firmware/target/arm/as3525/sansa-clipv2/powermgmt-clipv2.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright © 2008 Rafaël Carré
  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
  24 /* The battery manufacturer's website shows discharge curves down to 3.0V,
  25    so 'dangerous' and 'shutoff' levels of 3.4V and 3.3V should be safe.
  26  */
  27 const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
  28 {
  29     3400
  30 };
  31
  32 const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
  33 {
  34     3300
  35 };
  36
  37 /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
  38 const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
  39 {
  40     { 3300, 3692, 3740, 3772, 3798, 3828, 3876, 3943, 4013, 4094, 4194 }
  41 };
  42
  43 #if CONFIG_CHARGING
  44 /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
  45 const unsigned short percent_to_volt_charge[11] =
  46 {
  47     /* TODO: simple linear uncalibrated curve */
  48     3300, 3390, 3480, 3570, 3660, 3750, 3840, 3930, 4020, 4110, 4200
  49 };
  50 #endif /* CONFIG_CHARGING */
  51