void cvmx_rtc_ds1337_dump_state(void)
{
int i = 0;
printf("RTC:\n");
printf("%d : %02X ", i, cvmx_twsi_read8(CVMX_RTC_DS1337_ADDR, 0x0));
for(i=1; i<16; i++) {
printf("%02X ", cvmx_twsi_read8_cur_addr(CVMX_RTC_DS1337_ADDR));
}
printf("\n");
}
/*
* Board-specifc RTC read
* Time is expressed in seconds from epoch (Jan 1 1970 at 00:00:00 UTC)
* and converted internally to calendar format.
*/
uint32_t cvmx_rtc_ds1337_read(void)
{
int i, retry;
uint8_t reg[8];
uint8_t sec;
struct clocktime ct;
struct timespec ts;
memset(®, 0, sizeof(reg));
memset(&ct, 0, sizeof(ct));
for(retry=0; retry<2; retry++)
{
/* Lockless read: detects the infrequent roll-over and retries */
reg[0] = cvmx_twsi_read8(CVMX_RTC_DS1337_ADDR, 0x0);
for(i=1; i<7; i++)
reg[i] = cvmx_twsi_read8_cur_addr(CVMX_RTC_DS1337_ADDR);
sec = cvmx_twsi_read8(CVMX_RTC_DS1337_ADDR, 0x0);
if ((sec & 0xf) == (reg[0] & 0xf))
break; /* Time did not roll-over, value is correct */
}
ct.sec = bcd2bin(reg[0] & 0x7f);
ct.min = bcd2bin(reg[1] & 0x7f);
ct.hour = bcd2bin(reg[2] & 0x3f);
if ((reg[2] & 0x40) && (reg[2] & 0x20)) /* AM/PM format and is PM time */
{
ct.hour = (ct.hour + 12) % 24;
}
ct.dow = (reg[3] & 0x7); /* Day of week field is 1..7 */
ct.day = bcd2bin(reg[4] & 0x3f);
ct.mon = bcd2bin(reg[5] & 0x1f); /* Month field is 1..12 */
#if defined(OCTEON_BOARD_CAPK_0100ND)
/*
* CAPK-0100ND uses DS1307 that does not have century bit
*/
ct.year = 2000 + bcd2bin(reg[6]);
#else
ct.year = ((reg[5] & 0x80) ? 2000 : 1900) + bcd2bin(reg[6]);
#endif
if (validate_ct_struct(&ct))
cvmx_dprintf("Warning: RTC calendar is not configured properly\n");
if (clock_ct_to_ts(&ct, &ts) != 0) {
cvmx_dprintf("Warning: RTC calendar is not configured properly\n");
return 0;
}
return ts.tv_sec;
}
/*
* Board-specifc RTC read
* Time is expressed in seconds from epoch (Jan 1 1970 at 00:00:00 UTC)
* and converted internally to calendar format.
*/
uint32_t cvmx_rtc_ds1337_read(void)
{
int i, retry;
uint32_t time;
uint8_t reg[8];
uint8_t sec;
struct tm tms;
memset(®, 0, sizeof(reg));
memset(&tms, 0, sizeof(struct tm));
for(retry=0; retry<2; retry++)
{
/* Lockless read: detects the infrequent roll-over and retries */
reg[0] = cvmx_twsi_read8(CVMX_RTC_DS1337_ADDR, 0x0);
for(i=1; i<7; i++)
reg[i] = cvmx_twsi_read8_cur_addr(CVMX_RTC_DS1337_ADDR);
sec = cvmx_twsi_read8(CVMX_RTC_DS1337_ADDR, 0x0);
if ((sec & 0xf) == (reg[0] & 0xf))
break; /* Time did not roll-over, value is correct */
}
tms.tm_sec = bcd2bin(reg[0] & 0x7f);
tms.tm_min = bcd2bin(reg[1] & 0x7f);
tms.tm_hour = bcd2bin(reg[2] & 0x3f);
if ((reg[2] & 0x40) && (reg[2] & 0x20)) /* AM/PM format and is PM time */
{
tms.tm_hour = (tms.tm_hour + 12) % 24;
}
tms.tm_wday = (reg[3] & 0x7) - 1; /* Day of week field is 0..6 */
tms.tm_mday = bcd2bin(reg[4] & 0x3f);
tms.tm_mon = bcd2bin(reg[5] & 0x1f) - 1; /* Month field is 0..11 */
tms.tm_year = ((reg[5] & 0x80) ? 100 : 0) + bcd2bin(reg[6]);
if (validate_tm_struct(&tms))
cvmx_dprintf("Warning: RTC calendar is not configured properly\n");
time = mktime(&tms);
return time;
}
