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https://github.com/AsahiLinux/u-boot
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ac67804fbb
This patch adds a unified s3c24x0 cpu header file that selects the header file for the specific s3c24x0 cpu from the SOC and CPU configs defined in board config file. This removes the current chain of s3c24-type #ifdef's from the s3c24x0 code. Signed-off-by: Kevin Morfitt <kevin.morfitt@fearnside-systems.co.uk> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
170 lines
4.4 KiB
C
170 lines
4.4 KiB
C
/*
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* (C) Copyright 2003
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* David Müller ELSOFT AG Switzerland. d.mueller@elsoft.ch
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Date & Time support for the built-in Samsung S3C24X0 RTC
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*/
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#include <common.h>
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#include <command.h>
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#if (defined(CONFIG_CMD_DATE))
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#include <asm/arch/s3c24x0_cpu.h>
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#include <rtc.h>
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#include <asm/io.h>
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/*#define DEBUG*/
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typedef enum {
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RTC_ENABLE,
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RTC_DISABLE
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} RTC_ACCESS;
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static inline void SetRTC_Access(RTC_ACCESS a)
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{
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struct s3c24x0_rtc *rtc = s3c24x0_get_base_rtc();
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switch (a) {
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case RTC_ENABLE:
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writeb(readb(&rtc->RTCCON) | 0x01, &rtc->RTCCON);
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break;
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case RTC_DISABLE:
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writeb(readb(&rtc->RTCCON) & ~0x01, &rtc->RTCCON);
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break;
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}
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}
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/* ------------------------------------------------------------------------- */
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int rtc_get(struct rtc_time *tmp)
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{
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struct s3c24x0_rtc *rtc = s3c24x0_get_base_rtc();
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uchar sec, min, hour, mday, wday, mon, year;
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uchar a_sec, a_min, a_hour, a_date, a_mon, a_year, a_armed;
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/* enable access to RTC registers */
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SetRTC_Access(RTC_ENABLE);
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/* read RTC registers */
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do {
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sec = readb(&rtc->BCDSEC);
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min = readb(&rtc->BCDMIN);
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hour = readb(&rtc->BCDHOUR);
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mday = readb(&rtc->BCDDATE);
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wday = readb(&rtc->BCDDAY);
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mon = readb(&rtc->BCDMON);
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year = readb(&rtc->BCDYEAR);
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} while (sec != readb(&rtc->BCDSEC));
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/* read ALARM registers */
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a_sec = readb(&rtc->ALMSEC);
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a_min = readb(&rtc->ALMMIN);
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a_hour = readb(&rtc->ALMHOUR);
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a_date = readb(&rtc->ALMDATE);
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a_mon = readb(&rtc->ALMMON);
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a_year = readb(&rtc->ALMYEAR);
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a_armed = readb(&rtc->RTCALM);
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/* disable access to RTC registers */
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SetRTC_Access(RTC_DISABLE);
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#ifdef RTC_DEBUG
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printf("Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
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"hr: %02x min: %02x sec: %02x\n",
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year, mon, mday, wday, hour, min, sec);
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printf("Alarms: %02x: year: %02x month: %02x date: %02x hour: "
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"%02x min: %02x sec: %02x\n",
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a_armed, a_year, a_mon, a_date, a_hour, a_min, a_sec);
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#endif
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tmp->tm_sec = bcd2bin(sec & 0x7F);
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tmp->tm_min = bcd2bin(min & 0x7F);
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tmp->tm_hour = bcd2bin(hour & 0x3F);
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tmp->tm_mday = bcd2bin(mday & 0x3F);
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tmp->tm_mon = bcd2bin(mon & 0x1F);
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tmp->tm_year = bcd2bin(year);
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tmp->tm_wday = bcd2bin(wday & 0x07);
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if (tmp->tm_year < 70)
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tmp->tm_year += 2000;
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else
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tmp->tm_year += 1900;
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tmp->tm_yday = 0;
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tmp->tm_isdst = 0;
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#ifdef RTC_DEBUG
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printf("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
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tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
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tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
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#endif
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return 0;
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}
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int rtc_set(struct rtc_time *tmp)
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{
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struct s3c24x0_rtc *rtc = s3c24x0_get_base_rtc();
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uchar sec, min, hour, mday, wday, mon, year;
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#ifdef RTC_DEBUG
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printf("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
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tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
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tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
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#endif
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year = bin2bcd(tmp->tm_year % 100);
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mon = bin2bcd(tmp->tm_mon);
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wday = bin2bcd(tmp->tm_wday);
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mday = bin2bcd(tmp->tm_mday);
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hour = bin2bcd(tmp->tm_hour);
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min = bin2bcd(tmp->tm_min);
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sec = bin2bcd(tmp->tm_sec);
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/* enable access to RTC registers */
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SetRTC_Access(RTC_ENABLE);
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/* write RTC registers */
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writeb(sec, &rtc->BCDSEC);
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writeb(min, &rtc->BCDMIN);
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writeb(hour, &rtc->BCDHOUR);
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writeb(mday, &rtc->BCDDATE);
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writeb(wday, &rtc->BCDDAY);
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writeb(mon, &rtc->BCDMON);
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writeb(year, &rtc->BCDYEAR);
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/* disable access to RTC registers */
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SetRTC_Access(RTC_DISABLE);
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return 0;
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}
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void rtc_reset(void)
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{
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struct s3c24x0_rtc *rtc = s3c24x0_get_base_rtc();
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writeb((readb(&rtc->RTCCON) & ~0x06) | 0x08, &rtc->RTCCON);
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writeb(readb(&rtc->RTCCON) & ~(0x08 | 0x01), &rtc->RTCCON);
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}
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#endif
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