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s3c44b0: move rtc driver to drivers/rtc
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD
parent
50f601cca8
commit
5fe1377cc4
4 changed files with 104 additions and 77 deletions
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@ -143,80 +143,3 @@ int dcache_status (void)
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{
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return dcache_status();
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}
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/*
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RTC stuff
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*/
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#include <rtc.h>
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#ifndef BCD2HEX
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#define BCD2HEX(n) ((n>>4)*10+(n&0x0f))
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#endif
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#ifndef HEX2BCD
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#define HEX2BCD(x) ((((x) / 10) << 4) + (x) % 10)
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#endif
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int rtc_get (struct rtc_time* tm)
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{
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RTCCON |= 1;
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tm->tm_year = BCD2HEX(BCDYEAR);
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tm->tm_mon = BCD2HEX(BCDMON);
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tm->tm_wday = BCD2HEX(BCDDATE);
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tm->tm_mday = BCD2HEX(BCDDAY);
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tm->tm_hour = BCD2HEX(BCDHOUR);
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tm->tm_min = BCD2HEX(BCDMIN);
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tm->tm_sec = BCD2HEX(BCDSEC);
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if (tm->tm_sec==0) {
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/* we have to re-read the rtc data because of the "one second deviation" problem */
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/* see RTC datasheet for more info about it */
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tm->tm_year = BCD2HEX(BCDYEAR);
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tm->tm_mon = BCD2HEX(BCDMON);
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tm->tm_mday = BCD2HEX(BCDDAY);
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tm->tm_wday = BCD2HEX(BCDDATE);
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tm->tm_hour = BCD2HEX(BCDHOUR);
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tm->tm_min = BCD2HEX(BCDMIN);
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tm->tm_sec = BCD2HEX(BCDSEC);
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}
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RTCCON &= ~1;
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if(tm->tm_year >= 70)
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tm->tm_year += 1900;
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else
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tm->tm_year += 2000;
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return 0;
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}
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int rtc_set (struct rtc_time* tm)
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{
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if(tm->tm_year < 2000)
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tm->tm_year -= 1900;
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else
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tm->tm_year -= 2000;
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RTCCON |= 1;
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BCDYEAR = HEX2BCD(tm->tm_year);
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BCDMON = HEX2BCD(tm->tm_mon);
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BCDDAY = HEX2BCD(tm->tm_mday);
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BCDDATE = HEX2BCD(tm->tm_wday);
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BCDHOUR = HEX2BCD(tm->tm_hour);
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BCDMIN = HEX2BCD(tm->tm_min);
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BCDSEC = HEX2BCD(tm->tm_sec);
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RTCCON &= 1;
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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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RTCCON |= 1;
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BCDYEAR = 0;
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BCDMON = 0;
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BCDDAY = 0;
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BCDDATE = 0;
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BCDHOUR = 0;
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BCDMIN = 0;
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BCDSEC = 0;
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RTCCON &= 1;
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}
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@ -57,6 +57,7 @@ COBJS-$(CONFIG_RTC_PL031) += pl031.o
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COBJS-$(CONFIG_RTC_RS5C372A) += rs5c372.o
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COBJS-$(CONFIG_RTC_RX8025) += rx8025.o
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COBJS-$(CONFIG_RTC_S3C24X0) += s3c24x0_rtc.o
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COBJS-$(CONFIG_RTC_S3C44B0) += s3c44b0_rtc.o
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COBJS-$(CONFIG_RTC_X1205) += x1205.o
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COBJS := $(sort $(COBJS-y))
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102
drivers/rtc/s3c44b0_rtc.c
Normal file
102
drivers/rtc/s3c44b0_rtc.c
Normal file
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@ -0,0 +1,102 @@
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/*
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* (C) Copyright 2004
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* DAVE Srl
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* http://www.dave-tech.it
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* http://www.wawnet.biz
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* mailto:info@wawnet.biz
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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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* S3C44B0 CPU specific code
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*/
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#include <common.h>
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#include <command.h>
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#include <asm/hardware.h>
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#include <rtc.h>
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#include <bcd.h>
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int rtc_get (struct rtc_time* tm)
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{
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RTCCON |= 1;
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tm->tm_year = BCD2BIN(BCDYEAR);
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tm->tm_mon = BCD2BIN(BCDMON);
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tm->tm_wday = BCD2BIN(BCDDATE);
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tm->tm_mday = BCD2BIN(BCDDAY);
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tm->tm_hour = BCD2BIN(BCDHOUR);
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tm->tm_min = BCD2BIN(BCDMIN);
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tm->tm_sec = BCD2BIN(BCDSEC);
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if (tm->tm_sec==0) {
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/* we have to re-read the rtc data because of the "one second deviation" problem */
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/* see RTC datasheet for more info about it */
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tm->tm_year = BCD2BIN(BCDYEAR);
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tm->tm_mon = BCD2BIN(BCDMON);
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tm->tm_mday = BCD2BIN(BCDDAY);
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tm->tm_wday = BCD2BIN(BCDDATE);
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tm->tm_hour = BCD2BIN(BCDHOUR);
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tm->tm_min = BCD2BIN(BCDMIN);
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tm->tm_sec = BCD2BIN(BCDSEC);
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}
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RTCCON &= ~1;
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if(tm->tm_year >= 70)
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tm->tm_year += 1900;
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else
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tm->tm_year += 2000;
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return 0;
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}
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int rtc_set (struct rtc_time* tm)
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{
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if(tm->tm_year < 2000)
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tm->tm_year -= 1900;
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else
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tm->tm_year -= 2000;
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RTCCON |= 1;
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BCDYEAR = BIN2BCD(tm->tm_year);
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BCDMON = BIN2BCD(tm->tm_mon);
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BCDDAY = BIN2BCD(tm->tm_mday);
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BCDDATE = BIN2BCD(tm->tm_wday);
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BCDHOUR = BIN2BCD(tm->tm_hour);
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BCDMIN = BIN2BCD(tm->tm_min);
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BCDSEC = BIN2BCD(tm->tm_sec);
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RTCCON &= 1;
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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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RTCCON |= 1;
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BCDYEAR = 0;
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BCDMON = 0;
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BCDDAY = 0;
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BCDDATE = 0;
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BCDHOUR = 0;
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BCDMIN = 0;
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BCDSEC = 0;
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RTCCON &= 1;
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}
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@ -68,6 +68,7 @@
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#define CONFIG_SERIAL1 1 /* we use Serial line 1 */
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#define CONFIG_S3C44B0_I2C
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#define CONFIG_RTC_S3C44B0
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/* allow to overwrite serial and ethaddr */
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#define CONFIG_ENV_OVERWRITE
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