arch/all-pc/battclock/battclock_init.c

   1 #include <aros/debug.h>
   2 #include <aros/symbolsets.h>
   3 #include <resources/acpi.h>
   4 #include <proto/acpi.h>
   5 #include <proto/exec.h>
   6
   7 #include "battclock_intern.h"
   8 #include "cmos.h"
   9
  10 /* auto init */
  11 static int BattClock_Init(struct BattClockBase *BattClockBase)
  12 {
  13     APTR ACPIBase;
  14
  15     InitSemaphore(&BattClockBase->sem);
  16     BattClockBase->century = CENTURY;   /* Default offset */
  17
  18     ACPIBase = OpenResource("acpi.resource");
  19     if (ACPIBase)
  20     {
  21         struct ACPI_TABLE_TYPE_FADT *fadt = ACPI_FindSDT(ACPI_MAKE_ID('F','A','C','P'));
  22
  23         if (fadt && (fadt->header.length >= offsetof(struct ACPI_TABLE_TYPE_FADT, century)) &&
  24             fadt->century)
  25         {
  26             D(bug("[BattClock] Got RTC century offset 0x%02X from ACPI\n", fadt->century));
  27             BattClockBase->century = fadt->century;
  28         }
  29     }
  30
  31     return 1;
  32 }
  33
  34 ADD2INITLIB(BattClock_Init, 0)