183d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+ 2363bf77aSSimon Glass /* 3363bf77aSSimon Glass * Copyright (c) 2016 Google, Inc 4363bf77aSSimon Glass * Written by Simon Glass <sjg@chromium.org> 5363bf77aSSimon Glass */ 6363bf77aSSimon Glass 7363bf77aSSimon Glass #include <common.h> 8363bf77aSSimon Glass #include <dm.h> 9363bf77aSSimon Glass #include <backlight.h> 10363bf77aSSimon Glass backlight_enable(struct udevice * dev)11363bf77aSSimon Glassint backlight_enable(struct udevice *dev) 12363bf77aSSimon Glass { 13363bf77aSSimon Glass const struct backlight_ops *ops = backlight_get_ops(dev); 14363bf77aSSimon Glass 15363bf77aSSimon Glass if (!ops->enable) 16363bf77aSSimon Glass return -ENOSYS; 17363bf77aSSimon Glass 18363bf77aSSimon Glass return ops->enable(dev); 19363bf77aSSimon Glass } 20363bf77aSSimon Glass backlight_set_brightness(struct udevice * dev,int percent)21*a4f737a9SSimon Glassint backlight_set_brightness(struct udevice *dev, int percent) 22*a4f737a9SSimon Glass { 23*a4f737a9SSimon Glass const struct backlight_ops *ops = backlight_get_ops(dev); 24*a4f737a9SSimon Glass 25*a4f737a9SSimon Glass if (!ops->set_brightness) 26*a4f737a9SSimon Glass return -ENOSYS; 27*a4f737a9SSimon Glass 28*a4f737a9SSimon Glass return ops->set_brightness(dev, percent); 29*a4f737a9SSimon Glass } 30*a4f737a9SSimon Glass 31363bf77aSSimon Glass UCLASS_DRIVER(backlight) = { 32363bf77aSSimon Glass .id = UCLASS_PANEL_BACKLIGHT, 33363bf77aSSimon Glass .name = "backlight", 34363bf77aSSimon Glass }; 35