1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * LED Disk Activity Trigger
4 *
5 * Copyright 2006 Openedhand Ltd.
6 *
7 * Author: Richard Purdie <rpurdie@openedhand.com>
8 */
9
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/leds.h>
13
14#define BLINK_DELAY 30
15
16DEFINE_LED_TRIGGER(ledtrig_disk);
17DEFINE_LED_TRIGGER(ledtrig_disk_read);
18DEFINE_LED_TRIGGER(ledtrig_disk_write);
19
20void ledtrig_disk_activity(bool write)
21{
22	led_trigger_blink_oneshot(ledtrig_disk, BLINK_DELAY, BLINK_DELAY, 0);
23	if (write)
24		led_trigger_blink_oneshot(ledtrig_disk_write,
25					  BLINK_DELAY, BLINK_DELAY, 0);
26	else
27		led_trigger_blink_oneshot(ledtrig_disk_read,
28					  BLINK_DELAY, BLINK_DELAY, 0);
29}
30EXPORT_SYMBOL(ledtrig_disk_activity);
31
32static int __init ledtrig_disk_init(void)
33{
34	led_trigger_register_simple("disk-activity", &ledtrig_disk);
35	led_trigger_register_simple("disk-read", &ledtrig_disk_read);
36	led_trigger_register_simple("disk-write", &ledtrig_disk_write);
37
38	return 0;
39}
40device_initcall(ledtrig_disk_init);
41