u-boot/drivers/video/backlight-uclass.c
Simon Glass 363bf77acc dm: backlight: Add a backlight uclass
LCD panels normally have a backlight which can be controlled to illuminate
the LCD contents. Add a uclass to support this. Initially it only has a
method to enable the backlight.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-21 20:42:36 -07:00

26 lines
445 B
C

/*
* Copyright (c) 2016 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <backlight.h>
int backlight_enable(struct udevice *dev)
{
const struct backlight_ops *ops = backlight_get_ops(dev);
if (!ops->enable)
return -ENOSYS;
return ops->enable(dev);
}
UCLASS_DRIVER(backlight) = {
.id = UCLASS_PANEL_BACKLIGHT,
.name = "backlight",
};