1 /* 2 * Copyright (c) 2010 Texas Instruments, Inc. 3 * Jason Kridner <jkridner@beagleboard.org> 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation; either version 2 of 8 * the License, or (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 18 * MA 02111-1307 USA 19 */ 20 #include <common.h> 21 #include <status_led.h> 22 #include <asm/arch/cpu.h> 23 #include <asm/io.h> 24 #include <asm/arch/sys_proto.h> 25 #include <asm/gpio.h> 26 27 /* GPIO pins for the LEDs */ 28 #define BEAGLE_LED_USR0 150 29 #define BEAGLE_LED_USR1 149 30 31 #ifdef STATUS_LED_GREEN 32 void green_led_off(void) 33 { 34 __led_set (STATUS_LED_GREEN, 0); 35 } 36 37 void green_led_on(void) 38 { 39 __led_set (STATUS_LED_GREEN, 1); 40 } 41 #endif 42 43 void __led_init (led_id_t mask, int state) 44 { 45 __led_set (mask, state); 46 } 47 48 void __led_toggle (led_id_t mask) 49 { 50 int state, toggle_gpio = 0; 51 #ifdef STATUS_LED_BIT 52 if (!toggle_gpio && STATUS_LED_BIT & mask) 53 toggle_gpio = BEAGLE_LED_USR0; 54 #endif 55 #ifdef STATUS_LED_BIT1 56 if (!toggle_gpio && STATUS_LED_BIT1 & mask) 57 toggle_gpio = BEAGLE_LED_USR1; 58 #endif 59 if (toggle_gpio) { 60 if (!gpio_request(toggle_gpio, "")) { 61 gpio_direction_output(toggle_gpio, 0); 62 state = gpio_get_value(toggle_gpio); 63 gpio_set_value(toggle_gpio, !state); 64 } 65 } 66 } 67 68 void __led_set (led_id_t mask, int state) 69 { 70 #ifdef STATUS_LED_BIT 71 if (STATUS_LED_BIT & mask) { 72 if (!gpio_request(BEAGLE_LED_USR0, "")) { 73 gpio_direction_output(BEAGLE_LED_USR0, 0); 74 gpio_set_value(BEAGLE_LED_USR0, state); 75 } 76 } 77 #endif 78 #ifdef STATUS_LED_BIT1 79 if (STATUS_LED_BIT1 & mask) { 80 if (!gpio_request(BEAGLE_LED_USR1, "")) { 81 gpio_direction_output(BEAGLE_LED_USR1, 0); 82 gpio_set_value(BEAGLE_LED_USR1, state); 83 } 84 } 85 #endif 86 } 87