Re: [PATCH] Synaptics TouchPad driver for 2.5.70

From: Vojtech Pavlik (
Date: Fri Jun 13 2003 - 02:44:35 EST

On Fri, Jun 13, 2003 at 01:42:40AM +0200, Peter Berg Larsen wrote:

> On Fri, 13 Jun 2003, Vojtech Pavlik wrote:
> > > > The synaptics driver, if it wished to demultiplex a true mouse protocol
> > > > behind the pad without an active multiplexing controller, could easily
> > > > create a new serio port, to which the psmouse driver would attach,
> > > > detect, and drive the mouse. It's a bit crazy, but it should work.
> > > hmm, that is clever. But I am afraid it will not work: the master (the
> > That's sad. Anyway, we'll have to find a solution for this. Either the
> > synaptics driver parsing the communication on the new serio port (which
> > isn't as complex as it looks) and detecting the packet length from that,
> > or some way the psmouse driver can tell it what packet size it uses.
> If the synaptic driver can deduce the protocol by listning to the probing
> communication, it might as well just sent it itself.

Not the protocol. Just the number of bytes per packet. That's quite a
different amount of understanding of the data passed through.

Vojtech Pavlik
SuSE Labs, SuSE CR
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