[PATCH] drm/amd/display: Enable fast plane updates on DCN3.2 and above when state->allow_modeset = true

[Tianci Yin]

From: tiancyin <tianci.yin at amd.com>

[why]
When cursor moves across screen boarder, lag cursor observed,
since subvp settings need to sync up with vblank, that cause
cursor updates being delayed.

[how]
Enable fast plane updates on DCN3.2 to fix it.

Signed-off-by: tiancyin <tianci.yin at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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 c21726bdbca2..25a0bd314fe5 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -9879,6 +9879,7 @@ 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;
 
 	/*
@@ -9886,7 +9887,7 @@ static bool should_reset_plane(struct drm_atomic_state *state,
 	 * enough to determine when we need to reset all the planes on
 	 * the stream.
 	 */
-	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. */
-- 
2.34.1