drivers/mfd/88pm860x-core.c

   1 /*
   2  * Base driver for Marvell 88PM8607
   3  *
   4  * Copyright (C) 2009 Marvell International Ltd.
   5  *      Haojian Zhuang <haojian.zhuang@marvell.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/err.h>
  15 #include <linux/i2c.h>
  16 #include <linux/irq.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/irqdomain.h>
  19 #include <linux/of.h>
  20 #include <linux/of_platform.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/regmap.h>
  23 #include <linux/slab.h>
  24 #include <linux/mfd/core.h>
  25 #include <linux/mfd/88pm860x.h>
  26 #include <linux/regulator/machine.h>
  27 #include <linux/power/charger-manager.h>
  28
  29 #define INT_STATUS_NUM                  3
  30
  31 static struct resource bk0_resources[] = {
  32         {2, 2, "duty cycle", IORESOURCE_REG, },
  33         {3, 3, "always on",  IORESOURCE_REG, },
  34         {3, 3, "current",    IORESOURCE_REG, },
  35 };
  36 static struct resource bk1_resources[] = {
  37         {4, 4, "duty cycle", IORESOURCE_REG, },
  38         {5, 5, "always on",  IORESOURCE_REG, },
  39         {5, 5, "current",    IORESOURCE_REG, },
  40 };
  41 static struct resource bk2_resources[] = {
  42         {6, 6, "duty cycle", IORESOURCE_REG, },
  43         {7, 7, "always on",  IORESOURCE_REG, },
  44         {5, 5, "current",    IORESOURCE_REG, },
  45 };
  46
  47 static struct resource led0_resources[] = {
  48         /* RGB1 Red LED */
  49         {0xd, 0xd, "control", IORESOURCE_REG, },
  50         {0xc, 0xc, "blink",   IORESOURCE_REG, },
  51 };
  52 static struct resource led1_resources[] = {
  53         /* RGB1 Green LED */
  54         {0xe, 0xe, "control", IORESOURCE_REG, },
  55         {0xc, 0xc, "blink",   IORESOURCE_REG, },
  56 };
  57 static struct resource led2_resources[] = {
  58         /* RGB1 Blue LED */
  59         {0xf, 0xf, "control", IORESOURCE_REG, },
  60         {0xc, 0xc, "blink",   IORESOURCE_REG, },
  61 };
  62 static struct resource led3_resources[] = {
  63         /* RGB2 Red LED */
  64         {0x9, 0x9, "control", IORESOURCE_REG, },
  65         {0x8, 0x8, "blink",   IORESOURCE_REG, },
  66 };
  67 static struct resource led4_resources[] = {
  68         /* RGB2 Green LED */
  69         {0xa, 0xa, "control", IORESOURCE_REG, },
  70         {0x8, 0x8, "blink",   IORESOURCE_REG, },
  71 };
  72 static struct resource led5_resources[] = {
  73         /* RGB2 Blue LED */
  74         {0xb, 0xb, "control", IORESOURCE_REG, },
  75         {0x8, 0x8, "blink",   IORESOURCE_REG, },
  76 };
  77
  78 static struct resource buck1_resources[] = {
  79         {0x24, 0x24, "buck set", IORESOURCE_REG, },
  80 };
  81 static struct resource buck2_resources[] = {
  82         {0x25, 0x25, "buck set", IORESOURCE_REG, },
  83 };
  84 static struct resource buck3_resources[] = {
  85         {0x26, 0x26, "buck set", IORESOURCE_REG, },
  86 };
  87 static struct resource ldo1_resources[] = {
  88         {0x10, 0x10, "ldo set", IORESOURCE_REG, },
  89 };
  90 static struct resource ldo2_resources[] = {
  91         {0x11, 0x11, "ldo set", IORESOURCE_REG, },
  92 };
  93 static struct resource ldo3_resources[] = {
  94         {0x12, 0x12, "ldo set", IORESOURCE_REG, },
  95 };
  96 static struct resource ldo4_resources[] = {
  97         {0x13, 0x13, "ldo set", IORESOURCE_REG, },
  98 };
  99 static struct resource ldo5_resources[] = {
 100         {0x14, 0x14, "ldo set", IORESOURCE_REG, },
 101 };
 102 static struct resource ldo6_resources[] = {
 103         {0x15, 0x15, "ldo set", IORESOURCE_REG, },
 104 };
 105 static struct resource ldo7_resources[] = {
 106         {0x16, 0x16, "ldo set", IORESOURCE_REG, },
 107 };
 108 static struct resource ldo8_resources[] = {
 109         {0x17, 0x17, "ldo set", IORESOURCE_REG, },
 110 };
 111 static struct resource ldo9_resources[] = {
 112         {0x18, 0x18, "ldo set", IORESOURCE_REG, },
 113 };
 114 static struct resource ldo10_resources[] = {
 115         {0x19, 0x19, "ldo set", IORESOURCE_REG, },
 116 };
 117 static struct resource ldo12_resources[] = {
 118         {0x1a, 0x1a, "ldo set", IORESOURCE_REG, },
 119 };
 120 static struct resource ldo_vibrator_resources[] = {
 121         {0x28, 0x28, "ldo set", IORESOURCE_REG, },
 122 };
 123 static struct resource ldo14_resources[] = {
 124         {0x1b, 0x1b, "ldo set", IORESOURCE_REG, },
 125 };
 126
 127 static struct resource touch_resources[] = {
 128         {PM8607_IRQ_PEN, PM8607_IRQ_PEN, "touch", IORESOURCE_IRQ,},
 129 };
 130
 131 static struct resource onkey_resources[] = {
 132         {PM8607_IRQ_ONKEY, PM8607_IRQ_ONKEY, "onkey", IORESOURCE_IRQ,},
 133 };
 134
 135 static struct resource codec_resources[] = {
 136         /* Headset microphone insertion or removal */
 137         {PM8607_IRQ_MICIN,   PM8607_IRQ_MICIN,   "micin",   IORESOURCE_IRQ,},
 138         /* Hook-switch press or release */
 139         {PM8607_IRQ_HOOK,    PM8607_IRQ_HOOK,    "hook",    IORESOURCE_IRQ,},
 140         /* Headset insertion or removal */
 141         {PM8607_IRQ_HEADSET, PM8607_IRQ_HEADSET, "headset", IORESOURCE_IRQ,},
 142         /* Audio short */
 143         {PM8607_IRQ_AUDIO_SHORT, PM8607_IRQ_AUDIO_SHORT, "audio-short", IORESOURCE_IRQ,},
 144 };
 145
 146 static struct resource battery_resources[] = {
 147         {PM8607_IRQ_CC,  PM8607_IRQ_CC,  "columb counter", IORESOURCE_IRQ,},
 148         {PM8607_IRQ_BAT, PM8607_IRQ_BAT, "battery",        IORESOURCE_IRQ,},
 149 };
 150
 151 static struct resource charger_resources[] = {
 152         {PM8607_IRQ_CHG,  PM8607_IRQ_CHG,  "charger detect",  IORESOURCE_IRQ,},
 153         {PM8607_IRQ_CHG_DONE,  PM8607_IRQ_CHG_DONE,  "charging done",       IORESOURCE_IRQ,},
 154         {PM8607_IRQ_CHG_FAIL,  PM8607_IRQ_CHG_FAIL,  "charging timeout",    IORESOURCE_IRQ,},
 155         {PM8607_IRQ_CHG_FAULT, PM8607_IRQ_CHG_FAULT, "charging fault",      IORESOURCE_IRQ,},
 156         {PM8607_IRQ_GPADC1,    PM8607_IRQ_GPADC1,    "battery temperature", IORESOURCE_IRQ,},
 157         {PM8607_IRQ_VBAT, PM8607_IRQ_VBAT, "battery voltage", IORESOURCE_IRQ,},
 158         {PM8607_IRQ_VCHG, PM8607_IRQ_VCHG, "vchg voltage",    IORESOURCE_IRQ,},
 159 };
 160
 161 static struct resource rtc_resources[] = {
 162         {PM8607_IRQ_RTC, PM8607_IRQ_RTC, "rtc", IORESOURCE_IRQ,},
 163 };
 164
 165 static struct mfd_cell bk_devs[] = {
 166         {
 167                 .name = "88pm860x-backlight",
 168                 .id = 0,
 169                 .num_resources = ARRAY_SIZE(bk0_resources),
 170                 .resources = bk0_resources,
 171         }, {
 172                 .name = "88pm860x-backlight",
 173                 .id = 1,
 174                 .num_resources = ARRAY_SIZE(bk1_resources),
 175                 .resources = bk1_resources,
 176         }, {
 177                 .name = "88pm860x-backlight",
 178                 .id = 2,
 179                 .num_resources = ARRAY_SIZE(bk2_resources),
 180                 .resources = bk2_resources,
 181         },
 182 };
 183
 184 static struct mfd_cell led_devs[] = {
 185         {
 186                 .name = "88pm860x-led",
 187                 .id = 0,
 188                 .num_resources = ARRAY_SIZE(led0_resources),
 189                 .resources = led0_resources,
 190         }, {
 191                 .name = "88pm860x-led",
 192                 .id = 1,
 193                 .num_resources = ARRAY_SIZE(led1_resources),
 194                 .resources = led1_resources,
 195         }, {
 196                 .name = "88pm860x-led",
 197                 .id = 2,
 198                 .num_resources = ARRAY_SIZE(led2_resources),
 199                 .resources = led2_resources,
 200         }, {
 201                 .name = "88pm860x-led",
 202                 .id = 3,
 203                 .num_resources = ARRAY_SIZE(led3_resources),
 204                 .resources = led3_resources,
 205         }, {
 206                 .name = "88pm860x-led",
 207                 .id = 4,
 208                 .num_resources = ARRAY_SIZE(led4_resources),
 209                 .resources = led4_resources,
 210         }, {
 211                 .name = "88pm860x-led",
 212                 .id = 5,
 213                 .num_resources = ARRAY_SIZE(led5_resources),
 214                 .resources = led5_resources,
 215         },
 216 };
 217
 218 static struct mfd_cell reg_devs[] = {
 219         {
 220                 .name = "88pm860x-regulator",
 221                 .id = 0,
 222                 .num_resources = ARRAY_SIZE(buck1_resources),
 223                 .resources = buck1_resources,
 224         }, {
 225                 .name = "88pm860x-regulator",
 226                 .id = 1,
 227                 .num_resources = ARRAY_SIZE(buck2_resources),
 228                 .resources = buck2_resources,
 229         }, {
 230                 .name = "88pm860x-regulator",
 231                 .id = 2,
 232                 .num_resources = ARRAY_SIZE(buck3_resources),
 233                 .resources = buck3_resources,
 234         }, {
 235                 .name = "88pm860x-regulator",
 236                 .id = 3,
 237                 .num_resources = ARRAY_SIZE(ldo1_resources),
 238                 .resources = ldo1_resources,
 239         }, {
 240                 .name = "88pm860x-regulator",
 241                 .id = 4,
 242                 .num_resources = ARRAY_SIZE(ldo2_resources),
 243                 .resources = ldo2_resources,
 244         }, {
 245                 .name = "88pm860x-regulator",
 246                 .id = 5,
 247                 .num_resources = ARRAY_SIZE(ldo3_resources),
 248                 .resources = ldo3_resources,
 249         }, {
 250                 .name = "88pm860x-regulator",
 251                 .id = 6,
 252                 .num_resources = ARRAY_SIZE(ldo4_resources),
 253                 .resources = ldo4_resources,
 254         }, {
 255                 .name = "88pm860x-regulator",
 256                 .id = 7,
 257                 .num_resources = ARRAY_SIZE(ldo5_resources),
 258                 .resources = ldo5_resources,
 259         }, {
 260                 .name = "88pm860x-regulator",
 261                 .id = 8,
 262                 .num_resources = ARRAY_SIZE(ldo6_resources),
 263                 .resources = ldo6_resources,
 264         }, {
 265                 .name = "88pm860x-regulator",
 266                 .id = 9,
 267                 .num_resources = ARRAY_SIZE(ldo7_resources),
 268                 .resources = ldo7_resources,
 269         }, {
 270                 .name = "88pm860x-regulator",
 271                 .id = 10,
 272                 .num_resources = ARRAY_SIZE(ldo8_resources),
 273                 .resources = ldo8_resources,
 274         }, {
 275                 .name = "88pm860x-regulator",
 276                 .id = 11,
 277                 .num_resources = ARRAY_SIZE(ldo9_resources),
 278                 .resources = ldo9_resources,
 279         }, {
 280                 .name = "88pm860x-regulator",
 281                 .id = 12,
 282                 .num_resources = ARRAY_SIZE(ldo10_resources),
 283                 .resources = ldo10_resources,
 284         }, {
 285                 .name = "88pm860x-regulator",
 286                 .id = 13,
 287                 .num_resources = ARRAY_SIZE(ldo12_resources),
 288                 .resources = ldo12_resources,
 289         }, {
 290                 .name = "88pm860x-regulator",
 291                 .id = 14,
 292                 .num_resources = ARRAY_SIZE(ldo_vibrator_resources),
 293                 .resources = ldo_vibrator_resources,
 294         }, {
 295                 .name = "88pm860x-regulator",
 296                 .id = 15,
 297                 .num_resources = ARRAY_SIZE(ldo14_resources),
 298                 .resources = ldo14_resources,
 299         },
 300 };
 301
 302 static struct mfd_cell touch_devs[] = {
 303         {"88pm860x-touch", -1,},
 304 };
 305
 306 static struct mfd_cell onkey_devs[] = {
 307         {"88pm860x-onkey", -1,},
 308 };
 309
 310 static struct mfd_cell codec_devs[] = {
 311         {"88pm860x-codec", -1,},
 312 };
 313
 314 static struct regulator_consumer_supply preg_supply[] = {
 315         REGULATOR_SUPPLY("preg", "charger-manager"),
 316 };
 317
 318 static struct regulator_init_data preg_init_data = {
 319         .num_consumer_supplies  = ARRAY_SIZE(preg_supply),
 320         .consumer_supplies      = &preg_supply[0],
 321 };
 322
 323 static struct charger_regulator chg_desc_regulator_data[] = {
 324         { .regulator_name = "preg", },
 325 };
 326
 327 static struct mfd_cell power_devs[] = {
 328         {"88pm860x-battery", -1,},
 329         {"88pm860x-charger", -1,},
 330         {"88pm860x-preg",    -1,},
 331         {"charger-manager", -1,},
 332 };
 333
 334 static struct mfd_cell rtc_devs[] = {
 335         {"88pm860x-rtc", -1,},
 336 };
 337
 338
 339 struct pm860x_irq_data {
 340         int     reg;
 341         int     mask_reg;
 342         int     enable;         /* enable or not */
 343         int     offs;           /* bit offset in mask register */
 344 };
 345
 346 static struct pm860x_irq_data pm860x_irqs[] = {
 347         [PM8607_IRQ_ONKEY] = {
 348                 .reg            = PM8607_INT_STATUS1,
 349                 .mask_reg       = PM8607_INT_MASK_1,
 350                 .offs           = 1 << 0,
 351         },
 352         [PM8607_IRQ_EXTON] = {
 353                 .reg            = PM8607_INT_STATUS1,
 354                 .mask_reg       = PM8607_INT_MASK_1,
 355                 .offs           = 1 << 1,
 356         },
 357         [PM8607_IRQ_CHG] = {
 358                 .reg            = PM8607_INT_STATUS1,
 359                 .mask_reg       = PM8607_INT_MASK_1,
 360                 .offs           = 1 << 2,
 361         },
 362         [PM8607_IRQ_BAT] = {
 363                 .reg            = PM8607_INT_STATUS1,
 364                 .mask_reg       = PM8607_INT_MASK_1,
 365                 .offs           = 1 << 3,
 366         },
 367         [PM8607_IRQ_RTC] = {
 368                 .reg            = PM8607_INT_STATUS1,
 369                 .mask_reg       = PM8607_INT_MASK_1,
 370                 .offs           = 1 << 4,
 371         },
 372         [PM8607_IRQ_CC] = {
 373                 .reg            = PM8607_INT_STATUS1,
 374                 .mask_reg       = PM8607_INT_MASK_1,
 375                 .offs           = 1 << 5,
 376         },
 377         [PM8607_IRQ_VBAT] = {
 378                 .reg            = PM8607_INT_STATUS2,
 379                 .mask_reg       = PM8607_INT_MASK_2,
 380                 .offs           = 1 << 0,
 381         },
 382         [PM8607_IRQ_VCHG] = {
 383                 .reg            = PM8607_INT_STATUS2,
 384                 .mask_reg       = PM8607_INT_MASK_2,
 385                 .offs           = 1 << 1,
 386         },
 387         [PM8607_IRQ_VSYS] = {
 388                 .reg            = PM8607_INT_STATUS2,
 389                 .mask_reg       = PM8607_INT_MASK_2,
 390                 .offs           = 1 << 2,
 391         },
 392         [PM8607_IRQ_TINT] = {
 393                 .reg            = PM8607_INT_STATUS2,
 394                 .mask_reg       = PM8607_INT_MASK_2,
 395                 .offs           = 1 << 3,
 396         },
 397         [PM8607_IRQ_GPADC0] = {
 398                 .reg            = PM8607_INT_STATUS2,
 399                 .mask_reg       = PM8607_INT_MASK_2,
 400                 .offs           = 1 << 4,
 401         },
 402         [PM8607_IRQ_GPADC1] = {
 403                 .reg            = PM8607_INT_STATUS2,
 404                 .mask_reg       = PM8607_INT_MASK_2,
 405                 .offs           = 1 << 5,
 406         },
 407         [PM8607_IRQ_GPADC2] = {
 408                 .reg            = PM8607_INT_STATUS2,
 409                 .mask_reg       = PM8607_INT_MASK_2,
 410                 .offs           = 1 << 6,
 411         },
 412         [PM8607_IRQ_GPADC3] = {
 413                 .reg            = PM8607_INT_STATUS2,
 414                 .mask_reg       = PM8607_INT_MASK_2,
 415                 .offs           = 1 << 7,
 416         },
 417         [PM8607_IRQ_AUDIO_SHORT] = {
 418                 .reg            = PM8607_INT_STATUS3,
 419                 .mask_reg       = PM8607_INT_MASK_3,
 420                 .offs           = 1 << 0,
 421         },
 422         [PM8607_IRQ_PEN] = {
 423                 .reg            = PM8607_INT_STATUS3,
 424                 .mask_reg       = PM8607_INT_MASK_3,
 425                 .offs           = 1 << 1,
 426         },
 427         [PM8607_IRQ_HEADSET] = {
 428                 .reg            = PM8607_INT_STATUS3,
 429                 .mask_reg       = PM8607_INT_MASK_3,
 430                 .offs           = 1 << 2,
 431         },
 432         [PM8607_IRQ_HOOK] = {
 433                 .reg            = PM8607_INT_STATUS3,
 434                 .mask_reg       = PM8607_INT_MASK_3,
 435                 .offs           = 1 << 3,
 436         },
 437         [PM8607_IRQ_MICIN] = {
 438                 .reg            = PM8607_INT_STATUS3,
 439                 .mask_reg       = PM8607_INT_MASK_3,
 440                 .offs           = 1 << 4,
 441         },
 442         [PM8607_IRQ_CHG_FAIL] = {
 443                 .reg            = PM8607_INT_STATUS3,
 444                 .mask_reg       = PM8607_INT_MASK_3,
 445                 .offs           = 1 << 5,
 446         },
 447         [PM8607_IRQ_CHG_DONE] = {
 448                 .reg            = PM8607_INT_STATUS3,
 449                 .mask_reg       = PM8607_INT_MASK_3,
 450                 .offs           = 1 << 6,
 451         },
 452         [PM8607_IRQ_CHG_FAULT] = {
 453                 .reg            = PM8607_INT_STATUS3,
 454                 .mask_reg       = PM8607_INT_MASK_3,
 455                 .offs           = 1 << 7,
 456         },
 457 };
 458
 459 static irqreturn_t pm860x_irq(int irq, void *data)
 460 {
 461         struct pm860x_chip *chip = data;
 462         struct pm860x_irq_data *irq_data;
 463         struct i2c_client *i2c;
 464         int read_reg = -1, value = 0;
 465         int i;
 466
 467         i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
 468         for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
 469                 irq_data = &pm860x_irqs[i];
 470                 if (read_reg != irq_data->reg) {
 471                         read_reg = irq_data->reg;
 472                         value = pm860x_reg_read(i2c, irq_data->reg);
 473                 }
 474                 if (value & irq_data->enable)
 475                         handle_nested_irq(chip->irq_base + i);
 476         }
 477         return IRQ_HANDLED;
 478 }
 479
 480 static void pm860x_irq_lock(struct irq_data *data)
 481 {
 482         struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
 483
 484         mutex_lock(&chip->irq_lock);
 485 }
 486
 487 static void pm860x_irq_sync_unlock(struct irq_data *data)
 488 {
 489         struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
 490         struct pm860x_irq_data *irq_data;
 491         struct i2c_client *i2c;
 492         static unsigned char cached[3] = {0x0, 0x0, 0x0};
 493         unsigned char mask[3];
 494         int i;
 495
 496         i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
 497         /* Load cached value. In initial, all IRQs are masked */
 498         for (i = 0; i < 3; i++)
 499                 mask[i] = cached[i];
 500         for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
 501                 irq_data = &pm860x_irqs[i];
 502                 switch (irq_data->mask_reg) {
 503                 case PM8607_INT_MASK_1:
 504                         mask[0] &= ~irq_data->offs;
 505                         mask[0] |= irq_data->enable;
 506                         break;
 507                 case PM8607_INT_MASK_2:
 508                         mask[1] &= ~irq_data->offs;
 509                         mask[1] |= irq_data->enable;
 510                         break;
 511                 case PM8607_INT_MASK_3:
 512                         mask[2] &= ~irq_data->offs;
 513                         mask[2] |= irq_data->enable;
 514                         break;
 515                 default:
 516                         dev_err(chip->dev, "wrong IRQ\n");
 517                         break;
 518                 }
 519         }
 520         /* update mask into registers */
 521         for (i = 0; i < 3; i++) {
 522                 if (mask[i] != cached[i]) {
 523                         cached[i] = mask[i];
 524                         pm860x_reg_write(i2c, PM8607_INT_MASK_1 + i, mask[i]);
 525                 }
 526         }
 527
 528         mutex_unlock(&chip->irq_lock);
 529 }
 530
 531 static void pm860x_irq_enable(struct irq_data *data)
 532 {
 533         pm860x_irqs[data->hwirq].enable = pm860x_irqs[data->hwirq].offs;
 534 }
 535
 536 static void pm860x_irq_disable(struct irq_data *data)
 537 {
 538         pm860x_irqs[data->hwirq].enable = 0;
 539 }
 540
 541 static struct irq_chip pm860x_irq_chip = {
 542         .name           = "88pm860x",
 543         .irq_bus_lock   = pm860x_irq_lock,
 544         .irq_bus_sync_unlock = pm860x_irq_sync_unlock,
 545         .irq_enable     = pm860x_irq_enable,
 546         .irq_disable    = pm860x_irq_disable,
 547 };
 548
 549 static int pm860x_irq_domain_map(struct irq_domain *d, unsigned int virq,
 550                                  irq_hw_number_t hw)
 551 {
 552         irq_set_chip_data(virq, d->host_data);
 553         irq_set_chip_and_handler(virq, &pm860x_irq_chip, handle_edge_irq);
 554         irq_set_nested_thread(virq, 1);
 555 #ifdef CONFIG_ARM
 556         set_irq_flags(virq, IRQF_VALID);
 557 #else
 558         irq_set_noprobe(virq);
 559 #endif
 560         return 0;
 561 }
 562
 563 static struct irq_domain_ops pm860x_irq_domain_ops = {
 564         .map    = pm860x_irq_domain_map,
 565         .xlate  = irq_domain_xlate_onetwocell,
 566 };
 567
 568 static int device_irq_init(struct pm860x_chip *chip,
 569                                      struct pm860x_platform_data *pdata)
 570 {
 571         struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \
 572                                 : chip->companion;
 573         unsigned char status_buf[INT_STATUS_NUM];
 574         unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
 575         int data, mask, ret = -EINVAL;
 576         int nr_irqs, irq_base = -1;
 577         struct device_node *node = i2c->dev.of_node;
 578
 579         mask = PM8607_B0_MISC1_INV_INT | PM8607_B0_MISC1_INT_CLEAR
 580                 | PM8607_B0_MISC1_INT_MASK;
 581         data = 0;
 582         chip->irq_mode = 0;
 583         if (pdata && pdata->irq_mode) {
 584                 /*
 585                  * irq_mode defines the way of clearing interrupt. If it's 1,
 586                  * clear IRQ by write. Otherwise, clear it by read.
 587                  * This control bit is valid from 88PM8607 B0 steping.
 588                  */
 589                 data |= PM8607_B0_MISC1_INT_CLEAR;
 590                 chip->irq_mode = 1;
 591         }
 592         ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, mask, data);
 593         if (ret < 0)
 594                 goto out;
 595
 596         /* mask all IRQs */
 597         memset(status_buf, 0, INT_STATUS_NUM);
 598         ret = pm860x_bulk_write(i2c, PM8607_INT_MASK_1,
 599                                 INT_STATUS_NUM, status_buf);
 600         if (ret < 0)
 601                 goto out;
 602
 603         if (chip->irq_mode) {
 604                 /* clear interrupt status by write */
 605                 memset(status_buf, 0xFF, INT_STATUS_NUM);
 606                 ret = pm860x_bulk_write(i2c, PM8607_INT_STATUS1,
 607                                         INT_STATUS_NUM, status_buf);
 608         } else {
 609                 /* clear interrupt status by read */
 610                 ret = pm860x_bulk_read(i2c, PM8607_INT_STATUS1,
 611                                         INT_STATUS_NUM, status_buf);
 612         }
 613         if (ret < 0)
 614                 goto out;
 615
 616         mutex_init(&chip->irq_lock);
 617
 618         if (pdata && pdata->irq_base)
 619                 irq_base = pdata->irq_base;
 620         nr_irqs = ARRAY_SIZE(pm860x_irqs);
 621         chip->irq_base = irq_alloc_descs(irq_base, 0, nr_irqs, 0);
 622         if (chip->irq_base < 0) {
 623                 dev_err(&i2c->dev, "Failed to allocate interrupts, ret:%d\n",
 624                         chip->irq_base);
 625                 ret = -EBUSY;
 626                 goto out;
 627         }
 628         irq_domain_add_legacy(node, nr_irqs, chip->irq_base, 0,
 629                               &pm860x_irq_domain_ops, chip);
 630         chip->core_irq = i2c->irq;
 631         if (!chip->core_irq)
 632                 goto out;
 633
 634         ret = request_threaded_irq(chip->core_irq, NULL, pm860x_irq, flags | IRQF_ONESHOT,
 635                                    "88pm860x", chip);
 636         if (ret) {
 637                 dev_err(chip->dev, "Failed to request IRQ: %d\n", ret);
 638                 chip->core_irq = 0;
 639         }
 640
 641         return 0;
 642 out:
 643         chip->core_irq = 0;
 644         return ret;
 645 }
 646
 647 static void device_irq_exit(struct pm860x_chip *chip)
 648 {
 649         if (chip->core_irq)
 650                 free_irq(chip->core_irq, chip);
 651 }
 652
 653 int pm8606_osc_enable(struct pm860x_chip *chip, unsigned short client)
 654 {
 655         int ret = -EIO;
 656         struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
 657                 chip->client : chip->companion;
 658
 659         dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
 660         dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
 661                         __func__, chip->osc_vote,
 662                         chip->osc_status);
 663
 664         mutex_lock(&chip->osc_lock);
 665         /* Update voting status */
 666         chip->osc_vote |= client;
 667         /* If reference group is off - turn on*/
 668         if (chip->osc_status != PM8606_REF_GP_OSC_ON) {
 669                 chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
 670                 /* Enable Reference group Vsys */
 671                 if (pm860x_set_bits(i2c, PM8606_VSYS,
 672                                 PM8606_VSYS_EN, PM8606_VSYS_EN))
 673                         goto out;
 674
 675                 /*Enable Internal Oscillator */
 676                 if (pm860x_set_bits(i2c, PM8606_MISC,
 677                                 PM8606_MISC_OSC_EN, PM8606_MISC_OSC_EN))
 678                         goto out;
 679                 /* Update status (only if writes succeed) */
 680                 chip->osc_status = PM8606_REF_GP_OSC_ON;
 681         }
 682         mutex_unlock(&chip->osc_lock);
 683
 684         dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
 685                         __func__, chip->osc_vote,
 686                         chip->osc_status, ret);
 687         return 0;
 688 out:
 689         mutex_unlock(&chip->osc_lock);
 690         return ret;
 691 }
 692 EXPORT_SYMBOL(pm8606_osc_enable);
 693
 694 int pm8606_osc_disable(struct pm860x_chip *chip, unsigned short client)
 695 {
 696         int ret = -EIO;
 697         struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
 698                 chip->client : chip->companion;
 699
 700         dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
 701         dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
 702                         __func__, chip->osc_vote,
 703                         chip->osc_status);
 704
 705         mutex_lock(&chip->osc_lock);
 706         /*Update voting status */
 707         chip->osc_vote &= ~(client);
 708         /* If reference group is off and this is the last client to release
 709          * - turn off */
 710         if ((chip->osc_status != PM8606_REF_GP_OSC_OFF) &&
 711                         (chip->osc_vote == REF_GP_NO_CLIENTS)) {
 712                 chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
 713                 /* Disable Reference group Vsys */
 714                 if (pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0))
 715                         goto out;
 716                 /* Disable Internal Oscillator */
 717                 if (pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0))
 718                         goto out;
 719                 chip->osc_status = PM8606_REF_GP_OSC_OFF;
 720         }
 721         mutex_unlock(&chip->osc_lock);
 722
 723         dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
 724                         __func__, chip->osc_vote,
 725                         chip->osc_status, ret);
 726         return 0;
 727 out:
 728         mutex_unlock(&chip->osc_lock);
 729         return ret;
 730 }
 731 EXPORT_SYMBOL(pm8606_osc_disable);
 732
 733 static void device_osc_init(struct i2c_client *i2c)
 734 {
 735         struct pm860x_chip *chip = i2c_get_clientdata(i2c);
 736
 737         mutex_init(&chip->osc_lock);
 738         /* init portofino reference group voting and status */
 739         /* Disable Reference group Vsys */
 740         pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0);
 741         /* Disable Internal Oscillator */
 742         pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0);
 743
 744         chip->osc_vote = REF_GP_NO_CLIENTS;
 745         chip->osc_status = PM8606_REF_GP_OSC_OFF;
 746 }
 747
 748 static void device_bk_init(struct pm860x_chip *chip,
 749                                      struct pm860x_platform_data *pdata)
 750 {
 751         int ret, i;
 752
 753         if (pdata && pdata->backlight) {
 754                 if (pdata->num_backlights > ARRAY_SIZE(bk_devs))
 755                         pdata->num_backlights = ARRAY_SIZE(bk_devs);
 756                 for (i = 0; i < pdata->num_backlights; i++) {
 757                         bk_devs[i].platform_data = &pdata->backlight[i];
 758                         bk_devs[i].pdata_size =
 759                                 sizeof(struct pm860x_backlight_pdata);
 760                 }
 761         }
 762         ret = mfd_add_devices(chip->dev, 0, bk_devs,
 763                               ARRAY_SIZE(bk_devs), NULL, 0, NULL);
 764         if (ret < 0)
 765                 dev_err(chip->dev, "Failed to add backlight subdev\n");
 766 }
 767
 768 static void device_led_init(struct pm860x_chip *chip,
 769                                       struct pm860x_platform_data *pdata)
 770 {
 771         int ret, i;
 772
 773         if (pdata && pdata->led) {
 774                 if (pdata->num_leds > ARRAY_SIZE(led_devs))
 775                         pdata->num_leds = ARRAY_SIZE(led_devs);
 776                 for (i = 0; i < pdata->num_leds; i++) {
 777                         led_devs[i].platform_data = &pdata->led[i];
 778                         led_devs[i].pdata_size =
 779                                 sizeof(struct pm860x_led_pdata);
 780                 }
 781         }
 782         ret = mfd_add_devices(chip->dev, 0, led_devs,
 783                               ARRAY_SIZE(led_devs), NULL, 0, NULL);
 784         if (ret < 0) {
 785                 dev_err(chip->dev, "Failed to add led subdev\n");
 786                 return;
 787         }
 788 }
 789
 790 static void device_regulator_init(struct pm860x_chip *chip,
 791                                             struct pm860x_platform_data *pdata)
 792 {
 793         int ret;
 794
 795         if (pdata == NULL)
 796                 return;
 797         if (pdata->buck1) {
 798                 reg_devs[0].platform_data = pdata->buck1;
 799                 reg_devs[0].pdata_size = sizeof(struct regulator_init_data);
 800         }
 801         if (pdata->buck2) {
 802                 reg_devs[1].platform_data = pdata->buck2;
 803                 reg_devs[1].pdata_size = sizeof(struct regulator_init_data);
 804         }
 805         if (pdata->buck3) {
 806                 reg_devs[2].platform_data = pdata->buck3;
 807                 reg_devs[2].pdata_size = sizeof(struct regulator_init_data);
 808         }
 809         if (pdata->ldo1) {
 810                 reg_devs[3].platform_data = pdata->ldo1;
 811                 reg_devs[3].pdata_size = sizeof(struct regulator_init_data);
 812         }
 813         if (pdata->ldo2) {
 814                 reg_devs[4].platform_data = pdata->ldo2;
 815                 reg_devs[4].pdata_size = sizeof(struct regulator_init_data);
 816         }
 817         if (pdata->ldo3) {
 818                 reg_devs[5].platform_data = pdata->ldo3;
 819                 reg_devs[5].pdata_size = sizeof(struct regulator_init_data);
 820         }
 821         if (pdata->ldo4) {
 822                 reg_devs[6].platform_data = pdata->ldo4;
 823                 reg_devs[6].pdata_size = sizeof(struct regulator_init_data);
 824         }
 825         if (pdata->ldo5) {
 826                 reg_devs[7].platform_data = pdata->ldo5;
 827                 reg_devs[7].pdata_size = sizeof(struct regulator_init_data);
 828         }
 829         if (pdata->ldo6) {
 830                 reg_devs[8].platform_data = pdata->ldo6;
 831                 reg_devs[8].pdata_size = sizeof(struct regulator_init_data);
 832         }
 833         if (pdata->ldo7) {
 834                 reg_devs[9].platform_data = pdata->ldo7;
 835                 reg_devs[9].pdata_size = sizeof(struct regulator_init_data);
 836         }
 837         if (pdata->ldo8) {
 838                 reg_devs[10].platform_data = pdata->ldo8;
 839                 reg_devs[10].pdata_size = sizeof(struct regulator_init_data);
 840         }
 841         if (pdata->ldo9) {
 842                 reg_devs[11].platform_data = pdata->ldo9;
 843                 reg_devs[11].pdata_size = sizeof(struct regulator_init_data);
 844         }
 845         if (pdata->ldo10) {
 846                 reg_devs[12].platform_data = pdata->ldo10;
 847                 reg_devs[12].pdata_size = sizeof(struct regulator_init_data);
 848         }
 849         if (pdata->ldo12) {
 850                 reg_devs[13].platform_data = pdata->ldo12;
 851                 reg_devs[13].pdata_size = sizeof(struct regulator_init_data);
 852         }
 853         if (pdata->ldo_vibrator) {
 854                 reg_devs[14].platform_data = pdata->ldo_vibrator;
 855                 reg_devs[14].pdata_size = sizeof(struct regulator_init_data);
 856         }
 857         if (pdata->ldo14) {
 858                 reg_devs[15].platform_data = pdata->ldo14;
 859                 reg_devs[15].pdata_size = sizeof(struct regulator_init_data);
 860         }
 861         ret = mfd_add_devices(chip->dev, 0, reg_devs,
 862                               ARRAY_SIZE(reg_devs), NULL, 0, NULL);
 863         if (ret < 0) {
 864                 dev_err(chip->dev, "Failed to add regulator subdev\n");
 865                 return;
 866         }
 867 }
 868
 869 static void device_rtc_init(struct pm860x_chip *chip,
 870                                       struct pm860x_platform_data *pdata)
 871 {
 872         int ret;
 873
 874         if ((pdata == NULL))
 875                 return;
 876
 877         rtc_devs[0].platform_data = pdata->rtc;
 878         rtc_devs[0].pdata_size = sizeof(struct pm860x_rtc_pdata);
 879         rtc_devs[0].num_resources = ARRAY_SIZE(rtc_resources);
 880         rtc_devs[0].resources = &rtc_resources[0];
 881         ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
 882                               ARRAY_SIZE(rtc_devs), &rtc_resources[0],
 883                               chip->irq_base, NULL);
 884         if (ret < 0)
 885                 dev_err(chip->dev, "Failed to add rtc subdev\n");
 886 }
 887
 888 static void device_touch_init(struct pm860x_chip *chip,
 889                                         struct pm860x_platform_data *pdata)
 890 {
 891         int ret;
 892
 893         if (pdata == NULL)
 894                 return;
 895
 896         touch_devs[0].platform_data = pdata->touch;
 897         touch_devs[0].pdata_size = sizeof(struct pm860x_touch_pdata);
 898         touch_devs[0].num_resources = ARRAY_SIZE(touch_resources);
 899         touch_devs[0].resources = &touch_resources[0];
 900         ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
 901                               ARRAY_SIZE(touch_devs), &touch_resources[0],
 902                               chip->irq_base, NULL);
 903         if (ret < 0)
 904                 dev_err(chip->dev, "Failed to add touch subdev\n");
 905 }
 906
 907 static void device_power_init(struct pm860x_chip *chip,
 908                                         struct pm860x_platform_data *pdata)
 909 {
 910         int ret;
 911
 912         if (pdata == NULL)
 913                 return;
 914
 915         power_devs[0].platform_data = pdata->power;
 916         power_devs[0].pdata_size = sizeof(struct pm860x_power_pdata);
 917         power_devs[0].num_resources = ARRAY_SIZE(battery_resources);
 918         power_devs[0].resources = &battery_resources[0],
 919         ret = mfd_add_devices(chip->dev, 0, &power_devs[0], 1,
 920                               &battery_resources[0], chip->irq_base, NULL);
 921         if (ret < 0)
 922                 dev_err(chip->dev, "Failed to add battery subdev\n");
 923
 924         power_devs[1].platform_data = pdata->power;
 925         power_devs[1].pdata_size = sizeof(struct pm860x_power_pdata);
 926         power_devs[1].num_resources = ARRAY_SIZE(charger_resources);
 927         power_devs[1].resources = &charger_resources[0],
 928         ret = mfd_add_devices(chip->dev, 0, &power_devs[1], 1,
 929                               &charger_resources[0], chip->irq_base, NULL);
 930         if (ret < 0)
 931                 dev_err(chip->dev, "Failed to add charger subdev\n");
 932
 933         power_devs[2].platform_data = &preg_init_data;
 934         power_devs[2].pdata_size = sizeof(struct regulator_init_data);
 935         ret = mfd_add_devices(chip->dev, 0, &power_devs[2], 1,
 936                               NULL, chip->irq_base, NULL);
 937         if (ret < 0)
 938                 dev_err(chip->dev, "Failed to add preg subdev\n");
 939
 940         if (pdata->chg_desc) {
 941                 pdata->chg_desc->charger_regulators =
 942                         &chg_desc_regulator_data[0];
 943                 pdata->chg_desc->num_charger_regulators =
 944                         ARRAY_SIZE(chg_desc_regulator_data),
 945                 power_devs[3].platform_data = pdata->chg_desc;
 946                 power_devs[3].pdata_size = sizeof(*pdata->chg_desc);
 947                 ret = mfd_add_devices(chip->dev, 0, &power_devs[3], 1,
 948                                       NULL, chip->irq_base, NULL);
 949                 if (ret < 0)
 950                         dev_err(chip->dev, "Failed to add chg-manager subdev\n");
 951         }
 952 }
 953
 954 static void device_onkey_init(struct pm860x_chip *chip,
 955                                         struct pm860x_platform_data *pdata)
 956 {
 957         int ret;
 958
 959         onkey_devs[0].num_resources = ARRAY_SIZE(onkey_resources);
 960         onkey_devs[0].resources = &onkey_resources[0],
 961         ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
 962                               ARRAY_SIZE(onkey_devs), &onkey_resources[0],
 963                               chip->irq_base, NULL);
 964         if (ret < 0)
 965                 dev_err(chip->dev, "Failed to add onkey subdev\n");
 966 }
 967
 968 static void device_codec_init(struct pm860x_chip *chip,
 969                                         struct pm860x_platform_data *pdata)
 970 {
 971         int ret;
 972
 973         codec_devs[0].num_resources = ARRAY_SIZE(codec_resources);
 974         codec_devs[0].resources = &codec_resources[0],
 975         ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
 976                               ARRAY_SIZE(codec_devs), &codec_resources[0], 0,
 977                               NULL);
 978         if (ret < 0)
 979                 dev_err(chip->dev, "Failed to add codec subdev\n");
 980 }
 981
 982 static void device_8607_init(struct pm860x_chip *chip,
 983                                        struct i2c_client *i2c,
 984                                        struct pm860x_platform_data *pdata)
 985 {
 986         int data, ret;
 987
 988         ret = pm860x_reg_read(i2c, PM8607_CHIP_ID);
 989         if (ret < 0) {
 990                 dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
 991                 goto out;
 992         }
 993         switch (ret & PM8607_VERSION_MASK) {
 994         case 0x40:
 995         case 0x50:
 996                 dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
 997                          ret);
 998                 break;
 999         default:
1000                 dev_err(chip->dev, "Failed to detect Marvell 88PM8607. "
1001                         "Chip ID: %02x\n", ret);
1002                 goto out;
1003         }
1004
1005         ret = pm860x_reg_read(i2c, PM8607_BUCK3);
1006         if (ret < 0) {
1007                 dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
1008                 goto out;
1009         }
1010         if (ret & PM8607_BUCK3_DOUBLE)
1011                 chip->buck3_double = 1;
1012
1013         ret = pm860x_reg_read(i2c, PM8607_B0_MISC1);
1014         if (ret < 0) {
1015                 dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
1016                 goto out;
1017         }
1018
1019         if (pdata && (pdata->i2c_port == PI2C_PORT))
1020                 data = PM8607_B0_MISC1_PI2C;
1021         else
1022                 data = 0;
1023         ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, PM8607_B0_MISC1_PI2C, data);
1024         if (ret < 0) {
1025                 dev_err(chip->dev, "Failed to access MISC1:%d\n", ret);
1026                 goto out;
1027         }
1028
1029         ret = device_irq_init(chip, pdata);
1030         if (ret < 0)
1031                 goto out;
1032
1033         device_regulator_init(chip, pdata);
1034         device_rtc_init(chip, pdata);
1035         device_onkey_init(chip, pdata);
1036         device_touch_init(chip, pdata);
1037         device_power_init(chip, pdata);
1038         device_codec_init(chip, pdata);
1039 out:
1040         return;
1041 }
1042
1043 static void device_8606_init(struct pm860x_chip *chip,
1044                                        struct i2c_client *i2c,
1045                                        struct pm860x_platform_data *pdata)
1046 {
1047         device_osc_init(i2c);
1048         device_bk_init(chip, pdata);
1049         device_led_init(chip, pdata);
1050 }
1051
1052 static int pm860x_device_init(struct pm860x_chip *chip,
1053                                         struct pm860x_platform_data *pdata)
1054 {
1055         chip->core_irq = 0;
1056
1057         switch (chip->id) {
1058         case CHIP_PM8606:
1059                 device_8606_init(chip, chip->client, pdata);
1060                 break;
1061         case CHIP_PM8607:
1062                 device_8607_init(chip, chip->client, pdata);
1063                 break;
1064         }
1065
1066         if (chip->companion) {
1067                 switch (chip->id) {
1068                 case CHIP_PM8607:
1069                         device_8606_init(chip, chip->companion, pdata);
1070                         break;
1071                 case CHIP_PM8606:
1072                         device_8607_init(chip, chip->companion, pdata);
1073                         break;
1074                 }
1075         }
1076
1077         return 0;
1078 }
1079
1080 static void pm860x_device_exit(struct pm860x_chip *chip)
1081 {
1082         device_irq_exit(chip);
1083         mfd_remove_devices(chip->dev);
1084 }
1085
1086 static int verify_addr(struct i2c_client *i2c)
1087 {
1088         unsigned short addr_8607[] = {0x30, 0x34};
1089         unsigned short addr_8606[] = {0x10, 0x11};
1090         int size, i;
1091
1092         if (i2c == NULL)
1093                 return 0;
1094         size = ARRAY_SIZE(addr_8606);
1095         for (i = 0; i < size; i++) {
1096                 if (i2c->addr == *(addr_8606 + i))
1097                         return CHIP_PM8606;
1098         }
1099         size = ARRAY_SIZE(addr_8607);
1100         for (i = 0; i < size; i++) {
1101                 if (i2c->addr == *(addr_8607 + i))
1102                         return CHIP_PM8607;
1103         }
1104         return 0;
1105 }
1106
1107 static struct regmap_config pm860x_regmap_config = {
1108         .reg_bits = 8,
1109         .val_bits = 8,
1110 };
1111
1112 static int pm860x_dt_init(struct device_node *np,
1113                                     struct device *dev,
1114                                     struct pm860x_platform_data *pdata)
1115 {
1116         int ret;
1117
1118         if (of_get_property(np, "marvell,88pm860x-irq-read-clr", NULL))
1119                 pdata->irq_mode = 1;
1120         ret = of_property_read_u32(np, "marvell,88pm860x-slave-addr",
1121                                    &pdata->companion_addr);
1122         if (ret) {
1123                 dev_err(dev, "Not found \"marvell,88pm860x-slave-addr\" "
1124                         "property\n");
1125                 pdata->companion_addr = 0;
1126         }
1127         return 0;
1128 }
1129
1130 static int pm860x_probe(struct i2c_client *client,
1131                                   const struct i2c_device_id *id)
1132 {
1133         struct pm860x_platform_data *pdata = client->dev.platform_data;
1134         struct device_node *node = client->dev.of_node;
1135         struct pm860x_chip *chip;
1136         int ret;
1137
1138         if (node && !pdata) {
1139                 /* parse DT to get platform data */
1140                 pdata = devm_kzalloc(&client->dev,
1141                                      sizeof(struct pm860x_platform_data),
1142                                      GFP_KERNEL);
1143                 if (!pdata)
1144                         return -ENOMEM;
1145                 ret = pm860x_dt_init(node, &client->dev, pdata);
1146                 if (ret)
1147                         return ret;
1148         } else if (!pdata) {
1149                 pr_info("No platform data in %s!\n", __func__);
1150                 return -EINVAL;
1151         }
1152
1153         chip = kzalloc(sizeof(struct pm860x_chip), GFP_KERNEL);
1154         if (chip == NULL)
1155                 return -ENOMEM;
1156
1157         chip->id = verify_addr(client);
1158         chip->regmap = regmap_init_i2c(client, &pm860x_regmap_config);
1159         if (IS_ERR(chip->regmap)) {
1160                 ret = PTR_ERR(chip->regmap);
1161                 dev_err(&client->dev, "Failed to allocate register map: %d\n",
1162                                 ret);
1163                 kfree(chip);
1164                 return ret;
1165         }
1166         chip->client = client;
1167         i2c_set_clientdata(client, chip);
1168         chip->dev = &client->dev;
1169         dev_set_drvdata(chip->dev, chip);
1170
1171         /*
1172          * Both client and companion client shares same platform driver.
1173          * Driver distinguishes them by pdata->companion_addr.
1174          * pdata->companion_addr is only assigned if companion chip exists.
1175          * At the same time, the companion_addr shouldn't equal to client
1176          * address.
1177          */
1178         if (pdata->companion_addr && (pdata->companion_addr != client->addr)) {
1179                 chip->companion_addr = pdata->companion_addr;
1180                 chip->companion = i2c_new_dummy(chip->client->adapter,
1181                                                 chip->companion_addr);
1182                 if (!chip->companion) {
1183                         dev_err(&client->dev,
1184                                 "Failed to allocate I2C companion device\n");
1185                         return -ENODEV;
1186                 }
1187                 chip->regmap_companion = regmap_init_i2c(chip->companion,
1188                                                         &pm860x_regmap_config);
1189                 if (IS_ERR(chip->regmap_companion)) {
1190                         ret = PTR_ERR(chip->regmap_companion);
1191                         dev_err(&chip->companion->dev,
1192                                 "Failed to allocate register map: %d\n", ret);
1193                         i2c_unregister_device(chip->companion);
1194                         return ret;
1195                 }
1196                 i2c_set_clientdata(chip->companion, chip);
1197         }
1198
1199         pm860x_device_init(chip, pdata);
1200         return 0;
1201 }
1202
1203 static int pm860x_remove(struct i2c_client *client)
1204 {
1205         struct pm860x_chip *chip = i2c_get_clientdata(client);
1206
1207         pm860x_device_exit(chip);
1208         if (chip->companion) {
1209                 regmap_exit(chip->regmap_companion);
1210                 i2c_unregister_device(chip->companion);
1211         }
1212         regmap_exit(chip->regmap);
1213         kfree(chip);
1214         return 0;
1215 }
1216
1217 #ifdef CONFIG_PM_SLEEP
1218 static int pm860x_suspend(struct device *dev)
1219 {
1220         struct i2c_client *client = container_of(dev, struct i2c_client, dev);
1221         struct pm860x_chip *chip = i2c_get_clientdata(client);
1222
1223         if (device_may_wakeup(dev) && chip->wakeup_flag)
1224                 enable_irq_wake(chip->core_irq);
1225         return 0;
1226 }
1227
1228 static int pm860x_resume(struct device *dev)
1229 {
1230         struct i2c_client *client = container_of(dev, struct i2c_client, dev);
1231         struct pm860x_chip *chip = i2c_get_clientdata(client);
1232
1233         if (device_may_wakeup(dev) && chip->wakeup_flag)
1234                 disable_irq_wake(chip->core_irq);
1235         return 0;
1236 }
1237 #endif
1238
1239 static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
1240
1241 static const struct i2c_device_id pm860x_id_table[] = {
1242         { "88PM860x", 0 },
1243         {}
1244 };
1245 MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
1246
1247 static const struct of_device_id pm860x_dt_ids[] = {
1248         { .compatible = "marvell,88pm860x", },
1249         {},
1250 };
1251 MODULE_DEVICE_TABLE(of, pm860x_dt_ids);
1252
1253 static struct i2c_driver pm860x_driver = {
1254         .driver = {
1255                 .name   = "88PM860x",
1256                 .owner  = THIS_MODULE,
1257                 .pm     = &pm860x_pm_ops,
1258                 .of_match_table = of_match_ptr(pm860x_dt_ids),
1259         },
1260         .probe          = pm860x_probe,
1261         .remove         = pm860x_remove,
1262         .id_table       = pm860x_id_table,
1263 };
1264
1265 static int __init pm860x_i2c_init(void)
1266 {
1267         int ret;
1268         ret = i2c_add_driver(&pm860x_driver);
1269         if (ret != 0)
1270                 pr_err("Failed to register 88PM860x I2C driver: %d\n", ret);
1271         return ret;
1272 }
1273 subsys_initcall(pm860x_i2c_init);
1274
1275 static void __exit pm860x_i2c_exit(void)
1276 {
1277         i2c_del_driver(&pm860x_driver);
1278 }
1279 module_exit(pm860x_i2c_exit);
1280
1281 MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM860x");
1282 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
1283 MODULE_LICENSE("GPL");