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drm/tegra: plane: Implement zpos plane property for older Tegras

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Older Tegra's do not support plane's Z position handling in hardware,
but the hardware provides knobs to implement it in software.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Dmitry Osipenko
2018-05-04 17:39:59 +03:00
committed by Thierry Reding
parent acc6a3a9af
commit 3dae08bc07
3 changed files with 254 additions and 106 deletions
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13
drivers/gpu/drm/tegra/plane.h
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@@ -34,6 +34,11 @@ static inline struct tegra_plane *to_tegra_plane(struct drm_plane *plane)
return container_of(plane, struct tegra_plane, base);
}
struct tegra_plane_legacy_blending_state {
bool alpha;
bool top;
};
struct tegra_plane_state {
struct drm_plane_state base;
@@ -42,8 +47,8 @@ struct tegra_plane_state {
u32 swap;
/* used for legacy blending support only */
struct tegra_plane_legacy_blending_state blending[2];
bool opaque;
bool dependent[3];
};
static inline struct tegra_plane_state *
@@ -62,9 +67,7 @@ int tegra_plane_state_add(struct tegra_plane *plane,
int tegra_plane_format(u32 fourcc, u32 *format, u32 *swap);
bool tegra_plane_format_is_yuv(unsigned int format, bool *planar);
bool tegra_plane_format_has_alpha(unsigned int format);
int tegra_plane_format_get_alpha(unsigned int opaque, unsigned int *alpha);
void tegra_plane_check_dependent(struct tegra_plane *tegra,
struct tegra_plane_state *state);
int tegra_plane_setup_legacy_state(struct tegra_plane *tegra,
struct tegra_plane_state *state);
#endif /* TEGRA_PLANE_H */