Advertise the maximum offset that can be fed to the PHC phase control
keyword.
Signed-off-by: Rahul Rameshbabu <rrameshb...@nvidia.com>
---
missing.h | 9 +++++----
phc_ctl.c | 4 ++++
2 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/missing.h b/missing.h
index 79a87d4..165a297 100644
--- a/missing.h
+++ b/missing.h
@@ -98,9 +98,9 @@ enum {
#define PTP_PEROUT_REQUEST2 PTP_PEROUT_REQUEST
#endif
-#if LINUX_VERSION_CODE < KERNEL_VERSION(5,8,0)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(6,5,0)
-/* from upcoming Linux kernel version 5.8 */
+/* from upcoming Linux kernel version 6.5 */
struct compat_ptp_clock_caps {
int max_adj; /* Maximum frequency adjustment in parts per billon. */
int n_alarm; /* Number of programmable alarms. */
@@ -112,12 +112,13 @@ struct compat_ptp_clock_caps {
int cross_timestamping;
/* Whether the clock supports adjust phase */
int adjust_phase;
- int rsv[12]; /* Reserved for future use. */
+ int max_phase_adj;
+ int rsv[11]; /* Reserved for future use. */
};
#define ptp_clock_caps compat_ptp_clock_caps
-#endif /*LINUX_VERSION_CODE < 5.8*/
+#endif /*LINUX_VERSION_CODE < 6.5*/
/*
* Bits of the ptp_perout_request.flags field:
diff --git a/phc_ctl.c b/phc_ctl.c
index c5430d8..a814648 100644
--- a/phc_ctl.c
+++ b/phc_ctl.c
@@ -355,6 +355,10 @@ static int do_caps(clockid_t clkid, int cmdc, char *cmdv[])
"no information regarding"
#endif
);
+
+ if (caps.max_phase_adj)
+ pr_notice(" %d maximum offset adjustment (ns)\n",
caps.max_phase_adj);
+
return 0;
}
--
2.40.1
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