clock: Remove open-coded conversion of struct timespec

The function clock_check_ts() performs open-coded manipulation of a
struct timespec instead of using the tmv_t abstractions.

Use the existing tmv_t abstractions to convert from struct timespec to
nanoseconds, and modify the prototype of clock_check_ts() to match
that of the underlying clockcheck_sample().

Signed-off-by: Michael Brown <mbrown@fensystems.co.uk>

clock.c

@@ -1767,11 +1767,9 @@ enum clock_type clock_type(struct clock *c)
 	return c->type;
 }
 
-void clock_check_ts(struct clock *c, struct timespec ts)
+void clock_check_ts(struct clock *c, uint64_t ts)
 {
-	if (c->sanity_check &&
-	    clockcheck_sample(c->sanity_check,
-			      ts.tv_sec * NS_PER_SEC + ts.tv_nsec)) {
+	if (c->sanity_check && clockcheck_sample(c->sanity_check, ts)) {
 		servo_reset(c->servo);
 	}
 }

clock.h

@@ -316,7 +316,7 @@ enum clock_type clock_type(struct clock *c);
  * @param c  The clock instance.
  * @param ts The time stamp.
  */
-void clock_check_ts(struct clock *c, struct timespec ts);
+void clock_check_ts(struct clock *c, uint64_t ts);
 
 /**
  * Obtain ratio between master's frequency and current clock frequency.

port.c

@@ -2519,7 +2519,8 @@ enum fsm_event port_event(struct port *p, int fd_index)
 	}
 	if (msg_sots_valid(msg)) {
 		ts_add(&msg->hwts.ts, -p->rx_timestamp_offset);
-		clock_check_ts(p->clock, msg->hwts.ts);
+		clock_check_ts(p->clock,
+			       tmv_to_nanoseconds(timespec_to_tmv(msg->hwts.ts)));
 	}
 	if (port_ignore(p, msg)) {
 		msg_put(msg);