diff options
Diffstat (limited to 'u-boot/board/atmel/at91rm9200ek/led.c')
-rw-r--r-- | u-boot/board/atmel/at91rm9200ek/led.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/u-boot/board/atmel/at91rm9200ek/led.c b/u-boot/board/atmel/at91rm9200ek/led.c new file mode 100644 index 0000000..8d512e0 --- /dev/null +++ b/u-boot/board/atmel/at91rm9200ek/led.c @@ -0,0 +1,87 @@ +/* + * (C) Copyright 2006 + * Atmel Nordic AB <www.atmel.com> + * Ulf Samuelsson <ulf@atmel.com> + * + * (C) Copyright 2010 + * Andreas Bießmann <andreas.devel@gmail.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/arch/gpio.h> +#include <asm/arch/at91_pmc.h> + +/* bit mask in PIO port B */ +#define GREEN_LED (1<<0) +#define YELLOW_LED (1<<1) +#define RED_LED (1<<2) + +void green_LED_on(void) +{ + at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE; + writel(GREEN_LED, &pio->piob.codr); +} + +void yellow_LED_on(void) +{ + at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE; + writel(YELLOW_LED, &pio->piob.codr); +} + +void red_LED_on(void) +{ + at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE; + writel(RED_LED, &pio->piob.codr); +} + +void green_LED_off(void) +{ + at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE; + writel(GREEN_LED, &pio->piob.sodr); +} + +void yellow_LED_off(void) +{ + at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE; + writel(YELLOW_LED, &pio->piob.sodr); +} + +void red_LED_off(void) +{ + at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE; + writel(RED_LED, &pio->piob.sodr); +} + +void coloured_LED_init (void) +{ + at91_pmc_t *pmc = (at91_pmc_t *)AT91_PMC_BASE; + at91_pio_t *pio = (at91_pio_t *)AT91_PIO_BASE; + + /* Enable PIOB clock */ + writel(1 << AT91_ID_PIOB, &pmc->pcer); + + /* Disable peripherals on LEDs */ + writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.per); + /* Enable pins as outputs */ + writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.oer); + /* Turn all LEDs OFF */ + writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.sodr); +} |