netdev - [PATCH v2 net-next 0/7] Hardware operations for the SJA1105 DSA PTP clock

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Date:   Tue, 10 Sep 2019 04:34:54 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     f.fainelli@...il.com, vivien.didelot@...il.com, andrew@...n.ch,
        davem@...emloft.net, richardcochran@...il.com
Cc:     netdev@...r.kernel.org, Vladimir Oltean <olteanv@...il.com>
Subject: [PATCH v2 net-next 0/7] Hardware operations for the SJA1105 DSA PTP clock

This series performs the following changes to the PTP portion of the
driver:
- Deletes the timecounter/cyclecounter implementation of a free-running
  PHC and replaces it with actual hardware corrections of the PTP
  timestamping clock.
- Deletes the approximation of timecounter_init() with the argument of
  ktime_to_ns(ktime_get_real()) (aka system clock) that is currently
  done in sja1105_ptp_reset. Now that the PTP clock can keep the wall
  time in hardware, it makes sense to do so (and thus arises the need
  to restore the PTP time after resetting the switch).
- Profits from the fact that timecounter/cyclecounter code has been
  removed from sja1105_main.c, and goes a step further by doing some
  more cleanup and making the PTP Kconfig more self-contained. The
  cleanup also covers preparing the driver for the gettimex API
  (PTP_SYS_OFFSET_EXTENDED ioctl) - an API which at the moment does
  not have the best implementation available in the kernel for this
  switch, but for which the addition of a better API is trivial after
  the cleanup.

 drivers/net/dsa/sja1105/sja1105.h      |  18 +-
 drivers/net/dsa/sja1105/sja1105_main.c |  66 ++++--
 drivers/net/dsa/sja1105/sja1105_ptp.c  | 283 +++++++++++++------------
 drivers/net/dsa/sja1105/sja1105_ptp.h  |  78 +++++++
 drivers/net/dsa/sja1105/sja1105_spi.c  |  42 ++--
 5 files changed, 310 insertions(+), 177 deletions(-)

-- 

These are the PTP patches that have been split apart from:
https://www.spinics.net/lists/netdev/msg597214.html
("tc-taprio offload for SJA1105 DSA").
As such I have marked them as v2. There are no changes since the
tc-taprio patchset, it is only for better review-ability.

Vladimir Oltean (7):
  net: dsa: sja1105: Get rid of global declaration of struct
    ptp_clock_info
  net: dsa: sja1105: Change the PTP command access pattern
  net: dsa: sja1105: Switch to hardware operations for PTP
  net: dsa: sja1105: Implement the .gettimex64 system call for PTP
  net: dsa: sja1105: Restore PTP time after switch reset
  net: dsa: sja1105: Disallow management xmit during switch reset
  net: dsa: sja1105: Move PTP data to its own private structure

2.17.1