Re: [PATCH 2/2 v2] dmaengine: rcar-audmapp: independent from SH_DMAE_BASE v2

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Hi Vinod

> > This rcar-audmapp driver is very limited usage, and user is only sound device/driver.
> > Sound driver configures both 1st/2nd DMAC if needed (it depends on platform).
> > Sound driver knows all reg address / mem address which are needed for 1st/2nd DMAC settings.
> > 1st/2nd DMAC needs general DMAEngine settings method, not special. 
> > Now, sound driver + 1st/2nd DMAC works well on my local environment.
> Are you not using the sound dmaengine library then, right?

At this point, yes.
But, I got request from Mark to use it
# current dmaengine "method" on my driver is same as library.
# but I need to fix non-dmaengine area

> One more question, audio data will be in system memory and then it needs to
> be transfered to periphral FIFO, how will data travel thru these two DMAs?

like this

    1st DMA            2nd DMA
[mem] -> [periphral IP-A] -> [periphral IP-B] -> speaker

Best regards
---
Kuninori Morimoto
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