diff options
| author | Rahul Rameshbabu <rrameshbabu@nvidia.com> | 2023-06-12 14:14:55 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-02-06 16:44:03 +0100 |
| commit | 00b3d0ef3bacd411f7bbb91b631769dd26e46306 (patch) | |
| tree | 84fb366e0f59b9ada4037dffecfbcdbcf28f355b /tools | |
| parent | bfd0e867a8b32ab4df42d51e37b91ad0f02b99cc (diff) | |
testptp: Add support for testing ptp_clock_info .adjphase callback
[ Upstream commit 3a9a9a6139286584d1199f555fa4f96f592a3217 ]
Invoke clock_adjtime syscall with tx.modes set with ADJ_OFFSET when testptp
is invoked with a phase adjustment offset value. Support seconds and
nanoseconds for the offset value.
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Maciek Machnikowski <maciek@machnikowski.net>
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 76868642e427 ("testptp: Add option to open PHC in readonly mode")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/ptp/testptp.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/tools/testing/selftests/ptp/testptp.c b/tools/testing/selftests/ptp/testptp.c index cfa9562f3cd8..9c3d36a40309 100644 --- a/tools/testing/selftests/ptp/testptp.c +++ b/tools/testing/selftests/ptp/testptp.c @@ -134,6 +134,7 @@ static void usage(char *progname) " 1 - external time stamp\n" " 2 - periodic output\n" " -n val shift the ptp clock time by 'val' nanoseconds\n" + " -o val phase offset (in nanoseconds) to be provided to the PHC servo\n" " -p val enable output with a period of 'val' nanoseconds\n" " -H val set output phase to 'val' nanoseconds (requires -p)\n" " -w val set output pulse width to 'val' nanoseconds (requires -p)\n" @@ -167,6 +168,7 @@ int main(int argc, char *argv[]) int adjfreq = 0x7fffffff; int adjtime = 0; int adjns = 0; + int adjphase = 0; int capabilities = 0; int extts = 0; int flagtest = 0; @@ -188,7 +190,7 @@ int main(int argc, char *argv[]) progname = strrchr(argv[0], '/'); progname = progname ? 1+progname : argv[0]; - while (EOF != (c = getopt(argc, argv, "cd:e:f:ghH:i:k:lL:n:p:P:sSt:T:w:z"))) { + while (EOF != (c = getopt(argc, argv, "cd:e:f:ghH:i:k:lL:n:o:p:P:sSt:T:w:z"))) { switch (c) { case 'c': capabilities = 1; @@ -228,6 +230,9 @@ int main(int argc, char *argv[]) case 'n': adjns = atoi(optarg); break; + case 'o': + adjphase = atoi(optarg); + break; case 'p': perout = atoll(optarg); break; @@ -327,6 +332,18 @@ int main(int argc, char *argv[]) } } + if (adjphase) { + memset(&tx, 0, sizeof(tx)); + tx.modes = ADJ_OFFSET | ADJ_NANO; + tx.offset = adjphase; + + if (clock_adjtime(clkid, &tx) < 0) { + perror("clock_adjtime"); + } else { + puts("phase adjustment okay"); + } + } + if (gettime) { if (clock_gettime(clkid, &ts)) { perror("clock_gettime"); |