From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Grant Likely <grant.likely@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>,
devicetree-discuss@lists.ozlabs.org, john.stultz@linaro.org,
kernel-team@android.com, linux-input@vger.kernel.org
Subject: Re: [PATCH 2/2] Input: Adding DT support for keyreset tuneables
Date: Wed, 10 Jul 2013 09:52:47 -0700 [thread overview]
Message-ID: <20130710165247.GA22992@core.coreip.homeip.net> (raw)
In-Reply-To: <20130710151457.D0B863E1168@localhost>
On Wed, Jul 10, 2013 at 04:14:57PM +0100, Grant Likely wrote:
> On Fri, 28 Jun 2013 07:19:06 -0600, Mathieu Poirier <mathieu.poirier@linaro.org> wrote:
> > On 13-06-28 12:09 AM, Dmitry Torokhov wrote:
> > >>>> I do not agree. We want the binding to be generic and not tied
> > >>>> specifically to the keyreset functionality. As such 'input-keyset' or
> > >>>> 'input-keychord' are more appropriate.
> > >>>
> > >>> The binding is defined specifically for sysrq and specifically to
> > >>> perform reset action.
> > >>
> > >> Yes for now but as the examples in the binding show, it is easy to
> > >> envision how other drivers could use it.
> > >
> > > I think you over-complicate things here. Unlike matrix-keypad binding,
> > > where you have a common parsing code, here we have an individual driver.
> > > I really do not see anyone else using such sequences or chords as such
> > > processing should be done in userspace. Sysrq is quite an exception.
> >
> > To be honest I don't have a very strong opinion on the binding. I made
> > it as generic as possible on the guidance of the DT people. Let's see
> > what they think of it.
>
> Hi Mathieu,
>
> As per our conversation just now at Connect, the binding should probably
> look like this:
>
> Sysrq keyset binding:
>
> The /chosen node can contain a linux,input-keyset-sysrq child node to
> define a set of keys that will generate a sysrq when pressed together.
Hmm, we would have only one such node, /sysrq, or /linux,sysrq,
whatever. The sysrq setting is system-wide and applicable to all
devices. Given that it is used only on mobile, where there not that
many input devices (a few keys and touchscreen) I do not believe we
should consider adding per-device settings.
>
> Required properties:
> keyset: array of keycodes
Please, let's call it 'key-reset-seq', because it is exactly the reset
sequence. There won't be any additional sequences or chords as those
should be handled in userspace, sysrq is a special case here.
> timeout-ms: duration keys must be pressed together in microseconds
> before generating a sysrq
>
Thanks.
--
Dmitry
next prev parent reply other threads:[~2013-07-10 16:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-27 16:13 [PATCH 1/2] Input: Add device tree bindings for input keys mathieu.poirier
2013-06-27 16:13 ` [PATCH 2/2] Input: Adding DT support for keyreset tuneables mathieu.poirier
2013-06-27 16:28 ` Dmitry Torokhov
2013-06-27 16:28 ` Dmitry Torokhov
2013-06-27 17:56 ` Mathieu Poirier
2013-06-27 18:25 ` Dmitry Torokhov
2013-06-27 18:42 ` Mathieu Poirier
2013-06-28 6:09 ` Dmitry Torokhov
2013-06-28 13:19 ` Mathieu Poirier
2013-07-10 15:14 ` Grant Likely
2013-07-10 16:52 ` Dmitry Torokhov [this message]
[not found] ` <20130710165247.GA22992-WlK9ik9hQGAhIp7JRqBPierSzoNAToWh@public.gmane.org>
2013-07-10 21:35 ` Mathieu Poirier
2013-07-10 21:50 ` Grant Likely
2013-07-10 22:20 ` Dmitry Torokhov
[not found] ` <3572203.AkEVm8LFzu-wUGeVx6es1+Q2O5dskk9LyLysJ1jNyTM@public.gmane.org>
2013-07-10 22:29 ` Mathieu Poirier
2013-07-10 22:55 ` Dmitry Torokhov
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