On 31 May 2013 02:01, Tony Lindgren <t...@atomide.com> wrote: > * Linus Walleij <linus.wall...@linaro.org> [130530 13:27]: >> On Thu, May 30, 2013 at 10:18 PM, Tony Lindgren <t...@atomide.com> wrote: >> >> > TUSB would work with dmaengine, but AFAIK we're still missing the >> > dmaengine configuration options to support increasing device end >> > FIFO address. >> >> Can you elaborate on this? What is the usecase here? > > There are many devices where the device FIFO is memory mapped to the > GPMC bus on omaps, like TUSB, OneNAND, smc911x etc. I believe the > only reason why these have not been converted to the dmaengine is > the fact that dmaengine cannot configure the DMA hardware to do > autoincrement and loop over the device FIFO. > Doesn't device_prep_interleaved_dma() help?
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