amdgpu/pm: Powerplay API for smu , changed 5 dpm powergating & sensor functions to use API

v2: add comment to highlight assignment that changes uint32_t value to int
    fix errors flagged by checkpatch.pl

New Functions
  smu_get_baco_capability() - Implement Powerplay API get_asic_baco_capability
  smu_baco_set_state()      - Implement Powerplay API set_asic_baco_state

Modified Functions
  smu_read_sensor() - modifed signature to match Powerplay API read_sensor

Other Changes
  added 3 above smu Powerplay functions to swsmu_dpm_funcs
  removed special smu handling in 5 dpm functions and called through Powerplay API
Signed-off-by: Darren Powell <darren.powell@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/amdgpu_dpm.c

@@ -1019,18 +1019,13 @@ int amdgpu_dpm_baco_enter(struct amdgpu_device *adev)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 	void *pp_handle = adev->powerplay.pp_handle;
-	struct smu_context *smu = &adev->smu;
 	int ret = 0;
 
-	if (is_support_sw_smu(adev)) {
-		ret = smu_baco_enter(smu);
-	} else {
-		if (!pp_funcs || !pp_funcs->set_asic_baco_state)
-			return -ENOENT;
+	if (!pp_funcs || !pp_funcs->set_asic_baco_state)
+		return -ENOENT;
 
-		/* enter BACO state */
-		ret = pp_funcs->set_asic_baco_state(pp_handle, 1);
-	}
+	/* enter BACO state */
+	ret = pp_funcs->set_asic_baco_state(pp_handle, 1);
 
 	return ret;
 }
@@ -1039,18 +1034,13 @@ int amdgpu_dpm_baco_exit(struct amdgpu_device *adev)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 	void *pp_handle = adev->powerplay.pp_handle;
-	struct smu_context *smu = &adev->smu;
 	int ret = 0;
 
-	if (is_support_sw_smu(adev)) {
-		ret = smu_baco_exit(smu);
-	} else {
-		if (!pp_funcs || !pp_funcs->set_asic_baco_state)
-			return -ENOENT;
+	if (!pp_funcs || !pp_funcs->set_asic_baco_state)
+		return -ENOENT;
 
-		/* exit BACO state */
-		ret = pp_funcs->set_asic_baco_state(pp_handle, 0);
-	}
+	/* exit BACO state */
+	ret = pp_funcs->set_asic_baco_state(pp_handle, 0);
 
 	return ret;
 }
@@ -1074,20 +1064,15 @@ bool amdgpu_dpm_is_baco_supported(struct amdgpu_device *adev)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 	void *pp_handle = adev->powerplay.pp_handle;
-	struct smu_context *smu = &adev->smu;
 	bool baco_cap;
 
-	if (is_support_sw_smu(adev)) {
-		return smu_baco_is_support(smu);
-	} else {
-		if (!pp_funcs || !pp_funcs->get_asic_baco_capability)
-			return false;
+	if (!pp_funcs || !pp_funcs->get_asic_baco_capability)
+		return false;
 
-		if (pp_funcs->get_asic_baco_capability(pp_handle, &baco_cap))
-			return false;
+	if (pp_funcs->get_asic_baco_capability(pp_handle, &baco_cap))
+		return false;
 
-		return baco_cap ? true : false;
-	}
+	return baco_cap;
 }
 
 int amdgpu_dpm_mode2_reset(struct amdgpu_device *adev)
@@ -1105,32 +1090,20 @@ int amdgpu_dpm_baco_reset(struct amdgpu_device *adev)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 	void *pp_handle = adev->powerplay.pp_handle;
-	struct smu_context *smu = &adev->smu;
 	int ret = 0;
 
-	if (is_support_sw_smu(adev)) {
-		ret = smu_baco_enter(smu);
-		if (ret)
-			return ret;
-
-		ret = smu_baco_exit(smu);
-		if (ret)
-			return ret;
-	} else {
-		if (!pp_funcs
-		    || !pp_funcs->set_asic_baco_state)
-			return -ENOENT;
+	if (!pp_funcs || !pp_funcs->set_asic_baco_state)
+		return -ENOENT;
 
-		/* enter BACO state */
-		ret = pp_funcs->set_asic_baco_state(pp_handle, 1);
-		if (ret)
-			return ret;
+	/* enter BACO state */
+	ret = pp_funcs->set_asic_baco_state(pp_handle, 1);
+	if (ret)
+		return ret;
 
-		/* exit BACO state */
-		ret = pp_funcs->set_asic_baco_state(pp_handle, 0);
-		if (ret)
-			return ret;
-	}
+	/* exit BACO state */
+	ret = pp_funcs->set_asic_baco_state(pp_handle, 0);
+	if (ret)
+		return ret;
 
 	return 0;
 }
@@ -1272,20 +1245,17 @@ void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev)
 int amdgpu_dpm_read_sensor(struct amdgpu_device *adev, enum amd_pp_sensors sensor,
 			   void *data, uint32_t *size)
 {
+	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 	int ret = 0;
 
 	if (!data || !size)
 		return -EINVAL;
 
-	if (is_support_sw_smu(adev))
-		ret = smu_read_sensor(&adev->smu, sensor, data, size);
-	else {
-		if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->read_sensor)
-			ret = adev->powerplay.pp_funcs->read_sensor((adev)->powerplay.pp_handle,
+	if (pp_funcs && pp_funcs->read_sensor)
+		ret = pp_funcs->read_sensor((adev)->powerplay.pp_handle,
 								    sensor, data, size);
-		else
-			ret = -EINVAL;
-	}
+	else
+		ret = -EINVAL;
 
 	return ret;
 }

drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h

@@ -1243,9 +1243,7 @@ int smu_od_edit_dpm_table(struct smu_context *smu,
 			  enum PP_OD_DPM_TABLE_COMMAND type,
 			  long *input, uint32_t size);
 
-int smu_read_sensor(struct smu_context *smu,
-		    enum amd_pp_sensors sensor,
-		    void *data, uint32_t *size);
+int smu_read_sensor(void *handle, int sensor, void *data, int *size);
 int smu_get_power_profile_mode(struct smu_context *smu, char *buf);
 
 int smu_set_power_profile_mode(struct smu_context *smu,
@@ -1275,11 +1273,14 @@ int smu_set_xgmi_pstate(void *handle,
 int smu_set_azalia_d3_pme(struct smu_context *smu);
 
 bool smu_baco_is_support(struct smu_context *smu);
+int smu_get_baco_capability(void *handle, bool *cap);
 
 int smu_baco_get_state(struct smu_context *smu, enum smu_baco_state *state);
 
 int smu_baco_enter(struct smu_context *smu);
 int smu_baco_exit(struct smu_context *smu);
+int smu_baco_set_state(void *handle, int state);
+
 
 bool smu_mode1_reset_is_support(struct smu_context *smu);
 int smu_mode1_reset(struct smu_context *smu);

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

@@ -2169,20 +2169,23 @@ int smu_od_edit_dpm_table(struct smu_context *smu,
 	return ret;
 }
 
-int smu_read_sensor(struct smu_context *smu,
-		    enum amd_pp_sensors sensor,
-		    void *data, uint32_t *size)
+int smu_read_sensor(void *handle, int sensor, void *data, int *size_arg)
 {
+	struct smu_context *smu = handle;
 	struct smu_umd_pstate_table *pstate_table =
 				&smu->pstate_table;
 	int ret = 0;
+	uint32_t *size, size_val;
 
 	if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
 		return -EOPNOTSUPP;
 
-	if (!data || !size)
+	if (!data || !size_arg)
 		return -EINVAL;
 
+	size_val = *size_arg;
+	size = &size_val;
+
 	mutex_lock(&smu->mutex);
 
 	if (smu->ppt_funcs->read_sensor)
@@ -2227,6 +2230,9 @@ int smu_read_sensor(struct smu_context *smu,
 unlock:
 	mutex_unlock(&smu->mutex);
 
+	// assign uint32_t to int
+	*size_arg = size_val;
+
 	return ret;
 }
 
@@ -2523,6 +2529,27 @@ bool smu_baco_is_support(struct smu_context *smu)
 	return ret;
 }
 
+int smu_get_baco_capability(void *handle, bool *cap)
+{
+	struct smu_context *smu = handle;
+	int ret = 0;
+
+	*cap = false;
+
+	if (!smu->pm_enabled)
+		return 0;
+
+	mutex_lock(&smu->mutex);
+
+	if (smu->ppt_funcs && smu->ppt_funcs->baco_is_support)
+		*cap = smu->ppt_funcs->baco_is_support(smu);
+
+	mutex_unlock(&smu->mutex);
+
+	return ret;
+}
+
+
 int smu_baco_get_state(struct smu_context *smu, enum smu_baco_state *state)
 {
 	if (smu->ppt_funcs->baco_get_state)
@@ -2575,6 +2602,40 @@ int smu_baco_exit(struct smu_context *smu)
 	return ret;
 }
 
+int smu_baco_set_state(void *handle, int state)
+{
+	struct smu_context *smu = handle;
+	int ret = 0;
+
+	if (!smu->pm_enabled)
+		return -EOPNOTSUPP;
+
+	if (state == 0) {
+		mutex_lock(&smu->mutex);
+
+		if (smu->ppt_funcs->baco_exit)
+			ret = smu->ppt_funcs->baco_exit(smu);
+
+		mutex_unlock(&smu->mutex);
+	} else if (state == 1) {
+		mutex_lock(&smu->mutex);
+
+		if (smu->ppt_funcs->baco_enter)
+			ret = smu->ppt_funcs->baco_enter(smu);
+
+		mutex_unlock(&smu->mutex);
+
+	} else {
+		return -EINVAL;
+	}
+
+	if (ret)
+		dev_err(smu->adev->dev, "Failed to %s BACO state!\n",
+				(state)?"enter":"exit");
+
+	return ret;
+}
+
 bool smu_mode1_reset_is_support(struct smu_context *smu)
 {
 	bool ret = false;
@@ -2759,6 +2820,7 @@ static const struct amd_pm_funcs swsmu_pm_funcs = {
 	.get_fan_control_mode    = smu_get_fan_control_mode,
 	.set_fan_speed_percent   = smu_set_fan_speed_percent,
 	.get_fan_speed_percent   = smu_get_fan_speed_percent,
+	.read_sensor             = smu_read_sensor,
 	.get_performance_level   = smu_get_performance_level,
 	.get_current_power_state = smu_get_current_power_state,
 	.get_fan_speed_rpm       = smu_get_fan_speed_rpm,
@@ -2771,6 +2833,8 @@ static const struct amd_pm_funcs swsmu_pm_funcs = {
 	.set_mp1_state           = smu_set_mp1_state,
 	/* export to DC */
 	.enable_mgpu_fan_boost   = smu_enable_mgpu_fan_boost,
+	.get_asic_baco_capability = smu_get_baco_capability,
+	.set_asic_baco_state     = smu_baco_set_state,
 	.get_ppfeature_status    = smu_sys_get_pp_feature_mask,
 	.set_ppfeature_status    = smu_sys_set_pp_feature_mask,
 	.asic_reset_mode_2       = smu_mode2_reset,