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