M9206_FILTER
if ((ret = m920x_write(d->udev, M9206_FILTER, pid, (type << 8) | (idx * 4) )) != 0)
if ((ret = m920x_write(d->udev, M9206_FILTER, 0, (type << 8) | (idx * 4) )) != 0)
if ((ret = m920x_read(udev, M9206_FILTER, 0x0, 0x8000, read, 4)) != 0)