drivers/regulator/tps65910-regulator.c

   1 /*
   2  * tps65910.c  --  TI tps65910
   3  *
   4  * Copyright 2010 Texas Instruments Inc.
   5  *
   6  * Author: Graeme Gregory <gg@slimlogic.co.uk>
   7  * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify it
  10  *  under  the terms of the GNU General  Public License as published by the
  11  *  Free Software Foundation;  either version 2 of the License, or (at your
  12  *  option) any later version.
  13  *
  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/slab.h>
  24 #include <linux/gpio.h>
  25 #include <linux/mfd/tps65910.h>
  26 #include <linux/regulator/of_regulator.h>
  27
  28 #define TPS65910_SUPPLY_STATE_ENABLED   0x1
  29 #define EXT_SLEEP_CONTROL (TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 |       \
  30                         TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2 |          \
  31                         TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3 |          \
  32                         TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
  33
  34 /* supported VIO voltages in microvolts */
  35 static const unsigned int VIO_VSEL_table[] = {
  36         1500000, 1800000, 2500000, 3300000,
  37 };
  38
  39 /* VSEL tables for TPS65910 specific LDOs and dcdc's */
  40
  41 /* supported VDD3 voltages in microvolts */
  42 static const unsigned int VDD3_VSEL_table[] = {
  43         5000000,
  44 };
  45
  46 /* supported VDIG1 voltages in microvolts */
  47 static const unsigned int VDIG1_VSEL_table[] = {
  48         1200000, 1500000, 1800000, 2700000,
  49 };
  50
  51 /* supported VDIG2 voltages in microvolts */
  52 static const unsigned int VDIG2_VSEL_table[] = {
  53         1000000, 1100000, 1200000, 1800000,
  54 };
  55
  56 /* supported VPLL voltages in microvolts */
  57 static const unsigned int VPLL_VSEL_table[] = {
  58         1000000, 1100000, 1800000, 2500000,
  59 };
  60
  61 /* supported VDAC voltages in microvolts */
  62 static const unsigned int VDAC_VSEL_table[] = {
  63         1800000, 2600000, 2800000, 2850000,
  64 };
  65
  66 /* supported VAUX1 voltages in microvolts */
  67 static const unsigned int VAUX1_VSEL_table[] = {
  68         1800000, 2500000, 2800000, 2850000,
  69 };
  70
  71 /* supported VAUX2 voltages in microvolts */
  72 static const unsigned int VAUX2_VSEL_table[] = {
  73         1800000, 2800000, 2900000, 3300000,
  74 };
  75
  76 /* supported VAUX33 voltages in microvolts */
  77 static const unsigned int VAUX33_VSEL_table[] = {
  78         1800000, 2000000, 2800000, 3300000,
  79 };
  80
  81 /* supported VMMC voltages in microvolts */
  82 static const unsigned int VMMC_VSEL_table[] = {
  83         1800000, 2800000, 3000000, 3300000,
  84 };
  85
  86 struct tps_info {
  87         const char *name;
  88         const char *vin_name;
  89         u8 n_voltages;
  90         const unsigned int *voltage_table;
  91         int enable_time_us;
  92 };
  93
  94 static struct tps_info tps65910_regs[] = {
  95         {
  96                 .name = "vrtc",
  97                 .vin_name = "vcc7",
  98                 .enable_time_us = 2200,
  99         },
 100         {
 101                 .name = "vio",
 102                 .vin_name = "vccio",
 103                 .n_voltages = ARRAY_SIZE(VIO_VSEL_table),
 104                 .voltage_table = VIO_VSEL_table,
 105                 .enable_time_us = 350,
 106         },
 107         {
 108                 .name = "vdd1",
 109                 .vin_name = "vcc1",
 110                 .enable_time_us = 350,
 111         },
 112         {
 113                 .name = "vdd2",
 114                 .vin_name = "vcc2",
 115                 .enable_time_us = 350,
 116         },
 117         {
 118                 .name = "vdd3",
 119                 .n_voltages = ARRAY_SIZE(VDD3_VSEL_table),
 120                 .voltage_table = VDD3_VSEL_table,
 121                 .enable_time_us = 200,
 122         },
 123         {
 124                 .name = "vdig1",
 125                 .vin_name = "vcc6",
 126                 .n_voltages = ARRAY_SIZE(VDIG1_VSEL_table),
 127                 .voltage_table = VDIG1_VSEL_table,
 128                 .enable_time_us = 100,
 129         },
 130         {
 131                 .name = "vdig2",
 132                 .vin_name = "vcc6",
 133                 .n_voltages = ARRAY_SIZE(VDIG2_VSEL_table),
 134                 .voltage_table = VDIG2_VSEL_table,
 135                 .enable_time_us = 100,
 136         },
 137         {
 138                 .name = "vpll",
 139                 .vin_name = "vcc5",
 140                 .n_voltages = ARRAY_SIZE(VPLL_VSEL_table),
 141                 .voltage_table = VPLL_VSEL_table,
 142                 .enable_time_us = 100,
 143         },
 144         {
 145                 .name = "vdac",
 146                 .vin_name = "vcc5",
 147                 .n_voltages = ARRAY_SIZE(VDAC_VSEL_table),
 148                 .voltage_table = VDAC_VSEL_table,
 149                 .enable_time_us = 100,
 150         },
 151         {
 152                 .name = "vaux1",
 153                 .vin_name = "vcc4",
 154                 .n_voltages = ARRAY_SIZE(VAUX1_VSEL_table),
 155                 .voltage_table = VAUX1_VSEL_table,
 156                 .enable_time_us = 100,
 157         },
 158         {
 159                 .name = "vaux2",
 160                 .vin_name = "vcc4",
 161                 .n_voltages = ARRAY_SIZE(VAUX2_VSEL_table),
 162                 .voltage_table = VAUX2_VSEL_table,
 163                 .enable_time_us = 100,
 164         },
 165         {
 166                 .name = "vaux33",
 167                 .vin_name = "vcc3",
 168                 .n_voltages = ARRAY_SIZE(VAUX33_VSEL_table),
 169                 .voltage_table = VAUX33_VSEL_table,
 170                 .enable_time_us = 100,
 171         },
 172         {
 173                 .name = "vmmc",
 174                 .vin_name = "vcc3",
 175                 .n_voltages = ARRAY_SIZE(VMMC_VSEL_table),
 176                 .voltage_table = VMMC_VSEL_table,
 177                 .enable_time_us = 100,
 178         },
 179 };
 180
 181 static struct tps_info tps65911_regs[] = {
 182         {
 183                 .name = "vrtc",
 184                 .vin_name = "vcc7",
 185                 .enable_time_us = 2200,
 186         },
 187         {
 188                 .name = "vio",
 189                 .vin_name = "vccio",
 190                 .n_voltages = ARRAY_SIZE(VIO_VSEL_table),
 191                 .voltage_table = VIO_VSEL_table,
 192                 .enable_time_us = 350,
 193         },
 194         {
 195                 .name = "vdd1",
 196                 .vin_name = "vcc1",
 197                 .n_voltages = 0x4C,
 198                 .enable_time_us = 350,
 199         },
 200         {
 201                 .name = "vdd2",
 202                 .vin_name = "vcc2",
 203                 .n_voltages = 0x4C,
 204                 .enable_time_us = 350,
 205         },
 206         {
 207                 .name = "vddctrl",
 208                 .n_voltages = 0x44,
 209                 .enable_time_us = 900,
 210         },
 211         {
 212                 .name = "ldo1",
 213                 .vin_name = "vcc6",
 214                 .n_voltages = 0x33,
 215                 .enable_time_us = 420,
 216         },
 217         {
 218                 .name = "ldo2",
 219                 .vin_name = "vcc6",
 220                 .n_voltages = 0x33,
 221                 .enable_time_us = 420,
 222         },
 223         {
 224                 .name = "ldo3",
 225                 .vin_name = "vcc5",
 226                 .n_voltages = 0x1A,
 227                 .enable_time_us = 230,
 228         },
 229         {
 230                 .name = "ldo4",
 231                 .vin_name = "vcc5",
 232                 .n_voltages = 0x33,
 233                 .enable_time_us = 230,
 234         },
 235         {
 236                 .name = "ldo5",
 237                 .vin_name = "vcc4",
 238                 .n_voltages = 0x1A,
 239                 .enable_time_us = 230,
 240         },
 241         {
 242                 .name = "ldo6",
 243                 .vin_name = "vcc3",
 244                 .n_voltages = 0x1A,
 245                 .enable_time_us = 230,
 246         },
 247         {
 248                 .name = "ldo7",
 249                 .vin_name = "vcc3",
 250                 .n_voltages = 0x1A,
 251                 .enable_time_us = 230,
 252         },
 253         {
 254                 .name = "ldo8",
 255                 .vin_name = "vcc3",
 256                 .n_voltages = 0x1A,
 257                 .enable_time_us = 230,
 258         },
 259 };
 260
 261 #define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits))
 262 static unsigned int tps65910_ext_sleep_control[] = {
 263         0,
 264         EXT_CONTROL_REG_BITS(VIO,    1, 0),
 265         EXT_CONTROL_REG_BITS(VDD1,   1, 1),
 266         EXT_CONTROL_REG_BITS(VDD2,   1, 2),
 267         EXT_CONTROL_REG_BITS(VDD3,   1, 3),
 268         EXT_CONTROL_REG_BITS(VDIG1,  0, 1),
 269         EXT_CONTROL_REG_BITS(VDIG2,  0, 2),
 270         EXT_CONTROL_REG_BITS(VPLL,   0, 6),
 271         EXT_CONTROL_REG_BITS(VDAC,   0, 7),
 272         EXT_CONTROL_REG_BITS(VAUX1,  0, 3),
 273         EXT_CONTROL_REG_BITS(VAUX2,  0, 4),
 274         EXT_CONTROL_REG_BITS(VAUX33, 0, 5),
 275         EXT_CONTROL_REG_BITS(VMMC,   0, 0),
 276 };
 277
 278 static unsigned int tps65911_ext_sleep_control[] = {
 279         0,
 280         EXT_CONTROL_REG_BITS(VIO,     1, 0),
 281         EXT_CONTROL_REG_BITS(VDD1,    1, 1),
 282         EXT_CONTROL_REG_BITS(VDD2,    1, 2),
 283         EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3),
 284         EXT_CONTROL_REG_BITS(LDO1,    0, 1),
 285         EXT_CONTROL_REG_BITS(LDO2,    0, 2),
 286         EXT_CONTROL_REG_BITS(LDO3,    0, 7),
 287         EXT_CONTROL_REG_BITS(LDO4,    0, 6),
 288         EXT_CONTROL_REG_BITS(LDO5,    0, 3),
 289         EXT_CONTROL_REG_BITS(LDO6,    0, 0),
 290         EXT_CONTROL_REG_BITS(LDO7,    0, 5),
 291         EXT_CONTROL_REG_BITS(LDO8,    0, 4),
 292 };
 293
 294 struct tps65910_reg {
 295         struct regulator_desc *desc;
 296         struct tps65910 *mfd;
 297         struct regulator_dev **rdev;
 298         struct tps_info **info;
 299         int num_regulators;
 300         int mode;
 301         int  (*get_ctrl_reg)(int);
 302         unsigned int *ext_sleep_control;
 303         unsigned int board_ext_control[TPS65910_NUM_REGS];
 304 };
 305
 306 static int tps65910_get_ctrl_register(int id)
 307 {
 308         switch (id) {
 309         case TPS65910_REG_VRTC:
 310                 return TPS65910_VRTC;
 311         case TPS65910_REG_VIO:
 312                 return TPS65910_VIO;
 313         case TPS65910_REG_VDD1:
 314                 return TPS65910_VDD1;
 315         case TPS65910_REG_VDD2:
 316                 return TPS65910_VDD2;
 317         case TPS65910_REG_VDD3:
 318                 return TPS65910_VDD3;
 319         case TPS65910_REG_VDIG1:
 320                 return TPS65910_VDIG1;
 321         case TPS65910_REG_VDIG2:
 322                 return TPS65910_VDIG2;
 323         case TPS65910_REG_VPLL:
 324                 return TPS65910_VPLL;
 325         case TPS65910_REG_VDAC:
 326                 return TPS65910_VDAC;
 327         case TPS65910_REG_VAUX1:
 328                 return TPS65910_VAUX1;
 329         case TPS65910_REG_VAUX2:
 330                 return TPS65910_VAUX2;
 331         case TPS65910_REG_VAUX33:
 332                 return TPS65910_VAUX33;
 333         case TPS65910_REG_VMMC:
 334                 return TPS65910_VMMC;
 335         default:
 336                 return -EINVAL;
 337         }
 338 }
 339
 340 static int tps65911_get_ctrl_register(int id)
 341 {
 342         switch (id) {
 343         case TPS65910_REG_VRTC:
 344                 return TPS65910_VRTC;
 345         case TPS65910_REG_VIO:
 346                 return TPS65910_VIO;
 347         case TPS65910_REG_VDD1:
 348                 return TPS65910_VDD1;
 349         case TPS65910_REG_VDD2:
 350                 return TPS65910_VDD2;
 351         case TPS65911_REG_VDDCTRL:
 352                 return TPS65911_VDDCTRL;
 353         case TPS65911_REG_LDO1:
 354                 return TPS65911_LDO1;
 355         case TPS65911_REG_LDO2:
 356                 return TPS65911_LDO2;
 357         case TPS65911_REG_LDO3:
 358                 return TPS65911_LDO3;
 359         case TPS65911_REG_LDO4:
 360                 return TPS65911_LDO4;
 361         case TPS65911_REG_LDO5:
 362                 return TPS65911_LDO5;
 363         case TPS65911_REG_LDO6:
 364                 return TPS65911_LDO6;
 365         case TPS65911_REG_LDO7:
 366                 return TPS65911_LDO7;
 367         case TPS65911_REG_LDO8:
 368                 return TPS65911_LDO8;
 369         default:
 370                 return -EINVAL;
 371         }
 372 }
 373
 374 static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
 375 {
 376         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 377         struct tps65910 *mfd = pmic->mfd;
 378         int reg, value, id = rdev_get_id(dev);
 379
 380         reg = pmic->get_ctrl_reg(id);
 381         if (reg < 0)
 382                 return reg;
 383
 384         switch (mode) {
 385         case REGULATOR_MODE_NORMAL:
 386                 return tps65910_reg_update_bits(pmic->mfd, reg,
 387                                                 LDO_ST_MODE_BIT | LDO_ST_ON_BIT,
 388                                                 LDO_ST_ON_BIT);
 389         case REGULATOR_MODE_IDLE:
 390                 value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT;
 391                 return tps65910_reg_set_bits(mfd, reg, value);
 392         case REGULATOR_MODE_STANDBY:
 393                 return tps65910_reg_clear_bits(mfd, reg, LDO_ST_ON_BIT);
 394         }
 395
 396         return -EINVAL;
 397 }
 398
 399 static unsigned int tps65910_get_mode(struct regulator_dev *dev)
 400 {
 401         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 402         int ret, reg, value, id = rdev_get_id(dev);
 403
 404         reg = pmic->get_ctrl_reg(id);
 405         if (reg < 0)
 406                 return reg;
 407
 408         ret = tps65910_reg_read(pmic->mfd, reg, &value);
 409         if (ret < 0)
 410                 return ret;
 411
 412         if (!(value & LDO_ST_ON_BIT))
 413                 return REGULATOR_MODE_STANDBY;
 414         else if (value & LDO_ST_MODE_BIT)
 415                 return REGULATOR_MODE_IDLE;
 416         else
 417                 return REGULATOR_MODE_NORMAL;
 418 }
 419
 420 static int tps65910_get_voltage_dcdc_sel(struct regulator_dev *dev)
 421 {
 422         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 423         int ret, id = rdev_get_id(dev);
 424         int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0;
 425
 426         switch (id) {
 427         case TPS65910_REG_VDD1:
 428                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1_OP, &opvsel);
 429                 if (ret < 0)
 430                         return ret;
 431                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1, &mult);
 432                 if (ret < 0)
 433                         return ret;
 434                 mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT;
 435                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1_SR, &srvsel);
 436                 if (ret < 0)
 437                         return ret;
 438                 sr = opvsel & VDD1_OP_CMD_MASK;
 439                 opvsel &= VDD1_OP_SEL_MASK;
 440                 srvsel &= VDD1_SR_SEL_MASK;
 441                 vselmax = 75;
 442                 break;
 443         case TPS65910_REG_VDD2:
 444                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2_OP, &opvsel);
 445                 if (ret < 0)
 446                         return ret;
 447                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2, &mult);
 448                 if (ret < 0)
 449                         return ret;
 450                 mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT;
 451                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2_SR, &srvsel);
 452                 if (ret < 0)
 453                         return ret;
 454                 sr = opvsel & VDD2_OP_CMD_MASK;
 455                 opvsel &= VDD2_OP_SEL_MASK;
 456                 srvsel &= VDD2_SR_SEL_MASK;
 457                 vselmax = 75;
 458                 break;
 459         case TPS65911_REG_VDDCTRL:
 460                 ret = tps65910_reg_read(pmic->mfd, TPS65911_VDDCTRL_OP,
 461                                         &opvsel);
 462                 if (ret < 0)
 463                         return ret;
 464                 ret = tps65910_reg_read(pmic->mfd, TPS65911_VDDCTRL_SR,
 465                                         &srvsel);
 466                 if (ret < 0)
 467                         return ret;
 468                 sr = opvsel & VDDCTRL_OP_CMD_MASK;
 469                 opvsel &= VDDCTRL_OP_SEL_MASK;
 470                 srvsel &= VDDCTRL_SR_SEL_MASK;
 471                 vselmax = 64;
 472                 break;
 473         }
 474
 475         /* multiplier 0 == 1 but 2,3 normal */
 476         if (!mult)
 477                 mult=1;
 478
 479         if (sr) {
 480                 /* normalise to valid range */
 481                 if (srvsel < 3)
 482                         srvsel = 3;
 483                 if (srvsel > vselmax)
 484                         srvsel = vselmax;
 485                 return srvsel - 3;
 486         } else {
 487
 488                 /* normalise to valid range*/
 489                 if (opvsel < 3)
 490                         opvsel = 3;
 491                 if (opvsel > vselmax)
 492                         opvsel = vselmax;
 493                 return opvsel - 3;
 494         }
 495         return -EINVAL;
 496 }
 497
 498 static int tps65910_get_voltage_sel(struct regulator_dev *dev)
 499 {
 500         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 501         int ret, reg, value, id = rdev_get_id(dev);
 502
 503         reg = pmic->get_ctrl_reg(id);
 504         if (reg < 0)
 505                 return reg;
 506
 507         ret = tps65910_reg_read(pmic->mfd, reg, &value);
 508         if (ret < 0)
 509                 return ret;
 510
 511         switch (id) {
 512         case TPS65910_REG_VIO:
 513         case TPS65910_REG_VDIG1:
 514         case TPS65910_REG_VDIG2:
 515         case TPS65910_REG_VPLL:
 516         case TPS65910_REG_VDAC:
 517         case TPS65910_REG_VAUX1:
 518         case TPS65910_REG_VAUX2:
 519         case TPS65910_REG_VAUX33:
 520         case TPS65910_REG_VMMC:
 521                 value &= LDO_SEL_MASK;
 522                 value >>= LDO_SEL_SHIFT;
 523                 break;
 524         default:
 525                 return -EINVAL;
 526         }
 527
 528         return value;
 529 }
 530
 531 static int tps65910_get_voltage_vdd3(struct regulator_dev *dev)
 532 {
 533         return dev->desc->volt_table[0];
 534 }
 535
 536 static int tps65911_get_voltage_sel(struct regulator_dev *dev)
 537 {
 538         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 539         int ret, id = rdev_get_id(dev);
 540         unsigned int value, reg;
 541
 542         reg = pmic->get_ctrl_reg(id);
 543
 544         ret = tps65910_reg_read(pmic->mfd, reg, &value);
 545         if (ret < 0)
 546                 return ret;
 547
 548         switch (id) {
 549         case TPS65911_REG_LDO1:
 550         case TPS65911_REG_LDO2:
 551         case TPS65911_REG_LDO4:
 552                 value &= LDO1_SEL_MASK;
 553                 value >>= LDO_SEL_SHIFT;
 554                 break;
 555         case TPS65911_REG_LDO3:
 556         case TPS65911_REG_LDO5:
 557         case TPS65911_REG_LDO6:
 558         case TPS65911_REG_LDO7:
 559         case TPS65911_REG_LDO8:
 560                 value &= LDO3_SEL_MASK;
 561                 value >>= LDO_SEL_SHIFT;
 562                 break;
 563         case TPS65910_REG_VIO:
 564                 value &= LDO_SEL_MASK;
 565                 value >>= LDO_SEL_SHIFT;
 566                 break;
 567         default:
 568                 return -EINVAL;
 569         }
 570
 571         return value;
 572 }
 573
 574 static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev,
 575                                          unsigned selector)
 576 {
 577         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 578         int id = rdev_get_id(dev), vsel;
 579         int dcdc_mult = 0;
 580
 581         switch (id) {
 582         case TPS65910_REG_VDD1:
 583                 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
 584                 if (dcdc_mult == 1)
 585                         dcdc_mult--;
 586                 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
 587
 588                 tps65910_reg_update_bits(pmic->mfd, TPS65910_VDD1,
 589                                          VDD1_VGAIN_SEL_MASK,
 590                                          dcdc_mult << VDD1_VGAIN_SEL_SHIFT);
 591                 tps65910_reg_write(pmic->mfd, TPS65910_VDD1_OP, vsel);
 592                 break;
 593         case TPS65910_REG_VDD2:
 594                 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
 595                 if (dcdc_mult == 1)
 596                         dcdc_mult--;
 597                 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
 598
 599                 tps65910_reg_update_bits(pmic->mfd, TPS65910_VDD2,
 600                                          VDD1_VGAIN_SEL_MASK,
 601                                          dcdc_mult << VDD2_VGAIN_SEL_SHIFT);
 602                 tps65910_reg_write(pmic->mfd, TPS65910_VDD2_OP, vsel);
 603                 break;
 604         case TPS65911_REG_VDDCTRL:
 605                 vsel = selector + 3;
 606                 tps65910_reg_write(pmic->mfd, TPS65911_VDDCTRL_OP, vsel);
 607         }
 608
 609         return 0;
 610 }
 611
 612 static int tps65910_set_voltage_sel(struct regulator_dev *dev,
 613                                     unsigned selector)
 614 {
 615         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 616         int reg, id = rdev_get_id(dev);
 617
 618         reg = pmic->get_ctrl_reg(id);
 619         if (reg < 0)
 620                 return reg;
 621
 622         switch (id) {
 623         case TPS65910_REG_VIO:
 624         case TPS65910_REG_VDIG1:
 625         case TPS65910_REG_VDIG2:
 626         case TPS65910_REG_VPLL:
 627         case TPS65910_REG_VDAC:
 628         case TPS65910_REG_VAUX1:
 629         case TPS65910_REG_VAUX2:
 630         case TPS65910_REG_VAUX33:
 631         case TPS65910_REG_VMMC:
 632                 return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK,
 633                                                 selector << LDO_SEL_SHIFT);
 634         }
 635
 636         return -EINVAL;
 637 }
 638
 639 static int tps65911_set_voltage_sel(struct regulator_dev *dev,
 640                                     unsigned selector)
 641 {
 642         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 643         int reg, id = rdev_get_id(dev);
 644
 645         reg = pmic->get_ctrl_reg(id);
 646         if (reg < 0)
 647                 return reg;
 648
 649         switch (id) {
 650         case TPS65911_REG_LDO1:
 651         case TPS65911_REG_LDO2:
 652         case TPS65911_REG_LDO4:
 653                 return tps65910_reg_update_bits(pmic->mfd, reg, LDO1_SEL_MASK,
 654                                                 selector << LDO_SEL_SHIFT);
 655         case TPS65911_REG_LDO3:
 656         case TPS65911_REG_LDO5:
 657         case TPS65911_REG_LDO6:
 658         case TPS65911_REG_LDO7:
 659         case TPS65911_REG_LDO8:
 660                 return tps65910_reg_update_bits(pmic->mfd, reg, LDO3_SEL_MASK,
 661                                                 selector << LDO_SEL_SHIFT);
 662         case TPS65910_REG_VIO:
 663                 return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK,
 664                                                 selector << LDO_SEL_SHIFT);
 665         }
 666
 667         return -EINVAL;
 668 }
 669
 670
 671 static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
 672                                         unsigned selector)
 673 {
 674         int volt, mult = 1, id = rdev_get_id(dev);
 675
 676         switch (id) {
 677         case TPS65910_REG_VDD1:
 678         case TPS65910_REG_VDD2:
 679                 mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
 680                 volt = VDD1_2_MIN_VOLT +
 681                                 (selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET;
 682                 break;
 683         case TPS65911_REG_VDDCTRL:
 684                 volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET);
 685                 break;
 686         default:
 687                 BUG();
 688                 return -EINVAL;
 689         }
 690
 691         return  volt * 100 * mult;
 692 }
 693
 694 static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector)
 695 {
 696         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 697         int step_mv = 0, id = rdev_get_id(dev);
 698
 699         switch(id) {
 700         case TPS65911_REG_LDO1:
 701         case TPS65911_REG_LDO2:
 702         case TPS65911_REG_LDO4:
 703                 /* The first 5 values of the selector correspond to 1V */
 704                 if (selector < 5)
 705                         selector = 0;
 706                 else
 707                         selector -= 4;
 708
 709                 step_mv = 50;
 710                 break;
 711         case TPS65911_REG_LDO3:
 712         case TPS65911_REG_LDO5:
 713         case TPS65911_REG_LDO6:
 714         case TPS65911_REG_LDO7:
 715         case TPS65911_REG_LDO8:
 716                 /* The first 3 values of the selector correspond to 1V */
 717                 if (selector < 3)
 718                         selector = 0;
 719                 else
 720                         selector -= 2;
 721
 722                 step_mv = 100;
 723                 break;
 724         case TPS65910_REG_VIO:
 725                 return pmic->info[id]->voltage_table[selector];
 726         default:
 727                 return -EINVAL;
 728         }
 729
 730         return (LDO_MIN_VOLT + selector * step_mv) * 1000;
 731 }
 732
 733 /* Regulator ops (except VRTC) */
 734 static struct regulator_ops tps65910_ops_dcdc = {
 735         .is_enabled             = regulator_is_enabled_regmap,
 736         .enable                 = regulator_enable_regmap,
 737         .disable                = regulator_disable_regmap,
 738         .set_mode               = tps65910_set_mode,
 739         .get_mode               = tps65910_get_mode,
 740         .get_voltage_sel        = tps65910_get_voltage_dcdc_sel,
 741         .set_voltage_sel        = tps65910_set_voltage_dcdc_sel,
 742         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 743         .list_voltage           = tps65910_list_voltage_dcdc,
 744 };
 745
 746 static struct regulator_ops tps65910_ops_vdd3 = {
 747         .is_enabled             = regulator_is_enabled_regmap,
 748         .enable                 = regulator_enable_regmap,
 749         .disable                = regulator_disable_regmap,
 750         .set_mode               = tps65910_set_mode,
 751         .get_mode               = tps65910_get_mode,
 752         .get_voltage            = tps65910_get_voltage_vdd3,
 753         .list_voltage           = regulator_list_voltage_table,
 754 };
 755
 756 static struct regulator_ops tps65910_ops = {
 757         .is_enabled             = regulator_is_enabled_regmap,
 758         .enable                 = regulator_enable_regmap,
 759         .disable                = regulator_disable_regmap,
 760         .set_mode               = tps65910_set_mode,
 761         .get_mode               = tps65910_get_mode,
 762         .get_voltage_sel        = tps65910_get_voltage_sel,
 763         .set_voltage_sel        = tps65910_set_voltage_sel,
 764         .list_voltage           = regulator_list_voltage_table,
 765 };
 766
 767 static struct regulator_ops tps65911_ops = {
 768         .is_enabled             = regulator_is_enabled_regmap,
 769         .enable                 = regulator_enable_regmap,
 770         .disable                = regulator_disable_regmap,
 771         .set_mode               = tps65910_set_mode,
 772         .get_mode               = tps65910_get_mode,
 773         .get_voltage_sel        = tps65911_get_voltage_sel,
 774         .set_voltage_sel        = tps65911_set_voltage_sel,
 775         .list_voltage           = tps65911_list_voltage,
 776 };
 777
 778 static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic,
 779                 int id, int ext_sleep_config)
 780 {
 781         struct tps65910 *mfd = pmic->mfd;
 782         u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF;
 783         u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF);
 784         int ret;
 785
 786         /*
 787          * Regulator can not be control from multiple external input EN1, EN2
 788          * and EN3 together.
 789          */
 790         if (ext_sleep_config & EXT_SLEEP_CONTROL) {
 791                 int en_count;
 792                 en_count = ((ext_sleep_config &
 793                                 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0);
 794                 en_count += ((ext_sleep_config &
 795                                 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0);
 796                 en_count += ((ext_sleep_config &
 797                                 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0);
 798                 en_count += ((ext_sleep_config &
 799                                 TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0);
 800                 if (en_count > 1) {
 801                         dev_err(mfd->dev,
 802                                 "External sleep control flag is not proper\n");
 803                         return -EINVAL;
 804                 }
 805         }
 806
 807         pmic->board_ext_control[id] = ext_sleep_config;
 808
 809         /* External EN1 control */
 810         if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1)
 811                 ret = tps65910_reg_set_bits(mfd,
 812                                 TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
 813         else
 814                 ret = tps65910_reg_clear_bits(mfd,
 815                                 TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
 816         if (ret < 0) {
 817                 dev_err(mfd->dev,
 818                         "Error in configuring external control EN1\n");
 819                 return ret;
 820         }
 821
 822         /* External EN2 control */
 823         if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2)
 824                 ret = tps65910_reg_set_bits(mfd,
 825                                 TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
 826         else
 827                 ret = tps65910_reg_clear_bits(mfd,
 828                                 TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
 829         if (ret < 0) {
 830                 dev_err(mfd->dev,
 831                         "Error in configuring external control EN2\n");
 832                 return ret;
 833         }
 834
 835         /* External EN3 control for TPS65910 LDO only */
 836         if ((tps65910_chip_id(mfd) == TPS65910) &&
 837                         (id >= TPS65910_REG_VDIG1)) {
 838                 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3)
 839                         ret = tps65910_reg_set_bits(mfd,
 840                                 TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
 841                 else
 842                         ret = tps65910_reg_clear_bits(mfd,
 843                                 TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
 844                 if (ret < 0) {
 845                         dev_err(mfd->dev,
 846                                 "Error in configuring external control EN3\n");
 847                         return ret;
 848                 }
 849         }
 850
 851         /* Return if no external control is selected */
 852         if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) {
 853                 /* Clear all sleep controls */
 854                 ret = tps65910_reg_clear_bits(mfd,
 855                         TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
 856                 if (!ret)
 857                         ret = tps65910_reg_clear_bits(mfd,
 858                                 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
 859                 if (ret < 0)
 860                         dev_err(mfd->dev,
 861                                 "Error in configuring SLEEP register\n");
 862                 return ret;
 863         }
 864
 865         /*
 866          * For regulator that has separate operational and sleep register make
 867          * sure that operational is used and clear sleep register to turn
 868          * regulator off when external control is inactive
 869          */
 870         if ((id == TPS65910_REG_VDD1) ||
 871                 (id == TPS65910_REG_VDD2) ||
 872                         ((id == TPS65911_REG_VDDCTRL) &&
 873                                 (tps65910_chip_id(mfd) == TPS65911))) {
 874                 int op_reg_add = pmic->get_ctrl_reg(id) + 1;
 875                 int sr_reg_add = pmic->get_ctrl_reg(id) + 2;
 876                 int opvsel, srvsel;
 877
 878                 ret = tps65910_reg_read(pmic->mfd, op_reg_add, &opvsel);
 879                 if (ret < 0)
 880                         return ret;
 881                 ret = tps65910_reg_read(pmic->mfd, sr_reg_add, &srvsel);
 882                 if (ret < 0)
 883                         return ret;
 884
 885                 if (opvsel & VDD1_OP_CMD_MASK) {
 886                         u8 reg_val = srvsel & VDD1_OP_SEL_MASK;
 887
 888                         ret = tps65910_reg_write(pmic->mfd, op_reg_add,
 889                                                  reg_val);
 890                         if (ret < 0) {
 891                                 dev_err(mfd->dev,
 892                                         "Error in configuring op register\n");
 893                                 return ret;
 894                         }
 895                 }
 896                 ret = tps65910_reg_write(pmic->mfd, sr_reg_add, 0);
 897                 if (ret < 0) {
 898                         dev_err(mfd->dev, "Error in settting sr register\n");
 899                         return ret;
 900                 }
 901         }
 902
 903         ret = tps65910_reg_clear_bits(mfd,
 904                         TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
 905         if (!ret) {
 906                 if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
 907                         ret = tps65910_reg_set_bits(mfd,
 908                                 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
 909                 else
 910                         ret = tps65910_reg_clear_bits(mfd,
 911                                 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
 912         }
 913         if (ret < 0)
 914                 dev_err(mfd->dev,
 915                         "Error in configuring SLEEP register\n");
 916
 917         return ret;
 918 }
 919
 920 #ifdef CONFIG_OF
 921
 922 static struct of_regulator_match tps65910_matches[] = {
 923         { .name = "vrtc",       .driver_data = (void *) &tps65910_regs[0] },
 924         { .name = "vio",        .driver_data = (void *) &tps65910_regs[1] },
 925         { .name = "vdd1",       .driver_data = (void *) &tps65910_regs[2] },
 926         { .name = "vdd2",       .driver_data = (void *) &tps65910_regs[3] },
 927         { .name = "vdd3",       .driver_data = (void *) &tps65910_regs[4] },
 928         { .name = "vdig1",      .driver_data = (void *) &tps65910_regs[5] },
 929         { .name = "vdig2",      .driver_data = (void *) &tps65910_regs[6] },
 930         { .name = "vpll",       .driver_data = (void *) &tps65910_regs[7] },
 931         { .name = "vdac",       .driver_data = (void *) &tps65910_regs[8] },
 932         { .name = "vaux1",      .driver_data = (void *) &tps65910_regs[9] },
 933         { .name = "vaux2",      .driver_data = (void *) &tps65910_regs[10] },
 934         { .name = "vaux33",     .driver_data = (void *) &tps65910_regs[11] },
 935         { .name = "vmmc",       .driver_data = (void *) &tps65910_regs[12] },
 936 };
 937
 938 static struct of_regulator_match tps65911_matches[] = {
 939         { .name = "vrtc",       .driver_data = (void *) &tps65911_regs[0] },
 940         { .name = "vio",        .driver_data = (void *) &tps65911_regs[1] },
 941         { .name = "vdd1",       .driver_data = (void *) &tps65911_regs[2] },
 942         { .name = "vdd2",       .driver_data = (void *) &tps65911_regs[3] },
 943         { .name = "vddctrl",    .driver_data = (void *) &tps65911_regs[4] },
 944         { .name = "ldo1",       .driver_data = (void *) &tps65911_regs[5] },
 945         { .name = "ldo2",       .driver_data = (void *) &tps65911_regs[6] },
 946         { .name = "ldo3",       .driver_data = (void *) &tps65911_regs[7] },
 947         { .name = "ldo4",       .driver_data = (void *) &tps65911_regs[8] },
 948         { .name = "ldo5",       .driver_data = (void *) &tps65911_regs[9] },
 949         { .name = "ldo6",       .driver_data = (void *) &tps65911_regs[10] },
 950         { .name = "ldo7",       .driver_data = (void *) &tps65911_regs[11] },
 951         { .name = "ldo8",       .driver_data = (void *) &tps65911_regs[12] },
 952 };
 953
 954 static struct tps65910_board *tps65910_parse_dt_reg_data(
 955                 struct platform_device *pdev,
 956                 struct of_regulator_match **tps65910_reg_matches)
 957 {
 958         struct tps65910_board *pmic_plat_data;
 959         struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
 960         struct device_node *np = pdev->dev.parent->of_node;
 961         struct device_node *regulators;
 962         struct of_regulator_match *matches;
 963         unsigned int prop;
 964         int idx = 0, ret, count;
 965
 966         pmic_plat_data = devm_kzalloc(&pdev->dev, sizeof(*pmic_plat_data),
 967                                         GFP_KERNEL);
 968
 969         if (!pmic_plat_data) {
 970                 dev_err(&pdev->dev, "Failure to alloc pdata for regulators.\n");
 971                 return NULL;
 972         }
 973
 974         regulators = of_find_node_by_name(np, "regulators");
 975         if (!regulators) {
 976                 dev_err(&pdev->dev, "regulator node not found\n");
 977                 return NULL;
 978         }
 979
 980         switch (tps65910_chip_id(tps65910)) {
 981         case TPS65910:
 982                 count = ARRAY_SIZE(tps65910_matches);
 983                 matches = tps65910_matches;
 984                 break;
 985         case TPS65911:
 986                 count = ARRAY_SIZE(tps65911_matches);
 987                 matches = tps65911_matches;
 988                 break;
 989         default:
 990                 dev_err(&pdev->dev, "Invalid tps chip version\n");
 991                 return NULL;
 992         }
 993
 994         ret = of_regulator_match(pdev->dev.parent, regulators, matches, count);
 995         if (ret < 0) {
 996                 dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
 997                         ret);
 998                 return NULL;
 999         }
1000
1001         *tps65910_reg_matches = matches;
1002
1003         for (idx = 0; idx < count; idx++) {
1004                 struct tps_info *info = matches[idx].driver_data;
1005                 char in_supply[32]; /* 32 is max size of property name */
1006
1007                 if (!matches[idx].init_data || !matches[idx].of_node)
1008                         continue;
1009
1010                 pmic_plat_data->tps65910_pmic_init_data[idx] =
1011                                                         matches[idx].init_data;
1012
1013                 ret = of_property_read_u32(matches[idx].of_node,
1014                                 "ti,regulator-ext-sleep-control", &prop);
1015                 if (!ret)
1016                         pmic_plat_data->regulator_ext_sleep_control[idx] = prop;
1017
1018                 if (info->vin_name) {
1019                         snprintf(in_supply, 32, "%s-supply", info->vin_name);
1020                         if (of_find_property(np, in_supply, 0))
1021                                 pmic_plat_data->input_supply[idx] =
1022                                                                 info->vin_name;
1023                 }
1024         }
1025
1026         return pmic_plat_data;
1027 }
1028 #else
1029 static inline struct tps65910_board *tps65910_parse_dt_reg_data(
1030                         struct platform_device *pdev,
1031                         struct of_regulator_match **tps65910_reg_matches)
1032 {
1033         *tps65910_reg_matches = NULL;
1034         return NULL;
1035 }
1036 #endif
1037
1038 static __devinit int tps65910_probe(struct platform_device *pdev)
1039 {
1040         struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
1041         struct regulator_config config = { };
1042         struct tps_info *info;
1043         struct regulator_init_data *reg_data;
1044         struct regulator_dev *rdev;
1045         struct tps65910_reg *pmic;
1046         struct tps65910_board *pmic_plat_data;
1047         struct of_regulator_match *tps65910_reg_matches = NULL;
1048         int i, err;
1049
1050         pmic_plat_data = dev_get_platdata(tps65910->dev);
1051         if (!pmic_plat_data && tps65910->dev->of_node)
1052                 pmic_plat_data = tps65910_parse_dt_reg_data(pdev,
1053                                                 &tps65910_reg_matches);
1054
1055         if (!pmic_plat_data) {
1056                 dev_err(&pdev->dev, "Platform data not found\n");
1057                 return -EINVAL;
1058         }
1059
1060         pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
1061         if (!pmic) {
1062                 dev_err(&pdev->dev, "Memory allocation failed for pmic\n");
1063                 return -ENOMEM;
1064         }
1065
1066         pmic->mfd = tps65910;
1067         platform_set_drvdata(pdev, pmic);
1068
1069         /* Give control of all register to control port */
1070         tps65910_reg_set_bits(pmic->mfd, TPS65910_DEVCTRL,
1071                                 DEVCTRL_SR_CTL_I2C_SEL_MASK);
1072
1073         switch(tps65910_chip_id(tps65910)) {
1074         case TPS65910:
1075                 pmic->get_ctrl_reg = &tps65910_get_ctrl_register;
1076                 pmic->num_regulators = ARRAY_SIZE(tps65910_regs);
1077                 pmic->ext_sleep_control = tps65910_ext_sleep_control;
1078                 info = tps65910_regs;
1079                 break;
1080         case TPS65911:
1081                 pmic->get_ctrl_reg = &tps65911_get_ctrl_register;
1082                 pmic->num_regulators = ARRAY_SIZE(tps65911_regs);
1083                 pmic->ext_sleep_control = tps65911_ext_sleep_control;
1084                 info = tps65911_regs;
1085                 break;
1086         default:
1087                 dev_err(&pdev->dev, "Invalid tps chip version\n");
1088                 return -ENODEV;
1089         }
1090
1091         pmic->desc = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1092                         sizeof(struct regulator_desc), GFP_KERNEL);
1093         if (!pmic->desc) {
1094                 dev_err(&pdev->dev, "Memory alloc fails for desc\n");
1095                 return -ENOMEM;
1096         }
1097
1098         pmic->info = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1099                         sizeof(struct tps_info *), GFP_KERNEL);
1100         if (!pmic->info) {
1101                 dev_err(&pdev->dev, "Memory alloc fails for info\n");
1102                 return -ENOMEM;
1103         }
1104
1105         pmic->rdev = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1106                         sizeof(struct regulator_dev *), GFP_KERNEL);
1107         if (!pmic->rdev) {
1108                 dev_err(&pdev->dev, "Memory alloc fails for rdev\n");
1109                 return -ENOMEM;
1110         }
1111
1112         for (i = 0; i < pmic->num_regulators && i < TPS65910_NUM_REGS;
1113                         i++, info++) {
1114
1115                 reg_data = pmic_plat_data->tps65910_pmic_init_data[i];
1116
1117                 /* Regulator API handles empty constraints but not NULL
1118                  * constraints */
1119                 if (!reg_data)
1120                         continue;
1121
1122                 /* Register the regulators */
1123                 pmic->info[i] = info;
1124
1125                 pmic->desc[i].name = info->name;
1126                 pmic->desc[i].supply_name = pmic_plat_data->input_supply[i];
1127                 pmic->desc[i].id = i;
1128                 pmic->desc[i].n_voltages = info->n_voltages;
1129                 pmic->desc[i].enable_time = info->enable_time_us;
1130
1131                 if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) {
1132                         pmic->desc[i].ops = &tps65910_ops_dcdc;
1133                         pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE *
1134                                                         VDD1_2_NUM_VOLT_COARSE;
1135                         pmic->desc[i].ramp_delay = 12500;
1136                 } else if (i == TPS65910_REG_VDD3) {
1137                         if (tps65910_chip_id(tps65910) == TPS65910) {
1138                                 pmic->desc[i].ops = &tps65910_ops_vdd3;
1139                                 pmic->desc[i].volt_table = info->voltage_table;
1140                         } else {
1141                                 pmic->desc[i].ops = &tps65910_ops_dcdc;
1142                                 pmic->desc[i].ramp_delay = 5000;
1143                         }
1144                 } else {
1145                         if (tps65910_chip_id(tps65910) == TPS65910) {
1146                                 pmic->desc[i].ops = &tps65910_ops;
1147                                 pmic->desc[i].volt_table = info->voltage_table;
1148                         } else {
1149                                 pmic->desc[i].ops = &tps65911_ops;
1150                         }
1151                 }
1152
1153                 err = tps65910_set_ext_sleep_config(pmic, i,
1154                                 pmic_plat_data->regulator_ext_sleep_control[i]);
1155                 /*
1156                  * Failing on regulator for configuring externally control
1157                  * is not a serious issue, just throw warning.
1158                  */
1159                 if (err < 0)
1160                         dev_warn(tps65910->dev,
1161                                 "Failed to initialise ext control config\n");
1162
1163                 pmic->desc[i].type = REGULATOR_VOLTAGE;
1164                 pmic->desc[i].owner = THIS_MODULE;
1165                 pmic->desc[i].enable_reg = pmic->get_ctrl_reg(i);
1166                 pmic->desc[i].enable_mask = TPS65910_SUPPLY_STATE_ENABLED;
1167
1168                 config.dev = tps65910->dev;
1169                 config.init_data = reg_data;
1170                 config.driver_data = pmic;
1171                 config.regmap = tps65910->regmap;
1172
1173                 if (tps65910_reg_matches)
1174                         config.of_node = tps65910_reg_matches[i].of_node;
1175
1176                 rdev = regulator_register(&pmic->desc[i], &config);
1177                 if (IS_ERR(rdev)) {
1178                         dev_err(tps65910->dev,
1179                                 "failed to register %s regulator\n",
1180                                 pdev->name);
1181                         err = PTR_ERR(rdev);
1182                         goto err_unregister_regulator;
1183                 }
1184
1185                 /* Save regulator for cleanup */
1186                 pmic->rdev[i] = rdev;
1187         }
1188         return 0;
1189
1190 err_unregister_regulator:
1191         while (--i >= 0)
1192                 regulator_unregister(pmic->rdev[i]);
1193         return err;
1194 }
1195
1196 static int __devexit tps65910_remove(struct platform_device *pdev)
1197 {
1198         struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1199         int i;
1200
1201         for (i = 0; i < pmic->num_regulators; i++)
1202                 regulator_unregister(pmic->rdev[i]);
1203
1204         return 0;
1205 }
1206
1207 static void tps65910_shutdown(struct platform_device *pdev)
1208 {
1209         struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1210         int i;
1211
1212         /*
1213          * Before bootloader jumps to kernel, it makes sure that required
1214          * external control signals are in desired state so that given rails
1215          * can be configure accordingly.
1216          * If rails are configured to be controlled from external control
1217          * then before shutting down/rebooting the system, the external
1218          * control configuration need to be remove from the rails so that
1219          * its output will be available as per register programming even
1220          * if external controls are removed. This is require when the POR
1221          * value of the control signals are not in active state and before
1222          * bootloader initializes it, the system requires the rail output
1223          * to be active for booting.
1224          */
1225         for (i = 0; i < pmic->num_regulators; i++) {
1226                 int err;
1227                 if (!pmic->rdev[i])
1228                         continue;
1229
1230                 err = tps65910_set_ext_sleep_config(pmic, i, 0);
1231                 if (err < 0)
1232                         dev_err(&pdev->dev,
1233                                 "Error in clearing external control\n");
1234         }
1235 }
1236
1237 static struct platform_driver tps65910_driver = {
1238         .driver = {
1239                 .name = "tps65910-pmic",
1240                 .owner = THIS_MODULE,
1241         },
1242         .probe = tps65910_probe,
1243         .remove = __devexit_p(tps65910_remove),
1244         .shutdown = tps65910_shutdown,
1245 };
1246
1247 static int __init tps65910_init(void)
1248 {
1249         return platform_driver_register(&tps65910_driver);
1250 }
1251 subsys_initcall(tps65910_init);
1252
1253 static void __exit tps65910_cleanup(void)
1254 {
1255         platform_driver_unregister(&tps65910_driver);
1256 }
1257 module_exit(tps65910_cleanup);
1258
1259 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1260 MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver");
1261 MODULE_LICENSE("GPL v2");
1262 MODULE_ALIAS("platform:tps65910-pmic");