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/delay.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/module.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/mfd/core.h>
  19 #include <linux/mfd/abx500.h>
  20 #include <linux/mfd/abx500/ab8500.h>
  21 #include <linux/regulator/ab8500.h>
  22
  23 /*
  24  * Interrupt register offsets
  25  * Bank : 0x0E
  26  */
  27 #define AB8500_IT_SOURCE1_REG           0x00
  28 #define AB8500_IT_SOURCE2_REG           0x01
  29 #define AB8500_IT_SOURCE3_REG           0x02
  30 #define AB8500_IT_SOURCE4_REG           0x03
  31 #define AB8500_IT_SOURCE5_REG           0x04
  32 #define AB8500_IT_SOURCE6_REG           0x05
  33 #define AB8500_IT_SOURCE7_REG           0x06
  34 #define AB8500_IT_SOURCE8_REG           0x07
  35 #define AB9540_IT_SOURCE13_REG          0x0C
  36 #define AB8500_IT_SOURCE19_REG          0x12
  37 #define AB8500_IT_SOURCE20_REG          0x13
  38 #define AB8500_IT_SOURCE21_REG          0x14
  39 #define AB8500_IT_SOURCE22_REG          0x15
  40 #define AB8500_IT_SOURCE23_REG          0x16
  41 #define AB8500_IT_SOURCE24_REG          0x17
  42
  43 /*
  44  * latch registers
  45  */
  46 #define AB8500_IT_LATCH1_REG            0x20
  47 #define AB8500_IT_LATCH2_REG            0x21
  48 #define AB8500_IT_LATCH3_REG            0x22
  49 #define AB8500_IT_LATCH4_REG            0x23
  50 #define AB8500_IT_LATCH5_REG            0x24
  51 #define AB8500_IT_LATCH6_REG            0x25
  52 #define AB8500_IT_LATCH7_REG            0x26
  53 #define AB8500_IT_LATCH8_REG            0x27
  54 #define AB8500_IT_LATCH9_REG            0x28
  55 #define AB8500_IT_LATCH10_REG           0x29
  56 #define AB8500_IT_LATCH12_REG           0x2B
  57 #define AB9540_IT_LATCH13_REG           0x2C
  58 #define AB8500_IT_LATCH19_REG           0x32
  59 #define AB8500_IT_LATCH20_REG           0x33
  60 #define AB8500_IT_LATCH21_REG           0x34
  61 #define AB8500_IT_LATCH22_REG           0x35
  62 #define AB8500_IT_LATCH23_REG           0x36
  63 #define AB8500_IT_LATCH24_REG           0x37
  64
  65 /*
  66  * mask registers
  67  */
  68
  69 #define AB8500_IT_MASK1_REG             0x40
  70 #define AB8500_IT_MASK2_REG             0x41
  71 #define AB8500_IT_MASK3_REG             0x42
  72 #define AB8500_IT_MASK4_REG             0x43
  73 #define AB8500_IT_MASK5_REG             0x44
  74 #define AB8500_IT_MASK6_REG             0x45
  75 #define AB8500_IT_MASK7_REG             0x46
  76 #define AB8500_IT_MASK8_REG             0x47
  77 #define AB8500_IT_MASK9_REG             0x48
  78 #define AB8500_IT_MASK10_REG            0x49
  79 #define AB8500_IT_MASK11_REG            0x4A
  80 #define AB8500_IT_MASK12_REG            0x4B
  81 #define AB8500_IT_MASK13_REG            0x4C
  82 #define AB8500_IT_MASK14_REG            0x4D
  83 #define AB8500_IT_MASK15_REG            0x4E
  84 #define AB8500_IT_MASK16_REG            0x4F
  85 #define AB8500_IT_MASK17_REG            0x50
  86 #define AB8500_IT_MASK18_REG            0x51
  87 #define AB8500_IT_MASK19_REG            0x52
  88 #define AB8500_IT_MASK20_REG            0x53
  89 #define AB8500_IT_MASK21_REG            0x54
  90 #define AB8500_IT_MASK22_REG            0x55
  91 #define AB8500_IT_MASK23_REG            0x56
  92 #define AB8500_IT_MASK24_REG            0x57
  93
  94 #define AB8500_REV_REG                  0x80
  95 #define AB8500_IC_NAME_REG              0x82
  96 #define AB8500_SWITCH_OFF_STATUS        0x00
  97
  98 #define AB8500_TURN_ON_STATUS           0x00
  99
 100 #define AB9540_MODEM_CTRL2_REG                  0x23
 101 #define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT        BIT(2)
 102
 103 /*
 104  * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
 105  * numbers are indexed into this array with (num / 8). The interupts are
 106  * defined in linux/mfd/ab8500.h
 107  *
 108  * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
 109  * offset 0.
 110  */
 111 /* AB8500 support */
 112 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
 113         0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
 114 };
 115
 116 /* AB9540 support */
 117 static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
 118         0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24,
 119 };
 120
 121 static const char ab8500_version_str[][7] = {
 122         [AB8500_VERSION_AB8500] = "AB8500",
 123         [AB8500_VERSION_AB8505] = "AB8505",
 124         [AB8500_VERSION_AB9540] = "AB9540",
 125         [AB8500_VERSION_AB8540] = "AB8540",
 126 };
 127
 128 static int ab8500_get_chip_id(struct device *dev)
 129 {
 130         struct ab8500 *ab8500;
 131
 132         if (!dev)
 133                 return -EINVAL;
 134         ab8500 = dev_get_drvdata(dev->parent);
 135         return ab8500 ? (int)ab8500->chip_id : -EINVAL;
 136 }
 137
 138 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
 139         u8 reg, u8 data)
 140 {
 141         int ret;
 142         /*
 143          * Put the u8 bank and u8 register together into a an u16.
 144          * The bank on higher 8 bits and register in lower 8 bits.
 145          * */
 146         u16 addr = ((u16)bank) << 8 | reg;
 147
 148         dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
 149
 150         mutex_lock(&ab8500->lock);
 151
 152         ret = ab8500->write(ab8500, addr, data);
 153         if (ret < 0)
 154                 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
 155                         addr, ret);
 156         mutex_unlock(&ab8500->lock);
 157
 158         return ret;
 159 }
 160
 161 static int ab8500_set_register(struct device *dev, u8 bank,
 162         u8 reg, u8 value)
 163 {
 164         struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 165
 166         return set_register_interruptible(ab8500, bank, reg, value);
 167 }
 168
 169 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
 170         u8 reg, u8 *value)
 171 {
 172         int ret;
 173         /* put the u8 bank and u8 reg together into a an u16.
 174          * bank on higher 8 bits and reg in lower */
 175         u16 addr = ((u16)bank) << 8 | reg;
 176
 177         mutex_lock(&ab8500->lock);
 178
 179         ret = ab8500->read(ab8500, addr);
 180         if (ret < 0)
 181                 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
 182                         addr, ret);
 183         else
 184                 *value = ret;
 185
 186         mutex_unlock(&ab8500->lock);
 187         dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
 188
 189         return ret;
 190 }
 191
 192 static int ab8500_get_register(struct device *dev, u8 bank,
 193         u8 reg, u8 *value)
 194 {
 195         struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 196
 197         return get_register_interruptible(ab8500, bank, reg, value);
 198 }
 199
 200 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
 201         u8 reg, u8 bitmask, u8 bitvalues)
 202 {
 203         int ret;
 204         /* put the u8 bank and u8 reg together into a an u16.
 205          * bank on higher 8 bits and reg in lower */
 206         u16 addr = ((u16)bank) << 8 | reg;
 207
 208         mutex_lock(&ab8500->lock);
 209
 210         if (ab8500->write_masked == NULL) {
 211                 u8 data;
 212
 213                 ret = ab8500->read(ab8500, addr);
 214                 if (ret < 0) {
 215                         dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
 216                                 addr, ret);
 217                         goto out;
 218                 }
 219
 220                 data = (u8)ret;
 221                 data = (~bitmask & data) | (bitmask & bitvalues);
 222
 223                 ret = ab8500->write(ab8500, addr, data);
 224                 if (ret < 0)
 225                         dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
 226                                 addr, ret);
 227
 228                 dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr,
 229                         data);
 230                 goto out;
 231         }
 232         ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues);
 233         if (ret < 0)
 234                 dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr,
 235                         ret);
 236 out:
 237         mutex_unlock(&ab8500->lock);
 238         return ret;
 239 }
 240
 241 static int ab8500_mask_and_set_register(struct device *dev,
 242         u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
 243 {
 244         struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 245
 246         return mask_and_set_register_interruptible(ab8500, bank, reg,
 247                 bitmask, bitvalues);
 248
 249 }
 250
 251 static struct abx500_ops ab8500_ops = {
 252         .get_chip_id = ab8500_get_chip_id,
 253         .get_register = ab8500_get_register,
 254         .set_register = ab8500_set_register,
 255         .get_register_page = NULL,
 256         .set_register_page = NULL,
 257         .mask_and_set_register = ab8500_mask_and_set_register,
 258         .event_registers_startup_state_get = NULL,
 259         .startup_irq_enabled = NULL,
 260 };
 261
 262 static void ab8500_irq_lock(struct irq_data *data)
 263 {
 264         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 265
 266         mutex_lock(&ab8500->irq_lock);
 267 }
 268
 269 static void ab8500_irq_sync_unlock(struct irq_data *data)
 270 {
 271         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 272         int i;
 273
 274         for (i = 0; i < ab8500->mask_size; i++) {
 275                 u8 old = ab8500->oldmask[i];
 276                 u8 new = ab8500->mask[i];
 277                 int reg;
 278
 279                 if (new == old)
 280                         continue;
 281
 282                 /*
 283                  * Interrupt register 12 doesn't exist prior to AB8500 version
 284                  * 2.0
 285                  */
 286                 if (ab8500->irq_reg_offset[i] == 11 &&
 287                         is_ab8500_1p1_or_earlier(ab8500))
 288                         continue;
 289
 290                 ab8500->oldmask[i] = new;
 291
 292                 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
 293                 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
 294         }
 295
 296         mutex_unlock(&ab8500->irq_lock);
 297 }
 298
 299 static void ab8500_irq_mask(struct irq_data *data)
 300 {
 301         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 302         int offset = data->irq - ab8500->irq_base;
 303         int index = offset / 8;
 304         int mask = 1 << (offset % 8);
 305
 306         ab8500->mask[index] |= mask;
 307 }
 308
 309 static void ab8500_irq_unmask(struct irq_data *data)
 310 {
 311         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 312         int offset = data->irq - ab8500->irq_base;
 313         int index = offset / 8;
 314         int mask = 1 << (offset % 8);
 315
 316         ab8500->mask[index] &= ~mask;
 317 }
 318
 319 static struct irq_chip ab8500_irq_chip = {
 320         .name                   = "ab8500",
 321         .irq_bus_lock           = ab8500_irq_lock,
 322         .irq_bus_sync_unlock    = ab8500_irq_sync_unlock,
 323         .irq_mask               = ab8500_irq_mask,
 324         .irq_disable            = ab8500_irq_mask,
 325         .irq_unmask             = ab8500_irq_unmask,
 326 };
 327
 328 static irqreturn_t ab8500_irq(int irq, void *dev)
 329 {
 330         struct ab8500 *ab8500 = dev;
 331         int i;
 332
 333         dev_vdbg(ab8500->dev, "interrupt\n");
 334
 335         for (i = 0; i < ab8500->mask_size; i++) {
 336                 int regoffset = ab8500->irq_reg_offset[i];
 337                 int status;
 338                 u8 value;
 339
 340                 /*
 341                  * Interrupt register 12 doesn't exist prior to AB8500 version
 342                  * 2.0
 343                  */
 344                 if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500))
 345                         continue;
 346
 347                 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
 348                         AB8500_IT_LATCH1_REG + regoffset, &value);
 349                 if (status < 0 || value == 0)
 350                         continue;
 351
 352                 do {
 353                         int bit = __ffs(value);
 354                         int line = i * 8 + bit;
 355
 356                         handle_nested_irq(ab8500->irq_base + line);
 357                         value &= ~(1 << bit);
 358                 } while (value);
 359         }
 360
 361         return IRQ_HANDLED;
 362 }
 363
 364 static int ab8500_irq_init(struct ab8500 *ab8500)
 365 {
 366         int base = ab8500->irq_base;
 367         int irq;
 368         int num_irqs;
 369
 370         if (is_ab9540(ab8500))
 371                 num_irqs = AB9540_NR_IRQS;
 372         else if (is_ab8505(ab8500))
 373                 num_irqs = AB8505_NR_IRQS;
 374         else
 375                 num_irqs = AB8500_NR_IRQS;
 376
 377         for (irq = base; irq < base + num_irqs; irq++) {
 378                 irq_set_chip_data(irq, ab8500);
 379                 irq_set_chip_and_handler(irq, &ab8500_irq_chip,
 380                                          handle_simple_irq);
 381                 irq_set_nested_thread(irq, 1);
 382 #ifdef CONFIG_ARM
 383                 set_irq_flags(irq, IRQF_VALID);
 384 #else
 385                 irq_set_noprobe(irq);
 386 #endif
 387         }
 388
 389         return 0;
 390 }
 391
 392 static void ab8500_irq_remove(struct ab8500 *ab8500)
 393 {
 394         int base = ab8500->irq_base;
 395         int irq;
 396         int num_irqs;
 397
 398         if (is_ab9540(ab8500))
 399                 num_irqs = AB9540_NR_IRQS;
 400         else if (is_ab8505(ab8500))
 401                 num_irqs = AB8505_NR_IRQS;
 402         else
 403                 num_irqs = AB8500_NR_IRQS;
 404
 405         for (irq = base; irq < base + num_irqs; irq++) {
 406 #ifdef CONFIG_ARM
 407                 set_irq_flags(irq, 0);
 408 #endif
 409                 irq_set_chip_and_handler(irq, NULL, NULL);
 410                 irq_set_chip_data(irq, NULL);
 411         }
 412 }
 413
 414 /* AB8500 GPIO Resources */
 415 static struct resource __devinitdata ab8500_gpio_resources[] = {
 416         {
 417                 .name   = "GPIO_INT6",
 418                 .start  = AB8500_INT_GPIO6R,
 419                 .end    = AB8500_INT_GPIO41F,
 420                 .flags  = IORESOURCE_IRQ,
 421         }
 422 };
 423
 424 /* AB9540 GPIO Resources */
 425 static struct resource __devinitdata ab9540_gpio_resources[] = {
 426         {
 427                 .name   = "GPIO_INT6",
 428                 .start  = AB8500_INT_GPIO6R,
 429                 .end    = AB8500_INT_GPIO41F,
 430                 .flags  = IORESOURCE_IRQ,
 431         },
 432         {
 433                 .name   = "GPIO_INT14",
 434                 .start  = AB9540_INT_GPIO50R,
 435                 .end    = AB9540_INT_GPIO54R,
 436                 .flags  = IORESOURCE_IRQ,
 437         },
 438         {
 439                 .name   = "GPIO_INT15",
 440                 .start  = AB9540_INT_GPIO50F,
 441                 .end    = AB9540_INT_GPIO54F,
 442                 .flags  = IORESOURCE_IRQ,
 443         }
 444 };
 445
 446 static struct resource __devinitdata ab8500_gpadc_resources[] = {
 447         {
 448                 .name   = "HW_CONV_END",
 449                 .start  = AB8500_INT_GP_HW_ADC_CONV_END,
 450                 .end    = AB8500_INT_GP_HW_ADC_CONV_END,
 451                 .flags  = IORESOURCE_IRQ,
 452         },
 453         {
 454                 .name   = "SW_CONV_END",
 455                 .start  = AB8500_INT_GP_SW_ADC_CONV_END,
 456                 .end    = AB8500_INT_GP_SW_ADC_CONV_END,
 457                 .flags  = IORESOURCE_IRQ,
 458         },
 459 };
 460
 461 static struct resource __devinitdata ab8500_rtc_resources[] = {
 462         {
 463                 .name   = "60S",
 464                 .start  = AB8500_INT_RTC_60S,
 465                 .end    = AB8500_INT_RTC_60S,
 466                 .flags  = IORESOURCE_IRQ,
 467         },
 468         {
 469                 .name   = "ALARM",
 470                 .start  = AB8500_INT_RTC_ALARM,
 471                 .end    = AB8500_INT_RTC_ALARM,
 472                 .flags  = IORESOURCE_IRQ,
 473         },
 474 };
 475
 476 static struct resource __devinitdata ab8500_poweronkey_db_resources[] = {
 477         {
 478                 .name   = "ONKEY_DBF",
 479                 .start  = AB8500_INT_PON_KEY1DB_F,
 480                 .end    = AB8500_INT_PON_KEY1DB_F,
 481                 .flags  = IORESOURCE_IRQ,
 482         },
 483         {
 484                 .name   = "ONKEY_DBR",
 485                 .start  = AB8500_INT_PON_KEY1DB_R,
 486                 .end    = AB8500_INT_PON_KEY1DB_R,
 487                 .flags  = IORESOURCE_IRQ,
 488         },
 489 };
 490
 491 static struct resource __devinitdata ab8500_av_acc_detect_resources[] = {
 492         {
 493                .name = "ACC_DETECT_1DB_F",
 494                .start = AB8500_INT_ACC_DETECT_1DB_F,
 495                .end = AB8500_INT_ACC_DETECT_1DB_F,
 496                .flags = IORESOURCE_IRQ,
 497         },
 498         {
 499                .name = "ACC_DETECT_1DB_R",
 500                .start = AB8500_INT_ACC_DETECT_1DB_R,
 501                .end = AB8500_INT_ACC_DETECT_1DB_R,
 502                .flags = IORESOURCE_IRQ,
 503         },
 504         {
 505                .name = "ACC_DETECT_21DB_F",
 506                .start = AB8500_INT_ACC_DETECT_21DB_F,
 507                .end = AB8500_INT_ACC_DETECT_21DB_F,
 508                .flags = IORESOURCE_IRQ,
 509         },
 510         {
 511                .name = "ACC_DETECT_21DB_R",
 512                .start = AB8500_INT_ACC_DETECT_21DB_R,
 513                .end = AB8500_INT_ACC_DETECT_21DB_R,
 514                .flags = IORESOURCE_IRQ,
 515         },
 516         {
 517                .name = "ACC_DETECT_22DB_F",
 518                .start = AB8500_INT_ACC_DETECT_22DB_F,
 519                .end = AB8500_INT_ACC_DETECT_22DB_F,
 520                .flags = IORESOURCE_IRQ,
 521         },
 522         {
 523                .name = "ACC_DETECT_22DB_R",
 524                .start = AB8500_INT_ACC_DETECT_22DB_R,
 525                .end = AB8500_INT_ACC_DETECT_22DB_R,
 526                .flags = IORESOURCE_IRQ,
 527         },
 528 };
 529
 530 static struct resource __devinitdata ab8500_charger_resources[] = {
 531         {
 532                 .name = "MAIN_CH_UNPLUG_DET",
 533                 .start = AB8500_INT_MAIN_CH_UNPLUG_DET,
 534                 .end = AB8500_INT_MAIN_CH_UNPLUG_DET,
 535                 .flags = IORESOURCE_IRQ,
 536         },
 537         {
 538                 .name = "MAIN_CHARGE_PLUG_DET",
 539                 .start = AB8500_INT_MAIN_CH_PLUG_DET,
 540                 .end = AB8500_INT_MAIN_CH_PLUG_DET,
 541                 .flags = IORESOURCE_IRQ,
 542         },
 543         {
 544                 .name = "VBUS_DET_R",
 545                 .start = AB8500_INT_VBUS_DET_R,
 546                 .end = AB8500_INT_VBUS_DET_R,
 547                 .flags = IORESOURCE_IRQ,
 548         },
 549         {
 550                 .name = "VBUS_DET_F",
 551                 .start = AB8500_INT_VBUS_DET_F,
 552                 .end = AB8500_INT_VBUS_DET_F,
 553                 .flags = IORESOURCE_IRQ,
 554         },
 555         {
 556                 .name = "USB_LINK_STATUS",
 557                 .start = AB8500_INT_USB_LINK_STATUS,
 558                 .end = AB8500_INT_USB_LINK_STATUS,
 559                 .flags = IORESOURCE_IRQ,
 560         },
 561         {
 562                 .name = "VBUS_OVV",
 563                 .start = AB8500_INT_VBUS_OVV,
 564                 .end = AB8500_INT_VBUS_OVV,
 565                 .flags = IORESOURCE_IRQ,
 566         },
 567         {
 568                 .name = "USB_CH_TH_PROT_R",
 569                 .start = AB8500_INT_USB_CH_TH_PROT_R,
 570                 .end = AB8500_INT_USB_CH_TH_PROT_R,
 571                 .flags = IORESOURCE_IRQ,
 572         },
 573         {
 574                 .name = "USB_CH_TH_PROT_F",
 575                 .start = AB8500_INT_USB_CH_TH_PROT_F,
 576                 .end = AB8500_INT_USB_CH_TH_PROT_F,
 577                 .flags = IORESOURCE_IRQ,
 578         },
 579         {
 580                 .name = "MAIN_EXT_CH_NOT_OK",
 581                 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 582                 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 583                 .flags = IORESOURCE_IRQ,
 584         },
 585         {
 586                 .name = "MAIN_CH_TH_PROT_R",
 587                 .start = AB8500_INT_MAIN_CH_TH_PROT_R,
 588                 .end = AB8500_INT_MAIN_CH_TH_PROT_R,
 589                 .flags = IORESOURCE_IRQ,
 590         },
 591         {
 592                 .name = "MAIN_CH_TH_PROT_F",
 593                 .start = AB8500_INT_MAIN_CH_TH_PROT_F,
 594                 .end = AB8500_INT_MAIN_CH_TH_PROT_F,
 595                 .flags = IORESOURCE_IRQ,
 596         },
 597         {
 598                 .name = "USB_CHARGER_NOT_OKR",
 599                 .start = AB8500_INT_USB_CHARGER_NOT_OKR,
 600                 .end = AB8500_INT_USB_CHARGER_NOT_OKR,
 601                 .flags = IORESOURCE_IRQ,
 602         },
 603         {
 604                 .name = "CH_WD_EXP",
 605                 .start = AB8500_INT_CH_WD_EXP,
 606                 .end = AB8500_INT_CH_WD_EXP,
 607                 .flags = IORESOURCE_IRQ,
 608         },
 609 };
 610
 611 static struct resource __devinitdata ab8500_btemp_resources[] = {
 612         {
 613                 .name = "BAT_CTRL_INDB",
 614                 .start = AB8500_INT_BAT_CTRL_INDB,
 615                 .end = AB8500_INT_BAT_CTRL_INDB,
 616                 .flags = IORESOURCE_IRQ,
 617         },
 618         {
 619                 .name = "BTEMP_LOW",
 620                 .start = AB8500_INT_BTEMP_LOW,
 621                 .end = AB8500_INT_BTEMP_LOW,
 622                 .flags = IORESOURCE_IRQ,
 623         },
 624         {
 625                 .name = "BTEMP_HIGH",
 626                 .start = AB8500_INT_BTEMP_HIGH,
 627                 .end = AB8500_INT_BTEMP_HIGH,
 628                 .flags = IORESOURCE_IRQ,
 629         },
 630         {
 631                 .name = "BTEMP_LOW_MEDIUM",
 632                 .start = AB8500_INT_BTEMP_LOW_MEDIUM,
 633                 .end = AB8500_INT_BTEMP_LOW_MEDIUM,
 634                 .flags = IORESOURCE_IRQ,
 635         },
 636         {
 637                 .name = "BTEMP_MEDIUM_HIGH",
 638                 .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
 639                 .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
 640                 .flags = IORESOURCE_IRQ,
 641         },
 642 };
 643
 644 static struct resource __devinitdata ab8500_fg_resources[] = {
 645         {
 646                 .name = "NCONV_ACCU",
 647                 .start = AB8500_INT_CCN_CONV_ACC,
 648                 .end = AB8500_INT_CCN_CONV_ACC,
 649                 .flags = IORESOURCE_IRQ,
 650         },
 651         {
 652                 .name = "BATT_OVV",
 653                 .start = AB8500_INT_BATT_OVV,
 654                 .end = AB8500_INT_BATT_OVV,
 655                 .flags = IORESOURCE_IRQ,
 656         },
 657         {
 658                 .name = "LOW_BAT_F",
 659                 .start = AB8500_INT_LOW_BAT_F,
 660                 .end = AB8500_INT_LOW_BAT_F,
 661                 .flags = IORESOURCE_IRQ,
 662         },
 663         {
 664                 .name = "LOW_BAT_R",
 665                 .start = AB8500_INT_LOW_BAT_R,
 666                 .end = AB8500_INT_LOW_BAT_R,
 667                 .flags = IORESOURCE_IRQ,
 668         },
 669         {
 670                 .name = "CC_INT_CALIB",
 671                 .start = AB8500_INT_CC_INT_CALIB,
 672                 .end = AB8500_INT_CC_INT_CALIB,
 673                 .flags = IORESOURCE_IRQ,
 674         },
 675         {
 676                 .name = "CCEOC",
 677                 .start = AB8500_INT_CCEOC,
 678                 .end = AB8500_INT_CCEOC,
 679                 .flags = IORESOURCE_IRQ,
 680         },
 681 };
 682
 683 static struct resource __devinitdata ab8500_chargalg_resources[] = {};
 684
 685 #ifdef CONFIG_DEBUG_FS
 686 static struct resource __devinitdata ab8500_debug_resources[] = {
 687         {
 688                 .name   = "IRQ_FIRST",
 689                 .start  = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 690                 .end    = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 691                 .flags  = IORESOURCE_IRQ,
 692         },
 693         {
 694                 .name   = "IRQ_LAST",
 695                 .start  = AB8500_INT_XTAL32K_KO,
 696                 .end    = AB8500_INT_XTAL32K_KO,
 697                 .flags  = IORESOURCE_IRQ,
 698         },
 699 };
 700 #endif
 701
 702 static struct resource __devinitdata ab8500_usb_resources[] = {
 703         {
 704                 .name = "ID_WAKEUP_R",
 705                 .start = AB8500_INT_ID_WAKEUP_R,
 706                 .end = AB8500_INT_ID_WAKEUP_R,
 707                 .flags = IORESOURCE_IRQ,
 708         },
 709         {
 710                 .name = "ID_WAKEUP_F",
 711                 .start = AB8500_INT_ID_WAKEUP_F,
 712                 .end = AB8500_INT_ID_WAKEUP_F,
 713                 .flags = IORESOURCE_IRQ,
 714         },
 715         {
 716                 .name = "VBUS_DET_F",
 717                 .start = AB8500_INT_VBUS_DET_F,
 718                 .end = AB8500_INT_VBUS_DET_F,
 719                 .flags = IORESOURCE_IRQ,
 720         },
 721         {
 722                 .name = "VBUS_DET_R",
 723                 .start = AB8500_INT_VBUS_DET_R,
 724                 .end = AB8500_INT_VBUS_DET_R,
 725                 .flags = IORESOURCE_IRQ,
 726         },
 727         {
 728                 .name = "USB_LINK_STATUS",
 729                 .start = AB8500_INT_USB_LINK_STATUS,
 730                 .end = AB8500_INT_USB_LINK_STATUS,
 731                 .flags = IORESOURCE_IRQ,
 732         },
 733         {
 734                 .name = "USB_ADP_PROBE_PLUG",
 735                 .start = AB8500_INT_ADP_PROBE_PLUG,
 736                 .end = AB8500_INT_ADP_PROBE_PLUG,
 737                 .flags = IORESOURCE_IRQ,
 738         },
 739         {
 740                 .name = "USB_ADP_PROBE_UNPLUG",
 741                 .start = AB8500_INT_ADP_PROBE_UNPLUG,
 742                 .end = AB8500_INT_ADP_PROBE_UNPLUG,
 743                 .flags = IORESOURCE_IRQ,
 744         },
 745 };
 746
 747 static struct resource __devinitdata ab8500_temp_resources[] = {
 748         {
 749                 .name  = "AB8500_TEMP_WARM",
 750                 .start = AB8500_INT_TEMP_WARM,
 751                 .end   = AB8500_INT_TEMP_WARM,
 752                 .flags = IORESOURCE_IRQ,
 753         },
 754 };
 755
 756 static struct mfd_cell __devinitdata abx500_common_devs[] = {
 757 #ifdef CONFIG_DEBUG_FS
 758         {
 759                 .name = "ab8500-debug",
 760                 .num_resources = ARRAY_SIZE(ab8500_debug_resources),
 761                 .resources = ab8500_debug_resources,
 762         },
 763 #endif
 764         {
 765                 .name = "ab8500-sysctrl",
 766         },
 767         {
 768                 .name = "ab8500-regulator",
 769         },
 770         {
 771                 .name = "ab8500-gpadc",
 772                 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
 773                 .resources = ab8500_gpadc_resources,
 774         },
 775         {
 776                 .name = "ab8500-rtc",
 777                 .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
 778                 .resources = ab8500_rtc_resources,
 779         },
 780         {
 781                 .name = "ab8500-charger",
 782                 .num_resources = ARRAY_SIZE(ab8500_charger_resources),
 783                 .resources = ab8500_charger_resources,
 784         },
 785         {
 786                 .name = "ab8500-btemp",
 787                 .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
 788                 .resources = ab8500_btemp_resources,
 789         },
 790         {
 791                 .name = "ab8500-fg",
 792                 .num_resources = ARRAY_SIZE(ab8500_fg_resources),
 793                 .resources = ab8500_fg_resources,
 794         },
 795         {
 796                 .name = "ab8500-chargalg",
 797                 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
 798                 .resources = ab8500_chargalg_resources,
 799         },
 800         {
 801                 .name = "ab8500-acc-det",
 802                 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
 803                 .resources = ab8500_av_acc_detect_resources,
 804         },
 805         {
 806                 .name = "ab8500-codec",
 807         },
 808
 809         {
 810                 .name = "ab8500-poweron-key",
 811                 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
 812                 .resources = ab8500_poweronkey_db_resources,
 813         },
 814         {
 815                 .name = "ab8500-pwm",
 816                 .id = 1,
 817         },
 818         {
 819                 .name = "ab8500-pwm",
 820                 .id = 2,
 821         },
 822         {
 823                 .name = "ab8500-pwm",
 824                 .id = 3,
 825         },
 826         { .name = "ab8500-leds", },
 827         {
 828                 .name = "ab8500-denc",
 829         },
 830         {
 831                 .name = "ab8500-temp",
 832                 .num_resources = ARRAY_SIZE(ab8500_temp_resources),
 833                 .resources = ab8500_temp_resources,
 834         },
 835 };
 836
 837 static struct mfd_cell __devinitdata ab8500_devs[] = {
 838         {
 839                 .name = "ab8500-gpio",
 840                 .num_resources = ARRAY_SIZE(ab8500_gpio_resources),
 841                 .resources = ab8500_gpio_resources,
 842         },
 843         {
 844                 .name = "ab8500-usb",
 845                 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
 846                 .resources = ab8500_usb_resources,
 847         },
 848 };
 849
 850 static struct mfd_cell __devinitdata ab9540_devs[] = {
 851         {
 852                 .name = "ab8500-gpio",
 853                 .num_resources = ARRAY_SIZE(ab9540_gpio_resources),
 854                 .resources = ab9540_gpio_resources,
 855         },
 856         {
 857                 .name = "ab9540-usb",
 858                 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
 859                 .resources = ab8500_usb_resources,
 860         },
 861 };
 862
 863 static ssize_t show_chip_id(struct device *dev,
 864                                 struct device_attribute *attr, char *buf)
 865 {
 866         struct ab8500 *ab8500;
 867
 868         ab8500 = dev_get_drvdata(dev);
 869         return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
 870 }
 871
 872 /*
 873  * ab8500 has switched off due to (SWITCH_OFF_STATUS):
 874  * 0x01 Swoff bit programming
 875  * 0x02 Thermal protection activation
 876  * 0x04 Vbat lower then BattOk falling threshold
 877  * 0x08 Watchdog expired
 878  * 0x10 Non presence of 32kHz clock
 879  * 0x20 Battery level lower than power on reset threshold
 880  * 0x40 Power on key 1 pressed longer than 10 seconds
 881  * 0x80 DB8500 thermal shutdown
 882  */
 883 static ssize_t show_switch_off_status(struct device *dev,
 884                                 struct device_attribute *attr, char *buf)
 885 {
 886         int ret;
 887         u8 value;
 888         struct ab8500 *ab8500;
 889
 890         ab8500 = dev_get_drvdata(dev);
 891         ret = get_register_interruptible(ab8500, AB8500_RTC,
 892                 AB8500_SWITCH_OFF_STATUS, &value);
 893         if (ret < 0)
 894                 return ret;
 895         return sprintf(buf, "%#x\n", value);
 896 }
 897
 898 /*
 899  * ab8500 has turned on due to (TURN_ON_STATUS):
 900  * 0x01 PORnVbat
 901  * 0x02 PonKey1dbF
 902  * 0x04 PonKey2dbF
 903  * 0x08 RTCAlarm
 904  * 0x10 MainChDet
 905  * 0x20 VbusDet
 906  * 0x40 UsbIDDetect
 907  * 0x80 Reserved
 908  */
 909 static ssize_t show_turn_on_status(struct device *dev,
 910                                 struct device_attribute *attr, char *buf)
 911 {
 912         int ret;
 913         u8 value;
 914         struct ab8500 *ab8500;
 915
 916         ab8500 = dev_get_drvdata(dev);
 917         ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
 918                 AB8500_TURN_ON_STATUS, &value);
 919         if (ret < 0)
 920                 return ret;
 921         return sprintf(buf, "%#x\n", value);
 922 }
 923
 924 static ssize_t show_ab9540_dbbrstn(struct device *dev,
 925                                 struct device_attribute *attr, char *buf)
 926 {
 927         struct ab8500 *ab8500;
 928         int ret;
 929         u8 value;
 930
 931         ab8500 = dev_get_drvdata(dev);
 932
 933         ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
 934                 AB9540_MODEM_CTRL2_REG, &value);
 935         if (ret < 0)
 936                 return ret;
 937
 938         return sprintf(buf, "%d\n",
 939                         (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
 940 }
 941
 942 static ssize_t store_ab9540_dbbrstn(struct device *dev,
 943         struct device_attribute *attr, const char *buf, size_t count)
 944 {
 945         struct ab8500 *ab8500;
 946         int ret = count;
 947         int err;
 948         u8 bitvalues;
 949
 950         ab8500 = dev_get_drvdata(dev);
 951
 952         if (count > 0) {
 953                 switch (buf[0]) {
 954                 case '0':
 955                         bitvalues = 0;
 956                         break;
 957                 case '1':
 958                         bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
 959                         break;
 960                 default:
 961                         goto exit;
 962                 }
 963
 964                 err = mask_and_set_register_interruptible(ab8500,
 965                         AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
 966                         AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
 967                 if (err)
 968                         dev_info(ab8500->dev,
 969                                 "Failed to set DBBRSTN %c, err %#x\n",
 970                                 buf[0], err);
 971         }
 972
 973 exit:
 974         return ret;
 975 }
 976
 977 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
 978 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
 979 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
 980 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
 981                         show_ab9540_dbbrstn, store_ab9540_dbbrstn);
 982
 983 static struct attribute *ab8500_sysfs_entries[] = {
 984         &dev_attr_chip_id.attr,
 985         &dev_attr_switch_off_status.attr,
 986         &dev_attr_turn_on_status.attr,
 987         NULL,
 988 };
 989
 990 static struct attribute *ab9540_sysfs_entries[] = {
 991         &dev_attr_chip_id.attr,
 992         &dev_attr_switch_off_status.attr,
 993         &dev_attr_turn_on_status.attr,
 994         &dev_attr_dbbrstn.attr,
 995         NULL,
 996 };
 997
 998 static struct attribute_group ab8500_attr_group = {
 999         .attrs  = ab8500_sysfs_entries,
1000 };
1001
1002 static struct attribute_group ab9540_attr_group = {
1003         .attrs  = ab9540_sysfs_entries,
1004 };
1005
1006 int __devinit ab8500_init(struct ab8500 *ab8500, enum ab8500_version version)
1007 {
1008         struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev);
1009         int ret;
1010         int i;
1011         u8 value;
1012
1013         if (plat)
1014                 ab8500->irq_base = plat->irq_base;
1015
1016         mutex_init(&ab8500->lock);
1017         mutex_init(&ab8500->irq_lock);
1018
1019         if (version != AB8500_VERSION_UNDEFINED)
1020                 ab8500->version = version;
1021         else {
1022                 ret = get_register_interruptible(ab8500, AB8500_MISC,
1023                         AB8500_IC_NAME_REG, &value);
1024                 if (ret < 0)
1025                         return ret;
1026
1027                 ab8500->version = value;
1028         }
1029
1030         ret = get_register_interruptible(ab8500, AB8500_MISC,
1031                 AB8500_REV_REG, &value);
1032         if (ret < 0)
1033                 return ret;
1034
1035         ab8500->chip_id = value;
1036
1037         dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1038                         ab8500_version_str[ab8500->version],
1039                         ab8500->chip_id >> 4,
1040                         ab8500->chip_id & 0x0F);
1041
1042         /* Configure AB8500 or AB9540 IRQ */
1043         if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
1044                 ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1045                 ab8500->irq_reg_offset = ab9540_irq_regoffset;
1046         } else {
1047                 ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1048                 ab8500->irq_reg_offset = ab8500_irq_regoffset;
1049         }
1050         ab8500->mask = kzalloc(ab8500->mask_size, GFP_KERNEL);
1051         if (!ab8500->mask)
1052                 return -ENOMEM;
1053         ab8500->oldmask = kzalloc(ab8500->mask_size, GFP_KERNEL);
1054         if (!ab8500->oldmask) {
1055                 ret = -ENOMEM;
1056                 goto out_freemask;
1057         }
1058         /*
1059          * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1060          * 0x01 Swoff bit programming
1061          * 0x02 Thermal protection activation
1062          * 0x04 Vbat lower then BattOk falling threshold
1063          * 0x08 Watchdog expired
1064          * 0x10 Non presence of 32kHz clock
1065          * 0x20 Battery level lower than power on reset threshold
1066          * 0x40 Power on key 1 pressed longer than 10 seconds
1067          * 0x80 DB8500 thermal shutdown
1068          */
1069
1070         ret = get_register_interruptible(ab8500, AB8500_RTC,
1071                 AB8500_SWITCH_OFF_STATUS, &value);
1072         if (ret < 0)
1073                 return ret;
1074         dev_info(ab8500->dev, "switch off status: %#x", value);
1075
1076         if (plat && plat->init)
1077                 plat->init(ab8500);
1078
1079         /* Clear and mask all interrupts */
1080         for (i = 0; i < ab8500->mask_size; i++) {
1081                 /*
1082                  * Interrupt register 12 doesn't exist prior to AB8500 version
1083                  * 2.0
1084                  */
1085                 if (ab8500->irq_reg_offset[i] == 11 &&
1086                                 is_ab8500_1p1_or_earlier(ab8500))
1087                         continue;
1088
1089                 get_register_interruptible(ab8500, AB8500_INTERRUPT,
1090                         AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1091                         &value);
1092                 set_register_interruptible(ab8500, AB8500_INTERRUPT,
1093                         AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1094         }
1095
1096         ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1097         if (ret)
1098                 goto out_freeoldmask;
1099
1100         for (i = 0; i < ab8500->mask_size; i++)
1101                 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1102
1103         if (ab8500->irq_base) {
1104                 ret = ab8500_irq_init(ab8500);
1105                 if (ret)
1106                         goto out_freeoldmask;
1107
1108                 ret = request_threaded_irq(ab8500->irq, NULL, ab8500_irq,
1109                                            IRQF_ONESHOT | IRQF_NO_SUSPEND,
1110                                            "ab8500", ab8500);
1111                 if (ret)
1112                         goto out_removeirq;
1113         }
1114
1115         ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs,
1116                               ARRAY_SIZE(abx500_common_devs), NULL,
1117                               ab8500->irq_base);
1118
1119         if (ret)
1120                 goto out_freeirq;
1121
1122         if (is_ab9540(ab8500))
1123                 ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1124                               ARRAY_SIZE(ab9540_devs), NULL,
1125                               ab8500->irq_base);
1126         else
1127                 ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1128                               ARRAY_SIZE(ab9540_devs), NULL,
1129                               ab8500->irq_base);
1130         if (ret)
1131                 goto out_freeirq;
1132
1133         if (is_ab9540(ab8500))
1134                 ret = sysfs_create_group(&ab8500->dev->kobj,
1135                                         &ab9540_attr_group);
1136         else
1137                 ret = sysfs_create_group(&ab8500->dev->kobj,
1138                                         &ab8500_attr_group);
1139         if (ret)
1140                 dev_err(ab8500->dev, "error creating sysfs entries\n");
1141         else
1142                 return ret;
1143
1144 out_freeirq:
1145         if (ab8500->irq_base)
1146                 free_irq(ab8500->irq, ab8500);
1147 out_removeirq:
1148         if (ab8500->irq_base)
1149                 ab8500_irq_remove(ab8500);
1150 out_freeoldmask:
1151         kfree(ab8500->oldmask);
1152 out_freemask:
1153         kfree(ab8500->mask);
1154
1155         return ret;
1156 }
1157
1158 int __devexit ab8500_exit(struct ab8500 *ab8500)
1159 {
1160         if (is_ab9540(ab8500))
1161                 sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group);
1162         else
1163                 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
1164         mfd_remove_devices(ab8500->dev);
1165         if (ab8500->irq_base) {
1166                 free_irq(ab8500->irq, ab8500);
1167                 ab8500_irq_remove(ab8500);
1168         }
1169         kfree(ab8500->oldmask);
1170         kfree(ab8500->mask);
1171
1172         return 0;
1173 }
1174
1175 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
1176 MODULE_DESCRIPTION("AB8500 MFD core");
1177 MODULE_LICENSE("GPL v2");