Hi, On 04/13/2017 07:18 AM, Minghsiu Tsai wrote: > From: Daniel Kurtz <djkurtz@xxxxxxxxxxxx> > > Experiments show that the: > (1) mtk-mdp uses the _MPLANE form of CAPTURE/OUTPUT > (2) CAPTURE types use CROP targets, and OUTPUT types use COMPOSE targets > > Signed-off-by: Daniel Kurtz <djkurtz@xxxxxxxxxxxx> > Signed-off-by: Minghsiu Tsai <minghsiu.tsai@xxxxxxxxxxxx> > > --- > drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c | 18 +++++++++--------- > 1 file changed, 9 insertions(+), 9 deletions(-) > > diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c > index 13afe48..8ab7ca0 100644 > --- a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c > +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c > @@ -837,12 +837,12 @@ static int mtk_mdp_m2m_g_selection(struct file *file, void *fh, > struct mtk_mdp_ctx *ctx = fh_to_ctx(fh); > bool valid = false; > > - if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { > - if (mtk_mdp_is_target_compose(s->target)) > - valid = true; > - } else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { > + if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { > if (mtk_mdp_is_target_crop(s->target)) > valid = true; > + } else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { > + if (mtk_mdp_is_target_compose(s->target)) > + valid = true; > } Using MPLANE formats in g/s_selection violates the v4l2 spec. See [1]. <snip> -- regards, Stan [1] https://linuxtv.org/downloads/v4l-dvb-apis/uapi/v4l/vidioc-g-selection.html