Hi all,
after obsessing over these for another month after xds 2010,
this is the first version of my vblank timestamping patches that
i'm not totally ashamed off.
1st patch modifies the drm vblank handling to maintain precise
timestamps of when vblanks happen. It timestamps the end of
each vblank
The DRI2 swap & sync implementation needs precise
vblank counts and precise timestamps corresponding
to those vblank counts. For conformance to the OpenML
OML_sync_control extension specification the DRM
timestamp associated with a vblank count should
correspond to the start of video scanout of the
This patch adds new functions for use by the drm core:
.get_vblank_timestamp() provides a precise timestamp
for the end of the most recent (or current) vblank
interval of a given crtc, as needed for the DRI2
implementation of the OML_sync_control extension.
It is a thin wrapper around the drm fun
This patch adds new functions for use by the drm core:
.get_vblank_timestamp() provides a precise timestamp
for the end of the most recent (or current) vblank
interval of a given crtc, as needed for the DRI2
implementation of the OML_sync_control extension.
It is a thin wrapper around the drm func
Oh btw., the patches are against the current drm-radeon-testing tree,
applied after commit...
21c74a8ea8b47eb6c3c621e36578f6e27f65c5c7
"drm, kdb, kms: Change mode_set_base_atomic() enter argument to be an enum"
... and should apply cleanly.
thanks,
-mario
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