Re: [Ksummit-discuss] [CORE TOPIC] Mainline kernel on a cellphone

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

On Wednesday 26 August 2015 13:52:23 Krzysztof Kozlowski wrote:
> On 26.08.2015 13:25, Sudip Mukherjee wrote:
> > On Wed, Aug 26, 2015 at 10:22:11AM +0900, Krzysztof Kozlowski wrote:
> >> On 26.08.2015 03:59, Tim Bird wrote:
> >>> On 07/29/2015 12:40 AM, Pavel Machek wrote:
> > <snip>
> > 
> >> 4. Their coding style is so different that I can't imagine mainlining
> >> them into staging area... Recently I was digging into Mali400 and it was
> >> literally hurting my eyes to see that coding style. It's like opposite
> >> of kernel.
> > 
> > Hi,
> > I have seen Mali code once few months ago and true that the styling
> > there is exactly opposite of what we use. But anyway, I hope including
> > that in staging will be beneficial for all of you.
> 
> Looking at the list of SoCs using Mali:
> https://en.wikipedia.org/wiki/Mali_(GPU)
> then clearly a lot of vendors could benefit from that. I would be happy
> to see Mali in staging/mainline.
> 
> > And I can also guess
> > that it will be a waste of your time if you add it to staging and
> > refactor the code ultimately merging it to the main part of the kerel.
> > 
> > I am not an experienced Mali developer but if you all are ok with it then
> > I can take up the task of adding it to staging. But I will need to have
> > a board for that as without hardware Greg will not allow the code to be
> > added. And Krzysztof has suggested ODROID-U3 for this purpose.
> 
> Right, I suggested Odroid-U3 (with Mali 400 and Exynos4412) because the
> board works quite well with mainline. Most of stuff is upstreamed.
> However I am using Tizen TV profile (public) on it with 4.0 kernel (not
> entirely public).
> 
> There are a lot of more devices with Mali 400 or newer so the question
> would be rather - which board would work the best (with less problems)
> on mainline.
> 
> Anyway good luck :)

Given that DRM drivers can't be merged to mainline without an open-source 
userspace we're stuck until ARM decides to play fair (unlikely) or the Lima 
driver project rises back from the deaths.

-- 
Regards,

Laurent Pinchart