firmware/drivers/rtc/rtc_d2.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 by Rob Purchase
  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 #include "rtc.h"
  22 #include "system.h"
  23 #include "pcf50606.h"
  24 #include "pcf50635.h"
  25 #include "power-target.h"
  26
  27 void rtc_init(void)
  28 {
  29 }
  30
  31 int rtc_read_datetime(struct tm *tm)
  32 {
  33     unsigned int i;
  34     int rc, oldlevel;
  35     unsigned char buf[7];
  36
  37     oldlevel = disable_irq_save();
  38
  39     if (get_pmu_type() == PCF50606)
  40         rc = pcf50606_read_multiple(PCF5060X_RTCSC, buf, sizeof(buf));
  41     else
  42         rc = pcf50635_read_multiple(PCF5063X_REG_RTCSC, buf, sizeof(buf));
  43
  44     restore_irq(oldlevel);
  45
  46     for (i = 0; i < sizeof(buf); i++)
  47         buf[i] = BCD2DEC(buf[i]);
  48
  49     tm->tm_sec = buf[0];
  50     tm->tm_min = buf[1];
  51     tm->tm_hour = buf[2];
  52     tm->tm_wday = buf[3];
  53     tm->tm_mday = buf[4];
  54     tm->tm_mon = buf[5] - 1;
  55     tm->tm_year = buf[6] + 100;
  56
  57     return rc;
  58 }
  59
  60 int rtc_write_datetime(const struct tm *tm)
  61 {
  62     unsigned int i;
  63     int rc, oldlevel;
  64     unsigned char buf[7];
  65
  66     buf[0] = tm->tm_sec;
  67     buf[1] = tm->tm_min;
  68     buf[2] = tm->tm_hour;
  69     buf[3] = tm->tm_wday;
  70     buf[4] = tm->tm_mday;
  71     buf[5] = tm->tm_mon + 1;
  72     buf[6] = tm->tm_year - 100;
  73
  74     for (i = 0; i < sizeof(buf); i++)
  75          buf[i] = DEC2BCD(buf[i]);
  76
  77     oldlevel = disable_irq_save();
  78
  79     if (get_pmu_type() == PCF50606)
  80         rc = pcf50606_write_multiple(PCF5060X_RTCSC, buf, sizeof(buf));
  81     else
  82         rc = pcf50635_write_multiple(PCF5063X_REG_RTCSC, buf, sizeof(buf));
  83
  84     restore_irq(oldlevel);
  85
  86     return rc;
  87 }