drm/amdgpu: get VCN harvest information from IP discovery table

Use the table rather than asic specific harvest registers.

v2: remove harvesting register checking
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c

@@ -470,6 +470,10 @@ void amdgpu_discovery_harvest_ip(struct amdgpu_device *adev)
 		switch (le32_to_cpu(harvest_info->list[i].hw_id)) {
 		case VCN_HWID:
 			vcn_harvest_count++;
+			if (harvest_info->list[i].number_instance == 0)
+				adev->vcn.harvest_config |= AMDGPU_VCN_HARVEST_VCN0;
+			else
+				adev->vcn.harvest_config |= AMDGPU_VCN_HARVEST_VCN1;
 			break;
 		case DMU_HWID:
 			adev->harvest_ip_mask |= AMD_HARVEST_IP_DMU_MASK;

drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c

@@ -87,7 +87,6 @@ static void vcn_v3_0_enc_ring_set_wptr(struct amdgpu_ring *ring);
 static int vcn_v3_0_early_init(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
-	int i;
 
 	if (amdgpu_sriov_vf(adev)) {
 		adev->vcn.num_vcn_inst = VCN_INSTANCES_SIENNA_CICHLID;
@@ -95,20 +94,10 @@ static int vcn_v3_0_early_init(void *handle)
 		adev->vcn.num_enc_rings = 1;
 
 	} else {
-		if (adev->ip_versions[UVD_HWIP] == IP_VERSION(3, 0, 0)) {
-			u32 harvest;
-
-			for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
-				harvest = RREG32_SOC15(VCN, i, mmCC_UVD_HARVESTING);
-				if (harvest & CC_UVD_HARVESTING__UVD_DISABLE_MASK)
-					adev->vcn.harvest_config |= 1 << i;
-			}
-
 		if (adev->vcn.harvest_config == (AMDGPU_VCN_HARVEST_VCN0 |
 						 AMDGPU_VCN_HARVEST_VCN1))
 			/* both instances are harvested, disable the block */
 			return -ENOENT;
-		}
 
 		if (adev->ip_versions[UVD_HWIP] == IP_VERSION(3, 0, 33))
 			adev->vcn.num_enc_rings = 0;