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        if (pdata) {
 337                rtc_devs[0].platform_data = pdata->rtc;
 338                rtc_devs[0].pdata_size =
 339                                pdata->rtc ? sizeof(struct pm80x_rtc_pdata) : 0;
 340        }
 341        ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
 342                              ARRAY_SIZE(rtc_devs), NULL, 0, NULL);
 343        if (ret) {
 344                dev_err(chip->dev, "Failed to add rtc subdev\n");
 345                return ret;
 346        }
 347
 348        return 0;
 349}
 350
 351static int device_regulator_init(struct pm80x_chip *chip,
 352                                           struct pm80x_platform_data *pdata)
 353{
 354        int ret;
 355
 356        ret = mfd_add_devices(chip->dev, 0, &regulator_devs[0],
 357                              ARRAY_SIZE(regulator_devs), NULL, 0, NULL);
 358        if (ret) {
 359                dev_err(chip->dev, "Failed to add regulator subdev\n");
 360                return ret;
 361        }
 362
 363        return 0;
 364}
 365
 366static int device_irq_init_800(struct pm80x_chip *chip)
 367{
 368        struct regmap *map = chip->regmap;
 369        unsigned long flags = IRQF_ONESHOT;
 370        int data, mask, ret = -EINVAL;
 371
 372        if (!map || !chip->irq) {
 373                dev_err(chip->dev, "incorrect parameters\n");
 374                return -EINVAL;
 375        }
 376
 377        /*
 378         * irq_mode defines the way of clearing interrupt. it's read-clear by
 379         * default.
 380         */
 381        mask =
 382            PM800_WAKEUP2_INV_INT | PM800_WAKEUP2_INT_CLEAR |
 383            PM800_WAKEUP2_INT_MASK;
 384
 385        data = PM800_WAKEUP2_INT_CLEAR;
 386        ret = regmap_update_bits(map, PM800_WAKEUP2, mask, data);
 387
 388        if (ret < 0)
 389                goto out;
 390
 391        ret =
 392            regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1,
 393                                chip->regmap_irq_chip, &chip->irq_data);
 394
 395out:
 396        return ret;
 397}
 398
 399static void device_irq_exit_800(struct pm80x_chip *chip)
 400{
 401        regmap_del_irq_chip(chip->irq, chip->irq_data);
 402}
 403
 404static struct regmap_irq_chip pm800_irq_chip = {
 405        .name = "88pm800",
 406        .irqs = pm800_irqs,
 407        .num_irqs = ARRAY_SIZE(pm800_irqs),
 408
 409        .num_regs = 4,
 410        .status_base = PM800_INT_STATUS1,
 411        .mask_base = PM800_INT_ENA_1,
 412        .ack_base = PM800_INT_STATUS1,
 413        .mask_invert = 1,
 414};
 415
 416static int pm800_pages_init(struct pm80x_chip *chip)
 417{
 418        struct pm80x_subchip *subchip;
 419        struct i2c_client *client = chip->client;
 420
 421        int ret = 0;
 422
 423        subchip = chip->subchip;
 424        if (!subchip || !subchip->power_page_addr || !subchip->gpadc_page_addr)
 425                return -ENODEV;
 426
 427        /* PM800 block power page */
 428        subchip->power_page = i2c_new_dummy(client->adapter,
 429                                            subchip->power_page_addr);
 430        if (subchip->power_page == NULL) {
 431                ret = -ENODEV;
 432                goto out;
 433        }
 434
 435        subchip->regmap_power = devm_regmap_init_i2c(subchip->power_page,
 436                                                     &pm80x_regmap_config);
 437        if (IS_ERR(subchip->regmap_power)) {
 438                ret = PTR_ERR(subchip->regmap_power);
 439                dev_err(chip->dev,
 440                        "Failed to allocate regmap_power: %d\n", ret);
 441                goto out;
 442        }
 443
 444        i2c_set_clientdata(subchip->power_page, chip);
 445
 446        /* PM800 block GPADC */
 447        subchip->gpadc_page = i2c_new_dummy(client->adapter,
 448                                            subchip->gpadc_page_addr);
 449        if (subchip->gpadc_page == NULL) {
 450                ret = -ENODEV;
 451                goto out;
 452        }
 453
 454        subchip->regmap_gpadc = devm_regmap_init_i2c(subchip->gpadc_page,
 455                                                     &pm80x_regmap_config);
 456        if (IS_ERR(subchip->regmap_gpadc)) {
 457                ret = PTR_ERR(subchip->regmap_gpadc);
 458                dev_err(chip->dev,
 459                        "Failed to allocate regmap_gpadc: %d\n", ret);
 460                goto out;
 461        }
 462        i2c_set_clientdata(subchip->gpadc_page, chip);
 463
 464out:
 465        return ret;
 466}
 467
 468static void pm800_pages_exit(struct pm80x_chip *chip)
 469{
 470        struct pm80x_subchip *subchip;
 471
 472        subchip = chip->subchip;
 473
 474        if (subchip && subchip->power_page)
 475                i2c_unregister_device(subchip->power_page);
 476
 477        if (subchip && subchip->gpadc_page)
 478                i2c_unregister_device(subchip->gpadc_page);
 479}
 480
 481static int device_800_init(struct pm80x_chip *chip,
 482                                     struct pm80x_platform_data *pdata)
 483{
 484        int ret;
 485        unsigned int val;
 486
 487        /*
 488         * alarm wake up bit will be clear in device_irq_init(),
 489         * read before that
 490         */
 491        ret = regmap_read(chip->regmap, PM800_RTC_CONTROL, &val);
 492        if (ret < 0) {
 493                dev_err(chip->dev, "Failed to read RTC register: %d\n", ret);
 494                goto out;
 495        }
 496        if (val & PM800_ALARM_WAKEUP) {
 497                if (pdata && pdata->rtc)
 498                        pdata->rtc->rtc_wakeup = 1;
 499        }
 500
 501        ret = device_gpadc_init(chip, pdata);
 502        if (ret < 0) {
 503                dev_err(chip->dev, "[%s]Failed to init gpadc\n", __func__);
 504                goto out;
 505        }
 506
 507        chip->regmap_irq_chip = &pm800_irq_chip;
 508
 509        ret = device_irq_init_800(chip);
 510        if (ret < 0) {
 511                dev_err(chip->dev, "[%s]Failed to init pm800 irq\n", __func__);
 512                goto out;
 513        }
 514
 515        ret = device_onkey_init(chip, pdata);
 516        if (ret) {
 517                dev_err(chip->dev, "Failed to add onkey subdev\n");
 518                goto out_dev;
 519        }
 520
 521        ret = device_rtc_init(chip, pdata);
 522        if (ret) {
 523                dev_err(chip->dev, "Failed to add rtc subdev\n");
 524                goto out;
 525        }
 526
 527        ret = device_regulator_init(chip, pdata);
 528        if (ret) {
 529                dev_err(chip->dev, "Failed to add regulators subdev\n");
 530                goto out;
 531        }
 532
 533        return 0;
 534out_dev:
 535        mfd_remove_devices(chip->dev);
 536        device_irq_exit_800(chip);
 537out:
 538        return ret;
 539}
 540
 541static int pm800_probe(struct i2c_client *client,
 542                                 const struct i2c_device_id *id)
 543{
 544        int ret = 0;
 545        struct pm80x_chip *chip;
 546        struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev);
 547        struct pm80x_subchip *subchip;
 548
 549        ret = pm80x_init(client);
 550        if (ret) {
 551                dev_err(&client->dev, "pm800_init fail\n");
 552                goto out_init;
 553        }
 554
 555        chip = i2c_get_clientdata(client);
 556
 557        /* init subchip for PM800 */
 558        subchip =
 559            devm_kzalloc(&client->dev, sizeof(struct pm80x_subchip),
 560                         GFP_KERNEL);
 561        if (!subchip) {
 562                ret = -ENOMEM;
 563                goto err_subchip_alloc;
 564        }
 565
 566        /* pm800 has 2 addtional pages to support power and gpadc. */
 567        subchip->power_page_addr = client->addr + 1;
 568        subchip->gpadc_page_addr = client->addr + 2;
 569        chip->subchip = subchip;
 570
 571        ret = pm800_pages_init(chip);
 572        if (ret) {
 573                dev_err(&client->dev, "pm800_pages_init failed!\n");
 574                goto err_page_init;
 575        }
 576
 577        ret = device_800_init(chip, pdata);
 578        if (ret) {
 579                dev_err(chip->dev, "Failed to initialize 88pm800 devices\n");
 580                goto err_device_init;
 581        }
 582
 583        if (pdata && pdata->plat_config)
 584                pdata->plat_config(chip, pdata);
 585
 586        return 0;
 587
 588err_device_init:
 589        pm800_pages_exit(chip);
 590err_page_init:
 591err_subchip_alloc:
 592        pm80x_deinit();
 593out_init:
 594        return ret;
 595}
 596
 597static int pm800_remove(struct i2c_client *client)
 598{
 599        struct pm80x_chip *chip = i2c_get_clientdata(client);
 600
 601        mfd_remove_devices(chip->dev);
 602        device_irq_exit_800(chip);
 603
 604        pm800_pages_exit(chip);
 605        pm80x_deinit();
 606
 607        return 0;
 608}
 609
 610static struct i2c_driver pm800_driver = {
 611        .driver = {
 612                .name = "88PM800",
 613                .owner = THIS_MODULE,
 614                .pm = &pm80x_pm_ops,
 615                },
 616        .probe = pm800_probe,
 617        .remove = pm800_remove,
 618        .id_table = pm80x_id_table,
 619};
 620
 621static int __init pm800_i2c_init(void)
 622{
 623        return i2c_add_driver(&pm800_driver);
 624}
 625subsys_initcall(pm800_i2c_init);
 626
 627static void __exit pm800_i2c_exit(void)
 628{
 629        i2c_del_driver(&pm800_driver);
 630}
 631module_exit(pm800_i2c_exit);
 632
 633MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM800");
 634MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
 635MODULE_LICENSE("GPL");
 636
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