linux-kernel - Re: [PATCH v2] dma: dw: Add suspend and resume handling for PCI mode DW

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Message-ID: <20140326062306.GM1976@intel.com>
Date:	Wed, 26 Mar 2014 11:53:06 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Chew Chiau Ee <chiau.ee.chew@...el.com>
Cc:	Viresh Kumar <viresh.linux@...il.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.jf.intel.com>,
	Dan Williams <dan.j.williams@...el.com>,
	dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org,
	Lim Lee Booi <lee.booi.lim@...el.com>
Subject: Re: [PATCH v2] dma: dw: Add suspend and resume handling for PCI
 mode DW_DMAC.

On Sat, Mar 15, 2014 at 02:02:39AM +0800, Chew Chiau Ee wrote:
> From: Chew, Chiau Ee <chiau.ee.chew@...el.com>
> 
> This is to disable/enable DW_DMAC hw during late suspend/early resume.
> Since DMA is providing service to other clients (eg: SPI, HSUART),
> we need to ensure DMA suspends after the clients and resume
> before the clients are active.
> 
> Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@...el.com>

Rather than bunch of ifdef, would make sense to provde a mcros in dmaengine core
to do so as we expect all dmaengine drivers to be late probe

Applied thanks

-- 
~Vinod
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