Hi! > > Well, there is some historic confusion wether this driver reports resistance > > or pressure. > > > > The unpatched tsc2007 driver does it wrong (please test!) and we fix it on > > the fly (because a separate patch is much more complex than doing it right > > immediately). > > > > This ti,report-resistance property is a means to get the old (wrong) > > meaning back > > in case someone urgently needs it and can't fix the user-space workaround > > which > > he must be using. > > > > > > AFAIK there is no mainline board using the DT except ours (and the upcoming > > OMAP5-Pyra), so we shouldn't care too much. If you prefer, you can remove > > this > > compatibility property. We don't need it for our devices.
N900 is mainline and uses DT.
> > That the function name is wrong is a second issue and this double negation
> > might
> > confuse a litte.
> >
> > Please test on a real device if the patched driver reports pressure now
> > (unless
> > ti,report-resistance is specified).
>
> I unfortunately can not test this driver as I do not have the hardware.
> So all my observations are from code and data sheets.
>
> That said, what is the values emitted as ABS_PRESSURE when finger is not
> touching the device, barely touching the device, or pressing firmly?
> It seems that between TSC2007, TSC2004, TSC2005, and ADS7846, we have
> confusion as to what is being reported.
>
> I am adding a few more folks to the CC so we can try and soft this out.
> Sebastian, Pali, Pavel, any input here?
X work ok on N900. Nikolaus wrote rather long email, but I'm not what
the meaning is and what is supposed to be broken there.
I do this on X startup:
xinput --set-prop --type=float "TSC200X touchscreen" "Coordinate Transformation
Matrix" 1.10 0.00 -0.05 0.00 1.18 -0.10 0.00 0.00 1.00
xinput --set-prop --type=int "TSC200X touchscreen" "Evdev Axis Inversion" 0 1
xinput --set-prop --type=float "TSC2005 touchscreen" "Coordinate Transformation
Matrix" 1\
.10 0.00 -0.05 0.00 1.18 -0.10 0.00 0.00 1.00
xinput --set-prop --type=int "TSC2005 touchscreen" "Evdev Axis Inversion" 0 1
And I agree that kernel should _not_ attempt rescaling itself, as it
would lose precision. Providing default calibration info is ok.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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