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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-10-29 10:34:56 (GMT) |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-11-06 20:02:22 (GMT) |
| commit | e2330f0719515e41090a4d9685b931888b7c01d6 (patch) | |
| tree | a4397df4818daa8a5ebdf68e3b0ac88422e8b6db /include/drm | |
| parent | 042652ed95996a9ef6dcddddc53b5d8bc7fa887e (diff) | |
| download | linux-e2330f0719515e41090a4d9685b931888b7c01d6.tar.xz | |
drm/atomic: Integrate fence support
This patch is for enabling async commits. It replaces an earlier
approach which added an async boolean paramter to the ->prepare_fb
callbacks. The idea is that prepare_fb picks up the right fence to
synchronize against, which is then used by the synchronous commit
helper. For async commits drivers can either register a callback to
the fence or simply do the synchronous wait in their async work queue.
v2: Remove unused variable.
v3: Only wait for fences after the point of no return in the part
of the commit function which can be run asynchronously. This is after
the atomic state has been swapped in, hence now check
plane->state->fence.
Also add a WARN_ON to make sure we don't try to wait on a fence when
there's no fb, just as a sanity check.
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_crtc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index bc47d11..bc1cc3c 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -42,6 +42,7 @@ struct drm_object_properties; struct drm_file; struct drm_clip_rect; struct device_node; +struct fence; #define DRM_MODE_OBJECT_CRTC 0xcccccccc #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0 @@ -658,6 +659,7 @@ struct drm_connector { * struct drm_plane_state - mutable plane state * @crtc: currently bound CRTC, NULL if disabled * @fb: currently bound framebuffer + * @fence: optional fence to wait for before scanning out @fb * @crtc_x: left position of visible portion of plane on crtc * @crtc_y: upper position of visible portion of plane on crtc * @crtc_w: width of visible portion of plane on crtc @@ -673,6 +675,7 @@ struct drm_connector { struct drm_plane_state { struct drm_crtc *crtc; struct drm_framebuffer *fb; + struct fence *fence; /* Signed dest location allows it to be partially off screen */ int32_t crtc_x, crtc_y; |