1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * LED MTD trigger 4 * 5 * Copyright 2016 Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> 6 * 7 * Based on LED IDE-Disk Activity Trigger 8 * 9 * Copyright 2006 Openedhand Ltd. 10 * 11 * Author: Richard Purdie <rpurdie@openedhand.com> 12 */ 13 14 #include <linux/kernel.h> 15 #include <linux/init.h> 16 #include <linux/leds.h> 17 18 #define BLINK_DELAY 30 19 20 DEFINE_LED_TRIGGER(ledtrig_mtd); 21 DEFINE_LED_TRIGGER(ledtrig_nand); 22 23 void ledtrig_mtd_activity(void) 24 { 25 unsigned long blink_delay = BLINK_DELAY; 26 27 led_trigger_blink_oneshot(ledtrig_mtd, 28 &blink_delay, &blink_delay, 0); 29 led_trigger_blink_oneshot(ledtrig_nand, 30 &blink_delay, &blink_delay, 0); 31 } 32 EXPORT_SYMBOL(ledtrig_mtd_activity); 33 34 static int __init ledtrig_mtd_init(void) 35 { 36 led_trigger_register_simple("mtd", &ledtrig_mtd); 37 led_trigger_register_simple("nand-disk", &ledtrig_nand); 38 39 return 0; 40 } 41 device_initcall(ledtrig_mtd_init); 42