/* * Copyright (c) 2015 Google, Inc * Written by Simon Glass <sjg@chromium.org> * * SPDX-License-Identifier: GPL-2.0+ */ #ifndef __LED_H #define __LED_H /** * struct led_uclass_plat - Platform data the uclass stores about each device * * @label: LED label */ struct led_uclass_plat { const char *label; }; struct led_ops { /** * set_on() - set the state of an LED * * @dev: LED device to change * @on: 1 to turn the LED on, 0 to turn it off * @return 0 if OK, -ve on error */ int (*set_on)(struct udevice *dev, int on); }; #define led_get_ops(dev) ((struct led_ops *)(dev)->driver->ops) /** * led_get_by_label() - Find an LED device by label * * @label: LED label to look up * @devp: Returns the associated device, if found * @return 0 if found, -ENODEV if not found, other -ve on error */ int led_get_by_label(const char *label, struct udevice **devp); /** * led_set_on() - set the state of an LED * * @dev: LED device to change * @on: 1 to turn the LED on, 0 to turn it off * @return 0 if OK, -ve on error */ int led_set_on(struct udevice *dev, int on); #endif