On Tue, Mar 11, 2014 at 08:54:32PM +0800, Nicolin Chen wrote:
Adding Jyri who's been looking at this as well but not added anyone else working on simple-card so you might've missed his mails.
It's pretty fair to do it for DAIFMT_INV since two dais might have differnt definitions in their drivers even though it'd be better to keep it same if we could.
No, that's not at all OK - anything that requires this is broken. The same DAI format should be usable by both ends of the link unless the board itself is inverting one of the signals or something.
Thus this patch fixes it by overwriting the DAIFMT_MASTER bit of cpu_dai->fmt with the one of codec_dai->fmt since we defined DAIFMT_MASTER basing on CODEC at the first place.
This seems closer to what I'd expect for something like this but it does mean that any format settings on the CPU DAI will be ignored (rather than say warning or something). I'm not sure this is a bad thing though, probably wants the binding documenting at least.