On 01/02/2015 12:09 PM, Mayuresh Chitale wrote:
Yes. That is correct.
Ok, but please explain in detail what exactly your use case is for this for
slave-device DMA. For a device you usually have either a dedicated DMA port
to which the DMA controller is directly connected or a memory mapped FIFO.
So there really is only one source or destination when reading from a device
or writing to a device.
Thanks,
Mayuresh.
On Fri, Jan 2, 2015 at 4:39 PM, Lars-Peter Clausen <lars@xxxxxxxxxx> wrote:
On 01/02/2015 12:03 PM, Mayuresh Chitale wrote:
Hi,
I am working on a slave dma driver that supports scatter-gather
operation. However looking at APIs in dmaengine.h I see that the
device_prep_slave_sg supports only many to one transfer. Is there any
API that can be used to support many to many transfers for slave dma?
What do you mean by many to many? Many sources to many destinations?
- Lars
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