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/io.h> 30 #include <asm/arch/hardware.h> 31 #include <asm/arch/at91_pmc.h> 32 #include <asm/arch/at91_pio.h> 33 34 /* bit mask in PIO port B */ 35 #define GREEN_LED (1<<0) 36 #define YELLOW_LED (1<<1) 37 #define RED_LED (1<<2) 38 39 void green_led_on(void) 40 { 41 at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO; 42 writel(GREEN_LED, &pio->piob.codr); 43 } 44 45 void yellow_led_on(void) 46 { 47 at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO; 48 writel(YELLOW_LED, &pio->piob.codr); 49 } 50 51 void red_led_on(void) 52 { 53 at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO; 54 writel(RED_LED, &pio->piob.codr); 55 } 56 57 void green_led_off(void) 58 { 59 at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO; 60 writel(GREEN_LED, &pio->piob.sodr); 61 } 62 63 void yellow_led_off(void) 64 { 65 at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO; 66 writel(YELLOW_LED, &pio->piob.sodr); 67 } 68 69 void red_led_off(void) 70 { 71 at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO; 72 writel(RED_LED, &pio->piob.sodr); 73 } 74 75 void coloured_LED_init (void) 76 { 77 at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC; 78 at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO; 79 80 /* Enable PIOB clock */ 81 writel(1 << ATMEL_ID_PIOB, &pmc->pcer); 82 83 /* Disable peripherals on LEDs */ 84 writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.per); 85 /* Enable pins as outputs */ 86 writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.oer); 87 /* Turn all LEDs OFF */ 88 writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.sodr); 89 } 90