linux-kernel - Re: [PATCH 1/2] mfd: add irq domain support for max8997 interrupts

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Date:	Fri, 9 Dec 2011 14:39:13 +0800
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Thomas Abraham <thomas.abraham@...aro.org>
Cc:	linux-kernel@...r.kernel.org, rpurdie@...ys.net,
	rob.herring@...xeda.com, grant.likely@...retlab.ca,
	kgene.kim@...sung.com, myungjoo.ham@...sung.com,
	kyungmin.park@...sung.com, dg77.kim@...sung.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH 1/2] mfd: add irq domain support for max8997 interrupts

On Fri, Dec 09, 2011 at 12:00:07PM +0530, Thomas Abraham wrote:

> If these gpio's are connected to the host system, and host system sets
> up gpio interrupt notification for these gpio lines, the linux irq
> number for the gpio interrupt would belong to the irq domain of the
> host interrupt controller (gic irq domain in case of exynos).
> Consumers of this interrupt would use the gpio interrupt independent
> of the max8997 irq domain. So irq_base can be maintained private to
> the max8997 mfd driver and its sub-block drivers.

How would you provide this interrupt to the device using it in a non-DT
systemm without passing the irq_base into the device as platform data?
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