linux-kernel - Re: [RFC] Should we create a raw input interface for IR's ? - Was: Re: [PATCH 1/3 v2] lirc core device driver infrastructure

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Message-ID: <BDcbizrJjFB@christoph>
Date:	26 Nov 2009 09:01:00 +0100
From:	lirc@...telmus.de (Christoph Bartelmus)
To:	jarod@...sonet.com
Cc:	superm1@...ntu.com
Subject: Re: [RFC] Should we create a raw input interface for IR's ? - Was: Re: [PATCH 1/3 v2] lirc core device driver infrastructure

Hi,

on 25 Nov 09 at 12:44, Jarod Wilson wrote:
[...]
> Ah, but the approach I'd take to converting to in-kernel decoding[*] would
> be this:
[...]
> [*] assuming, of course, that it was actually agreed upon that in-kernel
> decoding was the right way, the only way, all others will be shot on sight.

I'm happy to see that the discussion is getting along.
But I'm still a bit hesitant about the in-kernel decoding. Maybe it's just  
because I'm not familiar at all with input layer toolset.

1. For sure in-kernel decoding will require some assistance from userspace  
to load the mapping from IR codes to keys. So, if there needs to be a tool  
in userspace that does some kind of autodetection, why not have a tool  
that does some autodetection and autoconfigures lircd for the current  
device. Lots of code duplication in kernel saved. What's the actual  
benefit of in-kernel decoding?

2. What would be the format of the key map? lircd.conf files already exist  
for a lot of remote controls. Will we have a second incompatible format to  
map the keys in-kernel? Where are the tools that create the key maps for  
new remotes?

Maybe someone can shed some light on this.

Christoph
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