15917112cSSimon Glass /* 25917112cSSimon Glass * Copyright (c) 2015 Google, Inc 35917112cSSimon Glass * Written by Simon Glass <sjg@chromium.org> 45917112cSSimon Glass * 55917112cSSimon Glass * SPDX-License-Identifier: GPL-2.0+ 65917112cSSimon Glass */ 75917112cSSimon Glass 85917112cSSimon Glass #include <common.h> 95917112cSSimon Glass #include <dm.h> 105917112cSSimon Glass #include <errno.h> 115917112cSSimon Glass #include <led.h> 125917112cSSimon Glass #include <dm/root.h> 135917112cSSimon Glass #include <dm/uclass-internal.h> 145917112cSSimon Glass 155917112cSSimon Glass int led_get_by_label(const char *label, struct udevice **devp) 165917112cSSimon Glass { 175917112cSSimon Glass struct udevice *dev; 185917112cSSimon Glass struct uclass *uc; 195917112cSSimon Glass int ret; 205917112cSSimon Glass 215917112cSSimon Glass ret = uclass_get(UCLASS_LED, &uc); 225917112cSSimon Glass if (ret) 235917112cSSimon Glass return ret; 245917112cSSimon Glass uclass_foreach_dev(dev, uc) { 255917112cSSimon Glass struct led_uclass_plat *uc_plat = dev_get_uclass_platdata(dev); 265917112cSSimon Glass 27*fb8a5ffcSSimon Glass /* Ignore the top-level LED node */ 28*fb8a5ffcSSimon Glass if (uc_plat->label && !strcmp(label, uc_plat->label)) 295917112cSSimon Glass return uclass_get_device_tail(dev, 0, devp); 305917112cSSimon Glass } 315917112cSSimon Glass 32*fb8a5ffcSSimon Glass return -ENODEV; 335917112cSSimon Glass } 345917112cSSimon Glass 355917112cSSimon Glass int led_set_on(struct udevice *dev, int on) 365917112cSSimon Glass { 375917112cSSimon Glass struct led_ops *ops = led_get_ops(dev); 385917112cSSimon Glass 395917112cSSimon Glass if (!ops->set_on) 405917112cSSimon Glass return -ENOSYS; 415917112cSSimon Glass 425917112cSSimon Glass return ops->set_on(dev, on); 435917112cSSimon Glass } 445917112cSSimon Glass 455917112cSSimon Glass UCLASS_DRIVER(led) = { 465917112cSSimon Glass .id = UCLASS_LED, 475917112cSSimon Glass .name = "led", 485917112cSSimon Glass .per_device_platdata_auto_alloc_size = sizeof(struct led_uclass_plat), 495917112cSSimon Glass }; 50