drivers/mfd/88pm860x-core.c

   1 /*
   2  * Base driver for Marvell 88PM8607
   3  *
   4  * Copyright (C) 2009 Marvell International Ltd.
   5  *
   6  * Author: Haojian Zhuang <haojian.zhuang@marvell.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/module.h>
  15 #include <linux/err.h>
  16 #include <linux/i2c.h>
  17 #include <linux/irq.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/irqdomain.h>
  20 #include <linux/of.h>
  21 #include <linux/of_platform.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/regmap.h>
  24 #include <linux/slab.h>
  25 #include <linux/mfd/core.h>
  26 #include <linux/mfd/88pm860x.h>
  27 #include <linux/regulator/machine.h>
  28 #include <linux/power/charger-manager.h>
  29
  30 #define INT_STATUS_NUM                  3
  31
  32 static struct resource bk0_resources[] = {
  33         {2, 2, "duty cycle", IORESOURCE_REG, },
  34         {3, 3, "always on",  IORESOURCE_REG, },
  35         {3, 3, "current",    IORESOURCE_REG, },
  36 };
  37 static struct resource bk1_resources[] = {
  38         {4, 4, "duty cycle", IORESOURCE_REG, },
  39         {5, 5, "always on",  IORESOURCE_REG, },
  40         {5, 5, "current",    IORESOURCE_REG, },
  41 };
  42 static struct resource bk2_resources[] = {
  43         {6, 6, "duty cycle", IORESOURCE_REG, },
  44         {7, 7, "always on",  IORESOURCE_REG, },
  45         {5, 5, "current",    IORESOURCE_REG, },
  46 };
  47
  48 static struct resource led0_resources[] = {
  49         /* RGB1 Red LED */
  50         {0xd, 0xd, "control", IORESOURCE_REG, },
  51         {0xc, 0xc, "blink",   IORESOURCE_REG, },
  52 };
  53 static struct resource led1_resources[] = {
  54         /* RGB1 Green LED */
  55         {0xe, 0xe, "control", IORESOURCE_REG, },
  56         {0xc, 0xc, "blink",   IORESOURCE_REG, },
  57 };
  58 static struct resource led2_resources[] = {
  59         /* RGB1 Blue LED */
  60         {0xf, 0xf, "control", IORESOURCE_REG, },
  61         {0xc, 0xc, "blink",   IORESOURCE_REG, },
  62 };
  63 static struct resource led3_resources[] = {
  64         /* RGB2 Red LED */
  65         {0x9, 0x9, "control", IORESOURCE_REG, },
  66         {0x8, 0x8, "blink",   IORESOURCE_REG, },
  67 };
  68 static struct resource led4_resources[] = {
  69         /* RGB2 Green LED */
  70         {0xa, 0xa, "control", IORESOURCE_REG, },
  71         {0x8, 0x8, "blink",   IORESOURCE_REG, },
  72 };
  73 static struct resource led5_resources[] = {
  74         /* RGB2 Blue LED */
  75         {0xb, 0xb, "control", IORESOURCE_REG, },
  76         {0x8, 0x8, "blink",   IORESOURCE_REG, },
  77 };
  78
  79 static struct resource buck1_resources[] = {
  80         {0x24, 0x24, "buck set", IORESOURCE_REG, },
  81 };
  82 static struct resource buck2_resources[] = {
  83         {0x25, 0x25, "buck set", IORESOURCE_REG, },
  84 };
  85 static struct resource buck3_resources[] = {
  86         {0x26, 0x26, "buck set", IORESOURCE_REG, },
  87 };
  88 static struct resource ldo1_resources[] = {
  89         {0x10, 0x10, "ldo set", IORESOURCE_REG, },
  90 };
  91 static struct resource ldo2_resources[] = {
  92         {0x11, 0x11, "ldo set", IORESOURCE_REG, },
  93 };
  94 static struct resource ldo3_resources[] = {
  95         {0x12, 0x12, "ldo set", IORESOURCE_REG, },
  96 };
  97 static struct resource ldo4_resources[] = {
  98         {0x13, 0x13, "ldo set", IORESOURCE_REG, },
  99 };
 100 static struct resource ldo5_resources[] = {
 101         {0x14, 0x14, "ldo set", IORESOURCE_REG, },
 102 };
 103 static struct resource ldo6_resources[] = {
 104         {0x15, 0x15, "ldo set", IORESOURCE_REG, },
 105 };
 106 static struct resource ldo7_resources[] = {
 107         {0x16, 0x16, "ldo set", IORESOURCE_REG, },
 108 };
 109 static struct resource ldo8_resources[] = {
 110         {0x17, 0x17, "ldo set", IORESOURCE_REG, },
 111 };
 112 static struct resource ldo9_resources[] = {
 113         {0x18, 0x18, "ldo set", IORESOURCE_REG, },
 114 };
 115 static struct resource ldo10_resources[] = {
 116         {0x19, 0x19, "ldo set", IORESOURCE_REG, },
 117 };
 118 static struct resource ldo12_resources[] = {
 119         {0x1a, 0x1a, "ldo set", IORESOURCE_REG, },
 120 };
 121 static struct resource ldo_vibrator_resources[] = {
 122         {0x28, 0x28, "ldo set", IORESOURCE_REG, },
 123 };
 124 static struct resource ldo14_resources[] = {
 125         {0x1b, 0x1b, "ldo set", IORESOURCE_REG, },
 126 };
 127
 128 static struct resource touch_resources[] = {
 129         {PM8607_IRQ_PEN, PM8607_IRQ_PEN, "touch", IORESOURCE_IRQ,},
 130 };
 131
 132 static struct resource onkey_resources[] = {
 133         {PM8607_IRQ_ONKEY, PM8607_IRQ_ONKEY, "onkey", IORESOURCE_IRQ,},
 134 };
 135
 136 static struct resource codec_resources[] = {
 137         /* Headset microphone insertion or removal */
 138         {PM8607_IRQ_MICIN,   PM8607_IRQ_MICIN,   "micin",   IORESOURCE_IRQ,},
 139         /* Hook-switch press or release */
 140         {PM8607_IRQ_HOOK,    PM8607_IRQ_HOOK,    "hook",    IORESOURCE_IRQ,},
 141         /* Headset insertion or removal */
 142         {PM8607_IRQ_HEADSET, PM8607_IRQ_HEADSET, "headset", IORESOURCE_IRQ,},
 143         /* Audio short */
 144         {PM8607_IRQ_AUDIO_SHORT, PM8607_IRQ_AUDIO_SHORT, "audio-short",
 145          IORESOURCE_IRQ,},
 146 };
 147
 148 static struct resource battery_resources[] = {
 149         {PM8607_IRQ_CC,  PM8607_IRQ_CC,  "columb counter", IORESOURCE_IRQ,},
 150         {PM8607_IRQ_BAT, PM8607_IRQ_BAT, "battery",        IORESOURCE_IRQ,},
 151 };
 152
 153 static struct resource charger_resources[] = {
 154         {PM8607_IRQ_CHG,  PM8607_IRQ_CHG,  "charger detect",  IORESOURCE_IRQ,},
 155         {PM8607_IRQ_CHG_DONE,  PM8607_IRQ_CHG_DONE,  "charging done",
 156          IORESOURCE_IRQ,},
 157         {PM8607_IRQ_CHG_FAIL,  PM8607_IRQ_CHG_FAIL,  "charging timeout",
 158          IORESOURCE_IRQ,},
 159         {PM8607_IRQ_CHG_FAULT, PM8607_IRQ_CHG_FAULT, "charging fault",
 160          IORESOURCE_IRQ,},
 161         {PM8607_IRQ_GPADC1,    PM8607_IRQ_GPADC1,    "battery temperature",
 162          IORESOURCE_IRQ,},
 163         {PM8607_IRQ_VBAT, PM8607_IRQ_VBAT, "battery voltage", IORESOURCE_IRQ,},
 164         {PM8607_IRQ_VCHG, PM8607_IRQ_VCHG, "vchg voltage",    IORESOURCE_IRQ,},
 165 };
 166
 167 static struct resource rtc_resources[] = {
 168         {PM8607_IRQ_RTC, PM8607_IRQ_RTC, "rtc", IORESOURCE_IRQ,},
 169 };
 170
 171 static struct mfd_cell bk_devs[] = {
 172         {
 173                 .name = "88pm860x-backlight",
 174                 .id = 0,
 175                 .num_resources = ARRAY_SIZE(bk0_resources),
 176                 .resources = bk0_resources,
 177         }, {
 178                 .name = "88pm860x-backlight",
 179                 .id = 1,
 180                 .num_resources = ARRAY_SIZE(bk1_resources),
 181                 .resources = bk1_resources,
 182         }, {
 183                 .name = "88pm860x-backlight",
 184                 .id = 2,
 185                 .num_resources = ARRAY_SIZE(bk2_resources),
 186                 .resources = bk2_resources,
 187         },
 188 };
 189
 190 static struct mfd_cell led_devs[] = {
 191         {
 192                 .name = "88pm860x-led",
 193                 .id = 0,
 194                 .num_resources = ARRAY_SIZE(led0_resources),
 195                 .resources = led0_resources,
 196         }, {
 197                 .name = "88pm860x-led",
 198                 .id = 1,
 199                 .num_resources = ARRAY_SIZE(led1_resources),
 200                 .resources = led1_resources,
 201         }, {
 202                 .name = "88pm860x-led",
 203                 .id = 2,
 204                 .num_resources = ARRAY_SIZE(led2_resources),
 205                 .resources = led2_resources,
 206         }, {
 207                 .name = "88pm860x-led",
 208                 .id = 3,
 209                 .num_resources = ARRAY_SIZE(led3_resources),
 210                 .resources = led3_resources,
 211         }, {
 212                 .name = "88pm860x-led",
 213                 .id = 4,
 214                 .num_resources = ARRAY_SIZE(led4_resources),
 215                 .resources = led4_resources,
 216         }, {
 217                 .name = "88pm860x-led",
 218                 .id = 5,
 219                 .num_resources = ARRAY_SIZE(led5_resources),
 220                 .resources = led5_resources,
 221         },
 222 };
 223
 224 static struct mfd_cell reg_devs[] = {
 225         {
 226                 .name = "88pm860x-regulator",
 227                 .id = 0,
 228                 .num_resources = ARRAY_SIZE(buck1_resources),
 229                 .resources = buck1_resources,
 230         }, {
 231                 .name = "88pm860x-regulator",
 232                 .id = 1,
 233                 .num_resources = ARRAY_SIZE(buck2_resources),
 234                 .resources = buck2_resources,
 235         }, {
 236                 .name = "88pm860x-regulator",
 237                 .id = 2,
 238                 .num_resources = ARRAY_SIZE(buck3_resources),
 239                 .resources = buck3_resources,
 240         }, {
 241                 .name = "88pm860x-regulator",
 242                 .id = 3,
 243                 .num_resources = ARRAY_SIZE(ldo1_resources),
 244                 .resources = ldo1_resources,
 245         }, {
 246                 .name = "88pm860x-regulator",
 247                 .id = 4,
 248                 .num_resources = ARRAY_SIZE(ldo2_resources),
 249                 .resources = ldo2_resources,
 250         }, {
 251                 .name = "88pm860x-regulator",
 252                 .id = 5,
 253                 .num_resources = ARRAY_SIZE(ldo3_resources),
 254                 .resources = ldo3_resources,
 255         }, {
 256                 .name = "88pm860x-regulator",
 257                 .id = 6,
 258                 .num_resources = ARRAY_SIZE(ldo4_resources),
 259                 .resources = ldo4_resources,
 260         }, {
 261                 .name = "88pm860x-regulator",
 262                 .id = 7,
 263                 .num_resources = ARRAY_SIZE(ldo5_resources),
 264                 .resources = ldo5_resources,
 265         }, {
 266                 .name = "88pm860x-regulator",
 267                 .id = 8,
 268                 .num_resources = ARRAY_SIZE(ldo6_resources),
 269                 .resources = ldo6_resources,
 270         }, {
 271                 .name = "88pm860x-regulator",
 272                 .id = 9,
 273                 .num_resources = ARRAY_SIZE(ldo7_resources),
 274                 .resources = ldo7_resources,
 275         }, {
 276                 .name = "88pm860x-regulator",
 277                 .id = 10,
 278                 .num_resources = ARRAY_SIZE(ldo8_resources),
 279                 .resources = ldo8_resources,
 280         }, {
 281                 .name = "88pm860x-regulator",
 282                 .id = 11,
 283                 .num_resources = ARRAY_SIZE(ldo9_resources),
 284                 .resources = ldo9_resources,
 285         }, {
 286                 .name = "88pm860x-regulator",
 287                 .id = 12,
 288                 .num_resources = ARRAY_SIZE(ldo10_resources),
 289                 .resources = ldo10_resources,
 290         }, {
 291                 .name = "88pm860x-regulator",
 292                 .id = 13,
 293                 .num_resources = ARRAY_SIZE(ldo12_resources),
 294                 .resources = ldo12_resources,
 295         }, {
 296                 .name = "88pm860x-regulator",
 297                 .id = 14,
 298                 .num_resources = ARRAY_SIZE(ldo_vibrator_resources),
 299                 .resources = ldo_vibrator_resources,
 300         }, {
 301                 .name = "88pm860x-regulator",
 302                 .id = 15,
 303                 .num_resources = ARRAY_SIZE(ldo14_resources),
 304                 .resources = ldo14_resources,
 305         },
 306 };
 307
 308 static struct mfd_cell touch_devs[] = {
 309         {"88pm860x-touch", -1,},
 310 };
 311
 312 static struct mfd_cell onkey_devs[] = {
 313         {"88pm860x-onkey", -1,},
 314 };
 315
 316 static struct mfd_cell codec_devs[] = {
 317         {"88pm860x-codec", -1,},
 318 };
 319
 320 static struct regulator_consumer_supply preg_supply[] = {
 321         REGULATOR_SUPPLY("preg", "charger-manager"),
 322 };
 323
 324 static struct regulator_init_data preg_init_data = {
 325         .num_consumer_supplies  = ARRAY_SIZE(preg_supply),
 326         .consumer_supplies      = &preg_supply[0],
 327 };
 328
 329 static struct charger_regulator chg_desc_regulator_data[] = {
 330         { .regulator_name = "preg", },
 331 };
 332
 333 static struct mfd_cell power_devs[] = {
 334         {"88pm860x-battery", -1,},
 335         {"88pm860x-charger", -1,},
 336         {"88pm860x-preg",    -1,},
 337         {"charger-manager", -1,},
 338 };
 339
 340 static struct mfd_cell rtc_devs[] = {
 341         {"88pm860x-rtc", -1,},
 342 };
 343
 344
 345 struct pm860x_irq_data {
 346         int     reg;
 347         int     mask_reg;
 348         int     enable;         /* enable or not */
 349         int     offs;           /* bit offset in mask register */
 350 };
 351
 352 static struct pm860x_irq_data pm860x_irqs[] = {
 353         [PM8607_IRQ_ONKEY] = {
 354                 .reg            = PM8607_INT_STATUS1,
 355                 .mask_reg       = PM8607_INT_MASK_1,
 356                 .offs           = 1 << 0,
 357         },
 358         [PM8607_IRQ_EXTON] = {
 359                 .reg            = PM8607_INT_STATUS1,
 360                 .mask_reg       = PM8607_INT_MASK_1,
 361                 .offs           = 1 << 1,
 362         },
 363         [PM8607_IRQ_CHG] = {
 364                 .reg            = PM8607_INT_STATUS1,
 365                 .mask_reg       = PM8607_INT_MASK_1,
 366                 .offs           = 1 << 2,
 367         },
 368         [PM8607_IRQ_BAT] = {
 369                 .reg            = PM8607_INT_STATUS1,
 370                 .mask_reg       = PM8607_INT_MASK_1,
 371                 .offs           = 1 << 3,
 372         },
 373         [PM8607_IRQ_RTC] = {
 374                 .reg            = PM8607_INT_STATUS1,
 375                 .mask_reg       = PM8607_INT_MASK_1,
 376                 .offs           = 1 << 4,
 377         },
 378         [PM8607_IRQ_CC] = {
 379                 .reg            = PM8607_INT_STATUS1,
 380                 .mask_reg       = PM8607_INT_MASK_1,
 381                 .offs           = 1 << 5,
 382         },
 383         [PM8607_IRQ_VBAT] = {
 384                 .reg            = PM8607_INT_STATUS2,
 385                 .mask_reg       = PM8607_INT_MASK_2,
 386                 .offs           = 1 << 0,
 387         },
 388         [PM8607_IRQ_VCHG] = {
 389                 .reg            = PM8607_INT_STATUS2,
 390                 .mask_reg       = PM8607_INT_MASK_2,
 391                 .offs           = 1 << 1,
 392         },
 393         [PM8607_IRQ_VSYS] = {
 394                 .reg            = PM8607_INT_STATUS2,
 395                 .mask_reg       = PM8607_INT_MASK_2,
 396                 .offs           = 1 << 2,
 397         },
 398         [PM8607_IRQ_TINT] = {
 399                 .reg            = PM8607_INT_STATUS2,
 400                 .mask_reg       = PM8607_INT_MASK_2,
 401                 .offs           = 1 << 3,
 402         },
 403         [PM8607_IRQ_GPADC0] = {
 404                 .reg            = PM8607_INT_STATUS2,
 405                 .mask_reg       = PM8607_INT_MASK_2,
 406                 .offs           = 1 << 4,
 407         },
 408         [PM8607_IRQ_GPADC1] = {
 409                 .reg            = PM8607_INT_STATUS2,
 410                 .mask_reg       = PM8607_INT_MASK_2,
 411                 .offs           = 1 << 5,
 412         },
 413         [PM8607_IRQ_GPADC2] = {
 414                 .reg            = PM8607_INT_STATUS2,
 415                 .mask_reg       = PM8607_INT_MASK_2,
 416                 .offs           = 1 << 6,
 417         },
 418         [PM8607_IRQ_GPADC3] = {
 419                 .reg            = PM8607_INT_STATUS2,
 420                 .mask_reg       = PM8607_INT_MASK_2,
 421                 .offs           = 1 << 7,
 422         },
 423         [PM8607_IRQ_AUDIO_SHORT] = {
 424                 .reg            = PM8607_INT_STATUS3,
 425                 .mask_reg       = PM8607_INT_MASK_3,
 426                 .offs           = 1 << 0,
 427         },
 428         [PM8607_IRQ_PEN] = {
 429                 .reg            = PM8607_INT_STATUS3,
 430                 .mask_reg       = PM8607_INT_MASK_3,
 431                 .offs           = 1 << 1,
 432         },
 433         [PM8607_IRQ_HEADSET] = {
 434                 .reg            = PM8607_INT_STATUS3,
 435                 .mask_reg       = PM8607_INT_MASK_3,
 436                 .offs           = 1 << 2,
 437         },
 438         [PM8607_IRQ_HOOK] = {
 439                 .reg            = PM8607_INT_STATUS3,
 440                 .mask_reg       = PM8607_INT_MASK_3,
 441                 .offs           = 1 << 3,
 442         },
 443         [PM8607_IRQ_MICIN] = {
 444                 .reg            = PM8607_INT_STATUS3,
 445                 .mask_reg       = PM8607_INT_MASK_3,
 446                 .offs           = 1 << 4,
 447         },
 448         [PM8607_IRQ_CHG_FAIL] = {
 449                 .reg            = PM8607_INT_STATUS3,
 450                 .mask_reg       = PM8607_INT_MASK_3,
 451                 .offs           = 1 << 5,
 452         },
 453         [PM8607_IRQ_CHG_DONE] = {
 454                 .reg            = PM8607_INT_STATUS3,
 455                 .mask_reg       = PM8607_INT_MASK_3,
 456                 .offs           = 1 << 6,
 457         },
 458         [PM8607_IRQ_CHG_FAULT] = {
 459                 .reg            = PM8607_INT_STATUS3,
 460                 .mask_reg       = PM8607_INT_MASK_3,
 461                 .offs           = 1 << 7,
 462         },
 463 };
 464
 465 static irqreturn_t pm860x_irq(int irq, void *data)
 466 {
 467         struct pm860x_chip *chip = data;
 468         struct pm860x_irq_data *irq_data;
 469         struct i2c_client *i2c;
 470         int read_reg = -1, value = 0;
 471         int i;
 472
 473         i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
 474         for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
 475                 irq_data = &pm860x_irqs[i];
 476                 if (read_reg != irq_data->reg) {
 477                         read_reg = irq_data->reg;
 478                         value = pm860x_reg_read(i2c, irq_data->reg);
 479                 }
 480                 if (value & irq_data->enable)
 481                         handle_nested_irq(chip->irq_base + i);
 482         }
 483         return IRQ_HANDLED;
 484 }
 485
 486 static void pm860x_irq_lock(struct irq_data *data)
 487 {
 488         struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
 489
 490         mutex_lock(&chip->irq_lock);
 491 }
 492
 493 static void pm860x_irq_sync_unlock(struct irq_data *data)
 494 {
 495         struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
 496         struct pm860x_irq_data *irq_data;
 497         struct i2c_client *i2c;
 498         static unsigned char cached[3] = {0x0, 0x0, 0x0};
 499         unsigned char mask[3];
 500         int i;
 501
 502         i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
 503         /* Load cached value. In initial, all IRQs are masked */
 504         for (i = 0; i < 3; i++)
 505                 mask[i] = cached[i];
 506         for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
 507                 irq_data = &pm860x_irqs[i];
 508                 switch (irq_data->mask_reg) {
 509                 case PM8607_INT_MASK_1:
 510                         mask[0] &= ~irq_data->offs;
 511                         mask[0] |= irq_data->enable;
 512                         break;
 513                 case PM8607_INT_MASK_2:
 514                         mask[1] &= ~irq_data->offs;
 515                         mask[1] |= irq_data->enable;
 516                         break;
 517                 case PM8607_INT_MASK_3:
 518                         mask[2] &= ~irq_data->offs;
 519                         mask[2] |= irq_data->enable;
 520                         break;
 521                 default:
 522                         dev_err(chip->dev, "wrong IRQ\n");
 523                         break;
 524                 }
 525         }
 526         /* update mask into registers */
 527         for (i = 0; i < 3; i++) {
 528                 if (mask[i] != cached[i]) {
 529                         cached[i] = mask[i];
 530                         pm860x_reg_write(i2c, PM8607_INT_MASK_1 + i, mask[i]);
 531                 }
 532         }
 533
 534         mutex_unlock(&chip->irq_lock);
 535 }
 536
 537 static void pm860x_irq_enable(struct irq_data *data)
 538 {
 539         pm860x_irqs[data->hwirq].enable = pm860x_irqs[data->hwirq].offs;
 540 }
 541
 542 static void pm860x_irq_disable(struct irq_data *data)
 543 {
 544         pm860x_irqs[data->hwirq].enable = 0;
 545 }
 546
 547 static struct irq_chip pm860x_irq_chip = {
 548         .name           = "88pm860x",
 549         .irq_bus_lock   = pm860x_irq_lock,
 550         .irq_bus_sync_unlock = pm860x_irq_sync_unlock,
 551         .irq_enable     = pm860x_irq_enable,
 552         .irq_disable    = pm860x_irq_disable,
 553 };
 554
 555 static int pm860x_irq_domain_map(struct irq_domain *d, unsigned int virq,
 556                                  irq_hw_number_t hw)
 557 {
 558         irq_set_chip_data(virq, d->host_data);
 559         irq_set_chip_and_handler(virq, &pm860x_irq_chip, handle_edge_irq);
 560         irq_set_nested_thread(virq, 1);
 561         irq_set_noprobe(virq);
 562         return 0;
 563 }
 564
 565 static const struct irq_domain_ops pm860x_irq_domain_ops = {
 566         .map    = pm860x_irq_domain_map,
 567         .xlate  = irq_domain_xlate_onetwocell,
 568 };
 569
 570 static int device_irq_init(struct pm860x_chip *chip,
 571                                      struct pm860x_platform_data *pdata)
 572 {
 573         struct i2c_client *i2c = (chip->id == CHIP_PM8607) ?
 574                 chip->client : chip->companion;
 575         unsigned char status_buf[INT_STATUS_NUM];
 576         unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
 577         int data, mask, ret = -EINVAL;
 578         int nr_irqs, irq_base = -1;
 579         struct device_node *node = i2c->dev.of_node;
 580
 581         mask = PM8607_B0_MISC1_INV_INT | PM8607_B0_MISC1_INT_CLEAR
 582                 | PM8607_B0_MISC1_INT_MASK;
 583         data = 0;
 584         chip->irq_mode = 0;
 585         if (pdata && pdata->irq_mode) {
 586                 /*
 587                  * irq_mode defines the way of clearing interrupt. If it's 1,
 588                  * clear IRQ by write. Otherwise, clear it by read.
 589                  * This control bit is valid from 88PM8607 B0 steping.
 590                  */
 591                 data |= PM8607_B0_MISC1_INT_CLEAR;
 592                 chip->irq_mode = 1;
 593         }
 594         ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, mask, data);
 595         if (ret < 0)
 596                 goto out;
 597
 598         /* mask all IRQs */
 599         memset(status_buf, 0, INT_STATUS_NUM);
 600         ret = pm860x_bulk_write(i2c, PM8607_INT_MASK_1,
 601                                 INT_STATUS_NUM, status_buf);
 602         if (ret < 0)
 603                 goto out;
 604
 605         if (chip->irq_mode) {
 606                 /* clear interrupt status by write */
 607                 memset(status_buf, 0xFF, INT_STATUS_NUM);
 608                 ret = pm860x_bulk_write(i2c, PM8607_INT_STATUS1,
 609                                         INT_STATUS_NUM, status_buf);
 610         } else {
 611                 /* clear interrupt status by read */
 612                 ret = pm860x_bulk_read(i2c, PM8607_INT_STATUS1,
 613                                         INT_STATUS_NUM, status_buf);
 614         }
 615         if (ret < 0)
 616                 goto out;
 617
 618         mutex_init(&chip->irq_lock);
 619
 620         if (pdata && pdata->irq_base)
 621                 irq_base = pdata->irq_base;
 622         nr_irqs = ARRAY_SIZE(pm860x_irqs);
 623         chip->irq_base = irq_alloc_descs(irq_base, 0, nr_irqs, 0);
 624         if (chip->irq_base < 0) {
 625                 dev_err(&i2c->dev, "Failed to allocate interrupts, ret:%d\n",
 626                         chip->irq_base);
 627                 ret = -EBUSY;
 628                 goto out;
 629         }
 630         irq_domain_add_legacy(node, nr_irqs, chip->irq_base, 0,
 631                               &pm860x_irq_domain_ops, chip);
 632         chip->core_irq = i2c->irq;
 633         if (!chip->core_irq)
 634                 goto out;
 635
 636         ret = request_threaded_irq(chip->core_irq, NULL, pm860x_irq,
 637                                    flags | IRQF_ONESHOT, "88pm860x", chip);
 638         if (ret) {
 639                 dev_err(chip->dev, "Failed to request IRQ: %d\n", ret);
 640                 chip->core_irq = 0;
 641         }
 642
 643         return 0;
 644 out:
 645         chip->core_irq = 0;
 646         return ret;
 647 }
 648
 649 static void device_irq_exit(struct pm860x_chip *chip)
 650 {
 651         if (chip->core_irq)
 652                 free_irq(chip->core_irq, chip);
 653 }
 654
 655 int pm8606_osc_enable(struct pm860x_chip *chip, unsigned short client)
 656 {
 657         int ret = -EIO;
 658         struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
 659                 chip->client : chip->companion;
 660
 661         dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
 662         dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
 663                         __func__, chip->osc_vote,
 664                         chip->osc_status);
 665
 666         mutex_lock(&chip->osc_lock);
 667         /* Update voting status */
 668         chip->osc_vote |= client;
 669         /* If reference group is off - turn on*/
 670         if (chip->osc_status != PM8606_REF_GP_OSC_ON) {
 671                 chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
 672                 /* Enable Reference group Vsys */
 673                 if (pm860x_set_bits(i2c, PM8606_VSYS,
 674                                 PM8606_VSYS_EN, PM8606_VSYS_EN))
 675                         goto out;
 676
 677                 /*Enable Internal Oscillator */
 678                 if (pm860x_set_bits(i2c, PM8606_MISC,
 679                                 PM8606_MISC_OSC_EN, PM8606_MISC_OSC_EN))
 680                         goto out;
 681                 /* Update status (only if writes succeed) */
 682                 chip->osc_status = PM8606_REF_GP_OSC_ON;
 683         }
 684         mutex_unlock(&chip->osc_lock);
 685
 686         dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
 687                         __func__, chip->osc_vote,
 688                         chip->osc_status, ret);
 689         return 0;
 690 out:
 691         mutex_unlock(&chip->osc_lock);
 692         return ret;
 693 }
 694 EXPORT_SYMBOL(pm8606_osc_enable);
 695
 696 int pm8606_osc_disable(struct pm860x_chip *chip, unsigned short client)
 697 {
 698         int ret = -EIO;
 699         struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
 700                 chip->client : chip->companion;
 701
 702         dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
 703         dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
 704                         __func__, chip->osc_vote,
 705                         chip->osc_status);
 706
 707         mutex_lock(&chip->osc_lock);
 708         /*Update voting status */
 709         chip->osc_vote &= ~(client);
 710         /* If reference group is off and this is the last client to release
 711          * - turn off */
 712         if ((chip->osc_status != PM8606_REF_GP_OSC_OFF) &&
 713                         (chip->osc_vote == REF_GP_NO_CLIENTS)) {
 714                 chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
 715                 /* Disable Reference group Vsys */
 716                 if (pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0))
 717                         goto out;
 718                 /* Disable Internal Oscillator */
 719                 if (pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0))
 720                         goto out;
 721                 chip->osc_status = PM8606_REF_GP_OSC_OFF;
 722         }
 723         mutex_unlock(&chip->osc_lock);
 724
 725         dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
 726                         __func__, chip->osc_vote,
 727                         chip->osc_status, ret);
 728         return 0;
 729 out:
 730         mutex_unlock(&chip->osc_lock);
 731         return ret;
 732 }
 733 EXPORT_SYMBOL(pm8606_osc_disable);
 734
 735 static void device_osc_init(struct i2c_client *i2c)
 736 {
 737         struct pm860x_chip *chip = i2c_get_clientdata(i2c);
 738
 739         mutex_init(&chip->osc_lock);
 740         /* init portofino reference group voting and status */
 741         /* Disable Reference group Vsys */
 742         pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0);
 743         /* Disable Internal Oscillator */
 744         pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0);
 745
 746         chip->osc_vote = REF_GP_NO_CLIENTS;
 747         chip->osc_status = PM8606_REF_GP_OSC_OFF;
 748 }
 749
 750 static void device_bk_init(struct pm860x_chip *chip,
 751                                      struct pm860x_platform_data *pdata)
 752 {
 753         int ret, i;
 754
 755         if (pdata && pdata->backlight) {
 756                 if (pdata->num_backlights > ARRAY_SIZE(bk_devs))
 757                         pdata->num_backlights = ARRAY_SIZE(bk_devs);
 758                 for (i = 0; i < pdata->num_backlights; i++) {
 759                         bk_devs[i].platform_data = &pdata->backlight[i];
 760                         bk_devs[i].pdata_size =
 761                                 sizeof(struct pm860x_backlight_pdata);
 762                 }
 763         }
 764         ret = mfd_add_devices(chip->dev, 0, bk_devs,
 765                               ARRAY_SIZE(bk_devs), NULL, 0, NULL);
 766         if (ret < 0)
 767                 dev_err(chip->dev, "Failed to add backlight subdev\n");
 768 }
 769
 770 static void device_led_init(struct pm860x_chip *chip,
 771                                       struct pm860x_platform_data *pdata)
 772 {
 773         int ret, i;
 774
 775         if (pdata && pdata->led) {
 776                 if (pdata->num_leds > ARRAY_SIZE(led_devs))
 777                         pdata->num_leds = ARRAY_SIZE(led_devs);
 778                 for (i = 0; i < pdata->num_leds; i++) {
 779                         led_devs[i].platform_data = &pdata->led[i];
 780                         led_devs[i].pdata_size =
 781                                 sizeof(struct pm860x_led_pdata);
 782                 }
 783         }
 784         ret = mfd_add_devices(chip->dev, 0, led_devs,
 785                               ARRAY_SIZE(led_devs), NULL, 0, NULL);
 786         if (ret < 0) {
 787                 dev_err(chip->dev, "Failed to add led subdev\n");
 788                 return;
 789         }
 790 }
 791
 792 static void device_regulator_init(struct pm860x_chip *chip,
 793                                             struct pm860x_platform_data *pdata)
 794 {
 795         int ret;
 796
 797         if (pdata == NULL)
 798                 return;
 799         if (pdata->buck1) {
 800                 reg_devs[0].platform_data = pdata->buck1;
 801                 reg_devs[0].pdata_size = sizeof(struct regulator_init_data);
 802         }
 803         if (pdata->buck2) {
 804                 reg_devs[1].platform_data = pdata->buck2;
 805                 reg_devs[1].pdata_size = sizeof(struct regulator_init_data);
 806         }
 807         if (pdata->buck3) {
 808                 reg_devs[2].platform_data = pdata->buck3;
 809                 reg_devs[2].pdata_size = sizeof(struct regulator_init_data);
 810         }
 811         if (pdata->ldo1) {
 812                 reg_devs[3].platform_data = pdata->ldo1;
 813                 reg_devs[3].pdata_size = sizeof(struct regulator_init_data);
 814         }
 815         if (pdata->ldo2) {
 816                 reg_devs[4].platform_data = pdata->ldo2;
 817                 reg_devs[4].pdata_size = sizeof(struct regulator_init_data);
 818         }
 819         if (pdata->ldo3) {
 820                 reg_devs[5].platform_data = pdata->ldo3;
 821                 reg_devs[5].pdata_size = sizeof(struct regulator_init_data);
 822         }
 823         if (pdata->ldo4) {
 824                 reg_devs[6].platform_data = pdata->ldo4;
 825                 reg_devs[6].pdata_size = sizeof(struct regulator_init_data);
 826         }
 827         if (pdata->ldo5) {
 828                 reg_devs[7].platform_data = pdata->ldo5;
 829                 reg_devs[7].pdata_size = sizeof(struct regulator_init_data);
 830         }
 831         if (pdata->ldo6) {
 832                 reg_devs[8].platform_data = pdata->ldo6;
 833                 reg_devs[8].pdata_size = sizeof(struct regulator_init_data);
 834         }
 835         if (pdata->ldo7) {
 836                 reg_devs[9].platform_data = pdata->ldo7;
 837                 reg_devs[9].pdata_size = sizeof(struct regulator_init_data);
 838         }
 839         if (pdata->ldo8) {
 840                 reg_devs[10].platform_data = pdata->ldo8;
 841                 reg_devs[10].pdata_size = sizeof(struct regulator_init_data);
 842         }
 843         if (pdata->ldo9) {
 844                 reg_devs[11].platform_data = pdata->ldo9;
 845                 reg_devs[11].pdata_size = sizeof(struct regulator_init_data);
 846         }
 847         if (pdata->ldo10) {
 848                 reg_devs[12].platform_data = pdata->ldo10;
 849                 reg_devs[12].pdata_size = sizeof(struct regulator_init_data);
 850         }
 851         if (pdata->ldo12) {
 852                 reg_devs[13].platform_data = pdata->ldo12;
 853                 reg_devs[13].pdata_size = sizeof(struct regulator_init_data);
 854         }
 855         if (pdata->ldo_vibrator) {
 856                 reg_devs[14].platform_data = pdata->ldo_vibrator;
 857                 reg_devs[14].pdata_size = sizeof(struct regulator_init_data);
 858         }
 859         if (pdata->ldo14) {
 860                 reg_devs[15].platform_data = pdata->ldo14;
 861                 reg_devs[15].pdata_size = sizeof(struct regulator_init_data);
 862         }
 863         ret = mfd_add_devices(chip->dev, 0, reg_devs,
 864                               ARRAY_SIZE(reg_devs), NULL, 0, NULL);
 865         if (ret < 0) {
 866                 dev_err(chip->dev, "Failed to add regulator subdev\n");
 867                 return;
 868         }
 869 }
 870
 871 static void device_rtc_init(struct pm860x_chip *chip,
 872                                       struct pm860x_platform_data *pdata)
 873 {
 874         int ret;
 875
 876         if (!pdata)
 877                 return;
 878
 879         rtc_devs[0].platform_data = pdata->rtc;
 880         rtc_devs[0].pdata_size = sizeof(struct pm860x_rtc_pdata);
 881         rtc_devs[0].num_resources = ARRAY_SIZE(rtc_resources);
 882         rtc_devs[0].resources = &rtc_resources[0];
 883         ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
 884                               ARRAY_SIZE(rtc_devs), &rtc_resources[0],
 885                               chip->irq_base, NULL);
 886         if (ret < 0)
 887                 dev_err(chip->dev, "Failed to add rtc subdev\n");
 888 }
 889
 890 static void device_touch_init(struct pm860x_chip *chip,
 891                                         struct pm860x_platform_data *pdata)
 892 {
 893         int ret;
 894
 895         if (pdata == NULL)
 896                 return;
 897
 898         touch_devs[0].platform_data = pdata->touch;
 899         touch_devs[0].pdata_size = sizeof(struct pm860x_touch_pdata);
 900         touch_devs[0].num_resources = ARRAY_SIZE(touch_resources);
 901         touch_devs[0].resources = &touch_resources[0];
 902         ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
 903                               ARRAY_SIZE(touch_devs), &touch_resources[0],
 904                               chip->irq_base, NULL);
 905         if (ret < 0)
 906                 dev_err(chip->dev, "Failed to add touch subdev\n");
 907 }
 908
 909 static void device_power_init(struct pm860x_chip *chip,
 910                                         struct pm860x_platform_data *pdata)
 911 {
 912         int ret;
 913
 914         if (pdata == NULL)
 915                 return;
 916
 917         power_devs[0].platform_data = pdata->power;
 918         power_devs[0].pdata_size = sizeof(struct pm860x_power_pdata);
 919         power_devs[0].num_resources = ARRAY_SIZE(battery_resources);
 920         power_devs[0].resources = &battery_resources[0],
 921         ret = mfd_add_devices(chip->dev, 0, &power_devs[0], 1,
 922                               &battery_resources[0], chip->irq_base, NULL);
 923         if (ret < 0)
 924                 dev_err(chip->dev, "Failed to add battery subdev\n");
 925
 926         power_devs[1].platform_data = pdata->power;
 927         power_devs[1].pdata_size = sizeof(struct pm860x_power_pdata);
 928         power_devs[1].num_resources = ARRAY_SIZE(charger_resources);
 929         power_devs[1].resources = &charger_resources[0],
 930         ret = mfd_add_devices(chip->dev, 0, &power_devs[1], 1,
 931                               &charger_resources[0], chip->irq_base, NULL);
 932         if (ret < 0)
 933                 dev_err(chip->dev, "Failed to add charger subdev\n");
 934
 935         power_devs[2].platform_data = &preg_init_data;
 936         power_devs[2].pdata_size = sizeof(struct regulator_init_data);
 937         ret = mfd_add_devices(chip->dev, 0, &power_devs[2], 1,
 938                               NULL, chip->irq_base, NULL);
 939         if (ret < 0)
 940                 dev_err(chip->dev, "Failed to add preg subdev\n");
 941
 942         if (pdata->chg_desc) {
 943                 pdata->chg_desc->charger_regulators =
 944                         &chg_desc_regulator_data[0];
 945                 pdata->chg_desc->num_charger_regulators =
 946                         ARRAY_SIZE(chg_desc_regulator_data),
 947                 power_devs[3].platform_data = pdata->chg_desc;
 948                 power_devs[3].pdata_size = sizeof(*pdata->chg_desc);
 949                 ret = mfd_add_devices(chip->dev, 0, &power_devs[3], 1,
 950                                       NULL, chip->irq_base, NULL);
 951                 if (ret < 0)
 952                         dev_err(chip->dev, "Failed to add chg-manager subdev\n");
 953         }
 954 }
 955
 956 static void device_onkey_init(struct pm860x_chip *chip,
 957                                         struct pm860x_platform_data *pdata)
 958 {
 959         int ret;
 960
 961         onkey_devs[0].num_resources = ARRAY_SIZE(onkey_resources);
 962         onkey_devs[0].resources = &onkey_resources[0],
 963         ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
 964                               ARRAY_SIZE(onkey_devs), &onkey_resources[0],
 965                               chip->irq_base, NULL);
 966         if (ret < 0)
 967                 dev_err(chip->dev, "Failed to add onkey subdev\n");
 968 }
 969
 970 static void device_codec_init(struct pm860x_chip *chip,
 971                                         struct pm860x_platform_data *pdata)
 972 {
 973         int ret;
 974
 975         codec_devs[0].num_resources = ARRAY_SIZE(codec_resources);
 976         codec_devs[0].resources = &codec_resources[0],
 977         ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
 978                               ARRAY_SIZE(codec_devs), &codec_resources[0], 0,
 979                               NULL);
 980         if (ret < 0)
 981                 dev_err(chip->dev, "Failed to add codec subdev\n");
 982 }
 983
 984 static void device_8607_init(struct pm860x_chip *chip,
 985                                        struct i2c_client *i2c,
 986                                        struct pm860x_platform_data *pdata)
 987 {
 988         int data, ret;
 989
 990         ret = pm860x_reg_read(i2c, PM8607_CHIP_ID);
 991         if (ret < 0) {
 992                 dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
 993                 goto out;
 994         }
 995         switch (ret & PM8607_VERSION_MASK) {
 996         case 0x40:
 997         case 0x50:
 998                 dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
 999                          ret);
1000                 break;
1001         default:
1002                 dev_err(chip->dev,
1003                         "Failed to detect Marvell 88PM8607. Chip ID: %02x\n",
1004                         ret);
1005                 goto out;
1006         }
1007
1008         ret = pm860x_reg_read(i2c, PM8607_BUCK3);
1009         if (ret < 0) {
1010                 dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
1011                 goto out;
1012         }
1013         if (ret & PM8607_BUCK3_DOUBLE)
1014                 chip->buck3_double = 1;
1015
1016         ret = pm860x_reg_read(i2c, PM8607_B0_MISC1);
1017         if (ret < 0) {
1018                 dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
1019                 goto out;
1020         }
1021
1022         if (pdata && (pdata->i2c_port == PI2C_PORT))
1023                 data = PM8607_B0_MISC1_PI2C;
1024         else
1025                 data = 0;
1026         ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, PM8607_B0_MISC1_PI2C, data);
1027         if (ret < 0) {
1028                 dev_err(chip->dev, "Failed to access MISC1:%d\n", ret);
1029                 goto out;
1030         }
1031
1032         ret = device_irq_init(chip, pdata);
1033         if (ret < 0)
1034                 goto out;
1035
1036         device_regulator_init(chip, pdata);
1037         device_rtc_init(chip, pdata);
1038         device_onkey_init(chip, pdata);
1039         device_touch_init(chip, pdata);
1040         device_power_init(chip, pdata);
1041         device_codec_init(chip, pdata);
1042 out:
1043         return;
1044 }
1045
1046 static void device_8606_init(struct pm860x_chip *chip,
1047                                        struct i2c_client *i2c,
1048                                        struct pm860x_platform_data *pdata)
1049 {
1050         device_osc_init(i2c);
1051         device_bk_init(chip, pdata);
1052         device_led_init(chip, pdata);
1053 }
1054
1055 static int pm860x_device_init(struct pm860x_chip *chip,
1056                                         struct pm860x_platform_data *pdata)
1057 {
1058         chip->core_irq = 0;
1059
1060         switch (chip->id) {
1061         case CHIP_PM8606:
1062                 device_8606_init(chip, chip->client, pdata);
1063                 break;
1064         case CHIP_PM8607:
1065                 device_8607_init(chip, chip->client, pdata);
1066                 break;
1067         }
1068
1069         if (chip->companion) {
1070                 switch (chip->id) {
1071                 case CHIP_PM8607:
1072                         device_8606_init(chip, chip->companion, pdata);
1073                         break;
1074                 case CHIP_PM8606:
1075                         device_8607_init(chip, chip->companion, pdata);
1076                         break;
1077                 }
1078         }
1079
1080         return 0;
1081 }
1082
1083 static void pm860x_device_exit(struct pm860x_chip *chip)
1084 {
1085         device_irq_exit(chip);
1086         mfd_remove_devices(chip->dev);
1087 }
1088
1089 static int verify_addr(struct i2c_client *i2c)
1090 {
1091         unsigned short addr_8607[] = {0x30, 0x34};
1092         unsigned short addr_8606[] = {0x10, 0x11};
1093         int size, i;
1094
1095         if (i2c == NULL)
1096                 return 0;
1097         size = ARRAY_SIZE(addr_8606);
1098         for (i = 0; i < size; i++) {
1099                 if (i2c->addr == *(addr_8606 + i))
1100                         return CHIP_PM8606;
1101         }
1102         size = ARRAY_SIZE(addr_8607);
1103         for (i = 0; i < size; i++) {
1104                 if (i2c->addr == *(addr_8607 + i))
1105                         return CHIP_PM8607;
1106         }
1107         return 0;
1108 }
1109
1110 static const struct regmap_config pm860x_regmap_config = {
1111         .reg_bits = 8,
1112         .val_bits = 8,
1113 };
1114
1115 static int pm860x_dt_init(struct device_node *np,
1116                                     struct device *dev,
1117                                     struct pm860x_platform_data *pdata)
1118 {
1119         int ret;
1120
1121         if (of_get_property(np, "marvell,88pm860x-irq-read-clr", NULL))
1122                 pdata->irq_mode = 1;
1123         ret = of_property_read_u32(np, "marvell,88pm860x-slave-addr",
1124                                    &pdata->companion_addr);
1125         if (ret) {
1126                 dev_err(dev,
1127                         "Not found \"marvell,88pm860x-slave-addr\" property\n");
1128                 pdata->companion_addr = 0;
1129         }
1130         return 0;
1131 }
1132
1133 static int pm860x_probe(struct i2c_client *client,
1134                                   const struct i2c_device_id *id)
1135 {
1136         struct pm860x_platform_data *pdata = dev_get_platdata(&client->dev);
1137         struct device_node *node = client->dev.of_node;
1138         struct pm860x_chip *chip;
1139         int ret;
1140
1141         if (node && !pdata) {
1142                 /* parse DT to get platform data */
1143                 pdata = devm_kzalloc(&client->dev,
1144                                      sizeof(struct pm860x_platform_data),
1145                                      GFP_KERNEL);
1146                 if (!pdata)
1147                         return -ENOMEM;
1148                 ret = pm860x_dt_init(node, &client->dev, pdata);
1149                 if (ret)
1150                         return ret;
1151         } else if (!pdata) {
1152                 pr_info("No platform data in %s!\n", __func__);
1153                 return -EINVAL;
1154         }
1155
1156         chip = devm_kzalloc(&client->dev,
1157                             sizeof(struct pm860x_chip), GFP_KERNEL);
1158         if (chip == NULL)
1159                 return -ENOMEM;
1160
1161         chip->id = verify_addr(client);
1162         chip->regmap = devm_regmap_init_i2c(client, &pm860x_regmap_config);
1163         if (IS_ERR(chip->regmap)) {
1164                 ret = PTR_ERR(chip->regmap);
1165                 dev_err(&client->dev, "Failed to allocate register map: %d\n",
1166                                 ret);
1167                 return ret;
1168         }
1169         chip->client = client;
1170         i2c_set_clientdata(client, chip);
1171         chip->dev = &client->dev;
1172         dev_set_drvdata(chip->dev, chip);
1173
1174         /*
1175          * Both client and companion client shares same platform driver.
1176          * Driver distinguishes them by pdata->companion_addr.
1177          * pdata->companion_addr is only assigned if companion chip exists.
1178          * At the same time, the companion_addr shouldn't equal to client
1179          * address.
1180          */
1181         if (pdata->companion_addr && (pdata->companion_addr != client->addr)) {
1182                 chip->companion_addr = pdata->companion_addr;
1183                 chip->companion = i2c_new_dummy(chip->client->adapter,
1184                                                 chip->companion_addr);
1185                 if (!chip->companion) {
1186                         dev_err(&client->dev,
1187                                 "Failed to allocate I2C companion device\n");
1188                         return -ENODEV;
1189                 }
1190                 chip->regmap_companion = regmap_init_i2c(chip->companion,
1191                                                         &pm860x_regmap_config);
1192                 if (IS_ERR(chip->regmap_companion)) {
1193                         ret = PTR_ERR(chip->regmap_companion);
1194                         dev_err(&chip->companion->dev,
1195                                 "Failed to allocate register map: %d\n", ret);
1196                         i2c_unregister_device(chip->companion);
1197                         return ret;
1198                 }
1199                 i2c_set_clientdata(chip->companion, chip);
1200         }
1201
1202         pm860x_device_init(chip, pdata);
1203         return 0;
1204 }
1205
1206 static int pm860x_remove(struct i2c_client *client)
1207 {
1208         struct pm860x_chip *chip = i2c_get_clientdata(client);
1209
1210         pm860x_device_exit(chip);
1211         if (chip->companion) {
1212                 regmap_exit(chip->regmap_companion);
1213                 i2c_unregister_device(chip->companion);
1214         }
1215         return 0;
1216 }
1217
1218 #ifdef CONFIG_PM_SLEEP
1219 static int pm860x_suspend(struct device *dev)
1220 {
1221         struct i2c_client *client = container_of(dev, struct i2c_client, dev);
1222         struct pm860x_chip *chip = i2c_get_clientdata(client);
1223
1224         if (device_may_wakeup(dev) && chip->wakeup_flag)
1225                 enable_irq_wake(chip->core_irq);
1226         return 0;
1227 }
1228
1229 static int pm860x_resume(struct device *dev)
1230 {
1231         struct i2c_client *client = container_of(dev, struct i2c_client, dev);
1232         struct pm860x_chip *chip = i2c_get_clientdata(client);
1233
1234         if (device_may_wakeup(dev) && chip->wakeup_flag)
1235                 disable_irq_wake(chip->core_irq);
1236         return 0;
1237 }
1238 #endif
1239
1240 static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
1241
1242 static const struct i2c_device_id pm860x_id_table[] = {
1243         { "88PM860x", 0 },
1244         {}
1245 };
1246 MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
1247
1248 static const struct of_device_id pm860x_dt_ids[] = {
1249         { .compatible = "marvell,88pm860x", },
1250         {},
1251 };
1252 MODULE_DEVICE_TABLE(of, pm860x_dt_ids);
1253
1254 static struct i2c_driver pm860x_driver = {
1255         .driver = {
1256                 .name   = "88PM860x",
1257                 .pm     = &pm860x_pm_ops,
1258                 .of_match_table = 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");