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drm/tegra: plane: Correct legacy blending

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Keep old 'dependent' state of unaffected planes, this way new state takes
into account current state of unaffected planes.

Fixes: ebae8d0743 ("drm/tegra: dc: Implement legacy blending")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Dmitry Osipenko 2018-03-15 04:00:24 +03:00 committed by Thierry Reding
parent 8a927d648c
commit 48519232be
1 changed files with 2 additions and 3 deletions
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5
drivers/gpu/drm/tegra/plane.c
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@ -334,9 +334,6 @@ void tegra_plane_check_dependent(struct tegra_plane *tegra,
unsigned int zpos[2];
unsigned int i;
for (i = 0; i < 3; i++)
state->dependent[i] = false;
for (i = 0; i < 2; i++)
zpos[i] = 0;
@ -350,6 +347,8 @@ void tegra_plane_check_dependent(struct tegra_plane *tegra,
index = tegra_plane_get_overlap_index(tegra, p);
state->dependent[index] = false;
/*
* If any of the other planes is on top of this plane and uses
* a format with an alpha component, mark this plane as being