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
lcdev_to_mccdev(struct led_classdev * led_cdev)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
led_classdev_multicolor_register(struct device * parent,struct led_classdev_mc * mcled_cdev)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
devm_led_classdev_multicolor_register(struct device * parent,struct led_classdev_mc * mcled_cdev)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
led_classdev_multicolor_register_ext(struct device * parent,struct led_classdev_mc * mcled_cdev,struct led_init_data * init_data)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
led_classdev_multicolor_register(struct device * parent,struct led_classdev_mc * mcled_cdev)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
led_classdev_multicolor_unregister(struct led_classdev_mc * mcled_cdev)95 static inline void led_classdev_multicolor_unregister(struct led_classdev_mc *mcled_cdev) {};
led_mc_calc_color_components(struct led_classdev_mc * mcled_cdev,enum led_brightness brightness)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
devm_led_classdev_multicolor_register_ext(struct device * parent,struct led_classdev_mc * mcled_cdev,struct led_init_data * init_data)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
devm_led_classdev_multicolor_register(struct device * parent,struct led_classdev_mc * mcled_cdev)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
devm_led_classdev_multicolor_unregister(struct device * parent,struct led_classdev_mc * mcled_cdev)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 */
122