1

I have a Holt HI-3110 chip that implements a CAN bus interface that is run over an SPI host interface. A driver for the chip is in the Linux mainline (in /drivers/net/can/spi). I'm targeting a host platform with no SPI host interface, so I've installed a Microchip MCP2210 USB-to-SPI bridge that is also supported in the Linux mainline (in /drivers/hid). Banging on the /dev/hidraw0 device from user code seems to work fine.

I assume I need to convert the SPI driver to a platform driver that looks for the correct hid driver and uses it to get to the CAN chip. Can someone point me to a driver that does something similar (using another driver to get to a device)?

New contributor
Dc Designs is a new contributor to this site. Take care in asking for clarification, commenting, and answering. Check out our Code of Conduct.
  • You mean you want to connect USB to SPI to CAN, when there are USB to CAN adapters? – sawdust Jan 10 at 8:16
  • E.g.: Bluetooth has several transport drivers, as does HID itself (e.g. HID over I2C as opposed over USB). I am not sure if there's a "standard" way in the kernel to do this. – dirkt Jan 12 at 13:04

Your Answer

Dc Designs is a new contributor. Be nice, and check out our Code of Conduct.

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Browse other questions tagged or ask your own question.