Elan TouchPad

Introduction

This plugin allows updating Touchpad devices from Elan. Devices are enumerated using HID and raw I²C nodes. The I²C mode is used for firmware recovery.

Firmware Format

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

This plugin supports the following protocol ID:

tw.com.emc.elantp

GUID Generation

These device uses the standard DeviceInstanceId values, e.g.

HIDRAW\VEN_04F3&DEV_3010

Additionally another instance ID is added which corresponds to the module ID:

HIDRAW\VEN_04F3&DEV_3010&MOD_1234

These devices also use custom GUID values for the IC configuration, e.g.

ELANTP\ICTYPE_09

Additionally another instance ID is added which corresponds to the IC type & module ID:

ELANTP\ICTYPE_09&MOD_1234

Vendor ID Security

The vendor ID is set from the HID vendor, for example set to HIDRAW:0x17EF

Quirk use

This plugin uses the following plugin-specific quirks:

Quirk	Description	Minimum fwupd version
`ElantpIcPageCount`	The IC page count	1.4.6
`ElantpIapPassword`	The IAP password	1.4.6

External interface access

This plugin requires ioctl access to HIDIOCSFEATURE and HIDIOCGFEATURE.

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