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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

1483 bytes

Lines

38

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_display
• struct ref_tracker

Annotated Snippet

#ifndef __INTEL_DISPLAY_RPM__
#define __INTEL_DISPLAY_RPM__

#include <linux/types.h>

struct intel_display;
struct ref_tracker;

struct ref_tracker *intel_display_rpm_get(struct intel_display *display);
void intel_display_rpm_put(struct intel_display *display, struct ref_tracker *wakeref);

#define __with_intel_display_rpm(__display, __wakeref) \
	for (struct ref_tracker *(__wakeref) = intel_display_rpm_get(__display); (__wakeref); \
	     intel_display_rpm_put((__display), (__wakeref)), (__wakeref) = NULL)

#define with_intel_display_rpm(__display) \
	__with_intel_display_rpm((__display), __UNIQUE_ID(wakeref))

/* Only for special cases. */
bool intel_display_rpm_suspended(struct intel_display *display);

void assert_display_rpm_held(struct intel_display *display);
void intel_display_rpm_assert_block(struct intel_display *display);
void intel_display_rpm_assert_unblock(struct intel_display *display);

/* Only for display power implementation. */
struct ref_tracker *intel_display_rpm_get_raw(struct intel_display *display);
void intel_display_rpm_put_raw(struct intel_display *display, struct ref_tracker *wakeref);

struct ref_tracker *intel_display_rpm_get_if_in_use(struct intel_display *display);
struct ref_tracker *intel_display_rpm_get_noresume(struct intel_display *display);
void intel_display_rpm_put_unchecked(struct intel_display *display);

#endif /* __INTEL_DISPLAY_RPM__ */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct intel_display`, `struct ref_tracker`.
• 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.