2009/5/13 Robert Jarzmik <robert.jarzmik@xxxxxxx>: > Hi Mark and Dimitry, > > I've been playing for some time with DMA on the PXA series. I was wondering if > the behaviour of pxa2xx-pcm is correct. > > As far as I understand, in an asoc context, the __pxa2xx_pcm_open() is called, > while in "arm context", pxa2xx_pcm_open() is called, which calls > __pxa2xx_pcm_open(). > > This was introduced by commit a6d77317678148c973bb0131cc5a3a772f756d23 I think. > > One main difference is that in "arm context", pxa_dma_request() is called, while > in "asoc context", it is not. This was done by intent as before code merge plain ARM driver used DMA while ASoC didn't. That was done mainly because I didn't have all the hw variants (only pxa255 at hand) and didn't want to introduce any points of possible failure. Now merging DMA code into generic code path would be a nice feature though. > I'd like one of you to cross-check, as I must admit I'm not following all the > impacts of the pcm code split-up. The initial impact of the merge should be void, as it was an _unification_ of code presented in ASoC and non-ASoC drivers. -- With best wishes Dmitry _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
