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/*
* (C) 2011 Robert Jarzmik <robert.jarzmik@free.fr>
*
* 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.
*
*/
#include <clock.h>
#include <common.h>
#include <init.h>
#include <poweroff.h>
#include <gpio.h>
#include <poller.h>
#include "mioa701.h"
#define POWEROFF_SECS (4 * SECOND)
static void blink_led_keyboard(void)
{
gpio_set_value(GPIO115_LED_nKeyboard, 0);
mdelay(400);
gpio_set_value(GPIO115_LED_nKeyboard, 1);
mdelay(400);
}
static void try_poweroff(void)
{
int poweroff_released = 0;
blink_led_keyboard();
poweroff_released |= !gpio_get_value(GPIO0_KEY_POWER);
if (poweroff_released)
return;
gpio_set_value(GPIO115_LED_nKeyboard, 0);
mdelay(2000);
poweroff_machine();
}
static void gpio0_poller_fn(struct poller_struct *poller)
{
static uint64_t gpio0_start;
static bool gpio0_activated;
if (!gpio_get_value(GPIO0_KEY_POWER)) {
gpio0_activated = false;
return;
}
if (gpio0_activated) {
if (is_timeout_non_interruptible(gpio0_start, POWEROFF_SECS)) {
try_poweroff();
gpio0_activated = false;
}
} else {
gpio0_activated = true;
gpio0_start = get_time_ns();
}
}
static struct poller_struct gpio0_poller = {
.func = gpio0_poller_fn,
};
static int gpio0_poweroff_probe(void)
{
return poller_register(&gpio0_poller);
}
device_initcall(gpio0_poweroff_probe);
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