board/ge/common/ge_common.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2017 General Electric Company
   4  */
   5
   6 #include <common.h>
   7 #include <i2c.h>
   8 #include <rtc.h>
   9
  10 void check_time(void)
  11 {
  12         int ret, i;
  13         struct rtc_time tm;
  14         u8 retry = 3;
  15
  16         unsigned int current_i2c_bus = i2c_get_bus_num();
  17
  18         ret = i2c_set_bus_num(CONFIG_SYS_RTC_BUS_NUM);
  19         if (ret < 0)
  20                 return;
  21
  22         rtc_init();
  23
  24         for (i = 0; i < retry; i++) {
  25                 ret = rtc_get(&tm);
  26                 if (!ret || ret == -EINVAL)
  27                         break;
  28         }
  29
  30         if (ret < 0)
  31                 env_set("rtc_status", "RTC_ERROR");
  32
  33         if (tm.tm_year > 2037) {
  34                 tm.tm_sec  = 0;
  35                 tm.tm_min  = 0;
  36                 tm.tm_hour = 0;
  37                 tm.tm_mday = 1;
  38                 tm.tm_wday = 2;
  39                 tm.tm_mon  = 1;
  40                 tm.tm_year = 2036;
  41
  42                 for (i = 0; i < retry; i++) {
  43                         ret = rtc_set(&tm);
  44                         if (!ret)
  45                                 break;
  46                 }
  47
  48                 if (ret < 0)
  49                         env_set("rtc_status", "RTC_ERROR");
  50         }
  51
  52         i2c_set_bus_num(current_i2c_bus);
  53 }
  54