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| 2 | |
| 3 | * LED Disk Activity Trigger
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| 4 | *
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| 5 | * Copyright 2006 Openedhand Ltd.
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| 6 | *
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| 7 | * Author: Richard Purdie <[email protected]>
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| 8 |
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| 9 |
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| 10 | #include <linux/kernel.h>
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| 11 | #include <linux/init.h>
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| 12 | #include <linux/leds.h>
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| 13 |
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| 14 | #define BLINK_DELAY 30
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| 15 |
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| 16 | DEFINE_LED_TRIGGER(ledtrig_disk);
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| 17 | DEFINE_LED_TRIGGER(ledtrig_disk_read);
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| 18 | DEFINE_LED_TRIGGER(ledtrig_disk_write);
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| 19 |
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| 20 | void ledtrig_disk_activity(bool write)
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| 21 | {
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| 22 | led_trigger_blink_oneshot(ledtrig_disk, BLINK_DELAY, BLINK_DELAY, 0);
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| 23 | if (write)
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| 24 | led_trigger_blink_oneshot(ledtrig_disk_write,
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| 25 | BLINK_DELAY, BLINK_DELAY, 0);
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| 26 | else
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| 27 | led_trigger_blink_oneshot(ledtrig_disk_read,
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| 28 | BLINK_DELAY, BLINK_DELAY, 0);
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| 29 | }
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| 30 | EXPORT_SYMBOL(ledtrig_disk_activity);
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| 31 |
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| 32 | static int __init ledtrig_disk_init(void)
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| 33 | {
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| 34 | led_trigger_register_simple("disk-activity", &ledtrig_disk);
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| 35 | led_trigger_register_simple("disk-read", &ledtrig_disk_read);
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| 36 | led_trigger_register_simple("disk-write", &ledtrig_disk_write);
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| 37 |
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| 38 | return 0;
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| 39 | }
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| 40 | device_initcall(ledtrig_disk_init);
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