From: Tianci Yin <[email protected]>

[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 <[email protected]>
Cc: Alex Deucher <[email protected]>
Cc: [email protected]
Reviewed-by: Aurabindo Pillai <[email protected]>
Acked-by: Alex Hung <[email protected]>
Signed-off-by: Tianci Yin <[email protected]>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

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 adbeb2c897b5..8ebdbfbbb691 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -9585,14 +9585,14 @@ static bool should_reset_plane(struct drm_atomic_state 
*state,
        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. */
-- 
2.42.0

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