drm/radeon/kms: add support for load detection on dp bridges
dp to vga bridges for example.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index c04e18e..dc7852b 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -1235,6 +1235,16 @@
ret = connector_status_connected;
}
}
+
+ if ((ret == connector_status_disconnected) &&
+ radeon_connector->dac_load_detect) {
+ struct drm_encoder *encoder = radeon_best_single_encoder(connector);
+ struct drm_encoder_helper_funcs *encoder_funcs;
+ if (encoder) {
+ encoder_funcs = encoder->helper_private;
+ ret = encoder_funcs->detect(encoder, connector);
+ }
+ }
}
radeon_connector_update_scratch_regs(connector, ret);
@@ -1408,6 +1418,10 @@
default:
connector->interlace_allowed = true;
connector->doublescan_allowed = true;
+ radeon_connector->dac_load_detect = true;
+ drm_connector_attach_property(&radeon_connector->base,
+ rdev->mode_info.load_detect_property,
+ 1);
break;
case DRM_MODE_CONNECTOR_DVII:
case DRM_MODE_CONNECTOR_DVID:
@@ -1429,6 +1443,12 @@
connector->doublescan_allowed = true;
else
connector->doublescan_allowed = false;
+ if (connector_type == DRM_MODE_CONNECTOR_DVII) {
+ radeon_connector->dac_load_detect = true;
+ drm_connector_attach_property(&radeon_connector->base,
+ rdev->mode_info.load_detect_property,
+ 1);
+ }
break;
case DRM_MODE_CONNECTOR_LVDS:
case DRM_MODE_CONNECTOR_eDP: