+ dri-devel
On Wed, Feb 28, 2018 at 4:33 AM, S, Shirish Shirish.S@amd.com wrote:
From: Shirish S shirish.s@amd.com
Add reverse iterator "for_each_oldnew_plane_in_state_reverse" to complement "for_each_oldnew_plane_in_state" way of reading plane states.
The plane states are required to be read in reverse order for amdgpu, as the z order convention followed in linux is opposite to how the planes are supposed to be presented to DC engine, which is in common to both windows and linux.
Signed-off-by: Shirish S shirish.s@amd.com Signed-off-by: Pratik Vishwakarma Pratik.Vishwakarma@amd.com
include/drm/drm_atomic.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index cf13842..b947930 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -754,6 +754,28 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p); (new_plane_state) = (__state)->planes[__i].new_state, 1))
/**
- for_each_oldnew_plane_in_state_reverse - iterate over all planes in an atomic
- update in reverse order
- @__state: &struct drm_atomic_state pointer
- @plane: &struct drm_plane iteration cursor
- @old_plane_state: &struct drm_plane_state iteration cursor for the old state
- @new_plane_state: &struct drm_plane_state iteration cursor for the new state
- @__i: int iteration cursor, for macro-internal use
- This iterates over all planes in an atomic update in reverse order,
- tracking both old and new state. This is useful in places where the
- state delta needs to be considered, for example in atomic check functions.
- */
+#define for_each_oldnew_plane_in_state_reverse(__state, plane, old_plane_state, new_plane_state, __i) \
(for ((__i) = ((__state)->dev->mode_config.num_total_plane - 1); \(__i) >= 0; \(__i)--) \for_each_if ((__state)->planes[__i].ptr && \((plane) = (__state)->planes[__i].ptr, \(old_plane_state) = (__state)->planes[__i].old_state,\(new_plane_state) = (__state)->planes[__i].new_state, 1)))+/**
- for_each_old_plane_in_state - iterate over all planes in an atomic update
- @__state: &struct drm_atomic_state pointer
- @plane: &struct drm_plane iteration cursor
-- 2.7.4
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