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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

2700 bytes

Lines

99

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_link_m_n
• enum pipe
• function intel_has_pch_trancoder
• function intel_crtc_pch_transcoder
• function ilk_pch_pre_enable

Annotated Snippet

#ifndef _INTEL_PCH_DISPLAY_H_
#define _INTEL_PCH_DISPLAY_H_

#include <linux/types.h>

enum pipe;
struct intel_atomic_state;
struct intel_crtc;
struct intel_crtc_state;
struct intel_display;
struct intel_link_m_n;

#ifdef I915
bool intel_has_pch_trancoder(struct intel_display *display,
			     enum pipe pch_transcoder);
enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc);

void ilk_pch_pre_enable(struct intel_atomic_state *state,
			struct intel_crtc *crtc);
void ilk_pch_enable(struct intel_atomic_state *state,
		    struct intel_crtc *crtc);
void ilk_pch_disable(struct intel_atomic_state *state,
		     struct intel_crtc *crtc);
void ilk_pch_post_disable(struct intel_atomic_state *state,
			  struct intel_crtc *crtc);
void ilk_pch_get_config(struct intel_crtc_state *crtc_state);

void lpt_pch_enable(struct intel_atomic_state *state,
		    struct intel_crtc *crtc);
void lpt_pch_disable(struct intel_atomic_state *state,
		     struct intel_crtc *crtc);
void lpt_pch_get_config(struct intel_crtc_state *crtc_state);

void intel_pch_transcoder_get_m1_n1(struct intel_crtc *crtc,
				    struct intel_link_m_n *m_n);
void intel_pch_transcoder_get_m2_n2(struct intel_crtc *crtc,
				    struct intel_link_m_n *m_n);

void intel_pch_sanitize(struct intel_display *display);
#else
static inline bool intel_has_pch_trancoder(struct intel_display *display,
					   enum pipe pch_transcoder)
{
	return false;
}
static inline int intel_crtc_pch_transcoder(struct intel_crtc *crtc)
{
	return 0;
}
static inline void ilk_pch_pre_enable(struct intel_atomic_state *state,
				      struct intel_crtc *crtc)
{
}
static inline void ilk_pch_enable(struct intel_atomic_state *state,
				  struct intel_crtc *crtc)
{
}
static inline void ilk_pch_disable(struct intel_atomic_state *state,
				   struct intel_crtc *crtc)
{
}
static inline void ilk_pch_post_disable(struct intel_atomic_state *state,
					struct intel_crtc *crtc)
{
}
static inline void ilk_pch_get_config(struct intel_crtc_state *crtc_state)
{
}
static inline void lpt_pch_enable(struct intel_atomic_state *state,
				  struct intel_crtc *crtc)
{
}
static inline void lpt_pch_disable(struct intel_atomic_state *state,
				   struct intel_crtc *crtc)
{
}
static inline void lpt_pch_get_config(struct intel_crtc_state *crtc_state)
{
}
static inline void intel_pch_transcoder_get_m1_n1(struct intel_crtc *crtc,
						  struct intel_link_m_n *m_n)
{
}
static inline void intel_pch_transcoder_get_m2_n2(struct intel_crtc *crtc,
						  struct intel_link_m_n *m_n)
{
}
static inline void intel_pch_sanitize(struct intel_display *display)
{
}

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_link_m_n`, `enum pipe`, `function intel_has_pch_trancoder`, `function intel_crtc_pch_transcoder`, `function ilk_pch_pre_enable`.
• 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.