drm/i915/bios: assume eDP is present on port A when there is no VBT

Thomas Preston · rodrigovivi · commit 6e0473633af0 · 2019-03-18T13:59:14.000-07:00
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: a98d9c1 ("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 2131bc0) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
diff --git 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);
 	}
 }
 

Original file line number	Diff line number	Diff line change
`@@ -1673,6 +1673,7 @@ init_vbt_missing_defaults(struct drm_i915_private *dev_priv)`
`1673`	`1673`	`info->supports_dvi = (port != PORT_A && port != PORT_E);`
`1674`	`1674`	`info->supports_hdmi = info->supports_dvi;`
`1675`	`1675`	`info->supports_dp = (port != PORT_E);`
	`1676`	`+ info->supports_edp = (port == PORT_A);`
`1676`	`1677`	`}`
`1677`	`1678`	`}`
`1678`	`1679`