Commit 6c69d0bb authored by Ville Syrjälä's avatar Ville Syrjälä

drm/i915: Round up when calculating display bandwidth requirements

We should round up when doing bandwidth calculations to make sure
our estimates don't fall short of the actual number.
Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220303191207.27931-7-ville.syrjala@linux.intel.comReviewed-by: default avatarStanislav Lisovskiy <stanislav.lisovskiy@intel.com>
parent 7243867c
...@@ -638,7 +638,7 @@ static unsigned int intel_bw_data_rate(struct drm_i915_private *dev_priv, ...@@ -638,7 +638,7 @@ static unsigned int intel_bw_data_rate(struct drm_i915_private *dev_priv,
data_rate += bw_state->data_rate[pipe]; data_rate += bw_state->data_rate[pipe];
if (DISPLAY_VER(dev_priv) >= 13 && intel_vtd_active(dev_priv)) 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; return data_rate;
} }
...@@ -763,7 +763,7 @@ int intel_bw_calc_min_cdclk(struct intel_atomic_state *state) ...@@ -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) { if (new_bw_state->min_cdclk != old_bw_state->min_cdclk) {
int ret = intel_atomic_lock_global_state(&new_bw_state->base); int ret = intel_atomic_lock_global_state(&new_bw_state->base);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment