linux-kernel - Re: [PATCH] si2157: Add support for Logilink VG0022A.

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Date:   Thu, 3 Oct 2019 16:44:26 -0300
From:   Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
To:     Gonsolo <gonsolo@...il.com>
Cc:     JP <jp@...w.nl>, crope@....fi, Sean Young <sean@...s.org>,
        linux-media@...r.kernel.org,
        Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] si2157: Add support for Logilink VG0022A.

Em Thu, 3 Oct 2019 16:39:14 -0300
Mauro Carvalho Chehab <mchehab+samsung@...nel.org> escreveu:

> Em Thu, 3 Oct 2019 21:19:16 +0200
> Gonsolo <gonsolo@...il.com> escreveu:
> 
> > > try other firmware?
> > > http://palosaari.fi/linux/v4l-dvb/firmware/Si2168/    
> > 
> > I tried all of them. No difference.  
> 
> Maybe the vendor of this device wrote a different firmware. That happens.

Two additional comments:

1) The firmware file is likely at the Windows driver for this device
(probably using a different format). It should be possible to get
it from there. 

2) Another possibility would be to add a way to tell the si2168 driver
to not try to load a firmware, using the original one. That would
require adding a field at si2168_config to allow signalizing to it
that it should not try to load a firmware file, and add a quirk at
the af9035 that would set such flag for Logilink VG0022A.

Option (1) is the best one.

Thanks,
Mauro