drivers/cpufreq/sti-cpufreq.c

File Facts

System

Linux kernel

Corpus path

drivers/cpufreq/sti-cpufreq.c

Extension

.c

Size

7387 bytes

Lines

305

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/cpu.h
• linux/io.h
• linux/mfd/syscon.h
• linux/module.h
• linux/of.h
• linux/platform_device.h
• linux/pm_opp.h
• linux/regmap.h

Detected Declarations

• function sti_cpufreq_fetch_major
• function sti_cpufreq_fetch_minor
• function sti_cpufreq_fetch_regmap_field
• function sti_cpufreq_set_opp_info
• function sti_cpufreq_fetch_syscon_registers
• function sti_cpufreq_init
• module init sti_cpufreq_init

Annotated Snippet

module_init(sti_cpufreq_init);

static const struct of_device_id __maybe_unused sti_cpufreq_of_match[] = {
	{ .compatible = "st,stih407" },
	{ .compatible = "st,stih410" },
	{ .compatible = "st,stih418" },
	{ },
};
MODULE_DEVICE_TABLE(of, sti_cpufreq_of_match);

MODULE_DESCRIPTION("STMicroelectronics CPUFreq/OPP driver");
MODULE_AUTHOR("Ajitpal Singh <ajitpal.singh@st.com>");
MODULE_AUTHOR("Lee Jones <lee.jones@linaro.org>");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/cpu.h`, `linux/io.h`, `linux/mfd/syscon.h`, `linux/module.h`, `linux/of.h`, `linux/platform_device.h`, `linux/pm_opp.h`, `linux/regmap.h`.
• Detected declarations: `function sti_cpufreq_fetch_major`, `function sti_cpufreq_fetch_minor`, `function sti_cpufreq_fetch_regmap_field`, `function sti_cpufreq_set_opp_info`, `function sti_cpufreq_fetch_syscon_registers`, `function sti_cpufreq_init`, `module init sti_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.