diff options
| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2023-09-28 09:24:28 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2023-10-05 21:44:48 +0200 |
| commit | 9beebc2b5d0038a65977a7a14909598c64ce070f (patch) | |
| tree | bf196909d99bd5bfc45327af664101263046a7ac /include/linux/can | |
| parent | 2f0382a7590ed65ef6a4336aace0f30814e24dc1 (diff) | |
can: dev: add can_state_get_by_berr_counter() to return the CAN state based on the current error counters
Some CAN controllers do not have a register that contains the current
CAN state, but only a register that contains the error counters.
Introduce a new function can_state_get_by_berr_counter() that returns
the current TX and RX state depending on the provided CAN bit error
counters.
Link: https://lore.kernel.org/all/20231005-at91_can-rx_offload-v2-1-9987d53600e0@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'include/linux/can')
| -rw-r--r-- | include/linux/can/dev.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h index 982ba245eb41..1b92aed49363 100644 --- a/include/linux/can/dev.h +++ b/include/linux/can/dev.h @@ -195,6 +195,10 @@ int can_restart_now(struct net_device *dev); void can_bus_off(struct net_device *dev); const char *can_get_state_str(const enum can_state state); +void can_state_get_by_berr_counter(const struct net_device *dev, + const struct can_berr_counter *bec, + enum can_state *tx_state, + enum can_state *rx_state); void can_change_state(struct net_device *dev, struct can_frame *cf, enum can_state tx_state, enum can_state rx_state); |