diff options
Diffstat (limited to 'drivers/media/platform/vsp1/vsp1_video.c')
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_video.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c index 4b0ac07af662..b4687a834f85 100644 --- a/drivers/media/platform/vsp1/vsp1_video.c +++ b/drivers/media/platform/vsp1/vsp1_video.c @@ -488,11 +488,17 @@ static bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe) * This function completes the current buffer by filling its sequence number, * time stamp and payload size, and hands it back to the videobuf core. * + * When operating in DU output mode (deep pipeline to the DU through the LIF), + * the VSP1 needs to constantly supply frames to the display. In that case, if + * no other buffer is queued, reuse the one that has just been processed instead + * of handing it back to the videobuf core. + * * Return the next queued buffer or NULL if the queue is empty. */ static struct vsp1_video_buffer * vsp1_video_complete_buffer(struct vsp1_video *video) { + struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity); struct vsp1_video_buffer *next = NULL; struct vsp1_video_buffer *done; unsigned long flags; @@ -507,6 +513,13 @@ vsp1_video_complete_buffer(struct vsp1_video *video) done = list_first_entry(&video->irqqueue, struct vsp1_video_buffer, queue); + + /* In DU output mode reuse the buffer if the list is singular. */ + if (pipe->lif && list_is_singular(&video->irqqueue)) { + spin_unlock_irqrestore(&video->irqlock, flags); + return done; + } + list_del(&done->queue); if (!list_empty(&video->irqqueue)) |