Date: Sun, 13 Feb 2005 12:46:58 +0100
From: Vojtech Pavlik <vojtech@suse.cz>
To: Kenan Esau <kenan.esau@conan.de>
Cc: Arjan van de Ven <arjan@infradead.org>, harald.hoyer@redhat.de,
       lifebook@conan.de, dtor_core@ameritech.net,
       linux-input@atrey.karlin.mff.cuni.cz, linux-kernel@vger.kernel.org
Subject: Re: [rfc/rft] Fujitsu B-Series Lifebook PS/2 TouchScreen driver
Message-ID: <20050213114658.GA1978@ucw.cz>
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On Sun, Feb 13, 2005 at 10:39:46AM +0100, Kenan Esau wrote:
> Am Samstag, den 12.02.2005, 12:46 -0500 schrieb Arjan van de Ven:
> > On Sat, 2005-02-12 at 18:01 +0100, Kenan Esau wrote:
> > 
> > > Second thing is that I am not shure that it is a good idea to integrate
> > > the lbtouch-support into the psmouse-driver since there is no real way
> > > of deciding if the device you are talking to is REALLY a
> > > lifebook-touchsreen or not. 
> > ...
> > > IMHO the driver should be standalone and the user should decide which
> > > driver he wants to use. As default the touchscreen-functionality will be
> > > disabled and only the quick-point device will work like a normal
> > > PS2-mouse.
> > 
> > I just want to point out that this is a problem for distributions and
> > for not-so-technical users.
> > 
> > Is there *really*  no way to know if you're on a lifebook? Can't you use
> > say the DMI identification mechanism to find this out ? If so, I think
> > integrating into the regular driver very much is the right thing to
> > do... it makes things JustWork(tm) for users without any need for manual
> > configuration (which also makes distribution makers happy).
> 
> Yes that would be nice. But the lifebook-touchscreen hardware is also
> used in other notebooks. For example the Panasonic Toughbook CF28. But
> we could still use DMI to check whether we are on a lifebook b-series
> and then initialize the hardware. This would still get 95% of all cases.
> For all the other ones we would have to provide some kind of
> force-switch.
 
Or simply another entry in the DMI table for the Toughbook, and for the
few others who use this kind of touchscreen controller. 

-- 
Vojtech Pavlik
SuSE Labs, SuSE CR
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