drm/i915/display: Handle odd position for planar formats in selective fetch

Since Lunarlake there is no restriction planar planes has to be even
positions. Due to this we may end up having odd offset for UV-plane in
selective fetch configuration. Add handling for this case into selective
fetch configuration.

Bspec: 68927
Suggested-by: Vidya Srinivas <vidya.srinivas@intel.com>
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Vidya Srinivas <vidya.srinivas@intel.com>
Link: https://patch.msgid.link/20260512080022.2527094-1-jouni.hogander@intel.com

diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index ef431dd32e74a9f672b617cd722e8132ca46bec4..ad4bfff6903dabe726da105f04956495a7ab3f0e 100644 (file)
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -1532,7 +1532,7 @@ static void icl_plane_update_sel_fetch_noarm(struct intel_dsb *dsb,
        if (!color_plane)
                y = plane_state->view.color_plane[color_plane].y + clip->y1;
        else
-               y = plane_state->view.color_plane[color_plane].y + clip->y1 / 2;
+               y = plane_state->view.color_plane[color_plane].y + DIV_ROUND_UP(clip->y1, 2);
 
        val = y << 16 | x;