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bnxt_en: Add PTP clock APIs, ioctls, and ethtool methods

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Add the clock APIs to set/get/adjust the hw clock, and the related
ioctls and ethtool methods.

v2: Propagate error code from ptp_clock_register().
    Add spinlock to serialize access to the timecounter.  The
    timecounter is accessed in process context and the RX datapath.
    Read the PHC using direct registers.

Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2021-06-27 13:19:46 -04:00 • committed by David S. Miller
commit 118612d519
6 changed files with 382 additions and 1 deletions
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