On 02/16/2015 12:14 PM, Vasily Khoruzhick wrote: > What about dropping old PXA DMA code completely? Daniel Mack did port > for most of PXA drivers to dma engine, > I've rebased his patches against 3.17 several months ago and fixed > oopses in pxamci and asoc drivers, but I didn't resubmit whole series > due to lack of time. Yes, I did the same locally. > My 3.17 tree is at [1], I've tested it on pxa270 machine (Zipit Z2), > and everything works fine so far. I guess it won't be too much work to > rebase it against linux-3.20. Rebasing is easy, but there's more to that. We should at least try to convert all drivers over to dmaengine, otherwise they will just stop working. The biggest problem that I currently see is the pxa camera driver, which also uses an advanced way of descriptor hot-linking at runtime. Last time I checked, this wasn't possible to achieve with the dma-slave API. Hence, this driver might need to be completely rewritten, which only someone with such hardware at hand can work on. Maybe the cyclic DMA support in mmp-dma already suffices for that. Robert, weren't you already working on that? Thanks, Daniel -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
