u-boot/drivers/led/led-uclass.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
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>
2018-05-07 09:34:12 -04:00

70 lines
1.4 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <led.h>
#include <dm/root.h>
#include <dm/uclass-internal.h>
int led_get_by_label(const char *label, struct udevice **devp)
{
struct udevice *dev;
struct uclass *uc;
int ret;
ret = uclass_get(UCLASS_LED, &uc);
if (ret)
return ret;
uclass_foreach_dev(dev, uc) {
struct led_uc_plat *uc_plat = dev_get_uclass_platdata(dev);
/* Ignore the top-level LED node */
if (uc_plat->label && !strcmp(label, uc_plat->label))
return uclass_get_device_tail(dev, 0, devp);
}
return -ENODEV;
}
int led_set_state(struct udevice *dev, enum led_state_t state)
{
struct led_ops *ops = led_get_ops(dev);
if (!ops->set_state)
return -ENOSYS;
return ops->set_state(dev, state);
}
enum led_state_t led_get_state(struct udevice *dev)
{
struct led_ops *ops = led_get_ops(dev);
if (!ops->get_state)
return -ENOSYS;
return ops->get_state(dev);
}
#ifdef CONFIG_LED_BLINK
int led_set_period(struct udevice *dev, int period_ms)
{
struct led_ops *ops = led_get_ops(dev);
if (!ops->set_period)
return -ENOSYS;
return ops->set_period(dev, period_ms);
}
#endif
UCLASS_DRIVER(led) = {
.id = UCLASS_LED,
.name = "led",
.per_device_platdata_auto_alloc_size = sizeof(struct led_uc_plat),
};