On Thu, Apr 21, 2011 at 8:52 AM, Chris Bagwell <ch...@cnpbagwell.com> wrote:
> On Thu, Apr 21, 2011 at 1:14 AM, Peter Hutterer
> <peter.hutte...@who-t.net> wrote:
> > On Wed, Apr 20, 2011 at 09:35:52PM -0500, Favux ... wrote:
> >> While preparing to modify the Rotate parameter entries in the
> >> mediawiki to bring them up to date with 0.11.0 I tested the parameter.
> >> It is not tablet wide with a Bamboo Pen & Touch. Rotating the stylus
> >> does rotate the eraser but not touch and rotating touch does not
> >> rotate the stylus or eraser. I suspect this is true of any usb tablet
> >> with touch. I assume touch is rotated with a ISDV4 device when the
> >> stylus is rotated but I guess I'd like that confirmed.
> >
> > The bamboo exports two kernel devices that also appear as two different
> > devices to the driver, with two different wcmCommon devices. Only the
> > Bamboos should be affected by this, no other tablets.
> >
> > I thought this should be fixed with Ping's "Centralize pen and touch
> > arbitration" patch, but it may not be. Long story short, we should just
> > share the common struct between the two devices.
> >
>
> It looks like that patch links them but uses a special wcmTouchDevice
> instead of wcmDevices. That simplifies some other code in the patch
> but then has this downside.
>
That patch was aimed at "pen and touc arbitration" to get rid of the jumps
when switching between pen and touch. A follow-up patchset is needed to
combine pen and touch into one common.
> I may play with linking them the normal way and see how much grief it
> causes.
Have you got enough fun yet ;)? It's all yours. I won't be able to get to
it before June anyway.
> Isn't their a libudev patch floating around on mailing list to use
> instead of strcmp()? I'd prefer using that if I'm working on it.
No, there is no patch for that yet. Peter shared a proof-of-concept program.
It looked very promising. We just need to translate the concept into the
driver code. It can be part of the pen-touch merging patchset since we need
to make sure the pen and touch are from the same physical device.
I can forward Peter's email to you if you can not find it anymore.
Ping
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