drivers/leds/trigger/ledtrig-mtd.c

   1 /*
   2  * LED MTD trigger
   3  *
   4  * Copyright 2016 Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
   5  *
   6  * Based on LED IDE-Disk Activity Trigger
   7  *
   8  * Copyright 2006 Openedhand Ltd.
   9  *
  10  * Author: Richard Purdie <rpurdie@openedhand.com>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  *
  16  */
  17
  18 #include <linux/kernel.h>
  19 #include <linux/init.h>
  20 #include <linux/leds.h>
  21
  22 #define BLINK_DELAY 30
  23
  24 DEFINE_LED_TRIGGER(ledtrig_mtd);
  25 DEFINE_LED_TRIGGER(ledtrig_nand);
  26
  27 void ledtrig_mtd_activity(void)
  28 {
  29         unsigned long blink_delay = BLINK_DELAY;
  30
  31         led_trigger_blink_oneshot(ledtrig_mtd,
  32                                   &blink_delay, &blink_delay, 0);
  33         led_trigger_blink_oneshot(ledtrig_nand,
  34                                   &blink_delay, &blink_delay, 0);
  35 }
  36 EXPORT_SYMBOL(ledtrig_mtd_activity);
  37
  38 static int __init ledtrig_mtd_init(void)
  39 {
  40         led_trigger_register_simple("mtd", &ledtrig_mtd);
  41         led_trigger_register_simple("nand-disk", &ledtrig_nand);
  42
  43         return 0;
  44 }
  45 device_initcall(ledtrig_mtd_init);