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drm/i915: Add a cursor hack to allow converting legacy page flip to atomic, v3.

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Do something similar to vc4, only allow updating the cursor state
in-place through a fastpath when the watermarks are unaffected. This
will allow cursor movement to be smooth, but changing cursor size or
showing/hiding cursor will still fall back so watermarks can be updated.

Only moving and changing fb is allowed.

Changes since v1:
- Set page flip to always_unused for trybot.
- Copy fence correctly, ignore plane_state->state, should be NULL.
- Check crtc_state for !active and modeset, go to slowpath if the case.
Changes since v2:
- Make error handling work correctly. (Matthew Auld)

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/a8e4cb00-5171-14e5-bbe3-dadb654ff296@linux.intel.com
This commit is contained in:
Maarten Lankhorst
2016-12-12 11:34:55 +01:00
committed by Daniel Vetter
parent f2b0feeb2e
commit f79f26921e
3 changed files with 163 additions and 18 deletions
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2
drivers/gpu/drm/i915/intel_drv.h
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@@ -1815,6 +1815,8 @@ struct drm_plane_state *intel_plane_duplicate_state(struct drm_plane *plane);
void intel_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state);
extern const struct drm_plane_helper_funcs intel_plane_helper_funcs;
int intel_plane_atomic_check_with_state(struct intel_crtc_state *crtc_state,
struct intel_plane_state *intel_state);
/* intel_color.c */
void intel_color_init(struct drm_crtc *crtc);