leds/trigger/ledtrig-mtd.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * LED MTD trigger
0004  *
0005  * Copyright 2016 Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
0006  *
0007  * Based on LED IDE-Disk Activity Trigger
0008  *
0009  * Copyright 2006 Openedhand Ltd.
0010  *
0011  * Author: Richard Purdie <rpurdie@openedhand.com>
0012  */
0013
0014 #include <linux/kernel.h>
0015 #include <linux/init.h>
0016 #include <linux/leds.h>
0017
0018 #define BLINK_DELAY 30
0019
0020 DEFINE_LED_TRIGGER(ledtrig_mtd);
0021 DEFINE_LED_TRIGGER(ledtrig_nand);
0022
0023 void ledtrig_mtd_activity(void)
0024 {
0025     unsigned long blink_delay = BLINK_DELAY;
0026
0027     led_trigger_blink_oneshot(ledtrig_mtd,
0028                   &blink_delay, &blink_delay, 0);
0029     led_trigger_blink_oneshot(ledtrig_nand,
0030                   &blink_delay, &blink_delay, 0);
0031 }
0032 EXPORT_SYMBOL(ledtrig_mtd_activity);
0033
0034 static int __init ledtrig_mtd_init(void)
0035 {
0036     led_trigger_register_simple("mtd", &ledtrig_mtd);
0037     led_trigger_register_simple("nand-disk", &ledtrig_nand);
0038
0039     return 0;
0040 }
0041 device_initcall(ledtrig_mtd_init);