projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| 27 | if (!strcmp(label, uc_plat->label)) | |
| 28 | return uclass_get_device_tail(dev, 0, devp); | |
| 29 | } | |
| 30 | ||
| 31 | return -ENOENT; | |
| 32 | } | |
| 33 | ||
| 34 | int led_set_on(struct udevice *dev, int on) | |
| 35 | { | |
| 36 | struct led_ops *ops = led_get_ops(dev); | |
| 37 | ||
| 38 | if (!ops->set_on) | |
| 39 | return -ENOSYS; | |
| 40 | ||
| 41 | return ops->set_on(dev, on); | |
| 42 | } | |
| 43 | ||
| 44 | UCLASS_DRIVER(led) = { | |
| 45 | .id = UCLASS_LED, | |
| 46 | .name = "led", | |
| 47 | .per_device_platdata_auto_alloc_size = sizeof(struct led_uclass_plat), | |
| 48 | }; |