drivers/pmdomain/qcom/rpmhpd.c

File Facts

System

Linux kernel

Corpus path

drivers/pmdomain/qcom/rpmhpd.c

Extension

.c

Size

30002 bytes

Lines

1237

Domain

Driver Families

Bucket

drivers/pmdomain

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• 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/cleanup.h
• linux/err.h
• linux/init.h
• linux/kernel.h
• linux/module.h
• linux/mutex.h
• linux/pm_domain.h
• linux/slab.h
• linux/of.h
• linux/platform_device.h
• linux/pm_opp.h
• soc/qcom/cmd-db.h
• soc/qcom/rpmh.h
• dt-bindings/power/qcom-rpmpd.h
• dt-bindings/power/qcom,rpmhpd.h

Detected Declarations

• struct rpmhpd
• struct rpmhpd_desc
• function rpmhpd_send_corner
• function to_active_sleep
• function votes
• function rpmhpd_power_on
• function rpmhpd_power_off
• function rpmhpd_set_performance_state
• function rpmhpd_update_level_mapping
• function rpmhpd_probe
• function rpmhpd_sync_state
• function rpmhpd_init
• module init rpmhpd_init

Annotated Snippet

core_initcall(rpmhpd_init);

MODULE_DESCRIPTION("Qualcomm Technologies, Inc. RPMh Power Domain Driver");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/cleanup.h`, `linux/err.h`, `linux/init.h`, `linux/kernel.h`, `linux/module.h`, `linux/mutex.h`, `linux/pm_domain.h`, `linux/slab.h`.
• Detected declarations: `struct rpmhpd`, `struct rpmhpd_desc`, `function rpmhpd_send_corner`, `function to_active_sleep`, `function votes`, `function rpmhpd_power_on`, `function rpmhpd_power_off`, `function rpmhpd_set_performance_state`, `function rpmhpd_update_level_mapping`, `function rpmhpd_probe`.
• Atlas domain: Driver Families / drivers/pmdomain.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.