diff options
Diffstat (limited to 'drivers/ptp')
| -rw-r--r-- | drivers/ptp/ptp_vclock.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/ptp/ptp_vclock.c b/drivers/ptp/ptp_vclock.c index 2f0b46386176..cb179a3ea508 100644 --- a/drivers/ptp/ptp_vclock.c +++ b/drivers/ptp/ptp_vclock.c @@ -95,6 +95,28 @@ static int ptp_vclock_settime(struct ptp_clock_info *ptp, return 0; } +static int ptp_vclock_getcrosststamp(struct ptp_clock_info *ptp, + struct system_device_crosststamp *xtstamp) +{ + struct ptp_vclock *vclock = info_to_vclock(ptp); + struct ptp_clock *pptp = vclock->pclock; + unsigned long flags; + int err; + u64 ns; + + err = pptp->info->getcrosststamp(pptp->info, xtstamp); + if (err) + return err; + + spin_lock_irqsave(&vclock->lock, flags); + ns = timecounter_cyc2time(&vclock->tc, ktime_to_ns(xtstamp->device)); + spin_unlock_irqrestore(&vclock->lock, flags); + + xtstamp->device = ns_to_ktime(ns); + + return 0; +} + static long ptp_vclock_refresh(struct ptp_clock_info *ptp) { struct ptp_vclock *vclock = info_to_vclock(ptp); @@ -150,6 +172,8 @@ struct ptp_vclock *ptp_vclock_register(struct ptp_clock *pclock) vclock->info.gettimex64 = ptp_vclock_gettimex; else vclock->info.gettime64 = ptp_vclock_gettime; + if (pclock->info->getcrosststamp) + vclock->info.getcrosststamp = ptp_vclock_getcrosststamp; vclock->cc = ptp_vclock_cc; snprintf(vclock->info.name, PTP_CLOCK_NAME_LEN, "ptp%d_virt", |