+/*
+ * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
/*
* Date & Time support for Philips PCF8583 RTC
*/
#include "common.h"
#include <stdlib.h>
-#include "debug.h"
-#include "command.h"
+#include "time.h"
#include "rtc.h"
#include "i2c.h"
+#include "command.h"
+#include "debug.h"
#define DEBUG_RTC 0
static uint8_t bin2bcd (uint_fast8_t val)
{
div_t d = div(val, 10);
-
+
return (d.quot << 4) | d.rem;
}
-int rtc_get (struct rtc_time *tmp)
+int rtc_get (struct tm *tmp)
{
- int rel = 0;
uint8_t rtcbuf[NR_OF_REGS];
- uint16_t year;
-
+ int16_t year;
+
i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, rtcbuf, NR_OF_REGS);
i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0x10, 1, (uint8_t *) &year, 2);
- debug_rtc("Get RTC year: %u, year/date: %02x, wdays/month: %02x, "
+ debug_rtc("Get RTC year: %u, wdays/month: %02x, year/date: %02x, "
"hour: %02x, min: %02x, sec: %02x, (stat: %02x)\n", year,
rtcbuf[6], rtcbuf[5], rtcbuf[4], rtcbuf[3], rtcbuf[2], rtcbuf[0]);
tmp->tm_min = bcd2bin (rtcbuf[REG_MIN] & 0x7F);
tmp->tm_hour = bcd2bin (rtcbuf[REG_HOUR] & 0x3F);
tmp->tm_mday = bcd2bin (rtcbuf[REG_YRDATE] & 0x3F);
- tmp->tm_mon = bcd2bin (rtcbuf[REG_WDMON] & 0x1F);
- while (year%4 < (rtcbuf[REG_YRDATE]>>6)) {
+ tmp->tm_mon = bcd2bin (rtcbuf[REG_WDMON] & 0x1F) - 1;
+ while (year%4 != (rtcbuf[REG_YRDATE]>>6)) {
year++;
- /* TODO: update RTC ram */
+ i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0x10, 1, (uint8_t *) &year, 2);
}
- tmp->tm_year = year;
+ tmp->tm_year = year - 1900;
tmp->tm_wday = rtcbuf[REG_WDMON] >> 5;
tmp->tm_yday = 0;
tmp->tm_isdst= 0;
-
debug_rtc( "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);
- return rel;
+ return rtcbuf[REG_CS] == 0x04 ? 0 : 1;
}
-int rtc_set (struct rtc_time *tmp)
+int rtc_set (struct tm *tmp)
{
uint8_t rtcbuf[NR_OF_REGS];
+ int16_t year = tmp->tm_year + 1900;
debug_rtc("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
rtcbuf[REG_CS] = 0x84;
rtcbuf[REG_CSEC] = 0x00;
- rtcbuf[REG_WDMON ] = bin2bcd(tmp->tm_mon) | ((tmp->tm_wday) << 5);
- rtcbuf[REG_YRDATE] = ((tmp->tm_year % 4) << 6) | bin2bcd(tmp->tm_mday);
+ rtcbuf[REG_WDMON ] = (bin2bcd(tmp->tm_mon) + 1) | ((tmp->tm_wday) << 5);
+ rtcbuf[REG_YRDATE] = ((year % 4) << 6) | bin2bcd(tmp->tm_mday);
rtcbuf[REG_HOUR ] = bin2bcd(tmp->tm_hour);
rtcbuf[REG_MIN ] = bin2bcd(tmp->tm_min);
rtcbuf[REG_SEC ] = bin2bcd(tmp->tm_sec);
i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, rtcbuf, NR_OF_REGS);
- i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0x10, 1, (uint8_t *) &tmp->tm_year, 2);
+ i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0x10, 1, (uint8_t *) &year, 2);
rtcbuf[REG_CS] = 0x04;
i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, rtcbuf, 1);
-
return 0;
}