From: Felipe Balbi <me@felipebalbi.com>
To: felipe.balbi@nokia.com
Cc: Linux OMAP Mailing List <linux-omap@vger.kernel.org>
Subject: Re: TWL4030 keypad timeout interrupt
Date: Tue, 13 May 2008 09:28:21 -0500 [thread overview]
Message-ID: <3d1886c4eeb5320b5d443df10b6bed87@felipebalbi.com> (raw)
In-Reply-To: <20080513135417.GL4244@gandalf.research.nokia.com>
On Tue, 13 May 2008 16:54:17 +0300, Felipe Balbi <felipe.balbi@nokia.com>
wrote:
> Hi all,
>
> I noted whenever we release a key in omap-twl4030.c driver it generates
> two interrupts: one for release event and one for a timeout event.
>
> Is that expected or is that a bug somewhere in the driver ?
>
> It's easily noted by cat /proc/interrupts ;-)
Replying to myself as I found some more clues.
By checking the code I could see that only rising edge of
timeout interrupt is being enabled. Also timeout register
is at 0xd6, but code is writing 0x04...
So if i read it correctly, we might have 0 set as our timeout.
which might explain why we only see the timeout interrupt
when releasing the key.
Am I right ?
I might be completely wrong here, but that extra interrupt
happening all the time is just bugging me :-p
--
Best Regards,
Felipe Balbi
http://felipebalbi.com
me@felipebalbi.com
next prev parent reply other threads:[~2008-05-13 14:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-13 13:54 TWL4030 keypad timeout interrupt Felipe Balbi
2008-05-13 14:28 ` Felipe Balbi [this message]
2008-05-14 5:08 ` Girish
2008-05-14 8:16 ` Felipe Balbi
2008-05-14 8:57 ` Girish
2008-05-14 9:52 ` Gopinath, Thara
2008-05-14 10:08 ` Felipe Balbi
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