drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c

File Facts

System

Linux kernel

Corpus path

drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c

Extension

.c

Size

4512 bytes

Lines

177

Domain

Driver Families

Bucket

drivers/hid

Inferred role

Driver Families: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/amd-pmf-io.h
• linux/io-64-nonatomic-lo-hi.h
• linux/iopoll.h
• amd_sfh_interface.h

Detected Declarations

• function amd_sfh_wait_response
• function amd_start_sensor
• function amd_stop_sensor
• function amd_stop_all_sensor
• function sfh_deinit_emp2
• function sfh_interface_init
• function amd_sfh_mode_info
• function amd_sfh_hpd_info
• function amd_sfh_als_info
• function amd_get_sfh_info
• export amd_get_sfh_info

Annotated Snippet

switch (op) {
		case MT_HPD:
			return amd_sfh_hpd_info(&sfh_info->user_present);
		case MT_ALS:
			return amd_sfh_als_info(&sfh_info->ambient_light);
		case MT_SRA:
			return amd_sfh_mode_info(&sfh_info->platform_type,
						 &sfh_info->laptop_placement);
		}
	}
	return -EINVAL;
}
EXPORT_SYMBOL_GPL(amd_get_sfh_info);

Annotation

• Immediate include surface: `linux/amd-pmf-io.h`, `linux/io-64-nonatomic-lo-hi.h`, `linux/iopoll.h`, `amd_sfh_interface.h`.
• Detected declarations: `function amd_sfh_wait_response`, `function amd_start_sensor`, `function amd_stop_sensor`, `function amd_stop_all_sensor`, `function sfh_deinit_emp2`, `function sfh_interface_init`, `function amd_sfh_mode_info`, `function amd_sfh_hpd_info`, `function amd_sfh_als_info`, `function amd_get_sfh_info`.
• Atlas domain: Driver Families / drivers/hid.
• Implementation status: integration 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.