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
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