drivers/gpu/drm/i915/display/skl_prefill.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/i915/display/skl_prefill.h

Extension

.h

Size

1177 bytes

Lines

47

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h

Detected Declarations

• struct intel_crtc_state
• struct skl_prefill_ctx

Annotated Snippet

struct skl_prefill_ctx {
	/* .16 scanlines */
	struct {
		unsigned int fixed;
		unsigned int wm0;
		unsigned int scaler_1st;
		unsigned int scaler_2nd;
		unsigned int dsc;
		unsigned int full;
	} prefill;

	/* .16 adjustment factors */
	struct {
		unsigned int cdclk;
		unsigned int scaler_1st;
		unsigned int scaler_2nd;
	} adj;
};

void skl_prefill_init_worst(struct skl_prefill_ctx *ctx,
			    const struct intel_crtc_state *crtc_state);
void skl_prefill_init(struct skl_prefill_ctx *ctx,
		      const struct intel_crtc_state *crtc_state);

bool skl_prefill_vblank_too_short(const struct skl_prefill_ctx *ctx,
				  const struct intel_crtc_state *crtc_state,
				  unsigned int latency_us);
int skl_prefill_min_guardband(const struct skl_prefill_ctx *ctx,
			      const struct intel_crtc_state *crtc_state,
			      unsigned int latency_us);
int skl_prefill_min_cdclk(const struct skl_prefill_ctx *ctx,
			  const struct intel_crtc_state *crtc_state);

#endif /* __SKL_PREFILL_H__ */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct intel_crtc_state`, `struct skl_prefill_ctx`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source implementation candidate.

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.