Add a userspace interface for providing access to the memory syncpoint
shim through dma-buf file descriptors. Applications can pass references
to syncpoints to other devices that only support memory semaphores to
facilitate synchronization with syncpoints.
Only syncpoints allocated through the DRM file descriptor ("owned" by
the application) can be exported read-write. All syncpoints can be
exported read-only.
Jira HOSTX-5722
Bug 4919132
Change-Id: I4f5c007b7f9ba65780c418b4e22c5f59a11ef84d
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3252026
Reviewed-by: Santosh BS <santoshb@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Trivial clean-up for building Tegra DRM by ...
1. Removing the Kconfig file because this is not needed for building
as an external module and we only plan to build this as an external
module.
2. Move the header file 'tegra_drm_next.h' under the Tegra DRM source
directory so that we don't need to pass the path for finding the
header when building Tegra DRM as an external module.
3. Remove the 'CONFIG_DRM_TEGRA_NEXT' variable because we always build
Tegra DRM as a module.
Bug 200687525
Change-Id: I79661fa7eaf548646277e5e89adab198383bf466
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2485761
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
