linux-kernel - Re: [PATCH] leds-alix2: add support for button connected to J15

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Message-ID: <20091022102937.GA3981@ucw.cz>
Date:	Thu, 22 Oct 2009 12:29:38 +0200
From:	Pavel Machek <pavel@....cz>
To:	Daniel Mack <daniel@...aq.de>
Cc:	Richard Purdie <rpurdie@...ys.net>, linux-kernel@...r.kernel.org,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org, Constantin Baranov <const@...as.ru>
Subject: Re: [PATCH] leds-alix2: add support for button connected to J15

Hi!

> > > for a project I was working on, we used the J15 connector of the ALIX.2D
> > > board (which is connected to a GPIO of the CS5536 Geode companion chip)
> > > for an external button switch.
...
> Hmm, hard to say. One can either use that IO as output to control a
> buzzer (which isn't placed on the board, but there are solder pads for
> it), as output for other purpose or as input.
> 
> Don't know what other people use it for, though, but we needed an
> external button in our case and use this IO pin for that purpose.
> 
> Anyway - I don't insist in that patch to be taken. The idea was more to
> share it so others won't have to hack the same thing.

So its gpio pin... if you teach gpio framework about it, you should be
able to just use gpio_button driver to handle it, no?

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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