linux-kernel - Re: [PATCH 5/8] mfd: Provide the PRCMU with its own IRQ domain

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Date:	Mon, 20 Aug 2012 17:29:23 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Lee Jones <lee.jones@...aro.org>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	STEricsson_nomadik_linux@...t.st.com, linus.walleij@...ricsson.com,
	Samuel Ortiz <sameo@...ux.intel.com>
Subject: Re: [PATCH 5/8] mfd: Provide the PRCMU with its own IRQ domain

On Mon, Aug 20, 2012 at 01:55:32PM +0100, Lee Jones wrote:

> Right, that was the initial intention. It would be a trivial semantic
> change if drivers without DT support wished to use the functionality
> though. However, the only examples I found of a non-DT enabled driver
> that could make good use of it in order to strip out some cruft would
> be the Arizona and one of the Samsung drivers, and they each have

All of the regmap devices could use this.

> their own hand-rolled methods of hwirq -> virq conversion now, so any
> change to support them would result in multiple invocations of
> irq_create_mapping which would likely cause breakage.

Multiple calls to irq_create_mapping() are totally fine.

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