v4l: vsp1: uds: Enable scaling of alpha layer

Scaling of the alpha layer is disabled as both the RPF and WPF are
configured to hardcode the alpha value to 255. This results in a 0 alpha
value at the UDS output, making the image invisible when alpha blended
in the BRU. Fix it by enabling scaling of the alpha layer.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
(cherry picked from commit 6051f5f860671577b0759a0d054781b3e599d1cd)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/drivers/media/platform/vsp1/vsp1_uds.c b/drivers/media/platform/vsp1/vsp1_uds.c
index 622342a..1b20f28 100644 (file)
--- a/drivers/media/platform/vsp1/vsp1_uds.c
+++ b/drivers/media/platform/vsp1/vsp1_uds.c
@@ -131,7 +131,7 @@ static int uds_s_stream(struct v4l2_subdev *subdev, int enable)
                return 0;
 
        /* Enable multi-tap scaling. */
-       vsp1_uds_write(uds, VI6_UDS_CTRL, VI6_UDS_CTRL_BC);
+       vsp1_uds_write(uds, VI6_UDS_CTRL, VI6_UDS_CTRL_AON | VI6_UDS_CTRL_BC);
 
        vsp1_uds_write(uds, VI6_UDS_PASS_BWIDTH,
                       (uds_passband_width(uds->hscale)
@@ -139,7 +139,6 @@ static int uds_s_stream(struct v4l2_subdev *subdev, int enable)
                       (uds_passband_width(uds->vscale)
                                << VI6_UDS_PASS_BWIDTH_V_SHIFT));
 
-
        /* Set the scaling ratios and the output size. */
        format = &uds->entity.formats[UDS_PAD_SOURCE];