Re: atomisp kernel driver(s)

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

Em Sat, 18 Apr 2020 17:25:49 +0200
Mauro Carvalho Chehab <mchehab+huawei@kernel.org> escreveu:

> Em Sat, 18 Apr 2020 16:39:25 +0200
> Patrik Gfeller <patrik.gfeller@gmail.com> escreveu:
> 
> > Hello Mauro et al,
> > 
> > I've recently switched to Linux, and I'm very impressed. Almost 
> > everything thing works out of the box. Only the webcam on my device does 
> > not. I did some digging and if I'm right an atomisp driver would be 
> > required. Is this correct? Below the output of lspci:
> > 
> > 00:00.0 Host bridge: Intel Corporation Atom/Celeron/Pentium Processor 
> > x5-E8000/J3xxx/N3xxx Series SoC Transaction Register (rev 36) 00:02.0 
> > VGA compatible controller: Intel Corporation Atom/Celeron/Pentium 
> > Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller (rev 36) 
> > 00:03.0 Multimedia controller: Intel Corporation Atom/Celeron/Pentium 
> > Processor x5-E8000/J3xxx/N3xxx Series Imaging Unit (rev 36) 00:0a.0 
> > Non-VGA unclassified device: Intel Corporation Device 22d8 (rev 36) 
> > 00:0b.0 Signal processing controller: Intel Corporation 
> > Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Power 
> > Management Controller (rev 36) 00:14.0 USB controller: Intel Corporation 
> > Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series USB xHCI 
> > Controller (rev 36) 00:1a.0 Encryption controller: Intel Corporation 
> > Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Trusted 
> > Execution Engine (rev 36) 00:1c.0 PCI bridge: Intel Corporation 
> > Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Express 
> > Port #1 (rev 36) 00:1f.0 ISA bridge: Intel Corporation 
> > Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCU (rev 36) 
> > 01:00.0 Network controller: Qualcomm Atheros QCA9377 802.11ac Wireless 
> > Network Adapter (rev 31)
> > 
> > According to the history it looks like the driver was removed from the 
> > kernel in 2018 and replaced with a dummy driver (to make sure power save 
> > works).
> > 
> > Is there a chance that the atomisp driver will return to the kernel? 
> > There are quite a few older tablets and 2in1 devices that would benefit. 
> > Unfortunately I do not understand the removed code (my coding skills are 
> > very basic) and can thus not help to change what ever is necessary to 
> > make it fit for the kernel :-( (does not sound like a beginner project). 
> > However - I would be glad to help out to help testing an ISP driver.
> 
> There are simply too many things there to be fixed, and nobody without
> time for it. Also, the last reports we had is that the driver was not
> working.
> 
> Unfortunately, I don't have myself any atomisp hardware, otherwise I
> could try fixing it on my spare time.

In time: not really sure if it would be a worth project, as newer Intel
hardware are coming with a different IP block (IPU3).

Thanks,
Mauro