drivers/mfd/88pm800.c

   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 */
  91 enum {
  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
 118 static const struct i2c_device_id pm80x_id_table[] = {
 119         {"88PM800", 0},
 120         {} /* NULL terminated */
 121 };
 122 MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
 123
 124 static 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
 133 static 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
 142 static 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
 151 static const 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
 160 static const struct mfd_cell regulator_devs[] = {
 161         {
 162          .name = "88pm80x-regulator",
 163          .id = -1,
 164         },
 165 };
 166
 167 static 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
 248 static 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
 310 out:
 311         dev_info(chip->dev, "pm800 device_gpadc_init: Failed!\n");
 312         return ret;
 313 }
 314
 315 static 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
 331 static 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
 351 static 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
 366 static 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
 395 out:
 396         return ret;
 397 }
 398
 399 static void device_irq_exit_800(struct pm80x_chip *chip)
 400 {
 401         regmap_del_irq_chip(chip->irq, chip->irq_data);
 402 }
 403
 404 static 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
 416 static 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
 464 out:
 465         return ret;
 466 }
 467
 468 static 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
 481 static 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;
 534 out_dev:
 535         mfd_remove_devices(chip->dev);
 536         device_irq_exit_800(chip);
 537 out:
 538         return ret;
 539 }
 540
 541 static 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_device_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
 588 err_device_init:
 589         pm800_pages_exit(chip);
 590 err_subchip_alloc:
 591         pm80x_deinit();
 592 out_init:
 593         return ret;
 594 }
 595
 596 static int pm800_remove(struct i2c_client *client)
 597 {
 598         struct pm80x_chip *chip = i2c_get_clientdata(client);
 599
 600         mfd_remove_devices(chip->dev);
 601         device_irq_exit_800(chip);
 602
 603         pm800_pages_exit(chip);
 604         pm80x_deinit();
 605
 606         return 0;
 607 }
 608
 609 static struct i2c_driver pm800_driver = {
 610         .driver = {
 611                 .name = "88PM800",
 612                 .pm = &pm80x_pm_ops,
 613                 },
 614         .probe = pm800_probe,
 615         .remove = pm800_remove,
 616         .id_table = pm80x_id_table,
 617 };
 618
 619 static int __init pm800_i2c_init(void)
 620 {
 621         return i2c_add_driver(&pm800_driver);
 622 }
 623 subsys_initcall(pm800_i2c_init);
 624
 625 static void __exit pm800_i2c_exit(void)
 626 {
 627         i2c_del_driver(&pm800_driver);
 628 }
 629 module_exit(pm800_i2c_exit);
 630
 631 MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM800");
 632 MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
 633 MODULE_LICENSE("GPL");