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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * LED Disk Activity Trigger4 *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 3015 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 else27 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