linux-kernel - Re: [RFC] What are the goals for the architecture of an in-kernel IR system?

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Message-ID: <4B12EEC2.3030207@gmail.com>
Date:	Sun, 29 Nov 2009 22:59:30 +0100
From:	Artur Skawina <art.08.09@...il.com>
To:	mike@...ambier.net
CC:	Jon Smirl <jonsmirl@...il.com>,
	Christoph Bartelmus <christoph@...telmus.de>,
	jarod@...sonet.com, awalls@...ix.net, dmitry.torokhov@...il.com,
	j@...nau.net, jarod@...hat.com, khc@...waw.pl,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-media@...r.kernel.org, mchehab@...hat.com, superm1@...ntu.com
Subject: Re: [RFC] What are the goals for the architecture of an in-kernel
 IR system?

Mike Lampard wrote:
> an example I have a VDR instance running in the background on my desktop 
> machine outputting to a TV in another room via a pci mpeg decoder - I 
> certainly don't want the VDR remote control interacting with my X11 desktop in 
> any way unless I go out of my way to set it up to do so, nor do I want it 
> interacting with other applications (such as MPD piping music around the 
> house) that are controlled via other remotes in other rooms unless specified.
> 
> Setting this up with Lircd was easy, how would a kernel-based proposal handle 
> this?

eg

EV="/dev/input/"$( cd "/sys/class/input" &&
   ( grep -l 'X10' event*/device/name || grep -l 'X10' event*/device/manufacturer ) |
   sed -e 's,/.*,,' )

./vdr [...] -P "remote -i $EV"

This is how it has worked for years, so there's no reason it wouldn't work w/ any
future scheme. The remote buttons normally arrive as normal kbd keys; once an app
grabs the input device corresponding to a remote, it receives the events exclusively.

artur
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