+++ /dev/null
-/*
- * (C) Copyright 2003
- *
- * 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 DS12887 RTC
- */
-
-#undef RTC_DEBUG
-
-#include <common.h>
-#include <command.h>
-#include <config.h>
-#include <rtc.h>
-
-#if defined(CONFIG_RTC_DS12887) && defined(CONFIG_CMD_DATE)
-
-#define RTC_SECONDS 0x00
-#define RTC_SECONDS_ALARM 0x01
-#define RTC_MINUTES 0x02
-#define RTC_MINUTES_ALARM 0x03
-#define RTC_HOURS 0x04
-#define RTC_HOURS_ALARM 0x05
-#define RTC_DAY_OF_WEEK 0x06
-#define RTC_DATE_OF_MONTH 0x07
-#define RTC_MONTH 0x08
-#define RTC_YEAR 0x09
-#define RTC_CONTROL_A 0x0A
-#define RTC_CONTROL_B 0x0B
-#define RTC_CONTROL_C 0x0C
-#define RTC_CONTROL_D 0x0D
-
-#define RTC_CA_UIP 0x80
-#define RTC_CB_DM 0x04
-#define RTC_CB_24_12 0x02
-#define RTC_CB_SET 0x80
-
-#if defined(CONFIG_ATC)
-
-static uchar rtc_read (uchar reg)
-{
- uchar val;
-
- *(volatile unsigned char*)(RTC_PORT_ADDR) = reg;
- __asm__ __volatile__ ("sync");
-
- val = *(volatile unsigned char*)(RTC_PORT_DATA);
- return (val);
-}
-
-static void rtc_write (uchar reg, uchar val)
-{
- *(volatile unsigned char*)(RTC_PORT_ADDR) = reg;
- __asm__ __volatile__ ("sync");
-
- *(volatile unsigned char*)(RTC_PORT_DATA) = val;
- __asm__ __volatile__ ("sync");
-}
-
-#else
-# error Board specific rtc access functions should be supplied
-#endif
-
-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)
-{
- uchar sec, min, hour, mday, wday, mon, year;
-
- /* check if rtc is available for access */
- while( rtc_read(RTC_CONTROL_A) & RTC_CA_UIP)
- ;
-
- sec = rtc_read(RTC_SECONDS);
- min = rtc_read(RTC_MINUTES);
- hour = rtc_read(RTC_HOURS);
- mday = rtc_read(RTC_DATE_OF_MONTH);
- wday = rtc_read(RTC_DAY_OF_WEEK);
- mon = rtc_read(RTC_MONTH);
- year = rtc_read(RTC_YEAR);
-
-#ifdef RTC_DEBUG
- printf( "Get RTC year: %d; mon: %d; mday: %d; wday: %d; "
- "hr: %d; min: %d; sec: %d\n",
- year, mon, mday, wday, hour, min, sec );
-
- printf ( "Alarms: hour: %02x min: %02x sec: %02x\n",
- rtc_read (RTC_HOURS_ALARM),
- rtc_read (RTC_MINUTES_ALARM),
- rtc_read (RTC_SECONDS_ALARM) );
-#endif
-
- if( !(rtc_read(RTC_CONTROL_B) & RTC_CB_DM))
- { /* Information is in BCD format */
-printf(" Get: Convert BSD to BIN\n");
- 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);
- }
-else
- {
- tmp->tm_sec = sec & 0x7F;
- tmp->tm_min = min & 0x7F;
- tmp->tm_hour = hour & 0x3F;
- tmp->tm_mday = mday & 0x3F;
- tmp->tm_mon = mon & 0x1F;
- tmp->tm_year = year;
- tmp->tm_wday = 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)
-{
- uchar save_ctrl_b;
- 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
-
- if( !(rtc_read(RTC_CONTROL_B) & RTC_CB_DM))
- { /* Information is in BCD format */
- 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);
- }
- else
- {
- year = tmp->tm_year % 100;
- mon = tmp->tm_mon;
- wday = tmp->tm_wday;
- mday = tmp->tm_mday;
- hour = tmp->tm_hour;
- min = tmp->tm_min;
- sec = tmp->tm_sec;
- }
-
- /* disables the RTC to update the regs */
- save_ctrl_b = rtc_read(RTC_CONTROL_B);
- save_ctrl_b |= RTC_CB_SET;
- rtc_write(RTC_CONTROL_B, save_ctrl_b);
-
- rtc_write (RTC_YEAR, year);
- rtc_write (RTC_MONTH, mon);
- rtc_write (RTC_DAY_OF_WEEK, wday);
- rtc_write (RTC_DATE_OF_MONTH, mday);
- rtc_write (RTC_HOURS, hour);
- rtc_write (RTC_MINUTES, min);
- rtc_write (RTC_SECONDS, sec);
-
- /* enables the RTC to update the regs */
- save_ctrl_b &= ~RTC_CB_SET;
- rtc_write(RTC_CONTROL_B, save_ctrl_b);
-}
-
-void rtc_reset (void)
-{
- struct rtc_time tmp;
- uchar ctrl_rg;
-
- ctrl_rg = RTC_CB_SET;
- rtc_write(RTC_CONTROL_B,ctrl_rg);
-
- tmp.tm_year = 1970 % 100;
- tmp.tm_mon = 1;
- tmp.tm_mday= 1;
- tmp.tm_hour = 0;
- tmp.tm_min = 0;
- tmp.tm_sec = 0;
-
-#ifdef RTC_DEBUG
- printf ( "RTC: %4d-%02d-%02d %2d:%02d:%02d UTC\n",
- tmp.tm_year, tmp.tm_mon, tmp.tm_mday,
- tmp.tm_hour, tmp.tm_min, tmp.tm_sec);
-#endif
-
- ctrl_rg = RTC_CB_SET | RTC_CB_24_12 | RTC_CB_DM;
- rtc_write(RTC_CONTROL_B,ctrl_rg);
- rtc_set(&tmp);
-
- rtc_write(RTC_HOURS_ALARM, 0),
- rtc_write(RTC_MINUTES_ALARM, 0),
- rtc_write(RTC_SECONDS_ALARM, 0);
-
- ctrl_rg = RTC_CB_24_12 | RTC_CB_DM;
- rtc_write(RTC_CONTROL_B,ctrl_rg);
-}
-
-#endif
projects / karo-tx-uboot.git / blobdiff