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2021-06-16docs: driver-api: Update Surface Aggregator user-space interface documentationMaximilian Luz
Update the controller-device user-space interface (cdev) documentation for the newly introduced IOCTLs and event interface. Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20210604134755.535590-8-luzmaximilian@gmail.com Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2021-01-07platform/surface: Add Surface Aggregator user-space interfaceMaximilian Luz
Add a misc-device providing user-space access to the Surface Aggregator EC, mainly intended for debugging, testing, and reverse-engineering. This interface gives user-space applications the ability to send requests to the EC and receive the corresponding responses. The device-file is managed by a pseudo platform-device and corresponding driver to avoid dependence on the dedicated bus, allowing it to be loaded in a minimal configuration. A python library and scripts to access this device can be found at [1]. [1]: https://github.com/linux-surface/surface-aggregator-module/tree/master/scripts/ssam Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com> Link: https://lore.kernel.org/r/20201221183959.1186143-9-luzmaximilian@gmail.com Signed-off-by: Hans de Goede <hdegoede@redhat.com>