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 AB8500_IT_SOURCE19_REG          0x12
  36 #define AB8500_IT_SOURCE20_REG          0x13
  37 #define AB8500_IT_SOURCE21_REG          0x14
  38 #define AB8500_IT_SOURCE22_REG          0x15
  39 #define AB8500_IT_SOURCE23_REG          0x16
  40 #define AB8500_IT_SOURCE24_REG          0x17
  41
  42 /*
  43  * latch registers
  44  */
  45 #define AB8500_IT_LATCH1_REG            0x20
  46 #define AB8500_IT_LATCH2_REG            0x21
  47 #define AB8500_IT_LATCH3_REG            0x22
  48 #define AB8500_IT_LATCH4_REG            0x23
  49 #define AB8500_IT_LATCH5_REG            0x24
  50 #define AB8500_IT_LATCH6_REG            0x25
  51 #define AB8500_IT_LATCH7_REG            0x26
  52 #define AB8500_IT_LATCH8_REG            0x27
  53 #define AB8500_IT_LATCH9_REG            0x28
  54 #define AB8500_IT_LATCH10_REG           0x29
  55 #define AB8500_IT_LATCH12_REG           0x2B
  56 #define AB8500_IT_LATCH19_REG           0x32
  57 #define AB8500_IT_LATCH20_REG           0x33
  58 #define AB8500_IT_LATCH21_REG           0x34
  59 #define AB8500_IT_LATCH22_REG           0x35
  60 #define AB8500_IT_LATCH23_REG           0x36
  61 #define AB8500_IT_LATCH24_REG           0x37
  62
  63 /*
  64  * mask registers
  65  */
  66
  67 #define AB8500_IT_MASK1_REG             0x40
  68 #define AB8500_IT_MASK2_REG             0x41
  69 #define AB8500_IT_MASK3_REG             0x42
  70 #define AB8500_IT_MASK4_REG             0x43
  71 #define AB8500_IT_MASK5_REG             0x44
  72 #define AB8500_IT_MASK6_REG             0x45
  73 #define AB8500_IT_MASK7_REG             0x46
  74 #define AB8500_IT_MASK8_REG             0x47
  75 #define AB8500_IT_MASK9_REG             0x48
  76 #define AB8500_IT_MASK10_REG            0x49
  77 #define AB8500_IT_MASK11_REG            0x4A
  78 #define AB8500_IT_MASK12_REG            0x4B
  79 #define AB8500_IT_MASK13_REG            0x4C
  80 #define AB8500_IT_MASK14_REG            0x4D
  81 #define AB8500_IT_MASK15_REG            0x4E
  82 #define AB8500_IT_MASK16_REG            0x4F
  83 #define AB8500_IT_MASK17_REG            0x50
  84 #define AB8500_IT_MASK18_REG            0x51
  85 #define AB8500_IT_MASK19_REG            0x52
  86 #define AB8500_IT_MASK20_REG            0x53
  87 #define AB8500_IT_MASK21_REG            0x54
  88 #define AB8500_IT_MASK22_REG            0x55
  89 #define AB8500_IT_MASK23_REG            0x56
  90 #define AB8500_IT_MASK24_REG            0x57
  91
  92 #define AB8500_REV_REG                  0x80
  93 #define AB8500_IC_NAME_REG              0x82
  94 #define AB8500_SWITCH_OFF_STATUS        0x00
  95
  96 #define AB8500_TURN_ON_STATUS           0x00
  97
  98 /*
  99  * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
 100  * numbers are indexed into this array with (num / 8). The interupts are
 101  * defined in linux/mfd/ab8500.h
 102  *
 103  * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
 104  * offset 0.
 105  */
 106 /* AB8500 support */
 107 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
 108         0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
 109 };
 110
 111 static const char ab8500_version_str[][7] = {
 112         [AB8500_VERSION_AB8500] = "AB8500",
 113         [AB8500_VERSION_AB8505] = "AB8505",
 114         [AB8500_VERSION_AB9540] = "AB9540",
 115         [AB8500_VERSION_AB8540] = "AB8540",
 116 };
 117
 118 static int ab8500_get_chip_id(struct device *dev)
 119 {
 120         struct ab8500 *ab8500;
 121
 122         if (!dev)
 123                 return -EINVAL;
 124         ab8500 = dev_get_drvdata(dev->parent);
 125         return ab8500 ? (int)ab8500->chip_id : -EINVAL;
 126 }
 127
 128 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
 129         u8 reg, u8 data)
 130 {
 131         int ret;
 132         /*
 133          * Put the u8 bank and u8 register together into a an u16.
 134          * The bank on higher 8 bits and register in lower 8 bits.
 135          * */
 136         u16 addr = ((u16)bank) << 8 | reg;
 137
 138         dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
 139
 140         ret = mutex_lock_interruptible(&ab8500->lock);
 141         if (ret)
 142                 return ret;
 143
 144         ret = ab8500->write(ab8500, addr, data);
 145         if (ret < 0)
 146                 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
 147                         addr, ret);
 148         mutex_unlock(&ab8500->lock);
 149
 150         return ret;
 151 }
 152
 153 static int ab8500_set_register(struct device *dev, u8 bank,
 154         u8 reg, u8 value)
 155 {
 156         struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 157
 158         return set_register_interruptible(ab8500, bank, reg, value);
 159 }
 160
 161 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
 162         u8 reg, u8 *value)
 163 {
 164         int ret;
 165         /* put the u8 bank and u8 reg together into a an u16.
 166          * bank on higher 8 bits and reg in lower */
 167         u16 addr = ((u16)bank) << 8 | reg;
 168
 169         ret = mutex_lock_interruptible(&ab8500->lock);
 170         if (ret)
 171                 return ret;
 172
 173         ret = ab8500->read(ab8500, addr);
 174         if (ret < 0)
 175                 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
 176                         addr, ret);
 177         else
 178                 *value = ret;
 179
 180         mutex_unlock(&ab8500->lock);
 181         dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
 182
 183         return ret;
 184 }
 185
 186 static int ab8500_get_register(struct device *dev, u8 bank,
 187         u8 reg, u8 *value)
 188 {
 189         struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 190
 191         return get_register_interruptible(ab8500, bank, reg, value);
 192 }
 193
 194 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
 195         u8 reg, u8 bitmask, u8 bitvalues)
 196 {
 197         int ret;
 198         u8 data;
 199         /* put the u8 bank and u8 reg together into a an u16.
 200          * bank on higher 8 bits and reg in lower */
 201         u16 addr = ((u16)bank) << 8 | reg;
 202
 203         ret = mutex_lock_interruptible(&ab8500->lock);
 204         if (ret)
 205                 return ret;
 206
 207         ret = ab8500->read(ab8500, addr);
 208         if (ret < 0) {
 209                 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
 210                         addr, ret);
 211                 goto out;
 212         }
 213
 214         data = (u8)ret;
 215         data = (~bitmask & data) | (bitmask & bitvalues);
 216
 217         ret = ab8500->write(ab8500, addr, data);
 218         if (ret < 0)
 219                 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
 220                         addr, ret);
 221
 222         dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr, data);
 223 out:
 224         mutex_unlock(&ab8500->lock);
 225         return ret;
 226 }
 227
 228 static int ab8500_mask_and_set_register(struct device *dev,
 229         u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
 230 {
 231         struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 232
 233         return mask_and_set_register_interruptible(ab8500, bank, reg,
 234                 bitmask, bitvalues);
 235
 236 }
 237
 238 static struct abx500_ops ab8500_ops = {
 239         .get_chip_id = ab8500_get_chip_id,
 240         .get_register = ab8500_get_register,
 241         .set_register = ab8500_set_register,
 242         .get_register_page = NULL,
 243         .set_register_page = NULL,
 244         .mask_and_set_register = ab8500_mask_and_set_register,
 245         .event_registers_startup_state_get = NULL,
 246         .startup_irq_enabled = NULL,
 247 };
 248
 249 static void ab8500_irq_lock(struct irq_data *data)
 250 {
 251         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 252
 253         mutex_lock(&ab8500->irq_lock);
 254 }
 255
 256 static void ab8500_irq_sync_unlock(struct irq_data *data)
 257 {
 258         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 259         int i;
 260
 261         for (i = 0; i < ab8500->mask_size; i++) {
 262                 u8 old = ab8500->oldmask[i];
 263                 u8 new = ab8500->mask[i];
 264                 int reg;
 265
 266                 if (new == old)
 267                         continue;
 268
 269                 /*
 270                  * Interrupt register 12 doesn't exist prior to AB8500 version
 271                  * 2.0
 272                  */
 273                 if (ab8500->irq_reg_offset[i] == 11 &&
 274                         is_ab8500_1p1_or_earlier(ab8500))
 275                         continue;
 276
 277                 ab8500->oldmask[i] = new;
 278
 279                 reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
 280                 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
 281         }
 282
 283         mutex_unlock(&ab8500->irq_lock);
 284 }
 285
 286 static void ab8500_irq_mask(struct irq_data *data)
 287 {
 288         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 289         int offset = data->irq - ab8500->irq_base;
 290         int index = offset / 8;
 291         int mask = 1 << (offset % 8);
 292
 293         ab8500->mask[index] |= mask;
 294 }
 295
 296 static void ab8500_irq_unmask(struct irq_data *data)
 297 {
 298         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 299         int offset = data->irq - ab8500->irq_base;
 300         int index = offset / 8;
 301         int mask = 1 << (offset % 8);
 302
 303         ab8500->mask[index] &= ~mask;
 304 }
 305
 306 static struct irq_chip ab8500_irq_chip = {
 307         .name                   = "ab8500",
 308         .irq_bus_lock           = ab8500_irq_lock,
 309         .irq_bus_sync_unlock    = ab8500_irq_sync_unlock,
 310         .irq_mask               = ab8500_irq_mask,
 311         .irq_disable            = ab8500_irq_mask,
 312         .irq_unmask             = ab8500_irq_unmask,
 313 };
 314
 315 static irqreturn_t ab8500_irq(int irq, void *dev)
 316 {
 317         struct ab8500 *ab8500 = dev;
 318         int i;
 319
 320         dev_vdbg(ab8500->dev, "interrupt\n");
 321
 322         for (i = 0; i < ab8500->mask_size; i++) {
 323                 int regoffset = ab8500->irq_reg_offset[i];
 324                 int status;
 325                 u8 value;
 326
 327                 /*
 328                  * Interrupt register 12 doesn't exist prior to AB8500 version
 329                  * 2.0
 330                  */
 331                 if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500))
 332                         continue;
 333
 334                 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
 335                         AB8500_IT_LATCH1_REG + regoffset, &value);
 336                 if (status < 0 || value == 0)
 337                         continue;
 338
 339                 do {
 340                         int bit = __ffs(value);
 341                         int line = i * 8 + bit;
 342
 343                         handle_nested_irq(ab8500->irq_base + line);
 344                         value &= ~(1 << bit);
 345                 } while (value);
 346         }
 347
 348         return IRQ_HANDLED;
 349 }
 350
 351 static int ab8500_irq_init(struct ab8500 *ab8500)
 352 {
 353         int base = ab8500->irq_base;
 354         int irq;
 355         int num_irqs;
 356
 357         num_irqs = AB8500_NR_IRQS;
 358
 359         for (irq = base; irq < base + num_irqs; irq++) {
 360                 irq_set_chip_data(irq, ab8500);
 361                 irq_set_chip_and_handler(irq, &ab8500_irq_chip,
 362                                          handle_simple_irq);
 363                 irq_set_nested_thread(irq, 1);
 364 #ifdef CONFIG_ARM
 365                 set_irq_flags(irq, IRQF_VALID);
 366 #else
 367                 irq_set_noprobe(irq);
 368 #endif
 369         }
 370
 371         return 0;
 372 }
 373
 374 static void ab8500_irq_remove(struct ab8500 *ab8500)
 375 {
 376         int base = ab8500->irq_base;
 377         int irq;
 378         int num_irqs;
 379
 380         num_irqs = AB8500_NR_IRQS;
 381
 382         for (irq = base; irq < base + num_irqs; irq++) {
 383 #ifdef CONFIG_ARM
 384                 set_irq_flags(irq, 0);
 385 #endif
 386                 irq_set_chip_and_handler(irq, NULL, NULL);
 387                 irq_set_chip_data(irq, NULL);
 388         }
 389 }
 390
 391 static struct resource __devinitdata ab8500_gpio_resources[] = {
 392         {
 393                 .name   = "GPIO_INT6",
 394                 .start  = AB8500_INT_GPIO6R,
 395                 .end    = AB8500_INT_GPIO41F,
 396                 .flags  = IORESOURCE_IRQ,
 397         }
 398 };
 399
 400 static struct resource __devinitdata ab8500_gpadc_resources[] = {
 401         {
 402                 .name   = "HW_CONV_END",
 403                 .start  = AB8500_INT_GP_HW_ADC_CONV_END,
 404                 .end    = AB8500_INT_GP_HW_ADC_CONV_END,
 405                 .flags  = IORESOURCE_IRQ,
 406         },
 407         {
 408                 .name   = "SW_CONV_END",
 409                 .start  = AB8500_INT_GP_SW_ADC_CONV_END,
 410                 .end    = AB8500_INT_GP_SW_ADC_CONV_END,
 411                 .flags  = IORESOURCE_IRQ,
 412         },
 413 };
 414
 415 static struct resource __devinitdata ab8500_rtc_resources[] = {
 416         {
 417                 .name   = "60S",
 418                 .start  = AB8500_INT_RTC_60S,
 419                 .end    = AB8500_INT_RTC_60S,
 420                 .flags  = IORESOURCE_IRQ,
 421         },
 422         {
 423                 .name   = "ALARM",
 424                 .start  = AB8500_INT_RTC_ALARM,
 425                 .end    = AB8500_INT_RTC_ALARM,
 426                 .flags  = IORESOURCE_IRQ,
 427         },
 428 };
 429
 430 static struct resource __devinitdata ab8500_poweronkey_db_resources[] = {
 431         {
 432                 .name   = "ONKEY_DBF",
 433                 .start  = AB8500_INT_PON_KEY1DB_F,
 434                 .end    = AB8500_INT_PON_KEY1DB_F,
 435                 .flags  = IORESOURCE_IRQ,
 436         },
 437         {
 438                 .name   = "ONKEY_DBR",
 439                 .start  = AB8500_INT_PON_KEY1DB_R,
 440                 .end    = AB8500_INT_PON_KEY1DB_R,
 441                 .flags  = IORESOURCE_IRQ,
 442         },
 443 };
 444
 445 static struct resource __devinitdata ab8500_av_acc_detect_resources[] = {
 446         {
 447                .name = "ACC_DETECT_1DB_F",
 448                .start = AB8500_INT_ACC_DETECT_1DB_F,
 449                .end = AB8500_INT_ACC_DETECT_1DB_F,
 450                .flags = IORESOURCE_IRQ,
 451         },
 452         {
 453                .name = "ACC_DETECT_1DB_R",
 454                .start = AB8500_INT_ACC_DETECT_1DB_R,
 455                .end = AB8500_INT_ACC_DETECT_1DB_R,
 456                .flags = IORESOURCE_IRQ,
 457         },
 458         {
 459                .name = "ACC_DETECT_21DB_F",
 460                .start = AB8500_INT_ACC_DETECT_21DB_F,
 461                .end = AB8500_INT_ACC_DETECT_21DB_F,
 462                .flags = IORESOURCE_IRQ,
 463         },
 464         {
 465                .name = "ACC_DETECT_21DB_R",
 466                .start = AB8500_INT_ACC_DETECT_21DB_R,
 467                .end = AB8500_INT_ACC_DETECT_21DB_R,
 468                .flags = IORESOURCE_IRQ,
 469         },
 470         {
 471                .name = "ACC_DETECT_22DB_F",
 472                .start = AB8500_INT_ACC_DETECT_22DB_F,
 473                .end = AB8500_INT_ACC_DETECT_22DB_F,
 474                .flags = IORESOURCE_IRQ,
 475         },
 476         {
 477                .name = "ACC_DETECT_22DB_R",
 478                .start = AB8500_INT_ACC_DETECT_22DB_R,
 479                .end = AB8500_INT_ACC_DETECT_22DB_R,
 480                .flags = IORESOURCE_IRQ,
 481         },
 482 };
 483
 484 static struct resource __devinitdata ab8500_charger_resources[] = {
 485         {
 486                 .name = "MAIN_CH_UNPLUG_DET",
 487                 .start = AB8500_INT_MAIN_CH_UNPLUG_DET,
 488                 .end = AB8500_INT_MAIN_CH_UNPLUG_DET,
 489                 .flags = IORESOURCE_IRQ,
 490         },
 491         {
 492                 .name = "MAIN_CHARGE_PLUG_DET",
 493                 .start = AB8500_INT_MAIN_CH_PLUG_DET,
 494                 .end = AB8500_INT_MAIN_CH_PLUG_DET,
 495                 .flags = IORESOURCE_IRQ,
 496         },
 497         {
 498                 .name = "VBUS_DET_R",
 499                 .start = AB8500_INT_VBUS_DET_R,
 500                 .end = AB8500_INT_VBUS_DET_R,
 501                 .flags = IORESOURCE_IRQ,
 502         },
 503         {
 504                 .name = "VBUS_DET_F",
 505                 .start = AB8500_INT_VBUS_DET_F,
 506                 .end = AB8500_INT_VBUS_DET_F,
 507                 .flags = IORESOURCE_IRQ,
 508         },
 509         {
 510                 .name = "USB_LINK_STATUS",
 511                 .start = AB8500_INT_USB_LINK_STATUS,
 512                 .end = AB8500_INT_USB_LINK_STATUS,
 513                 .flags = IORESOURCE_IRQ,
 514         },
 515         {
 516                 .name = "USB_CHARGE_DET_DONE",
 517                 .start = AB8500_INT_USB_CHG_DET_DONE,
 518                 .end = AB8500_INT_USB_CHG_DET_DONE,
 519                 .flags = IORESOURCE_IRQ,
 520         },
 521         {
 522                 .name = "VBUS_OVV",
 523                 .start = AB8500_INT_VBUS_OVV,
 524                 .end = AB8500_INT_VBUS_OVV,
 525                 .flags = IORESOURCE_IRQ,
 526         },
 527         {
 528                 .name = "USB_CH_TH_PROT_R",
 529                 .start = AB8500_INT_USB_CH_TH_PROT_R,
 530                 .end = AB8500_INT_USB_CH_TH_PROT_R,
 531                 .flags = IORESOURCE_IRQ,
 532         },
 533         {
 534                 .name = "USB_CH_TH_PROT_F",
 535                 .start = AB8500_INT_USB_CH_TH_PROT_F,
 536                 .end = AB8500_INT_USB_CH_TH_PROT_F,
 537                 .flags = IORESOURCE_IRQ,
 538         },
 539         {
 540                 .name = "MAIN_EXT_CH_NOT_OK",
 541                 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 542                 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 543                 .flags = IORESOURCE_IRQ,
 544         },
 545         {
 546                 .name = "MAIN_CH_TH_PROT_R",
 547                 .start = AB8500_INT_MAIN_CH_TH_PROT_R,
 548                 .end = AB8500_INT_MAIN_CH_TH_PROT_R,
 549                 .flags = IORESOURCE_IRQ,
 550         },
 551         {
 552                 .name = "MAIN_CH_TH_PROT_F",
 553                 .start = AB8500_INT_MAIN_CH_TH_PROT_F,
 554                 .end = AB8500_INT_MAIN_CH_TH_PROT_F,
 555                 .flags = IORESOURCE_IRQ,
 556         },
 557         {
 558                 .name = "USB_CHARGER_NOT_OKR",
 559                 .start = AB8500_INT_USB_CHARGER_NOT_OK,
 560                 .end = AB8500_INT_USB_CHARGER_NOT_OK,
 561                 .flags = IORESOURCE_IRQ,
 562         },
 563         {
 564                 .name = "USB_CHARGER_NOT_OKF",
 565                 .start = AB8500_INT_USB_CHARGER_NOT_OKF,
 566                 .end = AB8500_INT_USB_CHARGER_NOT_OKF,
 567                 .flags = IORESOURCE_IRQ,
 568         },
 569         {
 570                 .name = "CH_WD_EXP",
 571                 .start = AB8500_INT_CH_WD_EXP,
 572                 .end = AB8500_INT_CH_WD_EXP,
 573                 .flags = IORESOURCE_IRQ,
 574         },
 575 };
 576
 577 static struct resource __devinitdata ab8500_btemp_resources[] = {
 578         {
 579                 .name = "BAT_CTRL_INDB",
 580                 .start = AB8500_INT_BAT_CTRL_INDB,
 581                 .end = AB8500_INT_BAT_CTRL_INDB,
 582                 .flags = IORESOURCE_IRQ,
 583         },
 584         {
 585                 .name = "BTEMP_LOW",
 586                 .start = AB8500_INT_BTEMP_LOW,
 587                 .end = AB8500_INT_BTEMP_LOW,
 588                 .flags = IORESOURCE_IRQ,
 589         },
 590         {
 591                 .name = "BTEMP_HIGH",
 592                 .start = AB8500_INT_BTEMP_HIGH,
 593                 .end = AB8500_INT_BTEMP_HIGH,
 594                 .flags = IORESOURCE_IRQ,
 595         },
 596         {
 597                 .name = "BTEMP_LOW_MEDIUM",
 598                 .start = AB8500_INT_BTEMP_LOW_MEDIUM,
 599                 .end = AB8500_INT_BTEMP_LOW_MEDIUM,
 600                 .flags = IORESOURCE_IRQ,
 601         },
 602         {
 603                 .name = "BTEMP_MEDIUM_HIGH",
 604                 .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
 605                 .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
 606                 .flags = IORESOURCE_IRQ,
 607         },
 608 };
 609
 610 static struct resource __devinitdata ab8500_fg_resources[] = {
 611         {
 612                 .name = "NCONV_ACCU",
 613                 .start = AB8500_INT_CCN_CONV_ACC,
 614                 .end = AB8500_INT_CCN_CONV_ACC,
 615                 .flags = IORESOURCE_IRQ,
 616         },
 617         {
 618                 .name = "BATT_OVV",
 619                 .start = AB8500_INT_BATT_OVV,
 620                 .end = AB8500_INT_BATT_OVV,
 621                 .flags = IORESOURCE_IRQ,
 622         },
 623         {
 624                 .name = "LOW_BAT_F",
 625                 .start = AB8500_INT_LOW_BAT_F,
 626                 .end = AB8500_INT_LOW_BAT_F,
 627                 .flags = IORESOURCE_IRQ,
 628         },
 629         {
 630                 .name = "LOW_BAT_R",
 631                 .start = AB8500_INT_LOW_BAT_R,
 632                 .end = AB8500_INT_LOW_BAT_R,
 633                 .flags = IORESOURCE_IRQ,
 634         },
 635         {
 636                 .name = "CC_INT_CALIB",
 637                 .start = AB8500_INT_CC_INT_CALIB,
 638                 .end = AB8500_INT_CC_INT_CALIB,
 639                 .flags = IORESOURCE_IRQ,
 640         },
 641 };
 642
 643 static struct resource __devinitdata ab8500_chargalg_resources[] = {};
 644
 645 #ifdef CONFIG_DEBUG_FS
 646 static struct resource __devinitdata ab8500_debug_resources[] = {
 647         {
 648                 .name   = "IRQ_FIRST",
 649                 .start  = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 650                 .end    = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 651                 .flags  = IORESOURCE_IRQ,
 652         },
 653         {
 654                 .name   = "IRQ_LAST",
 655                 .start  = AB8500_INT_USB_CHARGER_NOT_OKF,
 656                 .end    = AB8500_INT_USB_CHARGER_NOT_OKF,
 657                 .flags  = IORESOURCE_IRQ,
 658         },
 659 };
 660 #endif
 661
 662 static struct resource __devinitdata ab8500_usb_resources[] = {
 663         {
 664                 .name = "ID_WAKEUP_R",
 665                 .start = AB8500_INT_ID_WAKEUP_R,
 666                 .end = AB8500_INT_ID_WAKEUP_R,
 667                 .flags = IORESOURCE_IRQ,
 668         },
 669         {
 670                 .name = "ID_WAKEUP_F",
 671                 .start = AB8500_INT_ID_WAKEUP_F,
 672                 .end = AB8500_INT_ID_WAKEUP_F,
 673                 .flags = IORESOURCE_IRQ,
 674         },
 675         {
 676                 .name = "VBUS_DET_F",
 677                 .start = AB8500_INT_VBUS_DET_F,
 678                 .end = AB8500_INT_VBUS_DET_F,
 679                 .flags = IORESOURCE_IRQ,
 680         },
 681         {
 682                 .name = "VBUS_DET_R",
 683                 .start = AB8500_INT_VBUS_DET_R,
 684                 .end = AB8500_INT_VBUS_DET_R,
 685                 .flags = IORESOURCE_IRQ,
 686         },
 687         {
 688                 .name = "USB_LINK_STATUS",
 689                 .start = AB8500_INT_USB_LINK_STATUS,
 690                 .end = AB8500_INT_USB_LINK_STATUS,
 691                 .flags = IORESOURCE_IRQ,
 692         },
 693         {
 694                 .name = "USB_ADP_PROBE_PLUG",
 695                 .start = AB8500_INT_ADP_PROBE_PLUG,
 696                 .end = AB8500_INT_ADP_PROBE_PLUG,
 697                 .flags = IORESOURCE_IRQ,
 698         },
 699         {
 700                 .name = "USB_ADP_PROBE_UNPLUG",
 701                 .start = AB8500_INT_ADP_PROBE_UNPLUG,
 702                 .end = AB8500_INT_ADP_PROBE_UNPLUG,
 703                 .flags = IORESOURCE_IRQ,
 704         },
 705 };
 706
 707 static struct resource __devinitdata ab8500_temp_resources[] = {
 708         {
 709                 .name  = "AB8500_TEMP_WARM",
 710                 .start = AB8500_INT_TEMP_WARM,
 711                 .end   = AB8500_INT_TEMP_WARM,
 712                 .flags = IORESOURCE_IRQ,
 713         },
 714 };
 715
 716 static struct mfd_cell __devinitdata ab8500_devs[] = {
 717 #ifdef CONFIG_DEBUG_FS
 718         {
 719                 .name = "ab8500-debug",
 720                 .num_resources = ARRAY_SIZE(ab8500_debug_resources),
 721                 .resources = ab8500_debug_resources,
 722         },
 723 #endif
 724         {
 725                 .name = "ab8500-sysctrl",
 726         },
 727         {
 728                 .name = "ab8500-regulator",
 729         },
 730         {
 731                 .name = "ab8500-gpio",
 732                 .num_resources = ARRAY_SIZE(ab8500_gpio_resources),
 733                 .resources = ab8500_gpio_resources,
 734         },
 735         {
 736                 .name = "ab8500-gpadc",
 737                 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
 738                 .resources = ab8500_gpadc_resources,
 739         },
 740         {
 741                 .name = "ab8500-rtc",
 742                 .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
 743                 .resources = ab8500_rtc_resources,
 744         },
 745         {
 746                 .name = "ab8500-charger",
 747                 .num_resources = ARRAY_SIZE(ab8500_charger_resources),
 748                 .resources = ab8500_charger_resources,
 749         },
 750         {
 751                 .name = "ab8500-btemp",
 752                 .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
 753                 .resources = ab8500_btemp_resources,
 754         },
 755         {
 756                 .name = "ab8500-fg",
 757                 .num_resources = ARRAY_SIZE(ab8500_fg_resources),
 758                 .resources = ab8500_fg_resources,
 759         },
 760         {
 761                 .name = "ab8500-chargalg",
 762                 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
 763                 .resources = ab8500_chargalg_resources,
 764         },
 765         {
 766                 .name = "ab8500-acc-det",
 767                 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
 768                 .resources = ab8500_av_acc_detect_resources,
 769         },
 770         {
 771                 .name = "ab8500-codec",
 772         },
 773         {
 774                 .name = "ab8500-usb",
 775                 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
 776                 .resources = ab8500_usb_resources,
 777         },
 778         {
 779                 .name = "ab8500-poweron-key",
 780                 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
 781                 .resources = ab8500_poweronkey_db_resources,
 782         },
 783         {
 784                 .name = "ab8500-pwm",
 785                 .id = 1,
 786         },
 787         {
 788                 .name = "ab8500-pwm",
 789                 .id = 2,
 790         },
 791         {
 792                 .name = "ab8500-pwm",
 793                 .id = 3,
 794         },
 795         { .name = "ab8500-leds", },
 796         {
 797                 .name = "ab8500-denc",
 798         },
 799         {
 800                 .name = "ab8500-temp",
 801                 .num_resources = ARRAY_SIZE(ab8500_temp_resources),
 802                 .resources = ab8500_temp_resources,
 803         },
 804 };
 805
 806 static ssize_t show_chip_id(struct device *dev,
 807                                 struct device_attribute *attr, char *buf)
 808 {
 809         struct ab8500 *ab8500;
 810
 811         ab8500 = dev_get_drvdata(dev);
 812         return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
 813 }
 814
 815 /*
 816  * ab8500 has switched off due to (SWITCH_OFF_STATUS):
 817  * 0x01 Swoff bit programming
 818  * 0x02 Thermal protection activation
 819  * 0x04 Vbat lower then BattOk falling threshold
 820  * 0x08 Watchdog expired
 821  * 0x10 Non presence of 32kHz clock
 822  * 0x20 Battery level lower than power on reset threshold
 823  * 0x40 Power on key 1 pressed longer than 10 seconds
 824  * 0x80 DB8500 thermal shutdown
 825  */
 826 static ssize_t show_switch_off_status(struct device *dev,
 827                                 struct device_attribute *attr, char *buf)
 828 {
 829         int ret;
 830         u8 value;
 831         struct ab8500 *ab8500;
 832
 833         ab8500 = dev_get_drvdata(dev);
 834         ret = get_register_interruptible(ab8500, AB8500_RTC,
 835                 AB8500_SWITCH_OFF_STATUS, &value);
 836         if (ret < 0)
 837                 return ret;
 838         return sprintf(buf, "%#x\n", value);
 839 }
 840
 841 /*
 842  * ab8500 has turned on due to (TURN_ON_STATUS):
 843  * 0x01 PORnVbat
 844  * 0x02 PonKey1dbF
 845  * 0x04 PonKey2dbF
 846  * 0x08 RTCAlarm
 847  * 0x10 MainChDet
 848  * 0x20 VbusDet
 849  * 0x40 UsbIDDetect
 850  * 0x80 Reserved
 851  */
 852 static ssize_t show_turn_on_status(struct device *dev,
 853                                 struct device_attribute *attr, char *buf)
 854 {
 855         int ret;
 856         u8 value;
 857         struct ab8500 *ab8500;
 858
 859         ab8500 = dev_get_drvdata(dev);
 860         ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
 861                 AB8500_TURN_ON_STATUS, &value);
 862         if (ret < 0)
 863                 return ret;
 864         return sprintf(buf, "%#x\n", value);
 865 }
 866
 867 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
 868 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
 869 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
 870
 871 static struct attribute *ab8500_sysfs_entries[] = {
 872         &dev_attr_chip_id.attr,
 873         &dev_attr_switch_off_status.attr,
 874         &dev_attr_turn_on_status.attr,
 875         NULL,
 876 };
 877
 878 static struct attribute_group ab8500_attr_group = {
 879         .attrs  = ab8500_sysfs_entries,
 880 };
 881
 882 int __devinit ab8500_init(struct ab8500 *ab8500, enum ab8500_version version)
 883 {
 884         struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev);
 885         int ret;
 886         int i;
 887         u8 value;
 888
 889         if (plat)
 890                 ab8500->irq_base = plat->irq_base;
 891
 892         mutex_init(&ab8500->lock);
 893         mutex_init(&ab8500->irq_lock);
 894
 895         if (version != AB8500_VERSION_UNDEFINED)
 896                 ab8500->version = version;
 897         else {
 898                 ret = get_register_interruptible(ab8500, AB8500_MISC,
 899                         AB8500_IC_NAME_REG, &value);
 900                 if (ret < 0)
 901                         return ret;
 902
 903                 ab8500->version = value;
 904         }
 905
 906         ret = get_register_interruptible(ab8500, AB8500_MISC,
 907                 AB8500_REV_REG, &value);
 908         if (ret < 0)
 909                 return ret;
 910
 911         ab8500->chip_id = value;
 912
 913         dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
 914                         ab8500_version_str[ab8500->version],
 915                         ab8500->chip_id >> 4,
 916                         ab8500->chip_id & 0x0F);
 917
 918         ab8500->mask_size = AB8500_NUM_IRQ_REGS;
 919         ab8500->irq_reg_offset = ab8500_irq_regoffset;
 920         ab8500->mask = kzalloc(ab8500->mask_size, GFP_KERNEL);
 921         if (!ab8500->mask)
 922                 return -ENOMEM;
 923         ab8500->oldmask = kzalloc(ab8500->mask_size, GFP_KERNEL);
 924         if (!ab8500->oldmask) {
 925                 ret = -ENOMEM;
 926                 goto out_freemask;
 927         }
 928         /*
 929          * ab8500 has switched off due to (SWITCH_OFF_STATUS):
 930          * 0x01 Swoff bit programming
 931          * 0x02 Thermal protection activation
 932          * 0x04 Vbat lower then BattOk falling threshold
 933          * 0x08 Watchdog expired
 934          * 0x10 Non presence of 32kHz clock
 935          * 0x20 Battery level lower than power on reset threshold
 936          * 0x40 Power on key 1 pressed longer than 10 seconds
 937          * 0x80 DB8500 thermal shutdown
 938          */
 939
 940         ret = get_register_interruptible(ab8500, AB8500_RTC,
 941                 AB8500_SWITCH_OFF_STATUS, &value);
 942         if (ret < 0)
 943                 return ret;
 944         dev_info(ab8500->dev, "switch off status: %#x", value);
 945
 946         if (plat && plat->init)
 947                 plat->init(ab8500);
 948
 949         /* Clear and mask all interrupts */
 950         for (i = 0; i < ab8500->mask_size; i++) {
 951                 /*
 952                  * Interrupt register 12 doesn't exist prior to AB8500 version
 953                  * 2.0
 954                  */
 955                 if (ab8500->irq_reg_offset[i] == 11 &&
 956                                 is_ab8500_1p1_or_earlier(ab8500))
 957                         continue;
 958
 959                 get_register_interruptible(ab8500, AB8500_INTERRUPT,
 960                         AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
 961                         &value);
 962                 set_register_interruptible(ab8500, AB8500_INTERRUPT,
 963                         AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
 964         }
 965
 966         ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
 967         if (ret)
 968                 goto out_freeoldmask;
 969
 970         for (i = 0; i < ab8500->mask_size; i++)
 971                 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
 972
 973         if (ab8500->irq_base) {
 974                 ret = ab8500_irq_init(ab8500);
 975                 if (ret)
 976                         goto out_freeoldmask;
 977
 978                 ret = request_threaded_irq(ab8500->irq, NULL, ab8500_irq,
 979                                            IRQF_ONESHOT | IRQF_NO_SUSPEND,
 980                                            "ab8500", ab8500);
 981                 if (ret)
 982                         goto out_removeirq;
 983         }
 984
 985         ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
 986                               ARRAY_SIZE(ab8500_devs), NULL,
 987                               ab8500->irq_base);
 988         if (ret)
 989                 goto out_freeirq;
 990
 991         ret = sysfs_create_group(&ab8500->dev->kobj, &ab8500_attr_group);
 992         if (ret)
 993                 dev_err(ab8500->dev, "error creating sysfs entries\n");
 994
 995         return ret;
 996
 997 out_freeirq:
 998         if (ab8500->irq_base)
 999                 free_irq(ab8500->irq, ab8500);
1000 out_removeirq:
1001         if (ab8500->irq_base)
1002                 ab8500_irq_remove(ab8500);
1003 out_freeoldmask:
1004         kfree(ab8500->oldmask);
1005 out_freemask:
1006         kfree(ab8500->mask);
1007
1008         return ret;
1009 }
1010
1011 int __devexit ab8500_exit(struct ab8500 *ab8500)
1012 {
1013         sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
1014         mfd_remove_devices(ab8500->dev);
1015         if (ab8500->irq_base) {
1016                 free_irq(ab8500->irq, ab8500);
1017                 ab8500_irq_remove(ab8500);
1018         }
1019         kfree(ab8500->oldmask);
1020         kfree(ab8500->mask);
1021
1022         return 0;
1023 }
1024
1025 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
1026 MODULE_DESCRIPTION("AB8500 MFD core");
1027 MODULE_LICENSE("GPL v2");