net: dsa: ocelot: add hardware timestamping support for Felix
authorYangbo Lu <yangbo.lu@nxp.com>
Wed, 20 Nov 2019 08:23:18 +0000 (16:23 +0800)
committerDavid S. Miller <davem@davemloft.net>
Thu, 21 Nov 2019 22:39:02 +0000 (14:39 -0800)
commitc0bcf537667cf88bbcbb377d01d2b79c45265741
tree067419f4e20b69564b1ad6241da392a77793742f
parent5df66c48bc4e4019f92a8c62d0b74a97d102ba8d
net: dsa: ocelot: add hardware timestamping support for Felix

This patch is to reuse ocelot functions as possible to enable PTP
clock and to support hardware timestamping on Felix.
On TX path, timestamping works on packet which requires timestamp.
The injection header will be configured accordingly, and skb clone
requires timestamp will be added into a list. The TX timestamp
is final handled in threaded interrupt handler when PTP timestamp
FIFO is ready.
On RX path, timestamping is always working. The RX timestamp could
be got from extraction header.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/dsa/ocelot/felix.c
net/dsa/tag_ocelot.c