drivers/gpu/drm/sti/sti_plane.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/sti/sti_plane.h

Extension

.h

Size

1998 bytes

Lines

84

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

• drm/drm_atomic_helper.h

Detected Declarations

• struct sti_fps_info
• struct sti_plane
• enum sti_plane_type
• enum sti_plane_id_of_type
• enum sti_plane_desc
• enum sti_plane_status

Annotated Snippet

struct sti_fps_info {
	bool output;
	unsigned int curr_frame_counter;
	unsigned int last_frame_counter;
	unsigned int curr_field_counter;
	unsigned int last_field_counter;
	ktime_t	     last_timestamp;
	char fps_str[FPS_LENGTH];
	char fips_str[FPS_LENGTH];
};

/**
 * STI plane structure
 *
 * @plane:              drm plane it is bound to (if any)
 * @desc:               plane type & id
 * @status:             to know the status of the plane
 * @fps_info:           frame per second info
 */
struct sti_plane {
	struct drm_plane drm_plane;
	enum sti_plane_desc desc;
	enum sti_plane_status status;
	struct sti_fps_info fps_info;
};

const char *sti_plane_to_str(struct sti_plane *plane);
void sti_plane_update_fps(struct sti_plane *plane,
			  bool new_frame,
			  bool new_field);

void sti_plane_init_property(struct sti_plane *plane,
			     enum drm_plane_type type);
#endif

Annotation

• Immediate include surface: `drm/drm_atomic_helper.h`.
• Detected declarations: `struct sti_fps_info`, `struct sti_plane`, `enum sti_plane_type`, `enum sti_plane_id_of_type`, `enum sti_plane_desc`, `enum sti_plane_status`.
• 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.