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Date:	Sun, 25 Mar 2012 09:40:12 +0200
From:	Wolfram Sang <>
To:	Peter Rusko <>
Cc:	Grant Likely <>,
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 :)



Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 |  |

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