Daniel Vetter 855d30b402 drm: Only update final vblank count when precise ts is available ...

Drivers without a hardware vblank counter simply can't account for the
vblanks that happened while the vblank interrupt was off. To check
this grab a vblank timestamp and if the result is dubious follow the
normal save-and-disable logic.

Drivers should prevent this by setting vblank_disable_allowed = false,
but since running vblank interrupts constantly is not good for power
consumption most drivers lie. Testing for precise vblank timestamps is
the next best thing we can check for.

Suggested-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

2014-09-11 13:32:05 +02:00

..

drm

drm: Only update final vblank count when precise ts is available

2014-09-11 13:32:05 +02:00

host1x

gpu: host1x: Rename internal functions for clarity

2014-06-05 23:10:30 +02:00

ipu-v3

Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

2014-06-12 11:32:30 -07:00

vga

vgaarb: We can own non-decoded resources

2014-07-08 11:15:09 +10:00

Makefile

gpu: ipu-v3: Move i.MX IPUv3 core driver out of staging

2014-06-04 11:06:52 +02:00