| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* LED Multicolor class interface |
| 3 | * Copyright (C) 2019-20 Texas Instruments Incorporated - http://www.ti.com/ |
| 4 | */ |
| 5 | |
| 6 | #ifndef _LINUX_MULTICOLOR_LEDS_H_INCLUDED |
| 7 | #define _LINUX_MULTICOLOR_LEDS_H_INCLUDED |
| 8 | |
| 9 | #include <linux/leds.h> |
| 10 | #include <dt-bindings/leds/common.h> |
| 11 | |
| 12 | struct mc_subled { |
| 13 | unsigned int color_index; |
| 14 | unsigned int brightness; |
| 15 | unsigned int intensity; |
| 16 | unsigned int channel; |
| 17 | }; |
| 18 | |
| 19 | struct led_classdev_mc { |
| 20 | /* led class device */ |
| 21 | struct led_classdev led_cdev; |
| 22 | unsigned int num_colors; |
| 23 | |
| 24 | struct mc_subled *subled_info; |
| 25 | }; |
| 26 | |
| 27 | static inline struct led_classdev_mc *lcdev_to_mccdev( |
| 28 | struct led_classdev *led_cdev) |
| 29 | { |
| 30 | return container_of(led_cdev, struct led_classdev_mc, led_cdev); |
| 31 | } |
| 32 | |
| 33 | #if IS_ENABLED(CONFIG_LEDS_CLASS_MULTICOLOR) |
| 34 | /** |
| 35 | * led_classdev_multicolor_register_ext - register a new object of led_classdev |
| 36 | * class with support for multicolor LEDs |
| 37 | * @parent: the multicolor LED to register |
| 38 | * @mcled_cdev: the led_classdev_mc structure for this device |
| 39 | * @init_data: the LED class multicolor device initialization data |
| 40 | * |
| 41 | * Returns: 0 on success or negative error value on failure |
| 42 | */ |
| 43 | int led_classdev_multicolor_register_ext(struct device *parent, |
| 44 | struct led_classdev_mc *mcled_cdev, |
| 45 | struct led_init_data *init_data); |
| 46 | |
| 47 | /** |
| 48 | * led_classdev_multicolor_unregister - unregisters an object of led_classdev |
| 49 | * class with support for multicolor LEDs |
| 50 | * @mcled_cdev: the multicolor LED to unregister |
| 51 | * |
| 52 | * Unregister a previously registered via led_classdev_multicolor_register |
| 53 | * object |
| 54 | */ |
| 55 | void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev); |
| 56 | |
| 57 | /* Calculate brightness for the monochrome LED cluster */ |
| 58 | int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev, |
| 59 | enum led_brightness brightness); |
| 60 | |
| 61 | int devm_led_classdev_multicolor_register_ext(struct device *parent, |
| 62 | struct led_classdev_mc *mcled_cdev, |
| 63 | struct led_init_data *init_data); |
| 64 | |
| 65 | void devm_led_classdev_multicolor_unregister(struct device *parent, |
| 66 | struct led_classdev_mc *mcled_cdev); |
| 67 | #else |
| 68 | |
| 69 | static inline int led_classdev_multicolor_register_ext(struct device *parent, |
| 70 | struct led_classdev_mc *mcled_cdev, |
| 71 | struct led_init_data *init_data) |
| 72 | { |
| 73 | return 0; |
| 74 | } |
| 75 | |
| 76 | static inline void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev) {}; |
| 77 | static inline int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev, |
| 78 | enum led_brightness brightness) |
| 79 | { |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | static inline int devm_led_classdev_multicolor_register_ext(struct device *parent, |
| 84 | struct led_classdev_mc *mcled_cdev, |
| 85 | struct led_init_data *init_data) |
| 86 | { |
| 87 | return 0; |
| 88 | } |
| 89 | |
| 90 | static inline void devm_led_classdev_multicolor_unregister(struct device *parent, |
| 91 | struct led_classdev_mc *mcled_cdev) |
| 92 | {}; |
| 93 | |
| 94 | #endif /* IS_ENABLED(CONFIG_LEDS_CLASS_MULTICOLOR) */ |
| 95 | |
| 96 | static inline int led_classdev_multicolor_register(struct device *parent, |
| 97 | struct led_classdev_mc *mcled_cdev) |
| 98 | { |
| 99 | return led_classdev_multicolor_register_ext(parent, mcled_cdev, NULL); |
| 100 | } |
| 101 | |
| 102 | static inline int devm_led_classdev_multicolor_register(struct device *parent, |
| 103 | struct led_classdev_mc *mcled_cdev) |
| 104 | { |
| 105 | return devm_led_classdev_multicolor_register_ext(parent, mcled_cdev, |
| 106 | NULL); |
| 107 | } |
| 108 | |
| 109 | #endif /* _LINUX_MULTICOLOR_LEDS_H_INCLUDED */ |