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 | /** |
34 | * led_classdev_multicolor_register_ext - register a new object of led_classdev |
35 | * class with support for multicolor LEDs |
36 | * @parent: the multicolor LED to register |
37 | * @mcled_cdev: the led_classdev_mc structure for this device |
38 | * @init_data: the LED class multicolor device initialization data |
39 | * |
40 | * Returns: 0 on success or negative error value on failure |
41 | */ |
42 | int led_classdev_multicolor_register_ext(struct device *parent, |
43 | struct led_classdev_mc *mcled_cdev, |
44 | struct led_init_data *init_data); |
45 | |
46 | /** |
47 | * led_classdev_multicolor_unregister - unregisters an object of led_classdev |
48 | * class with support for multicolor LEDs |
49 | * @mcled_cdev: the multicolor LED to unregister |
50 | * |
51 | * Unregister a previously registered via led_classdev_multicolor_register |
52 | * object |
53 | */ |
54 | void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev); |
55 | |
56 | /* Calculate brightness for the monochrome LED cluster */ |
57 | int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev, |
58 | enum led_brightness brightness); |
59 | |
60 | int devm_led_classdev_multicolor_register_ext(struct device *parent, |
61 | struct led_classdev_mc *mcled_cdev, |
62 | struct led_init_data *init_data); |
63 | |
64 | void devm_led_classdev_multicolor_unregister(struct device *parent, |
65 | struct led_classdev_mc *mcled_cdev); |
66 | |
67 | static inline int led_classdev_multicolor_register(struct device *parent, |
68 | struct led_classdev_mc *mcled_cdev) |
69 | { |
70 | return led_classdev_multicolor_register_ext(parent, mcled_cdev, NULL); |
71 | } |
72 | |
73 | static inline int devm_led_classdev_multicolor_register(struct device *parent, |
74 | struct led_classdev_mc *mcled_cdev) |
75 | { |
76 | return devm_led_classdev_multicolor_register_ext(parent, mcled_cdev, |
77 | NULL); |
78 | } |
79 | |
80 | #endif /* _LINUX_MULTICOLOR_LEDS_H_INCLUDED */ |
81 | |