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| author | Maximilian Luz <luzmaximilian@gmail.com> | 2020-12-21 19:39:58 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2021-01-07 00:06:39 +0100 |
| commit | 178f6ab77e617c984d6520b92e747075a12676ff (patch) | |
| tree | 854f50b2ce73d3384dc268be6f5476e42c4b6b73 /drivers/platform/surface/Kconfig | |
| parent | 8d7792823da4abd799d63aaceb23805203a5419e (diff) | |
| download | linux-stable-178f6ab77e617c984d6520b92e747075a12676ff.tar.gz linux-stable-178f6ab77e617c984d6520b92e747075a12676ff.tar.bz2 linux-stable-178f6ab77e617c984d6520b92e747075a12676ff.zip | |
platform/surface: Add Surface Aggregator user-space interface
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>
Diffstat (limited to 'drivers/platform/surface/Kconfig')
| -rw-r--r-- | drivers/platform/surface/Kconfig | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/platform/surface/Kconfig b/drivers/platform/surface/Kconfig index 2916a47b130e..988b2de6b500 100644 --- a/drivers/platform/surface/Kconfig +++ b/drivers/platform/surface/Kconfig @@ -41,6 +41,23 @@ config SURFACE_3_POWER_OPREGION This driver provides support for ACPI operation region of the Surface 3 battery platform driver. +config SURFACE_AGGREGATOR_CDEV + tristate "Surface System Aggregator Module User-Space Interface" + depends on SURFACE_AGGREGATOR + help + Provides a misc-device interface to the Surface System Aggregator + Module (SSAM) controller. + + This option provides a module (called surface_aggregator_cdev), that, + when loaded, will add a client device (and its respective driver) to + the SSAM controller. Said client device manages a misc-device + interface (/dev/surface/aggregator), which can be used by user-space + tools to directly communicate with the SSAM EC by sending requests and + receiving the corresponding responses. + + The provided interface is intended for debugging and development only, + and should not be used otherwise. + config SURFACE_GPE tristate "Surface GPE/Lid Support Driver" depends on DMI |