Hi On Sun, Sep 8, 2013 at 1:33 PM, Tom Gundersen <teg@xxxxxxx> wrote: > Hi David, > > On Wed, Sep 4, 2013 at 7:34 PM, David Herrmann <dh.herrmann@xxxxxxxxx> wrote: >> Hi >> >> On Sun, Sep 1, 2013 at 3:36 PM, David Herrmann <dh.herrmann@xxxxxxxxx> wrote: >>> Hi >>> >>> With the upcoming 3.12 merge-window, I thought people might find themselves with >>> nothing to do, so here's a new SimpleDRM series. Comments welcome! >>> >>> This depends on the tip/x86/fb series in the x86-tip tree: >>> http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/log/?h=x86/fb >>> Which, as far as I understood, will be pushed into 3.12 by the x86 people. >> >> FYI, this is now merged in Linus' tree. See: >> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=228abe73ad67665d71eacd6a8a347dd76b0115ae >> >> So hopefully we can get SimpleDRM ready for 3.13. > > Now that simplefb works for me, I finally got around to testing this. > Just a couple of comments: > > * I guess you need to add the modalias "platform:simple-framebuffer" > in addition to the "of:..." one to get module auto loading working. Yes, sounds good. > * the driver currently doesn't work with your IORESOURCE_BUSY fix to > sysfb (as might be expected(?)): > simple-framebuffer simple-framebuffer.0: cannot reserve VMEM > simple-framebuffer: probe of simple-framebuffer.0 failed with error -5 Yes, if the simple-framebuffer region is already marked BUSY, simpleDRM must not (and doesn't have to) call __request_region() (or request_mem_region()). I have to remove that call if the BUSY fix gets applied. > * except for that, fbcon on top of the fbdev fallback support works > fine for me. I didn't yet try the drm driver itself, what clients (if > any) are supposed to work with this, kmscon, weston? Obviously, simpledrm doesn't support double-buffering, page-flipping or other advanced techniques. So I currently doubt you can use any real application on it as they all at least require 2 buffers. I haven't decided whether to emulate these in the kernel driver or to rely on user-space to deal with this reduced driver. It's quite likely I will go with both. That means, a compatibility option that makes simpledrm emulate any required techniques (multiple FBs, page-flipping) but also user-space patches to maybe some day be able to disable the kernel emulation. Thanks a lot for testing all this. I will try to get the fixes into rc2. The speed-improvements might have to wait for 3.13, though. Cheers David _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
