From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andres Salomon <dilinger@queued.net>
Subject: Re: [PATCH] psmouse: disable the synaptics extension on OLPC
 machines.
Date: Sun, 19 Dec 2010 00:32:14 -0800
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To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Daniel Drake <dsd@laptop.org>, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, pgf@laptop.org, James Cameron <quozl@laptop.org>

On Sun, 19 Dec 2010 00:20:27 -0800
Dmitry Torokhov <dmitry.torokhov@gmail.com> wrote:

> On Sat, Dec 18, 2010 at 10:00:51AM +0000, Daniel Drake wrote:
> > On 18 December 2010 07:02, Dmitry Torokhov
> > <dmitry.torokhov@gmail.com> wrote:
> > > What about just adding psmouse.proto=exps then?
> > 
> > It's not quite that simple either, because we want the same distro
> > image to work on all versions of XO. XO's can come with either hgpk,
> > synaptics, or sentelic touchpads. In the sentelic and hgpk cases,
> > we'd want the "real" drivers to kick in.
> > 
> 
> Hmm, I am confused. HGPK depends on OLPC so your distribution must
> have it defined. Are there general purpose distributions that enable
> OLPC?


Yes, Debian enables CONFIG_OLPC in its 486 kernel (and one of these
days, I'll open up a bug for them to enable it in their 686 kernel).

There are 3 types of touchpads in OLPC XO machines (hgpk, synaptics,
and sentelics).  If the hardware is either hgpk or sentelics, we want
those extensions to load.  If the hardware is synaptics, we want the
extension not to load.  Doing this via kernel
arg doesn't work, as a generic distributions (and even those built
specifically for OLPC XOs) will not know which touchpad hardware will
be in use.