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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 by Karl Kurbjun
*
* 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 "kernel.h"
#include "power-target.h"
#include "pcf50606.h"
#include "pcf50635.h"
unsigned short current_voltage = 3910;
const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
{
3380
};
const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
{
3300
};
/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
{
/* Standard D2 internal battery */
{ 3370, 3690, 3750, 3775, 3790, 3820, 3880, 3940, 3980, 4090, 4170 }
/* TODO: DIY replacements eg. Nokia BP-4L ? */
};
#if CONFIG_CHARGING
/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
const unsigned short percent_to_volt_charge[11] =
{
/* FIXME: voltages seem to be offset during charging (eg. 4500+) */
3370, 3690, 3750, 3775, 3790, 3820, 3880, 3940, 3980, 4090, 4170
};
#endif /* CONFIG_CHARGING */
#define BATTERY_SCALE_FACTOR 6000
/* full-scale ADC readout (2^10) in millivolt */
/* Returns battery voltage from ADC [millivolts] */
unsigned int battery_adc_voltage(void)
{
static unsigned last_tick = 0;
if (TIME_BEFORE(last_tick+HZ, current_tick))
{
short adc_val;
if (get_pmu_type() == PCF50606)
pcf50606_read_adc(PCF5060X_ADC_BATVOLT_RES, &adc_val, NULL);
else
pcf50635_read_adc(PCF5063X_ADCC1_MUX_BATSNS_RES, &adc_val, NULL);
current_voltage = (adc_val * BATTERY_SCALE_FACTOR) >> 10;
last_tick = current_tick;
}
return current_voltage;
}
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