drivers/misc/gpio_led.c

   1 /*
   2  * Status LED driver based on GPIO access conventions of Linux
   3  *
   4  * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #include <common.h>
  12 #include <status_led.h>
  13 #include <asm/gpio.h>
  14
  15 /* assume led is active low */
  16
  17 void __led_init(led_id_t mask, int state)
  18 {
  19         gpio_direction_output(mask, (state == STATUS_LED_ON) ? 0 : 1);
  20 }
  21
  22 void __led_set(led_id_t mask, int state)
  23 {
  24         gpio_set_value(mask, (state == STATUS_LED_ON) ? 0 : 1);
  25 }
  26
  27 void __led_toggle(led_id_t mask)
  28 {
  29         gpio_set_value(mask, !gpio_get_value(mask));
  30 }