From: Paul Mundt <lethal@linux-sh.org>
To: linux-sh@vger.kernel.org
Subject: Re: [PATCH/RFC] dma: shdma: transfer based runtime PM
Date: Fri, 24 Jun 2011 08:55:52 +0000 [thread overview]
Message-ID: <20110624085551.GA26516@linux-sh.org> (raw)
In-Reply-To: <Pine.LNX.4.64.1106010909570.22716@axis700.grange>
On Wed, Jun 01, 2011 at 09:20:34AM +0200, Guennadi Liakhovetski wrote:
> Currently the shdma dmaengine driver uses runtime PM to save power, when
> no channel on the specific controller is requested by a user. This patch
> switches the driver to count individual DMA transfers. That way the
> controller can be powered down between transfers, even if some of its
> channels are in use.
>
> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
> ---
>
> I marked this an RFC, because it might make sense to first test it with
> Rafael's upcoming power-domain code for sh-mobile, before committing.
>
Any updates on this?
next prev parent reply other threads:[~2011-06-24 8:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-01 7:20 [PATCH/RFC] dma: shdma: transfer based runtime PM Guennadi Liakhovetski
2011-06-01 8:14 ` Koul, Vinod
2011-07-07 13:24 ` Guennadi Liakhovetski
2011-07-07 13:53 ` Koul, Vinod
2011-06-24 8:55 ` Paul Mundt [this message]
2011-06-24 9:04 ` Guennadi Liakhovetski
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