Messages in this thread | | | Date | Tue, 12 Nov 2013 09:18:08 +0530 | From | Vinod Koul <> | Subject | Re: [PATCH v2] dma: edma: Add support for Cyclic DMA |
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On Thu, Oct 31, 2013 at 04:31:23PM -0500, Joel Fernandes wrote: > Using the PaRAM configuration function that we split for reuse by the > different DMA types, we implement Cyclic DMA support. > For the cyclic case, we pass different configuration parameters to this > function, and handle all the Cyclic-specific functionality separately. > > Callbacks to the DMA users are handled using vchan_cyclic_callback in > the virt-dma layer. Linking is handled the same way as the slave SG case > except for the last slot where we link it back to the first one in a > cyclic fashion. > > For continuity, we check for cases where no.of periods is great than the > MAX number of slots the driver can allocate for a particular descriptor > and error out on such cases. Applied, thanks
~Vinod
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