From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: "Pali Rohár" <pali.rohar@gmail.com>,
"Peter Hutterer" <peter.hutterer@who-t.net>
Cc: Masaki Ota <masaki.ota@jp.alps.com>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: ALPS Trackpoint & pressure
Date: Mon, 5 Feb 2018 14:49:55 -0800 [thread overview]
Message-ID: <20180205224955.GB46524@dtor-ws> (raw)
In-Reply-To: <20180204150839.b5qm4wb26vic35st@pali>
On Sun, Feb 04, 2018 at 04:08:39PM +0100, Pali Rohár wrote:
> Hi! Now playing again with trackpoint connected to ALPS rushmore
> touchpad and I'm seeking a nice feature. Via ALPS PS/2 protocol it
> reports pressure of trackpoint. Parser for it is already implemented in
> alps.c and value is assigned to variable "z". When I just move
> trackpoint z is zero, when I push trackpoint while moving, then z is
> number higher, maximally 32. Variable "z" is set, but unused.
>
> Do we have some input interface which can be used to report this
> pressure of trackpoint to userspace? I can use this feature e.g. as
> additional button...
We could either do the conversion in kernel and emit BTN_LEFT, or
report ABS_PRESSURE and see if userspace will be able to handle
REL_X/REL_Y/ABS_PRESSURE device.
Adding Peter.
--
Dmitry
next prev parent reply other threads:[~2018-02-05 22:49 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-04 15:08 ALPS Trackpoint & pressure Pali Rohár
2018-02-05 22:49 ` Dmitry Torokhov [this message]
2018-02-06 0:29 ` Peter Hutterer
2018-02-08 23:21 ` Pali Rohár
2018-02-08 23:57 ` Peter Hutterer
2018-03-21 17:48 ` Pali Rohár
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