linux-kernel - Re: [PATCH v3 1/1] dw_dmac: add cyclic API to DW DMA driver

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Message-ID: <e9c3a7c20904011546l4e540709t933b15adfbeaf4be@mail.gmail.com>
Date:	Wed, 1 Apr 2009 15:46:39 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	Haavard Skinnemoen <haavard.skinnemoen@...el.com>
Cc:	Hans-Christian Egtvedt <hans-christian.egtvedt@...el.com>,
	linux-kernel@...r.kernel.org, maciej.sosnowski@...el.com
Subject: Re: [PATCH v3 1/1] dw_dmac: add cyclic API to DW DMA driver

On Wed, Apr 1, 2009 at 6:52 AM, Haavard Skinnemoen
<haavard.skinnemoen@...el.com> wrote:
> Hans-Christian Egtvedt wrote:
>> This patch adds a cyclic DMA interface to the DW DMA driver. This is
>> very useful if you want to use the DMA controller in combination with a
>> sound device which uses cyclic buffers.
>>
>> Using a DMA channel for cyclic DMA will disable the possibility to use
>> it as a normal DMA engine until the user calls the cyclic free function
>> on the DMA channel. Also a cyclic DMA list can not be prepared if the
>> channel is already active.
>>
>> Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@...el.com>
>
> Acked-by: Haavard Skinnemoen <haavard.skinnemoen@...el.com>

Thanks, applied.
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