drivers/platform/x86/lenovo/wmi-helpers.h

File Facts

System

Linux kernel

Corpus path

drivers/platform/x86/lenovo/wmi-helpers.h

Extension

.h

Size

1089 bytes

Lines

42

Domain

Driver Families

Bucket

drivers/platform

Inferred role

Driver Families: implementation source

Status

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

Dependency Surface

• linux/types.h

Detected Declarations

• struct device
• struct notifier_block
• struct wmi_device
• struct wmi_method_args_32
• enum lwmi_event_type
• enum thermal_mode

Annotated Snippet

struct wmi_method_args_32 {
	u32 arg0;
	u32 arg1;
};

enum lwmi_event_type {
	LWMI_GZ_GET_THERMAL_MODE = 0x01,
};

enum thermal_mode {
	LWMI_GZ_THERMAL_MODE_NONE =	   0x00,
	LWMI_GZ_THERMAL_MODE_QUIET =	   0x01,
	LWMI_GZ_THERMAL_MODE_BALANCED =	   0x02,
	LWMI_GZ_THERMAL_MODE_PERFORMANCE = 0x03,
	LWMI_GZ_THERMAL_MODE_EXTREME =	   0xE0, /* Ver 6+ */
	LWMI_GZ_THERMAL_MODE_CUSTOM =	   0xFF,
};

int lwmi_dev_evaluate_int(struct wmi_device *wdev, u8 instance, u32 method_id,
			  unsigned char *buf, size_t size, u32 *retval);

int lwmi_tm_register_notifier(struct notifier_block *nb);
int lwmi_tm_unregister_notifier(struct notifier_block *nb);
int devm_lwmi_tm_register_notifier(struct device *dev,
				   struct notifier_block *nb);
int lwmi_tm_notifier_call(enum thermal_mode *mode);

#endif /* !_LENOVO_WMI_HELPERS_H_ */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct device`, `struct notifier_block`, `struct wmi_device`, `struct wmi_method_args_32`, `enum lwmi_event_type`, `enum thermal_mode`.
• Atlas domain: Driver Families / drivers/platform.
• Implementation status: source 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.