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/platform_device.h>
  16 #include <linux/of.h>
  17 #include <linux/of_device.h>
  18 #include <linux/regulator/driver.h>
  19 #include <linux/regulator/machine.h>
  20 #include <linux/regulator/of_regulator.h>
  21 #include <linux/i2c/twl.h>
  22
  23
  24 /*
  25  * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
  26  * USB OTG transceiver, an RTC, ADC, PWM, and lots more.  Some versions
  27  * include an audio codec, battery charger, and more voltage regulators.
  28  * These chips are often used in OMAP-based systems.
  29  *
  30  * This driver implements software-based resource control for various
  31  * voltage regulators.  This is usually augmented with state machine
  32  * based control.
  33  */
  34
  35 struct twlreg_info {
  36         /* start of regulator's PM_RECEIVER control register bank */
  37         u8                      base;
  38
  39         /* twl resource ID, for resource control state machine */
  40         u8                      id;
  41
  42         /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
  43         u8                      table_len;
  44         const u16               *table;
  45
  46         /* State REMAP default configuration */
  47         u8                      remap;
  48
  49         /* chip constraints on regulator behavior */
  50         u16                     min_mV;
  51         u16                     max_mV;
  52
  53         u8                      flags;
  54
  55         /* used by regulator core */
  56         struct regulator_desc   desc;
  57
  58         /* chip specific features */
  59         unsigned long           features;
  60
  61         /*
  62          * optional override functions for voltage set/get
  63          * these are currently only used for SMPS regulators
  64          */
  65         int                     (*get_voltage)(void *data);
  66         int                     (*set_voltage)(void *data, int target_uV);
  67
  68         /* data passed from board for external get/set voltage */
  69         void                    *data;
  70 };
  71
  72
  73 /* LDO control registers ... offset is from the base of its register bank.
  74  * The first three registers of all power resource banks help hardware to
  75  * manage the various resource groups.
  76  */
  77 /* Common offset in TWL4030/6030 */
  78 #define VREG_GRP                0
  79 /* TWL4030 register offsets */
  80 #define VREG_TYPE               1
  81 #define VREG_REMAP              2
  82 #define VREG_DEDICATED          3       /* LDO control */
  83 #define VREG_VOLTAGE_SMPS_4030  9
  84 /* TWL6030 register offsets */
  85 #define VREG_TRANS              1
  86 #define VREG_STATE              2
  87 #define VREG_VOLTAGE            3
  88 #define VREG_VOLTAGE_SMPS       4
  89 /* TWL6030 Misc register offsets */
  90 #define VREG_BC_ALL             1
  91 #define VREG_BC_REF             2
  92 #define VREG_BC_PROC            3
  93 #define VREG_BC_CLK_RST         4
  94
  95 /* TWL6030 LDO register values for CFG_STATE */
  96 #define TWL6030_CFG_STATE_OFF   0x00
  97 #define TWL6030_CFG_STATE_ON    0x01
  98 #define TWL6030_CFG_STATE_OFF2  0x02
  99 #define TWL6030_CFG_STATE_SLEEP 0x03
 100 #define TWL6030_CFG_STATE_GRP_SHIFT     5
 101 #define TWL6030_CFG_STATE_APP_SHIFT     2
 102 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
 103 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
 104                                                 TWL6030_CFG_STATE_APP_SHIFT)
 105
 106 /* Flags for SMPS Voltage reading */
 107 #define SMPS_OFFSET_EN          BIT(0)
 108 #define SMPS_EXTENDED_EN        BIT(1)
 109
 110 /* twl6025 SMPS EPROM values */
 111 #define TWL6030_SMPS_OFFSET             0xB0
 112 #define TWL6030_SMPS_MULT               0xB3
 113 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
 114 #define SMPS_MULTOFFSET_VIO     BIT(1)
 115 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
 116
 117 static inline int
 118 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
 119 {
 120         u8 value;
 121         int status;
 122
 123         status = twl_i2c_read_u8(slave_subgp,
 124                         &value, info->base + offset);
 125         return (status < 0) ? status : value;
 126 }
 127
 128 static inline int
 129 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
 130                                                  u8 value)
 131 {
 132         return twl_i2c_write_u8(slave_subgp,
 133                         value, info->base + offset);
 134 }
 135
 136 /*----------------------------------------------------------------------*/
 137
 138 /* generic power resource operations, which work on all regulators */
 139
 140 static int twlreg_grp(struct regulator_dev *rdev)
 141 {
 142         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
 143                                                                  VREG_GRP);
 144 }
 145
 146 /*
 147  * Enable/disable regulators by joining/leaving the P1 (processor) group.
 148  * We assume nobody else is updating the DEV_GRP registers.
 149  */
 150 /* definition for 4030 family */
 151 #define P3_GRP_4030     BIT(7)          /* "peripherals" */
 152 #define P2_GRP_4030     BIT(6)          /* secondary processor, modem, etc */
 153 #define P1_GRP_4030     BIT(5)          /* CPU/Linux */
 154 /* definition for 6030 family */
 155 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
 156 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
 157 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
 158
 159 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
 160 {
 161         int     state = twlreg_grp(rdev);
 162
 163         if (state < 0)
 164                 return state;
 165
 166         return state & P1_GRP_4030;
 167 }
 168
 169 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
 170 {
 171         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 172         int                     grp = 0, val;
 173
 174         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS))) {
 175                 grp = twlreg_grp(rdev);
 176                 if (grp < 0)
 177                         return grp;
 178                 grp &= P1_GRP_6030;
 179         } else {
 180                 grp = 1;
 181         }
 182
 183         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 184         val = TWL6030_CFG_STATE_APP(val);
 185
 186         return grp && (val == TWL6030_CFG_STATE_ON);
 187 }
 188
 189 static int twl4030reg_enable(struct regulator_dev *rdev)
 190 {
 191         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 192         int                     grp;
 193         int                     ret;
 194
 195         grp = twlreg_grp(rdev);
 196         if (grp < 0)
 197                 return grp;
 198
 199         grp |= P1_GRP_4030;
 200
 201         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
 202
 203         return ret;
 204 }
 205
 206 static int twl6030reg_enable(struct regulator_dev *rdev)
 207 {
 208         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 209         int                     grp = 0;
 210         int                     ret;
 211
 212         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
 213                 grp = twlreg_grp(rdev);
 214         if (grp < 0)
 215                 return grp;
 216
 217         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 218                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
 219                         TWL6030_CFG_STATE_ON);
 220         return ret;
 221 }
 222
 223 static int twl4030reg_disable(struct regulator_dev *rdev)
 224 {
 225         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 226         int                     grp;
 227         int                     ret;
 228
 229         grp = twlreg_grp(rdev);
 230         if (grp < 0)
 231                 return grp;
 232
 233         grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
 234
 235         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
 236
 237         return ret;
 238 }
 239
 240 static int twl6030reg_disable(struct regulator_dev *rdev)
 241 {
 242         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 243         int                     grp = 0;
 244         int                     ret;
 245
 246         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
 247                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
 248
 249         /* For 6030, set the off state for all grps enabled */
 250         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 251                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
 252                         TWL6030_CFG_STATE_OFF);
 253
 254         return ret;
 255 }
 256
 257 static int twl4030reg_get_status(struct regulator_dev *rdev)
 258 {
 259         int     state = twlreg_grp(rdev);
 260
 261         if (state < 0)
 262                 return state;
 263         state &= 0x0f;
 264
 265         /* assume state != WARM_RESET; we'd not be running...  */
 266         if (!state)
 267                 return REGULATOR_STATUS_OFF;
 268         return (state & BIT(3))
 269                 ? REGULATOR_STATUS_NORMAL
 270                 : REGULATOR_STATUS_STANDBY;
 271 }
 272
 273 static int twl6030reg_get_status(struct regulator_dev *rdev)
 274 {
 275         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 276         int                     val;
 277
 278         val = twlreg_grp(rdev);
 279         if (val < 0)
 280                 return val;
 281
 282         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 283
 284         switch (TWL6030_CFG_STATE_APP(val)) {
 285         case TWL6030_CFG_STATE_ON:
 286                 return REGULATOR_STATUS_NORMAL;
 287
 288         case TWL6030_CFG_STATE_SLEEP:
 289                 return REGULATOR_STATUS_STANDBY;
 290
 291         case TWL6030_CFG_STATE_OFF:
 292         case TWL6030_CFG_STATE_OFF2:
 293         default:
 294                 break;
 295         }
 296
 297         return REGULATOR_STATUS_OFF;
 298 }
 299
 300 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 301 {
 302         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 303         unsigned                message;
 304         int                     status;
 305
 306         /* We can only set the mode through state machine commands... */
 307         switch (mode) {
 308         case REGULATOR_MODE_NORMAL:
 309                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
 310                 break;
 311         case REGULATOR_MODE_STANDBY:
 312                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
 313                 break;
 314         default:
 315                 return -EINVAL;
 316         }
 317
 318         /* Ensure the resource is associated with some group */
 319         status = twlreg_grp(rdev);
 320         if (status < 0)
 321                 return status;
 322         if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
 323                 return -EACCES;
 324
 325         status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
 326                         message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
 327         if (status < 0)
 328                 return status;
 329
 330         return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
 331                         message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
 332 }
 333
 334 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 335 {
 336         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 337         int grp = 0;
 338         int val;
 339
 340         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
 341                 grp = twlreg_grp(rdev);
 342
 343         if (grp < 0)
 344                 return grp;
 345
 346         /* Compose the state register settings */
 347         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
 348         /* We can only set the mode through state machine commands... */
 349         switch (mode) {
 350         case REGULATOR_MODE_NORMAL:
 351                 val |= TWL6030_CFG_STATE_ON;
 352                 break;
 353         case REGULATOR_MODE_STANDBY:
 354                 val |= TWL6030_CFG_STATE_SLEEP;
 355                 break;
 356
 357         default:
 358                 return -EINVAL;
 359         }
 360
 361         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
 362 }
 363
 364 /*----------------------------------------------------------------------*/
 365
 366 /*
 367  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
 368  * select field in its control register.   We use tables indexed by VSEL
 369  * to record voltages in milliVolts.  (Accuracy is about three percent.)
 370  *
 371  * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
 372  * currently handled by listing two slightly different VAUX2 regulators,
 373  * only one of which will be configured.
 374  *
 375  * VSEL values documented as "TI cannot support these values" are flagged
 376  * in these tables as UNSUP() values; we normally won't assign them.
 377  *
 378  * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
 379  * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
 380  */
 381 #define UNSUP_MASK      0x8000
 382
 383 #define UNSUP(x)        (UNSUP_MASK | (x))
 384 #define IS_UNSUP(info, x)                       \
 385         ((UNSUP_MASK & (x)) &&                  \
 386          !((info)->features & TWL4030_ALLOW_UNSUPPORTED))
 387 #define LDO_MV(x)       (~UNSUP_MASK & (x))
 388
 389
 390 static const u16 VAUX1_VSEL_table[] = {
 391         UNSUP(1500), UNSUP(1800), 2500, 2800,
 392         3000, 3000, 3000, 3000,
 393 };
 394 static const u16 VAUX2_4030_VSEL_table[] = {
 395         UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
 396         1500, 1800, UNSUP(1850), 2500,
 397         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
 398         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
 399 };
 400 static const u16 VAUX2_VSEL_table[] = {
 401         1700, 1700, 1900, 1300,
 402         1500, 1800, 2000, 2500,
 403         2100, 2800, 2200, 2300,
 404         2400, 2400, 2400, 2400,
 405 };
 406 static const u16 VAUX3_VSEL_table[] = {
 407         1500, 1800, 2500, 2800,
 408         3000, 3000, 3000, 3000,
 409 };
 410 static const u16 VAUX4_VSEL_table[] = {
 411         700, 1000, 1200, UNSUP(1300),
 412         1500, 1800, UNSUP(1850), 2500,
 413         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
 414         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
 415 };
 416 static const u16 VMMC1_VSEL_table[] = {
 417         1850, 2850, 3000, 3150,
 418 };
 419 static const u16 VMMC2_VSEL_table[] = {
 420         UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
 421         UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
 422         2600, 2800, 2850, 3000,
 423         3150, 3150, 3150, 3150,
 424 };
 425 static const u16 VPLL1_VSEL_table[] = {
 426         1000, 1200, 1300, 1800,
 427         UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
 428 };
 429 static const u16 VPLL2_VSEL_table[] = {
 430         700, 1000, 1200, 1300,
 431         UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
 432         UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
 433         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
 434 };
 435 static const u16 VSIM_VSEL_table[] = {
 436         UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
 437         2800, 3000, 3000, 3000,
 438 };
 439 static const u16 VDAC_VSEL_table[] = {
 440         1200, 1300, 1800, 1800,
 441 };
 442 static const u16 VDD1_VSEL_table[] = {
 443         800, 1450,
 444 };
 445 static const u16 VDD2_VSEL_table[] = {
 446         800, 1450, 1500,
 447 };
 448 static const u16 VIO_VSEL_table[] = {
 449         1800, 1850,
 450 };
 451 static const u16 VINTANA2_VSEL_table[] = {
 452         2500, 2750,
 453 };
 454
 455 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
 456 {
 457         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 458         int                     mV = info->table[index];
 459
 460         return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000);
 461 }
 462
 463 static int
 464 twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 465 {
 466         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 467
 468         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
 469                             selector);
 470 }
 471
 472 static int twl4030ldo_get_voltage(struct regulator_dev *rdev)
 473 {
 474         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 475         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
 476                                                                 VREG_VOLTAGE);
 477
 478         if (vsel < 0)
 479                 return vsel;
 480
 481         vsel &= info->table_len - 1;
 482         return LDO_MV(info->table[vsel]) * 1000;
 483 }
 484
 485 static struct regulator_ops twl4030ldo_ops = {
 486         .list_voltage   = twl4030ldo_list_voltage,
 487
 488         .set_voltage_sel = twl4030ldo_set_voltage_sel,
 489         .get_voltage    = twl4030ldo_get_voltage,
 490
 491         .enable         = twl4030reg_enable,
 492         .disable        = twl4030reg_disable,
 493         .is_enabled     = twl4030reg_is_enabled,
 494
 495         .set_mode       = twl4030reg_set_mode,
 496
 497         .get_status     = twl4030reg_get_status,
 498 };
 499
 500 static int
 501 twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
 502                         unsigned *selector)
 503 {
 504         struct twlreg_info *info = rdev_get_drvdata(rdev);
 505         int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 506
 507         if (info->set_voltage) {
 508                 return info->set_voltage(info->data, min_uV);
 509         } else {
 510                 twlreg_write(info, TWL_MODULE_PM_RECEIVER,
 511                         VREG_VOLTAGE_SMPS_4030, vsel);
 512         }
 513
 514         return 0;
 515 }
 516
 517 static int twl4030smps_get_voltage(struct regulator_dev *rdev)
 518 {
 519         struct twlreg_info *info = rdev_get_drvdata(rdev);
 520         int vsel;
 521
 522         if (info->get_voltage)
 523                 return info->get_voltage(info->data);
 524
 525         vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
 526                 VREG_VOLTAGE_SMPS_4030);
 527
 528         return vsel * 12500 + 600000;
 529 }
 530
 531 static struct regulator_ops twl4030smps_ops = {
 532         .set_voltage    = twl4030smps_set_voltage,
 533         .get_voltage    = twl4030smps_get_voltage,
 534 };
 535
 536 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
 537         int max_uV, unsigned *selector)
 538 {
 539         struct twlreg_info *info = rdev_get_drvdata(rdev);
 540
 541         if (info->set_voltage)
 542                 return info->set_voltage(info->data, min_uV);
 543
 544         return -ENODEV;
 545 }
 546
 547 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
 548 {
 549         struct twlreg_info *info = rdev_get_drvdata(rdev);
 550
 551         if (info->get_voltage)
 552                 return info->get_voltage(info->data);
 553
 554         return -ENODEV;
 555 }
 556
 557 static struct regulator_ops twl6030coresmps_ops = {
 558         .set_voltage    = twl6030coresmps_set_voltage,
 559         .get_voltage    = twl6030coresmps_get_voltage,
 560 };
 561
 562 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
 563 {
 564         struct twlreg_info *info = rdev_get_drvdata(rdev);
 565
 566         switch (sel) {
 567         case 0:
 568                 return 0;
 569         case 1 ... 24:
 570                 /* Linear mapping from 00000001 to 00011000:
 571                  * Absolute voltage value = 1.0 V + 0.1 V × (sel – 00000001)
 572                  */
 573                 return (info->min_mV + 100 * (sel - 1)) * 1000;
 574         case 25 ... 30:
 575                 return -EINVAL;
 576         case 31:
 577                 return 2750000;
 578         default:
 579                 return -EINVAL;
 580         }
 581 }
 582
 583 static int
 584 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 585 {
 586         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 587
 588         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
 589                             selector);
 590 }
 591
 592 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
 593 {
 594         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 595         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
 596
 597         return vsel;
 598 }
 599
 600 static struct regulator_ops twl6030ldo_ops = {
 601         .list_voltage   = twl6030ldo_list_voltage,
 602
 603         .set_voltage_sel = twl6030ldo_set_voltage_sel,
 604         .get_voltage_sel = twl6030ldo_get_voltage_sel,
 605
 606         .enable         = twl6030reg_enable,
 607         .disable        = twl6030reg_disable,
 608         .is_enabled     = twl6030reg_is_enabled,
 609
 610         .set_mode       = twl6030reg_set_mode,
 611
 612         .get_status     = twl6030reg_get_status,
 613 };
 614
 615 /*----------------------------------------------------------------------*/
 616
 617 /*
 618  * Fixed voltage LDOs don't have a VSEL field to update.
 619  */
 620 static int twlfixed_list_voltage(struct regulator_dev *rdev, unsigned index)
 621 {
 622         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 623
 624         return info->min_mV * 1000;
 625 }
 626
 627 static struct regulator_ops twl4030fixed_ops = {
 628         .list_voltage   = twlfixed_list_voltage,
 629
 630         .enable         = twl4030reg_enable,
 631         .disable        = twl4030reg_disable,
 632         .is_enabled     = twl4030reg_is_enabled,
 633
 634         .set_mode       = twl4030reg_set_mode,
 635
 636         .get_status     = twl4030reg_get_status,
 637 };
 638
 639 static struct regulator_ops twl6030fixed_ops = {
 640         .list_voltage   = twlfixed_list_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 static struct regulator_ops twl6030_fixed_resource = {
 652         .enable         = twl6030reg_enable,
 653         .disable        = twl6030reg_disable,
 654         .is_enabled     = twl6030reg_is_enabled,
 655         .get_status     = twl6030reg_get_status,
 656 };
 657
 658 /*
 659  * SMPS status and control
 660  */
 661
 662 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
 663 {
 664         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 665
 666         int voltage = 0;
 667
 668         switch (info->flags) {
 669         case SMPS_OFFSET_EN:
 670                 voltage = 100000;
 671                 /* fall through */
 672         case 0:
 673                 switch (index) {
 674                 case 0:
 675                         voltage = 0;
 676                         break;
 677                 case 58:
 678                         voltage = 1350 * 1000;
 679                         break;
 680                 case 59:
 681                         voltage = 1500 * 1000;
 682                         break;
 683                 case 60:
 684                         voltage = 1800 * 1000;
 685                         break;
 686                 case 61:
 687                         voltage = 1900 * 1000;
 688                         break;
 689                 case 62:
 690                         voltage = 2100 * 1000;
 691                         break;
 692                 default:
 693                         voltage += (600000 + (12500 * (index - 1)));
 694                 }
 695                 break;
 696         case SMPS_EXTENDED_EN:
 697                 switch (index) {
 698                 case 0:
 699                         voltage = 0;
 700                         break;
 701                 case 58:
 702                         voltage = 2084 * 1000;
 703                         break;
 704                 case 59:
 705                         voltage = 2315 * 1000;
 706                         break;
 707                 case 60:
 708                         voltage = 2778 * 1000;
 709                         break;
 710                 case 61:
 711                         voltage = 2932 * 1000;
 712                         break;
 713                 case 62:
 714                         voltage = 3241 * 1000;
 715                         break;
 716                 default:
 717                         voltage = (1852000 + (38600 * (index - 1)));
 718                 }
 719                 break;
 720         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
 721                 switch (index) {
 722                 case 0:
 723                         voltage = 0;
 724                         break;
 725                 case 58:
 726                         voltage = 4167 * 1000;
 727                         break;
 728                 case 59:
 729                         voltage = 2315 * 1000;
 730                         break;
 731                 case 60:
 732                         voltage = 2778 * 1000;
 733                         break;
 734                 case 61:
 735                         voltage = 2932 * 1000;
 736                         break;
 737                 case 62:
 738                         voltage = 3241 * 1000;
 739                         break;
 740                 default:
 741                         voltage = (2161000 + (38600 * (index - 1)));
 742                 }
 743                 break;
 744         }
 745
 746         return voltage;
 747 }
 748
 749 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
 750                                    int max_uV)
 751 {
 752         struct twlreg_info *info = rdev_get_drvdata(rdev);
 753         int vsel = 0;
 754
 755         switch (info->flags) {
 756         case 0:
 757                 if (min_uV == 0)
 758                         vsel = 0;
 759                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
 760                         vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 761                         vsel++;
 762                 }
 763                 /* Values 1..57 for vsel are linear and can be calculated
 764                  * values 58..62 are non linear.
 765                  */
 766                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 767                         vsel = 62;
 768                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 769                         vsel = 61;
 770                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 771                         vsel = 60;
 772                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 773                         vsel = 59;
 774                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
 775                         vsel = 58;
 776                 else
 777                         return -EINVAL;
 778                 break;
 779         case SMPS_OFFSET_EN:
 780                 if (min_uV == 0)
 781                         vsel = 0;
 782                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
 783                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
 784                         vsel++;
 785                 }
 786                 /* Values 1..57 for vsel are linear and can be calculated
 787                  * values 58..62 are non linear.
 788                  */
 789                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 790                         vsel = 62;
 791                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 792                         vsel = 61;
 793                 else if ((min_uV > 1350000) && (min_uV <= 1800000))
 794                         vsel = 60;
 795                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 796                         vsel = 59;
 797                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
 798                         vsel = 58;
 799                 else
 800                         return -EINVAL;
 801                 break;
 802         case SMPS_EXTENDED_EN:
 803                 if (min_uV == 0) {
 804                         vsel = 0;
 805                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
 806                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
 807                         vsel++;
 808                 }
 809                 break;
 810         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
 811                 if (min_uV == 0) {
 812                         vsel = 0;
 813                 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
 814                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
 815                         vsel++;
 816                 }
 817                 break;
 818         }
 819
 820         return vsel;
 821 }
 822
 823 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
 824                                        unsigned int selector)
 825 {
 826         struct twlreg_info *info = rdev_get_drvdata(rdev);
 827
 828         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
 829                             selector);
 830 }
 831
 832 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
 833 {
 834         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 835
 836         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
 837 }
 838
 839 static struct regulator_ops twlsmps_ops = {
 840         .list_voltage           = twl6030smps_list_voltage,
 841         .map_voltage            = twl6030smps_map_voltage,
 842
 843         .set_voltage_sel        = twl6030smps_set_voltage_sel,
 844         .get_voltage_sel        = twl6030smps_get_voltage_sel,
 845
 846         .enable                 = twl6030reg_enable,
 847         .disable                = twl6030reg_disable,
 848         .is_enabled             = twl6030reg_is_enabled,
 849
 850         .set_mode               = twl6030reg_set_mode,
 851
 852         .get_status             = twl6030reg_get_status,
 853 };
 854
 855 /*----------------------------------------------------------------------*/
 856
 857 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
 858                         remap_conf) \
 859                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
 860                         remap_conf, TWL4030, twl4030fixed_ops)
 861 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
 862                 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
 863                         0x0, TWL6030, twl6030fixed_ops)
 864
 865 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
 866 static const struct twlreg_info TWL4030_INFO_##label = { \
 867         .base = offset, \
 868         .id = num, \
 869         .table_len = ARRAY_SIZE(label##_VSEL_table), \
 870         .table = label##_VSEL_table, \
 871         .remap = remap_conf, \
 872         .desc = { \
 873                 .name = #label, \
 874                 .id = TWL4030_REG_##label, \
 875                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
 876                 .ops = &twl4030ldo_ops, \
 877                 .type = REGULATOR_VOLTAGE, \
 878                 .owner = THIS_MODULE, \
 879                 .enable_time = turnon_delay, \
 880                 }, \
 881         }
 882
 883 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
 884 static const struct twlreg_info TWL4030_INFO_##label = { \
 885         .base = offset, \
 886         .id = num, \
 887         .remap = remap_conf, \
 888         .desc = { \
 889                 .name = #label, \
 890                 .id = TWL4030_REG_##label, \
 891                 .ops = &twl4030smps_ops, \
 892                 .type = REGULATOR_VOLTAGE, \
 893                 .owner = THIS_MODULE, \
 894                 .enable_time = turnon_delay, \
 895                 }, \
 896         }
 897
 898 #define TWL6030_ADJUSTABLE_SMPS(label) \
 899 static const struct twlreg_info TWL6030_INFO_##label = { \
 900         .desc = { \
 901                 .name = #label, \
 902                 .id = TWL6030_REG_##label, \
 903                 .ops = &twl6030coresmps_ops, \
 904                 .type = REGULATOR_VOLTAGE, \
 905                 .owner = THIS_MODULE, \
 906                 }, \
 907         }
 908
 909 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
 910 static const struct twlreg_info TWL6030_INFO_##label = { \
 911         .base = offset, \
 912         .min_mV = min_mVolts, \
 913         .max_mV = max_mVolts, \
 914         .desc = { \
 915                 .name = #label, \
 916                 .id = TWL6030_REG_##label, \
 917                 .n_voltages = 32, \
 918                 .ops = &twl6030ldo_ops, \
 919                 .type = REGULATOR_VOLTAGE, \
 920                 .owner = THIS_MODULE, \
 921                 }, \
 922         }
 923
 924 #define TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
 925 static const struct twlreg_info TWL6025_INFO_##label = { \
 926         .base = offset, \
 927         .min_mV = min_mVolts, \
 928         .max_mV = max_mVolts, \
 929         .desc = { \
 930                 .name = #label, \
 931                 .id = TWL6025_REG_##label, \
 932                 .n_voltages = 32, \
 933                 .ops = &twl6030ldo_ops, \
 934                 .type = REGULATOR_VOLTAGE, \
 935                 .owner = THIS_MODULE, \
 936                 }, \
 937         }
 938
 939 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
 940                 family, operations) \
 941 static const struct twlreg_info TWLFIXED_INFO_##label = { \
 942         .base = offset, \
 943         .id = num, \
 944         .min_mV = mVolts, \
 945         .remap = remap_conf, \
 946         .desc = { \
 947                 .name = #label, \
 948                 .id = family##_REG_##label, \
 949                 .n_voltages = 1, \
 950                 .ops = &operations, \
 951                 .type = REGULATOR_VOLTAGE, \
 952                 .owner = THIS_MODULE, \
 953                 .enable_time = turnon_delay, \
 954                 }, \
 955         }
 956
 957 #define TWL6030_FIXED_RESOURCE(label, offset, turnon_delay) \
 958 static struct twlreg_info TWLRES_INFO_##label = { \
 959         .base = offset, \
 960         .desc = { \
 961                 .name = #label, \
 962                 .id = TWL6030_REG_##label, \
 963                 .ops = &twl6030_fixed_resource, \
 964                 .type = REGULATOR_VOLTAGE, \
 965                 .owner = THIS_MODULE, \
 966                 .enable_time = turnon_delay, \
 967                 }, \
 968         }
 969
 970 #define TWL6025_ADJUSTABLE_SMPS(label, offset) \
 971 static const struct twlreg_info TWLSMPS_INFO_##label = { \
 972         .base = offset, \
 973         .min_mV = 600, \
 974         .max_mV = 2100, \
 975         .desc = { \
 976                 .name = #label, \
 977                 .id = TWL6025_REG_##label, \
 978                 .n_voltages = 63, \
 979                 .ops = &twlsmps_ops, \
 980                 .type = REGULATOR_VOLTAGE, \
 981                 .owner = THIS_MODULE, \
 982                 }, \
 983         }
 984
 985 /*
 986  * We list regulators here if systems need some level of
 987  * software control over them after boot.
 988  */
 989 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
 990 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
 991 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
 992 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
 993 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
 994 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
 995 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
 996 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
 997 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
 998 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
 999 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
1000 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
1001 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
1002 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
1003 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
1004 /* VUSBCP is managed *only* by the USB subchip */
1005 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
1006 /* Turnon-delay and remap configuration values for 6030 are not
1007    verified since the specification is not public */
1008 TWL6030_ADJUSTABLE_SMPS(VDD1);
1009 TWL6030_ADJUSTABLE_SMPS(VDD2);
1010 TWL6030_ADJUSTABLE_SMPS(VDD3);
1011 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
1012 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
1013 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
1014 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
1015 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
1016 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
1017 /* 6025 are renamed compared to 6030 versions */
1018 TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
1019 TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
1020 TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
1021 TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
1022 TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
1023 TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
1024 TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
1025 TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
1026 TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
1027 TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08);
1028 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
1029 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
1030 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
1031 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
1032 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
1033 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1034 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1035 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1036 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1037 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1038 TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34);
1039 TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10);
1040 TWL6025_ADJUSTABLE_SMPS(VIO, 0x16);
1041
1042 static u8 twl_get_smps_offset(void)
1043 {
1044         u8 value;
1045
1046         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1047                         TWL6030_SMPS_OFFSET);
1048         return value;
1049 }
1050
1051 static u8 twl_get_smps_mult(void)
1052 {
1053         u8 value;
1054
1055         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1056                         TWL6030_SMPS_MULT);
1057         return value;
1058 }
1059
1060 #define TWL_OF_MATCH(comp, family, label) \
1061         { \
1062                 .compatible = comp, \
1063                 .data = &family##_INFO_##label, \
1064         }
1065
1066 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1067 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1068 #define TWL6025_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6025, label)
1069 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1070 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1071
1072 static const struct of_device_id twl_of_match[] __devinitconst = {
1073         TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1074         TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1075         TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1076         TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1077         TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1078         TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1079         TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1080         TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1081         TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1082         TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1083         TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1084         TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1085         TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1086         TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1087         TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1088         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1089         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1090         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1091         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1092         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1093         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1094         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1095         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1096         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1097         TWL6025_OF_MATCH("ti,twl6025-ldo2", LDO2),
1098         TWL6025_OF_MATCH("ti,twl6025-ldo4", LDO4),
1099         TWL6025_OF_MATCH("ti,twl6025-ldo3", LDO3),
1100         TWL6025_OF_MATCH("ti,twl6025-ldo5", LDO5),
1101         TWL6025_OF_MATCH("ti,twl6025-ldo1", LDO1),
1102         TWL6025_OF_MATCH("ti,twl6025-ldo7", LDO7),
1103         TWL6025_OF_MATCH("ti,twl6025-ldo6", LDO6),
1104         TWL6025_OF_MATCH("ti,twl6025-ldoln", LDOLN),
1105         TWL6025_OF_MATCH("ti,twl6025-ldousb", LDOUSB),
1106         TWLFIXED_OF_MATCH("ti,twl4030-vintana1", VINTANA1),
1107         TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1108         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1109         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1110         TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1111         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1112         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1113         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1114         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1115         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1116         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1117         TWLSMPS_OF_MATCH("ti,twl6025-smps3", SMPS3),
1118         TWLSMPS_OF_MATCH("ti,twl6025-smps4", SMPS4),
1119         TWLSMPS_OF_MATCH("ti,twl6025-vio", VIO),
1120         {},
1121 };
1122 MODULE_DEVICE_TABLE(of, twl_of_match);
1123
1124 static int __devinit twlreg_probe(struct platform_device *pdev)
1125 {
1126         int                             i, id;
1127         struct twlreg_info              *info;
1128         const struct twlreg_info        *template;
1129         struct regulator_init_data      *initdata;
1130         struct regulation_constraints   *c;
1131         struct regulator_dev            *rdev;
1132         struct twl_regulator_driver_data        *drvdata;
1133         const struct of_device_id       *match;
1134         struct regulator_config         config = { };
1135
1136         match = of_match_device(twl_of_match, &pdev->dev);
1137         if (match) {
1138                 template = match->data;
1139                 id = template->desc.id;
1140                 initdata = of_get_regulator_init_data(&pdev->dev,
1141                                                       pdev->dev.of_node);
1142                 drvdata = NULL;
1143         } else {
1144                 id = pdev->id;
1145                 initdata = pdev->dev.platform_data;
1146                 for (i = 0, template = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1147                         template = twl_of_match[i].data;
1148                         if (template && template->desc.id == id)
1149                                 break;
1150                 }
1151                 if (i == ARRAY_SIZE(twl_of_match))
1152                         return -ENODEV;
1153
1154                 drvdata = initdata->driver_data;
1155                 if (!drvdata)
1156                         return -EINVAL;
1157         }
1158
1159         if (!template)
1160                 return -ENODEV;
1161
1162         if (!initdata)
1163                 return -EINVAL;
1164
1165         info = kmemdup(template, sizeof (*info), GFP_KERNEL);
1166         if (!info)
1167                 return -ENOMEM;
1168
1169         if (drvdata) {
1170                 /* copy the driver data into regulator data */
1171                 info->features = drvdata->features;
1172                 info->data = drvdata->data;
1173                 info->set_voltage = drvdata->set_voltage;
1174                 info->get_voltage = drvdata->get_voltage;
1175         }
1176
1177         /* Constrain board-specific capabilities according to what
1178          * this driver and the chip itself can actually do.
1179          */
1180         c = &initdata->constraints;
1181         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1182         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1183                                 | REGULATOR_CHANGE_MODE
1184                                 | REGULATOR_CHANGE_STATUS;
1185         switch (id) {
1186         case TWL4030_REG_VIO:
1187         case TWL4030_REG_VDD1:
1188         case TWL4030_REG_VDD2:
1189         case TWL4030_REG_VPLL1:
1190         case TWL4030_REG_VINTANA1:
1191         case TWL4030_REG_VINTANA2:
1192         case TWL4030_REG_VINTDIG:
1193                 c->always_on = true;
1194                 break;
1195         default:
1196                 break;
1197         }
1198
1199         switch (id) {
1200         case TWL6025_REG_SMPS3:
1201                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1202                         info->flags |= SMPS_EXTENDED_EN;
1203                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1204                         info->flags |= SMPS_OFFSET_EN;
1205                 break;
1206         case TWL6025_REG_SMPS4:
1207                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1208                         info->flags |= SMPS_EXTENDED_EN;
1209                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1210                         info->flags |= SMPS_OFFSET_EN;
1211                 break;
1212         case TWL6025_REG_VIO:
1213                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1214                         info->flags |= SMPS_EXTENDED_EN;
1215                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1216                         info->flags |= SMPS_OFFSET_EN;
1217                 break;
1218         }
1219
1220         config.dev = &pdev->dev;
1221         config.init_data = initdata;
1222         config.driver_data = info;
1223         config.of_node = pdev->dev.of_node;
1224
1225         rdev = regulator_register(&info->desc, &config);
1226         if (IS_ERR(rdev)) {
1227                 dev_err(&pdev->dev, "can't register %s, %ld\n",
1228                                 info->desc.name, PTR_ERR(rdev));
1229                 kfree(info);
1230                 return PTR_ERR(rdev);
1231         }
1232         platform_set_drvdata(pdev, rdev);
1233
1234         if (twl_class_is_4030())
1235                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1236                                                 info->remap);
1237
1238         /* NOTE:  many regulators support short-circuit IRQs (presentable
1239          * as REGULATOR_OVER_CURRENT notifications?) configured via:
1240          *  - SC_CONFIG
1241          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1242          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1243          *  - IT_CONFIG
1244          */
1245
1246         return 0;
1247 }
1248
1249 static int __devexit twlreg_remove(struct platform_device *pdev)
1250 {
1251         struct regulator_dev *rdev = platform_get_drvdata(pdev);
1252         struct twlreg_info *info = rdev->reg_data;
1253
1254         regulator_unregister(rdev);
1255         kfree(info);
1256         return 0;
1257 }
1258
1259 MODULE_ALIAS("platform:twl_reg");
1260
1261 static struct platform_driver twlreg_driver = {
1262         .probe          = twlreg_probe,
1263         .remove         = __devexit_p(twlreg_remove),
1264         /* NOTE: short name, to work around driver model truncation of
1265          * "twl_regulator.12" (and friends) to "twl_regulator.1".
1266          */
1267         .driver  = {
1268                 .name  = "twl_reg",
1269                 .owner = THIS_MODULE,
1270                 .of_match_table = of_match_ptr(twl_of_match),
1271         },
1272 };
1273
1274 static int __init twlreg_init(void)
1275 {
1276         return platform_driver_register(&twlreg_driver);
1277 }
1278 subsys_initcall(twlreg_init);
1279
1280 static void __exit twlreg_exit(void)
1281 {
1282         platform_driver_unregister(&twlreg_driver);
1283 }
1284 module_exit(twlreg_exit)
1285
1286 MODULE_DESCRIPTION("TWL regulator driver");
1287 MODULE_LICENSE("GPL");