linux-kernel - Re: [PATCH v2 1/3] mfd: Add irq domain support for max8998 interrupts

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Date:	Fri, 21 Jun 2013 15:31:50 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Tomasz Figa <t.figa@...sung.com>
Cc:	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Kukjin Kim <kgene.kim@...sung.com>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Grant Likely <grant.likely@...aro.org>,
	Jiri Kosina <jkosina@...e.cz>,
	Liam Girdwood <lgirdwood@...il.com>,
	Masanari Iida <standby24x7@...il.com>,
	Rob Herring <rob.herring@...xeda.com>,
	Rob Landley <rob@...dley.net>, rtc-linux@...glegroups.com,
	Russell King <linux@....linux.org.uk>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Kyungmin Park <kyungmin.park@...sung.com>
Subject: Re: [PATCH v2 1/3] mfd: Add irq domain support for max8998 interrupts

On Fri, Jun 21, 2013 at 02:33:35PM +0200, Tomasz Figa wrote:

> The reverse mapping method used is linear mapping since the sub-drivers
> of max8998 such as regulator and charger drivers can use the max8998
> irq_domain to get the virtual irq number for max8998 interrupts.

> All uses of irq_base in platform data and max8997 driver private data
> are removed.

Can you use a simple IRQ domain in order to continue to support non-DT
systems (not all architectures use DT...)?

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