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path: root/drivers/soc/apple/rtkit-internal.h
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2023-11-23soc: apple: rtkit: Port to the internal mailbox driverHector Martin
Now that we have a mailbox driver in drivers/soc/apple, port the RTKit code to it. This mostly just entails replacing calls through the mailbox subsystem with direct calls into the driver. Acked-by: Eric Curtin <ecurtin@redhat.com> Acked-by: Neal Gompa <neal@gompa.dev> Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Signed-off-by: Hector Martin <marcan@marcan.st>
2022-05-01soc: apple: Add RTKit IPC librarySven Peter
Apple SoCs such as the M1 come with multiple embedded co-processors running proprietary firmware. Communication with those is established over a simple mailbox using the RTKit IPC protocol. This cannot be implemented inside the mailbox subsystem since on top of communication over channels we also need support for starting, hibernating and resetting these co-processors. We also need to handle shared memory allocations differently depending on the co-processor and don't want to split that across multiple drivers. Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Sven Peter <sven@svenpeter.dev>