dmaengine: axi-dmac: populate residue info for completed xfers
Starting with version 4.2.a, the AXI DMAC controller can report partial transfers that have been issued. This change implements computing DMA residue information for transfers, based on that reported information. The way this is done, is to dequeue the partial transfers from the FIFO of partial transfers, store the partial length to the correct segment & descriptor, and compute the residue before submitting the DMA cookie to the DMA framework. Signed-off-by:Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by:
Vinod Koul <vkoul@kernel.org>
parent
09d5b702
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