linux/drivers/gpu
Rob Clark 2a2b8fa628 drm/msm/mdp4: page_flip cleanups/fixes
There were a few potential problems with the original page_flip/vblank
code in mdp4_crtc.

1) We need vblank irq for a couple things, both completing flips and
   updating cursor.  We need to keep track of what work is pending so
   that (for example) a cursor update while we are still waiting for
   pageflip_cb (ie. pageflip requested from userspace, but still
   waiting for rendering to complete) would not prematurely trigger
   event to userspace.

2) A preclose -> pageflip-cancel should not cancel a pageflip that
   was requested on a different file (ie. non-master closing should
   not cancel a pending pageflip).

With these fixes, we no longer have problems w/ cursor not updating and
with occasional hangs with userspace waiting for a pageflip that had
been cancelled (launching XBMC from gnome-shell overview mode was a good
way to trigger this, but now works reliably).

Signed-off-by: Rob Clark <robdclark@gmail.com>
2013-11-01 12:39:45 -04:00
..
drm drm/msm/mdp4: page_flip cleanups/fixes 2013-11-01 12:39:45 -04:00
host1x Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2013-09-05 10:17:26 -07:00
vga vgaarb: Fix VGA decodes changes 2013-09-03 19:17:59 +02:00
Makefile gpu: host1x: Add host1x driver 2013-04-22 12:32:40 +02:00