From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: David Brownell <david-b@pacbell.net>
Cc: felipe.balbi@nokia.com,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
Linux OMAP Mailing List <linux-omap@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Tony Lindgren <tony@atomide.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 1/5] gpiolib: introduce set_debounce method
Date: Fri, 21 May 2010 14:34:32 +0100 [thread overview]
Message-ID: <20100521143432.5de6ebec@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <396934.73027.qm@web180307.mail.gq1.yahoo.com>
> One of the earlier examples of why to want debouncing (in the
> original discussion, not this one) was for buttons (one signal
> per button press) and the hardware designers don't necessarily
> hook buttons up to only GPIOs with hardware debounce. So code
> to kick in debounce there needed to be sensitive to whether or
> not the capability was available ... and moreover, whether the
> debounce scale was adequate to compensate the contact chatter.
> When not, then software debounce was inescapable.
And someone who needs it can contribute it. The proposed patch causes no
problems in this area.
Alan
next prev parent reply other threads:[~2010-05-21 13:28 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
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 [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100521143432.5de6ebec@lxorguk.ukuu.org.uk \
--to=alan@lxorguk.ukuu.org.uk \
--cc=akpm@linux-foundation.org \
--cc=broonie@opensource.wolfsonmicro.com \
--cc=david-b@pacbell.net \
--cc=felipe.balbi@nokia.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=tony@atomide.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.