aboutsummaryrefslogtreecommitdiff
path: root/sys/dev/iicbus/ds1307.c
diff options
context:
space:
mode:
authorIan Lepore <ian@FreeBSD.org>2017-07-31 21:53:00 +0000
committerIan Lepore <ian@FreeBSD.org>2017-07-31 21:53:00 +0000
commit13fd9ff7678ebdfe3cac9c9da237de2e09e841c3 (patch)
tree86798efe47b8dc96759ecb5837a0e799b0d4cdd4 /sys/dev/iicbus/ds1307.c
parent03515a51917d23e9634912f97e4d3bb46dd5c5f4 (diff)
Notes
Diffstat (limited to 'sys/dev/iicbus/ds1307.c')
-rw-r--r--sys/dev/iicbus/ds1307.c23
1 files changed, 13 insertions, 10 deletions
diff --git a/sys/dev/iicbus/ds1307.c b/sys/dev/iicbus/ds1307.c
index d93e13d0775b1..7332c820dc094 100644
--- a/sys/dev/iicbus/ds1307.c
+++ b/sys/dev/iicbus/ds1307.c
@@ -303,12 +303,12 @@ ds1307_start(void *xdev)
CTLFLAG_RW | CTLTYPE_UINT | CTLFLAG_MPSAFE, sc, 0,
ds1307_sqw_out_sysctl, "IU", "DS1307 square-wave output state");
- /*
- * Register as a clock with 1 second resolution. Schedule the
- * clock_settime() method to be called just after top-of-second;
- * resetting the time resets top-of-second in the hardware.
- */
- clock_register_flags(dev, 1000000, CLOCKF_SETTIME_NO_TS);
+ /*
+ * Register as a clock with 1 second resolution. Schedule the
+ * clock_settime() method to be called just after top-of-second;
+ * resetting the time resets top-of-second in the hardware.
+ */
+ clock_register_flags(dev, 1000000, CLOCKF_SETTIME_NO_ADJ);
clock_schedule(dev, 1);
}
@@ -368,6 +368,13 @@ ds1307_settime(device_t dev, struct timespec *ts)
sc = device_get_softc(dev);
+ /*
+ * We request a timespec with no resolution-adjustment. That also
+ * disables utc adjustment, so apply that ourselves.
+ */
+ ts->tv_sec -= utc_offset();
+ clock_ts_to_ct(ts, &ct);
+
/* If the chip is in AM/PM mode, adjust hour and set flags as needed. */
if (sc->sc_use_ampm) {
pmflags = DS1307_HOUR_USE_AMPM;
@@ -380,10 +387,6 @@ ds1307_settime(device_t dev, struct timespec *ts)
} else
pmflags = 0;
- getnanotime(ts);
- ts->tv_sec -= utc_offset();
- clock_ts_to_ct(ts, &ct);
-
data[DS1307_SECS] = TOBCD(ct.sec);
data[DS1307_MINS] = TOBCD(ct.min);
data[DS1307_HOUR] = TOBCD(ct.hour) | pmflags;