drm/amd/pm: power up or down vcn by instance

For smu ip with multiple vcn instances (smu 11/13/14), remove all the
for loop in dpm_set_vcn_enable() functions. And use the instance
argument to power up/down vcn for the given instance only, instead
of powering up/down for all vcn instances.

v2: remove all duplicated functions in v1.

remove for-loop from each ip, and temporarily move to dpm_set_vcn_enable,
in order to keep the exact same logic as before, until further separation
in the next patch.

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c

@@ -242,6 +242,7 @@ static int smu_dpm_set_vcn_enable(struct smu_context *smu,
 {
 	struct smu_power_context *smu_power = &smu->smu_power;
 	struct smu_power_gate *power_gate = &smu_power->power_gate;
+	struct amdgpu_device *adev = smu->adev;
 	int ret = 0;
 
 	/*
@@ -256,9 +257,11 @@ static int smu_dpm_set_vcn_enable(struct smu_context *smu,
 	if (atomic_read(&power_gate->vcn_gated) ^ enable)
 		return 0;
 
-	ret = smu->ppt_funcs->dpm_set_vcn_enable(smu, enable, 0xff);
-	if (!ret)
-		atomic_set(&power_gate->vcn_gated, !enable);
+	for (int i = 0; i < adev->vcn.num_vcn_inst; i++) {
+		ret = smu->ppt_funcs->dpm_set_vcn_enable(smu, enable, i);
+		if (ret)
+			return ret;
+	}
 
 	return ret;
 }

drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c

@@ -1157,19 +1157,15 @@ static int sienna_cichlid_dpm_set_vcn_enable(struct smu_context *smu,
 					      int inst)
 {
 	struct amdgpu_device *adev = smu->adev;
-	int i, ret = 0;
+	int ret = 0;
 
-	for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
-		if (adev->vcn.harvest_config & (1 << i))
-			continue;
-		/* vcn dpm on is a prerequisite for vcn power gate messages */
-		if (smu_cmn_feature_is_enabled(smu, SMU_FEATURE_MM_DPM_PG_BIT)) {
-			ret = smu_cmn_send_smc_msg_with_param(smu, enable ?
-							      SMU_MSG_PowerUpVcn : SMU_MSG_PowerDownVcn,
-							      0x10000 * i, NULL);
-			if (ret)
-				return ret;
-		}
+	if (adev->vcn.harvest_config & (1 << inst))
+		return ret;
+	/* vcn dpm on is a prerequisite for vcn power gate messages */
+	if (smu_cmn_feature_is_enabled(smu, SMU_FEATURE_MM_DPM_PG_BIT)) {
+		ret = smu_cmn_send_smc_msg_with_param(smu, enable ?
+						      SMU_MSG_PowerUpVcn : SMU_MSG_PowerDownVcn,
+						      0x10000 * inst, NULL);
 	}
 
 	return ret;

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c

@@ -2108,18 +2108,14 @@ int smu_v13_0_set_vcn_enable(struct smu_context *smu,
 			      int inst)
 {
 	struct amdgpu_device *adev = smu->adev;
-	int i, ret = 0;
+	int ret = 0;
 
-	for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
-		if (adev->vcn.harvest_config & (1 << i))
-			continue;
+	if (adev->vcn.harvest_config & (1 << inst))
+		return ret;
 
-		ret = smu_cmn_send_smc_msg_with_param(smu, enable ?
-						      SMU_MSG_PowerUpVcn : SMU_MSG_PowerDownVcn,
-						      i << 16U, NULL);
-		if (ret)
-			return ret;
-	}
+	ret = smu_cmn_send_smc_msg_with_param(smu, enable ?
+					      SMU_MSG_PowerUpVcn : SMU_MSG_PowerDownVcn,
+					      inst << 16U, NULL);
 
 	return ret;
 }

drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0.c

@@ -1511,29 +1511,24 @@ int smu_v14_0_set_vcn_enable(struct smu_context *smu,
 			      int inst)
 {
 	struct amdgpu_device *adev = smu->adev;
-	int i, ret = 0;
+	int ret = 0;
 
-	for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
-		if (adev->vcn.harvest_config & (1 << i))
-			continue;
+	if (adev->vcn.harvest_config & (1 << inst))
+		return ret;
 
-		if (smu->is_apu) {
-			if (i == 0)
-				ret = smu_cmn_send_smc_msg_with_param(smu, enable ?
-								      SMU_MSG_PowerUpVcn0 : SMU_MSG_PowerDownVcn0,
-								      i << 16U, NULL);
-			else if (i == 1)
-				ret = smu_cmn_send_smc_msg_with_param(smu, enable ?
-								      SMU_MSG_PowerUpVcn1 : SMU_MSG_PowerDownVcn1,
-								      i << 16U, NULL);
-		} else {
+	if (smu->is_apu) {
+		if (inst == 0)
 			ret = smu_cmn_send_smc_msg_with_param(smu, enable ?
-							      SMU_MSG_PowerUpVcn : SMU_MSG_PowerDownVcn,
-							      i << 16U, NULL);
-		}
-
-		if (ret)
-			return ret;
+							      SMU_MSG_PowerUpVcn0 : SMU_MSG_PowerDownVcn0,
+							      inst << 16U, NULL);
+		else if (inst == 1)
+			ret = smu_cmn_send_smc_msg_with_param(smu, enable ?
+							      SMU_MSG_PowerUpVcn1 : SMU_MSG_PowerDownVcn1,
+							      inst << 16U, NULL);
+	} else {
+		ret = smu_cmn_send_smc_msg_with_param(smu, enable ?
+						      SMU_MSG_PowerUpVcn : SMU_MSG_PowerDownVcn,
+						      inst << 16U, NULL);
 	}
 
 	return ret;