LXR uboot/board/ti/beagle/led.c

   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
  32void green_led_off(void)
  33{
  34        __led_set (STATUS_LED_GREEN, 0);
  35}
  36
  37void green_led_on(void)
  38{
  39        __led_set (STATUS_LED_GREEN, 1);
  40}
  41#endif
  42
  43void __led_init (led_id_t mask, int state)
  44{
  45        __led_set (mask, state);
  46}
  47
  48void __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
  68void __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