[alsa-devel] [PATCH 2/4] soc-dai: add bitfields for hardware I2S formats

Mark Brown broonie at sirena.org.uk
Thu Mar 5 13:03:35 CET 2009

On Thu, Mar 05, 2009 at 12:31:41PM +0100, Daniel Mack wrote:
> On Thu, Mar 05, 2009 at 10:53:57AM +0000, Mark Brown wrote:

> > The other option would be to use the TDM mode interface to set this up
> > since that's roughly what it is; my main concern here is that we already
> > have two ways of doing this and I'd like to try to keep the number down
> > for consistency.

> Probably a matter of taste, but IMO TDM mode is not the place either.
> Userspace could decide sending out 24bit samples out of a sudden (which
> the CPU DAI might accept) and in this case, you'd need some special
> logic in the board file again to set up deviders, time slots etc, right?

That's why the clocking interface is generally used here - it's more

> > Yes, I'm just thinking we should be able to use the same name for this
> > with every format.

> Ok, I now call them SND_SOC_DAIFMT_FF_{UNSPEC,16BIT,24BIT,32BIT}. Are
> you fine with these names?

Yes, though I'd still prefer to use an existing interface rather than
add a new one.

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