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
