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| author |   Vincent Mailhol <mailhol.vincent@wanadoo.fr> | 2020-10-03 00:41:49 +0900 |
|---|---|---|
| committer |   Marc Kleine-Budde <mkl@pengutronix.de> | 2020-10-07 23:17:45 +0200 |
| commit | 1c47fa6b31c2683f03bc2f9174902bb7dcd35d83 (patch) | |
| tree | 6b23951a7d08219521f24875aaa6fc1f843f6bb3 /net/can/isotp.c | |
| parent | can: dev: fix type of get_can_dlc() and get_canfd_dlc() macros (diff) | |
| download | wireguard-linux-1c47fa6b31c2683f03bc2f9174902bb7dcd35d83.tar.xz wireguard-linux-1c47fa6b31c2683f03bc2f9174902bb7dcd35d83.zip | |
can: dev: add a helper function to calculate the duration of one bit
Rename macro CAN_CALC_SYNC_SEG to CAN_SYNC_SEG and make it available
through include/linux/can/dev.h
Add an helper function can_bit_time() which returns the duration (in
time quanta) of one CAN bit.
Rationale for this patch: the sync segment and the bit time are two
concepts which are defined in the CAN ISO standard. Device drivers for
CAN might need those.
Please refer to ISO 11898-1:2015, section 11.3.1.1 "Bit time" for
additional information.
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/r/20201002154219.4887-6-mailhol.vincent@wanadoo.fr
[mkl: Let can_bit_time() return an unsinged int, make argument const]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'net/can/isotp.c')
0 files changed, 0 insertions, 0 deletions