drivers/hid/amd-sfh-hid/amd_sfh_pcie.c

File Facts

System

Linux kernel

Corpus path

drivers/hid/amd-sfh-hid/amd_sfh_pcie.c

Extension

.c

Size

13697 bytes

Lines

565

Domain

Driver Families

Bucket

drivers/hid

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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 an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/bitops.h
• linux/delay.h
• linux/devm-helpers.h
• linux/dma-mapping.h
• linux/dmi.h
• linux/interrupt.h
• linux/io-64-nonatomic-lo-hi.h
• linux/iopoll.h
• linux/module.h
• linux/slab.h
• linux/string_choices.h
• amd_sfh_pcie.h
• sfh1_1/amd_sfh_init.h

Detected Declarations

• function amd_sfh_wait_response_v2
• function amd_start_sensor_v2
• function amd_stop_sensor_v2
• function amd_stop_all_sensor_v2
• function amd_sfh_clear_intr_v2
• function amd_sfh_clear_intr
• function amd_sfh_irq_handler
• function amd_sfh_irq_init_v2
• function amd_sfh_dis_sts_v2
• function amd_start_sensor
• function amd_stop_sensor
• function amd_stop_all_sensors
• function amd_mp2_get_sensor_num
• function amd_mp2_pci_remove
• function mp2_select_ops
• function amd_sfh_irq_init
• function mp2_disable_intr
• function hpd_show
• function hpd_store
• function sfh_attr_is_visible
• function sfh1_1_init_work
• function sfh_init_work
• function amd_sfh_remove
• function amd_mp2_pci_probe
• function amd_sfh_shutdown
• function amd_mp2_pci_resume
• function amd_mp2_pci_suspend

Annotated Snippet

static struct pci_driver amd_mp2_pci_driver = {
	.name		= DRIVER_NAME,
	.id_table	= amd_mp2_pci_tbl,
	.probe		= amd_mp2_pci_probe,
	.driver.pm	= &amd_mp2_pm_ops,
	.shutdown	= amd_sfh_shutdown,
	.remove		= amd_sfh_remove,
	.dev_groups	= amd_sfh_groups,
};
module_pci_driver(amd_mp2_pci_driver);

MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Shyam Sundar S K <Shyam-sundar.S-k@amd.com>");
MODULE_AUTHOR("Sandeep Singh <Sandeep.singh@amd.com>");
MODULE_AUTHOR("Basavaraj Natikar <Basavaraj.Natikar@amd.com>");

Annotation

• Immediate include surface: `linux/bitops.h`, `linux/delay.h`, `linux/devm-helpers.h`, `linux/dma-mapping.h`, `linux/dmi.h`, `linux/interrupt.h`, `linux/io-64-nonatomic-lo-hi.h`, `linux/iopoll.h`.
• Detected declarations: `function amd_sfh_wait_response_v2`, `function amd_start_sensor_v2`, `function amd_stop_sensor_v2`, `function amd_stop_all_sensor_v2`, `function amd_sfh_clear_intr_v2`, `function amd_sfh_clear_intr`, `function amd_sfh_irq_handler`, `function amd_sfh_irq_init_v2`, `function amd_sfh_dis_sts_v2`, `function amd_start_sensor`.
• Atlas domain: Driver Families / drivers/hid.
• Implementation status: pattern implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.