linux/drivers/regulator/palmas-regulator.c
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   1/*
   2 * Driver for Regulator part of Palmas PMIC Chips
   3 *
   4 * Copyright 2011-2013 Texas Instruments Inc.
   5 *
   6 * Author: Graeme Gregory <gg@slimlogic.co.uk>
   7 * Author: Ian Lartey <ian@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/regmap.h>
  25#include <linux/mfd/palmas.h>
  26#include <linux/of.h>
  27#include <linux/of_platform.h>
  28#include <linux/regulator/of_regulator.h>
  29
  30static const struct regulator_linear_range smps_low_ranges[] = {
  31        REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
  32        REGULATOR_LINEAR_RANGE(500000, 0x1, 0x6, 0),
  33        REGULATOR_LINEAR_RANGE(510000, 0x7, 0x79, 10000),
  34        REGULATOR_LINEAR_RANGE(1650000, 0x7A, 0x7f, 0),
  35};
  36
  37static const struct regulator_linear_range smps_high_ranges[] = {
  38        REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
  39        REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x6, 0),
  40        REGULATOR_LINEAR_RANGE(1020000, 0x7, 0x79, 20000),
  41        REGULATOR_LINEAR_RANGE(3300000, 0x7A, 0x7f, 0),
  42};
  43
  44static struct palmas_regs_info palmas_generic_regs_info[] = {
  45        {
  46                .name           = "SMPS12",
  47                .sname          = "smps1-in",
  48                .vsel_addr      = PALMAS_SMPS12_VOLTAGE,
  49                .ctrl_addr      = PALMAS_SMPS12_CTRL,
  50                .tstep_addr     = PALMAS_SMPS12_TSTEP,
  51                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
  52        },
  53        {
  54                .name           = "SMPS123",
  55                .sname          = "smps1-in",
  56                .vsel_addr      = PALMAS_SMPS12_VOLTAGE,
  57                .ctrl_addr      = PALMAS_SMPS12_CTRL,
  58                .tstep_addr     = PALMAS_SMPS12_TSTEP,
  59                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
  60        },
  61        {
  62                .name           = "SMPS3",
  63                .sname          = "smps3-in",
  64                .vsel_addr      = PALMAS_SMPS3_VOLTAGE,
  65                .ctrl_addr      = PALMAS_SMPS3_CTRL,
  66                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS3,
  67        },
  68        {
  69                .name           = "SMPS45",
  70                .sname          = "smps4-in",
  71                .vsel_addr      = PALMAS_SMPS45_VOLTAGE,
  72                .ctrl_addr      = PALMAS_SMPS45_CTRL,
  73                .tstep_addr     = PALMAS_SMPS45_TSTEP,
  74                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
  75        },
  76        {
  77                .name           = "SMPS457",
  78                .sname          = "smps4-in",
  79                .vsel_addr      = PALMAS_SMPS45_VOLTAGE,
  80                .ctrl_addr      = PALMAS_SMPS45_CTRL,
  81                .tstep_addr     = PALMAS_SMPS45_TSTEP,
  82                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
  83        },
  84        {
  85                .name           = "SMPS6",
  86                .sname          = "smps6-in",
  87                .vsel_addr      = PALMAS_SMPS6_VOLTAGE,
  88                .ctrl_addr      = PALMAS_SMPS6_CTRL,
  89                .tstep_addr     = PALMAS_SMPS6_TSTEP,
  90                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS6,
  91        },
  92        {
  93                .name           = "SMPS7",
  94                .sname          = "smps7-in",
  95                .vsel_addr      = PALMAS_SMPS7_VOLTAGE,
  96                .ctrl_addr      = PALMAS_SMPS7_CTRL,
  97                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS7,
  98        },
  99        {
 100                .name           = "SMPS8",
 101                .sname          = "smps8-in",
 102                .vsel_addr      = PALMAS_SMPS8_VOLTAGE,
 103                .ctrl_addr      = PALMAS_SMPS8_CTRL,
 104                .tstep_addr     = PALMAS_SMPS8_TSTEP,
 105                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS8,
 106        },
 107        {
 108                .name           = "SMPS9",
 109                .sname          = "smps9-in",
 110                .vsel_addr      = PALMAS_SMPS9_VOLTAGE,
 111                .ctrl_addr      = PALMAS_SMPS9_CTRL,
 112                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS9,
 113        },
 114        {
 115                .name           = "SMPS10_OUT2",
 116                .sname          = "smps10-in",
 117                .ctrl_addr      = PALMAS_SMPS10_CTRL,
 118                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
 119        },
 120        {
 121                .name           = "SMPS10_OUT1",
 122                .sname          = "smps10-out2",
 123                .ctrl_addr      = PALMAS_SMPS10_CTRL,
 124                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
 125        },
 126        {
 127                .name           = "LDO1",
 128                .sname          = "ldo1-in",
 129                .vsel_addr      = PALMAS_LDO1_VOLTAGE,
 130                .ctrl_addr      = PALMAS_LDO1_CTRL,
 131                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO1,
 132        },
 133        {
 134                .name           = "LDO2",
 135                .sname          = "ldo2-in",
 136                .vsel_addr      = PALMAS_LDO2_VOLTAGE,
 137                .ctrl_addr      = PALMAS_LDO2_CTRL,
 138                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO2,
 139        },
 140        {
 141                .name           = "LDO3",
 142                .sname          = "ldo3-in",
 143                .vsel_addr      = PALMAS_LDO3_VOLTAGE,
 144                .ctrl_addr      = PALMAS_LDO3_CTRL,
 145                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO3,
 146        },
 147        {
 148                .name           = "LDO4",
 149                .sname          = "ldo4-in",
 150                .vsel_addr      = PALMAS_LDO4_VOLTAGE,
 151                .ctrl_addr      = PALMAS_LDO4_CTRL,
 152                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO4,
 153        },
 154        {
 155                .name           = "LDO5",
 156                .sname          = "ldo5-in",
 157                .vsel_addr      = PALMAS_LDO5_VOLTAGE,
 158                .ctrl_addr      = PALMAS_LDO5_CTRL,
 159                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO5,
 160        },
 161        {
 162                .name           = "LDO6",
 163                .sname          = "ldo6-in",
 164                .vsel_addr      = PALMAS_LDO6_VOLTAGE,
 165                .ctrl_addr      = PALMAS_LDO6_CTRL,
 166                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO6,
 167        },
 168        {
 169                .name           = "LDO7",
 170                .sname          = "ldo7-in",
 171                .vsel_addr      = PALMAS_LDO7_VOLTAGE,
 172                .ctrl_addr      = PALMAS_LDO7_CTRL,
 173                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO7,
 174        },
 175        {
 176                .name           = "LDO8",
 177                .sname          = "ldo8-in",
 178                .vsel_addr      = PALMAS_LDO8_VOLTAGE,
 179                .ctrl_addr      = PALMAS_LDO8_CTRL,
 180                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO8,
 181        },
 182        {
 183                .name           = "LDO9",
 184                .sname          = "ldo9-in",
 185                .vsel_addr      = PALMAS_LDO9_VOLTAGE,
 186                .ctrl_addr      = PALMAS_LDO9_CTRL,
 187                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO9,
 188        },
 189        {
 190                .name           = "LDOLN",
 191                .sname          = "ldoln-in",
 192                .vsel_addr      = PALMAS_LDOLN_VOLTAGE,
 193                .ctrl_addr      = PALMAS_LDOLN_CTRL,
 194                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDOLN,
 195        },
 196        {
 197                .name           = "LDOUSB",
 198                .sname          = "ldousb-in",
 199                .vsel_addr      = PALMAS_LDOUSB_VOLTAGE,
 200                .ctrl_addr      = PALMAS_LDOUSB_CTRL,
 201                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDOUSB,
 202        },
 203        {
 204                .name           = "REGEN1",
 205                .ctrl_addr      = PALMAS_REGEN1_CTRL,
 206                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_REGEN1,
 207        },
 208        {
 209                .name           = "REGEN2",
 210                .ctrl_addr      = PALMAS_REGEN2_CTRL,
 211                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_REGEN2,
 212        },
 213        {
 214                .name           = "REGEN3",
 215                .ctrl_addr      = PALMAS_REGEN3_CTRL,
 216                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_REGEN3,
 217        },
 218        {
 219                .name           = "SYSEN1",
 220                .ctrl_addr      = PALMAS_SYSEN1_CTRL,
 221                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SYSEN1,
 222        },
 223        {
 224                .name           = "SYSEN2",
 225                .ctrl_addr      = PALMAS_SYSEN2_CTRL,
 226                .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SYSEN2,
 227        },
 228};
 229
 230static struct palmas_regs_info tps65917_regs_info[] = {
 231        {
 232                .name           = "SMPS1",
 233                .sname          = "smps1-in",
 234                .vsel_addr      = TPS65917_SMPS1_VOLTAGE,
 235                .ctrl_addr      = TPS65917_SMPS1_CTRL,
 236                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_SMPS1,
 237        },
 238        {
 239                .name           = "SMPS2",
 240                .sname          = "smps2-in",
 241                .vsel_addr      = TPS65917_SMPS2_VOLTAGE,
 242                .ctrl_addr      = TPS65917_SMPS2_CTRL,
 243                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_SMPS2,
 244        },
 245        {
 246                .name           = "SMPS3",
 247                .sname          = "smps3-in",
 248                .vsel_addr      = TPS65917_SMPS3_VOLTAGE,
 249                .ctrl_addr      = TPS65917_SMPS3_CTRL,
 250                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_SMPS3,
 251        },
 252        {
 253                .name           = "SMPS4",
 254                .sname          = "smps4-in",
 255                .vsel_addr      = TPS65917_SMPS4_VOLTAGE,
 256                .ctrl_addr      = TPS65917_SMPS4_CTRL,
 257                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_SMPS4,
 258        },
 259        {
 260                .name           = "SMPS5",
 261                .sname          = "smps5-in",
 262                .vsel_addr      = TPS65917_SMPS5_VOLTAGE,
 263                .ctrl_addr      = TPS65917_SMPS5_CTRL,
 264                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_SMPS5,
 265        },
 266        {
 267                .name           = "SMPS12",
 268                .sname          = "smps1-in",
 269                .vsel_addr      = TPS65917_SMPS1_VOLTAGE,
 270                .ctrl_addr      = TPS65917_SMPS1_CTRL,
 271                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_SMPS12,
 272        },
 273        {
 274                .name           = "LDO1",
 275                .sname          = "ldo1-in",
 276                .vsel_addr      = TPS65917_LDO1_VOLTAGE,
 277                .ctrl_addr      = TPS65917_LDO1_CTRL,
 278                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_LDO1,
 279        },
 280        {
 281                .name           = "LDO2",
 282                .sname          = "ldo2-in",
 283                .vsel_addr      = TPS65917_LDO2_VOLTAGE,
 284                .ctrl_addr      = TPS65917_LDO2_CTRL,
 285                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_LDO2,
 286        },
 287        {
 288                .name           = "LDO3",
 289                .sname          = "ldo3-in",
 290                .vsel_addr      = TPS65917_LDO3_VOLTAGE,
 291                .ctrl_addr      = TPS65917_LDO3_CTRL,
 292                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_LDO3,
 293        },
 294        {
 295                .name           = "LDO4",
 296                .sname          = "ldo4-in",
 297                .vsel_addr      = TPS65917_LDO4_VOLTAGE,
 298                .ctrl_addr      = TPS65917_LDO4_CTRL,
 299                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_LDO4,
 300        },
 301        {
 302                .name           = "LDO5",
 303                .sname          = "ldo5-in",
 304                .vsel_addr      = TPS65917_LDO5_VOLTAGE,
 305                .ctrl_addr      = TPS65917_LDO5_CTRL,
 306                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_LDO5,
 307        },
 308        {
 309                .name           = "REGEN1",
 310                .ctrl_addr      = TPS65917_REGEN1_CTRL,
 311                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_REGEN1,
 312        },
 313        {
 314                .name           = "REGEN2",
 315                .ctrl_addr      = TPS65917_REGEN2_CTRL,
 316                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_REGEN2,
 317        },
 318        {
 319                .name           = "REGEN3",
 320                .ctrl_addr      = TPS65917_REGEN3_CTRL,
 321                .sleep_id       = TPS65917_EXTERNAL_REQSTR_ID_REGEN3,
 322        },
 323};
 324
 325#define EXTERNAL_REQUESTOR(_id, _offset, _pos)          \
 326        [PALMAS_EXTERNAL_REQSTR_ID_##_id] = {           \
 327                .id = PALMAS_EXTERNAL_REQSTR_ID_##_id,  \
 328                .reg_offset = _offset,                  \
 329                .bit_pos = _pos,                        \
 330        }
 331
 332static struct palmas_sleep_requestor_info palma_sleep_req_info[] = {
 333        EXTERNAL_REQUESTOR(REGEN1, 0, 0),
 334        EXTERNAL_REQUESTOR(REGEN2, 0, 1),
 335        EXTERNAL_REQUESTOR(SYSEN1, 0, 2),
 336        EXTERNAL_REQUESTOR(SYSEN2, 0, 3),
 337        EXTERNAL_REQUESTOR(CLK32KG, 0, 4),
 338        EXTERNAL_REQUESTOR(CLK32KGAUDIO, 0, 5),
 339        EXTERNAL_REQUESTOR(REGEN3, 0, 6),
 340        EXTERNAL_REQUESTOR(SMPS12, 1, 0),
 341        EXTERNAL_REQUESTOR(SMPS3, 1, 1),
 342        EXTERNAL_REQUESTOR(SMPS45, 1, 2),
 343        EXTERNAL_REQUESTOR(SMPS6, 1, 3),
 344        EXTERNAL_REQUESTOR(SMPS7, 1, 4),
 345        EXTERNAL_REQUESTOR(SMPS8, 1, 5),
 346        EXTERNAL_REQUESTOR(SMPS9, 1, 6),
 347        EXTERNAL_REQUESTOR(SMPS10, 1, 7),
 348        EXTERNAL_REQUESTOR(LDO1, 2, 0),
 349        EXTERNAL_REQUESTOR(LDO2, 2, 1),
 350        EXTERNAL_REQUESTOR(LDO3, 2, 2),
 351        EXTERNAL_REQUESTOR(LDO4, 2, 3),
 352        EXTERNAL_REQUESTOR(LDO5, 2, 4),
 353        EXTERNAL_REQUESTOR(LDO6, 2, 5),
 354        EXTERNAL_REQUESTOR(LDO7, 2, 6),
 355        EXTERNAL_REQUESTOR(LDO8, 2, 7),
 356        EXTERNAL_REQUESTOR(LDO9, 3, 0),
 357        EXTERNAL_REQUESTOR(LDOLN, 3, 1),
 358        EXTERNAL_REQUESTOR(LDOUSB, 3, 2),
 359};
 360
 361#define EXTERNAL_REQUESTOR_TPS65917(_id, _offset, _pos)         \
 362        [TPS65917_EXTERNAL_REQSTR_ID_##_id] = {         \
 363                .id = TPS65917_EXTERNAL_REQSTR_ID_##_id,        \
 364                .reg_offset = _offset,                  \
 365                .bit_pos = _pos,                        \
 366        }
 367
 368static struct palmas_sleep_requestor_info tps65917_sleep_req_info[] = {
 369        EXTERNAL_REQUESTOR_TPS65917(REGEN1, 0, 0),
 370        EXTERNAL_REQUESTOR_TPS65917(REGEN2, 0, 1),
 371        EXTERNAL_REQUESTOR_TPS65917(REGEN3, 0, 6),
 372        EXTERNAL_REQUESTOR_TPS65917(SMPS1, 1, 0),
 373        EXTERNAL_REQUESTOR_TPS65917(SMPS2, 1, 1),
 374        EXTERNAL_REQUESTOR_TPS65917(SMPS3, 1, 2),
 375        EXTERNAL_REQUESTOR_TPS65917(SMPS4, 1, 3),
 376        EXTERNAL_REQUESTOR_TPS65917(SMPS5, 1, 4),
 377        EXTERNAL_REQUESTOR_TPS65917(SMPS12, 1, 5),
 378        EXTERNAL_REQUESTOR_TPS65917(LDO1, 2, 0),
 379        EXTERNAL_REQUESTOR_TPS65917(LDO2, 2, 1),
 380        EXTERNAL_REQUESTOR_TPS65917(LDO3, 2, 2),
 381        EXTERNAL_REQUESTOR_TPS65917(LDO4, 2, 3),
 382        EXTERNAL_REQUESTOR_TPS65917(LDO5, 2, 4),
 383};
 384
 385static unsigned int palmas_smps_ramp_delay[4] = {0, 10000, 5000, 2500};
 386
 387#define SMPS_CTRL_MODE_OFF              0x00
 388#define SMPS_CTRL_MODE_ON               0x01
 389#define SMPS_CTRL_MODE_ECO              0x02
 390#define SMPS_CTRL_MODE_PWM              0x03
 391
 392#define PALMAS_SMPS_NUM_VOLTAGES        122
 393#define PALMAS_SMPS10_NUM_VOLTAGES      2
 394#define PALMAS_LDO_NUM_VOLTAGES         50
 395
 396#define SMPS10_VSEL                     (1<<3)
 397#define SMPS10_BOOST_EN                 (1<<2)
 398#define SMPS10_BYPASS_EN                (1<<1)
 399#define SMPS10_SWITCH_EN                (1<<0)
 400
 401#define REGULATOR_SLAVE                 0
 402
 403static int palmas_smps_read(struct palmas *palmas, unsigned int reg,
 404                unsigned int *dest)
 405{
 406        unsigned int addr;
 407
 408        addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
 409
 410        return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
 411}
 412
 413static int palmas_smps_write(struct palmas *palmas, unsigned int reg,
 414                unsigned int value)
 415{
 416        unsigned int addr;
 417
 418        addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
 419
 420        return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
 421}
 422
 423static int palmas_ldo_read(struct palmas *palmas, unsigned int reg,
 424                unsigned int *dest)
 425{
 426        unsigned int addr;
 427
 428        addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
 429
 430        return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
 431}
 432
 433static int palmas_ldo_write(struct palmas *palmas, unsigned int reg,
 434                unsigned int value)
 435{
 436        unsigned int addr;
 437
 438        addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
 439
 440        return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
 441}
 442
 443static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
 444{
 445        int id = rdev_get_id(dev);
 446        struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 447        struct palmas_pmic_driver_data *ddata = pmic->palmas->pmic_ddata;
 448        struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
 449        unsigned int reg;
 450        bool rail_enable = true;
 451
 452        palmas_smps_read(pmic->palmas, rinfo->ctrl_addr, &reg);
 453
 454        reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 455
 456        if (reg == SMPS_CTRL_MODE_OFF)
 457                rail_enable = false;
 458
 459        switch (mode) {
 460        case REGULATOR_MODE_NORMAL:
 461                reg |= SMPS_CTRL_MODE_ON;
 462                break;
 463        case REGULATOR_MODE_IDLE:
 464                reg |= SMPS_CTRL_MODE_ECO;
 465                break;
 466        case REGULATOR_MODE_FAST:
 467                reg |= SMPS_CTRL_MODE_PWM;
 468                break;
 469        default:
 470                return -EINVAL;
 471        }
 472
 473        pmic->current_reg_mode[id] = reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 474        if (rail_enable)
 475                palmas_smps_write(pmic->palmas, rinfo->ctrl_addr, reg);
 476
 477        /* Switch the enable value to ensure this is used for enable */
 478        pmic->desc[id].enable_val = pmic->current_reg_mode[id];
 479
 480        return 0;
 481}
 482
 483static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
 484{
 485        struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 486        int id = rdev_get_id(dev);
 487        unsigned int reg;
 488
 489        reg = pmic->current_reg_mode[id] & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 490
 491        switch (reg) {
 492        case SMPS_CTRL_MODE_ON:
 493                return REGULATOR_MODE_NORMAL;
 494        case SMPS_CTRL_MODE_ECO:
 495                return REGULATOR_MODE_IDLE;
 496        case SMPS_CTRL_MODE_PWM:
 497                return REGULATOR_MODE_FAST;
 498        }
 499
 500        return 0;
 501}
 502
 503static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev,
 504                 int ramp_delay)
 505{
 506        int id = rdev_get_id(rdev);
 507        struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
 508        struct palmas_pmic_driver_data *ddata = pmic->palmas->pmic_ddata;
 509        struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
 510        unsigned int reg = 0;
 511        int ret;
 512
 513        /* SMPS3 and SMPS7 do not have tstep_addr setting */
 514        switch (id) {
 515        case PALMAS_REG_SMPS3:
 516        case PALMAS_REG_SMPS7:
 517                return 0;
 518        }
 519
 520        if (ramp_delay <= 0)
 521                reg = 0;
 522        else if (ramp_delay <= 2500)
 523                reg = 3;
 524        else if (ramp_delay <= 5000)
 525                reg = 2;
 526        else
 527                reg = 1;
 528
 529        ret = palmas_smps_write(pmic->palmas, rinfo->tstep_addr, reg);
 530        if (ret < 0) {
 531                dev_err(pmic->palmas->dev, "TSTEP write failed: %d\n", ret);
 532                return ret;
 533        }
 534
 535        pmic->ramp_delay[id] = palmas_smps_ramp_delay[reg];
 536        return ret;
 537}
 538
 539static const struct regulator_ops palmas_ops_smps = {
 540        .is_enabled             = regulator_is_enabled_regmap,
 541        .enable                 = regulator_enable_regmap,
 542        .disable                = regulator_disable_regmap,
 543        .set_mode               = palmas_set_mode_smps,
 544        .get_mode               = palmas_get_mode_smps,
 545        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 546        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 547        .list_voltage           = regulator_list_voltage_linear_range,
 548        .map_voltage            = regulator_map_voltage_linear_range,
 549        .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 550        .set_ramp_delay         = palmas_smps_set_ramp_delay,
 551};
 552
 553static const struct regulator_ops palmas_ops_ext_control_smps = {
 554        .set_mode               = palmas_set_mode_smps,
 555        .get_mode               = palmas_get_mode_smps,
 556        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 557        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 558        .list_voltage           = regulator_list_voltage_linear_range,
 559        .map_voltage            = regulator_map_voltage_linear_range,
 560        .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 561        .set_ramp_delay         = palmas_smps_set_ramp_delay,
 562};
 563
 564static const struct regulator_ops palmas_ops_smps10 = {
 565        .is_enabled             = regulator_is_enabled_regmap,
 566        .enable                 = regulator_enable_regmap,
 567        .disable                = regulator_disable_regmap,
 568        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 569        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 570        .list_voltage           = regulator_list_voltage_linear,
 571        .map_voltage            = regulator_map_voltage_linear,
 572        .set_bypass             = regulator_set_bypass_regmap,
 573        .get_bypass             = regulator_get_bypass_regmap,
 574};
 575
 576static const struct regulator_ops tps65917_ops_smps = {
 577        .is_enabled             = regulator_is_enabled_regmap,
 578        .enable                 = regulator_enable_regmap,
 579        .disable                = regulator_disable_regmap,
 580        .set_mode               = palmas_set_mode_smps,
 581        .get_mode               = palmas_get_mode_smps,
 582        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 583        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 584        .list_voltage           = regulator_list_voltage_linear_range,
 585        .map_voltage            = regulator_map_voltage_linear_range,
 586        .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 587};
 588
 589static const struct regulator_ops tps65917_ops_ext_control_smps = {
 590        .set_mode               = palmas_set_mode_smps,
 591        .get_mode               = palmas_get_mode_smps,
 592        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 593        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 594        .list_voltage           = regulator_list_voltage_linear_range,
 595        .map_voltage            = regulator_map_voltage_linear_range,
 596};
 597
 598static int palmas_is_enabled_ldo(struct regulator_dev *dev)
 599{
 600        int id = rdev_get_id(dev);
 601        struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 602        struct palmas_pmic_driver_data *ddata = pmic->palmas->pmic_ddata;
 603        struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
 604        unsigned int reg;
 605
 606        palmas_ldo_read(pmic->palmas, rinfo->ctrl_addr, &reg);
 607
 608        reg &= PALMAS_LDO1_CTRL_STATUS;
 609
 610        return !!(reg);
 611}
 612
 613static const struct regulator_ops palmas_ops_ldo = {
 614        .is_enabled             = palmas_is_enabled_ldo,
 615        .enable                 = regulator_enable_regmap,
 616        .disable                = regulator_disable_regmap,
 617        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 618        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 619        .list_voltage           = regulator_list_voltage_linear,
 620        .map_voltage            = regulator_map_voltage_linear,
 621};
 622
 623static const struct regulator_ops palmas_ops_ldo9 = {
 624        .is_enabled             = palmas_is_enabled_ldo,
 625        .enable                 = regulator_enable_regmap,
 626        .disable                = regulator_disable_regmap,
 627        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 628        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 629        .list_voltage           = regulator_list_voltage_linear,
 630        .map_voltage            = regulator_map_voltage_linear,
 631        .set_bypass             = regulator_set_bypass_regmap,
 632        .get_bypass             = regulator_get_bypass_regmap,
 633};
 634
 635static const struct regulator_ops palmas_ops_ext_control_ldo = {
 636        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 637        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 638        .list_voltage           = regulator_list_voltage_linear,
 639        .map_voltage            = regulator_map_voltage_linear,
 640};
 641
 642static const struct regulator_ops palmas_ops_extreg = {
 643        .is_enabled             = regulator_is_enabled_regmap,
 644        .enable                 = regulator_enable_regmap,
 645        .disable                = regulator_disable_regmap,
 646};
 647
 648static const struct regulator_ops palmas_ops_ext_control_extreg = {
 649};
 650
 651static const struct regulator_ops tps65917_ops_ldo = {
 652        .is_enabled             = palmas_is_enabled_ldo,
 653        .enable                 = regulator_enable_regmap,
 654        .disable                = regulator_disable_regmap,
 655        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 656        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 657        .list_voltage           = regulator_list_voltage_linear,
 658        .map_voltage            = regulator_map_voltage_linear,
 659        .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 660};
 661
 662static const struct regulator_ops tps65917_ops_ldo_1_2 = {
 663        .is_enabled             = palmas_is_enabled_ldo,
 664        .enable                 = regulator_enable_regmap,
 665        .disable                = regulator_disable_regmap,
 666        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 667        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 668        .list_voltage           = regulator_list_voltage_linear,
 669        .map_voltage            = regulator_map_voltage_linear,
 670        .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 671        .set_bypass             = regulator_set_bypass_regmap,
 672        .get_bypass             = regulator_get_bypass_regmap,
 673};
 674
 675static int palmas_regulator_config_external(struct palmas *palmas, int id,
 676                struct palmas_reg_init *reg_init)
 677{
 678        struct palmas_pmic_driver_data *ddata = palmas->pmic_ddata;
 679        struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
 680        int ret;
 681
 682        ret = palmas_ext_control_req_config(palmas, rinfo->sleep_id,
 683                                            reg_init->roof_floor, true);
 684        if (ret < 0)
 685                dev_err(palmas->dev,
 686                        "Ext control config for regulator %d failed %d\n",
 687                        id, ret);
 688        return ret;
 689}
 690
 691/*
 692 * setup the hardware based sleep configuration of the SMPS/LDO regulators
 693 * from the platform data. This is different to the software based control
 694 * supported by the regulator framework as it is controlled by toggling
 695 * pins on the PMIC such as PREQ, SYSEN, ...
 696 */
 697static int palmas_smps_init(struct palmas *palmas, int id,
 698                struct palmas_reg_init *reg_init)
 699{
 700        unsigned int reg;
 701        int ret;
 702        struct palmas_pmic_driver_data *ddata = palmas->pmic_ddata;
 703        struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
 704        unsigned int addr = rinfo->ctrl_addr;
 705
 706        ret = palmas_smps_read(palmas, addr, &reg);
 707        if (ret)
 708                return ret;
 709
 710        switch (id) {
 711        case PALMAS_REG_SMPS10_OUT1:
 712        case PALMAS_REG_SMPS10_OUT2:
 713                reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
 714                if (reg_init->mode_sleep)
 715                        reg |= reg_init->mode_sleep <<
 716                                        PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
 717                break;
 718        default:
 719                if (reg_init->warm_reset)
 720                        reg |= PALMAS_SMPS12_CTRL_WR_S;
 721                else
 722                        reg &= ~PALMAS_SMPS12_CTRL_WR_S;
 723
 724                if (reg_init->roof_floor)
 725                        reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
 726                else
 727                        reg &= ~PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
 728
 729                reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
 730                if (reg_init->mode_sleep)
 731                        reg |= reg_init->mode_sleep <<
 732                                        PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
 733        }
 734
 735        ret = palmas_smps_write(palmas, addr, reg);
 736        if (ret)
 737                return ret;
 738
 739        if (rinfo->vsel_addr && reg_init->vsel) {
 740
 741                reg = reg_init->vsel;
 742
 743                ret = palmas_smps_write(palmas, rinfo->vsel_addr, reg);
 744                if (ret)
 745                        return ret;
 746        }
 747
 748        if (reg_init->roof_floor && (id != PALMAS_REG_SMPS10_OUT1) &&
 749                        (id != PALMAS_REG_SMPS10_OUT2)) {
 750                /* Enable externally controlled regulator */
 751                ret = palmas_smps_read(palmas, addr, &reg);
 752                if (ret < 0)
 753                        return ret;
 754
 755                if (!(reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK)) {
 756                        reg |= SMPS_CTRL_MODE_ON;
 757                        ret = palmas_smps_write(palmas, addr, reg);
 758                        if (ret < 0)
 759                                return ret;
 760                }
 761                return palmas_regulator_config_external(palmas, id, reg_init);
 762        }
 763        return 0;
 764}
 765
 766static int palmas_ldo_init(struct palmas *palmas, int id,
 767                struct palmas_reg_init *reg_init)
 768{
 769        unsigned int reg;
 770        unsigned int addr;
 771        int ret;
 772        struct palmas_pmic_driver_data *ddata = palmas->pmic_ddata;
 773        struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
 774
 775        addr = rinfo->ctrl_addr;
 776
 777        ret = palmas_ldo_read(palmas, addr, &reg);
 778        if (ret)
 779                return ret;
 780
 781        if (reg_init->warm_reset)
 782                reg |= PALMAS_LDO1_CTRL_WR_S;
 783        else
 784                reg &= ~PALMAS_LDO1_CTRL_WR_S;
 785
 786        if (reg_init->mode_sleep)
 787                reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
 788        else
 789                reg &= ~PALMAS_LDO1_CTRL_MODE_SLEEP;
 790
 791        ret = palmas_ldo_write(palmas, addr, reg);
 792        if (ret)
 793                return ret;
 794
 795        if (reg_init->roof_floor) {
 796                /* Enable externally controlled regulator */
 797                ret = palmas_update_bits(palmas, PALMAS_LDO_BASE,
 798                                addr, PALMAS_LDO1_CTRL_MODE_ACTIVE,
 799                                PALMAS_LDO1_CTRL_MODE_ACTIVE);
 800                if (ret < 0) {
 801                        dev_err(palmas->dev,
 802                                "LDO Register 0x%02x update failed %d\n",
 803                                addr, ret);
 804                        return ret;
 805                }
 806                return palmas_regulator_config_external(palmas, id, reg_init);
 807        }
 808        return 0;
 809}
 810
 811static int palmas_extreg_init(struct palmas *palmas, int id,
 812                struct palmas_reg_init *reg_init)
 813{
 814        unsigned int addr;
 815        int ret;
 816        unsigned int val = 0;
 817        struct palmas_pmic_driver_data *ddata = palmas->pmic_ddata;
 818        struct palmas_regs_info *rinfo = &ddata->palmas_regs_info[id];
 819
 820        addr = rinfo->ctrl_addr;
 821
 822        if (reg_init->mode_sleep)
 823                val = PALMAS_REGEN1_CTRL_MODE_SLEEP;
 824
 825        ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
 826                        addr, PALMAS_REGEN1_CTRL_MODE_SLEEP, val);
 827        if (ret < 0) {
 828                dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n",
 829                        addr, ret);
 830                return ret;
 831        }
 832
 833        if (reg_init->roof_floor) {
 834                /* Enable externally controlled regulator */
 835                ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
 836                                addr, PALMAS_REGEN1_CTRL_MODE_ACTIVE,
 837                                PALMAS_REGEN1_CTRL_MODE_ACTIVE);
 838                if (ret < 0) {
 839                        dev_err(palmas->dev,
 840                                "Resource Register 0x%02x update failed %d\n",
 841                                addr, ret);
 842                        return ret;
 843                }
 844                return palmas_regulator_config_external(palmas, id, reg_init);
 845        }
 846        return 0;
 847}
 848
 849static void palmas_enable_ldo8_track(struct palmas *palmas)
 850{
 851        unsigned int reg;
 852        unsigned int addr;
 853        int ret;
 854        struct palmas_pmic_driver_data *ddata = palmas->pmic_ddata;
 855        struct palmas_regs_info *rinfo;
 856
 857        rinfo = &ddata->palmas_regs_info[PALMAS_REG_LDO8];
 858        addr = rinfo->ctrl_addr;
 859
 860        ret = palmas_ldo_read(palmas, addr, &reg);
 861        if (ret) {
 862                dev_err(palmas->dev, "Error in reading ldo8 control reg\n");
 863                return;
 864        }
 865
 866        reg |= PALMAS_LDO8_CTRL_LDO_TRACKING_EN;
 867        ret = palmas_ldo_write(palmas, addr, reg);
 868        if (ret < 0) {
 869                dev_err(palmas->dev, "Error in enabling tracking mode\n");
 870                return;
 871        }
 872        /*
 873         * When SMPS45 is set to off and LDO8 tracking is enabled, the LDO8
 874         * output is defined by the LDO8_VOLTAGE.VSEL register divided by two,
 875         * and can be set from 0.45 to 1.65 V.
 876         */
 877        addr = rinfo->vsel_addr;
 878        ret = palmas_ldo_read(palmas, addr, &reg);
 879        if (ret) {
 880                dev_err(palmas->dev, "Error in reading ldo8 voltage reg\n");
 881                return;
 882        }
 883
 884        reg = (reg << 1) & PALMAS_LDO8_VOLTAGE_VSEL_MASK;
 885        ret = palmas_ldo_write(palmas, addr, reg);
 886        if (ret < 0)
 887                dev_err(palmas->dev, "Error in setting ldo8 voltage reg\n");
 888
 889        return;
 890}
 891
 892static int palmas_ldo_registration(struct palmas_pmic *pmic,
 893                                   struct palmas_pmic_driver_data *ddata,
 894                                   struct palmas_pmic_platform_data *pdata,
 895                                   const char *pdev_name,
 896                                   struct regulator_config config)
 897{
 898        int id, ret;
 899        struct regulator_dev *rdev;
 900        struct palmas_reg_init *reg_init;
 901        struct palmas_regs_info *rinfo;
 902        struct regulator_desc *desc;
 903
 904        for (id = ddata->ldo_begin; id < ddata->max_reg; id++) {
 905                if (pdata && pdata->reg_init[id])
 906                        reg_init = pdata->reg_init[id];
 907                else
 908                        reg_init = NULL;
 909
 910                rinfo = &ddata->palmas_regs_info[id];
 911                /* Miss out regulators which are not available due
 912                 * to alternate functions.
 913                 */
 914
 915                /* Register the regulators */
 916                desc = &pmic->desc[id];
 917                desc->name = rinfo->name;
 918                desc->id = id;
 919                desc->type = REGULATOR_VOLTAGE;
 920                desc->owner = THIS_MODULE;
 921
 922                if (id < PALMAS_REG_REGEN1) {
 923                        desc->n_voltages = PALMAS_LDO_NUM_VOLTAGES;
 924                        if (reg_init && reg_init->roof_floor)
 925                                desc->ops = &palmas_ops_ext_control_ldo;
 926                        else
 927                                desc->ops = &palmas_ops_ldo;
 928                        desc->min_uV = 900000;
 929                        desc->uV_step = 50000;
 930                        desc->linear_min_sel = 1;
 931                        desc->enable_time = 500;
 932                        desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
 933                                                            rinfo->vsel_addr);
 934                        desc->vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK;
 935                        desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
 936                                                              rinfo->ctrl_addr);
 937                        desc->enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
 938
 939                        /* Check if LDO8 is in tracking mode or not */
 940                        if (pdata && (id == PALMAS_REG_LDO8) &&
 941                            pdata->enable_ldo8_tracking) {
 942                                palmas_enable_ldo8_track(pmic->palmas);
 943                                desc->min_uV = 450000;
 944                                desc->uV_step = 25000;
 945                        }
 946
 947                        /* LOD6 in vibrator mode will have enable time 2000us */
 948                        if (pdata && pdata->ldo6_vibrator &&
 949                            (id == PALMAS_REG_LDO6))
 950                                desc->enable_time = 2000;
 951
 952                        if (id == PALMAS_REG_LDO9) {
 953                                desc->ops = &palmas_ops_ldo9;
 954                                desc->bypass_reg = desc->enable_reg;
 955                                desc->bypass_val_on =
 956                                                PALMAS_LDO9_CTRL_LDO_BYPASS_EN;
 957                                desc->bypass_mask =
 958                                                PALMAS_LDO9_CTRL_LDO_BYPASS_EN;
 959                        }
 960                } else {
 961                        if (!ddata->has_regen3 && id == PALMAS_REG_REGEN3)
 962                                continue;
 963
 964                        desc->n_voltages = 1;
 965                        if (reg_init && reg_init->roof_floor)
 966                                desc->ops = &palmas_ops_ext_control_extreg;
 967                        else
 968                                desc->ops = &palmas_ops_extreg;
 969                        desc->enable_reg =
 970                                        PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
 971                                                           rinfo->ctrl_addr);
 972                        desc->enable_mask = PALMAS_REGEN1_CTRL_MODE_ACTIVE;
 973                }
 974
 975                if (pdata)
 976                        config.init_data = pdata->reg_data[id];
 977                else
 978                        config.init_data = NULL;
 979
 980                desc->supply_name = rinfo->sname;
 981                config.of_node = ddata->palmas_matches[id].of_node;
 982
 983                rdev = devm_regulator_register(pmic->dev, desc, &config);
 984                if (IS_ERR(rdev)) {
 985                        dev_err(pmic->dev,
 986                                "failed to register %s regulator\n",
 987                                pdev_name);
 988                        return PTR_ERR(rdev);
 989                }
 990
 991                /* Save regulator for cleanup */
 992                pmic->rdev[id] = rdev;
 993
 994                /* Initialise sleep/init values from platform data */
 995                if (pdata) {
 996                        reg_init = pdata->reg_init[id];
 997                        if (reg_init) {
 998                                if (id <= ddata->ldo_end)
 999                                        ret = palmas_ldo_init(pmic->palmas, id,
1000                                                              reg_init);
1001                                else
1002                                        ret = palmas_extreg_init(pmic->palmas,
1003                                                                 id, reg_init);
1004                                if (ret)
1005                                        return ret;
1006                        }
1007                }
1008        }
1009
1010        return 0;
1011}
1012
1013static int tps65917_ldo_registration(struct palmas_pmic *pmic,
1014                                     struct palmas_pmic_driver_data *ddata,
1015                                     struct palmas_pmic_platform_data *pdata,
1016                                     const char *pdev_name,
1017                                     struct regulator_config config)
1018{
1019        int id, ret;
1020        struct regulator_dev *rdev;
1021        struct palmas_reg_init *reg_init;
1022        struct palmas_regs_info *rinfo;
1023        struct regulator_desc *desc;
1024
1025        for (id = ddata->ldo_begin; id < ddata->max_reg; id++) {
1026                if (pdata && pdata->reg_init[id])
1027                        reg_init = pdata->reg_init[id];
1028                else
1029                        reg_init = NULL;
1030
1031                /* Miss out regulators which are not available due
1032                 * to alternate functions.
1033                 */
1034                rinfo = &ddata->palmas_regs_info[id];
1035
1036                /* Register the regulators */
1037                desc = &pmic->desc[id];
1038                desc->name = rinfo->name;
1039                desc->id = id;
1040                desc->type = REGULATOR_VOLTAGE;
1041                desc->owner = THIS_MODULE;
1042
1043                if (id < TPS65917_REG_REGEN1) {
1044                        desc->n_voltages = PALMAS_LDO_NUM_VOLTAGES;
1045                        if (reg_init && reg_init->roof_floor)
1046                                desc->ops = &palmas_ops_ext_control_ldo;
1047                        else
1048                                desc->ops = &tps65917_ops_ldo;
1049                        desc->min_uV = 900000;
1050                        desc->uV_step = 50000;
1051                        desc->linear_min_sel = 1;
1052                        desc->enable_time = 500;
1053                        desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1054                                                            rinfo->vsel_addr);
1055                        desc->vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK;
1056                        desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1057                                                              rinfo->ctrl_addr);
1058                        desc->enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
1059                        /*
1060                         * To be confirmed. Discussion on going with PMIC Team.
1061                         * It is of the order of ~60mV/uS.
1062                         */
1063                        desc->ramp_delay = 2500;
1064                        if (id == TPS65917_REG_LDO1 ||
1065                            id == TPS65917_REG_LDO2) {
1066                                desc->ops = &tps65917_ops_ldo_1_2;
1067                                desc->bypass_reg = desc->enable_reg;
1068                                desc->bypass_val_on =
1069                                                TPS65917_LDO1_CTRL_BYPASS_EN;
1070                                desc->bypass_mask =
1071                                                TPS65917_LDO1_CTRL_BYPASS_EN;
1072                        }
1073                } else {
1074                        desc->n_voltages = 1;
1075                        if (reg_init && reg_init->roof_floor)
1076                                desc->ops = &palmas_ops_ext_control_extreg;
1077                        else
1078                                desc->ops = &palmas_ops_extreg;
1079                        desc->enable_reg =
1080                                        PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
1081                                                           rinfo->ctrl_addr);
1082                        desc->enable_mask = PALMAS_REGEN1_CTRL_MODE_ACTIVE;
1083                }
1084
1085                if (pdata)
1086                        config.init_data = pdata->reg_data[id];
1087                else
1088                        config.init_data = NULL;
1089
1090                desc->supply_name = rinfo->sname;
1091                config.of_node = ddata->palmas_matches[id].of_node;
1092
1093                rdev = devm_regulator_register(pmic->dev, desc, &config);
1094                if (IS_ERR(rdev)) {
1095                        dev_err(pmic->dev,
1096                                "failed to register %s regulator\n",
1097                                pdev_name);
1098                        return PTR_ERR(rdev);
1099                }
1100
1101                /* Save regulator for cleanup */
1102                pmic->rdev[id] = rdev;
1103
1104                /* Initialise sleep/init values from platform data */
1105                if (pdata) {
1106                        reg_init = pdata->reg_init[id];
1107                        if (reg_init) {
1108                                if (id < TPS65917_REG_REGEN1)
1109                                        ret = palmas_ldo_init(pmic->palmas,
1110                                                              id, reg_init);
1111                                else
1112                                        ret = palmas_extreg_init(pmic->palmas,
1113                                                                 id, reg_init);
1114                                if (ret)
1115                                        return ret;
1116                        }
1117                }
1118        }
1119
1120        return 0;
1121}
1122
1123static int palmas_smps_registration(struct palmas_pmic *pmic,
1124                                    struct palmas_pmic_driver_data *ddata,
1125                                    struct palmas_pmic_platform_data *pdata,
1126                                    const char *pdev_name,
1127                                    struct regulator_config config)
1128{
1129        int id, ret;
1130        unsigned int addr, reg;
1131        struct regulator_dev *rdev;
1132        struct palmas_reg_init *reg_init;
1133        struct palmas_regs_info *rinfo;
1134        struct regulator_desc *desc;
1135
1136        for (id = ddata->smps_start; id <= ddata->smps_end; id++) {
1137                bool ramp_delay_support = false;
1138
1139                /*
1140                 * Miss out regulators which are not available due
1141                 * to slaving configurations.
1142                 */
1143                switch (id) {
1144                case PALMAS_REG_SMPS12:
1145                case PALMAS_REG_SMPS3:
1146                        if (pmic->smps123)
1147                                continue;
1148                        if (id == PALMAS_REG_SMPS12)
1149                                ramp_delay_support = true;
1150                        break;
1151                case PALMAS_REG_SMPS123:
1152                        if (!pmic->smps123)
1153                                continue;
1154                        ramp_delay_support = true;
1155                        break;
1156                case PALMAS_REG_SMPS45:
1157                case PALMAS_REG_SMPS7:
1158                        if (pmic->smps457)
1159                                continue;
1160                        if (id == PALMAS_REG_SMPS45)
1161                                ramp_delay_support = true;
1162                        break;
1163                case PALMAS_REG_SMPS457:
1164                        if (!pmic->smps457)
1165                                continue;
1166                        ramp_delay_support = true;
1167                        break;
1168                case PALMAS_REG_SMPS10_OUT1:
1169                case PALMAS_REG_SMPS10_OUT2:
1170                        if (!PALMAS_PMIC_HAS(pmic->palmas, SMPS10_BOOST))
1171                                continue;
1172                }
1173                rinfo = &ddata->palmas_regs_info[id];
1174                desc = &pmic->desc[id];
1175
1176                if ((id == PALMAS_REG_SMPS6) || (id == PALMAS_REG_SMPS8))
1177                        ramp_delay_support = true;
1178
1179                if (ramp_delay_support) {
1180                        addr = rinfo->tstep_addr;
1181                        ret = palmas_smps_read(pmic->palmas, addr, &reg);
1182                        if (ret < 0) {
1183                                dev_err(pmic->dev,
1184                                        "reading TSTEP reg failed: %d\n", ret);
1185                                return ret;
1186                        }
1187                        desc->ramp_delay = palmas_smps_ramp_delay[reg & 0x3];
1188                        pmic->ramp_delay[id] = desc->ramp_delay;
1189                }
1190
1191                /* Initialise sleep/init values from platform data */
1192                if (pdata && pdata->reg_init[id]) {
1193                        reg_init = pdata->reg_init[id];
1194                        ret = palmas_smps_init(pmic->palmas, id, reg_init);
1195                        if (ret)
1196                                return ret;
1197                } else {
1198                        reg_init = NULL;
1199                }
1200
1201                /* Register the regulators */
1202                desc->name = rinfo->name;
1203                desc->id = id;
1204
1205                switch (id) {
1206                case PALMAS_REG_SMPS10_OUT1:
1207                case PALMAS_REG_SMPS10_OUT2:
1208                        desc->n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
1209                        desc->ops = &palmas_ops_smps10;
1210                        desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1211                                                            PALMAS_SMPS10_CTRL);
1212                        desc->vsel_mask = SMPS10_VSEL;
1213                        desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1214                                                            PALMAS_SMPS10_CTRL);
1215                        if (id == PALMAS_REG_SMPS10_OUT1)
1216                                desc->enable_mask = SMPS10_SWITCH_EN;
1217                        else
1218                                desc->enable_mask = SMPS10_BOOST_EN;
1219                        desc->bypass_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1220                                                            PALMAS_SMPS10_CTRL);
1221                        desc->bypass_val_on = SMPS10_BYPASS_EN;
1222                        desc->bypass_mask = SMPS10_BYPASS_EN;
1223                        desc->min_uV = 3750000;
1224                        desc->uV_step = 1250000;
1225                        break;
1226                default:
1227                        /*
1228                         * Read and store the RANGE bit for later use
1229                         * This must be done before regulator is probed,
1230                         * otherwise we error in probe with unsupportable
1231                         * ranges. Read the current smps mode for later use.
1232                         */
1233                        addr = rinfo->vsel_addr;
1234                        desc->n_linear_ranges = 3;
1235
1236                        ret = palmas_smps_read(pmic->palmas, addr, &reg);
1237                        if (ret)
1238                                return ret;
1239                        if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
1240                                pmic->range[id] = 1;
1241                        if (pmic->range[id])
1242                                desc->linear_ranges = smps_high_ranges;
1243                        else
1244                                desc->linear_ranges = smps_low_ranges;
1245
1246                        if (reg_init && reg_init->roof_floor)
1247                                desc->ops = &palmas_ops_ext_control_smps;
1248                        else
1249                                desc->ops = &palmas_ops_smps;
1250                        desc->n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
1251                        desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1252                                                            rinfo->vsel_addr);
1253                        desc->vsel_mask = PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
1254
1255                        /* Read the smps mode for later use. */
1256                        addr = rinfo->ctrl_addr;
1257                        ret = palmas_smps_read(pmic->palmas, addr, &reg);
1258                        if (ret)
1259                                return ret;
1260                        pmic->current_reg_mode[id] = reg &
1261                                        PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
1262
1263                        desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1264                                                              rinfo->ctrl_addr);
1265                        desc->enable_mask = PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
1266                        /* set_mode overrides this value */
1267                        desc->enable_val = SMPS_CTRL_MODE_ON;
1268                }
1269
1270                desc->type = REGULATOR_VOLTAGE;
1271                desc->owner = THIS_MODULE;
1272
1273                if (pdata)
1274                        config.init_data = pdata->reg_data[id];
1275                else
1276                        config.init_data = NULL;
1277
1278                desc->supply_name = rinfo->sname;
1279                config.of_node = ddata->palmas_matches[id].of_node;
1280
1281                rdev = devm_regulator_register(pmic->dev, desc, &config);
1282                if (IS_ERR(rdev)) {
1283                        dev_err(pmic->dev,
1284                                "failed to register %s regulator\n",
1285                                pdev_name);
1286                        return PTR_ERR(rdev);
1287                }
1288
1289                /* Save regulator for cleanup */
1290                pmic->rdev[id] = rdev;
1291        }
1292
1293        return 0;
1294}
1295
1296static int tps65917_smps_registration(struct palmas_pmic *pmic,
1297                                      struct palmas_pmic_driver_data *ddata,
1298                                      struct palmas_pmic_platform_data *pdata,
1299                                      const char *pdev_name,
1300                                      struct regulator_config config)
1301{
1302        int id, ret;
1303        unsigned int addr, reg;
1304        struct regulator_dev *rdev;
1305        struct palmas_reg_init *reg_init;
1306        struct palmas_regs_info *rinfo;
1307        struct regulator_desc *desc;
1308
1309        for (id = ddata->smps_start; id <= ddata->smps_end; id++) {
1310                /*
1311                 * Miss out regulators which are not available due
1312                 * to slaving configurations.
1313                 */
1314                desc = &pmic->desc[id];
1315                desc->n_linear_ranges = 3;
1316                if ((id == TPS65917_REG_SMPS2 || id == TPS65917_REG_SMPS1) &&
1317                    pmic->smps12)
1318                        continue;
1319
1320                /* Initialise sleep/init values from platform data */
1321                if (pdata && pdata->reg_init[id]) {
1322                        reg_init = pdata->reg_init[id];
1323                        ret = palmas_smps_init(pmic->palmas, id, reg_init);
1324                        if (ret)
1325                                return ret;
1326                } else {
1327                        reg_init = NULL;
1328                }
1329                rinfo = &ddata->palmas_regs_info[id];
1330
1331                /* Register the regulators */
1332                desc->name = rinfo->name;
1333                desc->id = id;
1334
1335                /*
1336                 * Read and store the RANGE bit for later use
1337                 * This must be done before regulator is probed,
1338                 * otherwise we error in probe with unsupportable
1339                 * ranges. Read the current smps mode for later use.
1340                 */
1341                addr = rinfo->vsel_addr;
1342
1343                ret = palmas_smps_read(pmic->palmas, addr, &reg);
1344                if (ret)
1345                        return ret;
1346                if (reg & TPS65917_SMPS1_VOLTAGE_RANGE)
1347                        pmic->range[id] = 1;
1348
1349                if (pmic->range[id])
1350                        desc->linear_ranges = smps_high_ranges;
1351                else
1352                        desc->linear_ranges = smps_low_ranges;
1353
1354                if (reg_init && reg_init->roof_floor)
1355                        desc->ops = &tps65917_ops_ext_control_smps;
1356                else
1357                        desc->ops = &tps65917_ops_smps;
1358                desc->n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
1359                desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1360                                                    rinfo->vsel_addr);
1361                desc->vsel_mask = PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
1362                desc->ramp_delay = 2500;
1363
1364                /* Read the smps mode for later use. */
1365                addr = rinfo->ctrl_addr;
1366                ret = palmas_smps_read(pmic->palmas, addr, &reg);
1367                if (ret)
1368                        return ret;
1369                pmic->current_reg_mode[id] = reg &
1370                                PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
1371                desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1372                                                      rinfo->ctrl_addr);
1373                desc->enable_mask = PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
1374                /* set_mode overrides this value */
1375                desc->enable_val = SMPS_CTRL_MODE_ON;
1376
1377                desc->type = REGULATOR_VOLTAGE;
1378                desc->owner = THIS_MODULE;
1379
1380                if (pdata)
1381                        config.init_data = pdata->reg_data[id];
1382                else
1383                        config.init_data = NULL;
1384
1385                desc->supply_name = rinfo->sname;
1386                config.of_node = ddata->palmas_matches[id].of_node;
1387
1388                rdev = devm_regulator_register(pmic->dev, desc, &config);
1389                if (IS_ERR(rdev)) {
1390                        dev_err(pmic->dev,
1391                                "failed to register %s regulator\n",
1392                                pdev_name);
1393                        return PTR_ERR(rdev);
1394                }
1395
1396                /* Save regulator for cleanup */
1397                pmic->rdev[id] = rdev;
1398        }
1399
1400        return 0;
1401}
1402
1403static struct of_regulator_match palmas_matches[] = {
1404        { .name = "smps12", },
1405        { .name = "smps123", },
1406        { .name = "smps3", },
1407        { .name = "smps45", },
1408        { .name = "smps457", },
1409        { .name = "smps6", },
1410        { .name = "smps7", },
1411        { .name = "smps8", },
1412        { .name = "smps9", },
1413        { .name = "smps10_out2", },
1414        { .name = "smps10_out1", },
1415        { .name = "ldo1", },
1416        { .name = "ldo2", },
1417        { .name = "ldo3", },
1418        { .name = "ldo4", },
1419        { .name = "ldo5", },
1420        { .name = "ldo6", },
1421        { .name = "ldo7", },
1422        { .name = "ldo8", },
1423        { .name = "ldo9", },
1424        { .name = "ldoln", },
1425        { .name = "ldousb", },
1426        { .name = "regen1", },
1427        { .name = "regen2", },
1428        { .name = "regen3", },
1429        { .name = "sysen1", },
1430        { .name = "sysen2", },
1431};
1432
1433static struct of_regulator_match tps65917_matches[] = {
1434        { .name = "smps1", },
1435        { .name = "smps2", },
1436        { .name = "smps3", },
1437        { .name = "smps4", },
1438        { .name = "smps5", },
1439        { .name = "smps12",},
1440        { .name = "ldo1", },
1441        { .name = "ldo2", },
1442        { .name = "ldo3", },
1443        { .name = "ldo4", },
1444        { .name = "ldo5", },
1445        { .name = "regen1", },
1446        { .name = "regen2", },
1447        { .name = "regen3", },
1448        { .name = "sysen1", },
1449        { .name = "sysen2", },
1450};
1451
1452static struct palmas_pmic_driver_data palmas_ddata = {
1453        .smps_start = PALMAS_REG_SMPS12,
1454        .smps_end = PALMAS_REG_SMPS10_OUT1,
1455        .ldo_begin = PALMAS_REG_LDO1,
1456        .ldo_end = PALMAS_REG_LDOUSB,
1457        .max_reg = PALMAS_NUM_REGS,
1458        .has_regen3 = true,
1459        .palmas_regs_info = palmas_generic_regs_info,
1460        .palmas_matches = palmas_matches,
1461        .sleep_req_info = palma_sleep_req_info,
1462        .smps_register = palmas_smps_registration,
1463        .ldo_register = palmas_ldo_registration,
1464};
1465
1466static struct palmas_pmic_driver_data tps65917_ddata = {
1467        .smps_start = TPS65917_REG_SMPS1,
1468        .smps_end = TPS65917_REG_SMPS12,
1469        .ldo_begin = TPS65917_REG_LDO1,
1470        .ldo_end = TPS65917_REG_LDO5,
1471        .max_reg = TPS65917_NUM_REGS,
1472        .has_regen3 = true,
1473        .palmas_regs_info = tps65917_regs_info,
1474        .palmas_matches = tps65917_matches,
1475        .sleep_req_info = tps65917_sleep_req_info,
1476        .smps_register = tps65917_smps_registration,
1477        .ldo_register = tps65917_ldo_registration,
1478};
1479
1480static int palmas_dt_to_pdata(struct device *dev,
1481                              struct device_node *node,
1482                              struct palmas_pmic_platform_data *pdata,
1483                              struct palmas_pmic_driver_data *ddata)
1484{
1485        struct device_node *regulators;
1486        u32 prop;
1487        int idx, ret;
1488
1489        regulators = of_get_child_by_name(node, "regulators");
1490        if (!regulators) {
1491                dev_info(dev, "regulator node not found\n");
1492                return 0;
1493        }
1494
1495        ret = of_regulator_match(dev, regulators, ddata->palmas_matches,
1496                                 ddata->max_reg);
1497        of_node_put(regulators);
1498        if (ret < 0) {
1499                dev_err(dev, "Error parsing regulator init data: %d\n", ret);
1500                return 0;
1501        }
1502
1503        for (idx = 0; idx < ddata->max_reg; idx++) {
1504                struct of_regulator_match *match;
1505                struct palmas_reg_init *rinit;
1506                struct device_node *np;
1507
1508                match = &ddata->palmas_matches[idx];
1509                np = match->of_node;
1510
1511                if (!match->init_data || !np)
1512                        continue;
1513
1514                rinit = devm_kzalloc(dev, sizeof(*rinit), GFP_KERNEL);
1515                if (!rinit)
1516                        return -ENOMEM;
1517
1518                pdata->reg_data[idx] = match->init_data;
1519                pdata->reg_init[idx] = rinit;
1520
1521                rinit->warm_reset = of_property_read_bool(np, "ti,warm-reset");
1522                ret = of_property_read_u32(np, "ti,roof-floor", &prop);
1523                /* EINVAL: Property not found */
1524                if (ret != -EINVAL) {
1525                        int econtrol;
1526
1527                        /* use default value, when no value is specified */
1528                        econtrol = PALMAS_EXT_CONTROL_NSLEEP;
1529                        if (!ret) {
1530                                switch (prop) {
1531                                case 1:
1532                                        econtrol = PALMAS_EXT_CONTROL_ENABLE1;
1533                                        break;
1534                                case 2:
1535                                        econtrol = PALMAS_EXT_CONTROL_ENABLE2;
1536                                        break;
1537                                case 3:
1538                                        econtrol = PALMAS_EXT_CONTROL_NSLEEP;
1539                                        break;
1540                                default:
1541                                        WARN_ON(1);
1542                                        dev_warn(dev,
1543                                                 "%s: Invalid roof-floor option: %u\n",
1544                                                 match->name, prop);
1545                                        break;
1546                                }
1547                        }
1548                        rinit->roof_floor = econtrol;
1549                }
1550
1551                ret = of_property_read_u32(np, "ti,mode-sleep", &prop);
1552                if (!ret)
1553                        rinit->mode_sleep = prop;
1554
1555                ret = of_property_read_bool(np, "ti,smps-range");
1556                if (ret)
1557                        rinit->vsel = PALMAS_SMPS12_VOLTAGE_RANGE;
1558
1559                if (idx == PALMAS_REG_LDO8)
1560                        pdata->enable_ldo8_tracking = of_property_read_bool(
1561                                                np, "ti,enable-ldo8-tracking");
1562        }
1563
1564        pdata->ldo6_vibrator = of_property_read_bool(node, "ti,ldo6-vibrator");
1565
1566        return 0;
1567}
1568
1569static const struct of_device_id of_palmas_match_tbl[] = {
1570        {
1571                .compatible = "ti,palmas-pmic",
1572                .data = &palmas_ddata,
1573        },
1574        {
1575                .compatible = "ti,twl6035-pmic",
1576                .data = &palmas_ddata,
1577        },
1578        {
1579                .compatible = "ti,twl6036-pmic",
1580                .data = &palmas_ddata,
1581        },
1582        {
1583                .compatible = "ti,twl6037-pmic",
1584                .data = &palmas_ddata,
1585        },
1586        {
1587                .compatible = "ti,tps65913-pmic",
1588                .data = &palmas_ddata,
1589        },
1590        {
1591                .compatible = "ti,tps65914-pmic",
1592                .data = &palmas_ddata,
1593        },
1594        {
1595                .compatible = "ti,tps80036-pmic",
1596                .data = &palmas_ddata,
1597        },
1598        {
1599                .compatible = "ti,tps659038-pmic",
1600                .data = &palmas_ddata,
1601        },
1602         {
1603                .compatible = "ti,tps65917-pmic",
1604                .data = &tps65917_ddata,
1605        },
1606        { /* end */ }
1607};
1608
1609static int palmas_regulators_probe(struct platform_device *pdev)
1610{
1611        struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
1612        struct palmas_pmic_platform_data *pdata = dev_get_platdata(&pdev->dev);
1613        struct device_node *node = pdev->dev.of_node;
1614        struct palmas_pmic_driver_data *driver_data;
1615        struct regulator_config config = { };
1616        struct palmas_pmic *pmic;
1617        const char *pdev_name;
1618        const struct of_device_id *match;
1619        int ret = 0;
1620        unsigned int reg;
1621
1622        match = of_match_device(of_match_ptr(of_palmas_match_tbl), &pdev->dev);
1623
1624        if (!match)
1625                return -ENODATA;
1626
1627        driver_data = (struct palmas_pmic_driver_data *)match->data;
1628        pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
1629        if (!pdata)
1630                return -ENOMEM;
1631
1632        pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
1633        if (!pmic)
1634                return -ENOMEM;
1635
1636        if (of_device_is_compatible(node, "ti,tps659038-pmic")) {
1637                palmas_generic_regs_info[PALMAS_REG_REGEN2].ctrl_addr =
1638                                                        TPS659038_REGEN2_CTRL;
1639                palmas_ddata.has_regen3 = false;
1640        }
1641
1642        pmic->dev = &pdev->dev;
1643        pmic->palmas = palmas;
1644        palmas->pmic = pmic;
1645        platform_set_drvdata(pdev, pmic);
1646        pmic->palmas->pmic_ddata = driver_data;
1647
1648        ret = palmas_dt_to_pdata(&pdev->dev, node, pdata, driver_data);
1649        if (ret)
1650                return ret;
1651
1652        ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, &reg);
1653        if (ret)
1654                return ret;
1655
1656        if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN) {
1657                pmic->smps123 = 1;
1658                pmic->smps12 = 1;
1659        }
1660
1661        if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
1662                pmic->smps457 = 1;
1663
1664        config.regmap = palmas->regmap[REGULATOR_SLAVE];
1665        config.dev = &pdev->dev;
1666        config.driver_data = pmic;
1667        pdev_name = pdev->name;
1668
1669        ret = driver_data->smps_register(pmic, driver_data, pdata, pdev_name,
1670                                         config);
1671        if (ret)
1672                return ret;
1673
1674        ret = driver_data->ldo_register(pmic, driver_data, pdata, pdev_name,
1675                                        config);
1676
1677        return ret;
1678}
1679
1680static struct platform_driver palmas_driver = {
1681        .driver = {
1682                .name = "palmas-pmic",
1683                .of_match_table = of_palmas_match_tbl,
1684        },
1685        .probe = palmas_regulators_probe,
1686};
1687
1688static int __init palmas_init(void)
1689{
1690        return platform_driver_register(&palmas_driver);
1691}
1692subsys_initcall(palmas_init);
1693
1694static void __exit palmas_exit(void)
1695{
1696        platform_driver_unregister(&palmas_driver);
1697}
1698module_exit(palmas_exit);
1699
1700MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1701MODULE_DESCRIPTION("Palmas voltage regulator driver");
1702MODULE_LICENSE("GPL");
1703MODULE_ALIAS("platform:palmas-pmic");
1704MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);
1705