drm/msm/mdp4: request vblank during modeset

Browse source

This avoids a problem seen with weston (for example) where the display
gets stuck in "black screen" if starting weston first thing after boot.
Possibly mdp5 needs something similar.  The downstream android fbdev
driver always requests DMA_E (or DMA_P) when display is active, rather
than only enabling it on-demand as the drm driver does, which I believe
has the same end result.

Signed-off-by: Rob Clark <robdclark@gmail.com>

...

This commit is contained in:

Rob Clark 2014-08-04 10:44:53 -04:00

parent 6814dbf941

commit 119ecb7fd3

1 changed files with 2 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c

View file