drivers/media/platform/samsung/s5p-mfc/s5p_mfc_iommu.h

File Facts

System

Linux kernel

Corpus path

drivers/media/platform/samsung/s5p-mfc/s5p_mfc_iommu.h

Extension

.h

Size

513 bytes

Lines

29

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

• linux/iommu.h

Detected Declarations

• function Copyright
• function exynos_is_iommu_available

Annotated Snippet

#ifndef S5P_MFC_IOMMU_H_
#define S5P_MFC_IOMMU_H_

#if defined(CONFIG_EXYNOS_IOMMU)

#include <linux/iommu.h>

static inline bool exynos_is_iommu_available(struct device *dev)
{
	return dev_iommu_priv_get(dev) != NULL;
}

#else

static inline bool exynos_is_iommu_available(struct device *dev)
{
	return false;
}

#endif

#endif /* S5P_MFC_IOMMU_H_ */

Annotation

• Immediate include surface: `linux/iommu.h`.
• Detected declarations: `function Copyright`, `function exynos_is_iommu_available`.
• 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.