drivers/gpu/drm/tegra/trace.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/tegra/trace.h

Extension

.h

Size

2215 bytes

Lines

69

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

Dependency Surface

• linux/device.h
• linux/tracepoint.h
• trace/define_trace.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#undef TRACE_SYSTEM
#define TRACE_SYSTEM tegra

#if !defined(DRM_TEGRA_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
#define DRM_TEGRA_TRACE_H 1

#include <linux/device.h>
#include <linux/tracepoint.h>

DECLARE_EVENT_CLASS(register_access,
	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
	TP_ARGS(dev, offset, value),
	TP_STRUCT__entry(
		__field(struct device *, dev)
		__field(unsigned int, offset)
		__field(u32, value)
	),
	TP_fast_assign(
		__entry->dev = dev;
		__entry->offset = offset;
		__entry->value = value;
	),
	TP_printk("%s %04x %08x", dev_name(__entry->dev), __entry->offset,
		  __entry->value)
);

DEFINE_EVENT(register_access, dc_writel,
	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
	TP_ARGS(dev, offset, value));
DEFINE_EVENT(register_access, dc_readl,
	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
	TP_ARGS(dev, offset, value));

DEFINE_EVENT(register_access, hdmi_writel,
	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
	TP_ARGS(dev, offset, value));
DEFINE_EVENT(register_access, hdmi_readl,
	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
	TP_ARGS(dev, offset, value));

DEFINE_EVENT(register_access, dsi_writel,
	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
	TP_ARGS(dev, offset, value));
DEFINE_EVENT(register_access, dsi_readl,
	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
	TP_ARGS(dev, offset, value));

DEFINE_EVENT(register_access, dpaux_writel,
	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
	TP_ARGS(dev, offset, value));
DEFINE_EVENT(register_access, dpaux_readl,
	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
	TP_ARGS(dev, offset, value));

DEFINE_EVENT(register_access, sor_writel,
	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
	TP_ARGS(dev, offset, value));
DEFINE_EVENT(register_access, sor_readl,
	TP_PROTO(struct device *dev, unsigned int offset, u32 value),
	TP_ARGS(dev, offset, value));

#endif /* DRM_TEGRA_TRACE_H */

/* This part must be outside protection */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH ../../drivers/gpu/drm/tegra
#define TRACE_INCLUDE_FILE trace
#include <trace/define_trace.h>

Annotation

• Immediate include surface: `linux/device.h`, `linux/tracepoint.h`, `trace/define_trace.h`.
• Atlas domain: Driver Families / drivers/gpu.
• 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.