linux-kernel - Re: PCA GPIO interrupt triggers

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Date:	Sun, 25 Mar 2012 09:40:12 +0200
From:	Wolfram Sang <w.sang@...gutronix.de>
To:	Peter Rusko <rusko.peter@...lan.hu>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	linux-kernel@...r.kernel.org
Subject: Re: PCA GPIO interrupt triggers


> 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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