netdev - [PATCH v3 0/9] ptp .adjphase cleanups

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Date: Mon, 12 Jun 2023 14:14:51 -0700
From: Rahul Rameshbabu <rrameshbabu@...dia.com>
To: netdev@...r.kernel.org
Cc: Gal Pressman <gal@...dia.com>,
	Saeed Mahameed <saeed@...nel.org>,
	Tariq Toukan <tariqt@...dia.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Richard Cochran <richardcochran@...il.com>,
	Jacob Keller <jacob.e.keller@...el.com>,
	Paolo Abeni <pabeni@...hat.com>,
	"David S. Miller" <davem@...emloft.net>,
	Rahul Rameshbabu <rrameshbabu@...dia.com>
Subject: [PATCH v3 0/9] ptp .adjphase cleanups

The goal of this patch series is to improve documentation of .adjphase, add
a new callback .getmaxphase to enable advertising the max phase offset a
device PHC can support, and support invoking .adjphase from the testptp
kselftest.

Changes:
  v3->v2:
    * Add information about returning -ERANGE instead of clamping
      out-of-range offsets for driver implementations of .adjphase that
      previously clamped out-of-range offsets.

      Link: https://lore.kernel.org/netdev/13b7315446390d3a78d8f508937354f12778b68e.camel@redhat.com/
  v2->v1:
    * Removes arbitrary rule that the PHC servo must restore the frequency
      to the value used in the last .adjfine call if any other PHC
      operation is used after a .adjphase operation.
    * Removes a macro introduced in v1 for adding PTP sysfs device
      attribute nodes using a callback for populating the data.

Link: https://lore.kernel.org/netdev/20230523205440.326934-1-rrameshbabu@nvidia.com/ 
Link: https://lore.kernel.org/netdev/20230510205306.136766-1-rrameshbabu@nvidia.com/
Link: https://lore.kernel.org/netdev/20230120160609.19160723@kernel.org/

Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Richard Cochran <richardcochran@...il.com>

Rahul Rameshbabu (9):
  ptp: Clarify ptp_clock_info .adjphase expects an internal servo to be
    used
  docs: ptp.rst: Add information about NVIDIA Mellanox devices
  testptp: Remove magic numbers related to nanosecond to second
    conversion
  testptp: Add support for testing ptp_clock_info .adjphase callback
  ptp: Add .getmaxphase callback to ptp_clock_info
  net/mlx5: Add .getmaxphase ptp_clock_info callback
  ptp: ptp_clockmatrix: Add .getmaxphase ptp_clock_info callback
  ptp: idt82p33: Add .getmaxphase ptp_clock_info callback
  ptp: ocp: Add .getmaxphase ptp_clock_info callback

 Documentation/driver-api/ptp.rst              | 29 +++++++++++++++
 .../ethernet/mellanox/mlx5/core/lib/clock.c   | 31 ++++++++--------
 drivers/ptp/ptp_chardev.c                     |  5 ++-
 drivers/ptp/ptp_clock.c                       |  4 +++
 drivers/ptp/ptp_clockmatrix.c                 | 36 +++++++++----------
 drivers/ptp/ptp_clockmatrix.h                 |  2 +-
 drivers/ptp/ptp_idt82p33.c                    | 18 +++++-----
 drivers/ptp/ptp_idt82p33.h                    |  4 +--
 drivers/ptp/ptp_ocp.c                         |  7 ++++
 drivers/ptp/ptp_sysfs.c                       | 12 +++++++
 include/linux/ptp_clock_kernel.h              | 11 ++++--
 include/uapi/linux/ptp_clock.h                |  3 +-
 tools/testing/selftests/ptp/testptp.c         | 29 ++++++++++++---
 13 files changed, 135 insertions(+), 56 deletions(-)

-- 
2.40.1