firmware/target/arm/ipod/powermgmt-ipod-pcf.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 #include "pcf5060x.h"
  27 #include "pcf50605.h"
  28
  29 const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
  30 {
  31 #ifdef IPOD_NANO
  32     3330
  33 #elif defined IPOD_VIDEO
  34     3300
  35 #else
  36     /* FIXME: calibrate value for other 3G+ ipods */
  37     3380
  38 #endif
  39 };
  40
  41 const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
  42 {
  43 #ifdef IPOD_NANO
  44     3230
  45 #elif defined IPOD_VIDEO
  46     3300
  47 #else
  48     /* FIXME: calibrate value for other 3G+ ipods */
  49     3020
  50 #endif
  51 };
  52
  53 /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
  54 const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
  55 {
  56 #ifdef IPOD_NANO
  57     /* measured values */
  58     { 3230, 3620, 3700, 3730, 3750, 3780, 3830, 3890, 3950, 4030, 4160 },
  59 #elif defined IPOD_VIDEO
  60     /* iPOD Video 30GB Li-Ion 400mAh, first approach based upon measurements */
  61     { 3450, 3670, 3710, 3750, 3790, 3830, 3870, 3930, 4010, 4100, 4180 },
  62 #elif defined IPOD_COLOR
  63     /* iPOD Color 60GB Li-Ion, first approach based upon measurements */
  64     { 3500, 3676, 3729, 3755, 3778, 3805, 3847, 3919, 3961, 4071, 4109 },
  65 #else
  66     /* FIXME: calibrate value for other 3G+ ipods */
  67     /* Table is "inherited" from iriver H100. */
  68     { 3370, 3650, 3700, 3740, 3780, 3820, 3870, 3930, 4000, 4080, 4160 }
  69 #endif
  70 };
  71
  72 #if CONFIG_CHARGING
  73 /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
  74 const unsigned short percent_to_volt_charge[11] =
  75 {
  76 #ifdef IPOD_NANO
  77     /* measured values */
  78     3230, 3620, 3700, 3730, 3750, 3780, 3830, 3890, 3950, 4030, 4160
  79 #elif defined IPOD_VIDEO
  80     /* iPOD Video 30GB Li-Ion 400mAh, first approach based upon measurements */
  81     3450, 3670, 3710, 3750, 3790, 3830, 3870, 3930, 4010, 4100, 4180
  82 #else
  83     /* FIXME: calibrate value for other 3G+ ipods */
  84     /* Table is "inherited" from iriver H100. */
  85     3540, 3860, 3930, 3980, 4000, 4020, 4040, 4080, 4130, 4180, 4230
  86 #endif
  87 };
  88 #endif /* CONFIG_CHARGING */
  89
  90 #define BATTERY_SCALE_FACTOR 6000
  91 /* full-scale ADC readout (2^10) in millivolt */
  92
  93 /* Returns battery voltage from ADC [millivolts] */
  94 unsigned int battery_adc_voltage(void)
  95 {
  96     return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10;
  97 }
  98
  99 #ifdef HAVE_ACCESSORY_SUPPLY
 100 void accessory_supply_set(bool enable)
 101 {
 102     if (enable)
 103     {
 104         /* Accessory voltage supply */
 105         pcf50605_write(PCF5060X_D2REGC1, 0xf8); /* 3.3V ON */
 106     }
 107     else
 108     {
 109         /* Accessory voltage supply */
 110         pcf50605_write(PCF5060X_D2REGC1, 0x18); /* OFF */
 111     }
 112
 113 }
 114 #endif