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, 23ddae9fcdSSimon Glass 24ddae9fcdSSimon Glass LEDST_COUNT, 25ddae9fcdSSimon Glass }; 26ddae9fcdSSimon Glass 275917112cSSimon Glass struct led_ops { 285917112cSSimon Glass /** 29ddae9fcdSSimon Glass * set_state() - set the state of an LED 305917112cSSimon Glass * 315917112cSSimon Glass * @dev: LED device to change 32ddae9fcdSSimon Glass * @state: LED state to set 335917112cSSimon Glass * @return 0 if OK, -ve on error 345917112cSSimon Glass */ 35ddae9fcdSSimon Glass int (*set_state)(struct udevice *dev, enum led_state_t state); 36*8f4b6123SSimon Glass 37*8f4b6123SSimon Glass /** 38*8f4b6123SSimon Glass * led_get_state() - get the state of an LED 39*8f4b6123SSimon Glass * 40*8f4b6123SSimon Glass * @dev: LED device to change 41*8f4b6123SSimon Glass * @return LED state led_state_t, or -ve on error 42*8f4b6123SSimon Glass */ 43*8f4b6123SSimon Glass enum led_state_t (*get_state)(struct udevice *dev); 445917112cSSimon Glass }; 455917112cSSimon Glass 465917112cSSimon Glass #define led_get_ops(dev) ((struct led_ops *)(dev)->driver->ops) 475917112cSSimon Glass 485917112cSSimon Glass /** 495917112cSSimon Glass * led_get_by_label() - Find an LED device by label 505917112cSSimon Glass * 515917112cSSimon Glass * @label: LED label to look up 525917112cSSimon Glass * @devp: Returns the associated device, if found 53fb8a5ffcSSimon Glass * @return 0 if found, -ENODEV if not found, other -ve on error 545917112cSSimon Glass */ 555917112cSSimon Glass int led_get_by_label(const char *label, struct udevice **devp); 565917112cSSimon Glass 575917112cSSimon Glass /** 58ddae9fcdSSimon Glass * led_set_state() - set the state of an LED 595917112cSSimon Glass * 605917112cSSimon Glass * @dev: LED device to change 61ddae9fcdSSimon Glass * @state: LED state to set 625917112cSSimon Glass * @return 0 if OK, -ve on error 635917112cSSimon Glass */ 64ddae9fcdSSimon Glass int led_set_state(struct udevice *dev, enum led_state_t state); 655917112cSSimon Glass 66*8f4b6123SSimon Glass /** 67*8f4b6123SSimon Glass * led_get_state() - get the state of an LED 68*8f4b6123SSimon Glass * 69*8f4b6123SSimon Glass * @dev: LED device to change 70*8f4b6123SSimon Glass * @return LED state led_state_t, or -ve on error 71*8f4b6123SSimon Glass */ 72*8f4b6123SSimon Glass enum led_state_t led_get_state(struct udevice *dev); 73*8f4b6123SSimon Glass 745917112cSSimon Glass #endif 75