[PATCH 18/31] staging: bcm2835-camera: Set sequence number correctly

Stefan Wahren wahrenst at gmx.net
Thu Jun 27 18:56:15 UTC 2019


From: Dave Stevenson <dave.stevenson at raspberrypi.org>

Set the sequence number in vb2_v4l2_buffer mainly so the
latest v4l2-ctl reports the frame rate correctly.

Signed-off-by: Dave Stevenson <dave.stevenson at raspberrypi.org>
---
 drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c | 4 ++++
 drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
index f2e951c..9967df9 100644
--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
@@ -398,6 +398,7 @@ static void buffer_cb(struct vchiq_mmal_instance *instance,
 		}
 	}
 	dev->capture.last_timestamp = buf->vb.vb2_buf.timestamp;
+	buf->vb.sequence = dev->capture.sequence++;

 	vb2_set_plane_payload(&buf->vb.vb2_buf, 0, length);
 	if (mmal_flags & MMAL_BUFFER_HEADER_FLAG_KEYFRAME)
@@ -525,6 +526,9 @@ static int start_streaming(struct vb2_queue *vq, unsigned int count)
 	/* enable frame capture */
 	dev->capture.frame_count = 1;

+	/* reset sequence number */
+	dev->capture.sequence = 0;
+
 	/* if the preview is not already running, wait for a few frames for AGC
 	 * to settle down.
 	 */
diff --git a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h
index bbfe8fe..c821513 100644
--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h
+++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h
@@ -93,6 +93,8 @@ struct bm2835_mmal_dev {
 		ktime_t kernel_start_ts;
 		/* Timestamp of last frame */
 		u64		last_timestamp;
+		/* Sequence number of last buffer */
+		u32		sequence;

 		struct vchiq_mmal_port  *port; /* port being used for capture */
 		/* camera port being used for capture */
--
2.7.4



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