mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-21 10:43:06 +00:00
d7a435a2ce
This patch save common LED property "default-state" value in post bind of LED uclass. The configuration for this default state is only performed when led_default_state() is called; It can be called in your board_init() or it could added in init_sequence_r[] in future. Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
100 lines
2 KiB
C
100 lines
2 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/device-internal.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
|
|
|
|
int led_default_state(void)
|
|
{
|
|
struct udevice *dev;
|
|
struct uclass *uc;
|
|
const char *default_state;
|
|
int ret;
|
|
|
|
ret = uclass_get(UCLASS_LED, &uc);
|
|
if (ret)
|
|
return ret;
|
|
for (uclass_find_first_device(UCLASS_LED, &dev);
|
|
dev;
|
|
uclass_find_next_device(&dev)) {
|
|
default_state = dev_read_string(dev, "default-state");
|
|
if (!default_state)
|
|
continue;
|
|
ret = device_probe(dev);
|
|
if (ret)
|
|
return ret;
|
|
if (!strncmp(default_state, "on", 2))
|
|
led_set_state(dev, LEDST_ON);
|
|
else if (!strncmp(default_state, "off", 3))
|
|
led_set_state(dev, LEDST_OFF);
|
|
/* default-state = "keep" : device is only probed */
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
UCLASS_DRIVER(led) = {
|
|
.id = UCLASS_LED,
|
|
.name = "led",
|
|
.per_device_platdata_auto_alloc_size = sizeof(struct led_uc_plat),
|
|
};
|