From: Grant Likely <grant.likely@secretlab.ca>
Date: Thu, 17 May 2012 19:54:40 +0000 (-0600)
Subject: gpio: Adjust of_xlate API to support multiple GPIO chips
X-Git-Tag: v3.5-rc1~93^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d0f7cf0f3633f92ddeb767eb59cab73963d4dee;p=pandora-kernel.git

gpio: Adjust of_xlate API to support multiple GPIO chips

This patch changes the of_xlate API to make it possible for multiple
gpio_chips to refer to the same device tree node.  This is useful for
banked GPIO controllers that use multiple gpio_chips for a single
device.  With this change the core code will try calling of_xlate on
each gpio_chip that references the device_node and will return the
gpio number for the first one to return 'true'.

Tested-by: Roland Stigge <stigge@antcom.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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