tree 5679bf75e3c4fc1a8bba626da01c2d0ce42f556f
parent 38c38cb73223218f6eedf485280917af1f8a0af2
author Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> 1566995740 +0900
committer Christoph Hellwig <hch@lst.de> 1567492381 +0200

dma-mapping: introduce dma_get_merge_boundary()

This patch adds a new DMA API "dma_get_merge_boundary". This function
returns the DMA merge boundary if the DMA layer can merge the segments.
This patch also adds the implementation for a new dma_map_ops pointer.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Christoph Hellwig <hch@lst.de>