drm/bridge: synopsys: dw-mipi-dsi: Add dw_mipi_dsi_get_bridge() helper

Add dw_mipi_dsi_get_bridge() helper so that it can be used by vendor
drivers which implement vendor specific extensions to Synopsys DW MIPI DSI.
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230821034008.3876938-2-victor.liu@nxp.com

drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c

@@ -1209,6 +1209,12 @@ void dw_mipi_dsi_set_slave(struct dw_mipi_dsi *dsi, struct dw_mipi_dsi *slave)
 }
 EXPORT_SYMBOL_GPL(dw_mipi_dsi_set_slave);
 
+struct drm_bridge *dw_mipi_dsi_get_bridge(struct dw_mipi_dsi *dsi)
+{
+	return &dsi->bridge;
+}
+EXPORT_SYMBOL_GPL(dw_mipi_dsi_get_bridge);
+
 /*
  * Probe/remove API, used from platforms based on the DRM bridge API.
  */

include/drm/bridge/dw_mipi_dsi.h

@@ -11,6 +11,7 @@
 
 #include <linux/types.h>
 
+#include <drm/drm_bridge.h>
 #include <drm/drm_modes.h>
 
 struct drm_display_mode;
@@ -68,5 +69,6 @@ void dw_mipi_dsi_remove(struct dw_mipi_dsi *dsi);
 int dw_mipi_dsi_bind(struct dw_mipi_dsi *dsi, struct drm_encoder *encoder);
 void dw_mipi_dsi_unbind(struct dw_mipi_dsi *dsi);
 void dw_mipi_dsi_set_slave(struct dw_mipi_dsi *dsi, struct dw_mipi_dsi *slave);
+struct drm_bridge *dw_mipi_dsi_get_bridge(struct dw_mipi_dsi *dsi);
 
 #endif /* __DW_MIPI_DSI__ */