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 Attributes:
  12                 Microphone Mute:
  13                                 Identifies the local microphone can be muted by hardware, no applications
  14                                 is available to capture system mic sound
  15
  16                 Camera Shutter:
  17                                 Identifies camera shutter controlled by hardware, which is a micromechanical
  18                                 shutter assembly that is built onto the camera module to block capturing images
  19                                 from outside the laptop
  20
  21                 supported:
  22                                 The privacy device is supported by this system
  23
  24                 unsupported:
  25                                 The privacy device is not supported on this system
  26
  27                 For example to check which privacy devices are supported:
  28
  29                 # cat /sys/bus/wmi/drivers/dell-privacy/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_supported_type
  30                 [Microphone Mute] [supported]
  31                 [Camera Shutter] [supported]
  32                 [ePrivacy Screen] [unsupported]
  33
  34 What:           /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_current_state
  35 Date:           Apr 2021
  36 KernelVersion:  5.13
  37 Contact:        "perry.yuan@dell.com>"
  38 Description:
  39                 Allow user space to check current dell privacy device state.
  40                 Describes the Device State class exposed by BIOS which can be
  41                 consumed by various applications interested in knowing the Privacy
  42                 feature capabilities
  43 Attributes:
  44                 muted:
  45                         Identifies the privacy device is turned off and cannot send stream to OS applications
  46
  47                 unmuted:
  48                         Identifies the privacy device is turned on ,audio or camera driver can get
  49                         stream from mic and camera module to OS applications
  50
  51                 For example to check all supported current privacy device states:
  52
  53                 # cat /sys/bus/wmi/drivers/dell-privacy/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_current_state
  54                 [Microphone] [unmuted]
  55                 [Camera Shutter] [unmuted]