21 void timecounter_init(struct timecounter *tc,  in timecounter_init()  argument
25 	tc->cc = cc;  in timecounter_init()
26 	tc->cycle_last = cc->read(cc);  in timecounter_init()
27 	tc->nsec = start_tstamp;  in timecounter_init()
28 	tc->mask = (1ULL << cc->shift) - 1;  in timecounter_init()
29 	tc->frac = 0;  in timecounter_init()
44 static u64 timecounter_read_delta(struct timecounter *tc)  in timecounter_read_delta()  argument
50 	cycle_now = tc->cc->read(tc->cc);  in timecounter_read_delta()
53 	cycle_delta = (cycle_now - tc->cycle_last) & tc->cc->mask;  in timecounter_read_delta()
56 	ns_offset = cyclecounter_cyc2ns(tc->cc, cycle_delta,  in timecounter_read_delta()
57 					tc->mask, &tc->frac);  in timecounter_read_delta()
60 	tc->cycle_last = cycle_now;  in timecounter_read_delta()
65 u64 timecounter_read(struct timecounter *tc)  in timecounter_read()  argument
70 	nsec = timecounter_read_delta(tc);  in timecounter_read()
71 	nsec += tc->nsec;  in timecounter_read()
72 	tc->nsec = nsec;  in timecounter_read()
92 u64 timecounter_cyc2time(struct timecounter *tc,  in timecounter_cyc2time()  argument
95 	u64 delta = (cycle_tstamp - tc->cycle_last) & tc->cc->mask;  in timecounter_cyc2time()
96 	u64 nsec = tc->nsec, frac = tc->frac;  in timecounter_cyc2time()
103 	if (delta > tc->cc->mask / 2) {  in timecounter_cyc2time()
104 		delta = (tc->cycle_last - cycle_tstamp) & tc->cc->mask;  in timecounter_cyc2time()
105 		nsec -= cc_cyc2ns_backwards(tc->cc, delta, tc->mask, frac);  in timecounter_cyc2time()
107 		nsec += cyclecounter_cyc2ns(tc->cc, delta, tc->mask, &frac);  in timecounter_cyc2time()