Re: [PATCH v3] dmaengine: s3c24xx: Add dma_slave_map for s3c2440 devices
From: Vinod Koul
Date: Mon Sep 26 2016 - 13:35:20 EST
On Thu, Sep 22, 2016 at 08:51:15PM +0200, Sam Van Den Berge wrote:
> This patch updates the s3c24xx dma driver to be able to pass a
> dma_slave_map array via the platform data. This is needed to
> be able to use the new, simpler dmaengine API .
> I used the virtual DMA channels as a parameter for the dma_filter
> function. By doing that, I could reuse the existing filter function in
> I have tested this on my mini2440 board with the audio driver.
> According to my observations, dma_request_slave_channel in the
> function dmaengine_pcm_new in the file
> sound/soc/soc-generic-dmaengine-pcm.c now returns a valid DMA channel
> whereas before no DMA channel was returned at that point.
> Entries for DMACH_XD0, DMACH_XD1 and DMACH_TIMER are missing because I
> don't realy know which driver to use for these.