This source file includes following definitions.
- usb_led_activity
- ledtrig_usb_init
- ledtrig_usb_exit
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8 #include <linux/module.h>
9 #include <linux/kernel.h>
10 #include <linux/init.h>
11 #include <linux/leds.h>
12 #include <linux/usb.h>
13 #include "common.h"
14
15 #define BLINK_DELAY 30
16
17 static unsigned long usb_blink_delay = BLINK_DELAY;
18
19 DEFINE_LED_TRIGGER(ledtrig_usb_gadget);
20 DEFINE_LED_TRIGGER(ledtrig_usb_host);
21
22 void usb_led_activity(enum usb_led_event ev)
23 {
24 struct led_trigger *trig = NULL;
25
26 switch (ev) {
27 case USB_LED_EVENT_GADGET:
28 trig = ledtrig_usb_gadget;
29 break;
30 case USB_LED_EVENT_HOST:
31 trig = ledtrig_usb_host;
32 break;
33 }
34
35 led_trigger_blink_oneshot(trig, &usb_blink_delay, &usb_blink_delay, 0);
36 }
37 EXPORT_SYMBOL_GPL(usb_led_activity);
38
39
40 void __init ledtrig_usb_init(void)
41 {
42 led_trigger_register_simple("usb-gadget", &ledtrig_usb_gadget);
43 led_trigger_register_simple("usb-host", &ledtrig_usb_host);
44 }
45
46 void __exit ledtrig_usb_exit(void)
47 {
48 led_trigger_unregister_simple(ledtrig_usb_gadget);
49 led_trigger_unregister_simple(ledtrig_usb_host);
50 }