linux-kernel - Re: [RFC 3/8] mfd:syscon: Introduce claim/read/write/release APIs

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Message-ID: <20130509144055.GF3200@sirena.org.uk>
Date:	Thu, 9 May 2013 15:40:55 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Srinivas KANDAGATLA <srinivas.kandagatla@...com>
Cc:	Arnd Bergmann <arnd@...db.de>, dong.aisheng@...aro.org,
	sameo@...ux.intel.com, Rob Landley <rob@...dley.net>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Russell King <linux@....linux.org.uk>,
	Linus Walleij <linus.walleij@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.cz>,
	Stuart Menefy <stuart.menefy@...com>,
	Shawn Guo <shawn.guo@...aro.org>,
	Olof Johansson <olof@...om.net>,
	Jason Cooper <jason@...edaemon.net>,
	Stephen Warren <swarren@...dia.com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Nicolas Pitre <nico@...aro.org>,
	Will Deacon <will.deacon@....com>,
	Dave Martin <dave.martin@...aro.org>,
	Marc Zyngier <marc.zyngier@....com>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org,
	linux-arm-kernel@...ts.infradead.org, linux-serial@...r.kernel.org
Subject: Re: [RFC 3/8] mfd:syscon: Introduce claim/read/write/release APIs

On Thu, May 09, 2013 at 03:00:16PM +0100, Srinivas KANDAGATLA wrote:

> Some of layouts of the sysconf registers are totally changed for each SOC.

> Looking at driver by driver maybe some drivers can take advantage of the
> patterns, but Am not sure if this will be a sustainable solution for all
> the drivers.

So what exactly is the driver doing then?  If the register maps look
nothing like each other then what's the common functionality the driver
is providing?

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