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

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/i915/display/intel_ddi.h

File Facts

System: Linux kernel
Corpus path: drivers/gpu/drm/i915/display/intel_ddi.h
Extension: .h
Size: 3769 bytes
Lines: 89
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

intel_display_reg_defs.h

Detected Declarations

struct drm_connector_state
struct intel_atomic_state
struct intel_bios_encoder_data
struct intel_connector
struct intel_crtc
struct intel_crtc_state
struct intel_display
struct intel_dp
struct intel_dpll
struct intel_dpll_hw_state
struct intel_encoder
enum pipe
enum port
enum transcoder

Annotated Snippet

#ifndef __INTEL_DDI_H__
#define __INTEL_DDI_H__

#include "intel_display_reg_defs.h"

struct drm_connector_state;
struct intel_atomic_state;
struct intel_bios_encoder_data;
struct intel_connector;
struct intel_crtc;
struct intel_crtc_state;
struct intel_display;
struct intel_dp;
struct intel_dpll;
struct intel_dpll_hw_state;
struct intel_encoder;
enum pipe;
enum port;
enum transcoder;

intel_reg_t dp_tp_ctl_reg(struct intel_encoder *encoder,
			  const struct intel_crtc_state *crtc_state);

void intel_ddi_clear_act_sent(struct intel_encoder *encoder,
			      const struct intel_crtc_state *crtc_state);
void intel_ddi_wait_for_act_sent(struct intel_encoder *encoder,
				 const struct intel_crtc_state *crtc_state);

void intel_ddi_fdi_post_disable(struct intel_atomic_state *state,
				struct intel_encoder *intel_encoder,
				const struct intel_crtc_state *old_crtc_state,
				const struct drm_connector_state *old_conn_state);
void intel_ddi_enable_clock(struct intel_encoder *encoder,
			    const struct intel_crtc_state *crtc_state);
void intel_ddi_disable_clock(struct intel_encoder *encoder);
void intel_ddi_get_clock(struct intel_encoder *encoder,
			 struct intel_crtc_state *crtc_state,
			 struct intel_dpll *pll);
void hsw_ddi_enable_clock(struct intel_encoder *encoder,
			  const struct intel_crtc_state *crtc_state);
void hsw_ddi_disable_clock(struct intel_encoder *encoder);
bool hsw_ddi_is_clock_enabled(struct intel_encoder *encoder);
enum icl_port_dpll_id
intel_ddi_port_pll_type(struct intel_encoder *encoder,
			const struct intel_crtc_state *crtc_state);
void hsw_ddi_get_config(struct intel_encoder *encoder,
			struct intel_crtc_state *crtc_state);
struct intel_dpll *icl_ddi_combo_get_pll(struct intel_encoder *encoder);
void hsw_prepare_dp_ddi_buffers(struct intel_encoder *encoder,
				const struct intel_crtc_state *crtc_state);
void intel_wait_ddi_buf_idle(struct intel_display *display, enum port port);
void intel_ddi_init(struct intel_display *display,
		    const struct intel_bios_encoder_data *devdata);
bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
void intel_ddi_config_transcoder_func(struct intel_encoder *encoder,
				      const struct intel_crtc_state *crtc_state);
void intel_ddi_enable_transcoder_func(struct intel_encoder *encoder,
				      const struct intel_crtc_state *crtc_state);
void intel_ddi_disable_transcoder_func(const struct intel_crtc_state *crtc_state);
void intel_ddi_enable_transcoder_clock(struct intel_encoder *encoder,
				       const struct intel_crtc_state *crtc_state);
void intel_ddi_disable_transcoder_clock(const  struct intel_crtc_state *crtc_state);
int intel_ddi_wait_for_fec_status(struct intel_encoder *encoder,
				  const struct intel_crtc_state *crtc_state,
				  bool enabled);
void intel_ddi_set_dp_msa(const struct intel_crtc_state *crtc_state,
			  const struct drm_connector_state *conn_state);
bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
void intel_ddi_set_vc_payload_alloc(const struct intel_crtc_state *crtc_state,
				    bool state);
void intel_ddi_compute_min_voltage_level(struct intel_crtc_state *crtc_state);
int intel_ddi_toggle_hdcp_bits(struct intel_encoder *intel_encoder,
			       enum transcoder cpu_transcoder,
			       bool enable, u32 hdcp_mask);
void intel_ddi_sanitize_encoder_pll_mapping(struct intel_encoder *encoder);
int intel_ddi_level(struct intel_encoder *encoder,
		    const struct intel_crtc_state *crtc_state,
		    int lane);
void intel_ddi_update_active_dpll(struct intel_atomic_state *state,
				  struct intel_encoder *encoder,
				  struct intel_crtc *crtc);

#endif /* __INTEL_DDI_H__ */

Annotation

Immediate include surface: `intel_display_reg_defs.h`.
Detected declarations: `struct drm_connector_state`, `struct intel_atomic_state`, `struct intel_bios_encoder_data`, `struct intel_connector`, `struct intel_crtc`, `struct intel_crtc_state`, `struct intel_display`, `struct intel_dp`, `struct intel_dpll`, `struct intel_dpll_hw_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.