drivers/cpufreq/pxa2xx-cpufreq.c
Source file repositories/reference/linux-study-clean/drivers/cpufreq/pxa2xx-cpufreq.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/cpufreq/pxa2xx-cpufreq.c- Extension
.c- Size
- 8872 bytes
- Lines
- 322
- 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/kernel.hlinux/module.hlinux/sched.hlinux/init.hlinux/cpufreq.hlinux/err.hlinux/regulator/consumer.hlinux/soc/pxa/cpu.hlinux/io.h
Detected Declarations
struct pxa_cpufreq_datastruct pxa_freqsfunction pxa_cpufreq_change_voltagefunction pxa_cpufreq_init_voltagesfunction pxa_cpufreq_change_voltagefunction pxa_cpufreq_init_voltagesfunction pxa27x_guess_max_freqfunction pxa_cpufreq_getfunction pxa_set_targetfunction pxa_cpufreq_initfunction pxa_cpu_initfunction pxa_cpu_exitmodule init pxa_cpu_init
Annotated Snippet
module_init(pxa_cpu_init);
module_exit(pxa_cpu_exit);Annotation
- Immediate include surface: `linux/kernel.h`, `linux/module.h`, `linux/sched.h`, `linux/init.h`, `linux/cpufreq.h`, `linux/err.h`, `linux/regulator/consumer.h`, `linux/soc/pxa/cpu.h`.
- Detected declarations: `struct pxa_cpufreq_data`, `struct pxa_freqs`, `function pxa_cpufreq_change_voltage`, `function pxa_cpufreq_init_voltages`, `function pxa_cpufreq_change_voltage`, `function pxa_cpufreq_init_voltages`, `function pxa27x_guess_max_freq`, `function pxa_cpufreq_get`, `function pxa_set_target`, `function pxa_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.