projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 5917112c SG |
1 | /* |
| 2 | * Copyright (c) 2015 Google, Inc | |
| 3 | * Written by Simon Glass <[email protected]> | |
| 4 | * | |
| 5 | * SPDX-License-Identifier: GPL-2.0+ | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef __LED_H | |
| 9 | #define __LED_H | |
| 10 | ||
| 11 | /** | |
| 12 | * struct led_uclass_plat - Platform data the uclass stores about each device | |
| 13 | * | |
| 14 | * @label: LED label | |
| 15 | */ | |
| 16 | struct led_uclass_plat { | |
| 17 | const char *label; | |
| 18 | }; | |
| 19 | ||
| 20 | struct led_ops { | |
| 21 | /** | |
| 22 | * set_on() - set the state of an LED | |
| 23 | * | |
| 24 | * @dev: LED device to change | |
| 25 | * @on: 1 to turn the LED on, 0 to turn it off | |
| 26 | * @return 0 if OK, -ve on error | |
| 27 | */ | |
| 28 | int (*set_on)(struct udevice *dev, int on); | |
| 29 | }; | |
| 30 | ||
| 31 | #define led_get_ops(dev) ((struct led_ops *)(dev)->driver->ops) | |
| 32 | ||
| 33 | /** | |
| 34 | * led_get_by_label() - Find an LED device by label | |
| 35 | * | |
| 36 | * @label: LED label to look up | |
| 37 | * @devp: Returns the associated device, if found | |
| fb8a5ffc | 38 | * @return 0 if found, -ENODEV if not found, other -ve on error |
| 5917112c SG |
39 | */ |
| 40 | int led_get_by_label(const char *label, struct udevice **devp); | |
| 41 | ||
| 42 | /** | |
| 43 | * led_set_on() - set the state of an LED | |
| 44 | * | |
| 45 | * @dev: LED device to change | |
| 46 | * @on: 1 to turn the LED on, 0 to turn it off | |
| 47 | * @return 0 if OK, -ve on error | |
| 48 | */ | |
| 49 | int led_set_on(struct udevice *dev, int on); | |
| 50 | ||
| 51 | #endif |