Subject: j6x0tp - driver for Jornada 680 touch screen
To: None <email@example.com>
From: Valeriy E. Ushakov <firstname.lastname@example.org>
Date: 10/19/2003 06:36:11
On Sat, Oct 18, 2003 at 05:56:27 +0400, Valeriy E. Ushakov wrote:
> I gonna work on the touch-panel support next, as after some reverse
> engineering I know how it's connected to the ADC and PFC. I already
> have sample code that reports useful values, but I need to polish it
> and plug it into the rest of the system (calibration, wsmouse, &c).
Committed, though not tested much (at least od /dev/wsmouse looks
To use it, add this to your kernel config:
adc* at shb? # analog->digital converter
j6x0tp* at adc? # touch panel
wsmouse* at j6x0tp? mux 0
The driver has default calibration info hardcoded. You can use
tpctl(8) to recalibrate it. Don't forget tpctl=YES in rc.conf to get
that calibration data loaded on startup. However it seems tpctl(8)
cannot quite cope with upper-left corner margins, so its calibration
will be a bit skewed.
You can frob j6x0tp_debug from DDB, setting it to 3 will spam you with
debugging info about coordinates conversion.
Please, report any problems.
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