From 17a50ee4bd47bdba94546e0526fc9ce93dc77d5e Mon Sep 17 00:00:00 2001 From: Yoann DI RUZZA <ydiruzza@gmail.com> Date: Tue, 11 Feb 2014 09:46:59 +0100 Subject: [PATCH] can: at91_can: add listen only mode This patch adds listen only mode support to the at91_can driver. Signed-off-by: Yoann DI-RUZZA <ydiruzza@gmail.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> --- drivers/net/can/at91_can.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index 6efe27458116c..1d00b95f8983c 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -420,7 +420,11 @@ static void at91_chip_start(struct net_device *dev) at91_transceiver_switch(priv, 1); /* enable chip */ - at91_write(priv, AT91_MR, AT91_MR_CANEN); + if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) + reg_mr = AT91_MR_CANEN | AT91_MR_ABM; + else + reg_mr = AT91_MR_CANEN; + at91_write(priv, AT91_MR, reg_mr); priv->can.state = CAN_STATE_ERROR_ACTIVE; @@ -1341,7 +1345,8 @@ static int at91_can_probe(struct platform_device *pdev) priv->can.bittiming_const = &at91_bittiming_const; priv->can.do_set_mode = at91_set_mode; priv->can.do_get_berr_counter = at91_get_berr_counter; - priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES; + priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES | + CAN_CTRLMODE_LISTENONLY; priv->dev = dev; priv->reg_base = addr; priv->devtype_data = *devtype_data; -- GitLab