mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 00:21:06 +00:00
fb8a5ffc77
We normally use -ENODEV for a missing device, rather than -ENOENT. The latter is reserved for when we have a device but cannot find something within it. Also avoid looking at the root LED device since it is only a container. Signed-off-by: Simon Glass <sjg@chromium.org>
49 lines
989 B
C
49 lines
989 B
C
/*
|
|
* Copyright (c) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#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_uclass_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_on(struct udevice *dev, int on)
|
|
{
|
|
struct led_ops *ops = led_get_ops(dev);
|
|
|
|
if (!ops->set_on)
|
|
return -ENOSYS;
|
|
|
|
return ops->set_on(dev, on);
|
|
}
|
|
|
|
UCLASS_DRIVER(led) = {
|
|
.id = UCLASS_LED,
|
|
.name = "led",
|
|
.per_device_platdata_auto_alloc_size = sizeof(struct led_uclass_plat),
|
|
};
|