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 */ |
110 | |