Re: [PATCH 4/5] dmaengine: sprd: Add Spreadtrum DMA configuration

[Baolin Wang]

On 16 April 2018 at 23:35, Vinod Koul <vinod.koul@xxxxxxxxx> wrote:
> On Mon, Apr 16, 2018 at 02:32:05PM +0800, Baolin Wang wrote:
>
>> >> Beside the general configuration, our audio driver will configure the
>> >> fragment length, block length, maybe transaction length, and they must
>> >> specify the request type and interrupt type, these are what we want to
>> >> export for users.
>> >
>> > As I said before, you need to derive fragment, block or transaction from
>>
>> I am sorry I did not make things clear here. What I mean is not only
>> link list mode(prep_cyclic), but also other modes (prep_slave,
>> prep_interleaved ...), users still need to configure the fragment
>> length, block length or transaction length according to their
>> requirements.
>
> Other modes are similar, they also use the parameters programmed from
> dma_slave_config. Pls see other driver examples. IIRC dw dma has
> similar capabilities but not all are exposed to user and driver configures.

I'll check the dw dma. Really thanks for your help :)

-- 
Baolin.wang
Best Regards