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drm/i915: Round up when calculating display bandwidth requirements

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We should round up when doing bandwidth calculations to make sure
our estimates don't fall short of the actual number.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220303191207.27931-7-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
This commit is contained in:
Ville Syrjälä
2022-03-03 21:12:04 +02:00
parent 7243867c6f
commit 6c69d0bb9f
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/display/intel_bw.c
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@@ -638,7 +638,7 @@ static unsigned int intel_bw_data_rate(struct drm_i915_private *dev_priv,
data_rate += bw_state->data_rate[pipe];
if (DISPLAY_VER(dev_priv) >= 13 && intel_vtd_active(dev_priv))
data_rate = data_rate * 105 / 100;
data_rate = DIV_ROUND_UP(data_rate * 105, 100);
return data_rate;
}
@@ -763,7 +763,7 @@ int intel_bw_calc_min_cdclk(struct intel_atomic_state *state)
}
}
new_bw_state->min_cdclk = max_bw / 64;
new_bw_state->min_cdclk = DIV_ROUND_UP(max_bw, 64);
if (new_bw_state->min_cdclk != old_bw_state->min_cdclk) {
int ret = intel_atomic_lock_global_state(&new_bw_state->base);