From 3221f40b7631183b0c7a2e5d4be00cab12d983c3 Mon Sep 17 00:00:00 2001
From: Yingjoe Chen <yingjoe.chen@mediatek.com>
Date: Tue, 27 Jan 2015 14:15:26 +0800
Subject: [PATCH] pinctrl: mediatek: emulate GPIO interrupt on both-edges

MTK EINT does not support generating interrupt on both edges.
Emulate this by changing edge polarity while enable irq,
set types and interrupt handling. This follows an example of
drivers/gpio/gpio-mxc.c.

Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com>
Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Acked-by: Hongzhou Yang <hongzhou.yang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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