[PATCH 1/2] drm/amdgpu: skip hdp invalidation for HDP 4.4.2

[Alex Deucher]

From: Le Ma <le.ma at amd.com>

No mmHDP_READ_CACHE_INVALIDATE register on HDP 4.4.2.

Signed-off-by: Le Ma <le.ma at amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c b/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c
index adf89680f53e..ee09cf1b8e4f 100644
--- a/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c
@@ -49,7 +49,8 @@ static void hdp_v4_0_flush_hdp(struct amdgpu_device *adev,
 static void hdp_v4_0_invalidate_hdp(struct amdgpu_device *adev,
 				    struct amdgpu_ring *ring)
 {
-	if (adev->ip_versions[HDP_HWIP][0] == IP_VERSION(4, 4, 0))
+	if (adev->ip_versions[HDP_HWIP][0] == IP_VERSION(4, 4, 0) ||
+	    adev->ip_versions[HDP_HWIP][0] == IP_VERSION(4, 4, 2))
 		return;
 
 	if (!ring || !ring->funcs->emit_wreg)
-- 
2.39.2