Documentation/ABI/testing/sysfs-bus-acpi

Source file repositories/reference/linux-study-clean/Documentation/ABI/testing/sysfs-bus-acpi

File Facts

System
Linux kernel
Corpus path
Documentation/ABI/testing/sysfs-bus-acpi
Extension
[no extension]
Size
3496 bytes
Lines
99
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: Documentation
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

What:		/sys/bus/acpi/devices/.../path
Date:		December 2006
Contact:	Rafael J. Wysocki <rafael@kernel.org>
Description:
		This attribute indicates the full path of ACPI namespace
		object associated with the device object.  For example,
		\_SB_.PCI0.

		This file is not present for device objects representing
		fixed ACPI hardware features (like power and sleep
		buttons).

What:		/sys/bus/acpi/devices/.../modalias
Date:		July 2007
Contact:	Rafael J. Wysocki <rafael@kernel.org>
Description:
		This attribute indicates the PNP IDs of the device object.
		That is acpi:HHHHHHHH:[CCCCCCC:].  Where each HHHHHHHH or
		CCCCCCCC contains device object's PNPID (_HID or _CID).

What:		/sys/bus/acpi/devices/.../hid
Date:		April 2005
Contact:	Rafael J. Wysocki <rafael@kernel.org>
Description:
		This attribute indicates the hardware ID (_HID) of the
		device object.  For example, PNP0103.
		This file is present for device objects having the _HID
		control method.

What:		/sys/bus/acpi/devices/.../description
Date:		October 2012
Contact:	Rafael J. Wysocki <rafael@kernel.org>
Description:
		This attribute contains the output of the device object's
		_STR control method, if present.

What:		/sys/bus/acpi/devices/.../adr
Date:		October 2012
Contact:	Rafael J. Wysocki <rafael@kernel.org>
Description:
		This attribute contains the output of the device object's
		_ADR control method, which is present for ACPI device
		objects representing devices having standard enumeration
		algorithms, such as PCI.

What:		/sys/bus/acpi/devices/.../uid
Date:		October 2012
Contact:	Rafael J. Wysocki <rafael@kernel.org>
Description:
		This attribute contains the output of the device object's
		_UID control method, if present.

What:		/sys/bus/acpi/devices/.../eject
Date:		December 2006
Contact:	Rafael J. Wysocki <rafael@kernel.org>
Description:
		Writing 1 to this attribute will trigger hot removal of
		this device object.  This file exists for every device
		object that has _EJ0 method.

What:		/sys/bus/acpi/devices/.../status
Date:		Jan, 2014
Contact:	Rafael J. Wysocki <rafael@kernel.org>
Description:
		(RO) Returns the ACPI device status: enabled, disabled or
		functioning or present, if the method _STA is present.

		The return value is a decimal integer representing the device's
		status bitmap:

Annotation

Implementation Notes