On Fri, 2016-12-30 at 12:05 +0000, Jose Abreu wrote: > ++dw-dmac Maintainers > > > On 30-12-2016 11:32, Jose Abreu wrote: > > Hi All, > > > > > > I am going to work with dw-dmac AHB controller and I wanted to > > use SND_DMAENGINE_PCM. In order to use this, a standard DMA > > driver with cyclic support is needed. I found out that dw-dmac is > > capable of cyclic transfers but instead of using the DMA engine > > standard cyclic API it uses a custom API. Is there any specific > > reason for this? What is the effort to change the custom API to a > > standard DMA engine cyclic API? > > Because it was a predecessor of generic implementation. I used to have some semi-finished patch to switch to generic API, though at that point I had no means to test it. Since I eventually got iDMA 32-bit, which is used as LPE Audio DMA engine, support in my branch I might test it in the future, though I think someone else would be much faster than me. So, I can share whatever I have to the topic with someone who is really interested to do that task. -- Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Intel Finland Oy -- 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
