The intention of this series is to kick off a discussion about how to support LIN (ISO 17987) [0] in Linux. This series consist of two patches which are two individual proposals for adding LIN abstraction into the kernel. One approach is to add LIN ontop of CANFD: [RFC] can: introduce LIN abstraction The other approach is adding a new type of CAN-socket: [RFC] can: Add LIN proto skeleton These patches are abstracting LIN so that actual device drivers can make use of it. For reference, the LIN-ontop-of-CANFD variant already has a device driver using it (not part of this series). It is a specially built USB LIN-BUS adapter hardware called hexLIN [1]. Its purpose is mainly to test, adapt and discuss different LIN APIs for mainline Linux kernel. But it can already be used productively as a Linux LIN node in controller (master) and responder (slave) mode. By sysfs, hexLIN supports different checksum calculations and setting up a responder-table. For more info about hexLIN, see link below [1]. We are looking for partners with Linux based LIN projects for funding. [0]: https://en.wikipedia.org/wiki/Local_Interconnect_Network [1]: https://hexdev.de/hexlin/ Christoph Fritz (1): [RFC] can: Introduce LIN bus as CANFD abstraction Richard Weinberger (1): [RFC] can: Add LIN proto skeleton drivers/net/can/Kconfig | 10 ++ drivers/net/can/Makefile | 1 + drivers/net/can/lin.c | 181 +++++++++++++++++++++++++++ include/net/lin.h | 30 +++++ include/uapi/linux/can.h | 8 +- include/uapi/linux/can/lin.h | 15 +++ include/uapi/linux/can/netlink.h | 1 + net/can/Kconfig | 5 + net/can/Makefile | 3 + net/can/lin.c | 207 +++++++++++++++++++++++++++++++ 10 files changed, 460 insertions(+), 1 deletion(-) create mode 100644 drivers/net/can/lin.c create mode 100644 include/net/lin.h create mode 100644 include/uapi/linux/can/lin.h create mode 100644 net/can/lin.c -- 2.30.2
