OpenCloudOS-Kernel/drivers/net/can/cc770
Vincent Mailhol 409c188c57 can: tree-wide: advertise software timestamping capabilities
Currently, some CAN drivers support hardware timestamping, some do
not. But userland has no method to query which features are supported
(aside maybe of getting RX messages and observe whether or not
hardware timestamps stay at zero).

The canonical way for a network driver to advertised what kind of
timestamping it supports is to implement ethtool_ops::get_ts_info().

This patch only targets the CAN drivers which *do not* support
hardware timestamping.  For each of those CAN drivers, implement the
get_ts_info() using the generic ethtool_op_get_ts_info().

This way, userland can do:

| $ ethtool --show-time-stamping canX

to confirm the device timestamping capacities.

N.B. the drivers which support hardware timestamping will be migrated
in separate patches.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20220727101641.198847-6-mailhol.vincent@wanadoo.fr
[mkl: mscan: add missing mscan_ethtool_ops]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-28 11:44:01 +02:00
..
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
cc770.c can: tree-wide: advertise software timestamping capabilities 2022-07-28 11:44:01 +02:00
cc770.h can: drivers: fix spelling mistakes 2020-09-21 10:13:16 +02:00
cc770_isa.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
cc770_platform.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 495 2019-06-19 17:09:52 +02:00