linux/drivers/mfd/ab8500-core.c
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   1/*
   2 * Copyright (C) ST-Ericsson SA 2010
   3 *
   4 * License Terms: GNU General Public License v2
   5 * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
   6 * Author: Rabin Vincent <rabin.vincent@stericsson.com>
   7 * Author: Mattias Wallin <mattias.wallin@stericsson.com>
   8 */
   9
  10#include <linux/kernel.h>
  11#include <linux/slab.h>
  12#include <linux/init.h>
  13#include <linux/irq.h>
  14#include <linux/irqdomain.h>
  15#include <linux/delay.h>
  16#include <linux/interrupt.h>
  17#include <linux/module.h>
  18#include <linux/platform_device.h>
  19#include <linux/mfd/core.h>
  20#include <linux/mfd/abx500.h>
  21#include <linux/mfd/abx500/ab8500.h>
  22#include <linux/mfd/abx500/ab8500-bm.h>
  23#include <linux/mfd/dbx500-prcmu.h>
  24#include <linux/regulator/ab8500.h>
  25#include <linux/of.h>
  26#include <linux/of_device.h>
  27
  28/*
  29 * Interrupt register offsets
  30 * Bank : 0x0E
  31 */
  32#define AB8500_IT_SOURCE1_REG           0x00
  33#define AB8500_IT_SOURCE2_REG           0x01
  34#define AB8500_IT_SOURCE3_REG           0x02
  35#define AB8500_IT_SOURCE4_REG           0x03
  36#define AB8500_IT_SOURCE5_REG           0x04
  37#define AB8500_IT_SOURCE6_REG           0x05
  38#define AB8500_IT_SOURCE7_REG           0x06
  39#define AB8500_IT_SOURCE8_REG           0x07
  40#define AB9540_IT_SOURCE13_REG          0x0C
  41#define AB8500_IT_SOURCE19_REG          0x12
  42#define AB8500_IT_SOURCE20_REG          0x13
  43#define AB8500_IT_SOURCE21_REG          0x14
  44#define AB8500_IT_SOURCE22_REG          0x15
  45#define AB8500_IT_SOURCE23_REG          0x16
  46#define AB8500_IT_SOURCE24_REG          0x17
  47
  48/*
  49 * latch registers
  50 */
  51#define AB8500_IT_LATCH1_REG            0x20
  52#define AB8500_IT_LATCH2_REG            0x21
  53#define AB8500_IT_LATCH3_REG            0x22
  54#define AB8500_IT_LATCH4_REG            0x23
  55#define AB8500_IT_LATCH5_REG            0x24
  56#define AB8500_IT_LATCH6_REG            0x25
  57#define AB8500_IT_LATCH7_REG            0x26
  58#define AB8500_IT_LATCH8_REG            0x27
  59#define AB8500_IT_LATCH9_REG            0x28
  60#define AB8500_IT_LATCH10_REG           0x29
  61#define AB8500_IT_LATCH12_REG           0x2B
  62#define AB9540_IT_LATCH13_REG           0x2C
  63#define AB8500_IT_LATCH19_REG           0x32
  64#define AB8500_IT_LATCH20_REG           0x33
  65#define AB8500_IT_LATCH21_REG           0x34
  66#define AB8500_IT_LATCH22_REG           0x35
  67#define AB8500_IT_LATCH23_REG           0x36
  68#define AB8500_IT_LATCH24_REG           0x37
  69
  70/*
  71 * mask registers
  72 */
  73
  74#define AB8500_IT_MASK1_REG             0x40
  75#define AB8500_IT_MASK2_REG             0x41
  76#define AB8500_IT_MASK3_REG             0x42
  77#define AB8500_IT_MASK4_REG             0x43
  78#define AB8500_IT_MASK5_REG             0x44
  79#define AB8500_IT_MASK6_REG             0x45
  80#define AB8500_IT_MASK7_REG             0x46
  81#define AB8500_IT_MASK8_REG             0x47
  82#define AB8500_IT_MASK9_REG             0x48
  83#define AB8500_IT_MASK10_REG            0x49
  84#define AB8500_IT_MASK11_REG            0x4A
  85#define AB8500_IT_MASK12_REG            0x4B
  86#define AB8500_IT_MASK13_REG            0x4C
  87#define AB8500_IT_MASK14_REG            0x4D
  88#define AB8500_IT_MASK15_REG            0x4E
  89#define AB8500_IT_MASK16_REG            0x4F
  90#define AB8500_IT_MASK17_REG            0x50
  91#define AB8500_IT_MASK18_REG            0x51
  92#define AB8500_IT_MASK19_REG            0x52
  93#define AB8500_IT_MASK20_REG            0x53
  94#define AB8500_IT_MASK21_REG            0x54
  95#define AB8500_IT_MASK22_REG            0x55
  96#define AB8500_IT_MASK23_REG            0x56
  97#define AB8500_IT_MASK24_REG            0x57
  98#define AB8500_IT_MASK25_REG            0x58
  99
 100/*
 101 * latch hierarchy registers
 102 */
 103#define AB8500_IT_LATCHHIER1_REG        0x60
 104#define AB8500_IT_LATCHHIER2_REG        0x61
 105#define AB8500_IT_LATCHHIER3_REG        0x62
 106#define AB8540_IT_LATCHHIER4_REG        0x63
 107
 108#define AB8500_IT_LATCHHIER_NUM         3
 109#define AB8540_IT_LATCHHIER_NUM         4
 110
 111#define AB8500_REV_REG                  0x80
 112#define AB8500_IC_NAME_REG              0x82
 113#define AB8500_SWITCH_OFF_STATUS        0x00
 114
 115#define AB8500_TURN_ON_STATUS           0x00
 116#define AB8505_TURN_ON_STATUS_2 0x04
 117
 118#define AB8500_CH_USBCH_STAT1_REG       0x02
 119#define VBUS_DET_DBNC100                0x02
 120#define VBUS_DET_DBNC1                  0x01
 121
 122static DEFINE_SPINLOCK(on_stat_lock);
 123static u8 turn_on_stat_mask = 0xFF;
 124static u8 turn_on_stat_set;
 125static bool no_bm; /* No battery management */
 126module_param(no_bm, bool, S_IRUGO);
 127
 128#define AB9540_MODEM_CTRL2_REG                  0x23
 129#define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT        BIT(2)
 130
 131/*
 132 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
 133 * numbers are indexed into this array with (num / 8). The interupts are
 134 * defined in linux/mfd/ab8500.h
 135 *
 136 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
 137 * offset 0.
 138 */
 139/* AB8500 support */
 140static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
 141        0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
 142};
 143
 144/* AB9540 / AB8505 support */
 145static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
 146        0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22, 23
 147};
 148
 149/* AB8540 support */
 150static const int ab8540_irq_regoffset[AB8540_NUM_IRQ_REGS] = {
 151        0, 1, 2, 3, 4, -1, -1, -1, -1, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22, 23,
 152        25, 26, 27, 28, 29, 30, 31,
 153};
 154
 155static const char ab8500_version_str[][7] = {
 156        [AB8500_VERSION_AB8500] = "AB8500",
 157        [AB8500_VERSION_AB8505] = "AB8505",
 158        [AB8500_VERSION_AB9540] = "AB9540",
 159        [AB8500_VERSION_AB8540] = "AB8540",
 160};
 161
 162static int ab8500_prcmu_write(struct ab8500 *ab8500, u16 addr, u8 data)
 163{
 164        int ret;
 165
 166        ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
 167        if (ret < 0)
 168                dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
 169        return ret;
 170}
 171
 172static int ab8500_prcmu_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask,
 173        u8 data)
 174{
 175        int ret;
 176
 177        ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data,
 178                &mask, 1);
 179        if (ret < 0)
 180                dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
 181        return ret;
 182}
 183
 184static int ab8500_prcmu_read(struct ab8500 *ab8500, u16 addr)
 185{
 186        int ret;
 187        u8 data;
 188
 189        ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
 190        if (ret < 0) {
 191                dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
 192                return ret;
 193        }
 194        return (int)data;
 195}
 196
 197static int ab8500_get_chip_id(struct device *dev)
 198{
 199        struct ab8500 *ab8500;
 200
 201        if (!dev)
 202                return -EINVAL;
 203        ab8500 = dev_get_drvdata(dev->parent);
 204        return ab8500 ? (int)ab8500->chip_id : -EINVAL;
 205}
 206
 207static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
 208        u8 reg, u8 data)
 209{
 210        int ret;
 211        /*
 212         * Put the u8 bank and u8 register together into a an u16.
 213         * The bank on higher 8 bits and register in lower 8 bits.
 214         * */
 215        u16 addr = ((u16)bank) << 8 | reg;
 216
 217        dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
 218
 219        mutex_lock(&ab8500->lock);
 220
 221        ret = ab8500->write(ab8500, addr, data);
 222        if (ret < 0)
 223                dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
 224                        addr, ret);
 225        mutex_unlock(&ab8500->lock);
 226
 227        return ret;
 228}
 229
 230static int ab8500_set_register(struct device *dev, u8 bank,
 231        u8 reg, u8 value)
 232{
 233        int ret;
 234        struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 235
 236        atomic_inc(&ab8500->transfer_ongoing);
 237        ret = set_register_interruptible(ab8500, bank, reg, value);
 238        atomic_dec(&ab8500->transfer_ongoing);
 239        return ret;
 240}
 241
 242static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
 243        u8 reg, u8 *value)
 244{
 245        int ret;
 246        /* put the u8 bank and u8 reg together into a an u16.
 247         * bank on higher 8 bits and reg in lower */
 248        u16 addr = ((u16)bank) << 8 | reg;
 249
 250        mutex_lock(&ab8500->lock);
 251
 252        ret = ab8500->read(ab8500, addr);
 253        if (ret < 0)
 254                dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
 255                        addr, ret);
 256        else
 257                *value = ret;
 258
 259        mutex_unlock(&ab8500->lock);
 260        dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
 261
 262        return ret;
 263}
 264
 265static int ab8500_get_register(struct device *dev, u8 bank,
 266        u8 reg, u8 *value)
 267{
 268        int ret;
 269        struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 270
 271        atomic_inc(&ab8500->transfer_ongoing);
 272        ret = get_register_interruptible(ab8500, bank, reg, value);
 273        atomic_dec(&ab8500->transfer_ongoing);
 274        return ret;
 275}
 276
 277static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
 278        u8 reg, u8 bitmask, u8 bitvalues)
 279{
 280        int ret;
 281        /* put the u8 bank and u8 reg together into a an u16.
 282         * bank on higher 8 bits and reg in lower */
 283        u16 addr = ((u16)bank) << 8 | reg;
 284
 285        mutex_lock(&ab8500->lock);
 286
 287        if (ab8500->write_masked == NULL) {
 288                u8 data;
 289
 290                ret = ab8500->read(ab8500, addr);
 291                if (ret < 0) {
 292                        dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
 293                                addr, ret);
 294                        goto out;
 295                }
 296
 297                data = (u8)ret;
 298                data = (~bitmask & data) | (bitmask & bitvalues);
 299
 300                ret = ab8500->write(ab8500, addr, data);
 301                if (ret < 0)
 302                        dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
 303                                addr, ret);
 304
 305                dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr,
 306                        data);
 307                goto out;
 308        }
 309        ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues);
 310        if (ret < 0)
 311                dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr,
 312                        ret);
 313out:
 314        mutex_unlock(&ab8500->lock);
 315        return ret;
 316}
 317
 318static int ab8500_mask_and_set_register(struct device *dev,
 319        u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
 320{
 321        int ret;
 322        struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
 323
 324        atomic_inc(&ab8500->transfer_ongoing);
 325        ret= mask_and_set_register_interruptible(ab8500, bank, reg,
 326                                                 bitmask, bitvalues);
 327        atomic_dec(&ab8500->transfer_ongoing);
 328        return ret;
 329}
 330
 331static struct abx500_ops ab8500_ops = {
 332        .get_chip_id = ab8500_get_chip_id,
 333        .get_register = ab8500_get_register,
 334        .set_register = ab8500_set_register,
 335        .get_register_page = NULL,
 336        .set_register_page = NULL,
 337        .mask_and_set_register = ab8500_mask_and_set_register,
 338        .event_registers_startup_state_get = NULL,
 339        .startup_irq_enabled = NULL,
 340        .dump_all_banks = ab8500_dump_all_banks,
 341};
 342
 343static void ab8500_irq_lock(struct irq_data *data)
 344{
 345        struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 346
 347        mutex_lock(&ab8500->irq_lock);
 348        atomic_inc(&ab8500->transfer_ongoing);
 349}
 350
 351static void ab8500_irq_sync_unlock(struct irq_data *data)
 352{
 353        struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 354        int i;
 355
 356        for (i = 0; i < ab8500->mask_size; i++) {
 357                u8 old = ab8500->oldmask[i];
 358                u8 new = ab8500->mask[i];
 359                int reg;
 360
 361                if (new == old)
 362                        continue;
 363
 364                /*
 365                 * Interrupt register 12 doesn't exist prior to AB8500 version
 366                 * 2.0
 367                 */
 368                if (ab8500->irq_reg_offset[i] == 11 &&
 369                        is_ab8500_1p1_or_earlier(ab8500))
 370                        continue;
 371
 372                if (ab8500->irq_reg_offset[i] < 0)
 373                        continue;
 374
 375                ab8500->oldmask[i] = new;
 376
 377                reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
 378                set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
 379        }
 380        atomic_dec(&ab8500->transfer_ongoing);
 381        mutex_unlock(&ab8500->irq_lock);
 382}
 383
 384static void ab8500_irq_mask(struct irq_data *data)
 385{
 386        struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 387        int offset = data->hwirq;
 388        int index = offset / 8;
 389        int mask = 1 << (offset % 8);
 390
 391        ab8500->mask[index] |= mask;
 392
 393        /* The AB8500 GPIOs have two interrupts each (rising & falling). */
 394        if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R)
 395                ab8500->mask[index + 2] |= mask;
 396        if (offset >= AB9540_INT_GPIO50R && offset <= AB9540_INT_GPIO54R)
 397                ab8500->mask[index + 1] |= mask;
 398        if (offset == AB8540_INT_GPIO43R || offset == AB8540_INT_GPIO44R)
 399                /* Here the falling IRQ is one bit lower */
 400                ab8500->mask[index] |= (mask << 1);
 401}
 402
 403static void ab8500_irq_unmask(struct irq_data *data)
 404{
 405        struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
 406        unsigned int type = irqd_get_trigger_type(data);
 407        int offset = data->hwirq;
 408        int index = offset / 8;
 409        int mask = 1 << (offset % 8);
 410
 411        if (type & IRQ_TYPE_EDGE_RISING)
 412                ab8500->mask[index] &= ~mask;
 413
 414        /* The AB8500 GPIOs have two interrupts each (rising & falling). */
 415        if (type & IRQ_TYPE_EDGE_FALLING) {
 416                if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R)
 417                        ab8500->mask[index + 2] &= ~mask;
 418                else if (offset >= AB9540_INT_GPIO50R && offset <= AB9540_INT_GPIO54R)
 419                        ab8500->mask[index + 1] &= ~mask;
 420                else if (offset == AB8540_INT_GPIO43R || offset == AB8540_INT_GPIO44R)
 421                        /* Here the falling IRQ is one bit lower */
 422                        ab8500->mask[index] &= ~(mask << 1);
 423                else
 424                        ab8500->mask[index] &= ~mask;
 425        } else {
 426                /* Satisfies the case where type is not set. */
 427                ab8500->mask[index] &= ~mask;
 428        }
 429}
 430
 431static int ab8500_irq_set_type(struct irq_data *data, unsigned int type)
 432{
 433        return 0;
 434}
 435
 436static struct irq_chip ab8500_irq_chip = {
 437        .name                   = "ab8500",
 438        .irq_bus_lock           = ab8500_irq_lock,
 439        .irq_bus_sync_unlock    = ab8500_irq_sync_unlock,
 440        .irq_mask               = ab8500_irq_mask,
 441        .irq_disable            = ab8500_irq_mask,
 442        .irq_unmask             = ab8500_irq_unmask,
 443        .irq_set_type           = ab8500_irq_set_type,
 444};
 445
 446static void update_latch_offset(u8 *offset, int i)
 447{
 448        /* Fix inconsistent ITFromLatch25 bit mapping... */
 449        if (unlikely(*offset == 17))
 450                        *offset = 24;
 451        /* Fix inconsistent ab8540 bit mapping... */
 452        if (unlikely(*offset == 16))
 453                        *offset = 25;
 454        if ((i==3) && (*offset >= 24))
 455                        *offset += 2;
 456}
 457
 458static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500,
 459                                        int latch_offset, u8 latch_val)
 460{
 461        int int_bit, line, i;
 462
 463        for (i = 0; i < ab8500->mask_size; i++)
 464                if (ab8500->irq_reg_offset[i] == latch_offset)
 465                        break;
 466
 467        if (i >= ab8500->mask_size) {
 468                dev_err(ab8500->dev, "Register offset 0x%2x not declared\n",
 469                                latch_offset);
 470                return -ENXIO;
 471        }
 472
 473        /* ignore masked out interrupts */
 474        latch_val &= ~ab8500->mask[i];
 475
 476        while (latch_val) {
 477                int_bit = __ffs(latch_val);
 478                line = (i << 3) + int_bit;
 479                latch_val &= ~(1 << int_bit);
 480
 481                /*
 482                 * This handles the falling edge hwirqs from the GPIO
 483                 * lines. Route them back to the line registered for the
 484                 * rising IRQ, as this is merely a flag for the same IRQ
 485                 * in linux terms.
 486                 */
 487                if (line >= AB8500_INT_GPIO6F && line <= AB8500_INT_GPIO41F)
 488                        line -= 16;
 489                if (line >= AB9540_INT_GPIO50F && line <= AB9540_INT_GPIO54F)
 490                        line -= 8;
 491                if (line == AB8540_INT_GPIO43F || line == AB8540_INT_GPIO44F)
 492                        line += 1;
 493
 494                handle_nested_irq(ab8500->irq_base + line);
 495        }
 496
 497        return 0;
 498}
 499
 500static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500,
 501                                        int hier_offset, u8 hier_val)
 502{
 503        int latch_bit, status;
 504        u8 latch_offset, latch_val;
 505
 506        do {
 507                latch_bit = __ffs(hier_val);
 508                latch_offset = (hier_offset << 3) + latch_bit;
 509
 510                update_latch_offset(&latch_offset, hier_offset);
 511
 512                status = get_register_interruptible(ab8500,
 513                                AB8500_INTERRUPT,
 514                                AB8500_IT_LATCH1_REG + latch_offset,
 515                                &latch_val);
 516                if (status < 0 || latch_val == 0)
 517                        goto discard;
 518
 519                status = ab8500_handle_hierarchical_line(ab8500,
 520                                latch_offset, latch_val);
 521                if (status < 0)
 522                        return status;
 523discard:
 524                hier_val &= ~(1 << latch_bit);
 525        } while (hier_val);
 526
 527        return 0;
 528}
 529
 530static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev)
 531{
 532        struct ab8500 *ab8500 = dev;
 533        u8 i;
 534
 535        dev_vdbg(ab8500->dev, "interrupt\n");
 536
 537        /*  Hierarchical interrupt version */
 538        for (i = 0; i < (ab8500->it_latchhier_num); i++) {
 539                int status;
 540                u8 hier_val;
 541
 542                status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
 543                        AB8500_IT_LATCHHIER1_REG + i, &hier_val);
 544                if (status < 0 || hier_val == 0)
 545                        continue;
 546
 547                status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val);
 548                if (status < 0)
 549                        break;
 550        }
 551        return IRQ_HANDLED;
 552}
 553
 554static int ab8500_irq_map(struct irq_domain *d, unsigned int virq,
 555                                irq_hw_number_t hwirq)
 556{
 557        struct ab8500 *ab8500 = d->host_data;
 558
 559        if (!ab8500)
 560                return -EINVAL;
 561
 562        irq_set_chip_data(virq, ab8500);
 563        irq_set_chip_and_handler(virq, &ab8500_irq_chip,
 564                                handle_simple_irq);
 565        irq_set_nested_thread(virq, 1);
 566#ifdef CONFIG_ARM
 567        set_irq_flags(virq, IRQF_VALID);
 568#else
 569        irq_set_noprobe(virq);
 570#endif
 571
 572        return 0;
 573}
 574
 575static struct irq_domain_ops ab8500_irq_ops = {
 576        .map    = ab8500_irq_map,
 577        .xlate  = irq_domain_xlate_twocell,
 578};
 579
 580static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np)
 581{
 582        int num_irqs;
 583
 584        if (is_ab8540(ab8500))
 585                num_irqs = AB8540_NR_IRQS;
 586        else if (is_ab9540(ab8500))
 587                num_irqs = AB9540_NR_IRQS;
 588        else if (is_ab8505(ab8500))
 589                num_irqs = AB8505_NR_IRQS;
 590        else
 591                num_irqs = AB8500_NR_IRQS;
 592
 593        /* If ->irq_base is zero this will give a linear mapping */
 594        ab8500->domain = irq_domain_add_simple(NULL,
 595                        num_irqs, ab8500->irq_base,
 596                        &ab8500_irq_ops, ab8500);
 597
 598        if (!ab8500->domain) {
 599                dev_err(ab8500->dev, "Failed to create irqdomain\n");
 600                return -ENOSYS;
 601        }
 602
 603        return 0;
 604}
 605
 606int ab8500_suspend(struct ab8500 *ab8500)
 607{
 608        if (atomic_read(&ab8500->transfer_ongoing))
 609                return -EINVAL;
 610        else
 611                return 0;
 612}
 613
 614static struct resource ab8500_gpadc_resources[] = {
 615        {
 616                .name   = "HW_CONV_END",
 617                .start  = AB8500_INT_GP_HW_ADC_CONV_END,
 618                .end    = AB8500_INT_GP_HW_ADC_CONV_END,
 619                .flags  = IORESOURCE_IRQ,
 620        },
 621        {
 622                .name   = "SW_CONV_END",
 623                .start  = AB8500_INT_GP_SW_ADC_CONV_END,
 624                .end    = AB8500_INT_GP_SW_ADC_CONV_END,
 625                .flags  = IORESOURCE_IRQ,
 626        },
 627};
 628
 629static struct resource ab8505_gpadc_resources[] = {
 630        {
 631                .name   = "SW_CONV_END",
 632                .start  = AB8500_INT_GP_SW_ADC_CONV_END,
 633                .end    = AB8500_INT_GP_SW_ADC_CONV_END,
 634                .flags  = IORESOURCE_IRQ,
 635        },
 636};
 637
 638static struct resource ab8500_rtc_resources[] = {
 639        {
 640                .name   = "60S",
 641                .start  = AB8500_INT_RTC_60S,
 642                .end    = AB8500_INT_RTC_60S,
 643                .flags  = IORESOURCE_IRQ,
 644        },
 645        {
 646                .name   = "ALARM",
 647                .start  = AB8500_INT_RTC_ALARM,
 648                .end    = AB8500_INT_RTC_ALARM,
 649                .flags  = IORESOURCE_IRQ,
 650        },
 651};
 652
 653static struct resource ab8500_poweronkey_db_resources[] = {
 654        {
 655                .name   = "ONKEY_DBF",
 656                .start  = AB8500_INT_PON_KEY1DB_F,
 657                .end    = AB8500_INT_PON_KEY1DB_F,
 658                .flags  = IORESOURCE_IRQ,
 659        },
 660        {
 661                .name   = "ONKEY_DBR",
 662                .start  = AB8500_INT_PON_KEY1DB_R,
 663                .end    = AB8500_INT_PON_KEY1DB_R,
 664                .flags  = IORESOURCE_IRQ,
 665        },
 666};
 667
 668static struct resource ab8500_av_acc_detect_resources[] = {
 669        {
 670               .name = "ACC_DETECT_1DB_F",
 671               .start = AB8500_INT_ACC_DETECT_1DB_F,
 672               .end = AB8500_INT_ACC_DETECT_1DB_F,
 673               .flags = IORESOURCE_IRQ,
 674        },
 675        {
 676               .name = "ACC_DETECT_1DB_R",
 677               .start = AB8500_INT_ACC_DETECT_1DB_R,
 678               .end = AB8500_INT_ACC_DETECT_1DB_R,
 679               .flags = IORESOURCE_IRQ,
 680        },
 681        {
 682               .name = "ACC_DETECT_21DB_F",
 683               .start = AB8500_INT_ACC_DETECT_21DB_F,
 684               .end = AB8500_INT_ACC_DETECT_21DB_F,
 685               .flags = IORESOURCE_IRQ,
 686        },
 687        {
 688               .name = "ACC_DETECT_21DB_R",
 689               .start = AB8500_INT_ACC_DETECT_21DB_R,
 690               .end = AB8500_INT_ACC_DETECT_21DB_R,
 691               .flags = IORESOURCE_IRQ,
 692        },
 693        {
 694               .name = "ACC_DETECT_22DB_F",
 695               .start = AB8500_INT_ACC_DETECT_22DB_F,
 696               .end = AB8500_INT_ACC_DETECT_22DB_F,
 697               .flags = IORESOURCE_IRQ,
 698        },
 699        {
 700               .name = "ACC_DETECT_22DB_R",
 701               .start = AB8500_INT_ACC_DETECT_22DB_R,
 702               .end = AB8500_INT_ACC_DETECT_22DB_R,
 703               .flags = IORESOURCE_IRQ,
 704        },
 705};
 706
 707static struct resource ab8500_charger_resources[] = {
 708        {
 709                .name = "MAIN_CH_UNPLUG_DET",
 710                .start = AB8500_INT_MAIN_CH_UNPLUG_DET,
 711                .end = AB8500_INT_MAIN_CH_UNPLUG_DET,
 712                .flags = IORESOURCE_IRQ,
 713        },
 714        {
 715                .name = "MAIN_CHARGE_PLUG_DET",
 716                .start = AB8500_INT_MAIN_CH_PLUG_DET,
 717                .end = AB8500_INT_MAIN_CH_PLUG_DET,
 718                .flags = IORESOURCE_IRQ,
 719        },
 720        {
 721                .name = "VBUS_DET_R",
 722                .start = AB8500_INT_VBUS_DET_R,
 723                .end = AB8500_INT_VBUS_DET_R,
 724                .flags = IORESOURCE_IRQ,
 725        },
 726        {
 727                .name = "VBUS_DET_F",
 728                .start = AB8500_INT_VBUS_DET_F,
 729                .end = AB8500_INT_VBUS_DET_F,
 730                .flags = IORESOURCE_IRQ,
 731        },
 732        {
 733                .name = "USB_LINK_STATUS",
 734                .start = AB8500_INT_USB_LINK_STATUS,
 735                .end = AB8500_INT_USB_LINK_STATUS,
 736                .flags = IORESOURCE_IRQ,
 737        },
 738        {
 739                .name = "VBUS_OVV",
 740                .start = AB8500_INT_VBUS_OVV,
 741                .end = AB8500_INT_VBUS_OVV,
 742                .flags = IORESOURCE_IRQ,
 743        },
 744        {
 745                .name = "USB_CH_TH_PROT_R",
 746                .start = AB8500_INT_USB_CH_TH_PROT_R,
 747                .end = AB8500_INT_USB_CH_TH_PROT_R,
 748                .flags = IORESOURCE_IRQ,
 749        },
 750        {
 751                .name = "USB_CH_TH_PROT_F",
 752                .start = AB8500_INT_USB_CH_TH_PROT_F,
 753                .end = AB8500_INT_USB_CH_TH_PROT_F,
 754                .flags = IORESOURCE_IRQ,
 755        },
 756        {
 757                .name = "MAIN_EXT_CH_NOT_OK",
 758                .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 759                .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 760                .flags = IORESOURCE_IRQ,
 761        },
 762        {
 763                .name = "MAIN_CH_TH_PROT_R",
 764                .start = AB8500_INT_MAIN_CH_TH_PROT_R,
 765                .end = AB8500_INT_MAIN_CH_TH_PROT_R,
 766                .flags = IORESOURCE_IRQ,
 767        },
 768        {
 769                .name = "MAIN_CH_TH_PROT_F",
 770                .start = AB8500_INT_MAIN_CH_TH_PROT_F,
 771                .end = AB8500_INT_MAIN_CH_TH_PROT_F,
 772                .flags = IORESOURCE_IRQ,
 773        },
 774        {
 775                .name = "USB_CHARGER_NOT_OKR",
 776                .start = AB8500_INT_USB_CHARGER_NOT_OKR,
 777                .end = AB8500_INT_USB_CHARGER_NOT_OKR,
 778                .flags = IORESOURCE_IRQ,
 779        },
 780        {
 781                .name = "CH_WD_EXP",
 782                .start = AB8500_INT_CH_WD_EXP,
 783                .end = AB8500_INT_CH_WD_EXP,
 784                .flags = IORESOURCE_IRQ,
 785        },
 786        {
 787                .name = "VBUS_CH_DROP_END",
 788                .start = AB8500_INT_VBUS_CH_DROP_END,
 789                .end = AB8500_INT_VBUS_CH_DROP_END,
 790                .flags = IORESOURCE_IRQ,
 791        },
 792};
 793
 794static struct resource ab8500_btemp_resources[] = {
 795        {
 796                .name = "BAT_CTRL_INDB",
 797                .start = AB8500_INT_BAT_CTRL_INDB,
 798                .end = AB8500_INT_BAT_CTRL_INDB,
 799                .flags = IORESOURCE_IRQ,
 800        },
 801        {
 802                .name = "BTEMP_LOW",
 803                .start = AB8500_INT_BTEMP_LOW,
 804                .end = AB8500_INT_BTEMP_LOW,
 805                .flags = IORESOURCE_IRQ,
 806        },
 807        {
 808                .name = "BTEMP_HIGH",
 809                .start = AB8500_INT_BTEMP_HIGH,
 810                .end = AB8500_INT_BTEMP_HIGH,
 811                .flags = IORESOURCE_IRQ,
 812        },
 813        {
 814                .name = "BTEMP_LOW_MEDIUM",
 815                .start = AB8500_INT_BTEMP_LOW_MEDIUM,
 816                .end = AB8500_INT_BTEMP_LOW_MEDIUM,
 817                .flags = IORESOURCE_IRQ,
 818        },
 819        {
 820                .name = "BTEMP_MEDIUM_HIGH",
 821                .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
 822                .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
 823                .flags = IORESOURCE_IRQ,
 824        },
 825};
 826
 827static struct resource ab8500_fg_resources[] = {
 828        {
 829                .name = "NCONV_ACCU",
 830                .start = AB8500_INT_CCN_CONV_ACC,
 831                .end = AB8500_INT_CCN_CONV_ACC,
 832                .flags = IORESOURCE_IRQ,
 833        },
 834        {
 835                .name = "BATT_OVV",
 836                .start = AB8500_INT_BATT_OVV,
 837                .end = AB8500_INT_BATT_OVV,
 838                .flags = IORESOURCE_IRQ,
 839        },
 840        {
 841                .name = "LOW_BAT_F",
 842                .start = AB8500_INT_LOW_BAT_F,
 843                .end = AB8500_INT_LOW_BAT_F,
 844                .flags = IORESOURCE_IRQ,
 845        },
 846        {
 847                .name = "LOW_BAT_R",
 848                .start = AB8500_INT_LOW_BAT_R,
 849                .end = AB8500_INT_LOW_BAT_R,
 850                .flags = IORESOURCE_IRQ,
 851        },
 852        {
 853                .name = "CC_INT_CALIB",
 854                .start = AB8500_INT_CC_INT_CALIB,
 855                .end = AB8500_INT_CC_INT_CALIB,
 856                .flags = IORESOURCE_IRQ,
 857        },
 858        {
 859                .name = "CCEOC",
 860                .start = AB8500_INT_CCEOC,
 861                .end = AB8500_INT_CCEOC,
 862                .flags = IORESOURCE_IRQ,
 863        },
 864};
 865
 866static struct resource ab8500_chargalg_resources[] = {};
 867
 868#ifdef CONFIG_DEBUG_FS
 869static struct resource ab8500_debug_resources[] = {
 870        {
 871                .name   = "IRQ_AB8500",
 872                /*
 873                 * Number will be filled in. NOTE: this is deliberately
 874                 * not flagged as an IRQ in ordet to avoid remapping using
 875                 * the irqdomain in the MFD core, so that this IRQ passes
 876                 * unremapped to the debug code.
 877                 */
 878        },
 879        {
 880                .name   = "IRQ_FIRST",
 881                .start  = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 882                .end    = AB8500_INT_MAIN_EXT_CH_NOT_OK,
 883                .flags  = IORESOURCE_IRQ,
 884        },
 885        {
 886                .name   = "IRQ_LAST",
 887                .start  = AB8500_INT_XTAL32K_KO,
 888                .end    = AB8500_INT_XTAL32K_KO,
 889                .flags  = IORESOURCE_IRQ,
 890        },
 891};
 892#endif
 893
 894static struct resource ab8500_usb_resources[] = {
 895        {
 896                .name = "ID_WAKEUP_R",
 897                .start = AB8500_INT_ID_WAKEUP_R,
 898                .end = AB8500_INT_ID_WAKEUP_R,
 899                .flags = IORESOURCE_IRQ,
 900        },
 901        {
 902                .name = "ID_WAKEUP_F",
 903                .start = AB8500_INT_ID_WAKEUP_F,
 904                .end = AB8500_INT_ID_WAKEUP_F,
 905                .flags = IORESOURCE_IRQ,
 906        },
 907        {
 908                .name = "VBUS_DET_F",
 909                .start = AB8500_INT_VBUS_DET_F,
 910                .end = AB8500_INT_VBUS_DET_F,
 911                .flags = IORESOURCE_IRQ,
 912        },
 913        {
 914                .name = "VBUS_DET_R",
 915                .start = AB8500_INT_VBUS_DET_R,
 916                .end = AB8500_INT_VBUS_DET_R,
 917                .flags = IORESOURCE_IRQ,
 918        },
 919        {
 920                .name = "USB_LINK_STATUS",
 921                .start = AB8500_INT_USB_LINK_STATUS,
 922                .end = AB8500_INT_USB_LINK_STATUS,
 923                .flags = IORESOURCE_IRQ,
 924        },
 925        {
 926                .name = "USB_ADP_PROBE_PLUG",
 927                .start = AB8500_INT_ADP_PROBE_PLUG,
 928                .end = AB8500_INT_ADP_PROBE_PLUG,
 929                .flags = IORESOURCE_IRQ,
 930        },
 931        {
 932                .name = "USB_ADP_PROBE_UNPLUG",
 933                .start = AB8500_INT_ADP_PROBE_UNPLUG,
 934                .end = AB8500_INT_ADP_PROBE_UNPLUG,
 935                .flags = IORESOURCE_IRQ,
 936        },
 937};
 938
 939static struct resource ab8505_iddet_resources[] = {
 940        {
 941                .name  = "KeyDeglitch",
 942                .start = AB8505_INT_KEYDEGLITCH,
 943                .end   = AB8505_INT_KEYDEGLITCH,
 944                .flags = IORESOURCE_IRQ,
 945        },
 946        {
 947                .name  = "KP",
 948                .start = AB8505_INT_KP,
 949                .end   = AB8505_INT_KP,
 950                .flags = IORESOURCE_IRQ,
 951        },
 952        {
 953                .name  = "IKP",
 954                .start = AB8505_INT_IKP,
 955                .end   = AB8505_INT_IKP,
 956                .flags = IORESOURCE_IRQ,
 957        },
 958        {
 959                .name  = "IKR",
 960                .start = AB8505_INT_IKR,
 961                .end   = AB8505_INT_IKR,
 962                .flags = IORESOURCE_IRQ,
 963        },
 964        {
 965                .name  = "KeyStuck",
 966                .start = AB8505_INT_KEYSTUCK,
 967                .end   = AB8505_INT_KEYSTUCK,
 968                .flags = IORESOURCE_IRQ,
 969        },
 970        {
 971                .name = "VBUS_DET_R",
 972                .start = AB8500_INT_VBUS_DET_R,
 973                .end = AB8500_INT_VBUS_DET_R,
 974                .flags = IORESOURCE_IRQ,
 975        },
 976        {
 977                .name = "VBUS_DET_F",
 978                .start = AB8500_INT_VBUS_DET_F,
 979                .end = AB8500_INT_VBUS_DET_F,
 980                .flags = IORESOURCE_IRQ,
 981        },
 982        {
 983                .name = "ID_DET_PLUGR",
 984                .start = AB8500_INT_ID_DET_PLUGR,
 985                .end = AB8500_INT_ID_DET_PLUGR,
 986                .flags = IORESOURCE_IRQ,
 987        },
 988        {
 989                .name = "ID_DET_PLUGF",
 990                .start = AB8500_INT_ID_DET_PLUGF,
 991                .end = AB8500_INT_ID_DET_PLUGF,
 992                .flags = IORESOURCE_IRQ,
 993        },
 994};
 995
 996static struct resource ab8500_temp_resources[] = {
 997        {
 998                .name  = "ABX500_TEMP_WARM",
 999                .start = AB8500_INT_TEMP_WARM,
1000                .end   = AB8500_INT_TEMP_WARM,
1001                .flags = IORESOURCE_IRQ,
1002        },
1003};
1004
1005static struct mfd_cell ab8500_bm_devs[] = {
1006        {
1007                .name = "ab8500-charger",
1008                .of_compatible = "stericsson,ab8500-charger",
1009                .num_resources = ARRAY_SIZE(ab8500_charger_resources),
1010                .resources = ab8500_charger_resources,
1011                .platform_data = &ab8500_bm_data,
1012                .pdata_size = sizeof(ab8500_bm_data),
1013        },
1014        {
1015                .name = "ab8500-btemp",
1016                .of_compatible = "stericsson,ab8500-btemp",
1017                .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
1018                .resources = ab8500_btemp_resources,
1019                .platform_data = &ab8500_bm_data,
1020                .pdata_size = sizeof(ab8500_bm_data),
1021        },
1022        {
1023                .name = "ab8500-fg",
1024                .of_compatible = "stericsson,ab8500-fg",
1025                .num_resources = ARRAY_SIZE(ab8500_fg_resources),
1026                .resources = ab8500_fg_resources,
1027                .platform_data = &ab8500_bm_data,
1028                .pdata_size = sizeof(ab8500_bm_data),
1029        },
1030        {
1031                .name = "ab8500-chargalg",
1032                .of_compatible = "stericsson,ab8500-chargalg",
1033                .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
1034                .resources = ab8500_chargalg_resources,
1035                .platform_data = &ab8500_bm_data,
1036                .pdata_size = sizeof(ab8500_bm_data),
1037        },
1038};
1039
1040static struct mfd_cell ab8500_devs[] = {
1041#ifdef CONFIG_DEBUG_FS
1042        {
1043                .name = "ab8500-debug",
1044                .of_compatible = "stericsson,ab8500-debug",
1045                .num_resources = ARRAY_SIZE(ab8500_debug_resources),
1046                .resources = ab8500_debug_resources,
1047        },
1048#endif
1049        {
1050                .name = "ab8500-sysctrl",
1051                .of_compatible = "stericsson,ab8500-sysctrl",
1052        },
1053        {
1054                .name = "ab8500-regulator",
1055                .of_compatible = "stericsson,ab8500-regulator",
1056        },
1057        {
1058                .name = "abx500-clk",
1059                .of_compatible = "stericsson,abx500-clk",
1060        },
1061        {
1062                .name = "ab8500-gpadc",
1063                .of_compatible = "stericsson,ab8500-gpadc",
1064                .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
1065                .resources = ab8500_gpadc_resources,
1066        },
1067        {
1068                .name = "ab8500-rtc",
1069                .of_compatible = "stericsson,ab8500-rtc",
1070                .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
1071                .resources = ab8500_rtc_resources,
1072        },
1073        {
1074                .name = "ab8500-acc-det",
1075                .of_compatible = "stericsson,ab8500-acc-det",
1076                .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
1077                .resources = ab8500_av_acc_detect_resources,
1078        },
1079        {
1080
1081                .name = "ab8500-poweron-key",
1082                .of_compatible = "stericsson,ab8500-poweron-key",
1083                .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
1084                .resources = ab8500_poweronkey_db_resources,
1085        },
1086        {
1087                .name = "ab8500-pwm",
1088                .of_compatible = "stericsson,ab8500-pwm",
1089                .id = 1,
1090        },
1091        {
1092                .name = "ab8500-pwm",
1093                .of_compatible = "stericsson,ab8500-pwm",
1094                .id = 2,
1095        },
1096        {
1097                .name = "ab8500-pwm",
1098                .of_compatible = "stericsson,ab8500-pwm",
1099                .id = 3,
1100        },
1101        {
1102                .name = "ab8500-leds",
1103                .of_compatible = "stericsson,ab8500-leds",
1104        },
1105        {
1106                .name = "ab8500-denc",
1107                .of_compatible = "stericsson,ab8500-denc",
1108        },
1109        {
1110                .name = "pinctrl-ab8500",
1111                .of_compatible = "stericsson,ab8500-gpio",
1112        },
1113        {
1114                .name = "abx500-temp",
1115                .of_compatible = "stericsson,abx500-temp",
1116                .num_resources = ARRAY_SIZE(ab8500_temp_resources),
1117                .resources = ab8500_temp_resources,
1118        },
1119        {
1120                .name = "ab8500-usb",
1121                .of_compatible = "stericsson,ab8500-usb",
1122                .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1123                .resources = ab8500_usb_resources,
1124        },
1125        {
1126                .name = "ab8500-codec",
1127        },
1128};
1129
1130static struct mfd_cell ab9540_devs[] = {
1131#ifdef CONFIG_DEBUG_FS
1132        {
1133                .name = "ab8500-debug",
1134                .num_resources = ARRAY_SIZE(ab8500_debug_resources),
1135                .resources = ab8500_debug_resources,
1136        },
1137#endif
1138        {
1139                .name = "ab8500-sysctrl",
1140        },
1141        {
1142                .name = "ab8500-regulator",
1143        },
1144        {
1145                .name = "abx500-clk",
1146                .of_compatible = "stericsson,abx500-clk",
1147        },
1148        {
1149                .name = "ab8500-gpadc",
1150                .of_compatible = "stericsson,ab8500-gpadc",
1151                .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
1152                .resources = ab8500_gpadc_resources,
1153        },
1154        {
1155                .name = "ab8500-rtc",
1156                .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
1157                .resources = ab8500_rtc_resources,
1158        },
1159        {
1160                .name = "ab8500-acc-det",
1161                .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
1162                .resources = ab8500_av_acc_detect_resources,
1163        },
1164        {
1165                .name = "ab8500-poweron-key",
1166                .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
1167                .resources = ab8500_poweronkey_db_resources,
1168        },
1169        {
1170                .name = "ab8500-pwm",
1171                .id = 1,
1172        },
1173        {
1174                .name = "ab8500-leds",
1175        },
1176        {
1177                .name = "abx500-temp",
1178                .num_resources = ARRAY_SIZE(ab8500_temp_resources),
1179                .resources = ab8500_temp_resources,
1180        },
1181        {
1182                .name = "pinctrl-ab9540",
1183                .of_compatible = "stericsson,ab9540-gpio",
1184        },
1185        {
1186                .name = "ab9540-usb",
1187                .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1188                .resources = ab8500_usb_resources,
1189        },
1190        {
1191                .name = "ab9540-codec",
1192        },
1193        {
1194                .name = "ab-iddet",
1195                .num_resources = ARRAY_SIZE(ab8505_iddet_resources),
1196                .resources = ab8505_iddet_resources,
1197        },
1198};
1199
1200/* Device list for ab8505  */
1201static struct mfd_cell ab8505_devs[] = {
1202#ifdef CONFIG_DEBUG_FS
1203        {
1204                .name = "ab8500-debug",
1205                .num_resources = ARRAY_SIZE(ab8500_debug_resources),
1206                .resources = ab8500_debug_resources,
1207        },
1208#endif
1209        {
1210                .name = "ab8500-sysctrl",
1211        },
1212        {
1213                .name = "ab8500-regulator",
1214        },
1215        {
1216                .name = "abx500-clk",
1217                .of_compatible = "stericsson,abx500-clk",
1218        },
1219        {
1220                .name = "ab8500-gpadc",
1221                .of_compatible = "stericsson,ab8500-gpadc",
1222                .num_resources = ARRAY_SIZE(ab8505_gpadc_resources),
1223                .resources = ab8505_gpadc_resources,
1224        },
1225        {
1226                .name = "ab8500-rtc",
1227                .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
1228                .resources = ab8500_rtc_resources,
1229        },
1230        {
1231                .name = "ab8500-acc-det",
1232                .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
1233                .resources = ab8500_av_acc_detect_resources,
1234        },
1235        {
1236                .name = "ab8500-poweron-key",
1237                .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
1238                .resources = ab8500_poweronkey_db_resources,
1239        },
1240        {
1241                .name = "ab8500-pwm",
1242                .id = 1,
1243        },
1244        {
1245                .name = "ab8500-leds",
1246        },
1247        {
1248                .name = "pinctrl-ab8505",
1249        },
1250        {
1251                .name = "ab8500-usb",
1252                .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1253                .resources = ab8500_usb_resources,
1254        },
1255        {
1256                .name = "ab8500-codec",
1257        },
1258        {
1259                .name = "ab-iddet",
1260                .num_resources = ARRAY_SIZE(ab8505_iddet_resources),
1261                .resources = ab8505_iddet_resources,
1262        },
1263};
1264
1265static struct mfd_cell ab8540_devs[] = {
1266#ifdef CONFIG_DEBUG_FS
1267        {
1268                .name = "ab8500-debug",
1269                .num_resources = ARRAY_SIZE(ab8500_debug_resources),
1270                .resources = ab8500_debug_resources,
1271        },
1272#endif
1273        {
1274                .name = "ab8500-sysctrl",
1275        },
1276        {
1277                .name = "ab8500-regulator",
1278        },
1279        {
1280                .name = "abx500-clk",
1281                .of_compatible = "stericsson,abx500-clk",
1282        },
1283        {
1284                .name = "ab8500-gpadc",
1285                .of_compatible = "stericsson,ab8500-gpadc",
1286                .num_resources = ARRAY_SIZE(ab8505_gpadc_resources),
1287                .resources = ab8505_gpadc_resources,
1288        },
1289        {
1290                .name = "ab8500-rtc",
1291                .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
1292                .resources = ab8500_rtc_resources,
1293        },
1294        {
1295                .name = "ab8500-acc-det",
1296                .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
1297                .resources = ab8500_av_acc_detect_resources,
1298        },
1299        {
1300                .name = "ab8500-poweron-key",
1301                .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
1302                .resources = ab8500_poweronkey_db_resources,
1303        },
1304        {
1305                .name = "ab8500-pwm",
1306                .id = 1,
1307        },
1308        {
1309                .name = "ab8500-leds",
1310        },
1311        {
1312                .name = "abx500-temp",
1313                .num_resources = ARRAY_SIZE(ab8500_temp_resources),
1314                .resources = ab8500_temp_resources,
1315        },
1316        {
1317                .name = "pinctrl-ab8540",
1318        },
1319        {
1320                .name = "ab8540-usb",
1321                .num_resources = ARRAY_SIZE(ab8500_usb_resources),
1322                .resources = ab8500_usb_resources,
1323        },
1324        {
1325                .name = "ab8540-codec",
1326        },
1327        {
1328                .name = "ab-iddet",
1329                .num_resources = ARRAY_SIZE(ab8505_iddet_resources),
1330                .resources = ab8505_iddet_resources,
1331        },
1332};
1333
1334static ssize_t show_chip_id(struct device *dev,
1335                                struct device_attribute *attr, char *buf)
1336{
1337        struct ab8500 *ab8500;
1338
1339        ab8500 = dev_get_drvdata(dev);
1340
1341        return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
1342}
1343
1344/*
1345 * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1346 * 0x01 Swoff bit programming
1347 * 0x02 Thermal protection activation
1348 * 0x04 Vbat lower then BattOk falling threshold
1349 * 0x08 Watchdog expired
1350 * 0x10 Non presence of 32kHz clock
1351 * 0x20 Battery level lower than power on reset threshold
1352 * 0x40 Power on key 1 pressed longer than 10 seconds
1353 * 0x80 DB8500 thermal shutdown
1354 */
1355static ssize_t show_switch_off_status(struct device *dev,
1356                                struct device_attribute *attr, char *buf)
1357{
1358        int ret;
1359        u8 value;
1360        struct ab8500 *ab8500;
1361
1362        ab8500 = dev_get_drvdata(dev);
1363        ret = get_register_interruptible(ab8500, AB8500_RTC,
1364                AB8500_SWITCH_OFF_STATUS, &value);
1365        if (ret < 0)
1366                return ret;
1367        return sprintf(buf, "%#x\n", value);
1368}
1369
1370/* use mask and set to override the register turn_on_stat value */
1371void ab8500_override_turn_on_stat(u8 mask, u8 set)
1372{
1373        spin_lock(&on_stat_lock);
1374        turn_on_stat_mask = mask;
1375        turn_on_stat_set = set;
1376        spin_unlock(&on_stat_lock);
1377}
1378
1379/*
1380 * ab8500 has turned on due to (TURN_ON_STATUS):
1381 * 0x01 PORnVbat
1382 * 0x02 PonKey1dbF
1383 * 0x04 PonKey2dbF
1384 * 0x08 RTCAlarm
1385 * 0x10 MainChDet
1386 * 0x20 VbusDet
1387 * 0x40 UsbIDDetect
1388 * 0x80 Reserved
1389 */
1390static ssize_t show_turn_on_status(struct device *dev,
1391                                struct device_attribute *attr, char *buf)
1392{
1393        int ret;
1394        u8 value;
1395        struct ab8500 *ab8500;
1396
1397        ab8500 = dev_get_drvdata(dev);
1398        ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1399                AB8500_TURN_ON_STATUS, &value);
1400        if (ret < 0)
1401                return ret;
1402
1403        /*
1404         * In L9540, turn_on_status register is not updated correctly if
1405         * the device is rebooted with AC/USB charger connected. Due to
1406         * this, the device boots android instead of entering into charge
1407         * only mode. Read the AC/USB status register to detect the charger
1408         * presence and update the turn on status manually.
1409         */
1410        if (is_ab9540(ab8500)) {
1411                spin_lock(&on_stat_lock);
1412                value = (value & turn_on_stat_mask) | turn_on_stat_set;
1413                spin_unlock(&on_stat_lock);
1414        }
1415
1416        return sprintf(buf, "%#x\n", value);
1417}
1418
1419static ssize_t show_turn_on_status_2(struct device *dev,
1420                                struct device_attribute *attr, char *buf)
1421{
1422        int ret;
1423        u8 value;
1424        struct ab8500 *ab8500;
1425
1426        ab8500 = dev_get_drvdata(dev);
1427        ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1428                AB8505_TURN_ON_STATUS_2, &value);
1429        if (ret < 0)
1430                return ret;
1431        return sprintf(buf, "%#x\n", (value & 0x1));
1432}
1433
1434static ssize_t show_ab9540_dbbrstn(struct device *dev,
1435                                struct device_attribute *attr, char *buf)
1436{
1437        struct ab8500 *ab8500;
1438        int ret;
1439        u8 value;
1440
1441        ab8500 = dev_get_drvdata(dev);
1442
1443        ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
1444                AB9540_MODEM_CTRL2_REG, &value);
1445        if (ret < 0)
1446                return ret;
1447
1448        return sprintf(buf, "%d\n",
1449                        (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
1450}
1451
1452static ssize_t store_ab9540_dbbrstn(struct device *dev,
1453        struct device_attribute *attr, const char *buf, size_t count)
1454{
1455        struct ab8500 *ab8500;
1456        int ret = count;
1457        int err;
1458        u8 bitvalues;
1459
1460        ab8500 = dev_get_drvdata(dev);
1461
1462        if (count > 0) {
1463                switch (buf[0]) {
1464                case '0':
1465                        bitvalues = 0;
1466                        break;
1467                case '1':
1468                        bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
1469                        break;
1470                default:
1471                        goto exit;
1472                }
1473
1474                err = mask_and_set_register_interruptible(ab8500,
1475                        AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
1476                        AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
1477                if (err)
1478                        dev_info(ab8500->dev,
1479                                "Failed to set DBBRSTN %c, err %#x\n",
1480                                buf[0], err);
1481        }
1482
1483exit:
1484        return ret;
1485}
1486
1487static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
1488static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
1489static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
1490static DEVICE_ATTR(turn_on_status_2, S_IRUGO, show_turn_on_status_2, NULL);
1491static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
1492                        show_ab9540_dbbrstn, store_ab9540_dbbrstn);
1493
1494static struct attribute *ab8500_sysfs_entries[] = {
1495        &dev_attr_chip_id.attr,
1496        &dev_attr_switch_off_status.attr,
1497        &dev_attr_turn_on_status.attr,
1498        NULL,
1499};
1500
1501static struct attribute *ab8505_sysfs_entries[] = {
1502        &dev_attr_turn_on_status_2.attr,
1503        NULL,
1504};
1505
1506static struct attribute *ab9540_sysfs_entries[] = {
1507        &dev_attr_chip_id.attr,
1508        &dev_attr_switch_off_status.attr,
1509        &dev_attr_turn_on_status.attr,
1510        &dev_attr_dbbrstn.attr,
1511        NULL,
1512};
1513
1514static struct attribute_group ab8500_attr_group = {
1515        .attrs  = ab8500_sysfs_entries,
1516};
1517
1518static struct attribute_group ab8505_attr_group = {
1519        .attrs  = ab8505_sysfs_entries,
1520};
1521
1522static struct attribute_group ab9540_attr_group = {
1523        .attrs  = ab9540_sysfs_entries,
1524};
1525
1526static int ab8500_probe(struct platform_device *pdev)
1527{
1528        static char *switch_off_status[] = {
1529                "Swoff bit programming",
1530                "Thermal protection activation",
1531                "Vbat lower then BattOk falling threshold",
1532                "Watchdog expired",
1533                "Non presence of 32kHz clock",
1534                "Battery level lower than power on reset threshold",
1535                "Power on key 1 pressed longer than 10 seconds",
1536                "DB8500 thermal shutdown"};
1537        static char *turn_on_status[] = {
1538                "Battery rising (Vbat)",
1539                "Power On Key 1 dbF",
1540                "Power On Key 2 dbF",
1541                "RTC Alarm",
1542                "Main Charger Detect",
1543                "Vbus Detect (USB)",
1544                "USB ID Detect",
1545                "UART Factory Mode Detect"};
1546        struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev);
1547        const struct platform_device_id *platid = platform_get_device_id(pdev);
1548        enum ab8500_version version = AB8500_VERSION_UNDEFINED;
1549        struct device_node *np = pdev->dev.of_node;
1550        struct ab8500 *ab8500;
1551        struct resource *resource;
1552        int ret;
1553        int i;
1554        u8 value;
1555
1556        ab8500 = devm_kzalloc(&pdev->dev, sizeof *ab8500, GFP_KERNEL);
1557        if (!ab8500)
1558                return -ENOMEM;
1559
1560        if (plat)
1561                ab8500->irq_base = plat->irq_base;
1562
1563        ab8500->dev = &pdev->dev;
1564
1565        resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1566        if (!resource)
1567                return -ENODEV;
1568
1569        ab8500->irq = resource->start;
1570
1571        ab8500->read = ab8500_prcmu_read;
1572        ab8500->write = ab8500_prcmu_write;
1573        ab8500->write_masked = ab8500_prcmu_write_masked;
1574
1575        mutex_init(&ab8500->lock);
1576        mutex_init(&ab8500->irq_lock);
1577        atomic_set(&ab8500->transfer_ongoing, 0);
1578
1579        platform_set_drvdata(pdev, ab8500);
1580
1581        if (platid)
1582                version = platid->driver_data;
1583
1584        if (version != AB8500_VERSION_UNDEFINED)
1585                ab8500->version = version;
1586        else {
1587                ret = get_register_interruptible(ab8500, AB8500_MISC,
1588                        AB8500_IC_NAME_REG, &value);
1589                if (ret < 0)
1590                        return ret;
1591
1592                ab8500->version = value;
1593        }
1594
1595        ret = get_register_interruptible(ab8500, AB8500_MISC,
1596                AB8500_REV_REG, &value);
1597        if (ret < 0)
1598                return ret;
1599
1600        ab8500->chip_id = value;
1601
1602        dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
1603                        ab8500_version_str[ab8500->version],
1604                        ab8500->chip_id >> 4,
1605                        ab8500->chip_id & 0x0F);
1606
1607        /* Configure AB8540 */
1608        if (is_ab8540(ab8500)) {
1609                ab8500->mask_size = AB8540_NUM_IRQ_REGS;
1610                ab8500->irq_reg_offset = ab8540_irq_regoffset;
1611                ab8500->it_latchhier_num = AB8540_IT_LATCHHIER_NUM;
1612        }/* Configure AB8500 or AB9540 IRQ */
1613        else if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
1614                ab8500->mask_size = AB9540_NUM_IRQ_REGS;
1615                ab8500->irq_reg_offset = ab9540_irq_regoffset;
1616                ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
1617        } else {
1618                ab8500->mask_size = AB8500_NUM_IRQ_REGS;
1619                ab8500->irq_reg_offset = ab8500_irq_regoffset;
1620                ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
1621        }
1622        ab8500->mask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL);
1623        if (!ab8500->mask)
1624                return -ENOMEM;
1625        ab8500->oldmask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL);
1626        if (!ab8500->oldmask)
1627                return -ENOMEM;
1628
1629        /*
1630         * ab8500 has switched off due to (SWITCH_OFF_STATUS):
1631         * 0x01 Swoff bit programming
1632         * 0x02 Thermal protection activation
1633         * 0x04 Vbat lower then BattOk falling threshold
1634         * 0x08 Watchdog expired
1635         * 0x10 Non presence of 32kHz clock
1636         * 0x20 Battery level lower than power on reset threshold
1637         * 0x40 Power on key 1 pressed longer than 10 seconds
1638         * 0x80 DB8500 thermal shutdown
1639         */
1640
1641        ret = get_register_interruptible(ab8500, AB8500_RTC,
1642                AB8500_SWITCH_OFF_STATUS, &value);
1643        if (ret < 0)
1644                return ret;
1645        dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value);
1646
1647        if (value) {
1648                for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) {
1649                        if (value & 1)
1650                                printk(KERN_CONT " \"%s\"",
1651                                       switch_off_status[i]);
1652                        value = value >> 1;
1653
1654                }
1655                printk(KERN_CONT "\n");
1656        } else {
1657                printk(KERN_CONT " None\n");
1658        }
1659        ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
1660                AB8500_TURN_ON_STATUS, &value);
1661        if (ret < 0)
1662                return ret;
1663        dev_info(ab8500->dev, "turn on reason(s) (%#x): ", value);
1664
1665        if (value) {
1666                for (i = 0; i < ARRAY_SIZE(turn_on_status); i++) {
1667                        if (value & 1)
1668                                printk("\"%s\" ", turn_on_status[i]);
1669                        value = value >> 1;
1670                }
1671                printk("\n");
1672        } else {
1673                printk("None\n");
1674        }
1675
1676        if (plat && plat->init)
1677                plat->init(ab8500);
1678
1679        if (is_ab9540(ab8500)) {
1680                ret = get_register_interruptible(ab8500, AB8500_CHARGER,
1681                        AB8500_CH_USBCH_STAT1_REG, &value);
1682                if (ret < 0)
1683                        return ret;
1684                if ((value & VBUS_DET_DBNC1) && (value & VBUS_DET_DBNC100))
1685                        ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON,
1686                                                     AB8500_VBUS_DET);
1687        }
1688
1689        /* Clear and mask all interrupts */
1690        for (i = 0; i < ab8500->mask_size; i++) {
1691                /*
1692                 * Interrupt register 12 doesn't exist prior to AB8500 version
1693                 * 2.0
1694                 */
1695                if (ab8500->irq_reg_offset[i] == 11 &&
1696                                is_ab8500_1p1_or_earlier(ab8500))
1697                        continue;
1698
1699                if (ab8500->irq_reg_offset[i] < 0)
1700                        continue;
1701
1702                get_register_interruptible(ab8500, AB8500_INTERRUPT,
1703                        AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
1704                        &value);
1705                set_register_interruptible(ab8500, AB8500_INTERRUPT,
1706                        AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
1707        }
1708
1709        ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
1710        if (ret)
1711                return ret;
1712
1713        for (i = 0; i < ab8500->mask_size; i++)
1714                ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
1715
1716        ret = ab8500_irq_init(ab8500, np);
1717        if (ret)
1718                return ret;
1719
1720        ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
1721                        ab8500_hierarchical_irq,
1722                        IRQF_ONESHOT | IRQF_NO_SUSPEND,
1723                        "ab8500", ab8500);
1724        if (ret)
1725                return ret;
1726
1727#if CONFIG_DEBUG_FS
1728        /* Pass to debugfs */
1729        ab8500_debug_resources[0].start = ab8500->irq;
1730        ab8500_debug_resources[0].end = ab8500->irq;
1731#endif
1732
1733        if (is_ab9540(ab8500))
1734                ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
1735                                ARRAY_SIZE(ab9540_devs), NULL,
1736                                ab8500->irq_base, ab8500->domain);
1737        else if (is_ab8540(ab8500))
1738                ret = mfd_add_devices(ab8500->dev, 0, ab8540_devs,
1739                              ARRAY_SIZE(ab8540_devs), NULL,
1740                              ab8500->irq_base, ab8500->domain);
1741        else if (is_ab8505(ab8500))
1742                ret = mfd_add_devices(ab8500->dev, 0, ab8505_devs,
1743                              ARRAY_SIZE(ab8505_devs), NULL,
1744                              ab8500->irq_base, ab8500->domain);
1745        else
1746                ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
1747                                ARRAY_SIZE(ab8500_devs), NULL,
1748                                ab8500->irq_base, ab8500->domain);
1749        if (ret)
1750                return ret;
1751
1752        if (!no_bm) {
1753                /* Add battery management devices */
1754                ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
1755                                      ARRAY_SIZE(ab8500_bm_devs), NULL,
1756                                      ab8500->irq_base, ab8500->domain);
1757                if (ret)
1758                        dev_err(ab8500->dev, "error adding bm devices\n");
1759        }
1760
1761        if (((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1762                        ab8500->chip_id >= AB8500_CUT2P0) || is_ab8540(ab8500))
1763                ret = sysfs_create_group(&ab8500->dev->kobj,
1764                                        &ab9540_attr_group);
1765        else
1766                ret = sysfs_create_group(&ab8500->dev->kobj,
1767                                        &ab8500_attr_group);
1768
1769        if ((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1770                        ab8500->chip_id >= AB8500_CUT2P0)
1771                ret = sysfs_create_group(&ab8500->dev->kobj,
1772                                         &ab8505_attr_group);
1773
1774        if (ret)
1775                dev_err(ab8500->dev, "error creating sysfs entries\n");
1776
1777        return ret;
1778}
1779
1780static int ab8500_remove(struct platform_device *pdev)
1781{
1782        struct ab8500 *ab8500 = platform_get_drvdata(pdev);
1783
1784        if (((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1785                        ab8500->chip_id >= AB8500_CUT2P0) || is_ab8540(ab8500))
1786                sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group);
1787        else
1788                sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
1789
1790        if ((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
1791                        ab8500->chip_id >= AB8500_CUT2P0)
1792                sysfs_remove_group(&ab8500->dev->kobj, &ab8505_attr_group);
1793
1794        mfd_remove_devices(ab8500->dev);
1795
1796        return 0;
1797}
1798
1799static const struct platform_device_id ab8500_id[] = {
1800        { "ab8500-core", AB8500_VERSION_AB8500 },
1801        { "ab8505-i2c", AB8500_VERSION_AB8505 },
1802        { "ab9540-i2c", AB8500_VERSION_AB9540 },
1803        { "ab8540-i2c", AB8500_VERSION_AB8540 },
1804        { }
1805};
1806
1807static struct platform_driver ab8500_core_driver = {
1808        .driver = {
1809                .name = "ab8500-core",
1810                .owner = THIS_MODULE,
1811        },
1812        .probe  = ab8500_probe,
1813        .remove = ab8500_remove,
1814        .id_table = ab8500_id,
1815};
1816
1817static int __init ab8500_core_init(void)
1818{
1819        return platform_driver_register(&ab8500_core_driver);
1820}
1821
1822static void __exit ab8500_core_exit(void)
1823{
1824        platform_driver_unregister(&ab8500_core_driver);
1825}
1826core_initcall(ab8500_core_init);
1827module_exit(ab8500_core_exit);
1828
1829MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
1830MODULE_DESCRIPTION("AB8500 MFD core");
1831MODULE_LICENSE("GPL v2");
1832
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