linux-kernel - Re: [PATCH 1/7] mfd: add imx syscon driver based on regmap

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Date:	Thu, 23 Aug 2012 12:06:47 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Dong Aisheng <b29396@...escale.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linus.walleij@...ricsson.com" <linus.walleij@...ricsson.com>,
	"s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
	"shawn.guo@...aro.org" <shawn.guo@...aro.org>,
	"kernel@...gutronix.de" <kernel@...gutronix.de>,
	"grant.likely@...retlab.ca" <grant.likely@...retlab.ca>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"sameo@...ux.intel.com" <sameo@...ux.intel.com>,
	"lrg@...com" <lrg@...com>,
	Zhao Richard-B20223 <B20223@...escale.com>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"swarren@...dotorg.org" <swarren@...dotorg.org>,
	"paul.liu@...aro.org" <paul.liu@...aro.org>
Subject: Re: [PATCH 1/7] mfd: add imx syscon driver based on regmap

On Thu, Aug 23, 2012 at 03:26:30PM +0800, Dong Aisheng wrote:
> On Thu, Aug 23, 2012 at 12:02:41AM +0800, Mark Brown wrote:

> > It'd be good to provide a way of retrieving the regmap so that drivers
> > for subsystems with generic regmap code could use the framework features
> > (regulator is one example that I just mentioned in my other mail).

> Do you mean something like:
> regmap = syscon_regmap_dev_lookup(np, "fsl,anatop");
> regmap_write(regmap, reg, val);

> Then drivers can use generic regmap framework features rather than depend
> on what imx-syscon implemented, is that correct?

Yes, this is mainly for cases where the subsystem has helper functions
that can work with regmap.

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