1 /* 2 * Copyright (c) 2010 Texas Instruments, Inc. 3 * Jason Kridner <jkridner@beagleboard.org> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 #include <common.h> 8 #include <status_led.h> 9 #include <asm/arch/cpu.h> 10 #include <asm/io.h> 11 #include <asm/arch/sys_proto.h> 12 #include <asm/gpio.h> 13 14 /* GPIO pins for the LEDs */ 15 #define BEAGLE_LED_USR0 150 16 #define BEAGLE_LED_USR1 149 17 18 #ifdef STATUS_LED_GREEN 19 void green_led_off(void) 20 { 21 __led_set (STATUS_LED_GREEN, 0); 22 } 23 24 void green_led_on(void) 25 { 26 __led_set (STATUS_LED_GREEN, 1); 27 } 28 #endif 29 30 static int get_led_gpio(led_id_t mask) 31 { 32 #ifdef STATUS_LED_BIT 33 if (STATUS_LED_BIT & mask) 34 return BEAGLE_LED_USR0; 35 #endif 36 #ifdef STATUS_LED_BIT1 37 if (STATUS_LED_BIT1 & mask) 38 return BEAGLE_LED_USR1; 39 #endif 40 41 return 0; 42 } 43 44 void __led_init (led_id_t mask, int state) 45 { 46 int toggle_gpio; 47 48 toggle_gpio = get_led_gpio(mask); 49 50 if (toggle_gpio && !gpio_request(toggle_gpio, "led")) 51 __led_set(mask, state); 52 } 53 54 void __led_toggle (led_id_t mask) 55 { 56 int state, toggle_gpio; 57 58 toggle_gpio = get_led_gpio(mask); 59 if (toggle_gpio) { 60 state = gpio_get_value(toggle_gpio); 61 gpio_direction_output(toggle_gpio, !state); 62 } 63 } 64 65 void __led_set (led_id_t mask, int state) 66 { 67 int toggle_gpio; 68 69 toggle_gpio = get_led_gpio(mask); 70 if (toggle_gpio) 71 gpio_direction_output(toggle_gpio, state); 72 } 73