drivers/rtc/mpc8xx.c

   1 /*
   2  * (C) Copyright 2001
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /*
  25  * Date & Time support for internal RTC of MPC8xx
  26  */
  27
  28 /*#define       DEBUG*/
  29
  30 #include <common.h>
  31 #include <command.h>
  32 #include <rtc.h>
  33
  34 #if defined(CONFIG_CMD_DATE)
  35
  36 /* ------------------------------------------------------------------------- */
  37
  38 int rtc_get (struct rtc_time *tmp)
  39 {
  40         volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
  41         ulong tim;
  42
  43         tim = immr->im_sit.sit_rtc;
  44
  45         to_tm (tim, tmp);
  46
  47         debug ( "Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
  48                 tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
  49                 tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
  50
  51         return 0;
  52 }
  53
  54 int rtc_set (struct rtc_time *tmp)
  55 {
  56         volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
  57         ulong tim;
  58
  59         debug ( "Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
  60                 tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
  61                 tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
  62
  63         tim = mktime (tmp->tm_year, tmp->tm_mon, tmp->tm_mday,
  64                       tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
  65
  66         immr->im_sitk.sitk_rtck = KAPWR_KEY;
  67         immr->im_sit.sit_rtc = tim;
  68
  69         return 0;
  70 }
  71
  72 void rtc_reset (void)
  73 {
  74         return; /* nothing to do */
  75 }
  76
  77 #endif