From 4a700546ec9b8fafedf569f363f905b9ec7f5ee8 Mon Sep 17 00:00:00 2001
From: Evan Quan <evan.quan@amd.com>
Date: Fri, 17 Dec 2021 19:05:06 +0800
Subject: drm/amdgpu: put SMU into proper state on runpm suspending for BOCO
capable platform
By setting mp1_state as PP_MP1_STATE_UNLOAD, MP1 will do some proper cleanups and
put itself into a state ready for PNP. That can workaround some random resuming
failure observed on BOCO capable platforms.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
(limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c')
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 7f94d218b74f..739e4d9303cd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -2251,12 +2251,27 @@ static int amdgpu_pmops_runtime_suspend(struct device *dev)
if (amdgpu_device_supports_px(drm_dev))
drm_dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
+ /*
+ * By setting mp1_state as PP_MP1_STATE_UNLOAD, MP1 will do some
+ * proper cleanups and put itself into a state ready for PNP. That
+ * can address some random resuming failure observed on BOCO capable
+ * platforms.
+ * TODO: this may be also needed for PX capable platform.
+ */
+ if (amdgpu_device_supports_boco(drm_dev))
+ adev->mp1_state = PP_MP1_STATE_UNLOAD;
+
ret = amdgpu_device_suspend(drm_dev, false);
if (ret) {
adev->in_runpm = false;
+ if (amdgpu_device_supports_boco(drm_dev))
+ adev->mp1_state = PP_MP1_STATE_NONE;
return ret;
}
+ if (amdgpu_device_supports_boco(drm_dev))
+ adev->mp1_state = PP_MP1_STATE_NONE;
+
if (amdgpu_device_supports_px(drm_dev)) {
/* Only need to handle PCI state in the driver for ATPX
* PCI core handles it for _PR3.
--
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