firmware/target/arm/as3525/sansa-c200v2/powermgmt-c200v2.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
  23 #include "config.h"
  24 #include "powermgmt.h"
  25
  26 const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
  27 {
  28     /*
  29      * about 10%, calibrated with C240v2 battery profile at
  30      * http://www.rockbox.org/wiki/bin/viewfile/Main/SansaRuntime?filename=c240v2_battery_bench_percent.png;rev=3
  31      */
  32     3600
  33 };
  34
  35 const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
  36 {
  37     3300
  38 };
  39
  40 /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
  41 const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
  42 {
  43     /*
  44      * Below table is calibrated according to
  45      * http://www.rockbox.org/wiki/bin/viewfile/Main/SansaRuntime?filename=c240v2_battery_bench_percent.png;rev=3
  46      * OF seems to stop charging at 4150mV, so that's 100% here.
  47      */
  48     { 3300, 3597, 3674, 3719, 3745, 3776, 3825, 3890, 3954, 4035, 4150 }
  49 };
  50
  51 /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
  52 const unsigned short percent_to_volt_charge[11] =
  53 {
  54     /* TODO: simple uncalibrated curve with 10% knee at 3.60V */
  55     3400, 3600, 3670, 3740, 3810, 3880, 3950, 4020, 4090, 4160, 4230
  56 };