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Diffstat (limited to '')
| -rw-r--r-- | include/drm/drm_plane.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h index 9563bd25f19b..26fa50c2a50e 100644 --- a/include/drm/drm_plane.h +++ b/include/drm/drm_plane.h @@ -80,8 +80,15 @@ struct drm_plane_state { /** * @fence: * - * Optional fence to wait for before scanning out @fb. Do not write this - * directly, use drm_atomic_set_fence_for_plane() + * Optional fence to wait for before scanning out @fb. The core atomic + * code will set this when userspace is using explicit fencing. Do not + * write this directly for a driver's implicit fence, use + * drm_atomic_set_fence_for_plane() to ensure that an explicit fence is + * preserved. + * + * Drivers should store any implicit fence in this from their + * &drm_plane_helper.prepare_fb callback. See drm_gem_fb_prepare_fb() + * and drm_gem_fb_simple_display_pipe_prepare_fb() for suitable helpers. */ struct dma_fence *fence; |