From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: felipe.balbi@nokia.com
Cc: Linux OMAP Mailing List <linux-omap@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Tony Lindgren <tony@atomide.com>,
David Brownell <david-b@pacbell.net>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 1/5] gpiolib: introduce set_debounce method
Date: Thu, 20 May 2010 20:45:10 +0100 [thread overview]
Message-ID: <20100520194509.GB10739@sirena.org.uk> (raw)
In-Reply-To: <1274090554-19420-2-git-send-email-felipe.balbi@nokia.com>
On Mon, May 17, 2010 at 01:02:30PM +0300, felipe.balbi@nokia.com wrote:
> From: Felipe Balbi <felipe.balbi@nokia.com>
>
> Few architectures, like OMAP, allow you to set
> a debouncing time for the gpio before generating
> the IRQ. Teach gpiolib about that.
>
> Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This would be generally useful for embedded systems, especially where
the interrupt concerned is a wake source. It allows drivers to avoid
spurious interrupts from noisy sources so if the hardware supports it
the driver can avoid having to explicitly wait for the signal to become
stable and software has to cope with fewer events. We've lived without
it for quite some time, though.
next prev parent reply other threads:[~2010-05-20 19:45 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-17 10:02 [PATCH 0/6] teach gpiolib about gpio debouncing felipe.balbi
2010-05-17 10:02 ` [PATCH 1/5] gpiolib: introduce set_debounce method felipe.balbi
2010-05-20 18:06 ` Andrew Morton
2010-05-20 18:52 ` Felipe Balbi
2010-05-20 19:04 ` Alan Cox
2010-05-20 19:16 ` Andrew Morton
2010-05-20 20:51 ` Alan Cox
2010-05-20 19:45 ` Mark Brown [this message]
2010-05-20 22:50 ` David Brownell
2010-05-20 22:50 ` David Brownell
2010-05-21 6:49 ` Felipe Balbi
2010-05-21 10:11 ` Alan Cox
2010-05-21 13:14 ` David Brownell
2010-05-21 13:34 ` Alan Cox
2010-05-21 13:23 ` David Brownell
2010-05-21 13:23 ` David Brownell
2010-05-21 10:05 ` Alan Cox
2010-05-17 10:02 ` [PATCH 2/5] arm: omap: gpio: implement " felipe.balbi
2010-05-17 10:02 ` [PATCH 3/5] arm: omap: switch over to gpio_set_debounce felipe.balbi
2010-06-16 17:26 ` Grazvydas Ignotas
2010-06-17 4:45 ` Felipe Balbi
2010-06-20 17:03 ` Grazvydas Ignotas
2010-06-20 21:12 ` Felipe Balbi
2010-05-17 10:02 ` [PATCH 4/5] arm: omap: remove the unused omap_gpio_set_debounce methods felipe.balbi
2010-05-17 10:02 ` [PATCH 5/5] arm: omap: move all gpio defines to plat/gpio.h felipe.balbi
2010-05-17 10:08 ` Felipe Balbi
2010-05-20 18:04 ` [PATCH 0/6] teach gpiolib about gpio debouncing Andrew Morton
2010-05-20 18:55 ` Felipe Balbi
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