drm/amd/amdgpu: add query GFX cu info in CGS query system info

Needed for per CU powergating.
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NEric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -791,6 +791,7 @@ static int amdgpu_cgs_query_system_info(struct cgs_device *cgs_device,
 				struct cgs_system_info *sys_info)
 {
 	CGS_FUNC_ADEV;
+	struct amdgpu_cu_info cu_info;
 
 	if (NULL == sys_info)
 		return -ENODEV;
@@ -814,6 +815,10 @@ static int amdgpu_cgs_query_system_info(struct cgs_device *cgs_device,
 	case CGS_SYSTEM_INFO_PG_FLAGS:
 		sys_info->value = adev->pg_flags;
 		break;
+	case CGS_SYSTEM_INFO_GFX_CU_INFO:
+		amdgpu_asic_get_cu_info(adev, &cu_info);
+		sys_info->value = cu_info.number;
+		break;
 	default:
 		return -ENODEV;
 	}

drivers/gpu/drm/amd/include/cgs_common.h

@@ -114,6 +114,7 @@ enum cgs_system_info_id {
 	CGS_SYSTEM_INFO_PCIE_MLW,
 	CGS_SYSTEM_INFO_CG_FLAGS,
 	CGS_SYSTEM_INFO_PG_FLAGS,
+	CGS_SYSTEM_INFO_GFX_CU_INFO,
 	CGS_SYSTEM_INFO_ID_MAXIMUM,
 };