Re: [GIT PULL] Ressurect the atomisp staging driver

[Mauro Carvalho Chehab <mchehab@kernel.org>]

Em Fri, 15 May 2020 11:10:21 +0200
Hans de Goede <hdegoede@redhat.com> escreveu:

> Hi all,
> 
> On 5/15/20 10:32 AM, Mauro Carvalho Chehab wrote:
> > Em Mon, 4 May 2020 15:44:20 +0200
> > Patrik Gfeller <patrik.gfeller@gmail.com> escreveu:
> >   
> >>>> Maybe this is related to my partial build (only the module to test if
> >>>> it builds). I'll now do a full build of the kernel.  
> >>>
> >>> Yeah, either that or there are some config options with different values.
> >>>
> >>> I was able to do a full build here without the above errors, although
> >>> I had to turn of some CONFIG options that were otherwise failing.  
> >>
> >> Strange - I do not get it :-/ ... can you send me the .config file and
> >> Makefile you use; probably I missed something.  
> > 
> > I posted an alternate version, with the driver from the Yocto Aero tree
> > ported to Kernel 5.7-rc2. The Kernel sources used are at this directory:
> > 
> > 	https://download.01.org/aero/deb/pool/main/l/linux-4.4.76-aero-1.3/
> > 
> > Such port is at the atomisp_yocto_v1:
> > 
> > 	https://git.linuxtv.org/mchehab/experimental.git/log/?h=atomisp_yocto_v1
> > 
> > The goal of this port is not for upstreaming it. Instead, it is meant
> > to be used just for testing, using a version that should work - at least
> > with the Intel Aero board with the Aero drone's camera (tests needed, as
> > I don't have myself such hardware). This version is ISP2401 only.
> > 
> > The firmware for it is at:
> > 	https://download.01.org/aero/deb/pool/main/f/firmware-atomisp/firmware-atomisp_0.1.orig.tar.xz
> > 
> > If the ISP revision is equal or bigger than rev 02, this file should be
> > renamed to:
> > 
> > 	shisp_2401b0_v21.bin
> > 
> > Before getting excited, this version didn't work so far on my hardware:
> > 
> > 	atomisp: Loaded firmware version 'irci_stable_candrpv_0415_20150521_0458'.
> > 	atomisp-isp2 0000:00:03.0: css load fw failed.
> > 	atomisp-isp2 0000:00:03.0: Failed to init css.
> > 
> > (I didn't try to check why it is failing yet - maybe it is just
> > some version port related issue)
> > 
> > If someone has access to the Intel Aero board, I'd appreciate if you
> > could test it and send the results. If it fails too, it would be
> > nice to have the dmesg output of this version and the dmesg from
> > a version which works.  
> 
> Mauro, first of all thank you for working on this.
> 
> I wonder if you have tried to build and run the linux-4.4.76-aero-1.3
> kernel on your T101HA ? It would be interesting to see if that one
> does (not) have the "css load fw failed" errors and who knows you
> might even be able to get that to actually show some sort of picture
> from one of the 2 sensors on the T101HA ?

Yes, I tried, but the Kernel doesn't even boot. Grub2 simply doesn't 
show any messages when trying to boot a Kernel 4.4 Kernel on it.

As this device doesn't have any physical serial ports, and the only 
USB cables I have are based on a chipset not supported by GRUB[1], I
can't see where it is failing.

[1] A side note to myself: I need to spend some time checking what
serial cables would work with grub2 and try to buy one such cable.

Thanks,
Mauro