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media: staging: media: rkisp1: make links immutable by default

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The only places which make sese to allow users to enable or disable
links are:

* between sensors and isp:
So users can select which sensor should be used while streaming

* between isp and the resizers:
              |
              v here
rkisp1_isp:2 -> rkisp1_resizer_mainpath -> rkisp1_mainpath (capture)
            \-> rkisp1_resizer_selfpath -> rkisp1_selfpath (capture)
              ^ here
              |

So users can disable one of the capture paths when unused, to avoid
worring about matching formats.

Make the following links immutable to simplify userspace:

rkisp1_resizer_mainpath -> rkisp1_mainpath
rkisp1_resizer_selfpath -> rkisp1_selfpath
rkisp1_params           -> rkisp1_isp
rkisp1_isp              -> rkisp1_stats

Signed-off-by: Helen Koike <helen.koike@collabora.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Helen Koike
2020-01-17 21:12:18 +01:00
committed by Mauro Carvalho Chehab
parent 5dbef6b3e0
commit 3eed7385bf
1 changed files with 3 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/staging/media/rkisp1/rkisp1-dev.c
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@@ -145,14 +145,15 @@ static int rkisp1_create_links(struct rkisp1_device *rkisp1)
flags = 0;
}
flags = MEDIA_LNK_FL_ENABLED;
flags = MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE;
/* create ISP->RSZ->CAP links */
for (i = 0; i < 2; i++) {
source = &rkisp1->isp.sd.entity;
sink = &rkisp1->resizer_devs[i].sd.entity;
ret = media_create_pad_link(source, RKISP1_ISP_PAD_SOURCE_VIDEO,
sink, RKISP1_RSZ_PAD_SINK, flags);
sink, RKISP1_RSZ_PAD_SINK,
MEDIA_LNK_FL_ENABLED);
if (ret)
return ret;