On Friday 28 August 2009, Tivy, Robert wrote: > > > > And a fairly trivial thing to implement too ... just a driver > > model call to walk the platform_bus devices, then an array > > iteration to find the DMA resources. > > Is this something that can be implemented today, with the current > driver model,
Yes; bus_for_each_dev(&platform_bus_type, ...) then using platform_device.resource[] to check for channels. > or would it need some new information to be added to every DMA-using > driver? (sorry for asking you to educate me, but I'm just not that > familiar with all the driver specifics) Given they fetch their channels correctly (as resources), all the data is already in place. ASoC was trouble in the past; fixed now, I hope. > > > > The > > > > LinuxUtils EDMA driver has a strong need for EDMA_ANY type of > > > > allocation, to support memory-to-memory transfers by > > codecs, mostly. > > > > My suggestion made many such channels available. > > > > Great. BTW, I've been told that future codecs would want on the > order of 50 EDMA_ANY-type channels. Sounds a bit excessive; like they needlessly refuse to share those resources! But if that's on hardware with channels to burn, so be it. - Dave _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
