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

[Simon Horman]

On Wed, Mar 27, 2013 at 11:04:56PM +0900, Simon Horman wrote:
> On Wed, Mar 27, 2013 at 02:50:05PM +0100, Bastian Hecht wrote:
> > 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.
> 
> Thanks, sorry for the bother.
> 
> I have just pushed a fresh next branch and taged it as
> renesas-next-20130327. If you quote that as your base I should
> be able to apply your series without a hitch.

Sorry, I missed that you had already posted v4. Thanks!

> > 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.
> 
> Sure, no problem.
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