[PATCH v3 1/2] irqchip: intc-irqpin: Add support for shared interrupt lines

[Bastian Hecht]

Hi Simon,

2013/3/27 Simon Horman <horms at verge.net.au>:
> On Tue, Mar 26, 2013 at 12:18:18PM +0100, Bastian Hecht wrote:
>> On some hardware we don't have a 1-1 mapping from the external
>> interrupts coming from INTC to the GIC SPI pins. We can however
>> share lines to demux incoming IRQs on these SoCs.
>>
>> This patch enables the intc_irqpin driver to detect requests for shared
>> interrupt lines and demuxes them properly by querying the INTC INTREQx0A
>> registers.
>>
>> If you need multiple shared intc_irqpin device instances, be sure to mask
>> out all interrupts on the INTC that share the one line before you start
>> to register them. Else you run into IRQ floods that would be caused by
>> interrupts for which no handler has been set up yet when the first
>> intc_irqpin device is registered.
>>
>> Signed-off-by: Bastian Hecht <hechtb+renesas at gmail.com>
>> Acked-by: Magnus Damm <damm at opensource.se>
>
> Thanks, I will see about queuing up these changes for v3.10.
>
>
> I believe that with these changes it should be possible to rebase/rework
> armadillo800eva-reference so that it no longer uses the unmerged INTC
> DT bindings. Would it be possible for you to see about making a fresh
> version of armadillo800eva-reference that is based on the next branch
> in the Renesas tree plus this series of two patches?

yes ok, I'll prepare a new armadillo reference version. The patches
were based on all+next, but I'll post a v4 rebased on next.
I'll post a separate patch series for the reference code if you don't
mind, as this might take a few days to be done.

Thanks,

 Bastian