drivers/clk/qcom/clk-rpm.c

File Facts

System

Linux kernel

Corpus path

drivers/clk/qcom/clk-rpm.c

Extension

.c

Size

15830 bytes

Lines

610

Domain

Driver Families

Bucket

drivers/clk

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/clk-provider.h
• linux/err.h
• linux/export.h
• linux/init.h
• linux/kernel.h
• linux/module.h
• linux/mutex.h
• linux/mfd/qcom_rpm.h
• linux/of.h
• linux/platform_device.h
• dt-bindings/mfd/qcom-rpm.h
• dt-bindings/clock/qcom,rpmcc.h

Detected Declarations

• struct rpm_cc
• struct clk_rpm
• struct rpm_cc
• struct rpm_clk_desc
• function clk_rpm_handoff
• function clk_rpm_set_rate_active
• function clk_rpm_set_rate_sleep
• function to_active_sleep
• function clk_rpm_prepare
• function clk_rpm_unprepare
• function clk_rpm_xo_prepare
• function clk_rpm_xo_unprepare
• function clk_rpm_fixed_prepare
• function clk_rpm_fixed_unprepare
• function clk_rpm_set_rate
• function clk_rpm_determine_rate
• function clk_rpm_recalc_rate
• function rpm_clk_probe
• function rpm_clk_init
• function rpm_clk_exit
• module init rpm_clk_init

Annotated Snippet

core_initcall(rpm_clk_init);

static void __exit rpm_clk_exit(void)
{
	platform_driver_unregister(&rpm_clk_driver);
}
module_exit(rpm_clk_exit);

MODULE_DESCRIPTION("Qualcomm RPM Clock Controller Driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:qcom-clk-rpm");

Annotation

• Immediate include surface: `linux/cleanup.h`, `linux/clk-provider.h`, `linux/err.h`, `linux/export.h`, `linux/init.h`, `linux/kernel.h`, `linux/module.h`, `linux/mutex.h`.
• Detected declarations: `struct rpm_cc`, `struct clk_rpm`, `struct rpm_cc`, `struct rpm_clk_desc`, `function clk_rpm_handoff`, `function clk_rpm_set_rate_active`, `function clk_rpm_set_rate_sleep`, `function to_active_sleep`, `function clk_rpm_prepare`, `function clk_rpm_unprepare`.
• Atlas domain: Driver Families / drivers/clk.
• 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.