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drivers: can_mcan: One shot mode support #79995

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drivers: can_mcan: One shot mode support #79995

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11 changes: 9 additions & 2 deletions drivers/can/can_mcan.c
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Original file line number Diff line number Diff line change
Expand Up @@ -275,7 +275,7 @@ int can_mcan_get_capabilities(const struct device *dev, can_mode_t *cap)
{
ARG_UNUSED(dev);

*cap = CAN_MODE_NORMAL | CAN_MODE_LOOPBACK | CAN_MODE_LISTENONLY;
*cap = CAN_MODE_NORMAL | CAN_MODE_LOOPBACK | CAN_MODE_LISTENONLY | CAN_MODE_ONE_SHOT;

if (IS_ENABLED(CONFIG_CAN_MANUAL_RECOVERY_MODE)) {
*cap |= CAN_MODE_MANUAL_RECOVERY;
Expand Down Expand Up @@ -373,7 +373,7 @@ int can_mcan_stop(const struct device *dev)

int can_mcan_set_mode(const struct device *dev, can_mode_t mode)
{
can_mode_t supported = CAN_MODE_LOOPBACK | CAN_MODE_LISTENONLY;
can_mode_t supported = CAN_MODE_LOOPBACK | CAN_MODE_LISTENONLY | CAN_MODE_ONE_SHOT;
struct can_mcan_data *data = dev->data;
uint32_t cccr;
uint32_t test;
Expand Down Expand Up @@ -423,6 +423,13 @@ int can_mcan_set_mode(const struct device *dev, can_mode_t mode)
cccr &= ~CAN_MCAN_CCCR_MON;
}

if ((mode & CAN_MODE_ONE_SHOT) != 0) {
/* No automatic retransmission */
cccr |= CAN_MCAN_CCCR_DAR;
} else {
cccr &= ~CAN_MCAN_CCCR_DAR;
}

#ifdef CONFIG_CAN_FD_MODE
if ((mode & CAN_MODE_FD) != 0) {
cccr |= CAN_MCAN_CCCR_FDOE | CAN_MCAN_CCCR_BRSE;
Expand Down
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