drm/rcar-du: Configure RGB output routing to DPAD0
The R8A7790 DU variant has a single RGB output called DPAD0 that can be
fed with the output of DU0, DU1 or DU2. Making the routing configurable.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index 680606e..245800d 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -139,6 +139,11 @@
* configured when starting the CRTC.
*/
rcrtc->outputs |= BIT(output);
+
+ /* Store RGB routing to DPAD0 for R8A7790. */
+ if (rcar_du_has(rcdu, RCAR_DU_FEATURE_DEFR8) &&
+ output == RCAR_DU_OUTPUT_DPAD0)
+ rcdu->dpad0_source = rcrtc->index;
}
void rcar_du_crtc_update_planes(struct drm_crtc *crtc)