From: Haojian Zhuang <haojian.zhuang@marvell.com>
Date: Mon, 18 Apr 2011 14:12:46 +0000 (+0800)
Subject: gpio/pca953x: Add support for pca9574 and pca9575 devices
X-Git-Tag: v3.0-rc1~30^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=33226ffd0726508da1eeb660170a63100f4456ac;p=pandora-kernel.git

gpio/pca953x: Add support for pca9574 and pca9575 devices

PCA957x is i2c gpio expander, and similar to PCA953x. Although register
configurations are different between PCA957x and PCA953x. They can share
a lot of components, such as IRQ handling, GPIO IN/OUT. So updating PCA953x
driver to support PCA957x chips.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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