drivers/hwmon/lenovo-ec-sensors.c

File Facts

System

Linux kernel

Corpus path

drivers/hwmon/lenovo-ec-sensors.c

Extension

.c

Size

16207 bytes

Lines

623

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/acpi.h
• linux/bits.h
• linux/delay.h
• linux/device.h
• linux/dmi.h
• linux/err.h
• linux/hwmon.h
• linux/io.h
• linux/ioport.h
• linux/module.h
• linux/mutex.h
• linux/platform_device.h
• linux/types.h
• linux/units.h

Detected Declarations

• struct ec_sensors_data
• enum systems
• function Copyright
• function lenovo_ec_do_read_temp
• function lenovo_ec_do_read_fan
• function lenovo_ec_hwmon_read_string
• function lenovo_ec_hwmon_read
• function lenovo_ec_hwmon_is_visible
• function lenovo_ec_probe
• function lenovo_ec_init
• function lenovo_ec_exit
• module init lenovo_ec_init

Annotated Snippet

module_init(lenovo_ec_init);

static void __exit lenovo_ec_exit(void)
{
	platform_device_unregister(lenovo_ec_sensors_platform_device);
	platform_driver_unregister(&lenovo_ec_sensors_platform_driver);
}
module_exit(lenovo_ec_exit);

MODULE_AUTHOR("David Ober <dober@lenovo.com>");
MODULE_DESCRIPTION("HWMON driver for sensors accessible via EC in LENOVO motherboards");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/acpi.h`, `linux/bits.h`, `linux/delay.h`, `linux/device.h`, `linux/dmi.h`, `linux/err.h`, `linux/hwmon.h`, `linux/io.h`.
• Detected declarations: `struct ec_sensors_data`, `enum systems`, `function Copyright`, `function lenovo_ec_do_read_temp`, `function lenovo_ec_do_read_fan`, `function lenovo_ec_hwmon_read_string`, `function lenovo_ec_hwmon_read`, `function lenovo_ec_hwmon_is_visible`, `function lenovo_ec_probe`, `function lenovo_ec_init`.
• 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.