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From e24afc5217e39de550f266f4ee4f7e777749c553 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 16 Aug 2018 15:35:21 -0500
Subject: [PATCH 5179/5725] drm/amdgpu/display: disable eDP fast boot
optimization on DCE8
Seems to cause blank screens.
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=106940
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 3b4a9f9..2fa8d04 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -1562,7 +1562,13 @@ void dce110_enable_accelerated_mode(struct dc *dc, struct dc_state *context)
bool can_eDP_fast_boot_optimize = false;
if (edp_link) {
- can_eDP_fast_boot_optimize =
+ /* this seems to cause blank screens on DCE8 */
+ if ((dc->ctx->dce_version == DCE_VERSION_8_0) ||
+ (dc->ctx->dce_version == DCE_VERSION_8_1) ||
+ (dc->ctx->dce_version == DCE_VERSION_8_3))
+ can_eDP_fast_boot_optimize = false;
+ else
+ can_eDP_fast_boot_optimize =
edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc);
}
--
2.7.4
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