diff options
| author | Carolina Jubran <cjubran@nvidia.com> | 2025-08-12 17:17:06 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-09-09 10:33:24 +0300 |
| commit | faf23f54d366467bb449a7b2c39b382db9f92e80 (patch) | |
| tree | 0db7ad9b40c9346eb9aaa800f8ee874083031d65 /include/uapi/linux | |
| parent | 9f0730b063b436938ebb6371aecb12ec6ed896e9 (diff) | |
| download | linux-faf23f54d366467bb449a7b2c39b382db9f92e80.tar.xz | |
ptp: Add ioctl commands to expose raw cycle counter values
Introduce two new ioctl commands, PTP_SYS_OFFSET_PRECISE_CYCLES and
PTP_SYS_OFFSET_EXTENDED_CYCLES, to allow user space to access the
raw free-running cycle counter from PTP devices.
These ioctls are variants of the existing PRECISE and EXTENDED
offset queries, but instead of returning device time in realtime,
they return the raw cycle counter value.
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Link: https://patch.msgid.link/1755008228-88881-2-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/ptp_clock.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/ptp_clock.h b/include/uapi/linux/ptp_clock.h index 18eefa6d93d6..65f187b5f0d0 100644 --- a/include/uapi/linux/ptp_clock.h +++ b/include/uapi/linux/ptp_clock.h @@ -245,6 +245,10 @@ struct ptp_pin_desc { _IOWR(PTP_CLK_MAGIC, 18, struct ptp_sys_offset_extended) #define PTP_MASK_CLEAR_ALL _IO(PTP_CLK_MAGIC, 19) #define PTP_MASK_EN_SINGLE _IOW(PTP_CLK_MAGIC, 20, unsigned int) +#define PTP_SYS_OFFSET_PRECISE_CYCLES \ + _IOWR(PTP_CLK_MAGIC, 21, struct ptp_sys_offset_precise) +#define PTP_SYS_OFFSET_EXTENDED_CYCLES \ + _IOWR(PTP_CLK_MAGIC, 22, struct ptp_sys_offset_extended) struct ptp_extts_event { struct ptp_clock_time t; /* Time event occurred. */ |