Devices with Metadata output (like uvc), create two video devices, one
for the data itself and another one for the metadata.
Add a "Meta: " to the beginning of the device name, as suggested by Mauro,
to avoid having multiple devices with the same name.
Fixes v4l2-compliance:
Media Controller ioctls:
fail: v4l2-test-media.cpp(205): v2_entity_names_set.find(key) != v2_entity_names_set.end()
test MEDIA_IOC_G_TOPOLOGY: FAIL
fail: v4l2-test-media.cpp(394): num_data_links != num_links
test MEDIA_IOC_ENUM_ENTITIES/LINKS: FAIL
Suggested-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-dev.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
index d03ace324db0..98be80010702 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -901,6 +901,15 @@ int __video_register_device(struct video_device *vdev,
if (WARN_ON(type != VFL_TYPE_SUBDEV && !vdev->device_caps))
return -EINVAL;
+ /* Add Meta: to metadata device names */
+ if (vdev->device_caps &
+ (V4L2_CAP_META_CAPTURE | V4L2_CAP_META_OUTPUT)) {
+ char aux[sizeof(vdev->name)];
+
+ snprintf(aux, sizeof(aux), "Meta: %s", vdev->name);
+ strscpy(vdev->name, aux, sizeof(aux));
+ }
+
/* v4l2_fh support */
spin_lock_init(&vdev->fh_lock);
INIT_LIST_HEAD(&vdev->fh_list);
--
2.34.1.703.g22d0c6ccf7-goog
