[PATCH 2/3] drm/amdgpu/smu: properly handle runpm/suspend/reset

[Alex Deucher]

We need some special handling when using baco vs. other
things.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 35 ++++++++++++----------
 1 file changed, 19 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index 0e9d33ee08ab..53ea5343fbed 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -1454,11 +1454,15 @@ int smu_reset(struct smu_context *smu)
 	return ret;
 }
 
-static int smu_disabled_dpms(struct smu_context *smu)
+static int smu_disable_dpm(struct smu_context *smu)
 {
 	struct amdgpu_device *adev = smu->adev;
 	uint32_t smu_version;
 	int ret = 0;
+	bool use_baco = !smu->is_apu &&
+		((adev->in_gpu_reset &&
+		  (amdgpu_asic_reset_method(adev) == AMD_RESET_METHOD_BACO)) ||
+		 (adev->in_runpm && amdgpu_asic_supports_baco(adev)));
 
 	ret = smu_get_smc_version(smu, NULL, &smu_version);
 	if (ret) {
@@ -1467,13 +1471,13 @@ static int smu_disabled_dpms(struct smu_context *smu)
 	}
 
 	/*
-	 * For baco reset on Arcturus, this operation
+	 * For baco on Arcturus, this operation
 	 * (disable all smu feature) will be handled by SMU FW.
 	 */
-	if (adev->in_gpu_reset &&
-	    (amdgpu_asic_reset_method(adev) == AMD_RESET_METHOD_BACO) &&
-	    (adev->asic_type == CHIP_ARCTURUS && smu_version > 0x360e00))
-		return 0;
+	if (adev->asic_type == CHIP_ARCTURUS) {
+		if (use_baco && (smu_version > 0x360e00))
+			return 0;
+	}
 
 	/* Disable all enabled SMU features */
 	ret = smu_system_features_control(smu, false);
@@ -1482,15 +1486,14 @@ static int smu_disabled_dpms(struct smu_context *smu)
 		return ret;
 	}
 
-	/* For baco reset, need to leave BACO feature enabled */
-	if (adev->in_gpu_reset &&
-	    (amdgpu_asic_reset_method(adev) == AMD_RESET_METHOD_BACO) &&
-	    !smu->is_apu &&
-	    smu_feature_is_enabled(smu, SMU_FEATURE_BACO_BIT)) {
-		ret = smu_feature_set_enabled(smu, SMU_FEATURE_BACO_BIT, true);
-		if (ret) {
-			pr_warn("set BACO feature enabled failed, return %d\n", ret);
-			return ret;
+	/* For baco, need to leave BACO feature enabled */
+	if (use_baco) {
+		if (smu_feature_is_enabled(smu, SMU_FEATURE_BACO_BIT)) {
+			ret = smu_feature_set_enabled(smu, SMU_FEATURE_BACO_BIT, true);
+			if (ret) {
+				pr_warn("set BACO feature enabled failed, return %d\n", ret);
+				return ret;
+			}
 		}
 	}
 
@@ -1510,7 +1513,7 @@ static int smu_suspend(void *handle)
 		return 0;
 
 	if(!amdgpu_sriov_vf(adev)) {
-		ret = smu_disabled_dpms(smu);
+		ret = smu_disable_dpm(smu);
 		if (ret)
 			return ret;
 	}
-- 
2.24.1