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

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Message-Id: <201004092242.11897.james@albanarts.com>
Date:	Fri, 9 Apr 2010 22:42:03 +0100
From:	James Hogan <james@...anarts.com>
To:	Mauro Carvalho Chehab <mchehab@...hat.com>
Cc:	Andy Walls <awalls@...ix.net>, Jon Smirl <jonsmirl@...il.com>,
	Pavel Machek <pavel@....cz>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Krzysztof Halasa <khc@...waw.pl>,
	hermann pitton <hermann-pitton@...or.de>,
	Christoph Bartelmus <lirc@...telmus.de>, 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?

On Fri, Apr 09, 2010 at 06:50:26AM -0400, Andy Walls wrote:
> If you're waiting for me to get that working, I'll advise you to plan on
> getting off the couch and pushing the power switch for some time to
> come. ;)

:-)

On Friday 09 April 2010 14:01:46 Mauro Carvalho Chehab wrote:
> The additions at IR core, if needed [1], shouldn't be hard, but the main
> changes should happen at the hardware driver level.  There's no current
> plans for it, at least from my side, but, let's see if some hardware
> driver developers want to implement it on the corresponding driver.
> 
> [1] Basically, a keycode (like KEY_POWER) could be used to wake up the
> machine. So, by associating some scancode to KEY_POWER via ir-core, the
> driver can program the hardware to wake up the machine with the
> corresponding scancode. I can't see a need for a change at ir-core to
> implement such behavior. Of course, some attributes at sysfs can be added
> to enable or disable this feature, and to control the associated logic,
> but we first need to implement the wakeup feature at the hardware driver,
> and then adding some logic at ir-core to add the non-hardware specific
> code there.

Thanks for the info Mauro.

Cheers
James

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