diff --git a/services/inputflinger/EventHub.cpp b/services/inputflinger/EventHub.cpp
new file mode 100644
index 0000000..e2efd17
--- /dev/null
+++ b/services/inputflinger/EventHub.cpp
@@ -0,0 +1,1669 @@
+/*
+ * Copyright (C) 2005 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "EventHub"
+
+// #define LOG_NDEBUG 0
+
+#include "EventHub.h"
+
+#include <hardware_legacy/power.h>
+
+#include <cutils/properties.h>
+#include <utils/Log.h>
+#include <utils/Timers.h>
+#include <utils/threads.h>
+#include <utils/Errors.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <memory.h>
+#include <errno.h>
+#include <assert.h>
+
+#include <input/KeyLayoutMap.h>
+#include <input/KeyCharacterMap.h>
+#include <input/VirtualKeyMap.h>
+
+#include <string.h>
+#include <stdint.h>
+#include <dirent.h>
+
+#include <sys/inotify.h>
+#include <sys/epoll.h>
+#include <sys/ioctl.h>
+#include <sys/limits.h>
+#include <sys/sha1.h>
+#include <sys/utsname.h>
+
+/* this macro is used to tell if "bit" is set in "array"
+ * it selects a byte from the array, and does a boolean AND
+ * operation with a byte that only has the relevant bit set.
+ * eg. to check for the 12th bit, we do (array[1] & 1<<4)
+ */
+#define test_bit(bit, array)    (array[bit/8] & (1<<(bit%8)))
+
+/* this macro computes the number of bytes needed to represent a bit array of the specified size */
+#define sizeof_bit_array(bits)  ((bits + 7) / 8)
+
+#define INDENT "  "
+#define INDENT2 "    "
+#define INDENT3 "      "
+
+namespace android {
+
+static const char *WAKE_LOCK_ID = "KeyEvents";
+static const char *DEVICE_PATH = "/dev/input";
+
+/* return the larger integer */
+static inline int max(int v1, int v2)
+{
+    return (v1 > v2) ? v1 : v2;
+}
+
+static inline const char* toString(bool value) {
+    return value ? "true" : "false";
+}
+
+static String8 sha1(const String8& in) {
+    SHA1_CTX ctx;
+    SHA1Init(&ctx);
+    SHA1Update(&ctx, reinterpret_cast<const u_char*>(in.string()), in.size());
+    u_char digest[SHA1_DIGEST_LENGTH];
+    SHA1Final(digest, &ctx);
+
+    String8 out;
+    for (size_t i = 0; i < SHA1_DIGEST_LENGTH; i++) {
+        out.appendFormat("%02x", digest[i]);
+    }
+    return out;
+}
+
+static void getLinuxRelease(int* major, int* minor) {
+    struct utsname info;
+    if (uname(&info) || sscanf(info.release, "%d.%d", major, minor) <= 0) {
+        *major = 0, *minor = 0;
+        ALOGE("Could not get linux version: %s", strerror(errno));
+    }
+}
+
+// --- Global Functions ---
+
+uint32_t getAbsAxisUsage(int32_t axis, uint32_t deviceClasses) {
+    // Touch devices get dibs on touch-related axes.
+    if (deviceClasses & INPUT_DEVICE_CLASS_TOUCH) {
+        switch (axis) {
+        case ABS_X:
+        case ABS_Y:
+        case ABS_PRESSURE:
+        case ABS_TOOL_WIDTH:
+        case ABS_DISTANCE:
+        case ABS_TILT_X:
+        case ABS_TILT_Y:
+        case ABS_MT_SLOT:
+        case ABS_MT_TOUCH_MAJOR:
+        case ABS_MT_TOUCH_MINOR:
+        case ABS_MT_WIDTH_MAJOR:
+        case ABS_MT_WIDTH_MINOR:
+        case ABS_MT_ORIENTATION:
+        case ABS_MT_POSITION_X:
+        case ABS_MT_POSITION_Y:
+        case ABS_MT_TOOL_TYPE:
+        case ABS_MT_BLOB_ID:
+        case ABS_MT_TRACKING_ID:
+        case ABS_MT_PRESSURE:
+        case ABS_MT_DISTANCE:
+            return INPUT_DEVICE_CLASS_TOUCH;
+        }
+    }
+
+    // Joystick devices get the rest.
+    return deviceClasses & INPUT_DEVICE_CLASS_JOYSTICK;
+}
+
+// --- EventHub::Device ---
+
+EventHub::Device::Device(int fd, int32_t id, const String8& path,
+        const InputDeviceIdentifier& identifier) :
+        next(NULL),
+        fd(fd), id(id), path(path), identifier(identifier),
+        classes(0), configuration(NULL), virtualKeyMap(NULL),
+        ffEffectPlaying(false), ffEffectId(-1), controllerNumber(0),
+        timestampOverrideSec(0), timestampOverrideUsec(0) {
+    memset(keyBitmask, 0, sizeof(keyBitmask));
+    memset(absBitmask, 0, sizeof(absBitmask));
+    memset(relBitmask, 0, sizeof(relBitmask));
+    memset(swBitmask, 0, sizeof(swBitmask));
+    memset(ledBitmask, 0, sizeof(ledBitmask));
+    memset(ffBitmask, 0, sizeof(ffBitmask));
+    memset(propBitmask, 0, sizeof(propBitmask));
+}
+
+EventHub::Device::~Device() {
+    close();
+    delete configuration;
+    delete virtualKeyMap;
+}
+
+void EventHub::Device::close() {
+    if (fd >= 0) {
+        ::close(fd);
+        fd = -1;
+    }
+}
+
+
+// --- EventHub ---
+
+const uint32_t EventHub::EPOLL_ID_INOTIFY;
+const uint32_t EventHub::EPOLL_ID_WAKE;
+const int EventHub::EPOLL_SIZE_HINT;
+const int EventHub::EPOLL_MAX_EVENTS;
+
+EventHub::EventHub(void) :
+        mBuiltInKeyboardId(NO_BUILT_IN_KEYBOARD), mNextDeviceId(1), mControllerNumbers(),
+        mOpeningDevices(0), mClosingDevices(0),
+        mNeedToSendFinishedDeviceScan(false),
+        mNeedToReopenDevices(false), mNeedToScanDevices(true),
+        mPendingEventCount(0), mPendingEventIndex(0), mPendingINotify(false) {
+    acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID);
+
+    mEpollFd = epoll_create(EPOLL_SIZE_HINT);
+    LOG_ALWAYS_FATAL_IF(mEpollFd < 0, "Could not create epoll instance.  errno=%d", errno);
+
+    mINotifyFd = inotify_init();
+    int result = inotify_add_watch(mINotifyFd, DEVICE_PATH, IN_DELETE | IN_CREATE);
+    LOG_ALWAYS_FATAL_IF(result < 0, "Could not register INotify for %s.  errno=%d",
+            DEVICE_PATH, errno);
+
+    struct epoll_event eventItem;
+    memset(&eventItem, 0, sizeof(eventItem));
+    eventItem.events = EPOLLIN;
+    eventItem.data.u32 = EPOLL_ID_INOTIFY;
+    result = epoll_ctl(mEpollFd, EPOLL_CTL_ADD, mINotifyFd, &eventItem);
+    LOG_ALWAYS_FATAL_IF(result != 0, "Could not add INotify to epoll instance.  errno=%d", errno);
+
+    int wakeFds[2];
+    result = pipe(wakeFds);
+    LOG_ALWAYS_FATAL_IF(result != 0, "Could not create wake pipe.  errno=%d", errno);
+
+    mWakeReadPipeFd = wakeFds[0];
+    mWakeWritePipeFd = wakeFds[1];
+
+    result = fcntl(mWakeReadPipeFd, F_SETFL, O_NONBLOCK);
+    LOG_ALWAYS_FATAL_IF(result != 0, "Could not make wake read pipe non-blocking.  errno=%d",
+            errno);
+
+    result = fcntl(mWakeWritePipeFd, F_SETFL, O_NONBLOCK);
+    LOG_ALWAYS_FATAL_IF(result != 0, "Could not make wake write pipe non-blocking.  errno=%d",
+            errno);
+
+    eventItem.data.u32 = EPOLL_ID_WAKE;
+    result = epoll_ctl(mEpollFd, EPOLL_CTL_ADD, mWakeReadPipeFd, &eventItem);
+    LOG_ALWAYS_FATAL_IF(result != 0, "Could not add wake read pipe to epoll instance.  errno=%d",
+            errno);
+
+    int major, minor;
+    getLinuxRelease(&major, &minor);
+    // EPOLLWAKEUP was introduced in kernel 3.5
+    mUsingEpollWakeup = major > 3 || (major == 3 && minor >= 5);
+}
+
+EventHub::~EventHub(void) {
+    closeAllDevicesLocked();
+
+    while (mClosingDevices) {
+        Device* device = mClosingDevices;
+        mClosingDevices = device->next;
+        delete device;
+    }
+
+    ::close(mEpollFd);
+    ::close(mINotifyFd);
+    ::close(mWakeReadPipeFd);
+    ::close(mWakeWritePipeFd);
+
+    release_wake_lock(WAKE_LOCK_ID);
+}
+
+InputDeviceIdentifier EventHub::getDeviceIdentifier(int32_t deviceId) const {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    if (device == NULL) return InputDeviceIdentifier();
+    return device->identifier;
+}
+
+uint32_t EventHub::getDeviceClasses(int32_t deviceId) const {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    if (device == NULL) return 0;
+    return device->classes;
+}
+
+int32_t EventHub::getDeviceControllerNumber(int32_t deviceId) const {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    if (device == NULL) return 0;
+    return device->controllerNumber;
+}
+
+void EventHub::getConfiguration(int32_t deviceId, PropertyMap* outConfiguration) const {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    if (device && device->configuration) {
+        *outConfiguration = *device->configuration;
+    } else {
+        outConfiguration->clear();
+    }
+}
+
+status_t EventHub::getAbsoluteAxisInfo(int32_t deviceId, int axis,
+        RawAbsoluteAxisInfo* outAxisInfo) const {
+    outAxisInfo->clear();
+
+    if (axis >= 0 && axis <= ABS_MAX) {
+        AutoMutex _l(mLock);
+
+        Device* device = getDeviceLocked(deviceId);
+        if (device && !device->isVirtual() && test_bit(axis, device->absBitmask)) {
+            struct input_absinfo info;
+            if(ioctl(device->fd, EVIOCGABS(axis), &info)) {
+                ALOGW("Error reading absolute controller %d for device %s fd %d, errno=%d",
+                     axis, device->identifier.name.string(), device->fd, errno);
+                return -errno;
+            }
+
+            if (info.minimum != info.maximum) {
+                outAxisInfo->valid = true;
+                outAxisInfo->minValue = info.minimum;
+                outAxisInfo->maxValue = info.maximum;
+                outAxisInfo->flat = info.flat;
+                outAxisInfo->fuzz = info.fuzz;
+                outAxisInfo->resolution = info.resolution;
+            }
+            return OK;
+        }
+    }
+    return -1;
+}
+
+bool EventHub::hasRelativeAxis(int32_t deviceId, int axis) const {
+    if (axis >= 0 && axis <= REL_MAX) {
+        AutoMutex _l(mLock);
+
+        Device* device = getDeviceLocked(deviceId);
+        if (device) {
+            return test_bit(axis, device->relBitmask);
+        }
+    }
+    return false;
+}
+
+bool EventHub::hasInputProperty(int32_t deviceId, int property) const {
+    if (property >= 0 && property <= INPUT_PROP_MAX) {
+        AutoMutex _l(mLock);
+
+        Device* device = getDeviceLocked(deviceId);
+        if (device) {
+            return test_bit(property, device->propBitmask);
+        }
+    }
+    return false;
+}
+
+int32_t EventHub::getScanCodeState(int32_t deviceId, int32_t scanCode) const {
+    if (scanCode >= 0 && scanCode <= KEY_MAX) {
+        AutoMutex _l(mLock);
+
+        Device* device = getDeviceLocked(deviceId);
+        if (device && !device->isVirtual() && test_bit(scanCode, device->keyBitmask)) {
+            uint8_t keyState[sizeof_bit_array(KEY_MAX + 1)];
+            memset(keyState, 0, sizeof(keyState));
+            if (ioctl(device->fd, EVIOCGKEY(sizeof(keyState)), keyState) >= 0) {
+                return test_bit(scanCode, keyState) ? AKEY_STATE_DOWN : AKEY_STATE_UP;
+            }
+        }
+    }
+    return AKEY_STATE_UNKNOWN;
+}
+
+int32_t EventHub::getKeyCodeState(int32_t deviceId, int32_t keyCode) const {
+    AutoMutex _l(mLock);
+
+    Device* device = getDeviceLocked(deviceId);
+    if (device && !device->isVirtual() && device->keyMap.haveKeyLayout()) {
+        Vector<int32_t> scanCodes;
+        device->keyMap.keyLayoutMap->findScanCodesForKey(keyCode, &scanCodes);
+        if (scanCodes.size() != 0) {
+            uint8_t keyState[sizeof_bit_array(KEY_MAX + 1)];
+            memset(keyState, 0, sizeof(keyState));
+            if (ioctl(device->fd, EVIOCGKEY(sizeof(keyState)), keyState) >= 0) {
+                for (size_t i = 0; i < scanCodes.size(); i++) {
+                    int32_t sc = scanCodes.itemAt(i);
+                    if (sc >= 0 && sc <= KEY_MAX && test_bit(sc, keyState)) {
+                        return AKEY_STATE_DOWN;
+                    }
+                }
+                return AKEY_STATE_UP;
+            }
+        }
+    }
+    return AKEY_STATE_UNKNOWN;
+}
+
+int32_t EventHub::getSwitchState(int32_t deviceId, int32_t sw) const {
+    if (sw >= 0 && sw <= SW_MAX) {
+        AutoMutex _l(mLock);
+
+        Device* device = getDeviceLocked(deviceId);
+        if (device && !device->isVirtual() && test_bit(sw, device->swBitmask)) {
+            uint8_t swState[sizeof_bit_array(SW_MAX + 1)];
+            memset(swState, 0, sizeof(swState));
+            if (ioctl(device->fd, EVIOCGSW(sizeof(swState)), swState) >= 0) {
+                return test_bit(sw, swState) ? AKEY_STATE_DOWN : AKEY_STATE_UP;
+            }
+        }
+    }
+    return AKEY_STATE_UNKNOWN;
+}
+
+status_t EventHub::getAbsoluteAxisValue(int32_t deviceId, int32_t axis, int32_t* outValue) const {
+    *outValue = 0;
+
+    if (axis >= 0 && axis <= ABS_MAX) {
+        AutoMutex _l(mLock);
+
+        Device* device = getDeviceLocked(deviceId);
+        if (device && !device->isVirtual() && test_bit(axis, device->absBitmask)) {
+            struct input_absinfo info;
+            if(ioctl(device->fd, EVIOCGABS(axis), &info)) {
+                ALOGW("Error reading absolute controller %d for device %s fd %d, errno=%d",
+                     axis, device->identifier.name.string(), device->fd, errno);
+                return -errno;
+            }
+
+            *outValue = info.value;
+            return OK;
+        }
+    }
+    return -1;
+}
+
+bool EventHub::markSupportedKeyCodes(int32_t deviceId, size_t numCodes,
+        const int32_t* keyCodes, uint8_t* outFlags) const {
+    AutoMutex _l(mLock);
+
+    Device* device = getDeviceLocked(deviceId);
+    if (device && device->keyMap.haveKeyLayout()) {
+        Vector<int32_t> scanCodes;
+        for (size_t codeIndex = 0; codeIndex < numCodes; codeIndex++) {
+            scanCodes.clear();
+
+            status_t err = device->keyMap.keyLayoutMap->findScanCodesForKey(
+                    keyCodes[codeIndex], &scanCodes);
+            if (! err) {
+                // check the possible scan codes identified by the layout map against the
+                // map of codes actually emitted by the driver
+                for (size_t sc = 0; sc < scanCodes.size(); sc++) {
+                    if (test_bit(scanCodes[sc], device->keyBitmask)) {
+                        outFlags[codeIndex] = 1;
+                        break;
+                    }
+                }
+            }
+        }
+        return true;
+    }
+    return false;
+}
+
+status_t EventHub::mapKey(int32_t deviceId, int32_t scanCode, int32_t usageCode,
+        int32_t* outKeycode, uint32_t* outFlags) const {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+
+    if (device) {
+        // Check the key character map first.
+        sp<KeyCharacterMap> kcm = device->getKeyCharacterMap();
+        if (kcm != NULL) {
+            if (!kcm->mapKey(scanCode, usageCode, outKeycode)) {
+                *outFlags = 0;
+                return NO_ERROR;
+            }
+        }
+
+        // Check the key layout next.
+        if (device->keyMap.haveKeyLayout()) {
+            if (!device->keyMap.keyLayoutMap->mapKey(
+                    scanCode, usageCode, outKeycode, outFlags)) {
+                return NO_ERROR;
+            }
+        }
+    }
+
+    *outKeycode = 0;
+    *outFlags = 0;
+    return NAME_NOT_FOUND;
+}
+
+status_t EventHub::mapAxis(int32_t deviceId, int32_t scanCode, AxisInfo* outAxisInfo) const {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+
+    if (device && device->keyMap.haveKeyLayout()) {
+        status_t err = device->keyMap.keyLayoutMap->mapAxis(scanCode, outAxisInfo);
+        if (err == NO_ERROR) {
+            return NO_ERROR;
+        }
+    }
+
+    return NAME_NOT_FOUND;
+}
+
+void EventHub::setExcludedDevices(const Vector<String8>& devices) {
+    AutoMutex _l(mLock);
+
+    mExcludedDevices = devices;
+}
+
+bool EventHub::hasScanCode(int32_t deviceId, int32_t scanCode) const {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    if (device && scanCode >= 0 && scanCode <= KEY_MAX) {
+        if (test_bit(scanCode, device->keyBitmask)) {
+            return true;
+        }
+    }
+    return false;
+}
+
+bool EventHub::hasLed(int32_t deviceId, int32_t led) const {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    int32_t sc;
+    if (device && mapLed(device, led, &sc) == NO_ERROR) {
+        if (test_bit(sc, device->ledBitmask)) {
+            return true;
+        }
+    }
+    return false;
+}
+
+void EventHub::setLedState(int32_t deviceId, int32_t led, bool on) {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    setLedStateLocked(device, led, on);
+}
+
+void EventHub::setLedStateLocked(Device* device, int32_t led, bool on) {
+    int32_t sc;
+    if (device && !device->isVirtual() && mapLed(device, led, &sc) != NAME_NOT_FOUND) {
+        struct input_event ev;
+        ev.time.tv_sec = 0;
+        ev.time.tv_usec = 0;
+        ev.type = EV_LED;
+        ev.code = sc;
+        ev.value = on ? 1 : 0;
+
+        ssize_t nWrite;
+        do {
+            nWrite = write(device->fd, &ev, sizeof(struct input_event));
+        } while (nWrite == -1 && errno == EINTR);
+    }
+}
+
+void EventHub::getVirtualKeyDefinitions(int32_t deviceId,
+        Vector<VirtualKeyDefinition>& outVirtualKeys) const {
+    outVirtualKeys.clear();
+
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    if (device && device->virtualKeyMap) {
+        outVirtualKeys.appendVector(device->virtualKeyMap->getVirtualKeys());
+    }
+}
+
+sp<KeyCharacterMap> EventHub::getKeyCharacterMap(int32_t deviceId) const {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    if (device) {
+        return device->getKeyCharacterMap();
+    }
+    return NULL;
+}
+
+bool EventHub::setKeyboardLayoutOverlay(int32_t deviceId,
+        const sp<KeyCharacterMap>& map) {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    if (device) {
+        if (map != device->overlayKeyMap) {
+            device->overlayKeyMap = map;
+            device->combinedKeyMap = KeyCharacterMap::combine(
+                    device->keyMap.keyCharacterMap, map);
+            return true;
+        }
+    }
+    return false;
+}
+
+static String8 generateDescriptor(InputDeviceIdentifier& identifier) {
+    String8 rawDescriptor;
+    rawDescriptor.appendFormat(":%04x:%04x:", identifier.vendor,
+            identifier.product);
+    // TODO add handling for USB devices to not uniqueify kbs that show up twice
+    if (!identifier.uniqueId.isEmpty()) {
+        rawDescriptor.append("uniqueId:");
+        rawDescriptor.append(identifier.uniqueId);
+    } else if (identifier.nonce != 0) {
+        rawDescriptor.appendFormat("nonce:%04x", identifier.nonce);
+    }
+
+    if (identifier.vendor == 0 && identifier.product == 0) {
+        // If we don't know the vendor and product id, then the device is probably
+        // built-in so we need to rely on other information to uniquely identify
+        // the input device.  Usually we try to avoid relying on the device name or
+        // location but for built-in input device, they are unlikely to ever change.
+        if (!identifier.name.isEmpty()) {
+            rawDescriptor.append("name:");
+            rawDescriptor.append(identifier.name);
+        } else if (!identifier.location.isEmpty()) {
+            rawDescriptor.append("location:");
+            rawDescriptor.append(identifier.location);
+        }
+    }
+    identifier.descriptor = sha1(rawDescriptor);
+    return rawDescriptor;
+}
+
+void EventHub::assignDescriptorLocked(InputDeviceIdentifier& identifier) {
+    // Compute a device descriptor that uniquely identifies the device.
+    // The descriptor is assumed to be a stable identifier.  Its value should not
+    // change between reboots, reconnections, firmware updates or new releases
+    // of Android. In practice we sometimes get devices that cannot be uniquely
+    // identified. In this case we enforce uniqueness between connected devices.
+    // Ideally, we also want the descriptor to be short and relatively opaque.
+
+    identifier.nonce = 0;
+    String8 rawDescriptor = generateDescriptor(identifier);
+    if (identifier.uniqueId.isEmpty()) {
+        // If it didn't have a unique id check for conflicts and enforce
+        // uniqueness if necessary.
+        while(getDeviceByDescriptorLocked(identifier.descriptor) != NULL) {
+            identifier.nonce++;
+            rawDescriptor = generateDescriptor(identifier);
+        }
+    }
+    ALOGV("Created descriptor: raw=%s, cooked=%s", rawDescriptor.string(),
+            identifier.descriptor.string());
+}
+
+void EventHub::vibrate(int32_t deviceId, nsecs_t duration) {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    if (device && !device->isVirtual()) {
+        ff_effect effect;
+        memset(&effect, 0, sizeof(effect));
+        effect.type = FF_RUMBLE;
+        effect.id = device->ffEffectId;
+        effect.u.rumble.strong_magnitude = 0xc000;
+        effect.u.rumble.weak_magnitude = 0xc000;
+        effect.replay.length = (duration + 999999LL) / 1000000LL;
+        effect.replay.delay = 0;
+        if (ioctl(device->fd, EVIOCSFF, &effect)) {
+            ALOGW("Could not upload force feedback effect to device %s due to error %d.",
+                    device->identifier.name.string(), errno);
+            return;
+        }
+        device->ffEffectId = effect.id;
+
+        struct input_event ev;
+        ev.time.tv_sec = 0;
+        ev.time.tv_usec = 0;
+        ev.type = EV_FF;
+        ev.code = device->ffEffectId;
+        ev.value = 1;
+        if (write(device->fd, &ev, sizeof(ev)) != sizeof(ev)) {
+            ALOGW("Could not start force feedback effect on device %s due to error %d.",
+                    device->identifier.name.string(), errno);
+            return;
+        }
+        device->ffEffectPlaying = true;
+    }
+}
+
+void EventHub::cancelVibrate(int32_t deviceId) {
+    AutoMutex _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    if (device && !device->isVirtual()) {
+        if (device->ffEffectPlaying) {
+            device->ffEffectPlaying = false;
+
+            struct input_event ev;
+            ev.time.tv_sec = 0;
+            ev.time.tv_usec = 0;
+            ev.type = EV_FF;
+            ev.code = device->ffEffectId;
+            ev.value = 0;
+            if (write(device->fd, &ev, sizeof(ev)) != sizeof(ev)) {
+                ALOGW("Could not stop force feedback effect on device %s due to error %d.",
+                        device->identifier.name.string(), errno);
+                return;
+            }
+        }
+    }
+}
+
+EventHub::Device* EventHub::getDeviceByDescriptorLocked(String8& descriptor) const {
+    size_t size = mDevices.size();
+    for (size_t i = 0; i < size; i++) {
+        Device* device = mDevices.valueAt(i);
+        if (descriptor.compare(device->identifier.descriptor) == 0) {
+            return device;
+        }
+    }
+    return NULL;
+}
+
+EventHub::Device* EventHub::getDeviceLocked(int32_t deviceId) const {
+    if (deviceId == BUILT_IN_KEYBOARD_ID) {
+        deviceId = mBuiltInKeyboardId;
+    }
+    ssize_t index = mDevices.indexOfKey(deviceId);
+    return index >= 0 ? mDevices.valueAt(index) : NULL;
+}
+
+EventHub::Device* EventHub::getDeviceByPathLocked(const char* devicePath) const {
+    for (size_t i = 0; i < mDevices.size(); i++) {
+        Device* device = mDevices.valueAt(i);
+        if (device->path == devicePath) {
+            return device;
+        }
+    }
+    return NULL;
+}
+
+size_t EventHub::getEvents(int timeoutMillis, RawEvent* buffer, size_t bufferSize) {
+    ALOG_ASSERT(bufferSize >= 1);
+
+    AutoMutex _l(mLock);
+
+    struct input_event readBuffer[bufferSize];
+
+    RawEvent* event = buffer;
+    size_t capacity = bufferSize;
+    bool awoken = false;
+    for (;;) {
+        nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);
+
+        // Reopen input devices if needed.
+        if (mNeedToReopenDevices) {
+            mNeedToReopenDevices = false;
+
+            ALOGI("Reopening all input devices due to a configuration change.");
+
+            closeAllDevicesLocked();
+            mNeedToScanDevices = true;
+            break; // return to the caller before we actually rescan
+        }
+
+        // Report any devices that had last been added/removed.
+        while (mClosingDevices) {
+            Device* device = mClosingDevices;
+            ALOGV("Reporting device closed: id=%d, name=%s\n",
+                 device->id, device->path.string());
+            mClosingDevices = device->next;
+            event->when = now;
+            event->deviceId = device->id == mBuiltInKeyboardId ? BUILT_IN_KEYBOARD_ID : device->id;
+            event->type = DEVICE_REMOVED;
+            event += 1;
+            delete device;
+            mNeedToSendFinishedDeviceScan = true;
+            if (--capacity == 0) {
+                break;
+            }
+        }
+
+        if (mNeedToScanDevices) {
+            mNeedToScanDevices = false;
+            scanDevicesLocked();
+            mNeedToSendFinishedDeviceScan = true;
+        }
+
+        while (mOpeningDevices != NULL) {
+            Device* device = mOpeningDevices;
+            ALOGV("Reporting device opened: id=%d, name=%s\n",
+                 device->id, device->path.string());
+            mOpeningDevices = device->next;
+            event->when = now;
+            event->deviceId = device->id == mBuiltInKeyboardId ? 0 : device->id;
+            event->type = DEVICE_ADDED;
+            event += 1;
+            mNeedToSendFinishedDeviceScan = true;
+            if (--capacity == 0) {
+                break;
+            }
+        }
+
+        if (mNeedToSendFinishedDeviceScan) {
+            mNeedToSendFinishedDeviceScan = false;
+            event->when = now;
+            event->type = FINISHED_DEVICE_SCAN;
+            event += 1;
+            if (--capacity == 0) {
+                break;
+            }
+        }
+
+        // Grab the next input event.
+        bool deviceChanged = false;
+        while (mPendingEventIndex < mPendingEventCount) {
+            const struct epoll_event& eventItem = mPendingEventItems[mPendingEventIndex++];
+            if (eventItem.data.u32 == EPOLL_ID_INOTIFY) {
+                if (eventItem.events & EPOLLIN) {
+                    mPendingINotify = true;
+                } else {
+                    ALOGW("Received unexpected epoll event 0x%08x for INotify.", eventItem.events);
+                }
+                continue;
+            }
+
+            if (eventItem.data.u32 == EPOLL_ID_WAKE) {
+                if (eventItem.events & EPOLLIN) {
+                    ALOGV("awoken after wake()");
+                    awoken = true;
+                    char buffer[16];
+                    ssize_t nRead;
+                    do {
+                        nRead = read(mWakeReadPipeFd, buffer, sizeof(buffer));
+                    } while ((nRead == -1 && errno == EINTR) || nRead == sizeof(buffer));
+                } else {
+                    ALOGW("Received unexpected epoll event 0x%08x for wake read pipe.",
+                            eventItem.events);
+                }
+                continue;
+            }
+
+            ssize_t deviceIndex = mDevices.indexOfKey(eventItem.data.u32);
+            if (deviceIndex < 0) {
+                ALOGW("Received unexpected epoll event 0x%08x for unknown device id %d.",
+                        eventItem.events, eventItem.data.u32);
+                continue;
+            }
+
+            Device* device = mDevices.valueAt(deviceIndex);
+            if (eventItem.events & EPOLLIN) {
+                int32_t readSize = read(device->fd, readBuffer,
+                        sizeof(struct input_event) * capacity);
+                if (readSize == 0 || (readSize < 0 && errno == ENODEV)) {
+                    // Device was removed before INotify noticed.
+                    ALOGW("could not get event, removed? (fd: %d size: %d bufferSize: %d "
+                            "capacity: %d errno: %d)\n",
+                            device->fd, readSize, bufferSize, capacity, errno);
+                    deviceChanged = true;
+                    closeDeviceLocked(device);
+                } else if (readSize < 0) {
+                    if (errno != EAGAIN && errno != EINTR) {
+                        ALOGW("could not get event (errno=%d)", errno);
+                    }
+                } else if ((readSize % sizeof(struct input_event)) != 0) {
+                    ALOGE("could not get event (wrong size: %d)", readSize);
+                } else {
+                    int32_t deviceId = device->id == mBuiltInKeyboardId ? 0 : device->id;
+
+                    size_t count = size_t(readSize) / sizeof(struct input_event);
+                    for (size_t i = 0; i < count; i++) {
+                        struct input_event& iev = readBuffer[i];
+                        ALOGV("%s got: time=%d.%06d, type=%d, code=%d, value=%d",
+                                device->path.string(),
+                                (int) iev.time.tv_sec, (int) iev.time.tv_usec,
+                                iev.type, iev.code, iev.value);
+
+                        // Some input devices may have a better concept of the time
+                        // when an input event was actually generated than the kernel
+                        // which simply timestamps all events on entry to evdev.
+                        // This is a custom Android extension of the input protocol
+                        // mainly intended for use with uinput based device drivers.
+                        if (iev.type == EV_MSC) {
+                            if (iev.code == MSC_ANDROID_TIME_SEC) {
+                                device->timestampOverrideSec = iev.value;
+                                continue;
+                            } else if (iev.code == MSC_ANDROID_TIME_USEC) {
+                                device->timestampOverrideUsec = iev.value;
+                                continue;
+                            }
+                        }
+                        if (device->timestampOverrideSec || device->timestampOverrideUsec) {
+                            iev.time.tv_sec = device->timestampOverrideSec;
+                            iev.time.tv_usec = device->timestampOverrideUsec;
+                            if (iev.type == EV_SYN && iev.code == SYN_REPORT) {
+                                device->timestampOverrideSec = 0;
+                                device->timestampOverrideUsec = 0;
+                            }
+                            ALOGV("applied override time %d.%06d",
+                                    int(iev.time.tv_sec), int(iev.time.tv_usec));
+                        }
+
+#ifdef HAVE_POSIX_CLOCKS
+                        // Use the time specified in the event instead of the current time
+                        // so that downstream code can get more accurate estimates of
+                        // event dispatch latency from the time the event is enqueued onto
+                        // the evdev client buffer.
+                        //
+                        // The event's timestamp fortuitously uses the same monotonic clock
+                        // time base as the rest of Android.  The kernel event device driver
+                        // (drivers/input/evdev.c) obtains timestamps using ktime_get_ts().
+                        // The systemTime(SYSTEM_TIME_MONOTONIC) function we use everywhere
+                        // calls clock_gettime(CLOCK_MONOTONIC) which is implemented as a
+                        // system call that also queries ktime_get_ts().
+                        event->when = nsecs_t(iev.time.tv_sec) * 1000000000LL
+                                + nsecs_t(iev.time.tv_usec) * 1000LL;
+                        ALOGV("event time %lld, now %lld", event->when, now);
+
+                        // Bug 7291243: Add a guard in case the kernel generates timestamps
+                        // that appear to be far into the future because they were generated
+                        // using the wrong clock source.
+                        //
+                        // This can happen because when the input device is initially opened
+                        // it has a default clock source of CLOCK_REALTIME.  Any input events
+                        // enqueued right after the device is opened will have timestamps
+                        // generated using CLOCK_REALTIME.  We later set the clock source
+                        // to CLOCK_MONOTONIC but it is already too late.
+                        //
+                        // Invalid input event timestamps can result in ANRs, crashes and
+                        // and other issues that are hard to track down.  We must not let them
+                        // propagate through the system.
+                        //
+                        // Log a warning so that we notice the problem and recover gracefully.
+                        if (event->when >= now + 10 * 1000000000LL) {
+                            // Double-check.  Time may have moved on.
+                            nsecs_t time = systemTime(SYSTEM_TIME_MONOTONIC);
+                            if (event->when > time) {
+                                ALOGW("An input event from %s has a timestamp that appears to "
+                                        "have been generated using the wrong clock source "
+                                        "(expected CLOCK_MONOTONIC): "
+                                        "event time %lld, current time %lld, call time %lld.  "
+                                        "Using current time instead.",
+                                        device->path.string(), event->when, time, now);
+                                event->when = time;
+                            } else {
+                                ALOGV("Event time is ok but failed the fast path and required "
+                                        "an extra call to systemTime: "
+                                        "event time %lld, current time %lld, call time %lld.",
+                                        event->when, time, now);
+                            }
+                        }
+#else
+                        event->when = now;
+#endif
+                        event->deviceId = deviceId;
+                        event->type = iev.type;
+                        event->code = iev.code;
+                        event->value = iev.value;
+                        event += 1;
+                        capacity -= 1;
+                    }
+                    if (capacity == 0) {
+                        // The result buffer is full.  Reset the pending event index
+                        // so we will try to read the device again on the next iteration.
+                        mPendingEventIndex -= 1;
+                        break;
+                    }
+                }
+            } else if (eventItem.events & EPOLLHUP) {
+                ALOGI("Removing device %s due to epoll hang-up event.",
+                        device->identifier.name.string());
+                deviceChanged = true;
+                closeDeviceLocked(device);
+            } else {
+                ALOGW("Received unexpected epoll event 0x%08x for device %s.",
+                        eventItem.events, device->identifier.name.string());
+            }
+        }
+
+        // readNotify() will modify the list of devices so this must be done after
+        // processing all other events to ensure that we read all remaining events
+        // before closing the devices.
+        if (mPendingINotify && mPendingEventIndex >= mPendingEventCount) {
+            mPendingINotify = false;
+            readNotifyLocked();
+            deviceChanged = true;
+        }
+
+        // Report added or removed devices immediately.
+        if (deviceChanged) {
+            continue;
+        }
+
+        // Return now if we have collected any events or if we were explicitly awoken.
+        if (event != buffer || awoken) {
+            break;
+        }
+
+        // Poll for events.  Mind the wake lock dance!
+        // We hold a wake lock at all times except during epoll_wait().  This works due to some
+        // subtle choreography.  When a device driver has pending (unread) events, it acquires
+        // a kernel wake lock.  However, once the last pending event has been read, the device
+        // driver will release the kernel wake lock.  To prevent the system from going to sleep
+        // when this happens, the EventHub holds onto its own user wake lock while the client
+        // is processing events.  Thus the system can only sleep if there are no events
+        // pending or currently being processed.
+        //
+        // The timeout is advisory only.  If the device is asleep, it will not wake just to
+        // service the timeout.
+        mPendingEventIndex = 0;
+
+        mLock.unlock(); // release lock before poll, must be before release_wake_lock
+        release_wake_lock(WAKE_LOCK_ID);
+
+        int pollResult = epoll_wait(mEpollFd, mPendingEventItems, EPOLL_MAX_EVENTS, timeoutMillis);
+
+        acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID);
+        mLock.lock(); // reacquire lock after poll, must be after acquire_wake_lock
+
+        if (pollResult == 0) {
+            // Timed out.
+            mPendingEventCount = 0;
+            break;
+        }
+
+        if (pollResult < 0) {
+            // An error occurred.
+            mPendingEventCount = 0;
+
+            // Sleep after errors to avoid locking up the system.
+            // Hopefully the error is transient.
+            if (errno != EINTR) {
+                ALOGW("poll failed (errno=%d)\n", errno);
+                usleep(100000);
+            }
+        } else {
+            // Some events occurred.
+            mPendingEventCount = size_t(pollResult);
+        }
+    }
+
+    // All done, return the number of events we read.
+    return event - buffer;
+}
+
+void EventHub::wake() {
+    ALOGV("wake() called");
+
+    ssize_t nWrite;
+    do {
+        nWrite = write(mWakeWritePipeFd, "W", 1);
+    } while (nWrite == -1 && errno == EINTR);
+
+    if (nWrite != 1 && errno != EAGAIN) {
+        ALOGW("Could not write wake signal, errno=%d", errno);
+    }
+}
+
+void EventHub::scanDevicesLocked() {
+    status_t res = scanDirLocked(DEVICE_PATH);
+    if(res < 0) {
+        ALOGE("scan dir failed for %s\n", DEVICE_PATH);
+    }
+    if (mDevices.indexOfKey(VIRTUAL_KEYBOARD_ID) < 0) {
+        createVirtualKeyboardLocked();
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+static bool containsNonZeroByte(const uint8_t* array, uint32_t startIndex, uint32_t endIndex) {
+    const uint8_t* end = array + endIndex;
+    array += startIndex;
+    while (array != end) {
+        if (*(array++) != 0) {
+            return true;
+        }
+    }
+    return false;
+}
+
+static const int32_t GAMEPAD_KEYCODES[] = {
+        AKEYCODE_BUTTON_A, AKEYCODE_BUTTON_B, AKEYCODE_BUTTON_C,
+        AKEYCODE_BUTTON_X, AKEYCODE_BUTTON_Y, AKEYCODE_BUTTON_Z,
+        AKEYCODE_BUTTON_L1, AKEYCODE_BUTTON_R1,
+        AKEYCODE_BUTTON_L2, AKEYCODE_BUTTON_R2,
+        AKEYCODE_BUTTON_THUMBL, AKEYCODE_BUTTON_THUMBR,
+        AKEYCODE_BUTTON_START, AKEYCODE_BUTTON_SELECT, AKEYCODE_BUTTON_MODE,
+        AKEYCODE_BUTTON_1, AKEYCODE_BUTTON_2, AKEYCODE_BUTTON_3, AKEYCODE_BUTTON_4,
+        AKEYCODE_BUTTON_5, AKEYCODE_BUTTON_6, AKEYCODE_BUTTON_7, AKEYCODE_BUTTON_8,
+        AKEYCODE_BUTTON_9, AKEYCODE_BUTTON_10, AKEYCODE_BUTTON_11, AKEYCODE_BUTTON_12,
+        AKEYCODE_BUTTON_13, AKEYCODE_BUTTON_14, AKEYCODE_BUTTON_15, AKEYCODE_BUTTON_16,
+};
+
+status_t EventHub::openDeviceLocked(const char *devicePath) {
+    char buffer[80];
+
+    ALOGV("Opening device: %s", devicePath);
+
+    int fd = open(devicePath, O_RDWR | O_CLOEXEC);
+    if(fd < 0) {
+        ALOGE("could not open %s, %s\n", devicePath, strerror(errno));
+        return -1;
+    }
+
+    InputDeviceIdentifier identifier;
+
+    // Get device name.
+    if(ioctl(fd, EVIOCGNAME(sizeof(buffer) - 1), &buffer) < 1) {
+        //fprintf(stderr, "could not get device name for %s, %s\n", devicePath, strerror(errno));
+    } else {
+        buffer[sizeof(buffer) - 1] = '\0';
+        identifier.name.setTo(buffer);
+    }
+
+    // Check to see if the device is on our excluded list
+    for (size_t i = 0; i < mExcludedDevices.size(); i++) {
+        const String8& item = mExcludedDevices.itemAt(i);
+        if (identifier.name == item) {
+            ALOGI("ignoring event id %s driver %s\n", devicePath, item.string());
+            close(fd);
+            return -1;
+        }
+    }
+
+    // Get device driver version.
+    int driverVersion;
+    if(ioctl(fd, EVIOCGVERSION, &driverVersion)) {
+        ALOGE("could not get driver version for %s, %s\n", devicePath, strerror(errno));
+        close(fd);
+        return -1;
+    }
+
+    // Get device identifier.
+    struct input_id inputId;
+    if(ioctl(fd, EVIOCGID, &inputId)) {
+        ALOGE("could not get device input id for %s, %s\n", devicePath, strerror(errno));
+        close(fd);
+        return -1;
+    }
+    identifier.bus = inputId.bustype;
+    identifier.product = inputId.product;
+    identifier.vendor = inputId.vendor;
+    identifier.version = inputId.version;
+
+    // Get device physical location.
+    if(ioctl(fd, EVIOCGPHYS(sizeof(buffer) - 1), &buffer) < 1) {
+        //fprintf(stderr, "could not get location for %s, %s\n", devicePath, strerror(errno));
+    } else {
+        buffer[sizeof(buffer) - 1] = '\0';
+        identifier.location.setTo(buffer);
+    }
+
+    // Get device unique id.
+    if(ioctl(fd, EVIOCGUNIQ(sizeof(buffer) - 1), &buffer) < 1) {
+        //fprintf(stderr, "could not get idstring for %s, %s\n", devicePath, strerror(errno));
+    } else {
+        buffer[sizeof(buffer) - 1] = '\0';
+        identifier.uniqueId.setTo(buffer);
+    }
+
+    // Fill in the descriptor.
+    assignDescriptorLocked(identifier);
+
+    // Make file descriptor non-blocking for use with poll().
+    if (fcntl(fd, F_SETFL, O_NONBLOCK)) {
+        ALOGE("Error %d making device file descriptor non-blocking.", errno);
+        close(fd);
+        return -1;
+    }
+
+    // Allocate device.  (The device object takes ownership of the fd at this point.)
+    int32_t deviceId = mNextDeviceId++;
+    Device* device = new Device(fd, deviceId, String8(devicePath), identifier);
+
+    ALOGV("add device %d: %s\n", deviceId, devicePath);
+    ALOGV("  bus:        %04x\n"
+         "  vendor      %04x\n"
+         "  product     %04x\n"
+         "  version     %04x\n",
+        identifier.bus, identifier.vendor, identifier.product, identifier.version);
+    ALOGV("  name:       \"%s\"\n", identifier.name.string());
+    ALOGV("  location:   \"%s\"\n", identifier.location.string());
+    ALOGV("  unique id:  \"%s\"\n", identifier.uniqueId.string());
+    ALOGV("  descriptor: \"%s\"\n", identifier.descriptor.string());
+    ALOGV("  driver:     v%d.%d.%d\n",
+        driverVersion >> 16, (driverVersion >> 8) & 0xff, driverVersion & 0xff);
+
+    // Load the configuration file for the device.
+    loadConfigurationLocked(device);
+
+    // Figure out the kinds of events the device reports.
+    ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(device->keyBitmask)), device->keyBitmask);
+    ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(device->absBitmask)), device->absBitmask);
+    ioctl(fd, EVIOCGBIT(EV_REL, sizeof(device->relBitmask)), device->relBitmask);
+    ioctl(fd, EVIOCGBIT(EV_SW, sizeof(device->swBitmask)), device->swBitmask);
+    ioctl(fd, EVIOCGBIT(EV_LED, sizeof(device->ledBitmask)), device->ledBitmask);
+    ioctl(fd, EVIOCGBIT(EV_FF, sizeof(device->ffBitmask)), device->ffBitmask);
+    ioctl(fd, EVIOCGPROP(sizeof(device->propBitmask)), device->propBitmask);
+
+    // See if this is a keyboard.  Ignore everything in the button range except for
+    // joystick and gamepad buttons which are handled like keyboards for the most part.
+    bool haveKeyboardKeys = containsNonZeroByte(device->keyBitmask, 0, sizeof_bit_array(BTN_MISC))
+            || containsNonZeroByte(device->keyBitmask, sizeof_bit_array(KEY_OK),
+                    sizeof_bit_array(KEY_MAX + 1));
+    bool haveGamepadButtons = containsNonZeroByte(device->keyBitmask, sizeof_bit_array(BTN_MISC),
+                    sizeof_bit_array(BTN_MOUSE))
+            || containsNonZeroByte(device->keyBitmask, sizeof_bit_array(BTN_JOYSTICK),
+                    sizeof_bit_array(BTN_DIGI));
+    if (haveKeyboardKeys || haveGamepadButtons) {
+        device->classes |= INPUT_DEVICE_CLASS_KEYBOARD;
+    }
+
+    // See if this is a cursor device such as a trackball or mouse.
+    if (test_bit(BTN_MOUSE, device->keyBitmask)
+            && test_bit(REL_X, device->relBitmask)
+            && test_bit(REL_Y, device->relBitmask)) {
+        device->classes |= INPUT_DEVICE_CLASS_CURSOR;
+    }
+
+    // See if this is a touch pad.
+    // Is this a new modern multi-touch driver?
+    if (test_bit(ABS_MT_POSITION_X, device->absBitmask)
+            && test_bit(ABS_MT_POSITION_Y, device->absBitmask)) {
+        // Some joysticks such as the PS3 controller report axes that conflict
+        // with the ABS_MT range.  Try to confirm that the device really is
+        // a touch screen.
+        if (test_bit(BTN_TOUCH, device->keyBitmask) || !haveGamepadButtons) {
+            device->classes |= INPUT_DEVICE_CLASS_TOUCH | INPUT_DEVICE_CLASS_TOUCH_MT;
+        }
+    // Is this an old style single-touch driver?
+    } else if (test_bit(BTN_TOUCH, device->keyBitmask)
+            && test_bit(ABS_X, device->absBitmask)
+            && test_bit(ABS_Y, device->absBitmask)) {
+        device->classes |= INPUT_DEVICE_CLASS_TOUCH;
+    }
+
+    // See if this device is a joystick.
+    // Assumes that joysticks always have gamepad buttons in order to distinguish them
+    // from other devices such as accelerometers that also have absolute axes.
+    if (haveGamepadButtons) {
+        uint32_t assumedClasses = device->classes | INPUT_DEVICE_CLASS_JOYSTICK;
+        for (int i = 0; i <= ABS_MAX; i++) {
+            if (test_bit(i, device->absBitmask)
+                    && (getAbsAxisUsage(i, assumedClasses) & INPUT_DEVICE_CLASS_JOYSTICK)) {
+                device->classes = assumedClasses;
+                break;
+            }
+        }
+    }
+
+    // Check whether this device has switches.
+    for (int i = 0; i <= SW_MAX; i++) {
+        if (test_bit(i, device->swBitmask)) {
+            device->classes |= INPUT_DEVICE_CLASS_SWITCH;
+            break;
+        }
+    }
+
+    // Check whether this device supports the vibrator.
+    if (test_bit(FF_RUMBLE, device->ffBitmask)) {
+        device->classes |= INPUT_DEVICE_CLASS_VIBRATOR;
+    }
+
+    // Configure virtual keys.
+    if ((device->classes & INPUT_DEVICE_CLASS_TOUCH)) {
+        // Load the virtual keys for the touch screen, if any.
+        // We do this now so that we can make sure to load the keymap if necessary.
+        status_t status = loadVirtualKeyMapLocked(device);
+        if (!status) {
+            device->classes |= INPUT_DEVICE_CLASS_KEYBOARD;
+        }
+    }
+
+    // Load the key map.
+    // We need to do this for joysticks too because the key layout may specify axes.
+    status_t keyMapStatus = NAME_NOT_FOUND;
+    if (device->classes & (INPUT_DEVICE_CLASS_KEYBOARD | INPUT_DEVICE_CLASS_JOYSTICK)) {
+        // Load the keymap for the device.
+        keyMapStatus = loadKeyMapLocked(device);
+    }
+
+    // Configure the keyboard, gamepad or virtual keyboard.
+    if (device->classes & INPUT_DEVICE_CLASS_KEYBOARD) {
+        // Register the keyboard as a built-in keyboard if it is eligible.
+        if (!keyMapStatus
+                && mBuiltInKeyboardId == NO_BUILT_IN_KEYBOARD
+                && isEligibleBuiltInKeyboard(device->identifier,
+                        device->configuration, &device->keyMap)) {
+            mBuiltInKeyboardId = device->id;
+        }
+
+        // 'Q' key support = cheap test of whether this is an alpha-capable kbd
+        if (hasKeycodeLocked(device, AKEYCODE_Q)) {
+            device->classes |= INPUT_DEVICE_CLASS_ALPHAKEY;
+        }
+
+        // See if this device has a DPAD.
+        if (hasKeycodeLocked(device, AKEYCODE_DPAD_UP) &&
+                hasKeycodeLocked(device, AKEYCODE_DPAD_DOWN) &&
+                hasKeycodeLocked(device, AKEYCODE_DPAD_LEFT) &&
+                hasKeycodeLocked(device, AKEYCODE_DPAD_RIGHT) &&
+                hasKeycodeLocked(device, AKEYCODE_DPAD_CENTER)) {
+            device->classes |= INPUT_DEVICE_CLASS_DPAD;
+        }
+
+        // See if this device has a gamepad.
+        for (size_t i = 0; i < sizeof(GAMEPAD_KEYCODES)/sizeof(GAMEPAD_KEYCODES[0]); i++) {
+            if (hasKeycodeLocked(device, GAMEPAD_KEYCODES[i])) {
+                device->classes |= INPUT_DEVICE_CLASS_GAMEPAD;
+                break;
+            }
+        }
+
+        // Disable kernel key repeat since we handle it ourselves
+        unsigned int repeatRate[] = {0,0};
+        if (ioctl(fd, EVIOCSREP, repeatRate)) {
+            ALOGW("Unable to disable kernel key repeat for %s: %s", devicePath, strerror(errno));
+        }
+    }
+
+    // If the device isn't recognized as something we handle, don't monitor it.
+    if (device->classes == 0) {
+        ALOGV("Dropping device: id=%d, path='%s', name='%s'",
+                deviceId, devicePath, device->identifier.name.string());
+        delete device;
+        return -1;
+    }
+
+    // Determine whether the device is external or internal.
+    if (isExternalDeviceLocked(device)) {
+        device->classes |= INPUT_DEVICE_CLASS_EXTERNAL;
+    }
+
+    if (device->classes & (INPUT_DEVICE_CLASS_JOYSTICK | INPUT_DEVICE_CLASS_GAMEPAD)) {
+        device->controllerNumber = getNextControllerNumberLocked(device);
+        setLedForController(device);
+    }
+
+    // Register with epoll.
+    struct epoll_event eventItem;
+    memset(&eventItem, 0, sizeof(eventItem));
+    eventItem.events = mUsingEpollWakeup ? EPOLLIN : EPOLLIN | EPOLLWAKEUP;
+    eventItem.data.u32 = deviceId;
+    if (epoll_ctl(mEpollFd, EPOLL_CTL_ADD, fd, &eventItem)) {
+        ALOGE("Could not add device fd to epoll instance.  errno=%d", errno);
+        delete device;
+        return -1;
+    }
+
+    String8 wakeMechanism("EPOLLWAKEUP");
+    if (!mUsingEpollWakeup) {
+#ifndef EVIOCSSUSPENDBLOCK
+        // uapi headers don't include EVIOCSSUSPENDBLOCK, and future kernels
+        // will use an epoll flag instead, so as long as we want to support
+        // this feature, we need to be prepared to define the ioctl ourselves.
+#define EVIOCSSUSPENDBLOCK _IOW('E', 0x91, int)
+#endif
+        if (ioctl(fd, EVIOCSSUSPENDBLOCK, 1)) {
+            wakeMechanism = "<none>";
+        } else {
+            wakeMechanism = "EVIOCSSUSPENDBLOCK";
+        }
+    }
+
+    // Tell the kernel that we want to use the monotonic clock for reporting timestamps
+    // associated with input events.  This is important because the input system
+    // uses the timestamps extensively and assumes they were recorded using the monotonic
+    // clock.
+    //
+    // In older kernel, before Linux 3.4, there was no way to tell the kernel which
+    // clock to use to input event timestamps.  The standard kernel behavior was to
+    // record a real time timestamp, which isn't what we want.  Android kernels therefore
+    // contained a patch to the evdev_event() function in drivers/input/evdev.c to
+    // replace the call to do_gettimeofday() with ktime_get_ts() to cause the monotonic
+    // clock to be used instead of the real time clock.
+    //
+    // As of Linux 3.4, there is a new EVIOCSCLOCKID ioctl to set the desired clock.
+    // Therefore, we no longer require the Android-specific kernel patch described above
+    // as long as we make sure to set select the monotonic clock.  We do that here.
+    int clockId = CLOCK_MONOTONIC;
+    bool usingClockIoctl = !ioctl(fd, EVIOCSCLOCKID, &clockId);
+
+    ALOGI("New device: id=%d, fd=%d, path='%s', name='%s', classes=0x%x, "
+            "configuration='%s', keyLayout='%s', keyCharacterMap='%s', builtinKeyboard=%s, "
+            "wakeMechanism=%s, usingClockIoctl=%s",
+         deviceId, fd, devicePath, device->identifier.name.string(),
+         device->classes,
+         device->configurationFile.string(),
+         device->keyMap.keyLayoutFile.string(),
+         device->keyMap.keyCharacterMapFile.string(),
+         toString(mBuiltInKeyboardId == deviceId),
+         wakeMechanism.string(), toString(usingClockIoctl));
+
+    addDeviceLocked(device);
+    return 0;
+}
+
+void EventHub::createVirtualKeyboardLocked() {
+    InputDeviceIdentifier identifier;
+    identifier.name = "Virtual";
+    identifier.uniqueId = "<virtual>";
+    assignDescriptorLocked(identifier);
+
+    Device* device = new Device(-1, VIRTUAL_KEYBOARD_ID, String8("<virtual>"), identifier);
+    device->classes = INPUT_DEVICE_CLASS_KEYBOARD
+            | INPUT_DEVICE_CLASS_ALPHAKEY
+            | INPUT_DEVICE_CLASS_DPAD
+            | INPUT_DEVICE_CLASS_VIRTUAL;
+    loadKeyMapLocked(device);
+    addDeviceLocked(device);
+}
+
+void EventHub::addDeviceLocked(Device* device) {
+    mDevices.add(device->id, device);
+    device->next = mOpeningDevices;
+    mOpeningDevices = device;
+}
+
+void EventHub::loadConfigurationLocked(Device* device) {
+    device->configurationFile = getInputDeviceConfigurationFilePathByDeviceIdentifier(
+            device->identifier, INPUT_DEVICE_CONFIGURATION_FILE_TYPE_CONFIGURATION);
+    if (device->configurationFile.isEmpty()) {
+        ALOGD("No input device configuration file found for device '%s'.",
+                device->identifier.name.string());
+    } else {
+        status_t status = PropertyMap::load(device->configurationFile,
+                &device->configuration);
+        if (status) {
+            ALOGE("Error loading input device configuration file for device '%s'.  "
+                    "Using default configuration.",
+                    device->identifier.name.string());
+        }
+    }
+}
+
+status_t EventHub::loadVirtualKeyMapLocked(Device* device) {
+    // The virtual key map is supplied by the kernel as a system board property file.
+    String8 path;
+    path.append("/sys/board_properties/virtualkeys.");
+    path.append(device->identifier.name);
+    if (access(path.string(), R_OK)) {
+        return NAME_NOT_FOUND;
+    }
+    return VirtualKeyMap::load(path, &device->virtualKeyMap);
+}
+
+status_t EventHub::loadKeyMapLocked(Device* device) {
+    return device->keyMap.load(device->identifier, device->configuration);
+}
+
+bool EventHub::isExternalDeviceLocked(Device* device) {
+    if (device->configuration) {
+        bool value;
+        if (device->configuration->tryGetProperty(String8("device.internal"), value)) {
+            return !value;
+        }
+    }
+    return device->identifier.bus == BUS_USB || device->identifier.bus == BUS_BLUETOOTH;
+}
+
+int32_t EventHub::getNextControllerNumberLocked(Device* device) {
+    if (mControllerNumbers.isFull()) {
+        ALOGI("Maximum number of controllers reached, assigning controller number 0 to device %s",
+                device->identifier.name.string());
+        return 0;
+    }
+    // Since the controller number 0 is reserved for non-controllers, translate all numbers up by
+    // one
+    return static_cast<int32_t>(mControllerNumbers.markFirstUnmarkedBit() + 1);
+}
+
+void EventHub::releaseControllerNumberLocked(Device* device) {
+    int32_t num = device->controllerNumber;
+    device->controllerNumber= 0;
+    if (num == 0) {
+        return;
+    }
+    mControllerNumbers.clearBit(static_cast<uint32_t>(num - 1));
+}
+
+void EventHub::setLedForController(Device* device) {
+    for (int i = 0; i < MAX_CONTROLLER_LEDS; i++) {
+        setLedStateLocked(device, ALED_CONTROLLER_1 + i, device->controllerNumber == i + 1);
+    }
+}
+
+bool EventHub::hasKeycodeLocked(Device* device, int keycode) const {
+    if (!device->keyMap.haveKeyLayout() || !device->keyBitmask) {
+        return false;
+    }
+    
+    Vector<int32_t> scanCodes;
+    device->keyMap.keyLayoutMap->findScanCodesForKey(keycode, &scanCodes);
+    const size_t N = scanCodes.size();
+    for (size_t i=0; i<N && i<=KEY_MAX; i++) {
+        int32_t sc = scanCodes.itemAt(i);
+        if (sc >= 0 && sc <= KEY_MAX && test_bit(sc, device->keyBitmask)) {
+            return true;
+        }
+    }
+    
+    return false;
+}
+
+status_t EventHub::mapLed(Device* device, int32_t led, int32_t* outScanCode) const {
+    if (!device->keyMap.haveKeyLayout() || !device->ledBitmask) {
+        return NAME_NOT_FOUND;
+    }
+
+    int32_t scanCode;
+    if(device->keyMap.keyLayoutMap->findScanCodeForLed(led, &scanCode) != NAME_NOT_FOUND) {
+        if(scanCode >= 0 && scanCode <= LED_MAX && test_bit(scanCode, device->ledBitmask)) {
+            *outScanCode = scanCode;
+            return NO_ERROR;
+        }
+    }
+    return NAME_NOT_FOUND;
+}
+
+status_t EventHub::closeDeviceByPathLocked(const char *devicePath) {
+    Device* device = getDeviceByPathLocked(devicePath);
+    if (device) {
+        closeDeviceLocked(device);
+        return 0;
+    }
+    ALOGV("Remove device: %s not found, device may already have been removed.", devicePath);
+    return -1;
+}
+
+void EventHub::closeAllDevicesLocked() {
+    while (mDevices.size() > 0) {
+        closeDeviceLocked(mDevices.valueAt(mDevices.size() - 1));
+    }
+}
+
+void EventHub::closeDeviceLocked(Device* device) {
+    ALOGI("Removed device: path=%s name=%s id=%d fd=%d classes=0x%x\n",
+         device->path.string(), device->identifier.name.string(), device->id,
+         device->fd, device->classes);
+
+    if (device->id == mBuiltInKeyboardId) {
+        ALOGW("built-in keyboard device %s (id=%d) is closing! the apps will not like this",
+                device->path.string(), mBuiltInKeyboardId);
+        mBuiltInKeyboardId = NO_BUILT_IN_KEYBOARD;
+    }
+
+    if (!device->isVirtual()) {
+        if (epoll_ctl(mEpollFd, EPOLL_CTL_DEL, device->fd, NULL)) {
+            ALOGW("Could not remove device fd from epoll instance.  errno=%d", errno);
+        }
+    }
+
+    releaseControllerNumberLocked(device);
+
+    mDevices.removeItem(device->id);
+    device->close();
+
+    // Unlink for opening devices list if it is present.
+    Device* pred = NULL;
+    bool found = false;
+    for (Device* entry = mOpeningDevices; entry != NULL; ) {
+        if (entry == device) {
+            found = true;
+            break;
+        }
+        pred = entry;
+        entry = entry->next;
+    }
+    if (found) {
+        // Unlink the device from the opening devices list then delete it.
+        // We don't need to tell the client that the device was closed because
+        // it does not even know it was opened in the first place.
+        ALOGI("Device %s was immediately closed after opening.", device->path.string());
+        if (pred) {
+            pred->next = device->next;
+        } else {
+            mOpeningDevices = device->next;
+        }
+        delete device;
+    } else {
+        // Link into closing devices list.
+        // The device will be deleted later after we have informed the client.
+        device->next = mClosingDevices;
+        mClosingDevices = device;
+    }
+}
+
+status_t EventHub::readNotifyLocked() {
+    int res;
+    char devname[PATH_MAX];
+    char *filename;
+    char event_buf[512];
+    int event_size;
+    int event_pos = 0;
+    struct inotify_event *event;
+
+    ALOGV("EventHub::readNotify nfd: %d\n", mINotifyFd);
+    res = read(mINotifyFd, event_buf, sizeof(event_buf));
+    if(res < (int)sizeof(*event)) {
+        if(errno == EINTR)
+            return 0;
+        ALOGW("could not get event, %s\n", strerror(errno));
+        return -1;
+    }
+    //printf("got %d bytes of event information\n", res);
+
+    strcpy(devname, DEVICE_PATH);
+    filename = devname + strlen(devname);
+    *filename++ = '/';
+
+    while(res >= (int)sizeof(*event)) {
+        event = (struct inotify_event *)(event_buf + event_pos);
+        //printf("%d: %08x \"%s\"\n", event->wd, event->mask, event->len ? event->name : "");
+        if(event->len) {
+            strcpy(filename, event->name);
+            if(event->mask & IN_CREATE) {
+                openDeviceLocked(devname);
+            } else {
+                ALOGI("Removing device '%s' due to inotify event\n", devname);
+                closeDeviceByPathLocked(devname);
+            }
+        }
+        event_size = sizeof(*event) + event->len;
+        res -= event_size;
+        event_pos += event_size;
+    }
+    return 0;
+}
+
+status_t EventHub::scanDirLocked(const char *dirname)
+{
+    char devname[PATH_MAX];
+    char *filename;
+    DIR *dir;
+    struct dirent *de;
+    dir = opendir(dirname);
+    if(dir == NULL)
+        return -1;
+    strcpy(devname, dirname);
+    filename = devname + strlen(devname);
+    *filename++ = '/';
+    while((de = readdir(dir))) {
+        if(de->d_name[0] == '.' &&
+           (de->d_name[1] == '\0' ||
+            (de->d_name[1] == '.' && de->d_name[2] == '\0')))
+            continue;
+        strcpy(filename, de->d_name);
+        openDeviceLocked(devname);
+    }
+    closedir(dir);
+    return 0;
+}
+
+void EventHub::requestReopenDevices() {
+    ALOGV("requestReopenDevices() called");
+
+    AutoMutex _l(mLock);
+    mNeedToReopenDevices = true;
+}
+
+void EventHub::dump(String8& dump) {
+    dump.append("Event Hub State:\n");
+
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        dump.appendFormat(INDENT "BuiltInKeyboardId: %d\n", mBuiltInKeyboardId);
+
+        dump.append(INDENT "Devices:\n");
+
+        for (size_t i = 0; i < mDevices.size(); i++) {
+            const Device* device = mDevices.valueAt(i);
+            if (mBuiltInKeyboardId == device->id) {
+                dump.appendFormat(INDENT2 "%d: %s (aka device 0 - built-in keyboard)\n",
+                        device->id, device->identifier.name.string());
+            } else {
+                dump.appendFormat(INDENT2 "%d: %s\n", device->id,
+                        device->identifier.name.string());
+            }
+            dump.appendFormat(INDENT3 "Classes: 0x%08x\n", device->classes);
+            dump.appendFormat(INDENT3 "Path: %s\n", device->path.string());
+            dump.appendFormat(INDENT3 "Descriptor: %s\n", device->identifier.descriptor.string());
+            dump.appendFormat(INDENT3 "Location: %s\n", device->identifier.location.string());
+            dump.appendFormat(INDENT3 "ControllerNumber: %d\n", device->controllerNumber);
+            dump.appendFormat(INDENT3 "UniqueId: %s\n", device->identifier.uniqueId.string());
+            dump.appendFormat(INDENT3 "Identifier: bus=0x%04x, vendor=0x%04x, "
+                    "product=0x%04x, version=0x%04x\n",
+                    device->identifier.bus, device->identifier.vendor,
+                    device->identifier.product, device->identifier.version);
+            dump.appendFormat(INDENT3 "KeyLayoutFile: %s\n",
+                    device->keyMap.keyLayoutFile.string());
+            dump.appendFormat(INDENT3 "KeyCharacterMapFile: %s\n",
+                    device->keyMap.keyCharacterMapFile.string());
+            dump.appendFormat(INDENT3 "ConfigurationFile: %s\n",
+                    device->configurationFile.string());
+            dump.appendFormat(INDENT3 "HaveKeyboardLayoutOverlay: %s\n",
+                    toString(device->overlayKeyMap != NULL));
+        }
+    } // release lock
+}
+
+void EventHub::monitor() {
+    // Acquire and release the lock to ensure that the event hub has not deadlocked.
+    mLock.lock();
+    mLock.unlock();
+}
+
+
+}; // namespace android