diff options
| -rw-r--r-- | cpu/s3c44b0/cpu.c | 77 | ||||
| -rw-r--r-- | drivers/rtc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/rtc/s3c44b0_rtc.c | 102 | ||||
| -rw-r--r-- | include/configs/B2.h | 1 |
4 files changed, 104 insertions, 77 deletions
diff --git a/cpu/s3c44b0/cpu.c b/cpu/s3c44b0/cpu.c index 0c44691..752191dc 100644 --- a/cpu/s3c44b0/cpu.c +++ b/cpu/s3c44b0/cpu.c @@ -143,80 +143,3 @@ int dcache_status (void) { return dcache_status(); } - -/* - RTC stuff -*/ -#include <rtc.h> -#ifndef BCD2HEX - #define BCD2HEX(n) ((n>>4)*10+(n&0x0f)) -#endif -#ifndef HEX2BCD - #define HEX2BCD(x) ((((x) / 10) << 4) + (x) % 10) -#endif - -int rtc_get (struct rtc_time* tm) -{ - RTCCON |= 1; - tm->tm_year = BCD2HEX(BCDYEAR); - tm->tm_mon = BCD2HEX(BCDMON); - tm->tm_wday = BCD2HEX(BCDDATE); - tm->tm_mday = BCD2HEX(BCDDAY); - tm->tm_hour = BCD2HEX(BCDHOUR); - tm->tm_min = BCD2HEX(BCDMIN); - tm->tm_sec = BCD2HEX(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 = BCD2HEX(BCDYEAR); - tm->tm_mon = BCD2HEX(BCDMON); - tm->tm_mday = BCD2HEX(BCDDAY); - tm->tm_wday = BCD2HEX(BCDDATE); - tm->tm_hour = BCD2HEX(BCDHOUR); - tm->tm_min = BCD2HEX(BCDMIN); - tm->tm_sec = BCD2HEX(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 = HEX2BCD(tm->tm_year); - BCDMON = HEX2BCD(tm->tm_mon); - BCDDAY = HEX2BCD(tm->tm_mday); - BCDDATE = HEX2BCD(tm->tm_wday); - BCDHOUR = HEX2BCD(tm->tm_hour); - BCDMIN = HEX2BCD(tm->tm_min); - BCDSEC = HEX2BCD(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; -} diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index 94bc518..3831dd9 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -57,6 +57,7 @@ COBJS-$(CONFIG_RTC_PL031) += pl031.o COBJS-$(CONFIG_RTC_RS5C372A) += rs5c372.o COBJS-$(CONFIG_RTC_RX8025) += rx8025.o COBJS-$(CONFIG_RTC_S3C24X0) += s3c24x0_rtc.o +COBJS-$(CONFIG_RTC_S3C44B0) += s3c44b0_rtc.o COBJS-$(CONFIG_RTC_X1205) += x1205.o COBJS := $(sort $(COBJS-y)) diff --git a/drivers/rtc/s3c44b0_rtc.c b/drivers/rtc/s3c44b0_rtc.c new file mode 100644 index 0000000..489536f --- /dev/null +++ b/drivers/rtc/s3c44b0_rtc.c @@ -0,0 +1,102 @@ +/* + * (C) Copyright 2004 + * DAVE Srl + * http://www.dave-tech.it + * http://www.wawnet.biz + * mailto:info@wawnet.biz + * + * 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 + */ + +/* + * S3C44B0 CPU specific code + */ + +#include <common.h> +#include <command.h> +#include <asm/hardware.h> +#include <rtc.h> +#include <bcd.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; +} + diff --git a/include/configs/B2.h b/include/configs/B2.h index d9f6e14..9340db6 100644 --- a/include/configs/B2.h +++ b/include/configs/B2.h @@ -68,6 +68,7 @@ #define CONFIG_SERIAL1 1 /* we use Serial line 1 */ #define CONFIG_S3C44B0_I2C +#define CONFIG_RTC_S3C44B0 /* allow to overwrite serial and ethaddr */ #define CONFIG_ENV_OVERWRITE |