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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

1685 bytes

Lines

43

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_dp
• struct intel_crtc_state
• struct drm_connector_state
• struct intel_connector
• struct intel_atomic_state
• struct intel_crtc

Annotated Snippet

#ifndef _INTEL_ALPM_H
#define _INTEL_ALPM_H

#include <linux/types.h>

struct intel_dp;
struct intel_crtc_state;
struct drm_connector_state;
struct intel_connector;
struct intel_atomic_state;
struct intel_crtc;

void intel_alpm_init(struct intel_dp *intel_dp);
bool intel_alpm_compute_params(struct intel_dp *intel_dp,
			       struct intel_crtc_state *crtc_state);
void intel_alpm_lobf_compute_config(struct intel_dp *intel_dp,
				    struct intel_crtc_state *crtc_state,
				    struct drm_connector_state *conn_state);
void intel_alpm_configure(struct intel_dp *intel_dp,
			  const struct intel_crtc_state *crtc_state);
void intel_alpm_enable_sink(struct intel_dp *intel_dp,
			    const struct intel_crtc_state *crtc_state);
void intel_alpm_lobf_disable(const struct intel_crtc_state *new_crtc_state);
void intel_alpm_port_configure(struct intel_dp *intel_dp,
			       const struct intel_crtc_state *crtc_state);
void intel_alpm_lobf_enable(const struct intel_crtc_state *new_crtc_state);
void intel_alpm_lobf_debugfs_add(struct intel_connector *connector);
bool intel_alpm_aux_wake_supported(struct intel_dp *intel_dp);
bool intel_alpm_aux_less_wake_supported(struct intel_dp *intel_dp);
bool intel_alpm_is_alpm_aux_less(struct intel_dp *intel_dp,
				 const struct intel_crtc_state *crtc_state);
void intel_alpm_disable(struct intel_dp *intel_dp);
bool intel_alpm_get_error(struct intel_dp *intel_dp);
void intel_alpm_lobf_compute_config_late(struct intel_dp *intel_dp,
					 struct intel_crtc_state *crtc_state);
int intel_alpm_lobf_min_guardband(struct intel_crtc_state *crtc_state);
#endif

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct intel_dp`, `struct intel_crtc_state`, `struct drm_connector_state`, `struct intel_connector`, `struct intel_atomic_state`, `struct intel_crtc`.
• 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.