On Mon, May 26, 2014 at 9:47 AM, Hans de Goede [off-list ref] wrote:

From: Chen-Yu Tsai <redacted>

The irq/pin mapping is used to lookup the pin to mux to the irq
function when the irq is enabled. It is created when gpio_to_irq
is called. Creating the mapping during init allows us to map the
interrupts directly from the device tree.

Signed-off-by: Chen-Yu Tsai <redacted>
Signed-off-by: Hans de Goede <redacted>

This is exactly correct. Patch applied.

I tried to hack the sunxi driver to even use the gpiolib
irqchip helpers but exactly this complex map thing in
->irq_array[] git me stuck. If any of you guys could be so
nice to take a stab at this (compare to other commits
converting drivers to use gpiolibs irqchip helpers) then
I'd be very happy.

Yours,
Linus Walleij