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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) { | |
56e19871 | 25 | struct led_uc_plat *uc_plat = dev_get_uclass_platdata(dev); |
5917112c | 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 | ||
ddae9fcd | 35 | int led_set_state(struct udevice *dev, enum led_state_t state) |
5917112c SG |
36 | { |
37 | struct led_ops *ops = led_get_ops(dev); | |
38 | ||
ddae9fcd | 39 | if (!ops->set_state) |
5917112c SG |
40 | return -ENOSYS; |
41 | ||
ddae9fcd | 42 | return ops->set_state(dev, state); |
5917112c SG |
43 | } |
44 | ||
8f4b6123 SG |
45 | enum led_state_t led_get_state(struct udevice *dev) |
46 | { | |
47 | struct led_ops *ops = led_get_ops(dev); | |
48 | ||
49 | if (!ops->get_state) | |
50 | return -ENOSYS; | |
51 | ||
52 | return ops->get_state(dev); | |
53 | } | |
54 | ||
5917112c SG |
55 | UCLASS_DRIVER(led) = { |
56 | .id = UCLASS_LED, | |
57 | .name = "led", | |
56e19871 | 58 | .per_device_platdata_auto_alloc_size = sizeof(struct led_uc_plat), |
5917112c | 59 | }; |