Where is the code for an individual or multiple drivers?

[Eric J.P.E. Davanture]

Greetings,

I am also interested in the best source code I may find in order to add 
support for HP ZBook 17 G3 integrated sensor, i.e.: ID: 138a:003f - 
Validity Sensors, Inc. - VFS495 Fingerprint Reader.

Thanks by now to the fprint great community !

Librement vôtre / Libremente suyo / Freely yours,
*Eric J.P.E. Davanture - eric.davanture at orange.fr
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-------- Forwarded Message --------
Subject: 	Where is the code for an individual or multiple drivers?
Date: 	Tue, 26 Mar 2024 08:21:47 +0000
From: 	Andy Doddington <andy at doddington.net>
To: 	fprint at lists.freedesktop.org <fprint at lists.freedesktop.org>



Hi,

Thanks for that. The documentation that you refer to looks like it was 
generated directly from code (Doxygen?) with very little explanation of 
the context or lifecycle etc. You refer to the actual driver code as 
providing useful example(s), but where is this code? I've looked at what 
I believe is the Git repo (https://github.com/keyme/libfprint), but 
can't locate the drivers.

It's a shame that fprint looks like so many other topics (e.g. printf). 
Reminds me of the time when I needed to get details of the Hilton in 
Paris ;-)

With apologies for being dense...

Kind Regards,

          Andy Doddington

fprint at lists.freedesktop.org wrote:


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> Today's Topics:
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>    1. Re: How to write an fprint driver? Plus examples if possible?
>       (Benjamin Berg)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 25 Mar 2024 09:33:14 +0100
> From: Benjamin Berg <benjamin at sipsolutions.net>
> To: Andy Doddington <andy at doddington.net>,
> "fprint at lists.freedesktop.org" <fprint at lists.freedesktop.org>
> Subject: Re: How to write an fprint driver? Plus examples if possible?
> Message-ID:
> <0d420e06adc9d8b6ef78235b8be469f7601cfc87.camel at sipsolutions.net>
> Content-Type: text/plain; charset="utf-8"
>
> On Sat, 2024-03-23 at 18:42 +0000, Andy Doddington wrote:
> >
> >
> >
> >
> > >
> > >
> > >
> > >
> > > Dear All,
> > > I note from the documentation
> > > at?https://fprint.freedesktop.org/libfprint-dev/intro.html?that:
> > > "This documentation is not aimed at developers wishing to develop
> > > and?, contribute fingerprint device drivers to libfprint".
>
> Haha, I didn't know that string existed. That is not true anymore ?
>
> I mean, look at?https://fprint.freedesktop.org/libfprint-dev/?there is
> an entire section on "Writing Drivers", not sure why you got stuck on
> the Introduction which is probably still there from libfprint 0.x times
> ;-)
>
> I think these days most of the internal API surface is documentation.
> Likely not perfect, but it should be a quite good overall. So, take a
> look at it, but also be willing to accept that there might be some
> mistakes or gaps in the documentation. In the same way as the sentence
> you quoted is definitely not true anymore.?:-)
>
> > > Given that, could you please direct me to the documentation that
> > > *is* meant to server this purpose - ideally with some example code?
> > > I have just bought a laptop that does not provide a Linux-
> > > compatible fingerprint reader, even though it has one that is used
> > > by Windows 11 (sigh...).?
>
> Please refer to the existing drivers. There is no point in creating an
> example. Take a look at a few different and go from there. To start,
> figure out if you have a match-on-host or match-on-chip device and try
> to find a similar driver from there.
>
> Benjamin
>
> > >
> > > Clearly, this is not a promise on my part, but it might be worth a
> > > try - just for the fun of it.
> > >
> > > Kind Regards,
> > >
> > >
> > > ? ? ? ? ?Andy Doddington
> > >
>
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