linux-kernel - Re: [PATCH v2] ASoC: omap: convert per-board modules to platform drivers

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Date:	Sat, 10 Sep 2011 22:37:15 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	"Russell King - ARM Linux" <linux@....linux.org.uk>
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	alsa-devel@...a-project.org, Liam Girdwood <lrg@...com>,
	Tony Lindgren <tony@...mide.com>,
	Jassi Brar <jassisinghbrar@...il.com>,
	linux-kernel@...r.kernel.org, Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.de>,
	Jarkko Nikula <jhnikula@...il.com>,
	linaro-dev@...ts.linaro.org, linux-omap@...r.kernel.org,
	Mans Rullgard <mans.rullgard@...aro.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] ASoC: omap: convert per-board modules to platform drivers

On Friday 09 September 2011, Russell King - ARM Linux wrote:
> That's just twisted and utterly insane - adding more code for precisely
> zero benefit what so ever.  Think about it - the device tree is already
> creating platform devices for entries in the device tree file.  What's
> the point of having this special ASoC code look up the platform compatible
> property in a table of strings to find a different string to manually
> create a device with.  Why not just add the bloody device to the DT
> file in the first place?  That's partly what DT is there for - to create
> platform specific struct devices.

Exactly. No driver or (worse) user program should ever need to look at
the top-level compatible property. When you want information about a
localized part of the system (e.g. the ASoC components), you should
look up the information for that component.

	Arnd
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