Loading...
1What: /sys/bus/acpi/devices/.../path
2Date: December 2006
3Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
4Description:
5 This attribute indicates the full path of ACPI namespace
6 object associated with the device object. For example,
7 \_SB_.PCI0.
8
9 This file is not present for device objects representing
10 fixed ACPI hardware features (like power and sleep
11 buttons).
12
13What: /sys/bus/acpi/devices/.../modalias
14Date: July 2007
15Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
16Description:
17 This attribute indicates the PNP IDs of the device object.
18 That is acpi:HHHHHHHH:[CCCCCCC:]. Where each HHHHHHHH or
19 CCCCCCCC contains device object's PNPID (_HID or _CID).
20
21What: /sys/bus/acpi/devices/.../hid
22Date: April 2005
23Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
24Description:
25 This attribute indicates the hardware ID (_HID) of the
26 device object. For example, PNP0103.
27 This file is present for device objects having the _HID
28 control method.
29
30What: /sys/bus/acpi/devices/.../description
31Date: October 2012
32Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
33Description:
34 This attribute contains the output of the device object's
35 _STR control method, if present.
36
37What: /sys/bus/acpi/devices/.../adr
38Date: October 2012
39Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
40Description:
41 This attribute contains the output of the device object's
42 _ADR control method, which is present for ACPI device
43 objects representing devices having standard enumeration
44 algorithms, such as PCI.
45
46What: /sys/bus/acpi/devices/.../uid
47Date: October 2012
48Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
49Description:
50 This attribute contains the output of the device object's
51 _UID control method, if present.
52
53What: /sys/bus/acpi/devices/.../eject
54Date: December 2006
55Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
56Description:
57 Writing 1 to this attribute will trigger hot removal of
58 this device object. This file exists for every device
59 object that has _EJ0 method.
60
61What: /sys/bus/acpi/devices/.../status
62Date: Jan, 2014
63Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
64Description:
65 (RO) Returns the ACPI device status: enabled, disabled or
66 functioning or present, if the method _STA is present.
67
68 The return value is a decimal integer representing the device's
69 status bitmap:
70
71 =========== ==================================================
72 Bit [0] Set if the device is present.
73 Bit [1] Set if the device is enabled and decoding its
74 resources.
75 Bit [2] Set if the device should be shown in the UI.
76 Bit [3] Set if the device is functioning properly (cleared
77 if device failed its diagnostics).
78 Bit [4] Set if the battery is present.
79 Bits [31:5] Reserved (must be cleared)
80 =========== ==================================================
81
82 If bit [0] is clear, then bit 1 must also be clear (a device
83 that is not present cannot be enabled).
84
85 Bit 0 can be clear (not present) with bit [3] set (device is
86 functional). This case is used to indicate a valid device for
87 which no device driver should be loaded.
88
89 More special cases are covered in the ACPI specification.
90
91What: /sys/bus/acpi/devices/.../hrv
92Date: Apr, 2016
93Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
94Description:
95 (RO) Allows users to read the hardware version of non-PCI
96 hardware, if the _HRV control method is present. It is mostly
97 useful for non-PCI devices because lspci can list the hardware
98 version for PCI devices.
1What: /sys/bus/acpi/devices/.../path
2Date: December 2006
3Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
4Description:
5 This attribute indicates the full path of ACPI namespace
6 object associated with the device object. For example,
7 \_SB_.PCI0.
8 This file is not present for device objects representing
9 fixed ACPI hardware features (like power and sleep
10 buttons).
11
12What: /sys/bus/acpi/devices/.../modalias
13Date: July 2007
14Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
15Description:
16 This attribute indicates the PNP IDs of the device object.
17 That is acpi:HHHHHHHH:[CCCCCCC:]. Where each HHHHHHHH or
18 CCCCCCCC contains device object's PNPID (_HID or _CID).
19
20What: /sys/bus/acpi/devices/.../hid
21Date: April 2005
22Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
23Description:
24 This attribute indicates the hardware ID (_HID) of the
25 device object. For example, PNP0103.
26 This file is present for device objects having the _HID
27 control method.
28
29What: /sys/bus/acpi/devices/.../description
30Date: October 2012
31Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
32Description:
33 This attribute contains the output of the device object's
34 _STR control method, if present.
35
36What: /sys/bus/acpi/devices/.../adr
37Date: October 2012
38Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
39Description:
40 This attribute contains the output of the device object's
41 _ADR control method, which is present for ACPI device
42 objects representing devices having standard enumeration
43 algorithms, such as PCI.
44
45What: /sys/bus/acpi/devices/.../uid
46Date: October 2012
47Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
48Description:
49 This attribute contains the output of the device object's
50 _UID control method, if present.
51
52What: /sys/bus/acpi/devices/.../eject
53Date: December 2006
54Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
55Description:
56 Writing 1 to this attribute will trigger hot removal of
57 this device object. This file exists for every device
58 object that has _EJ0 method.