uisimulator/common/powermgmt-sim.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 by Heikki Hannikainen, Uwe Freese
  11  * Revisions copyright (C) 2005 by Gerald Van Baren
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19  * KIND, either express or implied.
  20  *
  21  ****************************************************************************/
  22 #include "config.h"
  23 #include "system.h"
  24 #include <time.h>
  25 #include "kernel.h"
  26 #include "powermgmt.h"
  27
  28 #define BATT_MINMVOLT   2500      /* minimum millivolts of battery */
  29 #define BATT_MAXMVOLT   4500      /* maximum millivolts of battery */
  30 #define BATT_MAXRUNTIME (10 * 60) /* maximum runtime with full battery in
  31                                      minutes */
  32
  33 extern void send_battery_level_event(void);
  34 extern int last_sent_battery_level;
  35 extern int battery_percent;
  36
  37 static unsigned int battery_millivolts = BATT_MAXMVOLT;
  38 /* estimated remaining time in minutes */
  39 static int powermgmt_est_runningtime_min = BATT_MAXRUNTIME;
  40
  41 static void battery_status_update(void)
  42 {
  43     static time_t last_change = 0;
  44     static bool charging = false;
  45     time_t now;
  46
  47     time(&now);
  48
  49     if (last_change < now) {
  50         last_change = now;
  51
  52         /* change the values: */
  53         if (charging) {
  54             if (battery_millivolts >= BATT_MAXMVOLT) {
  55                 /* Pretend the charger was disconnected */
  56                 charging = false;
  57                 queue_broadcast(SYS_CHARGER_DISCONNECTED, 0);
  58                 last_sent_battery_level = 100;
  59             }
  60         }
  61         else {
  62             if (battery_millivolts <= BATT_MINMVOLT) {
  63                 /* Pretend the charger was connected */
  64                 charging = true;
  65                 queue_broadcast(SYS_CHARGER_CONNECTED, 0);
  66                 last_sent_battery_level = 0;
  67             }
  68         }
  69
  70         if (charging) {
  71             battery_millivolts += (BATT_MAXMVOLT - BATT_MINMVOLT) / 50;
  72         }
  73         else {
  74             battery_millivolts -= (BATT_MAXMVOLT - BATT_MINMVOLT) / 100;
  75         }
  76
  77         battery_percent = 100 * (battery_millivolts - BATT_MINMVOLT) /
  78                             (BATT_MAXMVOLT - BATT_MINMVOLT);
  79
  80         powermgmt_est_runningtime_min =
  81             battery_percent * BATT_MAXRUNTIME / 100;
  82     }
  83
  84     send_battery_level_event();
  85 }
  86
  87 void battery_read_info(int *voltage, int *level)
  88 {
  89     battery_status_update();
  90
  91     if (voltage)
  92         *voltage = battery_millivolts;
  93
  94     if (level)
  95         *level = battery_percent;
  96 }
  97
  98 unsigned int battery_voltage(void)
  99 {
 100     battery_status_update();
 101     return battery_millivolts;
 102 }
 103
 104 int battery_level(void)
 105 {
 106     battery_status_update();
 107     return battery_percent;
 108 }
 109
 110 int battery_time(void)
 111 {
 112     battery_status_update();
 113     return powermgmt_est_runningtime_min;
 114 }
 115
 116 bool battery_level_safe(void)
 117 {
 118     return battery_level() >= 10;
 119 }
 120
 121 void set_battery_capacity(int capacity)
 122 {
 123   (void)capacity;
 124 }
 125
 126 #if BATTERY_TYPES_COUNT > 1
 127 void set_battery_type(int type)
 128 {
 129     (void)type;
 130 }
 131 #endif
 132
 133 #ifdef HAVE_ACCESSORY_SUPPLY
 134 void accessory_supply_set(bool enable)
 135 {
 136     (void)enable;
 137 }
 138 #endif
 139
 140 #ifdef HAVE_LINEOUT_POWEROFF
 141 void lineout_set(bool enable)
 142 {
 143     (void)enable;
 144 }
 145 #endif