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5917112c SG |
1 | /* |
2 | * Copyright (c) 2015 Google, Inc | |
3 | * Written by Simon Glass <sjg@chromium.org> | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | #include <common.h> | |
9 | #include <dm.h> | |
10 | #include <errno.h> | |
11 | #include <led.h> | |
12 | #include <dm/root.h> | |
13 | #include <dm/uclass-internal.h> | |
14 | ||
15 | int led_get_by_label(const char *label, struct udevice **devp) | |
16 | { | |
17 | struct udevice *dev; | |
18 | struct uclass *uc; | |
19 | int ret; | |
20 | ||
21 | ret = uclass_get(UCLASS_LED, &uc); | |
22 | if (ret) | |
23 | return ret; | |
24 | uclass_foreach_dev(dev, uc) { | |
25 | struct led_uclass_plat *uc_plat = dev_get_uclass_platdata(dev); | |
26 | ||
fb8a5ffc SG |
27 | /* Ignore the top-level LED node */ |
28 | if (uc_plat->label && !strcmp(label, uc_plat->label)) | |
5917112c SG |
29 | return uclass_get_device_tail(dev, 0, devp); |
30 | } | |
31 | ||
fb8a5ffc | 32 | return -ENODEV; |
5917112c SG |
33 | } |
34 | ||
35 | int led_set_on(struct udevice *dev, int on) | |
36 | { | |
37 | struct led_ops *ops = led_get_ops(dev); | |
38 | ||
39 | if (!ops->set_on) | |
40 | return -ENOSYS; | |
41 | ||
42 | return ops->set_on(dev, on); | |
43 | } | |
44 | ||
45 | UCLASS_DRIVER(led) = { | |
46 | .id = UCLASS_LED, | |
47 | .name = "led", | |
48 | .per_device_platdata_auto_alloc_size = sizeof(struct led_uclass_plat), | |
49 | }; |