meta-agl-demo - meta-agl-demo layer (demo/staging/"one-shot")

Age	Commit message (Expand)	Author	Files	Lines
2020-12-17	SPEC-3723: restructure meta-agl-demo	Jan-Simon Moeller	1	-0/+1

# DRM lease support layer This yocto layer adds support for using DRM leases to partition display controller output resources between multiple processes. This layer adds a drm-lease-manager deamon (with systemd configuration) and a client library for receiving DRM leases from the daemon. For more details the DRM lease manager and client see the repository at (https://gerrit.automotivelinux.org/gerrit/gitweb?p=src/drm-lease-manager.git) ## Setup Enable the `agl-drm-lease` AGL feature when setting up your build environment with aglsetup.sh. This will add the `drm-lease-manager` package to the image, and will add DRM lease support to the following packages: * weston * kmscube `kmscube` is not included in the image by default. To add the package to the image, add the following to your local.conf ``` IMAGE_INSTALL:append = " kmscube" ``` ## Starting the DRM lease manager The drm-lease-manager must be the only process to directly open the DRM device. Shut down any running window systems (eg. weston or agl-compositor) and run: ``` # systemctl start drm-lease-manager ``` This will create 1 lease for each output connection on the platform. The name of each lease will be in the form of `card0-<output name>` (eg. `card0-LVDS-1` or `card0-HDMI-A-1`) ## Running weston weston can be started on any available DRM lease by running with the `--drm-lease=<lease name>` option. Eg: ``` # weston --drm-lease=card0-HDMI-A-1 ``` ## Running kmscube sample With the `drm-lease-manager` running `kmscube` can display on any available lease by running with the `-L -D<lease name>` options. Eg: ``` # kmscube -L -Dcard0-HDMI-A-1 ``` Multiple kmscube instances (one per DRM lease) can be started at the same time. ## Tested targets This layer has been tested on the Renesas R-Car Gen3 platform. Other platforms supporting the Linux DRM API may work as well. maintainer: agl-dev-community@lists.automotivelinux.org patch: agl-dev-community@lists.automotivelinux.org