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 = 73,
 198                 .enable_time_us = 350,
 199         },
 200         {
 201                 .name = "vdd2",
 202                 .vin_name = "vcc2",
 203                 .n_voltages = 73,
 204                 .enable_time_us = 350,
 205         },
 206         {
 207                 .name = "vddctrl",
 208                 .n_voltages = 65,
 209                 .enable_time_us = 900,
 210         },
 211         {
 212                 .name = "ldo1",
 213                 .vin_name = "vcc6",
 214                 .n_voltages = 47,
 215                 .enable_time_us = 420,
 216         },
 217         {
 218                 .name = "ldo2",
 219                 .vin_name = "vcc6",
 220                 .n_voltages = 47,
 221                 .enable_time_us = 420,
 222         },
 223         {
 224                 .name = "ldo3",
 225                 .vin_name = "vcc5",
 226                 .n_voltages = 24,
 227                 .enable_time_us = 230,
 228         },
 229         {
 230                 .name = "ldo4",
 231                 .vin_name = "vcc5",
 232                 .n_voltages = 47,
 233                 .enable_time_us = 230,
 234         },
 235         {
 236                 .name = "ldo5",
 237                 .vin_name = "vcc4",
 238                 .n_voltages = 24,
 239                 .enable_time_us = 230,
 240         },
 241         {
 242                 .name = "ldo6",
 243                 .vin_name = "vcc3",
 244                 .n_voltages = 24,
 245                 .enable_time_us = 230,
 246         },
 247         {
 248                 .name = "ldo7",
 249                 .vin_name = "vcc3",
 250                 .n_voltages = 24,
 251                 .enable_time_us = 230,
 252         },
 253         {
 254                 .name = "ldo8",
 255                 .vin_name = "vcc3",
 256                 .n_voltages = 24,
 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         struct mutex mutex;
 300         int num_regulators;
 301         int mode;
 302         int  (*get_ctrl_reg)(int);
 303         unsigned int *ext_sleep_control;
 304         unsigned int board_ext_control[TPS65910_NUM_REGS];
 305 };
 306
 307 static inline int tps65910_read(struct tps65910_reg *pmic, u8 reg)
 308 {
 309         unsigned int val;
 310         int err;
 311
 312         err = tps65910_reg_read(pmic->mfd, reg, &val);
 313         if (err)
 314                 return err;
 315
 316         return val;
 317 }
 318
 319 static int tps65910_modify_bits(struct tps65910_reg *pmic, u8 reg,
 320                                         u8 set_mask, u8 clear_mask)
 321 {
 322         int err, data;
 323
 324         mutex_lock(&pmic->mutex);
 325
 326         data = tps65910_read(pmic, reg);
 327         if (data < 0) {
 328                 dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
 329                 err = data;
 330                 goto out;
 331         }
 332
 333         data &= ~clear_mask;
 334         data |= set_mask;
 335         err = tps65910_reg_write(pmic->mfd, reg, data);
 336         if (err)
 337                 dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);
 338
 339 out:
 340         mutex_unlock(&pmic->mutex);
 341         return err;
 342 }
 343
 344 static int tps65910_reg_read_locked(struct tps65910_reg *pmic, u8 reg)
 345 {
 346         int data;
 347
 348         mutex_lock(&pmic->mutex);
 349
 350         data = tps65910_read(pmic, reg);
 351         if (data < 0)
 352                 dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
 353
 354         mutex_unlock(&pmic->mutex);
 355         return data;
 356 }
 357
 358 static int tps65910_reg_write_locked(struct tps65910_reg *pmic, u8 reg, u8 val)
 359 {
 360         int err;
 361
 362         mutex_lock(&pmic->mutex);
 363
 364         err = tps65910_reg_write(pmic->mfd, reg, val);
 365         if (err < 0)
 366                 dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);
 367
 368         mutex_unlock(&pmic->mutex);
 369         return err;
 370 }
 371
 372 static int tps65910_get_ctrl_register(int id)
 373 {
 374         switch (id) {
 375         case TPS65910_REG_VRTC:
 376                 return TPS65910_VRTC;
 377         case TPS65910_REG_VIO:
 378                 return TPS65910_VIO;
 379         case TPS65910_REG_VDD1:
 380                 return TPS65910_VDD1;
 381         case TPS65910_REG_VDD2:
 382                 return TPS65910_VDD2;
 383         case TPS65910_REG_VDD3:
 384                 return TPS65910_VDD3;
 385         case TPS65910_REG_VDIG1:
 386                 return TPS65910_VDIG1;
 387         case TPS65910_REG_VDIG2:
 388                 return TPS65910_VDIG2;
 389         case TPS65910_REG_VPLL:
 390                 return TPS65910_VPLL;
 391         case TPS65910_REG_VDAC:
 392                 return TPS65910_VDAC;
 393         case TPS65910_REG_VAUX1:
 394                 return TPS65910_VAUX1;
 395         case TPS65910_REG_VAUX2:
 396                 return TPS65910_VAUX2;
 397         case TPS65910_REG_VAUX33:
 398                 return TPS65910_VAUX33;
 399         case TPS65910_REG_VMMC:
 400                 return TPS65910_VMMC;
 401         default:
 402                 return -EINVAL;
 403         }
 404 }
 405
 406 static int tps65911_get_ctrl_register(int id)
 407 {
 408         switch (id) {
 409         case TPS65910_REG_VRTC:
 410                 return TPS65910_VRTC;
 411         case TPS65910_REG_VIO:
 412                 return TPS65910_VIO;
 413         case TPS65910_REG_VDD1:
 414                 return TPS65910_VDD1;
 415         case TPS65910_REG_VDD2:
 416                 return TPS65910_VDD2;
 417         case TPS65911_REG_VDDCTRL:
 418                 return TPS65911_VDDCTRL;
 419         case TPS65911_REG_LDO1:
 420                 return TPS65911_LDO1;
 421         case TPS65911_REG_LDO2:
 422                 return TPS65911_LDO2;
 423         case TPS65911_REG_LDO3:
 424                 return TPS65911_LDO3;
 425         case TPS65911_REG_LDO4:
 426                 return TPS65911_LDO4;
 427         case TPS65911_REG_LDO5:
 428                 return TPS65911_LDO5;
 429         case TPS65911_REG_LDO6:
 430                 return TPS65911_LDO6;
 431         case TPS65911_REG_LDO7:
 432                 return TPS65911_LDO7;
 433         case TPS65911_REG_LDO8:
 434                 return TPS65911_LDO8;
 435         default:
 436                 return -EINVAL;
 437         }
 438 }
 439
 440 static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
 441 {
 442         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 443         struct tps65910 *mfd = pmic->mfd;
 444         int reg, value, id = rdev_get_id(dev);
 445
 446         reg = pmic->get_ctrl_reg(id);
 447         if (reg < 0)
 448                 return reg;
 449
 450         switch (mode) {
 451         case REGULATOR_MODE_NORMAL:
 452                 return tps65910_modify_bits(pmic, reg, LDO_ST_ON_BIT,
 453                                                         LDO_ST_MODE_BIT);
 454         case REGULATOR_MODE_IDLE:
 455                 value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT;
 456                 return tps65910_reg_set_bits(mfd, reg, value);
 457         case REGULATOR_MODE_STANDBY:
 458                 return tps65910_reg_clear_bits(mfd, reg, LDO_ST_ON_BIT);
 459         }
 460
 461         return -EINVAL;
 462 }
 463
 464 static unsigned int tps65910_get_mode(struct regulator_dev *dev)
 465 {
 466         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 467         int reg, value, id = rdev_get_id(dev);
 468
 469         reg = pmic->get_ctrl_reg(id);
 470         if (reg < 0)
 471                 return reg;
 472
 473         value = tps65910_reg_read_locked(pmic, reg);
 474         if (value < 0)
 475                 return value;
 476
 477         if (!(value & LDO_ST_ON_BIT))
 478                 return REGULATOR_MODE_STANDBY;
 479         else if (value & LDO_ST_MODE_BIT)
 480                 return REGULATOR_MODE_IDLE;
 481         else
 482                 return REGULATOR_MODE_NORMAL;
 483 }
 484
 485 static int tps65910_get_voltage_dcdc_sel(struct regulator_dev *dev)
 486 {
 487         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 488         int id = rdev_get_id(dev);
 489         int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0;
 490
 491         switch (id) {
 492         case TPS65910_REG_VDD1:
 493                 opvsel = tps65910_reg_read_locked(pmic, TPS65910_VDD1_OP);
 494                 mult = tps65910_reg_read_locked(pmic, TPS65910_VDD1);
 495                 mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT;
 496                 srvsel = tps65910_reg_read_locked(pmic, TPS65910_VDD1_SR);
 497                 sr = opvsel & VDD1_OP_CMD_MASK;
 498                 opvsel &= VDD1_OP_SEL_MASK;
 499                 srvsel &= VDD1_SR_SEL_MASK;
 500                 vselmax = 75;
 501                 break;
 502         case TPS65910_REG_VDD2:
 503                 opvsel = tps65910_reg_read_locked(pmic, TPS65910_VDD2_OP);
 504                 mult = tps65910_reg_read_locked(pmic, TPS65910_VDD2);
 505                 mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT;
 506                 srvsel = tps65910_reg_read_locked(pmic, TPS65910_VDD2_SR);
 507                 sr = opvsel & VDD2_OP_CMD_MASK;
 508                 opvsel &= VDD2_OP_SEL_MASK;
 509                 srvsel &= VDD2_SR_SEL_MASK;
 510                 vselmax = 75;
 511                 break;
 512         case TPS65911_REG_VDDCTRL:
 513                 opvsel = tps65910_reg_read_locked(pmic, TPS65911_VDDCTRL_OP);
 514                 srvsel = tps65910_reg_read_locked(pmic, TPS65911_VDDCTRL_SR);
 515                 sr = opvsel & VDDCTRL_OP_CMD_MASK;
 516                 opvsel &= VDDCTRL_OP_SEL_MASK;
 517                 srvsel &= VDDCTRL_SR_SEL_MASK;
 518                 vselmax = 64;
 519                 break;
 520         }
 521
 522         /* multiplier 0 == 1 but 2,3 normal */
 523         if (!mult)
 524                 mult=1;
 525
 526         if (sr) {
 527                 /* normalise to valid range */
 528                 if (srvsel < 3)
 529                         srvsel = 3;
 530                 if (srvsel > vselmax)
 531                         srvsel = vselmax;
 532                 return srvsel - 3;
 533         } else {
 534
 535                 /* normalise to valid range*/
 536                 if (opvsel < 3)
 537                         opvsel = 3;
 538                 if (opvsel > vselmax)
 539                         opvsel = vselmax;
 540                 return opvsel - 3;
 541         }
 542         return -EINVAL;
 543 }
 544
 545 static int tps65910_get_voltage_sel(struct regulator_dev *dev)
 546 {
 547         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 548         int reg, value, id = rdev_get_id(dev);
 549
 550         reg = pmic->get_ctrl_reg(id);
 551         if (reg < 0)
 552                 return reg;
 553
 554         value = tps65910_reg_read_locked(pmic, reg);
 555         if (value < 0)
 556                 return value;
 557
 558         switch (id) {
 559         case TPS65910_REG_VIO:
 560         case TPS65910_REG_VDIG1:
 561         case TPS65910_REG_VDIG2:
 562         case TPS65910_REG_VPLL:
 563         case TPS65910_REG_VDAC:
 564         case TPS65910_REG_VAUX1:
 565         case TPS65910_REG_VAUX2:
 566         case TPS65910_REG_VAUX33:
 567         case TPS65910_REG_VMMC:
 568                 value &= LDO_SEL_MASK;
 569                 value >>= LDO_SEL_SHIFT;
 570                 break;
 571         default:
 572                 return -EINVAL;
 573         }
 574
 575         return value;
 576 }
 577
 578 static int tps65910_get_voltage_vdd3(struct regulator_dev *dev)
 579 {
 580         return dev->desc->volt_table[0];
 581 }
 582
 583 static int tps65911_get_voltage_sel(struct regulator_dev *dev)
 584 {
 585         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 586         int id = rdev_get_id(dev);
 587         u8 value, reg;
 588
 589         reg = pmic->get_ctrl_reg(id);
 590
 591         value = tps65910_reg_read_locked(pmic, reg);
 592
 593         switch (id) {
 594         case TPS65911_REG_LDO1:
 595         case TPS65911_REG_LDO2:
 596         case TPS65911_REG_LDO4:
 597                 value &= LDO1_SEL_MASK;
 598                 value >>= LDO_SEL_SHIFT;
 599                 break;
 600         case TPS65911_REG_LDO3:
 601         case TPS65911_REG_LDO5:
 602         case TPS65911_REG_LDO6:
 603         case TPS65911_REG_LDO7:
 604         case TPS65911_REG_LDO8:
 605                 value &= LDO3_SEL_MASK;
 606                 value >>= LDO_SEL_SHIFT;
 607                 break;
 608         case TPS65910_REG_VIO:
 609                 value &= LDO_SEL_MASK;
 610                 value >>= LDO_SEL_SHIFT;
 611                 break;
 612         default:
 613                 return -EINVAL;
 614         }
 615
 616         return value;
 617 }
 618
 619 static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev,
 620                                          unsigned selector)
 621 {
 622         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 623         int id = rdev_get_id(dev), vsel;
 624         int dcdc_mult = 0;
 625
 626         switch (id) {
 627         case TPS65910_REG_VDD1:
 628                 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
 629                 if (dcdc_mult == 1)
 630                         dcdc_mult--;
 631                 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
 632
 633                 tps65910_modify_bits(pmic, TPS65910_VDD1,
 634                                 (dcdc_mult << VDD1_VGAIN_SEL_SHIFT),
 635                                                 VDD1_VGAIN_SEL_MASK);
 636                 tps65910_reg_write_locked(pmic, TPS65910_VDD1_OP, vsel);
 637                 break;
 638         case TPS65910_REG_VDD2:
 639                 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
 640                 if (dcdc_mult == 1)
 641                         dcdc_mult--;
 642                 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
 643
 644                 tps65910_modify_bits(pmic, TPS65910_VDD2,
 645                                 (dcdc_mult << VDD2_VGAIN_SEL_SHIFT),
 646                                                 VDD1_VGAIN_SEL_MASK);
 647                 tps65910_reg_write_locked(pmic, TPS65910_VDD2_OP, vsel);
 648                 break;
 649         case TPS65911_REG_VDDCTRL:
 650                 vsel = selector + 3;
 651                 tps65910_reg_write_locked(pmic, TPS65911_VDDCTRL_OP, vsel);
 652         }
 653
 654         return 0;
 655 }
 656
 657 static int tps65910_set_voltage_sel(struct regulator_dev *dev,
 658                                     unsigned selector)
 659 {
 660         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 661         int reg, id = rdev_get_id(dev);
 662
 663         reg = pmic->get_ctrl_reg(id);
 664         if (reg < 0)
 665                 return reg;
 666
 667         switch (id) {
 668         case TPS65910_REG_VIO:
 669         case TPS65910_REG_VDIG1:
 670         case TPS65910_REG_VDIG2:
 671         case TPS65910_REG_VPLL:
 672         case TPS65910_REG_VDAC:
 673         case TPS65910_REG_VAUX1:
 674         case TPS65910_REG_VAUX2:
 675         case TPS65910_REG_VAUX33:
 676         case TPS65910_REG_VMMC:
 677                 return tps65910_modify_bits(pmic, reg,
 678                                 (selector << LDO_SEL_SHIFT), LDO_SEL_MASK);
 679         }
 680
 681         return -EINVAL;
 682 }
 683
 684 static int tps65911_set_voltage_sel(struct regulator_dev *dev,
 685                                     unsigned selector)
 686 {
 687         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 688         int reg, id = rdev_get_id(dev);
 689
 690         reg = pmic->get_ctrl_reg(id);
 691         if (reg < 0)
 692                 return reg;
 693
 694         switch (id) {
 695         case TPS65911_REG_LDO1:
 696         case TPS65911_REG_LDO2:
 697         case TPS65911_REG_LDO4:
 698                 return tps65910_modify_bits(pmic, reg,
 699                                 (selector << LDO_SEL_SHIFT), LDO1_SEL_MASK);
 700         case TPS65911_REG_LDO3:
 701         case TPS65911_REG_LDO5:
 702         case TPS65911_REG_LDO6:
 703         case TPS65911_REG_LDO7:
 704         case TPS65911_REG_LDO8:
 705                 return tps65910_modify_bits(pmic, reg,
 706                                 (selector << LDO_SEL_SHIFT), LDO3_SEL_MASK);
 707         case TPS65910_REG_VIO:
 708                 return tps65910_modify_bits(pmic, reg,
 709                                 (selector << LDO_SEL_SHIFT), LDO_SEL_MASK);
 710         }
 711
 712         return -EINVAL;
 713 }
 714
 715
 716 static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
 717                                         unsigned selector)
 718 {
 719         int volt, mult = 1, id = rdev_get_id(dev);
 720
 721         switch (id) {
 722         case TPS65910_REG_VDD1:
 723         case TPS65910_REG_VDD2:
 724                 mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
 725                 volt = VDD1_2_MIN_VOLT +
 726                                 (selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET;
 727                 break;
 728         case TPS65911_REG_VDDCTRL:
 729                 volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET);
 730                 break;
 731         default:
 732                 BUG();
 733                 return -EINVAL;
 734         }
 735
 736         return  volt * 100 * mult;
 737 }
 738
 739 static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector)
 740 {
 741         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
 742         int step_mv = 0, id = rdev_get_id(dev);
 743
 744         switch(id) {
 745         case TPS65911_REG_LDO1:
 746         case TPS65911_REG_LDO2:
 747         case TPS65911_REG_LDO4:
 748                 /* The first 5 values of the selector correspond to 1V */
 749                 if (selector < 5)
 750                         selector = 0;
 751                 else
 752                         selector -= 4;
 753
 754                 step_mv = 50;
 755                 break;
 756         case TPS65911_REG_LDO3:
 757         case TPS65911_REG_LDO5:
 758         case TPS65911_REG_LDO6:
 759         case TPS65911_REG_LDO7:
 760         case TPS65911_REG_LDO8:
 761                 /* The first 3 values of the selector correspond to 1V */
 762                 if (selector < 3)
 763                         selector = 0;
 764                 else
 765                         selector -= 2;
 766
 767                 step_mv = 100;
 768                 break;
 769         case TPS65910_REG_VIO:
 770                 return pmic->info[id]->voltage_table[selector];
 771         default:
 772                 return -EINVAL;
 773         }
 774
 775         return (LDO_MIN_VOLT + selector * step_mv) * 1000;
 776 }
 777
 778 /* Regulator ops (except VRTC) */
 779 static struct regulator_ops tps65910_ops_dcdc = {
 780         .is_enabled             = regulator_is_enabled_regmap,
 781         .enable                 = regulator_enable_regmap,
 782         .disable                = regulator_disable_regmap,
 783         .set_mode               = tps65910_set_mode,
 784         .get_mode               = tps65910_get_mode,
 785         .get_voltage_sel        = tps65910_get_voltage_dcdc_sel,
 786         .set_voltage_sel        = tps65910_set_voltage_dcdc_sel,
 787         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 788         .list_voltage           = tps65910_list_voltage_dcdc,
 789 };
 790
 791 static struct regulator_ops tps65910_ops_vdd3 = {
 792         .is_enabled             = regulator_is_enabled_regmap,
 793         .enable                 = regulator_enable_regmap,
 794         .disable                = regulator_disable_regmap,
 795         .set_mode               = tps65910_set_mode,
 796         .get_mode               = tps65910_get_mode,
 797         .get_voltage            = tps65910_get_voltage_vdd3,
 798         .list_voltage           = regulator_list_voltage_table,
 799 };
 800
 801 static struct regulator_ops tps65910_ops = {
 802         .is_enabled             = regulator_is_enabled_regmap,
 803         .enable                 = regulator_enable_regmap,
 804         .disable                = regulator_disable_regmap,
 805         .set_mode               = tps65910_set_mode,
 806         .get_mode               = tps65910_get_mode,
 807         .get_voltage_sel        = tps65910_get_voltage_sel,
 808         .set_voltage_sel        = tps65910_set_voltage_sel,
 809         .list_voltage           = regulator_list_voltage_table,
 810 };
 811
 812 static struct regulator_ops tps65911_ops = {
 813         .is_enabled             = regulator_is_enabled_regmap,
 814         .enable                 = regulator_enable_regmap,
 815         .disable                = regulator_disable_regmap,
 816         .set_mode               = tps65910_set_mode,
 817         .get_mode               = tps65910_get_mode,
 818         .get_voltage_sel        = tps65911_get_voltage_sel,
 819         .set_voltage_sel        = tps65911_set_voltage_sel,
 820         .list_voltage           = tps65911_list_voltage,
 821 };
 822
 823 static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic,
 824                 int id, int ext_sleep_config)
 825 {
 826         struct tps65910 *mfd = pmic->mfd;
 827         u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF;
 828         u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF);
 829         int ret;
 830
 831         /*
 832          * Regulator can not be control from multiple external input EN1, EN2
 833          * and EN3 together.
 834          */
 835         if (ext_sleep_config & EXT_SLEEP_CONTROL) {
 836                 int en_count;
 837                 en_count = ((ext_sleep_config &
 838                                 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0);
 839                 en_count += ((ext_sleep_config &
 840                                 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0);
 841                 en_count += ((ext_sleep_config &
 842                                 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0);
 843                 en_count += ((ext_sleep_config &
 844                                 TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0);
 845                 if (en_count > 1) {
 846                         dev_err(mfd->dev,
 847                                 "External sleep control flag is not proper\n");
 848                         return -EINVAL;
 849                 }
 850         }
 851
 852         pmic->board_ext_control[id] = ext_sleep_config;
 853
 854         /* External EN1 control */
 855         if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1)
 856                 ret = tps65910_reg_set_bits(mfd,
 857                                 TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
 858         else
 859                 ret = tps65910_reg_clear_bits(mfd,
 860                                 TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
 861         if (ret < 0) {
 862                 dev_err(mfd->dev,
 863                         "Error in configuring external control EN1\n");
 864                 return ret;
 865         }
 866
 867         /* External EN2 control */
 868         if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2)
 869                 ret = tps65910_reg_set_bits(mfd,
 870                                 TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
 871         else
 872                 ret = tps65910_reg_clear_bits(mfd,
 873                                 TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
 874         if (ret < 0) {
 875                 dev_err(mfd->dev,
 876                         "Error in configuring external control EN2\n");
 877                 return ret;
 878         }
 879
 880         /* External EN3 control for TPS65910 LDO only */
 881         if ((tps65910_chip_id(mfd) == TPS65910) &&
 882                         (id >= TPS65910_REG_VDIG1)) {
 883                 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3)
 884                         ret = tps65910_reg_set_bits(mfd,
 885                                 TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
 886                 else
 887                         ret = tps65910_reg_clear_bits(mfd,
 888                                 TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
 889                 if (ret < 0) {
 890                         dev_err(mfd->dev,
 891                                 "Error in configuring external control EN3\n");
 892                         return ret;
 893                 }
 894         }
 895
 896         /* Return if no external control is selected */
 897         if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) {
 898                 /* Clear all sleep controls */
 899                 ret = tps65910_reg_clear_bits(mfd,
 900                         TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
 901                 if (!ret)
 902                         ret = tps65910_reg_clear_bits(mfd,
 903                                 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
 904                 if (ret < 0)
 905                         dev_err(mfd->dev,
 906                                 "Error in configuring SLEEP register\n");
 907                 return ret;
 908         }
 909
 910         /*
 911          * For regulator that has separate operational and sleep register make
 912          * sure that operational is used and clear sleep register to turn
 913          * regulator off when external control is inactive
 914          */
 915         if ((id == TPS65910_REG_VDD1) ||
 916                 (id == TPS65910_REG_VDD2) ||
 917                         ((id == TPS65911_REG_VDDCTRL) &&
 918                                 (tps65910_chip_id(mfd) == TPS65911))) {
 919                 int op_reg_add = pmic->get_ctrl_reg(id) + 1;
 920                 int sr_reg_add = pmic->get_ctrl_reg(id) + 2;
 921                 int opvsel = tps65910_reg_read_locked(pmic, op_reg_add);
 922                 int srvsel = tps65910_reg_read_locked(pmic, sr_reg_add);
 923                 if (opvsel & VDD1_OP_CMD_MASK) {
 924                         u8 reg_val = srvsel & VDD1_OP_SEL_MASK;
 925                         ret = tps65910_reg_write_locked(pmic, op_reg_add,
 926                                                         reg_val);
 927                         if (ret < 0) {
 928                                 dev_err(mfd->dev,
 929                                         "Error in configuring op register\n");
 930                                 return ret;
 931                         }
 932                 }
 933                 ret = tps65910_reg_write_locked(pmic, sr_reg_add, 0);
 934                 if (ret < 0) {
 935                         dev_err(mfd->dev, "Error in settting sr register\n");
 936                         return ret;
 937                 }
 938         }
 939
 940         ret = tps65910_reg_clear_bits(mfd,
 941                         TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
 942         if (!ret) {
 943                 if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
 944                         ret = tps65910_reg_set_bits(mfd,
 945                                 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
 946                 else
 947                         ret = tps65910_reg_clear_bits(mfd,
 948                                 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
 949         }
 950         if (ret < 0)
 951                 dev_err(mfd->dev,
 952                         "Error in configuring SLEEP register\n");
 953
 954         return ret;
 955 }
 956
 957 #ifdef CONFIG_OF
 958
 959 static struct of_regulator_match tps65910_matches[] = {
 960         { .name = "vrtc",       .driver_data = (void *) &tps65910_regs[0] },
 961         { .name = "vio",        .driver_data = (void *) &tps65910_regs[1] },
 962         { .name = "vdd1",       .driver_data = (void *) &tps65910_regs[2] },
 963         { .name = "vdd2",       .driver_data = (void *) &tps65910_regs[3] },
 964         { .name = "vdd3",       .driver_data = (void *) &tps65910_regs[4] },
 965         { .name = "vdig1",      .driver_data = (void *) &tps65910_regs[5] },
 966         { .name = "vdig2",      .driver_data = (void *) &tps65910_regs[6] },
 967         { .name = "vpll",       .driver_data = (void *) &tps65910_regs[7] },
 968         { .name = "vdac",       .driver_data = (void *) &tps65910_regs[8] },
 969         { .name = "vaux1",      .driver_data = (void *) &tps65910_regs[9] },
 970         { .name = "vaux2",      .driver_data = (void *) &tps65910_regs[10] },
 971         { .name = "vaux33",     .driver_data = (void *) &tps65910_regs[11] },
 972         { .name = "vmmc",       .driver_data = (void *) &tps65910_regs[12] },
 973 };
 974
 975 static struct of_regulator_match tps65911_matches[] = {
 976         { .name = "vrtc",       .driver_data = (void *) &tps65911_regs[0] },
 977         { .name = "vio",        .driver_data = (void *) &tps65911_regs[1] },
 978         { .name = "vdd1",       .driver_data = (void *) &tps65911_regs[2] },
 979         { .name = "vdd2",       .driver_data = (void *) &tps65911_regs[3] },
 980         { .name = "vddctrl",    .driver_data = (void *) &tps65911_regs[4] },
 981         { .name = "ldo1",       .driver_data = (void *) &tps65911_regs[5] },
 982         { .name = "ldo2",       .driver_data = (void *) &tps65911_regs[6] },
 983         { .name = "ldo3",       .driver_data = (void *) &tps65911_regs[7] },
 984         { .name = "ldo4",       .driver_data = (void *) &tps65911_regs[8] },
 985         { .name = "ldo5",       .driver_data = (void *) &tps65911_regs[9] },
 986         { .name = "ldo6",       .driver_data = (void *) &tps65911_regs[10] },
 987         { .name = "ldo7",       .driver_data = (void *) &tps65911_regs[11] },
 988         { .name = "ldo8",       .driver_data = (void *) &tps65911_regs[12] },
 989 };
 990
 991 static struct tps65910_board *tps65910_parse_dt_reg_data(
 992                 struct platform_device *pdev,
 993                 struct of_regulator_match **tps65910_reg_matches)
 994 {
 995         struct tps65910_board *pmic_plat_data;
 996         struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
 997         struct device_node *np = pdev->dev.parent->of_node;
 998         struct device_node *regulators;
 999         struct of_regulator_match *matches;
1000         unsigned int prop;
1001         int idx = 0, ret, count;
1002
1003         pmic_plat_data = devm_kzalloc(&pdev->dev, sizeof(*pmic_plat_data),
1004                                         GFP_KERNEL);
1005
1006         if (!pmic_plat_data) {
1007                 dev_err(&pdev->dev, "Failure to alloc pdata for regulators.\n");
1008                 return NULL;
1009         }
1010
1011         regulators = of_find_node_by_name(np, "regulators");
1012         if (!regulators) {
1013                 dev_err(&pdev->dev, "regulator node not found\n");
1014                 return NULL;
1015         }
1016
1017         switch (tps65910_chip_id(tps65910)) {
1018         case TPS65910:
1019                 count = ARRAY_SIZE(tps65910_matches);
1020                 matches = tps65910_matches;
1021                 break;
1022         case TPS65911:
1023                 count = ARRAY_SIZE(tps65911_matches);
1024                 matches = tps65911_matches;
1025                 break;
1026         default:
1027                 dev_err(&pdev->dev, "Invalid tps chip version\n");
1028                 return NULL;
1029         }
1030
1031         ret = of_regulator_match(pdev->dev.parent, regulators, matches, count);
1032         if (ret < 0) {
1033                 dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
1034                         ret);
1035                 return NULL;
1036         }
1037
1038         *tps65910_reg_matches = matches;
1039
1040         for (idx = 0; idx < count; idx++) {
1041                 struct tps_info *info = matches[idx].driver_data;
1042                 char in_supply[32]; /* 32 is max size of property name */
1043
1044                 if (!matches[idx].init_data || !matches[idx].of_node)
1045                         continue;
1046
1047                 pmic_plat_data->tps65910_pmic_init_data[idx] =
1048                                                         matches[idx].init_data;
1049
1050                 ret = of_property_read_u32(matches[idx].of_node,
1051                                 "ti,regulator-ext-sleep-control", &prop);
1052                 if (!ret)
1053                         pmic_plat_data->regulator_ext_sleep_control[idx] = prop;
1054
1055                 if (info->vin_name) {
1056                         snprintf(in_supply, 32, "%s-supply", info->vin_name);
1057                         if (of_find_property(np, in_supply, 0))
1058                                 pmic_plat_data->input_supply[idx] =
1059                                                                 info->vin_name;
1060                 }
1061         }
1062
1063         return pmic_plat_data;
1064 }
1065 #else
1066 static inline struct tps65910_board *tps65910_parse_dt_reg_data(
1067                         struct platform_device *pdev,
1068                         struct of_regulator_match **tps65910_reg_matches)
1069 {
1070         *tps65910_reg_matches = NULL;
1071         return NULL;
1072 }
1073 #endif
1074
1075 static __devinit int tps65910_probe(struct platform_device *pdev)
1076 {
1077         struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
1078         struct regulator_config config = { };
1079         struct tps_info *info;
1080         struct regulator_init_data *reg_data;
1081         struct regulator_dev *rdev;
1082         struct tps65910_reg *pmic;
1083         struct tps65910_board *pmic_plat_data;
1084         struct of_regulator_match *tps65910_reg_matches = NULL;
1085         int i, err;
1086
1087         pmic_plat_data = dev_get_platdata(tps65910->dev);
1088         if (!pmic_plat_data && tps65910->dev->of_node)
1089                 pmic_plat_data = tps65910_parse_dt_reg_data(pdev,
1090                                                 &tps65910_reg_matches);
1091
1092         if (!pmic_plat_data) {
1093                 dev_err(&pdev->dev, "Platform data not found\n");
1094                 return -EINVAL;
1095         }
1096
1097         pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
1098         if (!pmic) {
1099                 dev_err(&pdev->dev, "Memory allocation failed for pmic\n");
1100                 return -ENOMEM;
1101         }
1102
1103         mutex_init(&pmic->mutex);
1104         pmic->mfd = tps65910;
1105         platform_set_drvdata(pdev, pmic);
1106
1107         /* Give control of all register to control port */
1108         tps65910_reg_set_bits(pmic->mfd, TPS65910_DEVCTRL,
1109                                 DEVCTRL_SR_CTL_I2C_SEL_MASK);
1110
1111         switch(tps65910_chip_id(tps65910)) {
1112         case TPS65910:
1113                 pmic->get_ctrl_reg = &tps65910_get_ctrl_register;
1114                 pmic->num_regulators = ARRAY_SIZE(tps65910_regs);
1115                 pmic->ext_sleep_control = tps65910_ext_sleep_control;
1116                 info = tps65910_regs;
1117                 break;
1118         case TPS65911:
1119                 pmic->get_ctrl_reg = &tps65911_get_ctrl_register;
1120                 pmic->num_regulators = ARRAY_SIZE(tps65911_regs);
1121                 pmic->ext_sleep_control = tps65911_ext_sleep_control;
1122                 info = tps65911_regs;
1123                 break;
1124         default:
1125                 dev_err(&pdev->dev, "Invalid tps chip version\n");
1126                 return -ENODEV;
1127         }
1128
1129         pmic->desc = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1130                         sizeof(struct regulator_desc), GFP_KERNEL);
1131         if (!pmic->desc) {
1132                 dev_err(&pdev->dev, "Memory alloc fails for desc\n");
1133                 return -ENOMEM;
1134         }
1135
1136         pmic->info = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1137                         sizeof(struct tps_info *), GFP_KERNEL);
1138         if (!pmic->info) {
1139                 dev_err(&pdev->dev, "Memory alloc fails for info\n");
1140                 return -ENOMEM;
1141         }
1142
1143         pmic->rdev = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1144                         sizeof(struct regulator_dev *), GFP_KERNEL);
1145         if (!pmic->rdev) {
1146                 dev_err(&pdev->dev, "Memory alloc fails for rdev\n");
1147                 return -ENOMEM;
1148         }
1149
1150         for (i = 0; i < pmic->num_regulators && i < TPS65910_NUM_REGS;
1151                         i++, info++) {
1152
1153                 reg_data = pmic_plat_data->tps65910_pmic_init_data[i];
1154
1155                 /* Regulator API handles empty constraints but not NULL
1156                  * constraints */
1157                 if (!reg_data)
1158                         continue;
1159
1160                 /* Register the regulators */
1161                 pmic->info[i] = info;
1162
1163                 pmic->desc[i].name = info->name;
1164                 pmic->desc[i].supply_name = pmic_plat_data->input_supply[i];
1165                 pmic->desc[i].id = i;
1166                 pmic->desc[i].n_voltages = info->n_voltages;
1167                 pmic->desc[i].enable_time = info->enable_time_us;
1168
1169                 if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) {
1170                         pmic->desc[i].ops = &tps65910_ops_dcdc;
1171                         pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE *
1172                                                         VDD1_2_NUM_VOLT_COARSE;
1173                         pmic->desc[i].ramp_delay = 12500;
1174                 } else if (i == TPS65910_REG_VDD3) {
1175                         if (tps65910_chip_id(tps65910) == TPS65910) {
1176                                 pmic->desc[i].ops = &tps65910_ops_vdd3;
1177                                 pmic->desc[i].volt_table = info->voltage_table;
1178                         } else {
1179                                 pmic->desc[i].ops = &tps65910_ops_dcdc;
1180                                 pmic->desc[i].ramp_delay = 5000;
1181                         }
1182                 } else {
1183                         if (tps65910_chip_id(tps65910) == TPS65910) {
1184                                 pmic->desc[i].ops = &tps65910_ops;
1185                                 pmic->desc[i].volt_table = info->voltage_table;
1186                         } else {
1187                                 pmic->desc[i].ops = &tps65911_ops;
1188                         }
1189                 }
1190
1191                 err = tps65910_set_ext_sleep_config(pmic, i,
1192                                 pmic_plat_data->regulator_ext_sleep_control[i]);
1193                 /*
1194                  * Failing on regulator for configuring externally control
1195                  * is not a serious issue, just throw warning.
1196                  */
1197                 if (err < 0)
1198                         dev_warn(tps65910->dev,
1199                                 "Failed to initialise ext control config\n");
1200
1201                 pmic->desc[i].type = REGULATOR_VOLTAGE;
1202                 pmic->desc[i].owner = THIS_MODULE;
1203                 pmic->desc[i].enable_reg = pmic->get_ctrl_reg(i);
1204                 pmic->desc[i].enable_mask = TPS65910_SUPPLY_STATE_ENABLED;
1205
1206                 config.dev = tps65910->dev;
1207                 config.init_data = reg_data;
1208                 config.driver_data = pmic;
1209                 config.regmap = tps65910->regmap;
1210
1211                 if (tps65910_reg_matches)
1212                         config.of_node = tps65910_reg_matches[i].of_node;
1213
1214                 rdev = regulator_register(&pmic->desc[i], &config);
1215                 if (IS_ERR(rdev)) {
1216                         dev_err(tps65910->dev,
1217                                 "failed to register %s regulator\n",
1218                                 pdev->name);
1219                         err = PTR_ERR(rdev);
1220                         goto err_unregister_regulator;
1221                 }
1222
1223                 /* Save regulator for cleanup */
1224                 pmic->rdev[i] = rdev;
1225         }
1226         return 0;
1227
1228 err_unregister_regulator:
1229         while (--i >= 0)
1230                 regulator_unregister(pmic->rdev[i]);
1231         return err;
1232 }
1233
1234 static int __devexit tps65910_remove(struct platform_device *pdev)
1235 {
1236         struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1237         int i;
1238
1239         for (i = 0; i < pmic->num_regulators; i++)
1240                 regulator_unregister(pmic->rdev[i]);
1241
1242         return 0;
1243 }
1244
1245 static void tps65910_shutdown(struct platform_device *pdev)
1246 {
1247         struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1248         int i;
1249
1250         /*
1251          * Before bootloader jumps to kernel, it makes sure that required
1252          * external control signals are in desired state so that given rails
1253          * can be configure accordingly.
1254          * If rails are configured to be controlled from external control
1255          * then before shutting down/rebooting the system, the external
1256          * control configuration need to be remove from the rails so that
1257          * its output will be available as per register programming even
1258          * if external controls are removed. This is require when the POR
1259          * value of the control signals are not in active state and before
1260          * bootloader initializes it, the system requires the rail output
1261          * to be active for booting.
1262          */
1263         for (i = 0; i < pmic->num_regulators; i++) {
1264                 int err;
1265                 if (!pmic->rdev[i])
1266                         continue;
1267
1268                 err = tps65910_set_ext_sleep_config(pmic, i, 0);
1269                 if (err < 0)
1270                         dev_err(&pdev->dev,
1271                                 "Error in clearing external control\n");
1272         }
1273 }
1274
1275 static struct platform_driver tps65910_driver = {
1276         .driver = {
1277                 .name = "tps65910-pmic",
1278                 .owner = THIS_MODULE,
1279         },
1280         .probe = tps65910_probe,
1281         .remove = __devexit_p(tps65910_remove),
1282         .shutdown = tps65910_shutdown,
1283 };
1284
1285 static int __init tps65910_init(void)
1286 {
1287         return platform_driver_register(&tps65910_driver);
1288 }
1289 subsys_initcall(tps65910_init);
1290
1291 static void __exit tps65910_cleanup(void)
1292 {
1293         platform_driver_unregister(&tps65910_driver);
1294 }
1295 module_exit(tps65910_cleanup);
1296
1297 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1298 MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver");
1299 MODULE_LICENSE("GPL v2");
1300 MODULE_ALIAS("platform:tps65910-pmic");