[fprint] How can I add a new fingerprint reader?

[Igor Filatov]

Hi Konata,

The commands your reader uses look similar to the ones from an Elan
reader 0x04f3:0x0907
that I wrote a driver for some time ago.

https://lists.freedesktop.org/archives/fprint/2017-October/000892.html
https://github.com/iafilatov/libfprint/blob/elan/libfprint/drivers/elan.h
https://github.com/iafilatov/libfprint/blob/elan/libfprint/drivers/elan.c

It's possible that your reader uses the same or a similar protocol.
The ins and outs are the same
and it also has 2-byte "pixels" in raw data.

Try adding your pid to id_table and see if it works. You'll also need
to tweak ELAN_RAW_FRAME_*
and ELAN_FRAME_* (see elan_save_frame for why there are 2 sets of
dimensions). Also note
that the driver tries to use the device as a swipe sensor because the
images are too small. If
everything else works, you can try tweaking ELAN_MIN(MAX)_FRAMES - if
it's 1 and 1,
it _should_ behave as a touch sensor.

Good luck!


On Wed, Nov 8, 2017 at 10:16 AM Konata Izumi <konachan.700 at gmail.com> wrote:
>
> Hello!
>
> I have a laptop with a Elan fingerprint reader:
>
> vid 0x04f3 pid 0x0c03
>
> I wrote a standalone app for reading fingerprints from reader,
> but i don't know what can i do to add a reader driver support to the fprintd library.
>
> Please, help me add this driver to library.
>
> Code in attach.
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