1# SPDX-License-Identifier: GPL-2.0-only 2 3menuconfig CAN_DEV 4 tristate "CAN Device Drivers" 5 default y 6 depends on CAN 7 help 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>. 15 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. 19 20 To compile as a module, choose M here: the module will be called 21 can-dev. 22 23if CAN_DEV 24 25config CAN_VCAN 26 tristate "Virtual Local CAN Interface (vcan)" 27 help 28 Similar to the network loopback devices, vcan offers a 29 virtual local CAN interface. 30 31 This driver can also be built as a module. If so, the module 32 will be called vcan. 33 34config CAN_VXCAN 35 tristate "Virtual CAN Tunnel (vxcan)" 36 help 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. 42 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. 48 49 This driver can also be built as a module. If so, the module 50 will be called vxcan. 51 52config CAN_NETLINK 53 bool "CAN device drivers with Netlink support" 54 default y 55 help 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 59 and others. 60 61 The additional features selected by this option will be added to the 62 can-dev module. 63 64 This is required by all platform and hardware CAN drivers. If you 65 plan to use such devices or if unsure, say Y. 66 67if CAN_NETLINK 68 69config CAN_CALC_BITTIMING 70 bool "CAN bit-timing calculation" 71 default y 72 help 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". 80 81 The additional features selected by this option will be added to the 82 can-dev module. 83 84 If unsure, say Y. 85 86config CAN_RX_OFFLOAD 87 bool 88 89config CAN_AT91 90 tristate "Atmel AT91 onchip CAN controller" 91 depends on (ARCH_AT91 || COMPILE_TEST) && HAS_IOMEM 92 help 93 This is a driver for the SoC CAN controller in Atmel's AT91SAM9263 94 and AT91SAM9X5 processors. 95 96config CAN_BXCAN 97 tristate "STM32 Basic Extended CAN (bxCAN) devices" 98 depends on ARCH_STM32 || COMPILE_TEST 99 depends on HAS_IOMEM 100 select CAN_RX_OFFLOAD 101 help 102 Say yes here to build support for the STMicroelectronics STM32 basic 103 extended CAN Controller (bxCAN). 104 105 This driver can also be built as a module. If so, the module 106 will be called bxcan. 107 108config CAN_CAN327 109 tristate "Serial / USB serial ELM327 based OBD-II Interfaces (can327)" 110 depends on TTY 111 select CAN_RX_OFFLOAD 112 help 113 CAN driver for several 'low cost' OBD-II interfaces based on the 114 ELM327 OBD-II interpreter chip. 115 116 This is a best effort driver - the ELM327 interface was never 117 designed to be used as a standalone CAN interface. However, it can 118 still be used for simple request-response protocols (such as OBD II), 119 and to monitor broadcast messages on a bus (such as in a vehicle). 120 121 Please refer to the documentation for information on how to use it: 122 Documentation/networking/device_drivers/can/can327.rst 123 124 If this driver is built as a module, it will be called can327. 125 126config CAN_FLEXCAN 127 tristate "Support for Freescale FLEXCAN based chips" 128 depends on OF || COLDFIRE || COMPILE_TEST 129 depends on HAS_IOMEM 130 select CAN_RX_OFFLOAD 131 help 132 Say Y here if you want to support for Freescale FlexCAN. 133 134config CAN_GRCAN 135 tristate "Aeroflex Gaisler GRCAN and GRHCAN CAN devices" 136 depends on OF && HAS_DMA && HAS_IOMEM 137 help 138 Say Y here if you want to use Aeroflex Gaisler GRCAN or GRHCAN. 139 Note that the driver supports little endian, even though little 140 endian syntheses of the cores would need some modifications on 141 the hardware level to work. 142 143config CAN_JANZ_ICAN3 144 tristate "Janz VMOD-ICAN3 Intelligent CAN controller" 145 depends on MFD_JANZ_CMODIO 146 help 147 Driver for Janz VMOD-ICAN3 Intelligent CAN controller module, which 148 connects to a MODULbus carrier board. 149 150 This driver can also be built as a module. If so, the module will be 151 called janz-ican3.ko. 152 153config CAN_KVASER_PCIEFD 154 depends on PCI 155 tristate "Kvaser PCIe FD cards" 156 select CRC32 157 help 158 This is a driver for the Kvaser PCI Express CAN FD family. 159 160 Supported devices: 161 Kvaser PCIEcan 4xHS 162 Kvaser PCIEcan 2xHS v2 163 Kvaser PCIEcan HS v2 164 Kvaser Mini PCI Express HS v2 165 Kvaser Mini PCI Express 2xHS v2 166 167config CAN_SLCAN 168 tristate "Serial / USB serial CAN Adaptors (slcan)" 169 depends on TTY 170 help 171 CAN driver for several 'low cost' CAN interfaces that are attached 172 via serial lines or via USB-to-serial adapters using the LAWICEL 173 ASCII protocol. The driver implements the tty linediscipline N_SLCAN. 174 175 As only the sending and receiving of CAN frames is implemented, this 176 driver should work with the (serial/USB) CAN hardware from: 177 www.canusb.com / www.can232.com / www.mictronics.de / www.canhack.de 178 179 Userspace tools to attach the SLCAN line discipline (slcan_attach, 180 slcand) can be found in the can-utils at the linux-can project, see 181 https://github.com/linux-can/can-utils for details. 182 183 The slcan driver supports up to 10 CAN netdevices by default which 184 can be changed by the 'maxdev=xx' module option. This driver can 185 also be built as a module. If so, the module will be called slcan. 186 187config CAN_SUN4I 188 tristate "Allwinner A10 CAN controller" 189 depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST 190 help 191 Say Y here if you want to use CAN controller found on Allwinner 192 A10/A20 SoCs. 193 194 To compile this driver as a module, choose M here: the module will 195 be called sun4i_can. 196 197config CAN_TI_HECC 198 depends on ARM 199 tristate "TI High End CAN Controller" 200 select CAN_RX_OFFLOAD 201 help 202 Driver for TI HECC (High End CAN Controller) module found on many 203 TI devices. The device specifications are available from www.ti.com 204 205config CAN_XILINXCAN 206 tristate "Xilinx CAN" 207 depends on ARCH_ZYNQ || ARM64 || MICROBLAZE || COMPILE_TEST 208 depends on COMMON_CLK && HAS_IOMEM 209 help 210 Xilinx CAN driver. This driver supports both soft AXI CAN IP and 211 Zynq CANPS IP. 212 213source "drivers/net/can/c_can/Kconfig" 214source "drivers/net/can/cc770/Kconfig" 215source "drivers/net/can/ctucanfd/Kconfig" 216source "drivers/net/can/ifi_canfd/Kconfig" 217source "drivers/net/can/m_can/Kconfig" 218source "drivers/net/can/mscan/Kconfig" 219source "drivers/net/can/peak_canfd/Kconfig" 220source "drivers/net/can/rcar/Kconfig" 221source "drivers/net/can/sja1000/Kconfig" 222source "drivers/net/can/softing/Kconfig" 223source "drivers/net/can/spi/Kconfig" 224source "drivers/net/can/usb/Kconfig" 225 226endif #CAN_NETLINK 227 228config CAN_DEBUG_DEVICES 229 bool "CAN devices debugging messages" 230 help 231 Say Y here if you want the CAN device drivers to produce a bunch of 232 debug messages to the system log. Select this if you are having 233 a problem with CAN support and want to see more of what is going 234 on. 235 236endif #CAN_DEV 237