drm/tegra: Deliver syncpoint base to user space
This patch adds a separate ioctl for delivering syncpoint base number to user space. If the syncpoint does not have an associated base, the function returns -ENXIO. Signed-off-by: NArto Merilainen <amerilainen@nvidia.com> Reviewed-by: NTerje Bergstrom <tbergstrom@nvidia.com> Signed-off-by: NThierry Reding <treding@nvidia.com>
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