6.5-stable review patch. If anyone has any objections, please let me know.
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From: Tianci Yin tianci.yin@amd.com
commit 435f5b369657cffee4b04db1f5805b48599f4dbe upstream.
[WHY] When cursor moves across screen boarder, lag cursor observed, since subvp settings need to sync up with vblank that causes cursor updates being delayed.
[HOW] Enable fast plane updates on DCN3.2 to fix it.
Cc: Mario Limonciello mario.limonciello@amd.com Cc: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Reviewed-by: Aurabindo Pillai aurabindo.pillai@amd.com Acked-by: Alex Hung alex.hung@amd.com Signed-off-by: Tianci Yin tianci.yin@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -9507,14 +9507,14 @@ static bool should_reset_plane(struct dr struct drm_plane *other; struct drm_plane_state *old_other_state, *new_other_state; struct drm_crtc_state *new_crtc_state; + struct amdgpu_device *adev = drm_to_adev(plane->dev); int i;
/* - * TODO: Remove this hack once the checks below are sufficient - * enough to determine when we need to reset all the planes on - * the stream. + * TODO: Remove this hack for all asics once it proves that the + * fast updates works fine on DCN3.2+. */ - if (state->allow_modeset) + if (adev->ip_versions[DCE_HWIP][0] < IP_VERSION(3, 2, 0) && state->allow_modeset) return true;
/* Exit early if we know that we're adding or removing the plane. */