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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2010 Marcin Bukat
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "cpu.h"
#include <stdbool.h>
#include "kernel.h"
#include "system.h"
#include "lcd.h"
#include "power.h"
#if CONFIG_TUNER
bool tuner_power(bool status)
{
if (status)
and_l(~(1<<17), &GPIO1_OUT);
else
or_l((1<<17), &GPIO1_OUT);
return status;
}
#endif /* #if CONFIG_TUNER */
void power_init(void)
{
/* GPIO53 has to be high - low resets device
* it is setup in crt0.S
*/
/* GPIO50 is ATA power (default OFF) */
or_l((1<<18), &GPIO1_OUT);
or_l((1<<18), &GPIO1_ENABLE);
or_l((1<<18), &GPIO1_FUNCTION);
/* GPIO49 is FM power (default OFF) */
or_l((1<<17), &GPIO1_OUT);
or_l((1<<17), &GPIO1_ENABLE);
or_l((1<<17), &GPIO1_FUNCTION);
/* GPIO46 is wall charger detect (input) */
and_l(~(1<<14), &GPIO1_ENABLE);
or_l((1<<14), &GPIO1_FUNCTION);
/* GPIO31 needs to be low */
and_l(~(1<<31), &GPIO_OUT);
or_l((1<<31),&GPIO_ENABLE);
or_l((1<<31),&GPIO_FUNCTION);
/* turn off charger by default*/
or_l((1<<23), &GPIO_OUT);
or_l((1<<23), &GPIO_ENABLE);
or_l((1<<23), &GPIO_FUNCTION);
/* high current charge mode */
or_l((1<<15), &GPIO_OUT);
or_l((1<<15),&GPIO_ENABLE);
or_l((1<<15),&GPIO_FUNCTION);
#ifndef BOOTLOADER
/* The boot loader controls the power */
ide_power_enable(true);
#endif
}
unsigned int power_input_status(void)
{
unsigned int status = POWER_INPUT_NONE;
/* GPIO46 is AC plug detect (low = AC plugged) */
if (!(GPIO1_READ & (1<<14)))
{
status |= POWER_INPUT_MAIN_CHARGER;
/* tristate GPIO23 to start charging cycle */
and_l(~(1<<23), &GPIO_ENABLE);
}
else
{
/* drive GPIO23 high to enter LTC1733 shutdown mode */
or_l((1<<23), &GPIO_ENABLE);
}
return status;
}
/* Returns true if the unit is charging the batteries. */
bool charging_state(void)
{
if (!(GPIO1_READ & (1<<14)))
return (GPIO_READ & (1<<30) )?false:true;
else
return false;
}
void ide_power_enable(bool on)
{
if (on)
and_l(~(1<<18),&GPIO1_OUT);
else
or_l((1<<18),&GPIO1_OUT);
}
bool ide_powered(void)
{
return (GPIO1_OUT & (1<<18))?false:true;
}
void power_off(void)
{
#ifdef HAVE_LCD_SHUTDOWN
lcd_shutdown();
#endif
set_irq_level(DISABLE_INTERRUPTS);
and_l(~(1<<21), &GPIO1_OUT); /* pull KEEPACT low */
asm("halt");
while(1);
}
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