Jarkko Nikula wrote:
On Wed, 5 Aug 2009 10:21:49 +0300 Jarkko Nikula jhnikula@gmail.com wrote:
If my analysis is correct, the best solution I can see would be starting McBSP transfer for one direction only, not both, so the opposite direction can be started when needed. That requires deeper and wider OMAP knowledge and a change in omap_mcbsp_start() API though. I am not in a position to deal with this myself, I'm afraid.
I favor this change. Actually I remember I was thinking shortly to change API of omap_mcbsp_start and _stop more than year back or so but didn't find it necessary back then.
I think change will be trivial. Basically two new arguments indicating are the TX/RX active and let the first/last caller to deal with sample-rate generator and frame sync activation/de-activation.
I hacked a patch below. Can you test does it help?
Will do tonight (CET).
Now seeing how easy it was (for you ;), I think I could try to follow that way an modify omap_mcbsp_config() in the same spirit, if you find it of any use.
Cheers, Janusz