1 /*
2  * Copyright 2012, Fabio Baltieri <fabio.baltieri@gmail.com>
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  */
8 
9 #ifndef _CAN_LED_H
10 #define _CAN_LED_H
11 
12 #include <linux/if.h>
13 #include <linux/leds.h>
14 
15 enum can_led_event {
16 	CAN_LED_EVENT_OPEN,
17 	CAN_LED_EVENT_STOP,
18 	CAN_LED_EVENT_TX,
19 	CAN_LED_EVENT_RX,
20 };
21 
22 #ifdef CONFIG_CAN_LEDS
23 
24 /* keep space for interface name + "-tx"/"-rx"/"-rxtx"
25  * suffix and null terminator
26  */
27 #define CAN_LED_NAME_SZ (IFNAMSIZ + 6)
28 
29 void can_led_event(struct net_device *netdev, enum can_led_event event);
30 void devm_can_led_init(struct net_device *netdev);
31 int __init can_led_notifier_init(void);
32 void __exit can_led_notifier_exit(void);
33 
34 #else
35 
can_led_event(struct net_device * netdev,enum can_led_event event)36 static inline void can_led_event(struct net_device *netdev,
37 				 enum can_led_event event)
38 {
39 }
devm_can_led_init(struct net_device * netdev)40 static inline void devm_can_led_init(struct net_device *netdev)
41 {
42 }
can_led_notifier_init(void)43 static inline int can_led_notifier_init(void)
44 {
45 	return 0;
46 }
can_led_notifier_exit(void)47 static inline void can_led_notifier_exit(void)
48 {
49 }
50 
51 #endif
52 
53 #endif /* !_CAN_LED_H */
54