drm/rockchip: vop2: Fix the mixer alpha setup for layer 0

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[ Upstream commit 6b4dfdcde3 ]

The alpha setup should start from the second layer, the current calculation
starts incorrectly from the first layer, a negative offset will be obtained
in the following formula:

offset = (mixer_id + zpos - 1) * 0x10

Fixes: 604be85547 ("drm/rockchip: Add VOP2 driver")
Tested-by: Derek Foreman <derek.foreman@collabora.com>
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20241209122943.2781431-7-andyshrk@163.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Andy Yan 2024-12-09 20:29:16 +08:00 • committed by Greg Kroah-Hartman

parent 869e43d21e

commit dc03fc5779

1 changed files with 6 additions and 0 deletions

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drivers/gpu/drm/rockchip/rockchip_drm_vop2.c

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