drivers/hwmon/gpd-fan.c

File Facts

System

Linux kernel

Corpus path

drivers/hwmon/gpd-fan.c

Extension

.c

Size

16622 bytes

Lines

745

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.
• 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/dmi.h
• linux/hwmon.h
• linux/io.h
• linux/ioport.h
• linux/kernel.h
• linux/module.h
• linux/platform_device.h

Detected Declarations

• struct gpd_fan_data
• struct gpd_fan_drvdata
• enum gpd_board
• enum FAN_PWM_ENABLE
• function gpd_ecram_read
• function gpd_ecram_write
• function gpd_generic_read_rpm
• function gpd_wm2_read_rpm
• function gpd_read_rpm
• function gpd_wm2_read_pwm
• function gpd_read_pwm
• function gpd_cast_pwm_range
• function gpd_generic_write_pwm
• function gpd_duo_write_pwm
• function gpd_write_pwm
• function gpd_win_mini_set_pwm_enable
• function gpd_duo_set_pwm_enable
• function gpd_wm2_set_pwm_enable
• function gpd_set_pwm_enable
• function gpd_fan_hwmon_is_visible
• function gpd_fan_hwmon_read
• function gpd_fan_hwmon_write
• function gpd_win4_init_ec
• function gpd_init_ec
• function gpd_fan_reset_hardware
• function gpd_fan_probe
• function gpd_fan_init
• function gpd_fan_exit
• module init gpd_fan_init

Annotated Snippet

module_init(gpd_fan_init);
module_exit(gpd_fan_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Cryolitia PukNgae <cryolitia@uniontech.com>");
MODULE_DESCRIPTION("GPD Devices fan control driver");

Annotation

• Immediate include surface: `linux/dmi.h`, `linux/hwmon.h`, `linux/io.h`, `linux/ioport.h`, `linux/kernel.h`, `linux/module.h`, `linux/platform_device.h`.
• Detected declarations: `struct gpd_fan_data`, `struct gpd_fan_drvdata`, `enum gpd_board`, `enum FAN_PWM_ENABLE`, `function gpd_ecram_read`, `function gpd_ecram_write`, `function gpd_generic_read_rpm`, `function gpd_wm2_read_rpm`, `function gpd_read_rpm`, `function gpd_wm2_read_pwm`.
• Atlas domain: Driver Families / drivers/hwmon.
• 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.