On Sat, 20 Apr 2019, Tobias Auerochs wrote: > The touchpad on the cover keyboard for the Acer Switch 3 and 5 does not > work as-is under Linux. Both devices have the same usb id for the cover > keyboard. > > The kernel correctly assigns the hid-rmi driver to the device using usbhid > for transport. > Any attempts of hid-rmi to talk to the device using hid_hw_output_report > fail however as usbhid does not have a working urbout due to the lack of > any out endpoints. > > Looking through Wireshark usbmon recordings from the Windows Synaptics > driver for this computer running inside of QEMU shows that it should be > using SET_REPORT requests instead. > > This replaces the hid_hw_output_report in hid-rmi with a > hid_hw_raw_request for this device, which is at least enough to enable > the kernel to get working multi-touch input. Applied, thanks. -- Jiri Kosina SUSE Labs
