On Tue, Feb 24, 2015 at 04:21:22PM +0200, Peter Ujfalusi wrote: > Do not direct map the virtual channels to sDMA request number. When the > sDMA is behind of a crossbar this direct mapping can cause situations when > certain channel can not be requested since the crossbar request number > will no longer match with the sDMA request line. > The direct mapping for virtual channels with HW request lines will make it > harder to implement MEM_TO_MEM mode for the driver. I assume when you talk about MEM_TO_MEM, you're referring to a DMA_MEMCPY driver. mem2mem should not be handled by the slave driver. This should be a separate DMA engine driver structure which does not have DMA_SLAVE set. See how amba-pl08x handles this. -- FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up according to speedtest.net. -- 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
