These coordinates can be from the last press, ideally we would
get the coordinates freshly when fod_press_status changes.
Change-Id: I8c0096c96612c8ea8b612696ecf702d7945a1b84
This does not work with xiaomi's original display driver,
since partial reads from it are broken and it rejects all
reads whose size is insufficient to get the whole response.
However, the size is not known in prior, so we actually
want to read the header first to determine the actual size
and continue reading then. This requires a kernel side fix
like [1].
To make this work with the stock kernel driver instead,
adjust the parseDispEvent method to read with a larger
buffer directly and decrease the size of the data
according to the header later.
[1]: b80cb5a028
Change-Id: Id8f9ac8ef32462dd00832af12ff60a3610103e2a
