[PATCH 2/4] pinctrl: sunxi: Add external interrupts support
linus.walleij at linaro.org
Mon Jun 10 09:54:20 EDT 2013
On Sat, Jun 8, 2013 at 12:05 PM, Maxime Ripard
<maxime.ripard at free-electrons.com> wrote:
> The port controller IP found in the Allwinner A10 and A13 can use few of
> the pins it manage as an interrupt source, called external interrupts in
> the datasheet.
> The number of these external interrupts are SoCs specific, but the
> current upper limit is 32. In order to work, the external interrupts'
> pins have to be muxed to a specific function to generate an interrupt.
> This patch adds the irqchip and the needed logic to use the PIO
> controller as an interrupt controller.
> Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>
Pretty complicated but I think I understand it at last...
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