[PATCH 3/5] drm/amdgpu/cgs: add sys info query for pcie gen and link width

[Alex Deucher]

Needed by powerplay to properly handle pcie dpm switching.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c  | 6 ++++++
 drivers/gpu/drm/amd/include/cgs_common.h | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
index a611401a..6fa0fea 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
@@ -754,6 +754,12 @@ static int amdgpu_cgs_query_system_info(void *cgs_device,
 	case CGS_SYSTEM_INFO_ADAPTER_BDF_ID:
 		sys_info->value = adev->pdev->devfn | (adev->pdev->bus->number << 8);
 		break;
+	case CGS_SYSTEM_INFO_PCIE_GEN_INFO:
+		sys_info->value = adev->pm.pcie_gen_mask;
+		break;
+	case CGS_SYSTEM_INFO_PCIE_MLW:
+		sys_info->value = adev->pm.pcie_mlw_mask;
+		break;
 	default:
 		return -ENODEV;
 	}
diff --git a/drivers/gpu/drm/amd/include/cgs_common.h b/drivers/gpu/drm/amd/include/cgs_common.h
index 2bbffd1..03affb3 100644
--- a/drivers/gpu/drm/amd/include/cgs_common.h
+++ b/drivers/gpu/drm/amd/include/cgs_common.h
@@ -107,6 +107,8 @@ enum cgs_ucode_id {
 
 enum cgs_system_info_id {
 	CGS_SYSTEM_INFO_ADAPTER_BDF_ID = 1,
+	CGS_SYSTEM_INFO_PCIE_GEN_INFO,
+	CGS_SYSTEM_INFO_PCIE_MLW,
 	CGS_SYSTEM_INFO_ID_MAXIMUM,
 };
 
-- 
1.8.3.1