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