linux/drivers/regulator/s5m8767.c
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   1/*
   2 * s5m8767.c
   3 *
   4 * Copyright (c) 2011 Samsung Electronics Co., Ltd
   5 *              http://www.samsung.com
   6 *
   7 *  This program is free software; you can redistribute  it and/or modify it
   8 *  under  the terms of  the GNU General  Public License as published by the
   9 *  Free Software Foundation;  either version 2 of the  License, or (at your
  10 *  option) any later version.
  11 *
  12 */
  13
  14#include <linux/bug.h>
  15#include <linux/err.h>
  16#include <linux/gpio.h>
  17#include <linux/slab.h>
  18#include <linux/module.h>
  19#include <linux/platform_device.h>
  20#include <linux/regulator/driver.h>
  21#include <linux/regulator/machine.h>
  22#include <linux/mfd/samsung/core.h>
  23#include <linux/mfd/samsung/s5m8767.h>
  24
  25struct s5m8767_info {
  26        struct device *dev;
  27        struct sec_pmic_dev *iodev;
  28        int num_regulators;
  29        struct regulator_dev **rdev;
  30        struct sec_opmode_data *opmode;
  31
  32        int ramp_delay;
  33        bool buck2_ramp;
  34        bool buck3_ramp;
  35        bool buck4_ramp;
  36
  37        bool buck2_gpiodvs;
  38        bool buck3_gpiodvs;
  39        bool buck4_gpiodvs;
  40        u8 buck2_vol[8];
  41        u8 buck3_vol[8];
  42        u8 buck4_vol[8];
  43        int buck_gpios[3];
  44        int buck_ds[3];
  45        int buck_gpioindex;
  46};
  47
  48struct sec_voltage_desc {
  49        int max;
  50        int min;
  51        int step;
  52};
  53
  54static const struct sec_voltage_desc buck_voltage_val1 = {
  55        .max = 2225000,
  56        .min =  650000,
  57        .step =   6250,
  58};
  59
  60static const struct sec_voltage_desc buck_voltage_val2 = {
  61        .max = 1600000,
  62        .min =  600000,
  63        .step =   6250,
  64};
  65
  66static const struct sec_voltage_desc buck_voltage_val3 = {
  67        .max = 3000000,
  68        .min =  750000,
  69        .step =  12500,
  70};
  71
  72static const struct sec_voltage_desc ldo_voltage_val1 = {
  73        .max = 3950000,
  74        .min =  800000,
  75        .step =  50000,
  76};
  77
  78static const struct sec_voltage_desc ldo_voltage_val2 = {
  79        .max = 2375000,
  80        .min =  800000,
  81        .step =  25000,
  82};
  83
  84static const struct sec_voltage_desc *reg_voltage_map[] = {
  85        [S5M8767_LDO1] = &ldo_voltage_val2,
  86        [S5M8767_LDO2] = &ldo_voltage_val2,
  87        [S5M8767_LDO3] = &ldo_voltage_val1,
  88        [S5M8767_LDO4] = &ldo_voltage_val1,
  89        [S5M8767_LDO5] = &ldo_voltage_val1,
  90        [S5M8767_LDO6] = &ldo_voltage_val2,
  91        [S5M8767_LDO7] = &ldo_voltage_val2,
  92        [S5M8767_LDO8] = &ldo_voltage_val2,
  93        [S5M8767_LDO9] = &ldo_voltage_val1,
  94        [S5M8767_LDO10] = &ldo_voltage_val1,
  95        [S5M8767_LDO11] = &ldo_voltage_val1,
  96        [S5M8767_LDO12] = &ldo_voltage_val1,
  97        [S5M8767_LDO13] = &ldo_voltage_val1,
  98        [S5M8767_LDO14] = &ldo_voltage_val1,
  99        [S5M8767_LDO15] = &ldo_voltage_val2,
 100        [S5M8767_LDO16] = &ldo_voltage_val1,
 101        [S5M8767_LDO17] = &ldo_voltage_val1,
 102        [S5M8767_LDO18] = &ldo_voltage_val1,
 103        [S5M8767_LDO19] = &ldo_voltage_val1,
 104        [S5M8767_LDO20] = &ldo_voltage_val1,
 105        [S5M8767_LDO21] = &ldo_voltage_val1,
 106        [S5M8767_LDO22] = &ldo_voltage_val1,
 107        [S5M8767_LDO23] = &ldo_voltage_val1,
 108        [S5M8767_LDO24] = &ldo_voltage_val1,
 109        [S5M8767_LDO25] = &ldo_voltage_val1,
 110        [S5M8767_LDO26] = &ldo_voltage_val1,
 111        [S5M8767_LDO27] = &ldo_voltage_val1,
 112        [S5M8767_LDO28] = &ldo_voltage_val1,
 113        [S5M8767_BUCK1] = &buck_voltage_val1,
 114        [S5M8767_BUCK2] = &buck_voltage_val2,
 115        [S5M8767_BUCK3] = &buck_voltage_val2,
 116        [S5M8767_BUCK4] = &buck_voltage_val2,
 117        [S5M8767_BUCK5] = &buck_voltage_val1,
 118        [S5M8767_BUCK6] = &buck_voltage_val1,
 119        [S5M8767_BUCK7] = NULL,
 120        [S5M8767_BUCK8] = NULL,
 121        [S5M8767_BUCK9] = &buck_voltage_val3,
 122};
 123
 124static unsigned int s5m8767_opmode_reg[][4] = {
 125        /* {OFF, ON, LOWPOWER, SUSPEND} */
 126        /* LDO1 ... LDO28 */
 127        {0x0, 0x3, 0x2, 0x1}, /* LDO1 */
 128        {0x0, 0x3, 0x2, 0x1},
 129        {0x0, 0x3, 0x2, 0x1},
 130        {0x0, 0x0, 0x0, 0x0},
 131        {0x0, 0x3, 0x2, 0x1}, /* LDO5 */
 132        {0x0, 0x3, 0x2, 0x1},
 133        {0x0, 0x3, 0x2, 0x1},
 134        {0x0, 0x3, 0x2, 0x1},
 135        {0x0, 0x3, 0x2, 0x1},
 136        {0x0, 0x3, 0x2, 0x1}, /* LDO10 */
 137        {0x0, 0x3, 0x2, 0x1},
 138        {0x0, 0x3, 0x2, 0x1},
 139        {0x0, 0x3, 0x2, 0x1},
 140        {0x0, 0x3, 0x2, 0x1},
 141        {0x0, 0x3, 0x2, 0x1}, /* LDO15 */
 142        {0x0, 0x3, 0x2, 0x1},
 143        {0x0, 0x3, 0x2, 0x1},
 144        {0x0, 0x0, 0x0, 0x0},
 145        {0x0, 0x3, 0x2, 0x1},
 146        {0x0, 0x3, 0x2, 0x1}, /* LDO20 */
 147        {0x0, 0x3, 0x2, 0x1},
 148        {0x0, 0x3, 0x2, 0x1},
 149        {0x0, 0x0, 0x0, 0x0},
 150        {0x0, 0x3, 0x2, 0x1},
 151        {0x0, 0x3, 0x2, 0x1}, /* LDO25 */
 152        {0x0, 0x3, 0x2, 0x1},
 153        {0x0, 0x3, 0x2, 0x1},
 154        {0x0, 0x3, 0x2, 0x1}, /* LDO28 */
 155
 156        /* BUCK1 ... BUCK9 */
 157        {0x0, 0x3, 0x1, 0x1}, /* BUCK1 */
 158        {0x0, 0x3, 0x1, 0x1},
 159        {0x0, 0x3, 0x1, 0x1},
 160        {0x0, 0x3, 0x1, 0x1},
 161        {0x0, 0x3, 0x2, 0x1}, /* BUCK5 */
 162        {0x0, 0x3, 0x1, 0x1},
 163        {0x0, 0x3, 0x1, 0x1},
 164        {0x0, 0x3, 0x1, 0x1},
 165        {0x0, 0x3, 0x1, 0x1}, /* BUCK9 */
 166};
 167
 168static int s5m8767_get_register(struct regulator_dev *rdev, int *reg,
 169                                int *enable_ctrl)
 170{
 171        int i, reg_id = rdev_get_id(rdev);
 172        unsigned int mode;
 173        struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
 174
 175        switch (reg_id) {
 176        case S5M8767_LDO1 ... S5M8767_LDO2:
 177                *reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
 178                break;
 179        case S5M8767_LDO3 ... S5M8767_LDO28:
 180                *reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
 181                break;
 182        case S5M8767_BUCK1:
 183                *reg = S5M8767_REG_BUCK1CTRL1;
 184                break;
 185        case S5M8767_BUCK2 ... S5M8767_BUCK4:
 186                *reg = S5M8767_REG_BUCK2CTRL + (reg_id - S5M8767_BUCK2) * 9;
 187                break;
 188        case S5M8767_BUCK5:
 189                *reg = S5M8767_REG_BUCK5CTRL1;
 190                break;
 191        case S5M8767_BUCK6 ... S5M8767_BUCK9:
 192                *reg = S5M8767_REG_BUCK6CTRL1 + (reg_id - S5M8767_BUCK6) * 2;
 193                break;
 194        default:
 195                return -EINVAL;
 196        }
 197
 198        for (i = 0; i < s5m8767->num_regulators; i++) {
 199                if (s5m8767->opmode[i].id == reg_id) {
 200                        mode = s5m8767->opmode[i].mode;
 201                        break;
 202                }
 203        }
 204
 205        if (i < s5m8767->num_regulators)
 206                *enable_ctrl =
 207                s5m8767_opmode_reg[reg_id][mode] << S5M8767_ENCTRL_SHIFT;
 208
 209        return 0;
 210}
 211
 212static int s5m8767_reg_is_enabled(struct regulator_dev *rdev)
 213{
 214        struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
 215        int ret, reg;
 216        int mask = 0xc0, enable_ctrl;
 217        unsigned int val;
 218
 219        ret = s5m8767_get_register(rdev, &reg, &enable_ctrl);
 220        if (ret == -EINVAL)
 221                return 1;
 222        else if (ret)
 223                return ret;
 224
 225        ret = sec_reg_read(s5m8767->iodev, reg, &val);
 226        if (ret)
 227                return ret;
 228
 229        return (val & mask) == enable_ctrl;
 230}
 231
 232static int s5m8767_reg_enable(struct regulator_dev *rdev)
 233{
 234        struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
 235        int ret, reg;
 236        int mask = 0xc0, enable_ctrl;
 237
 238        ret = s5m8767_get_register(rdev, &reg, &enable_ctrl);
 239        if (ret)
 240                return ret;
 241
 242        return sec_reg_update(s5m8767->iodev, reg, enable_ctrl, mask);
 243}
 244
 245static int s5m8767_reg_disable(struct regulator_dev *rdev)
 246{
 247        struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
 248        int ret, reg;
 249        int  mask = 0xc0, enable_ctrl;
 250
 251        ret = s5m8767_get_register(rdev, &reg, &enable_ctrl);
 252        if (ret)
 253                return ret;
 254
 255        return sec_reg_update(s5m8767->iodev, reg, ~mask, mask);
 256}
 257
 258static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg)
 259{
 260        struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
 261        int reg_id = rdev_get_id(rdev);
 262        int reg;
 263
 264        switch (reg_id) {
 265        case S5M8767_LDO1 ... S5M8767_LDO2:
 266                reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
 267                break;
 268        case S5M8767_LDO3 ... S5M8767_LDO28:
 269                reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
 270                break;
 271        case S5M8767_BUCK1:
 272                reg = S5M8767_REG_BUCK1CTRL2;
 273                break;
 274        case S5M8767_BUCK2:
 275                reg = S5M8767_REG_BUCK2DVS1;
 276                if (s5m8767->buck2_gpiodvs)
 277                        reg += s5m8767->buck_gpioindex;
 278                break;
 279        case S5M8767_BUCK3:
 280                reg = S5M8767_REG_BUCK3DVS1;
 281                if (s5m8767->buck3_gpiodvs)
 282                        reg += s5m8767->buck_gpioindex;
 283                break;
 284        case S5M8767_BUCK4:
 285                reg = S5M8767_REG_BUCK4DVS1;
 286                if (s5m8767->buck4_gpiodvs)
 287                        reg += s5m8767->buck_gpioindex;
 288                break;
 289        case S5M8767_BUCK5:
 290                reg = S5M8767_REG_BUCK5CTRL2;
 291                break;
 292        case S5M8767_BUCK6 ... S5M8767_BUCK9:
 293                reg = S5M8767_REG_BUCK6CTRL2 + (reg_id - S5M8767_BUCK6) * 2;
 294                break;
 295        default:
 296                return -EINVAL;
 297        }
 298
 299        *_reg = reg;
 300
 301        return 0;
 302}
 303
 304static int s5m8767_get_voltage_sel(struct regulator_dev *rdev)
 305{
 306        struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
 307        int reg, mask, ret;
 308        int reg_id = rdev_get_id(rdev);
 309        unsigned int val;
 310
 311        ret = s5m8767_get_voltage_register(rdev, &reg);
 312        if (ret)
 313                return ret;
 314
 315        mask = (reg_id < S5M8767_BUCK1) ? 0x3f : 0xff;
 316
 317        ret = sec_reg_read(s5m8767->iodev, reg, &val);
 318        if (ret)
 319                return ret;
 320
 321        val &= mask;
 322
 323        return val;
 324}
 325
 326static int s5m8767_convert_voltage_to_sel(
 327                const struct sec_voltage_desc *desc,
 328                int min_vol, int max_vol)
 329{
 330        int selector = 0;
 331
 332        if (desc == NULL)
 333                return -EINVAL;
 334
 335        if (max_vol < desc->min || min_vol > desc->max)
 336                return -EINVAL;
 337
 338        if (min_vol < desc->min)
 339                min_vol = desc->min;
 340
 341        selector = DIV_ROUND_UP(min_vol - desc->min, desc->step);
 342
 343        if (desc->min + desc->step * selector > max_vol)
 344                return -EINVAL;
 345
 346        return selector;
 347}
 348
 349static inline int s5m8767_set_high(struct s5m8767_info *s5m8767)
 350{
 351        int temp_index = s5m8767->buck_gpioindex;
 352
 353        gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
 354        gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
 355        gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
 356
 357        return 0;
 358}
 359
 360static inline int s5m8767_set_low(struct s5m8767_info *s5m8767)
 361{
 362        int temp_index = s5m8767->buck_gpioindex;
 363
 364        gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
 365        gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
 366        gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
 367
 368        return 0;
 369}
 370
 371static int s5m8767_set_voltage_sel(struct regulator_dev *rdev,
 372                                   unsigned selector)
 373{
 374        struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
 375        int reg_id = rdev_get_id(rdev);
 376        int reg, mask, ret = 0, old_index, index = 0;
 377        u8 *buck234_vol = NULL;
 378
 379        switch (reg_id) {
 380        case S5M8767_LDO1 ... S5M8767_LDO28:
 381                mask = 0x3f;
 382                break;
 383        case S5M8767_BUCK1 ... S5M8767_BUCK6:
 384                mask = 0xff;
 385                if (reg_id == S5M8767_BUCK2 && s5m8767->buck2_gpiodvs)
 386                        buck234_vol = &s5m8767->buck2_vol[0];
 387                else if (reg_id == S5M8767_BUCK3 && s5m8767->buck3_gpiodvs)
 388                        buck234_vol = &s5m8767->buck3_vol[0];
 389                else if (reg_id == S5M8767_BUCK4 && s5m8767->buck4_gpiodvs)
 390                        buck234_vol = &s5m8767->buck4_vol[0];
 391                break;
 392        case S5M8767_BUCK7 ... S5M8767_BUCK8:
 393                return -EINVAL;
 394        case S5M8767_BUCK9:
 395                mask = 0xff;
 396                break;
 397        default:
 398                return -EINVAL;
 399        }
 400
 401        /* buck234_vol != NULL means to control buck234 voltage via DVS GPIO */
 402        if (buck234_vol) {
 403                while (*buck234_vol != selector) {
 404                        buck234_vol++;
 405                        index++;
 406                }
 407                old_index = s5m8767->buck_gpioindex;
 408                s5m8767->buck_gpioindex = index;
 409
 410                if (index > old_index)
 411                        return s5m8767_set_high(s5m8767);
 412                else
 413                        return s5m8767_set_low(s5m8767);
 414        } else {
 415                ret = s5m8767_get_voltage_register(rdev, &reg);
 416                if (ret)
 417                        return ret;
 418
 419                return sec_reg_update(s5m8767->iodev, reg, selector, mask);
 420        }
 421}
 422
 423static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev,
 424                                             unsigned int old_sel,
 425                                             unsigned int new_sel)
 426{
 427        struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
 428        const struct sec_voltage_desc *desc;
 429        int reg_id = rdev_get_id(rdev);
 430
 431        desc = reg_voltage_map[reg_id];
 432
 433        if ((old_sel < new_sel) && s5m8767->ramp_delay)
 434                return DIV_ROUND_UP(desc->step * (new_sel - old_sel),
 435                                        s5m8767->ramp_delay * 1000);
 436        return 0;
 437}
 438
 439static struct regulator_ops s5m8767_ops = {
 440        .list_voltage           = regulator_list_voltage_linear,
 441        .is_enabled             = s5m8767_reg_is_enabled,
 442        .enable                 = s5m8767_reg_enable,
 443        .disable                = s5m8767_reg_disable,
 444        .get_voltage_sel        = s5m8767_get_voltage_sel,
 445        .set_voltage_sel        = s5m8767_set_voltage_sel,
 446        .set_voltage_time_sel   = s5m8767_set_voltage_time_sel,
 447};
 448
 449static struct regulator_ops s5m8767_buck78_ops = {
 450        .is_enabled             = s5m8767_reg_is_enabled,
 451        .enable                 = s5m8767_reg_enable,
 452        .disable                = s5m8767_reg_disable,
 453};
 454
 455#define s5m8767_regulator_desc(_name) {         \
 456        .name           = #_name,               \
 457        .id             = S5M8767_##_name,      \
 458        .ops            = &s5m8767_ops,         \
 459        .type           = REGULATOR_VOLTAGE,    \
 460        .owner          = THIS_MODULE,          \
 461}
 462
 463#define s5m8767_regulator_buck78_desc(_name) {  \
 464        .name           = #_name,               \
 465        .id             = S5M8767_##_name,      \
 466        .ops            = &s5m8767_buck78_ops,  \
 467        .type           = REGULATOR_VOLTAGE,    \
 468        .owner          = THIS_MODULE,          \
 469}
 470
 471static struct regulator_desc regulators[] = {
 472        s5m8767_regulator_desc(LDO1),
 473        s5m8767_regulator_desc(LDO2),
 474        s5m8767_regulator_desc(LDO3),
 475        s5m8767_regulator_desc(LDO4),
 476        s5m8767_regulator_desc(LDO5),
 477        s5m8767_regulator_desc(LDO6),
 478        s5m8767_regulator_desc(LDO7),
 479        s5m8767_regulator_desc(LDO8),
 480        s5m8767_regulator_desc(LDO9),
 481        s5m8767_regulator_desc(LDO10),
 482        s5m8767_regulator_desc(LDO11),
 483        s5m8767_regulator_desc(LDO12),
 484        s5m8767_regulator_desc(LDO13),
 485        s5m8767_regulator_desc(LDO14),
 486        s5m8767_regulator_desc(LDO15),
 487        s5m8767_regulator_desc(LDO16),
 488        s5m8767_regulator_desc(LDO17),
 489        s5m8767_regulator_desc(LDO18),
 490        s5m8767_regulator_desc(LDO19),
 491        s5m8767_regulator_desc(LDO20),
 492        s5m8767_regulator_desc(LDO21),
 493        s5m8767_regulator_desc(LDO22),
 494        s5m8767_regulator_desc(LDO23),
 495        s5m8767_regulator_desc(LDO24),
 496        s5m8767_regulator_desc(LDO25),
 497        s5m8767_regulator_desc(LDO26),
 498        s5m8767_regulator_desc(LDO27),
 499        s5m8767_regulator_desc(LDO28),
 500        s5m8767_regulator_desc(BUCK1),
 501        s5m8767_regulator_desc(BUCK2),
 502        s5m8767_regulator_desc(BUCK3),
 503        s5m8767_regulator_desc(BUCK4),
 504        s5m8767_regulator_desc(BUCK5),
 505        s5m8767_regulator_desc(BUCK6),
 506        s5m8767_regulator_buck78_desc(BUCK7),
 507        s5m8767_regulator_buck78_desc(BUCK8),
 508        s5m8767_regulator_desc(BUCK9),
 509};
 510
 511static int s5m8767_pmic_probe(struct platform_device *pdev)
 512{
 513        struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
 514        struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
 515        struct regulator_config config = { };
 516        struct regulator_dev **rdev;
 517        struct s5m8767_info *s5m8767;
 518        int i, ret, size, buck_init;
 519
 520        if (!pdata) {
 521                dev_err(pdev->dev.parent, "Platform data not supplied\n");
 522                return -ENODEV;
 523        }
 524
 525        if (pdata->buck2_gpiodvs) {
 526                if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) {
 527                        dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
 528                        return -EINVAL;
 529                }
 530        }
 531
 532        if (pdata->buck3_gpiodvs) {
 533                if (pdata->buck2_gpiodvs || pdata->buck4_gpiodvs) {
 534                        dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
 535                        return -EINVAL;
 536                }
 537        }
 538
 539        if (pdata->buck4_gpiodvs) {
 540                if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs) {
 541                        dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
 542                        return -EINVAL;
 543                }
 544        }
 545
 546        s5m8767 = devm_kzalloc(&pdev->dev, sizeof(struct s5m8767_info),
 547                                GFP_KERNEL);
 548        if (!s5m8767)
 549                return -ENOMEM;
 550
 551        size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2);
 552        s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
 553        if (!s5m8767->rdev)
 554                return -ENOMEM;
 555
 556        rdev = s5m8767->rdev;
 557        s5m8767->dev = &pdev->dev;
 558        s5m8767->iodev = iodev;
 559        s5m8767->num_regulators = pdata->num_regulators;
 560        platform_set_drvdata(pdev, s5m8767);
 561
 562        s5m8767->buck_gpioindex = pdata->buck_default_idx;
 563        s5m8767->buck2_gpiodvs = pdata->buck2_gpiodvs;
 564        s5m8767->buck3_gpiodvs = pdata->buck3_gpiodvs;
 565        s5m8767->buck4_gpiodvs = pdata->buck4_gpiodvs;
 566        s5m8767->buck_gpios[0] = pdata->buck_gpios[0];
 567        s5m8767->buck_gpios[1] = pdata->buck_gpios[1];
 568        s5m8767->buck_gpios[2] = pdata->buck_gpios[2];
 569        s5m8767->buck_ds[0] = pdata->buck_ds[0];
 570        s5m8767->buck_ds[1] = pdata->buck_ds[1];
 571        s5m8767->buck_ds[2] = pdata->buck_ds[2];
 572
 573        s5m8767->ramp_delay = pdata->buck_ramp_delay;
 574        s5m8767->buck2_ramp = pdata->buck2_ramp_enable;
 575        s5m8767->buck3_ramp = pdata->buck3_ramp_enable;
 576        s5m8767->buck4_ramp = pdata->buck4_ramp_enable;
 577        s5m8767->opmode = pdata->opmode;
 578
 579        buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
 580                                                pdata->buck2_init,
 581                                                pdata->buck2_init +
 582                                                buck_voltage_val2.step);
 583
 584        sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS2, buck_init);
 585
 586        buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
 587                                                pdata->buck3_init,
 588                                                pdata->buck3_init +
 589                                                buck_voltage_val2.step);
 590
 591        sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS2, buck_init);
 592
 593        buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
 594                                                pdata->buck4_init,
 595                                                pdata->buck4_init +
 596                                                buck_voltage_val2.step);
 597
 598        sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS2, buck_init);
 599
 600        for (i = 0; i < 8; i++) {
 601                if (s5m8767->buck2_gpiodvs) {
 602                        s5m8767->buck2_vol[i] =
 603                                s5m8767_convert_voltage_to_sel(
 604                                                &buck_voltage_val2,
 605                                                pdata->buck2_voltage[i],
 606                                                pdata->buck2_voltage[i] +
 607                                                buck_voltage_val2.step);
 608                }
 609
 610                if (s5m8767->buck3_gpiodvs) {
 611                        s5m8767->buck3_vol[i] =
 612                                s5m8767_convert_voltage_to_sel(
 613                                                &buck_voltage_val2,
 614                                                pdata->buck3_voltage[i],
 615                                                pdata->buck3_voltage[i] +
 616                                                buck_voltage_val2.step);
 617                }
 618
 619                if (s5m8767->buck4_gpiodvs) {
 620                        s5m8767->buck4_vol[i] =
 621                                s5m8767_convert_voltage_to_sel(
 622                                                &buck_voltage_val2,
 623                                                pdata->buck4_voltage[i],
 624                                                pdata->buck4_voltage[i] +
 625                                                buck_voltage_val2.step);
 626                }
 627        }
 628
 629        if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
 630                                                pdata->buck4_gpiodvs) {
 631
 632                if (!gpio_is_valid(pdata->buck_gpios[0]) ||
 633                        !gpio_is_valid(pdata->buck_gpios[1]) ||
 634                        !gpio_is_valid(pdata->buck_gpios[2])) {
 635                        dev_err(&pdev->dev, "GPIO NOT VALID\n");
 636                        return -EINVAL;
 637                }
 638
 639                ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[0],
 640                                        "S5M8767 SET1");
 641                if (ret)
 642                        return ret;
 643
 644                ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[1],
 645                                        "S5M8767 SET2");
 646                if (ret)
 647                        return ret;
 648
 649                ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[2],
 650                                        "S5M8767 SET3");
 651                if (ret)
 652                        return ret;
 653
 654                /* SET1 GPIO */
 655                gpio_direction_output(pdata->buck_gpios[0],
 656                                (s5m8767->buck_gpioindex >> 2) & 0x1);
 657                /* SET2 GPIO */
 658                gpio_direction_output(pdata->buck_gpios[1],
 659                                (s5m8767->buck_gpioindex >> 1) & 0x1);
 660                /* SET3 GPIO */
 661                gpio_direction_output(pdata->buck_gpios[2],
 662                                (s5m8767->buck_gpioindex >> 0) & 0x1);
 663        }
 664
 665        ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[0], "S5M8767 DS2");
 666        if (ret)
 667                return ret;
 668
 669        ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[1], "S5M8767 DS3");
 670        if (ret)
 671                return ret;
 672
 673        ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[2], "S5M8767 DS4");
 674        if (ret)
 675                return ret;
 676
 677        /* DS2 GPIO */
 678        gpio_direction_output(pdata->buck_ds[0], 0x0);
 679        /* DS3 GPIO */
 680        gpio_direction_output(pdata->buck_ds[1], 0x0);
 681        /* DS4 GPIO */
 682        gpio_direction_output(pdata->buck_ds[2], 0x0);
 683
 684        if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
 685           pdata->buck4_gpiodvs) {
 686                sec_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL,
 687                                (pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1),
 688                                1 << 1);
 689                sec_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL,
 690                                (pdata->buck3_gpiodvs) ? (1 << 1) : (0 << 1),
 691                                1 << 1);
 692                sec_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL,
 693                                (pdata->buck4_gpiodvs) ? (1 << 1) : (0 << 1),
 694                                1 << 1);
 695        }
 696
 697        /* Initialize GPIO DVS registers */
 698        for (i = 0; i < 8; i++) {
 699                if (s5m8767->buck2_gpiodvs) {
 700                        sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS1 + i,
 701                                           s5m8767->buck2_vol[i]);
 702                }
 703
 704                if (s5m8767->buck3_gpiodvs) {
 705                        sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS1 + i,
 706                                           s5m8767->buck3_vol[i]);
 707                }
 708
 709                if (s5m8767->buck4_gpiodvs) {
 710                        sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS1 + i,
 711                                           s5m8767->buck4_vol[i]);
 712                }
 713        }
 714
 715        if (s5m8767->buck2_ramp)
 716                sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x08, 0x08);
 717
 718        if (s5m8767->buck3_ramp)
 719                sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x04, 0x04);
 720
 721        if (s5m8767->buck4_ramp)
 722                sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x02, 0x02);
 723
 724        if (s5m8767->buck2_ramp || s5m8767->buck3_ramp
 725                || s5m8767->buck4_ramp) {
 726                switch (s5m8767->ramp_delay) {
 727                case 5:
 728                        sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
 729                                        0x40, 0xf0);
 730                        break;
 731                case 10:
 732                        sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
 733                                        0x90, 0xf0);
 734                        break;
 735                case 25:
 736                        sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
 737                                        0xd0, 0xf0);
 738                        break;
 739                case 50:
 740                        sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
 741                                        0xe0, 0xf0);
 742                        break;
 743                case 100:
 744                        sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
 745                                        0xf0, 0xf0);
 746                        break;
 747                default:
 748                        sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
 749                                        0x90, 0xf0);
 750                }
 751        }
 752
 753        for (i = 0; i < pdata->num_regulators; i++) {
 754                const struct sec_voltage_desc *desc;
 755                int id = pdata->regulators[i].id;
 756
 757                desc = reg_voltage_map[id];
 758                if (desc) {
 759                        regulators[id].n_voltages =
 760                                (desc->max - desc->min) / desc->step + 1;
 761                        regulators[id].min_uV = desc->min;
 762                        regulators[id].uV_step = desc->step;
 763                }
 764
 765                config.dev = s5m8767->dev;
 766                config.init_data = pdata->regulators[i].initdata;
 767                config.driver_data = s5m8767;
 768
 769                rdev[i] = regulator_register(&regulators[id], &config);
 770                if (IS_ERR(rdev[i])) {
 771                        ret = PTR_ERR(rdev[i]);
 772                        dev_err(s5m8767->dev, "regulator init failed for %d\n",
 773                                        id);
 774                        rdev[i] = NULL;
 775                        goto err;
 776                }
 777        }
 778
 779        return 0;
 780err:
 781        for (i = 0; i < s5m8767->num_regulators; i++)
 782                if (rdev[i])
 783                        regulator_unregister(rdev[i]);
 784
 785        return ret;
 786}
 787
 788static int s5m8767_pmic_remove(struct platform_device *pdev)
 789{
 790        struct s5m8767_info *s5m8767 = platform_get_drvdata(pdev);
 791        struct regulator_dev **rdev = s5m8767->rdev;
 792        int i;
 793
 794        for (i = 0; i < s5m8767->num_regulators; i++)
 795                if (rdev[i])
 796                        regulator_unregister(rdev[i]);
 797
 798        return 0;
 799}
 800
 801static const struct platform_device_id s5m8767_pmic_id[] = {
 802        { "s5m8767-pmic", 0},
 803        { },
 804};
 805MODULE_DEVICE_TABLE(platform, s5m8767_pmic_id);
 806
 807static struct platform_driver s5m8767_pmic_driver = {
 808        .driver = {
 809                .name = "s5m8767-pmic",
 810                .owner = THIS_MODULE,
 811        },
 812        .probe = s5m8767_pmic_probe,
 813        .remove = s5m8767_pmic_remove,
 814        .id_table = s5m8767_pmic_id,
 815};
 816
 817static int __init s5m8767_pmic_init(void)
 818{
 819        return platform_driver_register(&s5m8767_pmic_driver);
 820}
 821subsys_initcall(s5m8767_pmic_init);
 822
 823static void __exit s5m8767_pmic_exit(void)
 824{
 825        platform_driver_unregister(&s5m8767_pmic_driver);
 826}
 827module_exit(s5m8767_pmic_exit);
 828
 829/* Module information */
 830MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
 831MODULE_DESCRIPTION("SAMSUNG S5M8767 Regulator Driver");
 832MODULE_LICENSE("GPL");
 833
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