linux-kernel - Re: [PATCH 5/5] mmc: sdhci-s3c: setup pins using pinctrl interface

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Message-ID: <20120312161218.GK3110@opensource.wolfsonmicro.com>
Date:	Mon, 12 Mar 2012 16:12:18 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Thomas Abraham <thomas.abraham@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, linus.walleij@...aro.org,
	kgene.kim@...sung.com, patches@...aro.org
Subject: Re: [PATCH 5/5] mmc: sdhci-s3c: setup pins using pinctrl interface

On Mon, Mar 12, 2012 at 08:01:34PM +0530, Thomas Abraham wrote:

> Yes, I agree with your comment. I did refer to manuals of s3c24xx to
> Exynos to ensure that the samsung pinctrl driver is generic and
> reusable on all samsung soc's. I hope I have not missed out something
> important that would require additional tweaks in the samsung pinctrl
> driver. The missing bits now are gpio interrupt and wakeup interrupt
> support in the samsung pinctrl driver. Once that is complete, I
> believe it should be easy to add support for other SoC and convert the
> drivers to use pinctrl (other option being to let pinctrl driver hog
> all the mappings at boot and remove the cfg_gpio platform callbacks
> from the driver).

Yes, I don't see any fundamental problems here - it's more that either
we'll need to get all the SoCs converted over (which is a lot of work)
or we'll need to have drivers be able to cope with running either way.

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