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
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
65 void devm_led_classdev_multicolor_unregister(struct device *parent,
66 struct led_classdev_mc *mcled_cdev);
67 #else
68
led_classdev_multicolor_register_ext(struct device * parent,struct led_classdev_mc * mcled_cdev,struct led_init_data * init_data)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 {
73 return 0;
74 }
75
led_classdev_multicolor_unregister(struct led_classdev_mc * mcled_cdev)76 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)77 static inline int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev,
78 enum led_brightness brightness)
79 {
80 return 0;
81 }
82
devm_led_classdev_multicolor_register_ext(struct device * parent,struct led_classdev_mc * mcled_cdev,struct led_init_data * init_data)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 {
87 return 0;
88 }
89
devm_led_classdev_multicolor_unregister(struct device * parent,struct led_classdev_mc * mcled_cdev)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
led_classdev_multicolor_register(struct device * parent,struct led_classdev_mc * mcled_cdev)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);
100 }
101
devm_led_classdev_multicolor_register(struct device * parent,struct led_classdev_mc * mcled_cdev)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
109 #endif /* _LINUX_MULTICOLOR_LEDS_H_INCLUDED */
110