drm/vc4: Prefer PPF over TPZ when dst >= 2/3 src

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The HVS spec recommends using PPF when the downscaling ratio is
between 2/3 and 1. Let's modify vc4_get_scaling_mode() to follow this
recommendation.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20181109102633.32603-2-boris.brezillon@bootlin.com

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Boris Brezillon 2018-11-09 11:26:33 +01:00

parent 0560054da5

commit eb8dd3abeb

1 changed files with 4 additions and 4 deletions

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drivers/gpu/drm/vc4/vc4_plane.c

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