drivers/cpufreq/armada-8k-cpufreq.c

File Facts

System

Linux kernel

Corpus path

drivers/cpufreq/armada-8k-cpufreq.c

Extension

.c

Size

5066 bytes

Lines

217

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/clk.h
• linux/cpu.h
• linux/err.h
• linux/init.h
• linux/kernel.h
• linux/module.h
• linux/of.h
• linux/platform_device.h
• linux/pm_opp.h
• linux/slab.h

Detected Declarations

• struct freq_table
• function armada_8k_get_sharing_cpus
• function for_each_present_cpu
• function armada_8k_add_opp
• function armada_8k_cpufreq_free_table
• function armada_8k_cpufreq_init
• function supported
• function armada_8k_cpufreq_exit
• module init armada_8k_cpufreq_init

Annotated Snippet

module_init(armada_8k_cpufreq_init);

static void __exit armada_8k_cpufreq_exit(void)
{
	struct freq_table *freq_tables = platform_get_drvdata(armada_8k_pdev);

	platform_device_unregister(armada_8k_pdev);
	armada_8k_cpufreq_free_table(freq_tables);
}
module_exit(armada_8k_cpufreq_exit);

MODULE_AUTHOR("Gregory Clement <gregory.clement@bootlin.com>");
MODULE_DESCRIPTION("Armada 8K cpufreq driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/clk.h`, `linux/cpu.h`, `linux/err.h`, `linux/init.h`, `linux/kernel.h`, `linux/module.h`, `linux/of.h`, `linux/platform_device.h`.
• Detected declarations: `struct freq_table`, `function armada_8k_get_sharing_cpus`, `function for_each_present_cpu`, `function armada_8k_add_opp`, `function armada_8k_cpufreq_free_table`, `function armada_8k_cpufreq_init`, `function supported`, `function armada_8k_cpufreq_exit`, `module init armada_8k_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.