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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

1980 bytes

Lines

54

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 drm_printer
• struct intel_atomic_state
• struct intel_display
• struct intel_dpll
• struct intel_dpll_hw_state
• struct intel_encoder
• struct intel_crtc_state
• struct intel_crtc
• struct intel_lt_phy_pll_state

Annotated Snippet

#ifndef __INTEL_LT_PHY_H__
#define __INTEL_LT_PHY_H__

#include <linux/types.h>

struct drm_printer;
struct intel_atomic_state;
struct intel_display;
struct intel_dpll;
struct intel_dpll_hw_state;
struct intel_encoder;
struct intel_crtc_state;
struct intel_crtc;
struct intel_lt_phy_pll_state;

void intel_lt_phy_pll_enable(struct intel_encoder *encoder,
			     struct intel_dpll *pll,
			     const struct intel_dpll_hw_state *dpll_hw_state);
void intel_lt_phy_pll_disable(struct intel_encoder *encoder);
int
intel_lt_phy_pll_calc_state(struct intel_crtc_state *crtc_state,
			    struct intel_encoder *encoder,
			    struct intel_dpll_hw_state *hw_state);
void intel_lt_phy_tbt_pll_calc_state(struct intel_dpll_hw_state *hw_state);
int intel_lt_phy_calc_port_clock(struct intel_display *display,
				 const struct intel_lt_phy_pll_state *lt_state);
void intel_lt_phy_set_signal_levels(struct intel_encoder *encoder,
				    const struct intel_crtc_state *crtc_state);
void intel_lt_phy_dump_hw_state(struct drm_printer *p,
				const struct intel_lt_phy_pll_state *hw_state);
bool
intel_lt_phy_pll_compare_hw_state(const struct intel_lt_phy_pll_state *a,
				  const struct intel_lt_phy_pll_state *b);
bool intel_lt_phy_tbt_pll_readout_hw_state(struct intel_display *display,
					   struct intel_dpll *pll,
					   struct intel_dpll_hw_state *hw_state);
bool intel_lt_phy_pll_readout_hw_state(struct intel_encoder *encoder,
				       struct intel_lt_phy_pll_state *pll_state);
int
intel_lt_phy_calculate_hdmi_state(struct intel_lt_phy_pll_state *lt_state,
				  u32 frequency_khz);
void intel_xe3plpd_pll_enable(struct intel_encoder *encoder,
			      struct intel_dpll *pll,
			      const struct intel_dpll_hw_state *dpll_hw_state);
void intel_xe3plpd_pll_disable(struct intel_encoder *encoder);
void intel_lt_phy_verify_plls(struct intel_display *display);

#endif /* __INTEL_LT_PHY_H__ */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct drm_printer`, `struct intel_atomic_state`, `struct intel_display`, `struct intel_dpll`, `struct intel_dpll_hw_state`, `struct intel_encoder`, `struct intel_crtc_state`, `struct intel_crtc`, `struct intel_lt_phy_pll_state`.
• 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.