diff options
Diffstat (limited to 'rtc/s3c24x0_rtc.c')
| -rw-r--r-- | rtc/s3c24x0_rtc.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/rtc/s3c24x0_rtc.c b/rtc/s3c24x0_rtc.c deleted file mode 100644 index 7f8b4fa..0000000 --- a/rtc/s3c24x0_rtc.c +++ /dev/null @@ -1,178 +0,0 @@ -/* - * (C) Copyright 2003 - * David Müller ELSOFT AG Switzerland. d.mueller@elsoft.ch - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -/* - * Date & Time support for the built-in Samsung S3C24X0 RTC - */ - -#include <common.h> -#include <command.h> - -#if defined(CONFIG_RTC_S3C24X0) && (defined(CONFIG_CMD_DATE)) - -#if defined(CONFIG_S3C2400) -#include <s3c2400.h> -#elif defined(CONFIG_S3C2410) -#include <s3c2410.h> -#endif - -#include <rtc.h> - -/*#define DEBUG*/ - -typedef enum { - RTC_ENABLE, - RTC_DISABLE -} RTC_ACCESS; - - -static inline void SetRTC_Access(RTC_ACCESS a) -{ - S3C24X0_RTC * const rtc = S3C24X0_GetBase_RTC(); - switch (a) { - case RTC_ENABLE: - rtc->RTCCON |= 0x01; break; - - case RTC_DISABLE: - rtc->RTCCON &= ~0x01; break; - } -} - -static unsigned bcd2bin (uchar n) -{ - return ((((n >> 4) & 0x0F) * 10) + (n & 0x0F)); -} - -static unsigned char bin2bcd (unsigned int n) -{ - return (((n / 10) << 4) | (n % 10)); -} - -/* ------------------------------------------------------------------------- */ - -void rtc_get (struct rtc_time *tmp) -{ - S3C24X0_RTC * const rtc = S3C24X0_GetBase_RTC(); - uchar sec, min, hour, mday, wday, mon, year; - uchar a_sec,a_min, a_hour, a_date, a_mon, a_year, a_armed; - - /* enable access to RTC registers */ - SetRTC_Access(RTC_ENABLE); - - /* read RTC registers */ - do { - sec = rtc->BCDSEC; - min = rtc->BCDMIN; - hour = rtc->BCDHOUR; - mday = rtc->BCDDATE; - wday = rtc->BCDDAY; - mon = rtc->BCDMON; - year = rtc->BCDYEAR; - } while (sec != rtc->BCDSEC); - - /* read ALARM registers */ - a_sec = rtc->ALMSEC; - a_min = rtc->ALMMIN; - a_hour = rtc->ALMHOUR; - a_date = rtc->ALMDATE; - a_mon = rtc->ALMMON; - a_year = rtc->ALMYEAR; - a_armed = rtc->RTCALM; - - /* disable access to RTC registers */ - SetRTC_Access(RTC_DISABLE); - -#ifdef RTC_DEBUG - printf ( "Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x " - "hr: %02x min: %02x sec: %02x\n", - year, mon, mday, wday, - hour, min, sec); - printf ( "Alarms: %02x: year: %02x month: %02x date: %02x hour: %02x min: %02x sec: %02x\n", - a_armed, - a_year, a_mon, a_date, - a_hour, a_min, a_sec); -#endif - - tmp->tm_sec = bcd2bin(sec & 0x7F); - tmp->tm_min = bcd2bin(min & 0x7F); - tmp->tm_hour = bcd2bin(hour & 0x3F); - tmp->tm_mday = bcd2bin(mday & 0x3F); - tmp->tm_mon = bcd2bin(mon & 0x1F); - tmp->tm_year = bcd2bin(year); - tmp->tm_wday = bcd2bin(wday & 0x07); - if(tmp->tm_year<70) - tmp->tm_year+=2000; - else - tmp->tm_year+=1900; - tmp->tm_yday = 0; - tmp->tm_isdst= 0; -#ifdef RTC_DEBUG - printf ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", - tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday, - tmp->tm_hour, tmp->tm_min, tmp->tm_sec); -#endif -} - -void rtc_set (struct rtc_time *tmp) -{ - S3C24X0_RTC * const rtc = S3C24X0_GetBase_RTC(); - uchar sec, min, hour, mday, wday, mon, year; - -#ifdef RTC_DEBUG - printf ( "Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", - tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday, - tmp->tm_hour, tmp->tm_min, tmp->tm_sec); -#endif - year = bin2bcd(tmp->tm_year % 100); - mon = bin2bcd(tmp->tm_mon); - wday = bin2bcd(tmp->tm_wday); - mday = bin2bcd(tmp->tm_mday); - hour = bin2bcd(tmp->tm_hour); - min = bin2bcd(tmp->tm_min); - sec = bin2bcd(tmp->tm_sec); - - /* enable access to RTC registers */ - SetRTC_Access(RTC_ENABLE); - - /* write RTC registers */ - rtc->BCDSEC = sec; - rtc->BCDMIN = min; - rtc->BCDHOUR = hour; - rtc->BCDDATE = mday; - rtc->BCDDAY = wday; - rtc->BCDMON = mon; - rtc->BCDYEAR = year; - - /* disable access to RTC registers */ - SetRTC_Access(RTC_DISABLE); -} - -void rtc_reset (void) -{ - S3C24X0_RTC * const rtc = S3C24X0_GetBase_RTC(); - - rtc->RTCCON = (rtc->RTCCON & ~0x06) | 0x08; - rtc->RTCCON &= ~(0x08|0x01); -} - -#endif |