52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/*
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* LED Disk Activity Trigger
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*
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* Copyright 2006 Openedhand Ltd.
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*
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* Author: Richard Purdie <rpurdie@openedhand.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/leds.h>
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#define BLINK_DELAY 30
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DEFINE_LED_TRIGGER(ledtrig_disk);
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DEFINE_LED_TRIGGER(ledtrig_disk_read);
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DEFINE_LED_TRIGGER(ledtrig_disk_write);
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DEFINE_LED_TRIGGER(ledtrig_ide);
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void ledtrig_disk_activity(bool write)
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{
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unsigned long blink_delay = BLINK_DELAY;
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led_trigger_blink_oneshot(ledtrig_disk,
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&blink_delay, &blink_delay, 0);
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led_trigger_blink_oneshot(ledtrig_ide,
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&blink_delay, &blink_delay, 0);
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if (write)
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led_trigger_blink_oneshot(ledtrig_disk_write,
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&blink_delay, &blink_delay, 0);
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else
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led_trigger_blink_oneshot(ledtrig_disk_read,
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&blink_delay, &blink_delay, 0);
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}
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EXPORT_SYMBOL(ledtrig_disk_activity);
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static int __init ledtrig_disk_init(void)
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{
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led_trigger_register_simple("disk-activity", &ledtrig_disk);
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led_trigger_register_simple("disk-read", &ledtrig_disk_read);
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led_trigger_register_simple("disk-write", &ledtrig_disk_write);
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led_trigger_register_simple("ide-disk", &ledtrig_ide);
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return 0;
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}
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device_initcall(ledtrig_disk_init);
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