Re: [PATCH] Add generic driver for Silead tochscreens

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Hello.

You beat me to it - I noticed the lack of a generic Silead driver that works
with Baytrail tablets (and ACPI) and started writing one myself, adapting the
code by Joe Burmeister (https://github.com/jabjoe/sunxi-gslx680). You can find
my endeavors (so far) here: https://github.com/onitake/gslx680-acpi

While writing the driver, I noticed that my controller or the firmware (which
I got from the Windows 8 driver for the tablet) does not seem to support
finger tracking. If I look at the data packets, almost all of them carry 0 as
the finger ID, while some carry 4. Lifting a finger simply removes the record,
without providing a way to correlate it with the next data set.

The code I worked with seems to support some kind of finger tracking, but it
still uses the ID field of each touch record as finger ID. And that does not
work with my touchscreen.

In the meantime, I just implemented type A multitouch support, leaving the
finger tracking out.

Can you help me look into the problem?
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