diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-acpi')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-acpi | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-acpi b/Documentation/ABI/testing/sysfs-bus-acpi index e7898cfe5fb1..6f2b907a8013 100644 --- a/Documentation/ABI/testing/sysfs-bus-acpi +++ b/Documentation/ABI/testing/sysfs-bus-acpi @@ -1,17 +1,18 @@ What: /sys/bus/acpi/devices/.../path Date: December 2006 -Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +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 <rjw@rjwysocki.net> +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 @@ -19,7 +20,7 @@ Description: What: /sys/bus/acpi/devices/.../hid Date: April 2005 -Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +Contact: Rafael J. Wysocki <rafael@kernel.org> Description: This attribute indicates the hardware ID (_HID) of the device object. For example, PNP0103. @@ -28,14 +29,14 @@ Description: What: /sys/bus/acpi/devices/.../description Date: October 2012 -Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +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 <rjw@rjwysocki.net> +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 @@ -44,14 +45,14 @@ Description: What: /sys/bus/acpi/devices/.../uid Date: October 2012 -Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +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 <rjw@rjwysocki.net> +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 @@ -59,7 +60,7 @@ Description: What: /sys/bus/acpi/devices/.../status Date: Jan, 2014 -Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +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. @@ -67,14 +68,16 @@ Description: 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) + =========== ================================================== + 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). @@ -87,7 +90,7 @@ Description: What: /sys/bus/acpi/devices/.../hrv Date: Apr, 2016 -Contact: Rafael J. Wysocki <rjw@rjwysocki.net> +Contact: Rafael J. Wysocki <rafael@kernel.org> Description: (RO) Allows users to read the hardware version of non-PCI hardware, if the _HRV control method is present. It is mostly |