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/arch/gpio.h> 26 27 static unsigned int saved_state[2] = {STATUS_LED_OFF, STATUS_LED_OFF}; 28 29 /* GPIO pins for the LEDs */ 30 #define BEAGLE_LED_USR0 149 31 #define BEAGLE_LED_USR1 150 32 33 #ifdef STATUS_LED_GREEN 34 void green_LED_off (void) 35 { 36 __led_set (STATUS_LED_GREEN, 0); 37 } 38 39 void green_LED_on (void) 40 { 41 __led_set (STATUS_LED_GREEN, 1); 42 } 43 #endif 44 45 void __led_init (led_id_t mask, int state) 46 { 47 __led_set (mask, state); 48 } 49 50 void __led_toggle (led_id_t mask) 51 { 52 #ifdef STATUS_LED_BIT 53 if (STATUS_LED_BIT & mask) { 54 if (STATUS_LED_ON == saved_state[0]) 55 __led_set(STATUS_LED_BIT, 0); 56 else 57 __led_set(STATUS_LED_BIT, 1); 58 } 59 #endif 60 #ifdef STATUS_LED_BIT1 61 if (STATUS_LED_BIT1 & mask) { 62 if (STATUS_LED_ON == saved_state[1]) 63 __led_set(STATUS_LED_BIT1, 0); 64 else 65 __led_set(STATUS_LED_BIT1, 1); 66 } 67 #endif 68 } 69 70 void __led_set (led_id_t mask, int state) 71 { 72 #ifdef STATUS_LED_BIT 73 if (STATUS_LED_BIT & mask) { 74 if (!omap_request_gpio(BEAGLE_LED_USR0)) { 75 omap_set_gpio_direction(BEAGLE_LED_USR0, 0); 76 omap_set_gpio_dataout(BEAGLE_LED_USR0, state); 77 } 78 saved_state[0] = state; 79 } 80 #endif 81 #ifdef STATUS_LED_BIT1 82 if (STATUS_LED_BIT1 & mask) { 83 if (!omap_request_gpio(BEAGLE_LED_USR1)) { 84 omap_set_gpio_direction(BEAGLE_LED_USR1, 0); 85 omap_set_gpio_dataout(BEAGLE_LED_USR1, state); 86 } 87 saved_state[1] = state; 88 } 89 #endif 90 } 91