From: Wolfram Sang <w.sang@pengutronix.de>
To: Peter Rusko <rusko.peter@prolan.hu>
Cc: Grant Likely <grant.likely@secretlab.ca>, linux-kernel@vger.kernel.org
Subject: Re: PCA GPIO interrupt triggers
Date: Sun, 25 Mar 2012 09:40:12 +0200 [thread overview]
Message-ID: <20120325074012.GA25173@pengutronix.de> (raw)
In-Reply-To: <4F6B4C11.4000608@prolan.hu>
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> I'm using a GPIO chip (PCA9554) for a matrix-keypad. The keypad
> driver itself needs interrupts for both rising and falling edges.
> The PCA driver (gpio-pca953x.c) doesn't support it, but I don't
> understand why.
? I fail to see why having EDGE_FALLING together with EDGE_RISING is not
supported. Are you sure you didn't use some other IRQ_TYPE here?
> I think, this patch should work:
Think? Can't you test it :)
Regards,
Wolfram
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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next prev parent reply other threads:[~2012-03-25 7:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-22 15:58 PCA GPIO interrupt triggers Peter Rusko
2012-03-24 17:02 ` Grant Likely
2012-03-25 7:40 ` Wolfram Sang [this message]
2012-03-26 10:27 ` PCA GPIO interrupt triggers, matrix-keypad Peter Rusko
2012-03-27 7:54 ` Wolfram Sang
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