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55d5d3b4 DM |
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 | ||
55d5d3b4 DM |
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 | ||
55d5d3b4 DM |
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 | { | |
6039b7e8 | 73 | return 0; |
55d5d3b4 DM |
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 | { | |
6039b7e8 | 80 | return 0; |
55d5d3b4 DM |
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 | { | |
6039b7e8 GC |
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); | |
55d5d3b4 DM |
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 | ||
55d5d3b4 | 109 | #endif /* _LINUX_MULTICOLOR_LEDS_H_INCLUDED */ |