<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">On 10 July 2013 10:52, Dmitry Torokhov <span dir="ltr"><<a href="mailto:dmitry.torokhov@gmail.com" target="_blank">dmitry.torokhov@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">On Wed, Jul 10, 2013 at 04:14:57PM +0100, Grant Likely wrote:<br>
> On Fri, 28 Jun 2013 07:19:06 -0600, Mathieu Poirier <<a href="mailto:mathieu.poirier@linaro.org">mathieu.poirier@linaro.org</a>> wrote:<br>
> > On 13-06-28 12:09 AM, Dmitry Torokhov wrote:<br>
> > >>>> I do not agree. We want the binding to be generic and not tied<br>
> > >>>> specifically to the keyreset functionality. As such 'input-keyset' or<br>
> > >>>> 'input-keychord' are more appropriate.<br>
> > >>><br>
> > >>> The binding is defined specifically for sysrq and specifically to<br>
> > >>> perform reset action.<br>
> > >><br>
> > >> Yes for now but as the examples in the binding show, it is easy to<br>
> > >> envision how other drivers could use it.<br>
> > ><br>
> > > I think you over-complicate things here. Unlike matrix-keypad binding,<br>
> > > where you have a common parsing code, here we have an individual driver.<br>
> > > I really do not see anyone else using such sequences or chords as such<br>
> > > processing should be done in userspace. Sysrq is quite an exception.<br>
> ><br>
> > To be honest I don't have a very strong opinion on the binding. I made<br>
> > it as generic as possible on the guidance of the DT people. Let's see<br>
> > what they think of it.<br>
><br>
> Hi Mathieu,<br>
><br>
> As per our conversation just now at Connect, the binding should probably<br>
> look like this:<br>
><br>
> Sysrq keyset binding:<br>
><br>
> The /chosen node can contain a linux,input-keyset-sysrq child node to<br>
> define a set of keys that will generate a sysrq when pressed together.<br>
<br>
Hmm, we would have only one such node, /sysrq, or /linux,sysrq,<br>
whatever. The sysrq setting is system-wide and applicable to all<br>
devices. Given that it is used only on mobile, where there not that<br>
many input devices (a few keys and touchscreen) I do not believe we<br>
should consider adding per-device settings.<br></blockquote><div><br></div><div>Putting the binding in the "chosen" node is definitely a system wide setting. If I didn't interpret your comment properly, please get back to me.</div>
<div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<br>
><br>
> Required properties:<br>
> keyset: array of keycodes<br>
<br>
Please, let's call it 'key-reset-seq', because it is exactly the reset<br>
sequence. There won't be any additional sequences or chords as those<br>
should be handled in userspace, sysrq is a special case here.<br></blockquote><div><br></div><div> </div><div>I'm not strongly opinionated on that front but I think it should, at least, include the some clue about the driver it ties to. What do you think about: "linux,sysrq-reset-seq" ?</div>
<div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<br>
> timeout-ms: duration keys must be pressed together in microseconds<br>
> before generating a sysrq<br>
><br>
<br>
Thanks.<br>
<span class=""><font color="#888888"><br>
--<br>
Dmitry<br>
</font></span></blockquote></div><br></div></div>