Freescale Linux BSP review
eric.miao at canonical.com
Mon Dec 13 18:35:20 PST 2010
On Tue, Dec 14, 2010 at 9:59 AM, Jammy Zhou <jammy.zhou at linaro.org> wrote:
> On Mon, Dec 13, 2010 at 11:18 PM, Arnd Bergmann <arnd at arndb.de> wrote:
>> On Monday 13 December 2010, Jammy Zhou wrote:
>> > On Mon, Dec 13, 2010 at 4:45 AM, Linus Walleij
>> > <linus.walleij at linaro.org>wrote:
>> > > On 11 December 2010 22:41, Arnd Bergmann <arnd at arndb.de> wrote:
>> > >
>> > > * amd-gpu -- a single but huge driver for the GPU. As is normally the
>> > >> case with GPU drivers, we can expect long discussions
>> > >> before it will get considered for mainline
>> > >> 4 patches
>> > >> 98 files changed, 278321 insertions(+), 0 deletions(-)
>> > >>
>> > >
>> > > Just out of curiosity, following the discussion between Dave Airlie
>> > > and Codeaurora this summer re GPU driver shims.
>> > >
>> > > Is the AMD GPU exposing all functionality in its kernel driver or
>> > > is there some userspace blob somewhere with lots of e.g. GL
>> > > goodies?
>> > >
>> > All the functionality for the kernel driver of AMD GPU Z430/Z160 (now
>> > belongs to Qualcom) is exposed. But we need accompanied userspace
>> > library to
>> > call these functionality (buffer management, command submission, ...).
>> Who owns these components? If it's closed source, the only options we
>> have are lobbying for complete release of the specs for a reimplementation
>> or reverse-engineering the drivers, which may at least get easier with
>> a user space driver than it would be with a kernel driver.
> The user space library is closed source, and it is owned by Qualcomm.
>> Until there is a solution with an open source user space part, I would
>> suggest that the driver better be dropped from the Freescale BSP and
>> we should at least not waste time reviewing it.
> I think it is beneficial for us to integrate the kernel part into our Linaro
> tree, so that we can build/use it together with the kernel image. As for the
> user space libraries, how about adding them into the hwpack? (Is there any
> legal issue for this?)
I think so, there's normally a rule if free redistribution is allowed
or not, even
it's closed source.
> linaro-dev mailing list
> linaro-dev at lists.linaro.org
More information about the dri-devel