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gpio: pcf857x: enable gpio_to_irq() support
authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Fri, 15 Jun 2012 02:40:41 +0000 (19:40 -0700)
committerLinus Walleij <linus.walleij@linaro.org>
Thu, 23 Aug 2012 21:41:17 +0000 (23:41 +0200)
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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