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 <env.h>
   8 #include <i2c.h>
   9 #include <rtc.h>
  10
  11 void check_time(void)
  12 {
  13         int ret, i;
  14         struct rtc_time tm;
  15         u8 retry = 3;
  16
  17         unsigned int current_i2c_bus = i2c_get_bus_num();
  18
  19         ret = i2c_set_bus_num(CONFIG_SYS_RTC_BUS_NUM);
  20         if (ret < 0)
  21                 return;
  22
  23         rtc_init();
  24
  25         for (i = 0; i < retry; i++) {
  26                 ret = rtc_get(&tm);
  27                 if (!ret || ret == -EINVAL)
  28                         break;
  29         }
  30
  31         if (ret < 0)
  32                 env_set("rtc_status", "RTC_ERROR");
  33
  34         if (tm.tm_year > 2037) {
  35                 tm.tm_sec  = 0;
  36                 tm.tm_min  = 0;
  37                 tm.tm_hour = 0;
  38                 tm.tm_mday = 1;
  39                 tm.tm_wday = 2;
  40                 tm.tm_mon  = 1;
  41                 tm.tm_year = 2036;
  42
  43                 for (i = 0; i < retry; i++) {
  44                         ret = rtc_set(&tm);
  45                         if (!ret)
  46                                 break;
  47                 }
  48
  49                 if (ret < 0)
  50                         env_set("rtc_status", "RTC_ERROR");
  51         }
  52
  53         i2c_set_bus_num(current_i2c_bus);
  54 }
  55