Re: [PATCH] dma: mmp-tdma: refine dma disable and dma-pos update

[Zhangfei Gao]

On 5 February 2015 at 20:54, Qiao Zhou <zhouqiao@xxxxxxxxxxx> wrote:
> Below are the refinements.
> 1. Set DMA abort bit when disabling dma channel. This will clear
> the remaining data in dma FIFO, to fix channel-swap issue.
> 2. Read DMA HW pointer when updating DMA status. Previously dma
> position is calculated by adding one period size in dma interrupt.
> This is inaccurate/insufficient for some high-quality audio APP.
> Since interrupt bottom half handler has variable schedule delay,
> it causes big error when calculating sample delay. Read the actual
> HW pointer and feedback can improve the accuracy.
> 3. Do some minor code clean.
>
> Signed-off-by: Qiao Zhou <zhouqiao@xxxxxxxxxxx>

Acked-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx>

Thanks
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