From: David Brownell <dbrownell@users.sourceforge.net>
Date: Thu, 16 Oct 2008 05:03:14 +0000 (-0700)
Subject: gpiolib: gpio_to_irq() hooks
X-Git-Tag: v2.6.28-rc1~424
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0f6d504e73b49374c6093efe6aa60ab55058248a;p=pandora-kernel.git

gpiolib: gpio_to_irq() hooks

Add a new gpiolib mechanism: gpio_chip instances can provide mappings
between their (input) GPIOs and any associated IRQs.  This makes it easier
for platforms to support IRQs that are provided by board-specific external
chips instead of as part of their core (such as SOC-integrated GPIOs).

Also update the irq_to_gpio() description, saying to avoid it because it's
not always supported.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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