linux-kernel - Re: [PATCH] x86/mrst: add SFI platform device parsing code

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Date:	Thu, 23 Sep 2010 11:54:39 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Alan Cox <alan@...ux.intel.com>, linux-kernel@...r.kernel.org,
	x86@...nel.org, David Woodhouse <dwmw2@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] x86/mrst: add SFI platform device parsing code

On Thu, Sep 23, 2010 at 11:48:45AM +0100, Alan Cox wrote:
> > any of this code could ever be made generic.  The spec seems to only
> > cover the data structure, and relationships between devices seem to be
> > left to whatever convention the firmware writer feels like using, or
> > am I missing something?

> Not really no. It's basically little more than a component and IRQ list.
> The GPIO table in 0.8 exposes the GPIO lines a bit more sanely.

> In fact all that SFI provides generically pretty much fits into
> platform_foo() already because there is so little - or into the I²C or
> SPI bus data.

I believe the issue here is the handling of things where the
functionality Linux needs is implemented over multiple chips so we need
a way for the chips to find each other.
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