drm/panel: simple - Disable panel on shutdown

When a device is shut down, disable the panel to make sure the display
backlight doesn't stay lit.

Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index a0d3cf11ca15..abae40c58086 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -262,6 +262,13 @@ static int panel_simple_remove(struct device *dev)
         return 0;
 }
 
+static void panel_simple_shutdown(struct device *dev)
+{
+        struct panel_simple *panel = dev_get_drvdata(dev);
+
+        panel_simple_disable(&panel->base);
+}
+
 static const struct drm_display_mode auo_b101aw03_mode = {
         .clock = 51450,
         .hdisplay = 1024,
@@ -467,6 +474,11 @@ static int panel_simple_platform_remove(struct platform_device *pdev)
         return panel_simple_remove(&pdev->dev);
 }
 
+static void panel_simple_platform_shutdown(struct platform_device *pdev)
+{
+        panel_simple_shutdown(&pdev->dev);
+}
+
 static struct platform_driver panel_simple_platform_driver = {
         .driver = {
                 .name = "panel-simple",
@@ -475,6 +487,7 @@ static struct platform_driver panel_simple_platform_driver = {
         },
         .probe = panel_simple_platform_probe,
         .remove = panel_simple_platform_remove,
+        .shutdown = panel_simple_platform_shutdown,
 };
 
 struct panel_desc_dsi {
@@ -616,6 +629,11 @@ static int panel_simple_dsi_remove(struct mipi_dsi_device *dsi)
         return panel_simple_remove(&dsi->dev);
 }
 
+static void panel_simple_dsi_shutdown(struct mipi_dsi_device *dsi)
+{
+        panel_simple_shutdown(&dsi->dev);
+}
+
 static struct mipi_dsi_driver panel_simple_dsi_driver = {
         .driver = {
                 .name = "panel-simple-dsi",
@@ -624,6 +642,7 @@ static struct mipi_dsi_driver panel_simple_dsi_driver = {
         },
         .probe = panel_simple_dsi_probe,
         .remove = panel_simple_dsi_remove,
+        .shutdown = panel_simple_dsi_shutdown,
 };
 
 static int __init panel_simple_init(void)