firmware/target/arm/imx233/rtc-imx233.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2011 by Amaury Pouly
  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-imx233.h"
  22 #include "string.h"
  23
  24 static void imx233_rtc_write_reg(volatile uint32_t *reg, uint32_t val)
  25 {
  26     while(__XTRACT(HW_RTC_STAT, NEW_REGS) != 0);
  27     *reg = val;
  28     while(__XTRACT(HW_RTC_STAT, NEW_REGS) != 0);
  29 }
  30
  31 void imx233_rtc_write_seconds(uint32_t seconds)
  32 {
  33     imx233_rtc_write_reg(&HW_RTC_SECONDS, seconds);
  34 }
  35
  36 void imx233_rtc_write_persistent(int idx, uint32_t val)
  37 {
  38     imx233_rtc_write_reg(&HW_RTC_PERSISTENTx(idx), val);
  39 }
  40
  41 struct imx233_rtc_info_t imx233_rtc_get_info(void)
  42 {
  43     struct imx233_rtc_info_t info;
  44     memset(&info, 0, sizeof(info));
  45     info.seconds = HW_RTC_SECONDS;
  46     for(int i = 0; i < 6; i++)
  47         info.persistent[i] = HW_RTC_PERSISTENTx(i);
  48     return info;
  49 }