1 # SPDX-License-Identifier: GPL-2.0-only
4 tristate "CAN Device Drivers"
8 Controller Area Network (CAN) is serial communications protocol up to
9 1Mbit/s for its original release (now known as Classical CAN) and up
10 to 8Mbit/s for the more recent CAN with Flexible Data-Rate
11 (CAN-FD). The CAN bus was originally mainly for automotive, but is now
12 widely used in marine (NMEA2000), industrial, and medical
13 applications. More information on the CAN network protocol family
14 PF_CAN is contained in <Documentation/networking/can.rst>.
16 This section contains all the CAN(-FD) device drivers including the
17 virtual ones. If you own such devices or plan to use the virtual CAN
18 interfaces to develop applications, say Y here.
20 To compile as a module, choose M here: the module will be called
26 tristate "Virtual Local CAN Interface (vcan)"
28 Similar to the network loopback devices, vcan offers a
29 virtual local CAN interface.
31 This driver can also be built as a module. If so, the module
35 tristate "Virtual CAN Tunnel (vxcan)"
37 Similar to the virtual ethernet driver veth, vxcan implements a
38 local CAN traffic tunnel between two virtual CAN network devices.
39 When creating a vxcan, two vxcan devices are created as pair.
40 When one end receives the packet it appears on its pair and vice
41 versa. The vxcan can be used for cross namespace communication.
43 In opposite to vcan loopback devices the vxcan only forwards CAN
44 frames to its pair and does *not* provide a local echo of sent
45 CAN frames. To disable a potential echo in af_can.c the vxcan driver
46 announces IFF_ECHO in the interface flags. To have a clean start
47 in each namespace the CAN GW hop counter is set to zero.
49 This driver can also be built as a module. If so, the module
53 bool "CAN device drivers with Netlink support"
56 Enables the common framework for CAN device drivers. This is the
57 standard library and provides features for the Netlink interface such
58 as bittiming validation, support of CAN error states, device restart
61 The additional features selected by this option will be added to the
64 This is required by all platform and hardware CAN drivers. If you
65 plan to use such devices or if unsure, say Y.
69 config CAN_CALC_BITTIMING
70 bool "CAN bit-timing calculation"
73 If enabled, CAN bit-timing parameters will be calculated for the
74 bit-rate specified via Netlink argument "bitrate" when the device
75 get started. This works fine for the most common CAN controllers
76 with standard bit-rates but may fail for exotic bit-rates or CAN
77 source clock frequencies. Disabling saves some space, but then the
78 bit-timing parameters must be specified directly using the Netlink
79 arguments "tq", "prop_seg", "phase_seg1", "phase_seg2" and "sjw".
81 The additional features selected by this option will be added to the
90 tristate "Atmel AT91 onchip CAN controller"
91 depends on (ARCH_AT91 || COMPILE_TEST) && HAS_IOMEM
94 This is a driver for the SoC CAN controller in Atmel's AT91SAM9263
95 and AT91SAM9X5 processors.
98 tristate "STM32 Basic Extended CAN (bxCAN) devices"
99 depends on ARCH_STM32 || COMPILE_TEST
101 select CAN_RX_OFFLOAD
103 Say yes here to build support for the STMicroelectronics STM32 basic
104 extended CAN Controller (bxCAN).
106 This driver can also be built as a module. If so, the module
107 will be called bxcan.
110 tristate "Serial / USB serial ELM327 based OBD-II Interfaces (can327)"
112 select CAN_RX_OFFLOAD
114 CAN driver for several 'low cost' OBD-II interfaces based on the
115 ELM327 OBD-II interpreter chip.
117 This is a best effort driver - the ELM327 interface was never
118 designed to be used as a standalone CAN interface. However, it can
119 still be used for simple request-response protocols (such as OBD II),
120 and to monitor broadcast messages on a bus (such as in a vehicle).
122 Please refer to the documentation for information on how to use it:
123 Documentation/networking/device_drivers/can/can327.rst
125 If this driver is built as a module, it will be called can327.
128 tristate "Support for Freescale FLEXCAN based chips"
129 depends on OF || COLDFIRE || COMPILE_TEST
131 select CAN_RX_OFFLOAD
133 Say Y here if you want to support for Freescale FlexCAN.
136 tristate "Aeroflex Gaisler GRCAN and GRHCAN CAN devices"
137 depends on OF && HAS_DMA && HAS_IOMEM
139 Say Y here if you want to use Aeroflex Gaisler GRCAN or GRHCAN.
140 Note that the driver supports little endian, even though little
141 endian syntheses of the cores would need some modifications on
142 the hardware level to work.
144 config CAN_JANZ_ICAN3
145 tristate "Janz VMOD-ICAN3 Intelligent CAN controller"
146 depends on MFD_JANZ_CMODIO
148 Driver for Janz VMOD-ICAN3 Intelligent CAN controller module, which
149 connects to a MODULbus carrier board.
151 This driver can also be built as a module. If so, the module will be
152 called janz-ican3.ko.
154 config CAN_KVASER_PCIEFD
156 tristate "Kvaser PCIe FD cards"
158 This is a driver for the Kvaser PCI Express CAN FD family.
162 Kvaser PCIEcan 2xHS v2
164 Kvaser PCIEcan 1xCAN v3
165 Kvaser PCIEcan 2xCAN v3
166 Kvaser PCIEcan 4xCAN v2
167 Kvaser Mini PCI Express HS v2
168 Kvaser Mini PCI Express 2xHS v2
169 Kvaser Mini PCI Express 1xCAN v3
170 Kvaser Mini PCI Express 2xCAN v3
171 Kvaser M.2 PCIe 4xCAN
175 tristate "Serial / USB serial CAN Adaptors (slcan)"
178 CAN driver for several 'low cost' CAN interfaces that are attached
179 via serial lines or via USB-to-serial adapters using the LAWICEL
180 ASCII protocol. The driver implements the tty linediscipline N_SLCAN.
182 As only the sending and receiving of CAN frames is implemented, this
183 driver should work with the (serial/USB) CAN hardware from:
184 www.canusb.com / www.can232.com / www.mictronics.de / www.canhack.de
186 Userspace tools to attach the SLCAN line discipline (slcan_attach,
187 slcand) can be found in the can-utils at the linux-can project, see
188 https://github.com/linux-can/can-utils for details.
190 This driver can also be built as a module. If so, the module
191 will be called slcan.
194 tristate "Allwinner A10 CAN controller"
195 depends on MACH_SUN4I || MACH_SUN7I || (RISCV && ARCH_SUNXI) || COMPILE_TEST
197 Say Y here if you want to use CAN controller found on Allwinner
200 To compile this driver as a module, choose M here: the module will
205 tristate "TI High End CAN Controller"
206 select CAN_RX_OFFLOAD
208 Driver for TI HECC (High End CAN Controller) module found on many
209 TI devices. The device specifications are available from www.ti.com
212 tristate "Xilinx CAN"
213 depends on ARCH_ZYNQ || ARM64 || MICROBLAZE || COMPILE_TEST
214 depends on COMMON_CLK && HAS_IOMEM
216 Xilinx CAN driver. This driver supports both soft AXI CAN IP and
219 source "drivers/net/can/c_can/Kconfig"
220 source "drivers/net/can/cc770/Kconfig"
221 source "drivers/net/can/ctucanfd/Kconfig"
222 source "drivers/net/can/esd/Kconfig"
223 source "drivers/net/can/ifi_canfd/Kconfig"
224 source "drivers/net/can/m_can/Kconfig"
225 source "drivers/net/can/mscan/Kconfig"
226 source "drivers/net/can/peak_canfd/Kconfig"
227 source "drivers/net/can/rcar/Kconfig"
228 source "drivers/net/can/rockchip/Kconfig"
229 source "drivers/net/can/sja1000/Kconfig"
230 source "drivers/net/can/softing/Kconfig"
231 source "drivers/net/can/spi/Kconfig"
232 source "drivers/net/can/usb/Kconfig"
236 config CAN_DEBUG_DEVICES
237 bool "CAN devices debugging messages"
239 Say Y here if you want the CAN device drivers to produce a bunch of
240 debug messages to the system log. Select this if you are having
241 a problem with CAN support and want to see more of what is going