linux-kernel - Re: [PATCH] input: Update Elantech touchpad driver to v5 for kernel 2.6.27-rc5-mm1

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Message-ID: <20081016030515.GA28113@amd.corenet.prv>
Date:	Wed, 15 Oct 2008 23:05:15 -0400
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Arjan Opmeer <arjan@...eer.net>
Cc:	akpm@...ux-foundation.org, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] input: Update Elantech touchpad driver to v5 for
	kernel 2.6.27-rc5-mm1

Hi Arjan,

On Fri, Sep 19, 2008 at 09:05:30AM +0200, Arjan Opmeer wrote:
> 
> Hi Dmitry,
> 
> (Sorry for calling you Dimitry earlier :)
> 
> On Fri, Sep 19, 2008 at 12:17:27AM -0400, Dmitry Torokhov wrote:
> > On Sun, Sep 14, 2008 at 05:23:44AM +0200, Arjan Opmeer wrote:
> > > 
> > > Update the Elantech touchpad driver to v5
> > 
> > Could you tell me if issues with pressure reporting mentioned in bugzilla
> > #8781 have been resolved?
> 
> I am not exactly sure what the issue is that is described there.
> 
> As far as I know the touchpad does not report pressure (maybe the EeePC
> style touchpad does, but I do not have hands on experience with that).
> However the Xorg Synaptics driver requires pressure events to work. So I
> chose a default pressure value and the driver always toggles between no
> pressure and default pressure for no touch and touch respectively. This
> seems to work well for all my testers as I have not heard any complaints.
> 

I see. In this case the driver should not really report ABS_PRESSURE but
only BTN_TOUCH. I understand that this would require synaptics X driver
changes but that should be OK. I wrote a patch to the X driver which
seems to be working if I bastardize my synaptics touchpad but I would
like to have it tested with real Elantech device. I am attaching the
version of Elantech driver that I want to apply (there were some timy
changes) and the patch to teh Synaptics X driver (against recent git
pull from its repository). If you could give it a try that would be
grand.

Thanks!

-- 
Dmitry

View attachment "synaptics-no-abspressure.patch" of type "text/plain" (6388 bytes)

View attachment "elantech-touchpad-driver.patch" of type "text/plain" (38632 bytes)