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| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2020-05-14 18:01:44 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-06-23 13:31:12 +0200 |
| commit | 7b4b45555c79db03dad8192e6ef85cb30236827b (patch) | |
| tree | bdc5431173c02ba1f8e8aba76313d84c76655e8a /include/media | |
| parent | media: videobuf2: add V4L2_FLAG_MEMORY_NON_CONSISTENT flag (diff) | |
| download | linux-7b4b45555c79db03dad8192e6ef85cb30236827b.tar.xz linux-7b4b45555c79db03dad8192e6ef85cb30236827b.zip | |
media: videobuf2: add queue memory consistency parameter
Preparations for future V4L2_FLAG_MEMORY_NON_CONSISTENT support.
Extend vb2_core_reqbufs() parameters list to accept requests'
->flags, which will be used for memory consistency configuration.
An attempt to allocate a buffer with consistency requirements
which don't match queue's consistency model will fail.
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/videobuf2-core.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index ccc5c498d3e3..9e68fe043a6c 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -740,6 +740,8 @@ void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb); * vb2_core_reqbufs() - Initiate streaming. * @q: pointer to &struct vb2_queue with videobuf2 queue. * @memory: memory type, as defined by &enum vb2_memory. + * @flags: auxiliary queue/buffer management flags. Currently, the only + * used flag is %V4L2_FLAG_MEMORY_NON_CONSISTENT. * @count: requested buffer count. * * Videobuf2 core helper to implement VIDIOC_REQBUF() operation. It is called @@ -764,12 +766,13 @@ void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb); * Return: returns zero on success; an error code otherwise. */ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, - unsigned int *count); + unsigned int flags, unsigned int *count); /** * vb2_core_create_bufs() - Allocate buffers and any required auxiliary structs * @q: pointer to &struct vb2_queue with videobuf2 queue. * @memory: memory type, as defined by &enum vb2_memory. + * @flags: auxiliary queue/buffer management flags. * @count: requested buffer count. * @requested_planes: number of planes requested. * @requested_sizes: array with the size of the planes. @@ -787,7 +790,8 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory, * Return: returns zero on success; an error code otherwise. */ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory, - unsigned int *count, unsigned int requested_planes, + unsigned int flags, unsigned int *count, + unsigned int requested_planes, const unsigned int requested_sizes[]); /** |