PXA270 audio problem

[Eric Miao]

On Thu, Sep 23, 2010 at 1:33 PM, Santhosh N <san.mlists at gmail.com> wrote:
> Dear All,
>
> I am running linux 2.6.26 kernel on a PXA270 board. A UCB1400 chip
> used for audio and touchscreen in that. I have been facing a problem
> with audio.
>
> The audio plays properly, but suddenly stops. I get the following message:
> ALSA sound/core/pcm_native.c:1513: playback drain error (DMA or IRQ trouble?)
>
> I have noticed that the DMA interrupts stop coming. Where as the AC97
> interrupts come properly.
>
> Any help in solving this will be grateful.
>

Dumping the DMA registers and the AC97 controller registers would
be helpful.

> Regards,
> Santhosh N
>
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