On Tue, Sep 29, 2015 at 04:28:46PM +0300, Imre Deak wrote: > The RC6 residency time unit is 833.33ns on BXT according to the > specification, so update the calculation accordingly. Use the same way > as CHV/VLV to divide by the corresponding frequency, as I think this is > the more natural unit for what the HW does internally. > > v2: > - add missing IS_BROXTON check (Ville) > > Testcase: igt/pm_rc6_residency > Signed-off-by: Imre Deak <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]> > --- > drivers/gpu/drm/i915/i915_sysfs.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/i915/i915_sysfs.c > b/drivers/gpu/drm/i915/i915_sysfs.c > index 74086eb..50ce9ce 100644 > --- a/drivers/gpu/drm/i915/i915_sysfs.c > +++ b/drivers/gpu/drm/i915/i915_sysfs.c > @@ -54,6 +54,9 @@ static u32 calc_residency(struct drm_device *dev, const u32 > reg) > > if (I915_READ(VLV_COUNTER_CONTROL) & VLV_COUNT_RANGE_HIGH) > units <<= 8; > + } else if (IS_BROXTON(dev)) { > + units = 1; > + div = 1200; /* 833.33ns */ > } > > raw_time = I915_READ(reg) * units; > -- > 2.1.4 -- Ville Syrjälä Intel OTC _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
