Introduction

This plugin can upgrade the firmware on Logitech Video Collaboration products (Tap), using ioctl.

Firmware Format

The daemon will decompress the cabinet archive and extract a firmware blob in a packed binary file format.

This plugin supports the following protocol ID:

• com.logitech.hardware.tap

GUID Generation

These devices use the standard USB DeviceInstanceId values, e.g.

• HIDRAW\VEN_046D&DEV_0872
• VIDEO4LINUX\VEN_046D&DEV_0876

Quirk Use

This plugin uses the following plugin-specific quirks:

Flags=sensor-needs-reboot

Firmware updated for HDMI component, trigger composite device reboot.

Update Behavior

The peripheral firmware is deployed when the device is in normal runtime mode, and the device will reset when the new firmware has been written.

Design Notes

Vendor ID Security

The vendor ID is set from the USB vendor, in this instance set to USB:0x046D

External Interface Access

This plugin requires read/write access to /dev/bus/usb. This plugin requires the ioctl interfaces: UVCIOC_CTRL_QUERY, HIDIOCGFEATURE, HIDIOCSFEATURE, HIDIOCGINPUT.

Version Considerations

This plugin has been available since fwupd version 1.9.2.

Owners

Anyone can submit a pull request to modify this plugin, but the following people should be consulted before making major or functional changes:

• Sanjay Sheth: vcdmp