From e24afc5217e39de550f266f4ee4f7e777749c553 Mon Sep 17 00:00:00 2001 From: Alex Deucher 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 Signed-off-by: Alex Deucher --- 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