# SPDX-License-Identifier: GPL-2.0-only
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menu "CAN Device Drivers"
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config CAN_VCAN
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tristate "Virtual Local CAN Interface (vcan)"
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help
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Similar to the network loopback devices, vcan offers a
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virtual local CAN interface.
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This driver can also be built as a module. If so, the module
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will be called vcan.
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config CAN_VXCAN
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tristate "Virtual CAN Tunnel (vxcan)"
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help
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Similar to the virtual ethernet driver veth, vxcan implements a
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local CAN traffic tunnel between two virtual CAN network devices.
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When creating a vxcan, two vxcan devices are created as pair.
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When one end receives the packet it appears on its pair and vice
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versa. The vxcan can be used for cross namespace communication.
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In opposite to vcan loopback devices the vxcan only forwards CAN
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frames to its pair and does *not* provide a local echo of sent
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CAN frames. To disable a potential echo in af_can.c the vxcan driver
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announces IFF_ECHO in the interface flags. To have a clean start
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in each namespace the CAN GW hop counter is set to zero.
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This driver can also be built as a module. If so, the module
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will be called vxcan.
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config CAN_SLCAN
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tristate "Serial / USB serial CAN Adaptors (slcan)"
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depends on TTY
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help
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CAN driver for several 'low cost' CAN interfaces that are attached
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via serial lines or via USB-to-serial adapters using the LAWICEL
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ASCII protocol. The driver implements the tty linediscipline N_SLCAN.
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As only the sending and receiving of CAN frames is implemented, this
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driver should work with the (serial/USB) CAN hardware from:
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www.canusb.com / www.can232.com / www.mictronics.de / www.canhack.de
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Userspace tools to attach the SLCAN line discipline (slcan_attach,
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slcand) can be found in the can-utils at the linux-can project, see
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https://github.com/linux-can/can-utils for details.
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The slcan driver supports up to 10 CAN netdevices by default which
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can be changed by the 'maxdev=xx' module option. This driver can
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also be built as a module. If so, the module will be called slcan.
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config CAN_DEV
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tristate "Platform CAN drivers with Netlink support"
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default y
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help
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Enables the common framework for platform CAN drivers with Netlink
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support. This is the standard library for CAN drivers.
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If unsure, say Y.
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if CAN_DEV
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config CAN_CALC_BITTIMING
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bool "CAN bit-timing calculation"
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default y
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help
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If enabled, CAN bit-timing parameters will be calculated for the
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bit-rate specified via Netlink argument "bitrate" when the device
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get started. This works fine for the most common CAN controllers
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with standard bit-rates but may fail for exotic bit-rates or CAN
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source clock frequencies. Disabling saves some space, but then the
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bit-timing parameters must be specified directly using the Netlink
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arguments "tq", "prop_seg", "phase_seg1", "phase_seg2" and "sjw".
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If unsure, say Y.
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config CAN_LEDS
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bool "Enable LED triggers for Netlink based drivers"
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depends on LEDS_CLASS
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# The netdev trigger (LEDS_TRIGGER_NETDEV) should be able to do
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# everything that this driver is doing. This is marked as broken
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# because it uses stuff that is intended to be changed or removed.
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# Please consider switching to the netdev trigger and confirm it
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# fulfills your needs instead of fixing this driver.
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depends on BROKEN
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select LEDS_TRIGGERS
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help
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This option adds two LED triggers for packet receive and transmit
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events on each supported CAN device.
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Say Y here if you are working on a system with led-class supported
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LEDs and you want to use them as canbus activity indicators.
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config CAN_AT91
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tristate "Atmel AT91 onchip CAN controller"
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depends on (ARCH_AT91 || COMPILE_TEST) && HAS_IOMEM
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help
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This is a driver for the SoC CAN controller in Atmel's AT91SAM9263
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and AT91SAM9X5 processors.
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config CAN_FLEXCAN
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tristate "Support for Freescale FLEXCAN based chips"
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depends on OF && HAS_IOMEM
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help
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Say Y here if you want to support for Freescale FlexCAN.
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config CAN_GRCAN
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tristate "Aeroflex Gaisler GRCAN and GRHCAN CAN devices"
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depends on OF && HAS_DMA
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help
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Say Y here if you want to use Aeroflex Gaisler GRCAN or GRHCAN.
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Note that the driver supports little endian, even though little
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endian syntheses of the cores would need some modifications on
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the hardware level to work.
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config CAN_JANZ_ICAN3
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tristate "Janz VMOD-ICAN3 Intelligent CAN controller"
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depends on MFD_JANZ_CMODIO
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help
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Driver for Janz VMOD-ICAN3 Intelligent CAN controller module, which
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connects to a MODULbus carrier board.
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This driver can also be built as a module. If so, the module will be
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called janz-ican3.ko.
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config CAN_KVASER_PCIEFD
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depends on PCI
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tristate "Kvaser PCIe FD cards"
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select CRC32
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help
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This is a driver for the Kvaser PCI Express CAN FD family.
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Supported devices:
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Kvaser PCIEcan 4xHS
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Kvaser PCIEcan 2xHS v2
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Kvaser PCIEcan HS v2
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Kvaser Mini PCI Express HS v2
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Kvaser Mini PCI Express 2xHS v2
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config CAN_SUN4I
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tristate "Allwinner A10 CAN controller"
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depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
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help
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Say Y here if you want to use CAN controller found on Allwinner
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A10/A20 SoCs.
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To compile this driver as a module, choose M here: the module will
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be called sun4i_can.
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config CAN_TI_HECC
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depends on ARM
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tristate "TI High End CAN Controller"
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help
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Driver for TI HECC (High End CAN Controller) module found on many
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TI devices. The device specifications are available from www.ti.com
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config CAN_XILINXCAN
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tristate "Xilinx CAN"
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depends on ARCH_ZYNQ || ARM64 || MICROBLAZE || COMPILE_TEST
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depends on COMMON_CLK && HAS_IOMEM
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help
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Xilinx CAN driver. This driver supports both soft AXI CAN IP and
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Zynq CANPS IP.
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config PCH_CAN
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tristate "Intel EG20T PCH CAN controller"
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depends on PCI && (X86_32 || COMPILE_TEST)
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help
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This driver is for PCH CAN of Topcliff (Intel EG20T PCH) which
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is an IOH for x86 embedded processor (Intel Atom E6xx series).
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This driver can access CAN bus.
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source "drivers/net/can/c_can/Kconfig"
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source "drivers/net/can/cc770/Kconfig"
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source "drivers/net/can/ifi_canfd/Kconfig"
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source "drivers/net/can/m_can/Kconfig"
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source "drivers/net/can/mscan/Kconfig"
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source "drivers/net/can/peak_canfd/Kconfig"
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source "drivers/net/can/rcar/Kconfig"
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source "drivers/net/can/rockchip/Kconfig"
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source "drivers/net/can/sja1000/Kconfig"
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source "drivers/net/can/softing/Kconfig"
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source "drivers/net/can/spi/Kconfig"
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source "drivers/net/can/usb/Kconfig"
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endif
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config CAN_DEBUG_DEVICES
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bool "CAN devices debugging messages"
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help
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Say Y here if you want the CAN device drivers to produce a bunch of
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debug messages to the system log. Select this if you are having
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a problem with CAN support and want to see more of what is going
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on.
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endmenu
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