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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-03-03 21:12:04 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-03-21 17:55:39 +0200 |
| commit | 6c69d0bb9f15cdbc8fd6134e2c66438b69bb9581 (patch) | |
| tree | a93ec4a3ae13921f50220b6b4d26ac6d0c9a73e9 /drivers/gpu/drm/i915/display/intel_bw.c | |
| parent | 7243867c6f9617c451c763a7751fa743c3f04f4a (diff) | |
| download | linux-6c69d0bb9f15cdbc8fd6134e2c66438b69bb9581.tar.gz linux-6c69d0bb9f15cdbc8fd6134e2c66438b69bb9581.tar.bz2 linux-6c69d0bb9f15cdbc8fd6134e2c66438b69bb9581.zip | |
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: 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>
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_bw.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_bw.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c index e991949c6e5d..8155f2309f80 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.c +++ b/drivers/gpu/drm/i915/display/intel_bw.c @@ -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); |