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Agptek Rocker: Fix saving time in hwclock

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Rocker is configured with CST (China Standard Time) timezone
which is UTC+8. Time in RTC is stored in UTC.

Change-Id: Ib9c03e0f0a1d3ea3a69f238cb083809ea9386e2a
This commit is contained in:
Marcin Bukat 2018-04-10 22:49:09 +02:00
parent 1af78b99d9
commit a81391b623
1 changed files with 22 additions and 1 deletions
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23
firmware/target/hosted/rtc.c
View file

@ -22,6 +22,10 @@
****************************************************************************/ ****************************************************************************/
#include <time.h> #include <time.h>
#include <sys/time.h> #include <sys/time.h>
#include <sys/ioctl.h>
#include <linux/rtc.h>
#include <fcntl.h>
#include <unistd.h>
void rtc_init(void) void rtc_init(void)
{ {
@ -37,10 +41,27 @@ int rtc_read_datetime(struct tm *tm)
int rtc_write_datetime(const struct tm *tm) int rtc_write_datetime(const struct tm *tm)
{ {
#if defined(AGPTEK_ROCKER)
struct timeval tv; struct timeval tv;
struct tm *tm_time;
int rtc = open("/dev/rtc0", O_WRONLY);
tv.tv_sec = mktime((struct tm *)tm); tv.tv_sec = mktime((struct tm *)tm);
tv.tv_usec = 0; tv.tv_usec = 0;
return settimeofday(&tv, NULL); /* set system clock */
settimeofday(&tv, NULL);
/* hw clock stores time in UTC */
time_t now = time(NULL);
tm_time = gmtime(&now);
ioctl(rtc, RTC_SET_TIME, (struct rtc_time *)tm_time);
close(rtc);
return 0;
#else
return -1;
#endif
} }