can: sja1000: Add support for CAN_CTRLMODE_LOOPBACK

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This adds support for hardware loopback in SJA1000 by utilising its self
reception request (SRR) feature. Upon SRR the message is transmitted and
received simultaneously, meaning you can't have hardware loopback
without actually sending a message to the CAN bus in case of SJA1000.

Signed-off-by: Nikita Edward Baruzdin <nebaruzdin@gmail.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

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Nikita Edward Baruzdin 2014-07-11 16:13:20 +04:00 • committed by Marc Kleine-Budde

parent 4b9e1bab12

commit dcf9e15267

1 changed files with 13 additions and 5 deletions

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18

drivers/net/can/sja1000/sja1000.c

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