firmware/target/arm/iriver/h10/powermgmt-h10.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 "adc.h"
  25 #include "powermgmt.h"
  26
  27 const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
  28 {
  29 #if   defined(IRIVER_H10)
  30     3733
  31 #elif defined(IRIVER_H10_5GB)
  32     3700
  33 #endif
  34 };
  35
  36 const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
  37 {
  38 #if   defined(IRIVER_H10)
  39     3627
  40 #elif defined(IRIVER_H10_5GB)
  41     3600
  42 #endif
  43 };
  44
  45 /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
  46 const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
  47 {
  48 #if   defined(IRIVER_H10)
  49     { 3733, 3772, 3821, 3840, 3869, 3917, 3985, 4034, 4072, 4140, 4198 }
  50 #elif defined(IRIVER_H10_5GB)
  51     { 3700, 3800, 3850, 3880, 3910, 3960, 4000, 4070, 4120, 4210, 4280 }
  52 #endif
  53 };
  54
  55 /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
  56 const unsigned short percent_to_volt_charge[11] =
  57 {
  58 #if   defined(IRIVER_H10)
  59     3956, 3995, 4024, 4043, 4063, 4082, 4111, 4140, 4179, 4218, 4266
  60 #elif defined(IRIVER_H10_5GB)
  61     /* TODO: Not yet calibrated */
  62     3700, 3800, 3850, 3880, 3910, 3960, 4000, 4070, 4120, 4210, 4280
  63 #endif
  64 };
  65
  66 #define BATTERY_SCALE_FACTOR 4650
  67 /* full-scale ADC readout (2^10) in millivolt */
  68
  69 /* Returns battery voltage from ADC [millivolts] */
  70 unsigned int battery_adc_voltage(void)
  71 {
  72     return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10;
  73 }