linux-kernel - Re: [PATCH] Add dynamic MMC-over-SPI-GPIO driver

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Date:	Tue, 15 Jul 2008 15:06:49 +1000
From:	Ben Nizette <bn@...sdigital.com>
To:	Michael Buesch <mb@...sch.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	David Brownell <david-b@...bell.net>,
	Piot Skamruk <piotr.skamruk@...il.com>,
	Pierre Ossman <drzeus-mmc@...eus.cx>,
	openwrt-devel@...ts.openwrt.org
Subject: Re: [PATCH] Add dynamic MMC-over-SPI-GPIO driver


On Mon, 2008-07-14 at 21:09 +0200, Michael Buesch wrote:
> This driver provides a sysfs interface to dynamically create
> and destroy GPIO-based MMC/SD card interfaces.
> So an MMC or SD card can be connected to generic GPIO pins
> and be configured dynamically from userspace.

Can you use mmc-spi attached to spi-gpio and be done with it?  Sure you
won't have the dynamic alloc capability but you won't be reinventing the
wheel either.  You don't have dynamic creation for any other platform
device and if you need it then, IMO, it'd be better solved in a more
generic way.

btw, what's this spi-gpio thing?  I can't see it in mainline except in a
s3c24xx specific way.  My domestic blindness??

	--Ben.


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