firmware/target/arm/tcc77x/powermgmt-tcc77x.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 by Karl Kurbjun
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include "config.h"
  23 #include "adc.h"
  24 #include "powermgmt.h"
  25 #include "kernel.h"
  26 #include "pcf50606.h"
  27
  28 unsigned short current_voltage = 3910;
  29
  30 const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
  31 {
  32     /* FIXME: calibrate value */
  33     3380
  34 };
  35
  36 const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
  37 {
  38     /* FIXME: calibrate value */
  39     3300
  40 };
  41
  42 /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
  43 const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
  44 {
  45     /* FIXME: calibrate values. Table is "inherited" from iPod-PCF / H100 */
  46     { 3370, 3650, 3700, 3740, 3780, 3820, 3870, 3930, 4000, 4080, 4160 }
  47 };
  48
  49 #if CONFIG_CHARGING
  50 /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
  51 const unsigned short percent_to_volt_charge[11] =
  52 {
  53     /* FIXME: calibrate values. Table is "inherited" from iPod-PCF / H100 */
  54     3370, 3650, 3700, 3740, 3780, 3820, 3870, 3930, 4000, 4080, 4160
  55 };
  56 #endif /* CONFIG_CHARGING */
  57
  58 #define BATTERY_SCALE_FACTOR 6000
  59 /* full-scale ADC readout (2^10) in millivolt */
  60
  61 /* Returns battery voltage from ADC [millivolts] */
  62 unsigned int battery_adc_voltage(void)
  63 {
  64     return current_voltage;
  65 }
  66