[Intel-gfx] [PATCH 1/2] drm/i915: use power well count instead of reading hw state when checking status

This saves many ms per call on my BYT by eliminating Punit communication from the hw readout paths. Signed-off-by: Jesse Barnes --- drivers/gpu/drm/i915/intel_pm.c | 8 +++- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/i

Re: [Intel-gfx] [PATCH 1/2] drm/i915: use power well count instead of reading hw state when checking status

On Wed, 2014-05-28 at 09:50 -0700, Jesse Barnes wrote: > This saves many ms per call on my BYT by eliminating Punit communication > from the hw readout paths. > > Signed-off-by: Jesse Barnes > --- > drivers/gpu/drm/i915/intel_pm.c | 8 +++- > 1 file changed, 3 insertions(+), 5 deletions(-) >

Re: [Intel-gfx] [PATCH 1/2] drm/i915: use power well count instead of reading hw state when checking status

On Wed, 28 May 2014 21:09:27 +0300 Imre Deak wrote: > On Wed, 2014-05-28 at 09:50 -0700, Jesse Barnes wrote: > > This saves many ms per call on my BYT by eliminating Punit communication > > from the hw readout paths. > > > > Signed-off-by: Jesse Barnes > > --- > > drivers/gpu/drm/i915/intel_pm