From 6e0473633af059a559ce7b4cbaa51e389c94085e Mon Sep 17 00:00:00 2001
From: Thomas Preston <thomas.preston@codethink.co.uk>
Date: Wed, 6 Mar 2019 20:06:18 +0000
Subject: [PATCH] drm/i915/bios: assume eDP is present on port A when there is no VBT
Git-commit: 6e0473633af059a559ce7b4cbaa51e389c94085e
Patch-mainline: v5.1-rc2
No-fix: 2131bc0ced6088648e47f126566c3da58b07e4ef
References: bsc#1051510
We rely on VBT DDI port info for eDP detection on GEN9 platforms and
above. This breaks GEN9 platforms which don't have VBT because port A
eDP now defaults to false. Fix this by defaulting to true when VBT is
missing.
Fixes: a98d9c1d7e9b ("drm/i915/ddi: Rely on VBT DDI port info for eDP detection")
Signed-off-by: Thomas Preston <thomas.preston@codethink.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190306200618.17405-1-thomas.preston@codethink.co.uk
(cherry picked from commit 2131bc0ced6088648e47f126566c3da58b07e4ef)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/i915/intel_bios.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index b508d8a735e0..4364f42cac6b 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -1673,6 +1673,7 @@ init_vbt_missing_defaults(struct drm_i915_private *dev_priv)
info->supports_dvi = (port != PORT_A && port != PORT_E);
info->supports_hdmi = info->supports_dvi;
info->supports_dp = (port != PORT_E);
+ info->supports_edp = (port == PORT_A);
}
}
--
2.16.4