drivers/gpu/drm/xe/xe_i2c.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/xe/xe_i2c.h

Extension

.h

Size

1799 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/bits.h
• linux/notifier.h
• linux/types.h
• linux/workqueue.h

Detected Declarations

• struct device
• struct fwnode_handle
• struct i2c_adapter
• struct i2c_client
• struct irq_domain
• struct platform_device
• struct xe_device
• struct xe_mmio
• struct xe_i2c_endpoint
• struct xe_i2c
• function xe_i2c_probe
• function xe_i2c_present
• function xe_i2c_irq_handler

Annotated Snippet

struct xe_i2c_endpoint {
	u8 cookie;
	u8 capabilities;
	u16 addr[XE_I2C_MAX_CLIENTS];
};

struct xe_i2c {
	struct fwnode_handle *adapter_node;
	struct platform_device *pdev;
	struct i2c_adapter *adapter;
	struct i2c_client *client[XE_I2C_MAX_CLIENTS];

	struct notifier_block bus_notifier;
	struct work_struct work;

	struct irq_domain *irqdomain;
	int adapter_irq;

	struct xe_i2c_endpoint ep;
	struct device *drm_dev;

	struct xe_mmio *mmio;
};

#if IS_ENABLED(CONFIG_I2C)
int xe_i2c_probe(struct xe_device *xe);
bool xe_i2c_present(struct xe_device *xe);
void xe_i2c_irq_handler(struct xe_device *xe, u32 master_ctl);
void xe_i2c_irq_postinstall(struct xe_device *xe);
void xe_i2c_irq_reset(struct xe_device *xe);
void xe_i2c_pm_suspend(struct xe_device *xe);
void xe_i2c_pm_resume(struct xe_device *xe, bool d3cold);
#else
static inline int xe_i2c_probe(struct xe_device *xe) { return 0; }
static inline bool xe_i2c_present(struct xe_device *xe) { return false; }
static inline void xe_i2c_irq_handler(struct xe_device *xe, u32 master_ctl) { }
static inline void xe_i2c_irq_postinstall(struct xe_device *xe) { }
static inline void xe_i2c_irq_reset(struct xe_device *xe) { }
static inline void xe_i2c_pm_suspend(struct xe_device *xe) { }
static inline void xe_i2c_pm_resume(struct xe_device *xe, bool d3cold) { }
#endif

#endif

Annotation

• Immediate include surface: `linux/bits.h`, `linux/notifier.h`, `linux/types.h`, `linux/workqueue.h`.
• Detected declarations: `struct device`, `struct fwnode_handle`, `struct i2c_adapter`, `struct i2c_client`, `struct irq_domain`, `struct platform_device`, `struct xe_device`, `struct xe_mmio`, `struct xe_i2c_endpoint`, `struct xe_i2c`.
• 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.