gpio: pcf857x: enable gpio_to_irq() support

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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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This commit is contained in:

Kuninori Morimoto 2012-06-14 19:40:41 -07:00 • committed by Linus Walleij

parent 7cb6580c0b

commit 6e20a0a429

2 changed files with 125 additions and 0 deletions

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122

drivers/gpio/gpio-pcf857x.c

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3

include/linux/i2c/pcf857x.h

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