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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

1637 bytes

Lines

63

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
• function hsw_ips_disable
• function hsw_ips_pre_update
• function hsw_ips_post_update
• function hsw_ips_min_cdclk
• function hsw_ips_compute_config
• function hsw_ips_get_config

Annotated Snippet

#ifndef __HSW_IPS_H__
#define __HSW_IPS_H__

#include <linux/types.h>

struct intel_atomic_state;
struct intel_crtc;
struct intel_crtc_state;

#ifdef I915
bool hsw_ips_disable(const struct intel_crtc_state *crtc_state);
bool hsw_ips_pre_update(struct intel_atomic_state *state,
			struct intel_crtc *crtc);
void hsw_ips_post_update(struct intel_atomic_state *state,
			 struct intel_crtc *crtc);
bool hsw_crtc_supports_ips(struct intel_crtc *crtc);
int hsw_ips_min_cdclk(const struct intel_crtc_state *crtc_state);
int hsw_ips_compute_config(struct intel_atomic_state *state,
			   struct intel_crtc *crtc);
void hsw_ips_get_config(struct intel_crtc_state *crtc_state);
void hsw_ips_crtc_debugfs_add(struct intel_crtc *crtc);
#else
static inline bool hsw_ips_disable(const struct intel_crtc_state *crtc_state)
{
	return false;
}
static inline bool hsw_ips_pre_update(struct intel_atomic_state *state,
				      struct intel_crtc *crtc)
{
	return false;
}
static inline void hsw_ips_post_update(struct intel_atomic_state *state,
				       struct intel_crtc *crtc)
{
}
static inline bool hsw_crtc_supports_ips(struct intel_crtc *crtc)
{
	return false;
}
static inline int hsw_ips_min_cdclk(const struct intel_crtc_state *crtc_state)
{
	return 0;
}
static inline int hsw_ips_compute_config(struct intel_atomic_state *state,
					 struct intel_crtc *crtc)
{
	return 0;
}
static inline void hsw_ips_get_config(struct intel_crtc_state *crtc_state)
{
}
static inline void hsw_ips_crtc_debugfs_add(struct intel_crtc *crtc)
{
}
#endif

#endif /* __HSW_IPS_H__ */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct intel_atomic_state`, `struct intel_crtc`, `struct intel_crtc_state`, `function hsw_ips_disable`, `function hsw_ips_pre_update`, `function hsw_ips_post_update`, `function hsw_ips_min_cdclk`, `function hsw_ips_compute_config`, `function hsw_ips_get_config`.
• 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.