mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-08-12 02:06:59 +02:00
d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
|
|
* Author: Patrick Delaunay <patrick.delaunay@foss.st.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <backlight.h>
|
|
#include <log.h>
|
|
#include <asm/gpio.h>
|
|
|
|
struct gpio_backlight_priv {
|
|
struct gpio_desc gpio;
|
|
bool def_value;
|
|
};
|
|
|
|
static int gpio_backlight_enable(struct udevice *dev)
|
|
{
|
|
struct gpio_backlight_priv *priv = dev_get_priv(dev);
|
|
|
|
dm_gpio_set_value(&priv->gpio, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gpio_backlight_of_to_plat(struct udevice *dev)
|
|
{
|
|
struct gpio_backlight_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
ret = gpio_request_by_name(dev, "gpios", 0, &priv->gpio,
|
|
GPIOD_IS_OUT);
|
|
if (ret) {
|
|
debug("%s: Warning: cannot get GPIO: ret=%d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
priv->def_value = dev_read_bool(dev, "default-on");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gpio_backlight_probe(struct udevice *dev)
|
|
{
|
|
struct gpio_backlight_priv *priv = dev_get_priv(dev);
|
|
|
|
if (priv->def_value)
|
|
gpio_backlight_enable(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct backlight_ops gpio_backlight_ops = {
|
|
.enable = gpio_backlight_enable,
|
|
};
|
|
|
|
static const struct udevice_id gpio_backlight_ids[] = {
|
|
{ .compatible = "gpio-backlight" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(gpio_backlight) = {
|
|
.name = "gpio_backlight",
|
|
.id = UCLASS_PANEL_BACKLIGHT,
|
|
.of_match = gpio_backlight_ids,
|
|
.ops = &gpio_backlight_ops,
|
|
.of_to_plat = gpio_backlight_of_to_plat,
|
|
.probe = gpio_backlight_probe,
|
|
.priv_auto = sizeof(struct gpio_backlight_priv),
|
|
};
|