On Wednesday 18 November 2015 16:21:26 Peter Ujfalusi wrote: > 2. non slave channel requests, where only the functionality matters, like > memcpy, interleaved, memset, etc. > We could have a simple: > dma_request_channel(mask); > > But looking at the drivers using dmaengine legacy dma_request_channel() API: > Some sets DMA_INTERRUPT or DMA_PRIVATE or DMA_SG along with DMA_SLAVE: > drivers/misc/carma/carma-fpga.c DMA_INTERRUPT|DMA_SLAVE|DMA_SG > drivers/misc/carma/carma-fpga-program.c DMA_MEMCPY|DMA_SLAVE|DMA_SG > drivers/media/platform/soc_camera/mx3_camera.c DMA_SLAVE|DMA_PRIVATE > sound/soc/intel/common/sst-firmware.c DMA_SLAVE|DMA_MEMCPY > > as examples. > Not sure how valid are these... It's usually not much harder to separate out the legacy case from the normal dma_request_slave_channel_reason(), so those drivers don't really need to use the unified compat API. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
