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 #ifndef __LED_H 95917112cSSimon Glass #define __LED_H 105917112cSSimon Glass 115917112cSSimon Glass /** 1256e19871SSimon Glass * struct led_uc_plat - Platform data the uclass stores about each device 135917112cSSimon Glass * 145917112cSSimon Glass * @label: LED label 155917112cSSimon Glass */ 1656e19871SSimon Glass struct led_uc_plat { 175917112cSSimon Glass const char *label; 185917112cSSimon Glass }; 195917112cSSimon Glass 20ddae9fcdSSimon Glass enum led_state_t { 21ddae9fcdSSimon Glass LEDST_OFF = 0, 22ddae9fcdSSimon Glass LEDST_ON = 1, 23*9413ad4fSSimon Glass LEDST_TOGGLE, 24ddae9fcdSSimon Glass 25ddae9fcdSSimon Glass LEDST_COUNT, 26ddae9fcdSSimon Glass }; 27ddae9fcdSSimon Glass 285917112cSSimon Glass struct led_ops { 295917112cSSimon Glass /** 30ddae9fcdSSimon Glass * set_state() - set the state of an LED 315917112cSSimon Glass * 325917112cSSimon Glass * @dev: LED device to change 33ddae9fcdSSimon Glass * @state: LED state to set 345917112cSSimon Glass * @return 0 if OK, -ve on error 355917112cSSimon Glass */ 36ddae9fcdSSimon Glass int (*set_state)(struct udevice *dev, enum led_state_t state); 378f4b6123SSimon Glass 388f4b6123SSimon Glass /** 398f4b6123SSimon Glass * led_get_state() - get the state of an LED 408f4b6123SSimon Glass * 418f4b6123SSimon Glass * @dev: LED device to change 428f4b6123SSimon Glass * @return LED state led_state_t, or -ve on error 438f4b6123SSimon Glass */ 448f4b6123SSimon Glass enum led_state_t (*get_state)(struct udevice *dev); 455917112cSSimon Glass }; 465917112cSSimon Glass 475917112cSSimon Glass #define led_get_ops(dev) ((struct led_ops *)(dev)->driver->ops) 485917112cSSimon Glass 495917112cSSimon Glass /** 505917112cSSimon Glass * led_get_by_label() - Find an LED device by label 515917112cSSimon Glass * 525917112cSSimon Glass * @label: LED label to look up 535917112cSSimon Glass * @devp: Returns the associated device, if found 54fb8a5ffcSSimon Glass * @return 0 if found, -ENODEV if not found, other -ve on error 555917112cSSimon Glass */ 565917112cSSimon Glass int led_get_by_label(const char *label, struct udevice **devp); 575917112cSSimon Glass 585917112cSSimon Glass /** 59ddae9fcdSSimon Glass * led_set_state() - set the state of an LED 605917112cSSimon Glass * 615917112cSSimon Glass * @dev: LED device to change 62ddae9fcdSSimon Glass * @state: LED state to set 635917112cSSimon Glass * @return 0 if OK, -ve on error 645917112cSSimon Glass */ 65ddae9fcdSSimon Glass int led_set_state(struct udevice *dev, enum led_state_t state); 665917112cSSimon Glass 678f4b6123SSimon Glass /** 688f4b6123SSimon Glass * led_get_state() - get the state of an LED 698f4b6123SSimon Glass * 708f4b6123SSimon Glass * @dev: LED device to change 718f4b6123SSimon Glass * @return LED state led_state_t, or -ve on error 728f4b6123SSimon Glass */ 738f4b6123SSimon Glass enum led_state_t led_get_state(struct udevice *dev); 748f4b6123SSimon Glass 755917112cSSimon Glass #endif 76