On Wed, 2022-05-25 at 18:45 +0200, Thomas Zimmermann wrote:
> I don't mind adding DRM support for BootX displays, but getting the
> necessary test HW with a suitable Linux seems to be laborious. Would
> a G4 Powerbook work?
Probably not unfortunately... it's going to be tricky. I might sitll
On Wed, 2022-05-25 at 18:45 +0200, Thomas Zimmermann wrote:
>
> > The palette handling is useful when using a real Open Firmware
> > implementation which tends to boot in 8-bit mode, so without palette
> > things will look ... bad.
> >
> > It's not necessary when using 16/32 bpp framebuffers
Hi
Am 21.05.22 um 04:49 schrieb Benjamin Herrenschmidt:
On Thu, 2022-05-19 at 09:27 +0200, Thomas Zimmermann wrote:
to build without PCI to see what happens.
If you bring any of the "heuristic" and palette support code in, you
need PCI. I don't see any reason to take it out.
Those old
On Sun, 2022-05-22 at 21:35 +0200, Thomas Zimmermann wrote:
> > Interesting. Did you find some formats that were not supported ?
>
> We still don't support XRGB1555. If the native buffer uses this format,
> we'd have no conversion helper. In this case, we rely on userspace/fbcon
> to use the
Hi Javier
Am 20.05.22 um 08:19 schrieb Javier Martinez Canillas:
Hello Thomas,
On 5/18/22 20:30, Thomas Zimmermann wrote:
+config DRM_OFDRM
+ tristate "Open Firmware display driver"
+ depends on DRM && MMU && PPC
Shouldn't depend on OF? I mean, is a DRM driver for Open
On Thu, 2022-05-19 at 09:27 +0200, Thomas Zimmermann wrote:
> to build without PCI to see what happens.
If you bring any of the "heuristic" and palette support code in, you
need PCI. I don't see any reason to take it out.
> Those old Macs use BootX, right? BootX is not supported ATM, as I don't
On Thu, 2022-05-19 at 09:11 +0200, Geert Uytterhoeven wrote:
> Hi Michal,
>
>
>
> On Wed, May 18, 2022 at 8:54 PM Michal Suchánek
> wrote:
>
> > On Wed, May 18, 2022 at 08:30:06PM +0200, Thomas Zimmermann wrote:
> > > --- a/drivers/gpu/drm/tiny/Kconfig
> > > +++ b/drivers/gpu/drm/tiny/Kconfig
Hello Thomas,
On 5/18/22 20:30, Thomas Zimmermann wrote:
>
> +config DRM_OFDRM
> + tristate "Open Firmware display driver"
> + depends on DRM && MMU && PPC
Shouldn't depend on OF? I mean, is a DRM driver for Open Firmware after all :)
I know that the old drivers/video/fbdev/offb.c
Hi
Am 18.05.22 um 23:11 schrieb Mark Cave-Ayland:
On 18/05/2022 19:30, Thomas Zimmermann wrote:
Open Firmware provides basic display output via the 'display' node.
DT platform code already provides a device that represents the node's
framebuffer. Add a DRM driver for the device. The display
On 18/05/2022 19:30, Thomas Zimmermann wrote:
Open Firmware provides basic display output via the 'display' node.
DT platform code already provides a device that represents the node's
framebuffer. Add a DRM driver for the device. The display mode and
color format is pre-initialized by the
Hi
Am 19.05.22 um 09:11 schrieb Geert Uytterhoeven:
Hi Michal,
On Wed, May 18, 2022 at 8:54 PM Michal Suchánek wrote:
On Wed, May 18, 2022 at 08:30:06PM +0200, Thomas Zimmermann wrote:
--- a/drivers/gpu/drm/tiny/Kconfig
+++ b/drivers/gpu/drm/tiny/Kconfig
@@ -51,6 +51,18 @@ config
Hi Michal,
On Wed, May 18, 2022 at 8:54 PM Michal Suchánek wrote:
> On Wed, May 18, 2022 at 08:30:06PM +0200, Thomas Zimmermann wrote:
> > --- a/drivers/gpu/drm/tiny/Kconfig
> > +++ b/drivers/gpu/drm/tiny/Kconfig
> > @@ -51,6 +51,18 @@ config DRM_GM12U320
> >This is a KMS driver for
On Wed, May 18, 2022 at 10:11:03PM +0100, Mark Cave-Ayland wrote:
> On 18/05/2022 19:30, Thomas Zimmermann wrote:
>
> > Open Firmware provides basic display output via the 'display' node.
> > DT platform code already provides a device that represents the node's
> > framebuffer. Add a DRM driver
Hello,
On Wed, May 18, 2022 at 08:30:06PM +0200, Thomas Zimmermann wrote:
> Open Firmware provides basic display output via the 'display' node.
> DT platform code already provides a device that represents the node's
> framebuffer. Add a DRM driver for the device. The display mode and
> color
Open Firmware provides basic display output via the 'display' node.
DT platform code already provides a device that represents the node's
framebuffer. Add a DRM driver for the device. The display mode and
color format is pre-initialized by the system's firmware. Runtime
modesetting via DRM is not
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