__imx7_csi_video_try_fmt
__imx7_csi_video_try_fmt(&f->fmt.pix, NULL);
cc = __imx7_csi_video_try_fmt(&f->fmt.pix, &csi->vdev_compose);
csi->vdev_cc = __imx7_csi_video_try_fmt(pixfmt, &csi->vdev_compose);