Re: [PATCH] input: ALPS - Add signature for HP Pavilion dm3 laptops

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On Wed, Apr 21, 2010 at 08:15:17AM -0400, Chase Douglas wrote:
> On Wed, Apr 21, 2010 at 12:10 AM, Dmitry Torokhov
> <dmitry.torokhov@xxxxxxxxx> wrote:
> > On Tue, Apr 20, 2010 at 11:47:20PM -0400, Chase Douglas wrote:
> >> On Tue, Apr 20, 2010 at 9:01 AM, Chase Douglas
> >> <chase.douglas@xxxxxxxxxxxxx> wrote:
> >> > On Tue, Apr 20, 2010 at 12:29 AM, Dmitry Torokhov
> >> > <dmitry.torokhov@xxxxxxxxx> wrote:
> >> >> That means that our standard magic knock did not work. It seems that
> >> >> newer version of ALPS are using a different "magic knock" sequence for
> >> >> them.
> >> >
> >> > How can we find out what the new knock sequence is?
> >>
> >
> > One way would be to run the $OTHER_OS with proper driver inside a VM and
> > pass-through all commands from that OS to real PS/2 hardware recodring
> > the sequence in process.
> 
> Do you know of any documentation on how to do this? I've tried various
> google searches, but I'm having difficulty finding information on
> sniffing the ps/2 protocol through a vm.
> 

I do not know of existing setups. I'd expect you'll have to pick in
QEMU/KVM guts and make it talk to psaux interface (the old, 2.4-style
PS/2 port). Then, on the host side, set up serio_raw driver instead of
psmouse to that VM can talk to real hardware.

-- 
Dmitry
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