1087fac18b
Traditionally, windows were accessed indirectly, through a register selection window that required a global register to be programmed with the index of the window to access. Since the global register could be written from modesetting functions as well as the interrupt handler concurrently, accesses had to be serialized using a lock. Using direct accesses to the window registers the lock can be avoided. Signed-off-by: Thierry Reding <treding@nvidia.com>
64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
/*
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* Copyright (C) 2017 NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef TEGRA_PLANE_H
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#define TEGRA_PLANE_H 1
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#include <drm/drm_plane.h>
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struct tegra_bo;
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struct tegra_dc;
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struct tegra_plane {
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struct drm_plane base;
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struct tegra_dc *dc;
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unsigned int offset;
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unsigned int index;
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unsigned int depth;
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};
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struct tegra_cursor {
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struct tegra_plane base;
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struct tegra_bo *bo;
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unsigned int width;
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unsigned int height;
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};
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static inline struct tegra_plane *to_tegra_plane(struct drm_plane *plane)
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{
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return container_of(plane, struct tegra_plane, base);
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}
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struct tegra_plane_state {
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struct drm_plane_state base;
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struct tegra_bo_tiling tiling;
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u32 format;
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u32 swap;
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};
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static inline struct tegra_plane_state *
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to_tegra_plane_state(struct drm_plane_state *state)
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{
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if (state)
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return container_of(state, struct tegra_plane_state, base);
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return NULL;
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}
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extern const struct drm_plane_funcs tegra_plane_funcs;
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int tegra_plane_state_add(struct tegra_plane *plane,
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struct drm_plane_state *state);
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int tegra_plane_format(u32 fourcc, u32 *format, u32 *swap);
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bool tegra_plane_format_is_yuv(unsigned int format, bool *planar);
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#endif /* TEGRA_PLANE_H */
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