drm/vc4: Set premultiplied for alpha formats

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Alpha formats in DRM are assumed to be premultiplied, so we should be
setting the PREMULT bit in the plane configuration for HVS.

Changes from v1:
 - Use correct has_alpha

Signed-off-by: Stefan Schake <stschake@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/1520556817-97297-2-git-send-email-stschake@gmail.com

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Stefan Schake 2018-03-09 01:53:34 +01:00 • committed by Eric Anholt

parent 60beeccc72

commit 05202c241f

2 changed files with 3 additions and 1 deletions

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3

drivers/gpu/drm/vc4/vc4_plane.c

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1

drivers/gpu/drm/vc4/vc4_regs.h

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