+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2002
* Andrew May, Viasat Inc, amay@viasat.com
- *
- * 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
*/
/*
is what should be done.
#define CONFIG_RTC_M41T11 1
-#define CFG_I2C_RTC_ADDR 0x68
+#define CONFIG_SYS_I2C_RTC_ADDR 0x68
#if 0
-#define CFG_M41T11_EXT_CENTURY_DATA
+#define CONFIG_SYS_M41T11_EXT_CENTURY_DATA
#else
-#define CFG_M41T11_BASE_YEAR 2000
+#define CONFIG_SYS_M41T11_BASE_YEAR 2000
#endif
*/
-#if defined(CONFIG_RTC_M41T11) && defined(CFG_I2C_RTC_ADDR) && defined(CONFIG_CMD_DATE)
-
-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));
-}
-
-
/* ------------------------------------------------------------------------- */
/*
these are simple defines for the chip local to here so they aren't too
#define RTC_CONTROL_ADDR 0x7
-#ifndef CFG_M41T11_EXT_CENTURY_DATA
+#ifndef CONFIG_SYS_M41T11_EXT_CENTURY_DATA
#define REG_CNT (RTC_REG_CNT+1)
you only get 00-99 for the year we will asume you
want from the year 2000 if you don't set the config
*/
-#ifndef CFG_M41T11_BASE_YEAR
-#define CFG_M41T11_BASE_YEAR 2000
+#ifndef CONFIG_SYS_M41T11_BASE_YEAR
+#define CONFIG_SYS_M41T11_BASE_YEAR 2000
#endif
#else
int rel = 0;
uchar data[RTC_REG_CNT];
- i2c_read(CFG_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, data, RTC_REG_CNT);
+ i2c_read(CONFIG_SYS_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, data, RTC_REG_CNT);
if( data[RTC_SEC_ADDR] & 0x80 ){
printf( "m41t11 RTC Clock stopped!!!\n" );
tmp->tm_hour = bcd2bin (data[RTC_HOUR_ADDR] & 0x3F);
tmp->tm_mday = bcd2bin (data[RTC_DATE_ADDR] & 0x3F);
tmp->tm_mon = bcd2bin (data[RTC_MONTH_ADDR]& 0x1F);
-#ifndef CFG_M41T11_EXT_CENTURY_DATA
- tmp->tm_year = CFG_M41T11_BASE_YEAR
+#ifndef CONFIG_SYS_M41T11_EXT_CENTURY_DATA
+ tmp->tm_year = CONFIG_SYS_M41T11_BASE_YEAR
+ bcd2bin(data[RTC_YEARS_ADDR])
+ ((data[RTC_HOUR_ADDR]&0x40) ? 100 : 0);
#else
{
unsigned char cent;
- i2c_read(CFG_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE);
+ i2c_read(CONFIG_SYS_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE);
if( !(data[RTC_HOUR_ADDR] & 0x80) ){
printf( "m41t11 RTC: cann't keep track of years without CEB set\n" );
rel = -1;
if( (cent & 0x1) != ((data[RTC_HOUR_ADDR]&0x40)>>7) ){
/*century flip store off new year*/
cent += 1;
- i2c_write(CFG_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE);
+ i2c_write(CONFIG_SYS_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE);
}
tmp->tm_year =((int)cent*100)+bcd2bin(data[RTC_YEARS_ADDR]);
}
return rel;
}
-void rtc_set (struct rtc_time *tmp)
+int rtc_set (struct rtc_time *tmp)
{
uchar data[RTC_REG_CNT];
data[RTC_HOUR_ADDR] |= 0x80;/*we will always use CEB*/
data[RTC_YEARS_ADDR] = bin2bcd(tmp->tm_year%100);/*same thing either way*/
-#ifndef CFG_M41T11_EXT_CENTURY_DATA
- if( ((tmp->tm_year - CFG_M41T11_BASE_YEAR) > 200) ||
- (tmp->tm_year < CFG_M41T11_BASE_YEAR) ){
+#ifndef CONFIG_SYS_M41T11_EXT_CENTURY_DATA
+ if( ((tmp->tm_year - CONFIG_SYS_M41T11_BASE_YEAR) > 200) ||
+ (tmp->tm_year < CONFIG_SYS_M41T11_BASE_YEAR) ){
printf( "m41t11 RTC setting year out of range!!need recompile\n" );
}
- data[RTC_HOUR_ADDR] |= (tmp->tm_year - CFG_M41T11_BASE_YEAR) > 100 ? 0x40 : 0;
+ data[RTC_HOUR_ADDR] |= (tmp->tm_year - CONFIG_SYS_M41T11_BASE_YEAR) > 100 ? 0x40 : 0;
#else
{
unsigned char cent;
cent = tmp->tm_year ? tmp->tm_year / 100 : 0;
data[RTC_HOUR_ADDR] |= (cent & 0x1) ? 0x40 : 0;
- i2c_write(CFG_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE);
+ i2c_write(CONFIG_SYS_I2C_RTC_ADDR, M41T11_YEAR_DATA, 1, ¢, M41T11_YEAR_SIZE);
}
#endif
- i2c_write(CFG_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, data, RTC_REG_CNT);
+ i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, data, RTC_REG_CNT);
+
+ return 0;
}
void rtc_reset (void)
{
unsigned char val;
/* clear all control & status registers */
- i2c_read(CFG_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, &val, 1);
+ i2c_read(CONFIG_SYS_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, &val, 1);
val = val & 0x7F;/*make sure we are running*/
- i2c_write(CFG_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, &val, RTC_REG_CNT);
+ i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_SEC_ADDR, 1, &val, RTC_REG_CNT);
- i2c_read(CFG_I2C_RTC_ADDR, RTC_CONTROL_ADDR, 1, &val, 1);
+ i2c_read(CONFIG_SYS_I2C_RTC_ADDR, RTC_CONTROL_ADDR, 1, &val, 1);
val = val & 0x3F;/*turn off freq test keep calibration*/
- i2c_write(CFG_I2C_RTC_ADDR, RTC_CONTROL_ADDR, 1, &val, 1);
+ i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_CONTROL_ADDR, 1, &val, 1);
}
-
-int rtc_store(int addr, unsigned char* data, int size)
-{
- /*don't let things wrap onto the time on a write*/
- if( (addr+size) >= M41T11_STORAGE_SZ )
- return 1;
- return i2c_write( CFG_I2C_RTC_ADDR, REG_CNT+addr, 1, data, size );
-}
-
-int rtc_recall(int addr, unsigned char* data, int size)
-{
- return i2c_read( CFG_I2C_RTC_ADDR, REG_CNT+addr, 1, data, size );
-}
-
-#endif
projects / oweals / u-boot.git / blobdiff