[media] v4l: vsp1: Align crop rectangle to even boundary for YUV formats

Make sure that there are valid values in the crop rectangle to ensure
that the color plane doesn't get shifted when cropping.
Since there is no distinction between 12bit and 16bit YUV formats in
at the subdev level, use the more restrictive 12bit limits for all YUV
formats.

Signed-off-by: Damian Hobson-Garcia <dhobsong@igel.co.jp>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/platform/vsp1/vsp1_rwpf.c b/drivers/media/platform/vsp1/vsp1_rwpf.c
index fa71f46..9688c21 100644 (file)
--- a/drivers/media/platform/vsp1/vsp1_rwpf.c
+++ b/drivers/media/platform/vsp1/vsp1_rwpf.c
@@ -197,6 +197,17 @@ int vsp1_rwpf_set_selection(struct v4l2_subdev *subdev,
         */
        format = vsp1_entity_get_pad_format(&rwpf->entity, cfg, RWPF_PAD_SINK,
                                            sel->which);
+
+       /* Restrict the crop rectangle coordinates to multiples of 2 to avoid
+        * shifting the color plane.
+        */
+       if (format->code == MEDIA_BUS_FMT_AYUV8_1X32) {
+               sel->r.left = ALIGN(sel->r.left, 2);
+               sel->r.top = ALIGN(sel->r.top, 2);
+               sel->r.width = round_down(sel->r.width, 2);
+               sel->r.height = round_down(sel->r.height, 2);
+       }
+
        sel->r.left = min_t(unsigned int, sel->r.left, format->width - 2);
        sel->r.top = min_t(unsigned int, sel->r.top, format->height - 2);
        if (rwpf->entity.type == VSP1_ENTITY_WPF) {