I did have to add a getposition accessor to the DaVinci DMA module, which is used by the pcm_pointer function. Other than that, I believe the ASoC should build. My test is simply to run aplay or speaker-test, then quit and run it again. The first run is audible, the second and subsequent runs are not audible until I provide a manual DMA event trigger.
Mark
Caglar Akyuz wrote:
Mark Lokowich wrote:
I've been using the DaVinci ASoC for a few months and have recently upgraded to the 2.6.26 based DaVinci git kernel. Now my audio DMA stalls more readily after stopping an active stream. I can manually trigger the event by poking the ESR to reactivate the stalled stream, suggesting the problem is in the ASP-to-DMA XEVT interface. This problem is less prevalent in the 2.6.25 based kernel. Any help?
I don't know if this helps but, I am using ASoC code on my DaVinci board with latest git kernel(2.6.27) and I have no visible issues with the ASoC code. However, there may be some code-coverage issue with my usage so if you have any test method to verify that I really don't have your problem I'll be happy to perform some tests.
My real concern is that this code has never been built without any problems here. First there was a separate asoc branch in davinci tree which failed to built. I tried with 2.6.25 and there was again build issues. Finally I wasn't able to build ASoC code with 2.6.27 so I tried to patch it. I think some part of it relies on some dma code which is not present in davinci tree.[1] I don't know if everybody else is patching kernel source to build asoc support, maybe I'm doing something wrong. I'm not sure, just FYI.
Regards, Caglar
[1] http://linux.omap.com/pipermail/davinci-linux-open-source/2008-March/005920....