qcom-rtss-can: add recipe for RTSS CAN userspace deamon#2644
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daemon The RTSS subsystem on Qualcomm SoCs includes a dedicated CAN controller that is not directly accessible from the Linux CAN stack. This recipe builds rtss_can, a userspace daemon that bridges that gap by routing traffic between Linux SocketCAN virtual interfaces and RTSS mailbox channels, allowing standard SocketCAN applications to communicate with CAN hardware managed by RTSS. The daemon depends on qcom-rtss-mailbox-umd for the librtss_mailbox interface and on linux-libc-headers for the SocketCAN kernel UAPI headers (linux/can.h, linux/can/raw.h). Active CAN controller count is configured per MACHINE at build time and injected into rtss_can.conf during install. Tested on: iq-9075-evk Signed-off-by: q-AnupKulkarni <anupkulk@qti.qualcomm.com>
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Depends on #2528 |
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Dmitry Baryshkov (lumag)
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Jun 28, 2026
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This is what we talked about earlier, uAPI. Don't invent extra API. Provide the standard uAPI. Linux has AF_CAN. As such, if you want to provide CAN support, hook into the existing subsytem instead of providing something new.
This is NAK from my side.
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To point out, provide AF_CAN by the kernel, there should be no need for the extra userspace bridges. |
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Add a BitBake recipe for the RTSS CAN userspace daemon. This daemon acts
as a gateway between SocketCAN applications and the RTSS subsystem using
the RTSS mailbox UMD libraries (qcom-rtss-mailbox-umd).
Depends on qcom-rtss-mailbox-umd for librtss_mailbox.so and on
linux-libc-headers for linux/can.h and linux/can/raw.h.
Tested on: iq-9075-evk