Dnia 2012-04-03, wto o godzinie 18:09 +0300, Vasily Khoruzhick pisze:
Probably it's lpc313x limitation (CPU DAI does not support duplex?)
Do you know how to check if this is hardware limitation ? I have reviewed documentation and from my point of view it should work. http://ics.nxp.com/products/lpc3000/datasheet/lpc3130.lpc3131.pdf
Anyway, looks like its code is not upstreamed.
Yes, I didn't notice before, that all code comes from this patch (for kernel 3.2):
http://www.lpclinux.com/pub/Forums/ForumLPC313x0055/lpc.tar.gz
The other question is why there are two drivers to the same device.AFAIK there's only one driver for uda1380 codec.
I've found separete folders for samsung and lpc in sound/soc/ and I suspected that there are two separate drivers. As I understand now, there is only separate intermediary layer. The files in those folders are quite different, so I don't know how to compare them, to find the difference. In mean time. I have received the following respone from lpclinux: ===== As I understand,it is the SW limitation limitation because of which we can not use playback & capture feature simultaneously. The audio driver code is based on ALSA framework available in sound/soc/lpc313x. Please give it a try & let us know about the results ===== I'll be glad, if can take a look at this code. or just give me some direction.