Refactor the Bosch M_CAN shared driver functions to get rid of the
front-end driver wrapper functions.
This requires flipping the relationship between shared config/data
structs and front-end config/data structs. Front-end drivers can now
store a pointer to their custom config/data structs in the .custom
fields of the can_mcan_config and can_mcan_data data structures.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Rename the private header file for the Bosch M_CAN shared driver code
from can_mcan_int.h to can_mcan_priv.h to follow the common naming
scheme.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Only add the filter ID offset for extended CAN-ID filters if the filter
was added successfully. Raise log level from info to warning if filter
addition failed but only log it once.
Fix bounds check for removing an extended CAN-ID filter.
Fixes: #44721
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Fix the bounds check for the data phase prescaler timing parameter. The
maximum allowed value is 0x20, not 20 decimal.
Fixes: #44483
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Take CAN_SJW_NO_CHANGE into account when bounds checking the sjw timing
parameter values.
Fixes: #44482
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Fix the signature of the CAN bus recovery functions in the Bosch M_CAN
driver frontends.
Fixes: #44345
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
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>
Add generic support for can_get_max_filters() to the Bosch M_CAN
base driver and use it in all driver frontends.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Switch the Bosch M_CAN driver from TX FIFO mode to TX Queue mode in
order to avoid priority inversion of CAN frames.
Fixes: #26541
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Set enable configuration change bit in can_mcan_set_timing() because
the NBTP register can only be changed if we're in init mode AND
configuration change bit is set, per MCU docs.
Signed-off-by: Jeremy Wood <jeremy@bcdevices.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>
* New m_can driver variant for STM32H7, as it uses the complete m_can
register set.
* Fix definitions for CAN_MCAN_RXF0S_F0FL, CAN_MCAN_TXEFC_EFSA_POS.
Signed-off-by: Jeremy Wood <jeremy@bcdevices.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>
The msg_sram resides in the sram region, where the
m_can controller direcly access it. Whenever the driver
writes to the msg_sram and operations are triggered, the
cache needs to be invalidated.
Signed-off-by: Alexander Wachter <alexander@wachter.cloud>
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 data-sjw value was incorrectly written to the NBTP register when it
should be written to the DBTP register.
This fixes a regression introduced by
5e0ca9b41e.
Signed-off-by: Christoph Steiger <c.steiger@lemonage.de>
If the supplied sjw in the timing parameters is zero,
the sjw parameter should not be changed.
This fixes the uninitialized swj in can_set_bitrate.
Signed-off-by: Alexander Wachter <alexander@wachter.cloud>
Implementation of the Bosch M_CAN IP driver.
This driver is just the base for a specific SoC implementation.
Signed-off-by: Alexander Wachter <alexander@wachter.cloud>
