From ccd1a499c1675fef5d2a138617507add63cb81db Mon Sep 17 00:00:00 2001 From: Javier Martin Date: Thu, 22 Dec 2011 12:12:00 -0300 Subject: [PATCH] [media] media i.MX27 camera: Fix field_count handling To properly detect frame loss the driver must keep track of a frame_count. Furthermore, field_count use was erroneous because in progressive format this must be incremented twice. Signed-off-by: Javier Martin Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/mx2_camera.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/media/video/mx2_camera.c b/drivers/media/video/mx2_camera.c index e635ab3c71e7..04aab0c538aa 100644 --- a/drivers/media/video/mx2_camera.c +++ b/drivers/media/video/mx2_camera.c @@ -258,6 +258,7 @@ struct mx2_camera_dev { dma_addr_t discard_buffer_dma; size_t discard_size; struct mx2_fmt_cfg *emma_prp; + u32 frame_count; }; /* buffer for one video frame */ @@ -371,6 +372,7 @@ static int mx2_camera_add_device(struct soc_camera_device *icd) writel(pcdev->csicr1, pcdev->base_csi + CSICR1); pcdev->icd = icd; + pcdev->frame_count = 0; dev_info(icd->parent, "Camera driver attached to camera %d\n", icd->devnum); @@ -1374,7 +1376,8 @@ static void mx27_camera_frame_done_emma(struct mx2_camera_dev *pcdev, list_del(&vb->queue); vb->state = state; do_gettimeofday(&vb->ts); - vb->field_count++; + vb->field_count = pcdev->frame_count * 2; + pcdev->frame_count++; wake_up(&vb->done); } -- 2.39.5