drm/i915: Fix plane relative_data_rate calculation

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We are currently computing the relative data rates as
src_size * scale_factor where scale_factor is src_size / dst_size.
Thus relative data rate is src_size * src_size / dst_size,
which is just utter nonsense. What we really seem to want is
just a reasonable estimate on how much data will be fetched
which is just src_size. So let's do that instead.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220118092354.11631-4-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>

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Ville Syrjälä 2022-01-18 11:23:42 +02:00

parent 8a84e7a176

commit 759d4fff3d

1 changed files with 2 additions and 61 deletions

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drivers/gpu/drm/i915/intel_pm.c

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