[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <1237703121.2720.39.camel@linux-51e8.site>
Date: Sun, 22 Mar 2009 17:25:21 +1100
From: Ben Nizette <bn@...sdigital.com>
To: Jani Nikula <ext-jani.1.nikula@...ia.com>
Cc: david-b@...bell.net, linux-kernel@...r.kernel.org,
juha.yrjola@...idboot.com
Subject: Re: [RFC PATCH 0/3] GPIO switch framework
On Fri, 2009-03-20 at 15:50 +0200, Jani Nikula wrote:
> Hi -
>
> This RFC patchset is a pretty straightforward adaptation of OMAP GPIO
> switch framework for mainline integration.
>
> The GPIO switch framework allows reporting and changing GPIO switches
> via sysfs, with debouncing and sysfs/in-kernel notifications for input
> switches.
OK, so what does this do that /sys/class/gpio/gpioN doesn't currently do
apart from debouncing? And the output being a string rather than a
simple value (which IMO might be better suited to userspace
interpretation anyway).
I've got a patch, little abandoned at the bottom of my queue, which adds
poll(2) compatibility to the gpiolib sysfs entries [1] and extending
this patch to do debouncing as well would be almost trivial.
I guess what I'm getting at is that this seems like it solves a problem
which has been pretty much solved elsewhere since the OMAP boys wrote
this.
--Ben.
[1] http://marc.info/?l=linux-kernel&m=122454305213792&w=2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists