diff mbox series

drm: rcar-du: Shutdown the display on system shutdown

Message ID 20210323001246.16182-1-laurent.pinchart+renesas@ideasonboard.com (mailing list archive)
State New
Delegated to: Kieran Bingham
Headers show
Series drm: rcar-du: Shutdown the display on system shutdown | expand

Commit Message

Laurent Pinchart March 23, 2021, 12:12 a.m. UTC
When the system shuts down or warm reboots, the display may be active,
with the hardware accessing system memory. Upon reboot, the DDR will not
be accessible, which may cause issues.

Implement the platform_driver .shutdown() operation and shut down the
display to fix this.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
---
 drivers/gpu/drm/rcar-du/rcar_du_drv.c | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index bfbff90588cb..43de3d8686e8 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -561,6 +561,13 @@  static int rcar_du_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static void rcar_du_shutdown(struct platform_device *pdev)
+{
+	struct rcar_du_device *rcdu = platform_get_drvdata(pdev);
+
+	drm_atomic_helper_shutdown(&rcdu->ddev);
+}
+
 static int rcar_du_probe(struct platform_device *pdev)
 {
 	struct rcar_du_device *rcdu;
@@ -617,6 +624,7 @@  static int rcar_du_probe(struct platform_device *pdev)
 static struct platform_driver rcar_du_platform_driver = {
 	.probe		= rcar_du_probe,
 	.remove		= rcar_du_remove,
+	.shutdown	= rcar_du_shutdown,
 	.driver		= {
 		.name	= "rcar-du",
 		.pm	= &rcar_du_pm_ops,