Plugin: Synaptics VMM9xxxx
Introduction
This plugin updates the VMM9xxxx MST devices from Synaptics.
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.synaptics.mst-hid
GUID Generation
These devices use the standard USB DeviceInstanceId values, e.g.
USB\VID_06CB&PID_9430
These devices also use custom GUID values using the board ID and customer ID values which are different for each customer and hardware design, e.g.
USB\VID_06CB&PID_9430&BID_56
USB\VID_06CB&PID_9430&BID_56&CID_78
Update Behavior
The device storage banks are erased, and each block from the firmware is written and then finally activated. Calculating the CRC manually is no longer required.
Vendor ID Security
The vendor ID is set from the USB vendor, in this instance set to USB:0x06CB
and also from the
customer ID (if set), e.g. SYNA:0x12
Quirk Use
This plugin uses the following plugin-specific quirks:
Flags=manual-restart-required
The device is not capable of self-rebooting, and we have to ask the user to replug the power cable.
Since: 1.9.20
External Interface Access
This plugin requires read/write access to /dev/bus/usb
.
Version Considerations
This plugin has been available since fwupd version 1.9.20
.
Owners
Anyone can submit a pull request to modify this plugin, but the following people should be consulted before making major or functional changes:
- Apollo Ling:
ApolloLing