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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

2459 bytes

Lines

64

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

• No C-style include directives detected by the generator.

Detected Declarations

• struct drm_display_mode
• struct intel_atomic_state
• struct intel_crtc
• struct intel_crtc_state
• struct intel_display
• struct intel_dsb
• struct intel_plane
• struct intel_plane_state
• enum drm_mode_status
• enum intel_output_format

Annotated Snippet

#ifndef INTEL_SCALER_H
#define INTEL_SCALER_H

enum drm_mode_status;
struct drm_display_mode;
struct intel_atomic_state;
struct intel_crtc;
struct intel_crtc_state;
struct intel_display;
struct intel_dsb;
enum intel_output_format;
struct intel_plane;
struct intel_plane_state;

int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state);

int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
			    struct intel_plane_state *plane_state);

int intel_atomic_setup_scalers(struct intel_atomic_state *state,
			       struct intel_crtc *crtc);

void skl_pfit_enable(const struct intel_crtc_state *crtc_state);

void skl_program_plane_scaler(struct intel_dsb *dsb,
			      struct intel_plane *plane,
			      const struct intel_crtc_state *crtc_state,
			      const struct intel_plane_state *plane_state);
void skl_detach_scalers(struct intel_dsb *dsb,
			const struct intel_crtc_state *crtc_state);
void skl_scaler_disable(const struct intel_crtc_state *old_crtc_state);

void skl_scaler_get_config(struct intel_crtc_state *crtc_state);

enum drm_mode_status
skl_scaler_mode_valid(struct intel_display *display,
		      const struct drm_display_mode *mode,
		      enum intel_output_format output_format,
		      int num_joined_pipes);

void adl_scaler_ecc_mask(const struct intel_crtc_state *crtc_state);

void adl_scaler_ecc_unmask(const struct intel_crtc_state *crtc_state);

unsigned int skl_scaler_max_total_scale(const struct intel_crtc_state *crtc_state);
unsigned int skl_scaler_max_scale(const struct intel_crtc_state *crtc_state);
unsigned int skl_scaler_max_hscale(const struct intel_crtc_state *crtc_state);

unsigned int skl_scaler_1st_prefill_adjustment_worst(const struct intel_crtc_state *crtc_state);
unsigned int skl_scaler_2nd_prefill_adjustment_worst(const struct intel_crtc_state *crtc_state);
unsigned int skl_scaler_1st_prefill_lines_worst(const struct intel_crtc_state *crtc_state);
unsigned int skl_scaler_2nd_prefill_lines_worst(const struct intel_crtc_state *crtc_state);

unsigned int skl_scaler_1st_prefill_adjustment(const struct intel_crtc_state *crtc_state);
unsigned int skl_scaler_2nd_prefill_adjustment(const struct intel_crtc_state *crtc_state);
unsigned int skl_scaler_1st_prefill_lines(const struct intel_crtc_state *crtc_state);
unsigned int skl_scaler_2nd_prefill_lines(const struct intel_crtc_state *crtc_state);

#endif

Annotation

• Detected declarations: `struct drm_display_mode`, `struct intel_atomic_state`, `struct intel_crtc`, `struct intel_crtc_state`, `struct intel_display`, `struct intel_dsb`, `struct intel_plane`, `struct intel_plane_state`, `enum drm_mode_status`, `enum intel_output_format`.
• 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.