drm/amd/pm: Add dpm interface for temp metrics

Add dpm interface to get gpuboard/baseboard temperature metrics

v2: Add temperature metrics support check(Lijo)

v3: Return error code in case of operation not supported(Lijo)

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 60 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
index 71d986dd7a6e..8e19054578f7 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
@@ -2038,6 +2038,66 @@ int amdgpu_dpm_get_dpm_clock_table(struct amdgpu_device *adev,
 }
 
 /**
+ * amdgpu_dpm_get_temp_metrics - Retrieve metrics for a specific compute
+ * partition
+ * @adev: Pointer to the device.
+ * @type: Identifier for the temperature type metrics to be fetched.
+ * @table: Pointer to a buffer where the metrics will be stored. If NULL, the
+ * function returns the size of the metrics structure.
+ *
+ * This function retrieves metrics for a specific temperature type, If the
+ * table parameter is NULL, the function returns the size of the metrics
+ * structure without populating it.
+ *
+ * Return: Size of the metrics structure on success, or a negative error code on failure.
+ */
+ssize_t amdgpu_dpm_get_temp_metrics(struct amdgpu_device *adev,
+				    enum smu_temp_metric_type type, void *table)
+{
+	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret;
+
+	if (!pp_funcs->get_temp_metrics ||
+	    !amdgpu_dpm_is_temp_metrics_supported(adev, type))
+		return -EOPNOTSUPP;
+
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_temp_metrics(adev->powerplay.pp_handle, type, table);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
+}
+
+/**
+ * amdgpu_dpm_is_temp_metrics_supported - Return if specific temperature metrics support
+ * is available
+ * @adev: Pointer to the device.
+ * @type: Identifier for the temperature type metrics to be fetched.
+ *
+ * This function returns metrics if specific temperature metrics type is supported or not.
+ *
+ * Return: True in case of metrics type supported else false.
+ */
+bool amdgpu_dpm_is_temp_metrics_supported(struct amdgpu_device *adev,
+					  enum smu_temp_metric_type type)
+{
+	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	bool support_temp_metrics = false;
+
+	if (!pp_funcs->temp_metrics_is_supported)
+		return support_temp_metrics;
+
+	if (is_support_sw_smu(adev)) {
+		mutex_lock(&adev->pm.mutex);
+		support_temp_metrics =
+			pp_funcs->temp_metrics_is_supported(adev->powerplay.pp_handle, type);
+		mutex_unlock(&adev->pm.mutex);
+	}
+
+	return support_temp_metrics;
+}
+
+/**
  * amdgpu_dpm_get_xcp_metrics - Retrieve metrics for a specific compute
  * partition
  * @adev: Pointer to the device.