drivers/regulator/twl-regulator.c

   1 /*
   2  * twl-regulator.c -- support regulators in twl4030/twl6030 family chips
   3  *
   4  * Copyright (C) 2008 David Brownell
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/string.h>
  14 #include <linux/slab.h>
  15 #include <linux/init.h>
  16 #include <linux/err.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/of.h>
  19 #include <linux/of_device.h>
  20 #include <linux/regulator/driver.h>
  21 #include <linux/regulator/machine.h>
  22 #include <linux/regulator/of_regulator.h>
  23 #include <linux/i2c/twl.h>
  24 #include <linux/delay.h>
  25
  26 /*
  27  * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
  28  * USB OTG transceiver, an RTC, ADC, PWM, and lots more.  Some versions
  29  * include an audio codec, battery charger, and more voltage regulators.
  30  * These chips are often used in OMAP-based systems.
  31  *
  32  * This driver implements software-based resource control for various
  33  * voltage regulators.  This is usually augmented with state machine
  34  * based control.
  35  */
  36
  37 struct twlreg_info {
  38         /* start of regulator's PM_RECEIVER control register bank */
  39         u8                      base;
  40
  41         /* twl resource ID, for resource control state machine */
  42         u8                      id;
  43
  44         /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
  45         u8                      table_len;
  46         const u16               *table;
  47
  48         /* State REMAP default configuration */
  49         u8                      remap;
  50
  51         /* chip constraints on regulator behavior */
  52         u16                     min_mV;
  53         u16                     max_mV;
  54
  55         u8                      flags;
  56
  57         /* used by regulator core */
  58         struct regulator_desc   desc;
  59
  60         /* chip specific features */
  61         unsigned long           features;
  62
  63         /*
  64          * optional override functions for voltage set/get
  65          * these are currently only used for SMPS regulators
  66          */
  67         int                     (*get_voltage)(void *data);
  68         int                     (*set_voltage)(void *data, int target_uV);
  69
  70         /* data passed from board for external get/set voltage */
  71         void                    *data;
  72 };
  73
  74
  75 /* LDO control registers ... offset is from the base of its register bank.
  76  * The first three registers of all power resource banks help hardware to
  77  * manage the various resource groups.
  78  */
  79 /* Common offset in TWL4030/6030 */
  80 #define VREG_GRP                0
  81 /* TWL4030 register offsets */
  82 #define VREG_TYPE               1
  83 #define VREG_REMAP              2
  84 #define VREG_DEDICATED          3       /* LDO control */
  85 #define VREG_VOLTAGE_SMPS_4030  9
  86 /* TWL6030 register offsets */
  87 #define VREG_TRANS              1
  88 #define VREG_STATE              2
  89 #define VREG_VOLTAGE            3
  90 #define VREG_VOLTAGE_SMPS       4
  91 /* TWL6030 Misc register offsets */
  92 #define VREG_BC_ALL             1
  93 #define VREG_BC_REF             2
  94 #define VREG_BC_PROC            3
  95 #define VREG_BC_CLK_RST         4
  96
  97 /* TWL6030 LDO register values for CFG_STATE */
  98 #define TWL6030_CFG_STATE_OFF   0x00
  99 #define TWL6030_CFG_STATE_ON    0x01
 100 #define TWL6030_CFG_STATE_OFF2  0x02
 101 #define TWL6030_CFG_STATE_SLEEP 0x03
 102 #define TWL6030_CFG_STATE_GRP_SHIFT     5
 103 #define TWL6030_CFG_STATE_APP_SHIFT     2
 104 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
 105 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
 106                                                 TWL6030_CFG_STATE_APP_SHIFT)
 107
 108 /* Flags for SMPS Voltage reading */
 109 #define SMPS_OFFSET_EN          BIT(0)
 110 #define SMPS_EXTENDED_EN        BIT(1)
 111
 112 /* twl6032 SMPS EPROM values */
 113 #define TWL6030_SMPS_OFFSET             0xB0
 114 #define TWL6030_SMPS_MULT               0xB3
 115 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
 116 #define SMPS_MULTOFFSET_VIO     BIT(1)
 117 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
 118
 119 static inline int
 120 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
 121 {
 122         u8 value;
 123         int status;
 124
 125         status = twl_i2c_read_u8(slave_subgp,
 126                         &value, info->base + offset);
 127         return (status < 0) ? status : value;
 128 }
 129
 130 static inline int
 131 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
 132                                                  u8 value)
 133 {
 134         return twl_i2c_write_u8(slave_subgp,
 135                         value, info->base + offset);
 136 }
 137
 138 /*----------------------------------------------------------------------*/
 139
 140 /* generic power resource operations, which work on all regulators */
 141
 142 static int twlreg_grp(struct regulator_dev *rdev)
 143 {
 144         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
 145                                                                  VREG_GRP);
 146 }
 147
 148 /*
 149  * Enable/disable regulators by joining/leaving the P1 (processor) group.
 150  * We assume nobody else is updating the DEV_GRP registers.
 151  */
 152 /* definition for 4030 family */
 153 #define P3_GRP_4030     BIT(7)          /* "peripherals" */
 154 #define P2_GRP_4030     BIT(6)          /* secondary processor, modem, etc */
 155 #define P1_GRP_4030     BIT(5)          /* CPU/Linux */
 156 /* definition for 6030 family */
 157 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
 158 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
 159 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
 160
 161 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
 162 {
 163         int     state = twlreg_grp(rdev);
 164
 165         if (state < 0)
 166                 return state;
 167
 168         return state & P1_GRP_4030;
 169 }
 170
 171 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
 172 {
 173         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 174         int                     grp = 0, val;
 175
 176         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
 177                 grp = twlreg_grp(rdev);
 178                 if (grp < 0)
 179                         return grp;
 180                 grp &= P1_GRP_6030;
 181         } else {
 182                 grp = 1;
 183         }
 184
 185         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 186         val = TWL6030_CFG_STATE_APP(val);
 187
 188         return grp && (val == TWL6030_CFG_STATE_ON);
 189 }
 190
 191 #define PB_I2C_BUSY     BIT(0)
 192 #define PB_I2C_BWEN     BIT(1)
 193
 194 /* Wait until buffer empty/ready to send a word on power bus. */
 195 static int twl4030_wait_pb_ready(void)
 196 {
 197
 198         int     ret;
 199         int     timeout = 10;
 200         u8      val;
 201
 202         do {
 203                 ret = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val,
 204                                       TWL4030_PM_MASTER_PB_CFG);
 205                 if (ret < 0)
 206                         return ret;
 207
 208                 if (!(val & PB_I2C_BUSY))
 209                         return 0;
 210
 211                 mdelay(1);
 212                 timeout--;
 213         } while (timeout);
 214
 215         return -ETIMEDOUT;
 216 }
 217
 218 /* Send a word over the powerbus */
 219 static int twl4030_send_pb_msg(unsigned msg)
 220 {
 221         u8      val;
 222         int     ret;
 223
 224         /* save powerbus configuration */
 225         ret = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val,
 226                               TWL4030_PM_MASTER_PB_CFG);
 227         if (ret < 0)
 228                 return ret;
 229
 230         /* Enable i2c access to powerbus */
 231         ret = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val | PB_I2C_BWEN,
 232                                TWL4030_PM_MASTER_PB_CFG);
 233         if (ret < 0)
 234                 return ret;
 235
 236         ret = twl4030_wait_pb_ready();
 237         if (ret < 0)
 238                 return ret;
 239
 240         ret = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, msg >> 8,
 241                                TWL4030_PM_MASTER_PB_WORD_MSB);
 242         if (ret < 0)
 243                 return ret;
 244
 245         ret = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, msg & 0xff,
 246                                TWL4030_PM_MASTER_PB_WORD_LSB);
 247         if (ret < 0)
 248                 return ret;
 249
 250         ret = twl4030_wait_pb_ready();
 251         if (ret < 0)
 252                 return ret;
 253
 254         /* Restore powerbus configuration */
 255         return twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val,
 256                                 TWL4030_PM_MASTER_PB_CFG);
 257 }
 258
 259 static int twl4030reg_enable(struct regulator_dev *rdev)
 260 {
 261         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 262         int                     grp;
 263         int                     ret;
 264
 265         grp = twlreg_grp(rdev);
 266         if (grp < 0)
 267                 return grp;
 268
 269         grp |= P1_GRP_4030;
 270
 271         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
 272
 273         return ret;
 274 }
 275
 276 static int twl6030reg_enable(struct regulator_dev *rdev)
 277 {
 278         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 279         int                     grp = 0;
 280         int                     ret;
 281
 282         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 283                 grp = twlreg_grp(rdev);
 284         if (grp < 0)
 285                 return grp;
 286
 287         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 288                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
 289                         TWL6030_CFG_STATE_ON);
 290         return ret;
 291 }
 292
 293 static int twl4030reg_disable(struct regulator_dev *rdev)
 294 {
 295         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 296         int                     grp;
 297         int                     ret;
 298
 299         grp = twlreg_grp(rdev);
 300         if (grp < 0)
 301                 return grp;
 302
 303         grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
 304
 305         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
 306
 307         return ret;
 308 }
 309
 310 static int twl6030reg_disable(struct regulator_dev *rdev)
 311 {
 312         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 313         int                     grp = 0;
 314         int                     ret;
 315
 316         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 317                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
 318
 319         /* For 6030, set the off state for all grps enabled */
 320         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 321                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
 322                         TWL6030_CFG_STATE_OFF);
 323
 324         return ret;
 325 }
 326
 327 static int twl4030reg_get_status(struct regulator_dev *rdev)
 328 {
 329         int     state = twlreg_grp(rdev);
 330
 331         if (state < 0)
 332                 return state;
 333         state &= 0x0f;
 334
 335         /* assume state != WARM_RESET; we'd not be running...  */
 336         if (!state)
 337                 return REGULATOR_STATUS_OFF;
 338         return (state & BIT(3))
 339                 ? REGULATOR_STATUS_NORMAL
 340                 : REGULATOR_STATUS_STANDBY;
 341 }
 342
 343 static int twl6030reg_get_status(struct regulator_dev *rdev)
 344 {
 345         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 346         int                     val;
 347
 348         val = twlreg_grp(rdev);
 349         if (val < 0)
 350                 return val;
 351
 352         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 353
 354         switch (TWL6030_CFG_STATE_APP(val)) {
 355         case TWL6030_CFG_STATE_ON:
 356                 return REGULATOR_STATUS_NORMAL;
 357
 358         case TWL6030_CFG_STATE_SLEEP:
 359                 return REGULATOR_STATUS_STANDBY;
 360
 361         case TWL6030_CFG_STATE_OFF:
 362         case TWL6030_CFG_STATE_OFF2:
 363         default:
 364                 break;
 365         }
 366
 367         return REGULATOR_STATUS_OFF;
 368 }
 369
 370 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 371 {
 372         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 373         unsigned                message;
 374
 375         /* We can only set the mode through state machine commands... */
 376         switch (mode) {
 377         case REGULATOR_MODE_NORMAL:
 378                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
 379                 break;
 380         case REGULATOR_MODE_STANDBY:
 381                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
 382                 break;
 383         default:
 384                 return -EINVAL;
 385         }
 386
 387         return twl4030_send_pb_msg(message);
 388 }
 389
 390 static inline unsigned int twl4030reg_map_mode(unsigned int mode)
 391 {
 392         switch (mode) {
 393         case RES_STATE_ACTIVE:
 394                 return REGULATOR_MODE_NORMAL;
 395         case RES_STATE_SLEEP:
 396                 return REGULATOR_MODE_STANDBY;
 397         default:
 398                 return -EINVAL;
 399         }
 400 }
 401
 402 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 403 {
 404         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 405         int grp = 0;
 406         int val;
 407
 408         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 409                 grp = twlreg_grp(rdev);
 410
 411         if (grp < 0)
 412                 return grp;
 413
 414         /* Compose the state register settings */
 415         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
 416         /* We can only set the mode through state machine commands... */
 417         switch (mode) {
 418         case REGULATOR_MODE_NORMAL:
 419                 val |= TWL6030_CFG_STATE_ON;
 420                 break;
 421         case REGULATOR_MODE_STANDBY:
 422                 val |= TWL6030_CFG_STATE_SLEEP;
 423                 break;
 424
 425         default:
 426                 return -EINVAL;
 427         }
 428
 429         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
 430 }
 431
 432 /*----------------------------------------------------------------------*/
 433
 434 /*
 435  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
 436  * select field in its control register.   We use tables indexed by VSEL
 437  * to record voltages in milliVolts.  (Accuracy is about three percent.)
 438  *
 439  * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
 440  * currently handled by listing two slightly different VAUX2 regulators,
 441  * only one of which will be configured.
 442  *
 443  * VSEL values documented as "TI cannot support these values" are flagged
 444  * in these tables as UNSUP() values; we normally won't assign them.
 445  *
 446  * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
 447  * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
 448  */
 449 #define UNSUP_MASK      0x8000
 450
 451 #define UNSUP(x)        (UNSUP_MASK | (x))
 452 #define IS_UNSUP(info, x)                       \
 453         ((UNSUP_MASK & (x)) &&                  \
 454          !((info)->features & TWL4030_ALLOW_UNSUPPORTED))
 455 #define LDO_MV(x)       (~UNSUP_MASK & (x))
 456
 457
 458 static const u16 VAUX1_VSEL_table[] = {
 459         UNSUP(1500), UNSUP(1800), 2500, 2800,
 460         3000, 3000, 3000, 3000,
 461 };
 462 static const u16 VAUX2_4030_VSEL_table[] = {
 463         UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
 464         1500, 1800, UNSUP(1850), 2500,
 465         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
 466         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
 467 };
 468 static const u16 VAUX2_VSEL_table[] = {
 469         1700, 1700, 1900, 1300,
 470         1500, 1800, 2000, 2500,
 471         2100, 2800, 2200, 2300,
 472         2400, 2400, 2400, 2400,
 473 };
 474 static const u16 VAUX3_VSEL_table[] = {
 475         1500, 1800, 2500, 2800,
 476         3000, 3000, 3000, 3000,
 477 };
 478 static const u16 VAUX4_VSEL_table[] = {
 479         700, 1000, 1200, UNSUP(1300),
 480         1500, 1800, UNSUP(1850), 2500,
 481         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
 482         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
 483 };
 484 static const u16 VMMC1_VSEL_table[] = {
 485         1850, 2850, 3000, 3150,
 486 };
 487 static const u16 VMMC2_VSEL_table[] = {
 488         UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
 489         UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
 490         2600, 2800, 2850, 3000,
 491         3150, 3150, 3150, 3150,
 492 };
 493 static const u16 VPLL1_VSEL_table[] = {
 494         1000, 1200, 1300, 1800,
 495         UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
 496 };
 497 static const u16 VPLL2_VSEL_table[] = {
 498         700, 1000, 1200, 1300,
 499         UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
 500         UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
 501         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
 502 };
 503 static const u16 VSIM_VSEL_table[] = {
 504         UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
 505         2800, 3000, 3000, 3000,
 506 };
 507 static const u16 VDAC_VSEL_table[] = {
 508         1200, 1300, 1800, 1800,
 509 };
 510 static const u16 VIO_VSEL_table[] = {
 511         1800, 1850,
 512 };
 513 static const u16 VINTANA2_VSEL_table[] = {
 514         2500, 2750,
 515 };
 516
 517 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
 518 {
 519         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 520         int                     mV = info->table[index];
 521
 522         return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000);
 523 }
 524
 525 static int
 526 twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 527 {
 528         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 529
 530         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
 531                             selector);
 532 }
 533
 534 static int twl4030ldo_get_voltage_sel(struct regulator_dev *rdev)
 535 {
 536         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 537         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
 538
 539         if (vsel < 0)
 540                 return vsel;
 541
 542         vsel &= info->table_len - 1;
 543         return vsel;
 544 }
 545
 546 static struct regulator_ops twl4030ldo_ops = {
 547         .list_voltage   = twl4030ldo_list_voltage,
 548
 549         .set_voltage_sel = twl4030ldo_set_voltage_sel,
 550         .get_voltage_sel = twl4030ldo_get_voltage_sel,
 551
 552         .enable         = twl4030reg_enable,
 553         .disable        = twl4030reg_disable,
 554         .is_enabled     = twl4030reg_is_enabled,
 555
 556         .set_mode       = twl4030reg_set_mode,
 557
 558         .get_status     = twl4030reg_get_status,
 559 };
 560
 561 static int
 562 twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
 563                         unsigned *selector)
 564 {
 565         struct twlreg_info *info = rdev_get_drvdata(rdev);
 566         int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 567
 568         if (info->set_voltage) {
 569                 return info->set_voltage(info->data, min_uV);
 570         } else {
 571                 twlreg_write(info, TWL_MODULE_PM_RECEIVER,
 572                         VREG_VOLTAGE_SMPS_4030, vsel);
 573         }
 574
 575         return 0;
 576 }
 577
 578 static int twl4030smps_get_voltage(struct regulator_dev *rdev)
 579 {
 580         struct twlreg_info *info = rdev_get_drvdata(rdev);
 581         int vsel;
 582
 583         if (info->get_voltage)
 584                 return info->get_voltage(info->data);
 585
 586         vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
 587                 VREG_VOLTAGE_SMPS_4030);
 588
 589         return vsel * 12500 + 600000;
 590 }
 591
 592 static struct regulator_ops twl4030smps_ops = {
 593         .set_voltage    = twl4030smps_set_voltage,
 594         .get_voltage    = twl4030smps_get_voltage,
 595 };
 596
 597 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
 598         int max_uV, unsigned *selector)
 599 {
 600         struct twlreg_info *info = rdev_get_drvdata(rdev);
 601
 602         if (info->set_voltage)
 603                 return info->set_voltage(info->data, min_uV);
 604
 605         return -ENODEV;
 606 }
 607
 608 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
 609 {
 610         struct twlreg_info *info = rdev_get_drvdata(rdev);
 611
 612         if (info->get_voltage)
 613                 return info->get_voltage(info->data);
 614
 615         return -ENODEV;
 616 }
 617
 618 static struct regulator_ops twl6030coresmps_ops = {
 619         .set_voltage    = twl6030coresmps_set_voltage,
 620         .get_voltage    = twl6030coresmps_get_voltage,
 621 };
 622
 623 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
 624 {
 625         struct twlreg_info *info = rdev_get_drvdata(rdev);
 626
 627         switch (sel) {
 628         case 0:
 629                 return 0;
 630         case 1 ... 24:
 631                 /* Linear mapping from 00000001 to 00011000:
 632                  * Absolute voltage value = 1.0 V + 0.1 V × (sel – 00000001)
 633                  */
 634                 return (info->min_mV + 100 * (sel - 1)) * 1000;
 635         case 25 ... 30:
 636                 return -EINVAL;
 637         case 31:
 638                 return 2750000;
 639         default:
 640                 return -EINVAL;
 641         }
 642 }
 643
 644 static int
 645 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 646 {
 647         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 648
 649         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
 650                             selector);
 651 }
 652
 653 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
 654 {
 655         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 656         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
 657
 658         return vsel;
 659 }
 660
 661 static struct regulator_ops twl6030ldo_ops = {
 662         .list_voltage   = twl6030ldo_list_voltage,
 663
 664         .set_voltage_sel = twl6030ldo_set_voltage_sel,
 665         .get_voltage_sel = twl6030ldo_get_voltage_sel,
 666
 667         .enable         = twl6030reg_enable,
 668         .disable        = twl6030reg_disable,
 669         .is_enabled     = twl6030reg_is_enabled,
 670
 671         .set_mode       = twl6030reg_set_mode,
 672
 673         .get_status     = twl6030reg_get_status,
 674 };
 675
 676 /*----------------------------------------------------------------------*/
 677
 678 static struct regulator_ops twl4030fixed_ops = {
 679         .list_voltage   = regulator_list_voltage_linear,
 680
 681         .enable         = twl4030reg_enable,
 682         .disable        = twl4030reg_disable,
 683         .is_enabled     = twl4030reg_is_enabled,
 684
 685         .set_mode       = twl4030reg_set_mode,
 686
 687         .get_status     = twl4030reg_get_status,
 688 };
 689
 690 static struct regulator_ops twl6030fixed_ops = {
 691         .list_voltage   = regulator_list_voltage_linear,
 692
 693         .enable         = twl6030reg_enable,
 694         .disable        = twl6030reg_disable,
 695         .is_enabled     = twl6030reg_is_enabled,
 696
 697         .set_mode       = twl6030reg_set_mode,
 698
 699         .get_status     = twl6030reg_get_status,
 700 };
 701
 702 /*
 703  * SMPS status and control
 704  */
 705
 706 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
 707 {
 708         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 709
 710         int voltage = 0;
 711
 712         switch (info->flags) {
 713         case SMPS_OFFSET_EN:
 714                 voltage = 100000;
 715                 /* fall through */
 716         case 0:
 717                 switch (index) {
 718                 case 0:
 719                         voltage = 0;
 720                         break;
 721                 case 58:
 722                         voltage = 1350 * 1000;
 723                         break;
 724                 case 59:
 725                         voltage = 1500 * 1000;
 726                         break;
 727                 case 60:
 728                         voltage = 1800 * 1000;
 729                         break;
 730                 case 61:
 731                         voltage = 1900 * 1000;
 732                         break;
 733                 case 62:
 734                         voltage = 2100 * 1000;
 735                         break;
 736                 default:
 737                         voltage += (600000 + (12500 * (index - 1)));
 738                 }
 739                 break;
 740         case SMPS_EXTENDED_EN:
 741                 switch (index) {
 742                 case 0:
 743                         voltage = 0;
 744                         break;
 745                 case 58:
 746                         voltage = 2084 * 1000;
 747                         break;
 748                 case 59:
 749                         voltage = 2315 * 1000;
 750                         break;
 751                 case 60:
 752                         voltage = 2778 * 1000;
 753                         break;
 754                 case 61:
 755                         voltage = 2932 * 1000;
 756                         break;
 757                 case 62:
 758                         voltage = 3241 * 1000;
 759                         break;
 760                 default:
 761                         voltage = (1852000 + (38600 * (index - 1)));
 762                 }
 763                 break;
 764         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
 765                 switch (index) {
 766                 case 0:
 767                         voltage = 0;
 768                         break;
 769                 case 58:
 770                         voltage = 4167 * 1000;
 771                         break;
 772                 case 59:
 773                         voltage = 2315 * 1000;
 774                         break;
 775                 case 60:
 776                         voltage = 2778 * 1000;
 777                         break;
 778                 case 61:
 779                         voltage = 2932 * 1000;
 780                         break;
 781                 case 62:
 782                         voltage = 3241 * 1000;
 783                         break;
 784                 default:
 785                         voltage = (2161000 + (38600 * (index - 1)));
 786                 }
 787                 break;
 788         }
 789
 790         return voltage;
 791 }
 792
 793 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
 794                                    int max_uV)
 795 {
 796         struct twlreg_info *info = rdev_get_drvdata(rdev);
 797         int vsel = 0;
 798
 799         switch (info->flags) {
 800         case 0:
 801                 if (min_uV == 0)
 802                         vsel = 0;
 803                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
 804                         vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 805                         vsel++;
 806                 }
 807                 /* Values 1..57 for vsel are linear and can be calculated
 808                  * values 58..62 are non linear.
 809                  */
 810                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 811                         vsel = 62;
 812                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 813                         vsel = 61;
 814                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 815                         vsel = 60;
 816                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 817                         vsel = 59;
 818                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
 819                         vsel = 58;
 820                 else
 821                         return -EINVAL;
 822                 break;
 823         case SMPS_OFFSET_EN:
 824                 if (min_uV == 0)
 825                         vsel = 0;
 826                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
 827                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
 828                         vsel++;
 829                 }
 830                 /* Values 1..57 for vsel are linear and can be calculated
 831                  * values 58..62 are non linear.
 832                  */
 833                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 834                         vsel = 62;
 835                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 836                         vsel = 61;
 837                 else if ((min_uV > 1350000) && (min_uV <= 1800000))
 838                         vsel = 60;
 839                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 840                         vsel = 59;
 841                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
 842                         vsel = 58;
 843                 else
 844                         return -EINVAL;
 845                 break;
 846         case SMPS_EXTENDED_EN:
 847                 if (min_uV == 0) {
 848                         vsel = 0;
 849                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
 850                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
 851                         vsel++;
 852                 }
 853                 break;
 854         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
 855                 if (min_uV == 0) {
 856                         vsel = 0;
 857                 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
 858                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
 859                         vsel++;
 860                 }
 861                 break;
 862         }
 863
 864         return vsel;
 865 }
 866
 867 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
 868                                        unsigned int selector)
 869 {
 870         struct twlreg_info *info = rdev_get_drvdata(rdev);
 871
 872         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
 873                             selector);
 874 }
 875
 876 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
 877 {
 878         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 879
 880         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
 881 }
 882
 883 static struct regulator_ops twlsmps_ops = {
 884         .list_voltage           = twl6030smps_list_voltage,
 885         .map_voltage            = twl6030smps_map_voltage,
 886
 887         .set_voltage_sel        = twl6030smps_set_voltage_sel,
 888         .get_voltage_sel        = twl6030smps_get_voltage_sel,
 889
 890         .enable                 = twl6030reg_enable,
 891         .disable                = twl6030reg_disable,
 892         .is_enabled             = twl6030reg_is_enabled,
 893
 894         .set_mode               = twl6030reg_set_mode,
 895
 896         .get_status             = twl6030reg_get_status,
 897 };
 898
 899 /*----------------------------------------------------------------------*/
 900
 901 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
 902                         remap_conf) \
 903                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
 904                         remap_conf, TWL4030, twl4030fixed_ops, \
 905                         twl4030reg_map_mode)
 906 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
 907                 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
 908                         0x0, TWL6030, twl6030fixed_ops, NULL)
 909
 910 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
 911 static const struct twlreg_info TWL4030_INFO_##label = { \
 912         .base = offset, \
 913         .id = num, \
 914         .table_len = ARRAY_SIZE(label##_VSEL_table), \
 915         .table = label##_VSEL_table, \
 916         .remap = remap_conf, \
 917         .desc = { \
 918                 .name = #label, \
 919                 .id = TWL4030_REG_##label, \
 920                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
 921                 .ops = &twl4030ldo_ops, \
 922                 .type = REGULATOR_VOLTAGE, \
 923                 .owner = THIS_MODULE, \
 924                 .enable_time = turnon_delay, \
 925                 .of_map_mode = twl4030reg_map_mode, \
 926                 }, \
 927         }
 928
 929 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
 930 static const struct twlreg_info TWL4030_INFO_##label = { \
 931         .base = offset, \
 932         .id = num, \
 933         .remap = remap_conf, \
 934         .desc = { \
 935                 .name = #label, \
 936                 .id = TWL4030_REG_##label, \
 937                 .ops = &twl4030smps_ops, \
 938                 .type = REGULATOR_VOLTAGE, \
 939                 .owner = THIS_MODULE, \
 940                 .enable_time = turnon_delay, \
 941                 .of_map_mode = twl4030reg_map_mode, \
 942                 }, \
 943         }
 944
 945 #define TWL6030_ADJUSTABLE_SMPS(label) \
 946 static const struct twlreg_info TWL6030_INFO_##label = { \
 947         .desc = { \
 948                 .name = #label, \
 949                 .id = TWL6030_REG_##label, \
 950                 .ops = &twl6030coresmps_ops, \
 951                 .type = REGULATOR_VOLTAGE, \
 952                 .owner = THIS_MODULE, \
 953                 }, \
 954         }
 955
 956 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
 957 static const struct twlreg_info TWL6030_INFO_##label = { \
 958         .base = offset, \
 959         .min_mV = min_mVolts, \
 960         .max_mV = max_mVolts, \
 961         .desc = { \
 962                 .name = #label, \
 963                 .id = TWL6030_REG_##label, \
 964                 .n_voltages = 32, \
 965                 .ops = &twl6030ldo_ops, \
 966                 .type = REGULATOR_VOLTAGE, \
 967                 .owner = THIS_MODULE, \
 968                 }, \
 969         }
 970
 971 #define TWL6032_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
 972 static const struct twlreg_info TWL6032_INFO_##label = { \
 973         .base = offset, \
 974         .min_mV = min_mVolts, \
 975         .max_mV = max_mVolts, \
 976         .desc = { \
 977                 .name = #label, \
 978                 .id = TWL6032_REG_##label, \
 979                 .n_voltages = 32, \
 980                 .ops = &twl6030ldo_ops, \
 981                 .type = REGULATOR_VOLTAGE, \
 982                 .owner = THIS_MODULE, \
 983                 }, \
 984         }
 985
 986 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
 987                 family, operations, map_mode) \
 988 static const struct twlreg_info TWLFIXED_INFO_##label = { \
 989         .base = offset, \
 990         .id = num, \
 991         .min_mV = mVolts, \
 992         .remap = remap_conf, \
 993         .desc = { \
 994                 .name = #label, \
 995                 .id = family##_REG_##label, \
 996                 .n_voltages = 1, \
 997                 .ops = &operations, \
 998                 .type = REGULATOR_VOLTAGE, \
 999                 .owner = THIS_MODULE, \
1000                 .min_uV = mVolts * 1000, \
1001                 .enable_time = turnon_delay, \
1002                 .of_map_mode = map_mode, \
1003                 }, \
1004         }
1005
1006 #define TWL6032_ADJUSTABLE_SMPS(label, offset) \
1007 static const struct twlreg_info TWLSMPS_INFO_##label = { \
1008         .base = offset, \
1009         .min_mV = 600, \
1010         .max_mV = 2100, \
1011         .desc = { \
1012                 .name = #label, \
1013                 .id = TWL6032_REG_##label, \
1014                 .n_voltages = 63, \
1015                 .ops = &twlsmps_ops, \
1016                 .type = REGULATOR_VOLTAGE, \
1017                 .owner = THIS_MODULE, \
1018                 }, \
1019         }
1020
1021 /*
1022  * We list regulators here if systems need some level of
1023  * software control over them after boot.
1024  */
1025 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
1026 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
1027 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
1028 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
1029 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
1030 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
1031 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
1032 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
1033 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
1034 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
1035 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
1036 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
1037 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
1038 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
1039 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
1040 /* VUSBCP is managed *only* by the USB subchip */
1041 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
1042 /* Turnon-delay and remap configuration values for 6030 are not
1043    verified since the specification is not public */
1044 TWL6030_ADJUSTABLE_SMPS(VDD1);
1045 TWL6030_ADJUSTABLE_SMPS(VDD2);
1046 TWL6030_ADJUSTABLE_SMPS(VDD3);
1047 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
1048 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
1049 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
1050 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
1051 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
1052 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
1053 /* 6025 are renamed compared to 6030 versions */
1054 TWL6032_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
1055 TWL6032_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
1056 TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
1057 TWL6032_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
1058 TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
1059 TWL6032_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
1060 TWL6032_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
1061 TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
1062 TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
1063 TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08);
1064 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
1065 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
1066 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
1067 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
1068 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
1069 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1070 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1071 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1072 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1073 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1074 TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
1075 TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
1076 TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
1077
1078 static u8 twl_get_smps_offset(void)
1079 {
1080         u8 value;
1081
1082         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1083                         TWL6030_SMPS_OFFSET);
1084         return value;
1085 }
1086
1087 static u8 twl_get_smps_mult(void)
1088 {
1089         u8 value;
1090
1091         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1092                         TWL6030_SMPS_MULT);
1093         return value;
1094 }
1095
1096 #define TWL_OF_MATCH(comp, family, label) \
1097         { \
1098                 .compatible = comp, \
1099                 .data = &family##_INFO_##label, \
1100         }
1101
1102 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1103 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1104 #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
1105 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1106 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1107
1108 static const struct of_device_id twl_of_match[] = {
1109         TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1110         TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1111         TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1112         TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1113         TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1114         TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1115         TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1116         TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1117         TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1118         TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1119         TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1120         TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1121         TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1122         TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1123         TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1124         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1125         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1126         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1127         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1128         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1129         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1130         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1131         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1132         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1133         TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
1134         TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
1135         TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
1136         TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
1137         TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
1138         TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
1139         TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
1140         TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
1141         TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
1142         TWLFIXED_OF_MATCH("ti,twl4030-vintana1", VINTANA1),
1143         TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1144         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1145         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1146         TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1147         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1148         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1149         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1150         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1151         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1152         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1153         TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
1154         TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
1155         TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
1156         {},
1157 };
1158 MODULE_DEVICE_TABLE(of, twl_of_match);
1159
1160 static int twlreg_probe(struct platform_device *pdev)
1161 {
1162         int                             i, id;
1163         struct twlreg_info              *info;
1164         const struct twlreg_info        *template;
1165         struct regulator_init_data      *initdata;
1166         struct regulation_constraints   *c;
1167         struct regulator_dev            *rdev;
1168         struct twl_regulator_driver_data        *drvdata;
1169         const struct of_device_id       *match;
1170         struct regulator_config         config = { };
1171
1172         match = of_match_device(twl_of_match, &pdev->dev);
1173         if (match) {
1174                 template = match->data;
1175                 id = template->desc.id;
1176                 initdata = of_get_regulator_init_data(&pdev->dev,
1177                                                       pdev->dev.of_node,
1178                                                       &template->desc);
1179                 drvdata = NULL;
1180         } else {
1181                 id = pdev->id;
1182                 initdata = dev_get_platdata(&pdev->dev);
1183                 for (i = 0, template = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1184                         template = twl_of_match[i].data;
1185                         if (template && template->desc.id == id)
1186                                 break;
1187                 }
1188                 if (i == ARRAY_SIZE(twl_of_match))
1189                         return -ENODEV;
1190
1191                 drvdata = initdata->driver_data;
1192                 if (!drvdata)
1193                         return -EINVAL;
1194         }
1195
1196         if (!template)
1197                 return -ENODEV;
1198
1199         if (!initdata)
1200                 return -EINVAL;
1201
1202         info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
1203         if (!info)
1204                 return -ENOMEM;
1205
1206         if (drvdata) {
1207                 /* copy the driver data into regulator data */
1208                 info->features = drvdata->features;
1209                 info->data = drvdata->data;
1210                 info->set_voltage = drvdata->set_voltage;
1211                 info->get_voltage = drvdata->get_voltage;
1212         }
1213
1214         /* Constrain board-specific capabilities according to what
1215          * this driver and the chip itself can actually do.
1216          */
1217         c = &initdata->constraints;
1218         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1219         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1220                                 | REGULATOR_CHANGE_MODE
1221                                 | REGULATOR_CHANGE_STATUS;
1222         switch (id) {
1223         case TWL4030_REG_VIO:
1224         case TWL4030_REG_VDD1:
1225         case TWL4030_REG_VDD2:
1226         case TWL4030_REG_VPLL1:
1227         case TWL4030_REG_VINTANA1:
1228         case TWL4030_REG_VINTANA2:
1229         case TWL4030_REG_VINTDIG:
1230                 c->always_on = true;
1231                 break;
1232         default:
1233                 break;
1234         }
1235
1236         switch (id) {
1237         case TWL6032_REG_SMPS3:
1238                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1239                         info->flags |= SMPS_EXTENDED_EN;
1240                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1241                         info->flags |= SMPS_OFFSET_EN;
1242                 break;
1243         case TWL6032_REG_SMPS4:
1244                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1245                         info->flags |= SMPS_EXTENDED_EN;
1246                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1247                         info->flags |= SMPS_OFFSET_EN;
1248                 break;
1249         case TWL6032_REG_VIO:
1250                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1251                         info->flags |= SMPS_EXTENDED_EN;
1252                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1253                         info->flags |= SMPS_OFFSET_EN;
1254                 break;
1255         }
1256
1257         config.dev = &pdev->dev;
1258         config.init_data = initdata;
1259         config.driver_data = info;
1260         config.of_node = pdev->dev.of_node;
1261
1262         rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
1263         if (IS_ERR(rdev)) {
1264                 dev_err(&pdev->dev, "can't register %s, %ld\n",
1265                                 info->desc.name, PTR_ERR(rdev));
1266                 return PTR_ERR(rdev);
1267         }
1268         platform_set_drvdata(pdev, rdev);
1269
1270         if (twl_class_is_4030())
1271                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1272                                                 info->remap);
1273
1274         /* NOTE:  many regulators support short-circuit IRQs (presentable
1275          * as REGULATOR_OVER_CURRENT notifications?) configured via:
1276          *  - SC_CONFIG
1277          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1278          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1279          *  - IT_CONFIG
1280          */
1281
1282         return 0;
1283 }
1284
1285 MODULE_ALIAS("platform:twl_reg");
1286
1287 static struct platform_driver twlreg_driver = {
1288         .probe          = twlreg_probe,
1289         /* NOTE: short name, to work around driver model truncation of
1290          * "twl_regulator.12" (and friends) to "twl_regulator.1".
1291          */
1292         .driver  = {
1293                 .name  = "twl_reg",
1294                 .of_match_table = of_match_ptr(twl_of_match),
1295         },
1296 };
1297
1298 static int __init twlreg_init(void)
1299 {
1300         return platform_driver_register(&twlreg_driver);
1301 }
1302 subsys_initcall(twlreg_init);
1303
1304 static void __exit twlreg_exit(void)
1305 {
1306         platform_driver_unregister(&twlreg_driver);
1307 }
1308 module_exit(twlreg_exit)
1309
1310 MODULE_DESCRIPTION("TWL regulator driver");
1311 MODULE_LICENSE("GPL");