blob: c06f84670d9d014297c8dfd6fd935af4e35a573c (
plain)
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
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/***************************************************************************
* __________ __ ___.
* 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 "system.h"
#include <time.h>
#include "kernel.h"
#include "powermgmt.h"
#define BATT_MINMVOLT 2500 /* minimum millivolts of battery */
#define BATT_MAXMVOLT 4500 /* maximum millivolts of battery */
#define BATT_MAXRUNTIME (10 * 60) /* maximum runtime with full battery in
minutes */
extern void send_battery_level_event(void);
extern int last_sent_battery_level;
extern int battery_percent;
static unsigned int battery_millivolts = BATT_MAXMVOLT;
/* estimated remaining time in minutes */
static int powermgmt_est_runningtime_min = BATT_MAXRUNTIME;
static void battery_status_update(void)
{
static time_t last_change = 0;
static bool charging = false;
time_t now;
time(&now);
if (last_change < now) {
last_change = now;
/* change the values: */
if (charging) {
if (battery_millivolts >= BATT_MAXMVOLT) {
/* Pretend the charger was disconnected */
charging = false;
queue_broadcast(SYS_CHARGER_DISCONNECTED, 0);
last_sent_battery_level = 100;
}
}
else {
if (battery_millivolts <= BATT_MINMVOLT) {
/* Pretend the charger was connected */
charging = true;
queue_broadcast(SYS_CHARGER_CONNECTED, 0);
last_sent_battery_level = 0;
}
}
if (charging) {
battery_millivolts += (BATT_MAXMVOLT - BATT_MINMVOLT) / 50;
}
else {
battery_millivolts -= (BATT_MAXMVOLT - BATT_MINMVOLT) / 100;
}
battery_percent = 100 * (battery_millivolts - BATT_MINMVOLT) /
(BATT_MAXMVOLT - BATT_MINMVOLT);
powermgmt_est_runningtime_min =
battery_percent * BATT_MAXRUNTIME / 100;
}
send_battery_level_event();
}
void battery_read_info(int *voltage, int *level)
{
battery_status_update();
if (voltage)
*voltage = battery_millivolts;
if (level)
*level = battery_percent;
}
unsigned int battery_voltage(void)
{
battery_status_update();
return battery_millivolts;
}
int battery_level(void)
{
battery_status_update();
return battery_percent;
}
int battery_time(void)
{
battery_status_update();
return powermgmt_est_runningtime_min;
}
bool battery_level_safe(void)
{
return battery_level() >= 10;
}
void set_poweroff_timeout(int timeout)
{
(void)timeout;
}
void set_battery_capacity(int capacity)
{
(void)capacity;
}
#if BATTERY_TYPES_COUNT > 1
void set_battery_type(int type)
{
(void)type;
}
#endif
#ifdef HAVE_ACCESSORY_SUPPLY
void accessory_supply_set(bool enable)
{
(void)enable;
}
#endif
void reset_poweroff_timer(void)
{
}
void shutdown_hw(void)
{
}
void sys_poweroff(void)
{
}
void cancel_shutdown(void)
{
}
|
