Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
12struct mc_subled {
13 unsigned int color_index;
14 unsigned int brightness;
15 unsigned int intensity;
16 unsigned int channel;
17};
18
19struct 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
27static 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 */
43int led_classdev_multicolor_register_ext(struct device *parent,
44 struct led_classdev_mc *mcled_cdev,
45 struct led_init_data *init_data);
46
47static inline int led_classdev_multicolor_register(struct device *parent,
48 struct led_classdev_mc *mcled_cdev)
49{
50 return led_classdev_multicolor_register_ext(parent, mcled_cdev, NULL);
51}
52
53/**
54 * led_classdev_multicolor_unregister - unregisters an object of led_classdev
55 * class with support for multicolor LEDs
56 * @mcled_cdev: the multicolor LED to unregister
57 *
58 * Unregister a previously registered via led_classdev_multicolor_register
59 * object
60 */
61void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev);
62
63/* Calculate brightness for the monochrome LED cluster */
64int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev,
65 enum led_brightness brightness);
66
67int devm_led_classdev_multicolor_register_ext(struct device *parent,
68 struct led_classdev_mc *mcled_cdev,
69 struct led_init_data *init_data);
70
71static inline int devm_led_classdev_multicolor_register(struct device *parent,
72 struct led_classdev_mc *mcled_cdev)
73{
74 return devm_led_classdev_multicolor_register_ext(parent, mcled_cdev,
75 NULL);
76}
77
78void devm_led_classdev_multicolor_unregister(struct device *parent,
79 struct led_classdev_mc *mcled_cdev);
80#else
81
82static inline int led_classdev_multicolor_register_ext(struct device *parent,
83 struct led_classdev_mc *mcled_cdev,
84 struct led_init_data *init_data)
85{
86 return -EINVAL;
87}
88
89static inline int led_classdev_multicolor_register(struct device *parent,
90 struct led_classdev_mc *mcled_cdev)
91{
92 return led_classdev_multicolor_register_ext(parent, mcled_cdev, NULL);
93}
94
95static inline void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev) {};
96static inline int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev,
97 enum led_brightness brightness)
98{
99 return -EINVAL;
100}
101
102static inline int devm_led_classdev_multicolor_register_ext(struct device *parent,
103 struct led_classdev_mc *mcled_cdev,
104 struct led_init_data *init_data)
105{
106 return -EINVAL;
107}
108
109static inline int devm_led_classdev_multicolor_register(struct device *parent,
110 struct led_classdev_mc *mcled_cdev)
111{
112 return devm_led_classdev_multicolor_register_ext(parent, mcled_cdev,
113 NULL);
114}
115
116static inline void devm_led_classdev_multicolor_unregister(struct device *parent,
117 struct led_classdev_mc *mcled_cdev)
118{};
119
120#endif /* IS_ENABLED(CONFIG_LEDS_CLASS_MULTICOLOR) */
121#endif /* _LINUX_MULTICOLOR_LEDS_H_INCLUDED */