From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Fri, 15 Jun 2012 02:40:41 +0000 (-0700)
Subject: gpio: pcf857x: enable gpio_to_irq() support
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~45^2~30
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6e20a0a429bd4dc07d6de16d9c247270e04e4aa0;p=pandora-kernel.git

gpio: pcf857x: enable gpio_to_irq() support

pcf857x chip has some pins, but interrupt pin is only 1 pin.
And gpiolib requests 1 interrupt per 1 gpio pin.

Thus, this patch added demuxed irq to pcf857x driver,
and enabled gpio_to_irq().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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