By the way, modern touchpads support HID feature reports to disable surface and buttons. Usages 0x57 / 0x58 in the Digitizer page. The Linux driver is aware of

By the way, modern touchpads support HID feature reports to disable surface and buttons. Usages 0x57 / 0x58 in the Digitizer page. The Linux driver is aware of those but uses them only to ensure that everything is turned on. I think that it really should expose an interface for a user to control those bits.