mirror of https://git.proxmox.com/git/fwupd synced 2025-08-05 04:40:13 +00:00

Richard Hughes 078beafb2d Add a new internal flag to opt-in to GUID matching

It is far too easy to forget to set FWUPD_DEVICE_FLAG_NO_GUID_MATCHING for new
plugins, and without it it all works really well *until* a user has two devices
of the same type installed at the same time and then one 'disappears' for hard
to explain reasons. Typically we only need it for replug anyway!

Explicitly opt-in to this rarely-required behaviour, with the default to just
use the physical and logical IDs. Also document the update behavior for each
plugin to explain why the flag is being used.

This allows you to have two identical Unifying plugged in without one of them
being hidden from the user, at the same time allowing a HIDRAW<->USB transition
when going to and from bootloader and runtime modes.

This removes the workaround added in 99eb3f06b6.

Fixes https://github.com/fwupd/fwupd/issues/2915

2021-02-25 15:47:25 +00:00

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Jabra Support

Introduction

This plugin is used to detach the Jabra device to DFU mode.

GUID Generation

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

USB\VID_0B0E&PID_0412

Quirk use

This plugin uses the following plugin-specific quirks:

Quirk	Description	fwupd version
`JabraMagic`	Two magic bytes sent to detach into DFU mode.	1.3.3

Update Behavior

The device usually presents in runtime mode, but on detach re-enumerates with a different USB VID and PID in DFU APP mode. The device is then further detached by the dfu plugin.

On DFU attach the device again re-enumerates back to the Jabra runtime mode.

For this reason the REPLUG_MATCH_GUID internal device flag is used so that the bootloader and runtime modes are treated as the same device.

Vendor ID Security

The vendor ID is set from the USB vendor, in this instance set to USB:0x0A12

External interface access

This plugin requires read/write access to /dev/bus/usb.

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