linux-kernel - RE: [PATCH 1/7] DMAENGINE: add generic PrimeCell interface to COH 901 318 v6

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Message-ID: <CEE6BB42CAD6E947908279175AF8470A025A6DE7DA@EXDCVYMBSTM006.EQ1STM.local>
Date:	Wed, 12 May 2010 09:24:06 +0200
From:	Linus WALLEIJ <linus.walleij@...ricsson.com>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	Russell King - ARM Linux <linux@....linux.org.uk>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/7] DMAENGINE: add generic PrimeCell interface to COH
 901 	318 v6

[Dan]

> What happens when two primecell dma devices are present on one soc?
> Can that happen?

Of course it can happen. In theory... There is no such system that
I'm aware of.

Peter's PL08x driver even model the PL08x as a singleton, i.e. a
static struct in the driver file.

> In that case we'll have conflicting providers of
> dma_set_ambaconfig().

Yes...

Linus
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