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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 | static 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 | */ | |
61 | void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev); | |
62 | ||
63 | /* Calculate brightness for the monochrome LED cluster */ | |
64 | int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev, | |
65 | enum led_brightness brightness); | |
66 | ||
67 | int devm_led_classdev_multicolor_register_ext(struct device *parent, | |
68 | struct led_classdev_mc *mcled_cdev, | |
69 | struct led_init_data *init_data); | |
70 | ||
71 | static 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 | ||
78 | void devm_led_classdev_multicolor_unregister(struct device *parent, | |
79 | struct led_classdev_mc *mcled_cdev); | |
80 | #else | |
81 | ||
82 | static 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 | ||
89 | static 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 | ||
95 | static inline void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev) {}; | |
96 | static inline int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev, | |
97 | enum led_brightness brightness) | |
98 | { | |
99 | return -EINVAL; | |
100 | } | |
101 | ||
102 | static 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 | ||
109 | static 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 | ||
116 | static 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 */ |