linux-kernel - Re: [PATCH v2 04/15] dmaengine: Pass no_wakeup parameter via device_prep_dma

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Message-ID: <5056CE65.9080401@ti.com>
Date:	Mon, 17 Sep 2012 10:16:53 +0300
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Shawn Guo <shawn.guo@...aro.org>
CC:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>, Tony Lindgren <tony@...mide.com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Vinod Koul <vinod.koul@...el.com>, Dan Williams <djbw@...com>,
	Jarkko Nikula <jarkko.nikula@...mer.com>,
	alsa-devel@...a-project.org, linux-omap@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Janusz Krzysztofik <jkrzyszt@....icnet.pl>,
	Ricardo Neri <ricardo.neri@...com>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Barry Song <baohua.song@....com>,
	Srinidhi Kasagar <srinidhi.kasagar@...ricsson.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Vista Silicon <javier.martin@...ta-silicon.com>,
	Zhangfei Gao <zhangfei.gao@...vell.com>,
	Laxman Dewangan <ldewangan@...dia.com>
Subject: Re: [PATCH v2 04/15] dmaengine: Pass no_wakeup parameter via device_prep_dma_cyclic()
 callback

On 09/17/2012 09:34 AM, Shawn Guo wrote:
> On Thu, Sep 13, 2012 at 04:37:54PM +0300, Peter Ujfalusi wrote:
>> Change the parameter list of device_prep_dma_cyclic() so the DMA drivers
>> can receive the no_wakeup request coming from client drivers.
>> This feature can be used during audio operation to disable all audio
>> related interrupts.
>>
>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
>> CC: Nicolas Ferre <nicolas.ferre@...el.com>
>> CC: Barry Song <baohua.song@....com>
>> CC: Srinidhi Kasagar <srinidhi.kasagar@...ricsson.com>
>> CC: Russell King - ARM Linux <linux@....linux.org.uk>
>> CC: Vista Silicon <javier.martin@...ta-silicon.com>
>> CC: Zhangfei Gao <zhangfei.gao@...vell.com>
>> CC: Shawn Guo <shawn.guo@...aro.org>
>> CC: Laxman Dewangan <ldewangan@...dia.com>
>> ---
>>  drivers/dma/at_hdmac.c        | 3 ++-
>>  drivers/dma/ep93xx_dma.c      | 4 +++-
>>  drivers/dma/imx-dma.c         | 2 +-
>>  drivers/dma/imx-sdma.c        | 2 +-
>>  drivers/dma/mmp_tdma.c        | 2 +-
>>  drivers/dma/mxs-dma.c         | 2 +-
>>  drivers/dma/omap-dma.c        | 3 ++-
>>  drivers/dma/pl330.c           | 2 +-
>>  drivers/dma/sa11x0-dma.c      | 2 +-
>>  drivers/dma/sirf-dma.c        | 2 +-
>>  drivers/dma/ste_dma40.c       | 3 ++-
>>  drivers/dma/tegra20-apb-dma.c | 2 +-
>>  include/linux/dmaengine.h     | 5 +++--
>>  13 files changed, 20 insertions(+), 14 deletions(-)
>>
> API changes without updating users?

All users of this callback is updated with this patch.
The public API (dmaengine_prep_dma_cyclic) is only used by ASoC, which has
been updated by the previous patch.
Note: this part has been updated for v3.

-- 
Péter
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