[alsa-devel] [PATCH 1/4] ASoC: pxa-ssp: enhance I2S and add Left_J support

[Daniel Ribeiro]

Em Seg, 2009-06-08 às 19:06 +0100, Mark Brown escreveu:
> Think about TDM mode for a minute here - there a separate configuration
> for the sample size on the wire opens the way to using a lower sample
> size in a given timeslot than the timeslot supports, reducing the need
> for the CPU to rewrite data.  Or to put it another way, I can't see TDM
> mode working unless the sample size is constrained to always be exactly
> that desired so it seems sensible to have a standard way of doing that.

Hum... Now I understood this. If i want to use network mode with 2
different codecs, and they differ on the expected frame_size i have to
use the smaller frame_size for both codecs.

And indeed, in this case the best place to setup the frame size would be
on set_tdm_slot().

> I'd rather come up with a cleaner way of configuring the magician case
> that's explicit about what it's trying to achieve.  It doesn't need to
> be in user space, though.

I dont know how to do this other than just changing the frame size... :)

-- 
Daniel Ribeiro
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