_of_match),
1225         },
1226 };
1227
1228 static int __init twlreg_init(void)
1229 {
1230         return platform_driver_register(&twlreg_driver);
1231 }
1232 subsys_initcall(twlreg_init);
1233
1234 static void __exit twlreg_exit(void)
1235 {
1236         platform_driver_unregister(&twlreg_driver);
1237 }
1238 module_exit(twlreg_exit)
1239
1240 MODULE_DESCRIPTION("TWL regulator driver");
1241 MODULE_LICENSE("GPL");