[105a:9800] FPC fingerprint is not supported.

[Bin Li]

In libfprint it currently didn't support FPC's sensors, and I reported an upstream bug, and the 9800 was added into the Unsupported list too.

  { .vid = 0x10a5, .pid = 0x0007 },
  { .vid = 0x10a5, .pid = 0x9200 },

Reported an upstream bug.

Bus 003 Device 002: ID 10a5:9800 FPC FPC Sensor Controller L:0001 FW:16.26.23.14

https://gitlab.freedesktop.org/libfprint/libfprint/-/issues/466

[Bin Li (binli)]

What I could found is the fpc1020 driver in android kernel, so we need driver from vendor.

https://gitlab.freedesktop.org/libfprint/libfprint/-/issues/137
https://github.com/SanniZ/fpc1020-driver
https://github.com/MiCode/Xiaomi_Kernel_OpenSource/tree/mido-n-oss/drivers/input/fingerprint/fpc
https://github.com/MoKee/android_kernel_sony_sdm660/tree/c3b11878c32e16dc6f474f639af1e98c04a7ae3d/drivers/input/misc/fpc1020

[Sebastien Bacher (seb128)]

If we have no drivers for it at the moment there isn't much we can do from libfprint right?

[Bin Li (binli)]

@seb128,

 Yes, it's, I did request the driver from vendor, will post it later if I get it. Thanks!

[Bin Li (binli)]

FPC update: FPC need 6 months for development, expected to release Sep.

[Marco Trevisan (Treviño) (3v1n0)]

We have fpc support for moc devices 0xFFE0/A305/D805/DA04/D205 now:

 - https://gitlab.freedesktop.org/libfprint/libfprint/-/merge_requests/375

More devices will be supported by the MHO driver including 0x9800:
 - https://gitlab.freedesktop.org/libfprint/libfprint/-/merge_requests/396

However for that specific MR we're currently missing a library.

[Marco Trevisan (Treviño) (3v1n0)]

It seems that their MOC driver needs an external library that is proprietary, so it's probably needed to build it as a TOD driver instead.

[Marco Trevisan (Treviño) (3v1n0)]

OFC, keeping the driver part open-source, while the library they use can be kept proprietary.

[Bin Li (binli)]

Hi Marco,

I got a testing driver from FPC, it works fine in my side.

$ sudo add-apt-repository ppa:libfprint-tod1-group/ppa
$ sudo apt update
$ ubuntu-drivers list
libfprint-2-tod1-fpc
$ sudo apt install libfprint-2-tod1-fpc
$ sudo reboot

After boot up, I could enable fingerprint and use it to login. Just some
warning logs in system.

$ journalctl -b 0 | grep fprintd
May 25 05:05:28 Jing-Intel-2 fprintd[1684]: Library /usr/lib/x86_64-linux-gnu/libfprint-2/tod-1/libfprint-tod-fpcbep-9800-0.0.2.so doesn't expose the required entry point symbol
May 25 05:05:28 Jing-Intel-2 fprintd[1684]: libusb: error [udev_hotplug_event] ignoring udev action change
May 25 05:05:28 Jing-Intel-2 fprintd[1684]: libusb: error [udev_hotplug_event] ignoring udev action change
May 25 05:05:59 Jing-Intel-2 systemd[1]: fprintd.service: Deactivated successfully.

Do you have any concerns that the FPC provide two so files?

libfprint-tod-fpcbep-9800-0.0.2.so is algorithm part which is called by libfprint-2-tod1-fpc-9800-0.0.2.so, the later one has tod interface.

Do you know the udev rules error above? The rules sounds good in my side. Thanks!

SUBSYSTEM=="usb", ATTRS{idVendor}=="10a5", ATTRS{idProduct}=="9800", ATTRS{dev}=="*", TEST=="power/control", ATTR{power/control}="auto"
SUBSYSTEM=="usb", ATTRS{idVendor}=="10a5", ATTRS{idProduct}=="9800", ENV{LIBFPRINT_DRIVER}="FPC fingerprint sensors"