| 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. |