Blame view
drivers/led/led-uclass.c
1.36 KB
d41ce506b
Initial Release, ...
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 |
/*
* 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_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),
};
|