drivers/gpu/drm/omapdrm/omap_overlay.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/omapdrm/omap_overlay.h

Extension

.h

Size

1027 bytes

Lines

36

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.

• 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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h

Detected Declarations

• struct drm_device
• struct drm_mode_object
• struct drm_plane
• struct omap_hw_overlay
• enum drm_plane_type

Annotated Snippet

struct omap_hw_overlay {
	unsigned int idx;

	const char *name;
	enum omap_plane_id id;

	enum omap_overlay_caps caps;
};

int omap_hwoverlays_init(struct omap_drm_private *priv);
void omap_hwoverlays_destroy(struct omap_drm_private *priv);
int omap_overlay_assign(struct drm_atomic_commit *s, struct drm_plane *plane,
			u32 caps, u32 fourcc, struct omap_hw_overlay **overlay,
			struct omap_hw_overlay **r_overlay);
void omap_overlay_release(struct drm_atomic_commit *s, struct omap_hw_overlay *overlay);
void omap_overlay_update_state(struct omap_drm_private *priv, struct omap_hw_overlay *overlay);
#endif /* __OMAPDRM_OVERLAY_H__ */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct drm_device`, `struct drm_mode_object`, `struct drm_plane`, `struct omap_hw_overlay`, `enum drm_plane_type`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.