fa651886ab4fc6f31f7e4f4cf49b4eaaed8118a6
2 * LED IDE-Disk Activity Trigger
4 * Copyright 2006 Openedhand Ltd.
6 * Author: Richard Purdie <rpurdie@openedhand.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/timer.h>
18 #include <linux/leds.h>
20 static void ledtrig_ide_timerfunc(unsigned long data
);
22 DEFINE_LED_TRIGGER(ledtrig_ide
);
23 static DEFINE_TIMER(ledtrig_ide_timer
, ledtrig_ide_timerfunc
, 0, 0);
24 static int ide_activity
;
25 static int ide_lastactivity
;
27 void ledtrig_ide_activity(void)
30 if (!timer_pending(&ledtrig_ide_timer
))
31 mod_timer(&ledtrig_ide_timer
, jiffies
+ msecs_to_jiffies(10));
33 EXPORT_SYMBOL(ledtrig_ide_activity
);
35 static void ledtrig_ide_timerfunc(unsigned long data
)
37 if (ide_lastactivity
!= ide_activity
) {
38 ide_lastactivity
= ide_activity
;
39 led_trigger_event(ledtrig_ide
, LED_FULL
);
40 mod_timer(&ledtrig_ide_timer
, jiffies
+ msecs_to_jiffies(10));
42 led_trigger_event(ledtrig_ide
, LED_OFF
);
46 static int __init
ledtrig_ide_init(void)
48 led_trigger_register_simple("ide-disk", &ledtrig_ide
);
52 static void __exit
ledtrig_ide_exit(void)
54 led_trigger_unregister_simple(ledtrig_ide
);
57 module_init(ledtrig_ide_init
);
58 module_exit(ledtrig_ide_exit
);
60 MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
61 MODULE_DESCRIPTION("LED IDE Disk Activity Trigger");
62 MODULE_LICENSE("GPL");
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