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"Das U-Boot" Source Tree
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (c) 2016 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
5 */
6
7#define LOG_CATEGORY UCLASS_PANEL_BACKLIGHT
8
9#include <dm.h>
10#include <backlight.h>
11
12int backlight_enable(struct udevice *dev)
13{
14 const struct backlight_ops *ops = backlight_get_ops(dev);
15
16 if (!ops->enable)
17 return -ENOSYS;
18
19 return ops->enable(dev);
20}
21
22int backlight_set_brightness(struct udevice *dev, int percent)
23{
24 const struct backlight_ops *ops = backlight_get_ops(dev);
25
26 if (!ops->set_brightness)
27 return -ENOSYS;
28
29 return ops->set_brightness(dev, percent);
30}
31
32UCLASS_DRIVER(backlight) = {
33 .id = UCLASS_PANEL_BACKLIGHT,
34 .name = "backlight",
35};