[media] v4l: videobuf2: add DMA coherent allocator

Add an implementation of DMA coherent memory allocator and handling
routines for videobuf2, implemented on top of dma_alloc_coherent() call.

Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
CC: Pawel Osciak <pawel@osciak.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index b8c21a729b86..b64183e06348 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -50,6 +50,11 @@ config VIDEOBUF2_CORE
 config VIDEOBUF2_MEMOPS
         tristate
 
+config VIDEOBUF2_DMA_CONTIG
+        select VIDEOBUF2_CORE
+        select VIDEOBUF2_MEMOPS
+        tristate
+
 config VIDEOBUF2_VMALLOC
         select VIDEOBUF2_CORE
         select VIDEOBUF2_MEMOPS