From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Horman Date: Wed, 27 Mar 2013 04:59:42 +0000 Subject: Re: [PATCH v3 1/2] irqchip: intc-irqpin: Add support for shared interrupt lines Message-Id: <20130327045942.GH25431@verge.net.au> List-Id: References: <1364296699-20919-1-git-send-email-hechtb+renesas@gmail.com> In-Reply-To: <1364296699-20919-1-git-send-email-hechtb+renesas@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org 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 > Acked-by: Magnus Damm 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?