[alsa-devel] [PATCH 2/3] ASoC: Blackfin: add multi-channel supporting in Blackfin ASoC driver and AD1980 codec driver

Mark Brown broonie at sirena.org.uk
Tue Oct 21 11:49:16 CEST 2008

On Tue, Oct 21, 2008 at 05:48:56PM +0800, Cai, Cliff wrote:
> >From: Takashi Iwai [mailto:tiwai at suse.de] 

> >But, CONFIG_SND_MULTICHAN_SUPPORT would change any buffer 
> >allocation behavior?  I don't find it...

> It will change the ac97 frame size defined in bf5xx-ac97.h,the frame
> size the basic unit of the DMA buffer 

So this is purely a restriction in the driver, rather than a property of
the hardware - is there any reason why you can't change the size of
buffer that you allocate at runtime?

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