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

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/i915/display/intel_fbc.h

File Facts

System: Linux kernel
Corpus path: drivers/gpu/drm/i915/display/intel_fbc.h
Extension: .h
Size: 2065 bytes
Lines: 62
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 intel_atomic_state
struct intel_crtc
struct intel_crtc_state
struct intel_display
struct intel_dsb
struct intel_fbc
struct intel_plane
struct intel_plane_state
enum fb_op_origin
enum pipe
enum intel_fbc_id

Annotated Snippet

#ifndef __INTEL_FBC_H__
#define __INTEL_FBC_H__

#include <linux/types.h>

enum fb_op_origin;
enum pipe;
struct intel_atomic_state;
struct intel_crtc;
struct intel_crtc_state;
struct intel_display;
struct intel_dsb;
struct intel_fbc;
struct intel_plane;
struct intel_plane_state;

enum intel_fbc_id {
	INTEL_FBC_A,
	INTEL_FBC_B,
	INTEL_FBC_C,
	INTEL_FBC_D,

	I915_MAX_FBCS,
};

int intel_fbc_atomic_check(struct intel_atomic_state *state);
int intel_fbc_min_cdclk(const struct intel_crtc_state *crtc_state);
bool intel_fbc_pre_update(struct intel_atomic_state *state,
			  struct intel_crtc *crtc);
void intel_fbc_post_update(struct intel_atomic_state *state,
			   struct intel_crtc *crtc);
void intel_fbc_init(struct intel_display *display);
void intel_fbc_cleanup(struct intel_display *display);
void intel_fbc_sanitize(struct intel_display *display);
void intel_fbc_update(struct intel_atomic_state *state,
		      struct intel_crtc *crtc);
void intel_fbc_disable(struct intel_crtc *crtc);
void intel_fbc_invalidate(struct intel_display *display,
			  unsigned int frontbuffer_bits,
			  enum fb_op_origin origin);
void intel_fbc_flush(struct intel_display *display,
		     unsigned int frontbuffer_bits, enum fb_op_origin origin);
void intel_fbc_add_plane(struct intel_fbc *fbc, struct intel_plane *plane);
void intel_fbc_handle_fifo_underrun_irq(struct intel_display *display);
void intel_fbc_read_underrun_dbg_info(struct intel_display *display,
				      enum pipe, bool log);
void intel_fbc_reset_underrun(struct intel_display *display);
void intel_fbc_crtc_debugfs_add(struct intel_crtc *crtc);
void intel_fbc_debugfs_register(struct intel_display *display);
void intel_fbc_prepare_dirty_rect(struct intel_atomic_state *state,
				  struct intel_crtc *crtc);
void intel_fbc_dirty_rect_update_noarm(struct intel_dsb *dsb,
				       struct intel_plane *plane);
bool intel_fbc_need_pixel_normalizer(const struct intel_plane_state *plane_state);

#endif /* __INTEL_FBC_H__ */

Annotation

Immediate include surface: `linux/types.h`.
Detected declarations: `struct intel_atomic_state`, `struct intel_crtc`, `struct intel_crtc_state`, `struct intel_display`, `struct intel_dsb`, `struct intel_fbc`, `struct intel_plane`, `struct intel_plane_state`, `enum fb_op_origin`, `enum pipe`.
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.