/* * (C) Copyright 2004 * DAVE Srl * http://www.dave-tech.it * http://www.wawnet.biz * mailto:info@wawnet.biz * * SPDX-License-Identifier: GPL-2.0+ */ /* * S3C44B0 CPU specific code */ #include <common.h> #include <command.h> #include <asm/hardware.h> #include <rtc.h> int rtc_get (struct rtc_time* tm) { RTCCON |= 1; tm->tm_year = bcd2bin(BCDYEAR); tm->tm_mon = bcd2bin(BCDMON); tm->tm_wday = bcd2bin(BCDDATE); tm->tm_mday = bcd2bin(BCDDAY); tm->tm_hour = bcd2bin(BCDHOUR); tm->tm_min = bcd2bin(BCDMIN); tm->tm_sec = bcd2bin(BCDSEC); if (tm->tm_sec==0) { /* we have to re-read the rtc data because of the "one second deviation" problem */ /* see RTC datasheet for more info about it */ tm->tm_year = bcd2bin(BCDYEAR); tm->tm_mon = bcd2bin(BCDMON); tm->tm_mday = bcd2bin(BCDDAY); tm->tm_wday = bcd2bin(BCDDATE); tm->tm_hour = bcd2bin(BCDHOUR); tm->tm_min = bcd2bin(BCDMIN); tm->tm_sec = bcd2bin(BCDSEC); } RTCCON &= ~1; if(tm->tm_year >= 70) tm->tm_year += 1900; else tm->tm_year += 2000; return 0; } int rtc_set (struct rtc_time* tm) { if(tm->tm_year < 2000) tm->tm_year -= 1900; else tm->tm_year -= 2000; RTCCON |= 1; BCDYEAR = bin2bcd(tm->tm_year); BCDMON = bin2bcd(tm->tm_mon); BCDDAY = bin2bcd(tm->tm_mday); BCDDATE = bin2bcd(tm->tm_wday); BCDHOUR = bin2bcd(tm->tm_hour); BCDMIN = bin2bcd(tm->tm_min); BCDSEC = bin2bcd(tm->tm_sec); RTCCON &= 1; return 0; } void rtc_reset (void) { RTCCON |= 1; BCDYEAR = 0; BCDMON = 0; BCDDAY = 0; BCDDATE = 0; BCDHOUR = 0; BCDMIN = 0; BCDSEC = 0; RTCCON &= 1; }