/*
* @implemented
*/
BOOLEAN
NTAPI
HalQueryRealTimeClock(OUT PTIME_FIELDS Time)
{
/* FIXME: Acquire CMOS Lock */
/* Loop while update is in progress */
while ((HalpReadCmos(RTC_REGISTER_A)) & RTC_REG_A_UIP);
/* Set the time data */
Time->Second = BCD_INT(HalpReadCmos(0));
Time->Minute = BCD_INT(HalpReadCmos(2));
Time->Hour = BCD_INT(HalpReadCmos(4));
Time->Weekday = BCD_INT(HalpReadCmos(6));
Time->Day = BCD_INT(HalpReadCmos(7));
Time->Month = BCD_INT(HalpReadCmos(8));
Time->Year = BCD_INT(HalpReadCmos(9));
Time->Milliseconds = 0;
/* FIXME: Check century byte */
/* Compensate for the century field */
Time->Year += (Time->Year > 80) ? 1900: 2000;
/* FIXME: Release CMOS Lock */
/* Always return TRUE */
return TRUE;
}
ULONG
LlbHwRtcRead(VOID)
{
/* Issue the GET_TIME request on the RTC control register */
LlbHwOmap3TwlWrite1(0x4B, 0x29, 0x41);
/* Read the BCD registers and convert them */
LlbTime.Second = BCD_INT(LlbHwOmap3TwlRead1(0x4B, 0x1C));
LlbTime.Minute = BCD_INT(LlbHwOmap3TwlRead1(0x4B, 0x1D));
LlbTime.Hour = BCD_INT(LlbHwOmap3TwlRead1(0x4B, 0x1E));
LlbTime.Day = BCD_INT(LlbHwOmap3TwlRead1(0x4B, 0x1F));
LlbTime.Month = BCD_INT(LlbHwOmap3TwlRead1(0x4B, 0x20));
LlbTime.Year = BCD_INT(LlbHwOmap3TwlRead1(0x4B, 0x21));
LlbTime.Year += (LlbTime.Year > 80) ? 1900 : 2000;
return 0;
}
//==================
// Initialize RTC
//==================
void Init_RTC(uint32_t do_adj, uint8_t year, uint8_t month, uint8_t day,
uint8_t week, uint8_t hour, uint8_t minute, uint8_t second)
{
// Initialize I2C
if (I2CInit((uint32_t) I2CMASTER) == FALSE )
{
while (1); // Error Trap
}
// Initialize RTC
if (do_adj)
{
Wait_N_Ticks(100); // wait 1000ms
//
RTC_Write_Reg(RTC_CONTROL1, 0x20); // STOP
RTC_Write_Reg(RTC_CONTROL2, 0x00);
//
RTC_Write_Reg(RTC_HOURS, BCD_INT(hour));
RTC_Write_Reg(RTC_MINUTES, BCD_INT(minute));
RTC_Write_Reg(RTC_SECONDS, BCD_INT(second));
//
RTC_Write_Reg(RTC_YEARS, BCD_INT(year));
RTC_Write_Reg(RTC_C_MONTHS, BCD_INT(month));
RTC_Write_Reg(RTC_DAYS, BCD_INT(day));
RTC_Write_Reg(RTC_WEEKDAYS, BCD_INT(week));
//
RTC_Write_Reg(RTC_MINUTE_ALARM, 0x00);
RTC_Write_Reg(RTC_HOUR_ALARM, 0x00);
RTC_Write_Reg(RTC_DAY_ALARM, 0x00);
RTC_Write_Reg(RTC_WEEKDAY_ALARM, 0x00);
//
RTC_Write_Reg(RTC_CLKOUT_FREQ, 0x00);
RTC_Write_Reg(RTC_TIMER_CONTROL,0x00);
RTC_Write_Reg(RTC_TIMER, 0x00);
//
RTC_Write_Reg(RTC_CONTROL1, 0x00); // START
}
}
