1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id: powermgmt-sim.c 29543 2011-03-08 19:33:30Z thomasjfox $
*
* 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 <sys/ioctl.h>
#include "kernel.h"
#include "powermgmt.h"
#include "power.h"
#include "file.h"
#include "ascodec-target.h"
#include "as3514.h"
#include "sc900776.h"
const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
{
3500
};
/* the OF shuts down at this voltage */
const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
{
3450
};
/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
/* FIXME: This is guessed. Make proper curve using battery_bench */
const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
{
{ 3450, 3692, 3740, 3772, 3798, 3828, 3876, 3943, 4013, 4094, 4194 }
};
#if CONFIG_CHARGING
/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
/* FIXME: This is guessed. Make proper curve using battery_bench */
const unsigned short const percent_to_volt_charge[11] =
{
3600, 3802, 3856, 3888, 3905, 3931, 3973, 4025, 4084, 4161, 4219
};
unsigned int power_input_status(void)
{
unsigned status = POWER_INPUT_NONE;
int fd = open("/dev/minivet", O_RDONLY);
if (fd >= 0)
{
if (ioctl(fd, IOCTL_MINIVET_DET_VBUS, NULL) > 0)
status = POWER_INPUT_MAIN_CHARGER;
close(fd);
}
return status;
}
#endif /* CONFIG_CHARGING */
/* Returns battery voltage from ADC [millivolts],
* adc returns voltage in 5mV steps */
unsigned int battery_adc_voltage(void)
{
return adc_read(3) * 5;
}
bool charging_state(void)
{
/* cannot make this static (initializer not constant error), but gcc
* seems to calculate at compile time anyway */
const unsigned short charged_thres =
((percent_to_volt_charge[9] + percent_to_volt_charge[10]) / 2);
bool ret = (power_input_status() == POWER_INPUT_MAIN_CHARGER);
/* dont indicate for > ~95% */
return ret && (battery_adc_voltage() <= charged_thres);
}
|
