Re: [PATCH v5 0/7] drm: add simpledrm driver

[nerdopolis <bluescreen_avenger@verizon.net>]

On Wednesday, March 10, 2021 4:10:35 AM EST Thomas Zimmermann wrote:
> Hi
> 
> Am 10.03.21 um 03:50 schrieb nerdopolis:
> > On Friday, September 2, 2016 4:22:38 AM EST David Herrmann wrote:
> >> Hey
> >>
> >> On request of Noralf, I picked up the patches and prepared v5. Works fine with
> >> Xorg, if configured according to:
> >>      https://lists.freedesktop.org/archives/dri-devel/2014-January/052777.html
> >> If anyone knows how to make Xorg pick it up dynamically without such a static
> >> configuration, please let me know.
> >>
> >>
> >>
> > Hi
> > 
> > I am kind of curious as I do have interest in seeing this merged as well.
> 
> Please take a look at [1]. It's not the same driver, but something to 
> the same effect. I know it's been almost a year, but I do work on this 
> and intend to come back with a new version during 2021.
> 
> I currently work on fastboot support for the new driver. But it's a 
> complicated matter and takes time. If there's interest, we could talk 
> about merging what's already there.
> 
> Best regards
> Thomas
> 
> [1] 
> https://lore.kernel.org/dri-devel/20200625120011.16168-1-tzimmermann@suse.de/
> 
> > 
> > There is an email in this thread from 2018, but when I tried to import an mbox
> > file from the whole month for August 2018, for some reason, kmail doesn't see
> > the sender and mailing list recipient in that one, so I will reply to this one,
> > because I was able to import this into my mail client.
> > https://www.spinics.net/lists/dri-devel/msg185519.html
> > 
> > I was able to get this to build against Linux 4.8, but not against a newer
> > version, some headers seem to have been split, and some things are off by 8
> > and other things. I could NOT find a git repo, but I was able to find the
> > newest patches I could find, and import those with git am against 4.8 with
> > some tweaks. If that is needed, I can link it, but only if you want.
> > 
> > However in QEMU I wasn't able to figure out how to make it create a
> > /dev/dri/card0 device, even after blacklisting the other modules for qxl,
> > cirrus, etc, and then modprobe-ing simpledrm
> > 
> > In my view something like this is would be useful. There still could be
> > hardware devices that don't have modesetting support (like vmvga in
> > qemu/virt-manager as an example). And most wayland servers need a
> > /dev/dri/card0 device as well as a potential user-mode TTY replacement would
> > also need /dev/dri/card0
> > 
> > I will admit I unfortunately failed to get it to build against master. I
> > couldn't figure out some of the changes, where some new structs were off by
> > a factor of 8.
> > 
> > 
> > Thanks
> > 
> > 
> > 
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> > 
> 
> 
Hi

I tried simplekms against v5.9, and it built, and it runs, and is pretty neat.

I tried using the qxl, cirrus, and vmware card in QEMU. Weston starts on all
of them. And I did ensure that the simplekms driver was being used

That is, it works after adding GRUB_GFXPAYLOAD_LINUX=keep , to avoid having to
set a VGA option. (although not sure the equivalent in syslinux yet)
 

Thanks.


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