On Thu, Jun 7, 2012 at 6:05 PM, Vinod Koul [off-list ref] wrote:

On Thu, 2012-06-07 at 17:59 +0800, zhangfei gao wrote:

quoted

On Thu, Jun 7, 2012 at 5:24 PM, Vinod Koul [off-list ref] wrote:

quoted

On Mon, 2012-06-04 at 14:37 +0800, Zhangfei Gao wrote:

quoted

mmp-pcm handle audio dma based on soc-dmaengine
Support mmp and pxa910

See soc-dmaengine.c. You sneed to use the library to use dmaengine.

Thanks Vinod for kind review.

Some confusion, only find sound/soc/soc-dmaengine-pcm.c.
So the driver base on the library, snd_dmaengine_pcm_open/close etc.
Replacing dma_request_channel etc.

Is it right direction?

Yes your driver should use it. See examples in other soc drivers

This driver already been ported to soc-dmaengine-pcm.c, refer
mxs-pcm.c and imx-pcm-dma-mx2.c.
Using snd_dmaengine_pcm_open, snd_dmaengine_pcm_close, etc.
Only exception is dmaengine_slave_config, since we have some specific config.

--
~Vinod