While subdevice and video device are in the same pipeline, pass
subdevice events on to userspace via the video device node.
Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
---
This would allow to see source change events from the source subdevice
on the video device node, for example.
---
drivers/staging/media/imx/imx-media-dev.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/staging/media/imx/imx-media-dev.c b/drivers/staging/media/imx/imx-media-dev.c
index 4b344a4a3706..2fe6fdf2faf1 100644
--- a/drivers/staging/media/imx/imx-media-dev.c
+++ b/drivers/staging/media/imx/imx-media-dev.c
@@ -442,6 +442,23 @@ static const struct media_device_ops imx_media_md_ops = {
.link_notify = imx_media_link_notify,
};
+static void imx_media_notify(struct v4l2_subdev *sd, unsigned int notification,
+ void *arg)
+{
+ struct imx_media_dev *imxmd;
+ struct imx_media_video_dev *vdev;
+
+ imxmd = container_of(sd->v4l2_dev, struct imx_media_dev, v4l2_dev);
+ list_for_each_entry(vdev, &imxmd->vdev_list, list) {
+ if (sd->entity.pipe &&
+ sd->entity.pipe == vdev->vfd->entity.pipe &&
+ notification == V4L2_DEVICE_NOTIFY_EVENT) {
+ v4l2_event_queue(vdev->vfd, arg);
+ break;
+ }
+ }
+}
+
static int imx_media_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -464,6 +481,7 @@ static int imx_media_probe(struct platform_device *pdev)
imxmd->v4l2_dev.mdev = &imxmd->md;
strscpy(imxmd->v4l2_dev.name, "imx-media",
sizeof(imxmd->v4l2_dev.name));
+ imxmd->v4l2_dev.notify = imx_media_notify;
media_device_init(&imxmd->md);
--
2.19.1
