tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1What: /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919[-X]/dell_privacy_supported_type
2Date: Apr 2021
3KernelVersion: 5.13
4Contact: "<perry.yuan@dell.com>"
5Description:
6 Display which dell hardware level privacy devices are supported
7 “Dell Privacy” is a set of HW, FW, and SW features to enhance
8 Dell’s commitment to platform privacy for MIC, Camera, and
9 ePrivacy screens.
10 The supported hardware privacy devices are:
11
12 Attributes:
13 Microphone Mute:
14 Identifies the local microphone can be muted by hardware, no applications
15 is available to capture system mic sound
16
17 Camera Shutter:
18 Identifies camera shutter controlled by hardware, which is a micromechanical
19 shutter assembly that is built onto the camera module to block capturing images
20 from outside the laptop
21
22 Values:
23
24 supported:
25 The privacy device is supported by this system
26
27 unsupported:
28 The privacy device is not supported on this system
29
30 For example to check which privacy devices are supported::
31
32 # cat /sys/bus/wmi/drivers/dell-privacy/6932965F-1671-4CEB-B988-D3AB0A901919*/dell_privacy_supported_type
33 [Microphone Mute] [supported]
34 [Camera Shutter] [supported]
35 [ePrivacy Screen] [unsupported]
36
37What: /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919[-X]/dell_privacy_current_state
38Date: Apr 2021
39KernelVersion: 5.13
40Contact: "<perry.yuan@dell.com>"
41Description:
42 Allow user space to check current dell privacy device state.
43 Describes the Device State class exposed by BIOS which can be
44 consumed by various applications interested in knowing the Privacy
45 feature capabilities
46
47 Attributes:
48 Microphone:
49 Identifies the local microphone can be muted by hardware, no applications
50 is available to capture system mic sound
51
52 Camera Shutter:
53 Identifies camera shutter controlled by hardware, which is a micromechanical
54 shutter assembly that is built onto the camera module to block capturing images
55 from outside the laptop
56
57 Values:
58 muted:
59 Identifies the privacy device is turned off
60 and cannot send stream to OS applications
61
62 unmuted:
63 Identifies the privacy device is turned on,
64 audio or camera driver can get stream from mic
65 and camera module to OS applications
66
67 For example to check all supported current privacy device states::
68
69 # cat /sys/bus/wmi/drivers/dell-privacy/6932965F-1671-4CEB-B988-D3AB0A901919*/dell_privacy_current_state
70 [Microphone] [unmuted]
71 [Camera Shutter] [unmuted]