mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-08-27 06:50:37 +00:00
c9de2e5c15
The WMI driver core might append an ID to the WMI device name to avoid name collisions in case multiple WMI devices with the same GUID are present. Update all sysfs path referring to WMI devices to inform users about this important detail. Signed-off-by: Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20250610055526.23688-1-W_Armin@gmx.de Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
72 lines
2.5 KiB
Plaintext
72 lines
2.5 KiB
Plaintext
What: /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919[-X]/dell_privacy_supported_type
|
||
Date: Apr 2021
|
||
KernelVersion: 5.13
|
||
Contact: "<perry.yuan@dell.com>"
|
||
Description:
|
||
Display which dell hardware level privacy devices are supported
|
||
“Dell Privacy” is a set of HW, FW, and SW features to enhance
|
||
Dell’s commitment to platform privacy for MIC, Camera, and
|
||
ePrivacy screens.
|
||
The supported hardware privacy devices are:
|
||
|
||
Attributes:
|
||
Microphone Mute:
|
||
Identifies the local microphone can be muted by hardware, no applications
|
||
is available to capture system mic sound
|
||
|
||
Camera Shutter:
|
||
Identifies camera shutter controlled by hardware, which is a micromechanical
|
||
shutter assembly that is built onto the camera module to block capturing images
|
||
from outside the laptop
|
||
|
||
Values:
|
||
|
||
supported:
|
||
The privacy device is supported by this system
|
||
|
||
unsupported:
|
||
The privacy device is not supported on this system
|
||
|
||
For example to check which privacy devices are supported::
|
||
|
||
# cat /sys/bus/wmi/drivers/dell-privacy/6932965F-1671-4CEB-B988-D3AB0A901919*/dell_privacy_supported_type
|
||
[Microphone Mute] [supported]
|
||
[Camera Shutter] [supported]
|
||
[ePrivacy Screen] [unsupported]
|
||
|
||
What: /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919[-X]/dell_privacy_current_state
|
||
Date: Apr 2021
|
||
KernelVersion: 5.13
|
||
Contact: "<perry.yuan@dell.com>"
|
||
Description:
|
||
Allow user space to check current dell privacy device state.
|
||
Describes the Device State class exposed by BIOS which can be
|
||
consumed by various applications interested in knowing the Privacy
|
||
feature capabilities
|
||
|
||
Attributes:
|
||
Microphone:
|
||
Identifies the local microphone can be muted by hardware, no applications
|
||
is available to capture system mic sound
|
||
|
||
Camera Shutter:
|
||
Identifies camera shutter controlled by hardware, which is a micromechanical
|
||
shutter assembly that is built onto the camera module to block capturing images
|
||
from outside the laptop
|
||
|
||
Values:
|
||
muted:
|
||
Identifies the privacy device is turned off
|
||
and cannot send stream to OS applications
|
||
|
||
unmuted:
|
||
Identifies the privacy device is turned on,
|
||
audio or camera driver can get stream from mic
|
||
and camera module to OS applications
|
||
|
||
For example to check all supported current privacy device states::
|
||
|
||
# cat /sys/bus/wmi/drivers/dell-privacy/6932965F-1671-4CEB-B988-D3AB0A901919*/dell_privacy_current_state
|
||
[Microphone] [unmuted]
|
||
[Camera Shutter] [unmuted]
|