linux/drivers/mfd/88pm800.c
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   1/*
   2 * Base driver for Marvell 88PM800
   3 *
   4 * Copyright (C) 2012 Marvell International Ltd.
   5 * Haojian Zhuang <haojian.zhuang@marvell.com>
   6 * Joseph(Yossi) Hanin <yhanin@marvell.com>
   7 * Qiao Zhou <zhouqiao@marvell.com>
   8 *
   9 * This file is subject to the terms and conditions of the GNU General
  10 * Public License. See the file "COPYING" in the main directory of this
  11 * archive for more details.
  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
  23#include <linux/kernel.h>
  24#include <linux/module.h>
  25#include <linux/err.h>
  26#include <linux/i2c.h>
  27#include <linux/mfd/core.h>
  28#include <linux/mfd/88pm80x.h>
  29#include <linux/slab.h>
  30
  31/* Interrupt Registers */
  32#define PM800_INT_STATUS1               (0x05)
  33#define PM800_ONKEY_INT_STS1            (1 << 0)
  34#define PM800_EXTON_INT_STS1            (1 << 1)
  35#define PM800_CHG_INT_STS1                      (1 << 2)
  36#define PM800_BAT_INT_STS1                      (1 << 3)
  37#define PM800_RTC_INT_STS1                      (1 << 4)
  38#define PM800_CLASSD_OC_INT_STS1        (1 << 5)
  39
  40#define PM800_INT_STATUS2               (0x06)
  41#define PM800_VBAT_INT_STS2             (1 << 0)
  42#define PM800_VSYS_INT_STS2             (1 << 1)
  43#define PM800_VCHG_INT_STS2             (1 << 2)
  44#define PM800_TINT_INT_STS2             (1 << 3)
  45#define PM800_GPADC0_INT_STS2   (1 << 4)
  46#define PM800_TBAT_INT_STS2             (1 << 5)
  47#define PM800_GPADC2_INT_STS2   (1 << 6)
  48#define PM800_GPADC3_INT_STS2   (1 << 7)
  49
  50#define PM800_INT_STATUS3               (0x07)
  51
  52#define PM800_INT_STATUS4               (0x08)
  53#define PM800_GPIO0_INT_STS4            (1 << 0)
  54#define PM800_GPIO1_INT_STS4            (1 << 1)
  55#define PM800_GPIO2_INT_STS4            (1 << 2)
  56#define PM800_GPIO3_INT_STS4            (1 << 3)
  57#define PM800_GPIO4_INT_STS4            (1 << 4)
  58
  59#define PM800_INT_ENA_1         (0x09)
  60#define PM800_ONKEY_INT_ENA1            (1 << 0)
  61#define PM800_EXTON_INT_ENA1            (1 << 1)
  62#define PM800_CHG_INT_ENA1                      (1 << 2)
  63#define PM800_BAT_INT_ENA1                      (1 << 3)
  64#define PM800_RTC_INT_ENA1                      (1 << 4)
  65#define PM800_CLASSD_OC_INT_ENA1        (1 << 5)
  66
  67#define PM800_INT_ENA_2         (0x0A)
  68#define PM800_VBAT_INT_ENA2             (1 << 0)
  69#define PM800_VSYS_INT_ENA2             (1 << 1)
  70#define PM800_VCHG_INT_ENA2             (1 << 2)
  71#define PM800_TINT_INT_ENA2             (1 << 3)
  72
  73#define PM800_INT_ENA_3         (0x0B)
  74#define PM800_GPADC0_INT_ENA3           (1 << 0)
  75#define PM800_GPADC1_INT_ENA3           (1 << 1)
  76#define PM800_GPADC2_INT_ENA3           (1 << 2)
  77#define PM800_GPADC3_INT_ENA3           (1 << 3)
  78#define PM800_GPADC4_INT_ENA3           (1 << 4)
  79
  80#define PM800_INT_ENA_4         (0x0C)
  81#define PM800_GPIO0_INT_ENA4            (1 << 0)
  82#define PM800_GPIO1_INT_ENA4            (1 << 1)
  83#define PM800_GPIO2_INT_ENA4            (1 << 2)
  84#define PM800_GPIO3_INT_ENA4            (1 << 3)
  85#define PM800_GPIO4_INT_ENA4            (1 << 4)
  86
  87/* number of INT_ENA & INT_STATUS regs */
  88#define PM800_INT_REG_NUM                       (4)
  89
  90/* Interrupt Number in 88PM800 */
  91enum {
  92        PM800_IRQ_ONKEY,        /*EN1b0 *//*0 */
  93        PM800_IRQ_EXTON,        /*EN1b1 */
  94        PM800_IRQ_CHG,          /*EN1b2 */
  95        PM800_IRQ_BAT,          /*EN1b3 */
  96        PM800_IRQ_RTC,          /*EN1b4 */
  97        PM800_IRQ_CLASSD,       /*EN1b5 *//*5 */
  98        PM800_IRQ_VBAT,         /*EN2b0 */
  99        PM800_IRQ_VSYS,         /*EN2b1 */
 100        PM800_IRQ_VCHG,         /*EN2b2 */
 101        PM800_IRQ_TINT,         /*EN2b3 */
 102        PM800_IRQ_GPADC0,       /*EN3b0 *//*10 */
 103        PM800_IRQ_GPADC1,       /*EN3b1 */
 104        PM800_IRQ_GPADC2,       /*EN3b2 */
 105        PM800_IRQ_GPADC3,       /*EN3b3 */
 106        PM800_IRQ_GPADC4,       /*EN3b4 */
 107        PM800_IRQ_GPIO0,        /*EN4b0 *//*15 */
 108        PM800_IRQ_GPIO1,        /*EN4b1 */
 109        PM800_IRQ_GPIO2,        /*EN4b2 */
 110        PM800_IRQ_GPIO3,        /*EN4b3 */
 111        PM800_IRQ_GPIO4,        /*EN4b4 *//*19 */
 112        PM800_MAX_IRQ,
 113};
 114
 115/* PM800: generation identification number */
 116#define PM800_CHIP_GEN_ID_NUM   0x3
 117
 118static const struct i2c_device_id pm80x_id_table[] = {
 119        {"88PM800", 0},
 120        {} /* NULL terminated */
 121};
 122MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
 123
 124static struct resource rtc_resources[] = {
 125        {
 126         .name = "88pm80x-rtc",
 127         .start = PM800_IRQ_RTC,
 128         .end = PM800_IRQ_RTC,
 129         .flags = IORESOURCE_IRQ,
 130         },
 131};
 132
 133static struct mfd_cell rtc_devs[] = {
 134        {
 135         .name = "88pm80x-rtc",
 136         .num_resources = ARRAY_SIZE(rtc_resources),
 137         .resources = &rtc_resources[0],
 138         .id = -1,
 139         },
 140};
 141
 142static struct resource onkey_resources[] = {
 143        {
 144         .name = "88pm80x-onkey",
 145         .start = PM800_IRQ_ONKEY,
 146         .end = PM800_IRQ_ONKEY,
 147         .flags = IORESOURCE_IRQ,
 148         },
 149};
 150
 151static struct mfd_cell onkey_devs[] = {
 152        {
 153         .name = "88pm80x-onkey",
 154         .num_resources = 1,
 155         .resources = &onkey_resources[0],
 156         .id = -1,
 157         },
 158};
 159
 160static struct mfd_cell regulator_devs[] = {
 161        {
 162         .name = "88pm80x-regulator",
 163         .id = -1,
 164        },
 165};
 166
 167static const struct regmap_irq pm800_irqs[] = {
 168        /* INT0 */
 169        [PM800_IRQ_ONKEY] = {
 170                .mask = PM800_ONKEY_INT_ENA1,
 171        },
 172        [PM800_IRQ_EXTON] = {
 173                .mask = PM800_EXTON_INT_ENA1,
 174        },
 175        [PM800_IRQ_CHG] = {
 176                .mask = PM800_CHG_INT_ENA1,
 177        },
 178        [PM800_IRQ_BAT] = {
 179                .mask = PM800_BAT_INT_ENA1,
 180        },
 181        [PM800_IRQ_RTC] = {
 182                .mask = PM800_RTC_INT_ENA1,
 183        },
 184        [PM800_IRQ_CLASSD] = {
 185                .mask = PM800_CLASSD_OC_INT_ENA1,
 186        },
 187        /* INT1 */
 188        [PM800_IRQ_VBAT] = {
 189                .reg_offset = 1,
 190                .mask = PM800_VBAT_INT_ENA2,
 191        },
 192        [PM800_IRQ_VSYS] = {
 193                .reg_offset = 1,
 194                .mask = PM800_VSYS_INT_ENA2,
 195        },
 196        [PM800_IRQ_VCHG] = {
 197                .reg_offset = 1,
 198                .mask = PM800_VCHG_INT_ENA2,
 199        },
 200        [PM800_IRQ_TINT] = {
 201                .reg_offset = 1,
 202                .mask = PM800_TINT_INT_ENA2,
 203        },
 204        /* INT2 */
 205        [PM800_IRQ_GPADC0] = {
 206                .reg_offset = 2,
 207                .mask = PM800_GPADC0_INT_ENA3,
 208        },
 209        [PM800_IRQ_GPADC1] = {
 210                .reg_offset = 2,
 211                .mask = PM800_GPADC1_INT_ENA3,
 212        },
 213        [PM800_IRQ_GPADC2] = {
 214                .reg_offset = 2,
 215                .mask = PM800_GPADC2_INT_ENA3,
 216        },
 217        [PM800_IRQ_GPADC3] = {
 218                .reg_offset = 2,
 219                .mask = PM800_GPADC3_INT_ENA3,
 220        },
 221        [PM800_IRQ_GPADC4] = {
 222                .reg_offset = 2,
 223                .mask = PM800_GPADC4_INT_ENA3,
 224        },
 225        /* INT3 */
 226        [PM800_IRQ_GPIO0] = {
 227                .reg_offset = 3,
 228                .mask = PM800_GPIO0_INT_ENA4,
 229        },
 230        [PM800_IRQ_GPIO1] = {
 231                .reg_offset = 3,
 232                .mask = PM800_GPIO1_INT_ENA4,
 233        },
 234        [PM800_IRQ_GPIO2] = {
 235                .reg_offset = 3,
 236                .mask = PM800_GPIO2_INT_ENA4,
 237        },
 238        [PM800_IRQ_GPIO3] = {
 239                .reg_offset = 3,
 240                .mask = PM800_GPIO3_INT_ENA4,
 241        },
 242        [PM800_IRQ_GPIO4] = {
 243                .reg_offset = 3,
 244                .mask = PM800_GPIO4_INT_ENA4,
 245        },
 246};
 247
 248static int device_gpadc_init(struct pm80x_chip *chip,
 249                                       struct pm80x_platform_data *pdata)
 250{
 251        struct pm80x_subchip *subchip = chip->subchip;
 252        struct regmap *map = subchip->regmap_gpadc;
 253        int data = 0, mask = 0, ret = 0;
 254
 255        if (!map) {
 256                dev_warn(chip->dev,
 257                         "Warning: gpadc regmap is not available!\n");
 258                return -EINVAL;
 259        }
 260        /*
 261         * initialize GPADC without activating it turn on GPADC
 262         * measurments
 263         */
 264        ret = regmap_update_bits(map,
 265                                 PM800_GPADC_MISC_CONFIG2,
 266                                 PM800_GPADC_MISC_GPFSM_EN,
 267                                 PM800_GPADC_MISC_GPFSM_EN);
 268        if (ret < 0)
 269                goto out;
 270        /*
 271         * This function configures the ADC as requires for
 272         * CP implementation.CP does not "own" the ADC configuration
 273         * registers and relies on AP.
 274         * Reason: enable automatic ADC measurements needed
 275         * for CP to get VBAT and RF temperature readings.
 276         */
 277        ret = regmap_update_bits(map, PM800_GPADC_MEAS_EN1,
 278                                 PM800_MEAS_EN1_VBAT, PM800_MEAS_EN1_VBAT);
 279        if (ret < 0)
 280                goto out;
 281        ret = regmap_update_bits(map, PM800_GPADC_MEAS_EN2,
 282                                 (PM800_MEAS_EN2_RFTMP | PM800_MEAS_GP0_EN),
 283                                 (PM800_MEAS_EN2_RFTMP | PM800_MEAS_GP0_EN));
 284        if (ret < 0)
 285                goto out;
 286
 287        /*
 288         * the defult of PM800 is GPADC operates at 100Ks/s rate
 289         * and Number of GPADC slots with active current bias prior
 290         * to GPADC sampling = 1 slot for all GPADCs set for
 291         * Temprature mesurmants
 292         */
 293        mask = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN1 |
 294                PM800_GPADC_GP_BIAS_EN2 | PM800_GPADC_GP_BIAS_EN3);
 295
 296        if (pdata && (pdata->batt_det == 0))
 297                data = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN1 |
 298                        PM800_GPADC_GP_BIAS_EN2 | PM800_GPADC_GP_BIAS_EN3);
 299        else
 300                data = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN2 |
 301                        PM800_GPADC_GP_BIAS_EN3);
 302
 303        ret = regmap_update_bits(map, PM800_GP_BIAS_ENA1, mask, data);
 304        if (ret < 0)
 305                goto out;
 306
 307        dev_info(chip->dev, "pm800 device_gpadc_init: Done\n");
 308        return 0;
 309
 310out:
 311        dev_info(chip->dev, "pm800 device_gpadc_init: Failed!\n");
 312        return ret;
 313}
 314
 315static int device_onkey_init(struct pm80x_chip *chip,
 316                                struct pm80x_platform_data *pdata)
 317{
 318        int ret;
 319
 320        ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
 321                              ARRAY_SIZE(onkey_devs), &onkey_resources[0], 0,
 322                              NULL);
 323        if (ret) {
 324                dev_err(chip->dev, "Failed to add onkey subdev\n");
 325                return ret;
 326        }
 327
 328        return 0;
 329}
 330
 331static int device_rtc_init(struct pm80x_chip *chip,
 332                                struct pm80x_platform_data *pdata)
 333{
 334        int ret;
 335
 336        rtc_devs[0].platform_data = pdata->rtc;
 337        rtc_devs[0].pdata_size =
 338                        pdata->rtc ? sizeof(struct pm80x_rtc_pdata) : 0;
 339        ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
 340                              ARRAY_SIZE(rtc_devs), NULL, 0, NULL);
 341        if (ret) {
 342                dev_err(chip->dev, "Failed to add rtc subdev\n");
 343                return ret;
 344        }
 345
 346        return 0;
 347}
 348
 349static int device_regulator_init(struct pm80x_chip *chip,
 350                                           struct pm80x_platform_data *pdata)
 351{
 352        int ret;
 353
 354        ret = mfd_add_devices(chip->dev, 0, &regulator_devs[0],
 355                              ARRAY_SIZE(regulator_devs), NULL, 0, NULL);
 356        if (ret) {
 357                dev_err(chip->dev, "Failed to add regulator subdev\n");
 358                return ret;
 359        }
 360
 361        return 0;
 362}
 363
 364static int device_irq_init_800(struct pm80x_chip *chip)
 365{
 366        struct regmap *map = chip->regmap;
 367        unsigned long flags = IRQF_ONESHOT;
 368        int data, mask, ret = -EINVAL;
 369
 370        if (!map || !chip->irq) {
 371                dev_err(chip->dev, "incorrect parameters\n");
 372                return -EINVAL;
 373        }
 374
 375        /*
 376         * irq_mode defines the way of clearing interrupt. it's read-clear by
 377         * default.
 378         */
 379        mask =
 380            PM800_WAKEUP2_INV_INT | PM800_WAKEUP2_INT_CLEAR |
 381            PM800_WAKEUP2_INT_MASK;
 382
 383        data = PM800_WAKEUP2_INT_CLEAR;
 384        ret = regmap_update_bits(map, PM800_WAKEUP2, mask, data);
 385
 386        if (ret < 0)
 387                goto out;
 388
 389        ret =
 390            regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1,
 391                                chip->regmap_irq_chip, &chip->irq_data);
 392
 393out:
 394        return ret;
 395}
 396
 397static void device_irq_exit_800(struct pm80x_chip *chip)
 398{
 399        regmap_del_irq_chip(chip->irq, chip->irq_data);
 400}
 401
 402static struct regmap_irq_chip pm800_irq_chip = {
 403        .name = "88pm800",
 404        .irqs = pm800_irqs,
 405        .num_irqs = ARRAY_SIZE(pm800_irqs),
 406
 407        .num_regs = 4,
 408        .status_base = PM800_INT_STATUS1,
 409        .mask_base = PM800_INT_ENA_1,
 410        .ack_base = PM800_INT_STATUS1,
 411        .mask_invert = 1,
 412};
 413
 414static int pm800_pages_init(struct pm80x_chip *chip)
 415{
 416        struct pm80x_subchip *subchip;
 417        struct i2c_client *client = chip->client;
 418
 419        int ret = 0;
 420
 421        subchip = chip->subchip;
 422        if (!subchip || !subchip->power_page_addr || !subchip->gpadc_page_addr)
 423                return -ENODEV;
 424
 425        /* PM800 block power page */
 426        subchip->power_page = i2c_new_dummy(client->adapter,
 427                                            subchip->power_page_addr);
 428        if (subchip->power_page == NULL) {
 429                ret = -ENODEV;
 430                goto out;
 431        }
 432
 433        subchip->regmap_power = devm_regmap_init_i2c(subchip->power_page,
 434                                                     &pm80x_regmap_config);
 435        if (IS_ERR(subchip->regmap_power)) {
 436                ret = PTR_ERR(subchip->regmap_power);
 437                dev_err(chip->dev,
 438                        "Failed to allocate regmap_power: %d\n", ret);
 439                goto out;
 440        }
 441
 442        i2c_set_clientdata(subchip->power_page, chip);
 443
 444        /* PM800 block GPADC */
 445        subchip->gpadc_page = i2c_new_dummy(client->adapter,
 446                                            subchip->gpadc_page_addr);
 447        if (subchip->gpadc_page == NULL) {
 448                ret = -ENODEV;
 449                goto out;
 450        }
 451
 452        subchip->regmap_gpadc = devm_regmap_init_i2c(subchip->gpadc_page,
 453                                                     &pm80x_regmap_config);
 454        if (IS_ERR(subchip->regmap_gpadc)) {
 455                ret = PTR_ERR(subchip->regmap_gpadc);
 456                dev_err(chip->dev,
 457                        "Failed to allocate regmap_gpadc: %d\n", ret);
 458                goto out;
 459        }
 460        i2c_set_clientdata(subchip->gpadc_page, chip);
 461
 462out:
 463        return ret;
 464}
 465
 466static void pm800_pages_exit(struct pm80x_chip *chip)
 467{
 468        struct pm80x_subchip *subchip;
 469
 470        subchip = chip->subchip;
 471
 472        if (subchip && subchip->power_page)
 473                i2c_unregister_device(subchip->power_page);
 474
 475        if (subchip && subchip->gpadc_page)
 476                i2c_unregister_device(subchip->gpadc_page);
 477}
 478
 479static int device_800_init(struct pm80x_chip *chip,
 480                                     struct pm80x_platform_data *pdata)
 481{
 482        int ret;
 483        unsigned int val;
 484
 485        /*
 486         * alarm wake up bit will be clear in device_irq_init(),
 487         * read before that
 488         */
 489        ret = regmap_read(chip->regmap, PM800_RTC_CONTROL, &val);
 490        if (ret < 0) {
 491                dev_err(chip->dev, "Failed to read RTC register: %d\n", ret);
 492                goto out;
 493        }
 494        if (val & PM800_ALARM_WAKEUP) {
 495                if (pdata && pdata->rtc)
 496                        pdata->rtc->rtc_wakeup = 1;
 497        }
 498
 499        ret = device_gpadc_init(chip, pdata);
 500        if (ret < 0) {
 501                dev_err(chip->dev, "[%s]Failed to init gpadc\n", __func__);
 502                goto out;
 503        }
 504
 505        chip->regmap_irq_chip = &pm800_irq_chip;
 506
 507        ret = device_irq_init_800(chip);
 508        if (ret < 0) {
 509                dev_err(chip->dev, "[%s]Failed to init pm800 irq\n", __func__);
 510                goto out;
 511        }
 512
 513        ret = device_onkey_init(chip, pdata);
 514        if (ret) {
 515                dev_err(chip->dev, "Failed to add onkey subdev\n");
 516                goto out_dev;
 517        }
 518
 519        ret = device_rtc_init(chip, pdata);
 520        if (ret) {
 521                dev_err(chip->dev, "Failed to add rtc subdev\n");
 522                goto out;
 523        }
 524
 525        ret = device_regulator_init(chip, pdata);
 526        if (ret) {
 527                dev_err(chip->dev, "Failed to add regulators subdev\n");
 528                goto out;
 529        }
 530
 531        return 0;
 532out_dev:
 533        mfd_remove_devices(chip->dev);
 534        device_irq_exit_800(chip);
 535out:
 536        return ret;
 537}
 538
 539static int pm800_probe(struct i2c_client *client,
 540                                 const struct i2c_device_id *id)
 541{
 542        int ret = 0;
 543        struct pm80x_chip *chip;
 544        struct pm80x_platform_data *pdata = client->dev.platform_data;
 545        struct pm80x_subchip *subchip;
 546
 547        ret = pm80x_init(client);
 548        if (ret) {
 549                dev_err(&client->dev, "pm800_init fail\n");
 550                goto out_init;
 551        }
 552
 553        chip = i2c_get_clientdata(client);
 554
 555        /* init subchip for PM800 */
 556        subchip =
 557            devm_kzalloc(&client->dev, sizeof(struct pm80x_subchip),
 558                         GFP_KERNEL);
 559        if (!subchip) {
 560                ret = -ENOMEM;
 561                goto err_subchip_alloc;
 562        }
 563
 564        /* pm800 has 2 addtional pages to support power and gpadc. */
 565        subchip->power_page_addr = client->addr + 1;
 566        subchip->gpadc_page_addr = client->addr + 2;
 567        chip->subchip = subchip;
 568
 569        ret = pm800_pages_init(chip);
 570        if (ret) {
 571                dev_err(&client->dev, "pm800_pages_init failed!\n");
 572                goto err_page_init;
 573        }
 574
 575        ret = device_800_init(chip, pdata);
 576        if (ret) {
 577                dev_err(chip->dev, "Failed to initialize 88pm800 devices\n");
 578                goto err_device_init;
 579        }
 580
 581        if (pdata->plat_config)
 582                pdata->plat_config(chip, pdata);
 583
 584        return 0;
 585
 586err_device_init:
 587        pm800_pages_exit(chip);
 588err_page_init:
 589err_subchip_alloc:
 590        pm80x_deinit();
 591out_init:
 592        return ret;
 593}
 594
 595static int pm800_remove(struct i2c_client *client)
 596{
 597        struct pm80x_chip *chip = i2c_get_clientdata(client);
 598
 599        mfd_remove_devices(chip->dev);
 600        device_irq_exit_800(chip);
 601
 602        pm800_pages_exit(chip);
 603        pm80x_deinit();
 604
 605        return 0;
 606}
 607
 608static struct i2c_driver pm800_driver = {
 609        .driver = {
 610                .name = "88PM800",
 611                .owner = THIS_MODULE,
 612                .pm = &pm80x_pm_ops,
 613                },
 614        .probe = pm800_probe,
 615        .remove = pm800_remove,
 616        .id_table = pm80x_id_table,
 617};
 618
 619static int __init pm800_i2c_init(void)
 620{
 621        return i2c_add_driver(&pm800_driver);
 622}
 623subsys_initcall(pm800_i2c_init);
 624
 625static void __exit pm800_i2c_exit(void)
 626{
 627        i2c_del_driver(&pm800_driver);
 628}
 629module_exit(pm800_i2c_exit);
 630
 631MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM800");
 632MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
 633MODULE_LICENSE("GPL");
 634
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