[meta-freescale] [linux-boundary][PATCH] egalax_ts: Always report all touch points before input_sync()

[Otavio Salvador]

On Wed, Jul 3, 2013 at 4:20 AM, Erik Botö <erik.boto at pelagicore.com> wrote:
> Hi,
>
> Since the motivation for this patch was only discussed in a separate
> mail thread I'll summarize here:
>
> The previous behavior of the driver did not work properly with Qt5
> QtQuick multi touch-point gestures, due to how touch-points are
> reported when removing a touch-point. My interpretation of the
> available documentation [1] was that the driver should report all
> touch-points between SYN_REPORTs, but it is not explicitly stated so.
> I've found another mail-thread [2] where the creator of the protocol
> states:
>
> "The protocol defines a generic way of sending a variable amount of
> contacts. The
> contact count is obtained by counting the number of non-empty finger packets
> between SYN_REPORT events." - Henrik Rydberg
>
> I think this verifies my assumption that all touch-points should be
> reported between SYN_REPORTs, otherwise it can not be used to obtain
> the count.
>
> [1] - https://www.kernel.org/doc/Documentation/input/multi-touch-protocol.txt
> [2] - http://lists.x.org/archives/xorg-devel/2010-March/006466.html

Please add this to the commit log ;)

--
Otavio Salvador                             O.S. Systems
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