| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * LED Disk Activity Trigger |
| 3 | * |
| 4 | * Copyright 2006 Openedhand Ltd. |
| 5 | * |
| 6 | * Author: Richard Purdie <rpurdie@openedhand.com> |
| 7 | * |
| 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. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/leds.h> |
| 17 | |
| 18 | #define BLINK_DELAY 30 |
| 19 | |
| 20 | DEFINE_LED_TRIGGER(ledtrig_disk); |
| 21 | DEFINE_LED_TRIGGER(ledtrig_disk_read); |
| 22 | DEFINE_LED_TRIGGER(ledtrig_disk_write); |
| 23 | DEFINE_LED_TRIGGER(ledtrig_ide); |
| 24 | |
| 25 | void ledtrig_disk_activity(bool write) |
| 26 | { |
| 27 | unsigned long blink_delay = BLINK_DELAY; |
| 28 | |
| 29 | led_trigger_blink_oneshot(ledtrig_disk, |
| 30 | &blink_delay, &blink_delay, 0); |
| 31 | led_trigger_blink_oneshot(ledtrig_ide, |
| 32 | &blink_delay, &blink_delay, 0); |
| 33 | if (write) |
| 34 | led_trigger_blink_oneshot(ledtrig_disk_write, |
| 35 | &blink_delay, &blink_delay, 0); |
| 36 | else |
| 37 | led_trigger_blink_oneshot(ledtrig_disk_read, |
| 38 | &blink_delay, &blink_delay, 0); |
| 39 | } |
| 40 | EXPORT_SYMBOL(ledtrig_disk_activity); |
| 41 | |
| 42 | static int __init ledtrig_disk_init(void) |
| 43 | { |
| 44 | led_trigger_register_simple("disk-activity", &ledtrig_disk); |
| 45 | led_trigger_register_simple("disk-read", &ledtrig_disk_read); |
| 46 | led_trigger_register_simple("disk-write", &ledtrig_disk_write); |
| 47 | led_trigger_register_simple("ide-disk", &ledtrig_ide); |
| 48 | |
| 49 | return 0; |
| 50 | } |
| 51 | device_initcall(ledtrig_disk_init); |