// SPDX-License-Identifier: GPL-2.0-only
/*
 * LED Disk Activity Trigger
 *
 * Copyright 2006 Openedhand Ltd.
 *
 * Author: Richard Purdie <rpurdie@openedhand.com>
 */

#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);

void ledtrig_disk_activity(bool write)
{
        led_trigger_blink_oneshot(ledtrig_disk, 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);

        return 0;
}
device_initcall(ledtrig_disk_init);