From: Jake Wang <haonan.wang2@xxxxxxx>
[Why]
During DCC on/off, stutter period is calculated before DCC has fully transitioned.
This results in incorrect stutter period calculation.
[How]
Trigger a full update when DCC changes between on/off.
Signed-off-by: Jake Wang <haonan.wang2@xxxxxxx>
Reviewed-by: Aric Cyr <Aric.Cyr@xxxxxxx>
Acked-by: Stylon Wang <stylon.wang@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 34c207f92df9..156ba8d3d4dc 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1918,8 +1918,13 @@ static enum surface_update_type get_plane_info_update_type(const struct dc_surfa
if (u->plane_info->dcc.enable != u->surface->dcc.enable
|| u->plane_info->dcc.independent_64b_blks != u->surface->dcc.independent_64b_blks
|| u->plane_info->dcc.meta_pitch != u->surface->dcc.meta_pitch) {
+ /* During DCC on/off, stutter period is calculated before
+ * DCC has fully transitioned. This results in incorrect
+ * stutter period calculation. Triggering a full update will
+ * recalculate stutter period.
+ */
update_flags->bits.dcc_change = 1;
- elevate_update_type(&update_type, UPDATE_TYPE_MED);
+ elevate_update_type(&update_type, UPDATE_TYPE_FULL);
}
if (resource_pixel_format_to_bpp(u->plane_info->format) !=
--
2.25.1
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