With kernel 6.3, the LED of my C922 Pro Stream Webcam is no longer
controllable.
With kernel 6.1 v4l2-ctl --all returns:
led1_mode 0x0a046d05 (menu) : min=0 max=3 default=0 value=0 (Off)
0: Off
1: On
2: Blink
3: Auto
but with kernel 6.3 I get:
led1_mode 0x0a046d05 (menu) : min=4 max=4 default=0 value=0
4:
Full output bellow:
Driver Info:
Driver name : uvcvideo
Card type : C922 Pro Stream Webcam
Bus info : usb-0000:00:14.0-9
Driver version : 6.3.5
Capabilities : 0x84a00001
Video Capture
Metadata Capture
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x04200001
Video Capture
Streaming
Extended Pix Format
Media Driver Info:
Driver name : uvcvideo
Model : C922 Pro Stream Webcam
Serial : 6E8DF1BF
Bus info : usb-0000:00:14.0-9
Media version : 6.3.5
Hardware revision: 0x00000016 (22)
Driver version : 6.3.5
Interface Info:
ID : 0x03000002
Type : V4L Video
Entity Info:
ID : 0x00000001 (1)
Name : C922 Pro Stream Webcam
Function : V4L2 I/O
Flags : default
Pad 0x01000007 : 0: Sink
Link 0x0200001f: from remote pad 0x100000a of entity 'Processing 3' (Video Pixel Formatter): Data, Enabled, Immutable
Priority: 2
Video input : 0 (Camera 1: ok)
Format Video Capture:
Width/Height : 160/90
Pixel Format : 'YUYV' (YUYV 4:2:2)
Field : None
Bytes per Line : 320
Size Image : 28800
Colorspace : sRGB
Transfer Function : Rec. 709
YCbCr/HSV Encoding: ITU-R 601
Quantization : Default (maps to Limited Range)
Flags :
Crop Capability Video Capture:
Bounds : Left 0, Top 0, Width 160, Height 90
Default : Left 0, Top 0, Width 160, Height 90
Pixel Aspect: 1/1
Selection Video Capture: crop_default, Left 0, Top 0, Width 160, Height 90, Flags:
Selection Video Capture: crop_bounds, Left 0, Top 0, Width 160, Height 90, Flags:
Streaming Parameters Video Capture:
Capabilities : timeperframe
Frames per second: 30.000 (30/1)
Read buffers : 0
User Controls
brightness 0x00980900 (int) : min=0 max=255 step=1 default=128 value=128
contrast 0x00980901 (int) : min=0 max=255 step=1 default=128 value=128
saturation 0x00980902 (int) : min=0 max=255 step=1 default=128 value=128
white_balance_automatic 0x0098090c (bool) : default=1 value=1
gain 0x00980913 (int) : min=0 max=255 step=1 default=0 value=0
power_line_frequency 0x00980918 (menu) : min=0 max=2 default=2 value=2 (60 Hz)
0: Disabled
1: 50 Hz
2: 60 Hz
white_balance_temperature 0x0098091a (int) : min=2000 max=6500 step=1 default=4000 value=4000 flags=inactive
sharpness 0x0098091b (int) : min=0 max=255 step=1 default=128 value=128
backlight_compensation 0x0098091c (int) : min=0 max=1 step=1 default=0 value=0
Camera Controls
auto_exposure 0x009a0901 (menu) : min=0 max=3 default=3 value=3 (Aperture Priority Mode)
1: Manual Mode
3: Aperture Priority Mode
exposure_time_absolute 0x009a0902 (int) : min=3 max=2047 step=1 default=250 value=250 flags=inactive
exposure_dynamic_framerate 0x009a0903 (bool) : default=0 value=1
pan_absolute 0x009a0908 (int) : min=-36000 max=36000 step=3600 default=0 value=0
tilt_absolute 0x009a0909 (int) : min=-36000 max=36000 step=3600 default=0 value=0
focus_absolute 0x009a090a (int) : min=0 max=250 step=5 default=0 value=0 flags=inactive
focus_automatic_continuous 0x009a090c (bool) : default=1 value=1
zoom_absolute 0x009a090d (int) : min=100 max=500 step=1 default=100 value=100
led1_mode 0x0a046d05 (menu) : min=4 max=4 default=0 value=0
4:
led1_frequency 0x0a046d06 (int) : min=0 max=255 step=1 default=0 value=255
