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drm/vc4: Export fence through syncobj

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Allow specifying a syncobj on render job submission where we store the
fence for the job. This gives userland flexible access to the fence.

v2: Use 0 as invalid syncobj to drop flag (Eric)
    Don't reintroduce the padding (Eric)

Signed-off-by: Stefan Schake <stschake@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/1524607427-12876-3-git-send-email-stschake@gmail.com
This commit is contained in:
Stefan Schake
2018-04-25 00:03:46 +02:00
committed by Eric Anholt
parent 818f5c8f4c
commit e84fcb95e0
2 changed files with 34 additions and 2 deletions
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6
include/uapi/drm/vc4_drm.h
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@@ -187,6 +187,12 @@ struct drm_vc4_submit_cl {
* will not start until the syncobj is signaled. 0 means ignore.
*/
__u32 in_sync;
/* Syncobj handle to export fence to. If set, the fence in the syncobj
* will be replaced with a fence that signals upon completion of this
* render job. 0 means ignore.
*/
__u32 out_sync;
};
/**