96 lines
3.3 KiB
Plaintext
96 lines
3.3 KiB
Plaintext
What: /sys/bus/acpi/devices/.../path
|
||
Date: December 2006
|
||
Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
|
||
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 <rjw@rjwysocki.net>
|
||
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 <rjw@rjwysocki.net>
|
||
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 <rjw@rjwysocki.net>
|
||
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 <rjw@rjwysocki.net>
|
||
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 <rjw@rjwysocki.net>
|
||
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 <rjw@rjwysocki.net>
|
||
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 <rjw@rjwysocki.net>
|
||
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:
|
||
|
||
Bit [0] – Set if the device is present.
|
||
Bit [1] – Set if the device is enabled and decoding its
|
||
resources.
|
||
Bit [2] – Set if the device should be shown in the UI.
|
||
Bit [3] – Set if the device is functioning properly (cleared if
|
||
device failed its diagnostics).
|
||
Bit [4] – Set if the battery is present.
|
||
Bits [31:5] – Reserved (must be cleared)
|
||
|
||
If bit [0] is clear, then bit 1 must also be clear (a device
|
||
that is not present cannot be enabled).
|
||
|
||
Bit 0 can be clear (not present) with bit [3] set (device is
|
||
functional). This case is used to indicate a valid device for
|
||
which no device driver should be loaded.
|
||
|
||
More special cases are covered in the ACPI specification.
|
||
|
||
What: /sys/bus/acpi/devices/.../hrv
|
||
Date: Apr, 2016
|
||
Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
|
||
Description:
|
||
(RO) Allows users to read the hardware version of non-PCI
|
||
hardware, if the _HRV control method is present. It is mostly
|
||
useful for non-PCI devices because lspci can list the hardware
|
||
version for PCI devices.
|