gpu: drm: adp: Allow max brightness to be set via device tree

The max brightness between different summit panels may be different so allow the max brightness to be set via device tree. Tested-by: Sasha Finkelstein <[email protected]> Signed-off-by: Nick Chan <[email protected]>
AsahiLinux · Oct 3, 2024 · 6055e4c · 6055e4c
1 parent 2064b9b
commit 6055e4c
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/drivers/gpu/drm/adp/panel-summit.c b/drivers/gpu/drm/adp/panel-summit.c
@@ -46,7 +46,11 @@ static int summit_probe(struct mipi_dsi_device *dsi)
 
 	mipi_dsi_set_drvdata(dsi, panel);
 	panel->dsi = dsi;
-	props.max_brightness = 255;
+
+	int ret = device_property_read_u32(dev, "max-brightness", &props.max_brightness);
+
+	if (ret)
+		props.max_brightness = 255;
 	props.type = BACKLIGHT_RAW;
 
 	panel->bl = devm_backlight_device_register(dev, dev_name(dev),