From: Vincent Cheng <[email protected]>
This series adds adjust phase to the PTP Hardware Clock device interface.
Some PTP hardware clocks have a write phase mode that has
a built-in hardware filtering capability. The write phase mode
utilizes a phase offset control word instead of a frequency offset
control word. Add adjust phase function to take advantage of this
capability.
Changes since v1:
- As suggested by Richard Cochran:
1. ops->adjphase is new so need to check for non-null function pointer.
2. Kernel coding style uses lower_case_underscores.
3. Use existing PTP clock API for delayed worker.
Vincent Cheng (3):
ptp: Add adjphase function to support phase offset control.
ptp: Add adjust_phase to ptp_clock_caps capability.
ptp: ptp_clockmatrix: Add adjphase() to support PHC write phase mode.
drivers/ptp/ptp_chardev.c | 1 +
drivers/ptp/ptp_clock.c | 3 ++
drivers/ptp/ptp_clockmatrix.c | 92 +++++++++++++++++++++++++++++++++++
drivers/ptp/ptp_clockmatrix.h | 8 ++-
include/linux/ptp_clock_kernel.h | 6 ++-
include/uapi/linux/ptp_clock.h | 4 +-
tools/testing/selftests/ptp/testptp.c | 6 ++-
7 files changed, 114 insertions(+), 6 deletions(-)
--
2.7.4
From: <[email protected]>
Date: Fri, 1 May 2020 23:35:35 -0400
> From: Vincent Cheng <[email protected]>
>
> This series adds adjust phase to the PTP Hardware Clock device interface.
>
> Some PTP hardware clocks have a write phase mode that has
> a built-in hardware filtering capability. The write phase mode
> utilizes a phase offset control word instead of a frequency offset
> control word. Add adjust phase function to take advantage of this
> capability.
>
> Changes since v1:
> - As suggested by Richard Cochran:
> 1. ops->adjphase is new so need to check for non-null function pointer.
> 2. Kernel coding style uses lower_case_underscores.
> 3. Use existing PTP clock API for delayed worker.
Series applied.