drm/radeon/kms: only expose underscan on avivo chips

R4xx also uses the atom add connector function, but underscan is only
supported on avivo chips.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/radeon_connectors.c

@@ -1134,6 +1134,7 @@ radeon_add_atom_connector(struct drm_device *dev,
 		drm_connector_attach_property(&radeon_connector->base,
 					      rdev->mode_info.coherent_mode_property,
 					      1);
+		if (ASIC_IS_AVIVO(rdev))
 			drm_connector_attach_property(&radeon_connector->base,
 						      rdev->mode_info.underscan_property,
 						      UNDERSCAN_AUTO);
@@ -1162,6 +1163,7 @@ radeon_add_atom_connector(struct drm_device *dev,
 		drm_connector_attach_property(&radeon_connector->base,
 					      rdev->mode_info.coherent_mode_property,
 					      1);
+		if (ASIC_IS_AVIVO(rdev))
 			drm_connector_attach_property(&radeon_connector->base,
 						      rdev->mode_info.underscan_property,
 						      UNDERSCAN_AUTO);
@@ -1196,6 +1198,7 @@ radeon_add_atom_connector(struct drm_device *dev,
 		drm_connector_attach_property(&radeon_connector->base,
 					      rdev->mode_info.coherent_mode_property,
 					      1);
+		if (ASIC_IS_AVIVO(rdev))
 			drm_connector_attach_property(&radeon_connector->base,
 						      rdev->mode_info.underscan_property,
 						      UNDERSCAN_AUTO);

drivers/gpu/drm/radeon/radeon_encoders.c

@@ -1708,6 +1708,7 @@ radeon_add_atom_encoder(struct drm_device *dev, uint32_t encoder_id, uint32_t su
 		} else {
 			drm_encoder_init(dev, encoder, &radeon_atom_enc_funcs, DRM_MODE_ENCODER_TMDS);
 			radeon_encoder->enc_priv = radeon_atombios_set_dig_info(radeon_encoder);
+			if (ASIC_IS_AVIVO(rdev))
 				radeon_encoder->underscan_type = UNDERSCAN_AUTO;
 		}
 		drm_encoder_helper_add(encoder, &radeon_atom_dig_helper_funcs);
@@ -1738,6 +1739,7 @@ radeon_add_atom_encoder(struct drm_device *dev, uint32_t encoder_id, uint32_t su
 		} else {
 			drm_encoder_init(dev, encoder, &radeon_atom_enc_funcs, DRM_MODE_ENCODER_TMDS);
 			radeon_encoder->enc_priv = radeon_atombios_set_dig_info(radeon_encoder);
+			if (ASIC_IS_AVIVO(rdev))
 				radeon_encoder->underscan_type = UNDERSCAN_AUTO;
 		}
 		drm_encoder_helper_add(encoder, &radeon_atom_dig_helper_funcs);