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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

4181 bytes

Lines

143

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/errno.h
• linux/types.h

Detected Declarations

• struct drm_connector_state
• struct drm_modeset_acquire_ctx
• struct intel_atomic_state
• struct intel_connector
• struct intel_crtc
• struct intel_crtc_state
• struct intel_display
• struct intel_dp
• struct intel_encoder
• struct intel_link_bw_limits
• function intel_dp_tunnel_detect
• function intel_dp_tunnel_disconnect
• function intel_dp_tunnel_pr_optimization_supported
• function intel_dp_tunnel_atomic_cleanup_inherited_state
• function intel_dp_tunnel_atomic_clear_stream_bw
• function intel_dp_tunnel_atomic_add_state_for_crtc
• function intel_dp_tunnel_atomic_check_link
• function intel_dp_tunnel_atomic_check_state
• function intel_dp_tunnel_atomic_alloc_bw
• function intel_dp_tunnel_mgr_init
• function intel_dp_tunnel_mgr_cleanup

Annotated Snippet

static inline void intel_dp_tunnel_disconnect(struct intel_dp *intel_dp) {}
static inline void intel_dp_tunnel_destroy(struct intel_dp *intel_dp) {}
static inline void intel_dp_tunnel_resume(struct intel_dp *intel_dp,
					  const struct intel_crtc_state *crtc_state,
					  bool dpcd_updated) {}
static inline void intel_dp_tunnel_suspend(struct intel_dp *intel_dp) {}

static inline bool intel_dp_tunnel_bw_alloc_is_enabled(struct intel_dp *intel_dp)
{
	return false;
}

static inline bool intel_dp_tunnel_pr_optimization_supported(struct intel_dp *intel_dp)
{
	return false;
}

static inline void
intel_dp_tunnel_atomic_cleanup_inherited_state(struct intel_atomic_state *state) {}

static inline int
intel_dp_tunnel_atomic_compute_stream_bw(struct intel_atomic_state *state,
					 struct intel_dp *intel_dp,
					 const struct intel_connector *connector,
					 struct intel_crtc_state *crtc_state)
{
	return 0;
}

static inline int
intel_dp_tunnel_atomic_clear_stream_bw(struct intel_atomic_state *state,
				       struct intel_crtc_state *crtc_state)
{
	return 0;
}

static inline int
intel_dp_tunnel_atomic_add_state_for_crtc(struct intel_atomic_state *state,
					  struct intel_crtc *crtc)
{
	return 0;
}

static inline int
intel_dp_tunnel_atomic_check_link(struct intel_atomic_state *state,
				  struct intel_link_bw_limits *limits)
{
	return 0;
}

static inline int
intel_dp_tunnel_atomic_check_state(struct intel_atomic_state *state,
				   struct intel_dp *intel_dp,
				   struct intel_connector *connector)
{
	return 0;
}

static inline int
intel_dp_tunnel_atomic_alloc_bw(struct intel_atomic_state *state)
{
	return 0;
}

static inline int
intel_dp_tunnel_mgr_init(struct intel_display *display)
{
	return 0;
}

static inline void intel_dp_tunnel_mgr_cleanup(struct intel_display *display) {}

#endif /* CONFIG_DRM_I915_DP_TUNNEL || CONFIG_DRM_XE_DP_TUNNEL */

#endif /* __INTEL_DP_TUNNEL_H__ */

Annotation

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