On 17/04/13 19:11, the mail apparently from Jon Medhurst (Tixy) included:
On Wed, 2013-04-17 at 16:28 +0530, Tushar Behera wrote:
On 04/16/2013 09:46 AM, Andy Green wrote:
On 16/04/13 10:08, the mail apparently from Selina Kuo included:
Hi, John,
Your assumption is right. The ump code is part of the out-of-tree mali
driver.
- Selina Kuo, one of Andy's colleagues ^^
As Selina says it's a code drop we got via Fujitsu from ARM for the OOT
Mali driver.
However that code is all GPL2, as it should be.
I think any of the options are good,
- make our own repo and keep it in sync with llct
- privately encourage ARM to keep it in sync with Linus' HEAD, publicly
- upstream it so it's always in sync
This obviously helps of all LT who want to / can harmonize their tree on
llct basis.
Tushar, do you have any opinion?
It would always help to have the Mali driver synced with latest upstream
and getting merged into 'llct'. The LT's who need to use this driver can
have their modifications (if any) on top of it.
Each LT will have to make sure that their changes are suitably guarded
with #ifdefs to avoid stepping on each other's toes. But then that isn't
going to work with a multi-platform kernel. So the changes are going to
need to be made run-time configurable based on device-tree or something.
Speaking of device-tree, do the Mali drivers have device-tree support?
Nope... this will be a basis that other branches patch on top of if they
want to modify.
If it does happen that xyz-LT had special sauce, they'll have a branch
like xyz-mali-t6xx-tracking which is mali-t6xx-tracking with their
patches on top, and they'll follow by rebase.
Having been there before and survived 2,500 patch loads on top of a
rebase tree, trust me this one is trivial to deal with.
Obviously it is nicer if eventually the changes for supporting different
IP revisions cleanly, and any member special sauces (if any) are merged
in one tree. But it is not necessary and everyone is ahead just by
having a basis tree for the OOT module that actually builds againt llct,
as Tushar noted.
-Andy
--
Andy Green | Fujitsu Landing Team Leader
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