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 select CAN_RX_OFFLOAD 93 help 94 This is a driver for the SoC CAN controller in Atmel's AT91SAM9263 95 and AT91SAM9X5 processors. 96 97config CAN_BXCAN 98 tristate "STM32 Basic Extended CAN (bxCAN) devices" 99 depends on ARCH_STM32 || COMPILE_TEST 100 depends on HAS_IOMEM 101 select CAN_RX_OFFLOAD 102 help 103 Say yes here to build support for the STMicroelectronics STM32 basic 104 extended CAN Controller (bxCAN). 105 106 This driver can also be built as a module. If so, the module 107 will be called bxcan. 108 109config CAN_CAN327 110 tristate "Serial / USB serial ELM327 based OBD-II Interfaces (can327)" 111 depends on TTY 112 select CAN_RX_OFFLOAD 113 help 114 CAN driver for several 'low cost' OBD-II interfaces based on the 115 ELM327 OBD-II interpreter chip. 116 117 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). 121 122 Please refer to the documentation for information on how to use it: 123 Documentation/networking/device_drivers/can/can327.rst 124 125 If this driver is built as a module, it will be called can327. 126 127config CAN_FLEXCAN 128 tristate "Support for Freescale FLEXCAN based chips" 129 depends on OF || COLDFIRE || COMPILE_TEST 130 depends on HAS_IOMEM 131 select CAN_RX_OFFLOAD 132 help 133 Say Y here if you want to support for Freescale FlexCAN. 134 135config CAN_GRCAN 136 tristate "Aeroflex Gaisler GRCAN and GRHCAN CAN devices" 137 depends on OF && HAS_DMA && HAS_IOMEM 138 help 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. 143 144config CAN_JANZ_ICAN3 145 tristate "Janz VMOD-ICAN3 Intelligent CAN controller" 146 depends on MFD_JANZ_CMODIO 147 help 148 Driver for Janz VMOD-ICAN3 Intelligent CAN controller module, which 149 connects to a MODULbus carrier board. 150 151 This driver can also be built as a module. If so, the module will be 152 called janz-ican3.ko. 153 154config CAN_KVASER_PCIEFD 155 depends on PCI 156 tristate "Kvaser PCIe FD cards" 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 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 172 Kvaser PCIe 8xCAN 173 174config CAN_SLCAN 175 tristate "Serial / USB serial CAN Adaptors (slcan)" 176 depends on TTY 177 help 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. 181 182 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 185 186 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. 189 190 The slcan driver supports up to 10 CAN netdevices by default which 191 can be changed by the 'maxdev=xx' module option. This driver can 192 also be built as a module. If so, the module will be called slcan. 193 194config CAN_SUN4I 195 tristate "Allwinner A10 CAN controller" 196 depends on MACH_SUN4I || MACH_SUN7I || (RISCV && ARCH_SUNXI) || COMPILE_TEST 197 help 198 Say Y here if you want to use CAN controller found on Allwinner 199 A10/A20/D1 SoCs. 200 201 To compile this driver as a module, choose M here: the module will 202 be called sun4i_can. 203 204config CAN_TI_HECC 205 depends on ARM 206 tristate "TI High End CAN Controller" 207 select CAN_RX_OFFLOAD 208 help 209 Driver for TI HECC (High End CAN Controller) module found on many 210 TI devices. The device specifications are available from www.ti.com 211 212config CAN_XILINXCAN 213 tristate "Xilinx CAN" 214 depends on ARCH_ZYNQ || ARM64 || MICROBLAZE || COMPILE_TEST 215 depends on COMMON_CLK && HAS_IOMEM 216 help 217 Xilinx CAN driver. This driver supports both soft AXI CAN IP and 218 Zynq CANPS IP. 219 220source "drivers/net/can/c_can/Kconfig" 221source "drivers/net/can/cc770/Kconfig" 222source "drivers/net/can/ctucanfd/Kconfig" 223source "drivers/net/can/esd/Kconfig" 224source "drivers/net/can/ifi_canfd/Kconfig" 225source "drivers/net/can/m_can/Kconfig" 226source "drivers/net/can/mscan/Kconfig" 227source "drivers/net/can/peak_canfd/Kconfig" 228source "drivers/net/can/rcar/Kconfig" 229source "drivers/net/can/sja1000/Kconfig" 230source "drivers/net/can/softing/Kconfig" 231source "drivers/net/can/spi/Kconfig" 232source "drivers/net/can/usb/Kconfig" 233 234endif #CAN_NETLINK 235 236config CAN_DEBUG_DEVICES 237 bool "CAN devices debugging messages" 238 help 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 242 on. 243 244endif #CAN_DEV 245