SamsungSensorBase::SamsungSensorBase(const char *dev_name,
                                     const char *data_name,
                                     int sensor_code)
    : SensorBase(dev_name, data_name),
      mEnabled(false), //cvt_zxl modify
      mHasPendingEvent(false),
      mInputReader(4),
      mSensorCode(sensor_code),
      mLock(PTHREAD_MUTEX_INITIALIZER)
{
    mPendingEvent.version = sizeof(sensors_event_t);
    memset(mPendingEvent.data, 0, sizeof(mPendingEvent.data));
    if (!data_fd)
        return;
    mInputSysfsEnable = makeSysfsName(input_name, "enable");
    if (!mInputSysfsEnable) {
        ALOGE("%s: unable to allocate mem for %s:enable", __func__,
              data_name);
        return;
    }
    mInputSysfsPollDelay = makeSysfsName(input_name, "poll_delay");
    if (!mInputSysfsPollDelay) {
        ALOGE("%s: unable to allocate mem for %s:poll_delay", __func__,
              data_name);
        return;
    }

    int flags = fcntl(data_fd, F_GETFL, 0);
    fcntl(data_fd, F_SETFL, flags | O_NONBLOCK);
}
IioSensorBase::IioSensorBase(const char *dev_name,
                                     const char *data_name,
                                     const char *enable_name,
                                     const char *chan_name,
                                     int iio_chan_type)
    : SensorBase(dev_name, data_name),
      mEnabled(true),
      mHasPendingEvent(false),
      mInputReader(MAX_BUFFER_FOR_EVENT),
      mIioChanType(iio_chan_type),
      mIioSysfsChanFp(NULL)
{
    pthread_mutex_init(&mLock, NULL);
    ALOGV("%s(): dev_name=%s", __func__, dev_name);
    mPendingEvent.version = sizeof(sensors_event_t);
    memset(mPendingEvent.data, 0, sizeof(mPendingEvent.data));
    if (!mDataFd)
        return;

    mInputSysfsEnable = makeSysfsName(mInputName, enable_name);
    if (!mInputSysfsEnable) {
        ALOGE("%s: unable to allocate mem for %s:%s", __func__,
             data_name, enable_name);
        return;
    }
    mInputSysfsSamplingFrequency = makeSysfsName(mInputName, "sampling_frequency");
    if (!mInputSysfsSamplingFrequency) {
        ALOGE("%s: unable to allocate mem for %s:poll_delay", __func__,
             data_name);
        return;
    }

    mIioSysfsChan = makeSysfsName(mInputName, chan_name);
    if (!mIioSysfsChan) {
        ALOGE("%s: unable to allocate mem for %s:%s", __func__, data_name,
             chan_name);
        return;
    }

    mIioSysfsChanFp = fopen(mIioSysfsChan, "r");
    if (mIioSysfsChanFp == NULL) {
        ALOGE("%s: unable to open %s", __func__, mIioSysfsChan);
        return;
    }

    int flags = fcntl(mDataFd, F_GETFL, 0);
    fcntl(mDataFd, F_SETFL, flags | O_NONBLOCK);

    enable(0, 0);
}