[PATCH 1/2] Add Variance filter

Nelson Castillo nelsoneci at gmail.com
Mon Dec 8 03:05:46 CET 2008

On Thu, Dec 4, 2008 at 9:15 PM, Nelson Castillo <nelsoneci at gmail.com> wrote:
> On Thu, Dec 04, 2008 at 11:58:48PM +0100, Michael 'Mickey' Lauer wrote:
>> Andy, Nelson,
>> with all your work on improving touchscreen in-kernel, what's your take on
>> tslib?
> Hello Michael.
> To the point:
> Not that I'm working on it ... but if by adding a few more filters (at
> most 3 small ones) we can do the calibration and all the filtering in
> kernel space and not require tslib, should we do it?

No need to add more filters... I added one and deleted two
("variance" and "skip") and now we perform much better.
The TS works very well without user-space filtering.

Clicks with the finger work well also.

Patches soon...

More information about the openmoko-kernel mailing list