Re: [PATCH/RFC] dmaengine: add a slave parameter to __dma_request_channel()

From: Guennadi Liakhovetski
Date: Wed Mar 07 2012 - 07:46:43 EST


On Wed, 7 Mar 2012, Guennadi Liakhovetski wrote:

> 2. (goal: eliminate filter function look-ups) proposed by Linus W
>
> (a) client issues
> dma_request_slave_channel(dev, "MMC-RX")
> (b) the dmaengine core scans a platform-provided list of channel mappings
> and picks up _the_ correct channel (****)

I think, this could work well with Russell's idea to implement virtual DMA
channels centrally in dmaengine core.

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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