Subject: Re: [rfc/rft] Fujitsu B-Series Lifebook PS/2 TouchScreen driver
From: Kenan Esau <kenan.esau@conan.de>
To: Vojtech Pavlik <vojtech@suse.cz>
Cc: harald.hoyer@redhat.de, lifebook@conan.de, dtor_core@ameritech.net,
       linux-input@atrey.karlin.mff.cuni.cz, linux-kernel@vger.kernel.org
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Date: Sun, 13 Feb 2005 19:14:44 +0100
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Am Sonntag, den 13.02.2005, 13:01 +0100 schrieb Vojtech Pavlik: 
> On Sun, Feb 13, 2005 at 11:05:00AM +0100, Kenan Esau wrote:
>  
> > > > This
> > > > sequence does not always work and there is not something like a "magic
> > > > knock sequence".
> > > 
> > > You mean that the only needed bit is setting the resolution to '7'?
> > 
> > The lifebook touchscreen has some extensions to the standard protocol:
> > 
> > 0xe8 0x06: Stop absolute coordinate output 
> > 0xe8 0x07: Start absolute coordinate outpout (3-byte packets)
> > 0xe8 0x08: Start absolute coord. output with 6-byte packets
> 
> Are the 6-byte packets carrying any more information than the 3-byte
> packets do, for example pressure? Would it be useful to go for the
> 6-byte mode instead in the driver?

No the 6-byte mode does not carry any more information. Sorry but no
pressure-info... 

> Have you tried whether the controller responds to the GETID (f2),
> GETINFO (e9) and POLL (eb) commands? Maybe we could detect it that way.

I have to try those commands and check the response. I know that they
are supported but I have never tried them.

[...]

> > If you agree I will take your patch as the basis and make it work. Now I
> > know how you want it to look like.
> 
> That would be very much appreciated.

OK. I'll send you a new patch within the next week.

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