linux-kernel - Re: gpio_keys

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Message-ID: <20120621085340.GE2193@core.coreip.homeip.net>
Date:	Thu, 21 Jun 2012 01:53:40 -0700
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Roland Stigge <stigge@...com.de>
Cc:	dgdunix@...il.com, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: gpio_keys_polled.c and DT

Hi Roland,

On Tue, Jun 19, 2012 at 05:02:03PM +0200, Roland Stigge wrote:
> Hi,
> 
> as far as I can see, gpio_keys_polled.c currently doesn't support DT
> initialization. Is there a plan in this regard?
> 
> Rather than duplicating the respective code from gpio_keys.c, maybe
> gpio_keys.c could be changed to support a polled mode also? This way,
> gpio_keys_polled.c could be removed.

We had several attempts at gpio_keys and adding a polled mode and we
ended up with the driver getting too complex and having unwanted
dependencies. At the moment I believe that the split between gpio_keys.c
and gpio_keys_polled.c is justified even it it may lead to certain code
duplication.

However, if DT bindings are really the same we could split them off into
a separate library module used by both drivers.

Thanks.

-- 
Dmitry
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