[PATCH 0/3] Improve touchscreen filters
andy at openmoko.com
Mon Dec 8 20:14:20 CET 2008
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Somebody in the thread at some point said:
| My current ts.conf file is:
| module_raw input grab_events=1
| module linear
| Therefore I think it makes sense to do the calibration in the kernel.
| It is very simple anyway (linear module).
| We could add the following sysfs entries.
| /sys/class/touchscreen/calN ..
| /sys/class/input/touchscreen0/calN ..
| (I have to read more about the naming conventions, any hint
| will be appreciated).
Maybe you should create it as a child of the touchscreen device /sys,
then symlink it to /sys/class/input/touchscreen0/calN or something along
| * Add default calibration values that do not change the output
| of the touchscreen.
I don't know what the spread of touchscreen results look like in bulk,
but I guess it varies enough the touchscreen can't really be relied on
for much without individually customized calibration, so you might as
well leave it alone by default.
After we done this, we should clean it into a patchset and request some
comments about it upstream I think.
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