drivers/media/cec/usb/extron-da-hd-4k-plus/cec-splitter.h

File Facts

System

Linux kernel

Corpus path

drivers/media/cec/usb/extron-da-hd-4k-plus/cec-splitter.h

Extension

.h

Size

1479 bytes

Lines

52

Domain

Driver Families

Bucket

drivers/media

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• struct cec_splitter
• struct cec_splitter_port
• struct cec_splitter

Annotated Snippet

struct cec_splitter_port {
	struct cec_splitter *splitter;
	struct cec_adapter *adap;
	unsigned int port;
	bool is_active_source;
	bool found_sink;
	ktime_t lost_sink_ts;
	u32 out_request_current_latency_seq;
	ktime_t out_request_current_latency_ts;
	u8 video_latency;
	u32 out_give_device_power_status_seq;
	ktime_t out_give_device_power_status_ts;
	u8 power_status;
};

struct cec_splitter {
	struct device *dev;
	unsigned int num_out_ports;
	struct cec_splitter_port **ports;

	/* High-level splitter state */
	u8 request_current_latency_dest;
	u8 give_device_power_status_dest;
	bool is_standby;
};

void cec_splitter_unconfigured_output(struct cec_splitter_port *port);
void cec_splitter_configured_output(struct cec_splitter_port *port);
int cec_splitter_received_input(struct cec_splitter_port *port, struct cec_msg *msg);
int cec_splitter_received_output(struct cec_splitter_port *port, struct cec_msg *msg,
				 struct cec_adapter *input_adap);
void cec_splitter_nb_transmit_canceled_output(struct cec_splitter_port *port,
					      const struct cec_msg *msg,
					      struct cec_adapter *input_adap);
bool cec_splitter_poll(struct cec_splitter *splitter,
		       struct cec_adapter *input_adap, bool debug);

#endif

Annotation

• Detected declarations: `struct cec_splitter`, `struct cec_splitter_port`, `struct cec_splitter`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: source implementation candidate.

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.