drivers/cpufreq/airoha-cpufreq.c

File Facts

System

Linux kernel

Corpus path

drivers/cpufreq/airoha-cpufreq.c

Extension

.c

Size

3820 bytes

Lines

149

Domain

Driver Families

Bucket

drivers/cpufreq

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.
• 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/bitfield.h
• linux/cpufreq.h
• linux/module.h
• linux/platform_device.h
• linux/pm_domain.h
• linux/pm_runtime.h
• linux/slab.h
• cpufreq-dt.h

Detected Declarations

• struct airoha_cpufreq_priv
• function airoha_cpufreq_config_clks_nop
• function airoha_cpufreq_probe
• function airoha_cpufreq_remove
• function airoha_cpufreq_init
• function airoha_cpufreq_exit
• module init airoha_cpufreq_init

Annotated Snippet

module_init(airoha_cpufreq_init);

static void __exit airoha_cpufreq_exit(void)
{
	platform_device_unregister(cpufreq_pdev);
	platform_driver_unregister(&airoha_cpufreq_driver);
}
module_exit(airoha_cpufreq_exit);

MODULE_AUTHOR("Christian Marangi <ansuelsmth@gmail.com>");
MODULE_DESCRIPTION("CPUfreq driver for Airoha SoCs");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/bitfield.h`, `linux/cpufreq.h`, `linux/module.h`, `linux/platform_device.h`, `linux/pm_domain.h`, `linux/pm_runtime.h`, `linux/slab.h`, `cpufreq-dt.h`.
• Detected declarations: `struct airoha_cpufreq_priv`, `function airoha_cpufreq_config_clks_nop`, `function airoha_cpufreq_probe`, `function airoha_cpufreq_remove`, `function airoha_cpufreq_init`, `function airoha_cpufreq_exit`, `module init airoha_cpufreq_init`.
• Atlas domain: Driver Families / drivers/cpufreq.
• 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.