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/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_SWITCH_OFF_STATUS        0x00
  94
  95 #define AB8500_TURN_ON_STATUS           0x00
  96
  97 /*
  98  * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
  99  * numbers are indexed into this array with (num / 8).
 100  *
 101  * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
 102  * offset 0.
 103  */
 104 static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
 105         0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
 106 };
 107
 108 static int ab8500_get_chip_id(struct device *dev)
 109 {
 110         struct ab8500 *ab8500;
 111
 112         if (!dev)
 113                 return -EINVAL;
 114         ab8500 = dev_get_drvdata(dev->parent);
 115         return ab8500 ? (int)ab8500->chip_id : -EINVAL;
 116 }
 117
 118 static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
 119         u8 reg, u8 data)
 120 {
 121         int ret;
 122         /*
 123          * Put the u8 bank and u8 register together into a an u16.
 124          * The bank on higher 8 bits and register in lower 8 bits.
 125          * */
 126         u16 addr = ((u16)bank) << 8 | reg;
 127
 128         dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
 129
 130         ret = mutex_lock_interruptible(&ab8500->lock);
 131         if (ret)
 132                 return ret;
 133
 134         ret = ab8500->write(ab8500, addr, data);
 135         if (ret < 0)
 136                 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
 137                         addr, ret);
 138         mutex_unlock(&ab8500->lock);
 139
 140         return ret;
 141 }
 142
 143 static int ab8500_set_register(struct device *dev, u8 bank,
 144         u8 reg, u8 value)
 145 {
 146         struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 147
 148         return set_register_interruptible(ab8500, bank, reg, value);
 149 }
 150
 151 static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
 152         u8 reg, u8 *value)
 153 {
 154         int ret;
 155         /* put the u8 bank and u8 reg together into a an u16.
 156          * bank on higher 8 bits and reg in lower */
 157         u16 addr = ((u16)bank) << 8 | reg;
 158
 159         ret = mutex_lock_interruptible(&ab8500->lock);
 160         if (ret)
 161                 return ret;
 162
 163         ret = ab8500->read(ab8500, addr);
 164         if (ret < 0)
 165                 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
 166                         addr, ret);
 167         else
 168                 *value = ret;
 169
 170         mutex_unlock(&ab8500->lock);
 171         dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
 172
 173         return ret;
 174 }
 175
 176 static int ab8500_get_register(struct device *dev, u8 bank,
 177         u8 reg, u8 *value)
 178 {
 179         struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 180
 181         return get_register_interruptible(ab8500, bank, reg, value);
 182 }
 183
 184 static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
 185         u8 reg, u8 bitmask, u8 bitvalues)
 186 {
 187         int ret;
 188         u8 data;
 189         /* put the u8 bank and u8 reg together into a an u16.
 190          * bank on higher 8 bits and reg in lower */
 191         u16 addr = ((u16)bank) << 8 | reg;
 192
 193         ret = mutex_lock_interruptible(&ab8500->lock);
 194         if (ret)
 195                 return ret;
 196
 197         ret = ab8500->read(ab8500, addr);
 198         if (ret < 0) {
 199                 dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
 200                         addr, ret);
 201                 goto out;
 202         }
 203
 204         data = (u8)ret;
 205         data = (~bitmask & data) | (bitmask & bitvalues);
 206
 207         ret = ab8500->write(ab8500, addr, data);
 208         if (ret < 0)
 209                 dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
 210                         addr, ret);
 211
 212         dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr, data);
 213 out:
 214         mutex_unlock(&ab8500->lock);
 215         return ret;
 216 }
 217
 218 static int ab8500_mask_and_set_register(struct device *dev,
 219         u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
 220 {
 221         struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 222
 223         return mask_and_set_register_interruptible(ab8500, bank, reg,
 224                 bitmask, bitvalues);
 225
 226 }
 227
 228 static struct abx500_ops ab8500_ops = {
 229         .get_chip_id = ab8500_get_chip_id,
 230         .get_register = ab8500_get_register,
 231         .set_register = ab8500_set_register,
 232         .get_register_page = NULL,
 233         .set_register_page = NULL,
 234         .mask_and_set_register = ab8500_mask_and_set_register,
 235         .event_registers_startup_state_get = NULL,
 236         .startup_irq_enabled = NULL,
 237 };
 238
 239 static void ab8500_irq_lock(struct irq_data *data)
 240 {
 241         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 242
 243         mutex_lock(&ab8500->irq_lock);
 244 }
 245
 246 static void ab8500_irq_sync_unlock(struct irq_data *data)
 247 {
 248         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 249         int i;
 250
 251         for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
 252                 u8 old = ab8500->oldmask[i];
 253                 u8 new = ab8500->mask[i];
 254                 int reg;
 255
 256                 if (new == old)
 257                         continue;
 258
 259                 /* Interrupt register 12 doesn't exist prior to version 2.0 */
 260                 if (ab8500_irq_regoffset[i] == 11 &&
 261                         ab8500->chip_id < AB8500_CUT2P0)
 262                         continue;
 263
 264                 ab8500->oldmask[i] = new;
 265
 266                 reg = AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i];
 267                 set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
 268         }
 269
 270         mutex_unlock(&ab8500->irq_lock);
 271 }
 272
 273 static void ab8500_irq_mask(struct irq_data *data)
 274 {
 275         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 276         int offset = data->irq - ab8500->irq_base;
 277         int index = offset / 8;
 278         int mask = 1 << (offset % 8);
 279
 280         ab8500->mask[index] |= mask;
 281 }
 282
 283 static void ab8500_irq_unmask(struct irq_data *data)
 284 {
 285         struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 286         int offset = data->irq - ab8500->irq_base;
 287         int index = offset / 8;
 288         int mask = 1 << (offset % 8);
 289
 290         ab8500->mask[index] &= ~mask;
 291 }
 292
 293 static struct irq_chip ab8500_irq_chip = {
 294         .name                   = "ab8500",
 295         .irq_bus_lock           = ab8500_irq_lock,
 296         .irq_bus_sync_unlock    = ab8500_irq_sync_unlock,
 297         .irq_mask               = ab8500_irq_mask,
 298         .irq_disable            = ab8500_irq_mask,
 299         .irq_unmask             = ab8500_irq_unmask,
 300 };
 301
 302 static irqreturn_t ab8500_irq(int irq, void *dev)
 303 {
 304         struct ab8500 *ab8500 = dev;
 305         int i;
 306
 307         dev_vdbg(ab8500->dev, "interrupt\n");
 308
 309         for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
 310                 int regoffset = ab8500_irq_regoffset[i];
 311                 int status;
 312                 u8 value;
 313
 314                 /* Interrupt register 12 doesn't exist prior to version 2.0 */
 315                 if (regoffset == 11 && ab8500->chip_id < AB8500_CUT2P0)
 316                         continue;
 317
 318                 status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
 319                         AB8500_IT_LATCH1_REG + regoffset, &value);
 320                 if (status < 0 || value == 0)
 321                         continue;
 322
 323                 do {
 324                         int bit = __ffs(value);
 325                         int line = i * 8 + bit;
 326
 327                         handle_nested_irq(ab8500->irq_base + line);
 328                         value &= ~(1 << bit);
 329                 } while (value);
 330         }
 331
 332         return IRQ_HANDLED;
 333 }
 334
 335 static int ab8500_irq_init(struct ab8500 *ab8500)
 336 {
 337         int base = ab8500->irq_base;
 338         int irq;
 339
 340         for (irq = base; irq < base + AB8500_NR_IRQS; irq++) {
 341                 irq_set_chip_data(irq, ab8500);
 342                 irq_set_chip_and_handler(irq, &ab8500_irq_chip,
 343                                          handle_simple_irq);
 344                 irq_set_nested_thread(irq, 1);
 345 #ifdef CONFIG_ARM
 346                 set_irq_flags(irq, IRQF_VALID);
 347 #else
 348                 irq_set_noprobe(irq);
 349 #endif
 350         }
 351
 352         return 0;
 353 }
 354
 355 static void ab8500_irq_remove(struct ab8500 *ab8500)
 356 {
 357         int base = ab8500->irq_base;
 358         int irq;
 359
 360         for (irq = base; irq < base + AB8500_NR_IRQS; irq++) {
 361 #ifdef CONFIG_ARM
 362                 set_irq_flags(irq, 0);
 363 #endif
 364                 irq_set_chip_and_handler(irq, NULL, NULL);
 365                 irq_set_chip_data(irq, NULL);
 366         }
 367 }
 368
 369 static struct resource __devinitdata ab8500_gpio_resources[] = {
 370         {
 371                 .name   = "GPIO_INT6",
 372                 .start  = AB8500_INT_GPIO6R,
 373                 .end    = AB8500_INT_GPIO41F,
 374                 .flags  = IORESOURCE_IRQ,
 375         }
 376 };
 377
 378 static struct resource __devinitdata ab8500_gpadc_resources[] = {
 379         {
 380                 .name   = "HW_CONV_END",
 381                 .start  = AB8500_INT_GP_HW_ADC_CONV_END,
 382                 .end    = AB8500_INT_GP_HW_ADC_CONV_END,
 383                 .flags  = IORESOURCE_IRQ,
 384         },
 385         {
 386                 .name   = "SW_CONV_END",
 387                 .start  = AB8500_INT_GP_SW_ADC_CONV_END,
 388                 .end    = AB8500_INT_GP_SW_ADC_CONV_END,
 389                 .flags  = IORESOURCE_IRQ,
 390         },
 391 };
 392
 393 static struct resource __devinitdata ab8500_rtc_resources[] = {
 394         {
 395                 .name   = "60S",
 396                 .start  = AB8500_INT_RTC_60S,
 397                 .end    = AB8500_INT_RTC_60S,
 398                 .flags  = IORESOURCE_IRQ,
 399         },
 400         {
 401                 .name   = "ALARM",
 402                 .start  = AB8500_INT_RTC_ALARM,
 403                 .end    = AB8500_INT_RTC_ALARM,
 404                 .flags  = IORESOURCE_IRQ,
 405         },
 406 };
 407
 408 static struct resource __devinitdata ab8500_poweronkey_db_resources[] = {
 409         {
 410                 .name   = "ONKEY_DBF",
 411                 .start  = AB8500_INT_PON_KEY1DB_F,
 412                 .end    = AB8500_INT_PON_KEY1DB_F,
 413                 .flags  = IORESOURCE_IRQ,
 414         },
 415         {
 416                 .name   = "ONKEY_DBR",
 417                 .start  = AB8500_INT_PON_KEY1DB_R,
 418                 .end    = AB8500_INT_PON_KEY1DB_R,
 419                 .flags  = IORESOURCE_IRQ,
 420         },
 421 };
 422
 423 static struct resource __devinitdata ab8500_av_acc_detect_resources[] = {
 424         {
 425                .name = "ACC_DETECT_1DB_F",
 426                .start = AB8500_INT_ACC_DETECT_1DB_F,
 427                .end = AB8500_INT_ACC_DETECT_1DB_F,
 428                .flags = IORESOURCE_IRQ,
 429         },
 430         {
 431                .name = "ACC_DETECT_1DB_R",
 432                .start = AB8500_INT_ACC_DETECT_1DB_R,
 433                .end = AB8500_INT_ACC_DETECT_1DB_R,
 434                .flags = IORESOURCE_IRQ,
 435         },
 436         {
 437                .name = "ACC_DETECT_21DB_F",
 438                .start = AB8500_INT_ACC_DETECT_21DB_F,
 439                .end = AB8500_INT_ACC_DETECT_21DB_F,
 440                .flags = IORESOURCE_IRQ,
 441         },
 442         {
 443                .name = "ACC_DETECT_21DB_R",
 444                .start = AB8500_INT_ACC_DETECT_21DB_R,
 445                .end = AB8500_INT_ACC_DETECT_21DB_R,
 446                .flags = IORESOURCE_IRQ,
 447         },
 448         {
 449                .name = "ACC_DETECT_22DB_F",
 450                .start = AB8500_INT_ACC_DETECT_22DB_F,
 451                .end = AB8500_INT_ACC_DETECT_22DB_F,
 452                .flags = IORESOURCE_IRQ,
 453         },
 454         {
 455                .name = "ACC_DETECT_22DB_R",
 456                .start = AB8500_INT_ACC_DETECT_22DB_R,
 457                .end = AB8500_INT_ACC_DETECT_22DB_R,
 458                .flags = IORESOURCE_IRQ,
 459         },
 460 };
 461
 462 static struct resource __devinitdata ab8500_charger_resources[] = {
 463         {
 464                 .name = "MAIN_CH_UNPLUG_DET",
 465                 .start = AB8500_INT_MAIN_CH_UNPLUG_DET,
 466                 .end = AB8500_INT_MAIN_CH_UNPLUG_DET,
 467                 .flags = IORESOURCE_IRQ,
 468         },
 469         {
 470                 .name = "MAIN_CHARGE_PLUG_DET",
 471                 .start = AB8500_INT_MAIN_CH_PLUG_DET,
 472                 .end = AB8500_INT_MAIN_CH_PLUG_DET,
 473                 .flags = IORESOURCE_IRQ,
 474         },
 475         {
 476                 .name = "VBUS_DET_R",
 477                 .start = AB8500_INT_VBUS_DET_R,
 478                 .end = AB8500_INT_VBUS_DET_R,
 479                 .flags = IORESOURCE_IRQ,
 480         },
 481         {
 482                 .name = "VBUS_DET_F",
 483                 .start = AB8500_INT_VBUS_DET_F,
 484                 .end = AB8500_INT_VBUS_DET_F,
 485                 .flags = IORESOURCE_IRQ,
 486         },
 487         {
 488                 .name = "USB_LINK_STATUS",
 489                 .start = AB8500_INT_USB_LINK_STATUS,
 490                 .end = AB8500_INT_USB_LINK_STATUS,
 491                 .flags = IORESOURCE_IRQ,
 492         },
 493         {
 494                 .name = "USB_CHARGE_DET_DONE",
 495                 .start = AB8500_INT_USB_CHG_DET_DONE,
 496                 .end = AB8500_INT_USB_CHG_DET_DONE,
 497                 .flags = IORESOURCE_IRQ,
 498         },
 499         {
 500                 .name = "VBUS_OVV",
 501                 .start = AB8500_INT_VBUS_OVV,
 502                 .end = AB8500_INT_VBUS_OVV,
 503                 .flags = IORESOURCE_IRQ,
 504         },
 505         {
 506                 .name = "USB_CH_TH_PROT_R",
 507                 .start = AB8500_INT_USB_CH_TH_PROT_R,
 508                 .end = AB8500_INT_USB_CH_TH_PROT_R,
 509                 .flags = IORESOURCE_IRQ,
 510         },
 511         {
 512                 .name = "USB_CH_TH_PROT_F",
 513                 .start = AB8500_INT_USB_CH_TH_PROT_F,
 514                 .end = AB8500_INT_USB_CH_TH_PROT_F,
 515                 .flags = IORESOURCE_IRQ,
 516         },
 517         {
 518                 .name = "MAIN_EXT_CH_NOT_OK",
 519                 .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 520                 .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 521                 .flags = IORESOURCE_IRQ,
 522         },
 523         {
 524                 .name = "MAIN_CH_TH_PROT_R",
 525                 .start = AB8500_INT_MAIN_CH_TH_PROT_R,
 526                 .end = AB8500_INT_MAIN_CH_TH_PROT_R,
 527                 .flags = IORESOURCE_IRQ,
 528         },
 529         {
 530                 .name = "MAIN_CH_TH_PROT_F",
 531                 .start = AB8500_INT_MAIN_CH_TH_PROT_F,
 532                 .end = AB8500_INT_MAIN_CH_TH_PROT_F,
 533                 .flags = IORESOURCE_IRQ,
 534         },
 535         {
 536                 .name = "USB_CHARGER_NOT_OKR",
 537                 .start = AB8500_INT_USB_CHARGER_NOT_OK,
 538                 .end = AB8500_INT_USB_CHARGER_NOT_OK,
 539                 .flags = IORESOURCE_IRQ,
 540         },
 541         {
 542                 .name = "USB_CHARGER_NOT_OKF",
 543                 .start = AB8500_INT_USB_CHARGER_NOT_OKF,
 544                 .end = AB8500_INT_USB_CHARGER_NOT_OKF,
 545                 .flags = IORESOURCE_IRQ,
 546         },
 547         {
 548                 .name = "CH_WD_EXP",
 549                 .start = AB8500_INT_CH_WD_EXP,
 550                 .end = AB8500_INT_CH_WD_EXP,
 551                 .flags = IORESOURCE_IRQ,
 552         },
 553 };
 554
 555 static struct resource __devinitdata ab8500_btemp_resources[] = {
 556         {
 557                 .name = "BAT_CTRL_INDB",
 558                 .start = AB8500_INT_BAT_CTRL_INDB,
 559                 .end = AB8500_INT_BAT_CTRL_INDB,
 560                 .flags = IORESOURCE_IRQ,
 561         },
 562         {
 563                 .name = "BTEMP_LOW",
 564                 .start = AB8500_INT_BTEMP_LOW,
 565                 .end = AB8500_INT_BTEMP_LOW,
 566                 .flags = IORESOURCE_IRQ,
 567         },
 568         {
 569                 .name = "BTEMP_HIGH",
 570                 .start = AB8500_INT_BTEMP_HIGH,
 571                 .end = AB8500_INT_BTEMP_HIGH,
 572                 .flags = IORESOURCE_IRQ,
 573         },
 574         {
 575                 .name = "BTEMP_LOW_MEDIUM",
 576                 .start = AB8500_INT_BTEMP_LOW_MEDIUM,
 577                 .end = AB8500_INT_BTEMP_LOW_MEDIUM,
 578                 .flags = IORESOURCE_IRQ,
 579         },
 580         {
 581                 .name = "BTEMP_MEDIUM_HIGH",
 582                 .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
 583                 .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
 584                 .flags = IORESOURCE_IRQ,
 585         },
 586 };
 587
 588 static struct resource __devinitdata ab8500_fg_resources[] = {
 589         {
 590                 .name = "NCONV_ACCU",
 591                 .start = AB8500_INT_CCN_CONV_ACC,
 592                 .end = AB8500_INT_CCN_CONV_ACC,
 593                 .flags = IORESOURCE_IRQ,
 594         },
 595         {
 596                 .name = "BATT_OVV",
 597                 .start = AB8500_INT_BATT_OVV,
 598                 .end = AB8500_INT_BATT_OVV,
 599                 .flags = IORESOURCE_IRQ,
 600         },
 601         {
 602                 .name = "LOW_BAT_F",
 603                 .start = AB8500_INT_LOW_BAT_F,
 604                 .end = AB8500_INT_LOW_BAT_F,
 605                 .flags = IORESOURCE_IRQ,
 606         },
 607         {
 608                 .name = "LOW_BAT_R",
 609                 .start = AB8500_INT_LOW_BAT_R,
 610                 .end = AB8500_INT_LOW_BAT_R,
 611                 .flags = IORESOURCE_IRQ,
 612         },
 613         {
 614                 .name = "CC_INT_CALIB",
 615                 .start = AB8500_INT_CC_INT_CALIB,
 616                 .end = AB8500_INT_CC_INT_CALIB,
 617                 .flags = IORESOURCE_IRQ,
 618         },
 619 };
 620
 621 static struct resource __devinitdata ab8500_chargalg_resources[] = {};
 622
 623 #ifdef CONFIG_DEBUG_FS
 624 static struct resource __devinitdata ab8500_debug_resources[] = {
 625         {
 626                 .name   = "IRQ_FIRST",
 627                 .start  = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 628                 .end    = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 629                 .flags  = IORESOURCE_IRQ,
 630         },
 631         {
 632                 .name   = "IRQ_LAST",
 633                 .start  = AB8500_INT_USB_CHARGER_NOT_OKF,
 634                 .end    = AB8500_INT_USB_CHARGER_NOT_OKF,
 635                 .flags  = IORESOURCE_IRQ,
 636         },
 637 };
 638 #endif
 639
 640 static struct resource __devinitdata ab8500_usb_resources[] = {
 641         {
 642                 .name = "ID_WAKEUP_R",
 643                 .start = AB8500_INT_ID_WAKEUP_R,
 644                 .end = AB8500_INT_ID_WAKEUP_R,
 645                 .flags = IORESOURCE_IRQ,
 646         },
 647         {
 648                 .name = "ID_WAKEUP_F",
 649                 .start = AB8500_INT_ID_WAKEUP_F,
 650                 .end = AB8500_INT_ID_WAKEUP_F,
 651                 .flags = IORESOURCE_IRQ,
 652         },
 653         {
 654                 .name = "VBUS_DET_F",
 655                 .start = AB8500_INT_VBUS_DET_F,
 656                 .end = AB8500_INT_VBUS_DET_F,
 657                 .flags = IORESOURCE_IRQ,
 658         },
 659         {
 660                 .name = "VBUS_DET_R",
 661                 .start = AB8500_INT_VBUS_DET_R,
 662                 .end = AB8500_INT_VBUS_DET_R,
 663                 .flags = IORESOURCE_IRQ,
 664         },
 665         {
 666                 .name = "USB_LINK_STATUS",
 667                 .start = AB8500_INT_USB_LINK_STATUS,
 668                 .end = AB8500_INT_USB_LINK_STATUS,
 669                 .flags = IORESOURCE_IRQ,
 670         },
 671         {
 672                 .name = "USB_ADP_PROBE_PLUG",
 673                 .start = AB8500_INT_ADP_PROBE_PLUG,
 674                 .end = AB8500_INT_ADP_PROBE_PLUG,
 675                 .flags = IORESOURCE_IRQ,
 676         },
 677         {
 678                 .name = "USB_ADP_PROBE_UNPLUG",
 679                 .start = AB8500_INT_ADP_PROBE_UNPLUG,
 680                 .end = AB8500_INT_ADP_PROBE_UNPLUG,
 681                 .flags = IORESOURCE_IRQ,
 682         },
 683 };
 684
 685 static struct resource __devinitdata ab8500_temp_resources[] = {
 686         {
 687                 .name  = "AB8500_TEMP_WARM",
 688                 .start = AB8500_INT_TEMP_WARM,
 689                 .end   = AB8500_INT_TEMP_WARM,
 690                 .flags = IORESOURCE_IRQ,
 691         },
 692 };
 693
 694 static struct mfd_cell __devinitdata ab8500_devs[] = {
 695 #ifdef CONFIG_DEBUG_FS
 696         {
 697                 .name = "ab8500-debug",
 698                 .num_resources = ARRAY_SIZE(ab8500_debug_resources),
 699                 .resources = ab8500_debug_resources,
 700         },
 701 #endif
 702         {
 703                 .name = "ab8500-sysctrl",
 704         },
 705         {
 706                 .name = "ab8500-regulator",
 707         },
 708         {
 709                 .name = "ab8500-gpio",
 710                 .num_resources = ARRAY_SIZE(ab8500_gpio_resources),
 711                 .resources = ab8500_gpio_resources,
 712         },
 713         {
 714                 .name = "ab8500-gpadc",
 715                 .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
 716                 .resources = ab8500_gpadc_resources,
 717         },
 718         {
 719                 .name = "ab8500-rtc",
 720                 .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
 721                 .resources = ab8500_rtc_resources,
 722         },
 723         {
 724                 .name = "ab8500-charger",
 725                 .num_resources = ARRAY_SIZE(ab8500_charger_resources),
 726                 .resources = ab8500_charger_resources,
 727         },
 728         {
 729                 .name = "ab8500-btemp",
 730                 .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
 731                 .resources = ab8500_btemp_resources,
 732         },
 733         {
 734                 .name = "ab8500-fg",
 735                 .num_resources = ARRAY_SIZE(ab8500_fg_resources),
 736                 .resources = ab8500_fg_resources,
 737         },
 738         {
 739                 .name = "ab8500-chargalg",
 740                 .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
 741                 .resources = ab8500_chargalg_resources,
 742         },
 743         {
 744                 .name = "ab8500-acc-det",
 745                 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
 746                 .resources = ab8500_av_acc_detect_resources,
 747         },
 748         {
 749                 .name = "ab8500-codec",
 750         },
 751         {
 752                 .name = "ab8500-usb",
 753                 .num_resources = ARRAY_SIZE(ab8500_usb_resources),
 754                 .resources = ab8500_usb_resources,
 755         },
 756         {
 757                 .name = "ab8500-poweron-key",
 758                 .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
 759                 .resources = ab8500_poweronkey_db_resources,
 760         },
 761         {
 762                 .name = "ab8500-pwm",
 763                 .id = 1,
 764         },
 765         {
 766                 .name = "ab8500-pwm",
 767                 .id = 2,
 768         },
 769         {
 770                 .name = "ab8500-pwm",
 771                 .id = 3,
 772         },
 773         { .name = "ab8500-leds", },
 774         {
 775                 .name = "ab8500-denc",
 776         },
 777         {
 778                 .name = "ab8500-temp",
 779                 .num_resources = ARRAY_SIZE(ab8500_temp_resources),
 780                 .resources = ab8500_temp_resources,
 781         },
 782 };
 783
 784 static ssize_t show_chip_id(struct device *dev,
 785                                 struct device_attribute *attr, char *buf)
 786 {
 787         struct ab8500 *ab8500;
 788
 789         ab8500 = dev_get_drvdata(dev);
 790         return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
 791 }
 792
 793 /*
 794  * ab8500 has switched off due to (SWITCH_OFF_STATUS):
 795  * 0x01 Swoff bit programming
 796  * 0x02 Thermal protection activation
 797  * 0x04 Vbat lower then BattOk falling threshold
 798  * 0x08 Watchdog expired
 799  * 0x10 Non presence of 32kHz clock
 800  * 0x20 Battery level lower than power on reset threshold
 801  * 0x40 Power on key 1 pressed longer than 10 seconds
 802  * 0x80 DB8500 thermal shutdown
 803  */
 804 static ssize_t show_switch_off_status(struct device *dev,
 805                                 struct device_attribute *attr, char *buf)
 806 {
 807         int ret;
 808         u8 value;
 809         struct ab8500 *ab8500;
 810
 811         ab8500 = dev_get_drvdata(dev);
 812         ret = get_register_interruptible(ab8500, AB8500_RTC,
 813                 AB8500_SWITCH_OFF_STATUS, &value);
 814         if (ret < 0)
 815                 return ret;
 816         return sprintf(buf, "%#x\n", value);
 817 }
 818
 819 /*
 820  * ab8500 has turned on due to (TURN_ON_STATUS):
 821  * 0x01 PORnVbat
 822  * 0x02 PonKey1dbF
 823  * 0x04 PonKey2dbF
 824  * 0x08 RTCAlarm
 825  * 0x10 MainChDet
 826  * 0x20 VbusDet
 827  * 0x40 UsbIDDetect
 828  * 0x80 Reserved
 829  */
 830 static ssize_t show_turn_on_status(struct device *dev,
 831                                 struct device_attribute *attr, char *buf)
 832 {
 833         int ret;
 834         u8 value;
 835         struct ab8500 *ab8500;
 836
 837         ab8500 = dev_get_drvdata(dev);
 838         ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
 839                 AB8500_TURN_ON_STATUS, &value);
 840         if (ret < 0)
 841                 return ret;
 842         return sprintf(buf, "%#x\n", value);
 843 }
 844
 845 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
 846 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
 847 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
 848
 849 static struct attribute *ab8500_sysfs_entries[] = {
 850         &dev_attr_chip_id.attr,
 851         &dev_attr_switch_off_status.attr,
 852         &dev_attr_turn_on_status.attr,
 853         NULL,
 854 };
 855
 856 static struct attribute_group ab8500_attr_group = {
 857         .attrs  = ab8500_sysfs_entries,
 858 };
 859
 860 int __devinit ab8500_init(struct ab8500 *ab8500)
 861 {
 862         struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev);
 863         int ret;
 864         int i;
 865         u8 value;
 866
 867         if (plat)
 868                 ab8500->irq_base = plat->irq_base;
 869
 870         mutex_init(&ab8500->lock);
 871         mutex_init(&ab8500->irq_lock);
 872
 873         ret = get_register_interruptible(ab8500, AB8500_MISC,
 874                 AB8500_REV_REG, &value);
 875         if (ret < 0)
 876                 return ret;
 877
 878         switch (value) {
 879         case AB8500_CUT1P0:
 880         case AB8500_CUT1P1:
 881         case AB8500_CUT2P0:
 882         case AB8500_CUT3P0:
 883         case AB8500_CUT3P3:
 884                 dev_info(ab8500->dev, "detected chip, revision: %#x\n", value);
 885                 break;
 886         default:
 887                 dev_err(ab8500->dev, "unknown chip, revision: %#x\n", value);
 888                 return -EINVAL;
 889         }
 890         ab8500->chip_id = value;
 891
 892         /*
 893          * ab8500 has switched off due to (SWITCH_OFF_STATUS):
 894          * 0x01 Swoff bit programming
 895          * 0x02 Thermal protection activation
 896          * 0x04 Vbat lower then BattOk falling threshold
 897          * 0x08 Watchdog expired
 898          * 0x10 Non presence of 32kHz clock
 899          * 0x20 Battery level lower than power on reset threshold
 900          * 0x40 Power on key 1 pressed longer than 10 seconds
 901          * 0x80 DB8500 thermal shutdown
 902          */
 903
 904         ret = get_register_interruptible(ab8500, AB8500_RTC,
 905                 AB8500_SWITCH_OFF_STATUS, &value);
 906         if (ret < 0)
 907                 return ret;
 908         dev_info(ab8500->dev, "switch off status: %#x", value);
 909
 910         if (plat && plat->init)
 911                 plat->init(ab8500);
 912
 913         /* Clear and mask all interrupts */
 914         for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
 915                 /* Interrupt register 12 doesn't exist prior to version 2.0 */
 916                 if (ab8500_irq_regoffset[i] == 11 &&
 917                         ab8500->chip_id < AB8500_CUT2P0)
 918                         continue;
 919
 920                 get_register_interruptible(ab8500, AB8500_INTERRUPT,
 921                         AB8500_IT_LATCH1_REG + ab8500_irq_regoffset[i],
 922                         &value);
 923                 set_register_interruptible(ab8500, AB8500_INTERRUPT,
 924                         AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i], 0xff);
 925         }
 926
 927         ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
 928         if (ret)
 929                 return ret;
 930
 931         for (i = 0; i < AB8500_NUM_IRQ_REGS; i++)
 932                 ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
 933
 934         if (ab8500->irq_base) {
 935                 ret = ab8500_irq_init(ab8500);
 936                 if (ret)
 937                         return ret;
 938
 939                 ret = request_threaded_irq(ab8500->irq, NULL, ab8500_irq,
 940                                            IRQF_ONESHOT | IRQF_NO_SUSPEND,
 941                                            "ab8500", ab8500);
 942                 if (ret)
 943                         goto out_removeirq;
 944         }
 945
 946         ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
 947                               ARRAY_SIZE(ab8500_devs), NULL,
 948                               ab8500->irq_base);
 949         if (ret)
 950                 goto out_freeirq;
 951
 952         ret = sysfs_create_group(&ab8500->dev->kobj, &ab8500_attr_group);
 953         if (ret)
 954                 dev_err(ab8500->dev, "error creating sysfs entries\n");
 955
 956         return ret;
 957
 958 out_freeirq:
 959         if (ab8500->irq_base) {
 960                 free_irq(ab8500->irq, ab8500);
 961 out_removeirq:
 962                 ab8500_irq_remove(ab8500);
 963         }
 964         return ret;
 965 }
 966
 967 int __devexit ab8500_exit(struct ab8500 *ab8500)
 968 {
 969         sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
 970         mfd_remove_devices(ab8500->dev);
 971         if (ab8500->irq_base) {
 972                 free_irq(ab8500->irq, ab8500);
 973                 ab8500_irq_remove(ab8500);
 974         }
 975
 976         return 0;
 977 }
 978
 979 MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
 980 MODULE_DESCRIPTION("AB8500 MFD core");
 981 MODULE_LICENSE("GPL v2");