static void
ds1307_convert_to_time( struct rtc_time *dt, char *buf)
{
dt->tm_sec = BCD_TO_BIN(buf[0]);
dt->tm_min = BCD_TO_BIN(buf[1]);
if ( TWELVE_HOUR_MODE(buf[2]) )
{
dt->tm_hour = HOURS_12(buf[2]);
if (HOURS_AP(buf[2])) /* PM */
{
dt->tm_hour += 12;
}
}
else /* 24-hour-mode */
{
dt->tm_hour = HOURS_24(buf[2]);
}
dt->tm_mday = BCD_TO_BIN(buf[4]);
/* dt->tm_mon is zero-based */
dt->tm_mon = BCD_TO_BIN(buf[5]) - 1;
/* year is 1900 + dt->tm_year */
dt->tm_year = BCD_TO_BIN(buf[6]) + 100;
if( rtc_debug > 2)
{
printk("ds1307_get_datetime: year = %d\n", dt->tm_year);
printk("ds1307_get_datetime: mon = %d\n", dt->tm_mon);
printk("ds1307_get_datetime: mday = %d\n", dt->tm_mday);
printk("ds1307_get_datetime: hour = %d\n", dt->tm_hour);
printk("ds1307_get_datetime: min = %d\n", dt->tm_min);
printk("ds1307_get_datetime: sec = %d\n", dt->tm_sec);
}
}
/*
* Set the RTC
*/
void
rtc_set (struct rtc_time *tmp)
{
unsigned char buf[8], reg15;
int ret;
if (!setup_done)
rs5c372_enable();
if (!setup_done)
return;
if(rtc_debug > 2) {
printf("rtc_set: tm_year = %d\n", tmp->tm_year);
printf("rtc_set: tm_mon = %d\n", tmp->tm_mon);
printf("rtc_set: tm_mday = %d\n", tmp->tm_mday);
printf("rtc_set: tm_hour = %d\n", tmp->tm_hour);
printf("rtc_set: tm_min = %d\n", tmp->tm_min);
printf("rtc_set: tm_sec = %d\n", tmp->tm_sec);
}
memset(buf, 0, sizeof(buf));
/* only read register 15 */
ret = i2c_read(CFG_I2C_RTC_ADDR, 0, 0, buf, 1);
if (ret == 0) {
/* need to save register 15 */
reg15 = buf[0];
buf[0] = 0; /* register address on RS5C372 */
buf[1] = bin2bcd(tmp->tm_sec);
buf[2] = bin2bcd(tmp->tm_min);
/* need to handle 12 hour mode */
if (TWELVE_HOUR_MODE(reg15)) {
if (tmp->tm_hour >= 12) { /* PM */
/* 12 PM is a special case */
if (tmp->tm_hour == 12)
buf[3] = bin2bcd(tmp->tm_hour);
else
buf[3] = bin2bcd(tmp->tm_hour - 12);
buf[3] |= 0x20;
}
} else {
buf[3] = bin2bcd(tmp->tm_hour);
}
buf[4] = bin2bcd(tmp->tm_wday);
buf[5] = bin2bcd(tmp->tm_mday);
buf[6] = bin2bcd(tmp->tm_mon);
if (tmp->tm_year < 1970 || tmp->tm_year > 2069)
printf("WARNING: year should be between 1970 and 2069!\n");
buf[7] = bin2bcd(tmp->tm_year % 100);
ret = i2c_write(CFG_I2C_RTC_ADDR, 0, 0, buf, 8);
if (ret != 0)
printf("rs5c372_set_datetime(), i2c_master_send() returned %d\n",ret);
}
return;
}
static void
rs5c372_convert_to_time(struct rtc_time *dt, unsigned char *buf)
{
/* buf[0] is register 15 */
dt->tm_sec = bcd2bin(buf[1]);
dt->tm_min = bcd2bin(buf[2]);
if (TWELVE_HOUR_MODE(buf[0])) {
dt->tm_hour = HOURS_12(buf[3]);
if (HOURS_AP(buf[3])) /* PM */
dt->tm_hour += 12;
} else /* 24-hour-mode */
dt->tm_hour = HOURS_24(buf[3]);
dt->tm_mday = bcd2bin(buf[5]);
dt->tm_mon = bcd2bin(buf[6]);
dt->tm_year = bcd2bin(buf[7]);
if (dt->tm_year >= 70)
dt->tm_year += 1900;
else
dt->tm_year += 2000;
/* 0 is Sunday */
dt->tm_wday = bcd2bin(buf[4] & 0x07);
dt->tm_yday = 0;
dt->tm_isdst= 0;
if(rtc_debug > 2) {
printf("rs5c372_convert_to_time: year = %d\n", dt->tm_year);
printf("rs5c372_convert_to_time: mon = %d\n", dt->tm_mon);
printf("rs5c372_convert_to_time: mday = %d\n", dt->tm_mday);
printf("rs5c372_convert_to_time: hour = %d\n", dt->tm_hour);
printf("rs5c372_convert_to_time: min = %d\n", dt->tm_min);
printf("rs5c372_convert_to_time: sec = %d\n", dt->tm_sec);
}
}
