From 499b11527b5dc07df496e3533ae217b8992b2275 Mon Sep 17 00:00:00 2001 From: Harry Wentland Date: Thu, 2 Aug 2018 15:32:01 -0400 Subject: [PATCH 5039/5725] drm/amd/display: Only require EDID read for HDMI and DVI MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [Why] VGA sometimes has trouble retrieving the EDID on very long cables, KVM switches, or old displays. [How] Only require EDID read for HDMI and DVI and exempt other types (DP, VGA). We currently don't support VGA but if anyone adds support in the future this might get overlooked. Signed-off-by: Harry Wentland Suggested-by: Michel Dänzer Acked-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc_link.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index cbfb1ae..048b8c8 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -753,7 +753,8 @@ bool dc_link_detect(struct dc_link *link, enum dc_detect_reason reason) * even if we have no EDID in order to go to * fail-safe mode */ - if (!dc_is_dp_signal(link->connector_signal)) + if (dc_is_hdmi_signal(link->connector_signal) || + dc_is_dvi_signal(link->connector_signal)) return false; default: break; -- 2.7.4