drivers/video/fbdev/pxa3xx-gcu.h

File Facts

System

Linux kernel

Corpus path

drivers/video/fbdev/pxa3xx-gcu.h

Extension

.h

Size

929 bytes

Lines

40

Domain

Driver Families

Bucket

drivers/video

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/types.h

Detected Declarations

• struct pxa3xx_gcu_shared

Annotated Snippet

struct pxa3xx_gcu_shared {
	u32            buffer[PXA3XX_GCU_BUFFER_WORDS];

	bool           hw_running;

	unsigned long  buffer_phys;

	unsigned int   num_words;
	unsigned int   num_writes;
	unsigned int   num_done;
	unsigned int   num_interrupts;
	unsigned int   num_wait_idle;
	unsigned int   num_wait_free;
	unsigned int   num_idle;

	u32            magic;
};

/* Initialization and synchronization.
 * Hardware is started upon write(). */
#define PXA3XX_GCU_IOCTL_RESET		_IO('G', 0)
#define PXA3XX_GCU_IOCTL_WAIT_IDLE	_IO('G', 2)

#endif /* __PXA3XX_GCU_H__ */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct pxa3xx_gcu_shared`.
• Atlas domain: Driver Families / drivers/video.
• 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.