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