/*************************************************************************** * __________ __ ___. * 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 #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_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 #ifdef HAVE_LINEOUT_POWEROFF void lineout_set(bool enable) { (void)enable; } #endif