Move the code for socket instanciation from each driver
to a generic driver, that makes an instance of a socketCAN
net device for the chosen node.
Signed-off-by: Alexander Wachter <alexander@wachter.cloud>
Include a pointer to the CAN controller device for the CAN
transmit, receive, and state change callback functions.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
The CAN_BUS_UNKNOWN CAN controller state is only used to indicate that
the current CAN controller state could not be read.
Remove it and change the signature of the can_get_state() API function
to return an integer indicating success or failure.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Add optional user data argument to can_set_state_change_callback() to
comply with Zephyr API design guidelines.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Rename a few CAN API functions for clarity and consistency with other
Zephyr RTOS APIs.
CAN_DEFINE_MSGQ() becomes CAN_MSGQ_DEFINE() to match K_MSGQ_DEFINE().
can_attach_isr() becomes can_add_rx_filter() since a filter callback
function is not an interrupt service routine (although it is called in
isr context). The word "attach" is replaced with "add" since filters are
added, not attached. This matches the terminology used is other Zephyr
APIs better.
can_detach() becomes can_remove_rx_filter() to pair with
can_add_rx_filter().
can_attach_msgq() becomes can_add_rx_filter_msgq() and documentation is
updated to mention its relationship with can_add_rx_filter().
can_register_state_change_isr() becomes can_set_state_change_callback()
since a state change callback function is not an interrupt service
routine (although it is called in isr context). The word "register" is
replaced with "set" since only one state change callback can be in
place.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Convert the CAN loopback driver from being configured via Kconfig to
multi-instance configured via devicetree.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Deprecate the use of CAN-specific error return values and replace them
with standard errno values.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Catch up on the CAN driver API argument naming changes:
- Unify naming of callback function pointers as "callback".
- Unify naming of user-specified callback function arguments as
"user_data".
- Instances and pointers to struct zcan_frame are named "frame",
not "msg", to avoid confusion with the CAN message queue support.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
The maximum number of concurrent filters depends on the hardware and
the driver implementation. This API allows the application to obtain
the maximum number of available filters.
Signed-off-by: Martin Jäger <martin@libre.solar>
Refactors all of the CAN drivers to use a shared driver class
initialization priority configuration, CONFIG_CAN_INIT_PRIORITY, to
allow configuring CAN drivers separately from other devices. This is
similar to other driver classes like I2C and SPI.
The default is set to CONFIG_KERNEL_INIT_PRIORITY_DEVICE to preserve the
existing default initialization priority for most drivers. The exception
is the mcp2515 driver which has a dependency on a SPI driver and must
therefore initialize later than the default device priority.
Signed-off-by: Maureen Helm <maureen.helm@intel.com>
socket_can_generic.h makes some assumptions that are not always valid
for various drivers with regards to numbering. To clean this up we
add defines for SOCKET_CAN_NAME_0 and SOCKET_CAN_NAME_2 in addition to
SOCKET_CAN_NAME_1.
We also move struct socket_can_context into the drivers themselves
since they know best how many CAN interfaces are getting supported and
what naming/number convention they'd have.
Additionally, this also exposes a few other build issues with the
can_mcux_flexcan driver that get fixed.
Finally, we remove the platform_allow from samples/net/sockets/can
since it is no longer needed.
Fixes#31733
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Convert driver(s) to DEVICE_DEFINE instead of DEVICE_AND_API_INIT
so we can deprecate DEVICE_AND_API_INIT in the future.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Added tests for the timing algorithm.
The tests calculate timings for some bitrates with sample-points
and verify the results.
Signed-off-by: Alexander Wachter <alexander@wachter.cloud>
Reordering of the struct elements to match the Linux format.
The __packed() is not necessary anymore.
std_id and ext_id is merged to id in the frame and filter.
Additionally, the frames are ready for CAN-FD.
Signed-off-by: Alexander Wachter <alexander@wachter.cloud>
The previous API can't change the sampling-point and only allowed
bitrates that fit the time segments.
The new API allows for shifting the sampling-point and adjusts the
number of time quantum in a bit to all more possible bitrates.
The functions to calculate the timings are moved to the can_common file.
They can be used for all drivers.
Signed-off-by: Alexander Wachter <alexander@wachter.cloud>
Now that device_api attribute is unmodified at runtime, as well as all
the other attributes, it is possible to switch all device driver
instance to be constant.
A coccinelle rule is used for this:
@r_const_dev_1
disable optional_qualifier
@
@@
-struct device *
+const struct device *
@r_const_dev_2
disable optional_qualifier
@
@@
-struct device * const
+const struct device *
Fixes#27399
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Convert all canbus related API/samples/tests/subsys
to the new timeout API with k_timeout_t.
Signed-off-by: Alexander Wachter <alexander@wachter.cloud>
By changing the various *NET_DEVICE* macros. It is up to the device
drivers to either set a proper PM function or, if not supported or PM
disabled, to use device_pm_control_nop relevantly.
All existing macro calls are updated. Since no PM support was added so
far, device_pm_control_nop is used as the default everywhere.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
The loopback driver is a simple driver that can be used to
test CAN subsystems. The actual implementation sends frames
in the same thread that calls the send function.
Some libraries have problems with that behavior.
This PR implements a dedicated thread that calls the callback
for the receiving functions and a msgq in between the sender
and the TX thread.
Signed-off-by: Alexander Wachter <alexander@wachter.cloud>
This commit limits the data length code to eight.
DLC > 8 returns a newly introduced CAN_TX_EINVAL error code.
Signed-off-by: Alexander Wachter <alexander.wachter@student.tugraz.at>
This commit extends the CAN API with the following functions:
- can_get_state
- can_recover
- can_register_state_change_isr
This functions can be used to get the error-counters and the state
of the CAN controller. The recover function can be used to recover
from bus-off state when automatic recovery is disabled.
Signed-off-by: Alexander Wachter <alexander.wachter@student.tugraz.at>
Rename the socket_can implementation from CANBUS to CANBUS_RAW.
This is a preperation for 6LoCAN which is a CANBUS L2 for IPv6.
Signed-off-by: Alexander Wachter <alexander.wachter@student.tugraz.at>
move can.h to drivers/can.h and
create a shim for backward-compatibility.
No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.
Related to #16539
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This commit implements a CAN loopback device. This device is used
for testing when no CAN controller is available on the hardware.
Signed-off-by: Alexander Wachter <alexander.wachter@student.tugraz.at>
