[PATCH 3/3] drm/radeon/kms: implement timestamp userspace query

[Michel Dänzer]

On Don, 2012-08-09 at 10:57 -0400, Jerome Glisse wrote: 
> On Thu, Aug 9, 2012 at 10:34 AM, Marek Olšák <maraeo at gmail.com> wrote:
> >
> > diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
> > index 637280f..be0e320 100644
> > --- a/drivers/gpu/drm/radeon/r600.c
> > +++ b/drivers/gpu/drm/radeon/r600.c
> > @@ -3789,3 +3789,15 @@ static void r600_pcie_gen2_enable(struct radeon_device *rdev)
> >                 WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
> >         }
> >  }
> > +
> > +uint64_t r600_get_gpu_clock(struct radeon_device *rdev)
> > +{
> > +       uint64_t clock;
> > +
> > +       mutex_lock(&rdev->gpu_clock_mutex);
> > +       WREG32(RLC_CAPTURE_GPU_CLOCK_COUNT, 1);
> > +       clock = (uint64_t)RREG32(RLC_GPU_CLOCK_COUNT_LSB) |
> > +               ((uint64_t)RREG32(RLC_GPU_CLOCK_COUNT_MSB) << 32);
> 
> I keep forgeting about c type rules but i think you want 32ULL

Not sure why that would be needed (or why you'd want it if it's not :).


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer