Move intrinsic RTC implmentation differences to driver files

Some drivers set tm_wday just fine and do not need it coerced to
be correct. Others set tm_yday, so don't overwrite what the driver
sets; just zero it inside if it can't fill the field. Move calls
to set_day_of_week() to the sorts of drivers that presumably
required the hammer (FS#11814) in get_time() where the weekday
isn't locked to the date.

Change-Id: Idd0ded6bfc9d9f48fcc1a6074068164c42fcf24a

1 files changed, 3 insertions, 0 deletions

diff --git a/firmware/libc/gmtime.c b/firmware/libc/gmtime.c
index e7ebdf0d90..c5deb593cd 100644
--- a/firmware/libc/gmtime.c
+++ b/firmware/libc/gmtime.c
@@ -108,6 +108,9 @@ struct tm *gmtime_r(const time_t *timep, struct tm *tm)
     /* Second */
     tm->tm_sec = seconds;
 
+    tm->tm_yday = 0; /* Not implemented for now */
+    tm->tm_isdst = -1; /* Not implemented for now */
+
     return tm;
 }