mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
|
|
* Author: Patrick Delaunay <patrick.delaunay@st.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <backlight.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_ofdata_to_platdata(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,
|
|
.ofdata_to_platdata = gpio_backlight_ofdata_to_platdata,
|
|
.probe = gpio_backlight_probe,
|
|
.priv_auto_alloc_size = sizeof(struct gpio_backlight_priv),
|
|
};
|