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media: mgb4: Fix resolution change events triggering

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Always generate the resolution change event when the HW reports it and only
discard the streaming termination in case the new resolution is the same as
the old one. The old logic prevented events on
"no signal" -> "valid resolution" transitions as VIDIOC_QUERY_DV_TIMINGS
never updates the timings when there is no signal present.

Signed-off-by: Martin Tůma <martin.tuma@digiteqautomotive.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
This commit is contained in:
Martin Tůma 2025-04-07 17:50:35 +02:00 committed by Hans Verkuil
parent 73fb3b92da
commit e6fd3d81db
1 changed files with 7 additions and 7 deletions
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14
drivers/media/pci/mgb4/mgb4_vin.c
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@ -749,14 +749,14 @@ static void signal_change(struct work_struct *work)
u32 width = resolution >> 16;
u32 height = resolution & 0xFFFF;
static const struct v4l2_event ev = {
.type = V4L2_EVENT_SOURCE_CHANGE,
.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
};
v4l2_event_queue(&vindev->vdev, &ev);
if (timings->width != width || timings->height != height) {
static const struct v4l2_event ev = {
.type = V4L2_EVENT_SOURCE_CHANGE,
.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
};
v4l2_event_queue(&vindev->vdev, &ev);
if (vb2_is_streaming(&vindev->queue))
vb2_queue_error(&vindev->queue);
}