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| author | Vincent ABRIOU <vincent.abriou@st.com> | 2016-09-12 05:47:27 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-03-03 07:16:11 -0300 |
| commit | 8ecc54138aa1fc1be10bac7890248a0c00065427 (patch) | |
| tree | 64b405917f3523157373e3de0034998c7983107b /Documentation/media | |
| parent | 93d4a26c3dabcee4d8bd6c9a1aba779484dc3cc3 (diff) | |
[media] vivid: support for contiguous DMA buffers
It allows to simulate the behavior of hardware with such limitations or
to connect vivid to real hardware with such limitations.
Add the "allocators" module parameter option to let vivid use the
dma-contig instead of vmalloc.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Vincent Abriou <vincent.abriou@st.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/media')
| -rw-r--r-- | Documentation/media/v4l-drivers/vivid.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/media/v4l-drivers/vivid.rst b/Documentation/media/v4l-drivers/vivid.rst index c8cf371e8bb9..3e44b2217f2d 100644 --- a/Documentation/media/v4l-drivers/vivid.rst +++ b/Documentation/media/v4l-drivers/vivid.rst @@ -263,6 +263,14 @@ all configurable using the following module options: removed. Unless overridden by ccs_cap_mode and/or ccs_out_mode the will default to enabling crop, compose and scaling. +- allocators: + + memory allocator selection, default is 0. It specifies the way buffers + will be allocated. + + - 0: vmalloc + - 1: dma-contig + Taken together, all these module options allow you to precisely customize the driver behavior and test your application with all sorts of permutations. It is also very suitable to emulate hardware that is not yet available, e.g. |