disp: msm: sde: populate connector modes during init

When continuous splash is enabled, KMS populates the modes of
a connector during splash config. With TUI VM enabled, this path
will also be exercised by trusted vm for splash handoff, where for
a given display we try to use the same HW blocks configured by
the primary VM.

Since the trusted VM invokes the path under connection_mutex lock,
calling fill_modes will lead to a deadlock. So, move the connector
mode population during init for DSI displays, since the modes are
available for the connector during initialization.

Change-Id: I12f920f4af84b7bccc97a5f5edb5117ada49b960
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>

msm/sde/sde_connector.c

@@ -2707,6 +2707,12 @@ static int _sde_connector_install_properties(struct drm_device *dev,
 				sizeof(dsi_display->panel->hdr_props),
 				CONNECTOR_PROP_HDR_INFO);
 		}
+
+		mutex_lock(&c_conn->base.dev->mode_config.mutex);
+		sde_connector_fill_modes(&c_conn->base,
+						dev->mode_config.max_width,
+						dev->mode_config.max_height);
+		mutex_unlock(&c_conn->base.dev->mode_config.mutex);
 	}
 
 	msm_property_install_volatile_range(