From 44e2a3d111c54937aae8f52d92b827519e2fab02 Mon Sep 17 00:00:00 2001
From: Sung Lee <sung.lee@amd.com>
Date: Wed, 22 Apr 2020 18:07:55 -0400
Subject: drm/amd/display: Change viewport limit to 12 for DCN2
Git-commit: 3a4837fb3c96aa6a0f017781a062687be4d6250b
Patch-mainline: v5.8-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
[WHY & HOW]
Viewport limit was set to 16 pixels due to an issue with MPO
on small viewports. This restriction does not apply and the
viewport limit can now be lowered.
Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 12f5c6881cd0..1a01c038632b 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -1064,8 +1064,8 @@ bool resource_build_scaling_params(struct pipe_ctx *pipe_ctx)
calculate_viewport(pipe_ctx);
- if (pipe_ctx->plane_res.scl_data.viewport.height < 16 ||
- pipe_ctx->plane_res.scl_data.viewport.width < 16) {
+ if (pipe_ctx->plane_res.scl_data.viewport.height < 12 ||
+ pipe_ctx->plane_res.scl_data.viewport.width < 12) {
if (store_h_border_left) {
restore_border_left_from_dst(pipe_ctx,
store_h_border_left);
--
2.28.0