[Openpvrsgx-devgroup] Intel Poulsbo

[Jeffrey Mckenzie]

> See here for the pci id table used by the gma500 driver for autodetection:
> https://github.com/torvalds/linux/blob/v5.6/drivers/gpu/drm/gma500/psb_drv.c#L40-L99

I see.

> I've had work done already to add page_flip support to the gma500
> driver for psb and cdv variants in the mainline kernel so that this
> hardware can be used with a wayland based graphics stack for an
> embedded cdv/gma3650 platform I'm supporting, psb/gma500 was
> also supported at the same time.

Awesome!

> While my use case luckily doesn't
> have a hard requirement on acceleration it would be handy to have
> so I'd be willing to support any project working on a fully open source
> accelerated driver as I have a very large amount of these boards I
> will need to support indefinitely on a mainline kernel. From my
> understanding the accelerated drivers Intel released for older kernels
> do not support 64 bit however so using those would not be feasible
> as I use a 64 bit mainline kernel. The changes to support wayland
> were only recently added in the mainline kernel 5.6 release.

I would also support this, but I think that's simply too much work and
I'm definitely not skilled enough for this. I've read this blog from
libv and I'm not really optimistic about it, to be honest:
https://libv.livejournal.com/26972.html

It seems that this project is about shaping the out-of-tree kernel
drivers and use it with the existing userspace blobs, which would be
good enough for me. I would like to have working 3D on an otherwise
more modern software stack. This seems to be a successful way of
achieving it, considering what the Maemo Leste people have done for
the Motorola Droid 4.

But I'm clueless about the differences between the kernel modules. If
we would use the proprietary userspace blobs for 3D OpenGL
acceleration, which driver should be used? The GMA500 is already
mainlined, but support seems to be limited to kernel modesetting, 2D
acceleration and thanks to you also supports page_flip. The other
works for OMAP with the blobs, but would it make sense to use it on
x86, considering it does not make any use of DTs?

@Nikolaus: what kind of file is the firmware? Have you searched
through the EMGD-Community/intel-binaries-linux repository before for
the firmware file of the SGX535?