path: root/include/media/videobuf2-core.h
diff options
authorMarek Szyprowski <m.szyprowski@samsung.com>2012-06-14 10:37:43 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-11-25 17:12:12 -0200
commit3e0c2f2046665bf580273b69ab18d9c76a550e34 (patch)
tree9d47682a1c7ab8ea7afef9d6282361906ed23da5 /include/media/videobuf2-core.h
parente15dab752d4c588544ccabdbe020a7cc092e23c8 (diff)
[media] v4l: vb2: add prepare/finish callbacks to allocators
This patch adds support for prepare/finish callbacks in VB2 allocators. These callback are used for buffer flushing. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media/videobuf2-core.h')
1 files changed, 7 insertions, 0 deletions
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 689ae4ac2572..24b9c90194f2 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -56,6 +56,10 @@ struct vb2_fileio_data;
* dmabuf
* @unmap_dmabuf: releases access control to the dmabuf - allocator is notified
* that this driver is done using the dmabuf for now
+ * @prepare: called every time the buffer is passed from userspace to the
+ * driver, useful for cache synchronisation, optional
+ * @finish: called every time the buffer is passed back from the driver
+ * to the userspace, also optional
* @vaddr: return a kernel virtual address to a given memory buffer
* associated with the passed private structure or NULL if no
* such mapping exists
@@ -82,6 +86,9 @@ struct vb2_mem_ops {
unsigned long size, int write);
void (*put_userptr)(void *buf_priv);
+ void (*prepare)(void *buf_priv);
+ void (*finish)(void *buf_priv);
void *(*attach_dmabuf)(void *alloc_ctx, struct dma_buf *dbuf,
unsigned long size, int write);
void (*detach_dmabuf)(void *buf_priv);

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