a57db0ddcb
Since all CAN controllers drivers seem to support automatic recovery (for any future drivers for hardware without this hardware capability this can easily be implemented in the driver), change the Zephyr CAN controller API policy to: - Always enable automatic bus recovery upon driver initialization, regardless of Kconfig options. Since CAN controllers are initialized in "stopped" state, no unwanted bus-off recovery will be started at this point. - Invert and rename the Kconfig CONFIG_CAN_AUTO_BUS_OFF_RECOVERY, which is enabled by default, to CONFIG_CAN_MANUAL_RECOVERY_MODE, which is disabled by default. Enabling CONFIG_CAN_MANUAL_RECOVERY_MODE=y enables support for the can_recover() API function and a new manual recovery mode (see next bullet). Keeping this guarded by Kconfig allows keeping the flash footprint down for applications not using manual bus-off recovery. - Introduce a new CAN controller operational mode CAN_MODE_MANUAL_RECOVERY. Support for this is only enabled if CONFIG_CAN_MANUAL_RECOVERY_MODE=y. Having this as a mode allows applications to inquire whether the CAN controller supports manual recovery mode via the can_get_capabilities() API function and either fail or rely on automatic recovery - and it allows CAN controller drivers not supporting manual recovery mode to fail early in can_set_mode() during application startup instead of failing when can_recover() is called at a later point in time. Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
113 lines
2.9 KiB
Plaintext
113 lines
2.9 KiB
Plaintext
# CAN configuration options
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# Copyright (c) 2018 Alexander Wachter
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# SPDX-License-Identifier: Apache-2.0
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#
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# CAN options
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#
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menuconfig CAN
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bool "Controller Area Network (CAN) drivers"
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help
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Enable CAN Driver Configuration
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if CAN
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module = CAN
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module-str = CAN
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source "subsys/logging/Kconfig.template.log_config"
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config CAN_INIT_PRIORITY
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int "CAN driver init priority"
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default 80
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help
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CAN driver device initialization priority.
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config CAN_SHELL
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bool "CAN shell"
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depends on SHELL
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select POLL
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help
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Enable CAN Shell for testing.
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if CAN_SHELL
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config CAN_SHELL_TX_QUEUE_SIZE
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int "CAN shell transmit queue size"
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default 5
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range 1 256
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help
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Maximum number of events in the CAN shell transmit queue.
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config CAN_SHELL_RX_QUEUE_SIZE
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int "CAN shell receive queue size"
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default 5
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range 1 256
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help
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Maximum number of CAN frames in the CAN shell receive queue.
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endif # CAN_SHELL
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config CAN_STATS
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bool "CAN controller device statistics"
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depends on STATS
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help
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Enable CAN controller device statistics.
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config CAN_ACCEPT_RTR
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bool "Accept Remote Transmission Requests (RTR) frames"
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help
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Accept incoming Remote Transmission Request (RTR) frames matching CAN RX filters. Unless
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enabled, all incoming Remote Transmission Request (RTR) frames are rejected at the driver
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level.
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config CAN_FD_MODE
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bool "CAN FD support"
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help
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Enable CAN FD support. Not all CAN controllers support CAN FD.
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config CAN_MANUAL_RECOVERY_MODE
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bool "Manual bus-off recovery support"
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help
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Enable support for manual (non-automatic) recovery from bus-off state. Not all CAN
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controllers support manual recovery mode.
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config CAN_RX_TIMESTAMP
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bool "Receiving timestamps"
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help
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This option enables a timestamp value of the CAN free running timer.
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The value is incremented every bit time and starts when the controller
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is initialized. Not all CAN controllers support timestamps.
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config CAN_QEMU_IFACE_NAME
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string "SocketCAN interface name for QEMU"
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default ""
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depends on QEMU_TARGET
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help
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The SocketCAN interface name for QEMU. This value, if set, is given as "if" parameter to
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the "-object can-host-socketcan" qemu command line option. The CAN interface must be
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configured before starting QEMU.
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source "drivers/can/Kconfig.sam"
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source "drivers/can/Kconfig.sam0"
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source "drivers/can/Kconfig.stm32"
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source "drivers/can/Kconfig.mcux"
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source "drivers/can/Kconfig.mcp2515"
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source "drivers/can/Kconfig.mcan"
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source "drivers/can/Kconfig.rcar"
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source "drivers/can/Kconfig.numaker"
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source "drivers/can/Kconfig.loopback"
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source "drivers/can/Kconfig.native_linux"
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source "drivers/can/Kconfig.sja1000"
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source "drivers/can/Kconfig.esp32"
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source "drivers/can/Kconfig.kvaser"
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source "drivers/can/Kconfig.fake"
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source "drivers/can/Kconfig.nxp_s32"
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source "drivers/can/Kconfig.tcan4x5x"
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source "drivers/can/Kconfig.mcp251xfd"
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source "drivers/can/Kconfig.xmc4xxx"
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source "drivers/can/transceiver/Kconfig"
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endif # CAN
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