ARM: 8508/2: videobuf2-dc: Let drivers specify DMA attrs

DMA allocations might be subject to certain requirements specific to the
hardware using the buffers, such as availability of kernel mapping (for
contents fix-ups in the driver). The only entity that knows them is the
driver, so it must share this knowledge with vb2-dc.

This patch extends the alloc_ctx initialization interface to let the
driver specify DMA attrs, which are then stored inside the allocation
context and will be used for all allocations with that context.

As a side effect, all dma_*_coherent() calls are turned into
dma_*_attrs() calls, because the attributes need to be carried over
through all DMA operations.

Signed-off-by: Tomasz Figa <[email protected]>
Signed-off-by: Douglas Anderson <[email protected]>
Tested-by: Javier Martinez Canillas <[email protected]>
Acked-by: Mauro Carvalho Chehab <[email protected]>
Acked-by: Marek Szyprowski <[email protected]>
Signed-off-by: Russell King <[email protected]>

0 files changed, 0 insertions, 0 deletions