u-boot/board/ti/beagle/led.c

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/*
* Copyright (c) 2010 Texas Instruments, Inc.
* Jason Kridner <jkridner@beagleboard.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <status_led.h>
#include <asm/arch/cpu.h>
#include <asm/io.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
/* GPIO pins for the LEDs */
#define BEAGLE_LED_USR0 150
#define BEAGLE_LED_USR1 149
#ifdef STATUS_LED_GREEN
void green_LED_off (void)
{
__led_set (STATUS_LED_GREEN, 0);
}
void green_LED_on (void)
{
__led_set (STATUS_LED_GREEN, 1);
}
#endif
void __led_init (led_id_t mask, int state)
{
__led_set (mask, state);
}
void __led_toggle (led_id_t mask)
{
int state, toggle_gpio = 0;
#ifdef STATUS_LED_BIT
if (!toggle_gpio && STATUS_LED_BIT & mask)
toggle_gpio = BEAGLE_LED_USR0;
#endif
#ifdef STATUS_LED_BIT1
if (!toggle_gpio && STATUS_LED_BIT1 & mask)
toggle_gpio = BEAGLE_LED_USR1;
#endif
if (toggle_gpio) {
if (!gpio_request(toggle_gpio, "")) {
gpio_direction_output(toggle_gpio, 0);
state = gpio_get_value(toggle_gpio);
gpio_set_value(toggle_gpio, !state);
}
}
}
void __led_set (led_id_t mask, int state)
{
#ifdef STATUS_LED_BIT
if (STATUS_LED_BIT & mask) {
if (!gpio_request(BEAGLE_LED_USR0, "")) {
gpio_direction_output(BEAGLE_LED_USR0, 0);
gpio_set_value(BEAGLE_LED_USR0, state);
}
}
#endif
#ifdef STATUS_LED_BIT1
if (STATUS_LED_BIT1 & mask) {
if (!gpio_request(BEAGLE_LED_USR1, "")) {
gpio_direction_output(BEAGLE_LED_USR1, 0);
gpio_set_value(BEAGLE_LED_USR1, state);
}
}
#endif
}