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/*
* Copyright (C) 2010, 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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 <asm/io.h>
#include <asm/arch/ep93xx.h>
#include <config.h>
#include <status_led.h>
static uint8_t saved_state[2] = {STATUS_LED_OFF, STATUS_LED_OFF};
static uint32_t gpio_pin[2] = {1 << STATUS_LED_GREEN,
1 << STATUS_LED_RED};
inline void switch_LED_on(uint8_t led)
{
register struct gpio_regs *gpio = (struct gpio_regs *)GPIO_BASE;
writel(readl(&gpio->pedr) | gpio_pin[led], &gpio->pedr);
saved_state[led] = STATUS_LED_ON;
}
inline void switch_LED_off(uint8_t led)
{
register struct gpio_regs *gpio = (struct gpio_regs *)GPIO_BASE;
writel(readl(&gpio->pedr) & ~gpio_pin[led], &gpio->pedr);
saved_state[led] = STATUS_LED_OFF;
}
void red_led_on(void)
{
switch_LED_on(STATUS_LED_RED);
}
void red_led_off(void)
{
switch_LED_off(STATUS_LED_RED);
}
void green_led_on(void)
{
switch_LED_on(STATUS_LED_GREEN);
}
void green_led_off(void)
{
switch_LED_off(STATUS_LED_GREEN);
}
void __led_init(led_id_t mask, int state)
{
__led_set(mask, state);
}
void __led_toggle(led_id_t mask)
{
if (STATUS_LED_RED == mask) {
if (STATUS_LED_ON == saved_state[STATUS_LED_RED])
red_led_off();
else
red_led_on();
} else if (STATUS_LED_GREEN == mask) {
if (STATUS_LED_ON == saved_state[STATUS_LED_GREEN])
green_led_off();
else
green_led_on();
}
}
void __led_set(led_id_t mask, int state)
{
if (STATUS_LED_RED == mask) {
if (STATUS_LED_ON == state)
red_led_on();
else
red_led_off();
} else if (STATUS_LED_GREEN == mask) {
if (STATUS_LED_ON == state)
green_led_on();
else
green_led_off();
}
}
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