linux/drivers/regulator/max77686.c
<<
>>
Prefs
   1/*
   2 * max77686.c - Regulator driver for the Maxim 77686
   3 *
   4 * Copyright (C) 2012 Samsung Electronics
   5 * Chiwoong Byun <woong.byun@smasung.com>
   6 * Jonghwa Lee <jonghwa3.lee@samsung.com>
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; either version 2 of the License, or
  11 * (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21 *
  22 * This driver is based on max8997.c
  23 */
  24
  25#include <linux/kernel.h>
  26#include <linux/bug.h>
  27#include <linux/err.h>
  28#include <linux/gpio.h>
  29#include <linux/slab.h>
  30#include <linux/platform_device.h>
  31#include <linux/regulator/driver.h>
  32#include <linux/regulator/machine.h>
  33#include <linux/regulator/of_regulator.h>
  34#include <linux/mfd/max77686.h>
  35#include <linux/mfd/max77686-private.h>
  36
  37#define MAX77686_LDO_MINUV      800000
  38#define MAX77686_LDO_UVSTEP     50000
  39#define MAX77686_LDO_LOW_MINUV  800000
  40#define MAX77686_LDO_LOW_UVSTEP 25000
  41#define MAX77686_BUCK_MINUV     750000
  42#define MAX77686_BUCK_UVSTEP    50000
  43#define MAX77686_RAMP_DELAY     100000                  /* uV/us */
  44#define MAX77686_DVS_RAMP_DELAY 27500                   /* uV/us */
  45#define MAX77686_DVS_MINUV      600000
  46#define MAX77686_DVS_UVSTEP     12500
  47
  48#define MAX77686_OPMODE_SHIFT   6
  49#define MAX77686_OPMODE_BUCK234_SHIFT   4
  50#define MAX77686_OPMODE_MASK    0x3
  51
  52#define MAX77686_VSEL_MASK      0x3F
  53#define MAX77686_DVS_VSEL_MASK  0xFF
  54
  55#define MAX77686_RAMP_RATE_MASK 0xC0
  56
  57#define MAX77686_REGULATORS     MAX77686_REG_MAX
  58#define MAX77686_LDOS           26
  59
  60enum max77686_ramp_rate {
  61        RAMP_RATE_13P75MV,
  62        RAMP_RATE_27P5MV,
  63        RAMP_RATE_55MV,
  64        RAMP_RATE_NO_CTRL,      /* 100mV/us */
  65};
  66
  67struct max77686_data {
  68        struct regulator_dev *rdev[MAX77686_REGULATORS];
  69        unsigned int opmode[MAX77686_REGULATORS];
  70};
  71
  72/* Some BUCKS supports Normal[ON/OFF] mode during suspend */
  73static int max77686_buck_set_suspend_disable(struct regulator_dev *rdev)
  74{
  75        unsigned int val;
  76        struct max77686_data *max77686 = rdev_get_drvdata(rdev);
  77        int ret, id = rdev_get_id(rdev);
  78
  79        if (id == MAX77686_BUCK1)
  80                val = 0x1;
  81        else
  82                val = 0x1 << MAX77686_OPMODE_BUCK234_SHIFT;
  83
  84        ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
  85                                 rdev->desc->enable_mask, val);
  86        if (ret)
  87                return ret;
  88
  89        max77686->opmode[id] = val;
  90        return 0;
  91}
  92
  93/* Some LDOs supports [LPM/Normal]ON mode during suspend state */
  94static int max77686_set_suspend_mode(struct regulator_dev *rdev,
  95                                     unsigned int mode)
  96{
  97        struct max77686_data *max77686 = rdev_get_drvdata(rdev);
  98        unsigned int val;
  99        int ret, id = rdev_get_id(rdev);
 100
 101        /* BUCK[5-9] doesn't support this feature */
 102        if (id >= MAX77686_BUCK5)
 103                return 0;
 104
 105        switch (mode) {
 106        case REGULATOR_MODE_IDLE:                       /* ON in LP Mode */
 107                val = 0x2 << MAX77686_OPMODE_SHIFT;
 108                break;
 109        case REGULATOR_MODE_NORMAL:                     /* ON in Normal Mode */
 110                val = 0x3 << MAX77686_OPMODE_SHIFT;
 111                break;
 112        default:
 113                pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
 114                        rdev->desc->name, mode);
 115                return -EINVAL;
 116        }
 117
 118        ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 119                                  rdev->desc->enable_mask, val);
 120        if (ret)
 121                return ret;
 122
 123        max77686->opmode[id] = val;
 124        return 0;
 125}
 126
 127/* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */
 128static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,
 129                                     unsigned int mode)
 130{
 131        unsigned int val;
 132        struct max77686_data *max77686 = rdev_get_drvdata(rdev);
 133        int ret;
 134
 135        switch (mode) {
 136        case REGULATOR_MODE_STANDBY:                    /* switch off */
 137                val = 0x1 << MAX77686_OPMODE_SHIFT;
 138                break;
 139        case REGULATOR_MODE_IDLE:                       /* ON in LP Mode */
 140                val = 0x2 << MAX77686_OPMODE_SHIFT;
 141                break;
 142        case REGULATOR_MODE_NORMAL:                     /* ON in Normal Mode */
 143                val = 0x3 << MAX77686_OPMODE_SHIFT;
 144                break;
 145        default:
 146                pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n",
 147                        rdev->desc->name, mode);
 148                return -EINVAL;
 149        }
 150
 151        ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 152                                 rdev->desc->enable_mask, val);
 153        if (ret)
 154                return ret;
 155
 156        max77686->opmode[rdev_get_id(rdev)] = val;
 157        return 0;
 158}
 159
 160static int max77686_enable(struct regulator_dev *rdev)
 161{
 162        struct max77686_data *max77686 = rdev_get_drvdata(rdev);
 163
 164        return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 165                                  rdev->desc->enable_mask,
 166                                  max77686->opmode[rdev_get_id(rdev)]);
 167}
 168
 169static int max77686_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 170{
 171        unsigned int ramp_value = RAMP_RATE_NO_CTRL;
 172
 173        switch (ramp_delay) {
 174        case 1 ... 13750:
 175                ramp_value = RAMP_RATE_13P75MV;
 176                break;
 177        case 13751 ... 27500:
 178                ramp_value = RAMP_RATE_27P5MV;
 179                break;
 180        case 27501 ... 55000:
 181                ramp_value = RAMP_RATE_55MV;
 182                break;
 183        case 55001 ... 100000:
 184                break;
 185        default:
 186                pr_warn("%s: ramp_delay: %d not supported, setting 100000\n",
 187                        rdev->desc->name, ramp_delay);
 188        }
 189
 190        return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 191                                  MAX77686_RAMP_RATE_MASK, ramp_value << 6);
 192}
 193
 194static struct regulator_ops max77686_ops = {
 195        .list_voltage           = regulator_list_voltage_linear,
 196        .map_voltage            = regulator_map_voltage_linear,
 197        .is_enabled             = regulator_is_enabled_regmap,
 198        .enable                 = max77686_enable,
 199        .disable                = regulator_disable_regmap,
 200        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 201        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 202        .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 203        .set_suspend_mode       = max77686_set_suspend_mode,
 204};
 205
 206static struct regulator_ops max77686_ldo_ops = {
 207        .list_voltage           = regulator_list_voltage_linear,
 208        .map_voltage            = regulator_map_voltage_linear,
 209        .is_enabled             = regulator_is_enabled_regmap,
 210        .enable                 = max77686_enable,
 211        .disable                = regulator_disable_regmap,
 212        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 213        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 214        .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 215        .set_suspend_mode       = max77686_ldo_set_suspend_mode,
 216};
 217
 218static struct regulator_ops max77686_buck1_ops = {
 219        .list_voltage           = regulator_list_voltage_linear,
 220        .map_voltage            = regulator_map_voltage_linear,
 221        .is_enabled             = regulator_is_enabled_regmap,
 222        .enable                 = max77686_enable,
 223        .disable                = regulator_disable_regmap,
 224        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 225        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 226        .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 227        .set_suspend_disable    = max77686_buck_set_suspend_disable,
 228};
 229
 230static struct regulator_ops max77686_buck_dvs_ops = {
 231        .list_voltage           = regulator_list_voltage_linear,
 232        .map_voltage            = regulator_map_voltage_linear,
 233        .is_enabled             = regulator_is_enabled_regmap,
 234        .enable                 = max77686_enable,
 235        .disable                = regulator_disable_regmap,
 236        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 237        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 238        .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 239        .set_ramp_delay         = max77686_set_ramp_delay,
 240        .set_suspend_disable    = max77686_buck_set_suspend_disable,
 241};
 242
 243#define regulator_desc_ldo(num)         {                               \
 244        .name           = "LDO"#num,                                    \
 245        .id             = MAX77686_LDO##num,                            \
 246        .ops            = &max77686_ops,                                \
 247        .type           = REGULATOR_VOLTAGE,                            \
 248        .owner          = THIS_MODULE,                                  \
 249        .min_uV         = MAX77686_LDO_MINUV,                           \
 250        .uV_step        = MAX77686_LDO_UVSTEP,                          \
 251        .ramp_delay     = MAX77686_RAMP_DELAY,                          \
 252        .n_voltages     = MAX77686_VSEL_MASK + 1,                       \
 253        .vsel_reg       = MAX77686_REG_LDO1CTRL1 + num - 1,             \
 254        .vsel_mask      = MAX77686_VSEL_MASK,                           \
 255        .enable_reg     = MAX77686_REG_LDO1CTRL1 + num - 1,             \
 256        .enable_mask    = MAX77686_OPMODE_MASK                          \
 257                        << MAX77686_OPMODE_SHIFT,                       \
 258}
 259#define regulator_desc_lpm_ldo(num)     {                               \
 260        .name           = "LDO"#num,                                    \
 261        .id             = MAX77686_LDO##num,                            \
 262        .ops            = &max77686_ldo_ops,                            \
 263        .type           = REGULATOR_VOLTAGE,                            \
 264        .owner          = THIS_MODULE,                                  \
 265        .min_uV         = MAX77686_LDO_MINUV,                           \
 266        .uV_step        = MAX77686_LDO_UVSTEP,                          \
 267        .ramp_delay     = MAX77686_RAMP_DELAY,                          \
 268        .n_voltages     = MAX77686_VSEL_MASK + 1,                       \
 269        .vsel_reg       = MAX77686_REG_LDO1CTRL1 + num - 1,             \
 270        .vsel_mask      = MAX77686_VSEL_MASK,                           \
 271        .enable_reg     = MAX77686_REG_LDO1CTRL1 + num - 1,             \
 272        .enable_mask    = MAX77686_OPMODE_MASK                          \
 273                        << MAX77686_OPMODE_SHIFT,                       \
 274}
 275#define regulator_desc_ldo_low(num)             {                       \
 276        .name           = "LDO"#num,                                    \
 277        .id             = MAX77686_LDO##num,                            \
 278        .ops            = &max77686_ldo_ops,                            \
 279        .type           = REGULATOR_VOLTAGE,                            \
 280        .owner          = THIS_MODULE,                                  \
 281        .min_uV         = MAX77686_LDO_LOW_MINUV,                       \
 282        .uV_step        = MAX77686_LDO_LOW_UVSTEP,                      \
 283        .ramp_delay     = MAX77686_RAMP_DELAY,                          \
 284        .n_voltages     = MAX77686_VSEL_MASK + 1,                       \
 285        .vsel_reg       = MAX77686_REG_LDO1CTRL1 + num - 1,             \
 286        .vsel_mask      = MAX77686_VSEL_MASK,                           \
 287        .enable_reg     = MAX77686_REG_LDO1CTRL1 + num - 1,             \
 288        .enable_mask    = MAX77686_OPMODE_MASK                          \
 289                        << MAX77686_OPMODE_SHIFT,                       \
 290}
 291#define regulator_desc_ldo1_low(num)            {                       \
 292        .name           = "LDO"#num,                                    \
 293        .id             = MAX77686_LDO##num,                            \
 294        .ops            = &max77686_ops,                                \
 295        .type           = REGULATOR_VOLTAGE,                            \
 296        .owner          = THIS_MODULE,                                  \
 297        .min_uV         = MAX77686_LDO_LOW_MINUV,                       \
 298        .uV_step        = MAX77686_LDO_LOW_UVSTEP,                      \
 299        .ramp_delay     = MAX77686_RAMP_DELAY,                          \
 300        .n_voltages     = MAX77686_VSEL_MASK + 1,                       \
 301        .vsel_reg       = MAX77686_REG_LDO1CTRL1 + num - 1,             \
 302        .vsel_mask      = MAX77686_VSEL_MASK,                           \
 303        .enable_reg     = MAX77686_REG_LDO1CTRL1 + num - 1,             \
 304        .enable_mask    = MAX77686_OPMODE_MASK                          \
 305                        << MAX77686_OPMODE_SHIFT,                       \
 306}
 307#define regulator_desc_buck(num)                {                       \
 308        .name           = "BUCK"#num,                                   \
 309        .id             = MAX77686_BUCK##num,                           \
 310        .ops            = &max77686_ops,                                \
 311        .type           = REGULATOR_VOLTAGE,                            \
 312        .owner          = THIS_MODULE,                                  \
 313        .min_uV         = MAX77686_BUCK_MINUV,                          \
 314        .uV_step        = MAX77686_BUCK_UVSTEP,                         \
 315        .ramp_delay     = MAX77686_RAMP_DELAY,                          \
 316        .n_voltages     = MAX77686_VSEL_MASK + 1,                       \
 317        .vsel_reg       = MAX77686_REG_BUCK5OUT + (num - 5) * 2,        \
 318        .vsel_mask      = MAX77686_VSEL_MASK,                           \
 319        .enable_reg     = MAX77686_REG_BUCK5CTRL + (num - 5) * 2,       \
 320        .enable_mask    = MAX77686_OPMODE_MASK,                         \
 321}
 322#define regulator_desc_buck1(num)               {                       \
 323        .name           = "BUCK"#num,                                   \
 324        .id             = MAX77686_BUCK##num,                           \
 325        .ops            = &max77686_buck1_ops,                          \
 326        .type           = REGULATOR_VOLTAGE,                            \
 327        .owner          = THIS_MODULE,                                  \
 328        .min_uV         = MAX77686_BUCK_MINUV,                          \
 329        .uV_step        = MAX77686_BUCK_UVSTEP,                         \
 330        .ramp_delay     = MAX77686_RAMP_DELAY,                          \
 331        .n_voltages     = MAX77686_VSEL_MASK + 1,                       \
 332        .vsel_reg       = MAX77686_REG_BUCK1OUT,                        \
 333        .vsel_mask      = MAX77686_VSEL_MASK,                           \
 334        .enable_reg     = MAX77686_REG_BUCK1CTRL,                       \
 335        .enable_mask    = MAX77686_OPMODE_MASK,                         \
 336}
 337#define regulator_desc_buck_dvs(num)            {                       \
 338        .name           = "BUCK"#num,                                   \
 339        .id             = MAX77686_BUCK##num,                           \
 340        .ops            = &max77686_buck_dvs_ops,                       \
 341        .type           = REGULATOR_VOLTAGE,                            \
 342        .owner          = THIS_MODULE,                                  \
 343        .min_uV         = MAX77686_DVS_MINUV,                           \
 344        .uV_step        = MAX77686_DVS_UVSTEP,                          \
 345        .ramp_delay     = MAX77686_DVS_RAMP_DELAY,                      \
 346        .n_voltages     = MAX77686_DVS_VSEL_MASK + 1,                   \
 347        .vsel_reg       = MAX77686_REG_BUCK2DVS1 + (num - 2) * 10,      \
 348        .vsel_mask      = MAX77686_DVS_VSEL_MASK,                       \
 349        .enable_reg     = MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10,     \
 350        .enable_mask    = MAX77686_OPMODE_MASK                          \
 351                        << MAX77686_OPMODE_BUCK234_SHIFT,               \
 352}
 353
 354static struct regulator_desc regulators[] = {
 355        regulator_desc_ldo1_low(1),
 356        regulator_desc_ldo_low(2),
 357        regulator_desc_ldo(3),
 358        regulator_desc_ldo(4),
 359        regulator_desc_ldo(5),
 360        regulator_desc_ldo_low(6),
 361        regulator_desc_ldo_low(7),
 362        regulator_desc_ldo_low(8),
 363        regulator_desc_ldo(9),
 364        regulator_desc_lpm_ldo(10),
 365        regulator_desc_lpm_ldo(11),
 366        regulator_desc_lpm_ldo(12),
 367        regulator_desc_ldo(13),
 368        regulator_desc_lpm_ldo(14),
 369        regulator_desc_ldo_low(15),
 370        regulator_desc_lpm_ldo(16),
 371        regulator_desc_ldo(17),
 372        regulator_desc_ldo(18),
 373        regulator_desc_ldo(19),
 374        regulator_desc_ldo(20),
 375        regulator_desc_ldo(21),
 376        regulator_desc_ldo(22),
 377        regulator_desc_ldo(23),
 378        regulator_desc_ldo(24),
 379        regulator_desc_ldo(25),
 380        regulator_desc_ldo(26),
 381        regulator_desc_buck1(1),
 382        regulator_desc_buck_dvs(2),
 383        regulator_desc_buck_dvs(3),
 384        regulator_desc_buck_dvs(4),
 385        regulator_desc_buck(5),
 386        regulator_desc_buck(6),
 387        regulator_desc_buck(7),
 388        regulator_desc_buck(8),
 389        regulator_desc_buck(9),
 390};
 391
 392#ifdef CONFIG_OF
 393static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev,
 394                                        struct max77686_platform_data *pdata)
 395{
 396        struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
 397        struct device_node *pmic_np, *regulators_np;
 398        struct max77686_regulator_data *rdata;
 399        struct of_regulator_match rmatch;
 400        unsigned int i;
 401
 402        pmic_np = iodev->dev->of_node;
 403        regulators_np = of_find_node_by_name(pmic_np, "voltage-regulators");
 404        if (!regulators_np) {
 405                dev_err(&pdev->dev, "could not find regulators sub-node\n");
 406                return -EINVAL;
 407        }
 408
 409        pdata->num_regulators = ARRAY_SIZE(regulators);
 410        rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) *
 411                             pdata->num_regulators, GFP_KERNEL);
 412        if (!rdata) {
 413                dev_err(&pdev->dev,
 414                        "could not allocate memory for regulator data\n");
 415                return -ENOMEM;
 416        }
 417
 418        for (i = 0; i < pdata->num_regulators; i++) {
 419                rmatch.name = regulators[i].name;
 420                rmatch.init_data = NULL;
 421                rmatch.of_node = NULL;
 422                of_regulator_match(&pdev->dev, regulators_np, &rmatch, 1);
 423                rdata[i].initdata = rmatch.init_data;
 424                rdata[i].of_node = rmatch.of_node;
 425        }
 426
 427        pdata->regulators = rdata;
 428
 429        return 0;
 430}
 431#else
 432static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev,
 433                                        struct max77686_platform_data *pdata)
 434{
 435        return 0;
 436}
 437#endif /* CONFIG_OF */
 438
 439static int max77686_pmic_probe(struct platform_device *pdev)
 440{
 441        struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
 442        struct max77686_platform_data *pdata = dev_get_platdata(iodev->dev);
 443        struct max77686_data *max77686;
 444        int i, ret = 0;
 445        struct regulator_config config = { };
 446
 447        dev_dbg(&pdev->dev, "%s\n", __func__);
 448
 449        if (!pdata) {
 450                dev_err(&pdev->dev, "no platform data found for regulator\n");
 451                return -ENODEV;
 452        }
 453
 454        if (iodev->dev->of_node) {
 455                ret = max77686_pmic_dt_parse_pdata(pdev, pdata);
 456                if (ret)
 457                        return ret;
 458        }
 459
 460        if (pdata->num_regulators != MAX77686_REGULATORS) {
 461                dev_err(&pdev->dev,
 462                        "Invalid initial data for regulator's initialiation\n");
 463                return -EINVAL;
 464        }
 465
 466        max77686 = devm_kzalloc(&pdev->dev, sizeof(struct max77686_data),
 467                                GFP_KERNEL);
 468        if (!max77686)
 469                return -ENOMEM;
 470
 471        config.dev = &pdev->dev;
 472        config.regmap = iodev->regmap;
 473        config.driver_data = max77686;
 474        platform_set_drvdata(pdev, max77686);
 475
 476        for (i = 0; i < MAX77686_REGULATORS; i++) {
 477                config.init_data = pdata->regulators[i].initdata;
 478                config.of_node = pdata->regulators[i].of_node;
 479
 480                max77686->opmode[i] = regulators[i].enable_mask;
 481                max77686->rdev[i] = regulator_register(&regulators[i], &config);
 482                if (IS_ERR(max77686->rdev[i])) {
 483                        ret = PTR_ERR(max77686->rdev[i]);
 484                        dev_err(&pdev->dev,
 485                                "regulator init failed for %d\n", i);
 486                        max77686->rdev[i] = NULL;
 487                        goto err;
 488                }
 489        }
 490
 491        return 0;
 492err:
 493        while (--i >= 0)
 494                regulator_unregister(max77686->rdev[i]);
 495        return ret;
 496}
 497
 498static int max77686_pmic_remove(struct platform_device *pdev)
 499{
 500        struct max77686_data *max77686 = platform_get_drvdata(pdev);
 501        int i;
 502
 503        for (i = 0; i < MAX77686_REGULATORS; i++)
 504                regulator_unregister(max77686->rdev[i]);
 505
 506        return 0;
 507}
 508
 509static const struct platform_device_id max77686_pmic_id[] = {
 510        {"max77686-pmic", 0},
 511        { },
 512};
 513MODULE_DEVICE_TABLE(platform, max77686_pmic_id);
 514
 515static struct platform_driver max77686_pmic_driver = {
 516        .driver = {
 517                .name = "max77686-pmic",
 518                .owner = THIS_MODULE,
 519        },
 520        .probe = max77686_pmic_probe,
 521        .remove = max77686_pmic_remove,
 522        .id_table = max77686_pmic_id,
 523};
 524
 525static int __init max77686_pmic_init(void)
 526{
 527        return platform_driver_register(&max77686_pmic_driver);
 528}
 529subsys_initcall(max77686_pmic_init);
 530
 531static void __exit max77686_pmic_cleanup(void)
 532{
 533        platform_driver_unregister(&max77686_pmic_driver);
 534}
 535module_exit(max77686_pmic_cleanup);
 536
 537MODULE_DESCRIPTION("MAXIM 77686 Regulator Driver");
 538MODULE_AUTHOR("Chiwoong Byun <woong.byun@samsung.com>");
 539MODULE_LICENSE("GPL");
 540
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.