drivers/gpu/drm/tegra/plane.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/tegra/plane.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/tegra/plane.h
Extension
.h
Size
2310 bytes
Lines
99
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct tegra_plane {
	struct drm_plane base;
	struct tegra_dc *dc;
	unsigned int offset;
	unsigned int index;

	struct icc_path *icc_mem;
	struct icc_path *icc_mem_vfilter;
};

struct tegra_cursor {
	struct tegra_plane base;

	struct tegra_bo *bo;
	unsigned int width;
	unsigned int height;
};

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;

	struct host1x_bo_mapping *map[3];
	dma_addr_t iova[3];

	struct tegra_bo_tiling tiling;
	u32 format;
	u32 swap;

	bool reflect_x;
	bool reflect_y;

	/* used for legacy blending support only */
	struct tegra_plane_legacy_blending_state blending[2];
	bool opaque;

	/* bandwidths are in ICC units, i.e. kbytes/sec */
	u32 total_peak_memory_bandwidth;
	u32 peak_memory_bandwidth;
	u32 avg_memory_bandwidth;
};

static inline struct tegra_plane_state *
to_tegra_plane_state(struct drm_plane_state *state)
{
	if (state)
		return container_of(state, struct tegra_plane_state, base);

	return NULL;
}

static inline const struct tegra_plane_state *
to_const_tegra_plane_state(const struct drm_plane_state *state)
{
	return to_tegra_plane_state((struct drm_plane_state *)state);
}

extern const struct drm_plane_funcs tegra_plane_funcs;

int tegra_plane_prepare_fb(struct drm_plane *plane,
			   struct drm_plane_state *state);
void tegra_plane_cleanup_fb(struct drm_plane *plane,
			    struct drm_plane_state *state);

int tegra_plane_state_add(struct tegra_plane *plane,
			  struct drm_plane_state *state);

int tegra_plane_format(u32 fourcc, u32 *format, u32 *swap);
bool tegra_plane_format_is_indexed(unsigned int format);
bool tegra_plane_format_is_yuv(unsigned int format, unsigned int *planes, unsigned int *bpc);
int tegra_plane_setup_legacy_state(struct tegra_plane *tegra,
				   struct tegra_plane_state *state);
int tegra_plane_interconnect_init(struct tegra_plane *plane);

#endif /* TEGRA_PLANE_H */

Annotation

Implementation Notes