diag/diag_rtc.c

   1
   2 #include <common.h>
   3
   4 #include "diag.h"
   5
   6 int rtc_test(void)
   7 {
   8         int hour1, minute1, second1;
   9         int hour2, minute2, second2;
  10         int ret_val = 0;
  11
  12         printf("\tRTC test ");
  13
  14         diag_get_rtc_time(&hour1, &minute1, &second1);
  15
  16         /* FIXME: Observation says RTC requires additional udelay(1) to
  17          * read proper value
  18          */
  19         udelay(1000000);
  20
  21         /* Set a time that changes all the digits after a second */
  22         diag_set_rtc_time(9, 59, 59);
  23
  24         /* Wait for 1 second */
  25         /* Observation says RTC takes additional one second when new time is set */
  26         udelay(2000000);
  27
  28         diag_get_rtc_time(&hour2, &minute2, &second2);
  29
  30         if(hour2   != 10 ||
  31            minute2 != 0  ||
  32            second2 >  1)
  33         {
  34                 /* Second should be 0 or max 1 (if error in udealy), not > 1 */
  35
  36                 printf("FAILED\n");
  37                 printf("\t\tGot:      hour %02d minute %02d second %02d\n", hour2, minute2, second2);
  38                 printf("\t\tExpected: hour 10 minute 00 second 00\n");
  39                 ret_val = 1;
  40         }
  41         else
  42         {
  43                 printf("\t\t\t\t\t PASSED\n");
  44         }
  45
  46         /* As incrementing a second here will require complex calculation,
  47          * we will ignore that passed second */
  48         diag_set_rtc_time(hour1, minute1, second1);
  49
  50         return ret_val;
  51 }