Freescale Linux BSP review
arnd at arndb.de
Mon Dec 13 07:18:04 PST 2010
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.
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.
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