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author | Brian Starkey <brian.starkey@arm.com> | 2017-03-29 17:42:33 +0100 |
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committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2018-06-20 15:29:18 +0100 |
commit | b13cc8dd588434e2aec781e6d12224e4c408ac18 (patch) | |
tree | c202a3e17b01d1db38cebd680dd7d5cdc0f641cf /include/drm/drm_atomic.h | |
parent | 935774cd71fe604cc8ed24adcb507d7784255672 (diff) | |
download | op-kernel-dev-b13cc8dd588434e2aec781e6d12224e4c408ac18.zip op-kernel-dev-b13cc8dd588434e2aec781e6d12224e4c408ac18.tar.gz |
drm: writeback: Add out-fences for writeback connectors
Add the WRITEBACK_OUT_FENCE_PTR property to writeback connectors, to
enable userspace to get a fence which will signal once the writeback is
complete. It is not allowed to request an out-fence without a
framebuffer attached to the connector.
A timeline is added to drm_writeback_connector for use by the writeback
out-fences.
In the case of a commit failure or DRM_MODE_ATOMIC_TEST_ONLY, the fence
is set to -1.
Changes from v2:
- Rebase onto Gustavo Padovan's v9 explicit sync series
- Change out_fence_ptr type to s32 __user *
- Set *out_fence_ptr to -1 in drm_atomic_connector_set_property
- Store fence in drm_writeback_job
Gustavo Padovan:
- Move out_fence_ptr out of connector_state
- Signal fence from drm_writeback_signal_completion instead of
in driver directly
Changes from v3:
- Rebase onto commit 7e9081c5aac7 ("drm/fence: fix memory overwrite
when setting out_fence fd") (change out_fence_ptr to s32 __user *,
for real this time.)
- Update documentation around WRITEBACK_OUT_FENCE_PTR
Signed-off-by: Brian Starkey <brian.starkey@arm.com>
[rebased and fixed conflicts]
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/229036/
Diffstat (limited to 'include/drm/drm_atomic.h')
-rw-r--r-- | include/drm/drm_atomic.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index 8254521..da9d95a 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -160,6 +160,14 @@ struct __drm_crtcs_state { struct __drm_connnectors_state { struct drm_connector *ptr; struct drm_connector_state *state, *old_state, *new_state; + /** + * @out_fence_ptr: + * + * User-provided pointer which the kernel uses to return a sync_file + * file descriptor. Used by writeback connectors to signal completion of + * the writeback. + */ + s32 __user *out_fence_ptr; }; struct drm_private_obj; |