Commit 7a15cbd4 authored by Dave Airlie's avatar Dave Airlie
Browse files

drm/radeon/kms: fix displayport->dvi connector DDC.

It appears that attempting AUXCH DDC breaks the subsequent attempt
to do DDC over the i2c lines, so use the sink type to determine
if we should be doing AUXCH or i2c DDC.

This fixes my DVI monitor plugged into DP->DVI convertor.

Signed-off-by: default avatarDave Airlie <>
parent 9270eb1b
......@@ -357,7 +357,8 @@ int radeon_ddc_get_modes(struct radeon_connector *radeon_connector)
if ((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) ||
(radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) {
struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
if (dig->dp_i2c_bus)
if ((dig->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT ||
dig->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) && dig->dp_i2c_bus)
radeon_connector->edid = drm_get_edid(&radeon_connector->base, &dig->dp_i2c_bus->adapter);
if (!radeon_connector->ddc_bus)
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