The RC6 residency time unit is 1.33us on SKL according to the
specification, so update the calculation accordingly.
Cc: Imre Deak <imre.deak@xxxxxxxxx>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_sysfs.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index c6188dd..9aa49a9 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -58,7 +58,8 @@ static u32 calc_residency(struct drm_device *dev,
} else if (IS_BROXTON(dev)) {
units = 1;
div = 1200; /* 833.33ns */
- }
+ } else if (IS_SKYLAKE(dev))
+ units = 133ULL;
raw_time = I915_READ(reg) * units;
ret = DIV_ROUND_UP_ULL(raw_time, div);
--
1.9.1
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