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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Heikki Hannikainen, Uwe Freese
* Revisions copyright (C) 2005 by Gerald Van Baren
*
* 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 "adc.h"
#include "powermgmt.h"
#include "hwcompat.h"
/* FIXME: Properly calibrate values. Current values "inherited" from
* iriver H100 */
unsigned short battery_level_disksafe[BATTERY_TYPES_COUNT] =
{
3380
};
unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
{
3020
};
/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
{
{ 3370, 3650, 3700, 3740, 3780, 3820, 3870, 3930, 4000, 4080, 4160 }
};
#if CONFIG_CHARGING
/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
unsigned short percent_to_volt_charge[11] =
{
3540, 3860, 3930, 3980, 4000, 4020, 4040, 4080, 4130, 4180, 4230
};
#endif /* CONFIG_CHARGING */
#define BATTERY_SCALE_FACTOR_1G 4200
#define BATTERY_SCALE_FACTOR_2G 6630
/* full-scale ADC readout (2^8) in millivolt */
/* Returns battery voltage from ADC [millivolts] */
int _battery_voltage(void)
{
unsigned adcval = adc_read(ADC_UNREG_POWER);
if ((IPOD_HW_REVISION >> 16) != 2)
return (adcval * BATTERY_SCALE_FACTOR_1G) >> 8;
else
return (adcval * BATTERY_SCALE_FACTOR_2G) >> 8;
}
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