board/atmel/at91rm9200ek/led.c

   1 /*
   2  * (C) Copyright 2006
   3  * Atmel Nordic AB <www.atmel.com>
   4  * Ulf Samuelsson <ulf@atmel.com>
   5  *
   6  * (C) Copyright 2010
   7  * Andreas Bießmann <andreas.devel@gmail.com>
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 #include <common.h>
  29 #include <asm/arch/gpio.h>
  30 #include <asm/arch/at91_pmc.h>
  31
  32 /* bit mask in PIO port B */
  33 #define GREEN_LED       (1<<0)
  34 #define YELLOW_LED      (1<<1)
  35 #define RED_LED         (1<<2)
  36
  37 void    green_LED_on(void)
  38 {
  39         at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE;
  40         writel(GREEN_LED, &pio->piob.codr);
  41 }
  42
  43 void     yellow_LED_on(void)
  44 {
  45         at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE;
  46         writel(YELLOW_LED, &pio->piob.codr);
  47 }
  48
  49 void     red_LED_on(void)
  50 {
  51         at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE;
  52         writel(RED_LED, &pio->piob.codr);
  53 }
  54
  55 void    green_LED_off(void)
  56 {
  57         at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE;
  58         writel(GREEN_LED, &pio->piob.sodr);
  59 }
  60
  61 void    yellow_LED_off(void)
  62 {
  63         at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE;
  64         writel(YELLOW_LED, &pio->piob.sodr);
  65 }
  66
  67 void    red_LED_off(void)
  68 {
  69         at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE;
  70         writel(RED_LED, &pio->piob.sodr);
  71 }
  72
  73 void coloured_LED_init (void)
  74 {
  75         at91_pmc_t *pmc = (at91_pmc_t *)AT91_PMC_BASE;
  76         at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE;
  77
  78         /* Enable PIOB clock */
  79         writel(1 << AT91_ID_PIOB, &pmc->pcer);
  80
  81         /* Disable peripherals on LEDs */
  82         writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.per);
  83         /* Enable pins as outputs */
  84         writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.oer);
  85         /* Turn all LEDs OFF */
  86         writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.sodr);
  87 }