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drm/sun4i: backend: Add support for zpos

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Our various planes have a configurable zpos, that combined with the pipes
allow to configure the composition.

Since the interaction between the pipes, zpos and alphas framebuffers is
not trivial, let's just enable the zpos as an immutable property for now,
and use that zpos in our atomic_update part.

Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b006853e908bd06661c5bc1f2191121523bce0e4.1516617243.git-series.maxime.ripard@free-electrons.com
This commit is contained in:
Maxime Ripard
2017-05-01 10:52:32 +02:00
parent 2bebcc4564
commit 47a05f4a68
4 changed files with 24 additions and 0 deletions
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2
drivers/gpu/drm/sun4i/sun4i_backend.h
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@@ -182,5 +182,7 @@ int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend,
int layer, struct drm_plane *plane);
int sun4i_backend_update_layer_frontend(struct sun4i_backend *backend,
int layer, uint32_t in_fmt);
int sun4i_backend_update_layer_zpos(struct sun4i_backend *backend,
int layer, struct drm_plane *plane);
#endif /* _SUN4I_BACKEND_H_ */