drivers/mfd/ab8500-core.c

   1 /*
   2  * Copyright (C) ST-Ericsson SA 2010
   3  *
   4  * License Terms: GNU General Public License v2
   5  * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
   6  * Author: Rabin Vincent <rabin.vincent@stericsson.com>
   7  * Author: Mattias Wallin <mattias.wallin@stericsson.com>
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/slab.h>
  12 #include <linux/init.h>
  13 #include <linux/irq.h>
  14 #include <linux/irqdomain.h>
  15 #include <linux/delay.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/module.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/mfd/core.h>
  20 #include <linux/mfd/abx500.h>
  21 #include <linux/mfd/abx500/ab8500.h>
  22 #include <linux/mfd/dbx500-prcmu.h>
  23 #include <linux/regulator/ab8500.h>
  24 #include <linux/of.h>
  25 #include <linux/of_device.h>
  26
  27 /*
  28  * Interrupt register offsets
  29  * Bank : 0x0E
  30  */
  31 #define AB8500_IT_SOURCE1_REG           0x00
  32 #define AB8500_IT_SOURCE2_REG           0x01
  33 #define AB8500_IT_SOURCE3_REG           0x02
  34 #define AB8500_IT_SOURCE4_REG           0x03
  35 #define AB8500_IT_SOURCE5_REG           0x04
  36 #define AB8500_IT_SOURCE6_REG           0x05
  37 #define AB8500_IT_SOURCE7_REG           0x06
  38 #define AB8500_IT_SOURCE8_REG           0x07
  39 #define AB9540_IT_SOURCE13_REG          0x0C
  40 #define AB8500_IT_SOURCE19_REG          0x12
  41 #define AB8500_IT_SOURCE20_REG          0x13
  42 #define AB8500_IT_SOURCE21_REG          0x14
  43 #define AB8500_IT_SOURCE22_REG          0x15
  44 #define AB8500_IT_SOURCE23_REG          0x16
  45 #define AB8500_IT_SOURCE24_REG          0x17
  46
  47 /*
  48  * latch registers
  49  */
  50 #define AB8500_IT_LATCH1_REG            0x20
  51 #define AB8500_IT_LATCH2_REG            0x21
  52 #define AB8500_IT_LATCH3_REG            0x22
  53 #define AB8500_IT_LATCH4_REG            0x23
  54 #define AB8500_IT_LATCH5_REG            0x24
  55 #define AB8500_IT_LATCH6_REG            0x25
  56 #define AB8500_IT_LATCH7_REG            0x26
  57 #define AB8500_IT_LATCH8_REG            0x27
  58 #define AB8500_IT_LATCH9_REG            0x28
  59 #define AB8500_IT_LATCH10_REG           0x29
  60 #define AB8500_IT_LATCH12_REG           0x2B
  61 #define AB9540_IT_LATCH13_REG           0x2C
  62 #define AB8500_IT_LATCH19_REG           0x32
  63 #define AB8500_IT_LATCH20_REG           0x33
  64 #define AB8500_IT_LATCH21_REG           0x34
  65 #define AB8500_IT_LATCH22_REG           0x35
  66 #define AB8500_IT_LATCH23_REG           0x36
  67 #define AB8500_IT_LATCH24_REG           0x37
  68
  69 /*
  70  * mask registers
  71  */
  72
  73 #define AB8500_IT_MASK1_REG             0x40
  74 #define AB8500_IT_MASK2_REG             0x41
  75 #define AB8500_IT_MASK3_REG             0x42
  76 #define AB8500_IT_MASK4_REG             0x43
  77 #define AB8500_IT_MASK5_REG             0x44
  78 #define AB8500_IT_MASK6_REG             0x45
  79 #define AB8500_IT_MASK7_REG             0x46
  80 #define AB8500_IT_MASK8_REG             0x47
  81 #define AB8500_IT_MASK9_REG             0x48
  82 #define AB8500_IT_MASK10_REG            0x49
  83 #define AB8500_IT_MASK11_REG            0x4A
  84 #define AB8500_IT_MASK12_REG            0x4B
  85 #define AB8500_IT_MASK13_REG            0x4C
  86 #define AB8500_IT_MASK14_REG            0x4D
  87 #define AB8500_IT_MASK15_REG            0x4E
  88 #define AB8500_IT_MASK16_REG            0x4F
  89 #define AB8500_IT_MASK17_REG            0x50
  90 #define AB8500_IT_MASK18_REG            0x51
  91 #define AB8500_IT_MASK19_REG            0x52
  92 #define AB8500_IT_MASK20_REG            0x53
  93 #define AB8500_IT_MASK21_REG            0x54
  94 #define AB8500_IT_MASK22_REG            0x55
  95 #define AB8500_IT_MASK23_REG            0x56
  96 #define AB8500_IT_MASK24_REG            0x57
  97
  98 /*
  99  * latch hierarchy registers
 100  */
 101 #define AB8500_IT_LATCHHIER1_REG        0x60
 102 #define AB8500_IT_LATCHHIER2_REG        0x61
 103 #define AB8500_IT_LATCHHIER3_REG        0x62
 104
 105 #define AB8500_IT_LATCHHIER_NUM         3
 106
 107 #define AB8500_REV_REG                  0x80
 108 #define AB8500_IC_NAME_REG              0x82
 109 #define AB8500_SWITCH_OFF_STATUS        0x00
 110
 111 #define AB8500_TURN_ON_STATUS           0x00
 112
 113 static bool no_bm; /* No battery management */
 114 module_param(no_bm, bool, S_IRUGO);
 115
 116 #define AB9540_MODEM_CTRL2_REG                  0x23
 117 #define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT        BIT(2)
 118
 119 /*
 120  * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
 121  * numbers are indexed into this array with (num / 8). The interupts are
 122  * defined in linux/mfd/ab8500.h
 123  *
 124  * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
 125  * offset 0.
 126  */
 127 /* AB8500 support */
 128 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
 129         0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
 130 };
 131
 132 /* AB9540 support */
 133 static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
 134         0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24,
 135 };
 136
 137 static const char ab8500_version_str[][7] = {
 138         [AB8500_VERSION_AB8500] = "AB8500",
 139         [AB8500_VERSION_AB8505] = "AB8505",
 140         [AB8500_VERSION_AB9540] = "AB9540",
 141         [AB8500_VERSION_AB8540] = "AB8540",
 142 };
 143
 144 static int ab8500_prcmu_write(struct ab8500 *ab8500, u16 addr, u8 data)
 145 {
 146         int ret;
 147
 148         ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
 149         if (ret < 0)
 150                 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
 151         return ret;
 152 }
 153
 154 static int ab8500_prcmu_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask,
 155         u8 data)
 156 {
 157         int ret;
 158
 159         ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data,
 160                 &mask, 1);
 161         if (ret < 0)
 162                 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
 163         return ret;
 164 }
 165
 166 static int ab8500_prcmu_read(struct ab8500 *ab8500, u16 addr)
 167 {
 168         int ret;
 169         u8 data;
 170
 171         ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
 172         if (ret < 0) {
 173                 dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
 174                 return ret;
 175         }
 176         return (int)data;
 177 }
 178
 179 static int ab8500_get_chip_id(struct device *dev)
 180 {
 181         struct ab8500 *ab8500;
 182
 183         if (!dev)
 184                 return -EINVAL;
 185         ab8500 = dev_get_drvdata(dev->parent);
 186         return ab8500 ? (int)ab8500->chip_id : -EINVAL;
 187 }
 188
 189 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
 190         u8 reg, u8 data)
 191 {
 192         int ret;
 193         /*
 194          * Put the u8 bank and u8 register together into a an u16.
 195          * The bank on higher 8 bits and register in lower 8 bits.
 196          * */
 197         u16 addr = ((u16)bank) << 8 | reg;
 198
 199         dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
 200
 201         mutex_lock(&ab8500->lock);
 202
 203         ret = ab8500->write(ab8500, addr, data);
 204         if (ret < 0)
 205                 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
 206                         addr, ret);
 207         mutex_unlock(&ab8500->lock);
 208
 209         return ret;
 210 }
 211
 212 static int ab8500_set_register(struct device *dev, u8 bank,
 213         u8 reg, u8 value)
 214 {
 215         int ret;
 216         struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 217
 218         atomic_inc(&ab8500->transfer_ongoing);
 219         ret = set_register_interruptible(ab8500, bank, reg, value);
 220         atomic_dec(&ab8500->transfer_ongoing);
 221         return ret;
 222 }
 223
 224 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
 225         u8 reg, u8 *value)
 226 {
 227         int ret;
 228         /* put the u8 bank and u8 reg together into a an u16.
 229          * bank on higher 8 bits and reg in lower */
 230         u16 addr = ((u16)bank) << 8 | reg;
 231
 232         mutex_lock(&ab8500->lock);
 233
 234         ret = ab8500->read(ab8500, addr);
 235         if (ret < 0)
 236                 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
 237                         addr, ret);
 238         else
 239                 *value = ret;
 240
 241         mutex_unlock(&ab8500->lock);
 242         dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
 243
 244         return ret;
 245 }
 246
 247 static int ab8500_get_register(struct device *dev, u8 bank,
 248         u8 reg, u8 *value)
 249 {
 250         int ret;
 251         struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 252
 253         atomic_inc(&ab8500->transfer_ongoing);
 254         ret = get_register_interruptible(ab8500, bank, reg, value);
 255         atomic_dec(&ab8500->transfer_ongoing);
 256         return ret;
 257 }
 258
 259 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
 260         u8 reg, u8 bitmask, u8 bitvalues)
 261 {
 262         int ret;
 263         /* put the u8 bank and u8 reg together into a an u16.
 264          * bank on higher 8 bits and reg in lower */
 265         u16 addr = ((u16)bank) << 8 | reg;
 266
 267         mutex_lock(&ab8500->lock);
 268
 269         if (ab8500->write_masked == NULL) {
 270                 u8 data;
 271
 272                 ret = ab8500->read(ab8500, addr);
 273                 if (ret < 0) {
 274                         dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
 275                                 addr, ret);
 276                         goto out;
 277                 }
 278
 279                 data = (u8)ret;
 280                 data = (~bitmask & data) | (bitmask & bitvalues);
 281
 282                 ret = ab8500->write(ab8500, addr, data);
 283                 if (ret < 0)
 284                         dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
 285                                 addr, ret);
 286
 287                 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr,
 288                         data);
 289                 goto out;
 290         }
 291         ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues);
 292         if (ret < 0)
 293                 dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr,
 294                         ret);
 295 out:
 296         mutex_unlock(&ab8500->lock);
 297         return ret;
 298 }
 299
 300 static int ab8500_mask_and_set_register(struct device *dev,
 301         u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
 302 {
 303         int ret;
 304         struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 305
 306         atomic_inc(&ab8500->transfer_ongoing);
 307         ret= mask_and_set_register_interruptible(ab8500, bank, reg,
 308                                                  bitmask, bitvalues);
 309         atomic_dec(&ab8500->transfer_ongoing);
 310         return ret;
 311 }
 312
 313 static struct abx500_ops ab8500_ops = {
 314         .get_chip_id = ab8500_get_chip_id,
 315         .get_register = ab8500_get_register,
 316         .set_register = ab8500_set_register,
 317         .get_register_page = NULL,
 318         .set_register_page = NULL,
 319         .mask_and_set_register = ab8500_mask_and_set_register,
 320         .event_registers_startup_state_get = NULL,
 321         .startup_irq_enabled = NULL,
 322 };
 323
 324 static void ab8500_irq_lock(struct irq_data *data)
 325 {
 326         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 327
 328         mutex_lock(&ab8500->irq_lock);
 329         atomic_inc(&ab8500->transfer_ongoing);
 330 }
 331
 332 static void ab8500_irq_sync_unlock(struct irq_data *data)
 333 {
 334         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 335         int i;
 336
 337         for (i = 0; i < ab8500->mask_size; i++) {
 338                 u8 old = ab8500->oldmask[i];
 339                 u8 new = ab8500->mask[i];
 340                 int reg;
 341
 342                 if (new == old)
 343                         continue;
 344
 345                 /*
 346                  * Interrupt register 12 doesn't exist prior to AB8500 version
 347                  * 2.0
 348                  */
 349                 if (ab8500->irq_reg_offset[i] == 11 &&
 350                         is_ab8500_1p1_or_earlier(ab8500))
 351                         continue;
 352
 353                 ab8500->oldmask[i] = new;
 354
 355                 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
 356                 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
 357         }
 358         atomic_dec(&ab8500->transfer_ongoing);
 359         mutex_unlock(&ab8500->irq_lock);
 360 }
 361
 362 static void ab8500_irq_mask(struct irq_data *data)
 363 {
 364         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 365         int offset = data->hwirq;
 366         int index = offset / 8;
 367         int mask = 1 << (offset % 8);
 368
 369         ab8500->mask[index] |= mask;
 370 }
 371
 372 static void ab8500_irq_unmask(struct irq_data *data)
 373 {
 374         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 375         int offset = data->hwirq;
 376         int index = offset / 8;
 377         int mask = 1 << (offset % 8);
 378
 379         ab8500->mask[index] &= ~mask;
 380 }
 381
 382 static struct irq_chip ab8500_irq_chip = {
 383         .name                   = "ab8500",
 384         .irq_bus_lock           = ab8500_irq_lock,
 385         .irq_bus_sync_unlock    = ab8500_irq_sync_unlock,
 386         .irq_mask               = ab8500_irq_mask,
 387         .irq_disable            = ab8500_irq_mask,
 388         .irq_unmask             = ab8500_irq_unmask,
 389 };
 390
 391 static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500,
 392                                         int latch_offset, u8 latch_val)
 393 {
 394         int int_bit = __ffs(latch_val);
 395         int line, i;
 396
 397         do {
 398                 int_bit = __ffs(latch_val);
 399
 400                 for (i = 0; i < ab8500->mask_size; i++)
 401                         if (ab8500->irq_reg_offset[i] == latch_offset)
 402                                 break;
 403
 404                 if (i >= ab8500->mask_size) {
 405                         dev_err(ab8500->dev, "Register offset 0x%2x not declared\n",
 406                                         latch_offset);
 407                         return -ENXIO;
 408                 }
 409
 410                 line = (i << 3) + int_bit;
 411                 latch_val &= ~(1 << int_bit);
 412
 413                 handle_nested_irq(ab8500->irq_base + line);
 414         } while (latch_val);
 415
 416         return 0;
 417 }
 418
 419 static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500,
 420                                         int hier_offset, u8 hier_val)
 421 {
 422         int latch_bit, status;
 423         u8 latch_offset, latch_val;
 424
 425         do {
 426                 latch_bit = __ffs(hier_val);
 427                 latch_offset = (hier_offset << 3) + latch_bit;
 428
 429                 /* Fix inconsistent ITFromLatch25 bit mapping... */
 430                 if (unlikely(latch_offset == 17))
 431                         latch_offset = 24;
 432
 433                 status = get_register_interruptible(ab8500,
 434                                 AB8500_INTERRUPT,
 435                                 AB8500_IT_LATCH1_REG + latch_offset,
 436                                 &latch_val);
 437                 if (status < 0 || latch_val == 0)
 438                         goto discard;
 439
 440                 status = ab8500_handle_hierarchical_line(ab8500,
 441                                 latch_offset, latch_val);
 442                 if (status < 0)
 443                         return status;
 444 discard:
 445                 hier_val &= ~(1 << latch_bit);
 446         } while (hier_val);
 447
 448         return 0;
 449 }
 450
 451 static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev)
 452 {
 453         struct ab8500 *ab8500 = dev;
 454         u8 i;
 455
 456         dev_vdbg(ab8500->dev, "interrupt\n");
 457
 458         /*  Hierarchical interrupt version */
 459         for (i = 0; i < AB8500_IT_LATCHHIER_NUM; i++) {
 460                 int status;
 461                 u8 hier_val;
 462
 463                 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
 464                         AB8500_IT_LATCHHIER1_REG + i, &hier_val);
 465                 if (status < 0 || hier_val == 0)
 466                         continue;
 467
 468                 status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val);
 469                 if (status < 0)
 470                         break;
 471         }
 472         return IRQ_HANDLED;
 473 }
 474
 475 static irqreturn_t ab8500_irq(int irq, void *dev)
 476 {
 477         struct ab8500 *ab8500 = dev;
 478         int i;
 479
 480         dev_vdbg(ab8500->dev, "interrupt\n");
 481
 482         atomic_inc(&ab8500->transfer_ongoing);
 483
 484         for (i = 0; i < ab8500->mask_size; i++) {
 485                 int regoffset = ab8500->irq_reg_offset[i];
 486                 int status;
 487                 u8 value;
 488
 489                 /*
 490                  * Interrupt register 12 doesn't exist prior to AB8500 version
 491                  * 2.0
 492                  */
 493                 if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500))
 494                         continue;
 495
 496                 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
 497                         AB8500_IT_LATCH1_REG + regoffset, &value);
 498                 if (status < 0 || value == 0)
 499                         continue;
 500
 501                 do {
 502                         int bit = __ffs(value);
 503                         int line = i * 8 + bit;
 504
 505                         handle_nested_irq(ab8500->irq_base + line);
 506                         value &= ~(1 << bit);
 507
 508                 } while (value);
 509         }
 510         atomic_dec(&ab8500->transfer_ongoing);
 511         return IRQ_HANDLED;
 512 }
 513
 514 /**
 515  * ab8500_irq_get_virq(): Map an interrupt on a chip to a virtual IRQ
 516  *
 517  * @ab8500: ab8500_irq controller to operate on.
 518  * @irq: index of the interrupt requested in the chip IRQs
 519  *
 520  * Useful for drivers to request their own IRQs.
 521  */
 522 int ab8500_irq_get_virq(struct ab8500 *ab8500, int irq)
 523 {
 524         if (!ab8500)
 525                 return -EINVAL;
 526
 527         return irq_create_mapping(ab8500->domain, irq);
 528 }
 529 EXPORT_SYMBOL_GPL(ab8500_irq_get_virq);
 530
 531 static int ab8500_irq_map(struct irq_domain *d, unsigned int virq,
 532                                 irq_hw_number_t hwirq)
 533 {
 534         struct ab8500 *ab8500 = d->host_data;
 535
 536         if (!ab8500)
 537                 return -EINVAL;
 538
 539         irq_set_chip_data(virq, ab8500);
 540         irq_set_chip_and_handler(virq, &ab8500_irq_chip,
 541                                 handle_simple_irq);
 542         irq_set_nested_thread(virq, 1);
 543 #ifdef CONFIG_ARM
 544         set_irq_flags(virq, IRQF_VALID);
 545 #else
 546         irq_set_noprobe(virq);
 547 #endif
 548
 549         return 0;
 550 }
 551
 552 static struct irq_domain_ops ab8500_irq_ops = {
 553         .map    = ab8500_irq_map,
 554         .xlate  = irq_domain_xlate_twocell,
 555 };
 556
 557 static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np)
 558 {
 559         int num_irqs;
 560
 561         if (is_ab9540(ab8500))
 562                 num_irqs = AB9540_NR_IRQS;
 563         else if (is_ab8505(ab8500))
 564                 num_irqs = AB8505_NR_IRQS;
 565         else
 566                 num_irqs = AB8500_NR_IRQS;
 567
 568         if (ab8500->irq_base) {
 569                 ab8500->domain = irq_domain_add_legacy(
 570                         NULL, num_irqs, ab8500->irq_base,
 571                         0, &ab8500_irq_ops, ab8500);
 572         }
 573         else {
 574                 ab8500->domain = irq_domain_add_linear(
 575                         np, num_irqs, &ab8500_irq_ops, ab8500);
 576         }
 577
 578         if (!ab8500->domain) {
 579                 dev_err(ab8500->dev, "Failed to create irqdomain\n");
 580                 return -ENOSYS;
 581         }
 582
 583         return 0;
 584 }
 585
 586 int ab8500_suspend(struct ab8500 *ab8500)
 587 {
 588         if (atomic_read(&ab8500->transfer_ongoing))
 589                 return -EINVAL;
 590         else
 591                 return 0;
 592 }
 593
 594 /* AB8500 GPIO Resources */
 595 static struct resource __devinitdata ab8500_gpio_resources[] = {
 596         {
 597                 .name   = "GPIO_INT6",
 598                 .start  = AB8500_INT_GPIO6R,
 599                 .end    = AB8500_INT_GPIO41F,
 600                 .flags  = IORESOURCE_IRQ,
 601         }
 602 };
 603
 604 /* AB9540 GPIO Resources */
 605 static struct resource __devinitdata ab9540_gpio_resources[] = {
 606         {
 607                 .name   = "GPIO_INT6",
 608                 .start  = AB8500_INT_GPIO6R,
 609                 .end    = AB8500_INT_GPIO41F,
 610                 .flags  = IORESOURCE_IRQ,
 611         },
 612         {
 613                 .name   = "GPIO_INT14",
 614                 .start  = AB9540_INT_GPIO50R,
 615                 .end    = AB9540_INT_GPIO54R,
 616                 .flags  = IORESOURCE_IRQ,
 617         },
 618         {
 619                 .name   = "GPIO_INT15",
 620                 .start  = AB9540_INT_GPIO50F,
 621                 .end    = AB9540_INT_GPIO54F,
 622                 .flags  = IORESOURCE_IRQ,
 623         }
 624 };
 625
 626 static struct resource __devinitdata ab8500_gpadc_resources[] = {
 627         {
 628                 .name   = "HW_CONV_END",
 629                 .start  = AB8500_INT_GP_HW_ADC_CONV_END,
 630                 .end    = AB8500_INT_GP_HW_ADC_CONV_END,
 631                 .flags  = IORESOURCE_IRQ,
 632         },
 633         {
 634                 .name   = "SW_CONV_END",
 635                 .start  = AB8500_INT_GP_SW_ADC_CONV_END,
 636                 .end    = AB8500_INT_GP_SW_ADC_CONV_END,
 637                 .flags  = IORESOURCE_IRQ,
 638         },
 639 };
 640
 641 static struct resource __devinitdata ab8500_rtc_resources[] = {
 642         {
 643                 .name   = "60S",
 644                 .start  = AB8500_INT_RTC_60S,
 645                 .end    = AB8500_INT_RTC_60S,
 646                 .flags  = IORESOURCE_IRQ,
 647         },
 648         {
 649                 .name   = "ALARM",
 650                 .start  = AB8500_INT_RTC_ALARM,
 651                 .end    = AB8500_INT_RTC_ALARM,
 652                 .flags  = IORESOURCE_IRQ,
 653         },
 654 };
 655
 656 static struct resource __devinitdata ab8500_poweronkey_db_resources[] = {
 657         {
 658                 .name   = "ONKEY_DBF",
 659                 .start  = AB8500_INT_PON_KEY1DB_F,
 660                 .end    = AB8500_INT_PON_KEY1DB_F,
 661                 .flags  = IORESOURCE_IRQ,
 662         },
 663         {
 664                 .name   = "ONKEY_DBR",
 665                 .start  = AB8500_INT_PON_KEY1DB_R,
 666                 .end    = AB8500_INT_PON_KEY1DB_R,
 667                 .flags  = IORESOURCE_IRQ,
 668         },
 669 };
 670
 671 static struct resource __devinitdata ab8500_av_acc_detect_resources[] = {
 672         {
 673                .name = "ACC_DETECT_1DB_F",
 674                .start = AB8500_INT_ACC_DETECT_1DB_F,
 675                .end = AB8500_INT_ACC_DETECT_1DB_F,
 676                .flags = IORESOURCE_IRQ,
 677         },
 678         {
 679                .name = "ACC_DETECT_1DB_R",
 680                .start = AB8500_INT_ACC_DETECT_1DB_R,
 681                .end = AB8500_INT_ACC_DETECT_1DB_R,
 682                .flags = IORESOURCE_IRQ,
 683         },
 684         {
 685                .name = "ACC_DETECT_21DB_F",
 686                .start = AB8500_INT_ACC_DETECT_21DB_F,
 687                .end = AB8500_INT_ACC_DETECT_21DB_F,
 688                .flags = IORESOURCE_IRQ,
 689         },
 690         {
 691                .name = "ACC_DETECT_21DB_R",
 692                .start = AB8500_INT_ACC_DETECT_21DB_R,
 693                .end = AB8500_INT_ACC_DETECT_21DB_R,
 694                .flags = IORESOURCE_IRQ,
 695         },
 696         {
 697                .name = "ACC_DETECT_22DB_F",
 698                .start = AB8500_INT_ACC_DETECT_22DB_F,
 699                .end = AB8500_INT_ACC_DETECT_22DB_F,
 700                .flags = IORESOURCE_IRQ,
 701         },
 702         {
 703                .name = "ACC_DETECT_22DB_R",
 704                .start = AB8500_INT_ACC_DETECT_22DB_R,
 705                .end = AB8500_INT_ACC_DETECT_22DB_R,
 706                .flags = IORESOURCE_IRQ,
 707         },
 708 };
 709
 710 static struct resource __devinitdata ab8500_charger_resources[] = {
 711         {
 712                 .name = "MAIN_CH_UNPLUG_DET",
 713                 .start = AB8500_INT_MAIN_CH_UNPLUG_DET,
 714                 .end = AB8500_INT_MAIN_CH_UNPLUG_DET,
 715                 .flags = IORESOURCE_IRQ,
 716         },
 717         {
 718                 .name = "MAIN_CHARGE_PLUG_DET",
 719                 .start = AB8500_INT_MAIN_CH_PLUG_DET,
 720                 .end = AB8500_INT_MAIN_CH_PLUG_DET,
 721                 .flags = IORESOURCE_IRQ,
 722         },
 723         {
 724                 .name = "VBUS_DET_R",
 725                 .start = AB8500_INT_VBUS_DET_R,
 726                 .end = AB8500_INT_VBUS_DET_R,
 727                 .flags = IORESOURCE_IRQ,
 728         },
 729         {
 730                 .name = "VBUS_DET_F",
 731                 .start = AB8500_INT_VBUS_DET_F,
 732                 .end = AB8500_INT_VBUS_DET_F,
 733                 .flags = IORESOURCE_IRQ,
 734         },
 735         {
 736                 .name = "USB_LINK_STATUS",
 737                 .start = AB8500_INT_USB_LINK_STATUS,
 738                 .end = AB8500_INT_USB_LINK_STATUS,
 739                 .flags = IORESOURCE_IRQ,
 740         },
 741         {
 742                 .name = "VBUS_OVV",
 743                 .start = AB8500_INT_VBUS_OVV,
 744                 .end = AB8500_INT_VBUS_OVV,
 745                 .flags = IORESOURCE_IRQ,
 746         },
 747         {
 748                 .name = "USB_CH_TH_PROT_R",
 749                 .start = AB8500_INT_USB_CH_TH_PROT_R,
 750                 .end = AB8500_INT_USB_CH_TH_PROT_R,
 751                 .flags = IORESOURCE_IRQ,
 752         },
 753         {
 754                 .name = "USB_CH_TH_PROT_F",
 755                 .start = AB8500_INT_USB_CH_TH_PROT_F,
 756                 .end = AB8500_INT_USB_CH_TH_PROT_F,
 757                 .flags = IORESOURCE_IRQ,
 758         },
 759         {
 760                 .name = "MAIN_EXT_CH_NOT_OK",
 761                 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 762                 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 763                 .flags = IORESOURCE_IRQ,
 764         },
 765         {
 766                 .name = "MAIN_CH_TH_PROT_R",
 767                 .start = AB8500_INT_MAIN_CH_TH_PROT_R,
 768                 .end = AB8500_INT_MAIN_CH_TH_PROT_R,
 769                 .flags = IORESOURCE_IRQ,
 770         },
 771         {
 772                 .name = "MAIN_CH_TH_PROT_F",
 773                 .start = AB8500_INT_MAIN_CH_TH_PROT_F,
 774                 .end = AB8500_INT_MAIN_CH_TH_PROT_F,
 775                 .flags = IORESOURCE_IRQ,
 776         },
 777         {
 778                 .name = "USB_CHARGER_NOT_OKR",
 779                 .start = AB8500_INT_USB_CHARGER_NOT_OKR,
 780                 .end = AB8500_INT_USB_CHARGER_NOT_OKR,
 781                 .flags = IORESOURCE_IRQ,
 782         },
 783         {
 784                 .name = "CH_WD_EXP",
 785                 .start = AB8500_INT_CH_WD_EXP,
 786                 .end = AB8500_INT_CH_WD_EXP,
 787                 .flags = IORESOURCE_IRQ,
 788         },
 789 };
 790
 791 static struct resource __devinitdata ab8500_btemp_resources[] = {
 792         {
 793                 .name = "BAT_CTRL_INDB",
 794                 .start = AB8500_INT_BAT_CTRL_INDB,
 795                 .end = AB8500_INT_BAT_CTRL_INDB,
 796                 .flags = IORESOURCE_IRQ,
 797         },
 798         {
 799                 .name = "BTEMP_LOW",
 800                 .start = AB8500_INT_BTEMP_LOW,
 801                 .end = AB8500_INT_BTEMP_LOW,
 802                 .flags = IORESOURCE_IRQ,
 803         },
 804         {
 805                 .name = "BTEMP_HIGH",
 806                 .start = AB8500_INT_BTEMP_HIGH,
 807                 .end = AB8500_INT_BTEMP_HIGH,
 808                 .flags = IORESOURCE_IRQ,
 809         },
 810         {
 811                 .name = "BTEMP_LOW_MEDIUM",
 812                 .start = AB8500_INT_BTEMP_LOW_MEDIUM,
 813                 .end = AB8500_INT_BTEMP_LOW_MEDIUM,
 814                 .flags = IORESOURCE_IRQ,
 815         },
 816         {
 817                 .name = "BTEMP_MEDIUM_HIGH",
 818                 .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
 819                 .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
 820                 .flags = IORESOURCE_IRQ,
 821         },
 822 };
 823
 824 static struct resource __devinitdata ab8500_fg_resources[] = {
 825         {
 826                 .name = "NCONV_ACCU",
 827                 .start = AB8500_INT_CCN_CONV_ACC,
 828                 .end = AB8500_INT_CCN_CONV_ACC,
 829                 .flags = IORESOURCE_IRQ,
 830         },
 831         {
 832                 .name = "BATT_OVV",
 833                 .start = AB8500_INT_BATT_OVV,
 834                 .end = AB8500_INT_BATT_OVV,
 835                 .flags = IORESOURCE_IRQ,
 836         },
 837         {
 838                 .name = "LOW_BAT_F",
 839                 .start = AB8500_INT_LOW_BAT_F,
 840                 .end = AB8500_INT_LOW_BAT_F,
 841                 .flags = IORESOURCE_IRQ,
 842         },
 843         {
 844                 .name = "LOW_BAT_R",
 845                 .start = AB8500_INT_LOW_BAT_R,
 846                 .end = AB8500_INT_LOW_BAT_R,
 847                 .flags = IORESOURCE_IRQ,
 848         },
 849         {
 850                 .name = "CC_INT_CALIB",
 851                 .start = AB8500_INT_CC_INT_CALIB,
 852                 .end = AB8500_INT_CC_INT_CALIB,
 853                 .flags = IORESOURCE_IRQ,
 854         },
 855         {
 856                 .name = "CCEOC",
 857                 .start = AB8500_INT_CCEOC,
 858                 .end = AB8500_INT_CCEOC,
 859                 .flags = IORESOURCE_IRQ,
 860         },
 861 };
 862
 863 static struct resource __devinitdata ab8500_chargalg_resources[] = {};
 864
 865 #ifdef CONFIG_DEBUG_FS
 866 static struct resource __devinitdata ab8500_debug_resources[] = {
 867         {
 868                 .name   = "IRQ_FIRST",
 869                 .start  = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 870                 .end    = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 871                 .flags  = IORESOURCE_IRQ,
 872         },
 873         {
 874                 .name   = "IRQ_LAST",
 875                 .start  = AB8500_INT_XTAL32K_KO,
 876                 .end    = AB8500_INT_XTAL32K_KO,
 877                 .flags  = IORESOURCE_IRQ,
 878         },
 879 };
 880 #endif
 881
 882 static struct resource __devinitdata ab8500_usb_resources[] = {
 883         {
 884                 .name = "ID_WAKEUP_R",
 885                 .start = AB8500_INT_ID_WAKEUP_R,
 886                 .end = AB8500_INT_ID_WAKEUP_R,
 887                 .flags = IORESOURCE_IRQ,
 888         },
 889         {
 890                 .name = "ID_WAKEUP_F",
 891                 .start = AB8500_INT_ID_WAKEUP_F,
 892                 .end = AB8500_INT_ID_WAKEUP_F,
 893                 .flags = IORESOURCE_IRQ,
 894         },
 895         {
 896                 .name = "VBUS_DET_F",
 897                 .start = AB8500_INT_VBUS_DET_F,
 898                 .end = AB8500_INT_VBUS_DET_F,
 899                 .flags = IORESOURCE_IRQ,
 900         },
 901         {
 902                 .name = "VBUS_DET_R",
 903                 .start = AB8500_INT_VBUS_DET_R,
 904                 .end = AB8500_INT_VBUS_DET_R,
 905                 .flags = IORESOURCE_IRQ,
 906         },
 907         {
 908                 .name = "USB_LINK_STATUS",
 909                 .start = AB8500_INT_USB_LINK_STATUS,
 910                 .end = AB8500_INT_USB_LINK_STATUS,
 911                 .flags = IORESOURCE_IRQ,
 912         },
 913         {
 914                 .name = "USB_ADP_PROBE_PLUG",
 915                 .start = AB8500_INT_ADP_PROBE_PLUG,
 916                 .end = AB8500_INT_ADP_PROBE_PLUG,
 917                 .flags = IORESOURCE_IRQ,
 918         },
 919         {
 920                 .name = "USB_ADP_PROBE_UNPLUG",
 921                 .start = AB8500_INT_ADP_PROBE_UNPLUG,
 922                 .end = AB8500_INT_ADP_PROBE_UNPLUG,
 923                 .flags = IORESOURCE_IRQ,
 924         },
 925 };
 926
 927 static struct resource __devinitdata ab8505_iddet_resources[] = {
 928         {
 929                 .name  = "KeyDeglitch",
 930                 .start = AB8505_INT_KEYDEGLITCH,
 931                 .end   = AB8505_INT_KEYDEGLITCH,
 932                 .flags = IORESOURCE_IRQ,
 933         },
 934         {
 935                 .name  = "KP",
 936                 .start = AB8505_INT_KP,
 937                 .end   = AB8505_INT_KP,
 938                 .flags = IORESOURCE_IRQ,
 939         },
 940         {
 941                 .name  = "IKP",
 942                 .start = AB8505_INT_IKP,
 943                 .end   = AB8505_INT_IKP,
 944                 .flags = IORESOURCE_IRQ,
 945         },
 946         {
 947                 .name  = "IKR",
 948                 .start = AB8505_INT_IKR,
 949                 .end   = AB8505_INT_IKR,
 950                 .flags = IORESOURCE_IRQ,
 951         },
 952         {
 953                 .name  = "KeyStuck",
 954                 .start = AB8505_INT_KEYSTUCK,
 955                 .end   = AB8505_INT_KEYSTUCK,
 956                 .flags = IORESOURCE_IRQ,
 957         },
 958 };
 959
 960 static struct resource __devinitdata ab8500_temp_resources[] = {
 961         {
 962                 .name  = "AB8500_TEMP_WARM",
 963                 .start = AB8500_INT_TEMP_WARM,
 964                 .end   = AB8500_INT_TEMP_WARM,
 965                 .flags = IORESOURCE_IRQ,
 966         },
 967 };
 968
 969 static struct mfd_cell __devinitdata abx500_common_devs[] = {
 970 #ifdef CONFIG_DEBUG_FS
 971         {
 972                 .name = "ab8500-debug",
 973                 .of_compatible = "stericsson,ab8500-debug",
 974                 .num_resources = ARRAY_SIZE(ab8500_debug_resources),
 975                 .resources = ab8500_debug_resources,
 976         },
 977 #endif
 978         {
 979                 .name = "ab8500-sysctrl",
 980                 .of_compatible = "stericsson,ab8500-sysctrl",
 981         },
 982         {
 983                 .name = "ab8500-regulator",
 984                 .of_compatible = "stericsson,ab8500-regulator",
 985         },
 986         {
 987                 .name = "ab8500-gpadc",
 988                 .of_compatible = "stericsson,ab8500-gpadc",
 989                 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
 990                 .resources = ab8500_gpadc_resources,
 991         },
 992         {
 993                 .name = "ab8500-rtc",
 994                 .of_compatible = "stericsson,ab8500-rtc",
 995                 .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
 996                 .resources = ab8500_rtc_resources,
 997         },
 998         {
 999                 .name = "ab8500-acc-det",
1000                 .of_compatible = "stericsson,ab8500-acc-det",
1001                 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
1002                 .resources = ab8500_av_acc_detect_resources,
1003         },
1004         {
1005                 .name = "ab8500-poweron-key",
1006                 .of_compatible = "stericsson,ab8500-poweron-key",
1007                 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
1008                 .resources = ab8500_poweronkey_db_resources,
1009         },
1010         {
1011                 .name = "ab8500-pwm",
1012                 .of_compatible = "stericsson,ab8500-pwm",
1013                 .id = 1,
1014         },
1015         {
1016                 .name = "ab8500-pwm",
1017                 .of_compatible = "stericsson,ab8500-pwm",
1018                 .id = 2,
1019         },
1020         {
1021                 .name = "ab8500-pwm",
1022                 .of_compatible = "stericsson,ab8500-pwm",
1023                 .id = 3,
1024         },
1025         {
1026                 .name = "ab8500-leds",
1027                 .of_compatible = "stericsson,ab8500-leds",
1028         },
1029         {
1030                 .name = "ab8500-denc",
1031                 .of_compatible = "stericsson,ab8500-denc",
1032         },
1033         {
1034                 .name = "ab8500-temp",
1035                 .of_compatible = "stericsson,ab8500-temp",
1036                 .num_resources = ARRAY_SIZE(ab8500_temp_resources),
1037                 .resources = ab8500_temp_resources,
1038         },
1039 };
1040
1041 static struct mfd_cell __devinitdata ab8500_bm_devs[] = {
1042         {
1043                 .name = "ab8500-charger",
1044                 .num_resources = ARRAY_SIZE(ab8500_charger_resources),
1045                 .resources = ab8500_charger_resources,
1046         },
1047         {
1048                 .name = "ab8500-btemp",
1049                 .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
1050                 .resources = ab8500_btemp_resources,
1051         },
1052         {
1053                 .name = "ab8500-fg",
1054                 .num_resources = ARRAY_SIZE(ab8500_fg_resources),
1055                 .resources = ab8500_fg_resources,
1056         },
1057         {
1058                 .name = "ab8500-chargalg",
1059                 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
1060                 .resources = ab8500_chargalg_resources,
1061         },
1062 };
1063
1064 static struct mfd_cell __devinitdata ab8500_devs[] = {
1065         {
1066                 .name = "ab8500-gpio",
1067                 .of_compatible = "stericsson,ab8500-gpio",
1068                 .num_resources = ARRAY_SIZE(ab8500_gpio_resources),
1069                 .resources = ab8500_gpio_resources,
1070         },
1071         {
1072                 .name = "ab8500-usb",
1073                 .of_compatible = "stericsson,ab8500-usb",
1074                 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1075                 .resources = ab8500_usb_resources,
1076         },
1077         {
1078                 .name = "ab8500-codec",
1079         },
1080 };
1081
1082 static struct mfd_cell __devinitdata ab9540_devs[] = {
1083         {
1084                 .name = "ab8500-gpio",
1085                 .num_resources = ARRAY_SIZE(ab9540_gpio_resources),
1086                 .resources = ab9540_gpio_resources,
1087         },
1088         {
1089                 .name = "ab9540-usb",
1090                 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1091                 .resources = ab8500_usb_resources,
1092         },
1093         {
1094                 .name = "ab9540-codec",
1095         },
1096 };
1097
1098 /* Device list common to ab9540 and ab8505 */
1099 static struct mfd_cell __devinitdata ab9540_ab8505_devs[] = {
1100         {
1101                 .name = "ab-iddet",
1102                 .num_resources = ARRAY_SIZE(ab8505_iddet_resources),
1103                 .resources = ab8505_iddet_resources,
1104         },
1105 };
1106
1107 static ssize_t show_chip_id(struct device *dev,
1108                                 struct device_attribute *attr, char *buf)
1109 {
1110         struct ab8500 *ab8500;
1111
1112         ab8500 = dev_get_drvdata(dev);
1113         return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
1114 }
1115
1116 /*
1117  * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1118  * 0x01 Swoff bit programming
1119  * 0x02 Thermal protection activation
1120  * 0x04 Vbat lower then BattOk falling threshold
1121  * 0x08 Watchdog expired
1122  * 0x10 Non presence of 32kHz clock
1123  * 0x20 Battery level lower than power on reset threshold
1124  * 0x40 Power on key 1 pressed longer than 10 seconds
1125  * 0x80 DB8500 thermal shutdown
1126  */
1127 static ssize_t show_switch_off_status(struct device *dev,
1128                                 struct device_attribute *attr, char *buf)
1129 {
1130         int ret;
1131         u8 value;
1132         struct ab8500 *ab8500;
1133
1134         ab8500 = dev_get_drvdata(dev);
1135         ret = get_register_interruptible(ab8500, AB8500_RTC,
1136                 AB8500_SWITCH_OFF_STATUS, &value);
1137         if (ret < 0)
1138                 return ret;
1139         return sprintf(buf, "%#x\n", value);
1140 }
1141
1142 /*
1143  * ab8500 has turned on due to (TURN_ON_STATUS):
1144  * 0x01 PORnVbat
1145  * 0x02 PonKey1dbF
1146  * 0x04 PonKey2dbF
1147  * 0x08 RTCAlarm
1148  * 0x10 MainChDet
1149  * 0x20 VbusDet
1150  * 0x40 UsbIDDetect
1151  * 0x80 Reserved
1152  */
1153 static ssize_t show_turn_on_status(struct device *dev,
1154                                 struct device_attribute *attr, char *buf)
1155 {
1156         int ret;
1157         u8 value;
1158         struct ab8500 *ab8500;
1159
1160         ab8500 = dev_get_drvdata(dev);
1161         ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1162                 AB8500_TURN_ON_STATUS, &value);
1163         if (ret < 0)
1164                 return ret;
1165         return sprintf(buf, "%#x\n", value);
1166 }
1167
1168 static ssize_t show_ab9540_dbbrstn(struct device *dev,
1169                                 struct device_attribute *attr, char *buf)
1170 {
1171         struct ab8500 *ab8500;
1172         int ret;
1173         u8 value;
1174
1175         ab8500 = dev_get_drvdata(dev);
1176
1177         ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
1178                 AB9540_MODEM_CTRL2_REG, &value);
1179         if (ret < 0)
1180                 return ret;
1181
1182         return sprintf(buf, "%d\n",
1183                         (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
1184 }
1185
1186 static ssize_t store_ab9540_dbbrstn(struct device *dev,
1187         struct device_attribute *attr, const char *buf, size_t count)
1188 {
1189         struct ab8500 *ab8500;
1190         int ret = count;
1191         int err;
1192         u8 bitvalues;
1193
1194         ab8500 = dev_get_drvdata(dev);
1195
1196         if (count > 0) {
1197                 switch (buf[0]) {
1198                 case '0':
1199                         bitvalues = 0;
1200                         break;
1201                 case '1':
1202                         bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
1203                         break;
1204                 default:
1205                         goto exit;
1206                 }
1207
1208                 err = mask_and_set_register_interruptible(ab8500,
1209                         AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
1210                         AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
1211                 if (err)
1212                         dev_info(ab8500->dev,
1213                                 "Failed to set DBBRSTN %c, err %#x\n",
1214                                 buf[0], err);
1215         }
1216
1217 exit:
1218         return ret;
1219 }
1220
1221 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
1222 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
1223 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
1224 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
1225                         show_ab9540_dbbrstn, store_ab9540_dbbrstn);
1226
1227 static struct attribute *ab8500_sysfs_entries[] = {
1228         &dev_attr_chip_id.attr,
1229         &dev_attr_switch_off_status.attr,
1230         &dev_attr_turn_on_status.attr,
1231         NULL,
1232 };
1233
1234 static struct attribute *ab9540_sysfs_entries[] = {
1235         &dev_attr_chip_id.attr,
1236         &dev_attr_switch_off_status.attr,
1237         &dev_attr_turn_on_status.attr,
1238         &dev_attr_dbbrstn.attr,
1239         NULL,
1240 };
1241
1242 static struct attribute_group ab8500_attr_group = {
1243         .attrs  = ab8500_sysfs_entries,
1244 };
1245
1246 static struct attribute_group ab9540_attr_group = {
1247         .attrs  = ab9540_sysfs_entries,
1248 };
1249
1250 static int __devinit ab8500_probe(struct platform_device *pdev)
1251 {
1252         static char *switch_off_status[] = {
1253                 "Swoff bit programming",
1254                 "Thermal protection activation",
1255                 "Vbat lower then BattOk falling threshold",
1256                 "Watchdog expired",
1257                 "Non presence of 32kHz clock",
1258                 "Battery level lower than power on reset threshold",
1259                 "Power on key 1 pressed longer than 10 seconds",
1260                 "DB8500 thermal shutdown"};
1261         struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev);
1262         const struct platform_device_id *platid = platform_get_device_id(pdev);
1263         enum ab8500_version version = AB8500_VERSION_UNDEFINED;
1264         struct device_node *np = pdev->dev.of_node;
1265         struct ab8500 *ab8500;
1266         struct resource *resource;
1267         int ret;
1268         int i;
1269         u8 value;
1270
1271         ab8500 = kzalloc(sizeof *ab8500, GFP_KERNEL);
1272         if (!ab8500)
1273                 return -ENOMEM;
1274
1275         if (plat)
1276                 ab8500->irq_base = plat->irq_base;
1277
1278         ab8500->dev = &pdev->dev;
1279
1280         resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1281         if (!resource) {
1282                 ret = -ENODEV;
1283                 goto out_free_ab8500;
1284         }
1285
1286         ab8500->irq = resource->start;
1287
1288         ab8500->read = ab8500_prcmu_read;
1289         ab8500->write = ab8500_prcmu_write;
1290         ab8500->write_masked = ab8500_prcmu_write_masked;
1291
1292         mutex_init(&ab8500->lock);
1293         mutex_init(&ab8500->irq_lock);
1294         atomic_set(&ab8500->transfer_ongoing, 0);
1295
1296         platform_set_drvdata(pdev, ab8500);
1297
1298         if (platid)
1299                 version = platid->driver_data;
1300
1301         if (version != AB8500_VERSION_UNDEFINED)
1302                 ab8500->version = version;
1303         else {
1304                 ret = get_register_interruptible(ab8500, AB8500_MISC,
1305                         AB8500_IC_NAME_REG, &value);
1306                 if (ret < 0)
1307                         goto out_free_ab8500;
1308
1309                 ab8500->version = value;
1310         }
1311
1312         ret = get_register_interruptible(ab8500, AB8500_MISC,
1313                 AB8500_REV_REG, &value);
1314         if (ret < 0)
1315                 goto out_free_ab8500;
1316
1317         ab8500->chip_id = value;
1318
1319         dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1320                         ab8500_version_str[ab8500->version],
1321                         ab8500->chip_id >> 4,
1322                         ab8500->chip_id & 0x0F);
1323
1324         /* Configure AB8500 or AB9540 IRQ */
1325         if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
1326                 ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1327                 ab8500->irq_reg_offset = ab9540_irq_regoffset;
1328         } else {
1329                 ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1330                 ab8500->irq_reg_offset = ab8500_irq_regoffset;
1331         }
1332         ab8500->mask = kzalloc(ab8500->mask_size, GFP_KERNEL);
1333         if (!ab8500->mask)
1334                 return -ENOMEM;
1335         ab8500->oldmask = kzalloc(ab8500->mask_size, GFP_KERNEL);
1336         if (!ab8500->oldmask) {
1337                 ret = -ENOMEM;
1338                 goto out_freemask;
1339         }
1340         /*
1341          * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1342          * 0x01 Swoff bit programming
1343          * 0x02 Thermal protection activation
1344          * 0x04 Vbat lower then BattOk falling threshold
1345          * 0x08 Watchdog expired
1346          * 0x10 Non presence of 32kHz clock
1347          * 0x20 Battery level lower than power on reset threshold
1348          * 0x40 Power on key 1 pressed longer than 10 seconds
1349          * 0x80 DB8500 thermal shutdown
1350          */
1351
1352         ret = get_register_interruptible(ab8500, AB8500_RTC,
1353                 AB8500_SWITCH_OFF_STATUS, &value);
1354         if (ret < 0)
1355                 return ret;
1356         dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value);
1357
1358         if (value) {
1359                 for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) {
1360                         if (value & 1)
1361                                 printk(KERN_CONT " \"%s\"",
1362                                        switch_off_status[i]);
1363                         value = value >> 1;
1364
1365                 }
1366                 printk(KERN_CONT "\n");
1367         } else {
1368                 printk(KERN_CONT " None\n");
1369         }
1370
1371         if (plat && plat->init)
1372                 plat->init(ab8500);
1373
1374         /* Clear and mask all interrupts */
1375         for (i = 0; i < ab8500->mask_size; i++) {
1376                 /*
1377                  * Interrupt register 12 doesn't exist prior to AB8500 version
1378                  * 2.0
1379                  */
1380                 if (ab8500->irq_reg_offset[i] == 11 &&
1381                                 is_ab8500_1p1_or_earlier(ab8500))
1382                         continue;
1383
1384                 get_register_interruptible(ab8500, AB8500_INTERRUPT,
1385                         AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1386                         &value);
1387                 set_register_interruptible(ab8500, AB8500_INTERRUPT,
1388                         AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1389         }
1390
1391         ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1392         if (ret)
1393                 goto out_freeoldmask;
1394
1395         for (i = 0; i < ab8500->mask_size; i++)
1396                 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1397
1398         ret = ab8500_irq_init(ab8500, np);
1399         if (ret)
1400                 goto out_freeoldmask;
1401
1402         /*  Activate this feature only in ab9540 */
1403         /*  till tests are done on ab8500 1p2 or later*/
1404         if (is_ab9540(ab8500)) {
1405                 ret = request_threaded_irq(ab8500->irq, NULL,
1406                                         ab8500_hierarchical_irq,
1407                                         IRQF_ONESHOT | IRQF_NO_SUSPEND,
1408                                         "ab8500", ab8500);
1409         }
1410         else {
1411                 ret = request_threaded_irq(ab8500->irq, NULL,
1412                                         ab8500_irq,
1413                                         IRQF_ONESHOT | IRQF_NO_SUSPEND,
1414                                         "ab8500", ab8500);
1415                 if (ret)
1416                         goto out_freeoldmask;
1417         }
1418
1419         ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs,
1420                         ARRAY_SIZE(abx500_common_devs), NULL,
1421                         ab8500->irq_base, ab8500->domain);
1422         if (ret)
1423                 goto out_freeirq;
1424
1425         if (is_ab9540(ab8500))
1426                 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1427                                 ARRAY_SIZE(ab9540_devs), NULL,
1428                                 ab8500->irq_base, ab8500->domain);
1429         else
1430                 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1431                                 ARRAY_SIZE(ab8500_devs), NULL,
1432                                 ab8500->irq_base, ab8500->domain);
1433         if (ret)
1434                 goto out_freeirq;
1435
1436         if (is_ab9540(ab8500) || is_ab8505(ab8500))
1437                 ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs,
1438                                 ARRAY_SIZE(ab9540_ab8505_devs), NULL,
1439                                 ab8500->irq_base, ab8500->domain);
1440         if (ret)
1441                 goto out_freeirq;
1442
1443         if (!no_bm) {
1444                 /* Add battery management devices */
1445                 ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
1446                                       ARRAY_SIZE(ab8500_bm_devs), NULL,
1447                                       ab8500->irq_base, ab8500->domain);
1448                 if (ret)
1449                         dev_err(ab8500->dev, "error adding bm devices\n");
1450         }
1451
1452         if (is_ab9540(ab8500))
1453                 ret = sysfs_create_group(&ab8500->dev->kobj,
1454                                         &ab9540_attr_group);
1455         else
1456                 ret = sysfs_create_group(&ab8500->dev->kobj,
1457                                         &ab8500_attr_group);
1458         if (ret)
1459                 dev_err(ab8500->dev, "error creating sysfs entries\n");
1460
1461         return ret;
1462
1463 out_freeirq:
1464         free_irq(ab8500->irq, ab8500);
1465 out_freeoldmask:
1466         kfree(ab8500->oldmask);
1467 out_freemask:
1468         kfree(ab8500->mask);
1469 out_free_ab8500:
1470         kfree(ab8500);
1471
1472         return ret;
1473 }
1474
1475 static int __devexit ab8500_remove(struct platform_device *pdev)
1476 {
1477         struct ab8500 *ab8500 = platform_get_drvdata(pdev);
1478
1479         if (is_ab9540(ab8500))
1480                 sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group);
1481         else
1482                 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
1483
1484         mfd_remove_devices(ab8500->dev);
1485         free_irq(ab8500->irq, ab8500);
1486
1487         kfree(ab8500->oldmask);
1488         kfree(ab8500->mask);
1489         kfree(ab8500);
1490
1491         return 0;
1492 }
1493
1494 static const struct platform_device_id ab8500_id[] = {
1495         { "ab8500-core", AB8500_VERSION_AB8500 },
1496         { "ab8505-i2c", AB8500_VERSION_AB8505 },
1497         { "ab9540-i2c", AB8500_VERSION_AB9540 },
1498         { "ab8540-i2c", AB8500_VERSION_AB8540 },
1499         { }
1500 };
1501
1502 static struct platform_driver ab8500_core_driver = {
1503         .driver = {
1504                 .name = "ab8500-core",
1505                 .owner = THIS_MODULE,
1506         },
1507         .probe  = ab8500_probe,
1508         .remove = __devexit_p(ab8500_remove),
1509         .id_table = ab8500_id,
1510 };
1511
1512 static int __init ab8500_core_init(void)
1513 {
1514         return platform_driver_register(&ab8500_core_driver);
1515 }
1516
1517 static void __exit ab8500_core_exit(void)
1518 {
1519         platform_driver_unregister(&ab8500_core_driver);
1520 }
1521 core_initcall(ab8500_core_init);
1522 module_exit(ab8500_core_exit);
1523
1524 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
1525 MODULE_DESCRIPTION("AB8500 MFD core");
1526 MODULE_LICENSE("GPL v2");