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can: m_can: add support for one shot mode
authorPankaj Sharma <pankj.sharma@samsung.com>
Mon, 21 Oct 2019 12:04:40 +0000 (17:34 +0530)
committerMarc Kleine-Budde <mkl@pengutronix.de>
Mon, 11 Nov 2019 20:58:09 +0000 (21:58 +0100)
commitfb7d6a81c220178851badef9dd6eeba88264320a
treef43a0f62e194f6ecb39e25efb0be800ff46e2db3
parent0ff8ee89624aaa74ee48a3015b4c1305b357e401
can: m_can: add support for one shot mode

According to the CAN Specification (see ISO 11898-1:2015, 8.3.4
Recovery Management), the M_CAN provides means for automatic
retransmission of frames that have lost arbitration or that
have been disturbed by errors during transmission. By default
automatic retransmission is enabled.

The Bosch MCAN controller has support for disabling automatic
retransmission.

To support time-triggered communication as described in ISO
11898-1:2015, chapter 9.2, the automatic retransmission may be
disabled via CCCR.DAR.

CAN_CTRLMODE_ONE_SHOT is used for disabling automatic retransmission.

Signed-off-by: Pankaj Sharma <pankj.sharma@samsung.com>
Signed-off-by: Sriram Dash <sriram.dash@samsung.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
drivers/net/can/m_can/m_can.c