[PATCH] drm/amd/pm: fix the high voltage issue after unload

[Kenneth Feng]

fix the high voltage issue after unload on smu 13.0.10

Signed-off-by: Kenneth Feng <kenneth.feng at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c    | 26 ++++++++++--------
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c     | 27 +++++++++++++++++--
 drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h |  1 +
 .../drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c  |  8 +++++-
 4 files changed, 48 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 12dc71a6b5db..1b9136bb7f62 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4138,18 +4138,22 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 					adev->ip_blocks[i].status.hw = true;
 				}
 			}
+		} else if (amdgpu_ip_version(adev, MP1_HWIP, 0) == IP_VERSION(13, 0, 10) &&
+				   !amdgpu_device_has_display_hardware(adev)) {
+					r = psp_gpu_reset(adev);
 		} else {
-			tmp = amdgpu_reset_method;
-			/* It should do a default reset when loading or reloading the driver,
-			 * regardless of the module parameter reset_method.
-			 */
-			amdgpu_reset_method = AMD_RESET_METHOD_NONE;
-			r = amdgpu_asic_reset(adev);
-			amdgpu_reset_method = tmp;
-			if (r) {
-				dev_err(adev->dev, "asic reset on init failed\n");
-				goto failed;
-			}
+				tmp = amdgpu_reset_method;
+				/* It should do a default reset when loading or reloading the driver,
+				 * regardless of the module parameter reset_method.
+				 */
+				amdgpu_reset_method = AMD_RESET_METHOD_NONE;
+				r = amdgpu_asic_reset(adev);
+				amdgpu_reset_method = tmp;
+		}
+
+		if (r) {
+		  dev_err(adev->dev, "asic reset on init failed\n");
+		  goto failed;
 		}
 	}
 
diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index 246b211b1e85..65333141b1c1 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -735,7 +735,7 @@ static int smu_early_init(void *handle)
 	smu->adev = adev;
 	smu->pm_enabled = !!amdgpu_dpm;
 	smu->is_apu = false;
-	smu->smu_baco.state = SMU_BACO_STATE_EXIT;
+	smu->smu_baco.state = SMU_BACO_STATE_NONE;
 	smu->smu_baco.platform_support = false;
 	smu->user_dpm_profile.fan_mode = -1;
 
@@ -1966,10 +1966,25 @@ static int smu_smc_hw_cleanup(struct smu_context *smu)
 	return 0;
 }
 
+static int smu_reset_mp1_state(struct smu_context *smu)
+{
+	struct amdgpu_device *adev = smu->adev;
+	int ret = 0;
+
+	if ((!adev->in_runpm) && (!adev->in_suspend) &&
+		(!amdgpu_in_reset(adev)) && amdgpu_ip_version(adev, MP1_HWIP, 0) ==
+									IP_VERSION(13, 0, 10) &&
+		!amdgpu_device_has_display_hardware(adev))
+		ret = smu_set_mp1_state(smu, PP_MP1_STATE_UNLOAD);
+
+	return ret;
+}
+
 static int smu_hw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	struct smu_context *smu = adev->powerplay.pp_handle;
+	int ret;
 
 	if (amdgpu_sriov_vf(adev) && !amdgpu_sriov_is_pp_one_vf(adev))
 		return 0;
@@ -1987,7 +2002,15 @@ static int smu_hw_fini(void *handle)
 
 	adev->pm.dpm_enabled = false;
 
-	return smu_smc_hw_cleanup(smu);
+	ret = smu_smc_hw_cleanup(smu);
+	if (ret)
+		return ret;
+
+	ret = smu_reset_mp1_state(smu);
+	if (ret)
+		return ret;
+
+	return 0;
 }
 
 static void smu_late_fini(void *handle)
diff --git a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
index a870bdd49a4e..1fa81575788c 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
@@ -424,6 +424,7 @@ enum smu_reset_mode {
 enum smu_baco_state {
 	SMU_BACO_STATE_ENTER = 0,
 	SMU_BACO_STATE_EXIT,
+	SMU_BACO_STATE_NONE,
 };
 
 struct smu_baco_context {
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
index 5a857cb999f5..f4df4cceb06f 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
@@ -2752,7 +2752,13 @@ static int smu_v13_0_0_set_mp1_state(struct smu_context *smu,
 
 	switch (mp1_state) {
 	case PP_MP1_STATE_UNLOAD:
-		ret = smu_cmn_set_mp1_state(smu, mp1_state);
+		ret = smu_cmn_send_smc_msg_with_param(smu,
+											  SMU_MSG_PrepareMp1ForUnload,
+											  0x55, NULL);
+
+		if (!ret && smu->smu_baco.state == SMU_BACO_STATE_EXIT)
+			ret = smu_v13_0_disable_pmfw_state(smu);
+
 		break;
 	default:
 		/* Ignore others */
-- 
2.34.1