drivers/leds/trigger/ledtrig-mtd.c

   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         led_trigger_blink_oneshot(ledtrig_mtd, BLINK_DELAY, BLINK_DELAY, 0);
  26         led_trigger_blink_oneshot(ledtrig_nand, BLINK_DELAY, BLINK_DELAY, 0);
  27 }
  28 EXPORT_SYMBOL(ledtrig_mtd_activity);
  29
  30 static int __init ledtrig_mtd_init(void)
  31 {
  32         led_trigger_register_simple("mtd", &ledtrig_mtd);
  33         led_trigger_register_simple("nand-disk", &ledtrig_nand);
  34
  35         return 0;
  36 }
  37 device_initcall(ledtrig_mtd_init);