drm/imx: ipuv3-plane: Fix overlay plane width
authorPhilipp Zabel <p.zabel@pengutronix.de>
Tue, 8 Nov 2022 14:14:20 +0000 (15:14 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 12 Jan 2023 10:59:15 +0000 (11:59 +0100)
commita23e8376e613cf17bfbd4c799bae38951995c922
tree586fa1901d0db1eeb6dc2e40ea842a03666afceb
parenta8f7fd322f566a9f2f05bc138c4dfc2ae1fe5e74
drm/imx: ipuv3-plane: Fix overlay plane width

[ Upstream commit 92d43bd3bc9728c1fb114d7011d46f5ea9489e28 ]

ipu_src_rect_width() was introduced to support odd screen resolutions
such as 1366x768 by internally rounding up primary plane width to a
multiple of 8 and compensating with reduced horizontal blanking.
This also caused overlay plane width to be rounded up, which was not
intended. Fix overlay plane width by limiting the rounding up to the
primary plane.

drm_rect_width(&new_state->src) >> 16 is the same value as
drm_rect_width(dst) because there is no plane scaling support.

Fixes: 94dfec48fca7 ("drm/imx: Add 8 pixel alignment fix")
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Link: https://lore.kernel.org/r/20221108141420.176696-1-p.zabel@pengutronix.de
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20221108141420.176696-1-p.zabel@pengutronix.de
Tested-by: Ian Ray <ian.ray@ge.com>
(cherry picked from commit 4333472f8d7befe62359fecb1083cd57a6e07bfc)
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/gpu/drm/imx/ipuv3-plane.c