This function is necessary to ensure the detection of pen-down.
This patch support both QHD / WVGA pannel.
Tested-by: NTony SIM <chinyeow.sim.xt@renesas.com>
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>