If VT-d is active, the memory bandwidth usage of the display is 5%
higher. Take this into account when determining whether we can support
a display configuration.
Bspec: 64631
Cc: Matt Atwood <matthew.s.atw...@intel.com>
Signed-off-by: Matt Roper <matthew.d.ro...@intel.com>
---
drivers/gpu/drm/i915/display/intel_bw.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_bw.c
b/drivers/gpu/drm/i915/display/intel_bw.c
index 20dbc3759d27..23cf9bf31e41 100644
--- a/drivers/gpu/drm/i915/display/intel_bw.c
+++ b/drivers/gpu/drm/i915/display/intel_bw.c
@@ -344,6 +344,9 @@ static unsigned int intel_bw_data_rate(struct
drm_i915_private *dev_priv,
for_each_pipe(dev_priv, pipe)
data_rate += bw_state->data_rate[pipe];
+ if (DISPLAY_VER(dev_priv) >= 13 && intel_vtd_active())
+ data_rate = data_rate * 105 / 100;
+
return data_rate;
}
--
2.25.4
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