1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * LED Disk Activity Trigger
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2006 Openedhand Ltd.
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Author: Richard Purdie <rpurdie@openedhand.com>
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/kernel.h>
11*4882a593Smuzhiyun #include <linux/init.h>
12*4882a593Smuzhiyun #include <linux/leds.h>
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #define BLINK_DELAY 30
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun DEFINE_LED_TRIGGER(ledtrig_disk);
17*4882a593Smuzhiyun DEFINE_LED_TRIGGER(ledtrig_disk_read);
18*4882a593Smuzhiyun DEFINE_LED_TRIGGER(ledtrig_disk_write);
19*4882a593Smuzhiyun DEFINE_LED_TRIGGER(ledtrig_ide);
20*4882a593Smuzhiyun
ledtrig_disk_activity(bool write)21*4882a593Smuzhiyun void ledtrig_disk_activity(bool write)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun unsigned long blink_delay = BLINK_DELAY;
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun led_trigger_blink_oneshot(ledtrig_disk,
26*4882a593Smuzhiyun &blink_delay, &blink_delay, 0);
27*4882a593Smuzhiyun led_trigger_blink_oneshot(ledtrig_ide,
28*4882a593Smuzhiyun &blink_delay, &blink_delay, 0);
29*4882a593Smuzhiyun if (write)
30*4882a593Smuzhiyun led_trigger_blink_oneshot(ledtrig_disk_write,
31*4882a593Smuzhiyun &blink_delay, &blink_delay, 0);
32*4882a593Smuzhiyun else
33*4882a593Smuzhiyun led_trigger_blink_oneshot(ledtrig_disk_read,
34*4882a593Smuzhiyun &blink_delay, &blink_delay, 0);
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun EXPORT_SYMBOL(ledtrig_disk_activity);
37*4882a593Smuzhiyun
ledtrig_disk_init(void)38*4882a593Smuzhiyun static int __init ledtrig_disk_init(void)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun led_trigger_register_simple("disk-activity", &ledtrig_disk);
41*4882a593Smuzhiyun led_trigger_register_simple("disk-read", &ledtrig_disk_read);
42*4882a593Smuzhiyun led_trigger_register_simple("disk-write", &ledtrig_disk_write);
43*4882a593Smuzhiyun led_trigger_register_simple("ide-disk", &ledtrig_ide);
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun return 0;
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun device_initcall(ledtrig_disk_init);
48