From fafa3c37f727e89e890a11b80a70453e7de42d96 Mon Sep 17 00:00:00 2001
From: John Clements <john.clements@amd.com>
Date: Wed, 13 May 2020 17:45:57 +0800
Subject: drm/amdgpu: Add DPM function for XGMI link power down control
Git-commit: 5e7067b24fcf1549c72988dd92de6d17ff3d2077
Patch-mainline: v5.8-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c | 10 ++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c
index 0e8018c9aa8e..d2a105e3bf7c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c
@@ -1188,3 +1188,13 @@ int amdgpu_dpm_set_df_cstate(struct amdgpu_device *adev,
 
 	return ret;
 }
+
+int amdgpu_dpm_allow_xgmi_power_down(struct amdgpu_device *adev, bool en)
+{
+	struct smu_context *smu = &adev->smu;
+
+	if (is_support_sw_smu(adev))
+		return smu_allow_xgmi_power_down(smu, en);
+
+	return 0;
+}
\ No newline at end of file
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
index 936d85aa0fbc..956f6c710670 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
@@ -538,4 +538,6 @@ int amdgpu_dpm_baco_enter(struct amdgpu_device *adev);
 int amdgpu_dpm_set_df_cstate(struct amdgpu_device *adev,
 			     uint32_t cstate);
 
+int amdgpu_dpm_allow_xgmi_power_down(struct amdgpu_device *adev, bool en);
+
 #endif
-- 
2.28.0