Documentation/ABI/testing/sysfs-platform-dell-privacy-wmi

   1 What:           /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_supported_type
   2 Date:           Apr 2021
   3 KernelVersion:  5.13
   4 Contact:        "<perry.yuan@dell.com>"
   5 Description:
   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
  37 What:           /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_current_state
  38 Date:           Apr 2021
  39 KernelVersion:  5.13
  40 Contact:        "<perry.yuan@dell.com>"
  41 Description:
  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]