docs: driver-api: Update Surface Aggregator user-space interface documentation

2021-06-16T15:47:53Z

Update the controller-device user-space interface (cdev) documentation for the newly introduced IOCTLs and event interface. Signed-off-by: Maximilian Luz Reviewed-by: Hans de Goede Link: https://lore.kernel.org/r/20210604134755.535590-8-luzmaximilian@gmail.com Signed-off-by: Hans de Goede

platform/surface: Add Surface Aggregator user-space interface

2021-01-06T23:06:39Z

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 Link: https://lore.kernel.org/r/20201221183959.1186143-9-luzmaximilian@gmail.com Signed-off-by: Hans de Goede

kernel/Documentation/driver-api/surface_aggregator/clients/cdev.rst, branch linux-rolling-stable

docs: driver-api: Update Surface Aggregator user-space interface documentation

platform/surface: Add Surface Aggregator user-space interface