[Intel-gfx] [PATCH] drm/i915: Support HDMI EDID injection

[Abdiel Janulgue]

From: marius vlad <marius.c.vlad at intel.com>

Make a copy of drm_property_blob data for user-supplied EDID blobs.

Signed-off-by: Abdiel Janulgue <abdiel.janulgue at linux.intel.com>
Signed-off-by: Marius Vlad <marius.c.vlad at intel.com>
---
 drivers/gpu/drm/i915/intel_hdmi.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index a580de8..76b8023 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1463,6 +1463,16 @@ intel_hdmi_set_edid(struct drm_connector *connector)
 			    intel_gmbus_get_adapter(dev_priv,
 			    intel_hdmi->ddc_bus));
 
+	/*
+	 * Use the user-supplied EDID blob in case we don't have an
+	 * EDID from the display.
+	 */
+	if (!edid && connector->override_edid) {
+		edid = kmemdup(connector->edid_blob_ptr->data,
+			       connector->edid_blob_ptr->length,
+			       GFP_KERNEL);
+	}
+
 	intel_hdmi_dp_dual_mode_detect(connector, edid != NULL);
 
 	intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);
-- 
2.7.4