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| author | Thomas Gleixner <tglx@kernel.org> | 2026-05-29 22:01:21 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-06-04 11:04:18 +0200 |
| commit | 9aebde8af6fe247d92816c197badf7e236c8f037 (patch) | |
| tree | 750258476a2e9a25b3150b7eaa187ab4eb79ec37 /kernel | |
| parent | 5ccaf1e569f04d8fd5f0167be728fdb48f448f81 (diff) | |
| download | linux-next-9aebde8af6fe247d92816c197badf7e236c8f037.tar.gz linux-next-9aebde8af6fe247d92816c197badf7e236c8f037.zip | |
timekeeping: Add support for AUX clock cross timestamping
Now that all prerequisites are in place add the final support for AUX
clocks in get_device_system_crosststamp(), which enables the PTP layer to
support hardware cross timestamps with a new IOTCL.
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Arthur Kiyanovski <akiyano@amazon.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20260529195558.097464513@kernel.org
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/time/timekeeping.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index dae61c9e31e6..65d870c2d40d 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -1517,6 +1517,12 @@ int get_device_system_crosststamp(int (*get_time_fn) tkd = &tk_core; offs = &tk_core.timekeeper.offs_real; break; + case CLOCK_AUX ... CLOCK_AUX_LAST: + tkd = aux_get_tk_data(xtstamp->clock_id); + if (!tkd) + return -ENODEV; + offs = &tkd->timekeeper.offs_aux; + break; default: WARN_ON_ONCE(1); return -ENODEV; |