[alsa-devel] Please help in adding ams-delta support to ASoC

Janusz Krzysztofik jkrzyszt at tis.icnet.pl
Mon Jun 15 15:22:34 CEST 2009

Janusz Krzysztofik napisał(a):
> Important or not, I have to fine down my provious reports on what works 
> and what does not:
> - original patch applied with other ams-delta related patches
>   on linux-omap-2.6.16, as it was designed for:
>   - playback: works, with both aplay and >/dev/dsp,
>   - capture: works with </dev/dsp, gives null output with arecord
> - original patch ported to the last l-o commit supporting omap-alsa:
>   - playback: works as before,
>   - capture: both </dev/dsp and arecord give null output,
>     but DMA interrupts still work.

Not that I would see it as a real progress, but to clarify things: I 
have managed to solve this particular problem with capture by patching 
sound/arm/omap/omap-alsa.c (call omap_get_dma_dst_pos() instead of 
omap_get_dma_src_pos() from audio_get_dma_pos() in case of (stream_id == 
SNDRV_PCM_STREAM_CAPTURE)). The original code stopped working after 
changes introduced to omap_get_dma_src_pos() with this patch: 

Unfortunatelly ;), sound/soc/omap/omap-pcm.c does it correctly without 

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