drivers/regulator/tps65912-regulator.c

   1 /*
   2  * tps65912.c  --  TI tps65912
   3  *
   4  * Copyright 2011 Texas Instruments Inc.
   5  *
   6  * Author: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify it
   9  *  under  the terms of the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the License, or (at your
  11  *  option) any later version.
  12  *
  13  * This driver is based on wm8350 implementation.
  14  */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/module.h>
  18 #include <linux/init.h>
  19 #include <linux/err.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/regulator/driver.h>
  22 #include <linux/regulator/machine.h>
  23 #include <linux/delay.h>
  24 #include <linux/slab.h>
  25 #include <linux/gpio.h>
  26 #include <linux/mfd/tps65912.h>
  27
  28 /* DCDC's */
  29 #define TPS65912_REG_DCDC1      0
  30 #define TPS65912_REG_DCDC2      1
  31 #define TPS65912_REG_DCDC3      2
  32 #define TPS65912_REG_DCDC4      3
  33
  34 /* LDOs */
  35 #define TPS65912_REG_LDO1       4
  36 #define TPS65912_REG_LDO2       5
  37 #define TPS65912_REG_LDO3       6
  38 #define TPS65912_REG_LDO4       7
  39 #define TPS65912_REG_LDO5       8
  40 #define TPS65912_REG_LDO6       9
  41 #define TPS65912_REG_LDO7       10
  42 #define TPS65912_REG_LDO8       11
  43 #define TPS65912_REG_LDO9       12
  44 #define TPS65912_REG_LDO10      13
  45
  46 /* Number of step-down converters available */
  47 #define TPS65912_NUM_DCDC       4
  48
  49 /* Number of LDO voltage regulators  available */
  50 #define TPS65912_NUM_LDO        10
  51
  52 /* Number of total regulators available */
  53 #define TPS65912_NUM_REGULATOR          (TPS65912_NUM_DCDC + TPS65912_NUM_LDO)
  54
  55 #define TPS65912_REG_ENABLED    0x80
  56 #define OP_SELREG_MASK          0x40
  57 #define OP_SELREG_SHIFT         6
  58
  59 struct tps_info {
  60         const char *name;
  61 };
  62
  63 static struct tps_info tps65912_regs[] = {
  64         {
  65                 .name = "DCDC1",
  66         },
  67         {
  68                 .name = "DCDC2",
  69         },
  70         {
  71                 .name = "DCDC3",
  72         },
  73         {
  74                 .name = "DCDC4",
  75         },
  76         {
  77                 .name = "LDO1",
  78         },
  79         {
  80                 .name = "LDO2",
  81         },
  82         {
  83                 .name = "LDO3",
  84         },
  85         {
  86                 .name = "LDO4",
  87         },
  88         {
  89                 .name = "LDO5",
  90         },
  91         {
  92                 .name = "LDO6",
  93         },
  94         {
  95                 .name = "LDO7",
  96         },
  97         {
  98                 .name = "LDO8",
  99         },
 100         {
 101                 .name = "LDO9",
 102         },
 103         {
 104                 .name = "LDO10",
 105         },
 106 };
 107
 108 struct tps65912_reg {
 109         struct regulator_desc desc[TPS65912_NUM_REGULATOR];
 110         struct tps65912 *mfd;
 111         struct regulator_dev *rdev[TPS65912_NUM_REGULATOR];
 112         struct tps_info *info[TPS65912_NUM_REGULATOR];
 113         /* for read/write access */
 114         struct mutex io_lock;
 115         int mode;
 116         int (*get_ctrl_reg)(int);
 117         int dcdc1_range;
 118         int dcdc2_range;
 119         int dcdc3_range;
 120         int dcdc4_range;
 121         int pwm_mode_reg;
 122         int eco_reg;
 123 };
 124
 125 static int tps65912_get_range(struct tps65912_reg *pmic, int id)
 126 {
 127         struct tps65912 *mfd = pmic->mfd;
 128
 129         if (id > TPS65912_REG_DCDC4)
 130                 return 0;
 131
 132         switch (id) {
 133         case TPS65912_REG_DCDC1:
 134                 pmic->dcdc1_range = tps65912_reg_read(mfd,
 135                                                         TPS65912_DCDC1_LIMIT);
 136                 if (pmic->dcdc1_range < 0)
 137                         return pmic->dcdc1_range;
 138                 pmic->dcdc1_range = (pmic->dcdc1_range &
 139                         DCDC_LIMIT_RANGE_MASK) >> DCDC_LIMIT_RANGE_SHIFT;
 140                 return pmic->dcdc1_range;
 141         case TPS65912_REG_DCDC2:
 142                 pmic->dcdc2_range = tps65912_reg_read(mfd,
 143                                                         TPS65912_DCDC2_LIMIT);
 144                 if (pmic->dcdc2_range < 0)
 145                         return pmic->dcdc2_range;
 146                 pmic->dcdc2_range = (pmic->dcdc2_range &
 147                         DCDC_LIMIT_RANGE_MASK) >> DCDC_LIMIT_RANGE_SHIFT;
 148                 return pmic->dcdc2_range;
 149         case TPS65912_REG_DCDC3:
 150                 pmic->dcdc3_range = tps65912_reg_read(mfd,
 151                                                         TPS65912_DCDC3_LIMIT);
 152                 if (pmic->dcdc3_range < 0)
 153                         return pmic->dcdc3_range;
 154                 pmic->dcdc3_range = (pmic->dcdc3_range &
 155                         DCDC_LIMIT_RANGE_MASK) >> DCDC_LIMIT_RANGE_SHIFT;
 156                 return pmic->dcdc3_range;
 157         case TPS65912_REG_DCDC4:
 158                 pmic->dcdc4_range = tps65912_reg_read(mfd,
 159                                                         TPS65912_DCDC4_LIMIT);
 160                 if (pmic->dcdc4_range < 0)
 161                         return pmic->dcdc4_range;
 162                 pmic->dcdc4_range = (pmic->dcdc4_range &
 163                         DCDC_LIMIT_RANGE_MASK) >> DCDC_LIMIT_RANGE_SHIFT;
 164                 return pmic->dcdc4_range;
 165         default:
 166                 return 0;
 167         }
 168 }
 169
 170 static unsigned long tps65912_vsel_to_uv_range0(u8 vsel)
 171 {
 172         unsigned long uv;
 173
 174         uv = ((vsel * 12500) + 500000);
 175         return uv;
 176 }
 177
 178 static unsigned long tps65912_vsel_to_uv_range1(u8 vsel)
 179 {
 180         unsigned long uv;
 181
 182          uv = ((vsel * 12500) + 700000);
 183         return uv;
 184 }
 185
 186 static unsigned long tps65912_vsel_to_uv_range2(u8 vsel)
 187 {
 188         unsigned long uv;
 189
 190         uv = ((vsel * 25000) + 500000);
 191         return uv;
 192 }
 193
 194 static unsigned long tps65912_vsel_to_uv_range3(u8 vsel)
 195 {
 196         unsigned long uv;
 197
 198         if (vsel == 0x3f)
 199                 uv = 3800000;
 200         else
 201                 uv = ((vsel * 50000) + 500000);
 202
 203         return uv;
 204 }
 205
 206 static unsigned long tps65912_vsel_to_uv_ldo(u8 vsel)
 207 {
 208         unsigned long uv = 0;
 209
 210         if (vsel <= 32)
 211                 uv = ((vsel * 25000) + 800000);
 212         else if (vsel > 32 && vsel <= 60)
 213                 uv = (((vsel - 32) * 50000) + 1600000);
 214         else if (vsel > 60)
 215                 uv = (((vsel - 60) * 100000) + 3000000);
 216
 217         return uv;
 218 }
 219
 220 static int tps65912_get_ctrl_register(int id)
 221 {
 222         switch (id) {
 223         case TPS65912_REG_DCDC1:
 224                 return TPS65912_DCDC1_AVS;
 225         case TPS65912_REG_DCDC2:
 226                 return TPS65912_DCDC2_AVS;
 227         case TPS65912_REG_DCDC3:
 228                 return TPS65912_DCDC3_AVS;
 229         case TPS65912_REG_DCDC4:
 230                 return TPS65912_DCDC4_AVS;
 231         case TPS65912_REG_LDO1:
 232                 return TPS65912_LDO1_AVS;
 233         case TPS65912_REG_LDO2:
 234                 return TPS65912_LDO2_AVS;
 235         case TPS65912_REG_LDO3:
 236                 return TPS65912_LDO3_AVS;
 237         case TPS65912_REG_LDO4:
 238                 return TPS65912_LDO4_AVS;
 239         case TPS65912_REG_LDO5:
 240                 return TPS65912_LDO5;
 241         case TPS65912_REG_LDO6:
 242                 return TPS65912_LDO6;
 243         case TPS65912_REG_LDO7:
 244                 return TPS65912_LDO7;
 245         case TPS65912_REG_LDO8:
 246                 return TPS65912_LDO8;
 247         case TPS65912_REG_LDO9:
 248                 return TPS65912_LDO9;
 249         case TPS65912_REG_LDO10:
 250                 return TPS65912_LDO10;
 251         default:
 252                 return -EINVAL;
 253         }
 254 }
 255
 256 static int tps65912_get_dcdc_sel_register(struct tps65912_reg *pmic, int id)
 257 {
 258         struct tps65912 *mfd = pmic->mfd;
 259         int opvsel = 0, sr = 0;
 260         u8 reg = 0;
 261
 262         if (id < TPS65912_REG_DCDC1 || id > TPS65912_REG_DCDC4)
 263                 return -EINVAL;
 264
 265         switch (id) {
 266         case TPS65912_REG_DCDC1:
 267                 opvsel = tps65912_reg_read(mfd, TPS65912_DCDC1_OP);
 268                 sr = ((opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT);
 269                 if (sr)
 270                         reg = TPS65912_DCDC1_AVS;
 271                 else
 272                         reg = TPS65912_DCDC1_OP;
 273                 break;
 274         case TPS65912_REG_DCDC2:
 275                 opvsel = tps65912_reg_read(mfd, TPS65912_DCDC2_OP);
 276                 sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT;
 277                 if (sr)
 278                         reg = TPS65912_DCDC2_AVS;
 279                 else
 280                         reg = TPS65912_DCDC2_OP;
 281                 break;
 282         case TPS65912_REG_DCDC3:
 283                 opvsel = tps65912_reg_read(mfd, TPS65912_DCDC3_OP);
 284                 sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT;
 285                 if (sr)
 286                         reg = TPS65912_DCDC3_AVS;
 287                 else
 288                         reg = TPS65912_DCDC3_OP;
 289                 break;
 290         case TPS65912_REG_DCDC4:
 291                 opvsel = tps65912_reg_read(mfd, TPS65912_DCDC4_OP);
 292                 sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT;
 293                 if (sr)
 294                         reg = TPS65912_DCDC4_AVS;
 295                 else
 296                         reg = TPS65912_DCDC4_OP;
 297                 break;
 298         }
 299         return reg;
 300 }
 301
 302 static int tps65912_get_ldo_sel_register(struct tps65912_reg *pmic, int id)
 303 {
 304         struct tps65912 *mfd = pmic->mfd;
 305         int opvsel = 0, sr = 0;
 306         u8 reg = 0;
 307
 308         if (id < TPS65912_REG_LDO1 || id > TPS65912_REG_LDO10)
 309                 return -EINVAL;
 310
 311         switch (id) {
 312         case TPS65912_REG_LDO1:
 313                 opvsel = tps65912_reg_read(mfd, TPS65912_LDO1_OP);
 314                 sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT;
 315                 if (sr)
 316                         reg = TPS65912_LDO1_AVS;
 317                 else
 318                         reg = TPS65912_LDO1_OP;
 319                 break;
 320         case TPS65912_REG_LDO2:
 321                 opvsel = tps65912_reg_read(mfd, TPS65912_LDO2_OP);
 322                 sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT;
 323                 if (sr)
 324                         reg = TPS65912_LDO2_AVS;
 325                 else
 326                         reg = TPS65912_LDO2_OP;
 327                 break;
 328         case TPS65912_REG_LDO3:
 329                 opvsel = tps65912_reg_read(mfd, TPS65912_LDO3_OP);
 330                 sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT;
 331                 if (sr)
 332                         reg = TPS65912_LDO3_AVS;
 333                 else
 334                         reg = TPS65912_LDO3_OP;
 335                 break;
 336         case TPS65912_REG_LDO4:
 337                 opvsel = tps65912_reg_read(mfd, TPS65912_LDO4_OP);
 338                 sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT;
 339                 if (sr)
 340                         reg = TPS65912_LDO4_AVS;
 341                 else
 342                         reg = TPS65912_LDO4_OP;
 343                 break;
 344         case TPS65912_REG_LDO5:
 345                 reg = TPS65912_LDO5;
 346                 break;
 347         case TPS65912_REG_LDO6:
 348                 reg = TPS65912_LDO6;
 349                 break;
 350         case TPS65912_REG_LDO7:
 351                 reg = TPS65912_LDO7;
 352                 break;
 353         case TPS65912_REG_LDO8:
 354                 reg = TPS65912_LDO8;
 355                 break;
 356         case TPS65912_REG_LDO9:
 357                 reg = TPS65912_LDO9;
 358                 break;
 359         case TPS65912_REG_LDO10:
 360                 reg = TPS65912_LDO10;
 361                 break;
 362         }
 363
 364         return reg;
 365 }
 366
 367 static int tps65912_get_mode_regiters(struct tps65912_reg *pmic, int id)
 368 {
 369         switch (id) {
 370         case TPS65912_REG_DCDC1:
 371                 pmic->pwm_mode_reg = TPS65912_DCDC1_CTRL;
 372                 pmic->eco_reg = TPS65912_DCDC1_AVS;
 373                 break;
 374         case TPS65912_REG_DCDC2:
 375                 pmic->pwm_mode_reg = TPS65912_DCDC2_CTRL;
 376                 pmic->eco_reg = TPS65912_DCDC2_AVS;
 377                 break;
 378         case TPS65912_REG_DCDC3:
 379                 pmic->pwm_mode_reg = TPS65912_DCDC3_CTRL;
 380                 pmic->eco_reg = TPS65912_DCDC3_AVS;
 381                 break;
 382         case TPS65912_REG_DCDC4:
 383                 pmic->pwm_mode_reg = TPS65912_DCDC4_CTRL;
 384                 pmic->eco_reg = TPS65912_DCDC4_AVS;
 385                 break;
 386         default:
 387                 return -EINVAL;
 388         }
 389
 390         return 0;
 391 }
 392
 393 static int tps65912_reg_is_enabled(struct regulator_dev *dev)
 394 {
 395         struct tps65912_reg *pmic = rdev_get_drvdata(dev);
 396         struct tps65912 *mfd = pmic->mfd;
 397         int reg, value, id = rdev_get_id(dev);
 398
 399         if (id < TPS65912_REG_DCDC1 || id > TPS65912_REG_LDO10)
 400                 return -EINVAL;
 401
 402         reg = pmic->get_ctrl_reg(id);
 403         if (reg < 0)
 404                 return reg;
 405
 406         value = tps65912_reg_read(mfd, reg);
 407         if (value < 0)
 408                 return value;
 409
 410         return value & TPS65912_REG_ENABLED;
 411 }
 412
 413 static int tps65912_reg_enable(struct regulator_dev *dev)
 414 {
 415         struct tps65912_reg *pmic = rdev_get_drvdata(dev);
 416         struct tps65912 *mfd = pmic->mfd;
 417         int id = rdev_get_id(dev);
 418         int reg;
 419
 420         if (id < TPS65912_REG_DCDC1 || id > TPS65912_REG_LDO10)
 421                 return -EINVAL;
 422
 423         reg = pmic->get_ctrl_reg(id);
 424         if (reg < 0)
 425                 return reg;
 426
 427         return tps65912_set_bits(mfd, reg, TPS65912_REG_ENABLED);
 428 }
 429
 430 static int tps65912_reg_disable(struct regulator_dev *dev)
 431 {
 432         struct tps65912_reg *pmic = rdev_get_drvdata(dev);
 433         struct tps65912 *mfd = pmic->mfd;
 434         int id = rdev_get_id(dev), reg;
 435
 436         reg = pmic->get_ctrl_reg(id);
 437         if (reg < 0)
 438                 return reg;
 439
 440         return tps65912_clear_bits(mfd, reg, TPS65912_REG_ENABLED);
 441 }
 442
 443 static int tps65912_set_mode(struct regulator_dev *dev, unsigned int mode)
 444 {
 445         struct tps65912_reg *pmic = rdev_get_drvdata(dev);
 446         struct tps65912 *mfd = pmic->mfd;
 447         int pwm_mode, eco, id = rdev_get_id(dev);
 448
 449         tps65912_get_mode_regiters(pmic, id);
 450
 451         pwm_mode = tps65912_reg_read(mfd, pmic->pwm_mode_reg);
 452         eco = tps65912_reg_read(mfd, pmic->eco_reg);
 453
 454         pwm_mode &= DCDCCTRL_DCDC_MODE_MASK;
 455         eco &= DCDC_AVS_ECO_MASK;
 456
 457         switch (mode) {
 458         case REGULATOR_MODE_FAST:
 459                 /* Verify if mode alredy set */
 460                 if (pwm_mode && !eco)
 461                         break;
 462                 tps65912_set_bits(mfd, pmic->pwm_mode_reg, DCDCCTRL_DCDC_MODE_MASK);
 463                 tps65912_clear_bits(mfd, pmic->eco_reg, DCDC_AVS_ECO_MASK);
 464                 break;
 465         case REGULATOR_MODE_NORMAL:
 466         case REGULATOR_MODE_IDLE:
 467                 if (!pwm_mode && !eco)
 468                         break;
 469                 tps65912_clear_bits(mfd, pmic->pwm_mode_reg, DCDCCTRL_DCDC_MODE_MASK);
 470                 tps65912_clear_bits(mfd, pmic->eco_reg, DCDC_AVS_ECO_MASK);
 471                 break;
 472         case REGULATOR_MODE_STANDBY:
 473                 if (!pwm_mode && eco)
 474                         break;
 475                 tps65912_clear_bits(mfd, pmic->pwm_mode_reg, DCDCCTRL_DCDC_MODE_MASK);
 476                 tps65912_set_bits(mfd, pmic->eco_reg, DCDC_AVS_ECO_MASK);
 477                 break;
 478         default:
 479                 return -EINVAL;
 480         }
 481
 482         return 0;
 483 }
 484
 485 static unsigned int tps65912_get_mode(struct regulator_dev *dev)
 486 {
 487         struct tps65912_reg *pmic = rdev_get_drvdata(dev);
 488         struct tps65912 *mfd = pmic->mfd;
 489         int pwm_mode, eco, mode = 0, id = rdev_get_id(dev);
 490
 491         tps65912_get_mode_regiters(pmic, id);
 492
 493         pwm_mode = tps65912_reg_read(mfd, pmic->pwm_mode_reg);
 494         eco = tps65912_reg_read(mfd, pmic->eco_reg);
 495
 496         pwm_mode &= DCDCCTRL_DCDC_MODE_MASK;
 497         eco &= DCDC_AVS_ECO_MASK;
 498
 499         if (pwm_mode && !eco)
 500                 mode = REGULATOR_MODE_FAST;
 501         else if (!pwm_mode && !eco)
 502                 mode = REGULATOR_MODE_NORMAL;
 503         else if (!pwm_mode && eco)
 504                 mode = REGULATOR_MODE_STANDBY;
 505
 506         return mode;
 507 }
 508
 509 static int tps65912_get_voltage_dcdc(struct regulator_dev *dev)
 510 {
 511         struct tps65912_reg *pmic = rdev_get_drvdata(dev);
 512         struct tps65912 *mfd = pmic->mfd;
 513         int id = rdev_get_id(dev), voltage = 0, range;
 514         int opvsel = 0, avsel = 0, sr, vsel;
 515
 516         switch (id) {
 517         case TPS65912_REG_DCDC1:
 518                 opvsel = tps65912_reg_read(mfd, TPS65912_DCDC1_OP);
 519                 avsel = tps65912_reg_read(mfd, TPS65912_DCDC1_AVS);
 520                 range = pmic->dcdc1_range;
 521                 break;
 522         case TPS65912_REG_DCDC2:
 523                 opvsel = tps65912_reg_read(mfd, TPS65912_DCDC2_OP);
 524                 avsel = tps65912_reg_read(mfd, TPS65912_DCDC2_AVS);
 525                 range = pmic->dcdc2_range;
 526                 break;
 527         case TPS65912_REG_DCDC3:
 528                 opvsel = tps65912_reg_read(mfd, TPS65912_DCDC3_OP);
 529                 avsel = tps65912_reg_read(mfd, TPS65912_DCDC3_AVS);
 530                 range = pmic->dcdc3_range;
 531                 break;
 532         case TPS65912_REG_DCDC4:
 533                 opvsel = tps65912_reg_read(mfd, TPS65912_DCDC4_OP);
 534                 avsel = tps65912_reg_read(mfd, TPS65912_DCDC4_AVS);
 535                 range = pmic->dcdc4_range;
 536                 break;
 537         default:
 538                 return -EINVAL;
 539         }
 540
 541         sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT;
 542         if (sr)
 543                 vsel = avsel;
 544         else
 545                 vsel = opvsel;
 546         vsel &= 0x3F;
 547
 548         switch (range) {
 549         case 0:
 550                 /* 0.5 - 1.2875V in 12.5mV steps */
 551                 voltage = tps65912_vsel_to_uv_range0(vsel);
 552                 break;
 553         case 1:
 554                 /* 0.7 - 1.4875V in 12.5mV steps */
 555                 voltage = tps65912_vsel_to_uv_range1(vsel);
 556                 break;
 557         case 2:
 558                 /* 0.5 - 2.075V in 25mV steps */
 559                 voltage = tps65912_vsel_to_uv_range2(vsel);
 560                 break;
 561         case 3:
 562                 /* 0.5 - 3.8V in 50mV steps */
 563                 voltage = tps65912_vsel_to_uv_range3(vsel);
 564                 break;
 565         }
 566         return voltage;
 567 }
 568
 569 static int tps65912_set_voltage_dcdc(struct regulator_dev *dev,
 570                                                 unsigned selector)
 571 {
 572         struct tps65912_reg *pmic = rdev_get_drvdata(dev);
 573         struct tps65912 *mfd = pmic->mfd;
 574         int id = rdev_get_id(dev);
 575         int value;
 576         u8 reg;
 577
 578         reg = tps65912_get_dcdc_sel_register(pmic, id);
 579         value = tps65912_reg_read(mfd, reg);
 580         value &= 0xC0;
 581         return tps65912_reg_write(mfd, reg, selector | value);
 582 }
 583
 584 static int tps65912_get_voltage_ldo(struct regulator_dev *dev)
 585 {
 586         struct tps65912_reg *pmic = rdev_get_drvdata(dev);
 587         struct tps65912 *mfd = pmic->mfd;
 588         int id = rdev_get_id(dev);
 589         int vsel = 0;
 590         u8 reg;
 591
 592         reg = tps65912_get_ldo_sel_register(pmic, id);
 593         vsel = tps65912_reg_read(mfd, reg);
 594         vsel &= 0x3F;
 595
 596         return tps65912_vsel_to_uv_ldo(vsel);
 597 }
 598
 599 static int tps65912_set_voltage_ldo(struct regulator_dev *dev,
 600                                                 unsigned selector)
 601 {
 602         struct tps65912_reg *pmic = rdev_get_drvdata(dev);
 603         struct tps65912 *mfd = pmic->mfd;
 604         int id = rdev_get_id(dev), reg, value;
 605
 606         reg = tps65912_get_ldo_sel_register(pmic, id);
 607         value = tps65912_reg_read(mfd, reg);
 608         value &= 0xC0;
 609         return tps65912_reg_write(mfd, reg, selector | value);
 610 }
 611
 612 static int tps65912_list_voltage_dcdc(struct regulator_dev *dev,
 613                                         unsigned selector)
 614 {
 615         struct tps65912_reg *pmic = rdev_get_drvdata(dev);
 616         int range, voltage = 0, id = rdev_get_id(dev);
 617
 618         switch (id) {
 619         case TPS65912_REG_DCDC1:
 620                 range = pmic->dcdc1_range;
 621                 break;
 622         case TPS65912_REG_DCDC2:
 623                 range = pmic->dcdc2_range;
 624                 break;
 625         case TPS65912_REG_DCDC3:
 626                 range = pmic->dcdc3_range;
 627                 break;
 628         case TPS65912_REG_DCDC4:
 629                 range = pmic->dcdc4_range;
 630                 break;
 631         default:
 632                 return -EINVAL;
 633         }
 634
 635         switch (range) {
 636         case 0:
 637                 /* 0.5 - 1.2875V in 12.5mV steps */
 638                 voltage = tps65912_vsel_to_uv_range0(selector);
 639                 break;
 640         case 1:
 641                 /* 0.7 - 1.4875V in 12.5mV steps */
 642                 voltage = tps65912_vsel_to_uv_range1(selector);
 643                 break;
 644         case 2:
 645                 /* 0.5 - 2.075V in 25mV steps */
 646                 voltage = tps65912_vsel_to_uv_range2(selector);
 647                 break;
 648         case 3:
 649                 /* 0.5 - 3.8V in 50mV steps */
 650                 voltage = tps65912_vsel_to_uv_range3(selector);
 651                 break;
 652         }
 653         return voltage;
 654 }
 655
 656 static int tps65912_list_voltage_ldo(struct regulator_dev *dev,
 657                                         unsigned selector)
 658 {
 659         int ldo = rdev_get_id(dev);
 660
 661         if (ldo < TPS65912_REG_LDO1 || ldo > TPS65912_REG_LDO10)
 662                 return -EINVAL;
 663
 664         return tps65912_vsel_to_uv_ldo(selector);
 665 }
 666
 667 /* Operations permitted on DCDCx */
 668 static struct regulator_ops tps65912_ops_dcdc = {
 669         .is_enabled = tps65912_reg_is_enabled,
 670         .enable = tps65912_reg_enable,
 671         .disable = tps65912_reg_disable,
 672         .set_mode = tps65912_set_mode,
 673         .get_mode = tps65912_get_mode,
 674         .get_voltage = tps65912_get_voltage_dcdc,
 675         .set_voltage_sel = tps65912_set_voltage_dcdc,
 676         .list_voltage = tps65912_list_voltage_dcdc,
 677 };
 678
 679 /* Operations permitted on LDOx */
 680 static struct regulator_ops tps65912_ops_ldo = {
 681         .is_enabled = tps65912_reg_is_enabled,
 682         .enable = tps65912_reg_enable,
 683         .disable = tps65912_reg_disable,
 684         .get_voltage = tps65912_get_voltage_ldo,
 685         .set_voltage_sel = tps65912_set_voltage_ldo,
 686         .list_voltage = tps65912_list_voltage_ldo,
 687 };
 688
 689 static __devinit int tps65912_probe(struct platform_device *pdev)
 690 {
 691         struct tps65912 *tps65912 = dev_get_drvdata(pdev->dev.parent);
 692         struct tps_info *info;
 693         struct regulator_init_data *reg_data;
 694         struct regulator_dev *rdev;
 695         struct tps65912_reg *pmic;
 696         struct tps65912_board *pmic_plat_data;
 697         int i, err;
 698
 699         pmic_plat_data = dev_get_platdata(tps65912->dev);
 700         if (!pmic_plat_data)
 701                 return -EINVAL;
 702
 703         reg_data = pmic_plat_data->tps65912_pmic_init_data;
 704
 705         pmic = kzalloc(sizeof(*pmic), GFP_KERNEL);
 706         if (!pmic)
 707                 return -ENOMEM;
 708
 709         mutex_init(&pmic->io_lock);
 710         pmic->mfd = tps65912;
 711         platform_set_drvdata(pdev, pmic);
 712
 713         pmic->get_ctrl_reg = &tps65912_get_ctrl_register;
 714         info = tps65912_regs;
 715
 716         for (i = 0; i < TPS65912_NUM_REGULATOR; i++, info++, reg_data++) {
 717                 int range = 0;
 718                 /* Register the regulators */
 719                 pmic->info[i] = info;
 720
 721                 pmic->desc[i].name = info->name;
 722                 pmic->desc[i].id = i;
 723                 pmic->desc[i].n_voltages = 64;
 724                 pmic->desc[i].ops = (i > TPS65912_REG_DCDC4 ?
 725                         &tps65912_ops_ldo : &tps65912_ops_dcdc);
 726                 pmic->desc[i].type = REGULATOR_VOLTAGE;
 727                 pmic->desc[i].owner = THIS_MODULE;
 728                 range = tps65912_get_range(pmic, i);
 729                 rdev = regulator_register(&pmic->desc[i],
 730                                         tps65912->dev, reg_data, pmic);
 731                 if (IS_ERR(rdev)) {
 732                         dev_err(tps65912->dev,
 733                                 "failed to register %s regulator\n",
 734                                 pdev->name);
 735                         err = PTR_ERR(rdev);
 736                         goto err;
 737                 }
 738
 739                 /* Save regulator for cleanup */
 740                 pmic->rdev[i] = rdev;
 741         }
 742         return 0;
 743
 744 err:
 745         while (--i >= 0)
 746                 regulator_unregister(pmic->rdev[i]);
 747
 748         kfree(pmic);
 749         return err;
 750 }
 751
 752 static int __devexit tps65912_remove(struct platform_device *pdev)
 753 {
 754         struct tps65912_reg *tps65912_reg = platform_get_drvdata(pdev);
 755         int i;
 756
 757         for (i = 0; i < TPS65912_NUM_REGULATOR; i++)
 758                 regulator_unregister(tps65912_reg->rdev[i]);
 759
 760         kfree(tps65912_reg);
 761         return 0;
 762 }
 763
 764 static struct platform_driver tps65912_driver = {
 765         .driver = {
 766                 .name = "tps65912-pmic",
 767                 .owner = THIS_MODULE,
 768         },
 769         .probe = tps65912_probe,
 770         .remove = __devexit_p(tps65912_remove),
 771 };
 772
 773 /**
 774  * tps65912_init
 775  *
 776  * Module init function
 777  */
 778 static int __init tps65912_init(void)
 779 {
 780         return platform_driver_register(&tps65912_driver);
 781 }
 782 subsys_initcall(tps65912_init);
 783
 784 /**
 785  * tps65912_cleanup
 786  *
 787  * Module exit function
 788  */
 789 static void __exit tps65912_cleanup(void)
 790 {
 791         platform_driver_unregister(&tps65912_driver);
 792 }
 793 module_exit(tps65912_cleanup);
 794
 795 MODULE_AUTHOR("Margarita Olaya Cabrera <magi@slimlogic.co.uk>");
 796 MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
 797 MODULE_LICENSE("GPL v2");
 798 MODULE_ALIAS("platform:tps65912-pmic");