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title: Plugin: Synaptics RMI4
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This plugin updates integrated Synaptics RMI4 devices, typically touchpads.
The HID DeviceInstanceId values are used, e.g. HIDRAW\VEN_06CB&DEV_4875.
These devices also use custom GUID values constructed using the board ID, e.g.
SYNAPTICS_RMI\TM3038-002SYNAPTICS_RMI\TM3038
The device usually presents in HID mode, and the firmware is written to the device by switching to a SERIO mode where the touchpad is nonfunctional. Once complete the device is reset to get out of SERIO mode and to load the new firmware version.
The vendor ID is set from the udev vendor, in this instance set to HIDRAW:0x06CB
The daemon will decompress the cabinet archive and extract a firmware blob in a proprietary (but documented) file format.
This plugin supports the following protocol ID:
com.synaptics.rmi
This plugin requires ioctl access to HIDIOCSFEATURE and HIDIOCGFEATURE.
This plugin has been available since fwupd version 1.3.3.
Anyone can submit a pull request to modify this plugin, but the following people should be consulted before making major or functional changes:
- David Chiu: @blueue
- Vincent Huang: @vhuag