drivers/hwmon/acpi_power_meter.c

File Facts

System

Linux kernel

Corpus path

drivers/hwmon/acpi_power_meter.c

Extension

.c

Size

25659 bytes

Lines

1051

Domain

Driver Families

Bucket

drivers/hwmon

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/module.h
• linux/hwmon.h
• linux/hwmon-sysfs.h
• linux/jiffies.h
• linux/mutex.h
• linux/dmi.h
• linux/slab.h
• linux/kdev_t.h
• linux/sched.h
• linux/time.h
• linux/err.h
• linux/acpi.h
• linux/platform_device.h

Detected Declarations

• struct acpi_power_meter_capabilities
• struct acpi_power_meter_resource
• function can_cap_in_hardware
• function update_avg_interval
• function update_cap
• function set_acpi_trip
• function update_meter
• function remove_domain_devices
• function read_domain_devices
• function set_trip
• function set_cap
• function set_avg_interval
• function get_power_alarm_state
• function power_meter_is_visible
• function power_meter_read
• function power_meter_write
• function power1_average_max_store
• function power1_average_min_store
• function power1_average_min_show
• function power1_average_max_show
• function power1_cap_hyst_show
• function power1_accuracy_show
• function power1_is_battery_show
• function power1_model_number_show
• function power1_oem_info_show
• function power1_serial_number_show
• function power_extra_is_visible
• function free_capabilities
• function read_capabilities
• function acpi_power_meter_notify
• function acpi_power_meter_probe
• function acpi_power_meter_remove
• function acpi_power_meter_resume
• function enable_cap_knobs
• function acpi_power_meter_init
• function acpi_power_meter_exit
• module init acpi_power_meter_init

Annotated Snippet

module_init(acpi_power_meter_init);
module_exit(acpi_power_meter_exit);

Annotation

• Immediate include surface: `linux/module.h`, `linux/hwmon.h`, `linux/hwmon-sysfs.h`, `linux/jiffies.h`, `linux/mutex.h`, `linux/dmi.h`, `linux/slab.h`, `linux/kdev_t.h`.
• Detected declarations: `struct acpi_power_meter_capabilities`, `struct acpi_power_meter_resource`, `function can_cap_in_hardware`, `function update_avg_interval`, `function update_cap`, `function set_acpi_trip`, `function update_meter`, `function remove_domain_devices`, `function read_domain_devices`, `function set_trip`.
• Atlas domain: Driver Families / drivers/hwmon.
• 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.