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

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

File Facts

System: Linux kernel
Corpus path: drivers/gpu/drm/i915/display/intel_dp.h
Extension: .h
Size: 11187 bytes
Lines: 247
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_connector_state
struct drm_dp_desc
struct drm_dp_vsc_sdp
struct drm_encoder
struct drm_modeset_acquire_ctx
struct intel_atomic_state
struct intel_connector
struct intel_crtc_state
struct intel_digital_port
struct intel_display
struct intel_dp
struct intel_encoder
struct link_config_limits
enum intel_output_format
enum pipe
enum port
function intel_dp_unused_lane_mask

Annotated Snippet

struct link_config_limits {
	int min_rate, max_rate;
	int min_lane_count, max_lane_count;
	struct {
		/* Uncompressed DSC input or link output bpp in 1 bpp units */
		int min_bpp, max_bpp;
	} pipe;
	struct {
		/* Compressed or uncompressed link output bpp in 1/16 bpp units */
		int min_bpp_x16, max_bpp_x16;
	} link;
};

void intel_edp_fixup_vbt_bpp(struct intel_encoder *encoder, int pipe_bpp);
bool intel_dp_limited_color_range(const struct intel_crtc_state *crtc_state,
				  const struct drm_connector_state *conn_state);
int intel_dp_min_bpp(enum intel_output_format output_format);
void intel_dp_init_modeset_retry_work(struct intel_connector *connector);
void
intel_dp_queue_modeset_retry_for_link(struct intel_atomic_state *state,
				      struct intel_encoder *encoder,
				      const struct intel_crtc_state *crtc_state);
bool intel_dp_init_connector(struct intel_digital_port *dig_port,
			     struct intel_connector *intel_connector);
void intel_dp_cleanup_connector(struct intel_digital_port *dig_port,
				struct intel_connector *connector);

void intel_dp_connector_sync_state(struct intel_connector *connector,
				   const struct intel_crtc_state *crtc_state);
void intel_dp_set_link_params(struct intel_dp *intel_dp,
			      int link_rate, int lane_count);
int intel_dp_get_active_pipes(struct intel_dp *intel_dp,
			      struct drm_modeset_acquire_ctx *ctx,
			      u8 *pipe_mask);
void intel_dp_flush_connector_commits(struct intel_connector *connector);
void intel_dp_link_check(struct intel_encoder *encoder);
void intel_dp_check_link_state(struct intel_dp *intel_dp);
void intel_dp_set_power(struct intel_dp *intel_dp, u8 mode);
void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp,
					   const struct intel_crtc_state *crtc_state);
void intel_dp_sink_enable_decompression(struct intel_atomic_state *state,
					struct intel_connector *connector,
					const struct intel_crtc_state *new_crtc_state);
void intel_dp_sink_disable_decompression(struct intel_atomic_state *state,
					 struct intel_connector *connector,
					 const struct intel_crtc_state *old_crtc_state);
void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder);
void intel_dp_encoder_shutdown(struct intel_encoder *intel_encoder);
void intel_dp_encoder_flush_work(struct drm_encoder *encoder);
int intel_dp_compute_config(struct intel_encoder *encoder,
			    struct intel_crtc_state *pipe_config,
			    struct drm_connector_state *conn_state);
bool intel_dp_needs_8b10b_fec(const struct intel_crtc_state *crtc_state,
			      bool dsc_enabled_on_crtc);
void intel_dp_dsc_reset_config(struct intel_crtc_state *crtc_state);
int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
				struct intel_crtc_state *pipe_config,
				struct drm_connector_state *conn_state,
				const struct link_config_limits *limits,
				int timeslots);
void intel_dp_audio_compute_config(struct intel_encoder *encoder,
				   struct intel_crtc_state *pipe_config,
				   struct drm_connector_state *conn_state);
bool intel_dp_has_hdmi_sink(struct intel_dp *intel_dp);
bool intel_dp_is_edp(struct intel_dp *intel_dp);
bool intel_dp_is_uhbr(const struct intel_crtc_state *crtc_state);
bool intel_dp_has_dsc(const struct intel_connector *connector);
int intel_dp_link_symbol_size(int rate);
int intel_dp_link_symbol_clock(int rate);
bool intel_dp_is_port_edp(struct intel_display *display, enum port port);
enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *dig_port,
				  bool long_hpd);
void intel_edp_backlight_on(const struct intel_crtc_state *crtc_state,
			    const struct drm_connector_state *conn_state);
void intel_edp_backlight_off(const struct drm_connector_state *conn_state);
void intel_edp_fixup_vbt_bpp(struct intel_encoder *encoder, int pipe_bpp);
void intel_dp_mst_suspend(struct intel_display *display);
void intel_dp_mst_resume(struct intel_display *display);
int intel_dp_max_source_lane_count(struct intel_digital_port *dig_port);
int intel_dp_max_link_rate(struct intel_dp *intel_dp);
int intel_dp_max_lane_count(struct intel_dp *intel_dp);
int intel_dp_config_required_rate(const struct intel_crtc_state *crtc_state);
int intel_dp_rate_select(struct intel_dp *intel_dp, int rate);
int intel_dp_max_common_rate(struct intel_dp *intel_dp);
int intel_dp_max_common_lane_count(struct intel_dp *intel_dp);
int intel_dp_common_rate(struct intel_dp *intel_dp, int index);
int intel_dp_rate_index(const int *rates, int len, int rate);
int intel_dp_link_config_index(struct intel_dp *intel_dp, int link_rate, int lane_count);
void intel_dp_link_config_get(struct intel_dp *intel_dp, int idx, int *link_rate, int *lane_count);
void intel_dp_update_sink_caps(struct intel_dp *intel_dp);

Annotation

Immediate include surface: `linux/types.h`.
Detected declarations: `struct drm_connector_state`, `struct drm_dp_desc`, `struct drm_dp_vsc_sdp`, `struct drm_encoder`, `struct drm_modeset_acquire_ctx`, `struct intel_atomic_state`, `struct intel_connector`, `struct intel_crtc_state`, `struct intel_digital_port`, `struct intel_display`.
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.