Mark Brown wrote:
> On Thu, Jan 15, 2009 at 02:54:54PM -0500, Hugo Villeneuve wrote:
>> Mark Brown <[email protected]> wrote:
>
>>>> The breakage I see when I run the aplay utility is this:
>
>>>> aplay: pcm_write:1394: write error: Input/output error
>
>>>> davinci-git version is the latest as of january 14
>>>> (2.6.28-davinci1-06546-gcfb152b)
>
>>> Hrm, OK. That's not terribly informative - does the error get
>>> reported after about 10 seconds by any chance? I suspect that DMA
>>> just isn't happening.
>
>> Sorry about the non-verbosity :)
>
> I actually meant the error message rather than your posting, sorry!
>
>> Yes it happens almost exactly after 10 seconds. I?m not an expert with
>> audio nor DMA, but can you indicate me where I should be looking for
>> signs of trouble (which source files for example)?
>
> sound/soc/davinci/davinci-pcm.c and the underlying DMA APIs it calls. I
> wouldn't be surprised if either there had been some change in the DMA
> APIs that required an update in the driver or the DMA APIs haven't been
> fully merged.
>
> Hopefully a comparison of the mainline and DaVinci trees will show
> something...
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In davinci-sffsdr.c I see
ret = snd_soc_dai_set_fmt(cpu_dai,
SND_SOC_DAIFMT_RIGHT_J |
SND_SOC_DAIFMT_CBM_CFS |
SND_SOC_DAIFMT_IB_NF);
When I changed the evm board flags passed, I didn't change this file. So,
you'll need something like
ret = snd_soc_dai_set_fmt(cpu_dai,
SND_SOC_DAIFMT_DSP_A |
SND_SOC_DAIFMT_CBM_CFS |
SND_SOC_DAIFMT_NB_NF);
But, you should be seeing error messages.
Troy
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