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/init.h>
  14 #include <linux/err.h>
  15 #include <linux/delay.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/of.h>
  18 #include <linux/of_device.h>
  19 #include <linux/regulator/driver.h>
  20 #include <linux/regulator/machine.h>
  21 #include <linux/regulator/of_regulator.h>
  22 #include <linux/i2c/twl.h>
  23
  24
  25 /*
  26  * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
  27  * USB OTG transceiver, an RTC, ADC, PWM, and lots more.  Some versions
  28  * include an audio codec, battery charger, and more voltage regulators.
  29  * These chips are often used in OMAP-based systems.
  30  *
  31  * This driver implements software-based resource control for various
  32  * voltage regulators.  This is usually augmented with state machine
  33  * based control.
  34  */
  35
  36 struct twlreg_info {
  37         /* start of regulator's PM_RECEIVER control register bank */
  38         u8                      base;
  39
  40         /* twl resource ID, for resource control state machine */
  41         u8                      id;
  42
  43         /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
  44         u8                      table_len;
  45         const u16               *table;
  46
  47         /* regulator specific turn-on delay */
  48         u16                     delay;
  49
  50         /* State REMAP default configuration */
  51         u8                      remap;
  52
  53         /* chip constraints on regulator behavior */
  54         u16                     min_mV;
  55         u16                     max_mV;
  56
  57         u8                      flags;
  58
  59         /* used by regulator core */
  60         struct regulator_desc   desc;
  61
  62         /* chip specific features */
  63         unsigned long           features;
  64
  65         /*
  66          * optional override functions for voltage set/get
  67          * these are currently only used for SMPS regulators
  68          */
  69         int                     (*get_voltage)(void *data);
  70         int                     (*set_voltage)(void *data, int target_uV);
  71
  72         /* data passed from board for external get/set voltage */
  73         void                    *data;
  74 };
  75
  76
  77 /* LDO control registers ... offset is from the base of its register bank.
  78  * The first three registers of all power resource banks help hardware to
  79  * manage the various resource groups.
  80  */
  81 /* Common offset in TWL4030/6030 */
  82 #define VREG_GRP                0
  83 /* TWL4030 register offsets */
  84 #define VREG_TYPE               1
  85 #define VREG_REMAP              2
  86 #define VREG_DEDICATED          3       /* LDO control */
  87 #define VREG_VOLTAGE_SMPS_4030  9
  88 /* TWL6030 register offsets */
  89 #define VREG_TRANS              1
  90 #define VREG_STATE              2
  91 #define VREG_VOLTAGE            3
  92 #define VREG_VOLTAGE_SMPS       4
  93 /* TWL6030 Misc register offsets */
  94 #define VREG_BC_ALL             1
  95 #define VREG_BC_REF             2
  96 #define VREG_BC_PROC            3
  97 #define VREG_BC_CLK_RST         4
  98
  99 /* TWL6030 LDO register values for CFG_STATE */
 100 #define TWL6030_CFG_STATE_OFF   0x00
 101 #define TWL6030_CFG_STATE_ON    0x01
 102 #define TWL6030_CFG_STATE_OFF2  0x02
 103 #define TWL6030_CFG_STATE_SLEEP 0x03
 104 #define TWL6030_CFG_STATE_GRP_SHIFT     5
 105 #define TWL6030_CFG_STATE_APP_SHIFT     2
 106 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
 107 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
 108                                                 TWL6030_CFG_STATE_APP_SHIFT)
 109
 110 /* Flags for SMPS Voltage reading */
 111 #define SMPS_OFFSET_EN          BIT(0)
 112 #define SMPS_EXTENDED_EN        BIT(1)
 113
 114 /* twl6025 SMPS EPROM values */
 115 #define TWL6030_SMPS_OFFSET             0xB0
 116 #define TWL6030_SMPS_MULT               0xB3
 117 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
 118 #define SMPS_MULTOFFSET_VIO     BIT(1)
 119 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
 120
 121 static inline int
 122 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
 123 {
 124         u8 value;
 125         int status;
 126
 127         status = twl_i2c_read_u8(slave_subgp,
 128                         &value, info->base + offset);
 129         return (status < 0) ? status : value;
 130 }
 131
 132 static inline int
 133 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
 134                                                  u8 value)
 135 {
 136         return twl_i2c_write_u8(slave_subgp,
 137                         value, info->base + offset);
 138 }
 139
 140 /*----------------------------------------------------------------------*/
 141
 142 /* generic power resource operations, which work on all regulators */
 143
 144 static int twlreg_grp(struct regulator_dev *rdev)
 145 {
 146         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
 147                                                                  VREG_GRP);
 148 }
 149
 150 /*
 151  * Enable/disable regulators by joining/leaving the P1 (processor) group.
 152  * We assume nobody else is updating the DEV_GRP registers.
 153  */
 154 /* definition for 4030 family */
 155 #define P3_GRP_4030     BIT(7)          /* "peripherals" */
 156 #define P2_GRP_4030     BIT(6)          /* secondary processor, modem, etc */
 157 #define P1_GRP_4030     BIT(5)          /* CPU/Linux */
 158 /* definition for 6030 family */
 159 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
 160 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
 161 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
 162
 163 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
 164 {
 165         int     state = twlreg_grp(rdev);
 166
 167         if (state < 0)
 168                 return state;
 169
 170         return state & P1_GRP_4030;
 171 }
 172
 173 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
 174 {
 175         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 176         int                     grp = 0, val;
 177
 178         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
 179                 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
 180         if (grp < 0)
 181                 return grp;
 182
 183         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
 184                 grp &= P1_GRP_6030;
 185         else
 186                 grp = 1;
 187
 188         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 189         val = TWL6030_CFG_STATE_APP(val);
 190
 191         return grp && (val == TWL6030_CFG_STATE_ON);
 192 }
 193
 194 static int twl4030reg_enable(struct regulator_dev *rdev)
 195 {
 196         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 197         int                     grp;
 198         int                     ret;
 199
 200         grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
 201         if (grp < 0)
 202                 return grp;
 203
 204         grp |= P1_GRP_4030;
 205
 206         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
 207
 208         udelay(info->delay);
 209
 210         return ret;
 211 }
 212
 213 static int twl6030reg_enable(struct regulator_dev *rdev)
 214 {
 215         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 216         int                     grp = 0;
 217         int                     ret;
 218
 219         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
 220                 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
 221         if (grp < 0)
 222                 return grp;
 223
 224         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 225                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
 226                         TWL6030_CFG_STATE_ON);
 227
 228         udelay(info->delay);
 229
 230         return ret;
 231 }
 232
 233 static int twl4030reg_disable(struct regulator_dev *rdev)
 234 {
 235         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 236         int                     grp;
 237         int                     ret;
 238
 239         grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
 240         if (grp < 0)
 241                 return grp;
 242
 243         grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
 244
 245         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
 246
 247         return ret;
 248 }
 249
 250 static int twl6030reg_disable(struct regulator_dev *rdev)
 251 {
 252         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 253         int                     grp = 0;
 254         int                     ret;
 255
 256         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
 257                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
 258
 259         /* For 6030, set the off state for all grps enabled */
 260         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 261                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
 262                         TWL6030_CFG_STATE_OFF);
 263
 264         return ret;
 265 }
 266
 267 static int twl4030reg_get_status(struct regulator_dev *rdev)
 268 {
 269         int     state = twlreg_grp(rdev);
 270
 271         if (state < 0)
 272                 return state;
 273         state &= 0x0f;
 274
 275         /* assume state != WARM_RESET; we'd not be running...  */
 276         if (!state)
 277                 return REGULATOR_STATUS_OFF;
 278         return (state & BIT(3))
 279                 ? REGULATOR_STATUS_NORMAL
 280                 : REGULATOR_STATUS_STANDBY;
 281 }
 282
 283 static int twl6030reg_get_status(struct regulator_dev *rdev)
 284 {
 285         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 286         int                     val;
 287
 288         val = twlreg_grp(rdev);
 289         if (val < 0)
 290                 return val;
 291
 292         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 293
 294         switch (TWL6030_CFG_STATE_APP(val)) {
 295         case TWL6030_CFG_STATE_ON:
 296                 return REGULATOR_STATUS_NORMAL;
 297
 298         case TWL6030_CFG_STATE_SLEEP:
 299                 return REGULATOR_STATUS_STANDBY;
 300
 301         case TWL6030_CFG_STATE_OFF:
 302         case TWL6030_CFG_STATE_OFF2:
 303         default:
 304                 break;
 305         }
 306
 307         return REGULATOR_STATUS_OFF;
 308 }
 309
 310 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 311 {
 312         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 313         unsigned                message;
 314         int                     status;
 315
 316         /* We can only set the mode through state machine commands... */
 317         switch (mode) {
 318         case REGULATOR_MODE_NORMAL:
 319                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
 320                 break;
 321         case REGULATOR_MODE_STANDBY:
 322                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
 323                 break;
 324         default:
 325                 return -EINVAL;
 326         }
 327
 328         /* Ensure the resource is associated with some group */
 329         status = twlreg_grp(rdev);
 330         if (status < 0)
 331                 return status;
 332         if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
 333                 return -EACCES;
 334
 335         status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
 336                         message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
 337         if (status < 0)
 338                 return status;
 339
 340         return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
 341                         message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
 342 }
 343
 344 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 345 {
 346         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 347         int grp = 0;
 348         int val;
 349
 350         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
 351                 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
 352
 353         if (grp < 0)
 354                 return grp;
 355
 356         /* Compose the state register settings */
 357         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
 358         /* We can only set the mode through state machine commands... */
 359         switch (mode) {
 360         case REGULATOR_MODE_NORMAL:
 361                 val |= TWL6030_CFG_STATE_ON;
 362                 break;
 363         case REGULATOR_MODE_STANDBY:
 364                 val |= TWL6030_CFG_STATE_SLEEP;
 365                 break;
 366
 367         default:
 368                 return -EINVAL;
 369         }
 370
 371         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
 372 }
 373
 374 /*----------------------------------------------------------------------*/
 375
 376 /*
 377  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
 378  * select field in its control register.   We use tables indexed by VSEL
 379  * to record voltages in milliVolts.  (Accuracy is about three percent.)
 380  *
 381  * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
 382  * currently handled by listing two slightly different VAUX2 regulators,
 383  * only one of which will be configured.
 384  *
 385  * VSEL values documented as "TI cannot support these values" are flagged
 386  * in these tables as UNSUP() values; we normally won't assign them.
 387  *
 388  * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
 389  * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
 390  */
 391 #ifdef CONFIG_TWL4030_ALLOW_UNSUPPORTED
 392 #define UNSUP_MASK      0x0000
 393 #else
 394 #define UNSUP_MASK      0x8000
 395 #endif
 396
 397 #define UNSUP(x)        (UNSUP_MASK | (x))
 398 #define IS_UNSUP(x)     (UNSUP_MASK & (x))
 399 #define LDO_MV(x)       (~UNSUP_MASK & (x))
 400
 401
 402 static const u16 VAUX1_VSEL_table[] = {
 403         UNSUP(1500), UNSUP(1800), 2500, 2800,
 404         3000, 3000, 3000, 3000,
 405 };
 406 static const u16 VAUX2_4030_VSEL_table[] = {
 407         UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
 408         1500, 1800, UNSUP(1850), 2500,
 409         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
 410         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
 411 };
 412 static const u16 VAUX2_VSEL_table[] = {
 413         1700, 1700, 1900, 1300,
 414         1500, 1800, 2000, 2500,
 415         2100, 2800, 2200, 2300,
 416         2400, 2400, 2400, 2400,
 417 };
 418 static const u16 VAUX3_VSEL_table[] = {
 419         1500, 1800, 2500, 2800,
 420         3000, 3000, 3000, 3000,
 421 };
 422 static const u16 VAUX4_VSEL_table[] = {
 423         700, 1000, 1200, UNSUP(1300),
 424         1500, 1800, UNSUP(1850), 2500,
 425         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
 426         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
 427 };
 428 static const u16 VMMC1_VSEL_table[] = {
 429         1850, 2850, 3000, 3150,
 430 };
 431 static const u16 VMMC2_VSEL_table[] = {
 432         UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
 433         UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
 434         2600, 2800, 2850, 3000,
 435         3150, 3150, 3150, 3150,
 436 };
 437 static const u16 VPLL1_VSEL_table[] = {
 438         1000, 1200, 1300, 1800,
 439         UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
 440 };
 441 static const u16 VPLL2_VSEL_table[] = {
 442         700, 1000, 1200, 1300,
 443         UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
 444         UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
 445         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
 446 };
 447 static const u16 VSIM_VSEL_table[] = {
 448         UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
 449         2800, 3000, 3000, 3000,
 450 };
 451 static const u16 VDAC_VSEL_table[] = {
 452         1200, 1300, 1800, 1800,
 453 };
 454 static const u16 VDD1_VSEL_table[] = {
 455         800, 1450,
 456 };
 457 static const u16 VDD2_VSEL_table[] = {
 458         800, 1450, 1500,
 459 };
 460 static const u16 VIO_VSEL_table[] = {
 461         1800, 1850,
 462 };
 463 static const u16 VINTANA2_VSEL_table[] = {
 464         2500, 2750,
 465 };
 466
 467 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
 468 {
 469         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 470         int                     mV = info->table[index];
 471
 472         return IS_UNSUP(mV) ? 0 : (LDO_MV(mV) * 1000);
 473 }
 474
 475 static int
 476 twl4030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
 477                        unsigned *selector)
 478 {
 479         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 480         int                     vsel;
 481
 482         for (vsel = 0; vsel < info->table_len; vsel++) {
 483                 int mV = info->table[vsel];
 484                 int uV;
 485
 486                 if (IS_UNSUP(mV))
 487                         continue;
 488                 uV = LDO_MV(mV) * 1000;
 489
 490                 /* REVISIT for VAUX2, first match may not be best/lowest */
 491
 492                 /* use the first in-range value */
 493                 if (min_uV <= uV && uV <= max_uV) {
 494                         *selector = vsel;
 495                         return twlreg_write(info, TWL_MODULE_PM_RECEIVER,
 496                                                         VREG_VOLTAGE, vsel);
 497                 }
 498         }
 499
 500         return -EDOM;
 501 }
 502
 503 static int twl4030ldo_get_voltage(struct regulator_dev *rdev)
 504 {
 505         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 506         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
 507                                                                 VREG_VOLTAGE);
 508
 509         if (vsel < 0)
 510                 return vsel;
 511
 512         vsel &= info->table_len - 1;
 513         return LDO_MV(info->table[vsel]) * 1000;
 514 }
 515
 516 static struct regulator_ops twl4030ldo_ops = {
 517         .list_voltage   = twl4030ldo_list_voltage,
 518
 519         .set_voltage    = twl4030ldo_set_voltage,
 520         .get_voltage    = twl4030ldo_get_voltage,
 521
 522         .enable         = twl4030reg_enable,
 523         .disable        = twl4030reg_disable,
 524         .is_enabled     = twl4030reg_is_enabled,
 525
 526         .set_mode       = twl4030reg_set_mode,
 527
 528         .get_status     = twl4030reg_get_status,
 529 };
 530
 531 static int
 532 twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
 533                         unsigned *selector)
 534 {
 535         struct twlreg_info *info = rdev_get_drvdata(rdev);
 536         int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 537
 538         if (info->set_voltage) {
 539                 return info->set_voltage(info->data, min_uV);
 540         } else {
 541                 twlreg_write(info, TWL_MODULE_PM_RECEIVER,
 542                         VREG_VOLTAGE_SMPS_4030, vsel);
 543         }
 544
 545         return 0;
 546 }
 547
 548 static int twl4030smps_get_voltage(struct regulator_dev *rdev)
 549 {
 550         struct twlreg_info *info = rdev_get_drvdata(rdev);
 551         int vsel;
 552
 553         if (info->get_voltage)
 554                 return info->get_voltage(info->data);
 555
 556         vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
 557                 VREG_VOLTAGE_SMPS_4030);
 558
 559         return vsel * 12500 + 600000;
 560 }
 561
 562 static struct regulator_ops twl4030smps_ops = {
 563         .set_voltage    = twl4030smps_set_voltage,
 564         .get_voltage    = twl4030smps_get_voltage,
 565 };
 566
 567 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
 568         int max_uV, unsigned *selector)
 569 {
 570         struct twlreg_info *info = rdev_get_drvdata(rdev);
 571
 572         if (info->set_voltage)
 573                 return info->set_voltage(info->data, min_uV);
 574
 575         return -ENODEV;
 576 }
 577
 578 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
 579 {
 580         struct twlreg_info *info = rdev_get_drvdata(rdev);
 581
 582         if (info->get_voltage)
 583                 return info->get_voltage(info->data);
 584
 585         return -ENODEV;
 586 }
 587
 588 static struct regulator_ops twl6030coresmps_ops = {
 589         .set_voltage    = twl6030coresmps_set_voltage,
 590         .get_voltage    = twl6030coresmps_get_voltage,
 591 };
 592
 593 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
 594 {
 595         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 596
 597         return ((info->min_mV + (index * 100)) * 1000);
 598 }
 599
 600 static int
 601 twl6030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
 602                        unsigned *selector)
 603 {
 604         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 605         int                     vsel;
 606
 607         if ((min_uV/1000 < info->min_mV) || (max_uV/1000 > info->max_mV))
 608                 return -EDOM;
 609
 610         /*
 611          * Use the below formula to calculate vsel
 612          * mV = 1000mv + 100mv * (vsel - 1)
 613          */
 614         vsel = (min_uV/1000 - 1000)/100 + 1;
 615         *selector = vsel;
 616         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, vsel);
 617
 618 }
 619
 620 static int twl6030ldo_get_voltage(struct regulator_dev *rdev)
 621 {
 622         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 623         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
 624                                                                 VREG_VOLTAGE);
 625
 626         if (vsel < 0)
 627                 return vsel;
 628
 629         /*
 630          * Use the below formula to calculate vsel
 631          * mV = 1000mv + 100mv * (vsel - 1)
 632          */
 633         return (1000 + (100 * (vsel - 1))) * 1000;
 634 }
 635
 636 static struct regulator_ops twl6030ldo_ops = {
 637         .list_voltage   = twl6030ldo_list_voltage,
 638
 639         .set_voltage    = twl6030ldo_set_voltage,
 640         .get_voltage    = twl6030ldo_get_voltage,
 641
 642         .enable         = twl6030reg_enable,
 643         .disable        = twl6030reg_disable,
 644         .is_enabled     = twl6030reg_is_enabled,
 645
 646         .set_mode       = twl6030reg_set_mode,
 647
 648         .get_status     = twl6030reg_get_status,
 649 };
 650
 651 /*----------------------------------------------------------------------*/
 652
 653 /*
 654  * Fixed voltage LDOs don't have a VSEL field to update.
 655  */
 656 static int twlfixed_list_voltage(struct regulator_dev *rdev, unsigned index)
 657 {
 658         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 659
 660         return info->min_mV * 1000;
 661 }
 662
 663 static int twlfixed_get_voltage(struct regulator_dev *rdev)
 664 {
 665         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 666
 667         return info->min_mV * 1000;
 668 }
 669
 670 static struct regulator_ops twl4030fixed_ops = {
 671         .list_voltage   = twlfixed_list_voltage,
 672
 673         .get_voltage    = twlfixed_get_voltage,
 674
 675         .enable         = twl4030reg_enable,
 676         .disable        = twl4030reg_disable,
 677         .is_enabled     = twl4030reg_is_enabled,
 678
 679         .set_mode       = twl4030reg_set_mode,
 680
 681         .get_status     = twl4030reg_get_status,
 682 };
 683
 684 static struct regulator_ops twl6030fixed_ops = {
 685         .list_voltage   = twlfixed_list_voltage,
 686
 687         .get_voltage    = twlfixed_get_voltage,
 688
 689         .enable         = twl6030reg_enable,
 690         .disable        = twl6030reg_disable,
 691         .is_enabled     = twl6030reg_is_enabled,
 692
 693         .set_mode       = twl6030reg_set_mode,
 694
 695         .get_status     = twl6030reg_get_status,
 696 };
 697
 698 static struct regulator_ops twl6030_fixed_resource = {
 699         .enable         = twl6030reg_enable,
 700         .disable        = twl6030reg_disable,
 701         .is_enabled     = twl6030reg_is_enabled,
 702         .get_status     = twl6030reg_get_status,
 703 };
 704
 705 /*
 706  * SMPS status and control
 707  */
 708
 709 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
 710 {
 711         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 712
 713         int voltage = 0;
 714
 715         switch (info->flags) {
 716         case SMPS_OFFSET_EN:
 717                 voltage = 100000;
 718                 /* fall through */
 719         case 0:
 720                 switch (index) {
 721                 case 0:
 722                         voltage = 0;
 723                         break;
 724                 case 58:
 725                         voltage = 1350 * 1000;
 726                         break;
 727                 case 59:
 728                         voltage = 1500 * 1000;
 729                         break;
 730                 case 60:
 731                         voltage = 1800 * 1000;
 732                         break;
 733                 case 61:
 734                         voltage = 1900 * 1000;
 735                         break;
 736                 case 62:
 737                         voltage = 2100 * 1000;
 738                         break;
 739                 default:
 740                         voltage += (600000 + (12500 * (index - 1)));
 741                 }
 742                 break;
 743         case SMPS_EXTENDED_EN:
 744                 switch (index) {
 745                 case 0:
 746                         voltage = 0;
 747                         break;
 748                 case 58:
 749                         voltage = 2084 * 1000;
 750                         break;
 751                 case 59:
 752                         voltage = 2315 * 1000;
 753                         break;
 754                 case 60:
 755                         voltage = 2778 * 1000;
 756                         break;
 757                 case 61:
 758                         voltage = 2932 * 1000;
 759                         break;
 760                 case 62:
 761                         voltage = 3241 * 1000;
 762                         break;
 763                 default:
 764                         voltage = (1852000 + (38600 * (index - 1)));
 765                 }
 766                 break;
 767         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
 768                 switch (index) {
 769                 case 0:
 770                         voltage = 0;
 771                         break;
 772                 case 58:
 773                         voltage = 4167 * 1000;
 774                         break;
 775                 case 59:
 776                         voltage = 2315 * 1000;
 777                         break;
 778                 case 60:
 779                         voltage = 2778 * 1000;
 780                         break;
 781                 case 61:
 782                         voltage = 2932 * 1000;
 783                         break;
 784                 case 62:
 785                         voltage = 3241 * 1000;
 786                         break;
 787                 default:
 788                         voltage = (2161000 + (38600 * (index - 1)));
 789                 }
 790                 break;
 791         }
 792
 793         return voltage;
 794 }
 795
 796 static int
 797 twl6030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
 798                         unsigned int *selector)
 799 {
 800         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 801         int     vsel = 0;
 802
 803         switch (info->flags) {
 804         case 0:
 805                 if (min_uV == 0)
 806                         vsel = 0;
 807                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
 808                         int calc_uV;
 809                         vsel = (min_uV - 600000) / 125;
 810                         if (vsel % 100)
 811                                 vsel += 100;
 812                         vsel /= 100;
 813                         vsel++;
 814                         calc_uV = twl6030smps_list_voltage(rdev, vsel);
 815                         if (calc_uV > max_uV)
 816                                 return -EINVAL;
 817                 }
 818                 /* Values 1..57 for vsel are linear and can be calculated
 819                  * values 58..62 are non linear.
 820                  */
 821                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
 822                         vsel = 62;
 823                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
 824                         vsel = 61;
 825                 else if ((min_uV > 1500000) && (max_uV >= 1800000))
 826                         vsel = 60;
 827                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
 828                         vsel = 59;
 829                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
 830                         vsel = 58;
 831                 else
 832                         return -EINVAL;
 833                 break;
 834         case SMPS_OFFSET_EN:
 835                 if (min_uV == 0)
 836                         vsel = 0;
 837                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
 838                         int calc_uV;
 839                         vsel = (min_uV - 700000) / 125;
 840                         if (vsel % 100)
 841                                 vsel += 100;
 842                         vsel /= 100;
 843                         vsel++;
 844                         calc_uV = twl6030smps_list_voltage(rdev, vsel);
 845                         if (calc_uV > max_uV)
 846                                 return -EINVAL;
 847                 }
 848                 /* Values 1..57 for vsel are linear and can be calculated
 849                  * values 58..62 are non linear.
 850                  */
 851                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
 852                         vsel = 62;
 853                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
 854                         vsel = 61;
 855                 else if ((min_uV > 1350000) && (max_uV >= 1800000))
 856                         vsel = 60;
 857                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
 858                         vsel = 59;
 859                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
 860                         vsel = 58;
 861                 else
 862                         return -EINVAL;
 863                 break;
 864         case SMPS_EXTENDED_EN:
 865                 if (min_uV == 0)
 866                         vsel = 0;
 867                 else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
 868                         vsel = (min_uV - 1852000) / 386;
 869                         if (vsel % 100)
 870                                 vsel += 100;
 871                         vsel /= 100;
 872                         vsel++;
 873                 }
 874                 break;
 875         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
 876                 if (min_uV == 0)
 877                         vsel = 0;
 878                 else if ((min_uV >= 2161000) && (max_uV <= 4321000)) {
 879                         vsel = (min_uV - 2161000) / 386;
 880                         if (vsel % 100)
 881                                 vsel += 100;
 882                         vsel /= 100;
 883                         vsel++;
 884                 }
 885                 break;
 886         }
 887
 888         *selector = vsel;
 889
 890         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
 891                                                         vsel);
 892 }
 893
 894 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
 895 {
 896         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 897
 898         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
 899 }
 900
 901 static struct regulator_ops twlsmps_ops = {
 902         .list_voltage           = twl6030smps_list_voltage,
 903
 904         .set_voltage            = twl6030smps_set_voltage,
 905         .get_voltage_sel        = twl6030smps_get_voltage_sel,
 906
 907         .enable                 = twl6030reg_enable,
 908         .disable                = twl6030reg_disable,
 909         .is_enabled             = twl6030reg_is_enabled,
 910
 911         .set_mode               = twl6030reg_set_mode,
 912
 913         .get_status             = twl6030reg_get_status,
 914 };
 915
 916 /*----------------------------------------------------------------------*/
 917
 918 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
 919                         remap_conf) \
 920                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
 921                         remap_conf, TWL4030, twl4030fixed_ops)
 922 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
 923                 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
 924                         0x0, TWL6030, twl6030fixed_ops)
 925
 926 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
 927 static struct twlreg_info TWL4030_INFO_##label = { \
 928         .base = offset, \
 929         .id = num, \
 930         .table_len = ARRAY_SIZE(label##_VSEL_table), \
 931         .table = label##_VSEL_table, \
 932         .delay = turnon_delay, \
 933         .remap = remap_conf, \
 934         .desc = { \
 935                 .name = #label, \
 936                 .id = TWL4030_REG_##label, \
 937                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
 938                 .ops = &twl4030ldo_ops, \
 939                 .type = REGULATOR_VOLTAGE, \
 940                 .owner = THIS_MODULE, \
 941                 }, \
 942         }
 943
 944 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
 945 static struct twlreg_info TWL4030_INFO_##label = { \
 946         .base = offset, \
 947         .id = num, \
 948         .delay = turnon_delay, \
 949         .remap = remap_conf, \
 950         .desc = { \
 951                 .name = #label, \
 952                 .id = TWL4030_REG_##label, \
 953                 .ops = &twl4030smps_ops, \
 954                 .type = REGULATOR_VOLTAGE, \
 955                 .owner = THIS_MODULE, \
 956                 }, \
 957         }
 958
 959 #define TWL6030_ADJUSTABLE_SMPS(label) \
 960 static struct twlreg_info TWL6030_INFO_##label = { \
 961         .desc = { \
 962                 .name = #label, \
 963                 .id = TWL6030_REG_##label, \
 964                 .ops = &twl6030coresmps_ops, \
 965                 .type = REGULATOR_VOLTAGE, \
 966                 .owner = THIS_MODULE, \
 967                 }, \
 968         }
 969
 970 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
 971 static struct twlreg_info TWL6030_INFO_##label = { \
 972         .base = offset, \
 973         .min_mV = min_mVolts, \
 974         .max_mV = max_mVolts, \
 975         .desc = { \
 976                 .name = #label, \
 977                 .id = TWL6030_REG_##label, \
 978                 .n_voltages = (max_mVolts - min_mVolts)/100 + 1, \
 979                 .ops = &twl6030ldo_ops, \
 980                 .type = REGULATOR_VOLTAGE, \
 981                 .owner = THIS_MODULE, \
 982                 }, \
 983         }
 984
 985 #define TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
 986 static struct twlreg_info TWL6025_INFO_##label = { \
 987         .base = offset, \
 988         .min_mV = min_mVolts, \
 989         .max_mV = max_mVolts, \
 990         .desc = { \
 991                 .name = #label, \
 992                 .id = TWL6025_REG_##label, \
 993                 .n_voltages = ((max_mVolts - min_mVolts)/100) + 1, \
 994                 .ops = &twl6030ldo_ops, \
 995                 .type = REGULATOR_VOLTAGE, \
 996                 .owner = THIS_MODULE, \
 997                 }, \
 998         }
 999
1000 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
1001                 family, operations) \
1002 static struct twlreg_info TWLFIXED_INFO_##label = { \
1003         .base = offset, \
1004         .id = num, \
1005         .min_mV = mVolts, \
1006         .delay = turnon_delay, \
1007         .remap = remap_conf, \
1008         .desc = { \
1009                 .name = #label, \
1010                 .id = family##_REG_##label, \
1011                 .n_voltages = 1, \
1012                 .ops = &operations, \
1013                 .type = REGULATOR_VOLTAGE, \
1014                 .owner = THIS_MODULE, \
1015                 }, \
1016         }
1017
1018 #define TWL6030_FIXED_RESOURCE(label, offset, turnon_delay) \
1019 static struct twlreg_info TWLRES_INFO_##label = { \
1020         .base = offset, \
1021         .delay = turnon_delay, \
1022         .desc = { \
1023                 .name = #label, \
1024                 .id = TWL6030_REG_##label, \
1025                 .ops = &twl6030_fixed_resource, \
1026                 .type = REGULATOR_VOLTAGE, \
1027                 .owner = THIS_MODULE, \
1028                 }, \
1029         }
1030
1031 #define TWL6025_ADJUSTABLE_SMPS(label, offset) \
1032 static struct twlreg_info TWLSMPS_INFO_##label = { \
1033         .base = offset, \
1034         .min_mV = 600, \
1035         .max_mV = 2100, \
1036         .desc = { \
1037                 .name = #label, \
1038                 .id = TWL6025_REG_##label, \
1039                 .n_voltages = 63, \
1040                 .ops = &twlsmps_ops, \
1041                 .type = REGULATOR_VOLTAGE, \
1042                 .owner = THIS_MODULE, \
1043                 }, \
1044         }
1045
1046 /*
1047  * We list regulators here if systems need some level of
1048  * software control over them after boot.
1049  */
1050 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
1051 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
1052 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
1053 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
1054 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
1055 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
1056 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
1057 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
1058 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
1059 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
1060 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
1061 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
1062 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
1063 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
1064 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
1065 /* VUSBCP is managed *only* by the USB subchip */
1066 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
1067 /* Turnon-delay and remap configuration values for 6030 are not
1068    verified since the specification is not public */
1069 TWL6030_ADJUSTABLE_SMPS(VDD1);
1070 TWL6030_ADJUSTABLE_SMPS(VDD2);
1071 TWL6030_ADJUSTABLE_SMPS(VDD3);
1072 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
1073 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
1074 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
1075 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
1076 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
1077 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
1078 /* 6025 are renamed compared to 6030 versions */
1079 TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
1080 TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
1081 TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
1082 TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
1083 TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
1084 TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
1085 TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
1086 TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
1087 TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
1088 TWL4030_FIXED_LDO(VINTANA2, 0x3f, 1500, 11, 100, 0x08);
1089 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
1090 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
1091 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
1092 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
1093 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
1094 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1095 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1096 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1097 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1098 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1099 TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 0);
1100 TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34);
1101 TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10);
1102 TWL6025_ADJUSTABLE_SMPS(VIO, 0x16);
1103
1104 static u8 twl_get_smps_offset(void)
1105 {
1106         u8 value;
1107
1108         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1109                         TWL6030_SMPS_OFFSET);
1110         return value;
1111 }
1112
1113 static u8 twl_get_smps_mult(void)
1114 {
1115         u8 value;
1116
1117         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1118                         TWL6030_SMPS_MULT);
1119         return value;
1120 }
1121
1122 #define TWL_OF_MATCH(comp, family, label) \
1123         { \
1124                 .compatible = comp, \
1125                 .data = &family##_INFO_##label, \
1126         }
1127
1128 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1129 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1130 #define TWL6025_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6025, label)
1131 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1132 #define TWLRES_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLRES, label)
1133 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1134
1135 static const struct of_device_id twl_of_match[] __devinitconst = {
1136         TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1137         TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1138         TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1139         TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1140         TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1141         TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1142         TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1143         TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1144         TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1145         TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1146         TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1147         TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1148         TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1149         TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1150         TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1151         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1152         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1153         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1154         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1155         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1156         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1157         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1158         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1159         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1160         TWL6025_OF_MATCH("ti,twl6025-ldo2", LDO2),
1161         TWL6025_OF_MATCH("ti,twl6025-ldo4", LDO4),
1162         TWL6025_OF_MATCH("ti,twl6025-ldo3", LDO3),
1163         TWL6025_OF_MATCH("ti,twl6025-ldo5", LDO5),
1164         TWL6025_OF_MATCH("ti,twl6025-ldo1", LDO1),
1165         TWL6025_OF_MATCH("ti,twl6025-ldo7", LDO7),
1166         TWL6025_OF_MATCH("ti,twl6025-ldo6", LDO6),
1167         TWL6025_OF_MATCH("ti,twl6025-ldoln", LDOLN),
1168         TWL6025_OF_MATCH("ti,twl6025-ldousb", LDOUSB),
1169         TWLFIXED_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1170         TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1171         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1172         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1173         TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1174         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1175         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1176         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1177         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1178         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1179         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1180         TWLRES_OF_MATCH("ti,twl6030-clk32kg", CLK32KG),
1181         TWLSMPS_OF_MATCH("ti,twl6025-smps3", SMPS3),
1182         TWLSMPS_OF_MATCH("ti,twl6025-smps4", SMPS4),
1183         TWLSMPS_OF_MATCH("ti,twl6025-vio", VIO),
1184         {},
1185 };
1186 MODULE_DEVICE_TABLE(of, twl_of_match);
1187
1188 static int __devinit twlreg_probe(struct platform_device *pdev)
1189 {
1190         int                             i, id;
1191         struct twlreg_info              *info;
1192         struct regulator_init_data      *initdata;
1193         struct regulation_constraints   *c;
1194         struct regulator_dev            *rdev;
1195         struct twl_regulator_driver_data        *drvdata;
1196         const struct of_device_id       *match;
1197
1198         match = of_match_device(twl_of_match, &pdev->dev);
1199         if (match) {
1200                 info = match->data;
1201                 id = info->desc.id;
1202                 initdata = of_get_regulator_init_data(&pdev->dev,
1203                                                       pdev->dev.of_node);
1204                 drvdata = NULL;
1205         } else {
1206                 id = pdev->id;
1207                 initdata = pdev->dev.platform_data;
1208                 for (i = 0, info = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1209                         info = twl_of_match[i].data;
1210                         if (!info || info->desc.id != id)
1211                                 continue;
1212                         break;
1213                 }
1214                 drvdata = initdata->driver_data;
1215                 if (!drvdata)
1216                         return -EINVAL;
1217         }
1218
1219         if (!info)
1220                 return -ENODEV;
1221
1222         if (!initdata)
1223                 return -EINVAL;
1224
1225         if (drvdata) {
1226                 /* copy the driver data into regulator data */
1227                 info->features = drvdata->features;
1228                 info->data = drvdata->data;
1229                 info->set_voltage = drvdata->set_voltage;
1230                 info->get_voltage = drvdata->get_voltage;
1231         }
1232
1233         /* Constrain board-specific capabilities according to what
1234          * this driver and the chip itself can actually do.
1235          */
1236         c = &initdata->constraints;
1237         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1238         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1239                                 | REGULATOR_CHANGE_MODE
1240                                 | REGULATOR_CHANGE_STATUS;
1241         switch (id) {
1242         case TWL4030_REG_VIO:
1243         case TWL4030_REG_VDD1:
1244         case TWL4030_REG_VDD2:
1245         case TWL4030_REG_VPLL1:
1246         case TWL4030_REG_VINTANA1:
1247         case TWL4030_REG_VINTANA2:
1248         case TWL4030_REG_VINTDIG:
1249                 c->always_on = true;
1250                 break;
1251         default:
1252                 break;
1253         }
1254
1255         switch (id) {
1256         case TWL6025_REG_SMPS3:
1257                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1258                         info->flags |= SMPS_EXTENDED_EN;
1259                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1260                         info->flags |= SMPS_OFFSET_EN;
1261                 break;
1262         case TWL6025_REG_SMPS4:
1263                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1264                         info->flags |= SMPS_EXTENDED_EN;
1265                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1266                         info->flags |= SMPS_OFFSET_EN;
1267                 break;
1268         case TWL6025_REG_VIO:
1269                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1270                         info->flags |= SMPS_EXTENDED_EN;
1271                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1272                         info->flags |= SMPS_OFFSET_EN;
1273                 break;
1274         }
1275
1276         rdev = regulator_register(&info->desc, &pdev->dev, initdata, info,
1277                                                         pdev->dev.of_node);
1278         if (IS_ERR(rdev)) {
1279                 dev_err(&pdev->dev, "can't register %s, %ld\n",
1280                                 info->desc.name, PTR_ERR(rdev));
1281                 return PTR_ERR(rdev);
1282         }
1283         platform_set_drvdata(pdev, rdev);
1284
1285         if (twl_class_is_4030())
1286                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1287                                                 info->remap);
1288
1289         /* NOTE:  many regulators support short-circuit IRQs (presentable
1290          * as REGULATOR_OVER_CURRENT notifications?) configured via:
1291          *  - SC_CONFIG
1292          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1293          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1294          *  - IT_CONFIG
1295          */
1296
1297         return 0;
1298 }
1299
1300 static int __devexit twlreg_remove(struct platform_device *pdev)
1301 {
1302         regulator_unregister(platform_get_drvdata(pdev));
1303         return 0;
1304 }
1305
1306 MODULE_ALIAS("platform:twl_reg");
1307
1308 static struct platform_driver twlreg_driver = {
1309         .probe          = twlreg_probe,
1310         .remove         = __devexit_p(twlreg_remove),
1311         /* NOTE: short name, to work around driver model truncation of
1312          * "twl_regulator.12" (and friends) to "twl_regulator.1".
1313          */
1314         .driver  = {
1315                 .name  = "twl_reg",
1316                 .owner = THIS_MODULE,
1317                 .of_match_table = of_match_ptr(twl_of_match),
1318         },
1319 };
1320
1321 static int __init twlreg_init(void)
1322 {
1323         return platform_driver_register(&twlreg_driver);
1324 }
1325 subsys_initcall(twlreg_init);
1326
1327 static void __exit twlreg_exit(void)
1328 {
1329         platform_driver_unregister(&twlreg_driver);
1330 }
1331 module_exit(twlreg_exit)
1332
1333 MODULE_DESCRIPTION("TWL regulator driver");
1334 MODULE_LICENSE("GPL");