From: Nicholas Kazlauskas nicholas.kazlauskas@amd.com
[ Upstream commit 7316c4ad299663a16ca9ce13e5e817b4ca760809 ]
[Why] For commits with allow_modeset=false and CRTC degamma changes the planes aren't reset. This results in incorrect rendering.
[How] Reset the planes when color management has changed on the CRTC. Technically this will include regamma changes as well, but it doesn't really after legacy userspace since those commit with allow_modeset=true.
Signed-off-by: Nicholas Kazlauskas nicholas.kazlauskas@amd.com Reviewed-by: Harry Wentland Harry.Wentland@amd.com Acked-by: Leo Li sunpeng.li@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 31530bfd002a..0e482349a5cb 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6331,6 +6331,10 @@ static bool should_reset_plane(struct drm_atomic_state *state, if (!new_crtc_state) return true;
+ /* CRTC Degamma changes currently require us to recreate planes. */ + if (new_crtc_state->color_mgmt_changed) + return true; + if (drm_atomic_crtc_needs_modeset(new_crtc_state)) return true;