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

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Message-ID: <20091215115011.GB1385@ucw.cz>
Date:	Tue, 15 Dec 2009 12:50:11 +0100
From:	Pavel Machek <pavel@....cz>
To:	Mauro Carvalho Chehab <mchehab@...hat.com>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Krzysztof Halasa <khc@...waw.pl>,
	Jon Smirl <jonsmirl@...il.com>,
	hermann pitton <hermann-pitton@...or.de>,
	Christoph Bartelmus <lirc@...telmus.de>, awalls@...ix.net,
	j@...nau.net, jarod@...hat.com, jarod@...sonet.com,
	kraxel@...hat.com, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
	superm1@...ntu.com
Subject: Re: [RFC] What are the goals for the architecture of an in-kernel
	IR  system?


> > This sounds like "merge first, think later"...
> > 
> > The question is why we need to merge lirc interface right now, before we
> > agreed on the sybsystem architecture? Noone _in kernel_ user lirc-dev
> > yet and, looking at the way things are shaping, no drivers will be
> > _directly_ using it after it is complete. So, even if we merge it right
> > away, the code will have to be restructured and reworked. Unfortunately,
> > just merging what Jarod posted, will introduce sysfs hierarchy which
> > is userspace interface as well (although we not as good maintaining it
> > at times) and will add more constraints on us.
> > 
> > That is why I think we should go the other way around - introduce the
> > core which receivers could plug into and decoder framework and once it
> > is ready register lirc-dev as one of the available decoders.
> > 
> 
> I've committed already some IR restruct code on my linux-next -git tree:
> 
> http://git.kernel.org/?p=linux/kernel/git/mchehab/linux-next.git
> 
> The code there basically moves the input/evdev registering code and 
> scancode/keycode management code into a separate ir-core module.
> 
> To make my life easy, I've moved the code temporarily into drivers/media/IR.
> This way, it helps me to move V4L specific code outside ir-core and to later
> use it for DVB. After having it done, probably the better is to move it to
> be under /drivers or /drivers/input.

Well, -next is for stuff to be merged into 2.6.34. You are quite an
optimist.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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